Transmission shaft assembly tool

Abstract

The utility model belongs to transmission shaft installation technical field discloses a transmission shaft assembly tool, and this tool is used for assembling transmission shaft. Specifically including positioning assembly and sleeve. Positioning assembly includes positioning piece and positioning pin, and the positioning piece is provided with limit hole along the axial direction, and one end of transmission shaft can correspondingly be clamped and be limited in the limit hole, and the positioning pin is arranged on one side of the positioning piece along the thickness direction, and the positioning pin can limit the positioning piece in the preset work station; One end of sleeve is provided with opening, and the inside is provided with accommodating cavity, and one end of transmission shaft away from the positioning piece can pass through the opening and enter the accommodating cavity, and the sleeve can cooperate with the nut of transmission shaft, so that when the sleeve rotates, the nut can rotate coaxially. This tool can realize the quick installation and fixation of transmission shaft without damaging the transmission shaft, and also can make the nut on the transmission shaft reach the target pre-tightening force.

Description

Technical Field

[0001] This utility model relates to the field of drive shaft installation technology, and in particular to a drive shaft assembly fixture. Background Technology

[0002] In the filter rod forming and manufacturing industry, the ZL29 forming machine is currently the mainstream filter rod production equipment. It features high production speed, good system stability, and high product quality, and is widely used in major tobacco machinery factories. The core component of the ZL59 forming machine is the transmission mechanism, which is prone to wear after prolonged operation. When the wear exceeds a certain limit, it will affect the operation of the equipment. Therefore, it is necessary to replace the main transmission component (drive shaft) in a timely manner. However, the replacement process requires clamping and fixing the drive shaft, which can easily cause damage to the drive shaft. A damaged drive shaft, after installation, not only has poor operating performance but is also highly susceptible to fatigue fracture, affecting operational safety.

[0003] Therefore, there is an urgent need for a drive shaft assembly fixture to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a drive shaft assembly fixture that enables the rapid installation and fixing of the drive shaft without damaging it, and also enables the nuts on the drive shaft to reach the target preload.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A drive shaft assembly fixture for assembling drive shafts, comprising:

[0007] A positioning component includes a positioning element and a positioning pin. The positioning element is provided with a limiting hole along the axial direction. One end of the drive shaft can be correspondingly engaged and confined within the limiting hole. The positioning pin is provided on one side of the positioning element along the thickness direction. The positioning pin can confine the positioning element to a preset working position.

[0008] The sleeve has an opening at one end and a receiving cavity inside. The end of the drive shaft away from the positioning member can pass through the opening and enter the receiving cavity. The sleeve can cooperate with the nut of the drive shaft so that when the sleeve rotates, the nut can rotate coaxially.

[0009] Preferably, the positioning member is annular and has a mounting groove along its radial direction, the mounting groove extending from at least one side of the annular wall to the limiting hole; along the axial direction of the positioning member, the mounting groove is a through groove.

[0010] Preferably, the mounting groove passes through the limiting hole and extends to the other side of the annular wall, but does not penetrate the other side of the annular wall.

[0011] Preferably, the positioning member is further provided with a locking hole, which is located on the annular wall of the positioning member on the side through which the mounting groove passes, and the locking hole also passes through the annular walls on both sides of the mounting groove. The locking member can be inserted into the locking hole to lock the positioning member.

[0012] Preferably, the locking hole on one side of the mounting groove is a through hole, and the other side is a threaded hole;

[0013] Alternatively, the locking holes on both sides of the mounting groove may be threaded holes.

[0014] Preferably, the locking holes are provided at intervals.

[0015] Preferably, a plurality of positioning pins are provided, and the plurality of positioning pins are symmetrically arranged along both sides of the mounting groove.

[0016] Preferably, the length of the drive shaft that can enter one end of the limiting hole is less than the axial length of the limiting hole.

[0017] Preferably, the outer periphery of the nut is provided with a plurality of grooves, characterized in that the inner wall of the sleeve is provided with a plurality of protrusions along the circumferential direction, when the sleeve is sleeved on the outer periphery of the transmission shaft, the plurality of protrusions can be correspondingly engaged with the plurality of grooves, and when the sleeve rotates, the protrusions can drive the nut to rotate coaxially.

[0018] Preferably, the end of the sleeve away from the opening is provided with a disassembly groove, and a disassembly wrench can be engaged into the disassembly groove to disassemble or install the nut through the sleeve.

[0019] The beneficial effects of this utility model are:

[0020] This utility model discloses a drive shaft assembly fixture, specifically including a positioning component and a sleeve. The positioning component includes a positioning element and a positioning pin. The positioning element has a limiting hole along the axial direction, and one end of the drive shaft can be correspondingly engaged and confined within the limiting hole. The positioning pin is located on one side of the positioning element along the thickness direction, and the positioning pin can confine the positioning element to a preset position. One end of the sleeve has an opening and an internal receiving cavity. The end of the drive shaft away from the positioning element can pass through the opening and enter the receiving cavity. The sleeve can cooperate with the nut of the drive shaft so that when the sleeve rotates, the nut can rotate coaxially.

[0021] The drive shaft assembly fixture not only enables the quick installation and fixing of the drive shaft without damaging it, but also prevents damage to the nut during the adjustment of the nut preload, effectively improving the service life of the fixture. Attached Figure Description

[0022] Figure 1This is an exploded view of the drive shaft assembly fixture provided by this utility model;

[0023] Figure 2 This is an isometric view of the positioning component provided by this utility model;

[0024] Figure 3 This is an isometric view of the sleeve provided by this utility model;

[0025] Figure 4 This is an exploded view of the drive shaft provided by this utility model.

[0026] In the picture:

[0027] 10. Positioning assembly; 11. Positioning element; 111. Limiting hole; 112. Mounting groove; 113. Locking hole; 12. Positioning pin; 13. Locking element;

[0028] 20. Sleeve; 21. Opening; 22. Receiving cavity; 23. Protrusion; 24. Disassembly / assembly groove;

[0029] 100. Drive shaft; 110. Nut; 120. Groove; 130. Drive rod; 140. Bearing. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This embodiment provides a drive shaft assembly fixture for assembling the drive shaft 100. For example... Figures 1-4 As shown, the tooling includes a positioning assembly 10 and a sleeve 20. The positioning assembly 10 includes a positioning element 11 and a positioning pin 12. The positioning element 11 is provided with a limiting hole 111 along the axial direction. One end of the drive shaft 100 can be correspondingly engaged and limited in the limiting hole 111. The positioning pin 12 is provided on one side of the positioning element 11 along the thickness direction. The positioning pin 12 can limit the positioning element 11 to a preset position. One end of the sleeve 20 is provided with an opening 21 and an internal receiving cavity 22. The end of the drive shaft 100 away from the positioning element 11 can pass through the opening 21 and enter the receiving cavity 22. The sleeve 20 can cooperate with the nut 110 of the drive shaft 100 so that when the sleeve 20 rotates, the nut 110 can rotate coaxially.

[0035] When it is necessary to assemble the drive shaft 100, the positioning pin 12 can be installed in the preset position. Since the positioning pin 12 has a cylindrical structure, it is very easy to install. Then, the top end of the drive shaft 100 is inserted into the limiting hole 111. At this time, the drive shaft 100 is indirectly fixed through the positioning part 11, thus avoiding the situation of directly clamping the drive shaft 100 in the preset position, initially preventing damage to the drive shaft 100, and enabling quick installation and fixing. In addition, when it is necessary to tighten the nut 110 to the target preload, the sleeve 20 can be rotated directly. The sleeve 20 can drive the nut 110 to rotate coaxially, thus avoiding the situation where the rotational torque is directly applied to the nut 110, further ensuring the service life of the drive shaft 100, and enabling the nut 110 to be rotated to the preset position quickly.

[0036] It should be noted here that, as Figure 4 As shown, the drive shaft 100 includes a drive rod 130, on which multiple bearings 140 are sleeved. The outer circumference of the drive rod 130 is threaded. Finally, by screwing a nut 110 onto the threaded outer circumference, the bearings 140 are positioned. The preload is adjusted by changing the number of rotations of the nut 110. Therefore, considering the need for a stable connection between the sleeve 20 and the nut 110 to allow coaxial rotation of the nut 110 and sleeve 20, the preload of the nut 110 can be quickly adjusted. Therefore, as... Figure 1 As shown, the outer periphery of the nut 110 is provided with multiple grooves 120, and the inner wall of the sleeve 20 is provided with multiple protrusions 23 along the circumferential direction. When the sleeve 20 is sleeved on the outer periphery of the drive shaft 100, the multiple protrusions 23 can be correspondingly engaged with the multiple grooves 120. When the sleeve 20 rotates, the protrusions 23 can drive the nut 110 to rotate coaxially. In this structure, the multiple protrusions 23 can be simultaneously engaged with the multiple grooves 120 to ensure a stable connection. Therefore, when the sleeve 20 rotates, the nut 110 can be driven to rotate through the multiple protrusions 23, thereby enabling the nut 110 to rotate quickly. The rotational torque is directly applied to the sleeve 20, effectively preventing damage or scratches to the outer periphery of the nut 110, thus indirectly improving the service life of the drive shaft 100.

[0037] To further improve the clamping force, in this embodiment, the length of the drive shaft 100 that can enter one end of the limiting hole 111 is less than the axial length of the limiting hole 111. This arrangement increases the width of the drive shaft 100, ensuring a good clamping effect and providing sufficient clamping force; it also increases the force-bearing area of ​​the drive shaft 100, thereby reducing the pressure per unit area on the outer periphery of the drive shaft 100, effectively preventing damage to the drive shaft 100 during clamping. Furthermore, in other embodiments, the clamping force can also be increased by increasing the thickness of the positioning member 11 to ensure the clamping effect.

[0038] In addition, to make it easier to rotate the sleeve 20, such as Figure 3 As shown, the end of the sleeve 20 away from the opening 21 is provided with a disassembly groove 24. A disassembly wrench can be engaged into the disassembly groove 24 to disassemble or install the nut 110 through the sleeve 20. By providing the disassembly groove 24, it is easier to tighten or loosen the nut 110, thereby improving the convenience of assembly and enhancing the user experience.

[0039] Specifically, such as Figure 1 and Figure 2As shown, the positioning member 11 is annular, and a mounting groove 112 is formed radially thereon. The mounting groove 112 extends from at least one side of the annular wall to the limiting hole 111. Along the axial direction of the positioning member 11, the mounting groove 112 is a through groove. In this structure, since the annular positioning member 11 has a mounting groove 112, the diameter of the limiting hole 111 can be enlarged during the process of installing the drive shaft 100 into the limiting hole 111, thereby making the installation more convenient and faster.

[0040] It is worth noting that the diameter of the limiting hole 111 is the same as the diameter of the top end of the transmission rod 130, making it relatively difficult to install it into the limiting hole 111. Therefore, in this embodiment, the mounting groove 112 passes through the limiting hole 111 and extends to the other annular wall, but does not penetrate the other annular wall. This arrangement can increase the deformation of the limiting hole 111 during installation, thereby making the assembly process more convenient and labor-saving. At the same time, since the mounting groove 112 does not divide the positioning member 11 into two parts, the ease of use is further improved, eliminating the need for assembly.

[0041] Because of the installation slot 112, the limiting effect of the positioning component 11 may be reduced, potentially leading to the drive shaft 100 detaching during assembly. This technical problem remains unresolved. Figure 1 and Figure 2 As shown, the positioning member 11 is provided with a locking hole 113. The locking hole 113 is located on the annular wall of the positioning member 11 on the side through which the mounting groove 112 passes, and the locking hole 113 also passes through the annular walls on both sides of the mounting groove 112. The locking member 13 can pass through the locking hole 113 to lock the positioning member 11. After the drive shaft 100 is assembled into the limiting hole 111, the locking member 13 can simultaneously lock the annular walls on both sides of the mounting groove 112. This not only ensures the locking effect and effectively prevents the drive shaft 100 from falling out of the limiting hole 111, but also prevents the positioning member 11 from breaking during assembly, ensuring the clamping effect and service life.

[0042] In this embodiment, the locking hole 113 on one side of the mounting groove 112 is a through hole, and the other side is a threaded hole; the locking element 13 is a bolt. The bolt can pass precisely through the through hole and, after passing through the mounting groove 112, can form a threaded engagement with the threaded hole. This not only provides a good locking effect but also makes assembly and disassembly extremely convenient, improving the user experience. In other embodiments, the locking holes 113 on both sides of the mounting groove 112 are threaded holes. This arrangement further improves the bolt's locking effect, ensuring that the drive shaft 100 cannot fall out of the limiting hole 111 during assembly.

[0043] In addition, such as Figure 1 and Figure 2As shown, multiple locking holes 113 are spaced apart. This arrangement further improves the locking effect and ensures sufficient clamping force. Simultaneously, since the top end of the drive shaft 100 is located within the limiting hole 111, the contact area is large, and the pressure per unit area is small. Therefore, the drive shaft 100 will not be damaged during clamping, thus improving its service life.

[0044] To ensure stability during the assembly process, such as Figure 1 and Figure 2 As shown, multiple positioning pins 12 are provided, and the multiple positioning pins 12 are symmetrically arranged along both sides of the mounting groove 112. The multiple positioning pins 12 can firmly fix the positioning component 11 in the preset position. The symmetrical distribution of the multiple positioning pins 12 along both sides of the mounting groove 112 can ensure that the force on both sides is uniform, thereby avoiding fatigue fracture due to excessive force on one side, and effectively improving the service life of the positioning component 11.

[0045] In summary, the drive shaft assembly fixture in this embodiment can not only quickly install and fix the drive shaft 100 without damaging it, but also will not damage the nut 110 during the adjustment of the preload force, effectively improving the service life of the fixture.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A propeller shaft assembly tool for assembling a propeller shaft (100), characterized in that, include: The positioning component (10) includes a positioning element (11) and a positioning pin (12). The positioning element (11) is provided with a limiting hole (111) along the axial direction. One end of the transmission shaft (100) can be correspondingly engaged and limited in the limiting hole (111). The positioning pin (12) is provided on one side of the positioning element (11) along the thickness direction. The positioning pin (12) can limit the positioning element (11) to a preset position. The sleeve (20) has an opening (21) at one end and a receiving cavity (22) inside. The end of the drive shaft (100) away from the positioning member (11) can pass through the opening (21) and enter the receiving cavity (22). The sleeve (20) can cooperate with the nut (110) of the drive shaft (100) so that when the sleeve (20) rotates, the nut (110) can rotate coaxially.

2. The drive shaft assembly fixture according to claim 1, characterized in that, The positioning element (11) is annular and has a mounting groove (112) along its radial direction. The mounting groove (112) extends from at least one side of the annular wall to the limiting hole (111). Along the axial direction of the positioning element (11), the mounting groove (112) is a through groove.

3. The drive shaft assembly fixture according to claim 2, characterized in that, The mounting groove (112) passes through the limiting hole (111) and extends to the other side of the annular wall, but does not penetrate the other side of the annular wall.

4. The drive shaft assembly fixture according to claim 3, characterized in that, The positioning member (11) is also provided with a locking hole (113). The locking hole (113) is located on the annular wall of the positioning member (11) on the side through which the mounting groove (112) passes. The locking hole (113) passes through the annular walls on both sides of the mounting groove (112). The locking member (13) can be inserted into the locking hole (113) to lock the positioning member (11).

5. The drive shaft assembly fixture according to claim 4, characterized in that, The locking hole (113) located on one side of the mounting groove (112) is a through hole, and the other side is a threaded hole; Alternatively, the locking holes (113) on both sides of the mounting groove (112) may be threaded holes.

6. The drive shaft assembly fixture according to claim 4, characterized in that, The locking holes (113) are provided at intervals.

7. The drive shaft assembly fixture according to claim 2, characterized in that, Multiple positioning pins (12) are provided, and the multiple positioning pins (12) are symmetrically arranged on both sides of the mounting groove (112).

8. The drive shaft assembly fixture according to any one of claims 1-7, characterized in that, The length of the drive shaft (100) that can enter one end of the limiting hole (111) is less than the axial length of the limiting hole (111).

9. The drive shaft assembly fixture according to any one of claims 1-7, characterized in that, The nut (110) has a plurality of grooves (120) on its outer periphery, and the sleeve (20) has a plurality of protrusions (23) on its inner wall along the circumferential direction. When the sleeve (20) is fitted onto the outer periphery of the drive shaft (100), the plurality of protrusions (23) can be correspondingly engaged into the plurality of grooves (120). When the sleeve (20) rotates, the protrusions (23) can drive the nut (110) to rotate coaxially.

10. The drive shaft assembly fixture according to any one of claims 1-7, characterized in that, The sleeve (20) has a disassembly groove (24) at the end away from the opening (21). A disassembly wrench can be engaged in the disassembly groove (24) to disassemble or install the nut (110) through the sleeve (20).

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