Compensation device for renovating contact network

Abstract

The utility model relates to the technical field of electrified railway equipment, in particular to a compensation device for renovating a contact network, which comprises a compensation rope, a movable pulley, a support column and a contact network compensation device arranged on the support column, the contact network compensation device comprises a pulley support, a fixed pulley and a secondary fixed pulley are arranged on the pulley support, and the compensation rope bypasses the movable pulley. A balance weight set is installed downwards from the fixed pulley, a supporting frame is installed on the supporting column, a guide rod is installed on the supporting frame, and the balance weight set is installed on the guide rod in a sliding mode. According to the utility model, the guide column, the mounting column and other structures are used, so that the movement path of the balance weight group can be limited, the balance weight group is prevented from moving in the horizontal direction due to strong wind weather, the problems of eccentric wear and groove separation of the fixed pulley are reduced, and the safe and reliable operation of the overhead line system is ensured; and through the use of the anti-wear pulley, the problems of eccentric wear and groove separation of the fixed pulley caused by the compensation rope are further solved.

Description

Technical Field

[0001] This utility model relates to the field of electrified railway equipment technology, specifically to a catenary compensation device for improving the performance of overhead contact lines. Background Technology

[0002] The overhead contact line is a special type of power transmission line that runs along a railway line and supplies power to electric locomotives. The overhead contact line compensation device compensates for changes in the tension of the wires within the transmission line, maintaining a constant tension.

[0003] my country's electrified railways widely use pulley compensation devices. When the temperature changes, the overhead contact line expands or contracts due to temperature variations, resulting in elongation or shortening. Because pulley compensators are installed at the anchor points of the overhead contact line at both ends of the anchor section, the tension of the overhead contact line can be automatically adjusted under the weight of its weights, maintaining the slack of the line to meet technical requirements. This improves the stability and elasticity of the contact suspension, enhancing the operational quality of the overhead contact system. However, in practical applications, due to factors such as installation process, excessive anchoring angle, and weather conditions, the compensating rope may wear unevenly with the fixed pulley, or even detach from the fixed pulley groove and jam against the pulley fixing plate. This can cause inconsistent tension in the overhead contact line, affecting its technical condition and potentially leading to accidents caused by the compensating rope breaking. Furthermore, the weights are prone to swaying in windy weather, increasing wear and posing safety hazards. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a catenary compensation device. It aims to solve the safety hazards mentioned in the background art, such as the easy wear of the compensation rope on the fixed pulley and the easy swinging of the weight in strong winds caused by factors such as installation process, excessive anchoring angle, and weather.

[0005] To achieve the above technical objectives, this utility model proposes the following technical solution: a contact network compensation device, comprising a compensation rope, a movable pulley, a support column, and a contact network compensation device mounted on the support column. The contact network compensation device includes a pulley bracket, on which a main fixed pulley and a secondary fixed pulley are mounted. The compensation rope passes around the movable pulley, and a set of weights is mounted downwards on the main fixed pulley. A support frame is mounted on the support column, and a guide rod is mounted on the support frame. The set of weights is slidably mounted on the guide rod.

[0006] Furthermore, the pulley bracket has a Y-shaped structure, with the main fixed pulley installed in the middle of the pulley bracket, and an anti-wear pulley installed on one branch of the pulley bracket. A gap is left between the anti-wear pulley and the main fixed pulley for the compensation rope to pass through. The other branch of one end of the pulley bracket is connected to the support column, and the secondary fixed pulley is installed on the other end of the pulley bracket.

[0007] Furthermore, the weight assembly includes a mounting column and several weights. A support plate is installed at the bottom of the mounting column, and several weights are sequentially installed on the mounting column. The weights are provided with sliding holes that are compatible with the guide rod.

[0008] Furthermore, a washer and a locking nut are installed on the mounting post and above the weight assembly.

[0009] Furthermore, a limiting plate is detachably installed at the end of the guide rod. The limiting plate has a through hole in the middle that allows the compensation rope to pass through. The end of the compensation rope passes through the through hole and is connected to the mounting post by a clamp.

[0010] Furthermore, the top of the limiting plate and both sides of the through hole are provided with ear plates, and each ear plate is equipped with a limiting pulley. The two limiting pulleys are arranged opposite each other, and a gap is left between the two limiting pulleys for the compensation rope to pass through.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: By using structures such as guide columns and mounting columns, this utility model can restrict the movement path of the weight assembly, avoiding horizontal movement of the weight assembly due to strong winds. This not only reduces the problem of uneven wear and derailment of the main fixed pulley, but also ensures the safe and reliable operation of the contact network. Furthermore, the use of anti-wear pulleys further solves the problem of uneven wear and derailment of the main fixed pulley caused by the compensating rope. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the pulley bracket of this utility model;

[0014] Figure 3 This is the utility model Figure 1 A three-dimensional view of the structure at point A in the middle;

[0015] Figure 4 This is a schematic diagram of the structure of the weight of this utility model.

[0016] In the diagram, 1. Compensating rope; 2. Movable pulley; 3. Support column; 4. Pulley bracket; 5. Main fixed pulley; 6. Secondary fixed pulley; 7. Weight assembly; 8. Support frame; 9. Guide column; 10. Anti-wear pulley; 11. Mounting column; 12. Weight; 13. Support plate; 14. Sliding hole; 15. Washer; 16. Locking nut; 17. Limiting plate; 18. Through hole; 19. Ear plate; 20. Limiting pulley. Detailed Implementation

[0017] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figure 1-4 As shown, this utility model provides a catenary compensation device, including a compensation rope 1, a movable pulley 2, a support column 3, and a catenary compensation device installed on the support column 3. The catenary compensation device includes a pulley bracket 4, on which a main fixed pulley 5 and a secondary fixed pulley 6 are installed. The compensation rope 1 passes around the movable pulley 2, and a set of weights 7 is installed downward on the main fixed pulley 5. A support frame 8 is installed on the support column 3, and a guide rod 9 is installed on the support frame 8. The set of weights 7 is slidably installed on the guide rod 9.

[0019] like Figure 1 As shown in this embodiment, the pulley compensation structure is existing technology, and its working principle will not be elaborated further. There are two guide rods 9. The weight assembly 7 is installed on the guide rods 9, so that the running direction of the weight assembly 7 can only be along the guide rods 9. This avoids the problem of the weight assembly 7 shaking violently in windy weather, which could cause the compensation rope 1 to wear unevenly with the main fixed pulley 5 or the compensation rope 1 to come off the main fixed pulley 5, thus reducing safety hazards.

[0020] The pulley bracket 4 has a Y-shaped structure. The main fixed pulley 5 is installed in the middle of the pulley bracket 4. An anti-wear pulley 10 is installed on a branch at one end of the pulley bracket 4. A gap is left between the anti-wear pulley 10 and the main fixed pulley 5 for the compensation rope 1 to pass through. The other branch at one end of the pulley bracket 4 is connected to the support column 3. The secondary fixed pulley 6 is installed on the other end of the pulley bracket 4.

[0021] like Figure 2 As shown, limiting the horizontal space of the compensating rope 1 by the anti-wear pulley 10 and the main fixed pulley 5 can effectively solve the problem of uneven wear and derailment of the compensating rope 1 at the position of the main fixed pulley 5. Through force analysis, the compensating rope 1 and the inside of the pulley groove of the anti-wear pulley 10 or the main fixed pulley 5 are in contact with each other through a curved surface. This contact force can not only satisfy the friction force of the rotation of the anti-wear pulley 10 or the main fixed pulley 5 itself, but also provide a lateral support force for the anti-wear pulley 10 or the main fixed pulley 5, which can effectively limit the compensating rope 1 from falling out of the groove of the main fixed pulley 5.

[0022] The weight assembly 7 includes a mounting post 11 and several weights 12. A support plate 13 is fixedly installed at the bottom of the mounting post 11. Several weights 12 are sequentially installed on the mounting post 11. The weights 12 are provided with sliding holes 14 that are adapted to the guide rod 9.

[0023] like Figure 3 and Figure 4As shown, several weights 12 are mounted on the mounting column 11. The weights 12 and the support plate 13 are slidably mounted on the guide column 9 on both sides. The support plate 13 supports several weights 12. The compensating rope 1 pulls the mounting column 11 to drive the weights 12 to move along the direction of the guide rod 9, controlling the movement path of the weight group 7. This can avoid the problem of the weight group 7 swaying and causing safety hazards in windy weather.

[0024] A washer 15 and a locking nut 16 are installed on the mounting post 11 and above the weight assembly 7.

[0025] like Figure 1 As shown, the mounting post 11 is provided with external threads. Several weights 12 can be limited by the washer 15 and the locking nut 16, so that the weights 12 are stably installed on the mounting post 11.

[0026] The end of the guide rod 9 is detachably mounted with a limiting plate 17. The limiting plate 17 has a through hole 18 in the middle that allows the compensation rope 1 to pass through. The end of the compensation rope 1 passes through the through hole 18 and is connected to the mounting post 11 by a clamp.

[0027] like Figure 3 As shown, the limiting plate 17 is fixed to the guide rod 9 by a nut. The limiting plate 17 is used to prevent the weight assembly 7 from sliding out of the guide post. After removing the limiting plate 17 from the guide post 9, the wire clamp is opened to separate the compensation rope 1 from the mounting post 11, which makes it easy to replace and add or remove the weight 12.

[0028] The top of the limiting plate 17 and both sides of the through hole 18 are provided with ear plates 19, and each ear plate 19 is equipped with a limiting pulley 20. The two limiting pulleys 20 are arranged opposite to each other, and a gap is left between the two limiting pulleys 20 for the compensation rope 1 to pass through.

[0029] like Figure 3 As shown, to prevent the lower compensating rope 1 from swaying due to external forces and causing uneven wear on the through hole 18, in this embodiment, two limiting pulleys 20 are installed so that the compensating rope 1 passes through the gap between the two limiting pulleys 20. When the compensating rope 1 extends or retracts, it can move along the two limiting pulleys 20, limiting the lateral displacement of the limiting pulleys 20, so that the compensating rope 1 always moves in the vertical direction, effectively preventing the compensating rope 1 from touching the through hole 18.

[0030] Operating principle: When the temperature changes, the cord expands or contracts due to thermal changes, resulting in elongation or shortening. The compensating rope 1 passes between the main fixed pulley 5 and the anti-wear pulley 10, keeping the compensating rope 1 running vertically. This effectively limits the uneven wear caused by the compensating rope 1 on the main fixed pulley 5 and prevents it from falling out of the groove of the main fixed pulley 5. At the same time, the compensating rope 1 pulls the mounting column 11, causing the weight assembly 7 to move along the direction of the guide rod 9, preventing the weight assembly 7 from moving horizontally. This avoids the safety hazard caused by the weight assembly 7 swaying in strong winds. Through the two relatively set limiting pulleys 20, the compensating rope 1 above the through hole can always move vertically, preventing the compensating rope 1 from deviating and touching the inner wall of the through hole 18 due to external forces, thus preventing wear on the through hole 18.

[0031] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A contact network compensation device, comprising a compensation rope (1), a movable pulley (2), a support column (3), and a contact network compensation device mounted on the support column (3), the contact network compensation device comprising a pulley bracket (4), a main fixed pulley (5) and a secondary fixed pulley (6) mounted on the pulley bracket (4), the compensation rope (1) passing over the movable pulley (2), and a set of weights (7) mounted downwards on the main fixed pulley (5), characterized in that: A support frame (8) is installed on the support column (3), and a guide rod (9) is installed on the support frame (8). The weight assembly (7) is slidably installed on the guide rod (9).

2. The overhead contact line compensation device according to claim 1, characterized in that: The pulley bracket (4) has a Y-shaped structure. The main fixed pulley (5) is installed in the middle of the pulley bracket (4). An anti-wear pulley (10) is installed on one branch of the pulley bracket (4). A gap is left between the anti-wear pulley (10) and the main fixed pulley (5) for the compensation rope (1) to pass through. The other branch of one end of the pulley bracket (4) is connected to the support column (3). The secondary fixed pulley (6) is installed on the other end of the pulley bracket (4).

3. The overhead contact line compensation device according to claim 1, characterized in that: The weight assembly (7) includes a mounting post (11) and several weights (12). A support plate (13) is installed at the bottom of the mounting post (11). Several weights (12) are installed on the mounting post (11) in sequence. The weights (12) are provided with sliding holes (14) that are compatible with the guide rod (9).

4. The overhead contact line compensation device according to claim 3, characterized in that: A washer (15) and a locking nut (16) are installed on the mounting post (11) and above the weight assembly (7).

5. The overhead contact line compensation device according to claim 2, characterized in that: The end of the guide rod (9) is detachably mounted with a limiting plate (17). The limiting plate (17) has a through hole (18) in the middle that allows the compensation rope (1) to pass through. The end of the compensation rope (1) passes through the through hole (18) and is connected to the mounting post (11) by a clamp.

6. The overhead contact line compensation device according to claim 5, characterized in that: The top of the limiting plate (17) and both sides of the through hole (18) are provided with ear plates (19), and each ear plate (19) is equipped with a limiting pulley (20). The two limiting pulleys (20) are arranged opposite to each other, and a gap is left between the two limiting pulleys (20) for the compensation rope (1) to pass through.

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