Auxiliary device for dismantling transmission shaft support

Abstract

The utility model discloses an auxiliary device for dismantling a transmission shaft support, which relates to the field of transmission shaft assemblies and comprises a first support plate, a second support plate and a stand column connected between the first support plate and the second support plate. The clamping plate is of a left-right split structure and is driven by the pull rod to do relative opening and closing movement along the sliding groove, a step is formed in the clamping plate, after the shaft head penetrates through the first support plate, the positioning sleeve is supported on the step, and the rubber body abuts against the first support plate. External force is applied to the shaft head in the axial direction, so that the positioning sleeve is separated from the shaft head. The support can be fixed in advance through the clamping plate, manual assistance can be reduced, axial displacement of the screw rod is achieved through the nut and the screw rod, axial load is applied to the positioning sleeve, pre-stretching is conducted firstly, pressing-out is conducted secondly, and a support assembly is dismantled.

Description

Technical Field

[0001] The utility model relates to the field of transmission shaft assemblies, in particular to a transmission shaft bracket removal auxiliary device. Background Art

[0002] The existing transmission shaft bracket assembly uses a locating sleeve with an interference fit on the shaft head to achieve axial positioning of the bracket bearing. Due to the large interference fit between the locating sleeve and the shaft head, it cannot be removed by knocking.

[0003] Currently, there is no effective method to remove the bracket during the rework or disassembly analysis of the bracket. Due to limited space, the retractor cannot enter the step surface of the positioning sleeve and the puller tool cannot be used. Therefore, it can only be removed by manual labor, which is time-consuming and labor-intensive, and easily causes damage to the bracket bearing. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a transmission shaft bracket removal auxiliary device, which can pre-fix the bracket through a clamping plate, reduce manual assistance, realize the axial displacement of the screw through the nut and screw, apply axial load to the positioning sleeve, pre-tension it first, and then press it out to remove the bracket assembly.

[0005] The purpose of the present utility model is achieved through the following technical solutions: a transmission shaft bracket disassembly auxiliary device, the transmission shaft bracket includes a shaft head and a positioning sleeve that is interference fit on the shaft head, a bearing is installed on the shaft head below the positioning sleeve, a bracket shell is arranged outside the bearing, and a rubber body is arranged between the bearing and the bracket shell, the device includes a first support plate, a second support plate and a column connected therebetween, a slide groove is provided on the first support plate for inserting a card; the card adopts a left and right split structure, and is driven by a pull rod to move relatively open and close along the slide groove, a step is provided on the card plate, so that after the shaft head passes through the first support plate, the positioning sleeve is supported on the step, and the rubber body is against the first support plate; the positioning sleeve is separated from the shaft head by applying external force to the shaft head in the axial direction.

[0006] As a further technical solution, a guide hole is provided through the card plate, and a corresponding guide hole is also provided on the first support plate, so that the guide rod passes through the first support plate and the card plate in sequence to guide the sliding of the card plate.

[0007] As a further technical solution, a pull rod groove is provided on the card plate for installing the pull rod. The other end of the pull rod is inserted into the first support plate and connected to the pull rod bolt. A bolt sliding groove is provided at a position corresponding to the pull rod bolt on the first support plate. When the pull rod bolt slides along the bolt sliding groove, it drives the pull rod and the card plate to slide.

[0008] As a further technical solution, a quick-change slot is provided on the second support plate, so that the column can be connected to the second support plate in an upside-down or upside-down manner.

[0009] As a further technical solution, it also includes a nut seat, a screw rod and a screw nut that cooperates with the screw rod. The second support plate is arranged above the first support plate, and the nut seat is fixed on the second support plate to support the screw rod nut. The screw rod nut is driven by a wrench, and the screw rod passes through the nut seat and is connected to the shaft head. When the wrench is turned, the shaft head is synchronously driven to move up and down through the screw rod.

[0010] As a further technical solution, a connecting head is installed at the lower end of the screw rod, and the upper end of the shaft head is inserted into the connecting head and is locked and fixed by a locking bolt.

[0011] As a further technical solution, the first support plate is arranged above the second support plate, so that the shaft head extends upward from the device for striking.

[0012] The beneficial effects of the utility model are:

[0013] 1. Pre-fix the bracket with a clamp to reduce manual assistance. Use a wrench to achieve axial displacement of the screw rod and apply axial load to the positioning sleeve. Pre-tension first and then press it out to dismantle the bracket assembly. This protects the bearing from axial impact loads and plays a protective role in parts analysis, avoiding additional influencing factors.

[0014] 2. Both the first support plate and the second support plate adopt a quick-change design, which makes it easy to interchange their upper and lower positions;

[0015] 3. If the drive shaft assembly is allowed to be cut, a portable device can be used. No screw assembly is required and the dismantling can be achieved by knocking on the shaft head, making the overall structure simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 2 of the present utility model.

[0017] Figure 2 This is a schematic diagram of the top structure of Example 2 of the present utility model.

[0018] Figure 3 This is a side structural diagram of Example 2 of the present utility model.

[0019] Figure 4 for Figure 2 AA cross-sectional view.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the card board in the utility model.

[0021] Figure 6 This is a schematic diagram of the top view of the card board in the utility model.

[0022] Figure 7 for Figure 6 BB cross-sectional view.

[0023] Figure 8 This is a schematic diagram of the three-dimensional structure of Example 1 of the present utility model.

[0024] Figure 9 This is a schematic diagram of the top structure of Example 1 of the present utility model.

[0025] Figure 10 This is a side structural diagram of Example 1 of the present utility model.

[0026] Figure 11 for Figure 9 CC cross-sectional view.

[0027] Explanation of the accompanying drawings: first support plate 1, column 2, second support plate 3, nut seat 4, wrench 5, screw 6, screw nut 7, locking bolt 8, connecting head 9, shaft head 10, positioning sleeve 11, clamping plate 12, pull rod bolt 13, pull rod 14, bearing 15, rubber body 16, bracket housing 17, slide groove 18, guide rod 19, step 20, guide hole 21, pull rod groove 22, bolt sliding groove 23, quick change slot 24. DETAILED DESCRIPTION

[0028] The following is a detailed introduction to the present invention with reference to the accompanying drawings:

[0029] Example 1: As shown in the attached Figures 5-11 As shown, a transmission shaft bracket removal auxiliary device includes a first support plate 1, a column 2, a second support plate 3, a nut seat 4, a wrench 5, a screw 6, a screw nut 7, a locking bolt 8, a connecting head 9, a shaft head 10, a positioning sleeve 11, a clamping plate 12, a pull rod bolt 13, a pull rod 14, a bearing 15, a rubber body 16, a bracket shell 17, a slide groove 18, a guide rod 19, a step 20, a guide hole 21, a pull rod groove 22, a bolt sliding groove 23 and a quick-change clamping groove 24.

[0030] Reference Attachment Figure 8 、 11 The transmission shaft bracket includes a shaft head 10 and a positioning sleeve 11 that is interference-fitted on the shaft head 10. A bearing 15 is also mounted on the shaft head 10 below the positioning sleeve 11. A bracket housing 17 is provided on the outer sleeve of the bearing 15, and a rubber body 16 is provided between the bearing 15 and the bracket housing 17. Furthermore, the second support plate 3 is spaced above the first support plate 1, and four columns 2 are connected therebetween. Preferably, a quick-change slot 24 is provided at each of the four corners of the second support plate 3 to facilitate the connection of the columns 2 to the second support plate 3 in an upside-down or upside-down manner.

[0031] like Figure 8As shown, a slide groove 18 is provided on the surface of the first support plate 1, and the slide groove 18 is built into the card plate 12. Figure 5 、 6 As shown in Figures 7 and 8, the card plate 12 adopts a split structure with two symmetrical left and right pieces. A group of guide holes 21 are formed on the card plate 12. At the same time, corresponding guide holes 21 are also formed on the first support plate 1, so that the guide rod 19 passes through the first support plate 1 and the card plate 12 in sequence, thereby guiding the sliding of the card plate 12. Furthermore, a pull rod groove 22 is formed on the outside of the card plate 12, and the installation pull rod 14 is inserted into the pull rod groove 22. The other end of the pull rod 14 passes through the corresponding hole in the first support plate 1 and is connected to a pull rod bolt 13. A bolt sliding groove 23 is formed on the first support plate 1 at a position corresponding to the pull rod bolt 13, and the head of the pull rod bolt 13 is exposed from the top of the bolt sliding groove 23. When the pull rod bolt 13 slides along the bolt sliding groove 23, it synchronously drives the pull rod 14 and the card plate 12 to slide.

[0032] The left and right clamping plates 12 are driven by the pull rod 14 to move relative to each other along the slide groove 18. Figure 5 As shown, a step 20 is provided on the clamping plate 12 so that after the shaft head 10 passes through the first support plate 1 , the positioning sleeve 11 can be supported on the step 20 , while the rubber body 16 rests on the lower end surface of the first support plate 1 .

[0033] Further, such as Figure 8 、 10 As shown in Figures 1 and 11, the second support plate 3 is arranged above the first support plate 1, and the nut seat 4 is fixedly connected to the second support plate 3 by bolts. A screw nut 7 is installed in the nut seat 4 for relative rotation. The screw nut 7 is connected with the screw rod 6 and driven by the wrench 5. After the screw rod 6 passes through the nut seat 4, a connector 9 is installed at the lower end of the screw rod 6. The upper end of the shaft head 10 extends into the connector 9 and is locked and fixed by the locking bolt 8, so that the lower end of the screw rod 6 is connected to the shaft head 10 for transmission. When the wrench 5 is turned, the shaft head 10 is synchronously driven to move up and down by the screw rod 6, and then an external force is applied to the shaft head 10 in the axial direction to separate the positioning sleeve 11 from the shaft head 10.

[0034] Working process of this embodiment: The utility model can be dismantled when the transmission shaft is provided with a shaft tube. The wrench 5 drives the screw nut 7 to rotate in place (i.e., rotate relative to each other in the nut seat 4), thereby driving the screw 6 to move up and down. The object to be dismantled is the positioning sleeve 11, which is fixed to the shaft head 10 by an interference fit. The connector 9 is connected and locked to the shaft head 10 by the locking bolt 8. By rotating the wrench 5 and pulling the shaft head 10 (making the shaft head 10 rise first), the rubber body 16 is immediately pressed against the lower end surface of the first support plate 1 and deformed. Then, the pull rods 14 on both sides are pulled by the pull rod bolts 13, thereby driving the two clamping plates 12 to close relative to each other, so that the outer edge of the positioning sleeve 11 rests on the step 20 of the clamping plate 12. At this time, the wrench 5 is rotated in the opposite direction to move the screw 6 downward, pressing the shaft head 10, so that the positioning sleeve 11 is pressed out of the shaft head 10, and the bracket assembly can be dismantled.

[0035] Example 2: The difference from Example 1 is that in this example, when the drive shaft assembly is allowed to be cut, a portable device can be used, that is, the screw assembly is no longer required. Figures 1 to 4 As shown, the first support plate 1 and the second support plate 3 are interchanged using the quick-change slot 24, so that the first support plate 1 is set above the second support plate 3. At the same time, the nut seat 4, wrench 5, screw 6, screw nut 7, locking bolt 8, connector 9 and other parts on the second support plate 3 are removed, and the shaft head 10 extends directly upward from the first support plate 1. In some cases where quick disassembly is required and no protective bracket is required, the bearing 15 can withstand impact loads. After the drive shaft (shaft head 10) is fixed to the device (the positioning sleeve 11 is still positioned with the step 20 on the clamping plate 12), a hammer can be used to strike the top of the shaft head 10 for quick removal.

[0036] It is understandable that for those skilled in the art, any equivalent replacement or change of the technical solution and the concept of the utility model should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A transmission shaft bracket removal auxiliary device, the transmission shaft bracket comprising a shaft head (10) and a positioning sleeve (11) interference-fitted on the shaft head (10), a bearing (15) being sleeved on the shaft head (10) below the positioning sleeve (11), a bracket housing (17) being arranged outside the bearing (15), and a rubber body (16) being arranged between the bearing (15) and the bracket housing (17), characterized in that: The invention comprises a first support plate (1), a second support plate (3) and a column (2) connected therebetween. A slide groove (18) is provided on the first support plate (1) for inserting a card plate (12). The card plate (12) adopts a left-right split structure and is driven by a pull rod (14) to move relatively open and close along the slide groove (18). A step (20) is provided on the card plate (12) so that after the shaft head (10) passes through the first support plate (1), the positioning sleeve (11) is supported on the step (20) and the rubber body (16) is against the first support plate (1). By applying an external force to the shaft head (10) in the axial direction, the positioning sleeve (11) is separated from the shaft head (10).

2. The drive shaft bracket removal auxiliary device according to claim 1, characterized in that: A guide hole (21) is formed through the card plate (12), and a corresponding guide hole (21) is formed on the first support plate (1), so that the guide rod (19) passes through the first support plate (1) and the card plate (12) in sequence to guide the sliding of the card plate (12).

3. The drive shaft bracket removal auxiliary device according to claim 1, characterized in that: A pull rod groove (22) is provided on the clamping plate (12) for installing the pull rod (14). The other end of the pull rod (14) penetrates into the first support plate (1) and is connected to the pull rod bolt (13). A bolt sliding groove (23) is provided on the first support plate (1) at a position corresponding to the pull rod bolt (13). When the pull rod bolt (13) slides along the bolt sliding groove (23), it drives the pull rod (14) and the clamping plate (12) to slide.

4. The drive shaft bracket removal auxiliary device according to claim 1, characterized in that: The second support plate (3) is provided with a quick-change slot (24) so ​​that the column (2) can be connected to the second support plate (3) in a head-up or head-down manner.

5. The drive shaft bracket removal auxiliary device according to claim 1, characterized in that: The invention also comprises a nut seat (4), a screw rod (6) and a screw rod nut (7) matched with the screw rod (6); a second support plate (3) is arranged above the first support plate (1); the nut seat (4) is fixed on the second support plate (3) and is used to support the screw rod nut (7); the screw rod nut (7) is driven by a wrench (5); the screw rod (6) passes through the nut seat (4) and is connected to the shaft head (10); when the wrench (5) is turned, the shaft head (10) is synchronously driven to move up and down through the screw rod (6).

6. The drive shaft bracket removal auxiliary device according to claim 5, characterized in that: The lower end of the screw rod (6) is installed with a connector (9), and the upper end of the shaft head (10) is inserted into the connector (9) and is locked and fixed by a locking bolt (8).

7. The drive shaft bracket removal auxiliary device according to claim 1, characterized in that: The first support plate (1) is arranged above the second support plate (3) so that the shaft head (10) extends upward out of the device for striking.

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