A stay cable seat unloading auxiliary device

Abstract

The utility model belongs to the field of bearing cable seat unloading, concretely relates to a kind of bearing cable seat unloading auxiliary device, to solve the problem of time and energy consumption in the process of disassembling bearing cable seat of prior art, personnel safety risk exists.The utility model includes: support device, with wrist arm joint, the pry plate for prying bearing cable is fixed in the both ends of support device;The support device is fixed with handle, and the handle is used for being held by user.The utility model can make operating personnel only need to exert small force to complete unloading and reset operation, traditional manual lifting when thread slippage risk, reduce muscle strain and high-altitude fall probability, single person can quickly complete whole-process operation, significantly shorten maintenance time window.

Description

Technical Field

[0001] This utility model belongs to the field of load-bearing cable seat unloading, and specifically relates to a load-bearing cable seat unloading auxiliary device. Background Technology

[0002] In the field of overhead contact line maintenance for electrified railways, replacing cantilever sleeve seats is a routine but extremely demanding operation. The core step in this operation is to first unload the catenary and contact wire, and then precisely reposition them after the sleeve seat has been replaced. The load that must be borne during unloading and repositioning is considerable, with the total weight consisting of the catenary load, contact wire load, elastic sling weight, and dropper weight. Taking a typical 50-meter working section as an example, the combined weight of the catenary (approximately 1.065 kg / m), contact wire (approximately 1.334 kg / m), elastic sling (approximately 10 kg), and dropper (approximately 5 kg) reaches nearly 130 kg (approximately 129.95 kg). This means that during unloading and repositioning operations, workers must overcome such a massive weight.

[0003] Currently, this arduous load unloading and repositioning work is entirely manual, typically requiring at least two physically strong operators working together. During the operation, operators must stand on top of the ladder truck (approximately 5100mm high), facing the catenary cable located about 1700mm to 1800mm overhead (the catenary cable height is approximately 6900mm minus the ladder truck height). Under these conditions, each operator must carry an average of approximately 65kg (total weight 129.95kg / 2 people) and maintain a lifting or prying posture for extended periods within a confined space. This places exceptionally stringent demands on the operators' physical fitness, strength, height, and sustained load-bearing capacity, easily leading to fatigue and even injury.

[0004] Current technology lacks standardized tools specifically designed for the efficient and labor-saving task of unloading and repositioning catenary cables. Relying solely on manual labor is not only extremely labor-intensive, posing high risks of muscle strain, falls, and accidental cable slippage and injury, but also makes it difficult to guarantee repositioning accuracy, directly impacting the subsequent operational quality of the overhead contact system. Therefore, there is an urgent need to develop a dedicated unloading device with a reasonable structure and convenient operation to significantly reduce labor intensity and safety risks, while improving operational efficiency and repositioning accuracy.

[0005] Based on this, the present invention proposes an unloading auxiliary device for load-bearing cable seats. Utility Model Content

[0006] To address the aforementioned problems in the prior art, namely the time-consuming and labor-intensive disassembly process of existing load-bearing cable seats, which poses personnel safety risks, this utility model provides a load-bearing cable seat unloading auxiliary device, which includes:

[0007] A support device is engaged with a wrist arm, and pry plates for prying the load-bearing cable are fixed at both ends of the support device.

[0008] The support device is fixed to the handle, which is used by the user to hold it.

[0009] Furthermore, the support device includes a support plate and a first slot;

[0010] The support plate has a first slot, which engages with the wrist arm. The support plate is fixed to the pry plate and the handle.

[0011] Furthermore, a second slot is provided on the pry plate, and the second slot engages with the load-bearing cable.

[0012] Furthermore, two pry bars are symmetrically arranged along the center of the support device.

[0013] Furthermore, the first slot is a semi-circular slot, and the diameter of the first slot is larger than the diameter of the wrist arm.

[0014] Furthermore, the second slot is a semi-circular slot, and the diameter of the second slot is larger than the diameter of the load-bearing cable.

[0015] Furthermore, the opening direction of the first card slot is opposite to the opening direction of the second card slot.

[0016] Furthermore, the handle is tilted.

[0017] Furthermore, a hanging hole is provided on the end of the handle away from the support device, and the hanging hole is used to store the load-bearing cable seat unloading auxiliary device.

[0018] Furthermore, a second slot is formed on the side of the skid plate away from the support device.

[0019] The beneficial effects of this utility model are:

[0020] In this invention, the support device is rigidly connected to the wrist arm to form a stable fulcrum. With the help of symmetrically arranged pry plates, the load-bearing cable is pried in a lever-like manner, which transforms the load that originally required direct manual lifting into mechanical force transmission, so that the operator only needs to apply a small force to complete the unloading and resetting operation.

[0021] This device uses a slot structure to reliably lock onto the wrist arm and the support cable, effectively avoiding the risk of the cable slipping during traditional manual lifting; at the same time, the reasonable layout of the handle keeps the operator away from the center of gravity of the load, reducing the probability of muscle strain and falls from heights.

[0022] The directional slot design on the skid plate in this invention ensures that the load-bearing cable is always in a controlled position during unloading and resetting, eliminating positional deviations during manual operation; a single person can quickly complete the entire process, significantly shortening the maintenance time window. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0024] Figure 1 This is a front view of a load-bearing cable seat unloading auxiliary device according to this utility model;

[0025] Figure 2 This is a first-view isometric view of a load-bearing cable seat unloading auxiliary device according to this utility model;

[0026] Figure 3 This is a second-view isometric view of a load-bearing cable seat unloading auxiliary device according to this utility model. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] like Figure 1 As shown, this utility model provides a load-bearing cable seat unloading auxiliary device, which includes:

[0030] Support device 1, which is engaged with the wrist arm, and pry plates 2 for prying the load-bearing cable are fixed at both ends of the support device 1.

[0031] The support device 1 is fixed to the handle 3, which is used by the user to hold.

[0032] In this embodiment, the support device 1, as the core load-bearing component, is made of high-strength steel plate. Its main structure has a locking mechanism in the middle that matches the contour of the wrist arm, ensuring that the device is firmly attached to the wrist arm during operation. A pry plate 2 is welded and fixed to both ends of the support device 1.

[0033] The support device 1 is welded to the handle 3 at the center of its back. The handle 3 can be rectangular or cylindrical. This utility model does not make any specific limitation. Any shape is within the protection scope of this utility model. The handle 3 has a diamond-shaped anti-slip texture rolled with a depth of 1.5mm, and a rubber grip is sleeved at the end to enhance the stability of operation.

[0034] During operation, grip handle 3 to engage support device 1 with the wrist arm. Then, pull handle 3 downwards, using the fixed fulcrum of support device 1 on the wrist arm to drive pry bar 2 to rise synchronously. Through leverage, the load-bearing cable is smoothly pushed away from its original installation position, thus removing the load-bearing cable seat. The reset operation is similar and will not be described in detail here.

[0035] like Figure 2 and Figure 3 As shown, as a further explanation of the present invention, the support device 1 includes a support plate 11 and a first slot 12;

[0036] The support plate 11 has a first slot 12, which engages with the wrist arm. The support plate 11 is fixed to the pry plate 2 and the handle 3. The first slot 12 is a semi-circular slot, and its diameter is larger than that of the wrist arm.

[0037] The support device 1 consists of a support plate 11 and a first slot 12 integrated thereon, forming the core functional unit. The support plate 11 is formed by laser cutting of steel plate, and its main body is a rectangular plate structure. At the central axis along the length direction of the support plate 11, the first slot 12 is formed through the plate body by wire cutting process. This slot serves as the key connection interface between the device and the cantilever arm. The two ends of the support plate 11 are milled to form flat mounting surfaces for vertical welding and fixing of the pry plate 2.

[0038] The first slot 12 is designed with a semi-circular opening structure, and the slot radius is strictly matched with the installation size of the target wrist arm. Based on the standard wrist arm specifications with common diameters of 48mm and 60mm, the diameter of the first slot 12 is set to 50mm or 62mm to ensure that the slot diameter is always 1-2mm larger than the wrist arm diameter. In other words, the first slot 12 is interference-fitted with the wrist arm.

[0039] In addition, the inner surface of the first slot 12 is polished and has a 2mm thick neoprene rubber pad adhered to it, which provides cushioning protection while enhancing the static friction between the slot and the wrist arm. The edges of the first slot 12 are machined with R3 rounded corners to prevent scratching the galvanized layer of the wrist arm during installation.

[0040] like Figure 2 and Figure 3As shown, as a further explanation of the present invention, two pry plates 2 are symmetrically arranged along the center of the support device 1. A second slot 21 is provided on the pry plate 2. The second slot 21 is engaged with the load-bearing cable. The second slot 21 is a semi-circular slot, and the diameter of the second slot 21 is larger than the diameter of the load-bearing cable.

[0041] The second slot 21 is designed with a semi-circular opening structure. Its diameter is set to 19.5mm or 26.5mm according to the commonly used 18mm and 25mm diameter catenary cable specifications, ensuring that it is 1.5mm larger than the diameter of the catenary cable to form an assembly gap. The edge of the slot is machined with an R2 rounded corner, and the inner surface is hard chrome plated and coated with a polyurethane wear-resistant coating.

[0042] The purpose of setting up two pry bars 2 and a second slot 21 is to maintain balance when prying the load-bearing cable.

[0043] like Figure 2 and Figure 3 As shown, as a further explanation of this utility model, the opening direction of the first slot 12 is opposite to the opening direction of the second slot 21.

[0044] Specifically, the first slot 12 opens downwards: the device naturally locks into the lower wrist arm using its own weight, and can be locked by pressing down with one hand;

[0045] The second slot 21 opens upwards: it automatically supports the falling load cable when the pry bar is raised, avoiding the need for manual lifting and alignment.

[0046] like Figure 3 As shown, as a further explanation of this utility model, the handle 3 is inclined, and a hanging hole 4 is provided on the end of the handle 3 away from the support device 1. The hanging hole 4 is used to store the load-bearing cable seat unloading auxiliary device.

[0047] In this embodiment, the axis of the handle 3 forms a preset tilt angle of 58°±2° with the plane of the support device 1, so that the arm is in the optimal force-generating posture.

[0048] like Figure 2 and Figure 3 As shown, as a further explanation of the present invention, the second slot 21 is formed on the side of the pry bar 2 away from the support device 1.

[0049] The second slot 21 is located at the farthest point of the end of the pry bar 2, maximizing the distance from the fulcrum to the point of force application. When the handle is pressed down, the lifting torque generated by the same operating force is multiplied several times, completely solving the problem of traditional tools being unable to pry due to insufficient lever arm.

[0050] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0053] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A load-bearing cable seat unloading auxiliary device, characterized in that, The device includes: A support device (1) is engaged with a wrist arm, and two ends of the support device (1) are fixed with pry plates (2) for prying the load-bearing cable. The support device (1) is fixed to the handle (3), which is used by the user to hold it. The support device (1) includes a support plate (11) and a first slot (12); The support plate (11) has a first slot (12) which engages with the wrist arm. The support plate (11) is fixed to the pry plate (2) and the handle (3).

2. The load-bearing cable seat unloading auxiliary device according to claim 1, characterized in that, The pry bar (2) has a second slot (21) which engages with the load-bearing cable.

3. The load-bearing cable seat unloading auxiliary device according to claim 1, characterized in that, Two pry bars (2) are symmetrically arranged along the center of the support device (1).

4. The load-bearing cable seat unloading auxiliary device according to claim 1, characterized in that, The first slot (12) is a semi-circular slot, and the diameter of the first slot (12) is larger than the diameter of the wrist arm.

5. The load-bearing cable seat unloading auxiliary device according to claim 2, characterized in that, The second slot (21) is a semi-circular slot, and the diameter of the second slot (21) is larger than the diameter of the load-bearing cable.

6. A load-bearing cable seat unloading auxiliary device according to claim 4 or 5, characterized in that, The opening direction of the first slot (12) is opposite to the opening direction of the second slot (21).

7. The load-bearing cable seat unloading auxiliary device according to claim 1, characterized in that, The handle (3) is tilted.

8. The load-bearing cable seat unloading auxiliary device according to claim 1, characterized in that, The handle (3) has a hanging hole (4) on one end away from the support device (1), and the hanging hole (4) is used to store the load-bearing cable seat unloading auxiliary device.

9. The load-bearing cable seat unloading auxiliary device according to claim 1, characterized in that, The second slot (21) is located on the side of the pry bar (2) away from the support device (1).

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