A tunnel lighting device

Abstract

The present invention discloses a tunnel lighting device, belonging to the technical field of lighting devices, which includes two groups of slide rails hoisted in the tunnel. A cross plate is slidably assembled at the bottom end of the slide rail, and lamps are installed below the cross plate. Sliders that are slidably matched with the slide rails are fixedly arranged on both sides of the top surface of the cross plate. A boss is fixedly installed on the top surface of the cross plate, and two protrusions are fixedly installed on the outer peripheral wall of the boss. One end face of the protrusion close to the slide rail is elastically connected with a positioning block, and a plurality of positioning grooves matched with the positioning block are uniformly opened on one side surface of the slide rail close to the protrusion; the winding rollers on multiple cross plates in this solution can descend in a gradient when passing through the pressure strip, so that the rotation radius of the connecting block gradually increases, which is beneficial to locking multiple groups of cross plates on the slide rail in a linear array in sequence.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting devices, and particularly relates to a tunnel lighting device. Background Art

[0002] A tunnel is an engineering structure buried in the ground, which is a form of human utilization of underground space.

[0003] Chinese Patent CN212057183U discloses a sliding and moving structure for a lighting lamp used in tunnel construction. Through a suspension rail, the lighting lamp can be moved into the top cover of the main body for fixation, so that the overall lighting range is increased, and it is convenient to fix the lighting lamp.

[0004] The above device installs the lighting lamp at the track, which is convenient for the movement and positioning of the lighting lamp. Existing tunnel lighting lamps also use the track method for positioning and installation. Without exception, workers are required to lock the lighting lamp with the track, making the overall installation process time-consuming. Especially when the lighting device needs to be installed on the top wall of the tunnel, this problem is particularly prominent. In summary, there is still room for improvement in existing tunnel lighting devices.

[0005] Therefore, it is necessary to provide a tunnel lighting device to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a tunnel lighting device to solve the problem that existing tunnel lighting lamps require workers to lock the lighting lamp with the track, making the overall installation process time-consuming as mentioned in the above background art.

[0007] Based on the above idea, the present invention provides the following technical solution: A tunnel lighting device includes two groups of sliding rails hoisted in the tunnel. A cross plate is slidably assembled at the bottom end of the sliding rail. A lamp is installed below the cross plate. Sliders slidably matched with the sliding rail are fixedly arranged on both sides of the top surface of the cross plate. A convex platform is fixedly installed on the top surface of the cross plate. Two protrusions are fixedly installed on the outer peripheral wall of the convex platform. One end face of the protrusion close to the sliding rail is elastically connected with a positioning block. A plurality of positioning grooves matched with the positioning block are evenly opened on one side surface of the sliding rail close to the protrusion. A winding component is arranged at the central position in the inner cavity of the convex platform. A positioning column for locking the positioning block is arranged on the protrusion;

[0008] The winding component is connected with the positioning column through a pull rope. An extrusion component matched with the winding component is arranged at the top wall inside the tunnel. When the winding components on each cross plate move along the length direction of the sliding rail and sequentially pass through the extrusion component, the extrusion component can drive each group of winding components to descend gradiently, so that the rotation radius of the end of the pull rope close to the winding component gradually increases.

[0009] As a further solution of the present invention: The winding assembly includes a rotating cylinder clamped to the top of the boss and rotatably cooperating with the boss. A winding roller is coaxially arranged inside the rotating cylinder. A conical surface is arranged on the outer wall of the winding roller, and two groups of connecting grooves are opened on the conical surface. A connecting block is slidably arranged in the connecting groove, and the pulling rope is fixedly arranged between the positioning column and the connecting block.

[0010] As a further solution of the present invention: The extrusion assembly includes a turntable arranged above the slide rail. An arc-shaped pressing strip is fixedly arranged at the bottom of the turntable. The bottom surface of the pressing strip is in a slope shape. A frustum-shaped top block is fixedly arranged at the top end surface of the winding roller. A convex ring is integrally formed at the center of the turntable, and a sliding rod is slidably arranged in the convex ring. A square rod is fixedly installed at the top wall inside the tunnel, and the bottom end of the square rod extends into the sliding rod and slidably cooperates with the sliding rod. A plurality of inclined grooves and straight grooves are uniformly opened on the inner wall of the convex ring, and the inclined grooves and the straight grooves are connected end to end. A limiting block is fixedly arranged on the outer peripheral wall of the sliding rod, and the limiting block can slide along the inclined grooves and the straight grooves. A guide plate is arranged at the bottom end of the inclined groove and at the junction with the straight groove. The guide plate is hinged to the convex ring, and the hinged position is on the side of the guide plate close to the inclined groove.

[0011] As a further solution of the present invention: A guide block is fixedly arranged on the outer wall of the winding roller and above the conical surface. A guide groove slidably cooperating with the guide block is opened on the inner wall of the rotating cylinder. One end surface of the guide block away from the winding roller is elastically connected with a plug-in block. A plug-in groove cooperating with the plug-in block is opened on the surface of the guide groove opposite to the guide block. One end surface of the plug-in block close to the plug-in groove is inclined. The winding roller and the cross plate are elastically cooperated through a limiting spring.

[0012] As a further solution of the present invention: A rack is fixedly installed on the inner wall of one of the slide rails, and a gear meshing with the rack is fixedly sleeved on the rotating cylinder.

[0013] As a further solution of the present invention: A groove is opened on the top surface of the cross plate. A T-shaped limiting column is fixedly arranged at the bottom end surface of the winding roller. The bottom end of the limiting column slides in the groove, and a support spring is fixedly arranged between the inner end surface of the groove and the limiting column.

[0014] As a further solution of the present invention: A plurality of baffle plates are arranged around the winding roller and close to the bottom end. The baffle plates are elastically cooperated with the cross plate. When the winding roller moves downward, the plurality of baffle plates can be extruded, and the connecting block slidably cooperates with the plurality of baffle plates around the winding roller.

[0015] As a further solution of the present invention: One side surface of the connecting block is flush with the conical surface.

[0016] As a further solution of the present invention: A notch cooperating with the positioning column is opened on the outer side surface of the positioning block.

[0017] As a further solution of the present invention: a strip-shaped groove slidably engaged with the positioning block is provided on the protrusion, and a spring is fixedly arranged between the inner end face of the strip-shaped groove and the positioning block.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: To sum up, the winding rollers on multiple cross plates in this solution can descend in a gradient when passing through the pressing strip, so that the rotation radius of the connecting block gradually increases, which is beneficial to locking multiple groups of cross plates on the slide rail in a linear array in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments:

[0020] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0021] Figure 2 is a schematic diagram of the cooperation between the slider and the slide rail of the present invention;

[0022] Figure 3 is a schematic diagram of the pressing strip structure of the present invention;

[0023] Figure 4 is a schematic diagram of the rack and the positioning groove structure of the present invention;

[0024] Figure 5 is a schematic diagram of the winding roller and the baffle structure of the present invention;

[0025] Figure 6 is a schematic diagram of the traction rope structure of the present invention;

[0026] Figure 7 is the present invention Figure 6 The enlarged structure diagram at A;

[0027] Figure 8 is a schematic diagram of the inclined groove and the straight groove structure of the present invention;

[0028] Figure 9 is a cross-sectional view of the winding roller and the rotating cylinder of the present invention;

[0029] Figure 10 is the present invention Figure 9 The enlarged structure diagram at B;

[0030] Figure 11 is the present invention Figure 9 The enlarged structure diagram at C;

[0031] Figure 12 is the present invention Figure 9 The enlarged structure diagram at D;

[0032] Figure 13Schematic diagram of the cover plate structure of the present invention;

[0033] Figure 14 Schematic diagram of the cooperation between the rib and the T-shaped groove of the present invention.

[0034] In the figure: 1, tunnel; 2, cross plate; 201, lamp; 202, clamping plate; 2021, elastic piece; 203, slider; 204, boss; 3, slide rail; 301, positioning groove; 302, rack; 4, towing rope; 401, sphere; 5, rotating cylinder; 6, winding roller; 601, top block; 602, conical surface; 603, limiting column; 604, guiding block; 6041, inserting block; 7, turntable; 701, pressing strip; 702, convex ring; 7021, inclined groove; 7022, straight groove; 703, connecting ring; 8, connecting plate; 9, sliding rod; 901, limiting block; 10, square rod; 11, protrusion; 1101, positioning block; 12, baffle plate; 1201, rib; 13, connecting block; 14, guiding plate; 15, pulling rope; 16, positioning column; 17, cover plate; 18, cross bar; 19, T-shaped groove; 20, winding wheel. Specific embodiments

[0035] As Figures 1 - 10 shown, a tunnel lighting device includes a slide rail 3 hoisted in the tunnel 1. In this solution, the number of slide rails 3 is set to two. A cross plate 2 is slidably assembled at the bottom end of the slide rail 3. During actual use, the lamp 201 is installed below the cross plate 2. Both sides of the top surface of the cross plate 2 are fixedly provided with sliders 203 that are slidably matched with the slide rail 3. Combining Figures 1 - 4 shown, a boss 204 is fixedly installed at the center of the top surface of the cross plate 2. The boss 204 is of an annular structure. Two protrusions 11 are fixedly installed on the outer peripheral wall of the boss 204. An end face of the protrusion 11 close to the slide rail 3 is elastically connected with a positioning block 1101. A plurality of positioning grooves 301 that are matched with the positioning block 1101 are evenly opened on one side surface of the slide rail 3 close to the protrusion 11. During specific installation, the slider 203 on the cross plate 2 is inserted into the slide rail 3 and the cross plate 2 is pushed to a specified position. Then, the position of the cross plate 2 can be locked through the cooperation between the positioning block 1101 and the positioning groove 301, thereby completing the installation of the lamp 201.

[0036] Although the above structure can quickly install the lamp 201, after the lamp 201 is moved to the corresponding position, the staff needs to lock the cross plate 2 and the slide rail 3. To avoid this problem, a winding component is arranged at the center of the inner cavity of the boss 204 in this solution. A positioning column 16 is arranged on the protrusion 11, and a notch matching the positioning column 16 is opened on the outer side surface of the positioning block 1101. In the initial state, one end of the positioning column 16 is inserted into the notch to lock the positioning column 16 and prevent the positioning column 16 from matching with the positioning groove 301 on the slide rail 3. The winding component is connected to the positioning column 16 through a pull rope 15. An extrusion component matching the winding component is arranged at the top wall inside the tunnel 1. The pull rope 15 has a certain length, and in the initial state, the pull rope 15 is in a relaxed state. When the winding components on each cross plate 2 move along the length direction of the slide rail 3 and pass through the extrusion component in sequence, the extrusion component can drive each group of winding components to descend in a gradient manner, so that the winding component can tighten the pull rope 15 and pull the positioning column 16 by rotating a small number of turns, so that the positioning block 1101 can pop out and cooperate with the positioning groove 301. Through this structure, each cross plate 2 can be positioned to the corresponding position and locked with the slide rail 3, thus avoiding manual locking of the cross plate 2.

[0037] As Figures 1 - 12 shown, the winding component includes a rotating cylinder 5 clamped at the top end of the boss 204 and rotatably matched with the boss 204. A winding roller 6 is coaxially arranged inside the rotating cylinder 5. Specifically, the outer side wall of the winding roller 6 at the lower part is set as a conical surface 602, and two connecting grooves are opened on the conical surface 602. A connecting block 13 is slidably arranged in the connecting groove, and the above pull rope 15 is fixedly arranged between the positioning column 16 and the connecting block 13;

[0038] To prevent the wound pull rope 15 from sliding on the conical surface 602, a plurality of baffle plates 12 are arranged around the winding roller 6 near the bottom end. The baffle plates 12 are elastically matched with the cross plate 2. When the winding roller 6 moves downward, the baffle plates 12 can be extruded, so as to prompt the baffle plates 12 to move away from the winding roller 6;

[0039] Refer to Figure 12As shown, the connecting block 13 and multiple baffles 12 on the periphery of the winding roller 6 can be slidably engaged. Specifically, T-shaped ridges 1201 are fixedly arranged on one side of the multiple baffles 12 close to the winding roller 6, and a T-shaped groove 19 that is slidably engaged with the ridges 1201 is formed on one side surface of the connecting block 13 close to the baffle 12. The connecting block 13 can be in a slidable engagement state with at least two groups of baffles 12 at the same time. In this way, the downward sliding of the pull rope 15 can be avoided during the process of the winding roller 6 winding the pull rope 15. The side surface of the connecting block 13 close to the baffle 12 is flush with the conical surface 602, so that when the winding roller 6 moves downward, it can simultaneously squeeze multiple groups of baffles 12 and drive the multiple groups of baffles 12 to move outward.

[0040] The above-mentioned extrusion assembly includes a turntable 7 arranged above the slide rail 3 and at the end of the slide rail 3. An arc-shaped pressing strip 701 is fixedly arranged at the bottom of the turntable 7. Refer to Figure 3 As shown, the bottom surface of the pressing strip 701 is set to be ramp-shaped (that is, the two ends of the pressing strip 701 are at different heights), and a frustum-shaped top block 601 is fixedly arranged on the top end surface of the winding roller 6. When the turntable 7 rotates a certain angle, the winding roller 6 can be driven to descend different distances by the extrusion of the pressing strip 701 on the top block 601. A convex ring 702 is integrally formed at the center of the turntable 7, and a slide rod 9 is slidably arranged in the convex ring 702. A square rod 10 (that is, the cross-section of the square rod 10 is rectangular) is fixedly installed on the inner top wall of the tunnel 1. The bottom end of the square rod 10 extends into the slide rod 9 and is slidably engaged with the slide rod 9. Combining Figures 7 - 8As shown in the figure, a plurality of groups of inclined grooves 7021 and straight grooves 7022 are evenly formed in the inner wall of the convex ring 702, and the inclined grooves 7021 and the straight grooves 7022 are connected end to end. A limiting block 901 is fixedly arranged on the outer peripheral wall of the sliding rod 9, and the limiting block 901 can slide cyclically along the inclined grooves 7021 and the straight grooves 7022. A guide plate 14 is arranged at the bottom end of the inclined groove 7021 and at the junction with the straight groove 7022. The guide plate 14 is hinged to the convex ring 702, and the hinge position is on the side of the guide plate 14 close to the inclined groove 7021. In this way, the guide plate 14 in the initial state can only deflect towards the direction close to the inclined groove 7021. The guide plate 14 is elastically matched with the convex ring 702. Specifically, a tension spring can be arranged between the top surface of the guide plate 14 and the side wall of the straight groove 7022 close to the guide plate 14 to realize the elastic connection between the guide plate 14 and the convex ring 702. During the process that the top block 601 passes through the sliding rod 9, the top block 601 can lift the sliding rod 9, so that the limiting block 901 can move upward along the inclined groove 7021. The cooperation between the limiting block 901 and the inclined groove 7021 can drive the turntable 7 to rotate. When the sliding rod 9 drops, the limiting block 901 can move downward along the straight groove 7022 and cross over the guide plate 14, so that the limiting block 901 is completely placed in the straight groove 7022. When the next top block 601 lifts the sliding rod 9 again, the limiting block 901 can enter the inclined groove 7021 through the guide plate 14.

[0041] In order to position the winding roller 6, a guide block 604 is fixedly arranged on the outer wall of the winding roller 6 and above the conical surface 602, and a guide groove slidably matched with the guide block 604 is formed in the inner wall of the rotating cylinder 5. Through this structure, the rotating cylinder 5 can drive the winding roller 6 to rotate synchronously. One end face of the guide block 604 far away from the winding roller 6 is elastically connected with a plug-in block 6041, and a plug-in groove matched with the plug-in block 6041 is formed on the surface of the guide groove opposite to the guide block 604. Figure 10 As shown in the figure, one end face of the plug-in block 6041 close to the plug-in groove is inclined, so that the plug-in block 6041 can only move downward relative to the plug-in groove. The winding roller 6 and the cross plate 2 are elastically matched through a limiting spring.

[0042] In order to drive the rotating cylinder 5 to rotate, a rack 302 is fixedly installed on the inner wall of one of the slide rails 3, and a gear meshing with the rack 302 is fixedly sleeved on the rotating cylinder 5.

[0043] During actual use, place the cross plate 2 at the end of the slide rail 3 so that the slider 203 is inserted into the slide rail 3. Push the slider 203 to move along the slide rail 3. In the initial state, through the locking of the positioning post 16 on the positioning block 1101, it is possible to prevent the positioning block 1101 from popping out and mating with the positioning groove 301. During the process of the whole device moving along the slide rail 3, the top block 601 on the top of the winding roller 6 will first contact the slide bar 9 and drive the slide bar 9 to move upward. According to the above description, during this process, the limiting block 901 can slide along the inclined groove 7021 and drive the turntable 7 to rotate, and the turntable 7 can drive the pressing strip 701 at its bottom to rotate synchronously. When the top block 601 passes over the slide bar 9 and causes the slide bar 9 to fall, the limiting block 901 can slide down into the straight groove 7022, and the cooperation between the limiting block 901 and the straight groove 7022 can keep the turntable 7 stable;

[0044] As the whole device continues to move, the top block 601 will move to the pressing strip 701. Through the pressure of the pressing strip 701 on the top block 601, it can prompt the winding roller 6 to move downward relative to the cross plate 2 against the acting force of the limiting spring. Through the cooperation between the plug-in block 6041 and the plug-in slot, it is possible to prevent the winding roller 6 from rebounding. During the process of the winding roller 6 moving downward, through the conical surface 602, it can drive a plurality of groups of baffles 12 on its periphery to move outward, and the connecting block 13 moves upward along the connecting groove relative to the winding roller 6. Due to the setting of the conical surface 602, when the connecting block 13 moves upward along the connecting groove, the rotation radius of the connecting block 13 will increase. When the top block 601 passes over the pressing strip 701 and continues to move, through the meshing of the gear and the rack 302, it can drive the rotating cylinder 5 to rotate, so as to drive the winding roller 6 to rotate through the rotating cylinder 5 and wind the pulling rope 15. When the cross plate 2 moves to the corresponding position, the winding roller 6 completely winds up the pulling rope 15 and tightens the pulling rope 15, so that the pulling rope 15 can pull the positioning post 16. When one end of the positioning post 16 is separated from the positioning block 1101, the positioning block 1101 can pop out and cooperate with the positioning groove 301 on the inner side of the slide rail 3 to lock the cross plate 2 and the slide rail 3;

[0045] Similarly, when the second crossbar 2 loaded with the lamp 201 is assembled onto the slide rail 3 and moves along the slide rail 3, the cooperation between the top block 601 and the slide rod 9 can drive the turntable 7 to rotate again. Since the bottom surface of the pressing strip 701 is sloped, when the top block 601 passes over the pressing strip 701, it will be further squeezed downward, so that the winding roller 6 on this crossbar 2 can move downward a longer distance than the winding roller 6 on the previous crossbar 2, resulting in a larger rotation radius of the connecting block 13 on the conical surface 602. Therefore, when this crossbar 2 moves near the previous crossbar 2, the winding roller 6 will tighten the pulling rope 15 and cause the positioning block 1101 to pop out. To sum up, the winding rollers 6 on multiple crossbars 2 in this solution can descend in a gradient when passing over the pressing strip 701, so that the rotation radius of the connecting block 13 gradually increases, which is beneficial to locking multiple groups of crossbars 2 on the slide rail 3 in a linear array in sequence.

[0046] As Figures 1 - 10 shown, the slide rail 3 is fixedly connected to the top wall of the tunnel 1 through a suspension rod. To drive the whole device to move along the slide rail 3, a pulling rope 4 is arranged on the top of the slide rail 3 in this solution. Motors are respectively installed at both ends of the tunnel 1, and the output ends of the motors can be drivingly connected to the winding wheels 20, and the pulling rope 4 is wound around the winding wheels 20 and fixedly connected thereto. Pulleys can be installed at the ends of the tunnel 1 so that the pulling rope 4 passes through the pulleys;

[0047] Combined with Figure 4 shown, a plurality of spheres 401 are fixedly sleeved on the pulling rope 4. A "7"-shaped clamping plate 202 is fixedly arranged on the outer side surface of the crossbar 2. An installation groove is formed on the top surface of the clamping plate 202, and arc-shaped elastic pieces 2021 are fixedly arranged on both sides inside the installation groove. After the slider 203 is inserted into the slide rail 3, the staff can place the pulling rope 4 between the two elastic pieces 2021. During use, one motor winds the pulling rope 4, and the other motor unwinds the pulling rope 4 to drive the pulling rope 4 to move. When the sphere 401 is clamped between the two elastic pieces 2021, it can drive the crossbar 2 to move along the slide rail 3. When the crossbar 2 moves to the corresponding position, the positioning block 1101 can be clamped with the positioning groove 301. At this time, as the pulling rope 4 continues to move, the sphere 401 can squeeze the elastic piece 2021 and cause the elastic piece 2021 to deform, so that the sphere 401 can pass through between the two elastic pieces 2021.

[0048] A ring-shaped connecting plate 8 is fixedly arranged on the top wall of the tunnel 1, and a connecting ring 703 is fixedly arranged on the top surface of the turntable 7. The connecting ring 703 is arranged inside the connecting plate 8 and is rotationally matched with the connecting plate 8 through a bearing.

[0049] A groove is formed on the top surface of the cross plate 2, and a T-shaped limit post 603 is fixedly arranged at the bottom end face of the wire winding roller 6. The bottom end of the limit post 603 slides in the groove, and a support spring is fixedly arranged between the inner end face of the groove and the limit post 603.

[0050] In order to achieve the elastic connection between the baffle 12 and the cross plate 2, a sliding groove for sliding cooperation with the baffle 12 is formed on the top surface of the cross plate 2, and a cross bar 18 is fixedly arranged in the sliding groove. The cross bar 18 passes through the baffle 12 and is in sliding cooperation with it. A first spring is sleeved outside the cross bar 18, and the first spring is fixedly arranged between the baffle 12 and the end face of the sliding groove.

[0051] A rectangular groove for cooperating with the plug-in block 6041 is formed on the guide block 604, and a second spring is fixedly arranged between the inner end face of the rectangular groove and the plug-in block 6041.

[0052] A strip-shaped groove for sliding cooperation with the positioning block 1101 is formed on the protrusion 11, and a spring is fixedly arranged between the inner end face of the strip-shaped groove and the positioning block 1101. A guide hole for sliding cooperation with the positioning post 16 is formed at the top wall inside the strip-shaped groove. The above-mentioned pull rope 15 passes through the protrusion 11 and the convex platform 204 and is in sliding cooperation with both, and a storage groove for storing the pull rope 15 is arranged on the protrusion 11.

[0053] Refer to Figure 4 、 Figure 13 As shown in the figure, after the traction rope 4 is placed between the two elastic pieces 2021, the staff can install a cover plate 17 on the top of the clamping plate 202 by means of bolt connection, so as to prevent the traction rope 4 from detaching from the clamping plate 202.

[0054] In actual use, the cross plate 2 and the slider 203 can be fixedly connected by bolts. A conductive bar can be installed on the top wall of the inner cavity of the slide rail 3, and a contact piece for cooperating with the conductive bar can be arranged on the top surface of the slider 203, so as to supply power to the lamp 201. Since it is a mature technical means in the electrical field, it will not be elaborated here.

Claims

1. A tunnel lighting device, comprising two groups of sliding rails hoisted in the tunnel. A cross plate is slidably assembled at the bottom end of the sliding rail, and lamps are installed below the cross plate. Sliders slidably matched with the sliding rails are fixedly arranged on both sides of the top surface of the cross plate. A boss is fixedly installed on the top surface of the cross plate, and two protrusions are fixedly installed on the outer peripheral wall of the boss. A positioning block is elastically connected to the end surface of one end of the protrusion close to the sliding rail. A plurality of positioning grooves matched with the positioning block are evenly formed on one side surface of the sliding rail close to the protrusion. It is characterized in that: A winding component is arranged at the center of the inner cavity of the boss, and a positioning post for locking the positioning block is arranged on the protrusion; The winding component is connected to the positioning post by a pulling rope. An extrusion component matched with the winding component is arranged at the top wall inside the tunnel. When the winding components on each cross plate move along the length direction of the slide rail and sequentially pass through the extrusion component, the extrusion component can drive each group of winding components to descend in a gradient manner, so that the rotation radius of the end of the pulling rope close to the winding component gradually increases; The winding component includes a rotating cylinder clamped at the top end of the boss and rotatably matched with the boss. A winding roller is coaxially arranged inside the rotating cylinder. A conical surface is arranged on the outer wall of the winding roller, and two groups of connecting grooves are arranged on the conical surface. A connecting block is slidably arranged in the connecting groove. The pulling rope is fixedly arranged between the positioning post and the connecting block. A rack is fixedly installed on the inner wall of one of the slide rails, and a gear meshed with the rack is fixedly sleeved on the rotating cylinder; The extrusion component includes a turntable arranged above the slide rail. An arc-shaped pressing strip is fixedly arranged at the bottom of the turntable. The bottom surface of the pressing strip is in a slope shape. A round table-shaped top block is fixedly arranged at the top end face of the winding roller. A convex ring is integrally formed at the center of the turntable, and a sliding rod is slidably arranged in the convex ring. A square rod is fixedly installed at the top wall inside the tunnel, and the bottom end of the square rod extends into the sliding rod and is slidably matched with the sliding rod. A plurality of inclined grooves and straight grooves are uniformly arranged on the inner wall of the convex ring, and the inclined grooves and the straight grooves are connected end to end. A limiting block is fixedly arranged on the outer peripheral wall of the sliding rod, and the limiting block can slide along the inclined grooves and the straight grooves. A guide plate is arranged at the bottom end of the inclined groove and at the junction with the straight groove. The guide plate is hinged to the convex ring, and the hinged position is on the side of the guide plate close to the inclined groove.

2. The tunnel lighting device according to claim 1, characterized in that: A guide block is fixedly arranged on the outer wall of the winding roller and above the conical surface. A guide groove slidably matched with the guide block is arranged on the inner wall of the rotating cylinder. The end face of the guide block far from the winding roller is elastically connected with a plug block. A plug slot matched with the plug block is arranged on the surface of the guide groove opposite to the guide block. The end face of the plug block close to the plug slot is inclined. The winding roller and the cross plate are elastically matched by a limiting spring.

3. The tunnel lighting device according to claim 1, wherein: A groove is opened on the top surface of the cross plate. A T-shaped limiting post is fixedly arranged at the bottom end face of the winding roller. The bottom end of the limiting post slides in the groove, and a support spring is fixedly arranged between the inner end face of the groove and the limiting post.

4. A tunnel lighting device according to claim 1, characterized in that: A plurality of baffle plates are arranged around the winding roller and close to the bottom end. The baffle plates are elastically matched with the cross plate. When the winding roller moves downward, the plurality of baffle plates can be extruded. The connecting block is slidably matched with the plurality of baffle plates around the winding roller.

5. The tunnel lighting device according to claim 4, characterized in that: One side surface of the connecting block is flush with the conical surface.

6. The tunnel lighting device according to claim 1, wherein: A notch matched with the positioning post is opened on the outer side surface of the positioning block.

7. A tunnel lighting device according to claim 1, characterized in that: A strip-shaped groove slidably matched with the positioning block is opened on the protrusion, and a spring is fixedly arranged between the inner end face of the strip-shaped groove and the positioning block.

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