Intelligent rigid catenary maintenance ladder truck
The design of the intelligent rigid contact wire maintenance ladder truck enables automatic identification and dynamic control of contact wire grinding, solving the problems of low efficiency and high safety hazards of traditional manual maintenance, and improving maintenance efficiency and contact wire stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XIJIAO RAIL VEHICLE EQUIPMENT CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional manual grinding of rigid contact wires is inefficient, poses significant safety hazards, and is difficult to effectively address issues such as anchor sections, pull-out values, and uneven wear of the contact wire, resulting in high maintenance costs, low efficiency, and poor safety.
Design an intelligent rigid contact wire maintenance ladder truck, equipped with an XY control platform, identification unit, control unit, belt sander, and lidar, to achieve automatic identification, sanding path planning, and dynamic control, and automatically complete the contact wire maintenance task.
It improves the efficiency of contact wire maintenance, reduces labor intensity, ensures safety, solves the problem of uneven wear of contact wire, extends the service life of contact wire, and reduces maintenance costs.
Smart Images
Figure CN224223519U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rigid contact network maintenance equipment, specifically relating to an intelligent rigid contact network maintenance ladder vehicle. Background Technology
[0002] Rigid overhead contact lines are a crucial component of rail transit power supply systems. These systems transmit electrical energy directly to electric locomotives or subway trains via a rigid metal structure. Their core characteristic is the use of tension-free, rigid conductors (such as aluminum alloy busbars) instead of the wires and catenary cables of traditional flexible contact lines. With continuous train operation, the surface of the contact wires held by the rigid contact line is prone to wear. This not only affects the stability of the power supply system but can also lead to equipment failures and safety hazards. Therefore, regular maintenance of the rigid contact line is a critical measure to ensure the normal operation of the power supply system.
[0003] Traditional rigid contact wire maintenance involves manual grinding. This process requires using a ladder truck for elevated work, where maintenance personnel use coarse and fine sandpaper to grind and polish along the contact wire. This process is physically demanding, and the manual grinding pressure is inconsistent. Too low a pressure results in poor grinding, leading to repeated grinding of the same spot and low efficiency; too high a pressure causes over-grinding, reducing the contact wire's lifespan, affecting the pantograph-catenary coupling, and consequently impacting train stability. Furthermore, the maintenance process poses safety hazards. Burrs on the contact wire can cut maintenance personnel, and the large amount of metal particles and dust generated during grinding can seriously affect their health if inhaled.
[0004] Furthermore, rigid contact wire systems contain anchor sections and pull-out value sections. An anchor section refers to a segment along the contact wire of a certain length with independent mechanical stability. The two busbars of the anchor section are staggered at the junction to ensure smooth pantograph connection. The pull-out value refers to a certain offset between the contact wire and the center of the pantograph's sliding plate on the locomotive, at a designated point along the line to ensure reliable contact between the pantograph and the contact wire, prevent wire detachment, and ensure uniform pantograph wear. Anchor sections and pull-out value sections increase the workload of manual contact wire maintenance. In some locations, manual maintenance is impossible, necessitating the replacement of the entire contact wire, thus increasing maintenance costs and reducing efficiency.
[0005] The following problems exist in the use of rigid contact wires: uneven wear is a common issue. Due to uneven contact between the contact wire and the carbon contact plate of the pantograph, one side of the contact wire wears severely while the other side wears less. This phenomenon alters the geometry of the contact wire, affecting its lifespan and the stability and reliability of the power supply. When uneven wear occurs, manual re-grinding is required to restore the contact wire's geometry to an arc shape, preventing a "sharp edge" phenomenon between the contact wire and the carbon contact plate, which would affect the pantograph-catenary relationship. Uneven wear not only increases the difficulty of manual maintenance but also the difficulty of controlling the grinding pressure during maintenance. Some uneven wear locations are particularly challenging, leading to poor manual restoration results. Utility Model Content
[0006] Based on the problems existing in the above-mentioned background technology, this utility model proposes an intelligent rigid contact network maintenance ladder vehicle, which solves the problem of low grinding efficiency in the existing technology of manual grinding and maintenance of rigid contact networks.
[0007] The embodiments of this utility model are implemented as follows:
[0008] This utility model provides an intelligent rigid contact network maintenance ladder truck, which includes a traveling ladder truck body, a ladder truck maintenance platform is provided on the top of the traveling ladder truck body, and a grinding component is provided on the ladder truck maintenance platform;
[0009] The grinding assembly includes an XY control platform, on which a first mounting plate is fixedly mounted. At least one set of belt grinding devices is mounted on the first mounting plate. Each set of belt grinding devices includes a second mounting plate mounted on top of the first mounting plate. An electric cylinder and multiple guide rods are disposed between the second and first mounting plates. A pressure sensor is mounted on the piston end of the electric cylinder and is fixedly connected to the lower end face of the second mounting plate. A support seat is vertically mounted on the upper end face of the second mounting plate. A rotating shaft is mounted on the support seat, passing through the support seat. A mounting frame and an angle adjustment motor are respectively connected to both ends of the rotating shaft. At least two idler wheel mounting shafts are mounted on the mounting frame. Each idler wheel mounting shaft has at least one synchronous pulley. One idler wheel mounting shaft is driven by the grinding motor to rotate around its own axis. A grinding belt is disposed between the multiple synchronous pulleys on the two idler wheel mounting shafts. The bottom of the angle adjustment motor is fixedly connected to the upper end face of the second mounting plate. The output shaft of the angle adjustment motor is connected to the rotating shaft, driving the rotating shaft to rotate around its own axis.
[0010] The ladder truck maintenance platform is also equipped with an identification unit and a control unit that are electrically connected to each other; the identification unit is used to automatically identify the rigid contact wire model and transmit the identified data to the control unit, and the pressure sensor, angle adjustment motor and grinding motor in the grinding assembly are all electrically connected to the control unit.
[0011] Furthermore, the grinding assembly also includes a scissor lift platform, which is installed on the ladder truck maintenance platform. The XY control platform is located on top of the scissor lift platform, and the lifting fork drive motor in the scissor lift platform is electrically connected to the control unit.
[0012] Furthermore, two sets of the aforementioned belt sanding devices are symmetrically arranged on the first mounting plate, and the two sanding motors in the two sets of belt sanding devices rotate in opposite directions; the sanding belts in the two sets of belt sanding devices have different mesh counts.
[0013] Furthermore, each of the idler wheel mounting shafts is provided with two synchronous pulleys.
[0014] Furthermore, the mounting bracket is provided with three idler wheel mounting shafts, which are arranged in an inverted triangular shape, with the lowest idler wheel mounting shaft connected to the grinding motor.
[0015] Furthermore, each of the aforementioned belt sanding devices is equipped with a contact line identification device, which is installed on the top of the support base and is electrically connected to the control unit.
[0016] Furthermore, the main body of the mobile ladder truck includes a ladder truck chassis and a ladder truck support mounted on the ladder truck chassis, with the ladder truck maintenance platform located on top of the ladder truck support; the ladder truck chassis includes a power supply, a travel drive motor, and two axles; the two axles are respectively located on the front and rear sides of the mobile ladder truck body, and each axle has a ladder truck wheel adapted to the rail on both sides; the travel drive motor is connected to one of the axles through a reducer, and the power supply provides power to the travel drive motor; the travel drive motor is electrically connected to the control unit.
[0017] Furthermore, a lidar electrically connected to the control unit is installed on either the front or rear side of the ladder truck chassis.
[0018] Furthermore, an encoder electrically connected to the control unit is provided on the shaft connected to the walking drive motor.
[0019] Furthermore, the ladder truck maintenance platform is equipped with a protective fence, and the protective fence is equipped with a gate.
[0020] The basic working principle of this utility model is as follows: First, maintenance personnel confirm the lifespan of the sanding belt in the sanding assembly. Then, the sanding assembly is assembled onto the maintenance platform of the maintenance ladder truck. The intelligent rigid contact network maintenance ladder truck performs a self-test upon startup. After the self-test is completed, the maintenance personnel guide the intelligent rigid contact network maintenance ladder truck to the maintenance section. The identification unit scans and identifies the rigid contact network model of that section, the contact wire identification device scans the contact wire condition, and the parameters are automatically input into the control unit. This interacts with the maintenance database to provide the component configuration parameters for the optimal sanding scheme, such as the sanding path, sanding angle, and sanding pressure. Next, the XY control platform controls the sanding path of the sanding belt sanding device, the angle adjustment motor controls the sanding angle of the sanding device, and the electric push cylinder and pressure sensor work together to control the sanding pressure of the sanding device. The sanding scheme is completed according to the configuration parameters. While executing the sanding scheme, the identification unit simultaneously scans the remaining rigid contact network model, achieving the function of simultaneous sanding and identification. After the grinding plan is completed, the contact wire identification device scans the ground contact wire model and inputs the parameters into the control unit to determine whether grinding is needed again. If so, a new grinding plan is provided based on the data interaction. If not, the intelligent rigid contact network maintenance ladder performs a self-check, including checking the remaining power supply, the functionality of the identification unit, pressure sensor, and contact wire identification device, and the remaining grinding life of the grinding belt.
[0021] After completing the maintenance work on this section of the rigid contact network, the intelligent rigid contact network maintenance ladder performs a self-check. If the working conditions are met, the travel drive motor starts, propelling the entire intelligent rigid contact network maintenance ladder along the rails to the next grinding section, where it automatically executes the aforementioned work process. If the working conditions are not met, the intelligent rigid contact network maintenance ladder automatically travels to the inspection station, alerting maintenance personnel to conduct repairs.
[0022] The beneficial effects of this utility model are as follows: This utility model provides an intelligent rigid contact network maintenance ladder cart. Through an identification unit, it acquires maintenance section information such as the anchor section and busbar pull-out values during rigid contact network maintenance, effectively solving the problem of continuous grinding that traditional contact line grinding equipment cannot continuously grind, thus improving the maintenance efficiency of the rigid contact network. The control unit integrates the information of the scanned sections and inputs it into the contact line maintenance database, automatically generating a grinding plan for the scanned sections. After grinding is completed, the contact line identification device re-identifies the contact line model and inputs it into the control unit, which then determines whether the maintenance effect meets the standards. By comparing the data in the maintenance database, the contact line maintenance problems are quantified, effectively solving them. The grinding angle, grinding pressure, and grinding position of the belt sander are adjustable, enabling intelligent contact line maintenance. This effectively solves problems such as uneven wear of the contact line, repairs the contact line profile, and improves the contact line lifespan. The ladder cart chassis allows the entire intelligent rigid contact network maintenance ladder cart to automatically travel along the rails and, in conjunction with various execution units, complete the contact network maintenance tasks, greatly reducing the workload of manual maintenance, effectively addressing the risk factors associated with manual maintenance, and improving the efficiency of contact line maintenance. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of this utility model will become clearer through the drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale to actual dimensions; the focus is on illustrating the main idea of this utility model.
[0024] Figure 1 This is a schematic diagram of an intelligent rigid contact network maintenance ladder vehicle installed on a railway track.
[0025] Figure 2 This is a schematic diagram of the top structure of the traveling ladder truck.
[0026] Figure 3 A schematic diagram of the structure of the XY control platform set on the scissor lift platform.
[0027] Figure 4 This is a schematic diagram of the bottom structure of the traveling ladder truck.
[0028] Figure 5 This is a schematic diagram of the internal structure of the ladder truck chassis.
[0029] Figure 6 This is a schematic diagram of the structure of two sets of belt abrasive grinding devices.
[0030] Figure 7 Schematic diagram of a single-unit belt sander Figure 1 .
[0031] Figure 8 Schematic diagram of a single-unit belt sander Figure 2 .
[0032] The components include: 1. Main body of the traveling ladder truck; 2. Rigid contact line; 3. Rail; 4. Ladder truck maintenance platform; 5. XY control platform; 6. First mounting plate; 7. Sanding belt grinding device; 71. Second mounting plate; 72. Electric push cylinder; 73. Guide rod; 74. Pressure sensor; 75. Support base; 76. Rotary shaft; 77. Mounting frame; 78. Angle adjustment motor; 79. Idler wheel mounting shaft; 710. Synchronous pulley; 711. Sanding belt; 712. Scissor lift platform; 7121. Lifting fork drive motor; 713. Contact line identification device; 714. Grinding motor; 8. Identification unit; 9. Control unit; 10. Ladder truck chassis; 11. Ladder truck bracket; 12. Power supply; 13. Travel drive motor; 14. Two axles; 15. Ladder truck wheels; 16. LiDAR; 17. Encoder; 18. Protective fence; 19. Fence gate. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0036] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0037] Please refer to Figures 1-3 and Figures 6-8As shown, this utility model provides an intelligent rigid contact wire maintenance ladder truck, which includes a traveling ladder truck body 1, a ladder truck maintenance platform 4 is provided on the top of the traveling ladder truck body 1, and a grinding component is provided on the ladder truck maintenance platform 4.
[0038] The grinding assembly includes an XY control platform 5, on which a first mounting plate 6 is fixedly mounted. At least one set of belt grinding devices 7 is mounted on the first mounting plate 6, and the XY control platform 5 can control the grinding position of the belt grinding devices 7. Specifically, each set of belt grinding devices 7 includes a second mounting plate 71 mounted on top of the first mounting plate 6. An electric cylinder 72 and multiple guide rods 73 are disposed between the second mounting plate 71 and the first mounting plate 6. A pressure sensor 74 is mounted on the piston end of the electric cylinder 72 and is fixedly connected to the lower end face of the second mounting plate 71. A support base 75 is vertically mounted on the upper end face of the second mounting plate 71. A rotating shaft 76 is mounted on the support base 75, passing through the support base 75. A mounting bracket is connected to each end of the rotating shaft 76. The mounting bracket 77 and the angle adjustment motor 78 are provided; at least two idler wheel mounting shafts 79 are provided on the mounting bracket 77, and at least one synchronous pulley 710 is provided on each idler wheel mounting shaft 79. One of the idler wheel mounting shafts 79 is driven to rotate around its own axis by a grinding motor 714. A grinding sand belt 711 is provided between the multiple synchronous pulleys 710 on the two idler wheel mounting shafts 79. The bottom of the angle adjustment motor 78 is fixedly connected to the upper end face of the second mounting plate 71. The output shaft of the angle adjustment motor 78 is connected to the rotating shaft 76, driving the rotating shaft 76 to rotate around its own axis.
[0039] The ladder maintenance platform 4 is also equipped with an identification unit 8 and a control unit 9 that are electrically connected to each other; the identification unit 8 is used to automatically identify the rigid contact wire model and transmit the identified data to the control unit 9; the pressure sensor 74, the angle adjustment motor 78 and the grinding motor 714 in the grinding assembly are all electrically connected to the control unit 9.
[0040] Specifically, such as Figure 4 and Figure 5 As shown, the mobile ladder car body 1 includes a ladder car chassis 10 and a ladder car support 11 mounted on the ladder car chassis 10. The ladder car maintenance platform 4 is located on top of the ladder car support 11. The ladder car chassis 10 includes a power supply 12, a travel drive motor 13, and two axles 14. The two axles are respectively located on the front and rear sides of the mobile ladder car body 1, and each axle has a ladder car wheel 15 adapted to the rail 3 on both sides. The travel drive motor 13 is connected to one of the axles through a reducer, and the power supply 12 provides power to the travel drive motor 13. The travel drive motor 13 is electrically connected to the control unit 9.
[0041] During the maintenance of the rigid contact network, maintenance personnel confirm the lifespan of the grinding belt 711 in the grinding assembly. The grinding assembly is then assembled onto the maintenance platform 4 of the maintenance trolley. The intelligent rigid contact network maintenance trolley performs a self-test upon startup. After the self-test is complete, maintenance personnel guide the trolley to the maintenance section. The identification unit 8 scans and identifies the rigid contact network model of that section. The contact wire identification device 713 scans the contact wire condition, and parameters are automatically input into the control unit 9. This interacts with the maintenance database, providing the component configuration parameters for the optimal grinding scheme, such as the grinding path, grinding angle, and grinding pressure. Next, the XY control platform 5 controls the grinding path of the grinding belt grinding device 7, the angle adjustment motor 78 controls the grinding angle of the grinding device, and the electric push cylinder 72, in conjunction with the pressure sensor 74, controls the grinding pressure of the grinding device. The grinding scheme is completed according to the configuration parameters. While executing the grinding scheme, the identification unit 8 simultaneously scans the remaining rigid contact network model, achieving the function of simultaneous grinding and identification. After the grinding process is completed, the contact wire identification device 713 scans the ground contact wire model and inputs the parameters into the control unit 9 to determine whether further grinding is needed. If so, a new grinding plan is provided based on the data exchange. If not, the intelligent rigid contact network maintenance ladder performs a self-check, including checking the remaining power of the power supply 12, the functionality of the identification unit 8, pressure sensor 74, and contact wire identification device 713, and the remaining grinding life of the grinding belt 711.
[0042] After completing the maintenance work on this section of the rigid contact network, the intelligent rigid contact network maintenance ladder performs a self-check. If the working conditions are met, the travel drive motor 13 starts, driving the entire intelligent rigid contact network maintenance ladder along rail 3 to the next grinding section, and then automatically executes the above-mentioned work process. If the working conditions are not met, the intelligent rigid contact network maintenance ladder automatically travels to the inspection station to remind maintenance personnel to carry out inspection.
[0043] Specifically, such as Figure 3 As shown, the grinding assembly also includes a scissor lift platform 712, which is mounted on the ladder truck maintenance platform 4. The XY control platform 5 is located on top of the scissor lift platform 712, and the lifting fork drive motor 7121 in the scissor lift platform 712 is electrically connected to the control unit 9. The scissor lift platform 712 allows for convenient manual replacement and rapid elevation of the belt sander 7.
[0044] As a specific arrangement of the grinding components, two sets of belt grinding devices 7 are symmetrically arranged on the first mounting plate 6, with the two grinding motors 714 in the two sets of belt grinding devices 7 rotating in opposite directions; the grinding belts 711 in the two sets of belt grinding devices 7 have different grit numbers. Each idler wheel mounting shaft 79 is provided with two synchronous pulleys 710. The mounting frame 77 is provided with three idler wheel mounting shafts 79, which are arranged in an inverted triangular shape, with the lowest idler wheel mounting shaft 79 connected to the grinding motor 714. Each set of belt grinding devices 7 is matched with a contact wire identification device 713, which is installed on the top of the support base 75 and is electrically connected to the control unit 9.
[0045] In this embodiment, both the identification unit 8 and the contact line identification device 713 can be 3D laser scanners.
[0046] The belt abrasive grinding device 7 is equipped with belt abrasive grinding. A grinding motor 714 drives a synchronous pulley 710 to rotate, and the abrasive belt 711 moves with the rotation of the synchronous pulley 710, thus achieving the function of grinding the contact line. Different grit sizes of the abrasive belt 711 can simultaneously perform polishing and grinding functions. A total of two grinding components are configured. During operation, the two grinding motors 714 move in opposite directions to balance the impact of friction on the equipment during grinding. An angle adjustment motor 78 drives a rotating shaft 76 to rotate, which in turn drives a mounting bracket 77 and the components on the mounting bracket 77 to rotate, ultimately enabling the abrasive belt 711 to rotate axially, meeting the functional requirement of adjustable angle for the abrasive belt 711.
[0047] The electric pusher cylinder 72 and pressure sensor 74 lift the grinding assembly vertically upwards. The guide rod 73 provides vertical guidance. When the abrasive belt 711 contacts the contact line, the pressure sensor 74 provides feedback on the grinding pressure. The electric pusher cylinder 72 slowly rises until the grinding pressure reaches the set range. During grinding and polishing, the electric pusher cylinder 72 dynamically controls the grinding pressure of the grinding and polishing unit by raising or lowering itself based on the feedback pressure.
[0048] Preferably, but not limited to, a lidar 16 electrically connected to the control unit 9 is provided on the front or rear side of the ladder truck chassis 10, which increases the safety of the equipment.
[0049] An encoder 17, which is electrically connected to the control unit 9, is provided on the shaft connected to the walking drive motor 13. The encoder 17 can record the position of the grinding rigid contact line 2, which is convenient for subsequent management.
[0050] Preferably, but not limited to, the ladder truck maintenance platform 4 is equipped with a protective fence 18, and the protective fence 18 is equipped with a fence gate 19. The protective fence 18 improves the safety of the operation.
[0051] It is worth mentioning that the XY control platform 5, control unit 9, pressure sensor 74, scissor lift platform 712 and other equipment in this utility model are existing technologies, and their structures and working principles will not be described in detail here.
[0052] In summary, this utility model provides an intelligent rigid contact network maintenance ladder vehicle. Through the identification unit 8, it acquires maintenance segment information such as the anchor section and busbar pull-out value during rigid contact network maintenance, effectively solving the problem of continuous grinding that traditional contact wire grinding equipment cannot perform, and improving the maintenance efficiency of rigid contact networks. The control unit 9 integrates the information of the scanned segments and inputs it into the contact wire maintenance database, automatically generating a scanning segment grinding plan. After grinding is completed, the contact wire identification device 713 re-identifies the contact wire model and inputs it into the control unit 9, which then determines whether the maintenance effect meets the standards. By comparing the data in the maintenance database, the contact wire maintenance problems are quantified, effectively solving them. The sanding belt grinding device 7 has adjustable grinding angle, controllable grinding pressure, and adjustable grinding position, realizing intelligent contact wire maintenance. This effectively solves problems such as uneven wear of the contact wire, repairs the contact wire profile, and improves the contact wire lifespan. The setup of the ladder car chassis 10 enables the entire intelligent rigid contact network maintenance ladder car to automatically travel along the rail 3 and, together with various execution units, complete the contact network maintenance tasks, greatly reducing the workload of manual maintenance, effectively solving the risk factors during manual maintenance, and improving the efficiency of contact line maintenance.
[0053] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An intelligent rigid contact wire maintenance ladder truck, characterized in that, The system includes a mobile ladder truck body, a ladder truck maintenance platform is provided on the top of the mobile ladder truck body, and a grinding component is provided on the ladder truck maintenance platform; The grinding assembly includes an XY control platform, on which a first mounting plate is fixedly mounted. At least one set of belt grinding devices is mounted on the first mounting plate. Each set of belt grinding devices includes a second mounting plate mounted on top of the first mounting plate. An electric cylinder and multiple guide rods are disposed between the second and first mounting plates. A pressure sensor is mounted on the piston end of the electric cylinder and is fixedly connected to the lower end face of the second mounting plate. A support seat is vertically mounted on the upper end face of the second mounting plate. A rotating shaft is mounted on the support seat, passing through the support seat. A mounting frame and an angle adjustment motor are respectively connected to both ends of the rotating shaft. At least two idler wheel mounting shafts are mounted on the mounting frame. Each idler wheel mounting shaft has at least one synchronous pulley. One idler wheel mounting shaft is driven by the grinding motor to rotate around its own axis. A grinding belt is disposed between the multiple synchronous pulleys on the two idler wheel mounting shafts. The bottom of the angle adjustment motor is fixedly connected to the upper end face of the second mounting plate. The output shaft of the angle adjustment motor is connected to the rotating shaft, driving the rotating shaft to rotate around its own axis. The ladder truck maintenance platform is also equipped with an identification unit and a control unit that are electrically connected to each other; the identification unit is used to automatically identify the rigid contact wire model and transmit the identified data to the control unit, and the pressure sensor, angle adjustment motor and grinding motor in the grinding assembly are all electrically connected to the control unit.
2. The intelligent rigid contact wire maintenance ladder trolley according to claim 1, characterized in that, The grinding assembly also includes a scissor lift platform, which is installed on the ladder truck maintenance platform. The XY control platform is located on top of the scissor lift platform, and the lifting fork drive motor in the scissor lift platform is electrically connected to the control unit.
3. The intelligent rigid contact wire maintenance ladder trolley according to claim 1, characterized in that, Two sets of the aforementioned belt sanding devices are symmetrically arranged on the first mounting plate. The two sanding motors in the two sets of belt sanding devices rotate in opposite directions. The grit number of the sanding belts in the two sets of belt sanding devices is different.
4. The intelligent rigid contact wire maintenance ladder trolley according to claim 3, characterized in that, Each of the idler wheel mounting shafts is provided with two synchronous pulleys.
5. The intelligent rigid contact wire maintenance ladder trolley according to claim 4, characterized in that, The mounting bracket is equipped with three idler wheel mounting shafts, which are arranged in an inverted triangle shape. The lowest idler wheel mounting shaft is connected to the grinding motor.
6. The intelligent rigid contact wire maintenance ladder trolley according to claim 1, characterized in that, Each of the belt sanding devices is equipped with a contact line identification device, which is installed on the top of the support base and is electrically connected to the control unit.
7. The intelligent rigid contact wire maintenance ladder trolley according to claim 1, characterized in that, The main body of the mobile ladder truck includes a ladder truck chassis and a ladder truck support mounted on the chassis. The ladder truck maintenance platform is located on top of the ladder truck support. The ladder truck chassis includes a power supply, a travel drive motor, and two axles. The two axles are respectively located on the front and rear sides of the mobile ladder truck body, and each axle has a ladder truck wheel adapted to the rail on both sides. The travel drive motor is connected to one of the axles through a reducer, and the power supply provides power to the travel drive motor. The travel drive motor is electrically connected to the control unit.
8. The intelligent rigid contact wire maintenance ladder trolley according to claim 7, characterized in that, Each of the ladder truck chassis is equipped with a lidar electrically connected to the control unit, located on either the front or rear side.
9. The intelligent rigid contact wire maintenance ladder trolley according to claim 7, characterized in that, An encoder electrically connected to the control unit is provided on the shaft connected to the walking drive motor.
10. The intelligent rigid contact wire maintenance ladder trolley according to any one of claims 1 to 9, characterized in that, The ladder truck maintenance platform is equipped with a protective fence, and the protective fence is equipped with a gate.