A dismounting tool for a dowel pin

Abstract

The utility model belongs to the technical field of dismounting tool, especially suitable for a dismounting tool of pin fixing pin. The dismounting tool of pin fixing pin is divided into the clamping portion, main part and hand pulling portion that are connected in turn from the proximal end to the distal end, wherein the clamping portion is the clamping structure for being set on the outer wall of pin or fixing pin, and the thickness of the clamping structure is less than or equal to 20 mm. Compared with the prior art, the thickness of the clamping structure in the dismounting tool is less than 20 mm, which can be applied to the narrow gap where the forceps cannot be inserted. Meanwhile, the dismounting tool has simple structure and low manufacturing cost, and the operation can be completed by one hand, which is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of disassembly tool technology, and in particular relates to a disassembly tool suitable for pin fixing pins. Background Technology

[0002] In modern industry, efficient operation and maintenance of machinery and equipment plays a decisive role in production efficiency and cost control. Pins and fixing pins, as widely used standard connecting parts in machinery and equipment, undertake key functions such as positioning and connection. The efficiency and safety of their disassembly operations directly affect equipment downtime and maintenance costs.

[0003] Traditional pliers, as a commonly used disassembly tool, exhibit significant limitations in complex working conditions. Constrained by the thickness of their jaws, the length of their handles, and their opening and closing mechanism, conventional pliers struggle to enter narrow spaces with gaps less than 20mm. In equipment with compact internal structures, pins and retaining pins are often located in areas where components are densely intersecting. Even if conventional pliers manage to penetrate, insufficient operating space prevents effective gripping, hindering disassembly. Some maintenance personnel are forced to attempt multiple attempts and repeatedly adjust angles, which not only consumes considerable time but also risks damaging surrounding components due to improper operation, further increasing maintenance costs and technical risks.

[0004] Based on this, the present invention provides a novel disassembly tool for column pin fixing pins to overcome the above-mentioned defects. Utility Model Content

[0005] One objective of this utility model is to provide a tool for disassembling a pin fixing pin. The thickness of the snap-fit ​​structure in this tool is less than 20mm, which can be used in narrow gaps where pliers cannot reach. At the same time, the tool has a simple structure, low manufacturing cost, and can be operated with one hand, making it convenient to use.

[0006] The present invention adopts the following technical solution: a tool for disassembling a pin fixing pin, wherein the tool for disassembling a pin fixing pin is divided into a snap-fit ​​part, a main body part and a pull part connected sequentially from the proximal end to the distal end; The snap-fit ​​part is a snap-fit ​​structure for fitting onto the outer wall of the pin or fixing pin, and the thickness of the snap-fit ​​structure is ≤20mm.

[0007] Furthermore, the snap-fit ​​portion is detachably connected to the main body portion.

[0008] Furthermore, the snap-fit ​​structure is C-shaped hook-like.

[0009] Furthermore, the outer wall of the snap-fit ​​structure is formed with a first anti-slip texture.

[0010] Furthermore, the pull part includes a pull ring body, and the outer wall of the pull ring body is formed with a second anti-slip texture.

[0011] Furthermore, the main body includes a thick rod and a first thin rod and a second thin rod disposed at both ends of the thick rod; one end of the first thin rod is fixedly connected to the thick rod, and the other end is fixedly connected to the snap-fit ​​structure; one end of the second thin rod is fixedly connected to the thick rod, and the other end is fixedly connected to the pull part.

[0012] Furthermore, the thick rod, the first thin rod, and the second thin rod are welded together. The second thin rod and the pull part are welded together.

[0013] Furthermore, a connecting plate is provided at the connection between the second thin rod and the pull part, and the connecting plate is perpendicular to the axial direction of the second thin rod.

[0014] Furthermore, the thick rod is a rod-shaped structure with adjustable length.

[0015] Furthermore, the thick rod, the first thin rod, and the second thin rod are all made of round steel.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a tool for disassembling pins and fixing pins. In use, the locking part is first tilted and hooked onto the outer wall of the pin or fixing pin to generate an initial clamping force. Then, an axial pulling force is applied by the pull part, causing the locking part to move the pin or fixing pin outwards until the pin falls out of the mounting hole.

[0017] The disassembly tool for pin fixing provided by this utility model has a locking structure thickness controlled within 20mm, effectively overcoming the limitations of traditional disassembly tools in terms of spatial applicability. In actual engineering applications, the pins or fixing pins of many mechanical devices are often installed in narrow gaps, which traditional disassembly tools such as pliers cannot reach due to their excessive size. However, this disassembly tool, with its thin locking structure, can accurately reach into such narrow spaces, tilting the locking part to hook onto the outer wall of the pin or fixing pin, thereby achieving effective disassembly and greatly expanding the application scenarios of disassembly tools. Meanwhile, the disassembly tool adopts a simple three-section design, namely the sequentially connected snap-fit ​​part, the main body part, and the pull part. The structure is simple and easy to mass-produce, which can meet the market demand for pin fixing pin disassembly tools at a lower cost. Furthermore, the operator only needs to hold the pull handle with one hand to complete the entire process of locating, hooking, and pulling off the locking mechanism. This one-handed operation not only simplifies the process and improves disassembly efficiency, but also allows operators to complete disassembly tasks flexibly and conveniently even in space-constrained work environments, further enhancing the tool's practicality and ease of use. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a structural schematic diagram of a tool for disassembling a pin fixing pin, as described in a specific embodiment of this utility model. The components include: a snap-fit ​​part 1, a main body part 2, a thick rod 20, a first thin rod 21, a second thin rod 22, a pull part 3, a pull ring body 30, and a connecting plate 31. Detailed Implementation

[0020] 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. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] The following is in conjunction with the appendix Figure 1 The present invention will be described in detail with reference to specific embodiments: like Figure 1 As shown, this utility model provides a tool for disassembling a pin fixing pin. The tool is divided into a locking part 1, a main body 2, and a pull part 3 connected sequentially from the proximal end to the distal end. It should be noted that in this utility model, "proximal end" refers to the end closer to the pin fixing pin, and "distal end" refers to the end closer to the operator.

[0022] The snap-fit ​​part 1 is a snap-fit ​​structure for fitting onto the outer wall of the pin or fixing pin, and the thickness of the snap-fit ​​structure is ≤20mm. In this embodiment, the thickness of the snap-fit ​​structure is less than 10mm, which is suitable for narrow slits with gaps >10mm, thus having a wider range of applications.

[0023] This utility model relates to a tool for disassembling pins and fixing pins. In use, the locking part 1 is first tilted and hooked onto the outer wall of the pin or fixing pin to generate an initial clamping force. Then, an axial pulling force is applied by the pull part 3, causing the locking part 1 to move the pin or fixing pin outwards until the pin falls out of the mounting hole.

[0024] The disassembly tool for pin fixing provided by this utility model has a locking structure thickness controlled within 20mm, effectively overcoming the limitations of traditional disassembly tools in terms of spatial applicability. In actual engineering applications, the pins or fixing pins of many mechanical devices are often installed in narrow gaps, which traditional disassembly tools such as pliers cannot penetrate due to their excessive size. However, this disassembly tool, with its thin locking structure, can accurately reach into such narrow spaces, tilting the locking part 1 onto the outer wall of the pin or fixing pin to achieve effective disassembly, thus greatly expanding the application scenarios of the disassembly tool. Meanwhile, the disassembly tool adopts a simple three-section design, namely the sequentially connected snap-fit ​​part 1, the main body part 2, and the pull part 3. The structure is simple and easy to mass-produce, which can meet the market demand for pin fixing pin disassembly tools at a lower cost. Furthermore, the operator only needs to hold the pull part 3 with one hand to complete the entire process of positioning, hooking, and pulling off the locking part 1. This one-handed operation mode not only simplifies the operation process and improves disassembly efficiency, but also allows the operator to complete disassembly tasks flexibly and conveniently even in space-constrained working environments, further enhancing the tool's practicality and ease of use.

[0025] Furthermore, the snap-fit ​​part 1 and the main body part 2 can be fixedly connected or detachably connected, either is acceptable. In this embodiment, the snap-fit ​​part 1 and the main body part 2 are fixedly connected by welding, which is simple to implement and the connection is reliable.

[0026] Preferably, the snap-fit ​​part 1 and the main body part 2 are detachably connected, which facilitates quick replacement of the snap-fit ​​part 1 with a suitable size according to the diameter specification of the pin fixing pin. This significantly improves the versatility of the disassembly tool for pin fixing pins of different diameters and can flexibly adapt to diverse disassembly scenarios. It should be noted that this utility model does not limit how the detachable connection between the two is achieved; for example, it can be a plug-in connection, a snap-fit ​​connection, a threaded connection, etc.

[0027] Furthermore, the C-shaped hook structure allows the locking part 1 to be connected to the pin or fixing pin without needing to be inserted from the end. Simply align the opening with the target component and tilt it at a certain angle to quickly hook it onto the outer wall of the pin or fixing pin. This side-hook connection is particularly suitable for scenarios with limited space where end-mounted installation is difficult, significantly improving preparation efficiency before disassembly. Simultaneously, after the C-shaped structure engages the pin or fixing pin, its two side walls form a wraparound grip on the target component from two directions, effectively dispersing stress generated during pulling and reducing the risk of the locking part slipping off the target component.

[0028] Simultaneously, a first anti-slip texture can be formed on the outer wall of the snap-fit ​​structure. When using disassembly tools, the snap-fit ​​structure must be firmly hooked onto the outer wall of the pin or fixing pin and withstand a large outward pulling force. The first anti-slip texture on the outer wall of the snap-fit ​​structure can effectively increase the contact friction with the surface of the pin or fixing pin. By increasing surface roughness and changing the micromorphology of the contact surface, the anti-slip texture makes the fit between the snap-fit ​​structure and the pin or fixing pin tighter. During the pulling of the disassembly tool, even if there are factors such as oil or rust on the surface of the pin or fixing pin that affect friction, the first anti-slip texture can ensure that the snap-fit ​​structure firmly grips the target part, avoiding disassembly failure due to slippage, and greatly improving the reliability of the disassembly operation.

[0029] It should be noted that the specific shape of the first anti-slip pattern is not limited. For example, a vertical stripe structure design can be used to increase friction; or an interlaced serrated anti-slip pattern can be used to provide good friction in all directions.

[0030] Furthermore, the pull part 3 includes a pull ring body 30, and the outer wall of the pull ring body 30 is formed with a second anti-slip texture, which similarly increases the friction at the grip. The second anti-slip texture can be designed with reference to the first anti-slip texture, and will not be described in detail here.

[0031] Furthermore, the main body 2 includes a thick rod 20 and a first thin rod 21 and a second thin rod 22 located at both ends of the thick rod 20. One end of the first thin rod 21 is fixedly connected to the thick rod 20, and the other end is fixedly connected to the snap-fit ​​structure; one end of the second thin rod 22 is fixedly connected to the thick rod 20, and the other end is fixedly connected to the pull handle 3. The connection point with the pull handle 3 is the second thin rod 22, which facilitates the proximal end to extend into the slit. Meanwhile, the thick rod 20 is located in the middle of the main body 2, and its greater mass helps to balance the overall weight distribution of the disassembly tool. The snap-fit ​​part 1 hooks and secures the pin at the front end, and the pull handle 3 provides pulling force at the end. The weight of the thick rod 20 makes the tool's center of gravity closer to the middle, preventing the tool from becoming top-heavy or tail-heavy due to excessive weight difference between the front and rear. This balanced weight distribution makes operation easier for the operator, especially in confined spaces or scenarios requiring prolonged operation, reducing operational difficulty and improving the user experience.

[0032] Furthermore, the thick rod 20, the first thin rod 21, and the second thin rod 22 are welded together, and the second thin rod 22 is welded to the pull part 3. This welding connection method is simple and reliable.

[0033] Meanwhile, a connecting plate 31 is provided at the connection between the second thin rod 22 and the pull part 3. The connecting plate 31 is perpendicular to the axial direction of the second thin rod 22. The design of the connecting plate 31 facilitates the welding and installation of the pull part 3.

[0034] Furthermore, in this utility model, the thick rod 20 is a rod-shaped structure with adjustable length, which facilitates the user to adjust the length of the thick rod 20 according to the actual situation, and adapts to the disassembly of fixing pins of different depths. It should be noted that the specific structure of the thick rod 20 is not limited in this utility model. For example, a multi-stage telescopic structure can be adopted, and specific designs can be made with reference to existing technologies, all of which fall within the protection scope of this utility model.

[0035] Furthermore, the thick rod 20, the first thin rod 21, and the second thin rod 22 are all made of round steel, and waste round steel can be selected to realize the secondary utilization of waste materials and save production costs.

[0036] The present invention has been further described above with reference to specific embodiments. However, it should be understood that the specific description herein should not be construed as limiting the substance and scope of the present invention. Various modifications made by those skilled in the art to the above embodiments after reading this specification are all within the scope of protection of the present invention.

Claims

1. A tool for disassembling a pin fixing pin, characterized in that: The disassembly tool for the pin fixing pin is divided into a snap-fit ​​part, a main body part, and a pull part connected sequentially from the proximal end to the distal end. The snap-fit ​​part is a snap-fit ​​structure for fitting onto the outer wall of the pin or fixing pin, and the thickness of the snap-fit ​​structure is ≤20mm; the snap-fit ​​structure is C-shaped hook.

2. The disassembly tool for a pin fixing pin according to claim 1, characterized in that: The snap-fit ​​portion is detachably connected to the main body portion.

3. The disassembly tool for a pin fixing pin according to claim 1, characterized in that: The outer wall of the snap-fit ​​structure has a first anti-slip texture.

4. The disassembly tool for a pin fixing pin according to claim 1, characterized in that: The pull part includes a pull ring body, and the outer wall of the pull ring body is formed with a second anti-slip texture.

5. The disassembly tool for a pin fixing pin according to claim 1, characterized in that: The main body includes a thick rod and a first thin rod and a second thin rod disposed at both ends of the thick rod; one end of the first thin rod is fixedly connected to the thick rod, and the other end is fixedly connected to the snap-fit ​​structure; one end of the second thin rod is fixedly connected to the thick rod, and the other end is fixedly connected to the pull part.

6. The disassembly tool for a pin fixing pin according to claim 5, characterized in that: The thick rod, the first thin rod, and the second thin rod are welded together. The second thin rod and the pull part are welded together.

7. The disassembly tool for a pin fixing pin according to claim 5, characterized in that: A connecting plate is provided at the connection between the second thin rod and the pull part, and the connecting plate is perpendicular to the axial direction of the second thin rod.

8. The disassembly tool for a pin fixing pin according to claim 5, characterized in that: The thick rod is a rod-shaped structure with an adjustable length.

9. The disassembly tool for a pin fixing pin according to claim 5, characterized in that: The thick rod, the first thin rod, and the second thin rod are all made of round steel.

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