A center pin dismounting tool

Abstract

The utility model discloses a center pin dismounting frock, center pin dismounting frock includes: frock base and dismounting subassembly, the center of frock base is provided with first connecting hole, and the dismounting subassembly is movably installed on the frock base based on first connecting hole, the dismounting subassembly includes: first bolt and clamping block, first bolt passes first connecting hole, and the fixed end of first bolt is connected with clamping block, and clamping block is driven along the working direction of bolt and moves, still be provided with a plurality of second connecting holes on the frock base, and a plurality of second connecting holes are distributed around the circumference of first connecting hole, and the corresponding connecting assembly is inserted in each second connecting hole. The utility model sets up dismounting subassembly and connecting assembly, and both respectively output jacking force and tension, form a trend of up top and down pull to center pin to realize the separation work of center pin.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to a center pin disassembly tool. Background Technology

[0002] During the manufacturing process of D-type chassis vehicles in urban areas, separating the center pin from the traction device cannot be achieved using simple tools without specialized equipment. Separating the center pin from the traction device often involves overcoming a significant frictional force between the center pin and the inner wall of the traction device, as well as its own clamping force.

[0003] Traditional manual disassembly methods, such as using simple pry bars and hammers, are not only difficult to operate and require a lot of manpower and time, but also make it hard to accurately control the direction and magnitude of the force applied, which can easily cause secondary damage to the center pin and surrounding components, affecting the overall performance and service life of the equipment. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art. This utility model provides a center pin disassembly tool. By setting a disassembly component and a connecting component, the two respectively output lifting force and pulling force, forming an upward lifting and downward pulling trend on the center pin, thereby realizing the separation of the center pin.

[0005] Accordingly, this utility model proposes a center pin disassembly fixture, which includes: a fixture base and a disassembly assembly; The tooling base has a first connecting hole at its center, and the disassembly assembly is movably mounted on the tooling base based on the first connecting hole; The disassembly assembly includes: a first bolt and a clamping block, wherein the first bolt passes through the first connecting hole, the fixed end of the first bolt is connected to the clamping block, and the clamping block is driven by the first bolt to move along the working direction of the bolt; The tooling base is also provided with a plurality of second connecting holes, which are distributed around the first connecting hole in a circle, and each second connecting hole is provided with a corresponding connecting component, one end of any of the connecting components abutting against the bottom of the tooling base.

[0006] Preferably, a limiting boss is provided in the first connecting hole, and the center of the limiting boss is provided with a threaded channel.

[0007] Preferably, the included angle formed between two adjacent second connecting holes is the same.

[0008] Preferably, the bottom of the clamping block is provided with a connecting part, and the connecting part has a third connecting hole that mates with the fixed end.

[0009] Preferably, a first groove is provided in the third connecting hole, and the first groove is distributed along the hole wall of the third connecting hole.

[0010] Preferably, a limiting frustum is provided in the first groove, and the surface of the limiting frustum abuts against the first groove.

[0011] Preferably, the limiting frustum is provided with a fourth connecting hole, and the fixing end of the first bolt is inserted into the fourth connecting hole.

[0012] Preferably, the clamping block is provided with a plurality of second grooves, which are distributed symmetrically about the center of the clamping block.

[0013] Preferably, the connecting component is a second bolt; Furthermore, the head of the second bolt abuts against the bottom of the tooling base.

[0014] Preferably, the length of the second bolt is D1, and the thread on the second bolt occupies 3 / 4 of the length of the second bolt.

[0015] This utility model Beneficial effects: This invention utilizes a disassembly assembly in the center pin disassembly fixture to create an upward lifting force on the center pin. Specifically, when the first bolt moves along the working direction, it outputs a lifting force to the clamping block, which then transmits this force to the center pin, causing it to disengage from the corresponding traction device, thus achieving center pin separation. Furthermore, this invention also includes multiple connecting assemblies on the fixture base. These assemblies abut against the fixture base, meaning that when the first bolt outputs a lifting force to the center pin, the connecting assemblies output a pulling force to the corresponding traction device. The disassembly assembly and the connecting assemblies work together to create an upward lifting and downward pulling force, allowing the center pin to separate from the traction device more quickly, thereby improving the efficiency of center pin disassembly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the center pin disassembly fixture in this utility model; Figure 2 This is a cross-sectional view of the center pin disassembly fixture in this utility model; Figure 3 yes Figure 2Enlarged view of point A in the image; Figure 4 This is a structural schematic diagram of the tooling base in this utility model.

[0018] In the attached diagram: 1. Tooling base; 11. First connecting hole; 111. Limiting boss; 1111. Channel; 12. Second connecting hole; 2. Disassembly assembly; 21. First bolt; 22. Clamping block; 221. Connecting part; 2211. Third connecting hole; 2212. First groove; 2213. Limiting frustum; 2214. Fourth connecting hole; 222. Second groove; 3. Connecting assembly. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Figure 1 This invention provides a schematic diagram of the structure of the center pin disassembly fixture. Figure 2 A cross-sectional view of the center pin disassembly fixture of this invention is shown. Figure 3 It shows Figure 2 Enlarged view of point A in the image. Figure 4A schematic diagram of the tooling base of this utility model is shown. The center pin disassembly tooling includes: a tooling base 1 and a disassembly component 2; the tooling base 1 has a first connecting hole 11 at its center, and the disassembly component 2 is movably mounted on the tooling base 1 based on the first connecting hole 11; the disassembly component 2 includes: a first bolt 21 and a clamping block 22, the first bolt 21 passing through the first connecting hole 11, the fixed end of the first bolt 21 being connected to the clamping block 22, and the clamping block 22 moving along the working direction of the first bolt 21 driven by the first bolt 21; the tooling base 1 also has a plurality of second connecting holes 12, which are circumferentially distributed around the first connecting hole 11, and each second connecting hole 12 is fitted with a corresponding connecting component 3, one end of any connecting component 3 abutting against the bottom of the tooling base 1. In this embodiment, the disassembly component 2 passes through the first connecting hole 11, and the first connecting hole 11 is provided with a thread that mates with the first bolt 21, so that the first bolt 21 is threadedly connected to the first connecting hole 11. The tooling base 1 is provided with six second connecting holes 12, which are distributed circumferentially around the first connecting hole 11. A connecting component 3 is inserted into one of the second connecting holes 12. One end of the connecting component 3 abuts against the tooling base 1, and the other end of the connecting component 3 is connected to the corresponding traction device. When the first bolt 21 rotates and moves along the working direction of the first bolt 21, the fixed end of the first bolt 21 outputs a lifting force to the clamping block 22, and the clamping block 22 transmits the lifting force to the center pin, causing the center pin to tend to disengage from the corresponding traction device. This allows for the separation of the center pin. During this process, the lifting force exerted by the first bolt 21 on the center pin is greater than the reaction force provided by the center pin, thus tending to move the entire tooling base 1. However, the multiple connecting components 3 fix the distance between the tooling base 1 and the traction device. The multiple connecting components 3 simultaneously output pulling force, keeping the traction device at its original distance from the tooling base 1. This counteracts the force exerted by the first bolt 21 on the tooling base 1 and instead outputs pulling force on the traction device, creating an upward and downward pulling trend. This allows the center pin to separate from the traction device more quickly, which is beneficial for improving the efficiency of disassembling the center pin.

[0021] Furthermore, a limiting boss 111 is provided within the first connecting hole 11. The limiting boss 111 has a threaded channel 1111 at its center. The limiting boss 111 restricts the movement range of the first bolt 21, and the thread in the channel 1111 matches the thread of the first bolt 21. Due to the presence of the limiting boss 111, when the first bolt 21 is screwed in to a certain depth, the end face of the limiting boss 111 will contact the head of the first bolt 21, thereby restricting further movement of the first bolt 21 and ensuring that the first bolt 21 moves within a suitable range. This, in turn, pushes the disassembly center pin, ensuring a reliable connection between the tooling base 1 and the first bolt 21, and reducing the risk of damage caused by excessive screwing in of the first bolt 21.

[0022] Furthermore, the included angle formed between two adjacent second connecting holes 12 is the same. In this embodiment, the tooling base 1 is provided with six second connecting holes 12, that is, the included angle formed between two adjacent second connecting holes 12 is 60°. The evenly distributed structure of the second connecting holes 12 can ensure that the constraint force and positioning accuracy of the tooling base 1 in all directions are consistent when connecting the workpiece. That is, when the six connecting components 3 are respectively inserted into the six second connecting holes 12, the ends of the six connecting components 3 are connected to the corresponding traction devices, and the heads of the six connecting components 3 abut against the bottom of the tooling base 1. When the first bolt is rotated... At 21 o'clock, the first bolt 21 applies a lifting force to the clamping block 22, and then applies a lifting force to the center pin. At the same time, the six connecting components 3 apply a pulling force in the opposite direction to the lifting force. The six connecting components 3 apply forces from six directions simultaneously, so that the force acting on the traction device is evenly distributed. This avoids deviations in the magnitude and direction of the pulling force during the application of the pulling force, which could cause the center pin to get stuck with the traction device. It also helps to apply precise pulling force control by the six connecting components 3, ensuring that the center pin can move smoothly and steadily within the traction device, and reducing the phenomenon of the center pin getting stuck during the disassembly of the center pin.

[0023] Furthermore, the bottom of the clamping block 22 is provided with a connecting portion 221, which has a third connecting hole 2211 that mates with the fixed end. In this embodiment, the connecting portion 221 is used to connect the fixed end of the first bolt 21, and the fixed end of the first bolt 21 is inserted into the third connecting hole 2211. This prevents the end face of the first bolt 21 from abutting against the bottom of the tooling base 1 during rotation, and prevents the fixed end of the first bolt 21 from moving irregularly along the bottom of the clamping block 22. This would cause the force transmitted from the first bolt 21 to the clamping block 22 to be biased, and the clamping block 22 would not be able to flatly fit the center pin and transmit the lifting force evenly to the center pin, resulting in the inability to smoothly disassemble the center pin. This embodiment facilitates the flat fitting of the clamping block 22 to the center pin and the transmission of the lifting force evenly to the center pin, allowing the center pin to be smoothly disassembled from the traction device.

[0024] Furthermore, a first groove 2212 is provided within the third connecting hole 2211, and the first groove 2212 is distributed along the hole wall of the third connecting hole 2211. In this embodiment, the first groove 2212 is located at one end of the third connecting hole 2211 near the clamping block 22. The first groove 2212 is used to restrict one end of the first bolt 21, ensuring that one end of the first bolt 21 is stuck in the first connecting hole 11, preventing the first bolt 21 from disengaging from the clamping block 22, which would prevent the lifting force from being output to the clamping block 22 in a timely manner. This helps the first bolt 21 maintain its connection with the clamping block 22, enabling the first bolt 21 to continuously output lifting force and ensuring the stability of the disassembly fixture.

[0025] Furthermore, a limiting frustum 2213 is provided in the first groove 2212. The limiting frustum 2213 is inserted into the first groove 2212, and one end face of the limiting frustum 2213 abuts against one side wall of the first groove 2212. In this embodiment, the lower end face of the limiting frustum 2213 abuts against the side wall of the first groove 2212 near the lower end face, or the upper end face of the limiting frustum 2213 abuts against the side wall of the first groove 2212 near the upper end face. Only one end face of the limiting frustum 2213 abuts against the first groove 2212, ensuring that there is a gap between the limiting frustum 2213 and the first groove 2212. This allows the limiting frustum 2213 to rotate smoothly within the first groove 2212 under the drive of the first bolt 21, reducing friction between the limiting frustum 2213 and the first groove 2212, reducing wear between the first limiting frustum 2213 and the first groove 2212, and enhancing the service life of the limiting frustum 2213.

[0026] Furthermore, the limiting frustum 2213 is provided with a fourth connecting hole 2214, and the fixing end of the first bolt 21 is inserted into the fourth connecting hole 2214. In this embodiment, the fourth connecting hole 2214 is provided with a thread that mates with the first bolt 21, so that the first bolt 21 is threadedly connected to the limiting frustum 2213. Since the limiting frustum 2213 can rotate freely within the first groove 2212, when the first bolt 21 rotates in the forward direction, it drives the limiting frustum 2213 to rotate. Moreover, when the first bolt 21 rotates in the forward direction, it moves along the thread in the fourth connecting hole 2214, causing the first bolt 21 to rotate in the direction of locking with the limiting frustum 2213. This avoids the risk of the first bolt 21 disengaging from the limiting frustum 2213 during use, helps maintain the connection between the first bolt 21 and the limiting frustum 2213, and enhances the stability of the center pin disassembly fixture.

[0027] It should be noted that lubricating oil is provided between the limiting frustum 2213 and the first groove 2212 to reduce the friction between the limiting frustum 2213 and the first groove 2212, and to prevent the first bolt 21 from rotating in the opposite direction. When the clamping block 22 moves away from the central pin, the first bolt 21 disengages from the limiting frustum 2213, ensuring that the friction between the first bolt 21 and the limiting frustum 2213 is greater than the friction between the limiting frustum 2213 and the first groove 2212. The rotation of the first bolt 21 drives the limiting frustum 2213 to rotate, keeping the first bolt 21 and the limiting frustum 2213 relatively stationary, which can drive the entire clamping block 22 to move.

[0028] Furthermore, the clamping block 22 is provided with a plurality of second grooves 222, which are symmetrically distributed around the center of the clamping block 22. In this embodiment, the clamping block 22 is provided with two second grooves 222, which are symmetrically distributed around the center of the clamping block 22. The two second grooves 222 cooperate with the designated positions of the corresponding traction device. That is, when the clamping block 22 is in contact with the traction device and the center pin needs to be disassembled, the two second grooves 222 engage with the two positioning posts provided on the traction device, ensuring that the clamping block 22 can move along the direction of the positioning posts. This avoids tilting of the clamping block 22 during movement, which would cause the lifting force output by the clamping block 22 to deviate from the direction of the jacking force, resulting in the center pin not being able to move smoothly from the traction device. This helps to reduce the phenomenon of the center pin getting stuck during the disassembly of the center pin.

[0029] Furthermore, the connecting component 3 is a second bolt; the head of the second bolt abuts against the bottom of the tooling base 1. In this embodiment, the head of the second bolt abuts against the bottom of the tooling base 1, while the end of the second bolt is threadedly connected to a hole on the corresponding traction device, thereby maintaining the distance between the tooling base 1 and the traction device. When the first bolt 21 rotates, it pushes the clamping block 22, causing the clamping block 22 to transmit a lifting force to the center pin. During this process, in order to ensure that only the center pin moves after being subjected to the lifting force, the traction device and the tooling base 1 need to maintain their positions. That is, the tooling base 1 applies a pulling force to the traction device through the second bolt, and the head of the second bolt abuts against the bottom of the tooling base 1. The head of the second bolt applies a force to the tooling base, thereby ensuring that the traction device simultaneously applies the pulling force of the second bolt, so that the traction device and the tooling base 1 maintain their original distance. During this process, the center pin is subjected to a lifting force, and the traction device applies a pulling force in the opposite direction to the lifting force, outputting force from both directions simultaneously, reducing the difficulty of separating the center pin from the corresponding traction device, and improving the efficiency of disassembling the center pin.

[0030] It should be noted that each of the second connecting holes 12 is provided with a connecting thread, and the second connecting hole 12 is connected to the connecting assembly based on the connecting thread.

[0031] Furthermore, the length of the second bolt is D1, and the thread on the second bolt occupies 3 / 4 of the length of the second bolt. In this embodiment, the thread of the second bolt occupies 3 / 4 of the length of the second bolt, and the remaining 1 / 4 is a smooth surface. The thread on the second bolt is distributed from the end of the second bolt towards the head of the second bolt. That is, the part of the second bolt near its head is a smooth surface, and the part near its end is a stud. This unique thread distribution design allows the bolt to better distribute stress during traction, improving the stability and reliability of the connection. At the same time, the smooth surface portion can reduce the friction between the second bolt and the tooling base 1, reduce wear, and extend the service life of the second bolt.

[0032] It should be noted that the center pin disassembly fixture is made of metal. Specifically, it is made of aluminum alloy. The low density of aluminum alloy results in a low weight for the fixture, ensuring it weighs less than 10 kg. This facilitates handling and reduces processing costs. Furthermore, aluminum alloy possesses good hardness, ensuring the fixture's rigidity and preventing excessive stress during use that could break the connection between the fixture and the traction device (part 221). This extends the fixture's service life.

[0033] In summary, this utility model, by setting up a disassembly component in the center pin disassembly fixture, creates an upward lifting trend for the center pin. That is, when the first bolt moves along the working direction, the first bolt outputs a lifting force to the clamping block, which then transmits this lifting force to the center pin, causing the center pin to disengage from the corresponding traction device, thereby achieving the separation of the center pin. This utility model also sets up multiple connecting components on the fixture base, which abut against the fixture base. That is, when the first bolt outputs a lifting force to the center pin, the multiple connecting components output a pulling force to the corresponding traction device. The disassembly component and the connecting components work together to create an upward lifting and downward pulling trend, simplifying the structure for disassembling the center pin.

[0034] Furthermore, the above description provides a detailed explanation of the center pin disassembly fixture provided in the embodiments of this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A center pin disassembly tool, characterized in that, The center pin disassembly fixture includes: a fixture base and a disassembly assembly; The tooling base has a first connecting hole at its center, and the disassembly assembly is movably mounted on the tooling base based on the first connecting hole; The disassembly assembly includes: a first bolt and a clamping block, wherein the first bolt passes through the first connecting hole, the fixed end of the first bolt is connected to the clamping block, and the clamping block is driven by the first bolt to move along the working direction of the bolt; The tooling base is also provided with a plurality of second connecting holes, which are distributed around the first connecting hole in a circle, and each second connecting hole is provided with a corresponding connecting component, one end of any of the connecting components abutting against the bottom of the tooling base.

2. The center pin disassembly fixture according to claim 1, characterized in that, A limiting boss is provided in the first connecting hole, and a threaded channel is provided at the center of the limiting boss.

3. The center pin disassembly fixture according to claim 1, characterized in that, The included angle between two adjacent second connecting holes is the same.

4. The center pin disassembly fixture according to claim 1, characterized in that, The bottom of the clamping block is provided with a connecting part, and the connecting part has a third connecting hole that mates with the fixed end.

5. A center pin disassembly fixture according to claim 4, characterized in that, A first groove is provided inside the third connecting hole, and the first groove is distributed along the hole wall of the third connecting hole.

6. A center pin disassembly fixture according to claim 5, characterized in that, A limiting frustum is provided in the first groove, and the surface of the limiting frustum abuts against the first groove.

7. A center pin disassembly fixture according to claim 6, characterized in that, The limiting frustum is provided with a fourth connecting hole, and the fixing end of the first bolt is inserted into the fourth connecting hole.

8. A center pin disassembly fixture according to claim 1, characterized in that, The clamping block is provided with a plurality of second grooves, which are distributed symmetrically about the center of the clamping block.

9. A center pin disassembly fixture according to claim 1, characterized in that, The connecting component is the second bolt; The head of the second bolt abuts against the bottom of the tooling base.

10. A center pin disassembly fixture according to claim 9, characterized in that, The length of the second bolt is D1, and the thread on the second bolt occupies 3 / 4 of the length of the second bolt.

Images