• 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:
    The protection device (8) for pulleys (3, 4) for transport lines (1, 1a, 1b, 1c) comprises two bodies (11), each of which has a first portion (12) that develops longitudinally according to a circular arc and is near a section of the peripheral edge of the corresponding pulley (3, 4), a second portion (14) that originates at a first end of the first portion (12) and has a recess (15) adapted to accommodate a section of a belt (7) wrapped around the pulley (3, 4) and the fixing means (18, 21) between the first portions (12) of the bodies (11) facing each other and they form the central part of the protection device (8); the fixing means (18, 21) are adapted to allow the longitudinal length of the central part of the protection device (8) to be selected. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2736623A2
    申请号:ES201930466
    申请日:2019-05-28
    公开日:2020-01-03
    发明作者:Gian Carlo Franchini
    申请人:F M Srl；FM Srl；
    IPC主号:
    专利说明:

    [0001]
    [0002]
    [0003]
    [0004] Cross-reference to related applications
    [0005] This patent application claims priority of Italian patent application No. 102018000005867 filed on May 30, 2018, the entire disclosure of which is incorporated herein by reference.
    [0006] Field of the Invention
    [0007] The present invention relates to a pulley protection device for package transport lines.
    [0008] State of the art
    [0009] As is known, in some transport lines the conveyor elements consist of belts wrapped around two pulleys; The transported package is positioned on the top of the belts. The various safety laws provide a device that avoids, in the vicinity of the area where the belt is wrapped around the pulley, the possibility that the operator's limbs or fingers are inserted between the belt and the pulley. In addition, the aforementioned laws provide that the protection device can be removed only and exclusively using special tools.
    [0010] The current protection devices comprise a body that extends along a circular arc, at whose longitudinal ends there are two terminals on which the tape runs.
    [0011] The transport lines can have pulleys of the same diameter or pulleys of different diameter. The combination for pulleys of different diameters entails a variation of the angle between the section of the belt entering and the section of the belt leaving the pulley. It should be noted that the amplitude of this angle is a function of the difference between the diameters of the pulleys and the distance between these pulleys. With pulleys of the same diameter, the sections of the belt that exit and enter are parallel to each other, while the angle mentioned above is convergent when the distance between the two sections (which exit and enter the pulley) gradually increases as these sections are close to the pulley and the angle mentioned above is divergent when the distance between the two sections (which exit and enter the pulley) gradually decreases as these sections get closer to the pulley.
    [0012] It is clear that the main drawback found in current protection devices is the fact that the terminals mentioned above they are parallel to each other and, therefore, also require the parallelism of the sections of the belt entering and leaving the pulley. However, this protection cannot be used in the case of transport lines with pulleys that have different diameters, since spaces would be created, in which the limbs or fingers of the operator could be inserted. In addition, it is clear that the tape must change direction at the edge of the free end of the terminal and this causes greater wear on the tape.
    [0013] Disclosure of the invention
    [0014] The objective of the present invention is to produce a protection device for pulleys for transport lines without the aforementioned drawbacks.
    [0015] The subject matter of the present invention consists of a protection device for pulleys for transport lines characterized by comprising two bodies, each having a first portion that develops longitudinally according to a circular arc and is near a section of the peripheral edge of the corresponding pulley, a second portion that originates at a first end of said first portion and has a recess adapted to accommodate a section of a tape wound around said pulley and fixing means between said first portions of said bodies facing each other and constitute the central part of said protection device; said fixing means are adapted to allow the longitudinal length of said central part of said protection device to be selected.
    [0016] Brief description of the figures
    [0017] For a better understanding of the invention, purely by way of example, a preferred embodiment is described, in which:
    [0018] Figure 1 is a perspective view of a transport line in which the protection device produced according to the dictates of the present invention is fitted;
    [0019] Figure 2 is a perspective view of the protection device illustrated in Figure 1; Y
    [0020] Figures 3, 4 and 5 are perspective views of other transport lines on which the protection device produced according to the dictates of the present invention is fitted.
    [0021] Best embodiment of the invention
    [0022] Referring to Figure 1, the number 1 indicates as a whole a transport line adapted to transport a package 2 (illustrated with a broken line) and comprising:
    [0023] two front pulleys 3;
    [0024] two rear pulleys 4 of smaller diameter than the front pulleys 3; a drive shaft 5 connected to a motor, not shown, in which the front pulleys 3 are mounted;
    [0025] a driven shaft 6 on which the rear pulleys 4 are mounted;
    [0026] two belts 7, one wound around a first front pulley 3 and around a first rear pulley 4 and the second wound around a second front pulley 3 and around a second rear pulley 4; Y
    [0027] a protection device 8 for each of the pulleys 3 and 4 mentioned above.
    [0028] Figure 2 illustrates in a perspective view the protection device 8 comprising two bodies 11, which in this embodiment are perfectly identical. Each body 11 comprises a portion 12 that develops longitudinally along a circular arc and has, along most of its longitudinal axis, a through slot 13 open on both sides; the portions 12 facing each other; the portion 12 is near a section of the peripheral edge of the corresponding pulley 3 and 4. Each body 11, at a first end of its portion 12, has a portion 14 (called "terminal" in the field) in which there is a recess 15 adapted to accommodate a section of the corresponding tape 7. In addition, a flap 16 protrudes from the second portion 14, which, as illustrated in Figure 1, is housed (fixedly) in a section bar 17 fixed in a manner not shown to a frame of the transport line 1 In essence, the protection device 8 comprises a central part consisting of the two opposite parts 12 and two opposite end parts consisting of the corresponding portion 14.
    [0029] As illustrated in Figure 2, fixing means are provided between the two bodies 11; fixing means that allow selecting the longitudinal length of the aforementioned central part of the protection device 8. The fixing means are provided (in this embodiment) with two screws 18 and related nuts 21. In particular, the portion 12 at the end opposite the end from which the portion 14 originates has a through hole 22. In use, the screw shank 18 extends through the groove 13 of a first body 11 so that the shank enters the hole 22 of the second body 11 where the nut 21 is screwed to the shank. It is evident that, depending on the position along the groove 13 into which the screw shank 18 enters, it is possible to vary the longitudinal development of the central part of the protection device 8 consisting of the portions 12 and, by consequently, the distance between portions 14. In addition, it is clear that varying the distance between portions 14 also means varying the defined angle between the longitudinal axes of these portions 14 which, therefore, can be parallel to each other, convergent or divergent.
    [0030] In essence, as illustrated in Figure 2, it is possible to adapt the protection device 8 to the angle defined between the longitudinal axes of the portions 14 depending on the diameter of the other pulley 4 or 3. To confirm this, the Figures 3, 4 and 5, illustrating the transport lines 1a, 1b and 1c. Figure 3 illustrates the transport line 1a provided with front pulleys 3 of the same diameter as the rear pulleys 4. Figure 4 illustrates the transport line 1b provided with the front pulleys 3 and the rear pulleys 4 of the same diameter but also provided with two rows of pulleys 31 (one row for each belt 7) of smaller diameter, in which the upper section of the belts 7 rests and is positioned at a higher level than pulleys 3 and 4, so that portions 14 Do not parallel each other. Figure 5 illustrates the transport line 1c in which there are front pulleys 3 of a smaller diameter than the rear pulleys 4.
    [0031] As illustrated in Figures 1, 3, 4 and 5, the protection device 8 can be adapted to the angle between the sections of the belts 7 that exit and enter by varying the length of its central part. All this makes it impossible to create spaces between the belts 7 and the various pulleys into which the limbs or fingers of the operator can be accidentally inserted. In addition, no corners are created along the path of the belts 7, which reduces their wear.
    [0032] It is evident that the embodiment of the protection device 8 may differ from that illustrated in Figure 2 without departing from the principle of comprising two bodies that can be fixed together to form a central part of adjustable length to vary the distance between the portions 14 and, Therefore, its angle.
    权利要求:
    Claims (4)
    [1]
    1. A protection device (8) for pulleys (3, 4) for transport lines (1, 1a, 1b, 1c), characterized in that it comprises two bodies (11), each of which has a first portion ( 12), which develops longitudinally according to a circular arc and is near a section of the corresponding peripheral edge of the pulley (3, 4), a second portion (14), which originates at a first end of said first portion (12 ) and has a recess (15) adapted to accommodate a section of a belt (7) wrapped around said pulley (3, 4), and fixing means (18, 21) between said first portions (12) of said bodies ( 11), which face each other and form the central part of said protection device (8); said fixing means (18, 21) are adapted to allow the longitudinal length of said central part of said protection device (8) to be selected.
    [2]
    2. A protection device (8) according to claim 1, characterized in that said first portion (12) has, along most of its longitudinal axis, a through slot (13) and, at the end opposite to the part from which said second portion (14) originates, a through hole (22); said fixing means consist of a screw (18), whose rod extends through said groove (13) of a first body (11) and enters said hole (22) of the second body (11), where a nut ( 21) is screwed into the stem; by doing so, based on the position along said groove (13) into which the rod of said screw (18) enters, it is possible to vary the longitudinal development of said central part of said protection device (8) and, by therefore, varying the distance between said second portions (14) of the two bodies (11) and the angle of said second portions (14).
    [3]
    3. A protection device (8) according to claim / s 1 and / or 2, characterized in that said bodies (11) are identical to each other.
    [4]
    4. A protection device according to at least one of the preceding claims, characterized in that a flap (16) protrudes from said second portion (14) and is fixed to a section bar (17) supported by a frame of said line of transport (1, 1a, 1b, 1c).
    类似技术:
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    ES2791533T3|2020-11-04|Discreet transport unit, for blueberries and similar fruit or vegetable products
    PE20030529A1|2003-06-18|APPARATUS FOR TRANSPORTING GUTTIFORM MASS OF CAST GLASS TO A MACHINE TO FORM GLASS CONTAINERS
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    US6302264B1|2001-10-16|Conveyor system for plants
    同族专利:
    公开号 | 公开日
    ES2736623B2|2020-06-22|
    IT201800005867A1|2019-11-30|
    ES2736623R1|2020-02-21|
    BR102019011095A2|2019-12-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    USRE17380E|1929-07-23|holzer |
    US739148A|1903-02-07|1903-09-15|Elijah S Buckley|Pulley.|
    FR1213064A|1958-10-24|1960-03-29|Amerio & Grasso|Advanced chain guide|
    GB1256879A|1968-04-25|1971-12-15|
    GB1509010A|1976-10-07|1978-04-26|Conveyors Ltd|Unitary assembly forming a shaft mounted driving means|
    US4114473A|1976-12-01|1978-09-19|Pollak Henry M|Guard for belt pulley|
    IT1135351B|1981-02-06|1986-08-20|Catene Calibrate Regina|TENSIONER FOR TRANSMISSION BODIES OF A MOTORCYCLE, SUCH AS ROLLER CHAINS, BELTS AND SIMILAR|
    FR2701964B1|1993-02-24|1995-05-19|Staubli Sa Ets|Pulley guard for the pulling systems associated with the heald frames of the weaving machines.|
    DE4434714C2|1994-09-28|1996-10-17|Froreich Andre Von|Conveyor system|
    JP4945821B2|2001-02-12|2012-06-06|シェフラーテクノロジーズアクチエンゲゼルシャフトウントコンパニーコマンディートゲゼルシャフト|Continuously adjustable conical disk-type winding transmission|
    US7882944B1|2009-01-12|2011-02-08|Tkf, Inc.|Drive belt guard for a roller conveyor|
    US9327786B2|2012-08-17|2016-05-03|Eko Sport, Inc.|Chain guard with unitary bracket extension|
    DE112016004409A5|2015-09-29|2018-06-21|Schaeffler Technologies AG & Co. KG|Slide rail for a belt of a belt drive and measuring method for determining an applied torque on a cone pulley pair|
    DE102016108135B4|2016-05-02|2019-05-23|Wipotec Wiege- Und Positioniersysteme Gmbh|Intervention guard for belt drive|
    法律状态:
    2020-01-03| BA2A| Patent application published|Ref document number: 2736623 Country of ref document: ES Kind code of ref document: A2 Effective date: 20200103 |
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    优先权:
    申请号 | 申请日 | 专利标题
    IT102018000005867A|IT201800005867A1|2018-05-30|2018-05-30|PULLEYS PROTECTION DEVICE FOR TRANSPORT LINES|
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