• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Spring device (30) for a draw-in roller of a draw-in device of an agricultural harvesting machine, with a first connecting unit (35) for connecting to one of a rotation axis of the drawing-in roller and a stationary element of the drawing-in device, a second connecting unit (45) for connecting to the other of the rotation axis and the stationary member, a first compression spring (56) having a first longitudinal end (57) which is supported on the first connection unit, and a second compression spring (60) having a first longitudinal end (61) which is at the second Connection unit is supported. According to the invention, the two compression springs are arranged one after the other and a third connection unit (65) is provided between adjacent respective second longitudinal ends (58, 62) of the two compression springs, so that the third connection unit transmits force to the second longitudinal ends of the two compression springs with their respective support connects.
    公开号:BE1023350B1
    申请号:E2015/5812
    申请日:2015-12-10
    公开日:2017-02-10
    发明作者:Manfred Klotz
    申请人:Claas Saulgau Gmbh；
    IPC主号:
    专利说明:

    spring means
    The invention relates to a trained according to the preamble of claim 1 spring means for a feed roller of a collection device of an agricultural harvester.
    A spring device of the type mentioned above is known for example from EP 1 342 403 B1. This spring means is e.g. Installed in a collection device of a self-propelled forage harvester. The feeder is equipped with two fixed in the feeder housing lower feed rollers and two cooperating with these upper feed rollers. The upper feed rollers are mounted in a height-adjustable manner in the feeder housing in order to be able to move upwards when collecting crop material. The spring device has the task of applying a crop in front of the upper feed rollers with a defined roller force, so that this front upper feed roller in cooperation with the corresponding front lower feed roller feeds the crop and precompressed. The subsequent pair of upper and lower feed rollers then realizes the final compaction of the crop to a Erntegutmatte, which is zer-shredded in a subsequent Häckselaggregat.
    In the case of the spring device known from EP 1 342 403 B1, a compression spring exerts a small spring force already in a lowermost position of the feed roller (with a minimum press gap) from the two compression springs provided for the front upper feed roller. The other compression spring remains ineffective on the first piece of their Aushubweges from the lowest position out and later proposes with an upper end of this on a housing of the feeder, which then add the spring forces of the two springs abruptly to a large spring force.
    The invention has the object of providing a spring device of the type mentioned in such a way that a gentle varying spring rate for the entire system can be realized.
    This is achieved with a spring device according to claim 1. Further developments of the invention are defined in the dependent claims.
    According to the invention, a spring device for a feed roller of a collection device of an agricultural harvester on a first connection unit, a second connection unit, a first compression spring and a second compression spring. The first connection unit is configured to connect to one of a rotation axis of the feed roller and a stationary element of the feed device. The second connection unit is configured to connect to the other of the rotation axis and the stationary element. The first compression spring has a first longitudinal end which is supported on the first connection unit. The second compression spring has a first longitudinal end which is supported on the second connection unit.
    The spring device according to the invention is characterized in that the two compression springs are arranged longitudinally successive and a third connection unit between adjacent respective second longitudinal ends of the two compression springs is provided, so that the third connection unit connects the second longitudinal ends of the two compression springs under respective support of these force-transmitting.
    As a result, the first compression spring and the second compression spring are received between the first connection unit and the second connection unit such that they are both effective with respect to their respective spring forces from the beginning. Thus eliminates during the springing of the spring device, an abrupt increase in the spring force, which can be a gentler variability of the spring rate of the entire system can be realized.
    Preferably, the first compression spring and the second compression spring define different spring force characteristics, i. have different spring rates. More preferably, the first compression spring has a smaller spring rate than the second compression spring. Thus, the spring rate of the entire system of the spring device can be even better, in particular progressively increasing, vary.
    Preferably, the first connection unit has an extension, which extends for a predetermined length along the first compression spring towards its second longitudinal end. In this case, the third connection unit has a support flange, on which the second longitudinal end of the first compression spring is supported, and a first extension, which is coaxial with the extension of the first connection unit from the support flange by a predetermined length along the first compression spring in the direction to the extending first longitudinal end. The sum of the lengths of the extensions of the first and the third connection unit is smaller than an extended length of the first compression spring. As a result, there is a gap between the mutually facing longitudinal ends of these extensions, which advantageously defines a maximum deflection travel for the first compression spring.
    Preferably, the first compression spring is designed as a helical compression spring, in the interior of the extensions of the first and the third connection unit are fitted so that they each provide a longitudinal guide for the first compression spring, whereby a lateral buckling of the first compression spring is counteracted.
    Preferably, the extension of the third connection unit is sleeve-shaped. In addition, a guide rod is provided with an outer diameter which is smaller than respective outer diameter of the extensions of the first and the third connection unit. The guide rod is connected to the extension of the first connection unit and extends along the first compression spring in the interior thereof through the sleeve-shaped extension of the third connection unit. A provided at a free longitudinal end of the guide rod rod end enlarged outer diameter is disposed on a side facing away from the first compression spring side of the support flange of the third connection unit to support itself with extended first compression spring on the support flange. Thus, the rod end forms a stop for the feed roller to define a minimum press nip.
    Preferably, a third compression spring is arranged between the rod end of the guide rod and the support flange of the third connection unit, via which the rod head is supported on the support flange when the first compression spring is stretched. Preferably, the third compression spring is designed as a rubber buffer.
    Preferably, the second compression spring is designed as a helical compression spring. In this case, the third connection unit has a sleeve-shaped second extension, which extends radially outward of the first extension of the third connection unit from the support flange by a predetermined length along the second compression spring towards its first longitudinal end. The second extension of the third connection unit extends through the interior of the second compression spring and coaxial with the first extension of the third connection unit, so that the second extension provides a lateral buckling preventing longitudinal guide for the second compression spring. The length of the second extension of the third connection unit is smaller than an extended length of the second compression spring to define a maximum compression travel for the second compression spring.
    Preferably, the second connection unit has a connection portion for connecting to the other of the rotation axis of the feed roller and the stationary member of the feeder, and a portal-shaped support portion for supporting the first longitudinal end of the second compression spring. The portal-shaped support portion has two legs which extend diametrically opposite longitudinally along the second compression spring and which are connected at a respective first longitudinal end of this with the connecting portion, and a support web which connects respective second longitudinal ends of the two legs and at which the first longitudinal end the second compression spring is supported. Preferably, the connecting portion of the second connection unit is arranged in an extended state of the second compression spring adjacent to the second longitudinal end thereof.
    With this configuration, it is advantageously possible to define an arrangement position of the second compression spring outside the limitations of the housing, so that an available space for the second compression spring and thus their design variability are increased.
    According to an alternative, the two legs may be functionally replaced by a tube which surrounds the second compression spring, and the support web may be functionally replaced by a cover which closes the tube at a longitudinal end thereof.
    Preferably, the connecting portion of the second connection unit provides an outer diameter-side longitudinal guide for the second compression spring, whereby their bending tendency is further reduced.
    The invention also provides a collection device with a spring device according to the invention according to one, several or all the above-described preferred embodiments of the invention in any conceivable combination and an agricultural harvesting machine, in particular a self-propelled forage harvester, with such a collection device. The collection device comprises in addition to the spring device at least one feed roller and a stationary element such as in particular a housing. The first connection unit of the spring device is connected to one of an axis of rotation of the feed roller and the stationary element of the retraction device, whereas the second connection unit of the spring device with the other of the axis of rotation of the feed roller and the stationary element of the retraction device.
    The invention expressly also extends to such embodiments which are not characterized by feature combinations of explicit back references of the invention.
    Proverbs are given, with which the disclosed features of the invention - as far as is technically feasible - can be combined with each other.
    In the following the invention will be described in more detail by means of a preferred embodiment and with reference to the attached figures.
    1 shows a schematic sectional side view of a collection device of an agricultural harvesting machine according to an embodiment of the invention.
    FIG. 2 shows a perspective view of a spring device for a feed roller of the intake device of FIG. 1.
    3 shows a longitudinal sectional view of the spring device of FIG. 2.
    Hereinafter, referring to FIGS. 1 to 3, an agricultural harvesting machine 1 according to an embodiment of the invention will be described. The harvester 1 according to this embodiment of the invention is a self-propelled forage harvester for harvesting e.g. Corn and similar plants are designed as a crop EC.
    As shown in FIG. 1, the harvester 1 has a collection device 10, which is set up to collect the crop EG, which is conveyed by means of e.g. a maize header (not shown) coupled to the harvester 1 has been harvested from a field of cropping (not shown), and for compacting the harvested crop EG into a crop mat EG '. The harvesting machine 1 also has a chopping unit 100 with a chopper drum 101 provided peripherally with cutting blades and a counter-blade 102. The chopping unit 100 is arranged downstream of the intake device 10 in the conveying direction R1 and arranged to chop up the compacted crop mat EG '.
    As shown in FIG. 1, the drawing-in device 10 has a pair of rollers 11 having a front upper feed roller 12 and a front lower feed roller 13 and a rear roller pair 14 with a rear upper feed roller 15 and a rear lower roller 12 relative to the conveying direction R1 Feed roller 16 on. The front pair of rollers 11 is used in addition to the collection of the crop EC for pre-compression of the crop EG. The rear roller pair 14 is used in addition to the collection of the crop EG for final compaction of the crop EG to the Erntegutmatte EG '.
    The lower feed rollers 13,16 of the front and rear roller pair 11,14 are (not designated) about respective axes of rotation A1, A2 of their support shafts rotatably and positionally mounted in or on a housing 10a of the retraction device 10. The upper feed rollers 12,15 of the front and rear roller pair 11,14 are rotatably and positionally mounted about respective axes of rotation A3, A4 of their support shafts (not labeled) in or on the housing 10a of the retraction device 10.
    More specifically, the upper feed roller 15 of the rear roller pair 14 with the opposite longitudinal end sections its support shaft in front longitudinal ends of two rockers 17, 17 (in Fig. 1, only one of the wings 17, 17 visible) rotatably mounted, wherein the two wings 17,17 turn are mounted with their rear longitudinal ends about a pivot axis A5 pivotally mounted on the housing 10a.
    In the region of the front longitudinal ends of the rockers 17, 17 and the axis of rotation A4 of the upper feed roller 15 of the rear roller pair 14, the housing 10a for each longitudinal end portion of the support shaft of this feed roller 15, a slot 10c, which is a free space for adjusting a between the upper feed roller 15 and the lower feed roller 16 of the rear roller pair 14 defined press nip or distance provides.
    On both sides of the support shaft of the upper feed roller 15 of the rear roller pair 14 is ever a coupling 18 (in Fig. 1 is only one of the coupling 18,18 visible) pivotally mounted with their rear longitudinal ends. The opposite longitudinal end portions of the support shaft of the upper feed roller 12 of the front roller pair 11 are rotatably supported at the front longitudinal ends of the two coupling 18, 18.
    In the region of the front longitudinal ends of the coupling 18,18 and the rotational axis A3 of the upper feed roller 12 of the front pair of rollers 11, the housing 10a for each longitudinal end portion of the support shaft of this feed roller 12 has a slot 10d, which is a free space for adjusting a between the upper feed roller 12 and the lower feed roller 13 of the front roller pair 11 defined press nip or distance provides.
    In order to adjust the press nip defined between the upper feed roller 15 and the lower feed roller 16 of the rear roller pair 14, the retraction device 10 has two hydraulic cylinders 20, 20 (in Fig. 1, only one of the two hydraulic cylinders 20, 20 visible) whose Piston rod (not labeled) in each case acts on one of the longitudinal end portions of the support shaft of the upper feed roller 15 of the rear roller pair 14 and the cylinder housing (not labeled) is mounted in each case pivotally mounted on the housing 10a.
    In order to allow a resilient expansion of the press nip between the upper feed roller 12 and the lower feed roller 13 of the front roller pair 11, the retraction device 10, two spring means 30, 30 (in Fig. 1, only one of the two spring means 30, 30 visible), which are each connected on the one hand with one of the longitudinal end portions of the support shaft and the rotation axis A3 of the upper feed roller 12 of the front roller pair 11 and on the other hand in each case pivotally connected to the housing 10a.
    More specifically, each spring device 30 has a first connection unit 35 pivotally connected to one of the longitudinal end portions of the support shaft and the rotation axis A3 of the upper feed roller 12 of the front roller pair 11, and a second connection unit 45 pivotally connected to the housing 10a of the retraction device 10 connected as a stationary element.
    Referring additionally to Figures 2 and 3, each spring means 30 also includes a first compression spring 56 which is formed as a helical compression spring and which has a first longitudinal end 57 which is supported on the first connection unit 35 and a second compression spring 60 which acts as a helical compression spring is formed and which has a first longitudinal end 61 which is supported on the second connection unit 45.
    As can be seen in particular from FIGS. 2 and 3, the two compression springs 56, 60 are arranged in succession in a line and the spring device 30 also has a third connection unit 65 which is disposed between adjacent respective second longitudinal ends 58 and 62 of the two compression springs 56, 60 is arranged. The third connection unit 65 is provided so that it connects the second longitudinal ends 58, 62 of the two compression springs 56, 60 under respective support of these force-transmitting.
    The first compression spring 56 and the second compression spring 60 are received between the first connection unit 35 and the second connection unit 45 so that they are under slight bias. More specifically, the first compression spring 56 and the second compression spring 60 are configured to define different spring force characteristics. More specifically, the first compression spring 56 has a smaller spring rate than the second compression spring 60, so that the slight bias with which both compression springs 56, 60 are received between the first and second connection units 35, 45, by slight compression the first compression spring 56 is generated.
    Preferably, the spring rate of the second compression spring 60 is so much greater than the spring rate of the first compression spring 56, that the second compression spring 60 substantially at maximum compression of the first compression spring 56 here begins a compression or compression, as will be described in more detail later ,
    As can be seen in FIGS. 2 and 3, the first connecting unit 35 has a sleeve-shaped extension 36 which extends longitudinally along the first compression spring 56 in the direction of its second longitudinal end 58 by a predetermined length. The third connection unit 65 in turn has a support flange 66 on which the second longitudinal end 58 of the first compression spring 56 is supported, and a sleeve-shaped first extension 67 which is coaxial with the extension 36 of the first connection unit 35 from the support flange 66 by a predetermined length extends longitudinally along the first compression spring 56 in the direction of the first longitudinal end 57 towards.
    The extension 36 of the first connection unit 35 and the first extension 67 of the third connection unit 65 are fitted in the interior of the first compression spring 56, so that they each provide a longitudinal guide for the first compression spring 56. A sum of the lengths of the extension 36 of the first connection unit 35 and the first extension 67 of the third connection unit 65 is smaller than an extended length and greater than a block length of the first compression spring 56. Thus, between the facing longitudinal ends of these extensions 36, 67 a Gap exists which defines a maximum compression travel for the first compression spring 56. Under the block length, the length of the spring should be understood, which remains when the compression spring is compressed or compressed so far that all turns abut each other.
    The first connection unit 35 further has a guide rod 37 with an outer diameter which is smaller than the respective outer diameter of the extension 36 of the first connection unit 35 and the first extension 67 of the third connection unit 65. The guide rod 37 is connected at one longitudinal end thereof to the extension 36 of the first connection unit 35 by being screwed into the interior thereof by means of respective threads (not shown).
    The guide rod 37 extends along the first compression spring 56 in the interior thereof through the sleeve-shaped first extension 67 of the third connection unit 65, so that a rod end 38 of enlarged outer diameter provided on a free longitudinal end of the guide rod 37 is on a side of the support flange facing away from the first compression spring 56 66 of the third connection unit 65 is arranged to be supported on the support flange 66 when the first compression spring 56 is stretched.
    More precisely, a third compression spring 39 is arranged between the rod end 38 of the guide rod 37 and the support flange 66 of the third connection unit 65, which is designed as a rubber buffer and over which the rod head 38 is supported on the support flange 66 when the first compression spring 56 is extended to a lower stop for the upper feed roller 12 of the front roller pair 11 and a minimum press nip of the front roller pair 11 to define.
    The third connection unit 65 also includes a sleeve-shaped second extension 68 which extends radially outward of the first extension 67, i. larger diameter than this, extends from the support flange 66 of the third connection unit 65 by a predetermined length along the second compression spring 60 toward the first longitudinal end 61. More specifically, the second extension 68 of the third connection unit 65 extends through the interior of the second compression spring 60 and coaxially with the first extension 67 of the third connection unit 65, so that the second extension 68 provides a longitudinal guide for the second compression spring 60. 3, the support flange 66 forms a bottom for the sleeve-shaped second extension 68 of the third connection unit 65. As also seen in FIG. 3, the second extension 68 of the third connection unit 65 adjacent to the support flange 66 is also radially protruding annular collar 69 formed on which the second longitudinal end 62 of the second compression spring 60 is supported.
    The second connection unit 45 has a connection section 46, which is pivotably connected via a screw connection 47 to the housing (stationary element) 10a of the collection device 10. As is apparent from FIGS. 1 to 3, the connecting portion 46 of the second connecting unit 45 is disposed in a stretched state of the second compression spring 60 adjacent to the second longitudinal end 62 thereof. In this case, the connecting portion 46 of the second connecting unit 45 provides an outer diameter-side longitudinal guide for the second compression spring 60, as shown in FIG.
    The second connection unit 45 further includes a portal-shaped support portion 48 for supporting the first longitudinal end 61 of the second compression spring 60. The portal-shaped support portion 48 comprises two identical legs 49, 49 which extend diametrically opposite longitudinally along the second compression spring 60 and which are connected at a respective first longitudinal end thereof to the connecting portion 46 via a screw connection (not designated). The portal-shaped support portion 48 further includes a support bar 50 which connects respective second longitudinal ends of the two legs 49, 49 and on which the first longitudinal end 61 of the second compression spring 60 is supported and centered.
    Although not shown in the figures, according to an alternative, the two legs 49, 49 may be functionally replaced by a tube surrounding the second compression spring 60, and the support bar 50 may be functionally replaced by a cover which engages the tube at a longitudinal end thereof closes.
    Since the length of the second extension 68 of the third connection unit 65 is smaller than an extended length of the second compression spring 60, in the stretched state of the second compression spring 60 between the support web 50 of the portal-shaped support portion 48 of the second connection unit 45 and a free longitudinal end of the second extension 68 of third connection unit 65, there is a clearance defining a maximum compression travel for the second compression spring 60.
    Upon compression of the spring means 30 and thus resilient expansion of the press nip between the upper feed roller 12 and the lower feed roller 13 of the front roller pair 11, the first compression spring 56 is first compressed or compressed until the facing longitudinal ends of the extension 36 of the first connection unit 35 and the first extension 67 of the third connection unit 65 abut each other and thus prevent further compression of the first compression spring 56. When compressing the first compression spring 56, the second compression spring 60 is constantly under pressure, but due to its spring rate, which is greater than that of the first compression spring 56, does not yet spring at this stage.
    With a further need for resilient expansion of the press nip (by a large amount of crop EG) is then compressed or compressed substantially with the completion of Einfe-derns the first compression spring 56, the second compression spring 60 until the free longitudinal end of the second extension 68 of the third connection unit 65 abuts on the support web 50 of the portal-shaped support portion 48 of the second connection unit 45 and thus further compression of the second compression spring 60 is prevented. In this case, the power transmission takes place by the successive sitting of the extension 36 of the first connection unit 35 and the first extension 67 of the third connection unit 65 directly from the first connection unit to the third connection unit 65 and thus to the second compression spring 60. However, remains at this stage of compression in which the feed roller 12 is raised slightly, the spring force of the first compression spring 56 generated until then effective, wherein the pre-pressing force is generated alone by the second compression spring 60.
    According to one alternative, the respective spring rates of the first compression spring 56 and the second compression spring 60 may be selected so that the second compression spring 60 already springs in during compression of the first compression spring 56.
    The conclusion is realized by the two compression springs 56, 60, a variable spring rate for the entire system, which targeted pressure increase can be controlled by targeted definition of the end stop of the first stage. The spring device 30 can be adjusted outside the harvester and pre-assembled. Since, as shown in FIG. 1, the stronger second compression spring 60 is arranged substantially above the housing 10a, its available space and thus its design variability are increased. The overhead arrangement of the stronger second compression spring 60 achieves a "V-shaped" spring arrangement which is more stable against lateral buckling and which produces less friction losses in the spring guide The third compression spring 39 arranged within the sleeve-shaped second extension 68 of the third connection unit 65 serves as an end stop of the front upper feed roller 12 down (definition of the minimum press nip), which can eliminate lateral buffers.This integration of the end stop in the spring package is excellent protection against contamination.
    A spring device according to the invention is, of course, also applicable to other drawing-in devices which are connected to e.g. 6 feed rollers are executed. Likewise, a spring device according to the invention can also be used on intake devices, in which the feed rollers are connected to a deviating from the above-described embodiment lever kinematics on the intake housing.
    I Harvesting machine 10 Feeding device 10a Housing (stationary element) 10c slot 10d slot II front pair of rollers 12 feed roller 13 feed roller 14 rear roller pair 15 feed roller 16 feed roller 17 rocker 18 coupling 20 hydraulic cylinder 30 spring device 35 first connection unit 36 extension 37 guide rod 38 rod end 39 third compression spring 45th second connection unit 46 connecting section 47 screw connection 48 supporting section 49 leg 50 support bar 56 first compression spring 57 first longitudinal end 58 second longitudinal end 60 second compression spring 61 first longitudinal end 62 second longitudinal end 65 third connection unit 66 support flange 67 first extension 68 second extension 69 annular collar 100 chopping unit 101 chopper drum 102 counter cutting edge A1 Rotation axis A2 Rotation axis A3 Rotation axis A4 Rotation axis A5 Pivoting axis EC Crop EG 'Crop R1 Transport direction
    权利要求:
    Claims (10)
    [1]
    claims
    A spring means (30) for a feed roller (12) of a retraction device (10) of an agricultural harvesting machine (1), comprising: a first connection unit (35) for connecting to one of a rotation axis (A3) of the feed roller (12) and a stationary one Element (10a) of the intake device (10), a second connection unit (45) for connection to the other of the axis of rotation (A3) of the feed roller (12) and the stationary element (10a) of the collection device (10), a first compression spring (56 ) having a first longitudinal end (57) supported on said first connection unit (35) and a second compression spring (60) having a first longitudinal end (61) supported on said second connection unit (45), characterized in that the two compression springs (56, 60) are arranged longitudinally in succession and a third connection unit (65) is provided between adjacent respective second longitudinal ends (58, 62) of the two compression springs (56, 60) is seen, so that the third connection unit (65) connects the second longitudinal ends (58, 62) of the two compression springs (56, 60) under respective support of these force-transmitting.
    [2]
    2. Spring device (30) according to claim 1, wherein the first compression spring (56) and the second compression spring (60) define different spring force characteristics.
    [3]
    A spring means (30) according to claim 1 or 2, wherein the first connection unit (35) has an extension (36) extending longitudinally along the first compression spring (56) a predetermined length towards the second longitudinal end (58) thereof wherein the third connection unit (65) has a support flange (66) on which the second longitudinal end (58) of the first compression spring (56) is supported, and a first extension (67) which is coaxial with the extension (36). the first connection unit (35) extends longitudinally along the first compression spring (56) from the support flange (66) for a predetermined length towards the first longitudinal end (57) thereof, and the sum of the lengths of the extensions (36, 67) of first and third connection units (35, 65) is smaller than an extended length of the first compression spring (56).
    [4]
    4. spring device (30) according to claim 3, wherein the first compression spring (56) is designed as a helical compression spring in the interior of the extensions (36, 67) of the first and the third connection unit (35, 65) are fitted, so that they each provide a longitudinal guide for the first compression spring (56).
    [5]
    5. spring device (30) according to claim 4, wherein the extension (67) of the third connection unit (65) is sleeve-shaped, further comprising a guide rod (37) is provided with an outer diameter which is smaller than respective outer diameter of the extensions (36, 67 ) of the first and the third connection unit (35, 65), wherein the guide rod (37) is connected to the extension (36) of the first connection unit (35) and along the first compression spring (56) in the interior through the sleeve-shaped extension (67) of the third connection unit (65), and wherein a rod end (38) of enlarged outer diameter provided on a free longitudinal end of the guide rod (37) faces away from the first compression spring (56) on the support flange (66) of the third connection unit (FIG. 65) is arranged to be supported on the support flange (66) when the first compression spring (56) is stretched.
    [6]
    6. spring device (30) according to claim 5, wherein between the rod end (38) of the guide rod (37) and the support flange (66) of the third connection unit (65) a third compression spring (39) is arranged, via which the rod head (38 ) is supported on the support flange (66) when the first compression spring (56) is stretched.
    [7]
    7. Spring device (30) according to one of claims 3 to 6, wherein the second compression spring (60) is designed as a helical compression spring and the third connection unit (65) has a sleeve-shaped second extension (68) which extends radially outward of the first extension (67 ) of the third connection unit (65) extends longitudinally along the second compression spring (60) toward the first longitudinal end (61) thereof from the support flange (66) by a predetermined length, the second extension (68) of the third connection unit (65 ) extends through the interior of the second compression spring (60) and coaxially with the first extension (67) of the third connection unit (65), so that the second extension (68) provides a longitudinal guide for the second compression spring (60), and wherein the length of the second extension (68) of the third connection unit (65) is smaller than an extended length of the second compression spring (60).
    [8]
    A spring device (30) according to any one of claims 1 to 7, wherein the second connection unit (45) has a connecting portion (46) for connecting to the other one of the rotational axis (A3) of the feed roller (12) and the stationary member (10a) A retractor (10) and a gantry-shaped support portion (48) for supporting the first longitudinal end (61) of the second compression spring (60), and wherein the gantry-shaped support portion (48) has two legs (49) diametrically opposed longitudinally along the second compression spring (60) and which are connected at a respective first longitudinal end thereof to the connecting portion (46), and a supporting web (50) which connects respective second longitudinal ends of the two legs (49) and at which the first longitudinal end (61) of second compression spring (60) is supported.
    [9]
    A spring device (30) according to claim 8, wherein said connecting portion (46) of said second connection unit (45) is disposed in a stretched state of said second compression spring (60) adjacent to said second longitudinal end (62) thereof.
    [10]
    10. spring device (30) according to claim 8 or 9, wherein the connecting portion (46) of the second connection unit (45) provides an outer diameter side longitudinal guide for the second compression spring (60).
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    同族专利:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014118435.1A|DE102014118435B4|2014-12-11|2014-12-11|spring means|
    DE102014118435.1|2014-12-11|
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