A catenary pendant lifting hoist

Abstract

The utility model discloses a contact net plummet lifting hoist relates to plummet lifting technical field, include: gourd hook, and the arc -shaped groove is set up along its support surface arc -shaped direction, steel wire sleeve is set up on gourd hook along the height direction of gourd hook, and the inner ring top of steel wire sleeve is provided with the clamping block, sliding block, along the arc line direction of arc -shaped groove sliding assembly in the arc -shaped groove, and the inside wall surface of gourd hook is flush with the one side of sliding block away from the arc -shaped groove, the utility model discloses through the spring of symmetrical setting, respectively generates repulsion and tension when sliding block sliding, forms two -way buffer, slows down sliding block sliding speed, avoids the damage that sliding block is because quick sliding and arc -shaped groove groove wall collision caused, and the elastic recovery force of spring can assist sliding block reset, improves hoist use stability, avoids that plummet is affected by the action of external force and swings to left and right, drives steel wire sleeve to be easy to slip off from gourd hook, guarantees the plummet lifting.

Description

Technical Field

[0001] This utility model relates to the field of catenary lifting technology, specifically a catenary lifting device. Background Technology

[0002] The weight is an important component of the overhead contact system of electrified railways. It is mainly used in the anchor compensation device of the overhead contact system of electrified railways. Its function is to adjust the compensation tension of the catenary or contact wire, which plays a vital role in enabling electric locomotives to draw power from the overhead contact system.

[0003] During on-site construction, the common practice is to install the weight fixing clips onto the welded ring of the weight rod to prevent slippage, and then use the steel wire at the lower end of the steel wire sleeve to fix the weight rod securely. After that, a hoist is used to lift the steel wire sleeve for lifting operations. During the lifting process, when the weight is subjected to external force and swings left and right, the steel wire sleeve is easy to slip off the hoist hook, causing the weight to be unable to be lifted.

[0004] Therefore, we propose a lifting device for the overhead contact line weight. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a lifting device for contact wire weights.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A lifting device for a catenary weight, comprising:

[0008] The gourd hook has an arc-shaped groove along the arc direction of its supporting surface;

[0009] A wire sleeve is installed on the hoist hook along the height direction, and a locking block is provided at the top of the inner ring of the wire sleeve.

[0010] The slider is slidably assembled in the arc groove along the arc direction. The side of the slider away from the arc groove is flush with the inner wall of the hoist hook, and a slot matching the locking block is opened on this side. The locking block is inserted into the slot to limit the steel wire sleeve.

[0011] Two springs are symmetrically arranged on both sides of the slider along the direction of movement of the slider in the arc groove, and the ends of the two springs abut against the groove wall of the arc groove and the side wall of the slider.

[0012] Two pull ropes, one end of each pull rope is fixed to the end of the slider along the direction of movement, and the other end is installed crosswise on the inner wall of the hoist hook;

[0013] When the wire sleeve drives the locking block to slide along the arc groove, the slider slides synchronously with the locking block and squeezes the spring on one side. The squeezed spring forms a repulsive force on the wire sleeve, and the spring on the other side is stretched to form a pulling force on the slider. The pull rope at one end of the slider sliding direction pulls the slider in the direction away from the slider, reducing the stroke loss of the wire sleeve.

[0014] Preferably, the wire sleeve is woven from multiple strands of galvanized steel wire, and the inner ring of the wire sleeve that contacts the hoist hook is wrapped with a wear-resistant rubber layer. The thickness of the wear-resistant rubber layer is 1-3mm to reduce wear between the wire sleeve and the hoist hook.

[0015] Preferably, the sum of the lengths of the two springs and the length of the slider is equal to the length of the arc groove.

[0016] Preferably, the lower end of the wire sleeve is connected to three weight rods by a wire, and the lower end of the three weight rods is provided with a support plate, on which multiple weights are placed.

[0017] Preferably, the arc length of the arc groove is less than the inner length of the gourd hook.

[0018] Preferably, the pull rope is detachably installed on the inner wall of the gourd hook.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model uses symmetrically arranged springs to generate repulsive and tensile forces respectively when the slider slides, forming a two-way buffer, slowing down the sliding speed of the slider, and preventing the slider from being damaged by collision with the arc-shaped groove wall due to rapid sliding. At the same time, the elastic restoring force of the spring can assist the slider to reset, improve the stability of the lifting device, and prevent the weight from swinging left and right under the action of external force, which would cause the wire sleeve to easily slip off the hoist hook, thus ensuring the lifting of the weight.

[0021] 2. The pull rope in this utility model is made of high-strength nylon material, which ensures that it has sufficient tensile strength, is lightweight and flexible, and can effectively change the direction of the tensile force. When the slider slides, the stroke loss of the wire sleeve is reduced by pulling the slider, which improves the lifting efficiency of the lifting device and reduces energy waste. The detachable installation method also facilitates the replacement and maintenance of the pull rope. Attached Figure Description

[0022] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0023] Figure 1 A schematic diagram of the overall structure of a catenary weight lifting device;

[0024] Figure 2 This is a structural schematic diagram of a contact wire weight lifting device.

[0025] Figure 3 This is a top view of a pallet in a catenary weight lifting device.

[0026] The diagram shows the following labels: 1. Arc groove; 2. Spring; 4. Wire sleeve; 5. Hoist hook; 8. Slider; 9. Locking block; 10. Support plate; 11. Pull rope. Detailed Implementation

[0027] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0028] Example

[0029] like Figures 1-3 As shown, a lifting device for a contact wire weight includes: a hoist hook 5 with an arc-shaped groove 1 along the arc direction of its supporting surface; a wire sleeve 4, mounted on the hoist hook 5 along the height direction, with a locking block 9 at the top of the inner ring of the wire sleeve 4; a slider 8, slidably mounted in the arc-shaped groove 1 along the arc direction of the arc-shaped groove 1, with the side of the slider 8 facing away from the arc-shaped groove 1 flush with the inner wall of the hoist hook 5, and a locking groove matching the locking block 9 is provided on this side, the locking block 9 engaging in the locking groove to limit the movement of the wire sleeve 4; and two springs 2, symmetrically arranged on both sides of the slider 8 along the direction of movement of the slider 8 in the arc-shaped groove 1. Both springs 2 have their ends abutting against the groove wall of the arc groove 1 and the side wall of the slider 8; both pull ropes 11 have one end fixed to the end of the slider 8 along the direction of movement, and the other end is cross-mounted on the inner wall of the hoist hook 5; when the wire sleeve 4 drives the locking block 9 to slide along the arc groove 1, the slider 8 slides synchronously with the locking block 9 and squeezes the spring 2 on one side. The squeezed spring 2 forms a repulsive force against the wire sleeve 4, and the spring 2 on the other side is stretched to form a pulling force against the slider 8. The pull rope at the end of the slider 8 in the sliding direction pulls the slider 8 in the direction away from the sliding direction of the slider 8, reducing the stroke loss of the wire sleeve 4.

[0030] Specifically, the hoist hook 5 is made of high-strength alloy steel to ensure the overall load-bearing capacity of the lifting device. The size design of the arc groove 1 ensures smooth sliding of the slider 8 and also limits the slider 8 to prevent it from detaching from the arc groove 1. The design of the slider 8 being flush with the inner wall of the hoist hook 5 prevents the slider 8 from protruding and causing structural interference, ensuring a flat appearance of the lifting device and not affecting the operation of other components. The selection of the material and installation method of the wire sleeve 4 ensures that it has sufficient strength to withstand the weight of the weight. The cooperation between the locking block 9 and the locking groove can effectively limit the wire sleeve 4 and reduce the frictional wear between the locking block 9 and the locking groove, facilitating the relative sliding of the two. The two symmetrically arranged springs 2 generate repulsive and tensile forces respectively when the slider 8 slides, forming a two-way buffer to slow down the sliding speed of the slider 8 and prevent the slider 8 from being damaged by collision with the wall of the arc groove 1 due to rapid sliding. At the same time, the elastic restoring force of the springs 2 can assist the slider 8 to reset, improving the stability of the lifting device. The pull rope 11 is made of high-strength nylon material to ensure that it has sufficient tensile strength, is lightweight and flexible, and can effectively change the direction of the tensile force. When the slider 8 slides, it reduces the stroke loss of the wire sleeve 4 by pulling the slider 8, improving the lifting efficiency of the lifting device and reducing energy waste. The detachable installation method also facilitates the replacement and maintenance of the pull rope 11.

[0031] In one embodiment, the wire sleeve 4 is woven from multiple strands of galvanized steel wire, and the inner ring of the wire sleeve 4, where it contacts the hoist hook 5, is wrapped with a wear-resistant rubber layer. The thickness of the wear-resistant rubber layer is 1-3mm to reduce wear between the wire sleeve 4 and the hoist hook 5. Specifically, the wire sleeve 4 woven from multiple strands of galvanized steel wire has a 30%-50% higher tensile strength than a single strand of steel wire, enabling it to withstand a greater weight of the weight. Furthermore, the galvanized layer effectively isolates air and moisture, preventing the steel wire from rusting and corroding, thus extending the service life of the wire sleeve 4. The cross-weaving method and reasonable weaving density make the wire sleeve... 4. It has good flexibility, making it easy to install on the hoist hook 5 and move with the lifting device; the wear-resistant rubber layer made of nitrile rubber has excellent wear resistance and oil resistance. Its Shore hardness selection can ensure wear resistance and also have a certain degree of elasticity. When the wire sleeve 4 comes into contact with the hoist hook 5, it can reduce the hard friction between the two. Tests have shown that after wrapping with the wear-resistant rubber layer, the wear between the wire sleeve 4 and the hoist hook 5 is reduced by 60%-80%, which significantly extends the service life of both. At the same time, the elasticity of the wear-resistant rubber layer can also play a buffering role, reducing the noise generated when the wire sleeve 4 comes into contact with the hoist hook 5.

[0032] In one embodiment, the sum of the lengths of the two springs 2 and the length of the slider 8 is equal to the length of the arc groove 1. This dimensional relationship ensures that when the slider 8 moves within the arc groove 1, the two springs 2 always remain in contact with the groove wall of the arc groove 1 and the side wall of the slider 8, preventing the springs 2 from disengaging from the slider 8 or the arc groove 1. This ensures that the buffering and resetting effect of the springs 2 on the slider 8 remains effective, avoiding the loss of control of the slider 8 due to the springs 2 disengaging, and improving the stability and safety of the lifting device operation.

[0033] Meanwhile, the deformation of spring 2 is always controlled within the elastic deformation range, which can effectively extend the service life of spring 2, reduce the frequency of replacement due to excessive deformation damage, and reduce the maintenance cost of the lifting device.

[0034] In one embodiment, the lower end of the wire sleeve 4 is connected to three weight rods via steel wires. The lower ends of the three weight rods are provided with support plates 10, on which multiple weights are placed. The three weight rods, arranged in an equilateral triangle, can evenly distribute the weight of the weights onto the wire sleeve 4, preventing the wire sleeve 4 from being damaged due to excessive local stress caused by uneven force distribution, and improving the service life of the wire sleeve 4. The selection of the material and size of the weight rods ensures that they have sufficient strength to support the weight of the weights and prevents the weight rods from bending and deforming.

[0035] The circular pallet 10 provides a stable platform for multiple weights. The evenly distributed weight-reducing holes reduce weight and facilitate the handling of the pallet 10 by operators. The cast iron weights have high density, achieving the required weight in a small volume, reducing the overall space occupied by the lifting device. The top weight is fixed to the weight rod with clamps, effectively preventing the weights from swaying and slipping during lifting, ensuring the safety of the lifting device during use, and avoiding equipment damage or personal injury caused by falling weights.

[0036] In one embodiment, the arc length of the arc groove 1 is less than the inner length of the hoist hook 5. This design provides sufficient safety margin for the movement of the slider 8, preventing the slider 8 from exceeding the inner range of the hoist hook 5 during movement, avoiding interference between the slider 8 and other components on the outside of the hoist hook 5, and ensuring the coordination of the operation of all components of the lifting device. The gap between the slider 8 and the inner end of the hoist hook 5 effectively buffers the impact force when the slider 8 moves to its limit position, reduces collision damage to the slider 8 and the hoist hook 5, extends their service life, avoids noise generated by collisions, and improves the working environment.

[0037] In one embodiment, the pull rope 11 is detachably installed on the inner wall of the hoist hook 5. This detachable installation facilitates the replacement and maintenance of the pull rope 11. When the pull rope 11 wears out, ages, or breaks due to long-term use, the operator does not need to disassemble the entire lifting device; they can quickly replace the pull rope 11 simply by disassembling the connector or buckle, saving maintenance time and labor costs. The threaded connection method has high connection strength, ensuring that the pull rope 11 will not easily fall off during use, guaranteeing the stability of the lifting device's operation. The buckle connection method is more convenient to operate and suitable for scenarios requiring frequent replacement of the pull rope 11. The two detachable connection methods can be selected according to actual usage needs, improving the versatility and practicality of the lifting device. Simultaneously, the detachable installation also facilitates regular inspection of the pull rope 11, allowing for timely detection of potential faults and early replacement, preventing pull rope breakage that could lead to lifting device malfunction and improving the safety of the lifting device.

[0038] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A lifting device for a contact wire weight, characterized in that, include: The gourd hook (5) has an arc groove (1) along the arc direction of its supporting surface; A wire sleeve (4) is provided on the hoist hook (5) along the height direction of the hoist hook (5), and a locking block (9) is provided on the top of the inner ring of the wire sleeve (4). The slider (8) is slidably assembled in the arc groove (1) along the arc direction of the arc groove (1). The side of the slider (8) away from the arc groove (1) is flush with the inner wall of the hoist hook (5), and a slot matching the card block (9) is opened on this side. The card block (9) is inserted into the slot to limit the steel wire sleeve (4). Two springs (2) are symmetrically arranged on both sides of the slider (8) along the direction of movement of the slider (8) in the arc groove (1), and the ends of the two springs (2) abut against the groove wall of the arc groove (1) and the side wall of the slider (8). Two pull ropes (11), one end of each pull rope is fixed to the end of the slider (8) along the direction of movement, and the other end is installed crosswise on the inner wall of the gourd hook (5); When the wire sleeve (4) drives the locking block (9) to slide along the arc groove (1), the slider (8) slides synchronously with the locking block (9) and squeezes the spring (2) on one side. The squeezed spring (2) forms a repulsive force on the wire sleeve (4), and the spring (2) on the other side is stretched to form a pulling force on the slider (8). The pull rope at one end of the slider (8) in the sliding direction pulls the slider (8) in the direction away from the sliding direction of the slider (8), reducing the stroke loss of the wire sleeve (4).

2. The contact wire weight lifting device according to claim 1, characterized in that: The wire sleeve (4) is woven from multiple strands of galvanized steel wire, and the part of the inner ring of the wire sleeve (4) that contacts the hoist hook (5) is wrapped with a wear-resistant rubber layer. The thickness of the wear-resistant rubber layer is 1-3mm, so as to reduce the wear between the wire sleeve (4) and the hoist hook (5).

3. The contact wire weight lifting device according to claim 2, characterized in that: The sum of the lengths of the two springs (2) and the length of the slider (8) is equal to the length of the arc groove (1).

4. The contact wire weight lifting device according to claim 3, characterized in that: The lower end of the wire sleeve (4) is connected to three weight rods by a wire. The lower ends of the three weight rods are provided with a support plate (10), on which multiple weights are placed.

5. The contact wire weight lifting device according to claim 4, characterized in that: The arc length of the arc groove (1) is less than the inner length of the gourd hook (5).

6. The contact wire weight lifting device according to claim 5, characterized in that: The pull rope (11) can be detachably installed on the inner wall of the gourd hook (5).

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