A platform safety protection sensor signal device based on a high-precision laser light source

Abstract

The present application relates to the technical fields of platform safety protection, in particular to a kind of platform safety protection sensor signal device based on high-precision laser light source, including several regular distribution's crossing line protection stake, the fixed device being set on several crossing line protection stake and the platform tour protection signal car moving on the top surface of fixed device.This platform safety protection sensor signal device based on high-precision laser light source, platform tour protection signal car moves above several crossing line protection stake, through drive device, constantly change the monitoring range of monitoring sensor, and through monitoring sensor, constantly multi-angle dynamic monitoring the people flow data on platform, improve the intelligent management of platform, cooperate with signal light, so that platform staff can handle potential safety hazard in time.

Description

Technical Field

[0001] This invention relates to the field of platform safety protection technology, and more specifically, to a platform safety protection sensor signal device based on a high-precision laser light source. Background Technology

[0002] Platform safety sensors are key devices for ensuring passenger safety. They sense the dynamics of people flow, accurately determine the position and direction of passengers when passing through platform screen doors, and convert light signals into electrical signals using the photoelectric effect. Once abnormal behavior is detected, the system will react quickly to effectively protect the personal safety of passengers.

[0003] Patent application number CN202121880853.0 discloses a platform crossing detection device, including a crossing detector, an external Fresnel lens covering the crossing detector, and a signal sensing circuit electrically connected to the crossing detector; the crossing detector is embedded in one or more safety line modules used to identify the electronic safety line of the platform; the signal sensing circuit is disposed within the safety line module; the crossing detector is used to detect the current position of passengers on the platform, and after detecting that a passenger has crossed the electronic safety line, it outputs a crossing detection signal to the signal sensing circuit; the signal sensing circuit is used to rectify and regulate the crossing detection signal.

[0004] The existing platform safety protection sensors mainly consist of several regularly distributed line-crossing protection devices, which rely solely on through-beam radar to monitor passenger line-crossing behavior. This method has a fixed and limited monitoring range, which may lead to the omission of abnormal situations in certain areas or angles. Potential safety hazards may not be detected and dealt with in a timely manner. At the same time, the line-crossing protection devices are prone to accumulating dust and dirt, affecting the accuracy of monitoring. They also require regular manual cleaning, which increases the difficulty and cost of maintenance.

[0005] In view of this, we propose a platform safety protection sensor signal device based on a high-precision laser light source. Summary of the Invention

[0006] The purpose of this invention is to provide a platform safety protection sensor signal device based on a high-precision laser light source to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A platform safety protection sensor signal device based on a high-precision laser light source includes several regularly distributed cross-line protection posts, a fixed device set on top of the cross-line protection posts, and a platform patrol protection signal vehicle that moves on the top surface of the fixed device. The cross-line protection posts include a windproof cover and several laser radars set on the outer wall of the windproof cover.

[0009] The over-line protection post also includes two fixed racks on the outer wall of the windproof cover, a cleaning part on the outside of the windproof cover, two traction ropes on the top surface of the cleaning part, and a limiting slider on the top of the traction ropes.

[0010] The cleaning unit includes a limiting bracket, a rotating roller disposed inside the limiting bracket, roller gears disposed at both ends of the rotating roller, and a cleaning brush sleeved on the outside of the rotating roller.

[0011] The fixing device includes a fixing horizontal plate and a support rod disposed on the top surface of the fixing horizontal plate and the windproof cover;

[0012] The platform patrol protection signal vehicle includes a mobile frame, a drive device installed inside the mobile frame, monitoring sensors installed at both ends of the drive device, a set of limiting parts installed on the bottom surface of the mobile frame, and signal lights fixed to the top surface of the mobile frame by bolts.

[0013] The driving device includes a drive motor, a rotating shaft that rotates with the output shaft of the drive motor, a drive wheel that rotates together with the rotating shaft, a dial at the end of the rotating shaft, a movable toothed plate that moves in conjunction with the dial, and a clamping part disposed on the outside of the movable toothed plate for fixing the monitoring sensor.

[0014] The limiting part includes a limiting slide rod, a limiting protrusion disposed at the bottom end of the limiting slide rod, and a pressure spring sleeved on the outside of the limiting slide rod.

[0015] In the technical solution of the present invention, the outer side wall of the windproof cover is provided with a cover groove on both sides of the lidar, and the outer side wall at both ends of the windproof cover is provided with a limiting sliding groove, and the fixing rack is snapped and fixed on the inner side groove wall of the cover groove.

[0016] In the technical solution of the present invention, the two ends of the limiting bracket are slidably connected to the inside of the limiting groove, the two ends of the rotating roller are rotatably connected to the inside of the limiting bracket, and the roller gear and the cleaning brush are fixedly connected to the outer side wall of the rotating roller by a locking pin.

[0017] In the technical solution of the present invention, the two ends of the traction rope are respectively heat-fused to the top surface of the limiting bracket and the outer wall of the limiting slider, and the longitudinal section of the limiting slider is inverted T-shaped and the top surface is provided with a limiting opening.

[0018] In the technical solution of the present invention, the top surface of the fixed horizontal plate is provided with a plate surface slot for providing a moving range for the limiting slider, the top surface of the fixed horizontal plate is provided with a plate surface slide rail between the two plate surface slots, the bottom end of the support rod is fixedly connected to the top surface of the windproof cover by bolts, and a guide pulley is snapped and fixed inside the plate surface slot.

[0019] In the technical solution of the present invention, a partition plate is welded and fixed on the inner side wall of the movable frame, and a bent frame plate is welded and fixed at the bottom of both ends of the movable frame, with the bottom surface of the bent frame plate abutting against the bent part of the top surface of the fixed horizontal plate.

[0020] In the technical solution of the present invention, the driving device further includes an outer sleeve bracket that provides a rotation base point for the rotating shaft, the driving motor is fixedly connected to the top surface of the movable frame by bolts, a worm gear is snapped and fixed at the end of the output shaft of the driving motor, and a worm gear that meshes with the worm gear is sleeved at the center position of the outer side wall of the rotating shaft.

[0021] In the technical solution of the present invention, the dial is snapped and fixed at the end position of the rotating shaft, and a disc protrusion is integrally formed on the outer side wall of the dial. The longitudinal section of the movable tooth plate is T-shaped and a plate groove is opened inside the longitudinal center rod. The movable tooth plate is slidably connected to the inner side wall of the movable frame.

[0022] In the technical solution of the present invention, the clamping part includes a mating gear that meshes with the movable toothed plate, a connecting rod integrally formed on the outer side wall of the mating gear, and a clamping frame snapped and fixed at the end position of the connecting rod. The connecting rod is rotatably connected to the inner side wall of the movable frame.

[0023] In the technical solution of the present invention, the limiting slide rod is slidably connected to the bottom surface of the partition plate, the bottom of the limiting protrusion abuts against the top surface of the fixed horizontal plate, the top end of the limiting slide rod is fixedly engaged with the limiting disc, the upper and lower ends of the pressure spring abut against the bottom surface of the partition plate and the top surface of the limiting protrusion respectively, and the pressure provided by the pressure spring pushes the limiting protrusion to move downward.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This platform safety protection sensor signal device based on a high-precision laser light source, when the platform patrol protection signal vehicle moves above several cross-line protection posts, continuously changes the monitoring range of the monitoring sensors through the drive device. The monitoring sensors continuously monitor the passenger flow data on the platform from multiple angles, improving the intelligent management of the platform. In conjunction with the signal lights, it enables platform staff to deal with potential safety hazards in a timely manner.

[0026] 2. This platform safety protection sensor signal device based on a high-precision laser light source allows the platform patrol protection signal vehicle to periodically pull the cleaning unit upwards on the outside of the windproof cover by using a limiting part in conjunction with a limiting slider, thereby reducing the input of cleaning personnel and avoiding the influence of dust and snow on the lidar. Attached Figure Description

[0027] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0028] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the cross-line protection pile in this invention;

[0030] Figure 4 For the present invention Figure 3 An enlarged schematic diagram of part A in the middle;

[0031] Figure 5 For the present invention Figure 3 Enlarged schematic diagram of part B;

[0032] Figure 6 This is a schematic diagram of the cleaning section in this invention;

[0033] Figure 7 This is a schematic diagram of the fixing device in this invention;

[0034] Figure 8 This is a cross-sectional schematic diagram of the platform patrol protection signal vehicle in this invention;

[0035] Figure 9 This is a schematic diagram of the drive device in this invention;

[0036] Figure 10 This is a partial structural schematic diagram of the driving device in this invention;

[0037] Figure 11 This is a schematic diagram of the movable toothed plate in this invention;

[0038] Figure 12 This is a schematic diagram of the clamping part in the present invention;

[0039] Figure 13 This is a schematic diagram of the limiting part in the present invention;

[0040] Explanation of reference numerals in the attached figures:

[0041] 100. Cross-line protection post; 110. Windproof cover; 111. Cover groove; 112. Limiting slide groove; 120. Fixed rack; 130. LiDAR; 140. Cleaning unit; 141. Limiting bracket; 142. Rotating roller; 143. Roller gear; 144. Cleaning brush; 150. Traction rope; 160. Limiting slider; 161. Limiting opening;

[0042] 200. Fixing device; 210. Fixing cross plate; 211. Plate surface groove; 212. Plate surface slide rail; 220. Support rod; 230. Guide pulley;

[0043] 300. Platform patrol and protection signal vehicle; 310. Moving frame; 311. Spacer plate; 312. Bending frame plate; 320. Drive device; 321. Drive motor; 322. Rotating shaft; 323. Drive wheel; 324. Worm gear; 325. Worm; 326. Dial; 3260. Dial protrusion; 327. Moving toothed plate; 3270. Plate groove; 328. Clamping part; 3280. Connecting gear; 3281. Connecting rod; 3282. Clamping frame; 329. Outer bracket; 330. Monitoring sensor; 340. Limiting part; 341. Limiting slide bar; 342. Limiting protrusion; 343. Limiting disc; 344. Pressure spring; 350. Signal light. Detailed Implementation

[0044] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0045] Please see Figures 1-13 As shown, this embodiment provides a technical solution:

[0046] A platform safety protection sensor signal device based on a high-precision laser light source includes a number of regularly distributed cross-line protection posts 100, a fixed device 200 installed above the cross-line protection posts 100, and a platform patrol protection signal vehicle 300 that moves on the top surface of the fixed device 200. The cross-line protection posts 100 include a windproof cover 110 and a number of laser radars 130 installed on the outer wall of the windproof cover 110.

[0047] In this embodiment, as Figures 3-6 As shown, the overpass protection post 100 also includes two fixed racks 120 disposed on the outer wall of the windproof cover 110, a cleaning part 140 disposed on the outer side of the windproof cover 110, two traction ropes 150 disposed on the top surface of the cleaning part 140, and a limiting slider 160 disposed on the top of the traction ropes 150.

[0048] Specifically, the cleaning unit 140 includes a limiting bracket 141, a rotating roller 142 disposed inside the limiting bracket 141, roller gears 143 disposed at both ends of the rotating roller 142, and a cleaning brush 144 sleeved on the outside of the rotating roller 142.

[0049] Furthermore, the outer side wall of the windproof cover 110 is provided with cover grooves 111 on both sides of the lidar 130, and the outer side wall of both ends of the windproof cover 110 is provided with limiting grooves 112, and the fixing rack 120 is snapped and fixed on the inner side wall of the cover groove 111.

[0050] Furthermore, the two ends of the limiting bracket 141 are slidably connected to the inside of the limiting groove 112, the two ends of the rotating roller 142 are rotatably connected to the inside of the limiting bracket 141, and the roller gear 143 and the cleaning brush 144 are fixedly connected to the outer wall of the rotating roller 142 by means of locking pins.

[0051] Furthermore, the two ends of the traction rope 150 are heat-fused to the top surface of the limiting bracket 141 and the outer wall of the limiting slider 160, respectively. The longitudinal section of the limiting slider 160 is inverted T-shaped and the top surface is provided with a limiting opening 161.

[0052] Furthermore, the windproof cover 110 ensures the stability of the crossing protection post 100 at the edge of the platform, the lidar 130 emits an invisible beam at the edge of the yellow line of the platform to monitor the crossing behavior of passengers, the cover groove 111 is used to increase the placement range of the fixed rack 120, and the limiting slide 112 is used to provide the movement range of the limiting bracket 141.

[0053] Furthermore, after the limit slider 160 is displaced, the traction rope 150 will pull the limit bracket 141 upward, causing the roller gear 143 to rotate after contacting the fixed rack 120, thereby allowing the rotating cleaning brush 144 to clean the outside of the windproof cover 110.

[0054] In this embodiment, as Figure 7 As shown, the fixing device 200 includes a fixing horizontal plate 210 and a support rod 220 disposed on the top surface of the fixing horizontal plate 210 and the windproof cover 110.

[0055] Specifically, the top surface of the fixed horizontal plate 210 is provided with a plate surface slot 211 for providing a moving range for the limiting slider 160. A plate surface slide rail 212 is provided between the two plate surface slots 211 on the top surface of the fixed horizontal plate 210. The bottom end of the support rod 220 is fixedly connected to the top surface of the windproof cover 110 by bolts. A guide pulley 230 is snapped and fixed inside the plate surface slot 211.

[0056] Furthermore, the fixed horizontal plate 210, together with the support rod 220, is used to ensure the overall structural strength of the fixing device 200. The slotted plate 211 is used to provide a movement range for the limiting slider 160. The slotted plate 211 is used to limit the movement range of the platform patrol protection signal vehicle 300. The guide pulley 230 is used to reduce the friction when the traction rope 150 moves.

[0057] In this embodiment, as Figures 8-13As shown, the platform patrol protection signal vehicle 300 includes a movable frame 310, a drive device 320 disposed inside the movable frame 310, monitoring sensors 330 disposed at both ends of the drive device 320, a set of limiting parts 340 disposed on the bottom surface of the movable frame 310, and signal lights 350 fixedly connected to the top surface of the movable frame 310 by bolts.

[0058] Specifically, a partition plate 311 is welded and fixed to the inner side wall of the movable frame 310, and a bent frame plate 312 is welded and fixed to the bottom of both ends of the movable frame 310. The bottom surface of the bent frame plate 312 abuts against the bent part of the top surface of the fixed horizontal plate 210.

[0059] Furthermore, the movable frame 310 provides a placement area for the drive unit 320 and the signal light 350, the partition plate 311 provides a placement platform for the limiting part 340, and the bent frame plate 312 is used to ensure the stability of the platform patrol protection signal vehicle 300 as a whole moving on the top surface of the fixed horizontal plate 210.

[0060] In this embodiment, as Figures 9-12 As shown, the drive device 320 includes a drive motor 321, a rotating shaft 322 that rotates with the output shaft of the drive motor 321, a drive wheel 323 that rotates together with the rotating shaft 322, a dial 326 disposed at the end of the rotating shaft 322, a movable toothed plate 327 that moves in conjunction with the dial 326, and a clamping part 328 disposed on the outside of the movable toothed plate 327 for fixing the monitoring sensor 330.

[0061] Specifically, the drive device 320 also includes an outer bracket 329 that provides a rotation base point for the rotating shaft 322. The drive motor 321 is fixedly connected to the top surface of the movable frame 310 by bolts. A worm gear 324 is snapped and fixed at the end of the output shaft of the drive motor 321. A worm 325 that meshes with the worm gear 324 is sleeved at the center of the outer side wall of the rotating shaft 322.

[0062] Furthermore, the dial 326 is snapped and fixed at the end of the rotating shaft 322. The outer wall of the dial 326 has an integrally formed disc protrusion 3260. The longitudinal section of the movable toothed plate 327 is T-shaped and the interior of the longitudinal center rod is provided with a plate groove 3270. The movable toothed plate 327 is slidably connected to the inner wall of the movable frame 310.

[0063] Furthermore, the clamping part 328 includes a mating gear 3280 that meshes with the movable toothed plate 327, a connecting rod 3281 integrally formed on the outer side wall of the mating gear 3280, and a clamping frame 3282 that is snapped and fixed at the end position of the connecting rod 3281. The connecting rod 3281 is rotatably connected to the inner side wall of the movable frame 310.

[0064] Furthermore, after the drive motor 321 starts, the worm gear 324 on the output shaft rotates. After the worm gear 324 abuts against the worm 325, it drives the rotating shaft 322 and the drive wheel 323 to rotate, thereby causing the entire platform patrol protection signal vehicle 300 to move above the fixed horizontal plate 210. During the rotation of the rotating shaft 322, the end dial 326 rotates, continuously changing the position of the dial protrusion 3260, and thus continuously changing the contact position with the plate groove 3270 in the moving toothed plate 327, thereby driving the moving toothed plate 327 to move back and forth. At the same time, the reciprocating moving toothed plate 327 drives the mating gear 3280 to rotate, and through the connecting rod 3281, it drives the clamping frame 3282 to swing back and forth, thereby continuously changing the projection angle of the monitoring sensor 330.

[0065] In this embodiment, as Figure 13 As shown, the limiting part 340 includes a limiting slide bar 341, a limiting protrusion 342 disposed at the bottom end of the limiting slide bar 341, and a pressure spring 344 sleeved on the outside of the limiting slide bar 341.

[0066] Specifically, the limiting slide rod 341 is slidably connected to the bottom surface of the partition plate 311, the bottom of the limiting protrusion 342 abuts against the top surface of the fixed horizontal plate 210, the top of the limiting slide rod 341 is locked and fixed to the limiting disc 343, the upper and lower ends of the pressure spring 344 abut against the bottom surface of the partition plate 311 and the top surface of the limiting protrusion 342 respectively, and the pressure provided by the pressure spring 344 pushes the limiting protrusion 342 to move downward.

[0067] Furthermore, during the movement of the platform patrol protection signal vehicle 300, the limiting protrusion 342 will extend into the limiting opening 161 on the top surface of the limiting slider 160 under the action of the pressure spring 344, thereby driving the limiting slider 160 to move within the slot 211 on the plate surface, and then pulling the cleaning part 140 upward as a whole through the traction rope 150. The limiting disc 343 is used to limit the sliding range of the limiting slider 341.

[0068] Finally, it should be noted that the lidar 130, drive motor 321, monitoring sensor 330, and signal light 350 involved in this invention are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, the lidar 130, drive motor 321, monitoring sensor 330, and signal light 350 are connected to an external power supply through wires. The specific connection method should refer to the working principle in this invention. The electrical connections between the various electrical components are completed in the order of their operation. The detailed connection methods are all technologies known in the art.

[0069] When using the platform safety protection sensor signal device based on a high-precision laser light source of the present invention, the laser radar 130 in the overpass protection pile 100 is first turned on, and several invisible beams are formed at the edge of the yellow line of the platform.

[0070] Next, the drive motor 321 in the platform patrol protection signal vehicle 300 is started, causing the worm gear 324 of the output shaft to rotate. After the worm gear 324 comes into contact with the worm 325, it drives the rotating shaft 322 and the drive wheel 323 to rotate, thereby causing the entire platform patrol protection signal vehicle 300 to move above the fixed horizontal plate 210.

[0071] During the rotation of the rotating shaft 322, the end dial 326 is driven to rotate, which continuously changes the position of the dial protrusion 3260, thereby continuously changing the contact position with the plate groove 3270 in the moving toothed plate 327, thus driving the moving toothed plate 327 to move back and forth.

[0072] At the same time, the reciprocating moving toothed plate 327 drives the docking gear 3280 to rotate, and the connecting rod 3281 drives the clamping frame 3282 to swing back and forth, thereby continuously changing the projection angle of the monitoring sensor 330.

[0073] During the movement of the platform patrol protection signal vehicle 300, the limiting protrusion 342 will extend into the limiting opening 161 on the top surface of the limiting slider 160 under the action of the pressure spring 344, thereby driving the limiting slider 160 to move within the slot 211 on the plate surface, and then pulling the cleaning section 140 upward as a whole through the traction rope 150.

[0074] As the cleaning unit 140 moves upward, the roller gear 143 rotates after contacting the fixed rack 120, which in turn drives the rotating roller 142 and the cleaning brush 144 to rotate together, thereby periodically cleaning the exterior of the windproof cover 110. When the limiting slider 160 moves to the end of the slot 211 on the plate, the limiting protrusion 342 separates from the limiting slider 160 under the action of tangential force, and the limiting bracket 141 falls back to the initial position under its own weight.

[0075] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A platform safety protection sensor signal device based on a high-precision laser light source, comprising a plurality of regularly distributed cross-line protection piles (100), a fixed device (200) disposed above the plurality of cross-line protection piles (100), and a platform patrol protection signal vehicle (300) that moves on the top surface of the fixed device (200). The cross-line protection piles (100) include a windproof cover (110) and a plurality of laser radars (130) disposed on the outer side wall of the windproof cover (110). Its features are: The overpass protection post (100) also includes two fixed racks (120) on the outer wall of the windproof cover (110), a cleaning part (140) on the outside of the windproof cover (110), two traction ropes (150) on the top surface of the cleaning part (140), and a limiting slider (160) on the top of the traction ropes (150). The longitudinal section of the limiting slider (160) is inverted T-shaped and a limiting opening (161) is opened on the top surface. The cleaning unit (140) includes a limiting bracket (141), a rotating roller (142) disposed inside the limiting bracket (141), roller gears (143) disposed at both ends of the rotating roller (142), and a cleaning brush (144) sleeved on the outside of the rotating roller (142). The fixing device (200) includes a fixing horizontal plate (210) and a support rod (220) disposed on the top surface of the fixing horizontal plate (210) and the windproof cover (110). The platform patrol protection signal vehicle (300) includes a movable frame (310), a drive device (320) installed inside the movable frame (310), monitoring sensors (330) installed at both ends of the drive device (320), a set of limiting parts (340) installed on the bottom surface of the movable frame (310), and signal lights (350) fixed to the top surface of the movable frame (310) by bolts. The drive device (320) includes a drive motor (321), a rotating shaft (322) that rotates with the output shaft of the drive motor (321), a drive wheel (323) that rotates together with the rotating shaft (322), a dial (326) disposed at the end of the rotating shaft (322), a movable toothed plate (327) that moves in conjunction with the dial (326), and a clamping part (328) disposed on the outside of the movable toothed plate (327) for fixing the monitoring sensor (330). The drive device (320) also includes an outer bracket (329) that provides a rotation base point for the rotating shaft (322). The drive motor (321) is fixedly connected to the top surface of the movable frame (310) by bolts. A worm gear (324) is snapped and fixed at the end of the output shaft of the drive motor (321). A worm (325) that meshes with the worm gear (324) is sleeved at the center of the outer side wall of the rotating shaft (322). The outer wall of the dial (326) is integrally formed with a disc body protrusion (3260), and the longitudinal section of the movable tooth plate (327) is T-shaped and the interior of the longitudinal center rod is provided with a plate body groove (3270). The clamping part (328) includes a mating gear (3280) that meshes with the movable toothed plate (327), a connecting rod (3281) integrally formed on the outer side wall of the mating gear (3280), and a clamping frame (3282) snapped and fixed at the end position of the connecting rod (3281). The connecting rod (3281) is rotatably connected to the inner side wall of the movable frame (310). The limiting part (340) includes a limiting slide rod (341), a limiting protrusion (342) disposed at the bottom end of the limiting slide rod (341), and a pressure spring (344) sleeved on the outside of the limiting slide rod (341). During the movement of the platform patrol protection signal vehicle (300), the limiting protrusion (342) will extend into the interior of the limiting opening (161) on the top surface of the limiting slider (160) under the action of the pressure spring (344).

2. The platform safety protection sensor signal device based on a high-precision laser light source according to claim 1, characterized in that: The outer side wall of the windproof cover (110) is provided with a cover groove (111) on both sides of the lidar (130). Limiting grooves (112) are provided on the outer side walls at both ends of the windproof cover (110). The fixing rack (120) is snapped and fixed on the inner side wall of the cover groove (111).

3. The platform safety protection sensor signal device based on a high-precision laser light source according to claim 1, characterized in that: The two ends of the limiting bracket (141) are slidably connected to the inside of the limiting groove (112), and the two ends of the rotating roller (142) are rotatably connected to the inside of the limiting bracket (141). The roller gear (143) and the cleaning brush (144) are fixedly connected to the outer wall of the rotating roller (142) by means of a locking pin.

4. The platform safety protection sensor signal device based on a high-precision laser light source according to claim 1, characterized in that: The two ends of the traction rope (150) are respectively heat-fused to the top surface of the limiting bracket (141) and the outer wall of the limiting slider (160).

5. The platform safety protection sensor signal device based on a high-precision laser light source according to claim 1, characterized in that: The top surface of the fixed horizontal plate (210) is provided with a plate surface slot (211) for providing a moving range for the limiting slider (160). The top surface of the fixed horizontal plate (210) is provided with a plate surface slide rail (212) between the two plate surface slots (211). The bottom end of the support rod (220) is fixedly connected to the top surface of the windproof cover (110) by bolts. The guide pulley (230) is snapped and fixed inside the plate surface slot (211).

6. The platform safety protection sensor signal device based on a high-precision laser light source according to claim 1, characterized in that: A partition plate (311) is welded and fixed on the inner side wall of the movable frame (310), and a bent frame plate (312) is welded and fixed at the bottom of both ends of the movable frame (310). The bottom surface of the bent frame plate (312) abuts against the bent part of the top surface of the fixed horizontal plate (210).

7. The platform safety protection sensor signal device based on a high-precision laser light source according to claim 1, characterized in that: The dial (326) is snapped and fixed at the end of the rotating shaft (322), and the movable toothed plate (327) is slidably connected to the inner wall of the movable frame (310).

8. The platform safety protection sensor signal device based on a high-precision laser light source according to claim 6, characterized in that: The limiting slide rod (341) is slidably connected to the bottom surface of the partition plate (311). The bottom of the limiting protrusion (342) abuts against the top surface of the fixed horizontal plate (210). The top end of the limiting slide rod (341) is fixedly engaged with the limiting disc (343). The upper and lower ends of the pressure spring (344) abut against the bottom surface of the partition plate (311) and the top surface of the limiting protrusion (342) respectively. The pressure provided by the pressure spring (344) pushes the limiting protrusion (342) to move downward.

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