Cotter pin dismounting device

Abstract

The utility model relates to the field of tools, and provides a cotter pin dismounting device. The cotter pin dismounting device comprises a supporting block, a connecting hole is formed in the supporting block, and the connecting hole and the center of the supporting block are arranged in a staggered mode. The connecting rod is movably arranged in the connecting hole in a penetrating manner; the drawing pin is arranged at the end, penetrating out of the connecting hole, of the connecting rod, and the two ends of the drawing pin are conical. The cotter pin dismounting device can provide enough pull-out force, so that the dismounting time of the cotter pin is greatly shortened; the safety risk in the operation process is reduced; and different working environments and cotter pin positions can be more flexibly adapted. The cotter pin in a narrow space or a complex structure can be easily disassembled by adjusting the angle and the position of the device. The cotter pin dismounting device is simple in structure and easy to operate and maintain. And each part is easy to disassemble and replace, so that the maintenance cost and the use difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of tooling and provides a cotter pin removal device. Background Technology

[0002] During the maintenance of railway vehicle bogies, the removal of cotter pins is a frequent and important operation. Traditional methods of removing cotter pins mainly rely on hand hammers, pliers, chisels, and other tools. This process is not only inefficient and cumbersome, but improper operation can also damage other surrounding components, thus affecting the overall quality and progress of the maintenance work. Utility Model Content

[0003] This utility model provides a cotter pin removal device to solve the problem of difficult cotter pin removal in related technologies.

[0004] This utility model embodiment provides a cotter pin removal device, including:

[0005] A support block, wherein a connecting hole is provided on the support block, and the connecting hole is offset from the center of the support block;

[0006] A connecting rod is movably inserted through the connecting hole;

[0007] A pull pin is provided at one end of the connecting rod that protrudes from the connecting hole, and both ends of the pull pin are tapered.

[0008] According to one embodiment of the present invention, the connecting hole is a square hole, and a connecting section is provided on the connecting rod, the shape of which is adapted to the shape of the connecting hole.

[0009] According to one embodiment of the present invention, the inner wall of the connecting hole is provided with a first positioning part, and the outer surface of the connecting segment is provided with a second positioning part. The connecting segment is positioned in the connecting hole by the first positioning part and the second positioning part.

[0010] According to one embodiment of the present invention, the connecting rod is further provided with a gripping section, which is connected to the end of the connecting section away from the pull pin.

[0011] According to one embodiment of the present invention, the cross-section of the gripping segment is circular along a direction perpendicular to the axis of the gripping segment.

[0012] According to one embodiment of the present invention, an anti-slip sleeve is provided at the end of the gripping section opposite to the pull pin.

[0013] According to one embodiment of the present invention, the anti-slip sleeve and the gripping section are locked together by a locking member.

[0014] According to one embodiment of the present invention, a working section is provided at one end of the connecting section away from the holding section, and the working section has an installation hole, and the pull pin is installed in the installation hole.

[0015] According to one embodiment of the present invention, the pull pin is interference-fitted with the mounting hole.

[0016] According to one embodiment of the present invention, the cross-sectional area of ​​the working segment gradually decreases from the connecting segment toward the working segment.

[0017] According to the cotter pin removal device provided in this embodiment, the tapered pull pin can be more easily inserted into the gap of the cotter pin and provides sufficient pull-out force, thereby greatly shortening the removal time. Traditional cotter pin removal methods often require users to use tools such as hammers to strike, which is not only inefficient but also poses certain safety hazards. The removal device of this invention, through the design of the connecting rod and pull pin, transforms the striking action into a smooth pulling action, thereby greatly reducing the safety risks during operation. Because the connecting hole of the support block is offset from the center, the device can more flexibly adapt to different working environments and cotter pin positions. Whether in confined spaces or complex structures, cotter pins can be easily removed by adjusting the angle and position of the device. The removal device of this invention has a simple structure, is easy to operate and maintain. Each component is also easy to disassemble and replace, thereby reducing maintenance costs and ease of use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic front view of the cotter pin removal device provided by this utility model.

[0020] Figure 2 This is a schematic rear view of the cotter pin removal device provided by this utility model.

[0021] Figure 3 This is a schematic side view of the cotter pin removal device provided by this utility model.

[0022] Figure 4 This is a schematic perspective view of the cotter pin disassembly device provided by this utility model.

[0023] Figure label:

[0024] 100. Support block; 102. Connecting rod; 104. Pull pin; 106. Connecting section; 108. Holding section; 110. Anti-slip sleeve; 112. Locking element; 114. Working section. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0026] like Figures 1 to 4 As shown, this utility model embodiment provides a cotter pin removal device, including:

[0027] A support block 100 is provided with a connecting hole, which is offset from the center of the support block 100.

[0028] The connecting rod 102 is movably inserted through the connecting hole;

[0029] Pull pin 104 is located at one end of connecting rod 102 that protrudes from the connecting hole, and both ends of pull pin 104 are tapered.

[0030] According to the cotter pin removal device provided in this embodiment, the tapered pull pin 104 can be more easily inserted into the gap of the cotter pin and provides sufficient pull-out force, thereby greatly shortening the removal time. Traditional cotter pin removal methods often require users to use tools such as hammers to strike, which is not only inefficient but also poses certain safety hazards. The removal device of this invention, through the design of the connecting rod 102 and the pull pin 104, transforms the striking action into a smooth pulling action, thereby greatly reducing the safety risks during operation. Because the connecting hole of the support block 100 is offset from the center, the device can more flexibly adapt to different working environments and cotter pin positions. Whether in confined spaces or complex structures, cotter pins can be easily removed by adjusting the angle and position of the device. The removal device of this invention has a simple structure, is easy to operate and maintain. Each component is also easy to disassemble and replace, thereby reducing maintenance costs and ease of use.

[0031] Please continue reading Figures 1 to 4 The cotter pin disassembly device provided in this embodiment of the utility model mainly consists of three parts: a support block 100, a connecting rod 102, and a pull pin 104.

[0032] The support block 100 is the foundation of the device, designed for stable support and positioning. A connecting hole is provided on the support block 100, intentionally offset from its center. This design helps provide sufficient leverage when removing the cotter pin, and also allows the device to adapt more flexibly to different working environments and cotter pin positions.

[0033] The connecting rod 102 is movably inserted into the connecting hole of the support block 100. Its main function is to act as a medium for transmitting force, transferring the force applied by the user to the pull pin 104, thereby enabling the disassembly of the cotter pin. The connecting rod 102 is designed to have a certain degree of rigidity and wear resistance to ensure stable performance and a long service life during disassembly.

[0034] The pull pin 104 is located at the end of the connecting rod 102 that protrudes from the connecting hole and is the part that directly acts on the cotter pin. Both ends of the pull pin 104 are designed to be tapered. This design facilitates easier insertion into the gap of the cotter pin and provides greater pull-out force through the gradually increasing taper. The tapered design also allows the pull pin 104 to more effectively prevent slippage during disassembly, thereby improving the efficiency and safety of disassembly.

[0035] According to one embodiment of the present invention, the connecting hole is a square hole, and a connecting section 106 is provided on the connecting rod 102, the shape of which is adapted to the connecting hole.

[0036] In one specific embodiment of this utility model, the connecting hole is designed to be square, and correspondingly, a connecting section 106 that perfectly matches the shape of the square hole is specially provided on the connecting rod 102. This design enables the connecting rod 102 to be stably fixed after being inserted into the connecting hole, effectively preventing the connecting rod 102 from rotating or slipping during the process of being subjected to force.

[0037] The fitting design of the square hole and the connecting section 106 not only improves the stability and reliability of the device, but also allows the user to more accurately control the direction and force of the linkage 102 during operation. This design improvement is crucial for ensuring a smooth disassembly process and improving disassembly efficiency.

[0038] The fitting design of the square hole and connecting section 106 significantly improves the overall stability of the device. During disassembly, the connecting rod 102 is firmly fixed in the connecting hole, preventing rotation or slippage, thus ensuring the accuracy and safety of the disassembly operation. Due to the stable fixation of the connecting rod 102 in the connecting hole, the user can more accurately control the direction and force of its movement. This helps reduce errors and uncertainties during disassembly, improving efficiency and success rate. The fitting design of the square hole and connecting section 106 simplifies the operation of the disassembly device. Users do not need to frequently adjust the position or direction of the connecting rod 102 during disassembly; they can simply pull the connecting rod 102 to remove the cotter pin. This reduces operational difficulty and complexity, improving the user experience. The stable fixation of the connecting rod 102 in the connecting hole reduces wear and damage caused by rotation or slippage. This helps extend the service life of the disassembly device and reduce replacement and maintenance costs.

[0039] According to one embodiment of the present invention, a first positioning part is provided on the inner wall of the connecting hole, and a second positioning part is provided on the outer surface of the connecting segment 106. The connecting segment 106 is positioned in the connecting hole by the first positioning part and the second positioning part.

[0040] In one specific embodiment of this utility model, the inner wall of the connecting hole is designed with a first positioning part, and at the same time, the outer surface of the connecting segment 106 is also correspondingly provided with a second positioning part. The purpose of these two positioning parts is to accurately position the connecting segment 106 in the connecting hole through their mutual cooperation.

[0041] The first positioning part can take various forms, such as a protrusion, a groove, or a specific geometric shape, and is precisely arranged on the inner wall of the connecting hole for mating with the second positioning part. Correspondingly, the second positioning part is also designed to fit tightly with the first positioning part, for example, a protrusion corresponding to a groove, or a specific geometric shape corresponding to a specific shape.

[0042] When the connecting segment 106 is inserted into the connecting hole, the first positioning part and the second positioning part will come into contact with each other and fit tightly, thereby ensuring the stable position of the connecting segment 106 in the connecting hole. This design not only improves the stability of the connection, but also makes the connecting segment 106 less prone to displacement or rotation during the process of being subjected to force.

[0043] Through the cooperation of the first and second positioning parts, the connecting segment 106 can be more securely positioned in the connecting hole. This design effectively prevents the connecting segment 106 from shifting or rotating during the force process, thereby ensuring the overall stability and reliability of the disassembly device. The design of the first and second positioning parts allows the connecting segment 106 to be precisely positioned in the predetermined position in the connecting hole. This positioning accuracy is crucial for ensuring the smooth progress of the disassembly process and improving disassembly efficiency. Due to the presence of the first and second positioning parts, users do not need to perform complex adjustments and calibrations when installing the disassembly device. Simply inserting the connecting segment 106 into the connecting hole achieves precise positioning and a secure connection. This greatly reduces the complexity and time cost of the installation process. The stable positioning of the connecting segment 106 in the connecting hole reduces wear and damage caused by shifting or rotating. This helps extend the service life of the disassembly device and reduce replacement and maintenance costs.

[0044] According to one embodiment of the present invention, the connecting rod 102 is further provided with a gripping section 108, which is connected to one end of the connecting section 106 away from the pull pin 104.

[0045] In one specific embodiment of this utility model, the design of the connecting rod 102 has been further optimized. Specifically, a gripping section 108 is added to the connecting rod 102, which is connected to the end of the connecting section 106 opposite to the pull pin 104. The gripping section 108 is designed to provide the user with a more comfortable and convenient gripping point, so that force can be applied more easily when removing the cotter pin.

[0046] The shape and size of the grip section 108 can be optimized according to ergonomic principles to ensure that the user can maintain a good hand posture and force distribution during use. In addition, the grip section 108 can also use non-slip materials or textured designs to increase grip stability and safety.

[0047] The grip section 108 is designed to allow users to more easily hold the link 102 when removing the cotter pin, thus improving operational convenience. Users do not need to use additional tools or clamps to secure the link 102; they can simply grip the grip section 108 to perform the disassembly operation. The grip section 108 is typically designed with an ergonomic shape and size, which helps users maintain good hand posture and force distribution during use. Simultaneously, the application of anti-slip materials or textured designs further enhances grip stability and reduces the safety risks caused by slippage. Because the grip section 108 provides a more comfortable and convenient grip point, users can more easily apply force for disassembly operations. This helps to shorten disassembly time and improve disassembly efficiency. The design of the grip section 108 not only improves operational convenience and stability but also enhances the user experience through its ergonomic design and the application of anti-slip materials. Users experience reduced hand fatigue and discomfort when using the disassembly device for extended periods.

[0048] According to one embodiment of the present invention, the cross-section of the gripping section 108 is circular along the direction perpendicular to the axis of the gripping section 108.

[0049] In one specific embodiment of this utility model, the design of the grip section 108 is further refined. Specifically, the cross-section of the grip section 108 is designed to be circular along a direction perpendicular to the axis of the grip section 108. This design aims to provide the user with a more comfortable and ergonomic grip interface, so that force can be applied more easily and a stable grip can be maintained when removing the cotter pin.

[0050] The circular cross-section design means that the grip section 108 has the same curvature in all directions, which allows users to experience a more uniform and comfortable feel when holding it. In addition, the circular cross-section also helps to distribute hand pressure and reduce hand fatigue during prolonged use.

[0051] The circular cross-section design allows the grip section 108 to better conform to the shape of the user's hand, thus improving grip comfort. Users experience a more natural and smooth grip during use. Because the circular cross-section has the same curvature in all directions, it makes it easier for users to maintain a stable posture and force distribution. This helps reduce safety risks caused by unstable grip and improves the stability of disassembly operations. The circular cross-section design helps distribute hand pressure, reducing hand fatigue during prolonged use of the disassembly device. This is especially important for users who frequently perform disassembly operations, contributing to improved work efficiency and comfort. By optimizing the design of the grip section 108, the disassembly device of this invention significantly improves the user experience. Users experience a more comfortable, stable, and efficient disassembly experience, thereby improving overall work satisfaction and overall satisfaction.

[0052] According to one embodiment of the present invention, an anti-slip sleeve 110 is provided at one end of the gripping section 108 away from the pull pin 104.

[0053] In one specific embodiment of this utility model, the design of the grip section 108 has been further optimized and enhanced. Specifically, an anti-slip sleeve 110 is added to the end of the grip section 108 opposite to the pull pin 104. The main function of the anti-slip sleeve 110 is to increase the friction between the user's hand and the grip section 108, thereby preventing the safety risk caused by the hand slipping during disassembly.

[0054] The anti-slip sleeve 110 can be made of a variety of materials and processes to ensure good anti-slip performance and durability. For example, the anti-slip sleeve 110 can be made of rubber, silicone or other materials with anti-slip function, and can be tightly connected to the grip section 108 through injection molding, vulcanization or other processes.

[0055] In addition, the design of the anti-slip sleeve 110 takes ergonomic principles into account to ensure that its shape and size match the shape of the user's hand, thereby providing a more comfortable and stable grip experience.

[0056] The anti-slip sleeve 110 significantly increases the friction between the user's hand and the grip section 108, effectively preventing safety risks caused by hand slippage during disassembly. This allows users to perform disassembly operations with greater peace of mind and confidence. The anti-slip sleeve 110 not only increases friction but also enhances the contact area and stability between the user's hand and the grip section 108 through its material and shape design. This makes it easier for users to maintain a stable posture and force distribution during disassembly, improving operational stability and accuracy. The anti-slip sleeve 110 not only improves the safety and stability of the disassembly device but also enhances the user experience through its comfortable feel and ergonomic shape. Users can experience a more comfortable, stable, and efficient disassembly process.

[0057] According to one embodiment of the present invention, the anti-slip sleeve 110 and the grip section 108 are locked together by the locking member 112.

[0058] In one specific embodiment of this utility model, the connection method between the anti-slip sleeve 110 and the grip section 108 is innovatively designed. Specifically, the anti-slip sleeve 110 and the grip section 108 are not simply connected by adhesive or sleeve, but are locked together by a locking member 112. This design not only ensures a stable connection between the anti-slip sleeve 110 and the grip section 108, but also provides the possibility of easy disassembly and replacement of the anti-slip sleeve 110.

[0059] The locking element 112 can be made of various forms and materials to meet different connection requirements and working environments. For example, the locking element 112 can be fasteners such as bolts, nuts, and clamps, which can securely lock the anti-slip sleeve 110 onto the holding section 108 through threaded connections, clamping, or other methods. In addition, the locking element 112 can also be designed with an adjustable tightness structure so that the tightness of the anti-slip sleeve 110 can be adjusted according to actual needs.

[0060] Locking the anti-slip sleeve 110 to the grip section 108 via the locking element 112 ensures a secure connection between the two. This connection method can withstand greater tensile and torque forces and effectively prevents the anti-slip sleeve 110 from detaching or being damaged due to excessive force during disassembly. Using the locking element 112 to connect the anti-slip sleeve 110 and the grip section 108 makes disassembling and replacing the anti-slip sleeve 110 more convenient. When the anti-slip sleeve 110 is worn or damaged, the user can simply loosen the locking element 112 to remove the old anti-slip sleeve 110 and install a new one, thereby extending the service life of the disassembly device.

[0061] According to one embodiment of the present invention, a working section 114 is provided at one end of the connecting section 106 away from the holding section 108. The working section 114 has an installation hole, and the pull pin 104 is installed in the installation hole.

[0062] In one specific embodiment of this utility model, the design of the connecting section 106 is further improved. Specifically, a working section 114 is added to the end of the connecting section 106 opposite to the holding section 108. The main function of the working section 114 is to act as the part that contacts and applies force to the part to be disassembled, so as to realize the disassembly operation. In order to install the pull pin 104, a mounting hole is opened on the working section 114, through which the pull pin 104 is connected to other parts of the disassembly device.

[0063] The design of the mounting hole can be customized according to the shape and size of the pull pin 104 to ensure a tight fit and secure connection between the two. In addition, the mounting hole can also be equipped with auxiliary structures such as threads and chamfers to facilitate the installation and removal of the pull pin 104.

[0064] The shape and size of the working section 114 can be customized according to the characteristics of the component to be disassembled and the disassembly requirements. For example, the working section 114 can be designed as flat, conical, or other shapes to accommodate components of different shapes and sizes to be disassembled.

[0065] By creating mounting holes in the working section 114 and installing pull pins 104, the disassembly device can more directly and effectively contact and apply force to the component to be disassembled. This helps to shorten disassembly time and improve disassembly efficiency. The design of the working section 114 can be customized according to the characteristics of the component to be disassembled, thereby ensuring that the disassembly device can be used for different types of disassembly tasks.

[0066] According to one embodiment of the present invention, the pull pin 104 is interference-fitted with the mounting hole.

[0067] In one specific embodiment of this utility model, the connection between the pull pin 104 and the mounting hole adopts an interference fit. An interference fit is an assembly method that uses the interference value between the shaft and the hole to generate elastic pressure between the surfaces of the parts after assembly, thereby achieving a tight connection. In this utility model, the diameter of the pull pin 104 is designed to be slightly larger than the diameter of the mounting hole. When the pull pin 104 is installed into the mounting hole, due to the interference, a certain elastic pressure is generated between the pull pin 104 and the mounting hole, thereby achieving a stable connection.

[0068] To ensure the reliability and stability of the interference fit, the size and shape of the mounting hole need to be precisely designed and machined according to the actual size and shape of the pull pin 104. Simultaneously, during assembly, appropriate assembly methods and tools must be used to ensure that the pull pin 104 can be smoothly installed into the mounting hole without generating excessive assembly stress or damaging the parts.

[0069] The interference fit between the pull pin 104 and the mounting hole generates significant friction, ensuring a secure connection. This connection method can withstand substantial tensile and torque forces, enabling the disassembly device to remain stable and reliable during disassembly. The interference fit allows the pull pin 104 to fit more tightly within the mounting hole, enhancing the force transmission capability of the disassembly device. During disassembly, the pull pin 104 can more effectively transfer force to the component being disassembled, thereby improving disassembly efficiency and success rate.

[0070] According to one embodiment of the present invention, the cross-sectional area of ​​the working segment 114 gradually decreases from the connecting segment 106 toward the working segment 114.

[0071] In one specific embodiment of this utility model, the design of the working segment 114 has been further optimized. Specifically, the cross-sectional area of ​​the working segment 114 gradually decreases from the connecting segment 106 towards the working segment 114. This design makes the end of the working segment 114 sharper or smaller as it approaches the part to be disassembled, making it easier to insert into the gap of the part to be disassembled and achieving a more precise disassembly operation.

[0072] The gradually decreasing cross-sectional area of ​​the working section 114 can be customized according to actual needs and the characteristics of the disassembly task. For example, the working section 114 can be designed with a conical, wedge-shaped, or other gradually tapering shape. This design not only improves the accuracy and efficiency of the disassembly operation but also makes the disassembly device more adaptable to different types of disassembly tasks.

[0073] The gradually decreasing cross-sectional area of ​​the working section 114 allows the disassembly device to be more easily inserted into the gap when approaching the component to be disassembled, thus achieving a more precise disassembly operation. This helps reduce errors and damage during the disassembly process and improves the success rate of disassembly. Because the end of the working section 114 becomes sharper or smaller, it can more easily penetrate the tightly connected parts of the component to be disassembled, thereby speeding up the disassembly process. This design makes the disassembly process smoother and more efficient. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cotter pin removal device, characterized in that, include: A support block (100) is provided with a connecting hole, which is offset from the center of the support block (100); The connecting rod (102) is movably inserted through the connecting hole; A pull pin (104) is provided at one end of the connecting rod (102) that protrudes from the connecting hole, and the two ends of the pull pin (104) are tapered.

2. The cotter pin removal device according to claim 1, characterized in that, The connecting hole is a square hole, and the connecting rod (102) is provided with a connecting section (106), the connecting section (106) being adapted to the shape of the connecting hole.

3. The cotter pin removal device according to claim 2, characterized in that, The inner wall of the connecting hole is provided with a first positioning part, and the outer surface of the connecting segment (106) is provided with a second positioning part. The connecting segment (106) is positioned in the connecting hole by the first positioning part and the second positioning part.

4. The cotter pin removal device according to claim 2, characterized in that, The connecting rod (102) is also provided with a gripping section (108), which is connected to the end of the connecting section (106) away from the pull pin (104).

5. The cotter pin removal device according to claim 4, characterized in that, Along a direction perpendicular to the axis of the gripping section (108), the cross-section of the gripping section (108) is circular.

6. The cotter pin removal device according to claim 4, characterized in that, The gripping section (108) is provided with an anti-slip sleeve (110) at the end opposite to the pull pin (104).

7. The cotter pin removal device according to claim 6, characterized in that, The anti-slip sleeve (110) and the grip section (108) are locked together by a locking member (112).

8. The cotter pin removal device according to any one of claims 4 to 7, characterized in that, The connecting section (106) is provided with a working section (114) at one end away from the holding section (108). The working section (114) has an installation hole, and the pull pin (104) is installed in the installation hole.

9. The cotter pin removal device according to claim 8, characterized in that, The pull pin (104) is interference-fitted with the mounting hole.

10. The cotter pin removal device according to claim 8, characterized in that, From the connecting segment (106) toward the working segment (114), the cross-sectional area of ​​the working segment (114) gradually decreases.

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