• 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:
    Device (1) with a holding device (20) for positioning a screw nut (11) of a screw connection in overhead assembly and disassembly and / or for positioning a fastening nut of a pretensioning device for the screw connection in overhead assembly and disassembly, wherein a first component (16 ) can be connected to a second component (17) through the screw connection, the first component (16) and the second component (17) being arranged essentially vertically and stationary to one another and wherein the first component (16) in the vertical direction above the second Component (17) is arranged, wherein the screw connection comprises a screw (12) which comprises a first section (14) and a second section (15) and wherein the first section (14) of the screw (12) at its vertically upper end is connectable to the first component (16) and wherein the second section (15) of the screw (12) by a substantially vertical in the second Component (17) arranged bore (18) passes through it and wherein the part of the second section (15) of the screw (12) protruding vertically downward from the second component (17) has a thread (13) in this area for fastening the screw nut (11 ) comprises and / or comprises a thread (32) for fastening the pretensioning device (35) by a fastening nut thereof, the holding device (20) moving the screw nut (11) or the pretensioning device (35) and its fastening nut from an initial position ( 21) in a holding position (22) for screwing with the screw (12) and / or when dismantling from an initial position (21) to a catching position (22) for unscrewing the screw nut (11) from the screw (12) or . brings about unscrewing the fastening nut of the pretensioning device (35) from the screw (12), characterized in that the screw (12) is both part of the screw connection for connecting the first component (16) to the second component (17), as well as part of the holding device (20), wherein the screw (12) at its lower end comprises a device (19) for releasable connection with a power transmission means (23) and this power transmission means (23) with a drive device (24) is movably in operative connection, the drive device (24) being mounted stationary in a housing (25) and this housing (25) at its vertically upper end the holding device (20) for the screw nut (11) and / or the holding device (20) for the pretensioning device and its fastening nut, wherein the operative connection between the power transmission means (23) and the drive device (24) enables a vertical movement of the housing (25) and thereby the holding device (20) between the starting position (21), the from the screw (12) is spaced vertically downwards, and the holding or catching position (22), which is directly opposite the screw (12), back and forth is movable.
    公开号:CH712345B1
    申请号:CH00293/17
    申请日:2017-03-10
    公开日:2021-03-31
    发明作者:Schneider Martin；Macanovic Mirso
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    The invention relates to a device with a holding device for positioning a screw nut of a screw connection in overhead assembly and disassembly and / or for positioning a fastening nut of a pretensioning device for the screw connection in overhead assembly and disassembly according to the preamble of claim 1.
    When assembling large vertically arranged components, such as housings of turbo machines, difficulties arise during assembly and disassembly due to the size of the individual components. In order to be able to create a permanent connection between the individual components, the housing halves in particular are separated into the lower and upper parts by a horizontal parting line and are then permanently attached by means of screw connections.
    Usually, the screws are screwed from below through a bore from the lower housing half into the upper housing half, so that the lower free end of the screws is available for screwing with a screw nut.
    Through this screw-nut connection, the components are frictionally fixed to one another, in that the screw and nut are screwed together while elongating the screw. According to the law of materials, this elongation causes a preload in the screw, which applies the normal force required for the frictional connection of the component to the components.
    In particular, to connect the components of turbo machines, it is advantageous to use hydraulic clamping devices. These first lengthen the screw hydraulically before the nut of the screw connection is then tightened. When the longitudinal hydraulic pressure is removed, the screw is then supported in the nut, which maintains the elongation of the screw and thus the desired preload. Conversely, to loosen the screw connection, the nut can be relieved and then loosened by renewed hydraulic length of the screw.
    As already explained at the beginning, it is common for large turbomachines that their housings are divided horizontally and the two housing halves are connected with screws of, for example, 65 kg and nuts of, for example, 25 kg.
    Due to the predetermined arrangement of the screws, the screwing of the nut must often be done overhead by hand, because due to the tight space on the base frame of a turbo machine and due to the surrounding supply lines for the turbo machine, the assembly or disassembly of the nuts is using a pallet truck or other auxiliary equipment is usually not possible.
    The foregoing also applies to the assembly or disassembly of the pretensioning device, which is sometimes still a greater weight 90 kg and more unwieldy than the nut of the screw connection for the housing parts to be connected.
    According to previous assembly methods, the assembly or disassembly was carried out with two people overhead, which was not optimal in terms of ergonomics and occupational safety.
    The invention is therefore based on the object of providing a device with which on the one hand the nut of the screw connection for the components to be connected and on the other hand the fastening nut of the pretensioning device in overhead mounting in an optimal position for fastening to the screw of the screw connection for the to be connected Components is brought.
    The object according to the invention is achieved by the device according to claim 1.
    The respective dependent claims relate to advantageous developments.
    The inventive device is a device with a holding device for the positioning of a screw nut of a screw connection in overhead assembly and disassembly and / or for the positioning of a fastening nut of a pretensioning device for the screw connection in overhead assembly and disassembly, these in each case can be used for overhead assembly and disassembly of a screw connection of two essentially vertically arranged components.
    With the help of the novel device, the assembly or disassembly of screw connections overhead can be carried out easily even in tight spaces, the basic principle of the device on the one hand, the optimal positioning of the screw nut for the screw connection of the components to be connected and on the other hand, the optimal positioning of the fastening nut guaranteed for the pretensioner in relation to the screw.
    This novel device prevents the screw nut or the fastening nut for the pretensioning device from falling down during assembly or disassembly and there are dangers for the fitters.
    In addition, the device ensures that the nut on the one hand and the fastening nut for the pretensioning device on the other hand always find an optimal point of engagement with respect to the thread of the screw and thus tilting on the one hand the nut or on the other hand the fastening nut of the pretensioner is prevented.
    Embodiments of the invention are shown in the drawings and are explained in more detail below. 1 shows a device according to the invention during the positioning of the nut of a screw connection, and FIG. 2 shows the device from FIG. 1 when positioning the fastening nut of a pretensioning device for the screw connection.
    Figure 1 shows a device 1 according to the invention, in a first situation, this being focused on providing a holding device 20 for the nut 11 of a screw connection for overhead assembly and disassembly.
    The device 1 according to Figure 1 is initially in a starting position 21, d. H. The holding device 20 transfers the screw nut 11 during assembly from this starting position 21 to a holding position 22 for screwing with the thread 13 of the screw 12 and thus for fastening the first component 16 to the second component 17.
    In this holding position 22, the device 1 can be in the assembly position for the nut or the holding device 20 can alternatively be in a catching position 22 (dismantling) for unscrewing the nut 11 from the screw 12.
    The device 1 according to Figure 1 thus serves to position a holding device 20 for a screw connection in overhead assembly and disassembly, wherein the screw connection connects a first component 16 with a second component 17 and wherein the first component 16 and the second component 17 are arranged essentially vertically and stationary with respect to one another, and wherein the first component 16 is arranged above the second component 17 in the vertical direction.
    The screw connection comprises a screw 12, which comprises a first section 14 and a second section 15 and wherein the first section 14 of the screw 12 is connected at its vertically upper end to the first component 16 (not shown) and wherein the second Section 15 of the screw 12 passes through a bore 18 arranged essentially vertically in the second component 17 and the part of the second section 15 of the screw 12 protruding vertically downward from the second component 17 has a thread 13 in its upper region for fastening the screw nut 11 includes.
    When assembling the nut 11, the holding device 20 brings the nut 11 from a starting position 21 to a holding position 22 for screwing with the screw 12 and / or when dismantling the nut 11, the holding device 20 can move from a starting position 21 to a catching position 22 for Unscrewing the nut 11 can be brought from the screw 12.
    In the device 1 according to the invention, the screw 12 is both part of the screw connection for connecting the first component 16 to the second component 17, and also part of the device 1 for positioning the holding device 20.
    At the lower end, the screw 12 comprises a device 19 for releasable connection to a force transmission means 23, which is operatively connected to a drive device 24 so as to be movable. The drive device 24 is mounted in a stationary manner in a housing 25, the housing 25 including the holding device 20 for the screw nut 11 at its vertically upper end.
    Due to the operative connection between the power transmission means 23 attached to the screw 12 and the drive device 24, a vertical movement of the housing 25 is made possible, thereby the holding device 20 between the starting position 21, which is spaced vertically downward from the screw 12, and the holding or catching position 22, which is directly opposite the screw 12, can be moved back and forth.
    The drive device 24 can comprise a pinion 26 to which the vertical movement of the power transmission means 23 is transferred into a rotary movement, or, in other words, the rotary movement of which causes the vertical movement of the housing. The pinion 26 can be arranged on a shaft 27 which is driven by hand 28 and / or by an electric motor 29.
    It is also advantageous if the shaft 27 of the drive device 24 is in operative connection with a self-locking worm gear (not shown).
    It is also possible for the holding device 20 to be movably mounted on the housing 25 of the drive device 24; in addition, the holding device 20 can comprise complementary elements for engaging the screw nut 11.
    The power transmission means 23 can on the one hand be arranged essentially coaxially to the holding device 20 and on the other hand can also be arranged essentially coaxially to the screw 12 of the screw connection.
    The force transmission means 23 can also be rigid or movable or, advantageously, also be designed as a roller chain.
    It when the force transmission means 23 is screwably connected 19 to the screw 12 of the screw connection is particularly advantageous.
    A sleeve (not shown) and / or a washer (not shown) can advantageously be arranged between the screw nut 11 and the second component 17, and these can also be brought into the holding or catching position 22 by the holding device 20.
    Figure 2 shows the device 2 in a second situation, this being focused on providing a holding device 20 for the fastening nut 30 of a pretensioning device 35 of a screw connection for overhead assembly and disassembly.
    The device 2 according to the representations of Figure 2 is in a starting position 21, d. H. During assembly, the holding device 20 transfers the pretensioning device 35 and its fastening nut 30 from this starting position 21 to a holding position 22 for screwing with the thread 31 of the screw 12.
    In this holding position 22, the device 2 can on the one hand be in the assembly position for the fastening nut 30 of the pretensioning device 35 or the holding device 20 can alternatively be in a catching position 22 (dismantling) for unscrewing the fastening nut 30 of the pretensioning device 35 from the screw 12 are located.
    The device 2 according to Figure 2 thus serves to position a holding device 20 for a pretensioning device 35 and its fastening nut 30 for a screw connection in overhead assembly and disassembly, wherein the screw connection connects a first component 16 with a second component 17 and wherein the The first component 16 and the second component 17 are arranged essentially vertically and stationary with respect to one another, and the first component 16 is arranged outside the second component 17 in the vertical direction.
    The screw connection comprises a screw 12, which comprises a first section 14 and a second section 15 and wherein the first section 14 of the screw 12 is connected at its vertically upper end to the first component 16 (not shown) and wherein the second Section 15 of the screw 12 passes through a bore 18 arranged essentially vertically in the second component 17 and the part of the second section 15 of the screw 12 protruding vertically downward from the second component 17 has a thread 31 in its lower region for fastening the pretensioning device 35 encompassed by its fastening nut 30.
    When assembling the biasing device 35 and its fastening nut 30, the holding device 20 brings the fastening nut 30 from an initial position 21 to a holding position 22 for screwing to the screw 12 and / or when dismantling the fastening nut 30, the holding device 20 can move from an initial position 21 in a catching position 22 for unscrewing the fastening nut 30 of the pretensioning device 35 from the screw 12.
    In the device 2 according to the invention, the screw 12 is both part of the screw connection for connecting the first component 16 to the second component 17 and part of the device 2 for positioning the holding device 20.
    At the lower end, the screw 12 comprises a device 19 for the detachable connection to a force transmission means 23, this being operatively connected to a drive device 24 such that it can move. The drive device 24 is mounted in a stationary manner in a housing 25, the housing 25 including the holding device 20 for the screw nut 11 at its vertically upper end.
    The operative connection between the force transmission means 23 attached to the screw and the drive device 24 enables a vertical movement of the housing 25, whereby the holding device 20 between the starting position 21, which is spaced vertically downward from the screw 12, and the Holding or catching position 22, which is directly opposite the screw 12, can be moved back and forth.
    The drive device 24 can comprise a pinion 26 to which the vertical movement of the power transmission means 23 is transferred into a rotary movement, or, in other words, the rotary movement of which causes the vertical movement of the housing.
    The pinion 26 can be arranged on a shaft 27 which is driven by hand 28 and / or by an electric motor 29.
    It is also advantageous if the shaft 27 of the drive device 24 is in operative connection with a self-locking worm gear (not shown).
    It is also possible for the holding device 20 to be movably mounted on the housing 25 of the drive device 24; in addition, the holding device 20 can comprise complementary elements for engaging with the screw nut 11.
    The force transmission means 23 can on the one hand be arranged essentially coaxially with respect to the holding device 20 and, on the other hand, can also be arranged essentially coaxially with the screw 12 of the screw connection.
    The force transmission means 23 can also be rigid or movable or, advantageously, also be designed as a roller chain.
    It when the force transmission means 23 is screwably connected 19 to the screw 12 of the screw connection is particularly advantageous.
    It is also possible that the prestressing device 35 is constructed in several parts in the vertical direction and the fastening nut 30 of the prestressing device 35 is located at the vertically upper end and the vertically lower section is provided for engagement with the holding device 20.
    Reference number
    1 device for screw nut of the screw connection 2 device for pretensioning device and its fastening nut 11 screw nut of the screw connection 12 screw of the screw connection 13 thread of the screw for screw nut 14 first section of screw 15 second section of screw 16 first component 17 second component 18 hole 19 detachable Connecting device 20 Holding device 21 Starting position 22 Holding or catching position 23 Power transmission means 24 Drive device 25 Housing 26 Pinion 27 Shaft 28 Hand drive 29 Motor drive 30 Fastening nut of the pretensioning device 31 Thread of the screw for the pretensioning device 32 Bearing for the holding device 33 Disc of the pretensioning device 34 Guide sleeve of the pretensioning device 35 Pretensioning device
    权利要求:
    Claims (11)
    [1]
    1. Device (1, 2) with a holding device (20) for positioning a screw nut (11) of a screw connection for overhead assembly and disassembly and / or for positioning a fastening nut (30) of a pretensioning device (35) for the screw connection for overhead assembly and dismantling,wherein a first component (16) can be connected to a second component (17) by means of the screw connection,wherein the first component (16) and the second component (17) are arranged essentially vertically and stationary to one another and wherein the first component (16) is arranged in the vertical direction above the second component (17),wherein the screw connection comprises a screw (12) which comprises a first section (14) and a second section (15) and wherein the first section (14) of the screw (12) at its vertically upper end with the first component (16) is connectable and wherein the second section (15) of the screw (12) passes through a substantially vertically arranged bore (18) in the second component (17) and wherein the part of the second section protruding vertically downward from the second component (17) (15) of the screw (12) in this area comprises a thread (13) for fastening the screw nut (11) and / or comprises a thread (32) for fastening the pretensioning device (35) by means of a fastening nut (30) thereof,wherein the holding device (20) during assembly brings the screw nut (11) or the pretensioning device (35) and its fastening nut (30) from an initial position (21) to a holding position (22) for screwing to the screw (12) and / or during dismantling from an initial position (21) to a catching position (22) for unscrewing the screw nut (11) from the screw (12) or for unscrewing the fastening nut (30) of the pretensioning device (35) from the screw (12),characterized in thatthe screw (12) is both part of the screw connection for connecting the first component (16) to the second component (17) and part of the holding device (20),wherein the screw (12) at its lower end comprises a device (19) for releasable connection to a force transmission means (23) and this force transmission means (23) is movably in operative connection with a drive device (24),wherein the drive device (24) is mounted in a stationary manner in a housing (25) and this housing (25) has the holding device (20) for the screw nut (11) and / or the holding device (20) for the pretensioning device (35) at its vertically upper end ) and its fastening nut (30),wherein the operative connection between the power transmission means (23) and the drive device (24) enables a vertical movement of the housing (25) and thereby the holding device (20) between the starting position (21), which is spaced vertically downwards from the screw (12) , and the holding or catching position (22), which is directly opposite the screw (12), can be moved back and forth.
    [2]
    2. Device (1,2) according to claim 1,characterized in thatthe drive device (24) comprises a pinion (26), the rotational movement of which causes the vertical movement of the housing (25),wherein the pinion (26) is arranged on a shaft (27) which is driven by hand (28) and / or by an electric motor (29).
    [3]
    3. Device (1,2) according to one of the preceding claims,characterized in thatthe holding device (20) is movably mounted on the housing (25) of the drive device (24).
    [4]
    4. Device (1,2) according to one of the preceding claimscharacterized in thatthe holding device (20) comprises complementary elements for engaging with the screw nut (11) or the fastening nut (30) of the pretensioning device (35).
    [5]
    5. Device (1,2) according to one of the preceding claims,characterized in thatthe force transmission means (23) is arranged essentially coaxially to the holding device (20).
    [6]
    6. Device (1,2) according to one of the preceding claims,characterized in thatthe power transmission means (23) is arranged essentially coaxially to the screw (12) of the screw connection.
    [7]
    7. Device (1,2) according to one of the preceding claims,characterized in thatthe power transmission means (23) is rigid or movable.
    [8]
    8. Device according to one of the preceding claims,characterized in thatthe power transmission means (23) is designed as a roller chain.
    [9]
    9. Device (1,2) according to one of the preceding claims,characterized in thatthe power transmission means (23) is screwably (19) connected to the screw (12) of the screw connection.
    [10]
    10. Device (1) according to claim 1,characterized in thatA guide sleeve (34) and / or a washer (33) is arranged between the screw nut (11) and the second component (17), and these can also be brought into the holding or catching position (22) by the holding device (20).
    [11]
    11. Device (2) according to claim 1,characterized in thatthe prestressing device (35) is constructed in several parts in the vertical direction and the fastening nut (30) of the prestressing device (35) is located at the vertically lower end andwherein the vertically lower portion is provided for engagement with the retainer (20).
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    引用文献:
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    法律状态:
    2018-07-31| PFA| Name/firm changed|Owner name: MAN ENERGY SOLUTIONS SE, DE Free format text: FORMER OWNER: MAN DIESEL AND TURBO SE, DE |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102016205400.7A|DE102016205400A1|2016-03-31|2016-03-31|Device for positioning a holding device for a screw connection in overhead mounting and dismounting|
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