Contact line compensation device

Abstract

This application relates to the field of overhead contact line accessories technology, and provides an overhead contact line compensation device. The device includes: a pulley block equipped with a compensation rope, one end of which extends to the outside of the pulley block to form a connecting section for connecting a weight; a connecting frame mounted on the pulley block; and a limiting part fixed to the connecting frame, forming a limiting channel extending vertically through the limiting part. The connecting section passes through the limiting channel to restrict the horizontal movement of the compensation rope relative to the pulley block. When the weight swings, the limiting channel restricts the horizontal swing amplitude of the connecting section; when the pulley block swings, the limiting part swings with the pulley block via the connecting frame, and the inner wall of the limiting channel pushes the connecting section to swing with the pulley block, ultimately limiting the range of movement of the compensation rope relative to the pulley block, preventing uneven wear between the compensation rope and the pulley block grooves, and improving the lifespan and reliability of the overhead contact line compensation device.

Description

Technical Field

[0001] This application relates to the field of overhead contact line accessories technology, and in particular to an overhead contact line compensation device. Background Technology

[0002] The overhead contact system is a dedicated power transmission line erected above electrified railway lines to provide traction power to electric locomotives. During operation, the catenary wire and contact wire (collectively referred to as "caten") in the contact system will expand and contract in length due to factors such as temperature changes and mechanical loads, causing fluctuations in their tension. To ensure that the contact system tension remains constant, tension compensation devices must be installed at the ends of the catenary wires.

[0003] The compensation devices widely used in existing technology mainly consist of pulley blocks, compensating ropes, and weights. The pulley blocks are fixed to the contact wire support posts and connected to the end of the wire via connectors. The compensating rope is wound around the pulleys of the pulley blocks, with one end connected to the wire connector and the other end suspending the weight. The weight of the weight is transmitted to the wire through the compensating rope and pulley blocks, keeping it constantly taut.

[0004] External stimuli such as changes in ambient temperature, natural wind, and vibrations from high-speed electric locomotives can all induce swaying of the weight or pulley system. This swaying causes displacement of the compensating rope relative to the pulleys in the pulley system. When the relative displacement is too large, the compensating rope will experience severe friction with the sidewall of the pulley groove, resulting in serious uneven wear. This not only accelerates the wear, damage, and even breakage of the compensating rope, but also leads to irregular wear or deformation of the pulley groove, shortening the service life of the compensation device and affecting the reliability and safety of the overhead contact line operation. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a catenary compensation device.

[0006] This application provides a contact wire compensation device, comprising:

[0007] A pulley block equipped with a compensating rope, one end of which extends to the outside of the pulley block to form a connecting section for connecting a weight.

[0008] A connecting frame is mounted on the pulley block;

[0009] A limiting part is fixed on the connecting frame and has a limiting channel that extends vertically through the limiting part. The connecting section passes through the limiting channel to restrict the compensation rope from moving horizontally relative to the pulley block.

[0010] Optionally, the limiting channel is provided with a bearing portion, and the connecting section passes through the bearing portion.

[0011] Optionally, the bearing portion is a rolling bearing, which includes an outer ring, an inner ring, and a plurality of rolling elements. The inner ring is fitted inside the outer ring, and the plurality of rolling elements are rotatably disposed between the inner ring and the outer ring. The outer ring is connected to the inner wall of the limiting channel, and the connecting section passes through the inner ring.

[0012] Optionally, the bearing part is an integrated ball bearing, which includes a base and a plurality of balls. The base is fixed in the limiting channel. The base is provided with a limiting hole that extends vertically through the base. The plurality of balls are evenly distributed on the hole wall of the limiting hole, and each ball is rotatably connected to the hole wall of the limiting hole.

[0013] The connecting section passes through the limiting hole.

[0014] Optionally, the diameter of the limiting hole gradually increases from the middle of the limiting hole toward both ends of the limiting hole.

[0015] Optionally, the inner wall of the limiting channel and the limiting part are smoothly transitioned between the two end faces opposite each other in the vertical direction by an arc-shaped surface.

[0016] Optionally, the limiting part includes an outer frame and a buffer block;

[0017] The outer frame is fixedly connected to the connecting frame, the buffer block is embedded in the inner side of the outer frame, and the limiting channel passes through the buffer block.

[0018] Optionally, the buffer block is a nylon block.

[0019] Optionally, the connecting frame includes a vertical section and a horizontal section. The top end of the vertical section is fixed to the pulley block, and the horizontal section is disposed at the bottom end of the vertical section. The horizontal section extends in a horizontal direction, and the limiting part is installed on the horizontal section.

[0020] Optionally, the connecting frame includes two clamping plates, which are respectively disposed on both sides of the pulley group along the axial direction and are fixedly connected to the pulley group;

[0021] The limiting part is fixedly connected between the two clamping plates.

[0022] The technical solution provided in this application has the following advantages compared with the prior art:

[0023] The overhead contact line compensation device provided in this application has a connecting frame installed on a pulley block, and a limiting part fixedly installed on the connecting frame. The limiting part has a vertically arranged limiting channel. The naturally hanging connecting section of the compensation rope passes through the limiting channel and connects to the weight. When the weight swings, the limiting channel restricts the horizontal swing amplitude of the connecting section, thereby reducing the movement distance of the compensation rope in the pulley block groove. When the pulley block swings, the limiting part swings with the pulley block through the connecting frame, and the inner wall of the limiting channel pushes the connecting section to swing with the pulley block, reducing the axial movement distance of the compensation rope relative to the pulley block. Through the cooperation of the pulley block, connecting frame, and limiting part, the range of movement of the compensation rope relative to the pulley block is limited, avoiding uneven wear between the compensation rope and the pulley block groove, thus improving the service life and reliability of the overhead contact line compensation device. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overhead contact line compensation device described in the embodiments of this application;

[0027] Figure 2 This is a front view of the overhead contact line compensation device described in the embodiments of this application;

[0028] Figure 3 This is a cross-sectional view of a limiting part according to an embodiment of this application;

[0029] Figure 4 This is a cross-sectional view of another limiting part described in an embodiment of this application.

[0030] Among them, 1. Pulley block; 11. Compensating rope; 111. Connecting section; 2. Connecting frame; 21. Vertical section; 22. Horizontal section; 3. Limiting part; 31. Outer frame; 32. Buffer block; 33. Bearing part; 331. Base; 332. Ball bearing. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0033] Reference Figures 1 to 4 As shown in the figure, this application provides a contact wire compensation device, including: a pulley block 1, a connecting frame 2, and a limiting part 3. The pulley block 1 is equipped with a compensation rope 11, one end of which extends to the outside of the pulley block 1 to form a connecting section 111, which is used to connect a weight; the connecting frame 2 is mounted on the pulley block 1; the limiting part 3 is fixed to the connecting frame 2 and has a limiting channel that passes through the limiting part 3 in the vertical direction, and the connecting section 111 passes through the limiting channel to restrict the movement of the compensation rope 11 relative to the pulley block 1 in the horizontal direction.

[0034] Specifically, the pulley block 1 may include multiple pulleys, with at least some pulleys separated from the others, allowing the pulleys of the two parts of the pulley block 1 to approach and move away from each other. Each pulley has a groove on its outer circumference. The compensating rope 11 is wound around the multiple pulleys, embedding itself in the groove of each pulley to ensure that the compensating rope 11 remains connected to the pulley. One end of the compensating rope 11 extends to the outside of the pulley block 1 to form a connecting section 111. The connecting section 111 hangs down naturally and connects to the weight. The two ends of the pulley block 1 are respectively connected to the support post and the wire of the contact network. The weight of the weight tightens the compensating rope 11, causing the two parts of the pulleys to approach each other, so that the pulley block 1 can provide a constant tension force to the wire, ensuring that the wire is in a taut state.

[0035] When the weight swings, it will drive the compensating rope 11 to move in the groove through the connecting section 111. The continuous friction between the compensating rope 11 and the side wall of the groove will wear down the compensating rope 11 and also damage the groove of the pulley block, making it easy for the compensating rope 11 to come out of the groove.

[0036] When pulley block 1 vibrates and swings, the weight is not easily swayed due to its suspended design. At this time, the position of the compensating rope 11 is relatively stable. The swing of pulley block 1 will cause the compensating rope 11 to move in the groove. When the swing amplitude of pulley block 11 is large, the compensating rope 11 is prone to uneven wear in the groove. The connecting frame 2 is connected to pulley block 1. When pulley block 1 swings, it will drive the connecting frame 2 to move together. The limiting part 3 moves together with the connecting frame 2. The connecting section 111 moves within the limiting channel due to the push of the inner wall of the limiting channel. This allows the connecting section 111 and the compensating rope 11 in the groove to move with the swing of pulley block 1, limiting the axial movement distance of the compensating rope 11 relative to pulley block 1 and preventing uneven wear of the compensating rope 11 in the groove of pulley block 1.

[0037] The aforementioned pulley block 1 may include a first fixed pulley, a second fixed pulley, a movable pulley, a fixed plate, and a mounting plate. The outer circumferential surfaces of the first fixed pulley, the second fixed pulley, and the movable pulley are all formed with wheel grooves. The first fixed pulley and the second fixed pulley are both mounted on the fixed plate, and the movable pulley is mounted on the mounting plate. The first fixed pulley is located on the side of the second fixed pulley away from the movable pulley. One end of the compensating rope is fixedly connected to the mounting plate, and the other end is arranged sequentially around the second fixed pulley, the movable pulley, and the first fixed pulley, and falls vertically from the first fixed pulley. The connecting frame 2 is connected to the fixed plate, and the limiting part 3 is on the connecting frame 2 and located at the naturally hanging connecting section 111. After the compensating rope 11 is threaded through the limiting channel, when the weight or pulley block is not swinging, the compensating rope 11 can be spaced apart from the inner wall of the limiting channel. When the weight or pulley block swings, the connecting section 111 abuts against the inner wall of the limiting channel so that the limiting channel restricts the swing range of the connecting section in the horizontal direction and avoids uneven wear between the compensating rope 11 and the groove of the pulley block 1.

[0038] The aforementioned limiting part 3 can be a block structure with a limiting channel running vertically through it. The connecting section 111 of the compensating rope 11 can be inserted into the limiting channel in a naturally hanging state. Alternatively, the limiting part 3 can be a hollow frame structure with the space inside the frame structure forming the limiting channel. The connecting section 111 is inserted into the limiting channel, and the limiting channel restricts the swing of the connecting section 111 in the horizontal direction.

[0039] The connecting frame 2 can be bolted to the pulley block 1. The connecting frame 2 extends vertically, and the limiting part 3 is on the connecting frame 2 and located below the pulley block 1, so that the naturally drooping connecting section 111 can pass through the limiting channel and connect with the weight.

[0040] In specific use, the contact wire compensation device provided in this application embodiment connects one end of the pulley block 1 to the support column and the other end to the wire; the connecting frame 2 is fixed on the pulley block 1, and the limiting part 3 is located on the bottom side of the pulley block 1 on the connecting frame 2. The limiting part 3 is located at the naturally drooping connecting section 111, and the connecting section 111 passes through the limiting channel and is connected to the weight; the weight pulls the compensation rope 11, and the compensation rope 11 causes the pulley block 1 to apply a constant force to the wire, so that the wire is in a taut state.

[0041] The contact wire compensation device provided in this embodiment has a connecting frame 2 installed on a pulley block 1. A limiting part 3 is fixedly installed on the connecting frame 2. The limiting part 3 has a vertically arranged limiting channel. The connecting section 111 of the compensation rope 11, which hangs down naturally, passes through the limiting channel and connects to the weight. When the weight swings, the limiting channel restricts the swing amplitude of the connecting section 111 in the horizontal direction, thereby reducing the movement distance of the compensation rope 11 in the groove of the pulley block 1. When the pulley block 1 swings, the limiting part 3 swings together with the pulley block 1 through the connecting frame 2. The inner wall of the limiting channel pushes the connecting section 111 to swing together with the pulley block 1, reducing the axial movement distance of the compensation rope 11 relative to the pulley block 1. Through the cooperation of the pulley block 1, the connecting frame 2, and the limiting part 3, the range of movement of the compensation rope 11 relative to the pulley block 1 is limited, avoiding uneven wear between the compensation rope 11 and the groove of the pulley block 1, thus improving the lifespan and reliability of the contact wire compensation device.

[0042] Reference Figure 3 and Figure 4 As shown, in some embodiments, a bearing portion 33 is provided in the limiting channel, and a connecting section 111 passes through the bearing portion 33.

[0043] With this configuration, when the weight drives the connecting section 111 to oscillate in a circular motion, the bearing part 33 rotates within the limiting channel, reducing the friction between the connecting section 111 and the limiting channel, thereby reducing the wear on the connecting section 111.

[0044] Specifically, the bearing part 33 can be a deep groove ball bearing or a ball bearing. The connecting section 111 is inserted into the bearing part 33. When the weight swings, it drives the connecting section 111 to swing. The connecting section 111 is easy to move in a circular motion. When the connecting section 111 moves in a circular motion, it contacts the bearing part 33. The bearing part 33 rotates, which reduces the friction between the connecting section 111 and the inner wall of the limiting channel, and reduces the wear on the connecting section 111.

[0045] Reference Figure 3 As shown, in some embodiments, the bearing part 33 is a rolling bearing, which includes an outer ring, an inner ring and a plurality of rolling elements. The inner ring is fitted inside the outer ring, and the plurality of rolling elements are rotatably disposed between the inner ring and the outer ring. The outer ring is connected to the inner wall of the limiting channel, and the connecting section 111 passes through the inner ring.

[0046] With this configuration, the rolling bearings space the connecting section 111 from the inner wall of the limiting channel, and when the connecting section 111 swings, it drives the inner ring to rotate relative to the outer ring, thus avoiding direct friction between the connecting section 111 and the inner wall of the limiting channel during swinging and reducing the wear rate of the connecting section 111 during use.

[0047] Specifically, the inner and outer rings of the rolling bearing are coaxially arranged. The rolling elements can be balls or rolling columns. The axis of the rolling columns is parallel to the axis of the inner and outer rings. Multiple rolling columns are arranged between the inner and outer rings. The rotation of the rolling columns can cause the inner ring to rotate relative to the outer ring.

[0048] The outer ring can be fixed in the limiting channel by snap-fit. The inner ring and the connecting section 111 can be fitted with a clearance, or the connecting section 111 can be fitted to the inner ring. When the connecting section 111 sways, the inner ring rotates relative to the outer ring, preventing the connecting section 111 from directly rubbing against the inner wall of the limiting channel.

[0049] Reference Figure 4 As shown, in some embodiments, the bearing part 33 is an integrated ball bearing. The ball bearing includes a base 331 and a plurality of balls 332. The base 331 is fixed in the limiting channel. The base 331 is provided with a limiting hole that extends vertically through the hole. The plurality of balls 332 are evenly distributed on the hole wall of the limiting hole, and each ball 332 is rotatably connected to the hole wall of the limiting hole.

[0050] The connecting section 111 is inserted into the limiting hole.

[0051] With this configuration, the ball 332 can rotate freely on the base 331, allowing the ball 332 to adapt to the compound oscillation of the connecting section 111 in multiple directions, thus reducing the friction experienced by the connecting section 111 during oscillation.

[0052] Specifically, the base 331 can be a cylindrical or block structure. A limiting hole is provided on the base 331, and the centerline of the limiting hole can coincide with the centerline of the limiting channel. The diameter of the limiting hole at all positions can be equal, or the diameter at the center of the limiting hole can be smaller than the diameter at other positions.

[0053] Multiple mounting grooves can be optionally provided on the inner wall of the limiting hole. The shape of the mounting grooves matches the ball bearing 332. The ball bearing 332 is rotatably mounted in the mounting groove. Multiple ball bearings 332 can be arranged along the circumference of the limiting hole on the inner wall of the limiting hole. Alternatively, multiple ball bearings 332 can be arranged along the circumference of the limiting hole to form a ball bearing group. Multiple ball bearing groups are set in the limiting hole and arranged along the axial direction of the limiting hole.

[0054] When the connecting segment 111 is within the limiting hole, it is spaced apart from the multiple balls 332, or it is in point contact with at least some of the balls 332. When the connecting segment 111 swings, it contacts the balls 332 and drives them to rotate. The rotation of the balls 332 reduces the friction on the connecting segment 111 and reduces wear. The balls 332 can rotate in multiple directions. When the weight swings, the compensating rope 11 elastically deforms and elongates or shortens, causing the connecting segment 111 to move vertically as well. When the connecting segment 111 moves up and down vertically, the balls 332 also roll, reducing the friction on the connecting segment 111.

[0055] Reference Figure 4 As shown, in some embodiments, the diameter of the limiting hole gradually increases from the middle of the limiting hole toward both ends of the limiting hole.

[0056] With this configuration, the limiting hole has a double conical structure. The inclined hole wall of the limiting hole can guide the connecting section 111 back to the center of the limiting hole. When the inclined hole wall of the limiting hole contacts the connecting section 111, the multiple balls 332 on the hole wall rotate in multiple directions to reduce the friction on the connecting section 111.

[0057] Specifically, the limiting hole has a double-conical structure, with the tips of the two cones facing each other, so that the diameter of the limiting hole at the middle in the vertical direction is smaller than the diameter at other positions. When the connecting segment 111 swings, the connecting segment 111 contacts the inclined wall of the limiting hole, and the inclined wall of the hole generates a directional guiding force on the connecting segment 111, forcing the connecting segment 111 back to the center position of the limiting hole.

[0058] Reference Figure 4 As shown, in some embodiments, the inner wall of the limiting channel and the limiting part 3 are smoothly transitioned between two opposite end faces in the vertical direction by an arc-shaped surface.

[0059] This design allows the curved surface to smoothly transition between the end faces of the limiting channel and the limiting part 3, reducing friction on the connecting section 111 and preventing sharp corner structures from forming at the transition between the end faces of the limiting channel and the limiting part 3, which would accelerate the wear of the connecting section 111.

[0060] Specifically, the diameter of the end of the limiting channel gradually increases in the direction away from the limiting channel, making the inner wall surface of the end of the limiting channel arc-shaped, and the arc-shaped surface extends to the end face of the limiting part 3. The arc-shaped surface avoids the formation of sharp corner structures at the end of the limiting channel, and the connecting section 111 contacts the arc-shaped surface when it swings, reducing the friction experienced by the connecting section 111.

[0061] Reference Figure 4 As shown, in some embodiments, the limiting part 3 includes an outer frame 31 and a buffer block 32;

[0062] The outer frame 31 is fixedly connected to the connecting frame 2, the buffer block 32 is embedded in the inner side of the outer frame 31, and the limiting channel passes through the buffer block 32.

[0063] With this configuration, the buffer block 32 can absorb the vibration of the connecting section 111 when it swings, reduce the swing amplitude of the connecting section 111, and the buffer block 32 causes less wear on the connecting section 111, thus extending the service life of the connecting section 111.

[0064] Specifically, the outer frame 31 can be a rectangular frame or a cylindrical frame. The interior of the outer frame 31 is hollow, and the buffer block 32 is placed inside the outer frame 31. The buffer block 32 and the outer frame 31 can be connected to each other by adhesive bonding, or the buffer block 32 and the outer frame 31 can be interference fit.

[0065] The aforementioned buffer block 32 can be made of plastic or nylon. The buffer block 32 has a stronger deformation capacity than the outer frame 31, allowing the vibration energy on the connecting section 111 to be transmitted to the buffer block 32, so that the buffer block 32 absorbs the energy of the movement of the connecting section 111. Furthermore, the hardness of the buffer block 32 is lower than that of the outer frame 31, resulting in lower wear when the connecting section 111 contacts the buffer block 32, which can extend the service life of the connecting section 111.

[0066] Reference Figure 4 As shown, in some embodiments, the buffer block 32 is a nylon block.

[0067] Specifically, the nylon material has high damping characteristics. When the connecting segment 111 comes into contact with the nylon material, the vibration on the connecting segment 111 is transmitted to the nylon block. The nylon block absorbs the vibration transmitted by the connecting segment 111 and reduces the kinetic energy of the connecting segment 111, thereby reducing the swing amplitude of the connecting segment 111.

[0068] Reference Figure 1 and Figure 2 As shown, in some embodiments, the connecting frame 2 includes a vertical section 21 and a horizontal section 22. The top end of the vertical section 21 is fixed to the pulley block 1, and the horizontal section 22 is disposed at the bottom end of the vertical section 21. The horizontal section 22 extends in the horizontal direction, and the limiting part 3 is installed on the horizontal section 22.

[0069] With this configuration, the vertical section 21 moves the horizontal section 22 away from the pulley block 1, so that the horizontal section 22 is close to the weight. The horizontal section 22 extends in the horizontal direction, so that the limiting part 3 is at the naturally drooping connecting section 111, ensuring that the naturally drooping connecting section 111 can pass through the limiting channel.

[0070] Specifically, the vertical section 21 and the horizontal section 22 are an integrated structure. The horizontal section 22 can be formed by bending one end of the straight plate, and the rest of the straight plate is the vertical section 21. The vertical section 21 can be fixed to the fixed plate of the pulley block 1 by bolts. The horizontal section 22 extends horizontally to the connecting section 111, so that the limiting part 3 can be located at the connecting section 111 on the horizontal section 22.

[0071] Reference Figure 1 and Figure 2 As shown, in some embodiments, the connecting frame 2 includes two clamping plates, which are respectively disposed on both sides of the pulley block 1 along the axial direction and are fixedly connected to the pulley block; the limiting part 3 is fixedly connected between the two clamping plates.

[0072] With this configuration, the two clamping plates are located on both sides of the pulley block 1 along the axial direction, balancing the forces exerted by the two clamping plates on the pulley block 1 and preventing the pulley block 1 from deflecting. The limiting part 3 is connected to the two clamping plates, giving it two connection points and improving the stability of the connection between the limiting part 3 and the connecting frame 2. Furthermore, the limiting part 3 also serves as a structure connecting the two clamping plates, limiting the distance between the two clamping plates to maintain stability and preventing the clamping plates from bending and interfering with the connecting section 111.

[0073] Specifically, both clamping plates are bolted to the pulley block 1. The two clamping plates are located on both sides of the pulley block 1 along the pulley axis. The limiting part 3 is located between the two clamping plates and is connected to both clamping plates. Alternatively, the limiting part 3 can be welded to the clamping plates, or it can be bolted to the clamping plates.

[0074] In specific use, the contact wire compensation device provided in this application embodiment consists of two clamping plates connected to the fixed plate of the pulley block 1, an outer frame 31 fixedly connected to the two clamping plates, a buffer block 32 installed inside the outer frame 31, and a bearing part 33 installed in the limiting channel on the buffer block 32. The connecting section 111 passes through the limiting channel and the limiting hole of the integrated ball bearing, and is connected to a weight. When the weight swings and causes the connecting section 111 to swing, the connecting section 111 contacts the inner wall of the limiting hole, causing multiple balls 332 to rotate. The connecting section 111 is then confined within the limiting hole, reducing the movement distance of the compensation rope 11 in the wheel groove, thereby preventing the compensation rope 11 from rubbing against the side wall of the wheel groove and causing uneven wear.

[0075] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0076] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. 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 this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A contact wire compensation device, characterized in that, include: A pulley block (1) is equipped with a compensating rope (11), one end of which extends to the outside of the pulley block (1) to form a connecting section (111) for connecting a weight. A connecting frame (2) is installed on the pulley block (1); The limiting part (3) is fixed on the connecting frame (2) and has a limiting channel that passes through the limiting part (3) in the vertical direction. The connecting section (111) passes through the limiting channel to restrict the compensation rope (11) from moving relative to the pulley block (1) in the horizontal direction.

2. The contact wire compensation device according to claim 1, characterized in that, The limiting channel is provided with a bearing part (33), and the connecting section (111) passes through the bearing part (33).

3. The overhead contact line compensation device according to claim 2, characterized in that, The bearing part (33) is a rolling bearing, which includes an outer ring, an inner ring and a plurality of rolling elements. The inner ring is fitted inside the outer ring, and the plurality of rolling elements are rotatably disposed between the inner ring and the outer ring. The outer ring is connected to the inner wall of the limiting channel, and the connecting section (111) passes through the inner ring.

4. The contact wire compensation device according to claim 2, characterized in that, The bearing part (33) is an integrated ball bearing. The ball bearing includes a base (331) and a plurality of balls (332). The base (331) is fixed in the limiting channel. The base (331) is provided with a limiting hole that runs through the vertical direction. The plurality of balls (332) are evenly distributed on the hole wall of the limiting hole, and each ball (332) is rotatably connected to the hole wall of the limiting hole. The connecting section (111) passes through the limiting hole.

5. The contact wire compensation device according to claim 4, characterized in that, The diameter of the limiting hole gradually increases from the middle of the limiting hole toward both ends of the limiting hole.

6. The contact wire compensation device according to claim 1, characterized in that, The inner wall of the limiting channel and the limiting part (3) are smoothly transitioned between the two end faces opposite each other in the vertical direction by an arc-shaped surface.

7. The overhead contact line compensation device according to claim 1, characterized in that, The limiting part (3) includes an outer frame (31) and a buffer block (32); The outer frame (31) is fixedly connected to the connecting frame (2), the buffer block (32) is embedded in the inner side of the outer frame (31), and the limiting channel passes through the buffer block (32).

8. The contact wire compensation device according to claim 7, characterized in that, The buffer block (32) is a nylon block.

9. The contact wire compensation device according to claim 1, characterized in that, The connecting frame (2) includes a vertical section (21) and a horizontal section (22). The top end of the vertical section (21) is fixed to the pulley block (1). The horizontal section (22) is located at the bottom end of the vertical section (21). The horizontal section (22) extends in the horizontal direction. The limiting part (3) is installed on the horizontal section (22).

10. The contact wire compensation device according to claim 1, characterized in that, The connecting frame (2) includes two clamping plates, which are respectively disposed on both sides of the pulley group (1) along the axial direction and are fixedly connected to the pulley group; The limiting part (3) is fixedly connected between the two clamps.

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