OCS simulation device and OCS detection device test system

Abstract

The application provides a contact network simulation device and a contact network detection device test system. The contact network simulation device is arranged on a track device, and the track device comprises two rails. The contact network simulation device comprises: a first column assembly and a second column assembly arranged on the sides of the two rails away from each other; a contact wire, which comprises a first contact wire and a second contact wire, the first contact wire provides a detection environment of a first group of parameters, the second contact wire provides a detection environment of a second group of parameters and a third group of parameters, the first group of parameters comprises a gauge and a catenary value, the second group of parameters comprises a contact pressure and a hard point, and the third group of parameters comprises abrasion, and the first contact wire and the second contact wire are alternatively hung on the first column assembly and the second column assembly; and a tensioning assembly connected with one end of the first contact wire or the second contact wire. According to the contact network simulation device, a detection environment can be provided for the contact network detection device to verify the function and reliability thereof.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a catenary simulation device and a catenary testing system. Background Technology

[0002] Electrified railways refer to railways capable of providing electrical energy for the operation of electric locomotives, mainly composed of electric locomotives and traction power supply systems. Among them, the overhead contact line of the traction power supply system is an overhead device directly related to the current intake of electric locomotives. However, its working environment is complex and harsh, it is erected along the line without backup, and it is the weakest link in the entire traction power supply system. Moreover, the long-standing problems of insufficient maintenance time and lack of reasonable inspection methods have led to increasingly prominent issues in the operation and maintenance of the overhead contact line.

[0003] Currently, there are solutions on the market that use catenary inspection devices installed on dedicated inspection vehicles to inspect the condition of catenary systems, and these are widely used on national railway lines. Since these catenary inspection devices mainly consist of high-precision measuring instruments, the selection of these instruments requires theoretical calculations, and their main functions and performance need to be verified before installation. Therefore, there is a need for a dedicated testing device that simulates the pantograph-catenary relationship on an actual operating route to verify whether the main functions, parameters, and reliability of the catenary inspection device meet the requirements. Summary of the Invention

[0004] In view of the above problems, the present invention provides a test system for a catenary simulation device and a catenary testing device, which can provide a testing environment for the catenary testing device with various parameters such as contact wire height, pull-out value, contact pressure, hard spots and wear, thereby better determining the function and reliability of the catenary testing device.

[0005] This invention provides a catenary simulation device, which is installed on the track device of a catenary testing system. The track device includes two parallel rails. The catenary simulation device includes: a first column assembly and a second column assembly, which are respectively located on opposite sides of the two rails and spaced apart along the length of the rails; a contact wire, which includes a first contact wire and a second contact wire. The first contact wire is used to detect a first set of parameters, and the second contact wire is used to detect a second set of parameters and a third set of parameters. The first set of parameters includes at least one of the contact wire's guide height and the contact wire's pull-out value. The second set of parameters includes at least one of the contact wire's contact pressure and the contact wire's hard point. The third set of parameters includes the contact wire's wear. The first contact wire and the second contact wire are selectively suspended from the first column assembly and the second column assembly to detect corresponding data; and a tensioning assembly, which is connected to one end of either the first contact wire or the second contact wire.

[0006] According to the catenary simulation device of the present invention, by simulating the actual railway line catenary, a testing environment with various parameters such as contact wire height, pull-out value, hard point, contact pressure and wear can be provided for the catenary testing device. This facilitates the verification of whether the main functions, parameters and reliability of the catenary testing device meet the requirements before it is installed on the locomotive. Furthermore, by setting a first contact wire and a second contact wire that are interchangeable with each other, the error of the testing results can be reduced, and the true performance of the catenary testing device can be more accurately reflected.

[0007] Optionally, the first column assembly has a plurality of first suspension points arranged at intervals in the vertical direction, and the second column assembly has a plurality of first pulley units. One end of the contact line is connected to one of the plurality of first suspension points, and the other end is wound around a portion of the first pulley units and connected to the tensioning assembly.

[0008] In some embodiments, each of the first suspension points is associated with a portion of the first pulley unit at a height level, the first contact wire is disposed at any one of the plurality of height levels, and the second contact wire is disposed at one of the plurality of height levels that is adapted to the height of the pantograph simulation component of the contact wire detection device test system.

[0009] Optionally, the first column assembly includes: a first column connected to the track device; a first upper bracket with a portion of the first suspension points; and a first lower bracket located below the first upper bracket, with the remaining portion of the first suspension points. The second column assembly includes: a second column connected to the track device; a second upper bracket with a portion of the first pulley units; and a second lower bracket consisting of multiple brackets of different lengths that are interchangeable, located below the second upper bracket, with the remaining portion of the first pulley units.

[0010] Optionally, the second column assembly further includes a third bracket, which is located on the side of the second column facing away from the track. The third bracket is provided with a second pulley unit, and the other end of the contact line passes through a portion of the first pulley unit and the second pulley unit in sequence before being connected to the tensioning assembly.

[0011] In some embodiments, the tensioning assembly includes: a tray suspended at one end of the contact line away from the first suspension point; and at least one weight disposed on the tray to provide tension to the contact line.

[0012] Optionally, the contact wire simulation device further includes: an abrasion test rod, which is arranged parallel to and in contact with the second contact wire to provide a contact wire abrasion detection environment; and a plurality of fixing clamps, which clamp the abrasion test rod and the second contact wire.

[0013] Optionally, the pulley unit includes: a mounting base defining a rolling channel, the mounting base having a rotating hole communicating with the rolling channel; a rotating shaft passing through the rotating hole; and a pulley rotatably fitted onto the rotating shaft and located within the rolling channel, the pulley surface having a mating groove adapted to the contact line, the contact line mating within the mating groove.

[0014] Optionally, the pulley unit further includes: a bearing disposed between the pulley and the rotating shaft, the rotating shaft having an oil injection hole, one end of the oil injection hole penetrating through the shaft end of the rotating shaft, and the other end extending and communicating with the bearing; and an oil cup disposed at the end of the oil injection hole away from the bearing, for injecting oil into the oil injection hole.

[0015] A second aspect of the present invention provides a test system for a catenary inspection device, comprising: a track device; and a catenary simulation device according to the first aspect of the present invention, wherein the catenary simulation device is disposed on the track device.

[0016] According to the catenary testing system of the present invention, by setting up the catenary simulation device of the first aspect, it is possible to verify whether the main functions, parameters and reliability of the catenary testing device meet the requirements before it is installed on the locomotive, thereby helping to ensure the normal operation of the catenary power supply system and the safe operation of rail transit. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the test system for the contact wire inspection device provided in an embodiment of the present invention;

[0019] Figure 2 This is a partial structural schematic diagram of the test system for the contact wire inspection device provided in an embodiment of the present invention;

[0020] Figure 3 This is a partial structural schematic diagram of the test system for the contact wire inspection device provided in an embodiment of the present invention;

[0021] Figure 4 for Figure 3 A magnified view of part A shown in the center circle;

[0022] Figure 5 This is a schematic diagram of the structure of the wear test bar provided in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the first column assembly of the overhead contact line simulation device provided in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the second column assembly of the overhead contact line simulation device provided in an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the pulley unit provided in an embodiment of the present invention;

[0026] Figure 9 This is a partial structural schematic diagram of the test system for the contact wire inspection device provided in an embodiment of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of the geometric detection bracket provided in an embodiment of the present invention;

[0028] Figure 11This is a schematic diagram of the structure of the second detection unit provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100-Contact Wire Inspection Device Test System;

[0031] 10-Overhead contact network simulation device;

[0032] 11-First column assembly; 111-First column; 112-First upper bracket; 113-First lower bracket; 114-First suspension point;

[0033] 12-Second column assembly; 121-Second column; 122-Second upper bracket; 123-Second lower bracket; 124-First pulley unit; 1241-Mounting base; 1242-Shaft; 1243-Pulley; 1244-Bearing; 1245-Oil cup; 1246-Positioning component; 125-Third bracket; 126-Second pulley unit; 127-Second suspension point;

[0034] 13-Tensioning assembly; 131-Pattern; 132-Weight; 14-Contact wire; 141-First contact wire; 142-Second contact wire; 15-Fixing clamp; 16-Abrasion test bar; 17-Load-bearing cable;

[0035] 20-Railway device;

[0036] 21-Rail track; 22-Base plate; 23-Rail sleeper;

[0037] 30 - Railcar Simulation Device;

[0038] 31-Trolley; 311-First support; 312-Second support; 313-Third support;

[0039] 32-Pantograph Simulation Component;

[0040] 321-Support frame; 3211-Vertical beam; 3212-Horizontal beam; 3213-Fixed pulley;

[0041] 322-Skateboard assembly; 3221-Skateboard body; 3222-Power receiving plate; 3223-Connecting plate; 3224-Connector; 3225-Roller assembly; 3226-Roller; 3227-Connecting shaft; 323-Weight assembly;

[0042] 40 - First detection unit; 41 - Geometric detection mounting bracket; 411 - First moving rail; 412 - First mounting interface; 42 - Geometric detection equipment;

[0043] 50 - Second detection unit; 51 - Pressure detection module; 52 - Hard spot detection module;

[0044] 60 - Third detection unit; 61 - Wear detection mounting bracket; 62 - Wear detection equipment. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] Electrified railways refer to railways capable of providing electrical power for the operation of electric locomotives, mainly composed of electric locomotives and traction power supply systems. The normal operation of the traction power supply system is an important guarantee for the safe operation of rail transit. Only by ensuring the safety and reliability of the overhead contact line power supply system can the rail transit traction power supply system and electric passenger cars operate stably in the long term.

[0047] The overhead contact line is an overhead device directly related to the current draw of electric locomotives. However, its working environment is harsh and the surrounding environment is very complex. It is erected along the line without backup, making it the weakest link in the entire traction power supply system. With the rapid development of urban rail transit, long-standing problems such as insufficient maintenance time and lack of reasonable testing methods have led to increasingly prominent issues in the operation and maintenance of the overhead contact line system.

[0048] In view of this, embodiments of the present invention provide a test system for a contact wire inspection device. By setting up a contact wire simulation device, a first detection unit, a second detection unit, and a third detection unit, it is possible to detect various parameters of the contact wire, such as conductor height, pull-out value, contact pressure, hard spots, and wear, thereby helping to ensure the normal operation of the contact wire power supply system and the safe operation of rail transit.

[0049] The following is for reference. Figures 1-11 A test system 100 for a contact wire inspection device according to an embodiment of the present invention is described.

[0050] Combination Figure 1 , Figure 2 and Figure 3 The catenary testing system 100 of this invention includes: a catenary simulation device 10, a track device 20, a track vehicle simulation device 30, and a catenary testing device.

[0051] Specifically, the track device 20 may include two parallel rails 21 to facilitate the passage of the simulated train track trolley 31. The overhead contact line simulation device 10 may include a first column assembly 11, a second column assembly 12, and a contact wire 14. The first column assembly 11 and the second column assembly 12 are respectively located on opposite sides of the two rails 21, and are spaced apart along the length of the rails 21. The contact wire 14 is erected on the first column assembly 11 and the second column assembly 12, and is located above the rails 21, so that the overhead contact line is arranged in a zigzag pattern, thus simulating the overhead contact line of a real railway line.

[0052] The track vehicle simulation device 30 is movably mounted on the track 21 and connected to the contact wire 14 to receive power from the contact wire 14, thus simulating a real pantograph-catenary system. A contact wire detection device is mounted on the track vehicle simulation device 30 and moves with it on the track. The contact wire detection device can detect a first set of parameters, a second set of parameters, and a third set of parameters for the contact wire 14. The first set of parameters includes at least one of the contact wire 14's conductor height and pull-out value; the second set of parameters includes at least one of the contact pressure and hard spots of the contact wire 14; and the third set of parameters includes the wear of the contact wire 14.

[0053] According to the catenary testing system 100 of the present invention, a first column assembly 11 and a second column assembly 12 are set on both sides of the track 21 of the track device 20. The contact wire 14 is erected on the first column assembly 11 and the second column assembly 12 to simulate the real catenary. The railcar simulation device 30 is movably set on the track 21 and receives power from the contact wire 14 to simulate the real railway pantograph-catenary system. This provides a testing environment for the catenary testing device to measure various parameters of the contact wire 14, such as conductor height, pull-out value, contact pressure, hard points, and wear. This allows the main functions, parameters, and reliability of the catenary testing device to be verified before it is installed on the locomotive, thereby helping to ensure the normal operation of the catenary power supply system and the safe operation of rail transit.

[0054] Optionally, the track vehicle simulation device 30 may include a track trolley 31 and a pantograph simulation assembly 32. The track trolley 31 is movably mounted on the track 21, and the pantograph simulation assembly 32 is mounted on the track trolley 31 and in contact with the contact wire 14. Thus, the pantograph simulation assembly 32 can receive power from the contact wire 14, thereby simulating a real railway pantograph-catenary system. The contact wire detection device may include a first detection unit 40, a second detection unit 50, and a third detection unit 60. The first detection unit 40 and the third detection unit 60 are mounted on the track trolley, and the second detection unit 50 is mounted on the pantograph simulation assembly 32. The first detection unit 40 is configured to detect a first set of parameters of the contact wire 14. This allows for the simulation of detecting the conductor height and pull-out value of the contact wire 14 under actual train operating conditions. The second detection unit 50 makes contact with the contact wire 14 under pressure. The second detection unit 50 is configured to detect a second set of parameters of the contact wire 14, thus simulating the contact pressure and hardening of the contact wire 14 under actual train operating conditions. The third detection unit 60 is configured to detect a third set of parameters of the contact wire 14. This simulates the wear and tear of the contact wire 14 under actual train operating conditions.

[0055] Optionally, refer to Figure 2 and Figure 3 The track device 20 may further include: a base plate 22, which may be formed as a flat plate, with sleepers 23 provided on the base plate 22, two rails 21 that may be laid on the upper side of the sleepers 23, a first column assembly 11 and a second column assembly 12 that may both be provided on the base plate 22, and a track trolley 31 that may be movably provided on the rails 21, thereby providing the contact wire detection device with a wheel running environment consistent with the actual line.

[0056] According to some embodiments of the present invention, reference Figure 1 The contact wire 14 may include a first contact wire 141 and a second contact wire 142. Both the first contact wire 141 and the second contact wire 142 are made of steel wire rope with the same diameter as the actual line contact wire 14. The first contact wire 141 can provide the first detection unit 40 with the detection environment for the first set of parameters of the contact wire 14. The second contact wire 142 can provide the second detection unit 50 with the detection environment for the second set of parameters of the contact wire 14. At the same time, it can also provide the third detection unit 60 with the detection environment for the third set of parameters of the contact wire 14.

[0057] The first contact wire 141 and the second contact wire 142 are interchangeably mounted on the first column assembly 11 and the second column assembly 12. In other words, at any given time, only one of the first contact wire 141 and the second contact wire 142 is mounted on the first column assembly 11 and the second column assembly 12 for relevant testing. For example, when the first contact wire 141 is mounted on the first column assembly 11 and the second column assembly 12 to test the guide height and pull-out value, the second contact wire 142 is removed; and when the second contact wire 142 is mounted on the first column assembly 11 and the second column assembly to test wear, hard points, and contact pressure, the first contact wire 141 is removed.

[0058] This avoids interference between the detection results of the first contact wire 141 and the second contact wire 142, making the simulated detection results for the first contact wire 141 and the second contact wire 142 more realistic and reliable. The first detection unit 40 can detect the first contact wire 141 to obtain a first set of parameters, the second detection unit 50 can detect the second contact wire 142 to obtain a second set of parameters, and the third detection unit 60 can detect the second contact wire 142 to obtain a third set of parameters. In this way, by combining the detection results of the first contact wire 141 and the second contact wire 142 from the contact wire detection device, the actual performance parameters of the contact wire, such as conductor height, pull-out value, hardness, contact pressure, and wear, can be obtained.

[0059] It should be noted that, since in actual pantograph-catenary systems, a single contact wire 14 typically provides power to the train, although this scheme tests the first contact wire 141 and the second contact wire 142 separately, the first set of parameters obtained by testing the first contact wire 141, and the second and third sets of parameters obtained by testing the second contact wire 142, reflect the actual performance parameters of the contact wire 14 in different aspects.

[0060] refer to Figure 1 , Figure 2 and Figure 3 The overhead contact line simulation device 10 may further include a tensioning component 13. The tensioning component 13 tensions the contact wire 14 when it is installed on the first column assembly 11 and the second column assembly 12. For example, the tensioning component 13 may be connected to the end of the first contact wire 141 or the second contact wire 142 furthest from the first column assembly 11. This allows the tensioning component 13 to tension the first contact wire 141 when it is installed on the first column assembly 11 and the second column assembly 12, and also to tension the second contact wire 142 when it is installed on the first column assembly 11 and the second column assembly 12. This allows for better adjustment of the tension force of the first contact wire 141 or the second contact wire 142, and better simulation of the actual working state of the contact wire 14.

[0061] Optionally, combined Figures 11-3 as well as Figure 6 and Figure 7 The first column assembly 11 has multiple first suspension points 114, which are spaced apart in the vertical direction. The second column assembly 12 has multiple first pulley units 124, which may or may not be the same number as the number of first suspension points 114. Each first suspension point 114 can be associated with a portion of the first pulley units 124 at a specific height. When the contact wire 14 (including the aforementioned first contact wire 141 and second contact wire 142) is installed at different height levels, one end of the contact wire 14 is connected to the first suspension point 114 corresponding to that height level, and the other end of the contact wire 14 is wound around a portion of the first pulley units 124. The first contact wire 141 can be installed at any of the multiple height levels, and the second contact wire 142 can be installed at one of the multiple height levels that matches the height of the pantograph simulation assembly.

[0062] Optionally, each first suspension point 114 is at a different height from the multiple first pulley units 124. This results in a certain conductor slope for both the first contact wire 141 and the second contact wire 142 used to simulate the actual contact wire 14. This provides a more realistic testing environment for the contact wire detection device to measure conductor height, pull-out value, and wear of the contact wire 14.

[0063] Optionally, refer to Figure 6 The first column assembly 11 may include a first column 111, a first upper bracket 112, and a first lower bracket 113. The bottom end of the first column 111 can be connected to the track device 20; for example, the first column 111 can be welded to the base plate 22 of the track device 20. Both the first upper bracket 112 and the first lower bracket 113 are located on the side of the first column 111 facing the track 21. The first upper bracket 112 has some first suspension points 114, and the first lower bracket 113 is located below the first upper bracket 112, with the remaining first suspension points 114. This allows for faster determination of the suspension positions of the first contact wire 141 and the second contact wire 142 during testing, facilitating smooth testing.

[0064] Optionally, the first suspension point 114 can be formed as a hook, which can be an arc segment or a ring. This makes the structure simple, easy to connect and cooperate with the contact line 14, and also easy to manufacture.

[0065] Optionally, both the first upper bracket 112 and the first lower bracket 113 can be welded to the first column 111, so that the first column assembly 11 has high structural strength and is not easily deformed.

[0066] Accordingly, refer to Figure 7 The second column assembly 12 may include a second column 121, a second upper bracket 122, and a second lower bracket 123. The bottom end of the second column 121 can be connected to the track device 20; for example, the second column 121 can be welded to the base plate 22 of the track device 20. Both the second upper bracket 122 and the second lower bracket 123 are located on the side of the second column 121 facing the track 21. The second upper bracket 122 is provided with a portion of the first pulley unit 124. There are multiple second lower brackets 123, each with different lengths and interchangeable with each other. That is, depending on the required height setting of the contact line 14, a second lower bracket 123 of corresponding length can be provided on the second column 121. The second lower bracket 123 is located below the second upper bracket 122 and is provided with a second set of pulley units.

[0067] Optionally, since the second upper bracket 122 does not need to be replaced, while the second lower bracket 123 needs to be replaced according to different height settings, the second upper bracket 122 can be welded to the second column 121 to ensure the connection strength between the second upper bracket 122 and the second column 121. The second lower bracket 123 can be detachably connected to the second column 121, such as by bolt connection or plug-in connection, to ensure that the second lower bracket 123 and the second column 121 are easy to disassemble and assemble.

[0068] Optionally, refer to Figure 3 and Figure 7 The second column assembly 12 may further include a third bracket 125. Specifically, the third bracket 125 is located on the side of the second column 121 facing away from the rail 21. The third bracket 125 is equipped with a second pulley unit 126, and one end of the contact wire 14 adjacent to the tensioning assembly 13 is wrapped and supported by the second pulley unit 126. That is to say, after the first contact wire 141 passes through part of the first pulley unit 124, the end of the first contact wire 141 away from the first column assembly 11 needs to pass through the second pulley unit 126 to connect with the tensioning assembly 13. After the second contact wire 142 passes through the first pulley unit 124, the end of the second contact wire 142 away from the first column assembly 11 needs to pass through the second pulley unit 126 to connect with the tensioning assembly 13. By setting the second pulley unit 126, the tensioning component 13 can be adjusted from the side of the second column 121 facing the rail 21 to the side of the second column 121 facing away from the rail 21. This makes it convenient to operate the tensioning component 13 to apply tension to the contact line 14, and also avoids the tensioning component 13 interfering with the movement of the track trolley 31.

[0069] For example, the first column assembly 11 has five suspension points from top to bottom: first suspension point 114a1, first suspension point 114a2, first suspension point 114a3, first suspension point 114a4, and first suspension point 114a5.

[0070] The second column assembly 12 includes five first pulley units 124: first pulley unit 124b1, first pulley unit 124b2, first pulley unit 124b3, first pulley unit 124b4, and first pulley unit 124b5, and one second pulley unit 126c. The first pulley units 124b1, 124b2, 124b3, and 124b4 are arranged sequentially from top to bottom. The first pulley units 124b5 and 124b3 are at the same height and arranged horizontally. The first pulley unit 124b4 is located below the first pulley units 124b5 and 124b3.

[0071] The suspension method of contact wire 14 at different height settings is as follows:

[0072] First height setting: First suspension point 114a1 → First pulley unit 124b1 → First pulley unit 124b2 → First pulley unit 124b3 → First pulley unit 124b5 → Second pulley unit 126c;

[0073] Second height setting: First suspension point 114a2 → First pulley unit 124b2 → First pulley unit 124b3 → First pulley unit 124b5 → Second pulley unit 126c;

[0074] Third height setting: First suspension point 114a3 → First pulley unit 124b4 → First pulley unit 124b3 → First pulley unit 124b5 → Second pulley unit 126c;

[0075] Fourth height setting: First suspension point 114a4 → First pulley unit 124b4 → First pulley unit 124b3 → First pulley unit 124b5 → Second pulley unit 126c. In this height setting, the first pulley unit 124b4 can be set on the shorter second lower bracket 123.

[0076] Fifth height setting: First suspension point 114a5 → First pulley unit 124b4 → First pulley unit 124b3 → First pulley unit 124b5 → Second pulley unit 126c; In this height setting, the first pulley unit 124b4 can be set on the longer second lower bracket 123.

[0077] In some embodiments, reference Figure 3The tensioning assembly 13 may include a tray 131 and weights 132. The tray 131 is suspended at the end of the contact wire 14 away from the first column assembly 11. The weights 132 may be at least one, for example, one or more. Depending on the required tension of the contact wire 14, a corresponding number and weight of weights 132 can be placed on the tray 131 to provide different tension environments to the contact wire 14, thereby simulating the actual tension of the contact wire 14.

[0078] Optionally, refer to Figure 2 , Figure 3 and Figure 7 The top of the second column 121 is provided with a second suspension point 127. The contact line simulation device 10 may include a support cable 17. One end of the support cable 17 is connected to the first suspension point 114 at the top of the first column 111, and the other end of the support cable 17 is connected to the second suspension point 127 at the top of the second column 121. The support cable 17 may be located on the upper side of the contact line 14. The support cable 17 is used to provide suspension support for the contact line 14.

[0079] Optionally, refer to Figure 4 and Figure 5 The contact wire simulation device 10 may further include a fixing clamp 15 and an abrasion test rod 16. Specifically, the abrasion test rod 16 may be a round rod, parallel to and in contact with the second contact wire 142. The fixing clamp 15 can hold the second contact wire 142 and the abrasion test rod 16, and the abrasion of the abrasion test rod 16 can represent the abrasion of the contact wire 14. In this way, the abrasion test rod 16 can provide an environment for detecting the abrasion of the contact wire 14.

[0080] Optionally, refer to Figure 8 The pulley unit may include a mounting base 1241, a rotating shaft 1242, and a pulley 1243. The mounting base 1241 may be formed as a downward-opening groove, for example, in an inverted U-shape. The mounting base 1241 defines a rolling channel, and its sidewalls have rotating holes communicating with the rolling channel. The rotating shaft 1242 passes through the rotating hole, and its two ends are respectively supported on the two sidewalls of the mounting base 1241. The pulley 1243 is rotatably fitted onto the rotating shaft 1242 and located within the rolling channel. The surface of the pulley 1243 has a mating groove adapted to the contact line 14. The contact line 14 fits into the mating groove. For example, the mating groove is formed by a radially downward recess on the surface of the pulley 1243, and the side of the contact line 14 fits into the mating groove. This prevents the contact line 14 from disengaging from the pulley 1243.

[0081] Optionally, refer to Figure 8The rotating shaft 1242 is provided with a socket on the outer side of the rolling channel. The pulley unit also includes a positioning member 1246, which can be inserted into the socket. For example, the positioning member 1246 can be a post or a plate, thereby positioning the rotating shaft 1242 in the axial direction and preventing the rotating shaft 1242 from moving.

[0082] Optionally, refer to Figure 8 The pulley unit may further include a bearing 1244 and an oil cup 1245. The bearing 1244 is located between the pulley 1243 and the shaft 1242; that is, the inner ring of the bearing 1244 mates with the shaft 1242, and the outer ring of the bearing 1244 mates with the pulley 1243. An oil filling hole is formed inside the shaft 1242, with one end penetrating the shaft end and the other end connecting to the bearing 1244. The oil cup 1245 is located at the end of the oil filling hole furthest from the bearing 1244 to allow oil to be injected into the hole. This allows lubricating oil to flow from the oil filling hole to the space between the inner ring of the bearing 1244 and the shaft 1242, preventing damage to the shaft 1242 or the bearing 1244 and ensuring smooth rotation of the pulley 1243.

[0083] In some embodiments, reference Figure 9 and Figure 10 The first detection unit 40 may include a geometric detection mounting bracket 41 and geometric detection devices 42. Specifically, the geometric detection mounting bracket 41 may be welded from square tubing, and there may be multiple geometric detection devices 42, which are movably mounted on the geometric detection mounting bracket 41. For example, the geometric detection devices 42 may be high-precision devices such as cameras or lasers used to detect the guide height and pull-out value of the contact wire 14. In this way, the first detection unit 40 can be adapted to the verification of different geometric detection systems 100.

[0084] Optionally, the geometric detection mounting bracket 41 can extend along the length of the track 21. The geometric detection mounting bracket 41 is provided with a first moving rail 411 and a plurality of first mounting interfaces 412. The first moving rail 411 can extend along the length of the track 21. For example, the first moving rail 411 is formed as an elongated hole. The plurality of first mounting interfaces 412 can be arranged at intervals along the length of the track 21. Some of the plurality of geometric detection devices 42 are movably fitted to the first moving rail 411, and the remaining parts are provided at the corresponding mounting interfaces.

[0085] For example Figure 10As shown, the first moving rail 411 can be formed as an elongated hole. There can be two parallel and spaced-apart first moving rails 411. The geometric detection device 42 can be provided with a sliding block adapted to the elongated hole. The sliding block is movably engaged with the first moving rail 411 to facilitate the movement of the geometric detection device 42 relative to the geometric detection mounting bracket 41. Providing multiple first mounting interfaces 412 facilitates the installation of corresponding geometric detection devices 42, such as cameras or lasers, as needed during the testing process. Thus, the mating structure between the geometric detection device 42 and the geometric detection mounting bracket 41 is relatively simple, facilitating manufacturing and assembly.

[0086] In some embodiments, reference Figure 11 The pantograph simulation assembly 32 may include: a support frame 321, a sliding plate assembly 322, and a weight assembly 323. Two support frames 321 are arranged opposite each other along the width of the track 21. Each support frame 321 has a fixed pulley 3213 at its top. The sliding plate assembly 322 is vertically movable between the two support frames 321, and it makes contact with the second contact line 142, which is located above the sliding plate assembly 322. The weight assembly 323 and the sliding plate assembly 322 are connected to both sides of the fixed pulley 3213 via connecting ropes. Thus, the weight assembly 323 provides a constant pantograph-catenary contact pressure environment for the sliding plate assembly 322, ensuring stable contact between the sliding plate assembly 322 and the second contact line 142. The second detection unit 50 may include: a pressure detection module 51 and a hard spot detection module 52. The pressure detection module 51 is disposed on the slide plate assembly 322 to detect the contact pressure between the slide plate assembly 322 and the second contact line 142. The hard point detection module 52 is disposed on the slide plate assembly 322 to detect hard points on the second contact line 142.

[0087] Optionally, refer to Figure 11 The support frame 321 may include 3212 and two vertical beams 3211. The vertical beams 3211 and 3212 may be angle steel. The two vertical beams 3211 are arranged at intervals along the length of the track 21. The two ends of 3212 are respectively connected to the top of the two vertical beams 3211. The fixed pulley 3213 may be located in the middle of 3212. The slide assembly 322 and the weight assembly 323 are respectively connected to the two sides of the fixed pulley 3213 by connecting ropes. Thus, the structure is simple and easy to manufacture and assemble.

[0088] Optionally, refer to Figure 11 Each support frame 321 includes two guide rails, both extending vertically and spaced apart along the length of the track 21. For example, the two guide rails can be respectively mounted on two vertical beams 3211, and the guide rails can be integrally formed with the vertical beams 3211, thus providing high structural strength. Alternatively, the guide rails and vertical beams 3211 can be detachably connected, facilitating assembly and disassembly.

[0089] The skateboard assembly 322 may include: a skateboard body 3221, a roller assembly 3225, and a connector 3224. The skateboard body 3221 is in abutting contact with the second contact line 142. For example, the skateboard body 3221 may be positioned perpendicular to the second contact line 142, with the second contact line 142 located above the skateboard body 3221, and the skateboard body 3221 exerting upward pressure on the second contact line 142. The roller device 3225 may include a connecting shaft 3227 and multiple rollers 3226. The multiple rollers 3226 are located at both ends of the connecting shaft 3227. The rollers 3226 are rotatably fitted with corresponding guide rails. The connecting shaft 3227 is connected to the weight assembly 323 through a connecting rope. The connector 3224 connects the skateboard body 3221 and the connecting shaft 3227. In this way, the weight assembly 323 can transmit the pulling force to the skateboard body 3221 in sequence through the rolling device and the connector 3224, thereby changing the contact pressure of the skateboard body 3221 and the second contact line 142, thus providing a real contact pressure detection environment.

[0090] For example Figure 11 As shown, the skateboard body 3221 may include two receiving plates 3222 and two connecting plates 3223. The two receiving plates 3222 extend perpendicularly to the second contact line 142 and are arranged parallel to and spaced apart from each other in a direction parallel to the second contact line 142. The two connecting plates 3223 are located at both ends of the receiving plates 3222 along their length and on the underside of the receiving plates 3222. Connecting members 3224 pass through the two connecting plates 3223 in a direction parallel to the receiving plates 3222, so that both ends of the connecting members 3224 are connected to the connecting shafts 3227 of the two roller devices 3225, respectively. Thus, the skateboard body 3221 can simulate the form of a real pantograph skateboard. The underside of the receiving plate 3222 is provided with mounting interfaces for installing the pressure detection module 51 and the hard point detection module 52, which are respectively located at their respective mounting interfaces. Each roller path device includes four rollers 3226 and a connecting shaft 3227. The two ends of the connecting shaft 3227 are each provided with two rollers 3226 to prevent the connecting shaft 3227 from tilting.

[0091] When the track trolley 31 is pushed along the track device 20, the second contact line 142 presses down on the slide plate assembly 322. Its contact pressure is constant, which is the weight of the weight assemblies 323 on both sides minus the weight of the slide plate assembly 322. This effectively provides a constant pantograph-catenary contact pressure environment.

[0092] In summary, when adjusting the contact pressure of the skateboard body 3221 and the second contact line 142 by adjusting the weight of the weight assembly 323, the weight assembly 323 can transfer the pulling force to the skateboard body 3221 in sequence through the rolling device and the connector 3224. Due to the rolling cooperation between the roller device 3225 and the support frame 321, the vertical movement of the skateboard body 3221 is smoother, which can improve the response efficiency.

[0093] Optionally, refer to Figure 9 The third detection unit 60 may include: a wear detection mounting bracket 61 and a wear detection device 62. The wear detection mounting bracket 61 is movably mounted on the track 21, and the wear detection device 62 is movably mounted on the wear detection mounting bracket 61. For example, a third bracket 313 may also be provided on the track trolley 31. The wear detection mounting bracket 61 is mounted on the third bracket 313, and the wear detection device 62 is mounted on the wear detection mounting bracket 61. The wear detection device 62 is used to detect the wear degree of the wear test bar 16.

[0094] Optionally, the wear detection mounting bracket 61 is provided with a second moving rail and multiple second mounting interfaces. The first moving rail 411 can extend along the length direction of the track 21, and the multiple second mounting interfaces can be arranged at intervals along the length direction of the track 21. Some of the multiple wear detection devices 62 are movably fitted to the first moving rail 411, and the rest are located at the corresponding second mounting interfaces.

[0095] Optionally, the second moving rail is formed as an elongated hole, and the wear detection device 62 may be provided with a sliding block adapted to the elongated hole. The sliding block is movably engaged with the second moving rail to facilitate the movement of the geometric detection device 42 relative to the geometric detection mounting bracket 41. Providing multiple second mounting interfaces facilitates the installation of corresponding wear detection devices 62, such as cameras, lasers, etc., as needed during the testing process. In this way, the mating structure between the wear detection device 62 and the wear detection mounting bracket 61 is relatively simple, easy to manufacture and assemble, and can adapt to the verification of different wear detection systems 100.

[0096] In some embodiments, reference Figure 1 and Figure 9The contact wire inspection device testing system 100 may further include a track trolley 31. The track trolley 31 is movably mounted on the track 21. The track trolley 31 is equipped with a first support 311, a second support 312, and a third support 313. The first support 311, the second support 312, and the third support 313 are spaced apart from each other. The first support 311 is located in front of the second support 312 in the direction of movement of the track trolley 31. The third support 313 is located between the first support 311 and the second support 312. A first detection unit 40 is mounted on the first support 311, a second detection unit 50 is mounted on the second support 312, and a third detection unit 60 is mounted on the third support 313. In this way, the first detection unit 40, the second detection unit 50, and the third detection unit 60 are arranged in sections on the track trolley 31, which can avoid mutual interference when they are working.

[0097] Optionally, the first bracket 311, the second bracket 312 and the third bracket 313 can all be welded from square steel pipes and fixed on the chassis of the track trolley 31. In this way, the structure is simple, easy to manufacture and has a low cost.

[0098] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0099] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0100] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0101] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0102] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A contact wire simulation device, characterized in that, The overhead contact line simulation device is installed on the track device of the overhead contact line testing system. The track device includes two parallel tracks. The overhead contact line simulation device includes: The first column assembly and the second column assembly are respectively located on opposite sides of the two rails and are spaced apart along the length of the rails. The contact wire includes a first contact wire and a second contact wire. The first contact wire provides a detection environment for a first set of parameters, and the second contact wire provides a detection environment for a second set of parameters and a third set of parameters. The first set of parameters includes at least one of the conductor height and the pull-out value of the contact wire. The second set of parameters includes at least one of the contact pressure and the hard point of the contact wire. The third set of parameters includes the wear of the contact wire. The first contact wire and the second contact wire are selectively suspended on the first column assembly and the second column assembly to detect corresponding data. At any given time, only one of the first contact wire and the second contact wire is erected on the first column assembly and the second column assembly for testing. Tensioning assembly, wherein the tensioning assembly is connected to one end of the first contact line or the second contact line; The first column assembly has a plurality of first suspension points arranged at intervals in the vertical direction, and the second column assembly has a plurality of first pulley units. One end of the contact wire is connected to one of the plurality of first suspension points, and the other end is wound around a portion of the first pulley units and connected to the tensioning assembly. Each first suspension point and a portion of the first pulley units define a height level. The first contact wire is located on any one of the plurality of height levels, and the second contact wire is located on one of the plurality of height levels that is adapted to the height of the pantograph simulation component of the contact wire detection device test system. The first column assembly includes: A first upper bracket, on which a portion of the first suspension points are provided; The first lower bracket is located below the first upper bracket, and the first lower bracket is provided with the remaining part of the first suspension point; The second column assembly includes: The second upper bracket is provided with a portion of the first pulley unit; The second lower bracket consists of multiple brackets of different lengths that are interchangeable. The second lower bracket is located below the second upper bracket and has the remaining portion of the first pulley unit.

2. The overhead contact line simulation device according to claim 1, characterized in that, The first column assembly also includes: The first column is connected to the track device; The second column assembly also includes: The second column is connected to the track device.

3. The overhead contact line simulation device according to claim 2, characterized in that, The second column assembly also includes: The third bracket is located on the side of the second column facing away from the track. The third bracket is equipped with a second pulley unit. The other end of the contact line passes through a portion of the first pulley unit and the second pulley unit in sequence and is then connected to the tensioning assembly.

4. The overhead contact line simulation device according to any one of claims 1-3, characterized in that, The tensioning component includes: A tray, the tray being suspended at the end of the contact line away from the first suspension point; At least one weight is placed on the tray to provide tension to the contact line.

5. The overhead contact line simulation device according to any one of claims 1-3, characterized in that, Also includes: A wear test bar, which is arranged parallel to and in contact with the second contact line to provide a wear detection environment for the contact line; The fixing clips are multiple, and the multiple fixing clips hold the wear test bar and the second contact wire.

6. The overhead contact line simulation device according to any one of claims 1-3, characterized in that, The first pulley unit includes: Mounting base, the mounting base defining a rolling channel, the mounting base having a rotating hole communicating with the rolling channel; A rotating shaft, which passes through the rotating hole; A pulley is rotatably fitted onto the rotating shaft and located within the rolling channel. The surface of the pulley is provided with a mating groove adapted to the contact line, and the contact line is mated within the mating groove.

7. The overhead contact line simulation device according to claim 6, characterized in that, The first pulley unit further includes: A bearing is provided between the pulley and the shaft, the shaft having an oil injection hole, one end of which passes through the shaft end of the shaft and the other end of which extends and communicates with the bearing; An oil cup is provided at the end of the oil injection hole away from the bearing to inject oil into the oil injection hole.

8. A test system for a contact wire inspection device, characterized in that, include: Track device; The overhead contact line simulation device according to any one of claims 1-7, wherein the overhead contact line simulation device is disposed on the track device.

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