Walking device suitable for rigid contact line surface treatment system

Abstract

This application relates to the field of rail power supply technology processing, and discloses a traveling device suitable for a rigid contact wire surface treatment system. The traveling device includes swing arms, traveling wheels, a lever, and a self-resetting assembly. Two swing arms are arranged opposite each other on both sides of the traveling direction of the rigid contact wire surface treatment system, and the two swing arms are hinged to a frame. Two sets of traveling wheels are mounted opposite each other on the first ends of the two swing arms. By operating the lever, the second ends of the two swing arms move inwards towards each other, simultaneously causing the two sets of traveling wheels to move outwards towards each other until the open position. Driven by the self-resetting assembly, the lever resets, and the two sets of traveling wheels move inwards towards each other until the working position, simultaneously causing the second ends of the two swing arms to move outwards towards each other. The two sets of traveling wheels can move between the working position and the open position under the control of the lever and the self-resetting assembly. This application has a simple structure and is easy to use.

Description

Technical Field

[0001] This application relates to the field of rail power supply technology processing, and in particular to a walking device suitable for a rigid contact wire surface treatment system. Background Technology

[0002] In recent years, with the continuous improvement of people's living standards and the advancement of rural urbanization, a large number of urban populations have poured into cities. Compared with public transportation, rail transit has many advantages such as large carrying capacity, fast speed and good safety. Therefore, many cities have carried out the construction of urban rail transit in order to alleviate traffic pressure.

[0003] For subway power supply systems, flexible overhead contact lines or third rails are generally used in subway depots and elevated sections; rigid overhead contact lines or third rails are generally used in underground tunnel sections. Each of these three power supply methods—flexible, rigid, and third rails—has its own advantages and disadvantages. Rigid overhead contact lines mainly consist of overhead rigid busbars, contact wires, support and positioning devices, insulation components, and overhead ground wires. Due to their simple structure, tension-free contact wires, lack of risk of wire breakage, and ease of maintenance, they are widely used in subway tunnel sections; that is, most major subway tunnel sections in China use rigid overhead contact lines for power supply. When using third rail power supply, the vehicle draws current through contact shoes; when using flexible or rigid overhead contact lines, the vehicle draws current through direct contact between the pantograph and the contact wire.

[0004] This article primarily discusses the rigid contact wire power supply method, where the key determining factor is the dynamic matching degree between the contact wire and the pantograph. Therefore, daily inspection and maintenance of the contact wire are crucial. Common faults mainly include: abnormal wear of the contact wire in local sections, arcing at insulation joints and misaligned joints, insulator misalignment, and busbar twisting and deformation. These problems significantly accelerate the wear of the contact wire and pantograph, leading to increased operation and maintenance costs. In severe cases, they can affect train operation and consequently the operation of the entire line.

[0005] Uneven wear of the rigid overhead contact line is a common problem encountered during operation and maintenance. During train operation, especially during acceleration phases, the train sways rapidly, causing pantograph vibration and a large current flow between the pantograph and the contact line. This leads to the contact line heating up and softening, accelerating wear on both the contact line and the pantograph, resulting in an uneven, rough surface. To address this abnormal wear and avoid negatively impacting train operation, manual polishing of the contact line is currently employed to ensure a smooth surface and mitigate abnormal wear.

[0006] To address the aforementioned problems, Chinese Utility Model Patent (Authorization Announcement No.: CN208601227U) discloses a contact wire polishing machine for rigid contact wires. It includes a frame and a traveling mechanism and a polishing mechanism respectively mounted on the frame. The polishing mechanism includes a polishing motor and polishing wheels driven by the motor. The traveling mechanism includes four pairs of traveling wheels mounted at the four corners of the frame, with the wheel surfaces of each pair of traveling wheels facing each other to form a clamping portion. The polishing wheels are mounted in the middle of the frame, and the axial direction of the polishing wheels is perpendicular to the axial direction of the traveling wheels so that the rotation direction of the polishing wheels is perpendicular to the traveling direction of the frame. The four pairs of traveling wheels include four small wheels and four large wheels. Four small wheels are mounted on the front and rear ends of the two side plates via short shafts, and four large wheels are mounted on long shafts directly below the four small wheels. The wheel surfaces of each large wheel and each small wheel face each other and form the clamping part, which facilitates the installation of the grinder on the busbar of the rigid contact network. The distance between the two small wheels located at the same end of the two side plates is adjustable. The operator adjusts the support shafts of the four small wheels to adjust the distance between the two small wheels located at the same end of the two side plates, so that the four small wheels and the four large wheels are matched and installed on the busbar of the rigid contact network. The wheel surfaces of each large wheel and each small wheel face each other to clamp the lower boss of the busbar, so that the grinder moves forward on the busbar by the rotation of the four large wheels. The advantages of this patent are: scientific design, reduced manual operation, reduced labor intensity, good safety, and improved grinding accuracy and efficiency. However, the patent still has some disadvantages: when installing the four small wheels on the busbar, the grinding machine must first be lifted to the busbar as a whole, and then the four small wheels are installed one by one through the shaft. This installation method is extremely inconvenient and time-consuming.

[0007] In summary, there is an urgent need to develop a new type of walking mechanism for rigid contact wire grinding machines to solve the aforementioned technical problems. Summary of the Invention

[0008] The purpose of this application is to overcome the shortcomings of the prior art and provide a walking device that is reasonably designed, simple in structure and easy to use, suitable for rigid contact wire surface treatment systems.

[0009] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0010] A traveling device for a rigid contact wire surface treatment system, the traveling device being mounted on the frame of the rigid contact wire surface treatment system;

[0011] The walking device includes a swing arm, walking wheels, a lever, and a self-resetting component;

[0012] There are two swing arms, which are arranged opposite each other on both sides of the travel direction of the rigid contact line surface treatment system, and the two swing arms are hinged to the frame.

[0013] The walking wheels are in two sets, and the two sets of walking wheels are mounted opposite each other at the first ends of the two swing arms;

[0014] The lever is configured such that by manipulating the lever, the second ends of the two swing arms move inward toward each other, and simultaneously the two sets of walking wheels mounted on the first ends of the two swing arms move outward toward opposite sides until the open position is reached.

[0015] The self-resetting component is configured such that when the lever is moved by an external force and the external force disappears, under the drive of the self-resetting component, the lever resets and the two sets of traveling wheels installed at the first ends of the two swing arms move toward each other towards the inward side until the working position is reached, and at the same time, the second ends of the two swing arms move toward each other towards the outward side.

[0016] The two sets of wheels can move between the working position and the open position under the control of the lever and the self-resetting assembly, so as to realize the assembly or disassembly of the rigid contact line surface treatment system and the busbar.

[0017] Furthermore, an inwardly concave arc surface is formed on the outer side of the second end of each of the two swing arms, the concavity depth of the two arc surfaces gradually decreases from top to bottom, and an opening is provided at the second end of each of the two swing arms.

[0018] The actuating lever is horizontally positioned between the two swing arms. Both ends of the actuating lever pass through the two openings and can slide up and down within the openings. Each end of the actuating lever is also provided with a set of pressing parts. Under the drive of the actuating lever, the two sets of pressing parts can move up and down along the corresponding arc surfaces, thereby pressing the second ends of the two swing arms to swing around the hinge between the corresponding swing arms and the frame. This drives the second ends of the two swing arms to move inward toward each other, while simultaneously causing the two sets of traveling wheels installed at the first ends of the two swing arms to move outward toward each other until the open position is reached.

[0019] Furthermore, the pressing part is a roller, which is rotatably mounted on the end of the actuating lever.

[0020] Furthermore, the self-resetting component includes a first elastic element and a second elastic element;

[0021] The first elastic element is disposed between the actuating rod and the frame. Under the elastic force of the first elastic element, the two ends of the actuating rod press against the uppermost part of the corresponding opening and / or the actuating rod drives the two sets of the pressing parts to be in the deepest recess of the corresponding arc surface, so that the second ends of the two swing arms can move outwards to the outermost position, and cause the two sets of walking wheels installed at the first ends of the two swing arms to move inwards to the working position.

[0022] The second elastic element is disposed between the first end of the two swing arms and the frame. Under the elastic force of the second elastic element, the two sets of walking wheels installed at the first end of the two swing arms can move inward toward each other to the working position.

[0023] Furthermore, each of the two swing arms is provided with a first limiting part. When the two sets of traveling wheels move to the working position, the two first limiting parts just come into contact with the corresponding second limiting parts provided on the frame, so that the two sets of traveling wheels can accurately move to the working position and be limited in the working position.

[0024] Furthermore, the walking device also includes a locking component, which is configured to lock the two sets of walking wheels in the working position after the two sets of walking wheels have moved to the working position.

[0025] Furthermore, the locking assembly includes a knob plunger and a plunger hole. The knob plunger is disposed on the frame, and the plunger hole is formed on the swing arm. There are two sets of locking assemblies, and the two sets of locking assemblies are respectively arranged in a one-to-one correspondence with the two swing arms. When the two sets of traveling wheels move to the working position, the front end of the knob plunger extends into the plunger hole to lock the swing arm and the frame together, thereby locking the two sets of traveling wheels in the working position.

[0026] Furthermore, the walking device also includes an auxiliary rod, which is arranged parallel to the actuating rod on the frame and located below the actuating rod.

[0027] Furthermore, the walking device also includes positioning wheels mounted on the frame. During operation, the positioning wheels act within the grooves at the bottom of the busbar, and the walking wheels act on the shoulders on both sides of the busbar. The positioning wheels and the walking wheels cooperate to allow the frame to slide and clamp onto the busbar.

[0028] Furthermore, the walking device is a multiple set, and the multiple sets of walking devices are arranged on the frame along the traveling direction of the rigid contact line surface treatment system.

[0029] Compared with the prior art, the beneficial effects of this application are:

[0030] 1. This application is designed with swing arms and a lever. By operating the lever, the two swing arms can be moved, and the two sets of traveling wheels can be moved between the working position and the open position to facilitate the assembly or disassembly of the rigid contact line surface treatment system and the busbar.

[0031] 2. This application is designed with a self-resetting component. When the lever is moved by an external force and the external force disappears, the lever can automatically reset under the drive of the self-resetting component, and the two sets of wheels can automatically reset to the working position.

[0032] 3. In this application, a limiting part (i.e., a first limiting part and a second limiting part) is provided between the swing arm and the frame, which enables the two sets of traveling wheels to swing and position accurately and quickly to the working position.

[0033] 4. This application includes a locking component that can lock the positions of the two sets of wheels after they have moved to the working position. This improves the stability of the structure and ensures that the wheels will not slip off the busbar during operation, thus enhancing safety. Attached Figure Description

[0034] To make the advantages of this application more readily understood, the application briefly described above will be described in more detail with reference to the specific embodiments shown in the accompanying drawings. It is to be understood that these drawings depict only typical embodiments of this application and should not be considered as limiting its scope of protection. The application is described and explained with additional features and details through the drawings.

[0035] Figure 1 This is a three-dimensional structural diagram of the walking device of this application;

[0036] Figure 2 for Figure 1 A partial structural diagram.

[0037] The attached figures are labeled as follows:

[0038] 1-Rack;

[0039] 2-Swing arm, 201-Curved surface, 202-Opening;

[0040] 3-Walking wheels;

[0041] 4-Actuating lever, 401-Extrusion section;

[0042] 5-First elastic element;

[0043] 6-Second elastic element;

[0044] 7-Auxiliary rod;

[0045] 8-Positioning wheels;

[0046] 9- Knob plunger. Detailed Implementation

[0047] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0048] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may be available in addition to these detailed descriptions.

[0049] In the description of this application, the term "A and / or B" means all possible combinations of A and B, such as only A, only B, or A and B. The terms "at least one A or B" or "at least one of A and B" have a similar meaning to "A and / or B" and can include only A, only B, or A and B. The singular terms "a" or "this" can also include plural forms. The terms "inner side," "outer side," "longitudinal," "lateral," "upper," "lower," "top," "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and do not require this application to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0050] The embodiments of this application will be described in further detail below with reference to the accompanying drawings:

[0051] Example 1

[0052] like Figure 1 and Figure 2As shown, this application provides a walking device suitable for a rigid contact wire surface treatment system. The walking device is installed on the frame 1 of the rigid contact wire surface treatment system, so that the rigid contact wire surface treatment system can slide on the busbar by relying on the walking device. The frame 1 is composed of two long plates and multiple short rods. The two long plates are arranged opposite each other, and the multiple short rods are distributed between the two long plates and fix the two long plates together to form a stable frame.

[0053] In this embodiment, as Figure 1 and Figure 2 As shown, the traveling device includes swing arms 2, traveling wheels 3, actuating lever 4, and a self-resetting assembly. There are two swing arms 2, positioned opposite each other on both sides of the traveling direction of the rigid contact wire surface treatment system, with their middle portions hinged to the outer sides of two long plates of the frame 1. There are two sets of traveling wheels 3, each set containing at least one wheel, rotatably mounted on the first ends of the two swing arms 2. The actuating lever 4 is configured such that, by operating the lever 4, the second ends of the two swing arms 2 move inwards towards each other, simultaneously causing the two sets of traveling wheels 3 mounted on the first ends of the two swing arms 2 to move outwards towards each other until they reach the open position. The self-resetting assembly is configured such that, when the actuating lever 4 is moved by an external force and the force disappears, the lever 4 resets under the drive of the self-resetting assembly, and the two sets of traveling wheels 3 mounted on the first ends of the two swing arms 2 move inwards towards each other until they reach the working position, simultaneously causing the second ends of the two swing arms 2 to move outwards towards each other. The two sets of wheels 3 can move between the working position and the open position under the control of the lever 4 and the self-resetting component, so as to realize the assembly or disassembly of the rigid contact line surface treatment system and the busbar.

[0054] The connection structure between the swing arm 2 and the lever 4 is as follows:

[0055] like Figure 1 and Figure 2As shown, the outer sides of the second ends of the two swing arms 2 are respectively formed with an inwardly concave arc surface 201, and the concavity depth of the two arc surfaces 201 gradually decreases from top to bottom. The second ends of the two swing arms 2 are respectively provided with an opening 202. The actuating rod 4 is in the shape of a round rod and is placed horizontally between the two swing arms 2. Two elongated holes are symmetrically opened on the two long plates of the frame 1. The two ends of the actuating rod 4 pass through the two elongated holes and through the two openings 202, and the two ends of the actuating rod 4 can also slide up and down in the two openings 202 respectively. Both ends of the lever 4 are provided with a set of pressing parts 401. Preferably, the pressing parts 401 are rollers. Each set of pressing parts 401 can be designed with two rollers, and the two rollers are symmetrically rotated and installed on both sides of the end of the lever 4. Under the drive of the lever 4, the two sets of pressing parts 401 can move up and down along the corresponding arc surface 201, thereby pressing the second ends of the two swing arms 2 to swing around the hinge of the corresponding swing arm 2 and the frame 1, so as to drive the second ends of the two swing arms 2 to move inward towards each other. At the same time, the linkage causes the two sets of traveling wheels 3 installed at the first ends of the two swing arms 2 to move outward towards each other until the open position.

[0056] The specific structure of the self-resetting component is as follows:

[0057] like Figure 1 and Figure 2 As shown, the self-resetting assembly includes a first elastic element 5 and a second elastic element 6. The first elastic element 5 and the second elastic element 6 include, but are not limited to, one or more of a spring, a sheet, or a rubber element with elastic deformation, and the first elastic element 5 and the second elastic element 6 are preferably springs.

[0058] The first elastic element 5 is disposed between the actuating lever 4 and the frame 1. There can be one or two first elastic elements 5 in each set of walking devices. If one first elastic element 5 is used, it is disposed between the two long plates of the frame 1. Specifically, a bearing plate can be disposed between the two long plates. The bearing plate is located below the actuating lever 4. The first elastic element 5 is vertically connected between the middle of the bearing plate and the middle of the actuating lever 4. If two first elastic elements 5 are used, they are symmetrically disposed at both ends of the actuating lever 4. Specifically, a connecting seat can be disposed on the outer side of each of the two long plates. The two connecting seats are located below the two ends of the actuating lever 4 respectively. The two first elastic elements 5 are respectively installed between the corresponding connecting seat and the end of the actuating lever 4. Under the elastic force of the first elastic element 5, the two ends of the lever 4 press against the uppermost part of the corresponding opening 202 and / or the lever 4 drives the two sets of pressing parts 401 to the deepest recess of the corresponding arc surface 201, so that the second ends of the two swing arms 2 can move outwards to the outermost position, and cause the two sets of traveling wheels 3 installed at the first ends of the two swing arms 2 to move inwards to the working position.

[0059] The second elastic element 6 is disposed between the first ends of the two swing arms 2 and the frame 1. Each set of traveling devices can have one or two second elastic elements 6. If one second elastic element 6 is used, it is disposed between the first ends of the two swing arms 2. Specifically, two circular holes can be symmetrically opened on the two long plates of the frame 1, and the two ends of the second elastic element 6 pass through the corresponding circular holes and are fixedly connected to the first ends of the two swing arms 2 respectively. If two second elastic elements 6 are used, they are symmetrically disposed between the corresponding long plates and the swing arms 2, and the second elastic elements 6 cause the swing arms 2 to fit against the outer side of the corresponding long plates. Alternatively, the two second elastic elements 6 can be used in conjunction with an elastic element mounting post. The first ends of the two elastic element mounting posts are fixed to the outer sides of the two long plates, and the first ends of the two swing arms 2 each have a hole. The second ends of the two elastic element mounting posts extend outward through the corresponding holes, and each second end of the two elastic element mounting posts has an end cap. The two second elastic elements 6 are respectively fitted onto the corresponding elastic element mounting posts, and the two second elastic elements 6 are respectively compressed between the corresponding end caps and the outer surfaces of the swing arms 2. Under the elastic force of the second elastic element 6, the two sets of traveling wheels 3 installed at the first ends of the two swing arms 2 can move inward toward each other to the working position.

[0060] Preferably, each of the two swing arms 2 is provided with a first limiting part. When the two sets of traveling wheels 3 move to the working position, the two first limiting parts just come into contact with the corresponding second limiting parts provided on the frame 1, so that the two sets of traveling wheels 3 can accurately move to the working position and be limited in the working position. The first limiting part can be a first plane provided on the inner side of the swing arm 2, and the second limiting part can be a second plane provided on the outer side of the long plate. When the two sets of traveling wheels 3 move to the working position, the inner sides of the two swing arms 2 are respectively attached to the outer side of the corresponding long plate, and the first plane and the second plane are attached to each other to play a limiting role, so that the traveling wheels 3 will not continue to swing after swinging to the working position.

[0061] In this embodiment, as Figure 1 and Figure 2 As shown, the walking device also includes an auxiliary rod 7, which is mounted parallel to the actuating rod 4 on the frame 1 and located below the actuating rod 4. The auxiliary rod 7 works in conjunction with the actuating rod 4. When the actuating rod 4 needs to be operated, the web of the hand can be placed on the auxiliary rod 7, and the four fingers of the hand (excluding the thumb) can be hooked onto the actuating rod 4. Then, force can be applied to pull the actuating rod 4 downward. After releasing the hand, the actuating rod 4 can move upward and reset under the action of the self-resetting component.

[0062] In this embodiment, as Figure 1As shown, the traveling device also includes positioning wheels 8 mounted on the frame 1. The positioning wheels 8 are rotatable. During operation, the positioning wheels 8 act within the grooves at the bottom of the busbar, while the traveling wheels 3 act on the shoulders on both sides of the busbar. The positioning wheels 8 and traveling wheels 3 work together to allow the frame 1 to slide and clamp onto the busbar. Each traveling device has two corresponding positioning wheels 8, symmetrically arranged and acting within two grooves at the bottom of the busbar.

[0063] In this embodiment, as Figure 1 As shown, the traveling device consists of multiple sets arranged on the frame 1 along the travel direction of the rigid contact line surface treatment system. Preferably, there are two sets of traveling devices, symmetrically arranged at both ends of the frame 1.

[0064] The technical effect of this embodiment is:

[0065] 1. In this embodiment, a swing arm 2 and a lever 4 are designed. By manipulating the lever 4, the two swing arms 2 can be moved, and the two sets of walking wheels 3 can be moved between the working position and the open position to facilitate the assembly or disassembly of the rigid contact line surface treatment system and the busbar.

[0066] 2. In this embodiment, a self-resetting component is designed. When the lever 4 is moved by an external force and the external force disappears, the lever 4 can automatically reset under the drive of the self-resetting component, and the two sets of traveling wheels 3 can automatically reset to the working position.

[0067] 3. In this embodiment, a limiting part (i.e., a first limiting part and a second limiting part) is provided between the swing arm 2 and the frame 1, which enables the two sets of traveling wheels 3 to swing and position accurately and quickly to the working position.

[0068] Example 2

[0069] This embodiment is a further improvement on Embodiment 1. The difference between this embodiment and Embodiment 1 is that after the two sets of walking wheels 3 move to the working position, the position of the two sets of walking wheels 3 is locked by a locking component.

[0070] In this embodiment, the walking device further includes a locking component, which is configured to lock the two sets of walking wheels 3 in the working position after the two sets of walking wheels 3 have moved to the working position.

[0071] Preferably, the locking assembly includes a knob plunger 9 and a plunger hole. The knob plunger 9 can be a self-locking knob plunger 9. The knob plunger 9 is mounted on the frame 1, and the plunger hole is formed on the swing arm 2. There are two sets of locking assemblies, and the two sets of locking assemblies are arranged one-to-one with the two swing arms 2. When the two sets of traveling wheels 3 move to the working position, the front end of the knob plunger 9 extends into the plunger hole to lock the swing arm 2 and the frame 1 together, thereby locking the two sets of traveling wheels 3 in the working position. The locking assembly is not limited to the above-described structural form, and can also be other structural forms that can lock the two sets of traveling wheels 3 after they move to the working position.

[0072] The technical effect of this embodiment is:

[0073] This embodiment is designed with a locking component, which can lock the positions of the two sets of walking wheels 3 after they have moved to the working position. This can improve the stability of the structure and ensure that the walking wheels 3 will not slip off the busbar during operation, thus improving safety.

[0074] The foregoing has shown and described the basic principles, main features, and advantages of this application. It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or basic characteristics of this application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0075] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A traveling device suitable for a rigid contact wire surface treatment system, the traveling device being mounted on the frame of the rigid contact wire surface treatment system, characterized in that, The walking device includes a swing arm, walking wheels, a lever, and a self-resetting component; There are two swing arms, which are arranged opposite each other on both sides of the travel direction of the rigid contact line surface treatment system, and the two swing arms are hinged to the frame. The walking wheels are in two sets, and the two sets of walking wheels are mounted opposite each other at the first ends of the two swing arms; The lever is configured such that by manipulating the lever, the second ends of the two swing arms move inward toward each other, and simultaneously the two sets of walking wheels mounted on the first ends of the two swing arms move outward toward opposite sides until the open position is reached. The self-resetting component is configured such that when the lever is moved by an external force and the external force disappears, under the drive of the self-resetting component, the lever resets and the two sets of traveling wheels installed at the first ends of the two swing arms move toward each other towards the inward side until the working position is reached, and at the same time, the second ends of the two swing arms move toward each other towards the outward side. The two sets of wheels can move between the working position and the open position under the control of the lever and the self-resetting assembly, so as to realize the assembly or disassembly of the rigid contact line surface treatment system and the busbar.

2. The walking device for a rigid contact wire surface treatment system according to claim 1, characterized in that, The outer sides of the second ends of the two swing arms are respectively formed with an inwardly concave arc surface, the concavity depth of the two arc surfaces gradually decreases from top to bottom, and the second ends of the two swing arms are respectively provided with an opening; The actuating lever is horizontally positioned between the two swing arms. Both ends of the actuating lever pass through the two openings and can slide up and down within the openings. Each end of the actuating lever is also provided with a set of pressing parts. Under the drive of the actuating lever, the two sets of pressing parts can move up and down along the corresponding arc surfaces, thereby pressing the second ends of the two swing arms to swing around the hinge between the corresponding swing arms and the frame. This drives the second ends of the two swing arms to move inward toward each other, while simultaneously causing the two sets of traveling wheels installed at the first ends of the two swing arms to move outward toward each other until the open position is reached.

3. The walking device for a rigid contact wire surface treatment system according to claim 2, characterized in that, The pressing part is a roller, which is rotatably mounted on the end of the actuating lever.

4. The walking device for a rigid contact wire surface treatment system according to claim 2, characterized in that, The self-resetting component includes a first elastic element and a second elastic element; The first elastic element is disposed between the actuating rod and the frame. Under the elastic force of the first elastic element, the two ends of the actuating rod press against the uppermost part of the corresponding opening and / or the actuating rod drives the two sets of the pressing parts to be in the deepest recess of the corresponding arc surface, so that the second ends of the two swing arms can move outwards to the outermost position, and cause the two sets of walking wheels installed at the first ends of the two swing arms to move inwards to the working position. The second elastic element is disposed between the first end of the two swing arms and the frame. Under the elastic force of the second elastic element, the two sets of walking wheels installed at the first end of the two swing arms can move inward toward each other to the working position.

5. The walking device for a rigid contact wire surface treatment system according to claim 4, characterized in that, Each of the two swing arms is provided with a first limiting part. When the two sets of walking wheels move to the working position, the two first limiting parts just contact the corresponding second limiting parts provided on the frame, so that the two sets of walking wheels can accurately move to the working position and be limited in the working position.

6. The walking device for a rigid contact wire surface treatment system according to claim 1, characterized in that, It also includes a locking component, which is configured to lock the two sets of wheels in the working position after the two sets of wheels have moved to the working position.

7. The walking device for a rigid contact wire surface treatment system according to claim 6, characterized in that, The locking assembly includes a knob plunger and a plunger hole. The knob plunger is disposed on the frame, and the plunger hole is formed on the swing arm. There are two sets of locking assemblies, and the two sets of locking assemblies are respectively arranged in a one-to-one correspondence with the two swing arms. When the two sets of traveling wheels move to the working position, the front end of the knob plunger extends into the plunger hole to lock the swing arm and the frame together, thereby locking the two sets of traveling wheels in the working position.

8. The walking device for a rigid contact wire surface treatment system according to claim 1, characterized in that, It also includes an auxiliary rod, which is arranged on the frame parallel to the actuating rod and located below the actuating rod.

9. The walking device for a rigid contact wire surface treatment system according to claim 1, characterized in that, It also includes positioning wheels mounted on the frame. During operation, the positioning wheels act within the grooves at the bottom of the busbar, and the traveling wheels act on the shoulders on both sides of the busbar. The positioning wheels and the traveling wheels work together to allow the frame to slide and clamp onto the busbar.

10. The walking device for a rigid contact wire surface treatment system according to claim 1, characterized in that, The walking device is in multiple sets, and these multiple sets of walking devices are arranged on the frame along the travel direction of the rigid contact line surface treatment system.

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