Anti-deformation dismounting clamp for safety ring of brake shoe drill rod of railway locomotive

Abstract

The utility model relates to the technical field of railway locomotive brake system maintenance tools, and discloses an anti-deformation railway locomotive brake shoe drill rod safety ring dismounting clamp which comprises an inclined plane clamp head set used for fixing a safety ring needing to be dismounted, the inclined plane clamp head set comprises an inclined plane single clamp head and an inclined plane double clamp head which are oppositely arranged, and the inclined plane single clamp head is used for fixing the safety ring needing to be dismounted. A head part is arranged at the top end of the inclined-plane single-plier head, a tail part connected with the head part is arranged at the bottom end of the inclined-plane double-plier head, two head parts are symmetrically arranged at the top end of the inclined-plane double-plier head, a tail part connected with the two head parts is arranged at the bottom end of the inclined-plane double-plier head, inclined planes and bulges are arranged on the opposite side surfaces of the head parts of the inclined-plane single-plier head and the inclined-plane double-plier head, and the inclined planes and the bulges are matched to form fixing grooves. The tail parts of the inclined-plane single-plier head and the inclined-plane double-plier head are movably connected around the axis; and one of the two handles is fixedly connected with the inclined-plane single-plier head, and the other handle is fixedly connected with the inclined-plane double-plier head. The anti-deformation dismounting pliers for the brake-shoe drill rod safety ring of the railway locomotive can be used for rapidly dismounting the brake-shoe drill rod safety ring of the railway locomotive in a lossless manner.

Description

Technical Field

[0001] This utility model relates to the technical field of maintenance tools for railway locomotive braking systems, and in particular to a clamp for removing the safety ring of the brake shoe of a railway locomotive that prevents deformation. Background Technology

[0002] The safety ring for railway locomotive brake shoe pins is a critical component in the braking system used to secure the brake shoe pins, and its removal is an important part of routine maintenance. However, existing safety ring removal tools have the following significant drawbacks in practical applications, severely limiting removal efficiency and operational safety:

[0003] The existing tool has an unreasonable structural design. The non-slanted jaw structure and the geometry and direction of movement of the safety ring are poorly matched, resulting in insufficient friction between the tool and the safety ring, which easily leads to slippage. At the same time, deviations in the direction of force application can easily cause excessive deformation of the safety ring, or even structural damage, resulting in a high scrap rate. Due to the structural defects of the tool, each disassembly requires repeated adjustments to the angle and position of force application, which is time-consuming and has a low success rate, resulting in low operating efficiency and making it difficult to meet the needs of high-efficiency operations. The meshing stability between the tool and the safety ring is insufficient, and sudden slippage or dislocation can easily occur during operation, which not only threatens the safety of operators but may also cause damage to the workpiece or tool. In addition, the existing tool lacks ergonomic design, and prolonged use can easily lead to fatigue, further increasing the operational risks. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a fast and non-destructive disassembly tool for removing the safety ring of a deformation-resistant railway locomotive brake shoe. To solve the above technical problem, the technical solution proposed by this utility model is as follows:

[0005] A tool for removing the safety ring of a railway locomotive brake shoe, comprising: a set of inclined jaw heads for fixing the safety ring to be removed; the set of inclined jaw heads includes a single inclined jaw head and a double inclined jaw head arranged opposite each other; the single inclined jaw head has a head at the top and a tail connected to the head at the bottom; the double inclined jaw head has two symmetrical heads at the top and a tail connected to the two heads at the bottom; the heads of the single and double inclined jaw heads have inclined surfaces and protrusions on opposite sides, the inclined surfaces and protrusions cooperate to form a fixing groove; the tails of the single and double inclined jaw heads are movably connected around an axis.

[0006] Two handles are provided; one handle is fixedly connected to the beveled single-head clamp, and the other handle is fixedly connected to the beveled double-head clamp.

[0007] In one embodiment, the inclination angle of the inclined plane is 5-30°.

[0008] In one embodiment, the inclination angle of the inclined plane is 5-15°.

[0009] In one embodiment, the fixing groove is provided with vertical teeth, and the surface roughness Ra of the teeth in the fixing groove is ≤1.6μm.

[0010] In one embodiment, the tails of the beveled single clamp head and the beveled double clamp head are connected by a pin or hinged together to form a structure that rotates around an axis.

[0011] In one embodiment, a return spring is also included. The tail ends of the beveled single clamp head and the beveled double clamp head are symmetrically provided with positioning holes on opposite sides, and the two ends of the return spring are respectively inserted into the two positioning holes.

[0012] In one embodiment, both the beveled pliers head assembly and the handle are made of carbon steel, and the surface of the handle is covered with a TPE frosted layer with anti-slip bumps.

[0013] In one embodiment, the fixing groove is a U-shaped groove or a V-shaped groove.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: In the above-mentioned anti-deformation railway locomotive brake shoe safety ring disassembly pliers, the bevels and protrusions on the heads of the single-head and double-head bevels cooperate to form a fixing groove, forming a "three-sided enclosure" structure. In use, align the heads of the single-head and double-head bevels with the inner and outer sides of the safety ring to be disassembled, press down the handle to fully clamp the safety ring, ensuring uniform force on the safety ring during clamping. Continue applying force to push the safety ring into the bottom of the fixing groove and fix it. Maintain the downward pressure of the handle and pull the handle outward along the direction of the safety ring's movement until the safety ring detaches from the brake shoe, completing the disassembly. Using the anti-deformation railway locomotive brake shoe safety ring disassembly pliers of this application reduces the safety ring deformation rate from 40% to below 5%, significantly reducing the safety ring deformation rate, and increasing the reuse rate of the disassembled safety ring from 60% to 95%. This clamp structure supports one-handed operation, is suitable for confined spaces, and reduces the operation time from 1-3 minutes to 10-30 seconds, increasing efficiency by 6-18 times and greatly improving disassembly efficiency. Attached Figure Description

[0015] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of a deformation-resistant railway locomotive brake shoe safety ring disassembly clamp structure according to one embodiment;

[0017] Figure 2A schematic diagram of the working state of a deformation-resistant railway locomotive brake shoe safety ring disassembly tool according to one embodiment;

[0018] Reference numerals: 1: slanted single clamp head; 2: slanted double clamp head; 3: return spring; 4: handle; 5: head; 6: slanted surface; 7: protrusion; 8: fixing groove; 9: tail. Detailed Implementation

[0019] To facilitate understanding of this utility model, the following description will be more comprehensive and detailed in conjunction with the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0020] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0021] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0022] Please see Figure 1-2 One embodiment of the anti-deformation railway locomotive brake shoe safety ring disassembly clamp mainly includes: a single beveled clamp head 1, a double beveled clamp head 2, a return spring 3, a handle 4, a head 5, a bevel 6, a protrusion 7, a fixing groove 8, and a tail 9. The single beveled clamp head 1 and the double beveled clamp head 2 constitute a beveled clamp head assembly. The single beveled clamp head 1 and the double beveled clamp head 2 are arranged opposite to each other. The single beveled clamp head 1 includes a head 5 for fixing the safety ring to be disassembled and a tail 9 connected to the head 5. The double beveled clamp head 2 includes two heads 5 for fixing the safety ring to be disassembled and tail 9 connected to the two heads. The head 5 structures of the single beveled clamp head 1 and the double beveled clamp head 2 are identical, meaning the beveled clamp head assembly has three identical heads. The tails of the single beveled clamp head 1 and the double beveled clamp head 2 are movably connected, preferably by a pin, forming a rotation structure around an axis to ensure an opening angle range of 0° to 45°. The tail ends of the single-head 1 and the double-head 2 are respectively connected to two symmetrically arranged handles 4. Positioning holes are symmetrically arranged on the inner side of the tail ends of the single-head 1 and the double-head 2, and the two ends of the return spring 3 are respectively inserted into the two positioning holes.

[0023] Specifically, both the beveled single-jaw head 1 and the beveled double-jaw head 2 have beveled surfaces 6 on opposite sides of their heads 5, and a protrusion 7 is provided below the beveled surface of the head 5. The beveled surface 6 and the protrusion 7 cooperate to form a fixing groove 8, creating a "three-sided enclosure" structure. In use, the jaw diameter is consistent with the cross-sectional diameter of the safety ring. For example, in one embodiment, the safety ring has a standard diameter of 10mm (suitable for models such as JW-4 and JW-4G), so the jaw diameter is also 10mm, allowing the three heads 5 of the beveled single-jaw head 1 and the beveled double-jaw head 2 and the fixing groove 8 to engage with the surface of the safety ring.

[0024] Preferably, both the beveled pliers head assembly and the handle are made of carbon steel, and the surface of the handle is covered with a TPE frosted layer with anti-slip bumps to prevent slipping during use.

[0025] Preferably, the fixing groove 8 is a U-shaped groove or a V-shaped groove, and the fixing groove 8 is provided with vertical teeth. The surface roughness Ra of the teeth in the fixing groove 8 is ≤1.6μm, which improves the friction.

[0026] Preferably, the inclination angle of the inclined plane is 5-30°, preferably 5-15°. The inclination angle is the angle formed by the inclined plane and the horizontal direction. Using an inclination angle of 5-15° can ensure precise matching with the arc profile (radius of curvature R=5mm) of the standard safety ring and prevent slippage.

[0027] The working process of the above-mentioned anti-deformation railway locomotive brake shoe safety ring disassembly clamp is as follows: Clean the oil stains on the surface of the safety ring to ensure that the clamping surfaces of the jaws are clean. Then, hold the handle 4 with one hand, align the heads 5 of the single beveled jaw 1 and the double beveled jaw 2 with the inner and outer sides of the safety ring to be disassembled, and press down the handle 4 to make the heads 5 fully clamp the safety ring. When clamping, the safety ring is subjected to uniform force, forming a "three-sided enclosure" structure. Continue to apply force to push the safety ring into the bottom of the fixing groove 8 and fix it. Maintain the downward pressure of the handle 4, and pull the handle 4 outward along the movement direction of the safety ring. Utilize the limiting function of the fixing groove 8 to widen the gap of the safety ring to the required length, and then rotate the handle until the safety ring is disassembled from the brake shoe, completing the disassembly. After the safety ring is removed, the return spring 3 drives the single beveled jaw 1 and the double beveled jaw 2 to automatically spring back to the initial position.

[0028] This anti-deformation railway locomotive brake shoe safety ring disassembly tool utilizes a single inclined jaw 1 and a double inclined jaw 2 to apply force evenly, along with a precise limiting design in the fixing groove 8. This reduces the safety ring deformation rate from 40% to below 5%, significantly lowering the deformation rate and increasing the reusability of the disassembled safety ring from 60% to 95%. The tool's structure supports one-handed operation, making it suitable for confined spaces. The single operation time is reduced from 1-3 minutes to 10-30 seconds, increasing efficiency by 6-18 times and dramatically improving disassembly efficiency. The frosted anti-slip handle increases the friction coefficient by 60%, and the teeth in the fixing groove 8 greatly reduce the risk of slippage. Employing a high-quality carbon steel one-piece molding process, the tool's lifespan is extended by more than 1.5 times, reducing maintenance costs. The success rate is 100% (actual test data).

[0029] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A tool for disassembling the safety ring of a deformation-resistant railway locomotive brake shoe, characterized in that, include: A beveled pliers assembly is used to secure a safety ring that needs to be removed. The beveled pliers assembly includes a single beveled pliers head and a double beveled pliers head arranged opposite each other. The single beveled pliers head has a head at the top and a tail connected to the head at the bottom. The double beveled pliers head has two symmetrical heads at the top and a tail connected to the two heads at the bottom. The sides of the heads of the single beveled pliers head and the double beveled pliers head are provided with bevels and protrusions, which cooperate to form a fixing groove. The tails of the single beveled pliers head and the double beveled pliers head are movably connected around an axis. Two handles are provided; one handle is fixedly connected to the beveled single-head clamp, and the other handle is fixedly connected to the beveled double-head clamp.

2. The anti-deformation railway locomotive brake shoe safety ring disassembly tool according to claim 1, characterized in that, The inclination angle of the inclined plane is 5-30°.

3. The anti-deformation railway locomotive brake shoe safety ring disassembly tool according to claim 2, characterized in that, The inclination angle of the inclined plane is 5-15°.

4. The anti-deformation railway locomotive brake shoe safety ring disassembly tool according to claim 1, characterized in that, The fixing groove is provided with vertical teeth, and the surface roughness Ra of the teeth in the fixing groove is ≤1.6μm.

5. The anti-deformation railway locomotive brake shoe safety ring disassembly tool according to claim 1, characterized in that, The tails of the single-head and double-head beveled jaws are connected by pins or hinges to form a structure that rotates around an axis.

6. The anti-deformation railway locomotive brake shoe safety ring disassembly tool according to claim 1, characterized in that, It also includes a return spring. The tail ends of the beveled single clamp head and the beveled double clamp head are symmetrically provided with positioning holes on opposite sides, and the two ends of the return spring are respectively inserted into the two positioning holes.

7. The anti-deformation railway locomotive brake shoe safety ring disassembly tool according to claim 1, characterized in that, Both the beveled pliers head assembly and the handle are made of carbon steel. The surface of the handle is covered with a TPE frosted layer, and the surface of the frosted layer has anti-slip bumps.

8. The anti-deformation railway locomotive brake shoe safety ring disassembly tool according to claim 1, characterized in that, The fixing groove is a U-shaped groove or a V-shaped groove.

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