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By designing the positioning and operating parts of the cotter pin remover and utilizing a hinged structure to simplify the installation process of the cotter pin, the time-consuming and labor-intensive installation problem in the prior art is solved, and efficient and reliable cotter pin positioning is achieved.

CN223326304UActive Publication Date: 2025-09-12CRRC QIQIHAR ROLLING CO LTD
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Patent Information

Application Number
CN202422774293.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-13
Publication Date
2025-09-12
Estimated Expiration
2034-11-13

AI Technical Summary

Technical Problem

In the prior art, the installation process of the cotter pin requires the cooperation of multiple people or the operation of one person with both hands, which is time-consuming and labor-intensive, and has low installation efficiency and is difficult to ensure quality.

Method used

A pin-blocking device is designed, which includes a positioning part and an operating part. The pin-blocking part can be inserted between the long leg and the short leg of the cotter pin through a hinged structure, and the pin-blocking part is driven to rotate by rotating the operating part to achieve the separation and positioning of the cotter pin legs.

Benefits of technology

It simplifies the installation process, reduces labor intensity, and improves installation efficiency and quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a pin opener, which comprises a positioning piece, a pin opener, a pin opening device, a pin opening device, a pin opening device, a pin opening device, a pin opening device and a pin opening device, the operating piece is hinged to the positioning piece, a pin opening piece capable of being inserted between the long leg and the short leg of the cotter pin is arranged on the operating piece, the pin opening piece and the positioning groove are located on the two sides of the positioning part, the positioning groove and the positioning part are arranged in the first direction, the rotating axis of the operating piece extends in the second direction, and an included angle is formed between the first direction and the second direction. Through the technical scheme provided by the invention, the problem that the cotter pin is inconvenient to mount in the prior art can be solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of special tools, in particular to a pin remover. Background Art

[0002] Pins and cotter pins are connecting parts that are often used together, such as flat hole round pins and cotter pins. By passing the flat hole round pin through the two parts that need to be connected, and then inserting the cotter pin into the flat hole of the flat hole round pin, the long leg and the short leg are separated by operating the long leg and the short leg, and the distance between the long leg and the short leg is made greater than the size of the flat hole, which can prevent the cotter pin from falling out of the flat hole and limit the flat hole round pin.

[0003] In the related art, before the cotter pin is used to limit the flat hole round pin, the long leg and the short leg of the cotter pin are almost in a fitted state, and it requires the cooperation of multiple people or a single person to operate the flat shovel and the hand hammer with both hands respectively. The flat shovel can only partially offset the impact of the hand hammer when the cotter pin is knocked open, but cannot fix the cotter pin. When the cotter pin is knocked open with the hand hammer, the cotter pin will rotate with the flat hole round pin, and it is necessary to knock it multiple times or straighten the position of the cotter pin that has been knocked off track and cannot be knocked, and then repeat the knocking process. The installation process is time-consuming and labor-intensive, inefficient, and the working space is small. It is not very convenient for operators to operate general tools, and the quality cannot be guaranteed. Utility Model Content

[0004] The utility model provides a cotter pin remover to solve the problem of inconvenient installation of cotter pins in the related art.

[0005] The utility model provides a pin breaker, which includes: a positioning member, having a positioning groove for positioning a cotter pin and a positioning portion for positioning the pin; an operating member, which is hinged to the positioning member, and the operating member is provided with a pin breaker member that can be inserted between the long leg and the short leg of the cotter pin, the pin breaker member and the positioning groove are located on both sides of the positioning portion, the positioning groove and the positioning portion are arranged along a first direction, the rotation axis of the operating member extends along a second direction, and the first direction and the second direction are arranged at an angle.

[0006] Furthermore, the positioning member includes a positioning plate, a first limiting plate and a second limiting plate. The first limiting plate and the second limiting plate are spaced apart on the positioning plate. The first limiting plate, the positioning plate and the second limiting plate together form a positioning groove.

[0007] Furthermore, the positioning member further includes a positioning cylinder, which is connected to the end of the positioning plate. One end of the positioning cylinder is an open structure, and the positioning cylinder forms a positioning portion.

[0008] Furthermore, the first limiting plate and the second limiting plate are arranged at one end of the positioning plate close to the positioning portion.

[0009] Furthermore, a hinge shaft is provided at the other end of the positioning cylinder, the operating member is hinged to the positioning cylinder via the hinge shaft, and the axis of the hinge shaft coincides with the axis of the positioning cylinder.

[0010] Furthermore, the pin-blocking member is slidably provided on the operating member, and the pin-blocking member can be moved close to or away from the positioning portion.

[0011] Furthermore, the operating member includes an operating plate and a sliding sleeve slidably arranged on the operating plate, the pin is connected to the sliding sleeve, and the operating plate is hinged to the positioning member.

[0012] Furthermore, the operating member also includes a limiting member, and the sliding sleeve is provided with an avoidance hole. The limiting member passes through the avoidance hole and can abut against the operating panel.

[0013] Furthermore, the locking member includes a connecting section and a locking section that are connected and arranged at an angle, the connecting section is connected to the sliding sleeve, and the locking section is parallel to the operating plate.

[0014] Furthermore, weight-reducing holes are provided on the operating panel.

[0015] Using the technical solution of the present invention, the pin-removing device includes a positioning member and an operating member. When in use, the pin is matched with the positioning portion of the positioning member, the head of the cotter pin is placed in the positioning groove of the positioning member, and the pin-removing member on the operating member is inserted between the long leg and the short leg of the cotter pin. Since the operating member and the positioning member are hinged, the operator rotates the operating member relative to the positioning member by holding the positioning member and the operating member. The operating member drives the pin-removing member on it to rotate relative to the positioning member, and the pin-removing member can rotate relative to the pin and drive the legs of the cotter pin to rotate. By rotating the operating member clockwise and counterclockwise respectively, the long leg and short leg of the cotter pin can be driven to rotate respectively, thereby separating the long leg and the short leg, and then using the cotter pin to position the pin. Compared with manual operation, this method simplifies the installation process, reduces labor intensity, and improves installation efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a pin-removing device according to an embodiment of the present invention is shown;

[0018] Figure 2 A schematic diagram showing the pin-removing device provided by the embodiment of the present utility model applied to a specific embodiment 1 is shown;

[0019] Figure 3A schematic diagram showing the pin-removing device provided by the embodiment of the present utility model applied to a specific embodiment 1 is shown;

[0020] Figure 4 A schematic diagram showing the pin-removing device provided by the embodiment of the present utility model applied to a specific embodiment 1 is shown;

[0021] Figure 5 A schematic diagram showing the pin-removing device provided by the embodiment of the present utility model applied to a specific embodiment 1 is shown;

[0022] Figure 6 A schematic diagram showing the pin-removing device provided by the embodiment of the present utility model applied to the specific embodiment 2 is shown;

[0023] Figure 7 A schematic diagram showing the pin-removing device provided by the embodiment of the present utility model applied to the specific embodiment 2 is shown;

[0024] Figure 8 A schematic diagram showing the pin-removing device provided by the embodiment of the present utility model applied to the specific embodiment 2 is shown;

[0025] Figure 9 A schematic diagram showing the pin-removing device provided by an embodiment of the utility model applied to a second specific embodiment is shown.

[0026] The above drawings include the following reference numerals:

[0027] 10. Positioning member; 11. Positioning groove; 12. Positioning portion; 13. Positioning plate; 14. First limiting plate; 15. Second limiting plate;

[0028] 20. Operating member; 21. Pin-breaking member; 211. Connecting section; 212. Pin-breaking section; 22. Operating panel; 221. Lightening hole; 23. Sliding sleeve; 24. Limiting member. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figure 1As shown, an embodiment of the utility model provides a pin breaker, which includes a positioning member 10 and an operating member 20. The positioning member 10 has a positioning groove 11 for positioning a cotter pin and a positioning portion 12 for positioning a pin; the operating member 20 is hinged to the positioning member 10, and the operating member 20 is provided with a pin breaker 21 that can be inserted between the long leg and the short leg of the cotter pin. The pin breaker 21 and the positioning groove 11 are located on both sides of the positioning portion 12, the positioning groove 11 and the positioning portion 12 are arranged along a first direction, and the rotation axis of the operating member 20 extends along a second direction, and the first direction and the second direction are set at an angle.

[0031] Using the technical solution of the present invention, the pin remover includes a positioning member 10 and an operating member 20. During use, the pin is matched with the positioning portion 12 of the positioning member 10, the head of the cotter pin is placed in the positioning groove 11 of the positioning member 10, and the pin remover 21 on the operating member 20 is inserted between the long leg and short leg of the cotter pin. Since the operating member 20 and the positioning member 10 are hinged, the operator grasps the positioning member 10 and the operating member 20 to rotate the operating member 20 relative to the positioning member 10. The operating member 20 drives the pin remover 21 on it to rotate relative to the positioning member 10, and the pin remover 21 can rotate relative to the pin and drive the legs of the cotter pin to rotate. By rotating the operating member 20 clockwise and counterclockwise respectively, the long leg and short leg of the cotter pin can be rotated respectively, thereby separating the long leg and the short leg, and then using the cotter pin to position the pin. Compared with manual operation, the installation process is simplified, labor intensity is reduced, and installation efficiency and quality are improved.

[0032] Wherein, the positioning member 10 can be provided with a positioning groove 11 for positioning the head of the cotter pin, and other structures for positioning the cotter pin can also be provided, for example, structures such as positioning protrusions. As long as the head of the cotter pin is positioned during operation.

[0033] like Figure 1 As shown, the positioning member 10 includes a positioning plate 13, a first limiting plate 14, and a second limiting plate 15. The first limiting plate 14 and the second limiting plate 15 are spaced apart on the positioning plate 13. The first limiting plate 14, the positioning plate 13, and the second limiting plate 15 together form a positioning groove 11. The positioning member 10 described above has the advantages of being simple in structure and easy to manufacture because the positioning groove 11 is formed by utilizing the space between the first limiting plate 14 and the second limiting plate 15.

[0034] In other embodiments, a groove structure may be provided on the positioning plate 13 to form the positioning groove 11 .

[0035] The positioning plate 13 is a strip-shaped plate, and the operator can hold the end of the positioning plate 13 to operate.

[0036] It should be noted that, in order to improve the adaptability of the pin-opening device, the first limiting plate 14 and the second limiting plate 15 can be configured as a slidable structure on the positioning plate 13 to adjust the size of the positioning groove 11 .

[0037] like Figure 1 As shown, the positioning member 10 further includes a positioning cylinder, which is connected to the end of the positioning plate 13. One end of the positioning cylinder is an open structure, and the positioning cylinder forms a positioning portion 12. The positioning cylinder cooperates with the pin to position the pin, which has the advantages of simple structure and easy operation.

[0038] The size of the positioning portion should be compatible with the size of the pin so that the pin can be positioned more firmly in the positioning cylinder.

[0039] It should be noted that, in order to improve the adaptability of the pin remover, the positioning cylinder can be configured as a structure that can be detachably mounted on the positioning plate 13, such as a threaded connection structure.

[0040] like Figure 1 As shown, the first limiting plate 14 and the second limiting plate 15 are arranged at one end of the positioning plate 13 close to the positioning portion 12. With the above structure, the positioning groove 11 can be arranged close to the positioning portion 12, adapting the distance between the head of the cotter pin and the positioning portion, and reserving sufficient gripping space for the positioning plate 13.

[0041] like Figure 1 As shown, the other end of the positioning cylinder is provided with a hinge shaft, through which the operating member 20 is hingedly connected to the positioning cylinder. The axis of the hinge shaft coincides with the axis of the positioning cylinder. With this arrangement, when the operating member 20 rotates relative to the positioning member 10, the axis of rotation is aligned with the axis of the positioning cylinder. This prevents relative motion between the pin-displacing member 21 and the cotter pin, resulting in a more stable rotation process and a smoother pin-displacing operation.

[0042] like Figure 1 As shown, the pin-blocking member 21 is slidably disposed on the operating member 20, and the pin-blocking member 21 can be moved closer to or further away from the positioning portion 12. With this structure, by adjusting the position of the pin-blocking member 21, the size of the pin-blocking member 21 relative to the positioning portion 12 can be adjusted, thereby adjusting the relative position of the pin-blocking member 21 and the cotter pin, thereby increasing the contact area between the pin-blocking member 21 and the cotter pin.

[0043] like Figure 1 As shown, the operating member 20 includes an operating plate 22 and a sliding sleeve 23 slidably disposed on the operating plate 22. The pin 21 is connected to the sliding sleeve 23, and the operating plate 22 is hinged to the positioning member 10. The sliding sleeve 23 sliding on the operating plate 22 has the advantages of simple structure and easy assembly.

[0044] The sliding sleeve 23 may be configured as other structures, such as a slider.

[0045] like Figure 1 As shown, the operating member 20 further includes a stopper 24. The sliding sleeve 23 is provided with a clearance hole. The stopper 24 passes through the clearance hole and is capable of abutting against the operating plate 22. With the stopper 24, after the sliding sleeve 23 is properly positioned, the stopper 24 can be used to position the sliding sleeve 23 on the operating plate 22, thereby keeping the pin 21 relatively stationary.

[0046] In other embodiments, the limiting member 24 may be configured as a plurality of limiting grooves and limiting protrusions that are spaced apart from each other.

[0047] In this embodiment, the limiting member 24 is a limiting screw.

[0048] like Figure 1 As shown, the pin-blocking member 21 includes a connecting section 211 and a pin-blocking section 212, which are connected and arranged at an angle. The connecting section 211 is connected to the sliding sleeve 23, and the pin-blocking section 212 is parallel to the operating plate 22. With the above-mentioned pin-blocking member 21, the connecting section 211 can be used to compensate for the length of the positioning tube, so that the pin-blocking section 212 can correspond to the cotter pin.

[0049] like Figure 1 As shown, the operating panel 22 is provided with a weight-reducing hole 221, which can reduce the weight of the pin-opening device and make it easier to operate.

[0050] The pin-breaker can also be suspended by utilizing the lightening hole 221 .

[0051] The specific use of the pin-opening device is described below in conjunction with specific embodiments: Specific embodiment 1

[0053] like Figures 2 to 5 As shown, the brake lever on the K6-type railway freight car bogie has a set of flat hole round pins and matching flat cotter pins. Due to the limited operating space of the K6-type bogie, the workpiece is suspended in the air without interfering parts, and the positioning handle cannot be supported and must be held manually. The specific method of using the pin splitter is as follows:

[0054] 1. Insert the positioning cylinder on the positioning plate 13 into the tail end of the flat hole round pin, with the positioning groove 11 covering the head of the flat cotter pin. The pin-blocking piece 21 presses the long leg of the flat cotter pin tail, specifically from the middle, on the tail end of the long leg where the long leg is longer than the short leg. Use the limit piece 24 to fix the pin-blocking piece 21 to the operating plate 22.

[0055] 2. Hold the positioning plate 13 and turn the operating plate 22 outward to split the long leg of the cotter pin. Repeat this step and bend the long leg of the cotter pin several times until it meets the installation requirements.

[0056] 3. Turn back the operating panel 22, press the pin 21 against the short leg of the flat cotter pin, and fix the pin 21 and the operating panel 22 with the stopper 24;

[0057] 4. Hold the positioning plate 13 and turn the operating plate 22 to the other side to split the other short leg of the flat cotter pin. Repeat this step and bend the other short leg of the flat cotter pin multiple times until it meets the installation requirements. Specific embodiment 2

[0059] like Figures 6 to 9 As shown, there are 24 sets of flat hole round pins and matching flat cotter pins on the lower side doors of the C80B open car or EC75 open car of the railway freight car. Since the workpiece is close to the side wall facade, the positioning plate 13 can be pressed against the side wall. Therefore, the positioning plate 13 no longer needs to be held by hand and can be shortened to reduce weight for easy operation. Also, because the side wall facade limits the operating space to only 180 degrees, and there are further space restrictions such as the side wall reinforcement beam and the lower side door not closed tightly nearby, the operating space is even less than 180 degrees. After splitting the pin tail on the first side of the flat cotter pin, it is not possible to continue to split the pin tail on the other side like on the bogie. It is necessary to first remove the positioning plate 13, rotate the flat cotter pin to the short leg to the outside, and then operate again.

[0060] 1. Rotate the long leg of the flat cotter pin to the outside, insert the positioning tube of the positioning plate 13 into the tail end of the flat hole round pin, and cover the positioning groove 11 with the head of the flat cotter pin. The pin 21 presses on the long leg of the flat cotter pin tail, specifically from the middle, on the tail end of the long leg where the long leg is longer than the short leg, and fix the pin 21 to the operating plate 22 with the limiter 24;

[0061] 2. Place the positioning plate 13 against the side wall and turn the operating plate 22 outward to split the long leg of the cotter pin. Repeat this step and bend the long leg of the cotter pin several times until it meets the installation requirements.

[0062] 3. Remove the special installation tool for the flat cotter pin and rotate the flat cotter pin to the outside of the short leg; insert the positioning cylinder of the positioning plate 13 into the tail end of the flat hole round pin again, so that the positioning groove 11 covers the head of the flat cotter pin, and the pin 21 presses the short leg of the flat cotter pin tail, and fix the pin 21 to the operating plate 22 with the limiter 24;

[0063] 4. Place the positioning plate 13 against the side wall and rotate the operating plate 22 to split the other short leg of the flat cotter pin. Repeat this step and bend the other short leg of the flat cotter pin multiple times until it meets the installation requirements.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0065] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0066] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0067] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0068] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pin-removing device, characterized in that: The pin-removing device comprises: A positioning member (10) having a positioning groove (11) for positioning a cotter pin and a positioning portion (12) for positioning a pin; An operating member (20) is hinged to the positioning member (10), and a pin-blocking member (21) capable of being inserted between the long leg and the short leg of the cotter pin is provided on the operating member (20), the pin-blocking member (21) and the positioning groove (11) are located on both sides of the positioning portion (12), the positioning groove (11) and the positioning portion (12) are arranged along a first direction, and the rotation axis of the operating member (20) extends along a second direction, and the first direction and the second direction are arranged at an angle.

2. The pin-removing device according to claim 1, characterized in that: The positioning member (10) comprises a positioning plate (13), a first limiting plate (14) and a second limiting plate (15); the first limiting plate (14) and the second limiting plate (15) are arranged on the positioning plate (13) at intervals; the first limiting plate (14), the positioning plate (13) and the second limiting plate (15) together form the positioning groove (11).

3. The pin-removing device according to claim 2, characterized in that: The positioning member (10) further comprises a positioning cylinder, which is connected to the end of the positioning plate (13), one end of which is an open structure, and the positioning cylinder forms the positioning portion (12).

4. The pin-removing device according to claim 2, characterized in that: The first limiting plate (14) and the second limiting plate (15) are arranged on one end of the positioning plate (13) close to the positioning portion (12).

5. The pin-removing device according to claim 3, characterized in that: The other end of the positioning cylinder is provided with a hinge shaft, the operating member (20) is hinged to the positioning cylinder via the hinge shaft, and the axis of the hinge shaft coincides with the axis of the positioning cylinder.

6. The pin-removing device according to claim 1, characterized in that: The locking member (21) is slidably arranged on the operating member (20), and the locking member (21) can be moved closer to or farther from the positioning portion (12).

7. The pin-removing device according to claim 6, characterized in that: The operating member (20) comprises an operating plate (22) and a sliding sleeve (23) slidably arranged on the operating plate (22); the pin (21) is connected to the sliding sleeve (23); and the operating plate (22) is hinged to the positioning member (10).

8. The pin-removing device according to claim 7, characterized in that: The operating member (20) further includes a limiting member (24); a relief hole is provided on the sliding sleeve (23); the limiting member (24) passes through the relief hole and can abut against the operating plate (22).

9. The pin-removing device according to claim 7, characterized in that: The pinning member (21) comprises a connecting section (211) and a pinning section (212) which are connected and arranged at an angle, the connecting section (211) is connected to the sliding sleeve (23), and the pinning section (212) is parallel to the operating plate (22).

10. The pin-removing device according to claim 7, characterized in that: The operating plate (22) is provided with a weight-reducing hole (221).