Assembly tool for anti-side-rolling connecting rod rotation-stopping gasket of motor train unit

Abstract

The utility model discloses a motor train unit anti-side-rolling connecting rod rotation-stopping gasket assembling tool which is characterized by comprising a hammer head module which comprises a hammer head main body, an impact main body, a slidable fixing block and a detachable tail end; one end of the hammer head body is connected with the impact body, and the other end of the hammer head body is connected with the detachable tail end. The detachable tail end is a right trapezoid cube, and the end, not connected with the hammer head body, of the detachable tail end is concaved inwards to form a bent groove. The slidable fixing block is arranged at the position, close to the middle, of the lower portion of the hammer head body. One side, close to the hammer head main body, of the part, protruding below the hammer head main body, of the impact main body is of a right-angle structure, and the right-angle structure and the slidable fixing block form a concave rectangular space, namely a rotation stopping clamping groove; and one end of the handle is fixedly connected with the hammer head module. The tool carrying amount in the field operation process is reduced, the assembly time is saved, and the installation speed of the anti-side-rolling connecting rod rotation stopping gasket in the motor train unit maintenance operation is increased.

Description

Technical Field

[0001] This utility model relates to the technical field of railway vehicle maintenance tools, and in particular to a tool specifically designed for use in EMU maintenance workshops for assembling anti-roll connecting rod anti-rotation shims. Background Technology

[0002] In the railway transportation sector, the safe operation of high-speed trains is always of paramount importance. As a key component ensuring the operational stability of high-speed trains, the anti-roll link undergoes a comprehensive disassembly and overhaul during advanced maintenance to ensure its performance. During the installation process after maintenance, the length of the anti-roll link must be meticulously adjusted according to the precise fit between the car body and the bogie. Once the length adjustment is correct, to prevent the link adjusting screw from loosening, a strict torque application must be performed, and anti-rotation washers are used to secure the lock nut to prevent loosening.

[0003] However, in the actual maintenance workshop environment, many thorny problems arise. On the one hand, the working space is extremely limited, which greatly inconveniences the operation; on the other hand, the anti-rotation shims used are relatively large, making bending and tightening operations in a limited space extremely difficult. At present, the common assembly method is to first bend the anti-rotation shims with an adjustable wrench, and then directly tighten them with a hammer.

[0004] This traditional method of operation has a series of significant problems. From the perspective of tool applicability, adjustable wrenches and hammers, as general-purpose tools, cannot be used efficiently for assembling anti-rotation washers. Adjustable wrenches are difficult to control in terms of angle and force when bending, resulting in poor bending of the anti-rotation washer and failing to meet the requirement of a tight fit with the bolt. When directly hammering, the limited working space makes it easy to strike inaccurately, which not only fails to effectively tighten the anti-rotation washer but may also damage surrounding components.

[0005] From an operational perspective, this method is cumbersome and complex, requiring multiple tool switching and precise operations, which greatly reduces assembly efficiency and thus seriously affects the maintenance progress of the entire EMU. Moreover, due to the inaccuracy of the operation, it is impossible to ensure that the anti-rotation shims and bolt surfaces are tightly fitted, which greatly reduces the anti-loosening effect and leaves a potential risk that cannot be ignored for the subsequent operational safety of the EMU. Utility Model Content

[0006] Based on the problems existing in the current technology, there is an urgent need for a tool specifically designed for assembling anti-roll connecting rod anti-rotation shims. This tool should fully consider the limited space in the maintenance workshop, have a convenient operating method, and be able to accurately bend and tighten the anti-rotation shims, improving assembly efficiency and ensuring a tight fit between the anti-rotation shims and bolts, thereby effectively improving the anti-loosening effect and ensuring the safe operation of the high-speed train.

[0007] To achieve the above objectives, a tool for assembling anti-roll linkage anti-rotation shims in high-speed trains is provided, comprising:

[0008] The hammerhead module includes a hammerhead body, an impact body, a slidable fixing block, and a detachable tail end. One end of the hammerhead body is connected to the impact body, and the other end is connected to the detachable tail end. The detachable tail end is a right-angled trapezoidal cube, with the end not connected to the hammerhead body recessed to form a bending groove. The slidable fixing block is located below the hammerhead body near the center. The portion of the impact body protruding below the hammerhead body, near the hammerhead body, has a right-angled structure, forming a concave rectangular space with the outer surface of the slidable fixing block—this is the stop-rotation slot.

[0009] The handle is fixedly connected at one end to the hammer head module.

[0010] Furthermore, on the side of the impact body not connected to the hammer head body, its two corners are curved surfaces with outward curvature.

[0011] Furthermore, the width of the impact body is greater than the width of the hammer head body.

[0012] Furthermore, the width of the internal space of the anti-rotation slot is no more than 27mm.

[0013] Furthermore, the hammer module is also provided with a disassembly button, which, when pressed, releases the connecting clip between the detachable tail end and the hammer body.

[0014] Furthermore, the bending groove has various specifications, and the specifications of the bending groove on different detachable tail ends are different.

[0015] Furthermore, the slidable fixing block includes: a cube, an insert piece, a first fixing bolt, and a second fixing bolt; the insert piece is disposed at one end of the cube, and its end not connected to the cube is inserted into a groove near the center of the lower part of the hammer head body; the first fixing bolt and the second fixing bolt contact the insert piece through bolt holes on one side of the hammer head body.

[0016] Furthermore, the handle also includes an anti-slip rubber sleeve, a fixing ring, and a strap; the anti-slip rubber sleeve is arranged around the lower center of the handle, and a fixing ring is arranged on one side of its bottom, with the fixing ring connected to the strap.

[0017] Furthermore, the anti-slip rubber sleeve is at least 8cm long, has a certain texture on its surface, and is made of an elastic material.

[0018] Furthermore, the handle has an elliptical cylindrical structure with a length between 140mm and 160mm.

[0019] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0020] (1) The assembly tool for anti-roll linkage anti-rotation shims of this utility model can quickly and accurately fold the anti-rotation shims through a specially designed open bending bayonet, and then use a special hammer of a certain length to hammer them tight. Compared with the traditional method of using an adjustable wrench to bend and then hammering, the assembly tool of this patent has a smooth and efficient process, which greatly saves assembly time, increases the installation speed of anti-roll linkage anti-rotation shims in EMU maintenance operations, and thus speeds up the overall maintenance progress.

[0021] (2) The tool for assembling anti-roll connecting rod anti-rotation shims of this utility model reduces the amount of tools carried during on-site operations through integrated design, reduces the risk of losing tools, and avoids safety accidents caused by tools being left in key parts of the EMU. Attached Figure Description

[0022] Figure 1 This is an overall drawing of an anti-roll linkage anti-rotation washer assembly tool according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the hammer head module according to an embodiment of the present utility model (the handle is not shown to clearly illustrate the main structural features);

[0024] Figure 3 This is a schematic diagram of the sliding fixing block and bolt assembly in an embodiment of the present invention;

[0025] Figure 4 This is an enlarged view of node A in the schematic diagram of the sliding fixed block of this utility model embodiment;

[0026] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-bending groove, 2-hammer head module, 21-impact body, 22-hammer head body, 23-sliding fixing block, 231-cubic block, 232-insertion piece, 233-first fixing bolt, 234-second fixing bolt, 24-detachable tail end, 25-disassembly button, 26-slide groove, 3-anti-rotation slot, 4-handle, 41-anti-slip rubber sleeve, 42-fixing ring, 43-strap. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1

[0029] Please refer to Figure 1 This embodiment 1 provides an assembly tool for anti-roll linkage anti-rotation shims in high-speed trains, characterized in that it includes:

[0030] Hammer head module 2 includes the following specific structures:

[0031] Impact Body 21: Made of high-strength alloy steel to ensure excellent wear resistance and impact resistance during frequent impact operations. Its width is greater than that of the hammer body 22, and the two are precisely aligned in the middle. The two corners on the side not connected to the hammer body 22 are designed with outward curved surfaces. This unique curved surface design reduces the risk of interference with surrounding components when operating in a confined space, and also helps operators better guide the impact direction when applying force, allowing the force to be more concentrated on the anti-rotation pad.

[0032] Hammer head body 22: As a key part connecting the impact body 21 and other components, its shape is optimized to provide stable structural support for the overall tool. It connects to the impact body 21 at one end and the detachable tail end 24 at the other end, playing a connecting role in the entire hammer head module 2.

[0033] Sliding fixing block 23: Located below the hammer body 22 near the center, it is made of the same high-strength alloy steel as the hammer body 22 and is firmly connected to the hammer body 22 through precision machining. Its main function is to form an anti-rotation groove 3 together with the right-angle structure of the protruding part of the impact body 21 below the hammer body 22 near the hammer body 22. In some embodiments, the width of the sliding fixing block is slightly larger than the width of the handle 4, that is, the sliding fixing block 23 is located between the hammer body 22 and the handle 4, and the upper end of the handle 4 is directly fixedly connected to the sliding fixing block 23.

[0034] Please refer to Figures 2-4In some other preferred embodiments, the slidable fixing block 23 includes: a cube block 231, an insert piece 232, a first fixing bolt 233, and a second fixing bolt 234. The insert piece 232 is disposed at one end of the cube block 231, with its end not connected to the cube block 231 inserted into a groove 26 near the center of the hammer body 22. The first fixing bolt 233 and the second fixing bolt 234 contact the insert piece 232 through bolt holes on one side of the hammer body 22. The slidable fixing block 23 is inserted into the groove 26 below the hammer body 22 via the insert piece 232. The insert piece is tightened or loosened by rotating the first fixing bolt 233 and the second fixing bolt 234 (at least two bolts are provided to make the insert piece more stable when tightened and to allow for a larger sliding range). In the loosened state, the cube block 231 can slide below the hammer body 22 to adjust the internal space of the anti-rotation slot 3 to meet the needs of various bolt specifications. The cube 231 is fixed by tightening the first fixing bolt 233 and the second fixing bolt 234.

[0035] The detachable tail end 24 is shaped like a right-angled trapezoidal cube. This design facilitates connection to the hammer body 22 and provides good grip in situations with limited operating space. The end not connected to the hammer body 22 is recessed to form a bending groove 1, which comes in various sizes to accommodate different sized circular anti-rotation washers. The detachable tail end 24 is connected to the hammer body 22 via a connecting clip. The hammer module 2 also features a disassembly button 25. Pressing the disassembly button 25 releases the connecting clip, allowing the detachable tail end 24 to easily slide away from the hammer body 22. This facilitates the replacement of different sizes of detachable tail ends 24 to meet various operational needs.

[0036] 2. Handle 4, including the following specific structures:

[0037] Anti-slip rubber sleeve 41: Applied around the lower center of the handle 4, with a length of at least 8cm. Its surface features a carefully designed texture and is made of highly elastic rubber. This material not only provides a comfortable grip but also maintains excellent anti-slip performance even when the operator's hands are sweaty or in a wet environment, ensuring the stability and safety of the tool during use. It also provides some shock absorption in the event of an impact, reducing user fatigue.

[0038] Fixed ring 42: Securely mounted on one side of the bottom of the handle 4, made of high-strength metal, with sufficient strength to withstand the tension that the strap 43 may exert during use. Its main function is to connect the strap 43, providing the operator with an optional tool securing method.

[0039] Strap 43: The length is flexibly adjustable between 20cm and 40cm, and it is made of high-strength, wear-resistant nylon material. Operators can easily adjust the length of strap 43 according to their wrist size or actual operating habits, and tie the tool to their wrist or other parts of their body to effectively prevent the tool from accidentally slipping during operation, avoiding equipment damage or personal injury caused by the tool falling.

[0040] Handle 4 Main Body: The overall structure is an elliptical cylinder, with a length between 140mm and 160mm. This shape and length design fully considers the principles of ergonomics, allowing operators to hold it more comfortably, exert force more naturally, and reduce hand fatigue during long-term operation.

[0041] This embodiment 1 provides a tool for assembling anti-roll linkage anti-rotation shims in high-speed trains. The specific usage method is as follows:

[0042] (1) Preparatory work

[0043] Before starting the assembly work, the operator needs to select a suitable detachable end 24 based on the specific dimensions of the circular anti-rotation washer to be assembled. By observing parameters such as the diameter and thickness of the anti-rotation washer, and comparing the specifications of the bending groove 1 on different detachable end 24, it is ensured that the two can fit tightly. For example, for anti-rotation washer with a smaller diameter, a detachable end 24 with a relatively smaller bending groove 1 should be selected; for anti-rotation washer with a larger thickness, a detachable end 24 with a suitable bending groove 1 depth should be selected. After selection, the selected detachable end 24 should be securely connected to the hammer body 22 using the connecting buckle to ensure that it will not loosen during subsequent operations. At the same time, the operator can adjust the length of the strap 43 according to their own needs, pass it through the fixing ring 42 and tie it on their wrist, completing the pre-operation preparations.

[0044] (2) Length adjustment and card slot positioning

[0045] After adjusting the length of the anti-roll linkage, the operator first aligns the anti-rotation slot 3 with the bolt position. The anti-rotation slot 3 is formed by the right-angled structure of the protruding part of the impact body 21 below the hammer body 22 near the side of the hammer body 22, together with the sliding fixing block 23, creating a concave rectangular space. The operator needs to carefully observe and manually fine-tune the anti-rotation slot 3 to precisely lock onto the key positions around the bolt and related to the anti-rotation washer, providing a stable foundation for subsequent operations. In this step, the precise positioning of the anti-rotation slot 3 is crucial, as it determines the accuracy and stability of subsequent operations.

[0046] (3) Tightening the nut

[0047] After the anti-rotation slot 3 is securely engaged in its position, the operator uses a torque wrench to tighten the locking nut below. During this process, the anti-rotation slot 3 continues to provide fixation, preventing the bolt or surrounding components from shifting when tightening the nut, ensuring that the tightening operation can be completed smoothly and achieve the specified torque standard.

[0048] (4) Bending of anti-rotation shims

[0049] After tightening the nut, the operator brings the bending groove 1 on the detachable end 24 into close contact with the anti-rotation washer. Based on the actual size of the anti-rotation washer, select a suitable detachable end 24 with a bending groove 1 and apply even upward force, bending the anti-rotation washer using the bending groove 1. During the application of force, the operator must carefully observe the bending angle of the anti-rotation washer to ensure it meets assembly requirements. Generally, the anti-rotation washer should be bent to approximately 90 degrees with the bolt mounting plane to ensure a tight fit with the bolt surface later. Simultaneously, due to the excellent anti-slip performance of the anti-slip sleeve 41, the operator does not need to worry about the tool slipping during the application of force, allowing them to focus more on operational accuracy.

[0050] (5) Hammering to fix

[0051] After bending, the bent anti-rotation washer is hammered tight using hammer module 2. The operator holds handle 4 and uses the impact body 21 of hammer module 2 to hammer the anti-rotation washer. The unique design of the impact body 21 allows for better force application within a limited space, and the curved surfaces at both corners help guide the direction of the hammering force, concentrating the force on the anti-rotation washer and thus firmly hammering it against the bolt surface. During hammering, the operator must control the hammering force and frequency, generally using moderate force and a uniform frequency to ensure a tight fit between the anti-rotation washer and the bolt surface, achieving a good anti-loosening effect. Simultaneously, because the length of handle 4 is ergonomically designed, the operator can easily control the swing amplitude and force of the tool during hammering, improving the accuracy and efficiency of the operation.

[0052] (6) Tool adjustment and storage

[0053] If, during operation, it is necessary to replace the circular anti-rotation washer with one of different specifications, or if the bending groove 1 on the currently used detachable end 24 is found to be no longer suitable, the operator can press the disassembly button 25 on the hammer head module 2 to loosen the connecting clip between the detachable end 24 and the hammer head body 22. Then, the detachable end 24 can be removed by sliding and replaced with a suitable detachable end 24. The above steps can then be repeated. After the operation is completed, the operator can properly store the tools, loosen the strap 43, and place the tools in the designated tool storage location for future use.

[0054] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool for assembling anti-roll link stop washers for a railcar, the tool comprising: The utility model relates to a hammer head module (2) and a handle (4), the hammer head module (2) comprises a hammer head body (22), a striking body (21), a slidable fixed block (23) and a detachable tail end (24), one end of the hammer head body (22) is connected with the striking body (21), the other end is connected with the detachable tail end (24), the detachable tail end (24) is a right-angled trapezoidal cuboid, the end not connected with the hammer head body (22) is concave to form a bending groove (1), the slidable fixed block (23) is arranged below the hammer head body (22) near the middle position, the part of the striking body (21) protruding below the hammer head body (22) is a right-angled structure near one side of the hammer head body (22), and the outer side of the slidable fixed block (23) forms a concave rectangular space, i.e. a rotation-stopping clamping groove (3), one end of the handle (4) is fixedly connected with the hammer head module (2). The two corners of the side of the striking body (21) not connected with the hammer head body (22) are curved surfaces with outward curvature. The width of the striking body (21) is greater than the width of the hammer head body (22).

2. The tool for assembling the anti-roll bar link pad of the motor train unit according to claim 1, characterized in that: The internal space width of the rotation-stopping clamping groove (3) is not greater than 27mm.

3. The tool for assembling the anti-roll bar link pad of the motor train unit according to claim 2, characterized in that: The hammer head module (2) is further provided with a dismounting button (25), which releases the connecting buckle between the detachable tail end (24) and the hammer head body (22) when pressed.

4. The tool for assembling anti-roll bar link pad of a railcar according to claim 1, wherein: The bending groove (1) has multiple specifications, and the specifications of the bending grooves (1) on different detachable tail ends (24) are different.

5. The tool for assembling anti-roll bar link pad of a railcar according to claim 1, wherein: The slidable fixed block (23) comprises a cubic block (231), an insertion piece (232), a first fixing bolt (233) and a second fixing bolt (234), the insertion piece (232) is arranged at one end of the cubic block (231), the end not connected with the cubic block (231) is inserted into a sliding groove (26) below the hammer head body (22) near the middle position, and the first fixing bolt (233) and the second fixing bolt (234) are in contact with the insertion piece (232) through bolt holes on one side of the hammer head body (22).

6. The tool for assembling anti-roll bar link pad of a railcar according to claim 1, wherein: The handle (4) further comprises an antiskid rubber sleeve (41), a fixed ring (42) and a bandage (43), the antiskid rubber sleeve (41) is arranged around the middle lower part of the handle (4), the fixed ring (42) is arranged on one side of the bottom of the handle (4), and the fixed ring (42) is connected with the bandage (43).

7. The tool for assembling anti-roll bar link pad of a railcar according to claim 1, wherein: The length of the antiskid rubber sleeve (41) is not less than 8cm, the surface of the antiskid rubber sleeve (41) has texture, and the antiskid rubber sleeve (41) is made of elastic material.

8. The tool for assembling anti-roll bar link pad of a railcar according to claim 1, wherein: The handle (4) is an elliptical cylinder structure, and the length of the handle (4) is between 140mm and 160mm.

9. The tool for assembling anti-roll bar link pad of claim 8, wherein: ​ 10. The tool for assembling anti-roll bar link pad of claim 8, wherein: ​

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