A portable lighting device for elevator maintenance

Abstract

This invention discloses a portable lighting device for elevator maintenance, relating to the field of lighting technology. It includes: a lighting cart; a circular ring fixedly mounted on the top of the lighting cart; a rotating plate rotatably mounted on the inner wall of the circular ring; a segmented lifting platform disposed inside the lighting cart; and a lighting lamp disposed on the top of the segmented lifting platform. An L-shaped frame is fixedly mounted on the surface of the first segment of the segmented lifting platform, with pulleys rotatably mounted on the inner wall of the L-shaped frame. A fixing block is fixedly mounted on the inner wall of the circular ring, and a trapezoidal sliding plate is slidably mounted on the inner wall of the L-shaped frame. A push rod is fixedly mounted on the surface of the trapezoidal sliding plate. This invention solves the defect of ordinary vent valves that constantly allow air to pass through and instead absorb moisture, while retaining the function of venting and preventing condensation, significantly improving the reliability and service life of the lighting lamp in the harsh environment of the elevator shaft.

Description

Technical Field

[0001] This invention belongs to the field of lighting, specifically relating to a portable lighting device for elevator maintenance. Background Technology

[0002] Designed specifically for small, damp, dusty, and dimly lit environments such as elevator machine rooms, car tops, pits, and shafts, it meets the needs of elevator maintenance, repair, and emergency lighting.

[0003] Patent publication number CN205979527U relates to a movable lighting device for elevator maintenance, including a support plate with casters at the bottom and a battery pack at the top. A charging / discharging control board is connected to one end of the battery pack, enabling charging and discharging. A telescopic rod is connected to the upper end of the battery pack, and a lighting fixture is connected to the upper end of the telescopic rod via a connector. The lighting fixture is electrically connected to the battery pack, which supplies power. The connector is U-shaped with through holes on both side walls, the axes of which are aligned. The bottom of the connector is connected to the lighting fixture, and the opening of the connector engages with the upper end of the telescopic rod. A locking bolt passes through the through holes and the telescopic rod to connect the connector to the telescopic rod. Adjusting the tightness of the locking bolt allows rotation of the lighting fixture, facilitating adjustment of the lighting angle.

[0004] In the aforementioned patent, the connecting piece is connected to the telescopic rod by passing a locking bolt through a through hole and a telescopic rod. By adjusting the tightness of the locking bolt, the lighting fixture can be rotated to facilitate the adjustment of the lighting angle. However, when working in a dim and humid environment for a long time, moisture will enter the interior of the lighting fixture, causing fogging inside and affecting the brightness of the lighting fixture. At the same time, there is a lot of dust inside the elevator shaft, which will fall onto the surface of the lighting fixture, affecting the lighting effect. When lighting is on, the vibration generated by the operation of the adjacent elevator will cause the lighting vehicle to be unstable, and the shaking will cause the light to flicker, affecting the maintenance work of the workers. Summary of the Invention

[0005] In view of this, it is necessary to provide a portable lighting device for elevator maintenance to address the shortcomings of the existing technology, so as to solve the problem that moisture will enter the interior of the lighting lamp and cause fogging when working in a dark and humid environment for a long time.

[0006] To solve the above problems, this application adopts the following technical solution: One objective of this application is to provide a portable lighting device for elevator maintenance, comprising: a lighting cart; a circular ring fixedly mounted on the top of the lighting cart; a rotating plate rotatably mounted on the inner wall of the circular ring; a segmented lifting platform disposed inside the lighting cart; and a lighting lamp disposed on the top of the segmented lifting platform. An L-shaped frame is fixedly mounted on the surface of the first segment of the segmented lifting platform, with pulleys rotatably mounted on the inner wall of the L-shaped frame. A fixing block is fixedly mounted on the inner wall of the circular ring. A trapezoidal sliding plate is slidably mounted on the inner wall of the L-shaped frame, with a push rod fixedly mounted on the surface of the trapezoidal sliding plate. An L-shaped plate is slidably mounted on the top of the lighting lamp, and a vent valve is disposed on the top of the lighting lamp. A sealing sliding plate is slidably mounted on the surface of the vent valve. An L-shaped push plate is fixedly mounted on the top of the L-shaped plate, and a triangular block is fixedly mounted on the surface of the sealing sliding plate. The triangular block moves downwards, causing the sealing sliding plate to move downwards, releasing the seal on the vent valve. When the lighting lamp is reset after maintenance, the sealing sliding plate will reseal the vent valve.

[0007] In some embodiments, a first torsion spring is provided between the rotating plate and the ring, and the rotating plate is reset by the elastic force of the first torsion spring itself; a first spring is provided between the L-shaped frame and the trapezoidal slide plate, and the trapezoidal slide plate is reset by the elastic force of the first spring itself; a second spring is provided between the lighting lamp and the L-shaped plate, and the L-shaped plate is reset by the elastic force of the second spring itself; and a third spring is provided between the vent valve and the sealing slide plate, and the sealing slide plate is reset by the elastic force of the third spring itself.

[0008] In some embodiments, the lighting vehicle is equipped with a support device and an anti-tipping device for auxiliary support. The support device includes an L-shaped pulley frame, a fixed plate, a trapezoidal block, and a cleaning brush. The L-shaped pulley frame is fixedly installed on the top of the first section of the segmented lifting platform. The fixed plate is fixedly installed on the inner wall of the ring. The trapezoidal block is slidably installed on the bottom of the fixed plate. The cleaning brush is fixedly installed on the surface of the trapezoidal block so that when the second section of the segmented lifting platform moves upward, the surface of the lighting lamp contacts the cleaning brush.

[0009] In some embodiments, an L-shaped rack is fixedly mounted on the surface of the L-shaped frame, a gear is rotatably mounted on the inner wall of the lighting vehicle, and a toothed plate is slidably mounted on the inner wall of the lighting vehicle. The gear meshes with the L-shaped rack and the toothed plate. A sliding plate is fixedly mounted on the bottom of the toothed plate, a connecting plate is fixedly mounted on the bottom of the sliding plate, and a support plate is fixedly mounted on the bottom of the connecting plate. Subsequently, the gear pushes the toothed plate downward, and the downward movement of the toothed plate causes the sliding plate, the connecting plate, and the support plate to move downward.

[0010] In some embodiments, a No. 4 spring is provided between the trapezoidal block and the fixed plate, and the trapezoidal block is reset by the elastic force of the No. 4 spring itself. The L-shaped pulley bracket is located below the trapezoidal block.

[0011] In some embodiments, the anti-tipping device includes a fixed frame, a support frame, a connecting frame, and a short board. The connecting frame moves downward by the sliding plate, which in turn moves downward by the connecting frame. The downward movement of the connecting frame pushes the short board to rotate downward, and the downward rotation of the short board causes the support frame to rotate downward. The fixed frame is fixedly installed on the surface of the lighting vehicle, the support frame is rotatably installed on the inner wall of the fixed frame, the connecting frame is fixedly installed on the surface of the sliding plate, and the short board is fixedly installed on the surface of the support frame.

[0012] In some embodiments, a fixed seat is fixedly installed on the surface of the skateboard, a trapezoidal plate is slidably installed on the inner wall of the lighting vehicle, an L-shaped seat is fixedly installed on the surface of the trapezoidal plate, and a brake pad is fixedly installed on the surface of the L-shaped seat. When the trapezoidal plate moves away from the fixed seat, it will cause the L-shaped seat to move away from the fixed seat. When the L-shaped seat moves away from the fixed seat, it will cause the brake pad to contact the moving wheel of the lighting vehicle.

[0013] In some embodiments, a second torsion spring is provided between the support frame and the fixed frame, and the support frame is reset by the elastic force of the second torsion spring itself. A fifth spring is provided between the lighting vehicle and the trapezoidal plate, and the trapezoidal plate is reset by the elastic force of the fifth spring itself.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention uses a segmented lifting platform to reset the lighting fixture. Subsequently, the elasticity of the first torsion spring drives the rotating plate to reset, preventing moisture from entering the lighting fixture and reducing its lifespan. The vent valve promptly discharges the heat and internal moisture generated by the lighting fixture, lowering the lamp cavity temperature, reducing condensation, maintaining air pressure balance, and preventing the formation of negative pressure that draws in external moisture, thus reducing fogging at its source. At the same time, the downward movement of the triangular block causes the sealing slide plate to move downward, releasing the seal on the vent valve. When the lighting fixture is reset after maintenance, the sealing slide plate will reseal the vent valve, solving the defect of ordinary vent valves that allow air to pass through but instead absorb moisture. It retains the exhaust and anti-condensation function, significantly improving the reliability and lifespan of the lighting fixture in the harsh environment of the elevator shaft.

[0015] This invention involves the second segment of the segmented lifting platform moving upwards, causing the surface of the lighting lamp to come into contact with a cleaning brush. The cleaning brush removes dust from the surface of the lighting lamp, preventing dust from covering it and affecting the lighting effect. Then, the second segment of the lifting platform returns to its original position. During the return process, the cleaning brush does not come into contact with the lighting lamp, preventing repeated cleaning from causing severe scratches on the surface of the lighting lamp and affecting its lifespan. Finally, a support plate moves downwards to contact the ground for support, preventing the lighting lamp from shaking due to vibrations from the operation of the adjacent elevator during lighting, which would affect maintenance.

[0016] This invention provides support to both sides of the lighting vehicle by rotating the support frame downwards, preventing the vehicle from tipping over on uneven ground and affecting its stability. At the same time, the L-shaped seat moves away from the fixed seat, causing the brake pads to contact the moving wheels of the lighting vehicle. By restricting the lighting vehicle, it prevents it from moving on uneven ground, which could lead to the lighting lights being damaged, affecting normal use, and delaying maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present invention; Figure 2 This is a schematic diagram of the overall cross-section of an embodiment of the present invention; Figure 3 This is a schematic diagram of the cross-section of a circular ring in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the fixing plate and the trapezoidal block in one embodiment of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the sealing slide plate in one embodiment of the present invention; Figure 6 This is a schematic diagram of the cross-section of the lighting vehicle in one embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the skateboard and the fixed base in one embodiment of the present invention.

[0018] Explanation of key figure labels: 1. Lighting cart; 2. Ring; 3. Rotating plate; 4. Segmented lifting platform; 5. Lighting lamp; 6. L-shaped frame; 7. Pulley; 8. Fixing block; 9. Trapezoidal slide plate; 10. Push rod; 11. L-shaped plate; 12. Vent valve; 13. Sealing slide plate; 14. L-shaped push plate; 15. Triangular block; 161. L-shaped pulley frame; 162. Fixing plate; 163. Trapezoidal block; 164. Cleaning brush; 165. L-shaped rack; 166. Gear; 167. Tooth plate; 168. Slide plate; 169. Connecting plate; 1610. Support plate; 171. Fixing frame; 172. Support frame; 173. Connecting frame; 174. Short plate; 175. Fixing seat; 176. Trapezoidal plate; 177. L-shaped seat; 178. Brake pad. Detailed Implementation

[0019] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] like Figure 1 - Figure 4As shown, one embodiment of the present invention is: a movable lighting device for elevator maintenance, comprising: a lighting cart 1, a circular ring 2, the circular ring 2 being fixedly installed on the top of the lighting cart 1; a rotating plate 3, the rotating plate 3 being rotatably installed on the inner wall of the circular ring 2; a segmented lifting platform 4, the segmented lifting platform 4 being disposed inside the lighting cart 1; a lighting lamp 5, the lighting lamp 5 being disposed on the top of the segmented lifting platform 4; an L-shaped frame 6 being fixedly installed on the surface of the first segment of the segmented lifting platform 4, a pulley 7 being rotatably installed on the inner wall of the L-shaped frame 6, and a fixing block 8 being fixedly installed on the inner wall of the circular ring 2; the L-shaped frame 6... A trapezoidal slide plate 9 is slidably installed on the inner wall, and a push rod 10 is fixedly installed on the surface of the trapezoidal slide plate 9. An L-shaped plate 11 is slidably installed on the top of the lighting lamp 5. A vent valve 12 is set on the top of the lighting lamp 5. A sealing slide plate 13 is slidably installed on the surface of the vent valve 12. An L-shaped push plate 14 is fixedly installed on the top of the L-shaped plate 11. A triangular block 15 is fixedly installed on the surface of the sealing slide plate 13. This solves the defect of ordinary vent valve 12 which allows air to pass through but absorbs moisture instead. It retains the function of exhaust and anti-condensation, and greatly improves the reliability and service life of the lighting lamp 5 in the harsh environment of the elevator shaft.

[0021] A first torsion spring is installed between the rotating plate 3 and the ring 2. The rotating plate 3 is reset by the elastic force of the first torsion spring. A first spring is installed between the L-shaped frame 6 and the trapezoidal slide plate 9. The trapezoidal slide plate 9 is reset by the elastic force of the first spring. A second spring is installed between the lighting lamp 5 and the L-shaped plate 11. The L-shaped plate 11 is reset by the elastic force of the second spring. A third spring is installed between the vent valve 12 and the sealing slide plate 13. The sealing slide plate 13 is reset by the elastic force of the third spring.

[0022] In this embodiment, during operation: the first section of the segmented lifting platform 4 moves upward, driving the L-shaped frame 6 to move upward. The L-shaped frame 6 moves upward, driving the pulley 7 to move upward. The pulley 7 then pushes the rotating plate 3 to rotate upward. Subsequently, the second section of the segmented lifting platform 4 drives the lighting lamp 5 to move upward. When maintenance is completed, the segmented lifting platform 4 drives the lighting lamp 5 to reset. Then, the elasticity of the first torsion spring drives the rotating plate 3 to reset, preventing moisture from entering the lighting lamp and reducing the service life of the equipment. The heat and internal moisture generated by the lighting lamp 5 are discharged in time through the vent valve 12, reducing the lamp cavity temperature, reducing condensation, maintaining air pressure balance, and avoiding the formation of negative pressure that draws in external moisture, thus reducing fog generation at the source. At the same time, when the L-shaped frame 6 moves upward, it will drive the trapezoidal slide plate 9 to move upward. The trapezoidal slide plate 9 will contact the fixed block 8. The fixed block 8 will push the trapezoidal slide plate 9 and the push rod 10 to move closer to the vent valve 12. The push rod 10 moving closer to the vent valve 12 will push the L-shaped plate 11 and the L-shaped push plate 14 to move closer to the vent valve 12. The L-shaped push plate 14 will push the triangular block 15 to move downward. The downward movement of the triangular block 15 will drive the sealing slide plate 13 to move downward, thus releasing the seal on the vent valve 12. When the maintenance is completed and the lighting lamp 5 is reset, the sealing plate 13 will reseal the vent valve 12, solving the defect that ordinary vent valve 12 is constantly ventilating and thus absorbs moisture, retaining the exhaust and anti-condensation function, and greatly improving the reliability and service life of the lighting lamp 5 in the harsh environment of the elevator shaft.

[0023] Please see Figure 1 - Figure 7 Based on the above embodiments, in another embodiment of the present invention, the lighting vehicle 1 is provided with a support device and an anti-tipping device for auxiliary support. The support device includes an L-shaped pulley frame 161, a fixing plate 162, a trapezoidal block 163, and a cleaning brush 164. The L-shaped pulley frame 161 is fixedly installed on the top of the first section of the segmented lifting platform 4. The fixing plate 162 is fixedly installed on the inner wall of the ring 2. The trapezoidal block 163 is slidably installed on the bottom of the fixing plate 162. The cleaning brush 164 is fixedly installed on the surface of the trapezoidal block 163. The cleaning brush 164 cleans the dust on the surface of the lighting lamp 5 to prevent the dust from covering the lighting lamp 5 and affecting the lighting effect. At the same time, the cleaning brush 164 will not contact the lighting lamp 5 during the reset process to prevent the surface of the lighting lamp 5 from being severely scratched due to repeated cleaning and affecting the service life of the lighting lamp 5.

[0024] An L-shaped rack 165 is fixedly mounted on the surface of the L-shaped frame 6. A gear 166 is rotatably mounted on the inner wall of the lighting carriage 1. A toothed plate 167 is slidably mounted on the inner wall of the lighting carriage 1. The gear 166 meshes with the surfaces of the L-shaped rack 165 and the toothed plate 167. A sliding plate 168 is fixedly mounted on the bottom of the toothed plate 167. A connecting plate 169 is fixedly mounted on the bottom of the sliding plate 168. A support plate 1610 is fixedly mounted on the bottom of the connecting plate 169. The support plate 1610 moves downward to contact the ground for support, preventing the vibration generated by the operation of the adjacent elevator during lighting from causing the lighting lamp 5 to shake and affecting maintenance.

[0025] A No. 4 spring is provided between the trapezoidal block 163 and the fixed plate 162. The trapezoidal block 163 is reset by the elastic force of the No. 4 spring itself. The L-shaped pulley bracket 161 is located below the trapezoidal block 163.

[0026] In this embodiment, when the first section of the segmented lifting platform 4 moves upward, it drives the L-shaped pulley frame 161 to move upward. The upward movement of the L-shaped pulley frame 161 pushes the trapezoidal block 163 to move closer to the lighting lamp 5. The movement of the trapezoidal block 163 to move closer to the lighting lamp 5 drives the cleaning brush 164 to move closer to the lighting lamp 5. When the second section of the segmented lifting platform 4 moves upward, the surface of the lighting lamp 5 comes into contact with the cleaning brush 164. The cleaning brush 164 cleans the dust off the surface of the lighting lamp 5, preventing the dust from covering the lighting lamp 5 and affecting the lighting effect. Meanwhile, after the maintenance is completed, the first section of the segmented lifting platform 4 is reset, and then the trapezoidal block 163 is automatically reset after disengaging from the L-shaped pulley frame 161. Then, the second section of the segmented lifting platform 4 is reset. During the reset process, the cleaning brush 164 will not come into contact with the lighting lamp 5 to prevent the surface of the lighting lamp 5 from being severely scratched due to repeated cleaning, which would affect the service life of the lighting lamp 5. Simultaneously, the downward movement of the L-shaped frame 6 will cause the L-shaped rack 165 to move downward. The downward movement of the L-shaped rack 165 will drive the gear 166 to rotate. Subsequently, the gear 166 will push the toothed plate 167 to move downward. The downward movement of the toothed plate 167 will cause the sliding plate 168, the connecting plate 169, and the support plate 1610 to move downward. The support plate 1610 moves downward and contacts the ground for support, preventing the vibration generated by the operation of the adjacent elevator during the lighting process from causing the lighting lamp 5 to shake and affecting maintenance.

[0027] The anti-tipping device includes a fixed frame 171, a support frame 172, a connecting frame 173, and a short plate 174. The fixed frame 171 is fixedly installed on the surface of the lighting vehicle 1. The support frame 172 is rotatably installed on the inner wall of the fixed frame 171. The connecting frame 173 is fixedly installed on the surface of the sliding plate 168. The short plate 174 is fixedly installed on the surface of the support frame 172. When the support frame 172 rotates downward, it will support both sides of the lighting vehicle 1 to prevent the lighting vehicle 1 from tipping over when the ground is uneven, thus affecting the stability of the lighting vehicle 1.

[0028] A fixed seat 175 is fixedly installed on the surface of the skateboard 168. A trapezoidal plate 176 is slidably installed on the inner wall of the lighting cart 1. An L-shaped seat 177 is fixedly installed on the surface of the trapezoidal plate 176. A brake pad 178 is fixedly installed on the surface of the L-shaped seat 177. By restricting the lighting cart 1, it is prevented from moving when the ground is uneven, which would cause the lighting lamp 5 to be damaged, affecting normal use and delaying the maintenance progress.

[0029] A second torsion spring is provided between the support frame 172 and the fixed frame 171. The support frame 172 is reset by the elastic force of the second torsion spring. A fifth spring is provided between the lighting vehicle 1 and the trapezoidal plate 176. The trapezoidal plate 176 is reset by the elastic force of the fifth spring.

[0030] The downward movement of the sliding plate 168 causes the connecting frame 173 to move downward. The downward movement of the connecting frame 173 will push the short plate 174 to rotate downward. The downward rotation of the short plate 174 will cause the support frame 172 to rotate downward. The downward rotation of the support frame 172 will support both sides of the lighting vehicle 1 to prevent the lighting vehicle 1 from tipping over when the ground is uneven, thus affecting the stability of the lighting vehicle 1. At the same time, the downward movement of the skateboard 168 will cause the fixed seat 175 to move downward. The downward movement of the fixed seat 175 will push the trapezoidal plate 176 to move away from the fixed seat 175. The movement of the trapezoidal plate 176 away from the fixed seat 175 will cause the L-shaped seat 177 to move away from the fixed seat 175. The movement of the L-shaped seat 177 away from the fixed seat 175 will cause the brake pad 178 to contact the moving wheel of the lighting vehicle 1. By restricting the lighting vehicle 1, it is prevented that if the ground is uneven, the lighting vehicle 1 will move and cause the lighting lamp 5 to be damaged, affecting normal use and delaying the maintenance progress.

[0031] It is understood that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this interpretation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A portable lighting device for elevator maintenance, for a lighting device of an elevator shaft, comprising: The lighting vehicle (1) is characterized by: A circular ring (2) is fixedly installed on the top of the lighting vehicle (1); Rotating plate (3), which is rotatably mounted on the inner wall of the ring (2); The segmented lifting platform (4) is installed inside the lighting vehicle (1); Lighting lamp (5), the lighting lamp (5) is installed on the top of the segmented lifting platform (4); The first section of the segmented lifting platform (4) is fixedly mounted with an L-shaped frame (6). The inner wall of the L-shaped frame (6) is rotatably mounted with a pulley (7). The inner wall of the ring (2) is fixedly mounted with a fixing block (8). The inner wall of the L-shaped frame (6) is slidably mounted with a trapezoidal slide plate (9). The surface of the trapezoidal slide plate (9) is fixedly mounted with a push rod (10). The top of the lighting lamp (5) is slidably mounted with an L-shaped plate (11). The top of the lighting lamp (5) is provided with a vent valve (12). The surface of the vent valve (12) is slidably mounted with a sealing slide plate (13). The top of the L-shaped plate (11) is fixedly mounted with an L-shaped push plate (14). The surface of the sealing slide plate (13) is fixedly mounted with a triangular block (15). The lighting vehicle (1) is provided with a support device and an anti-tipping device for auxiliary support.

2. The portable lighting device for elevator maintenance according to claim 1, wherein A first torsion spring is provided between the rotating plate (3) and the ring (2), a first spring is provided between the L-shaped frame (6) and the trapezoidal slide plate (9), a second spring is provided between the lighting lamp (5) and the L-shaped plate (11), and a third spring is provided between the vent valve (12) and the sealing slide plate (13).

3. The portable lighting device for elevator maintenance according to claim 2, wherein The support device includes an L-shaped pulley frame (161), a fixed plate (162), a trapezoidal block (163), and a cleaning brush (164). The L-shaped pulley frame (161) is fixedly installed on the top of the first section of the segmented lifting platform (4). The fixed plate (162) is fixedly installed on the inner wall of the ring (2). The trapezoidal block (163) is slidably installed on the bottom of the fixed plate (162). The cleaning brush (164) is fixedly installed on the surface of the trapezoidal block (163).

4. The portable lighting device for elevator maintenance according to claim 3, wherein An L-shaped rack (165) is fixedly installed on the surface of the L-shaped frame (6). A gear (166) is rotatably installed on the inner wall of the lighting vehicle (1). A toothed plate (167) is slidably installed on the inner wall of the lighting vehicle (1). The gear (166) meshes with the L-shaped rack (165) and the toothed plate (167). A sliding plate (168) is fixedly installed at the bottom of the toothed plate (167). A connecting plate (169) is fixedly installed at the bottom of the sliding plate (168). A support plate (1610) is fixedly installed at the bottom of the connecting plate (169).

5. The portable lighting device for elevator maintenance according to claim 4, wherein A No. 4 spring is provided between the trapezoidal block (163) and the fixing plate (162), and the L-shaped pulley bracket (161) is located below the trapezoidal block (163).

6. A portable lighting device for elevator maintenance according to claim 5, characterized in that, The anti-tipping device includes a fixed frame (171), a support frame (172), a connecting frame (173), and a short plate (174). The fixed frame (171) is fixedly installed on the surface of the lighting vehicle (1). The support frame (172) is rotatably installed on the inner wall of the fixed frame (171). The connecting frame (173) is fixedly installed on the surface of the sliding plate (168). The short plate (174) is fixedly installed on the surface of the support frame (172).

7. A portable lighting device for elevator maintenance according to claim 6, characterized in that, A fixed seat (175) is fixedly installed on the surface of the skateboard (168), a trapezoidal plate (176) is slidably installed on the inner wall of the lighting vehicle (1), an L-shaped seat (177) is fixedly installed on the surface of the trapezoidal plate (176), and a brake pad (178) is fixedly installed on the surface of the L-shaped seat (177).

8. A portable lighting device for elevator maintenance according to claim 7, characterized in that, A second torsion spring is provided between the support frame (172) and the fixed frame (171), and a fifth spring is provided between the lighting vehicle (1) and the trapezoidal plate (176).

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