Rigid catenary modular repair device

By integrating modular repair equipment with detection milling and grinding, polishing and coating devices, and adopting automation and intelligent control, the problem of contact line wear defects is solved, and efficient and accurate repair effects and lubrication protection are achieved.

CN119369038BActive Publication Date: 2025-10-17DONGGUAN NANNAR ELECTRONICS TECH
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Patent Information

Application Number
CN202411722772.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-10-17
Estimated Expiration
2044-11-28

AI Technical Summary

Technical Problem

In the prior art, the wear of the contact line of the rigid contact network leads to defects such as sharp corners and edges, which affect the service life and appearance, and the conventional repair method is inefficient and costly.

Method used

A modular repair equipment for rigid contact network is designed, which integrates detection and milling device, grinding and polishing device and main control device. It adopts automation and intelligent control, and realizes precise milling and grinding and polishing by coordinating the scanning component with the milling component. It also coats a graphite layer to improve the lubricity of the contact line surface.

Benefits of technology

It achieves efficient and accurate repair of the contact line, improves the service life and appearance quality of the contact line, and reduces labor costs and time consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

A rigid contact net modular repair equipment, it includes detection milling device, polishing coating device and master control device, the detection milling device and polishing coating device are all clamped and installed on the contact net and are arranged in front and back in turn, the master control device is signal connected with the detection milling device and polishing coating device respectively, the detection milling device includes first mounting bracket, first drive assembly, first driven assembly, scanning assembly and milling assembly which are installed in the first mounting bracket, the polishing coating device includes second mounting bracket, second drive assembly, second driven assembly, polishing assembly, polishing assembly, coating assembly and monitoring assembly which are installed on the second mounting bracket, the milling processing and polishing coating device are integrated at the same time, the master control device is used for controlling the operation of each module automatically and intelligently, so that the repair equipment can carry out comprehensive and efficient repair work, the application has strong practicality and strong popularization significance.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of train track, in particular to a rigid catenary modular repair equipment. BACKGROUND

[0002] The rigid catenary is mainly composed of overhead rigid busbar, contact wire, support positioning device, insulation component, overhead ground wire and the like. The mechanical friction and electrical wear between the contact wire and the carbon slide plate can cause defects such as sharp corners, burrs, roughness at the friction surface and the contact wire arc, and the sharp edges on both sides of the contact wire, the increased wear contact area, which can easily cause the carbon slide plate to wear faster, and the like, affecting the service life and appearance neatness of the catenary.

[0003] To solve the defects such as sharp corners, burrs, burrs and roughness on both sides of the contact wire, appropriate milling, polishing and other processing measures are usually taken. The conventional contact wire milling and polishing method is usually to use manual milling and polishing tools to mill and polish the contact wire by professional operators. This operation method not only has low efficiency, but also has poor processing effect and high cost. SUMMARY

[0004] Therefore, it is necessary to provide a rigid catenary modular repair equipment aiming at the deficiencies in the prior art.

[0005] A rigid catenary modular repair equipment, which comprises a detection milling device, a polishing and coating device and a main control device, the detection milling device and the polishing and coating device are clamped and arranged on the catenary and arranged in sequence, and the main control device is signal connected with the detection milling device and the polishing and coating device.

[0006] The detection milling device comprises a first mounting frame, a first driving assembly, a first driven assembly, a scanning assembly and a milling assembly arranged in the first mounting frame. The scanning assembly comprises a front profile scanning camera and a rear profile scanning camera, which are arranged on the front and rear sides of the milling assembly. The milling assembly comprises two milling devices, and the milling device comprises a milling motor, a milling rack and a shaped milling cutter. The milling motor is arranged on the first mounting frame, the milling rack is arranged on the milling motor, and the shaped milling cutter is arranged on the inner side end of the milling rack. The shaped milling cutters of the two milling devices are arranged in opposite and staggered positions. The shaped milling cutter is arranged in a gradually decreasing conical table from the inner side end to the free end, and the connecting surfaces at both ends are arc surfaces.

[0007] The polishing and coating device comprises a second mounting frame, a second driving assembly, a second driven assembly, a grinding assembly, a polishing assembly, a coating assembly and a monitoring assembly which are arranged in sequence from front to back. The coating assembly comprises a coating frame and a coating wheel. The coating frame is arranged on the second mounting frame, and the coating wheel is arranged on the coating frame and rotates. The coating wheel is made of graphite material.

[0008] The main control device comprises a PLC control device, an industrial control host and an interactive terminal. The PLC control device, the industrial control host and the interactive terminal are sequentially connected in signal. The PLC control device is further connected in signal with the first driving assembly, the second driving assembly, the milling assembly, the grinding assembly and the polishing assembly. The industrial control host is further connected in signal with the scanning assembly and the monitoring assembly.

[0009] Further, the first mounting frame comprises a first bottom plate and first side plates arranged on both sides of the first bottom plate. The first driving assembly is arranged on the first bottom plate, and the first driven assembly is arranged on the first side plates. The second mounting frame comprises a second bottom plate and second side plates arranged on both sides of the second bottom plate. The second driving assembly is arranged on the second bottom plate, and the second driven assembly is arranged on the second side plates. The first mounting frame further comprises an adjusting plate. The first bottom plate is provided with adjusting slide rails which extend along the arrangement direction of the two first side plates. The adjusting plate is arranged on the adjusting slide rails and can move along the adjusting slide rails. The milling assembly is arranged on the adjusting plate.

[0010] Further, the first driving assembly and the second driving assembly each comprise a support rod, a driving frame, a driving wheel, a driving motor and a first telescopic spring. The support rod is arranged on the first bottom plate and the second bottom plate. The driving frame is arranged on the upper end of the support rod. The driving wheel and the driving motor are arranged on the driving frame, and the driving motor is connected in power with the driving wheel. The first telescopic spring is sleeved on the support rod and abuts against the bottom plate and the driving frame at both ends. The support rod can be adjusted in extension and retraction relative to the first bottom plate and the second bottom plate.

[0011] Further, the first driven assembly and the second driven assembly each comprise a plurality of driven devices. The inner side of the driven device is provided with a driven wheel. The plurality of driven devices are uniformly arranged on the first side plates and the second side plates. The outer side of the driven device is further provided with a handle.

[0012] Further, the detection milling device further comprises a positioning assembly. The positioning assembly comprises two positioning devices which are arranged on the front and rear sides of the milling device respectively. The positioning device comprises a positioning frame and a positioning wheel. The positioning frame is arranged on the first bottom plate, and the positioning wheel is arranged on the positioning frame.

[0013] Furthermore, the grinding assembly includes a grinding frame, a grinding wheel and a grinding motor. The grinding wheel is mounted on the grinding frame, and the grinding motor drives the grinding wheel to rotate.

[0014] Furthermore, the polishing assembly includes a polishing frame, a polishing wheel and a polishing motor. The polishing wheel is mounted on the polishing frame, and the polishing motor drives the polishing wheel to rotate.

[0015] Furthermore, the monitoring component includes an industrial camera, which is installed on the second base plate and is signal-connected to the industrial control host.

[0016] To sum up, the beneficial effects of the modular repair equipment of a rigid contact network of the present invention are: by simultaneously integrating milling processing and grinding and polishing coating devices, and cooperating with the main control device that automatically and intelligently controls the operation of each module, the repair equipment can perform comprehensive and efficient repair operations on the contact line; the scanning component and the milling component are used in the detection milling device to cooperate with each other, so that the milling processing of the contact line surface by the detection milling device is more accurate and reliable, and the forming milling cutter in the milling component is two sets of independent control and asymmetrical arrangement, so that both sides of the contact line can obtain the best milling and grinding effect; and the grinding component and the coating component in the grinding and polishing coating device can grind and polish the surface of the contact line and coat it with graphite coating in turn, which can not only further repair the defects of the contact line itself, but also effectively improve the lubricity of the contact line surface, thereby protecting the contact line so that it can better contact and rub with the carbon slide plate; the present invention has strong practicality and strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a modular repair device for rigid contact network according to the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the detection milling module;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the grinding, polishing and coating module;

[0020] Figure 4 for Figure 2 Schematic diagram of the decomposition structure;

[0021] Figure 5 for Figure 3 Schematic diagram of the decomposition structure;

[0022] Figure 6 for Figure 4 A schematic diagram of the exploded structure of the first mounting housing;

[0023] Figure 7 for Figure 5The exploded structural schematic view of the second installation shell in the application;

[0024] Figure 8 For Figure 4 The structural schematic view of the first driving assembly and the first driven assembly in the application;

[0025] Figure 9 For Figure 8 The exploded structural schematic view of the first driving assembly in the application;

[0026] Figure 10 For Figure 8 The exploded structural schematic view of the first driven assembly in the application;

[0027] Figure 11 For Figure 4 The structural schematic view of the scanning assembly in the application;

[0028] Figure 12 For Figure 4 The exploded structural schematic view of the milling assembly in the application;

[0029] Figure 13 For Figure 4 The exploded structural schematic view of the positioning assembly in the application;

[0030] Figure 14 For Figure 5 The structural schematic view of the polishing assembly and the polishing assembly in the application;

[0031] Figure 15 For Figure 5 The exploded structural schematic view of the coating assembly in the application;

[0032] Figure 16 For Figure 5 The structural schematic view of the monitoring assembly in the application;

[0033] Figure 17 The contact line profile diagram obtained by the scanning assembly in the application after scanning the contact line;

[0034] Figure 18 The comparative analysis diagram of the contact line profile and the ideal circle by the master control device in the application. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the application more clear and understandable, the application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.

[0036] As Figures 1 to 18As shown, the present application provides a rigid catenary modular repair equipment 100, which comprises a detection milling device 10, a grinding polishing coating device 20 and a master control device (not shown), the detection milling device 10 and the grinding polishing coating device 20 are clamped and arranged on the catenary in sequence, and the master control device is signal connected with the detection milling device 10 and the grinding polishing coating device 20 respectively.

[0037] The detection milling device 10 comprises a first mounting frame 11, a first driving assembly 12, a first driven assembly 13, a scanning assembly 14 and a milling assembly 15 arranged in the first mounting frame 11. The grinding polishing coating device 20 comprises a second mounting frame 21, a second driving assembly 22, a second driven assembly 23, a grinding assembly 24, a polishing assembly 25, a coating assembly 26 and a monitoring assembly 27 arranged on the second mounting frame 21 in sequence from front to back.

[0038] The first mounting frame 11 comprises a first bottom plate 111 and a first side plate 112 arranged on both sides of the first bottom plate 111, the first driving assembly 12 is arranged on the first bottom plate 111, and the first driven assembly 13 is arranged on the first side plate 112. The second mounting frame 21 comprises a second bottom plate 211 and a second side plate 212 arranged on both sides of the second bottom plate 211, the second driving assembly 22 is arranged on the second bottom plate 211, and the second driven assembly 23 is arranged on the second side plate 212. The first mounting frame 11 further comprises an adjusting plate 113, the first bottom plate 111 is provided with an adjusting slide rail 111a extending along the arrangement direction of the two first side plates 112, the adjusting plate 113 is clamped and arranged on the adjusting slide rail 111a and can move along the adjusting slide rail 111a, and the milling assembly 15 is arranged on the adjusting plate 113. The first bottom plate 111 with the slide rail structure and the adjusting plate 113 can be adjusted and slid, so that the milling assembly 15 arranged thereon can be adjusted in position and accurately correspond to the contact line at any time.

[0039] The first driving assembly 12 and the second driving assembly 22 have the same structural design, and each includes a support rod 121, a driving frame 122, a driving wheel 123, a driving motor 124 and a first telescopic spring 125. The support rod 121 is arranged on the first bottom plate 111 and the second bottom plate 211, the driving frame 122 is arranged on the upper end of the support rod 121, the driving wheel 123 and the driving motor 124 are arranged on the driving frame 122, and the driving motor 124 is in power connection with the driving wheel 123. The first telescopic spring 125 is sleeved on the support rod 121 and the two ends thereof are respectively in abutment with the bottom plate and the driving frame 122, and the support rod 121 can be telescopically adjusted relative to the first bottom plate 111 and the second bottom plate 211. The first driving assembly 12 and the second driving assembly 22 can respectively provide driving power for the detection milling device 10 and the polishing coating device 20, so that the two can travel along the catenary while continuously repairing the contact line. The automatic driving structure is not only more reliable than manual driving, but also more accurate and uniform in speed control.

[0040] The first driving assembly 12 and the second driving assembly 22 have the same structural design, and each includes a support rod 121, a driving frame 122, a driving wheel 123, a driving motor 124 and a first telescopic spring 125. The support rod 121 is arranged on the first bottom plate 111 and the second bottom plate 211, the driving frame 122 is arranged on the upper end of the support rod 121, the driving wheel 123 and the driving motor 124 are arranged on the driving frame 122, and the driving motor 124 is in power connection with the driving wheel 123. The first telescopic spring 125 is sleeved on the support rod 121 and the two ends thereof are respectively in abutment with the bottom plate and the driving frame 122, and the support rod 121 can be telescopically adjusted relative to the first bottom plate 111 and the second bottom plate 211. The first driving assembly 12 and the second driving assembly 22 can respectively provide driving power for the detection milling device 10 and the polishing coating device 20, so that the two can travel along the catenary while continuously repairing the contact line. The automatic driving structure is not only more reliable than manual driving, but also more accurate and uniform in speed control.

[0041] The scanning assembly 14 includes a front profile scanning camera 141 and a rear profile scanning camera 142, which are arranged on the front and rear sides of the milling assembly 15 respectively. Before milling repair, the profile scanning camera on one side scans and detects the surface profile of the contact line, and cooperates with the main control device to accurately mill and repair the defects of the contact line. After milling repair, the profile scanning camera on the other side scans and detects the surface profile of the contact line again to confirm the milling repair effect of the contact line. If there are still defects, the milling assembly 15 will perform milling repair again to ensure that all defects on the surface of the contact line can be repaired.

[0042] The milling assembly 15 comprises two milling devices 151, each of which comprises a milling motor 151a, a milling frame 151b and a profile milling cutter 151c. The milling motor 151a is arranged on the first mounting frame 11, the milling frame 151b is arranged on the milling motor 151a, and the profile milling cutter 151c is arranged on the inner side end of the milling frame 151b. The profile milling cutters 151c of the two milling devices 151 are arranged in opposite positions. The profile milling cutter 151c is arranged in a tapered conical shape from the inner side end to the free end, and the connecting surfaces at both ends are arc surfaces. Specifically, in this embodiment, the two profile milling cutters 151c are arranged in opposite positions on the left and right and staggered positions in front and back.

[0043] During milling, the profile milling cutter 151c is first adjusted to be in contact with the two sides of the contact line, and then the milling motor 151a drives the profile milling cutter 151c to rotate at high speed, so that the profile milling cutters 151c on both sides can respectively mill and repair the two sides of the contact line. By using two independent milling structures to automatically mill and repair the two sides of the contact line, different wear defects on the two sides of the contact line can be freely dealt with, and the milling and repairing effect can be greatly improved.

[0044] The polishing assembly 25 comprises a polishing frame (not shown in the figure), a polishing wheel 251 and a polishing motor (not shown in the figure). The polishing wheel 251 is arranged on the polishing frame, and the polishing motor drives the polishing wheel 251 to rotate. Specifically, in this embodiment, the material of the polishing wheel 251 is cotton cloth, felt, fiber or other non-metallic materials with better elasticity.

[0045] During the polishing process, the polishing wheel 241 and the polishing wheel 251 are driven by the polishing motor and the polishing motor respectively to polish and polish the surface of the contact line in turn. Both motors are brushless motors, which not only have large power, but also have small vibration and noise during operation. In addition, the speed of the polishing motor driving the polishing wheel 251 is faster than that of the polishing motor driving the polishing wheel 241, so as to ensure that the surface of the contact line after polishing is smoother.

[0046] The coating assembly 26 comprises a coating frame 261 and a coating wheel 262. The coating frame 261 is arranged on the second mounting frame 21, and the coating wheel 262 is arranged on the coating frame 261 and rotates. The material of the coating wheel 262 is graphite material. The graphite material coating wheel 262 will also roll and rub with the contact line when the equipment moves, so as to coat a layer of graphite on the surface of the contact line. The graphite layer not only has lubricating effect, but also can enhance the oxidation resistance of the contact line to a certain extent.

[0047] The monitoring assembly 27 comprises an industrial camera 271 mounted on the second bottom plate 211 and signal connected to the industrial host computer. The host control device comprises a PLC control device (not shown), an industrial host computer (not shown) and an interactive terminal (not shown). The PLC control device, the industrial host computer and the interactive terminal are signal connected in turn, wherein the PLC control device is further signal connected with the first driving assembly 12, the second driving assembly 22, the milling assembly 15, the polishing assembly 24 and the polishing assembly 25, and the industrial host computer is further signal connected with the scanning assembly 14 and the monitoring assembly 27.

[0048] In the process of controlling the working of the repair equipment, the operation personnel first sets the relevant operating parameters through the interactive terminal and sends them to the industrial host computer unit. After receiving the operating parameters, the industrial host computer unit further sends control commands to the PLC control unit, and the repair equipment starts to work under the control of the PLC control unit. When the repair equipment mills, grinds and polishes the contact line, the scanning assembly 14 first detects the profile data of the contact line surface and feeds back to the industrial host computer unit, and then the industrial host computer unit sends adjustment commands to the PLC control unit according to the detected scanning data, and finally the PLC adjusts the driving assembly, the milling assembly 15, the polishing assembly 24 and other components to adjust the milling position, the milling feed amount and the polishing and polishing intensity. In addition, the working state of each component during the milling repair process, the contact line parameters scanned by the scanning assembly 14 and the contact line image photographed by the monitoring assembly and other data are uploaded to the industrial host computer unit for storage management, and at the same time, the industrial host computer unit also feeds back to the interactive terminal to display to the operation personnel in real time.

[0049] The detection milling device 10 further comprises a positioning assembly 16, which comprises two positioning devices 161 respectively arranged on the front and rear sides of the milling device 151. The positioning device 161 comprises a positioning frame 161a and a positioning wheel 161b, wherein the positioning frame 161a is arranged on the first bottom plate 111, and the positioning wheel 161b is arranged on the positioning frame 161a. In the process of milling repair of the repair equipment, the positioning wheel 161b on the positioning assembly 16 always rolls along the contact line, thereby ensuring that the milling assembly 15 also arranged on the adjusting plate 113 does not shake and deviate.

[0050] In summary, the rigid catenary modular repair equipment 100 has the beneficial effects that: by simultaneously integrating the milling and polishing coating device 20, cooperating with the main control device for automatically and intelligently controlling the operation of each module, the repair equipment can comprehensively and efficiently repair the contact line; the scanning assembly 14 and the milling assembly 15 in the milling device 10 are used to cooperate, so that the milling device 10 can mill the surface of the contact line more accurately and reliably, and the profile milling cutter 151c in the milling assembly 15 is independently controlled and asymmetrically arranged, so that the both sides of the contact line can obtain the best milling and polishing effect; the polishing assembly 24 and the coating assembly 26 in the polishing coating device 20 can polish and polish the surface of the contact line in turn and coat the graphite coating, which can not only further repair the defects of the contact line itself, but also effectively improve the lubricity of the surface of the contact line, so as to protect the contact line and make it better contact and rub with the carbon slide plate; the application has strong practicability and strong popularization significance.

[0051] The above-described embodiments only express one implementation of the application, which is described in detail and specifically, but cannot be understood as the limitation of the scope of the application patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which belong to the protection scope of the application. Therefore, the protection scope of the application patent should be subject to the appended claims.

Claims

1. A modular repair device for rigid contact network, characterized by: It includes a detection milling device, a grinding and polishing coating device and a main control device. The detection milling device and the grinding and polishing coating device are both mounted on the contact network and arranged in front and back order. The main control device is respectively connected to the detection milling device and the grinding and polishing coating device by signal. The detection milling device includes a first mounting frame and a first driving assembly, a first driven assembly, a scanning assembly, and a milling assembly installed in the first mounting frame; the scanning assembly includes a front contour scanning camera and a rear contour scanning camera, and the front contour scanning camera and the rear contour scanning camera are respectively arranged on the front and rear sides of the milling assembly; the milling assembly includes two milling devices, and the milling device includes a milling motor, a milling frame and a forming milling cutter, the milling motor is installed on the first mounting frame, the milling frame is installed on the milling motor, and the forming milling cutter is installed on the inner end of the milling frame, and the forming milling cutters of the two milling devices are opposite to each other left and right and staggered front and back; the forming milling cutter is arranged in a truncated cone that gradually becomes smaller from the inner end to the free end, and the connecting surfaces at both ends are arc surfaces; The grinding, polishing and coating device includes a second mounting frame and a second driving assembly, a second driven assembly, a grinding assembly, a polishing assembly, a coating assembly, and a monitoring assembly mounted on the second mounting frame, wherein the grinding assembly, the polishing assembly, the coating assembly, and the monitoring assembly are arranged in sequence from front to back; the coating assembly includes a coating frame and a coating wheel, wherein the coating frame is mounted on the second mounting frame, and the coating wheel is mounted on the coating frame and rotates, and the coating wheel is made of graphite material; The main control device includes a PLC control device, an industrial control host and an interactive terminal; the PLC control device, the industrial control host and the interactive terminal are connected in sequence by signals, wherein the PLC control device is also connected by signals to the first drive component, the second drive component, the milling component, the grinding component and the polishing component, and the industrial control host is also connected by signals to the scanning component and the monitoring component.

2. The rigid catenary modular repair device according to claim 1, characterized in that: The first mounting frame includes a first base plate and first side plates arranged on both sides of the first base plate, the first driving assembly is mounted on the first base plate, and the first driven assembly is mounted on the first side plate; the second mounting frame includes a second base plate and second side plates arranged on both sides of the second base plate, the second driving assembly is mounted on the second base plate, and the second driven assembly is mounted on the second side plate; the first mounting frame also includes an adjustment plate, an adjustment slide rail is provided on the first base plate, the adjustment slide rail extends along the arrangement direction of the two first side plates, the adjustment plate is snap-fitted and mounted on the adjustment slide rail and can move along the adjustment slide rail, and the milling assembly is mounted on the adjustment plate.

3. The modular repair device for rigid catenary according to claim 2, characterized in that: The first drive assembly and the second drive assembly both include a support rod, a drive frame, a drive wheel, a drive motor and a first telescopic spring; the support rod is mounted on the first base plate and the second base plate, the drive frame is mounted on the upper end of the support rod, the drive wheel and the drive motor are both mounted on the drive frame, and the drive motor is dynamically connected to the drive wheel; the first telescopic spring is sleeved on the support rod and its two ends respectively abut against the base plate and the drive frame, and the support rod can be movably telescopically adjusted relative to the first base plate and the second base plate.

4. The modular repair device for rigid catenary according to claim 2, characterized in that: The first driven assembly and the second driven assembly each include a plurality of driven devices, wherein a driven wheel is provided on the inner side of the driven device; the plurality of driven devices are evenly mounted on the first side plate and the second side plate; and a handle is further provided on the outer side of the driven device.

5. The rigid catenary modular repair device according to claim 2, characterized in that: The detection milling device also includes a positioning component, which includes two positioning devices, and the two positioning devices are respectively arranged on the front and rear sides of the milling device; the positioning device includes a positioning frame and a positioning wheel, the positioning frame is arranged on the first base plate, and the positioning wheel is arranged on the positioning frame.

6. The rigid catenary modular repair device according to claim 1, characterized in that: The grinding assembly includes a grinding frame, a grinding wheel and a grinding motor. The grinding wheel is installed on the grinding frame, and the grinding motor drives the grinding wheel to rotate.

7. The modular repair device for rigid catenary according to claim 1, characterized in that: The polishing assembly comprises a polishing frame, a polishing wheel and a polishing motor. The polishing wheel is mounted on the polishing frame, and the polishing motor drives the polishing wheel to rotate.

8. The modular repair device for rigid catenary according to claim 2, characterized in that: The monitoring component includes an industrial camera, which is installed on the second base plate and has a signal connection with the industrial control host.

Citation Information

Patent Citations

  • Finish-milling unit of mobile rail-milling car

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