Rigid contact line abnormal wear maintenance equipment

Abstract

The invention discloses a rigid contact line abnormal wear maintenance device, and belongs to the technical field of rigid contact line maintenance devices. The rigid contact line abnormal wear maintenance equipment comprises a rack main body, a polishing unit, a suspension walking unit and a limiting idle wheel assembly are arranged on the rack main body, the polishing unit comprises a lifting platform, an electric push cylinder and a pressure sensor are arranged between the lifting platform and a rack bottom plate, and a plurality of polishing motors are arranged on the lifting platform; the output end of each grinding motor is vertically arranged, a grinding stone is arranged on each grinding motor, the mesh number of the grinding stones in the grinding and polishing unit is set to be different, and the grinding and polishing unit has two functions of grinding and polishing; the pressure sensor and the electric push cylinder can regulate and control the polishing pressure, control the polishing precision and guarantee the consistency of the surface of the rigid contact line after polishing is completed, the situation of abnormal polishing of the contact line is completely eradicated, the polishing effect is good, and the polishing efficiency is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of rigid catenary maintenance equipment, and particularly relates to a rigid catenary abnormal wear maintenance equipment. Background Art

[0002] The catenary is an important part of the rail transit power supply system. The rigid catenary is erected on the rigid busbar and transmits electric energy through the sliding contact with the pantograph. With the continuous operation of the train, the surface of the catenary is prone to wear, which not only affects the stability of the power supply system, but may also lead to equipment failures and safety hazards. Therefore, regular maintenance of the rigid catenary is a key measure to ensure the normal operation of the power supply system.

[0003] The traditional maintenance method for rigid catenaries is manual grinding and polishing. Maintenance personnel use coarse sandpaper and fine sandpaper to polish the catenary along its direction to complete the grinding and polishing work. This process has a large labor intensity, unstable manual grinding pressure. Too low grinding pressure results in poor grinding effect and repeated grinding at the same position, with low grinding efficiency; too high grinding pressure leads to excessive grinding, reducing the service life of the catenary, affecting the pantograph-catenary coupling relationship, and further affecting the stability of train operation. And there are certain safety hazards during the maintenance process. Burrs on the catenary may cut maintenance personnel, and a large amount of metal particles and dust generated during the grinding process will seriously affect the physical health of maintenance personnel when inhaled during work.

[0004] In addition, there are also the following problems during the use of rigid catenaries. Catenary eccentric wear is one of the common problems. Due to the uneven contact between the catenary and the carbon skate of the pantograph, one side of the catenary wears severely while the other side wears less. This phenomenon will cause changes in the geometric shape of the catenary, affecting the service life of the catenary and the stability and reliability of power supply. When the catenary shows eccentric wear, manual re-grinding and maintenance are required to restore the geometric shape of the catenary to a circular arc to prevent the "sharp edge" phenomenon between the catenary and the carbon skate, affecting the pantograph-catenary relationship. The eccentric wear problem not only increases the difficulty of manual maintenance work, but also increases the difficulty of regulating the grinding pressure during maintenance. Individual eccentric wear positions are relatively demanding, and the manual restoration effect is poor, etc. Summary of the Invention

[0005] Based on the problems existing in the above background art, the present invention proposes a rigid catenary abnormal wear maintenance equipment, which solves the problems of low grinding efficiency and unstable grinding quality in the prior art for manually grinding and polishing rigid catenaries.

[0006] The embodiments of the present invention are implemented as follows: The present invention provides a maintenance device for abnormal wear of a rigid contact wire, which comprises a frame body. The frame body includes a horizontally arranged frame bottom plate and two frame side plates vertically arranged on both sides of the frame bottom plate respectively; two sets of grinding and polishing units are arranged on the frame bottom plate; A suspension and walking unit for cooperating with the rigid contact wire is arranged at the top of the frame body; Each set of the grinding and polishing units includes a lifting platform arranged on the frame bottom plate. An electric push cylinder is arranged between the lifting platform and the frame bottom plate. The bottom of the electric push cylinder is fixedly connected to the upper end surface of the frame bottom plate. A pressure sensor is arranged on the piston rod of the electric push cylinder, and the top of the pressure sensor is fixedly connected to the lower end surface of the lifting platform; at least one grinding motor is arranged on the lifting platform. The output end of the grinding motor is vertically arranged and a grinding stone is arranged thereon; the meshes of the grinding stones in the two sets of grinding and polishing units are different.

[0007] Further, two grinding motors are arranged on the lifting platform; each set of the grinding and polishing units further includes an angle adjusting device. Each angle adjusting device includes a bearing seat, a carrier table and an angle adjusting motor. The bearing seat is fixedly arranged on the upper end surface of the lifting platform. A connecting shaft rod is rotatably arranged in the bearing seat. The two ends of the connecting shaft rod are respectively located on both sides of the bearing seat. A driven belt pulley is fixedly arranged on the rod section of the connecting shaft rod. The two sides of the end of the connecting shaft rod are respectively connected with a carrier table. A gap is arranged between the bottom of each carrier table and the upper end surface of the lifting platform. A grinding motor is arranged on each carrier table; The angle adjusting motor is fixedly arranged on the frame side plate. A driving belt pulley is arranged on the output shaft of the angle adjusting motor. The driving belt pulley is in transmission connection with the driven belt pulley through a transmission belt.

[0008] Further, the rotation directions of the two grinding motors in each set of the grinding and polishing units are opposite.

[0009] Further, a plurality of guiding holes are arranged through the frame bottom plate; a plurality of guiding rods are fixedly arranged on the lower end surface of the lifting platform. Each guiding rod is in sliding fit with a guiding hole. A lifting limiting block with a diameter larger than the guiding hole is arranged at the bottom of each guiding rod.

[0010] Further, a lifting handle is arranged on the outer side wall of each of the two frame side plates.

[0011] Further, the suspension and walking unit includes two mounting plates arranged along the length direction of the frame side plates. The two mounting plates are respectively provided with clamping clamps which cooperate with each other; Each mounting plate is connected to the top of the side plate of the frame through a hinge. At least one set of driving wheel components and one set of driven wheel assemblies are arranged on each mounting plate. Each set of the driving wheel components includes a driving motor fixedly connected to the mounting plate. A coupling and a first guide wheel shaft are arranged on the output shaft of the driving motor, and a suspension guide wheel is arranged on the first guide wheel shaft. Each set of the driving wheel components includes a second guide wheel shaft fixedly connected to the mounting plate, and a driven guide wheel is arranged on the second guide wheel shaft. Both the suspension guide wheel and the driven guide wheel are in contact with the top of the rigid contact wire.

[0012] Further, a limit idler wheel assembly is arranged at both ends in the length direction of the bottom plate of the frame. Each limit idler wheel assembly includes a connecting rod. The two sides of the connecting rod are respectively fixedly connected to the two side plates of the frame. Two limit wheels are horizontally arranged at intervals on the middle rod section of the connecting rod. The outer edges of the tops of the two limit wheels are in contact with the grooves at the bottom of the rigid contact wire.

[0013] Further, the two grinding and polishing units are both located between the two limit idler wheel assemblies.

[0014] The beneficial effects of the present invention are as follows: 1. For a rigid contact wire abnormal wear maintenance device provided by the present invention, the meshes of the grinding stones in the two grinding and polishing units are set differently, so that one grinding and polishing unit performs the grinding task and the other grinding and polishing unit performs the polishing task. On the lifting platforms controlled by the electric push cylinders with pressure sensors in the two grinding and polishing units, the electric push cylinders in the two grinding and polishing units independently control the grinding pressure of the grinding stones during grinding and polishing, and cooperate with the feedback signal of the pressure sensor for dynamic pressure control. It realizes the regulation of the grinding pressure, the control of the grinding accuracy, and the guarantee of the consistency of the surface of the rigid contact wire after grinding, eliminates the abnormal grinding of the contact wire, has a good grinding effect and a high grinding efficiency.

[0015] 2. For a rigid contact wire abnormal wear maintenance device provided by the present invention, an angle adjustment device is arranged on each grinding and polishing unit. The angle adjustment device drives the grinding and polishing unit to rotate, so as to meet the functional requirement of adjustable grinding stone angle, effectively deal with the problem of uneven wear of the contact wire, repair it into an arc shape within a certain range, effectively solve the "sharp edge" phenomenon caused by the uneven wear problem, and improve the pantograph-catenary coupling relationship. It has the advantages of a wide grinding area, a high grinding efficiency, and a good maintenance effect.

[0016] 3. For a rigid contact wire abnormal wear maintenance device provided by the present invention, the rotation directions of the two grinding motors in each grinding and polishing unit are opposite, which balances the influence of the friction force on the device during the maintenance process and improves the grinding accuracy of the device.

[0017] 4. The abnormal wear maintenance device for rigid contact lines provided by the present invention realizes the quick and simple installation of the entire maintenance device on the rigid contact line by setting up a suspension and walking unit. Meanwhile, when the suspension and walking unit works, it drives the grinding and polishing unit to move along the rigid contact line to complete the maintenance work of the rigid contact line, reducing the manual work intensity. During the movement of the entire maintenance device on the rigid contact line, the limiting wheels in the limiting idler wheel assembly contact the groove at the bottom of the rigid contact line, playing a guiding role and reducing shaking, making the movement of the entire maintenance device on the rigid contact line smoother and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. As shown in the drawings, the above-mentioned and other objects, features, and advantages of the present invention will become clearer. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale in actual size, and the focus is on showing the gist of the present invention.

[0019] Figure 1 It is a three-dimensional structure schematic diagram of an abnormal wear maintenance device for rigid contact lines.

[0020] Figure 2 It is a three-dimensional structure schematic of the grinding and polishing unit Figure 1 .

[0021] Figure 3 It is a three-dimensional structure schematic of the grinding and polishing unit Figure 2 .

[0022] Figure 4 It is a front view structure schematic diagram of the driving wheel component and the driven wheel assembly.

[0023] Figure 5 It is a top view structure schematic diagram of the driving wheel component and the driven wheel assembly.

[0024] Figure 6 It is a structure schematic diagram of the limiting idler wheel assembly.

[0025] Among them, 1. Frame main body; 11. Frame bottom plate; 12. Frame side plate; 2. Grinding and polishing unit; 21. Lifting platform; 22. Electric push cylinder; 23. Pressure sensor; 24. Grinding motor; 25. Grinding stone; 26. Bearing seat; 27. Loading platform; 28. Angle adjustment motor; 29. Coupling rod; 210. Driven belt pulley; 211. Driving belt pulley; 212. Transmission belt; 213. Guide rod; 214. Lifting limit block; 3. Suspension walking unit; 30. Mounting plate; 31. Driving wheel assembly; 311. Driving motor; 312. Coupling; 313. First guide wheel shaft; 314. Suspension guide wheel; 32. Driven wheel assembly; 321. Second guide wheel shaft; 322. Driven guide wheel; 4. Lifting handle; 5. Limiting idler wheel assembly; 51. Connecting rod; 52. Limiting wheel; 6. Clamping pliers; 7. Hinge. Specific implementation manner

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0030] Please refer to Figures 1 to 3 As shown, the present invention provides a rigid catenary abnormal wear maintenance device, which includes a frame main body 1. The frame main body 1 includes a horizontally arranged frame bottom plate 11 and two frame side plates 12 vertically arranged on both sides of the frame bottom plate 11; a lifting handle 4 is arranged on the outer side walls of the two frame side plates 12. The arrangement of the lifting handle 4 facilitates the lifting and carrying of the entire rigid catenary abnormal wear maintenance device.

[0031] Two groups of grinding and polishing units 2 are arranged on the frame bottom plate 11, and a suspension walking unit 3 for cooperating with the rigid contact line is arranged on the top of the frame body 1; each group of the grinding and polishing units 2 includes a lifting platform 21 arranged on the frame bottom plate 11, and an electric push cylinder 22 is arranged between the lifting platform 21 and the frame bottom plate 11, and the bottom of the electric push cylinder 22 is fixedly connected to the upper end surface of the frame bottom plate 11, and the piston rod of the electric push cylinder 22 is provided with a pressure sensor 23, and the top of the pressure sensor 23 is fixedly connected to the lower end surface of the lifting platform 21; at least one grinding motor 24 is arranged on the lifting platform 21, and the output end of the grinding motor 24 is arranged vertically and a grinding stone 25 is arranged thereon; the mesh counts of the grinding stones 25 in the two groups of grinding and polishing units 2 are different. By controlling the extension and contraction of the piston rod of the electric push cylinder 22, the height change of the grinding stone 25 in the vertical direction is realized, so as to facilitate the grinding or polishing of the rigid contact line. The pressure sensor 23 detects the pressure in real time.

[0032] The mesh numbers of the grinding stones 25 in the two grinding and polishing units 2 are set to be different, so that one group of grinding and polishing units 2 performs the grinding task, and the other group of grinding and polishing units 2 performs the polishing task; on the lifting platform 21 controlled by the electric push cylinder 22 with pressure sensor 23 of the two groups of grinding and polishing units 2, the electric push cylinder 22 in the two groups of grinding and polishing units 2 independently controls the grinding pressure of the grinding stone 25 during grinding and polishing, and performs dynamic pressure control in conjunction with the feedback signal of the pressure sensor 23. It realizes the control of grinding pressure, the control of grinding accuracy and the consistency of the rigid contact line surface after grinding, eliminates the abnormal grinding of the contact line, and has good grinding effect and high grinding efficiency.

[0033] Furthermore, the two grinding motors 24 in each group of the grinding and polishing units 2 rotate in opposite directions, thereby balancing the influence of friction on the equipment during maintenance and improving the grinding accuracy of the equipment.

[0034] The frame bottom plate 11 is provided with a plurality of guide holes; the lower end surface of the lifting platform 21 is fixed with a plurality of guide rods 213, each of which is slidably matched with one of the guide holes, and the bottom of each guide rod 213 is provided with a lifting limit block 214 having a diameter larger than the guide hole. The plurality of guide rods 213 play a guiding role, making the lifting platform 21 rise and fall more smoothly and stably. The lifting limit block 214 is used to limit the maximum lifting height of the lifting platform 21 to prevent the guide rod 213 from falling out of the guide hole.

[0035] Preferably but not limited thereto, two of the grinding motors 24 are provided on the lifting platform 21; each grinding and polishing unit 2 further includes an angle adjusting device, and each angle adjusting device includes a bearing block 26, a carrier table 27 and an angle adjusting motor 28. The bearing block 26 is fixedly provided on the upper end surface of the lifting platform 21. A connecting shaft rod 29 is rotatably provided in the bearing block 26. Both ends of the connecting shaft rod 29 are located on both sides of the bearing block 26. A driven pulley 210 is fixedly provided on the rod section of the connecting shaft rod 29. Both sides of the end of the connecting shaft rod 29 are respectively connected with a carrier table 27. A gap is provided between the bottom of each carrier table 27 and the upper end surface of the lifting platform 21. A grinding motor 24 is provided on each carrier table 27. The angle adjusting motor 28 is fixedly provided on the side plate 12 of the frame. A driving pulley 211 is provided on the output shaft of the angle adjusting motor 28. The driving pulley 211 is in transmission connection with the driven pulley 210 through a transmission belt 212.

[0036] Preferably but not limited thereto, as Figures 1 to 3 shown, the two grinding motors 24 are arranged along the length direction of the frame bottom plate 11, and the axial direction of the connecting shaft rod 29 is arranged along the width direction of the frame bottom plate 11. When it is necessary to adjust the grinding direction of the grindstone 25, the angle adjusting motor 28 is started. The rotating angle adjusting motor 28 drives the driving pulley 211 to rotate. The driving pulley 211 drives the driven pulley 210 and the connecting shaft rod 29 to rotate through the transmission belt 212. Finally, the carrier tables 27 fixedly connected to both ends of the connecting shaft rod 29 rotate. The rotating carrier tables 27 drive the grinding motor 24 and the grindstone 25 at the output end of the grinding motor 24 to adjust their positions, so as to meet the functional requirements of the adjustable angle of the grindstone 25, effectively handle the problem of eccentric wear of the contact wire, repair it into an arc shape within a certain range, effectively solve the "sharp edge" phenomenon caused by the eccentric wear problem, improve the pantograph-catenary coupling relationship, and has the advantages of a wide grinding area, high grinding efficiency and good maintenance effect.

[0037] As Figure 1 、 Figure 4 and Figure 5 shown, as a specific setting mode of the suspension walking unit 3, the suspension walking unit 3 includes two mounting plates 30 arranged along the length direction of the side plate 12 of the frame. The two mounting plates 30 are respectively provided with clamping clamps 6 that cooperate with each other; Each mounting plate 30 is connected to the top of the side plate 12 of the frame through a hinge 7. Along the length direction of each mounting plate 30, two sets of driving wheel components 31 and two sets of driven wheel assemblies 32 are arranged. The two sets of driven wheel assemblies 32 are located between the two sets of driving wheel components 31. Each set of the driving wheel components 31 includes a driving motor 311 fixedly connected to the mounting plate 30. A coupling 312 and a first guide wheel shaft 313 are arranged on the output shaft of the driving motor 311. A suspension guide wheel 314 is arranged on the first guide wheel shaft 313. Each set of the driving wheel components 31 includes a second guide wheel shaft 321 fixedly connected to the mounting plate 30. A driven guide wheel 322 is arranged on the second guide wheel shaft 321. The suspension guide wheel 314 and the driven guide wheel 322 are both in contact with the top of the rigid contact line. When installing the entire rigid contact line abnormal wear maintenance device, the two mounting plates 30 are closed, so that the suspension guide wheels 314 and the driven guide wheels 322 in the two sets of driving wheel components 31 and the two sets of driven wheel assemblies 32 are in contact with the top of the rigid contact line. Then the two clamping pliers 6 are connected, and the entire maintenance device is quickly and simply installed on the rigid contact line. When the driving motor 311 drives the suspension guide wheel 314 to rotate, the entire rigid contact line abnormal wear maintenance device moves along the rigid contact line to complete the rigid contact line maintenance work, reducing the manual work intensity.

[0038] Further, as Figure 1 and Figure 6 shown, a limit idler wheel assembly 5 is arranged at both ends of the length direction of the frame bottom plate 11. The two grinding and polishing units 2 are both located between the two limit idler wheel assemblies 5. Each limit idler wheel assembly 5 includes a connecting rod 51. The two sides of the connecting rod 51 are respectively fixedly connected to the two side plates 12 of the frame. Two limit wheels 52 are horizontally arranged at intervals on the middle rod section of the connecting rod 51. The outer edges of the tops of the two limit wheels 52 are both in contact with the grooves at the bottom of the rigid contact line, playing a guiding role and reducing the shaking, so that the entire maintenance device moves more smoothly on the rigid contact line.

[0039] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rigid contact wire abnormal wear maintenance device, characterized in that, It includes a frame body, and the frame body includes a horizontally arranged frame bottom plate and two frame side plates vertically arranged on both sides of the frame bottom plate respectively; two groups of grinding and polishing units are arranged on the frame bottom plate; At the top of the frame body, there is a suspension walking unit for cooperating with a rigid catenary; Each group of the grinding and polishing units includes a lifting platform arranged on the frame bottom plate. An electric push cylinder is arranged between the lifting platform and the frame bottom plate. The bottom of the electric push cylinder is fixedly connected to the upper end surface of the frame bottom plate. A pressure sensor is arranged on the piston rod of the electric push cylinder, and the top of the pressure sensor is fixedly connected to the lower end surface of the lifting platform; at least one grinding motor is arranged on the lifting platform. The output end of the grinding motor is arranged vertically and a grindstone is arranged thereon; the mesh numbers of the grindstones in the two groups of grinding and polishing units are different.

2. The abnormal wear maintenance device for rigid catenaries according to claim 1, wherein There are two grinding motors arranged on the lifting platform; Each group of the grinding and polishing units further includes an angle adjustment device. Each angle adjustment device includes a bearing seat, a loading platform and an angle adjustment motor. The bearing seat is fixedly arranged on the upper end surface of the lifting platform. A connecting shaft rod is rotatably arranged in the bearing seat. The two ends of the connecting shaft rod are respectively located on both sides of the bearing seat. A driven belt pulley is fixedly arranged on the rod section of the connecting shaft rod. Both sides of the end of the connecting shaft rod are respectively connected with a loading platform. A gap is arranged between the bottom of each loading platform and the upper end surface of the lifting platform. A grinding motor is arranged on each loading platform; The angle adjustment motor is fixedly arranged on the frame side plate. A driving belt pulley is arranged on the output shaft of the angle adjustment motor. The driving belt pulley is in transmission connection with the driven belt pulley through a transmission belt.

3. The abnormal wear maintenance device for rigid catenary according to claim 2, characterized in that The rotation directions of the two grinding motors in each group of the grinding and polishing units are opposite.

4. The abnormal wear maintenance device for rigid contact lines according to claim 2, characterized in that, A plurality of guiding holes are arranged through the frame bottom plate; A plurality of guiding rods are fixedly arranged on the lower end surface of the lifting platform. Each guiding rod is in sliding fit with a guiding hole. A lifting limiting block with a diameter larger than the guiding hole is arranged at the bottom of each guiding rod.

5. The abnormal wear maintenance device for rigid contact lines according to claim 1, characterized in that, A lifting handle is arranged on the outer side wall of each of the two frame side plates.

6. The abnormal wear maintenance device for rigid contact lines according to any one of claims 1 to 5, characterized in that, The suspension walking units each include two mounting plates arranged along the length direction of the frame side plates. The two mounting plates are respectively provided with clamping pliers that cooperate with each other; Each mounting plate is connected to the top of the frame side plate through a hinge. At least one group of driving wheel components and one group of driven wheel assemblies are arranged on each mounting plate. Each group of the driving wheel components includes a driving motor fixedly connected to the mounting plate. A coupling and a first guiding wheel shaft are arranged on the output shaft of the driving motor. A suspension guiding wheel is arranged on the first guiding wheel shaft; each group of the driving wheel components includes a second guiding wheel shaft fixedly connected to the mounting plate. A driven guiding wheel is arranged on the second guiding wheel shaft; both the suspension guiding wheel and the driven guiding wheel are in contact with the top of the rigid catenary.

7. The abnormal wear maintenance device for rigid contact lines according to claim 1, characterized in that, A limiting idler wheel assembly is provided at each of the two ends in the length direction of the frame bottom plate. Each limiting idler wheel assembly includes a connecting rod. The two sides of the connecting rod are respectively fixedly connected to the two frame side plates. Two limiting wheels are horizontally and spaced apart on the middle rod section of the connecting rod. The outer edges of the tops of the two limiting wheels are in contact with the grooves at the bottom of the rigid contact wire.

8. The abnormal wear maintenance device for rigid contact lines according to claim 7, characterized in that, The two grinding and polishing units are both located between the two limiting idler wheel assemblies.

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