Rail transit pantograph-catenary dynamic simulation cold sliding device

Abstract

The utility model provides a rail transit pantograph-catenary dynamic simulation cold sliding device which comprises a supporting frame, walking wheels, a driving motor, a supporting table and an elastic adjusting mechanism. The walking wheels are arranged at the bottom of the supporting frame. The driving motor is arranged in the supporting frame and drives the walking wheels to roll. The supporting table bears the carbon contact strip. The elastic adjusting mechanism is arranged between the supporting table and the supporting frame, the distance between the supporting table and the supporting frame is adjusted, and then the contact pressure between the carbon sliding plate and the rigid contact line is adjusted. The driving motor drives the walking wheels to roll, and then the carbon sliding plate is driven to move along the rigid contact line. According to the utility model, the contact pressure between the carbon slide plate and the contact line can be freely adjusted according to actual needs, data support is provided for officially applying the reinforcing structure to the rigid contact line, various risks of the reinforcing structure in a real line installation and test process are reduced as much as possible, and the safety and reliability of the whole pantograph-catenary system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit detection, in particular to a dynamic simulation cold sliding device for a pantograph-catenary system of rail transit. Background Art

[0002] In the subway operation system, the electric multiple unit obtains power from the catenary and pantograph system (hereinafter referred to as the pantograph-catenary system). And a stable power supply is one of the necessary conditions to ensure the operation of the electric multiple unit. Therefore, the pantograph-catenary system needs to have extremely high stability and efficient current collection performance.

[0003] During the operation of the electric multiple unit, current is collected through the sliding contact between the carbon slide plate of the pantograph and the contact wire. To ensure good current collection of the pantograph, it is necessary to ensure reliable contact between the carbon slide plate of the pantograph and the contact wire. This requires a certain contact pressure to be maintained between the pantograph and the catenary. When they interact with each other, corrosion and wear are likely to occur on the surface. The main reasons are electrical corrosion between the contact wire and the carbon slide plate, mechanical wear of the carbon slide plate, chemical corrosion, oxidation of the contact wire, and so on.

[0004] To ensure the good working state of the catenary equipment, the rigid contact wire with severe wear is usually repaired by replacing the new wire, which causes great losses of manpower and material resources. Therefore, the research on the contact wire reinforcement structure that does not require replacing the whole wire has emerged as the times require. Before the formal operation of this reinforcement structure, the overall performance such as smoothness after installation is mostly tested by a simulation trolley. However, most of the existing simulation trolleys cannot freely adjust the contact pressure between the carbon slide plate and the contact wire according to actual needs, making it difficult to reflect the real contact situation between the rigid contact wire and the carbon slide plate, with poor simulation effect and low test accuracy. Content of the Utility Model

[0005] To solve the above problems, the utility model proposes a dynamic simulation cold sliding device for a rail transit pantograph-catenary system, which can freely adjust the contact pressure between the carbon slide plate and the contact wire according to actual needs, with better simulation effect.

[0006] The utility model proposes a dynamic simulation cold sliding device for a rail transit pantograph-catenary system, including:

[0007] A support frame;

[0008] Traveling wheels, arranged at the bottom of the support frame;

[0009] A driving motor, arranged inside the support frame to drive the traveling wheels to roll;

[0010] A support table, bearing the carbon slide plate;

[0011] An elastic adjusting mechanism, arranged between the support table and the support frame to adjust the distance between the support table and the support frame, and further adjust the contact pressure between the carbon slide plate and the rigid contact wire;

[0012] Among them, the driving motor drives the traveling wheels to roll, thereby driving the carbon sliding plate to move along the rigid contact line.

[0013] In one embodiment, the rail transit pantograph-catenary dynamic simulation cold sliding device further includes an inverted U-shaped plate with an opening facing downwards, covering the upper part of the support frame;

[0014] The support platform is a U-shaped plate with an opening facing upwards, and the carbon sliding plate is carried on the support platform;

[0015] The support platform and the end parts of the inverted U-shaped plate are respectively slidably connected through guide columns.

[0016] In one embodiment, the elastic adjustment mechanism includes a T-shaped support arranged on the bottom surface of the inverted U-shaped plate, a columnar adjustment rod threadedly connected to the support frame, an adjustment nut threadedly connected to the columnar adjustment rod, and a spring clamped between the transverse part of the adjustment nut and the T-shaped support. The T-shaped support and the columnar adjustment rod are arranged on the same central axis;

[0017] The elastic adjustment mechanism adjusts the compression amount of the spring by changing the position of the adjustment nut on the columnar adjustment rod, and further adjusts the contact pressure between the carbon sliding plate and the rigid contact line.

[0018] In one embodiment, the rail transit pantograph-catenary dynamic simulation cold sliding device further includes a pressure sensor arranged between the support platform and the inverted U-shaped plate;

[0019] The non-detection end of the pressure sensor is connected to the transverse part of the T-shaped support, and the detection end of the pressure sensor contacts the bottom of the support platform to monitor the contact pressure between the carbon sliding plate and the rigid contact line.

[0020] In one embodiment, the rail transit pantograph-catenary dynamic simulation cold sliding device further includes a motion sensor to monitor and collect the motion speed and / or acceleration of the rail transit pantograph-catenary dynamic simulation cold sliding device.

[0021] In one embodiment, there are two motion sensors, which work independently.

[0022] In one embodiment, there are four traveling wheels, which are respectively arranged at the four corners of the support frame.

[0023] In one embodiment, there are four driving motors, and each driving motor drives one traveling wheel respectively.

[0024] In one embodiment, the traveling wheels are gears.

[0025] In one embodiment, the carbon sliding plate is 50 cm long.

[0026] Compared with the prior art, the beneficial effects of the rail transit pantograph-catenary dynamic simulation cold sliding device of the present utility model are as follows:

[0027] 1) The analog cold sliding device of the present utility model can replace the train to conduct analog tests on the reinforcement structure of the rigid catenary, automatically collect the operation data during the test process, provide data support for the formal application of the reinforcement structure to the rigid catenary, reduce various risks during the installation and test of the reinforcement structure on the actual line as much as possible, and improve the safety and reliability of the entire pantograph-catenary system.

[0028] 2) The analog cold sliding device of the present utility model ingeniously designs an elastic adjustment mechanism. By means of the sliding cooperation between the support platform loaded with the carbon sliding plate and the inverted U-shaped plate, the reverse elastic force generated by the compression spring acts on the carbon sliding plate through the support platform, thereby changing the contact pressure between the carbon sliding plate and the rigid catenary. It can simulate the contact pressure between the rigid catenary and the carbon sliding plate under different rigid suspension installation forms, so as to meet the test requirements of different rigid suspension installation forms, and thus can more comprehensively test the cooperation between the rigid catenary with the added reinforcement structure and the carbon sliding plate, expanding the application scope.

[0029] 3) By adding a deceleration trigger switch, the analog cold sliding device of the present utility model enables the entire device to start decelerating immediately after passing through the reinforcement structure, improving the test efficiency and having strong practicability. Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of the rail transit pantograph-catenary dynamic analog cold sliding device according to an embodiment of the present utility model;

[0031] Figure 2 is a schematic diagram of the cooperation between the rail transit pantograph-catenary dynamic analog cold sliding device according to an embodiment of the present utility model and the running track during testing;

[0032] Figure 3 is a schematic internal structure diagram of the inverted U-shaped plate in the rail transit pantograph-catenary dynamic analog cold sliding device according to an embodiment of the present utility model;

[0033] Figure 4 is an exploded schematic diagram of the elastic adjustment mechanism in the rail transit pantograph-catenary dynamic analog cold sliding device according to an embodiment of the present utility model.

[0034] Reference Signs

[0035] 1. Support frame, 2. Carbon sliding plate, 3. Motion sensor, 4. Running wheel, 5. Rigid catenary, 6. Support platform, 7. Inverted U-shaped plate, 8. Guide post, 9. Elastic adjustment mechanism, 10. Reinforcement structure, 11. Hall sensor, 901. T-shaped support, 902. Columnar adjustment rod, 903. Spring. Detailed Embodiments

[0036] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted here that many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0037] Secondly, the present utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present utility model, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0038] Furthermore, the term "an embodiment" or "embodiment" in the present application refers to specific features, structures or characteristics that may be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate or selectively mutually exclusive with other embodiments.

[0039] The present utility model provides a dynamic simulation cold sliding device for rail transit pantograph-catenary, which can be applied to the installation state detection of a rigid catenary 5 with a reinforcement structure 10 added. The whole is in the structure of a trolley, including a support frame 1, traveling wheels 4, a driving motor, a support platform 6, and an elastic adjustment mechanism 9. See Figure 1 、 2 。

[0040] A carbon sliding plate 2 is arranged on the top of the support frame 1, and the carbon sliding plate 2 is carried by the support platform 6; traveling wheels 4 are arranged at the bottom of the support frame 1, and the carbon sliding plate 2 is arranged on the support frame 1 through the elastic adjustment mechanism 9. The driving motor is arranged inside the support frame 1 and is used to drive the traveling wheels 4 to roll. The elastic adjustment mechanism 9 is arranged between the support platform 6 and the support frame 1 to adjust the distance between the support platform 6 and the support frame 1, and further adjust the contact pressure between the carbon sliding plate 2 and the rigid catenary 5. Among them, the driving motor drives the traveling wheels 4 to roll, and then drives the carbon sliding plate 2 to move along the rigid catenary 5. The reinforcement structure 10 can be designed as an alternative structure erected on the left and right sides of the worn area of the rigid catenary 5, and is designed with a special support for clamping the new rigid catenary, and the carbon sliding plate 2 can slide through the new rigid catenary 5 instead of the worn rigid catenary, so that it is not necessary to replace the entire rigid catenary.

[0041] The following will describe in detail each component in the above-mentioned dynamic simulation cold sliding device for rail transit pantograph-catenary.

[0042] An embodiment of the pantograph-catenary dynamic simulation cold sliding device of the present utility model further includes an inverted U-shaped plate 7 with an opening facing downward, covering the upper part of the support frame 1. The support platform 6 is a U-shaped plate with an opening facing upward, and the carbon sliding plate 2 is carried on the support platform 6. That is to say, two U-shaped plates are arranged in parallel and at intervals on the top of the support frame 1, namely the support platform 6 and the inverted U-shaped plate 7, and their openings face each other. The ends of the support platform 6 and the inverted U-shaped plate 7 are slidably connected together through their respective corresponding guide columns 8, and the centers of the two are connected together through an elastic adjustment mechanism 9.

[0043] An embodiment of the elastic adjustment mechanism 9 of the present utility model includes a T-shaped support 901 arranged on the bottom surface of the inverted U-shaped plate 7, a columnar adjustment rod 902 threadedly connected to the support frame 1, an adjustment nut threadedly connected to the columnar adjustment rod 902, and a spring 903 clamped between the adjustment nut and the horizontal part of the T-shaped support 901. See Figure 3 、 Figure 4 . The T-shaped support 901 and the columnar adjustment rod 902 are arranged opposite to each other and their axial center lines are collinear. One end of the columnar adjustment rod 902 is threadedly connected to the support frame 1, and the other end is arranged towards the vertical part of the T-shaped support 901.

[0044] An embodiment of the pantograph-catenary dynamic simulation cold sliding device of the present utility model further includes a pressure sensor 904 arranged between the support platform 6 and the inverted U-shaped plate 7. The non-detection end of the pressure sensor 904 is connected to the horizontal part of the T-shaped support 901, and the detection end of the pressure sensor 904 is in contact with the bottom of the support platform 6, for monitoring the contact pressure between the carbon sliding plate 2 and the rigid catenary 5.

[0045] In this way, when the adjustment nut is rotated to change its position on the columnar adjustment rod 902, the distance between the columnar adjustment rod 902 and the T-shaped support 901 changes, so that the compression amount of the spring 903 can be changed. Since the support platform 6 and the inverted U-shaped plate 7 are slidably connected through the guide column 8, the compressed spring 903 will push the pressure sensor 904 together with the support platform 6 to move upward, and then make the carbon sliding plate 2 move closer to the rigid catenary 5. However, the distance between the rigid catenary 5 and the whole device such as the inverted U-shaped plate 7 remains fixed, so that the carbon sliding plate 2 and the rigid catenary 5 can be in closer contact to achieve the purpose of changing the contact pressure between the carbon sliding plate 2 and the rigid catenary 5. At the same time, taking the spring 903 as the adjustment medium is very similar to the actual installation situation of the carbon sliding plate 2 on the pantograph, and both have a certain self-adaptability. Even if the reinforcement structure 10 has a little deviation due to its own installation error, etc., the carbon sliding plate 2 can still maintain close contact with the reinforcement structure 10, and the contact pressure changes little.

[0046] The rail transit bow net dynamic simulation cold sliding device of one embodiment of the utility model also includes a motion sensor 3, which is arranged next to the inverted U-shaped plate 7 near the guide column 8, and is used to monitor and collect the operation data of the rail transit bow net dynamic simulation cold sliding device when sliding, such as movement speed, acceleration, etc., especially the movement data of the carbon slide plate 2 passing through the reinforcement structure 10. The motion sensor 3 can be set as an acceleration sensor to detect the acceleration information of the cold sliding device driving the carbon slide plate 2 through the reinforcement structure 10. One is set on each side, and they work independently and back up each other; a speed sensor can also be set to monitor the actual operation speed of the entire device in real time. Of course, the speed information can also be calculated based on the acceleration detection information; it can also be a vibration sensor, which can reflect the operation status of the entire device, etc.

[0047] The length of the carbon slide plate 2 in one embodiment of the utility model is 50 cm, which is a small section of 50 cm in length in the middle area of ​​the carbon slide plate, rather than a complete pantograph carbon slide plate, mainly because the weight of the entire carbon slide plate is too large. In order to ensure the overall acceleration and deceleration performance of the cold sliding device, the deadweight of the device body must be reduced and controlled as much as possible, and a small section of 50 cm in length in the middle area of ​​the carbon slide plate can realize the effective simulation of the pantograph-net contact relationship.

[0048] In one embodiment of the utility model, there are multiple walking wheels 4, which are symmetrically arranged on the left and right sides of the support frame 1. For example, when there are four walking wheels 4, they are respectively arranged at the four corners of the support frame 1. For considerations such as power balance and reducing the performance requirements of a single drive motor, a synchronous drive structure design of multiple drive motors is adopted, such as a DC brushless drive motor driving a single-stage reducer (reduction ratio i=3:1), the output shaft of the single-stage reducer is connected to the coupling, and then the corresponding walking wheel is driven to rotate through the connecting shaft. When there are four walking wheels 4, there are also four corresponding drive motors, which can be placed in pairs inside the support frame 1. In other words, the number of drive motors is the same as that of the walking wheels 4, and each drive motor drives one walking wheel 4 respectively. Each walking wheel 4 is connected to the drive motor through a reducer, and the drive motor is used to drive the corresponding walking wheel 4 to rotate, so as to drive the entire device to walk along the walking track during the test, and the walking track is consistent with the direction of the rigid contact line 5.

[0049] Taking into account that the device needs to run at a certain speed, the acceleration section should not be too long. The walking wheel 4 of the present application can be implemented with a gear transmission structure to prevent slipping in the driving and braking stages, thereby maximizing the driving and braking performance of the motor. Therefore, the walking wheel 4 of the present invention can adopt a gear structure, and the corresponding walking track can adopt a rack structure. The rack is arranged on the outside of the walking track and meshes with the gear to drive the entire device to move. The inner side of the walking track is connected to the guide wheel by rolling contact to provide auxiliary guiding effect for the movement of the entire device, thereby ensuring that it can move smoothly along the walking track.

[0050] In addition to the traveling wheels 4, multiple sets of guiding wheels, such as two sets, can be arranged on both sides of the support frame 1. The guiding wheels can be arranged inside the traveling wheels 4. During testing, each set of guiding wheels is in rolling contact with the traveling track to assist in guiding the movement of the entire device.

[0051] Furthermore, in order to accurately trigger the deceleration of the traveling wheels, a deceleration start switch can be additionally provided on the support frame 1, which is mainly implemented by the Hall sensor 11. The detection part of the Hall sensor 11 is arranged on the support frame 1, and its magnet part is arranged near the reinforcement structure 10. It can be at the very front end of the deceleration section, or at the very end of the acceleration section and behind the reinforcement structure 10. Once the traveling wheels drive the carbon sliding plate to pass through the reinforcement structure, when the detection part of the Hall sensor 11 passes through the position where the magnet part is located, a deceleration start signal will be generated, and through the processor, it will feedback to control the drive motor of the traveling wheels to start decelerating.

[0052] Two Hall sensors 11 can be arranged, respectively on both sides of the support frame 1, serving as backups for each other. As long as any one or both of them come into effect simultaneously, the entire device can start to automatically decelerate and ensure that the speed is reduced to zero within a safe distance.

[0053] Considering different rigid suspension installation forms in the pantograph-catenary system, there will be different contact pressure requirements between the carbon sliding plate 2 and the rigid contact wire 5. The pantograph-catenary dynamic simulation cold sliding device of the present utility model can achieve arbitrary adjustment of the pantograph-catenary contact pressure between 100 ± 10 N and 150 ± 10 N through a special structural design, so as to meet the requirements of different test conditions.

[0054] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. Such expressions are only for making the description of the present utility model simpler and more convenient, rather than indicating or implying that the indicated components must have a specific orientation or be constructed and operated in a specific orientation.

[0055] In addition, in this application, unless otherwise clearly specified and defined, similar terms such as "connection" and "arrangement" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two components. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific situations.

[0056] The construction and arrangement of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various elements, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, elements shown as integrally formed may be composed of multiple parts or elements, the positions of the elements may be inverted or otherwise changed, and the nature, number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures that perform the recited function described herein, and not only structurally equivalent but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility model. Therefore, the present utility model is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0057] In addition, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiments may not be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present utility model, or those features that are not relevant to the implementation of the present utility model).

[0058] It should be understood that in the development of any actual implementation, as in any engineering or design project, a large number of specific implementation decisions may be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without excessive experimentation, such development efforts will be a routine task of design, manufacturing and production.

[0059] The present utility model has the following beneficial effects:

[0060] 1) The simulated cold sliding device of the present utility model can be used to simulate the test of the reinforcement structure of the rigid catenary instead of the train, and automatically collect the operation data during the test, providing data support for the formal application of the reinforcement structure to the rigid catenary, and reducing various risks during the installation test of the reinforcement structure on the real line as much as possible, improving the safety and reliability of the entire pantograph-catenary system.

[0061] 2) The analog cold sliding device of the present utility model ingeniously designs an elastic adjustment mechanism. By means of the sliding fit between the support platform for loading the carbon sliding plate and the inverted U-shaped plate, the reverse elastic force generated by the compression spring acts on the carbon sliding plate through the support platform, thereby changing the contact pressure between the carbon sliding plate and the rigid contact wire. It can simulate the contact pressure between the rigid contact wire and the carbon sliding plate under different rigid suspension installation forms, so as to meet the test requirements of different rigid suspension installation forms, and thus can more comprehensively test the cooperation between the rigid contact wire with additional reinforcement structure and the carbon sliding plate, expanding the application scope.

[0062] 3) The analog cold sliding device of the present utility model improves the test efficiency and has strong practicability by adding a deceleration trigger switch, so that the whole device starts to decelerate immediately after passing through the reinforcement structure.

[0063] The above embodiments are only further descriptions of the present utility model, rather than other forms of limitation to the present utility model. The present utility model can also have many other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding modifications and changes according to the present utility model, but these corresponding modifications and changes should all fall within the protection scope of the present utility model.

Claims

1. A rail transit catenary dynamic simulation cold sliding device, characterized in that: include: Support frame; Travel wheels are arranged at the bottom of the supporting frame; A driving motor is arranged in the supporting frame to drive the traveling wheels to roll; A support platform, carrying the carbon slide plate; The elastic adjustment mechanism is arranged between the support platform and the support frame to adjust the distance between the support platform and the support frame, thereby adjusting the contact pressure between the carbon slide plate and the rigid contact line; Among them, the driving motor drives the walking wheel to roll, and then drives the carbon skateboard to move along the rigid contact line.

2. The rail transit catenary dynamic simulation cold sliding device according to claim 1, characterized in that: It also includes an inverted U-shaped plate, with an opening facing downward and a cover disposed above the supporting frame; The support platform is a U-shaped plate with an opening facing upward, and the carbon slide plate is mounted on the support platform; The support platform is slidably connected to the ends of the inverted U-shaped plate through guide columns.

3. The rail transit catenary dynamic simulation cold sliding device according to claim 2 is characterized in that: The elastic adjustment mechanism includes a T-shaped support arranged on the bottom surface of the inverted U-shaped plate, a columnar adjustment rod threadedly connected to the support frame, an adjustment nut threadedly connected to the columnar adjustment rod, and a spring clamped between the adjustment nut and the transverse portion of the T-shaped support, and the T-shaped support and the columnar adjustment rod are arranged on a common central axis; The elastic adjustment mechanism adjusts the compression amount of the spring by changing the position of the adjustment nut on the columnar adjustment rod, thereby adjusting the contact pressure between the carbon slide plate and the rigid contact line.

4. The rail transit catenary dynamic simulation cold sliding device according to claim 3 is characterized in that: Also included is a pressure sensor disposed between the support platform and the inverted U-shaped plate; The non-detection end of the pressure sensor is connected to the horizontal part of the T-shaped support, and the detection end of the pressure sensor is in contact with the bottom of the support platform to monitor the contact pressure between the carbon slide plate and the rigid contact line.

5. The rail transit catenary dynamic simulation cold sliding device according to claim 1, characterized in that: It also includes a motion sensor to monitor and collect the movement speed and / or acceleration of the rail transit bow-net dynamic simulation cold sliding device.

6. The rail transit catenary dynamic simulation cold sliding device according to claim 5, characterized in that: There are two motion sensors, which work independently of each other.

7. The rail transit catenary dynamic simulation cold sliding device according to claim 1, characterized in that: There are four walking wheels, which are respectively arranged at the four corners of the supporting frame.

8. The rail transit catenary dynamic simulation cold sliding device according to claim 7, characterized in that: There are four drive motors, and each drive motor drives a walking wheel respectively.

9. The rail transit catenary dynamic simulation cold sliding device according to claim 1, characterized in that: The traveling wheel is a gear.

10. The rail transit catenary dynamic simulation cold sliding device according to claim 1, characterized in that: The carbon skateboard is 50cm long.

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