A tool for replacing a railway wagon coupler wear plate

Abstract

The utility model relates to railway freight car equipment technical field, concretely relates to a railway freight car coupler wear plate replacement tool, including door type support frame, hydraulic telescopic link, lifting frame and coupler wear plate assembly. Support frame passes through lower support foot, upper support foot and adjusting screw rod fixed, hydraulic telescopic link drive contains the lifting frame of chain type closed frame and lifts the coupler, and the fixed seat of wear plate is equipped with limiting rod, can be stacked and prevent falling. Its solution existing tool inconvenient, two people operation time -consuming long, pickaxe easy to slip off and so on problem, through the frame fixed, hydraulic lock and prevent falling design and improve the security, adapt to multiple vehicle models, adjust the high precision, guarantee coupler height compliance, improve the repair efficiency and security.

Description

Technical Field

[0001] This utility model relates to the field of railway freight car equipment technology, specifically to a tool for replacing the wear plate of a railway freight car coupler. Background Technology

[0002] The information disclosed in the background section of this utility model is intended only to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] As a core component connecting adjacent vehicles, the working condition of railway freight car couplers directly determines the safety and efficiency of train operation. Among these parameters, the coupler height (the vertical distance from the coupler end face to the rail surface) is crucial for ensuring proper coupling and operation of the train: Firstly, proper height matching guarantees reliable locking during coupling, avoiding the risk of decoupling due to height discrepancies; secondly, a reasonable height setting reduces longitudinal impact and lateral vibration during train operation, lowering the wear rate of key components such as wheelsets and couplers; thirdly, precise height parameters are a prerequisite for efficient transmission of traction and braking forces, directly affecting the train's acceleration performance, braking response, and handling stability.

[0004] As a crucial and easily worn component for adjusting coupler height, the coupler wear plate endures the impact of vehicle coupling and load friction over long periods. Its wear increases with accumulated operating mileage, eventually causing the coupler height to exceed the standard range. Therefore, regularly replacing the wear plate is a routine and necessary step in railway freight car maintenance.

[0005] In existing technologies, wear plate replacement and coupler height adjustment rely on a combination of tools such as hydraulic picks, wooden blocks, and steel pads. During the operation, the hook body must first be lifted with the hydraulic pick, and then the wear plate must be manually inserted or removed. Throughout this process, the hook body must be repeatedly supported with wooden blocks to maintain its height. This operating mode has low tool integration; the hydraulic pick, wooden blocks, and auxiliary pads must be carried separately, making it difficult for a single person to independently transport the tools. Furthermore, the work efficiency is low; a single replacement requires more than 5 minutes for two people working together, severely restricting vehicle turnaround efficiency in high-frequency maintenance scenarios such as marshalling yards.

[0006] With the development of railway freight towards heavy-haul and high-speed operations, the frequency and efficiency requirements for vehicle maintenance are continuously increasing. The existing operation mode, which relies on traditional tools, can no longer meet the maintenance needs of "high efficiency, safety, and intensive operation." Therefore, developing a portable, fast, and safe tool for replacing coupler wear plates has become an urgent technical problem for the industry. Utility Model Content

[0007] To address the aforementioned technical problems, this utility model proposes a tool for replacing wear plates of railway freight car couplers, aiming to solve the problems of low tool integration, inability for a single person to operate, and time-consuming operation in the existing process of replacing wear plates of railway freight car couplers.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A tool for replacing wear plates of railway freight car couplers includes a support frame for supporting a coupler support seat. A hydraulic telescopic rod is provided on the top of the support frame. The output end of the hydraulic telescopic rod is fixedly connected to a lifting frame. The lifting frame is used to lift the coupler body under the drive of the hydraulic telescopic rod.

[0010] Preferably, the support frame is a portal frame, with a lower support foot at the bottom that mates with the coupler support seat, and an upper support foot at the top that mates with the top of the coupler body.

[0011] Preferably, the upper support leg is provided with an adjustment rod.

[0012] Preferably, the lifting frame is a flexible frame, including an inverted T-shaped lifting frame, and the bottom of the lifting frame is provided with a closed frame made of chains.

[0013] Preferably, the hydraulic telescopic rod is fixedly mounted on the top of the support frame via a base.

[0014] Preferably, the coupler wear plate includes a pad, and the pad is provided with a fixing seat for fixing it on the coupler support seat.

[0015] Preferably, the fixing seat is provided with a side plate, and the side plate is provided with a set of limiting rods for limiting the position, which are used to pass through the limiting holes of the coupler support seat.

[0016] Preferably, the side plate is provided with adjustment and fixing holes opened in the vertical direction for the limiting rod to pass through.

[0017] This utility model has at least the following beneficial effects:

[0018] Compared to existing technologies, this utility model achieves independent operation by a single person through integrated design, significantly reducing the time required for each replacement operation. The combination of the portal frame and the hydraulic telescopic rod eliminates the cumbersome steps of repeated support with wooden blocks and multiple adjustments with hydraulic picks in traditional operations. Combined with the rapid positioning function of the chain-type lifting frame, it significantly shortens the operation cycle of coupler lifting and wear plate replacement, effectively improving the turnover efficiency of railway freight cars.

[0019] In this invention, the anti-detachment design of the wear plate solves the problem of detachment during operation caused by the lack of a fixed structure in traditional wear plates. This improvement reduces secondary maintenance due to loosening and detachment of the wear plate, thus lowering the operation and maintenance costs of railway freight cars. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention in use.

[0021] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the wear plate of the coupler.

[0023] The attached figures are labeled as follows:

[0024] 100. Support frame; 110. Lower support foot; 200. Hydraulic telescopic rod; 210. Base; 220. Adjusting rod; 300. Lifting frame; 400. Chain; 410. Threaded fixing assembly; 500. Coupler body; 600. Pad; 610. Fixing seat; 611. Adjusting fixing hole; 620. Limiting rod. Detailed Implementation

[0025] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Example 1

[0027] Figures 1 to 2 A tool for replacing wear plates on railway freight car couplers is presented, comprising a support frame 100 for support on a coupler support seat. A hydraulic telescopic rod 200 is mounted on the top of the support frame 100, and the output end of the hydraulic telescopic rod 200 is fixedly connected to a lifting frame 300. The lifting frame 300 is used to lift the coupler body 500 under the drive of the hydraulic telescopic rod 200. As the coupler body 500 is raised, the gap between the bottom side of the coupler body 500 and the top side of the coupler support seat increases. By replacing coupler wear plates of different thicknesses, the coupler height and inter-coupler difference can be adjusted.

[0028] The support frame 100 is a portal frame, and its more specific structure is as follows: the bottom of the support frame 100 is provided with a lower support foot 110 that cooperates with the coupler support seat, and the top of the support frame 100 is provided with an upper support foot that cooperates with the top of the coupler body 500.

[0029] The upper support foot is equipped with an adjusting rod 220, which can be a bolt or a screw, and the adjustable support is achieved through threaded engagement, that is, the support height is adjustable.

[0030] The lifting frame 300 is a flexible frame, and its specific structure is as follows: it includes an inverted T-shaped lifting frame, and the bottom of the lifting frame is provided with a closed frame composed of chains 400. In order to facilitate the chain 400 passing through the coupler, one end of the chain 400 is a detachable fixed end, and in this embodiment, a threaded fixing component 410 is used.

[0031] The hydraulic telescopic rod 200 is fixedly mounted on the top of the support frame 100 via the base 210, and the hydraulic telescopic rod 200 can specifically be a hydraulic cylinder.

[0032] The coupler wear plate, as Figure 3 As shown, its structure is as follows: it includes a pad 600, and the pad 600 is provided with a fixing seat 610 for fixing and installing on the coupler support seat.

[0033] The aforementioned coupler wear plate can be used individually or stacked for installation. It features an anti-fall-off design, ensuring that the accessory will not detach after installation. Specifically, this is achieved by the following method: the fixing base 610 is provided with a side plate, and the side plate has a set of limiting rods 620 for passing through the limiting holes of the coupler support base. Furthermore, the side plate has vertically oriented adjustment and fixing holes 611 for the limiting rods 620 to pass through.

[0034] This railway freight car coupler wear plate replacement tool solves the problems of existing tools being inconvenient to carry, time-consuming operation by two people, and easy slippage of oil picks. It improves safety through frame fixing, hydraulic locking and anti-fall-off design, is compatible with multiple car models, has high adjustment precision, ensures the coupler height compliance, and improves maintenance efficiency and safety.

[0035] Example 2

[0036] A tool for replacing coupler wear plates on railway freight cars includes a support frame 100, a hydraulic telescopic rod 200, a lifting frame 300, and a coupler wear plate assembly, with the specific structure as follows:

[0037] The support frame 100 adopts a portal frame structure, with symmetrical lower support feet 110 at its bottom that are adapted to the coupler support seat, and upper support feet at both ends of the top crossbeam that fit the top contour of the coupler body 500. An adjusting screw is installed through the upper support foot, and the support height can be infinitely adjusted through the threaded engagement, which can adapt to the differences in coupler structure of different models of freight cars.

[0038] The hydraulic telescopic rod 200 is vertically fixed to the top center of the support frame 100 via a rigid base 210. It adopts a double-acting hydraulic cylinder, and its piston rod end is rigidly connected to the lifting frame 300, which can provide a stable axial lifting force.

[0039] The lifting frame 300 is a flexible load-bearing structure, including an inverted T-shaped lifting frame and a chain 400-type enclosed frame: the top of the lifting frame is hinged to the piston rod of the hydraulic telescopic rod 200, and the bottom is connected to the enclosed frame surrounded by a high-strength alloy chain 400 through a pin. The length of the chain 400 can be adjusted to fit different sizes of the coupler body 500, achieving flexible wrapping lifting. The coupler wear plate assembly includes a pad 600 and an integrated fixed seat 610: the pad 600 can be made of 65Mn spring steel, and the fixed seat 610 has symmetrical vertical side plates on both sides. Multiple sets of adjustment and fixing holes 611 are opened on the side plates along the vertical direction, and a sliding limit rod 620 is built in. The diameter of the limit rod 620 matches the preset limit hole of the coupler support seat. The wear plate is positioned and locked by different insertion heights. When used in combination, the limit rods 620 of adjacent plates are staggered to prevent falling off.

[0040] The working process of the railway freight car coupler wear plate replacement tool of this utility model is as follows:

[0041] Tool positioning: Place the support frame 100 across both sides of the coupler, so that the lower support foot 110 is locked into the bottom step of the coupler support seat. Rotate the adjusting screw of the upper support foot until its top end is reliably in contact with the top of the coupler body 500, thus completing the initial rigid positioning of the frame.

[0042] Preparation for lifting: Wrap the chain 400 of the lifting frame 300 around the lower part of the coupler body 500, and tighten the chain 400 by adjusting the buckle to make the frame fit the hook body.

[0043] Coupler lifting: Operate the hydraulic pump to make the hydraulic telescopic rod 200 drive the lifting frame 300 to slowly lift the coupler body 500 until the bottom of the coupler and the top surface of the support seat form the required gap. At this time, the lifting state is maintained by the hydraulic locking valve.

[0044] Wear plate replacement: Pull out the limiting rod 620 of the original worn wear plate, take out the old plate, and select a new wear plate, either single or stacked, according to the height adjustment requirements. Insert it into the gap at the bottom of the coupler, so that the side plate of the fixing seat 610 fits against the side of the support seat. Insert the limiting rod 620 into the adjustment fixing hole 611 and lock it.

[0045] Reset inspection: Slowly release the hydraulic locking valve so that the coupler body 500 falls smoothly onto the new wear plate. Remove the lifting frame 300 and the support frame 100. Measure the coupler height and the inter-coupler difference. After confirming that it is qualified, the operation is completed.

[0046] The entire operation can be completed by a single person, taking less than 90 seconds, and the risk of slippage caused by traditional hydraulic jacking is eliminated through mechanical locking and frame support.

[0047] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this utility model, if present, are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tool for replacing wear plates on railway freight car couplers, characterized in that: It includes a support frame for supporting the coupler support seat, and a hydraulic telescopic rod is provided on the top of the support frame. The output end of the hydraulic telescopic rod is fixedly connected to the lifting frame, and the lifting frame is used to lift the coupler body under the drive of the hydraulic telescopic rod.

2. The railway freight car coupler wear plate replacement tool as described in claim 1, characterized in that: The support frame is a portal frame, with a lower support foot at the bottom that mates with the coupler support seat, and an upper support foot at the top that mates with the top of the coupler body.

3. The railway freight car coupler wear plate replacement tool as described in claim 2, characterized in that: The upper support leg is equipped with an adjustment rod.

4. The railway freight car coupler wear plate replacement tool as described in claim 1, characterized in that: The lifting frame is a flexible frame, including an inverted T-shaped lifting frame, and the bottom of the lifting frame is provided with a closed frame made of chains.

5. The railway freight car coupler wear plate replacement tool as described in claim 1, characterized in that: The hydraulic telescopic rod is fixedly mounted on the top of the support frame via a base.

6. The railway freight car coupler wear plate replacement tool as described in claim 1, characterized in that: The coupler wear plate includes a pad, and the pad is provided with a fixing seat for fixing it on the coupler support seat.

7. The railway freight car coupler wear plate replacement tool as described in claim 6, characterized in that: The fixed base is provided with a side plate, and the side plate is provided with a set of limiting rods for limiting the position, which are used to pass through the limiting holes of the coupler support base.

8. The railway freight car coupler wear plate replacement tool as described in claim 7, characterized in that: The side plate is provided with adjustment and fixing holes that are opened vertically for the limiting rod to pass through.

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