Pressure self-compensation self-provided power supply type contact line grinding machine

Abstract

The utility model discloses a pressure self-compensation self-provided power source type contact line grinding machine which comprises a machine frame, a grinding mechanism, an angle adjusting mechanism, a grinding compensation mechanism, a walking mechanism and a control cabinet. A busbar is arranged below the walking mechanism; the rack comprises a left side plate, a supporting cross beam and a right side plate; the walking mechanism comprises small wheels and large wheels; the grinding compensation mechanism comprises an air cylinder, a thrust rod, a spring, a fixing block and a limiting nut. The cylinder is fixed on the left side plate and the right side plate and is connected with the control cabinet; the grinding mechanism comprises a grinding machine, a fixing plate, a sliding block and a guide rail. The angle adjusting mechanism comprises an adjusting nut, an indicating piece, a scale plate and a limiting bolt. According to the utility model, pressure is compensated through the spring, so that continuous pressure self-compensation is realized; and meanwhile, the pressing force of the grinding piece is accurately adjusted by adjusting the compression amount of the spring, the structural form of pressure compensation is simplified, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a contact wire polishing machine in the field of urban rail power supply technology, and more particularly to a pressure self-compensating self-powered contact wire polishing machine. Background Technology

[0002] The underground subway lines use an overhead rigid contact network, which fully demonstrates its advantages. However, the contact wire wears out relatively quickly in certain areas, causing irregular wear on the pantograph's carbon contact plate. After years of operation and maintenance following its widespread application in China, the overhead rigid contact network system has revealed the following problems with its contact wires: uneven wear; faster wear in acceleration sections; and an uneven working surface. Wear is particularly pronounced when the train passes through key sections such as non-support joints, switch points, sharp curves, intermediate joints, and section insulators, resulting in an uneven working surface and traces of arcing.

[0003] The impact of uneven wear on the contact wire on operation is as follows: (1) Deterioration of the pantograph-catenary relationship. Uneven wear on the contact wire leads to an uneven working surface, and the contact pressure between the pantograph and the contact wire will change significantly. This makes it easy for sparks to occur between the contact wire and the pantograph, and even arcing. Such sparks or arcing between the pantograph and the catenary will have an adverse effect on the traction power supply system (catenary, substation equipment) and electric locomotives; (2) Shortened replacement cycle of the contact wire, increasing operation and maintenance costs. Uneven wear on the contact wire will cause the local wear depth of the contact wire to reach the life limit. At this time, the only solution is to replace part or the entire anchor section of the contact wire (an anchor section without temperature compensation device is about 250m long). Therefore, if the contact wire is not maintained in time, it will aggravate the wear of the contact wire and the pantograph, leading to an increase in operation and maintenance costs. In severe cases, it will affect train operation. Without curbing this phenomenon, safe operation cannot be ensured.

[0004] In response to abnormal wear of contact wires, grinding has become the primary maintenance method. Previously, various operating companies mainly used manual grinding, but now they are gradually starting to use contact wire grinding machines. While current contact wire grinding machines on the market can meet basic grinding requirements, they still have many problems: the machines are bulky, operation is complex, the grinding pressure remains constant and cannot be adjusted according to site conditions and grinding results, and the grinding mechanism requires an external power supply, necessitating the use of an engineering vehicle for power during operation. This not only poses some safety hazards but also results in significant operating costs.

[0005] To solve the above problems, there is a need for a contact wire grinding machine that is efficient, convenient, and easy to perform pressure self-compensation. Utility Model Content

[0006] Purpose of the utility model: To address the shortcomings of existing technologies, this utility model discloses a pressure self-compensating and self-powered contact wire grinder. By compensating for pressure with a spring, continuous pressure self-compensation is achieved. At the same time, by adjusting the compression of the spring, the clamping force of the grinding disc is precisely adjusted, simplifying the pressure compensation structure and improving efficiency. The replaceable power supply of the grinder solves the limitation of traditional grinders that require an external power supply.

[0007] Technical solution: This utility model of a pressure self-compensating self-powered contact wire polishing machine includes a frame, a polishing mechanism, an angle adjustment mechanism, a polishing compensation mechanism, a walking mechanism, and a control cabinet; a busbar is located below the walking mechanism;

[0008] The frame includes a left side panel, a support beam, and a right side panel;

[0009] The walking mechanism includes small wheels and large wheels, which are mounted on the left and right side plates. The small wheels are in contact with the lower end plane of the busbar, and the large wheels are in contact with the V-shaped groove at the bottom of the busbar.

[0010] The grinding compensation mechanism includes a cylinder, a thrust rod, a spring, a fixing block, and a limit nut; the cylinder is fixed on the left and right side plates and is connected to the control cabinet; the thrust rod extends outward from the cylinder; the spring and the fixing block are sleeved on the thrust rod; the top of the spring is in contact with the lower end face of the fixing block; the thrust rod is provided with a limit nut located above the fixing block;

[0011] The grinding mechanism includes a grinding machine, a fixed plate, a slider, and a guide rail; the grinding machine is fixed on the fixed plate, which is located on a fixed block; the slider is fixed on the fixed plate and embedded in the guide rail, which is fixed on the frame.

[0012] The angle adjustment mechanism includes an adjusting nut, an indicator plate, a scale plate, and a limit bolt; the scale plate is set on the fixed plate, the indicator plate is fixed on the grinder, the adjusting nut connects the fixed plate and the grinder, and the adjusting nut adjusts the angle of the grinder.

[0013] A step is provided below the thrust rod, and the bottom of the spring is in contact with the upper surface of the step.

[0014] The control cabinet includes air pipes, cabinet body, switches and air compressor; the switches control the start and stop of the air compressor.

[0015] The air compressor is a replaceable power supply type.

[0016] The upper surface of the fixing block is in contact with the bottom of the limiting nut, and the limiting nut provides a limiting position.

[0017] The large wheel is a V-shaped wheel that fits into the V-shaped groove at the bottom of the busbar, thus playing a role in limiting and guiding the walking mechanism.

[0018] The fixing block has a round hole, and the fixing block is fitted onto the thrust rod through the round hole.

[0019] The grinder is equipped with its own power supply. When installing the hemp grinder body, remove the battery first, and then plug the battery back in after the machine body is installed, which reduces the weight of the machine body during installation.

[0020] The grinding machines are arranged in an X-shape to facilitate grinding on both sides of the contact line.

[0021] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0022] (1) This utility model adopts a grinding compensation mechanism, which realizes continuous pressure self-compensation through the spring pressure compensation structure. At the same time, the pressing force of the grinding disc is precisely adjusted by adjusting the compression of the spring, which simplifies the pressure compensation structure, reduces weight, and improves efficiency.

[0023] (2) This utility model solves the limitation of traditional grinders requiring external power supply by using a grinder mechanism composed of three grinders with interchangeable power supplies and independent control switches. At the same time, the grinders with three independent control switches have higher adaptability to working conditions and are more portable and efficient.

[0024] (3) In this utility model, each grinding component and air compressor are powered by an independent, universal, and modular power supply. Since the electrical energy required for the operation of each part is different, the distributed power supply avoids fluctuations in the overall working power caused by battery power fluctuations. At the same time, the weight of the battery is distributed. When installing the grinding machine body, the battery is removed first, and the battery is quickly plugged in after the machine body is installed, so as to reduce the weight of the body during installation and improve the convenience of installation.

[0025] (4) This utility model is equipped with a rechargeable air compressor and integrated into the control box for easy carrying and handling, improving the convenience and lightweight of the equipment. It has the advantages of novel design, high degree of automation and high grinding efficiency. Attached Figure Description

[0026] Figure 1 This is a front view of the pressure self-compensating self-powered contact wire polishing machine of this utility model.

[0027] Figure 2 This is a left view of the pressure self-compensating self-powered contact wire polishing machine of this utility model.

[0028] Figure 3 This is a partial schematic diagram of the pressure self-compensating and self-powered contact wire polishing machine of this utility model;

[0029] Figure 4 This is a schematic diagram of the frame structure in this utility model;

[0030] Figure 5 This is a schematic diagram of the grinding compensation mechanism in this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the fixing block in this utility model. Detailed Implementation

[0032] This utility model relates to a pressure-compensating, self-powered contact wire polishing machine, comprising a frame 10, a polishing mechanism 20, an angle adjustment mechanism 30, a polishing compensation mechanism 40, a traveling mechanism 50, a control cabinet 60, and a replaceable power supply. The angle adjustment mechanism 30 is fixed to the polishing mechanism 20 and is used to adjust the angle of the polishing head. The polishing mechanism 20 is fixed to a fixing block of the polishing compensation mechanism 40, and pressure compensation during the polishing process is achieved by controlling the polishing compensation mechanism 40. The polishing compensation mechanism 40 and the traveling mechanism 50 are fixed to the frame 10.

[0033] The grinding mechanism 20 includes three replaceable power grinders, each with its own independent start switch. The frame 10 includes a left side plate 101 and a right side plate 102, which are fixed by several support beams 103. A handle 104 is fixed to the left side plate 101 and the right side plate 102.

[0034] The traveling mechanism 50 consists of two pairs of small wheels 501 and two pairs of large wheels 502. The small wheels 501 and large wheels 502 are mounted opposite each other on the left side plate 101 and right side plate 102 of the frame 10. The small wheels 501 are in contact with the lower end plane a of the busbar 701, and the large wheels 502 are V-shaped wheels that are in contact with the V-shaped groove b at the bottom of the busbar, which serves to limit and guide the traveling mechanism. The close contact between the small wheels 501 and large wheels 502 and the busbar 701 allows the entire traveling mechanism 50 to roll on the busbar 701.

[0035] The grinding compensation mechanism 40 consists of a cylinder 401, a thrust rod 402, a spring 403, a fixing block 404, and a limiting nut 405. The cylinder 401 is fixed to the side plates 101 and 102 of the frame 10 and connected to the control cabinet 60 via an air pipe 601. The thrust rod 402 is placed in the cylinder 401 and pushed upwards by the pressure of the air pipe 601. A step c is provided in the middle of the thrust rod 402, and a limiting nut 405 is provided at the top. The fixing block 404 has a round hole through which it fits onto the thrust rod 402, with its upper end face contacting the limiting nut 405. The spring 403 is fitted onto the thrust rod 402, with its bottom contacting the upper end face of the step c and its top contacting the lower end face of the fixing block 404. By adjusting the position of the limiting nut 405 on the thrust rod 402, the compression of the spring is adjusted, thereby precisely adjusting the clamping force of the grinding disc.

[0036] The grinding mechanism 20 consists of a grinder 201, a fixed plate 202, a slider 203, and a guide rail 204. The grinder 201 is fixed on the fixed plate 202, which is fixed to the fixed block 404 of the grinding compensation mechanism 40. When the push rod 402 is pushed upward, the spring 403 is deformed by force, generating an upward thrust that pushes the fixed block 404 upward, thus forming continuous pressure self-compensation, which in turn drives the grinder 20 as a whole upward. The slider 203 is fixed on the fixed plate 202 and embedded in the guide rail 204, which is fixed to the side plate of the frame 10, forming a guiding function.

[0037] The polisher 201 is pushed upwards, and polishing begins when its polishing disc d contacts the contact wire 702 embedded in the busbar 701. In this embodiment, the three polishers 201 are equipped with independently controlled switches e, which can be controlled separately. Each polisher also has a replaceable power supply f, eliminating the need for an external power source and enabling continuous power supply with sufficient batteries.

[0038] The angle adjustment mechanism 30 consists of an adjusting nut 301, an indicator plate 302, a scale plate 303, and a limiting bolt 304. The scale plate 303 is fixed on the fixed plate 202, the indicator plate is fixed on the grinder 201, and the adjusting nut 301 connects the fixed plate 202 and the grinder 201. The angle of the grinder 201 can be adjusted by adjusting the nut 301.

[0039] The control cabinet 60 consists of an air pipe 601, a cabinet body 602, a switch 603, and a replaceable power supply air compressor 604. The switch 603 is located on the cabinet body 602 and is connected to the replaceable power supply air compressor 604, controlling its start and stop. The replaceable power supply air compressor 604 is equipped with a pressure adjustment button g and a replaceable power supply h, allowing the compressor to operate continuously when there are sufficient batteries. The control cabinet 60 is connected to the grinding compensation mechanism via the air pipe, thereby providing continuous pressure to the grinding compensation mechanism.

[0040] To ensure the passability of this invention at narrow insulated joints of rigid contact wires, the grinding machines on both sides are arranged in an X-shape. The grinding disc on the left grinds the sharp corner on the right side of the contact line, and the grinding disc on the right grinds the sharp corner on the left side of the contact line.

Claims

1. A pressure-compensating, self-powered contact wire polishing machine, characterized in that: It includes a frame (10), a grinding mechanism (20), an angle adjustment mechanism (30), a grinding compensation mechanism (40), a walking mechanism (50), and a control cabinet (60); the walking mechanism (50) has a busbar (701) below it; The frame (10) includes a left side plate (101), a support beam (103), and a right side plate (102); The walking mechanism (50) includes a small wheel (501) and a large wheel (502), which are mounted on the left side plate (101) and the right side plate (102). The small wheel (501) is in contact with the lower end plane (a) of the busbar (701), and the large wheel (502) is in contact with the V-shaped groove at the bottom of the busbar (701). The grinding compensation mechanism (40) includes a cylinder (401), a thrust rod (402), a spring (403), a fixing block (404), and a limiting nut (405); the cylinder (401) is fixed on the left side plate (101) and the right side plate (102), and the cylinder (401) is connected to the control cabinet (60); the thrust rod (402) extends outward from the cylinder (401); the spring (403) and the fixing block (404) are sleeved on the thrust rod (402); the top of the spring (403) is in contact with the lower end face of the fixing block (404); the thrust rod (402) is provided with a limiting nut (405) located above the fixing block (404); The grinding mechanism (20) includes a grinding machine (201), a fixed plate (202), a slider (203), and a guide rail (204); the grinding machine (201) is fixed on the fixed plate (202), and the fixed plate (202) is located on the fixed block (404); the slider (203) is fixed on the fixed plate (202) and embedded in the guide rail (204), and the guide rail (204) is fixed on the frame.

2. The pressure self-compensating self-powered contact wire polishing machine according to claim 1, characterized in that: The angle adjustment mechanism (30) includes an adjusting nut (301), an indicator plate (302), a scale plate (303), and a limiting bolt (304); the scale plate (303) is mounted on the fixed plate (202), the indicator plate (302) is fixed on the grinder (201), the adjusting nut (301) connects the fixed plate (202) and the grinder (201), and the adjusting nut (301) adjusts the angle of the grinder (201).

3. The pressure self-compensating self-powered contact wire polishing machine according to claim 1, characterized in that: A step is provided below the thrust rod (402), and the bottom of the spring (403) is in contact with the upper end surface of the step.

4. The pressure self-compensating self-powered contact wire polishing machine according to claim 1, characterized in that: The control cabinet (60) includes an air pipe (601), a cabinet body (602), a switch (603), and an air compressor; the switch (603) controls the start and stop of the air compressor.

5. The pressure self-compensating self-powered contact wire polishing machine according to claim 4, characterized in that: The air compressor is a swappable power supply type air compressor.

6. The pressure self-compensating self-powered contact wire polishing machine according to claim 1, characterized in that: The upper end face of the fixing block (404) is in contact with the bottom of the limiting nut (405).

7. The pressure self-compensating self-powered contact wire polishing machine according to claim 1, characterized in that: The large wheel (502) is a V-shaped wheel that fits into the V-shaped groove at the bottom of the busbar.

8. The pressure self-compensating self-powered contact wire polishing machine according to claim 1, characterized in that: The fixing block (404) is provided with a round hole, and the fixing block (404) is sleeved on the thrust rod (402) through the round hole.

9. The pressure self-compensating self-powered contact wire polishing machine according to claim 1, characterized in that: The grinder (201) is equipped with its own power supply.

10. The pressure self-compensating self-powered contact wire polishing machine according to claim 1, characterized in that: The grinding machine (201) is arranged in an X-shaped cross pattern.

Images