CN117697594A - Rigid contact line polisher - Google Patents

Abstract

The application relates to urban rail power supply technical processing field discloses a rigid contact line polisher, and it includes frame, polishing wheel and actuating mechanism, and the frame is installed on the busbar slidingly, and at least one polishing wheel elastic mounting is in the frame, and the polishing wheel is configured as: the grinding wheel is allowed to move up and down relative to the frame and is allowed to move back and forth along the traveling direction of the rigid contact line grinder, the grinding wheel is used for grinding the contact line arranged on the bus bar, the outer peripheral surface of the grinding wheel is propped against the lower surface of the contact line in the working state, and the driving mechanism is in transmission connection with the grinding wheel and is used for driving the grinding wheel to work. The polishing machine has the characteristics of low labor intensity, good safety, capability of improving polishing precision, uniformity, working efficiency and the like.

Description

Rigid contact line polisher

Technical Field

The application relates to the technical treatment field of rail power supply, in particular to a rigid contact wire grinding machine.

Background

The rigid overhead contact net is used as a low-clearance overhead contact net suspension mode, is introduced into Guangzhou subway second-number line operation from abroad for the first time in 2003, is convenient to maintain due to the simple structure, shows good usability in operation for many years, and is widely used in various large cities in recent years.

In actual operation, the rigid contact net often has the phenomena of poor elasticity of local sections, high contact line abrasion rate and uneven abrasion, and simultaneously has the problem of irregular abrasion of the carbon sliding plate of the pantograph of the electric bus. The irregular abrasion of the carbon sliding plate aggravates uneven abrasion of the contact line, worsens the bow net relation and has serious influence on the safe operation of the subway.

Contact line polishing is the most effective bow gateway system treatment measure at present, polishing coverage should be maximized, complete full line polishing in a short time in a concentrated manner, ensure that the contact net can reach the good technical state of no burr, no rough surface and no sharp side edges in the shortest time. Too long polishing period can not repair the contact net timely and comprehensively, the polishing repair speed of the contact line surface is far lower than the damage speed, the contact net can not play a role in optimizing the bow gateway system, and the repeated situation is easy to occur.

At present, two traditional schemes for polishing and polishing contact lines of a rigid contact net exist, namely, manual sand paper polishing is adopted, and nylon polishing wheels are used for manually polishing in combination with electric equipment.

The manual sand paper polishing method adopts coarse sand paper and fine sand paper to polish the contact line along the line direction, and operators use the coarse sand paper to polish the cutting, burr and arc-striking parts of the contact line, and fine sand paper polishes the contact line. The polishing machine has the advantages of fine polishing and low consumable cost; the defect of the polishing machine is that a large amount of manpower is required to be input, the operation intensity is high, the operation efficiency is low, potential safety hazards exist, the operation personnel can be scratched by burrs generated by contact lines, and the physical health of the operation personnel can be seriously damaged by a large amount of metal particles and dust generated in the polishing process.

The method for manually polishing by using the nylon polishing wheel and the electric equipment is characterized in that a hand-held chargeable polishing machine is adopted to replace sand paper for polishing: the polishing speed is high, and the efficiency is improved compared with the polishing speed; the defects are as follows: firstly, the machine is heavy, the height and the strength of hand-held polishing are difficult to control, if the operation is improper, the damage to the surface of a contact line and the personal injury can be caused; secondly, the polishing precision can not be mastered, and the normal contact line is easily damaged carelessly.

In order to solve the problems, chinese patent application (issued publication No. CN 208601227U) discloses a contact line polisher for a rigid contact net, which comprises a frame, a travelling mechanism and a polishing mechanism, wherein the travelling mechanism and the polishing mechanism are respectively arranged on the frame, the polishing mechanism comprises a polishing motor and polishing wheels which are driven to rotate by the polishing motor, the travelling mechanism comprises four pairs of travelling wheels arranged at four corners of the frame, the wheel surfaces of each pair of travelling wheels are opposite to each other and form a clamping part, the polishing wheels are arranged in the middle of the frame, and the axial direction of each polishing wheel is perpendicular to the axial direction of each travelling wheel so that the steering direction of each polishing wheel is perpendicular to the travelling direction of the frame; still install flexible motor in the frame, the telescopic link of flexible motor is vertical to be set up, the motor of polishing is installed on the telescopic link of flexible motor. The patent has the advantages that: design science, reduction manual operation, reduction intensity of labour, security are good, improve precision and efficiency of polishing, but this patent still has some shortcoming: because abominable tunnel environment and the extension of operation cycle, great arch or pit can appear on the surface of contact line, in the scheme of above-mentioned patent, the telescopic link vertical setting of telescopic motor, the motor that polishes for the drive wheel is installed on the telescopic link, make the wheel that polishes can only carry out vertical adjustment, when the wheel that polishes meetting the arch or come out from the pit, the wheel that polishes can receive the extrusion and descend gradually, and the extrusion that receives can increase gradually, cause the wheel that polishes resistance grow in advancing direction, can lead the telescopic link to rock so as to influence structural stability for a long time, and when the resistance grow in advancing direction, the wheel that polishes can hug closely more on the contact line, lead to polishing wheel and carry out excessive polishing in resistance great department, make the contact line inhomogeneous that polishes, influence polishing effect; in addition, the up-and-down movement of the polishing wheel is driven by a telescopic motor, and the telescopic motor is matched with the electric control, so that the structure is complex and the production cost is increased.

In view of the foregoing, there is a need for developing a novel rigid contact wire polisher to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, and providing a rigid contact wire polisher which has small labor intensity, good safety and can improve polishing precision, uniformity and working efficiency.

In order to solve the technical problems, the application adopts the following technical scheme:

a rigid contact line grinding machine comprises a frame, a grinding wheel and a driving mechanism;

the frame is slidably mounted on the busbar;

at least one of the grinding wheels is resiliently mounted on the frame, the grinding wheel being configured to: allowing the grinding wheel to move up and down relative to the frame and allowing the grinding wheel to move back and forth along the traveling direction of the rigid contact line grinder, wherein the grinding wheel is used for grinding a contact line arranged on the bus bar, and the outer peripheral surface of the grinding wheel is propped against the lower surface of the contact line in a working state;

the driving mechanism is in transmission connection with the polishing wheel and is used for driving the polishing wheel to work.

Further, a transmission mechanism is arranged between the driving mechanism and the polishing wheel, the transmission mechanism comprises a transmission part and a shell, the transmission part is used for realizing power transmission between the driving mechanism and the polishing wheel, the polishing wheel is rotatably arranged on the shell, a first end of the shell is hinged relative to the driving mechanism, and a second end of the shell is provided with a connecting part;

An elastic mechanism is arranged between the transmission mechanism and the frame, the elastic mechanism comprises a first elastic piece and a mounting part, the first elastic piece is arranged between the connecting part and the mounting part, and the mounting part and the driving mechanism are relatively and fixedly arranged;

under the action of the elastic force of the first elastic piece, the second end of the machine shell swings upwards to the maximum position around the opposite hinging position of the first end of the machine shell and the driving mechanism, and further the polishing wheel is driven to prop against the lower surface of the contact line.

Further, the elastic mechanism further comprises an adjusting button which is connected to the mounting part in a penetrating and threaded mode in an up-and-down adjustable mode, a first end of the first elastic piece is connected with the connecting part, a second end of the first elastic piece is connected with the first end of the adjusting button, and a button cap is arranged at the second end of the adjusting button;

the distance between the connecting part and the mounting part is changed by rotating the button cap, so that the second end of the shell is driven to swing around the output shaft of the driving mechanism, and the distance between the grinding wheel and the contact line is adjusted.

Further, the first end of the casing is hinged with the output shaft of the driving mechanism and enables the casing to swing around the output shaft of the driving mechanism;

The transmission part comprises a first gear and a second gear which are meshed with each other or in transmission connection, the first gear and the second gear are rotatably arranged in the shell, the first gear is coaxially connected with an output shaft of the driving mechanism, and the second gear is coaxially connected with the grinding wheel;

or the transmission piece comprises a first synchronous belt pulley, a second synchronous belt pulley and a synchronous belt, wherein the first synchronous belt pulley and the second synchronous belt pulley are in transmission connection through the synchronous belt, the first synchronous belt pulley and the second synchronous belt pulley are rotatably arranged in the shell, the first synchronous belt pulley is coaxially connected with an output shaft of the driving mechanism, and the second synchronous belt pulley is coaxially connected with the grinding wheel.

Further, the polishing wheel is locked on the second gear or the second synchronous pulley through a bolt, a screwing part is arranged at the end part of the bolt, which is arranged outside, a handheld part is arranged on the second gear or the second synchronous pulley, the handheld part is arranged outside the shell, and the disassembly and assembly between the polishing wheel and the second gear or the second synchronous pulley are realized by fixing the handheld part and rotating the screwing part;

Or the grinding wheel is locked on the second gear or the second synchronous pulley through an elastic chuck.

Further, the driving mechanism and the mounting part are relatively and fixedly arranged on the frame, and when the grinding wheel works, the outer peripheral surface of the grinding wheel is propped against the lower surface of the contact line under the elastic action of the first elastic piece;

alternatively, a floating plate is provided on the frame, the floating plate is elastically mounted on the frame, and the floating plate is configured to: allowing the floating plate to move up and down relative to the frame and allowing the floating plate to move back and forth along the direction of travel of the rigid contact wire repairing machine; the driving mechanism and the mounting part are relatively and fixedly arranged on the floating plate, and when the grinding wheel works, under the action of the common elastic force of the floating plate and the first elastic piece, the outer peripheral surface of the grinding wheel is propped against the lower surface of the contact line.

Further, be provided with the floating plate in the frame, floating plate is upper and lower ground elastic mounting is in the frame, grinding wheel with actuating mechanism is fixed relatively and is set up on the floating plate, during operation, under the elasticity effect of floating plate, the periphery surface of grinding wheel is propped up the lower surface of contact line.

Further, a retraction mechanism is provided between the floating plate and the frame, the retraction mechanism being configured to drive the floating plate to float up and down between a first position and a second position by control of the retraction mechanism, and the retraction mechanism being operable to drive the floating plate to move down from the first position to the second position and to be fixed in the second position; the first position is the maximum position of the floating plate when the floating plate is upward, and the second position is the maximum position of the floating plate when the floating plate is downward.

Further, the rigid contact wire polisher further comprises a position sensor and a controller, wherein the position sensor and the driving mechanism are electrically connected with the controller;

the position sensor is used for detecting the distance between the axis of the grinding wheel and the lower surface of the contact line and feeding back detection information to the controller;

the controller controls the opening and closing of the driving mechanism according to the detection information fed back by the position sensor, and further controls the rotation or the stopping of the polishing wheel.

Further, the rigid contact wire sander further comprises a speed sensor and a controller, wherein the speed sensor and the driving mechanism are electrically connected with the controller;

The speed sensor is used for detecting the travelling speed of the rigid contact wire polisher and feeding back detection information to the controller;

the controller controls the speed of the driving mechanism according to the detection information fed back by the speed sensor, so as to control the rotation speed of the polishing wheel.

Compared with the prior art, the beneficial effects of this application are:

1. the grinding wheel not only can be moved up and down but also can be moved back and forth along the advancing direction of the rigid contact line grinding machine, when the grinding wheel works, under the condition that larger bulges or pits exist on the surface of the contact line, the grinding wheel can remove some resistance brought by the bulges or the pits, excessive grinding can be avoided, and the contact line grinding is more uniform.

2. The technical scheme of this application has replaced manual hand-held abrasive paper or the mode of polishing of instrument, and the security is high to very big reduction intensity of labour, improved work efficiency simultaneously.

3. Under the action of elastic force, the grinding wheel can be tightly propped against the contact line during working, even if the grinding wheel is slightly worn, the grinding wheel can work normally, and the grinding wheel is more uniform during working.

4. Through adopting the design of handheld portion and the portion of twisting or adopting the mounting means of collet, can realize polishing wheel's quick assembly disassembly, convenient to use.

5. When the grinding wheels are multiple, the design enables the grinding wheels to share one driving mechanism, so that the synchronism and the compactness of the structure of the grinding wheels can be ensured, and the production cost can be reduced.

6. Through the design has position sensor, can detect the wearing and tearing degree of grinding wheel to accessible controller realizes automatic shutdown, in order to be convenient for the change of grinding wheel.

7. Through the design has speed sensor, can detect the speed of marcing of rigid contact line polisher to realize through the controller that the rotational speed of grinding wheel carries out real-time matching with the speed of marcing of rigid contact line polisher, make the grinding wheel can grind more evenly when the during operation, and can avoid excessively wearing and tearing the normal workshop section of contact line.

8. The polishing device is also provided with a floating plate, and the driving mechanism, the transmission mechanism and the polishing wheel are arranged on the floating plate, so that the outer peripheral surface of the polishing wheel can be always propped against the lower surface of the contact line under the combined elastic action of the first elastic piece and the floating plate during working; the floating plate is also provided with a guide mechanism, so that the floating plate floats up and down more stably, and further the polishing wheel works more stably; in addition, the shrinkage mechanism is designed for the floating plate, so that the floating plate can be fixed after being moved downwards to a certain position, and the floating plate can be released to be moved upwards to a corresponding position. The installation that such structural design helped the rigid contact line polisher, owing to receive the effect of elasticity, the peripheral surface of polishing wheel can jack up at the lower surface of contact line during the assembly, the assembly between the inconvenient rigid contact line polisher and the busbar, through controlling the shrink mechanism, can move down together the floating plate and the polishing wheel on it for the contact line on polishing wheel and the busbar does not contact, has improved assembly efficiency greatly, control the shrink mechanism after the assembly and released the floating plate and the polishing wheel on it, the peripheral surface of polishing wheel can jack up the lower surface at the contact line, in order to work.

Drawings

In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the application and are not therefore to be considered to be limiting of its scope, the application will be described and explained with additional specificity and detail through the use of the accompanying drawings.

Fig. 1 is a schematic perspective view of a rigid contact wire sander according to the present application;

FIG. 2 is a schematic view of the connection between the grinding wheel and the drive mechanism of the present application;

FIG. 3 is a schematic view of the internal structure of the drive connection between the grinding wheel and the drive mechanism of the present application;

FIG. 4 is a schematic view of the rigid contact wire sander mounted on a busbar;

fig. 5 is a schematic view of a connection structure between a floating plate and a frame in the present application.

The reference numerals are as follows:

1-a frame, 101-a supporting plate and 102-a connecting plate;

2-travelling mechanism, 201-travelling wheel, 202-positioning wheel;

3-grinding mechanism, 301-grinding wheel, 302-driving mechanism, 303-driving mechanism, 3031-driving member, 3032-casing, 304-output shaft, 305-connecting portion, 306-first elastic member, 307-mounting portion, 308-screwing portion, 309-hand-holding portion;

4-floating mechanism, 401-floating plate, 402-connecting block, 403-second elastic piece, 404-sliding block, 405-sliding rail, 406-optical axis, 407-handle, 408-rotating shaft, 409-cam, 4010-locking seat;

5-a speed sensor;

6-bus bar.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. However, it will be apparent to one skilled in the art that embodiments of the present application may be practiced without one or more of these details. In other instances, some features that are well known in the art have not been described in order to avoid obscuring the embodiments of the present application.

In order to provide a thorough understanding of the embodiments of the present application, a detailed structure will be presented in the following description. It will be apparent that embodiments of the present application may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present application are described in detail below, however, the present application may have other embodiments in addition to these detailed descriptions.

In the description of the present application, the term "a and/or B" means all possible combinations of a and B, such as a alone, B alone or a and B, the term "at least one a or B" or "at least one of a and B" has a meaning similar to "a and/or B" and may include a alone, B alone or a and B; the singular forms "a", "an" and "the" include plural referents; the terms "inboard," "outboard," "longitudinal," "transverse," "upper," "lower," "top," "bottom," and the like are used in the sense of orientation or positional relationship shown based on the drawings, and are merely for convenience of description of the present application and do not require that the present application must be constructed and operated in a particular orientation and therefore should not be construed as limiting the present application; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Embodiments of the present application are described in further detail below with reference to the accompanying drawings:

example 1

As shown in fig. 1 to 5, the present embodiment provides a rigid contact wire polisher including a frame 1, a polishing wheel 301 and a drive mechanism 302.

In this embodiment, as shown in fig. 1 and 4, the rack 1 is slidably mounted on the busbar 6, and the rack 1 is formed by two long plates and a plurality of short rods, wherein the two long plates are oppositely arranged, and the plurality of short rods are sequentially distributed between the two long plates and fix the two long plates together so as to form a stable rack body. The frame 1 is mounted on the busbar 6 by the travelling mechanism 2 and the frame 1 can slide on the busbar 6 by the travelling mechanism 2. The travelling mechanism 2 mainly comprises travelling wheels 201 hooked on shoulders on two sides of the busbar 6 and positioning wheels 202 propped in grooves on two sides of the lower part of the busbar 6, and the rack 1 can be slidably arranged on the busbar 6 through mutual clamping of the travelling wheels 201 and the positioning wheels 202; in order to ensure the running stability of the rigid contact wire polisher, two sets of running mechanisms 2 are designed, and the two sets of running mechanisms 2 are arranged at two ends of the running direction of the frame 1. When in operation, external driving force is required to pull the frame 1, and the frame 1 slides and moves along the busbar 6 through the travelling mechanism 2; of course, a set of power device can be integrated on the frame 1, and the power device can drive the rigid contact wire polisher to move, so as to realize the autonomous movement of the rigid contact wire polisher.

In this embodiment, the grinding wheel 301 is in transmission connection with the driving mechanism 302, and the driving mechanism 302 drives the grinding wheel 301 to perform grinding work, the grinding wheel 301 is used for grinding a contact line arranged on the busbar 6, the grinding wheel 301 is elastically mounted on the frame 1 in a manner of being movable up and down and front and back, and under the action of elastic force, the peripheral surface of the grinding wheel 301 can be always propped against the lower surface of the contact line during working, so that the grinding wheel 301 can always have certain pretightening force to be attached to the lower surface of the contact line for grinding work, and grinding precision can be improved; in addition, since the grinding wheel 301 can move up and down and also move back and forth along the travelling direction of the rigid contact line grinder, when the contact line grinder works, under the condition that larger bulges or pits exist on the surface of the contact line, the grinding wheel 301 can remove some resistance caused by the bulges or the pits, excessive grinding can be avoided, and the contact line grinding is more uniform. The drive mechanism 302 is preferably a motor that may be powered by a battery housed in the housing 1 or by an external power source.

The specific mounting structure between grinding wheel 301 and drive mechanism 302 is as follows:

as shown in fig. 2 and 3, a transmission mechanism 303 is disposed between the grinding wheel 301 and the driving mechanism 302, the grinding wheel 301, the driving mechanism 302 and the transmission mechanism 303 form a grinding mechanism 3, the transmission mechanism 303 includes a transmission member 3031 and a housing 3032, the transmission member 3031 is installed in the housing 3032 and is used for realizing power transmission between the driving mechanism 302 and the grinding wheel 301, the grinding wheel 301 is installed on the housing 3032 through the transmission member 3031, a first end of the housing 3032 is hinged with an output shaft 304 of the driving mechanism 302 and enables the housing 3032 to swing around the output shaft 304 of the driving mechanism 302, and the hinging manner may be that: a bearing is provided between a first end of the housing 3032 and the output shaft 304 of the drive mechanism 302, and a second end of the housing 3032 is provided with a connection portion 305.

An elastic mechanism is arranged between the transmission mechanism 303 and the frame 1, the elastic mechanism comprises a first elastic member 306 and a mounting portion 307, the first elastic member 306 comprises one or more of a spring or a shrapnel or a rubber member with elastic deformation, the first elastic member 306 is preferably a spring, the first elastic member 306 is arranged between the connecting portion 305 and the mounting portion 307, and the mounting portion 307 is fixedly arranged opposite to the driving mechanism 302; under the elastic force of the first elastic member 306, the second end of the housing 3032 can swing upwards around the output shaft 304 of the driving mechanism 302 to a maximum position, so as to drive the grinding wheel 301 to abut against the lower surface of the contact line. Further, the elastic mechanism further comprises an adjusting knob which is connected to the mounting portion 307 through a threaded connection in an up-down adjustable manner, a first end of the first elastic member 306 is connected to the connecting portion 305, a second end of the first elastic member 306 is connected to the first end of the adjusting knob, and a knob cap is arranged at the second end of the adjusting knob; the distance between the connecting part 305 and the mounting part 307 is changed by rotating the button cap, so that the second end of the casing 3032 can be driven to swing around the output shaft 304 of the driving mechanism 302, the distance between the grinding wheel 301 and the contact line can be further adjusted, and the tightness adjustment of the pretightening force of the grinding wheel 301 on the contact line can be realized.

The specific structure of the transmission member 3031 is as follows:

the transmission member 3031 may adopt a gear engagement structure, specifically, the transmission member 3031 includes a first gear and a second gear which are engaged with each other or in transmission connection, as shown in fig. 3, and are in transmission connection with each other through an intermediate gear, the first gear, the second gear and the intermediate gear are rotatably installed in the housing 3032, the first gear is coaxially connected with the output shaft 304 of the driving mechanism 302, the second gear is coaxially connected with the grinding wheel 301, the diameters of the first gear, the intermediate gear and the second gear become larger in sequence, so as to form a speed reducing mechanism, and the power output by the driving mechanism 302 can achieve the effects of reducing speed and increasing torque after reaching the grinding wheel 301.

The transmission part 3031 may also adopt a structure form of a synchronous pulley and a synchronous belt, specifically, the transmission part 3031 includes a first synchronous pulley, a second synchronous pulley and a synchronous belt, the first synchronous pulley and the second synchronous pulley are in transmission connection through the synchronous belt, the first synchronous pulley and the second synchronous pulley are both rotatably installed in the casing 3032, the first synchronous pulley is coaxially connected with the output shaft 304 of the driving mechanism 302, and the second synchronous pulley is coaxially connected with the grinding wheel 301; in order to ensure the tensioning force and the transmission effect of the synchronous belt, a tensioning wheel can also be provided, which acts on the synchronous belt and is arranged on the housing 3032 in an adjustable manner.

The transmission member 3031 is not limited to the two configurations described above, but may be other configurations that allow the grinding wheel 301 to float up and down and that allow uninterrupted power transmission between the drive mechanism 302 and the grinding wheel 301.

The grinding wheel 301 is mounted as follows:

as shown in fig. 2, the grinding wheel 301 is locked on the second gear or the second synchronous pulley through a bolt, a screwing part 308 is arranged at the end part of the bolt, which is arranged outside, a handheld part 309 is arranged on the second gear or the second synchronous pulley, the handheld part 309 is arranged outside the casing 3032, the end part of the bolt, which is arranged inside, passes through the central hole of the grinding wheel 301 and is connected with a threaded hole in the middle of the second gear or the second synchronous pulley, and the grinding wheel 301 and the second gear or the second synchronous pulley are coaxially arranged; during installation, the hand-held part 309 is fixed firstly, then the screwing part 308 is rotated, the grinding wheel 301 is pressed on the second gear or the second synchronous pulley by the screwing part 308, during disassembly, the grinding wheel 301 can be disassembled from the second gear or the second synchronous pulley by fixing the hand-held part 309 firstly and then reversely rotating the screwing part 308, and the disassembly and assembly between the grinding wheel 301 and the second gear or the second synchronous pulley can be conveniently realized through the operation.

The installation method of the grinding wheel 301 is not limited to the above, and may be locked to the second gear or the second timing pulley by the elastic chuck.

The number and distribution of grinding wheels 301 are as follows:

the grinding wheel 301 is designed with at least one, preferably, as shown in fig. 1 and 2, the grinding wheel 301 is designed with two grinding wheels, and the two grinding wheels can be two rough grinding wheels or two fine grinding wheels (i.e. polishing wheels) or a combination of the rough grinding wheels and the fine grinding wheels, preferably, the two grinding wheels are one rough grinding wheel and one fine grinding wheel, and the fine grinding (polishing) operation is performed after the rough grinding wheels are operated; the two grinding wheels 301 may be respectively provided with a set of transmission mechanism 303 and a set of driving mechanism 302, but in order to ensure the synchronism of the two grinding wheels 301, the compactness of the structure and reduce the production cost, the two grinding wheels 301 respectively share the set of driving mechanism 302 through the set of transmission mechanism 303, and the specific structural design may be: the housings 3032 of the two sets of transmission mechanisms 303 are respectively mounted on the output shaft 304 of the driving mechanism 302 in a staggered manner through a bearing, each housing 3032 is respectively provided with a set of elastic mechanism to realize the function of floating up and down, and the transmission members 3031 of the two sets of transmission mechanisms 303 share a first gear or a first synchronous pulley.

When a design of a plurality of grinding wheels 301 is employed, the plurality of grinding wheels 301 may be disposed in a distributed manner in the traveling direction of the rigid contact wire grinder.

In this embodiment, the rigid contact wire sander further comprises a position sensor and a controller, both of which are electrically connected to the drive mechanism 302; the position sensor is used for detecting the distance between the axis of the grinding wheel 301 and the lower surface of the contact line and feeding back detection information to the controller; the controller controls the opening and closing of the driving mechanism 302 according to the detection information fed back by the position sensor, so as to control the rotation or the stopping of the grinding wheel 301. Because the grinding wheel 301 is always pressed against the contact line under the action of elastic force, the position sensor actually detects the abrasion degree of the grinding wheel 301, when the grinding wheel 301 works for a long time, and the abrasion is overlarge, the distance value detected by the position sensor becomes smaller, and when the detected distance value is smaller than the preset distance set value in the controller, the controller controls the corresponding driving mechanism 302 to stop, and causes the grinding wheel 301 to stop so as to remind the replacement of the grinding wheel 301; when the detected distance value is not less than the distance set point preset in the controller, the controller allows the drive mechanism 302 to be activated and enables the grinding wheel 301 to operate in normal rotation.

In this embodiment, as shown in fig. 1, the rigid contact wire polisher further includes a speed sensor 5 and a controller, both the speed sensor 5 and the drive mechanism 302 being electrically connected to the controller; the speed sensor 5 is used for detecting the travelling speed of the rigid contact wire polisher and feeding back detection information to the controller; the controller controls the speed of the driving mechanism 302 based on the detection information fed back from the speed sensor 5, and further controls the rotational speed (operating rotational speed) of the grinding wheel 301. When the polishing device is used, the rigid contact wire polishing machine can walk in a manual or external equipment traction mode, and the travelling speed of the rigid contact wire polishing machine is not uniform, so the travelling speed of the rigid contact wire polishing machine is acquired in real time by arranging the speed sensor 5, the rotating speed of the polishing wheel 301 is controlled by the controller to be matched with the travelling speed of the rigid contact wire polishing machine in real time, generally, the two speeds can be set to be in a proportional relation, and the polishing wheel 301 can be polished more uniformly during working by the design, so that the normal section of the contact wire can be avoided from being excessively worn.

In this embodiment, the driving mechanism 302 and the mounting portion 307 are relatively fixedly disposed on the frame 1, and in operation, the outer peripheral surface of the grinding wheel 301 abuts against the lower surface of the contact line under the elastic force of the first elastic member 306.

The technical effects of this embodiment are:

1. the grinding wheel 301 can move up and down and can also move back and forth along the advancing direction of the rigid contact line grinding machine, when the grinding wheel 301 works, under the condition that larger bulges or pits exist on the surface of the contact line, the grinding wheel 301 can remove some resistance caused by the bulges or the pits, excessive grinding can be avoided, and the contact line grinding is more uniform.

2. The embodiment replaces the manual hand-held sand paper or the polishing mode of the tool, has high safety, greatly reduces labor intensity and improves working efficiency.

3. Under the action of elastic force, the polishing wheel 301 can be tightly propped against the contact line during working, even if the polishing wheel 301 is slightly worn, the polishing wheel 301 can work normally, and the polishing wheel 301 can work more uniformly.

4. By adopting the design of the hand-held part 309 and the screwing part 308 or adopting the mounting mode of the elastic chuck, the grinding wheel 301 can be quickly disassembled and assembled, and the use is convenient.

5. When the number of grinding wheels 301 is plural, the design makes the plurality of grinding wheels 301 share one driving mechanism 302, which can ensure the synchronism and the compactness of the structure of the plurality of grinding wheels 301 and reduce the production cost.

6. By designing the position sensor, the degree of wear of grinding wheel 301 can be detected, and automatic shutdown can be achieved by the controller, so that the grinding wheel 301 can be replaced.

7. By designing the speed sensor 5, the travelling speed of the rigid contact wire polisher can be detected, and real-time matching of the rotation speed of the polishing wheel 301 and the travelling speed of the rigid contact wire polisher can be realized through the controller, so that the polishing wheel 301 can polish more uniformly during working, and the normal section of the contact wire can be prevented from being excessively worn.

Example two

This embodiment is a further improvement of the first embodiment, and the difference between this embodiment and the first embodiment is that: in the first embodiment, the driving mechanism 302 and the mounting portion 307 are relatively fixedly disposed on the frame 1, and in operation, under the elastic force of the first elastic member 306, the outer peripheral surface of the grinding wheel 301 abuts against the lower surface of the contact line. In this embodiment, the floating mechanism 4 is disposed on the frame 1, the floating mechanism 4 mainly includes a floating plate 401 and related components for floating the floating plate 401, the floating plate 401 is elastically mounted on the frame 1 in a vertically floating manner, the driving mechanism 302 and the mounting portion 307 are relatively fixedly disposed on the floating plate 401, and in operation, under the action of the elastic force of the floating plate 401 and the first elastic member 306 together, the outer peripheral surface of the grinding wheel 301 is propped against the lower surface of the contact line.

In the present embodiment, as shown in fig. 1 and 5, the floating plate 401 is a plate like an elongated shape, and the floating plate 401 is disposed longitudinally and along the traveling direction of the rigid contact line polisher.

The floating plate 401 floats as follows:

as shown in fig. 1 and 5, a second elastic member 403 and a guide mechanism are provided between the floating plate 401 and the frame 1. The second elastic member 403 includes, but is not limited to, one or more of a spring or a leaf spring or a rubber member having elastic deformation, and the second elastic member 403 is used to achieve elastic connection of the floating plate 401 and the frame 1. The guide mechanism is used for ensuring that the floating plate 401 can float up and down relative to the frame 1. In order to facilitate the connection between the floating plate 401 and the frame 1, a connection block 402 is respectively disposed at two ends of the floating plate 401, a support plate 101 and a connection plate 102 are respectively disposed at two ends of the frame 1, the two connection blocks 402 are disposed opposite to the two connection plates 102 up and down, and the two connection blocks 402 are disposed opposite to the two support plates 101 left and right, so as to facilitate the installation of the second elastic member 403 and the guiding mechanism.

The second elastic member 403 is mounted as follows:

as shown in fig. 1 and 5, the second elastic members 403 are preferably springs, the number of the second elastic members 403 is four, and the four second elastic members 403 are longitudinally and uniformly arranged between the two connection blocks 402 and the two connection plates 102, and the second elastic members 403 provide elastic force for floating the floating plate 401 up and down.

The specific structure of the guide mechanism is as follows:

the guide mechanism can adopt a sliding structure mode of a sliding block 404 and a sliding rail 405, specifically, the guide mechanism comprises the sliding block 404 and the sliding rail 405, the sliding block 404 is arranged on the floating plate 401 through the connecting block 402, the sliding rail 405 is arranged on the supporting plate 101 of the frame 1, the sliding block 404 is arranged in the sliding rail 405, and the sliding block 404 moves up and down along the sliding rail 405; alternatively, the sliding block 404 is mounted on the supporting plate 101 of the frame 1, the sliding rail 405 is disposed on the floating plate 401 through the connecting block 402, the sliding block 404 is disposed in the sliding rail 405, and the sliding rail 405 moves up and down under the restriction of the sliding block 404. The sliding structures of the sliding blocks 404 and the sliding rails 405 are two sets, and the sliding structures of the two sets of sliding blocks 404 and the sliding rails 405 are respectively and oppositely arranged at two ends of the floating plate 401, and the sliding fit of the sliding blocks 404 and the sliding rails 405 can provide guiding function for the up-and-down floating of the floating plate 401.

The guide mechanism can also adopt a sliding structure mode of an optical axis 406 and a guide hole, specifically, the guide mechanism comprises the optical axis 406 and the guide hole, the optical axis 406 is arranged on the floating plate 401 through the connecting block 402, the guide hole is arranged on the connecting plate 102 of the frame 1, the optical axis 406 is inserted in the guide hole, and the optical axis 406 moves up and down along the guide hole; alternatively, the optical axis 406 is mounted on the connection plate 102 of the frame 1, the guide hole is provided on the connection block 402 connected to the floating plate 401, the optical axis 406 is inserted in the guide hole, and the guide hole moves up and down under the restriction of the optical axis 406. The sliding structures of the optical axes 406 and the guide holes are four, and the sliding structures of the four optical axes 406 and the guide holes are uniformly distributed between the two connecting blocks 402 and the two connecting plates 102, so that a guiding effect can be provided for the up-and-down floating of the floating plate 401 through the sliding fit of the optical axes 406 and the guide holes. In addition, the sliding structure of the four optical axes 406 and the guiding holes may be matched with the four second elastic members 403 in a one-to-one correspondence manner, that is, each second elastic member 403 may be respectively sleeved on the corresponding optical axis 406, and two ends of each second elastic member 403 are respectively disposed between the corresponding connection block 402 and the connection plate 102.

The guide mechanism is not limited to the two structures described above, and may be used together or in combination, or may be other structures capable of guiding the floating plate 401 to float up and down.

In the present embodiment, as shown in fig. 1 and 5, a contraction mechanism is provided between the floating plate 401 and the frame 1, the contraction mechanism being configured to: the floating plate 401 is driven to float up and down between the first position and the second position by control of the retracting mechanism, and the retracting mechanism can be used for driving the floating plate 401 to move down from the first position to the second position and be fixed at the second position; the first position is the maximum position of the floating plate 401 when the floating plate 401 is up, and the second position is the maximum position of the floating plate 401 when the floating plate is down.

The specific structure of the shrinkage mechanism is as follows:

as shown in fig. 1 and 5, the retracting mechanism includes a handle 407, a rotating shaft 408, and a cam 409, the handle 407 is provided at an end of the rotating shaft 408, the rotating shaft 408 is rotatably mounted on the frame 1, the cam 409 is provided on the rotating shaft 408, a first plane is provided on an outer peripheral surface of the cam 409, a through hole is provided on the floating plate 401, a second plane is provided at a bottom of an inner side surface of the through hole, and the cam 409 is placed in the through hole; the rotation of the shaft 408 is driven by the rotation of the handle 407, and the cam 409 is driven to rotate in the through hole, so that the floating plate 401 moves down until the first plane of the cam 409 contacts and is attached to the second plane of the through hole, at this time, the floating plate 401 moves down to the second position, and under the action of the upward elastic force of the floating plate 401, the floating plate 401 is fixed at the second position. The structural design for fixing the floating plate 401 in the second position is not limited to the above, but the floating plate 401 may be fixed in the second position by fixing the handle 407 when the floating plate 401 is in the second position.

In this embodiment, as shown in fig. 1 and 5, the retracting mechanism further includes a handle 407 locking mechanism, the handle 407 locking mechanism being configured to: the handle 407 locking mechanism at least enables the handle 407 to be locked on the frame 1 when rotating to a third position, when the handle 407 is placed in the third position, the rotating shaft 408 drives the cam 409 to rotate in the through hole to enable the cam 409 not to contact with the through hole, and the floating plate 401 moves upwards to the maximum position under the action of elastic force so that the floating plate 401 is in the first position; when the handle 407 is placed in a fourth position different from the third position, the rotation shaft 408 drives the cam 409 to rotate in the through hole so that the first plane of the cam 409 contacts and fits with the second plane of the through hole, and the floating plate 401 can be moved down to the second position and fixed in the second position under the mutual cooperation of the cam 409 and the through hole on the floating plate 401, at this time, the handle 407 does not need to be locked, but in order to improve the stability of the structure, the handle 407 can be locked by using the handle 407 locking mechanism when the handle 407 is placed in the fourth position.

The specific structure of the handle 407 locking mechanism is as follows:

as shown in fig. 1 and 5, the handle 407 locking mechanism may be: the handle 407 locking mechanism comprises a locking seat 4010 with a bayonet and a first striker. The spring is a load device consisting of a shell, a spring, a ball or a column body, and the specific structure of the spring is not repeated because the spring belongs to the existing structure. The locking seat 4010 is arranged on the frame 1, and at least one first bump ball is arranged at the opening of the bayonet of the locking seat 4010. The handle 407 is connected with the end of the rotating shaft 408 in a swinging way through the hinge shaft, when the handle 407 rotates to the third position, the handle 407 swings around the hinge shaft into the bayonet of the locking seat 4010 and the handle 407 is locked in the bayonet by the first collision bead, so that the handle 407 and the frame 1 are locked relatively, the locking seat 4010 is mainly used for accommodating and locking the handle 407, the handle 407 is prevented from swinging back and forth due to gravity and other factors during working, normal working is influenced, and when the handle 407 is needed to be used, the handle 407 can be taken out from the bayonet by overcoming the elasticity of the first collision bead with little force, and the use is convenient.

The handle 407 locking mechanism may also be: the handle 407 locking mechanism comprises a second latch and at least two positioning grooves. The second spring bead is arranged on the handle 407, the positioning groove is arranged on the frame 1, and the second spring bead can be switched and put in among the positioning grooves, so that the handle 407 can be switched and locked on the frame 1 between different positions; alternatively, a second latch is provided on the housing 1 and a detent is provided on the handle 407, the second latch being switchable between a plurality of detents to enable the handle 407 to be switched between different positions and locked to the housing 1.

The locking mechanism of the handle 407 is not limited to the above-described structure, but may be other structures that can realize that the handle 407 is locked after being rotated to the corresponding position.

Because the size of the floating plate 401 is long, in order to ensure the downward movement effect of the floating plate 401 driven by the shrinkage mechanism and the convenience of operation, two shrinkage mechanisms are designed in the embodiment and are relatively distributed at two ends of the floating plate 401.

The technical effects of this embodiment are:

the embodiment is designed with a floating plate 401, and a driving mechanism 302, a transmission mechanism 303 and a polishing wheel 301 are arranged on the floating plate 401, so that the outer peripheral surface of the polishing wheel 301 can always prop against the lower surface of a contact line under the action of the common elastic force of a first elastic piece 306 and the floating plate 401 during working; the floating plate 401 is also provided with a guide mechanism, so that the floating plate 401 floats up and down more stably, and the polishing wheel 301 can work more stably; in addition, a contraction mechanism is designed for the floating plate 401, so that the floating plate 401 can be fixed after being moved down to a certain position, and the floating plate 401 can be released to be moved up to a corresponding position. The installation of the rigid contact line polisher is facilitated, due to the fact that the elastic force is applied, the outer peripheral surface of the polishing wheel 301 can be tightly propped against the lower surface of the contact line during assembly, assembly between the rigid contact line polisher and the bus bar 6 is inconvenient, the floating plate 401 and the polishing wheel 301 on the floating plate can be moved downwards together through the operation and control shrinkage mechanism, the contact line between the polishing wheel 301 and the bus bar 6 is not contacted, assembly difficulty is reduced, assembly efficiency is improved, the operation and control shrinkage mechanism after assembly releases the floating plate 401 and the polishing wheel 301 on the floating plate, and the outer peripheral surface of the polishing wheel 301 can be propped against the lower surface of the contact line, so that work is facilitated.

Example III

This embodiment is a further improvement of the first embodiment, and the difference between this embodiment and the first embodiment is that: in the first embodiment, the grinding wheel 301 is capable of floating up and down relative to the driving mechanism 302 by the transmission mechanism 303, and the outer peripheral surface of the grinding wheel 301 is abutted against the lower surface of the contact line under the elastic force of the first elastic member 306. In this embodiment, a floating plate 401 is disposed on the frame 1, the floating plate 401 is elastically mounted on the frame 1 in a manner of being movable up and down, and the polishing wheel 301, the transmission mechanism 303 and the driving mechanism 302 are relatively fixedly disposed on the floating plate 401, and when in operation, under the action of the elastic force of the floating plate 401, the outer peripheral surface of the polishing wheel 301 is propped against the lower surface of the contact line.

The floating plate 401 in this embodiment is a further modification of the floating plate 401 described in the second embodiment, and the floating plate 401 in this embodiment is different from the floating plate 401 in the second embodiment in that: in the present embodiment, the floating plate 401 is configured to be capable of floating up and down while being configured to: the floating plate 401 is allowed to move back and forth along the direction of travel of the rigid contact wire sander.

The specific structure of the floating plate 401 moving back and forth is as follows:

When the sliding structure mode of the sliding block 404 and the sliding rail 405 is adopted as a guiding mechanism, the sliding rail 405 in the guiding mechanism allows the sliding block 404 to move back and forth along the advancing direction of the rigid contact line milling machine, the moving amount of the back and forth movement is set according to the requirement, and the sliding block 404 can be generally set to be micro-adjustable so as to avoid the sliding block 404 from being separated from the sliding rail 405; when the sliding structure of the optical axis 406 and the guide hole is used as the guide mechanism, the guide hole in the guide mechanism may be designed as a slotted hole, the guide hole allows the optical axis 406 to move back and forth along the advancing direction of the rigid contact line milling machine, and the amount of movement of the back and forth movement is set according to the requirement, and may be generally set as micro-adjustment. Through foretell structural design makes the floating plate 401 can reciprocate, simultaneously owing to the effect of second elastic component 403, the floating plate 401 still can reciprocate, and the both ends of finally floating plate 401 can realize the oscilaltion, and then makes floating plate 401 and grinding machanism 3 on can float ground along the contact line and polish the operation.

The technical effects of this embodiment are:

the embodiment is designed with a floating plate 401, and a driving mechanism 302, a transmission mechanism 303 and a polishing wheel 301 are arranged on the floating plate 401, so that the outer peripheral surface of the polishing wheel 301 can always prop against the lower surface of a contact line under the action of the elastic force of the floating plate 401 during operation; the floating plate 401 is also provided with a guiding mechanism, so that the floating of the floating plate 401 is more stable, and the work of the grinding wheel 301 can be more stable.

While the fundamental principles and main features of the present application and advantages thereof have been shown and described, it will be apparent to those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. A rigid contact line grinding machine comprises a frame, a grinding wheel and a driving mechanism, and is characterized in that,

the frame is slidably mounted on the busbar;

at least one of the grinding wheels is resiliently mounted on the frame, the grinding wheel being configured to: allowing the grinding wheel to move up and down relative to the frame and allowing the grinding wheel to move back and forth along the traveling direction of the rigid contact line grinder, wherein the grinding wheel is used for grinding a contact line arranged on the bus bar, and the outer peripheral surface of the grinding wheel is propped against the lower surface of the contact line in a working state;

the driving mechanism is in transmission connection with the polishing wheel and is used for driving the polishing wheel to work.

2. The rigid contact wire sander as set forth in claim 1, wherein,

a transmission mechanism is arranged between the driving mechanism and the polishing wheel, the transmission mechanism comprises a transmission part and a shell, the transmission part is used for realizing power transmission between the driving mechanism and the polishing wheel, the polishing wheel is rotationally arranged on the shell, a first end of the shell is hinged relative to the driving mechanism, and a second end of the shell is provided with a connecting part;

An elastic mechanism is arranged between the transmission mechanism and the frame, the elastic mechanism comprises a first elastic piece and a mounting part, the first elastic piece is arranged between the connecting part and the mounting part, and the mounting part and the driving mechanism are relatively and fixedly arranged;

under the action of the elastic force of the first elastic piece, the second end of the machine shell swings upwards to the maximum position around the opposite hinging position of the first end of the machine shell and the driving mechanism, and further the polishing wheel is driven to prop against the lower surface of the contact line.

3. The rigid contact wire grinding machine according to claim 2, wherein the elastic mechanism further includes an adjusting knob which is connected to the mounting portion through a screw thread in a vertically adjustable manner, a first end of the first elastic member is connected to the connecting portion, a second end of the first elastic member is connected to the first end of the adjusting knob, and a second end of the adjusting knob is provided with a knob cap;

the distance between the connecting part and the mounting part is changed by rotating the button cap, so that the second end of the shell is driven to swing around the output shaft of the driving mechanism, and the distance between the grinding wheel and the contact line is adjusted.

4. The rigid contact wire sander as set forth in claim 2, wherein,

the first end of the shell is hinged with the output shaft of the driving mechanism and enables the shell to swing around the output shaft of the driving mechanism;

the transmission part comprises a first gear and a second gear which are meshed with each other or in transmission connection, the first gear and the second gear are rotatably arranged in the shell, the first gear is coaxially connected with an output shaft of the driving mechanism, and the second gear is coaxially connected with the grinding wheel;

or the transmission piece comprises a first synchronous belt pulley, a second synchronous belt pulley and a synchronous belt, wherein the first synchronous belt pulley and the second synchronous belt pulley are in transmission connection through the synchronous belt, the first synchronous belt pulley and the second synchronous belt pulley are rotatably arranged in the shell, the first synchronous belt pulley is coaxially connected with an output shaft of the driving mechanism, and the second synchronous belt pulley is coaxially connected with the grinding wheel.

5. The rigid contact wire grinding machine according to claim 4, wherein the grinding wheel is locked on the second gear or the second synchronous pulley through a bolt, a screwing part is arranged at the end part of the bolt, which is arranged outside, a hand-held part is arranged on the second gear or the second synchronous pulley, the hand-held part is arranged outside the machine shell, and the grinding wheel is dismounted from the second gear or the second synchronous pulley through fixing the hand-held part and rotating the screwing part;

Or the grinding wheel is locked on the second gear or the second synchronous pulley through an elastic chuck.

6. The rigid contact wire sander as set forth in claim 2, wherein,

the driving mechanism and the mounting part are relatively and fixedly arranged on the frame, and when the grinding wheel works, the outer peripheral surface of the grinding wheel is propped against the lower surface of the contact line under the action of the elastic force of the first elastic piece;

or, be provided with the floating plate in the frame, floating plate ground upper and lower is floated and is installed in the frame, actuating mechanism with the installation department is fixed relatively and is set up on the floating plate, during operation, under the common elasticity effect of floating plate with first elastic component, the periphery surface of grinding wheel is propped up the lower surface of contact line.

7. The rigid contact wire sander of claim 1, wherein a floating plate is provided on the stand, the floating plate being resiliently mounted on the stand, the floating plate being configured to: allowing the floating plate to move up and down relative to the frame and allowing the floating plate to move back and forth along the direction of travel of the rigid contact wire repairing machine; the grinding wheel and the driving mechanism are relatively and fixedly arranged on the floating plate, and when the grinding wheel works, the outer peripheral surface of the grinding wheel is propped against the lower surface of the contact line under the action of the elastic force of the floating plate.

8. The rigid contact wire sander of claim 6 or 7, wherein a retraction mechanism is disposed between the floating plate and the frame, the retraction mechanism configured to: driving the floating plate to float up and down between a first position and a second position by control of the retraction mechanism, and the retraction mechanism can be used for driving the floating plate to move down from the first position to the second position and be fixed at the second position; the first position is the maximum position of the floating plate when the floating plate is upward, and the second position is the maximum position of the floating plate when the floating plate is downward.

9. The rigid contact wire sander of claim 1, further comprising a position sensor and a controller, wherein the position sensor and the drive mechanism are each electrically connected to the controller;

the position sensor is used for detecting the distance between the axis of the grinding wheel and the lower surface of the contact line and feeding back detection information to the controller;

the controller controls the opening and closing of the driving mechanism according to the detection information fed back by the position sensor, and further controls the rotation or the stopping of the polishing wheel.

10. The rigid contact wire sander of claim 1, further comprising a speed sensor and a controller, wherein the speed sensor and the drive mechanism are each electrically connected to the controller;

the speed sensor is used for detecting the travelling speed of the rigid contact wire polisher and feeding back detection information to the controller;

the controller controls the speed of the driving mechanism according to the detection information fed back by the speed sensor, so as to control the rotation speed of the polishing wheel.