Cotter pin puller for motor train unit

Abstract

The utility model discloses a motor train unit cotter pin puller, which belongs to the technical field of cotter pin pulling, and comprises a rod body and a cotter pin body, the outer side of the rod body is movably sleeved with a hammer block, the inside of a hexagon nut is in threaded connection with a bolt, a connecting iron chain is arranged in a connecting ring in a penetrating manner, and the connecting iron chain is in threaded connection with the rod body. Two sets of hooks are arranged at the other end of the connecting iron chain in a penetrating mode and both inserted into the cotter pin body. In the later period, two sets of hooks are inserted into connecting openings in the cotter pin body, a worker grasps a protective sleeve on the outer side of a holding rod with one hand, so that the connecting iron chain, the rod body and the cotter pin body are in a horizontal state, the hammer block is shifted with the other hand, and the hammer block rapidly moves towards the holding rod from the direction of a hexagon nut; compared with pure manual drawing, physical output is reduced, the operation fatigue is reduced, convenience and rapidness are achieved, and the working efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of EMU split pin puller, belong to split pin pulling technical field. BACKGROUND

[0002] Split pin is a common mechanical fastener, mainly used for: anti-loose positioning: prevent bolt, nut, shaft end fastener etc. from loosening under vibration or impact, by inserting pin hole, tail part is broken, mechanical interlocking is formed, ensure the connection reliability of key components (such as bogie, suspension device, brake system etc.), in EMU overhaul operation, split pin puller is a tool specially used for safe, efficient disassembly split pin.

[0003] Through search, the patent with Chinese patent publication No. CN221891834U discloses a kind of EMU brake pad puller, the patent in the operation safety, simple, fast, can effectively avoid the damage to brake disc, but in EMU overhaul operation, if simply rely on operating personnel manpower to directly pull and rotate operation (not use special tool) to brake pad, repeatedly pulling with force can lead to operating personnel hand, wrist fatigue or strain, long-term influence occupational health, manual operation is not only low efficiency and easy to fatigue. UTILITY MODEL CONTENT

[0004] The utility model aims at the deficiency of prior art, provide a kind of EMU split pin puller, to reach the inertia force of hammering is used to pull the split pin body of EMU, reduce physical consumption than pure manpower pulling, reduce operation fatigue, it is convenient and fast, effectively improve the purpose of work efficiency.

[0005] A kind of EMU split pin puller, including stem and split pin body, the outer side of the stem movably covers hammer block, one end of the stem is fixedly provided with hexagon nut, the internal thread of the hexagon nut is connected with bolt, one end of the bolt is fixedly provided with connecting ring, the internal penetration of the connecting ring is provided with connecting iron chain, the other end of the connecting iron chain is provided with two groups of hooks, one end of two groups of hooks is slightly hooked, two groups of hooks are inserted into split pin body.

[0006] Preferably, the stem is made of iron material, four groups of arc grooves are formed on the outer side of the stem.

[0007] Preferably, a plurality of groups of balls are rotatably arranged in the hammer block in an embedded manner, the bottom end of the ball rolls and contacts the arc groove.

[0008] Preferably, a threaded rod is arranged at the other end of the stem, and a handgrip rod is arranged on the outer side of the threaded rod.

[0009] Preferably, the inside of the handgrip is provided with a threaded hole, and the threaded hole is threadedly connected with the threaded rod.

[0010] Preferably, the outside of the handgrip is provided with a protective sleeve made of rubber.

[0011] Beneficial effects:

[0012] When the opener body of the motor train unit needs to be pulled out later, the two hooks are inserted into the connecting openings in the opener body, one hand of the worker holds the protective sleeve on the outside of the handgrip, the connecting iron chain and the rod body are in a horizontal state with the opener body, the other hand moves the hammer block from the hexagonal nut to the handgrip, and the handgrip is hammered, so that the opener body of the motor train unit is pulled out by using the hammering inertia force, the physical consumption is reduced, the operation fatigue is reduced, it is convenient and fast, and the work efficiency is effectively improved.

[0013] The inner embedded rotatable ball in the hammer block is in rolling contact with the arc-shaped groove on the outside of the rod body, the linear motion of the hammer block is guided by the cooperation of the arc-shaped groove and the ball, the friction is reduced, the sliding friction is converted into rolling friction when the hammer block rolls in the arc-shaped groove, and the hammering fluency is improved.

[0014] The threaded rod at one end of the rod body is threadedly connected with the threaded hole in the inside of the handgrip, the detachable assembly of the handgrip and the rod body is realized, the hexagonal nut provides a threaded assembly space for the bolt, the connecting iron chain is quickly disassembled later, the size of the puller is reduced, and the puller is convenient to carry or replace. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a connecting iron chain structure schematic view of the utility model;

[0017] Figure 3 It is a hook structure schematic view of the utility model;

[0018] Figure 4 It is an explosion structure schematic view of the handgrip and the rod body of the utility model;

[0019] Figure 5 It is a rolling contact structure schematic view of the ball and the arc-shaped groove of the utility model.

[0020] In the figure: 1, rod body; 2, arc-shaped groove; 3, threaded rod; 4, hammer block; 5, ball; 6, hand holding rod; 7, threaded hole; 8, protective sleeve; 9, hexagonal nut; 10, bolt; 11, connecting ring; 12, connecting iron chain; 13, hook; 14, split pin body. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-5 A split pin extractor of a motor train unit is shown in the figure.

[0023] The rod body 1 is movably sleeved with the hammer block 4 on the outer side, one end of the rod body 1 is fixedly provided with the hexagonal nut 9, the inside of the hexagonal nut 9 is threadedly connected with the bolt 10, one end of the bolt 10 is fixedly provided with the connecting ring 11, the inside of the connecting ring 11 is penetratively provided with the connecting iron chain 12, the other end of the connecting iron chain 12 is penetratively provided with two groups of hooks 13, one end of the two groups of hooks 13 is slightly hooked, and the two groups of hooks 13 are inserted into the split pin body 14.

[0024] The rod body 1 (iron) is used as a main force receiving rod for transmitting the hammering force to linearly guide the sliding of the hammer block 4, the hexagonal nut 9 at one end of the rod body 1 is used for providing a threaded assembly space for the bolt 10, facilitating the quick disassembly and assembly of the connecting iron chain 12 in the later stage, reducing the size of the extractor, facilitating the carrying or replacement, the connecting ring 11 at one end of the bolt 10 is used for connecting with the connecting iron chain 12, the bolt 10 is used as a tension force transmission medium for transmitting the hammering force to the connecting iron chain 12, the two groups of hooks 13 at one end of the connecting iron chain 12 are used for suspending and connecting the connecting port of the split pin body 14, the slight hook design of the hooks 13 ensures the tight grip of the split pin body 14, when the split pin body 14 of the motor train unit needs to be extracted in the later stage, the two groups of hooks 13 are inserted into the connecting port inside the split pin body 14, one hand of the worker holds the protective sleeve 8 outside the hand holding rod 6, so that the connecting iron chain 12 and the rod body 1 are in a horizontal state with the split pin body 14, the other hand moves the hammer block 4 to move from the direction of the hexagonal nut 9 to the hand holding rod 6, and hammers the hand holding rod 6, so as to extract the split pin body 14 of the motor train unit by using the hammering inertia force, which reduces the physical consumption and the operation fatigue degree compared with the pure manual pulling, is convenient and fast, and effectively improves the work efficiency.

[0025] Please refer to Figures 1-5As shown in the figure, a motor train open pin extractor;

[0026] The rod body 1 is made of iron material, four groups of arc grooves 2 are arranged on the outer side of the rod body 1, and a plurality of groups of rolling balls 5 are rotatably arranged in the hammer block 4.

[0027] The rolling balls 5 in the hammer block 4 are rotatably contacted with the arc grooves 2 on the outer side of the rod body 1, the linear motion of the hammer block 4 is guided by the cooperation of the arc grooves 2 and the rolling balls 5, the friction is reduced, the rolling friction is converted from the sliding friction when the hammer block 4 rolls in the arc grooves 2, and the hammering fluency is improved.

[0028] Please refer to Figures 1-5 As shown in the figure, a motor train open pin extractor;

[0029] The other end of the rod body 1 is provided with a threaded rod 3, the outer side of the threaded rod 3 is provided with a hand holding rod 6, a threaded hole 7 is threadedly arranged in the inner side of the hand holding rod 6, the threaded hole 7 is threadedly connected with the threaded rod 3, and the outer side of the hand holding rod 6 is provided with a protective sleeve 8 made of rubber material.

[0030] The threaded rod 3 at one end of the rod body 1 is threadedly connected with the threaded hole 7 arranged in the inner side of the hand holding rod 6, so that the hand holding rod 6 and the rod body 1 can be detachably assembled, the rubber protective sleeve 8 is anti-skid, hand slipping is avoided, and the modular design (such as the hand holding rod 6 can be detached) facilitates replacement of damaged parts.

[0031] It is apparent for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rail-borne vehicle split pin extractor comprising a shaft (1) and a split pin body (14), characterized in that: The outer side of the rod body (1) is movably sleeved with a hammer block (4), one end of the rod body (1) is fixedly provided with a hexagon nut (9), the inside of the hexagon nut (9) is threadedly connected with a bolt (10), one end of the bolt (10) is fixedly provided with a connecting ring (11), the inside of the connecting ring (11) is penetrated through with a connecting iron chain (12), the other end of the connecting iron chain (12) is penetrated through with two groups of hooks (13), one end of the two groups of hooks (13) is slightly hooked, and the two groups of hooks (13) are inserted into an open pin body (14).

2. The EMU cotter key extractor of claim 1, wherein: The rod body (1) is made of iron material, and the outer side of the rod body (1) is provided with four groups of arc-shaped grooves (2).

3. The EMU cotter key extractor of claim 1, wherein: A plurality of groups of balls (5) are rotatably embedded in the inside of the hammer block (4), and the bottom end of the ball (5) is in rolling contact with the arc-shaped groove (2).

4. The EMU cotter key extractor of claim 1, wherein: The other end of the rod body (1) is provided with a threaded rod (3), and the outer side of the threaded rod (3) is provided with a hand holding rod (6).

5. The EMU cotter key extractor of claim 4, wherein: The inside of the hand holding rod (6) is threadedly provided with a threaded hole (7), and the threaded hole (7) is threadedly connected with the threaded rod (3).

6. The EMU cotter key extractor of claim 5, wherein: The outer side of the hand holding rod (6) is provided with a protective sleeve (8), and the protective sleeve (8) is made of rubber material.

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