Pin dismounting device
By designing a pin disassembly device based on the lever principle, the problems of pin deformation and operation caused by traditional pin disassembly methods are solved, achieving efficient, safe, and universal pin disassembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional methods of disassembling pins can easily lead to pin deformation or damage to parts, and it is difficult to operate pins in special positions, resulting in low efficiency and wasting manpower and time.
Design a pin removal device that uses the lever principle. Through a guide component and a lever removal component, the pin can be quickly removed using a removal rod and a removal head. It is equipped with a replaceable removal head to accommodate pins of different types and sizes.
It improves disassembly efficiency, ensures the integrity of pins and related parts, is easy to operate, reduces labor intensity, and has strong versatility.
Smart Images

Figure CN224073774U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to mechanical tools, specifically a pin removal device. Background Technology
[0002] In the installation, repair, and maintenance of mechanical equipment, it is often necessary to remove pins. Traditional methods for removing pins typically involve hammering, prying with a crowbar, or using pliers. These methods have many drawbacks. On the one hand, hammering can easily deform or damage the pin, and may even damage the components it connects to. On the other hand, for some pins with special installation locations that are difficult to operate directly, traditional methods are difficult to use, inefficient, and consume a lot of manpower and time. Therefore, designing a dedicated pin removal device to solve the problems existing in the current technology is of significant practical importance. Utility Model Content
[0003] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a pin disassembly device, including a base, a guide component at one end of the base, and a lever disassembly component at the other end. A disassembly rod is inserted through the guide component. One end of the disassembly rod is movably connected to the lever disassembly component, and the other end is provided with a disassembly head connected to the pin. By applying force to the end of the disassembly rod through the lever disassembly component, the disassembly rod slides within the guide component, thereby disassembling the pin.
[0004] Furthermore, the guide assembly includes a guide sleeve, with both ends of the guide sleeve connected to the base via guide brackets, and the disassembly rod passing through the guide sleeve.
[0005] Furthermore, one end of the disassembly rod is provided with a connector for connecting to the lever disassembly assembly. The connector is rotatably connected to the end of the lever disassembly assembly via a rotating shaft. The other end of the disassembly rod is detachably connected to a disassembly head via a thread. The disassembly head is provided with a locking hole corresponding to the pin. A locking rod that passes through the locking hole and the pin is detachably connected inside the locking hole.
[0006] Furthermore, the lever disassembly assembly includes a lever arm one rotatably connected to the end connector of the disassembly rod, the other end of the lever arm one rotatably connected to the middle of a lever arm two, a force application handle rotatably connected to the top of the lever arm two, and a lever bracket rotatably connected to the bottom.
[0007] Furthermore, the first lever arm is rotatably connected to the second lever arm via the second pivot shaft, and the second lever arm is rotatably connected to the force-applying handle via the third pivot shaft and to the lever bracket via the fourth pivot shaft.
[0008] Furthermore, at the connection between the second lever arm and the force-applying handle, a handle limiting stop is provided on the side near the lever bracket.
[0009] Furthermore, the second lever arm is provided with a plurality of connection holes that are hinged to the first lever arm.
[0010] Furthermore, the force-applying handle is provided with multiple connection holes 2 that are hinged to the lever arm 2.
[0011] The advantages of this utility model compared with the prior art are as follows:
[0012] (1) Improve disassembly efficiency: Through the lever principle, the pin can be quickly pulled out of the component, which greatly improves work efficiency compared with the traditional manual disassembly method.
[0013] (2) Ensure disassembly quality: The use of a special disassembly head and stable fixing components can avoid damage to the pins and related parts during the disassembly process, thus ensuring the quality of disassembly.
[0014] (3) Easy to operate: The device has a simple structure and is easy to operate. Operators only need to use the downward gravity of the lever to disassemble the pin, which reduces labor intensity.
[0015] (4) High versatility: The replaceable disassembly head design allows it to adapt to the disassembly requirements of different types and sizes of pins, and has strong versatility. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a pin disassembly device according to this utility model.
[0017] Figure 2 This is a structural diagram of a pin disassembly device in its disassembled state according to this utility model.
[0018] Figure 3 This is a schematic diagram of the second lever arm in a pin disassembly device according to this utility model.
[0019] Figure 4 This is a structural diagram of the pin disassembly device of this utility model in use. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0022] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0023] In the description of the embodiments of this utility model, "a plurality of" means at least two.
[0024] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] Example:
[0026] Combined with appendix Figure 1-4 This embodiment discloses a pin disassembly device, including a base 1. A guide component 2 is provided at one end of the base 1, and a lever disassembly component 3 is provided at the other end. A disassembly rod 4 is inserted inside the guide component 2. One end of the disassembly rod 4 is movably connected to the lever disassembly component 3, and the other end is provided with a disassembly head 6 connected to the pin 5. By applying force to the end of the disassembly rod 4 through the lever disassembly component 3, the disassembly rod 4 slides inside the guide component 2, thereby driving the pin 5 to be disassembled.
[0027] The guide assembly 2 includes a guide sleeve 201, with both ends of the guide sleeve 201 connected to the base 1 via guide brackets 202. The disassembly rod 4 passes through the guide sleeve 201. One end of the disassembly rod 4 is provided with a connector 401 that connects to the lever disassembly assembly 3. The connector 401 is rotatably connected to the end of the lever disassembly assembly 3 via a pivot 402. The other end of the disassembly rod 4 is detachably connected to a disassembly head 6 via a thread. The disassembly head 6 is provided with a locking hole 601 corresponding to the pin 5. A locking rod 602 that passes through the locking hole 601 and the pin 5 is detachably connected to the locking hole 601. The lever disassembly assembly 3 includes a lever arm 301 that is rotatably connected to the connector 401 at the end of the disassembly rod 4. The other end of the lever arm 301 is rotatably connected to the middle of a lever arm 302. The top of the lever arm 302 is rotatably connected to a force application handle 303, and the bottom is rotatably connected to a lever bracket 304.
[0028] Lever arm 1 301 is rotatably connected to lever arm 2 302 via pivot 2 305. Lever arm 2 302 is rotatably connected to force application handle 303 via pivot 3 306 and to lever support 304 via pivot 4 307. At the connection between lever arm 2 302 and force application handle 303, a handle limit stop bar 308 is provided on the side near lever support 304. Lever arm 2 302 is provided with multiple connection holes 1 309 that are hinged to lever arm 1 301. Force application handle 303 is provided with multiple connection holes 2 310 that are hinged to lever arm 2 302.
[0029] In use, various replaceable disassembly heads are designed according to different types and sizes of pins, such as straight rod type, bent rod type, fork type, etc. Only one form is shown in the attached drawings of this application. In actual use, it can be replaced as long as it can fix the pin. During operation, the pin is fixed to the disassembly head, and the force application handle is pressed down, so that the force application handle drives the second power arm to rotate, which in turn drives the first power arm to rotate. Finally, the pin is pulled outward by the lateral movement of the disassembly rod, thus achieving easy and efficient disassembly of the pin. At the same time, the multiple connection holes 1 on the second power arm and the multiple connection holes 2 on the force application handle can be connected at different positions to change the length of the lever link and the position of the connection point, thereby adjusting the magnitude of the force to adapt to the force and direction of movement required when disassembling the pin.
[0030] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A pin extractor apparatus characterized by, The utility model provides a kind of lever dismounting device, including base, the base one end is provided with guide component, the other end is provided with lever dismounting component, the guide component is worn with dismounting rod, the dismounting rod one end is movably connected with lever dismounting component, the other end is provided with the dismounting head connected with pin, by lever dismounting component to the end of dismounting rod exert force, make dismounting rod slide in guide component, in turn drive pin dismounting.
2. A pin extractor device as defined in claim 1, wherein The guide component includes a guide sleeve, which is connected to the base by guide supports at both ends.
3. A pin extractor device as defined in claim 2, wherein, The dismounting rod is provided with a connecting head at one end, which is connected to the lever dismounting component. The connecting head is rotatably connected to the end of the lever dismounting component by a pivot. The other end of the dismounting rod is detachably connected to a dismounting head by a thread. The dismounting head is provided with a locking hole corresponding to the pin. A locking rod is detachably connected to the locking hole and the pin.
4. A pin extractor device as defined in claim 3, wherein, The lever dismounting component includes a force arm one rotatably connected to the end connecting head of the dismounting rod. The other end of the force arm one is rotatably connected to the middle of a force arm two. The top of the force arm two is rotatably connected to a force handle, and the bottom is rotatably connected to a lever support.
5. A pin extractor device as defined in claim 4, wherein, The force arm one is rotatably connected to the force arm two by a pivot two. The force arm two is rotatably connected to the force handle by a pivot three and to the lever support by a pivot four.
6. A pin extractor device as defined in claim 5, wherein, The connection between the force arm two and the force handle is provided with a handle limiting stop bar on the side close to the lever support.
7. A pin extractor device as defined in claim 6, wherein, The force arm two is provided with a plurality of connecting holes one hinged to the force arm one.
8. A pin extractor device as defined in claim 6, wherein, The force handle is provided with a plurality of connecting holes two hinged to the force arm two.