Treatment device for abnormal abrasion of rigid contact line

Abstract

The invention relates to a rigid contact line abnormal abrasion treatment device which comprises a synchronous lifting platform arranged on the top of a railway track moving carrier, a carbon powder and burr collecting mechanism arranged on the synchronous lifting platform and a double-elasticity adjusting type grinding head assembly arranged on the carbon powder and burr collecting mechanism. The display module, the control module and the operation panel are arranged in a railway track mobile carrier cab; the double-elasticity adjusting type grinding head assembly comprises a mounting base plate and two identical grinding roller mechanisms which are fixedly arranged on the mounting base plate in parallel, a carbon sliding plate device which elastically floats and is parallel to the grinding roller mechanism is arranged on the outer side of each grinding roller mechanism, and the upper surface of each carbon sliding plate device is slightly higher than the upper surface of the corresponding grinding roller mechanism. Continuous and efficient operation can be achieved, and the grinding precision and quality are improved.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, specifically to a device for treating abnormal wear of rigid contact wires. Background Technology

[0002] Rigid contact networks are the primary power supply method in subway tunnel sections. They consist of a rigid contact wire and fixed devices such as busbars. Power is transmitted to trains through friction between the rigid contact wire and the pantograph's sliding plate. Over time, burrs and streaks develop on the rigid contact wire, affecting power supply. Regular grinding and polishing are necessary. Currently, maintenance of rigid contact wires both domestically and internationally relies mainly on manual labor and small semi-automated equipment. Manual grinding: Workers use coarse and fine sandpaper to manually grind along the contact wire. This method is precise and has low material costs, but requires a large workforce (at least six people per work group), resulting in high labor intensity, low efficiency, and safety hazards (such as hand injuries from contact wire burrs and health risks from metal dust). Small hanging-type grinding equipment: This is currently the most common semi-automated solution. This type of equipment typically includes a frame, a traveling mechanism, a grinding mechanism, and a drive mechanism. It is fixed to the busbar via a suspension device and operated by personnel on a ladder truck. Its typical structure is as follows: Suspended walking mechanism: The equipment is clamped on the busbar by four pairs of walking wheels to realize the movement of the equipment on the contact wire; Grinding mechanism: The grinding wheel is driven by a motor, and the contact pressure between the grinding wheel and the contact wire is adjusted by a telescopic motor or spring mechanism.

[0003] Existing rigid contact wire grinding technology suffers from the following main shortcomings: High manual labor intensity and significant safety hazards: Traditional manual grinding requires workers to operate at heights, and the burrs generated by the contact wire can cut their hands. The large amount of metal particles and dust generated during grinding can seriously affect the health of operators. A work group requires at least 6 people (4 to push the ladder truck and 2 to operate the grinding), resulting in high manpower input and difficulty in coordinated operation. Low automation of small equipment, unable to achieve continuous operation: Existing equipment is small in size and weight. Although existing small-scale wire-hanging equipment reduces some labor intensity, it still relies on a ladder truck platform, and the biggest technical bottleneck is its inability to pass through anchor joints. Anchor joints are weak points in the contact wire structure. Existing equipment requires disassembly, transportation, and reinstallation at each anchor joint, leading to low work efficiency and seriously affecting the effective utilization rate during maintenance windows. Unstable grinding quality and inaccurate pressure control: Existing equipment mostly uses fixed pressure grinding or simple mechanical adjustment, which is difficult to adapt to irregular wear of the contact wire. When encountering large protrusions or pits, the grinding wheel is subjected to severe pressure, resulting in uneven grinding and even damage to the normal contact wire surface. While some patents (such as CN114211339A) attempt to improve this problem through spring adjustment, they still rely on operator experience and are difficult to control precisely. Insufficient equipment stability and poor positioning accuracy: In the complex environment of tunnels, the driving mechanism of the existing equipment's walking components lacks stability, easily causing the equipment to shake and deviate from the correct grinding path. Especially in the acceleration section, pantograph vibration causes changes in the contact wire position, and existing equipment lacks adaptive adjustment capabilities, affecting grinding accuracy. Limited functionality and lack of comprehensive processing capabilities: Most existing equipment can only perform basic grinding or polishing functions, lacking integration of auxiliary functions such as abnormal wear detection, chip collection, and real-time monitoring. The market urgently needs a comprehensive processing system that integrates detection, grinding, polishing, and monitoring. Summary of the Invention

[0004] This invention provides a device for treating abnormal wear of rigid contact wires, thereby overcoming the technical deficiencies of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for treating abnormal wear of rigid contact wires, comprising a synchronous lifting platform mounted on top of a railway track moving carrier, a carbon powder and burr collection mechanism mounted on the synchronous lifting platform, a dual-elastic adjustable grinding head assembly mounted on the carbon powder and burr collection mechanism, and a display module, a control module, and an operation panel mounted in the driver's cab of the railway track moving carrier. The dual-elastic adjustable grinding head assembly includes a mounting base plate, two identical grinding roller mechanisms fixedly mounted side-by-side on the mounting base plate, and a grinding roller mechanism for each grinding roller. Each side of the grinding roller mechanism is equipped with a set of elastically floating carbon slide devices parallel to the grinding roller mechanism. A fixing post is installed in the mounting hole on the mounting base. The upper end of the fixing post is connected to an optical axis, and the upper end of the optical axis is connected to a pressure sensor. A spring passes through the optical axis, with its upper end pressing against the pressure sensor and its lower end pressing against the fixing post. An angle adjustment fixing component is connected to the upper end of the pressure sensor. A rotation damping angle adjuster is fixedly connected to the lower part of the carbon slide device. The carbon powder and burr collection mechanism is equipped with a laser sensor. The upper surface of the carbon slide device is slightly higher than the upper surface of the grinding roller mechanism in the natural state of the spring.

[0006] Specifically, the grinding roller mechanism includes a roller body, the surface of which is covered with a flexible grinding material. One end of the roller body is provided with a drive base, and a coupling is provided inside the drive base. The roller body is connected to the output shaft of a reducer through the coupling. A motor is connected to the input shaft of the reducer. The other end of the roller body is provided with a support base, and the roller body is supported by an angular contact bearing inside the support base.

[0007] Specifically, the flexible polishing material is silicon carbide and / or industrial scouring pad.

[0008] Specifically, the synchronous lifting platform includes a support set on top of the railway track mobile carrier, with lifting devices at the four corners of the support. The lifting devices are connected to a servo motor through a steering device, and the top of the lifting device is provided with an installation plane.

[0009] Specifically, the lifting device is a linkage H-type synchronous screw jack.

[0010] Specifically, the toner and burr collection mechanism includes a main frame installed between the mounting base plate and the mounting plane, an inclined bucket-type collection box installed on the upper part of the main frame, the collection box having a sloping shape with an opening area larger than the coverage area of ​​the double grinding rollers, and a material inlet installed on the side of the inclined bucket-type collection box, the material inlet being connected to a vacuum cleaner via a hose.

[0011] Specifically, the vacuum cleaner is connected to a hose via a standardized interface.

[0012] Specifically, the hose is an antistatic, wear-resistant corrugated hose.

[0013] Specifically, the laser sensor is mounted on the main frame.

[0014] Specifically, the control module is an integrated programmable logic controller.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. High degree of automation, significantly reducing labor costs and safety, health, and environmental risks: The equipment is fully automated and can be remotely operated from the cab via wireless network. It transforms the previously labor-intensive and high-risk manual work requiring 6 or more people (ladder pushing, escalator operation, and high-altitude work) into automated work that can be completed by 1-2 people in the cab. This fundamentally eliminates the safety hazards of high-altitude work and manual grinding, and saves significant labor costs. The system effectively collects over 95% of grinding dust (especially conductive carbon powder), greatly improving the working environment in the enclosed space of the tunnel, avoiding the potential risk of dust explosions, and protecting the respiratory health of operators, fully complying with modern industrial safety and environmental standards.

[0017] 2. Excellent mobility for continuous and efficient operation: This invention integrates the equipment onto a track-mounted mobile carrier and employs a roller-type grinding roller and an overall lifting design, completely solving the industry problem that traditional netting equipment cannot cross anchor section joints. The equipment can move continuously with the engineering vehicle, eliminating the need for repeated disassembly and assembly at each anchor section, maximizing the effective utilization of the maintenance window and increasing operational efficiency several times over.

[0018] 3. High dynamic response, dual-stage elastic constant pressure, and extremely high grinding precision and quality: Utilizing a dual-stage pressure regulation system of "carbon slide plate spring guide rail + servo screw lifting platform," combined with high-precision pressure sensor closed-loop control, it provides excellent synchronization and real-time compensation for contact line height changes, maintaining optimal grinding pressure in real-time, dynamically, and precisely. This system adapts to the inherent height errors and fluctuations of the contact line while avoiding damage from excessive pressure or ineffective grinding from insufficient pressure, achieving ultra-fine grinding and significantly extending contact line lifespan. When abnormal contact line misalignment may cause equipment jamming or overload, the laser sensor detects in real-time, triggering an alarm and automatically executing protective actions such as lowering the lifting mechanism to prevent damage to the equipment and contact line. The carbon slide plate contacts the rigid contact line before the grinding roller, avoiding direct "hard contact" between the grinding roller and the contact line, which can easily cause impact and damage to both the equipment and the contact line.

[0019] 4. Stable structure and high reliability: Utilizing a four-linkage synchronous screw lifting platform as its foundation, it boasts sufficient rigidity and smooth movement. The dual grinding roller unit employs a high-rigidity CNC base plate and angular contact bearings for support, ensuring extreme stability and ultra-concentric operation at high speeds of 4500 rpm, resulting in uniform grinding quality. The high concentricity design extends the lifespan of the grinding components.

[0020] 5. High level of integration and intelligence: It integrates multiple functions such as constant pressure grinding, laser anti-collision monitoring, wireless remote control, and parameter setting into one machine. It combines detection, grinding, polishing and monitoring into one, and has over-limit alarm and automatic protection functions. It has a high level of intelligence and is suitable for the complex and harsh industrial environment in tunnels.

[0021] 6. Expanding the scope of automated operations: This integrated collection solution avoids the extensive follow-up work of manually cleaning the tunnel after traditional grinding operations, making the entire grinding process more efficient, cleaner, and more modern. It reflects the comprehensiveness of the equipment design, while preventing carbon powder and metal shavings from entering the precision moving parts of the grinding head (such as bearings, guide rails, and sensors), reducing abnormal wear and failure rate of the equipment, and ensuring the long-term reliability and accuracy of the grinding pressure control system and lifting system. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the dual-elastic adjustable grinding head assembly in this invention;

[0024] Figure 3 This is a schematic diagram showing the relationship between the carbon skateboard device and its auxiliary components in this invention;

[0025] Figure 4 This is a schematic diagram of the grinding roller mechanism in this invention;

[0026] Figure 5 This is a schematic diagram of the synchronous lifting platform in this invention;

[0027] Figure 6 This is a schematic diagram of the structure of the carbon powder and burr collection mechanism in this invention;

[0028] The components include: 1. Synchronous lifting platform; 2. Carbon powder and burr collection mechanism; 3. Dual elastic adjustable grinding head assembly; 4. Mounting base plate; 5. Grinding roller mechanism; 6. Carbon slide plate; 7. Fixed column; 8. Optical axis; 9. Pressure sensor; 10. Angle adjustment fixing component; 11. Rotation damping angle adjuster; 12. Roller body; 13. Flexible grinding material; 14. Drive base; 15. Coupling; 16. Reducer; 17. Motor; 18. Support base; 19. Support; 20. Lifter; 21. Steering device; 22. Servo motor; 23. Mounting plane; 24. Main frame; 25. Material inlet; 26. Inclined bucket collection box. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1 , Figure 2 , Figure 3 The present invention provides the following technical solution: a device for treating abnormal wear of rigid contact wires, comprising a synchronous lifting platform 1 mounted on top of a railway track moving carrier, a carbon powder and burr collection mechanism 2 mounted on the synchronous lifting platform 1, and a double-elastic adjustable grinding head assembly 3 mounted on the carbon powder and burr collection mechanism 2, and further comprising a display module, a control module, and an operation panel mounted in the driver's cab of the railway track moving carrier. The double-elastic adjustable grinding head assembly 3 includes a mounting base plate 4, two identical grinding roller mechanisms 5 fixedly mounted side by side on the mounting base plate, and a grinding roller mechanism 5 on the outer side of each grinding roller mechanism 5. A set of elastically floating carbon slide plate 6 parallel to the grinding roller mechanism 5 is provided. A fixing post 7 is provided in the mounting hole on the mounting base plate 4. The upper end of the fixing post 7 is connected to the optical axis 8. The upper end of the optical axis 8 is connected to the pressure sensor 9. A spring passes through the optical axis 8, with its upper end pressing against the pressure sensor 9 and its lower end pressing against the fixing post 7. An angle adjustment fixing part 10 is connected to the upper end of the pressure sensor 9. A rotation damping angle adjuster 11 is fixedly connected to the lower part of the carbon slide plate 6. The carbon powder and burr collection mechanism 2 is equipped with a laser sensor. The upper surface of the carbon slide plate 6 is slightly higher than the upper surface of the grinding roller mechanism 5 in the natural state of the spring. The device of this invention adopts a modular design. The synchronous lifting platform 1 serves as the base and height adjustment mechanism for the dual-elastic adjustable grinding head assembly 3. The dual-elastic adjustable grinding head assembly 3 is the core module that directly performs the grinding function. During grinding, the carbon slide plate 6 first contacts and "straddles" the rigid contact line. Under the pre-pressure of the spring and the fixing column 7, the carbon slide plate 6 is pressed down until the grinding roller 5 below it contacts the surface of the contact line. The pressure sensor 9 monitors and provides feedback on the contact pressure in real time. The control module is the brain of the entire device, controlling the operation of the entire device in real time. Working process and principle:

[0031] 1. Positioning and Initial Contact: The rail engineering vehicle equipped with this device travels to the work area, the control system is activated, and the lifting platform 1, under the control of the PLC, raises the upper grinding head assembly 3 to a height close to the contact line. Under the action of springs and fixing columns 7, the carbon sliding plates 6 on both sides first make contact with the rigid contact line and adaptively fit together.

[0032] 2. Carbon slide plate 6 contact and pressure sensing and constant pressure control: After the carbon slide plate 6 makes contact, the pressure sensor 9 detects the combined pressure of the carbon slide plate 6 and the grinding roller assembly 5 on the contact line in real time. The PLC compares this pressure signal with the preset optimal grinding pressure value.

[0033] 3. Dual-stage coordinated adjustment: First-stage fine adjustment: The spring and fixed column 7 themselves constitute the first-stage elastic buffer, which can instantly absorb slight up-and-down fluctuations in the contact line. Second-stage fine adjustment: When the pressure deviation exceeds the adjustment range of the spring and fixed column 7, or when a large height matching is required, the PLC immediately controls the servo motor 22 at the bottom to drive the mounting plane 23 to perform precise lifting and lowering movements, dynamically adjusting the height of the entire grinding head 5, so that the working pressure quickly returns to and stabilizes at the set value. This is the "dual elastic pressure adjustment" mechanism.

[0034] 4. Grinding Operation: After the pressure stabilizes, the dual grinding roller unit 5 is started to rotate at high speed, while the engineering vehicle moves forward at a constant low speed. The grinding roller 5 grinds and polishes the burrs and roughness on the surface of the contact line. The integral, lifting design of the roller-type grinding roller allows it to pass smoothly and continuously through the anchor section joint without stopping the equipment for disassembly. Laser reflection sensors on both sides monitor the distance between the contact line and the side of the grinding roller 5 in real time. If the distance is abnormal due to severe twisting of the contact line or other reasons, the PLC will trigger an alarm and immediately command the synchronous lifting platform 1 to descend to prevent the equipment from jamming or damaging the contact line.

[0035] 5. Carbon Powder and Burr Collection: During the high-speed grinding process of the grinding roller 5, fine carbon powder particles and metal burrs generated are directly splashed downwards under the influence of gravity. The inclined bucket-type collection box 26 below effectively collects all the falling debris, preventing it from scattering in all directions. An industrial vacuum cleaner connected to the discharge port 25 on the collection box works continuously, generating a stable negative pressure airflow to continuously and in real time suck away the dust and debris collected in the box and transport it to the dust collection bag or dust collection bin of the vacuum cleaner. The entire process forms a localized, closed-loop dust collection and removal system, achieving "collection upon generation, and removal upon collection".

[0036] Throughout the entire operation, the operator monitors all parameters such as pressure, speed, and alarm status through a display screen in the cab, and can remotely control the equipment's start-up, shutdown, lifting, and pressure setting, achieving a "one-person operation, whole vehicle movement, continuous grinding" work mode.

[0037] Please see Figure 4Specifically, the grinding roller mechanism 5 includes a roller body 12, the surface of which is covered with a flexible grinding material 13. One end of the roller body 12 is provided with a drive base 14, and a coupling 15 is installed inside the drive base 14. The roller body 12 is connected to the output shaft of a reducer 16 via the coupling 15. A motor 17 is connected to the input shaft of the reducer 16. The other end of the roller body 12 is provided with a support base 18, which uses angular contact bearings to support the roller body 12. The grinding roller mechanism 5 is used for the entire process from coarse grinding to fine grinding. The dual-roller design ensures the balance and efficiency of the grinding surface, with a rotation speed of over 4500 rpm and extremely high concentricity. The angular contact bearings ensure high axial and radial rigidity at high speeds. The flexible grinding material 13 can complete the process from coarse to fine grinding in one go according to the wear condition, and the modular design makes consumable replacement quick and easy.

[0038] Specifically, the flexible abrasive material 13 is silicon carbide and / or industrial scouring pad, with silicon carbide used for coarse grinding and scouring pad used for fine grinding.

[0039] Please see Figure 5 Specifically, the synchronous lifting platform 1 includes a support 19 set on the top of the railway track mobile carrier. The support 19 has lifting devices 20 at its four corners. The lifting devices 20 are connected to the servo motor 22 through the steering device 21. The top of the lifting device 20 has an installation plane 23, which serves as the base of the grinding roller mechanism and the height adjustment mechanism, forming a rigid square synchronous lifting platform. The programmable logic controller (PLC) controls the servo motor to drive the entire platform to achieve fast and precise lifting movements.

[0040] Please see Figure 6 Specifically, the toner and burr collection mechanism 2 includes a main frame 24 installed between the mounting base 4 and the mounting plane 23, a sloping bucket-type collection box 26 installed on the upper part of the main frame 24, the collection box 26 being a ramp shape with an opening area larger than the coverage area of ​​the double grinding rollers 5, and a material inlet 25 installed on the side of the sloping bucket-type collection box 26, which is connected to a vacuum cleaner via a hose. The opening area of ​​the collection box 26 is larger than the coverage area of ​​the double grinding rollers 5, ensuring that all vertically falling grinding debris (toner, metal burrs, etc.) can be completely collected. The start and stop of the vacuum cleaner and the start and stop of the grinding motor can be electrically linked and managed by the same PLC system to achieve synchronous operation.

[0041] Specifically, the control module is an integrated programmable logic controller. The entire set of equipment is uniformly controlled by an integrated programmable logic controller (PLC). The control system receives pressure feedback signals from pressure sensors and distance monitoring signals from laser reflection sensors. Through a wireless remote control module, all operating statuses, parameter settings, and alarm information are transmitted to an industrial-grade dustproof and waterproof display screen in the cab, realizing remote human-machine interaction and control.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for treating abnormal wear of a steel contact wire, characterized in that The utility model provides a kind of double-elasticity adjustable polishing head assembly, including synchronous lifting platform (1) being arranged on the top of railway track mobile carrier, carbon powder and burr collection mechanism (2) being arranged on the top of synchronous lifting platform (1), double-elasticity adjustable polishing head assembly (3) being arranged on the top of carbon powder and burr collection mechanism (2), further including display module, control module and operation panel being arranged in the cab of railway track mobile carrier, double-elasticity adjustable polishing head assembly (3) includes installation base plate (4), two sets of identical polishing roller mechanisms (5) being fixedly arranged on installation base plate (4), each polishing roller mechanism (5) outside is arranged with a set of parallel carbon slide plate (6) of elastic floating with polishing roller mechanism (5), fixed column (7) is arranged in the mounting hole on installation base plate (4), the upper end of fixed column (7) is connected with optical shaft (8), the upper end of optical shaft (8) is connected with pressure sensor (9), one spring penetrates optical shaft (8), the upper end is against pressure sensor (9), the lower end is against fixed column (7), the upper end of pressure sensor (9) is connected with angle adjusting fixed part (10), angle adjusting fixed part (10) is fixedly connected with rotating damping angle regulator (11) below carbon slide plate (6), carbon powder and burr collection mechanism (2) are equipped with laser sensor, the upper surface of carbon slide plate (6) is slightly higher than the upper surface of polishing roller mechanism (5) in the natural state of spring.

2. A device for treating abnormal wear of a steel contact wire according to claim 1, characterized in that The polishing roller mechanism (5) includes a roller shaft body (12), the surface of the roller shaft body (12) is wrapped with a flexible polishing material (13), one end of the roller shaft body (12) is provided with a driving base (14), the driving base (14) is provided with a shaft coupling (15) therein, the roller shaft body (12) is connected with an output shaft of a speed reducer (16) through the shaft coupling (15), an input shaft of the speed reducer (16) is connected with a motor (17), the other end of the roller shaft body (12) is provided with a support base (18), the support base (18) internally supports the roller shaft body (12) by using an angular contact bearing.

3. A device for treating abnormal wear of a steel contact wire according to claim 2, characterized in that The flexible polishing material (13) is silicon carbide and / or industrial scouring pad.

4. A device for treating abnormal wear of a steel contact wire according to claim 1, characterized in that The synchronous lifting platform (1) includes a support (19) arranged on the top of the railway track mobile carrier, the support (19) is provided with four lifters (20) at the corners, the lifters (20) are connected with a servo motor (22) through a steering gear (21), and the top of each lifter (20) is provided with a mounting plane (23).

5. A device for treating abnormal wear of a steel contact wire according to claim 4, characterized in that The lifter (20) is a linkage H-shaped synchronous screw lifter.

6. A device for treating abnormal wear of a steel contact wire according to claim 4, characterized in that The carbon powder and burr collection mechanism (2) includes a main frame (24) mounted between the installation base plate (4) and the mounting plane (23), an inclined hopper type collecting box (26) mounted on the upper part of the main frame (24), the inclined hopper type collecting box (26) has a landslide shape and an opening area larger than the coverage range of the double-elasticity adjustable polishing head assembly (3), a material taking port (25) mounted on the side of the inclined hopper type collecting box (26), and the material taking port (25) is connected with a dust collector through a hose.

7. A device for treating abnormal wear of a steel contact wire according to claim 6, characterized in that The dust collector is connected with the hose through a standardized interface.

8. A device for treating abnormal wear of a steel contact wire according to claim 6, characterized in that The hose is an anti-static and wear-resistant corrugated hose.

9. A device for treating abnormal wear of a steel contact wire according to claim 6, characterized in that The laser sensor is mounted on the main frame (24).

10. A device for treating abnormal wear of a steel contact wire according to any one of claims 1 to 9, characterized in that The control module is an integrated programmable logic controller. The control module is an integrated programmable logic controller.

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