A metro contact line abrasion laser detection machine

Abstract

The present application relates to the technical field of metro contact line abrasion detection, in particular to a metro contact line abrasion laser detection machine, which comprises a shell body and a laser generator installed at the middle position of the upper surface of the shell body, and a face array CCD camera is installed in the shell body on the left and right sides of the laser generator, a bearing seat is slidably connected in the groove opened on the upper surface of the shell body, and a walking wheel assembly and a guide wheel assembly are sequentially installed on the inner side of the bearing seat from top to bottom and in contact with the outer side surface of the rigid contact network busbar. The metro contact line abrasion laser detection machine can continuously blow air around the walking wheel assembly and the guide wheel assembly, so as to blow the dust around the walking wheel assembly and the guide wheel assembly away from the face array CCD camera and the laser generator, avoid the surface adhesion of the dust on the face array CCD camera and the laser generator, and affect the later measurement operation of the metro contact line profile, so as to improve the detection accuracy of the whole abrasion laser detection machine.

Description

Technical Field

[0001] This invention relates to the field of subway contact wire wear detection technology, specifically a subway contact wire wear laser detection machine. Background Technology

[0002] The contact wire mainly refers to the contact wire used in the contact network of electrified railways. It is an important component of the contact network. During long-term operation, the contact wire will wear down due to current flow, mechanical friction and environmental factors. If it is not inspected and maintained in time, it may cause serious consequences such as unstable power supply, train failure and even shutdown. Therefore, it is necessary to use a wear laser inspection machine to inspect the wear of the subway contact wire in order to detect problems in time and carry out timely repair and replacement of the contact wire. For example, the prior art patent with publication number "CN214893085U" is entitled "A Rapid Measurement Device for Contact Wire Wear," which discloses a roof-mounted acquisition device, an in-vehicle detection device, and an under-vehicle device. The roof-mounted acquisition device includes a high-definition area array industrial digital camera and a line laser. The in-vehicle detection device includes a detection host and an electrical controller. The under-vehicle device includes a speed sensor. One end of the electrical controller is connected to the vehicle's power supply, and the other end is connected to the high-definition area array industrial digital camera, the line laser, the detection host, and the speed sensor via a power cable. The high-definition area array industrial digital camera is connected to the detection host via a fiber optic network cable to transmit the acquired image data to the detection host for contact wire wear calculation. The speed sensor is connected to the detection host via a signal line. The detection host is a computer. Another example is the prior art patent with publication number "CN217110815U" entitled "Lightweight Rigid Contact Wire Connector." The "Contact Wire Continuous Wear Measurement Instrument" discloses a unique crawling mechanism that moves along a rigid contact wire. It utilizes a CCD camera and laser generator to perform three-dimensional contour imaging of laser beams for measurement and analysis, enabling continuous wear measurement on the rigid contact wire. It can directly generate the wear width, residual height, and wear angle of the contact wire wear surface. The instrument boasts high measurement frequency and high data accuracy. The crawling mechanism includes a housing unit, two sets of traveling wheels, and two sets of guide wheels. The traveling wheels are mounted on a platform, and the guide wheels are mounted on the vertical sidewalls of the platform. The measurement module is installed inside the housing unit. A pressure spring is installed between the bottom of the measurement module and the bottom of the housing unit to ensure the stability of the measurement module installation. An insulated drag rope is installed at the bottom of the housing unit. In areas where electric drive is not possible or in complex measurement areas, the crawler can be manually driven by hand using the insulated drag rope, enabling a manual walking measurement mode.

[0003] The existing subway contact line wear laser inspection machine described above moves along a platform within the busbar via traveling wheels and guide wheels in its crawling mechanism. When dust accumulates on the platform surface over a long period, the traveling wheels disperse this dust, resulting in a significant amount of dust around the laser inspection machine. This dust adheres to the surfaces of the area-array CCD camera and laser generator, affecting their ability to measure the subway contact line contour and consequently impacting the accuracy of subsequent contact line wear inspections. Therefore, we propose a subway contact line wear laser inspection machine to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a laser inspection machine for subway contact line wear, to solve the problem mentioned in the background art. Currently, existing subway contact line wear laser inspection machines on the market move along a platform within a busbar using traveling wheels and guide wheels within a crawling mechanism. When dust accumulates on the platform surface over a long period, the traveling wheels disperse this dust, resulting in a large amount of dust around the laser inspection machine. This dust adheres to the surfaces of the area array CCD camera and the laser generator, affecting their ability to measure the contour of the subway contact line and consequently impacting the accuracy of subsequent subway contact line wear inspections.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser inspection machine for wear of subway contact lines, comprising an outer shell and a laser generator installed in the middle of its upper surface, and area array CCD cameras installed in the outer shell on both the left and right sides of the laser generator. A support seat is slidably connected in a groove opened on the upper surface of the outer shell, and a traveling wheel assembly and a guide wheel assembly that are in close contact with the outer side of the rigid contact wire busbar are installed sequentially from top to bottom on the inner side of the support seat. An air blowing frame is installed on one side of the support seat, an air supply assembly is installed inside the outer shell, and a self-regulating assembly is installed inside the lower part of the support seat.

[0006] Preferably, the bearing seats are provided in two sets, with two bearing seats in each set. The two bearing seats in each set are connected by a handle. A bidirectional screw rod is installed through a slot in the inner side of the upper rear surface of the outer shell. The outer side of the bidirectional screw rod is symmetrically threaded to the bearing seats located on the rear side. The lower interior of the bearing seats on the front side is slidably connected to a rod installed in the upper front surface of the outer shell.

[0007] Preferably, the walking wheel assembly is in contact with the horizontal surface of the outer side of the rigid contact wire busbar, and the guide wheel assembly is in contact with the vertical surface of the outer side of the rigid contact wire busbar, and a contact wire is installed on the bottom surface of the rigid contact wire busbar.

[0008] Preferably, the air-blowing frame is U-shaped and hollow inside, with air-blowing pipes installed on the side of the air-blowing frame closest to the walking wheel assembly and the guide wheel assembly.

[0009] Preferably, the air supply assembly includes four sets of air control chambers symmetrically installed in the housing, with two chambers in each set. A piston assembly is fitted inside the lower part of each air control chamber, and an exhaust pipe is installed above the air control chamber. The two exhaust pipes in each set are connected, and the upper end of one of the exhaust pipes in each set passes through the upper surface of the housing and is connected to the outer side of the air blowing frame via a connecting hose. An air inlet pipe is installed on the upper outer side of the air control chamber, and the outer end of the air inlet pipe passes through the outer side of the housing. A one-way valve is installed inside both the exhaust pipe and the air inlet pipe. An inclined control plate is installed inside the outer shell, and a rotating rod is fixed through the control plate. The two ends of the rotating rod are rotatably installed inside the outer shell, and a transmission gear is keyed to the outer side of the inner end of the rotating rod. Furthermore, an inverted "T" shaped sliding block is engaged and slidably connected to the upper surface of the control plate, and the upper part of the sliding block is movably connected to the lower end of the piston assembly. A vertical rod is installed inside the outer casing, and a rack assembly in the shape of a "7" is slidably connected through the outer side of the vertical rod. A return spring is nested on the outer side of one end of the vertical rod, and the rack assembly is meshed with a transmission gear.

[0010] Preferably, the self-regulating component includes a single-turn reciprocating screw installed inside the bearing seat, and the upper end of the single-turn reciprocating screw is connected to one end of the traveling wheel assembly through a bevel gear set. A push block is slidably connected to the lower part of the bearing seat through a slot, and the single-turn reciprocating screw is threaded through the inside of the push block. The lower end of the push block passes through a through slot opened on the upper surface of the outer shell and is in close contact with the upper part of the rack assembly. The rack assembly forms a lifting structure through the rectangular push block.

[0011] Preferably, an adjustment rod is installed through the lower interior of the area array CCD camera, and both ends of the adjustment rod are rotatably mounted inside the outer casing. A large gear is keyed to the outer rear end of the adjustment rod, and the lower part of the large gear meshes with a small gear installed inside the outer casing.

[0012] Preferably, a row of saw teeth is installed on the inner side of the rear rack assembly, and the saw teeth are meshed with the pinion.

[0013] Preferably, a self-pushing protrusion is installed on the inner side of the bearing seat, and one side of the self-pushing protrusion is inclined.

[0014] Preferably, two cover plates are symmetrically installed on the upper surface of the outer shell about its transverse center line, and two movable blocks are symmetrically installed on the bottom surface of the cover plates. A crossbar is installed in the groove on the upper surface of the outer shell, and a movable block is slidably connected through the outer side of the crossbar. A connecting spring is nested on the outer side of one end of the crossbar. Grooves are opened inside the left and right sides of the cover plates, and self-push protrusions are inserted into the grooves. The width of the grooves is greater than the maximum width of the self-push protrusions, and the cover plates form a sliding structure through the self-push protrusions.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The laser inspection machine for subway contact line wear allows the air blowing frame to continuously blow air around the traveling wheel assembly and guide wheel assembly. This facilitates blowing dust around the traveling wheel assembly and guide wheel assembly away from the area array CCD camera and laser generator, preventing dust from adhering to the surface of the area array CCD camera and laser generator and affecting subsequent measurement operations of the subway contact line profile. The specific details are as follows: (1) When the walking wheel assembly is walking and rotating, the bevel gear set enables the single-turn reciprocating screw to drive the push block connected to the outer thread to reciprocate and rise and fall. The push block reciprocates and applies a downward thrust to the rack assembly, thereby causing the rack assembly to reciprocate and rise and fall. Therefore, the transmission gear drives the control plate to reciprocate and rotate at a certain angle, thereby causing the two piston assemblies in each group to move towards each other, and causing the two air control chambers in each group to alternately draw air and exhaust air. The air blowing frame can continuously blow air around the walking wheel assembly and the guide wheel assembly, thereby making it easier to blow the dust around the walking wheel assembly and the guide wheel assembly away from the area array CCD camera and the laser generator, avoiding the dust adhering to the surface of the area array CCD camera and the laser generator and affecting the subsequent measurement of the subway contact line contour. Therefore, the detection accuracy of the entire wear laser detection machine can be improved.

[0016] (2) When the rack assembly on the rear side drives the row of sawtooth blocks on the inner side to reciprocate and rise, the small gear and the large gear mesh to drive the adjustment rod and the area array CCD camera to slowly reciprocate at a certain angle. Therefore, the area array CCD camera reciprocates and swings to take pictures at a certain angle. This allows the area array CCD camera to avoid detection errors through multi-degree-of-freedom motion compensation, thus further improving the accuracy of detection.

[0017] (3) When the support seat moves outward to reset, the self-pushing protrusion separates from the groove, and then the cover plate can automatically move inward to reset by the stored force of the connecting spring. Thus, when the entire wear laser inspection machine is not in use, the cover plate can automatically close to cover and protect the laser generator and the area array CCD camera, further preventing external dust from sticking to the laser generator and the area array CCD camera and affecting the accuracy of subsequent inspections. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the outer casing of the present invention; Figure 3 This is a schematic diagram of the left cross-sectional structure of the outer shell of the present invention; Figure 4 This is a schematic diagram of the left-side structure of the support base of the present invention; Figure 5 This is a schematic diagram of the right view of the support structure on the left side of the present invention; Figure 6 This is a partial cross-sectional view of the pneumatic control cavity of the present invention; Figure 7 This is a schematic cross-sectional view of the bearing seat structure of the present invention; Figure 8 This is a top view of the structure of the cover plate after it has been moved inward according to the present invention; Figure 9 This is a cross-sectional view of the structure of the cover plate of the present invention after it is moved outward and connected to the outer shell.

[0019] In the diagram: 1. Outer shell; 2. Two-way lead screw; 3. Bearing seat; 301. Handle; 302. Self-propelled protrusion; 4. Walking wheel assembly; 5. Air blowing frame; 6. Area array CCD camera; 61. Adjusting rod; 62. Large gear; 7. Laser generator; 8. Rigid contact wire busbar; 81. Contact wire; 9. Single-turn reciprocating lead screw; 91. Push block; 10. Rack assembly; 101. Vertical rod; 102. Return spring; 103. Serrated block; 11. Pneumatic control chamber; 111. Piston assembly; 112. Exhaust pipe; 113. Intake pipe; 12. Control plate; 121. Sliding block; 122. Rotating rod; 123. Transmission gear; 13. Cover plate; 131. Groove; 132. Moving block; 14. Crossbar; 15. Connecting spring; 16. Guide wheel assembly; 17. Small gear. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-9 The present invention provides the following technical solution: Example 1: In this example, the subway contact line wear laser inspection machine can continuously blow away dust generated around the traveling wheel assembly 4 and guide wheel assembly 16 during the contact line wear laser inspection process, preventing dust from approaching the area array CCD camera 6 and laser generator 7. This facilitates the protection of the area array CCD camera 6 and laser generator 7, and can improve the accuracy of subsequent area array CCD camera 6 and laser generator 7 inspections. For the specific structure, please refer to the attached diagram. Figures 1-7 As shown, the device includes an outer shell 1 and a laser generator 7 installed in the middle of its upper surface. A CCD camera 6 is installed inside the outer shell 1 on both the left and right sides of the laser generator 7. A support seat 3 is slidably connected in a groove on the upper surface of the outer shell 1. A traveling wheel assembly 4 and a guide wheel assembly 16 that are in contact with the outer side of the rigid contact wire busbar 8 are installed sequentially from top to bottom on the inner side of the support seat 3. An air blowing frame 5 is installed on one side of the support seat 3. An air supply assembly is installed inside the outer shell 1. A self-regulating assembly is installed inside the lower part of the support seat 3.

[0022] There are two sets of support seats 3, with two seats in each set. The two support seats 3 in each set are connected by a handle 301. A double-acting screw rod 2 is installed through a slot in the upper rear surface of the outer shell 1. The outer side of the double-acting screw rod 2 is symmetrically threaded to the support seats 3 located on the rear side. The lower interior of the support seats 3 on the front side is slidably connected to a rod installed in the upper front surface of the outer shell 1. The traveling wheel assembly 4 is in contact with the horizontal surface of the outer side of the rigid contact network busbar 8, and the guide wheel assembly 16 is in contact with the vertical surface of the outer side of the rigid contact network busbar 8. A contact wire 81 is installed on the bottom surface of the rigid contact network busbar 8. The air blowing frame 5 is arranged in a "U" shape. The hollow air-blowing frame 5 has air-blowing pipes installed on one side near the walking wheel assembly 4 and the guide wheel assembly 16. The air supply assembly includes four sets of air-control chambers 11 symmetrically installed inside the outer shell 1, with two chambers in each set. A piston assembly 111 is attached to the lower interior of each air-control chamber 11, and an exhaust pipe 112 is installed above the air-control chamber 11. The two exhaust pipes 112 in each set are connected, and the upper end of one of the exhaust pipes 112 in each set penetrates the upper surface of the outer shell 1 and is connected to the outer side of the air-blowing frame 5 via a connecting hose. An air inlet pipe 113 is installed on the upper outer side of the air-control chamber 11, and the outer end of the air inlet pipe 113 penetrates the outer shell 1. One-way valves are installed on the outer side of the exhaust pipe 112 and the intake pipe 113. An inclined control plate 12 is installed inside the outer casing 1, and a rotating rod 122 is fixedly fixed inside the control plate 12. The two ends of the rotating rod 122 are rotatably installed inside the outer casing 1, and a transmission gear 123 is keyed to the outer side of the inner end of the rotating rod 122. A sliding block 121 in the shape of an inverted "T" is engaged and slidably connected to the upper surface of the control plate 12, and the upper part of the sliding block 121 is movably connected to the lower end of the piston assembly 111. A vertical rod 101 is installed inside the outer casing 1, and a rack in the shape of a "7" is slidably connected to the outer side of the vertical rod 101. The assembly 10 has a return spring 102 nested on the outer side of one end of the vertical rod 101. The rack assembly 10 is meshed with the transmission gear 123. The self-regulating assembly includes a single-turn reciprocating screw 9 installed inside the bearing seat 3. The upper end of the single-turn reciprocating screw 9 is connected to one end of the walking wheel assembly 4 through a bevel gear set. The lower part of the bearing seat 3 has a slotted and slidingly connected push block 91. The push block 91 has a threaded connection to the single-turn reciprocating screw 9. The lower end of the push block 91 passes through a slot opened on the upper surface of the outer shell 1 and is in contact with the upper part of the rack assembly 10. The rack assembly 10 forms a lifting structure through the rectangular push block 91.

[0023] First, manually lift the handle 301 and place the entire subway contact line wear laser inspection machine in the inspection area. Then, manually rotate the left end of the bidirectional lead screw 2. The bidirectional lead screw 2 drives the two sets of bearing seats 3 connected by the outer threads to move inward simultaneously. At the same time, the handle 301 ensures that the two bearing seats 3 in each set move inward simultaneously. When the traveling wheel assembly 4 installed on the inner side of the bearing seat 3 is in contact with the horizontal plane of the rigid contact network busbar 8, and the guide wheel assembly 16 installed on the inner side of the bearing seat 3 is in contact with the vertical side plane of the rigid contact network busbar 8, stop rotating the bidirectional lead screw 2. Then, the motor inside the bearing seat 3 drives the traveling wheel assembly 4 to rotate and move. The traveling wheel assembly 4 drives the entire wear laser inspection machine on the rigid contact network. The outer side of the busbar 8 is moved while the laser beam three-dimensional contour imaging technology of the area array CCD camera 6 and laser generator 7 is used to measure the contour of the contact wire 81 installed on the bottom surface of the rigid contact busbar 8. This allows for the detection of wear on the contact wire 81. The detected signal can then be transmitted to an external terminal device for data display. Since this part is existing technology, it will not be described in detail here. The use of the subway contact wire wear laser inspection machine reduces the uncertainty and danger of manual inspection. Through regular and comprehensive automated inspection, potential safety hazards can be detected in a timely manner, solving the problems of low efficiency of manual inspection by maintenance personnel and the lack of intuitive information in traditional measurement methods.

[0024] When dust accumulates on the surface of the rigid contact wire busbar 8 over a long period of time, the traveling wheel assembly 4 and guide wheel assembly 16 will disperse the dust to all sides as they rotate. The traveling wheel assembly 4, through a bevel gear set, drives the single-turn reciprocating screw 9 to rotate. The rotation of the single-turn reciprocating screw 9 causes the externally threaded push block 91 to reciprocate. When the push block 91 moves downwards, its lower end pushes the corresponding rack assembly 10 downwards. At this time, one side of the rack assembly 10 is on the vertical rod... When the outer side of 101 slides, the return spring 102 stores force. When the rack assembly 10 moves downward, it drives the transmission gear 123 and the rotating rod 122 to rotate. The rotating rod 122 drives the control plate 12 to rotate. At this time, the control plate 12 pushes one piston assembly 111 to move upward and pushes the other piston assembly 111 to move downward. The sliding block 121, which is movably connected to the lower end of the piston assembly 111, is engaged and slidably connected in the control plate 12. Therefore, one piston assembly 111 passes the gas in the corresponding pneumatic control chamber 11 through the internally installed one-way valve. The exhaust pipe 112 and connecting hose of the valve deliver air into the air blowing frame 5, causing the air blowing pipe on one side of the air blowing frame 5 to blow air towards the side of the traveling wheel assembly 4 and the guide wheel assembly 16. This blows away the dust generated around the traveling wheel assembly 4 and the guide wheel assembly 16, keeping the dust away from the area array CCD camera 6 and the laser generator 7, thus facilitating the protection of the area array CCD camera 6 and the laser generator 7. When the other piston assembly 111 moves downward, it allows the other piston assembly 111 to expel external air through the air intake pipe 113, which is internally equipped with a one-way valve. Gas is drawn into the corresponding air control chamber 11. Filters can be installed in the air blowing pipe and air inlet pipe 113 to prevent external dust from entering. When the push block 91 moves upward, the rack assembly 10 is automatically moved upward to reset by the stored force of the reset spring 102. This causes the control plate 12 to push one piston assembly 111 downward and push the other piston assembly 111 upward. This operation is repeated so that the two air control chambers 11 in each group can work together to continuously deliver gas to the air blowing frame 5, thereby facilitating continuous air blowing and dust removal in the air blowing frame 5.

[0025] As attached Figure 7As shown, the pitch of the outer thread of the single-turn reciprocating screw 9 in this application can be set to be larger, so that the speed of the reciprocating lifting and lowering of the push block 91 connected to the outer side when the single-turn reciprocating screw 9 rotates is faster. Alternatively, the diameter of the bevel gear on the outer side of one end of the walking wheel assembly 4 can be larger than the diameter of the bevel gear on the outer side of the upper end of the single-turn reciprocating screw 9, so that the rotation speed of the single-turn reciprocating screw 9 is greater than the rotation speed of the walking wheel assembly 4. In this way, even if the walking wheel assembly 4 moves slowly, it will not affect the continuous gas delivery to the air blowing frame 5. At the same time, the bevel gear set can be replaced with a motor, so that the motor is connected to the upper end of the single-turn reciprocating screw 9 through a coupling, and the rotation of the single-turn reciprocating screw 9 can be directly controlled by the motor, thus not affecting the continuous air blowing dust removal operation and dust removal effect of the air blowing frame 5.

[0026] Example 2: The subway contact line wear laser inspection machine in this example, based on Example 1, can automatically perform reciprocating rotation and swinging imaging of the area array CCD camera 6 at a certain angle. This allows the area array CCD camera 6 to avoid detection errors through multi-degree-of-freedom motion compensation, thus further improving the detection accuracy. For the specific structure, please refer to the attached diagram. Figure 6 As shown, an adjustment rod 61 is installed through the lower part of the area array CCD camera 6, and both ends of the adjustment rod 61 are rotatably installed inside the outer shell 1. A large gear 62 is keyed to the outer rear end of the adjustment rod 61, and the lower part of the large gear 62 is meshed with a small gear 17 installed inside the outer shell 1. A row of sawtooth blocks 103 is installed on the inner side of the rack assembly 10 on the rear side, and the sawtooth blocks 103 are meshed with the small gear 17.

[0027] When the rack assembly 10 on the rear side reciprocates, it drives the row of sawtooth blocks 103 on the inner side to reciprocate as well. At this time, the sawtooth blocks 103 drive the meshing pinion 17 to reciprocate at a certain angle. Then, the pinion 17 drives the large gear 62 and the adjusting rod 61 to slowly reciprocate at a certain angle. Therefore, the adjusting rod 61 drives the area array CCD camera 6 to slowly reciprocate at a certain angle. This causes the area array CCD camera 6 to reciprocate and swing to take pictures at a certain angle. This allows the area array CCD camera 6 to avoid detection errors through multi-degree-of-freedom motion compensation, thus further improving the detection accuracy. Magnets with opposite magnetic poles can be installed above the rack assembly 10 and inside the corresponding outer shell 1. After the rack assembly 10 moves upward and resets, it is attracted by the magnets with opposite magnetic poles, which can ensure the stability of the rack assembly 10 after it rises.

[0028] Example 3: Based on Example 1, the subway contact line wear laser inspection machine in this example automatically closes the cover plate 13 when the entire machine is not in use to protect the laser generator 7 and the area array CCD camera 6. This further prevents external dust from adhering to the laser generator 7 and the area array CCD camera 6, thus affecting the accuracy of subsequent inspections. For the specific structure, please refer to the attached diagram. Figures 8-9 As shown, a self-push protrusion 302 is installed on the inner side of the bearing seat 3, and one side of the self-push protrusion 302 is inclined. Two cover plates 13 are symmetrically installed on the upper surface of the outer shell 1 about its transverse center line, and two moving blocks 132 are symmetrically installed on the bottom surface of the cover plate 13. A crossbar 14 is installed in the groove on the upper surface of the outer shell 1, and the moving block 132 is slidably connected through the outer side of the crossbar 14. A connecting spring 15 is nested on the outer side of one end of the crossbar 14. Grooves 131 are opened in the inner side of both the left and right sides of the cover plate 13, and the self-push protrusion 302 is inserted into the inner side of the groove 131. The width of the groove 131 is greater than the maximum width of the self-push protrusion 302, and the cover plate 13 forms a sliding structure through the self-push protrusion 302.

[0029] When the bidirectional lead screw 2 is manually rotated, it drives the bearing seat 3 to move inward. At this time, one end of the self-pushing protrusion 302 installed inside the bearing seat 3 is inserted into the groove 131 in the cover plate 13. As the bearing seat 3 drives the self-pushing protrusion 302 to continue moving into the groove 131, because one side of the self-pushing protrusion 302 is inclined, it automatically drives the two cover plates 13 to move outward after being fully inserted into the groove 131. At this time, the moving block 132 on the bottom surface of the cover plate 13 slides outside the crossbar 14 in the groove on the upper surface of the outer shell 1. The connecting spring 15 stores force. When the wear laser inspection machine is not in use, the bidirectional lead screw 2 is manually rotated in the opposite direction, and the same process occurs as described above. The support seat 3 drives the self-push protrusion 302 to move outward, causing the self-push protrusion 302 to separate from the groove 131. At this time, the force stored by the connecting spring 15 automatically drives the moving block 132 and the cover plate 13 to move inward, thereby making the two cover plates 13 fit together. Thus, the two cover plates 13 cooperate with each other to cover and protect the area array CCD camera 6 and laser generator 7, preventing external dust and impurities from falling onto the area array CCD camera 6 and laser generator 7, and avoiding affecting the detection accuracy of the area array CCD camera 6 and laser generator 7. At the same time, sealing gaskets can be installed on the bottom surface of the cover plate 13 and the side surface near the area array CCD camera 6 and laser generator 7 to further improve the sealing performance, thereby completing a series of operations.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser inspection machine for wear of subway contact lines, comprising a housing (1) and a laser generator (7) mounted in the middle of its upper surface, wherein area array CCD cameras (6) are installed in the housing (1) on both the left and right sides of the laser generator (7), characterized in that: A support seat (3) is slidably connected in a groove on the upper surface of the outer shell (1). A traveling wheel assembly (4) and a guide wheel assembly (16) that are in contact with the outer surface of the rigid contact wire busbar (8) are sequentially installed on the inner side of the support seat (3) from top to bottom. An air-blowing frame (5) is installed on one side of the support seat (3). An air supply assembly is installed inside the outer shell (1). A self-regulating assembly is installed inside the lower part of the support seat (3). The air supply assembly includes four sets of air control chambers (11) symmetrically installed inside the outer shell (1), with two chambers in each set. The piston assembly (111) is attached to the lower interior, and an exhaust pipe (112) is installed above the pneumatic control chamber (11). The two exhaust pipes (112) in each group are connected, and the upper end of one of the exhaust pipes (112) in each group passes through the upper surface of the outer shell (1) and is connected to the outer side of the air blowing frame (5) through a connecting hose. An air inlet pipe (113) is installed on the upper outer side of the pneumatic control chamber (11), and the outer end of the air inlet pipe (113) passes through the outer side of the outer shell (1). A one-way valve is installed inside both the exhaust pipe (112) and the air inlet pipe (113). An inclined control plate (12) is installed inside the outer shell (1), and a rotating rod (122) is fixed through the control plate (12). The two ends of the rotating rod (122) are rotatably installed inside the outer shell (1), and a transmission gear (123) is keyed to the outer side of the inner end of the rotating rod (122). A sliding block (121) in the shape of an inverted "T" is engaged and slidably connected to the upper surface of the control plate (12), and the upper part of the sliding block (121) is movably connected to the lower end of the piston assembly (111). The outer shell (1) is equipped with a vertical rod (101), and a rack assembly (10) in the shape of a "7" is slidably connected to the outside of the vertical rod (101). A return spring (102) is nested on the outside of one end of the vertical rod (101). The rack assembly (10) is meshed with a transmission gear (123). The self-regulating assembly includes a single-turn reciprocating screw (9) installed inside the bearing seat (3). The upper end of the single-turn reciprocating screw (9) is connected to one end of the walking wheel assembly (4) through a bevel gear set. A push block (91) is slidably connected to the lower part of the bearing seat (3) through a slot. The push block (91) is threadedly connected to the single-turn reciprocating screw (9). The lower end of the push block (91) is connected to the upper part of the rack assembly (10) through a through slot on the upper surface of the outer shell (1). The rack assembly (10) forms a lifting structure through the rectangular push block (91).

2. The laser inspection machine for subway contact line wear according to claim 1, characterized in that: The bearing seat (3) is provided in two sets, with two in each set. The two bearing seats (3) in each set are connected by a handle (301). A double-acting screw (2) is installed through a slot on the upper rear surface of the outer shell (1). The outer side of the double-acting screw (2) is symmetrically threaded to the bearing seat (3) located on the rear side. The lower interior of the bearing seat (3) on the front side is slidably connected to a rod installed on the upper front surface of the outer shell (1).

3. The laser inspection machine for subway contact line wear according to claim 1, characterized in that: The walking wheel assembly (4) is in contact with the horizontal surface outside the rigid contact wire busbar (8), and the guide wheel assembly (16) is in contact with the vertical surface outside the rigid contact wire busbar (8). The bottom surface of the rigid contact wire busbar (8) is equipped with a contact line (81).

4. The laser inspection machine for subway contact line wear according to claim 1, characterized in that: The air-blowing frame (5) is U-shaped and hollow inside. Air-blowing pipes are installed on the side of the air-blowing frame (5) near the walking wheel assembly (4) and the guide wheel assembly (16).

5. A laser inspection machine for subway contact line wear according to claim 1, characterized in that: An adjustment rod (61) is installed through the lower interior of the area array CCD camera (6), and both ends of the adjustment rod (61) are rotatably installed inside the outer shell (1). A large gear (62) is keyed to the outer rear end of the adjustment rod (61), and the lower part of the large gear (62) is meshed with a small gear (17) installed inside the outer shell (1).

6. A laser inspection machine for subway contact line wear according to claim 5, characterized in that: A row of saw teeth (103) is mounted on the inner side of the rack assembly (10) on the rear side, and the saw teeth (103) mesh with the pinion (17).

7. A laser inspection machine for subway contact line wear according to claim 1, characterized in that: The inner side of the bearing seat (3) is equipped with a self-push protrusion (302), and one side of the self-push protrusion (302) is inclined.

8. A laser inspection machine for subway contact line wear according to claim 7, characterized in that: Two cover plates (13) are symmetrically installed on the upper surface of the outer shell (1) about its transverse center line, and two moving blocks (132) are symmetrically installed on the bottom surface of the cover plates (13). A crossbar (14) is installed in the groove on the upper surface of the outer shell (1), and the moving block (132) is slidably connected through the outer side of the crossbar (14). A connecting spring (15) is nested on the outer side of one end of the crossbar (14). Grooves (131) are opened in the interior of both the left and right sides of the cover plate (13), and a self-push protrusion (302) is inserted into the interior of the groove (131). The width of the groove (131) is greater than the maximum width of the self-push protrusion (302), and the cover plate (13) forms a sliding structure through the self-push protrusion (302).

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