A tunnel inspection track docking system

Abstract

The application relates to a tunnel inspection track docking system, which comprises a lifting platform ladder, a lifting platform body, mounting plates and roller assemblies. The top surface of the lifting platform body is provided with one mounting plate at each end. The two mounting plates are slidingly arranged on the top surface of the lifting platform body and can be locked and fixed at the set positions. Each mounting plate is provided with at least one group of roller assemblies, and the roller assemblies on the two mounting plates are symmetrically arranged. The two mounting plates are arranged on the two sides of the lifting platform ladder respectively, the roller assemblies on the two mounting plates are rollingly connected to the two vertical beams of the lifting platform ladder respectively, and the lifting platform body is located on the side of the lifting platform ladder away from the tunnel wall. By slidingly arranging the two mounting plates on the lifting platform body, the relative positions between the two mounting plates can be adjusted, and then the two roller assemblies on the lifting platform body can be stably clamped on the lifting platform ladder, the structural features of different sections of the lifting platform ladder can be adapted, and the running of the lifting platform body on the lifting platform ladder is stable and reliable.

Description

Technical Field

[0001] This invention relates to the field of track docking technology, specifically to a track docking system for tunnel inspection. Background Technology

[0002] Ladders are installed in tunnels for lifting platforms to enable track docking. However, existing lifting platform ladders are prone to jamming or instability during lifting, and lack positioning monitoring capabilities. Furthermore, existing lifting platforms for track docking cannot adjust the angle of the connected straight track, hindering effective docking with inspection tracks. The platforms are also unstable during lifting, prone to jamming. Summary of the Invention

[0003] In order to solve one or more technical problems existing in the prior art, the present invention provides a track docking system for tunnel inspection.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: a track docking system for tunnel inspection, including a lifting platform ladder, a lifting platform body, mounting plates and roller assemblies. Each end of the top surface of the lifting platform body is provided with a mounting plate. The two mounting plates are slidably disposed on the top surface of the lifting platform body and can be locked and fixed in a set position. Each mounting plate is provided with at least one set of roller assemblies. The roller assemblies on the two mounting plates are symmetrically arranged.

[0005] The two mounting plates are respectively disposed on both sides of the lifting platform ladder, and the roller assemblies on the two mounting plates are respectively rotatably connected to the two vertical beams of the lifting platform ladder. The lifting platform body is located on the side of the lifting platform ladder away from the tunnel wall.

[0006] The beneficial effects of this invention are: This invention is used in a tunnel inspection track docking system. By sliding two mounting plates on the lifting platform body, the relative position between the two mounting plates can be adjusted, thereby enabling the two roller assemblies on the lifting platform body to be stably engaged with the lifting platform ladder. This allows the invention to adapt to the structural features of different sections of the lifting platform ladder, making the operation of the lifting platform body on the lifting platform ladder more stable and reliable.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the lifting platform ladder includes multiple integrally connected straight ladder segments and multiple curved ladder segments, with adjacent straight ladder segments connected by curved ladder segments. Each straight ladder segment includes a first crossbeam, and each curved ladder segment includes a second crossbeam. A drive unit is installed on the lowest first crossbeam of a bottom straight ladder segment, and a first drive sprocket is installed at the output end of the drive unit. Tension sprockets are installed on the first crossbeams in the middle of other straight ladder segments, and a second drive sprocket is installed on the first crossbeam at the end of a top straight ladder segment. A guide sprocket assembly and a tension sprocket are installed on the second crossbeam. A drive chain is fitted onto the first and second drive sprockets, and the tension sprocket engages with the inner side of the drive chain for tensioning. The guide sprocket assembly engages with the drive chain for guidance. The drive chain located at the front of the straight and curved ladder segments is connected to the top surface of the lifting platform.

[0009] The beneficial effects of adopting the above-mentioned further solution are: by setting multiple straight-section ladder bodies and multiple curved-section ladder bodies, it can be adapted to the shape of the tunnel, which facilitates the assembly of the entire lifting platform ladder; by setting tension sprockets and guide sprocket assemblies, the drive chain can be reasonably arranged along the lifting platform ladder, which can enable the lifting platform to rise and fall smoothly under the drive of the drive chain, avoiding phenomena such as jamming or unstable lifting.

[0010] Furthermore, the guide sprocket assembly includes a first guide sprocket and a second guide sprocket. The first guide sprocket engages with the inner side of the drive chain on the back side of the arc-shaped ladder body for guidance, and the second guide sprocket engages with the outer side of the drive chain on the front side of the arc-shaped ladder body for guidance.

[0011] Furthermore, the arc-shaped ladder body includes two second crossbeams, which are located at the connection points between the arc-shaped ladder body and two adjacent straight ladder bodies. The first guide sprocket is mounted on one of the second crossbeams via a first mounting plate and is located on the rear side between the two second crossbeams. There are two second guide sprockets, which are mounted on the two second crossbeams via second mounting plates, and the two second guide sprockets are located on the front side of the two second crossbeams.

[0012] The beneficial effect of adopting the above-mentioned further solution is that using two second guide sprockets can provide better guidance and support for the drive chain.

[0013] Furthermore, an L-shaped connecting plate is provided on the drive chain located on the front side of the straight section ladder body and the curved section ladder body. One end of the L-shaped connecting plate is vertically fixed to one side of the drive chain, and the other end of the L-shaped connecting plate is connected to the top surface of the lifting platform body and extends towards the front side of the drive chain.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the use of L-shaped connecting plates can further avoid interference between the lifting platform and the lifting platform ladder structure.

[0015] Furthermore, the lifting platform ladder also includes a first limit switch and a second limit switch. The first limit switch is installed on the first crossbeam at the bottom of a straight section of the ladder body located at the bottom, and the second limit switch is installed on the first crossbeam at the end of a straight section of the ladder body located at the top.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the setting of the first limit switch and the second limit switch can realize the start and stop control of the lifting platform.

[0017] Furthermore, the bottom surface of the lifting platform body is provided with multiple second connecting plates and multiple adjusting plates. One end of each of the multiple second connecting plates is vertically fixed to the bottom surface of the lifting platform body. One end of each of the multiple adjusting plates is connected to the other end of the multiple second connecting plates, and the other end of each adjusting plate is a linear track connection end. One end of each adjusting plate is connected to the other end of each second connecting plate by connecting bolts. One end of each adjusting plate is also provided with an arc-shaped adjusting hole, which is arranged around the connecting bolt as the center. The other end of each second connecting plate is also provided with a positioning hole, which is arranged correspondingly to the arc-shaped adjusting hole. The positioning hole and the arc-shaped adjusting hole are locked and positioned by positioning bolts.

[0018] The beneficial effects of adopting the above-mentioned further solution are: the second connecting plate and the adjusting plate are connected by connecting bolts, and the angle can be adjusted by the arc-shaped adjusting hole. After adjustment, the positioning bolts are used to lock and position the plate. The angle of the connected linear track can be adjusted as needed, and effective docking with the inspection track can be achieved.

[0019] Furthermore, the second connecting plate is provided with a clamping plate, the clamping plate is provided with a clamping screw, and one end face of the adjusting plate is provided with a clamping protrusion, the clamping screw and the clamping protrusion are adapted to abut against each other;

[0020] The second connecting plate is provided with a clamping plate on each of its front and rear sides. The two clamping plates extend to the left or right side of the second connecting plate, respectively. Each of the extension sections of the two clamping plates is provided with a clamping screw. The two clamping screws are arranged opposite to each other, and the clamping protrusion is located between the two clamping screws.

[0021] The beneficial effect of adopting the above-mentioned further solution is that by setting the tightening screw, the tightening and positioning of the tightening protrusion can be achieved, which further strengthens the angle positioning of the second connecting plate and the adjusting plate after adjustment.

[0022] Furthermore, the roller assembly includes a roller bracket, a first roller, and a second roller. The roller bracket has a V-shaped structure and includes two symmetrically arranged support arms. A third connecting plate is provided on the outer side wall of the connection between the two support arms of the roller bracket. The third connecting plate is fixed to one side of the mounting plate and is arranged perpendicular to the line of symmetry of the roller bracket. Each end of the roller bracket is provided with a first roller, and the central axis of the two first rollers is arranged parallel to the line of symmetry of the roller bracket. A second roller is provided between the two support arms of the roller bracket. The second roller is connected to the two support arms of the roller bracket through a connecting shaft, which is arranged perpendicular to the line of symmetry of the roller bracket. The two first rollers are respectively rolledly connected to the front and rear sides of the vertical beam of the lifting platform ladder, and the second roller is rolledly connected to the left or right side of the vertical beam of the lifting platform ladder.

[0023] The beneficial effect of adopting the above-mentioned further solution is that by setting a V-shaped roller bracket and installing a first roller and a second roller on the roller bracket, the lifting platform ladder can be effectively clamped, avoiding instability during the lifting and moving process.

[0024] Furthermore, one end of the mounting plate is provided with a sliding plate, which is slidably disposed on the top surface of the lifting platform body and can be locked and fixed to the lifting platform body by the first locking member;

[0025] The top surface of the lifting platform body is also slidably provided with a limiting block. There are two limiting blocks located between two mounting plates. Each mounting plate has a corresponding limiting block on one side. The limiting blocks are arranged in correspondence with the sliding plate and can be locked and fixed to the lifting platform body by a second locking member. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the lifting platform ladder of the present invention. Figure 1 ;

[0027] Figure 2 for Figure 1 Enlarged structural diagram of section A in the middle;

[0028] Figure 3 for Figure 1 Enlarged structural diagram of section B in the middle;

[0029] Figure 4 for Figure 1 Enlarged structural diagram of section C;

[0030] Figure 5 This is a three-dimensional structural diagram of the lifting platform ladder of the present invention. Figure 2 ;

[0031] Figure 6 for Figure 5 Enlarged structural diagram of section D in the middle;

[0032] Figure 7 for Figure 5 Enlarged structural diagram of section E;

[0033] Figure 8 for Figure 5 Enlarged structural diagram of section F in the middle;

[0034] Figure 9 This is a schematic diagram of the connection between the lifting platform and the drive chain of the present invention;

[0035] Figure 10 This is a three-dimensional structural diagram of the assembly of the lifting platform body and the lifting platform ladder of the present invention. Figure 1 ;

[0036] Figure 11 This is a three-dimensional structural diagram of the assembly of the lifting platform body and the lifting platform ladder of the present invention. Figure 2 ;

[0037] Figure 12 for Figure 11 Enlarged structural diagram of section A in the middle;

[0038] Figure 13 This is a three-dimensional structural diagram of the assembly of the lifting platform body and the lifting platform ladder of the present invention. Figure 3 .

[0039] Figure 14 This is a three-dimensional structural diagram of the assembly of the lifting platform body and the lifting platform ladder of the present invention. Figure 4 ;

[0040] Figure 15 for Figure 14 Enlarged structural diagram of section A in the middle;

[0041] Figure 16 This is a three-dimensional structural diagram of the assembly of the lifting platform body and the lifting platform ladder of the present invention. Figure 5 .

[0042] The attached diagram lists the components represented by each number as follows:

[0043] 100. First straight section ladder body; 101. Second straight section ladder body; 102. Third straight section ladder body; 103. First arc-shaped section ladder body; 104. Second arc-shaped section ladder body; 105. First crossbeam; 106. Second crossbeam; 107. Drive unit; 108. First drive sprocket; 109. Tensioning sprocket; 110. First guide sprocket; 111. Second guide sprocket; 112. First connecting plate; 113. First adjusting plate; 114. First vertical beam; 115. Second vertical beam; 116. First guide rail; 117. Second guide rail; 118. L-shaped connecting plate; 120. First limit switch; 121. Second limit switch; 122. Drive chain; 123. First mounting plate; 124. Second mounting plate; 125. Connector; 126. Second drive sprocket;

[0044] 200. Tunnel wall; 201. Straight track;

[0045] 300. Lifting platform body; 302. Slide groove; 303. Roller assembly; 305. Connecting ear plate; 306. Second connecting plate; 307. Second adjusting plate; 308. Arc-shaped adjusting hole; 309. Connecting bolt hole; 310. Tightening plate; 311. Tightening screw; 312. Tightening protrusion; 313. Fixing plate;

[0046] 400. Roller bracket; 401. First roller; 402. Second roller; 403. Support arm; 404. Connecting shaft; 405. Third connecting plate; 406. Limiting protrusion; 407. Bolt hole; 408. Mounting plate; 409. Limiting block; 410. Sliding plate. Detailed Implementation

[0047] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0048] like Figures 1 to 16 As shown, a track docking system for tunnel inspection in this embodiment includes a lifting platform ladder, a lifting platform body 300, mounting plates 408, and roller assemblies 303. Each end of the top surface of the lifting platform body 300 is provided with a mounting plate 408. The two mounting plates 408 are slidably disposed on the top surface of the lifting platform body 300 and can be locked and fixed in a set position. Each mounting plate 408 is provided with at least one set of roller assemblies 303, and the roller assemblies 303 on the two mounting plates 408 are symmetrically arranged.

[0049] The two mounting plates 408 are respectively disposed on both sides of the lifting platform ladder, and the roller assemblies 303 on the two mounting plates 408 are respectively rotatably connected to the two vertical beams of the lifting platform ladder. The lifting platform body 300 is located on the side of the lifting platform ladder away from the tunnel wall 200.

[0050] like Figures 1-9 As shown, the lifting platform ladder in this embodiment includes multiple integrally connected straight ladder segments and multiple curved ladder segments. Adjacent straight ladder segments are connected and transitioned through curved ladder segments. Each straight ladder segment includes a first crossbeam 105, and each curved ladder segment includes a second crossbeam 106. A drive unit 107 is installed on the lowest first crossbeam 105 of the bottom straight ladder segment. A first drive sprocket 108 is installed at the output end of the drive unit 107. Tensioning chains are installed on the first crossbeams 105 in the middle of the other straight ladder segments. A second drive sprocket 126 is mounted on a first crossbeam 105 at the end of a straight section of the ladder body at the top. A guide sprocket assembly and a tension sprocket 109 are mounted on the second crossbeam 106. A drive chain 122 is fitted onto the first drive sprocket 108 and the second drive sprocket 126. The tension sprocket 109 engages with the inner side of the drive chain 122 to tension it. The guide sprocket assembly engages with the drive chain 122 to guide it. The drive chain located at the front of the straight section and the curved section of the ladder body is connected to the top surface of the lifting platform body. Specifically, the drive unit 107 is preferably a geared motor. By setting multiple straight-section ladder bodies and multiple curved-section ladder bodies, it can be adapted to the shape of the tunnel, which facilitates the assembly of the entire lifting platform ladder; by setting tension sprockets and guide sprocket assemblies, the drive chain can be reasonably arranged along the lifting platform ladder, which can enable the lifting platform to rise and fall smoothly under the drive of the drive chain, avoiding phenomena such as jamming or unstable lifting.

[0051] like Figure 3 , Figure 6 and Figure 7 As shown, the guide sprocket assembly of this embodiment includes a first guide sprocket 110 and a second guide sprocket 111. The first guide sprocket 110 engages with the inner side of the drive chain 122 on the back side of the arc-shaped ladder body for guidance, and the second guide sprocket 111 engages with the outer side of the drive chain 122 on the front side of the arc-shaped ladder body for guidance.

[0052] like Figure 3 , Figure 6 and Figure 7As shown, the arc-shaped ladder body in this embodiment includes two second crossbeams 106. The two second crossbeams 106 are respectively located at the connection points between the arc-shaped ladder body and two adjacent straight ladder bodies. The first guide sprocket 110 is mounted on one of the second crossbeams 106 via a first mounting plate 123 and is located on the rear side between the two second crossbeams 106. Two second guide sprockets 111 are provided and mounted on the two second crossbeams 106 via second mounting plates 124, respectively. The two second guide sprockets 111 are located on the front side of the two second crossbeams 106. Using two second guide sprockets provides better guidance and support for the drive chain.

[0053] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment, the tensioning sprocket 109 is mounted on the back side of the straight section ladder body via a connector 125.

[0054] like Figure 4 As shown, the connector 125 in this embodiment includes a first connecting plate 112 and a first adjusting plate 113. The first adjusting plate 113 is fixed to the first crossbeam 105, and the first connecting plate 112 is connected to the first adjusting plate 113 by bolts. The tensioning sprocket 109 is mounted on the first connecting plate 112. The first connecting plate is connected to the first adjusting plate by bolts, which facilitates the adjustment of the tension of the tensioning sprocket.

[0055] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the straight section ladder body of this embodiment includes two parallel first vertical beams 114, and a first horizontal beam 105 is connected between the two first vertical beams 114. The arc-shaped section ladder body includes two parallel second vertical beams 115, and a second horizontal beam 106 is connected between the two second vertical beams 115.

[0056] like Figures 2-4 As shown, in this embodiment, each of the two first vertical beams 114 is provided with a first guide rail 116, and each of the two second vertical beams 115 is provided with a second guide rail 117. The first guide rail 116 is integrally connected to the adjacent second guide rail 117. The roller assemblies 303 on the two mounting plates 408 are respectively rotatably connected to the first guide rail and the second guide rail; the first guide rail and the second guide rail provide support for the lifting and guiding of the lifting platform. The first guide rail 116 and the second guide rail 117 can adopt a guide rail groove or other structural form.

[0057] like Figure 9As shown, in this embodiment, an L-shaped connecting plate 118 is provided on the drive chain 122 located at the front of the straight section and the curved section of the ladder body. One end of the L-shaped connecting plate 118 is vertically fixed to one side of the drive chain 122, and the other end of the L-shaped connecting plate 118 is connected to the top surface of the lifting platform body 300 and extends towards the front of the drive chain 122. The use of the L-shaped connecting plate further avoids interference between the lifting platform and the ladder structure.

[0058] like Figure 9 As shown, in this embodiment, there are two L-shaped connecting plates 118 arranged at intervals.

[0059] like Figure 1 , Figure 2 , Figure 5 and Figure 8 As shown, the lifting platform ladder in this embodiment also includes a first limit switch 120 and a second limit switch 121. The first limit switch 120 is installed on the first crossbeam 105 at the bottom of the straight section of the ladder body located at the bottom, and the second limit switch 121 is installed on the first crossbeam 105 at the end of the straight section of the ladder body located at the top. The setting of the first limit switch and the second limit switch can realize the start and stop control of the lifting platform.

[0060] Specifically, such as Figure 1 and Figure 5 As shown, the multiple straight-segment ladder bodies in this embodiment include a first straight-segment ladder body 100, a second straight-segment ladder body 101, and a third straight-segment ladder body 102, and multiple arc-shaped ladder bodies include a first arc-shaped ladder body 103 and a second arc-shaped ladder body 104. A first arc-shaped ladder body 103 is provided between the first straight-segment ladder body 100 and the second straight-segment ladder body 101, and a second arc-shaped ladder body 104 is provided between the second straight-segment ladder body 101 and the third straight-segment ladder body 102. A drive unit 107 and a first limit switch 120 are provided on the first crossbeam 105 at the bottom of the first straight-segment ladder body 100. A first drive sprocket 108 connected to the drive end of the drive unit 107 can be located at the middle position of the first crossbeam 105, and a second drive sprocket 126 is also located at the middle position of the first crossbeam 105 at the end of the third straight-segment ladder body 102. The first arc-shaped ladder body 103 is equipped with a tension sprocket 109, and the second arc-shaped ladder body 104 is equipped with two tension sprockets 109. The curvature of the two arc-shaped ladder bodies is different to facilitate their fit with the tunnel wall 200.

[0061] In this embodiment, multiple straight-section ladder bodies and multiple curved-section ladder bodies can be connected to the tunnel wall 200 via connecting rods, and the lifting platform 300 can be rotatably connected to the straight-section ladder bodies and curved-section ladder bodies via roller assembly 303.

[0062] like Figures 10-13 As shown, the lifting platform body 300 of this embodiment has a plurality of second connecting plates 306 and a plurality of second adjusting plates 307 on its bottom surface. One end of each of the second connecting plates 306 is vertically fixed to the bottom surface of the lifting platform body 300. One end of each of the second adjusting plates 307 is connected to the other end of each of the second connecting plates 306. The other end of each of the second adjusting plates 307 is a linear track connection end. One end of each of the second adjusting plates 307 is connected to the other end of each of the second connecting plates 306 by connecting bolts. Specifically, connecting bolt holes 309 are provided on the second adjusting plates 307, and the connecting bolts pass through the connecting bolt holes 309. One end of each of the second adjusting plates 307 is also provided with an arc-shaped adjusting hole 308. The arc-shaped adjusting hole 308 is arranged around the connecting bolt as its center. The other end of each of the second connecting plates 306 is also provided with a positioning hole. The positioning hole is arranged correspondingly to the arc-shaped adjusting hole 308. The positioning hole and the arc-shaped adjusting hole 308 are locked and positioned by positioning bolts.

[0063] like Figure 12 As shown, in this embodiment, the second connecting plate 306 is provided with a clamping plate 310, and the clamping plate 310 is provided with a clamping screw 311. One end face of the second adjusting plate 307 is provided with a clamping protrusion 312, and the clamping screw 311 is adapted to abut against the clamping protrusion 312. By setting the clamping screw, the clamping protrusion can be clamped and positioned, further strengthening the angle positioning of the second connecting plate and the second adjusting plate after adjustment.

[0064] like Figure 11 and Figure 12 As shown, in this embodiment, the tightening screw 311 is arranged perpendicular to the connecting bolt and the positioning bolt.

[0065] like Figure 11 and Figure 12 As shown, in this embodiment, there are two tightening bolts 311, which are respectively arranged on the front and rear sides of the tightening protrusion 312.

[0066] like Figure 11 and Figure 12As shown, in this embodiment, the second connecting plate 306 is provided with a clamping plate 310 on each of its front and rear sides. The two clamping plates 310 extend to the left or right side of the second connecting plate 306, respectively. Each of the extension sections of the two clamping plates 310 is provided with a clamping screw 311. The two clamping screws 311 are arranged opposite to each other, and the clamping protrusion 312 is located between the two clamping screws 311.

[0067] like Figures 10-13 As shown, in this embodiment, the second adjusting plate 307 is arranged on the left or right side of the corresponding second connecting plate 306, and the connecting bolts and positioning bolts are arranged in the left-right direction.

[0068] like Figures 10-13 As shown, in this embodiment, there are three second connecting plates 306 and three second adjusting plates 307. A second connecting plate 306 is provided at each of the two ends of the bottom of the lifting platform body 300, and a second connecting plate 306 is provided in the middle position.

[0069] like Figure 12 As shown, in this embodiment, the other end of the second adjusting plate 307 is provided with a fixing plate 313, and the middle position of the fixing plate 313 is perpendicularly fixedly connected to the other end of the second adjusting plate 307.

[0070] like Figure 10 and Figure 13 As shown, the lifting platform body 300 in this embodiment has a connecting ear plate 305 located at the middle of its top surface. The connecting ear plate facilitates connection and fixation with the drive chain.

[0071] like Figure 10 , Figure 11 and Figure 13 As shown, in this embodiment, mounting plates 408 are vertically fixed to both ends of the top surface of the lifting platform body 300. Roller assemblies 303 are provided on the inner sides of both mounting plates 408. The lifting platform body 300 can be rolled onto the vertical beam of the lifting platform ladder via the roller assemblies 303, and the drive chain 122 is driven to rotate by the drive mechanism on the lifting platform ladder, thereby causing the lifting platform body 300 to move up and down along the lifting platform ladder. The two roller assemblies 303 adopt the same structural form, as long as they can be rolled and hooked onto the lifting platform ladder.

[0072] In one specific embodiment, the lifting platform body 300 is a rectangular plate, and the second connecting plate 306 can be an L-shaped connecting plate, as detailed below. Figure 10 As shown, one side of the second connecting plate 306 can be fixed to the bottom surface of the lifting platform body 300, and the other side of the second connecting plate 306 can be arranged perpendicular to the bottom surface of the lifting platform body 300.

[0073] In this embodiment, the lifting platform is connected to the second connecting plate and the second adjusting plate by connecting bolts. The angle can also be adjusted by the arc-shaped adjusting hole. After adjustment, it is locked and positioned by the positioning bolt. The angle of the connected linear track can be adjusted as needed, and effective docking with the inspection track can be achieved.

[0074] like Figures 14-16 As shown, the roller assembly in this embodiment includes a roller bracket 400, a first roller 401, and a second roller 402. The roller bracket 400 has a V-shaped structure and includes two symmetrically arranged support arms 403. A third connecting plate 405 is provided on the outer side wall of the connection between the two support arms 403 of the roller bracket 400. The third connecting plate 405 is fixed to one side of the mounting plate 408 and is arranged perpendicular to the line of symmetry of the roller bracket 400. A first roller 401 is provided at each end of the roller bracket 400, and the central axis of the two first rollers 401 is arranged parallel to the line of symmetry of the roller bracket 400. A second roller 402 is provided between the two support arms of the roller bracket 400. The second roller 402 is connected to the two support arms 403 of the roller bracket 400 through a connecting shaft 404, which is arranged perpendicular to the line of symmetry of the roller bracket 400. The two ends of the connecting shaft 404 are fixedly connected to the two support arms 403 respectively, and the second roller 402 is rotatably connected to the middle position of the connecting shaft 404. The two first rollers 401 are respectively rolledly connected to the front and rear sides of the vertical beam of the lifting platform ladder, and the second roller 402 is rolledly connected to the left or right side of the vertical beam of the lifting platform ladder. The side of the lifting platform ladder closest to the tunnel wall 200 is the rear side, and the side of the lifting platform ladder away from the tunnel wall 200 is the front side.

[0075] like Figure 16 As shown, in this embodiment, the outer wall of the connection between the two arms 403 of the roller bracket 400 is a planar structure. This planar structure is arranged parallel to the connecting shaft 404 and abuts against the third connecting plate 405. The connection between the two arms 403 of the roller bracket 400 is fixedly connected to the third connecting plate 405 by bolts. This makes the connection between the roller bracket and the third connecting plate more stable and reliable.

[0076] like Figure 16 As shown, in this embodiment, the third connecting plate 405 is provided with a limiting groove. The two support arms 403 of the roller bracket 400 are engaged in the limiting groove at their connection points, and the planar structure abuts against the bottom of the limiting groove. The limiting groove prevents misalignment or other instability in the connection between the roller bracket and the third connecting plate. Specifically, as shown... Figure 3As shown, a limiting protrusion 406 is provided on each side of the limiting groove, and the limiting groove is formed between the two limiting protrusions 406.

[0077] like Figure 15 and Figure 16 As shown, the third connecting plate 405 in this embodiment is a square plate, and each of the four corners of the square plate is provided with a bolt hole 407.

[0078] like Figure 14 and Figure 15 As shown, in this embodiment, the connecting shaft 404 is arranged parallel to the mounting plate 408, and the line of symmetry of the roller bracket 400 is arranged perpendicular to the mounting plate 408.

[0079] like Figure 14 and Figure 15 As shown, the mounting plate 408 of this embodiment is provided with two parallel and spaced roller assemblies.

[0080] The lifting platform roller system in this embodiment, by setting a V-shaped roller bracket and installing a first roller and a second roller on the roller bracket, can effectively clamp the lifting platform ladder and avoid instability during the lifting and moving process.

[0081] like Figures 14-16 As shown, in this embodiment, two lifting platform roller systems on a lifting platform body 300 are symmetrically arranged, and the connecting shaft 404 is arranged perpendicular to the lifting platform body 300.

[0082] like Figure 14 and Figure 15 As shown, in this embodiment, one end of the mounting plate 408 is provided with a sliding plate 410. The sliding plate 410 is slidably disposed on the top surface of the lifting platform body 300 and can be locked and fixed to the lifting platform body 300 by a first locking member. The sliding plate allows the position of the mounting plate on the lifting platform body to be adjusted as needed, thereby adjusting the distance between the two lifting platform roller systems and further avoiding unstable transitions when moving from a straight track to a curve.

[0083] like Figure 14 and Figure 15 As shown, in this embodiment, a limiting block 409 is slidably provided on the top surface of the lifting platform body 300. There are two limiting blocks 409 located between two mounting plates 408. Each mounting plate 408 has a corresponding limiting block 409 on one side. The limiting blocks 409 are arranged correspondingly to the sliding plate 410 and can be locked and fixed to the lifting platform body 300 by a second locking member. The limiting blocks can limit the movement of the mounting plates, further strengthening the stable connection of the mounting plates.

[0084] Specifically, a sliding groove 302 can be provided on the lifting platform body 300. The mounting plate 408 can be slidably engaged with the sliding groove 302 by passing through the first locking member. After the mounting plate 408 is in place, the first locking member is locked and positioned. The bottom of the limiting block 409 is slidably engaged with the sliding groove 302 by passing through the second locking member. After the limiting block 409 is in place, the second locking member is locked and positioned.

[0085] like Figure 14 and Figure 15 As shown, the top surface of the lifting platform body 300 in this embodiment is provided with a connecting ear plate 305 for connecting the drive chain 122.

[0086] In this embodiment, the lifting platform can be positioned by engaging the lifting platform roller system on the inner side of the two mounting plates of the lifting platform body 300 with the lifting platform ladder. Then, the lifting platform body 300 is connected and fixed to the drive chain 122 on the lifting platform ladder via the connecting ear plate 305. The drive chain 122 drives the lifting platform body 300 to move up and down along the lifting platform ladder. The bottom surface of the lifting platform body 300 is also connected to a linear track 201 via a connector, which is used to dock with the tunnel inspection track after the lifting platform is in position, thereby allowing the inspection mechanism to move onto the linear track 201.

[0087] Specifically, the lifting platform ladder includes two vertical beams and multiple horizontal beams. The multiple horizontal beams are fixed between the two vertical beams. The two first rollers 401 of the roller assembly are respectively rotatably connected to the front and rear side walls of the vertical beams. The second roller 402 of the roller assembly is rotatably connected to the left or right side wall of the vertical beam.

[0088] In this embodiment, the lifting platform body is equipped with a lifting platform roller system at each end of the top surface of the lifting platform body, which can effectively and stably clamp and fix it with the lifting platform ladder.

[0089] This embodiment is used for a tunnel inspection track docking system. By sliding two mounting plates on the lifting platform body, the relative position between the two mounting plates can be adjusted, thereby enabling the two roller assemblies on the lifting platform body to be stably engaged with the lifting platform ladder. This adapts to the structural features of different sections of the lifting platform ladder, making the operation of the lifting platform body on the lifting platform ladder more stable and reliable.

[0090] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0091] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0092] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0093] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0094] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0095] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A track docking system for tunnel inspection, characterized in that, The system includes a lifting platform ladder, a lifting platform body, mounting plates, and roller assemblies. Each end of the top surface of the lifting platform body is provided with a mounting plate. The two mounting plates are slidably disposed on the top surface of the lifting platform body and can be locked and fixed in a set position. Each mounting plate is provided with at least one set of roller assemblies, and the roller assemblies on the two mounting plates are symmetrically arranged. The two mounting plates are respectively disposed on both sides of the lifting platform ladder, and the roller assemblies on the two mounting plates are respectively rotatably connected to the two vertical beams of the lifting platform ladder. The lifting platform body is located on the side of the lifting platform ladder away from the tunnel wall. The bottom surface of the lifting platform body is provided with multiple second connecting plates and multiple adjusting plates. One end of each of the multiple second connecting plates is fixed to the bottom surface of the lifting platform body, and one end of each of the multiple adjusting plates is connected to the other end of each of the multiple second connecting plates. The other end of each adjusting plate is a linear track connection end. One end of each adjusting plate is connected to the other end of each second connecting plate by connecting bolts. One end of each adjusting plate is also provided with an arc-shaped adjusting hole, which is arranged around the connecting bolt as the center. The other end of each second connecting plate is also provided with a positioning hole, which is arranged correspondingly to the arc-shaped adjusting hole. The positioning hole and the arc-shaped adjusting hole are locked and positioned by positioning bolts.

2. The track docking system for tunnel inspection according to claim 1, characterized in that, The lifting platform ladder includes multiple integrally connected straight ladder segments and multiple curved ladder segments. Adjacent straight ladder segments are connected and transitioned through curved ladder segments. Each straight ladder segment includes a first crossbeam, and each curved ladder segment includes a second crossbeam. A drive unit is installed on the lowest first crossbeam of the bottom straight ladder segment, and a first drive sprocket is installed at the output end of the drive unit. Tension sprockets are installed on the first crossbeams in the middle of other straight ladder segments, and a second drive sprocket is installed on the first crossbeam at the end of the top straight ladder segment. A guide sprocket assembly and a tension sprocket are installed on the second crossbeam. A drive chain is fitted onto the first and second drive sprockets. The tension sprocket engages with the inner side of the drive chain to tension it, and the guide sprocket assembly engages with the drive chain to guide it. The drive chain located at the front of the straight and curved ladder segments is connected to the top surface of the lifting platform.

3. The track docking system for tunnel inspection according to claim 2, characterized in that, The guide sprocket assembly includes a first guide sprocket and a second guide sprocket. The first guide sprocket engages with the inner side of the drive chain on the back side of the arc-shaped ladder body for guidance, and the second guide sprocket engages with the outer side of the drive chain on the front side of the arc-shaped ladder body for guidance.

4. The track docking system for tunnel inspection according to claim 3, characterized in that, The arc-shaped ladder body includes two second crossbeams, which are located at the connection points between the arc-shaped ladder body and two adjacent straight ladder bodies. The first guide sprocket is mounted on one of the second crossbeams via a first mounting plate and is located on the rear side between the two second crossbeams. There are two second guide sprockets, which are mounted on the two second crossbeams via second mounting plates and are located on the front side of the two second crossbeams respectively.

5. The track docking system for tunnel inspection according to claim 2, characterized in that, An L-shaped connecting plate is provided on the drive chain located on the front side of the straight section ladder body and the curved section ladder body. One end of the L-shaped connecting plate is vertically fixed to one side of the drive chain, and the other end of the L-shaped connecting plate is connected to the top surface of the lifting platform body and extends towards the front side of the drive chain.

6. The track docking system for tunnel inspection according to claim 2, characterized in that, The lifting platform ladder also includes a first limit switch and a second limit switch. The first limit switch is installed on the first crossbeam at the bottom of a straight section of the ladder body located at the bottom, and the second limit switch is installed on the first crossbeam at the end of a straight section of the ladder body located at the top.

7. The track docking system for tunnel inspection according to claim 1, characterized in that, One end of each of the second connecting plates is vertically fixed to the bottom surface of the lifting platform body.

8. The track docking system for tunnel inspection according to claim 1, characterized in that, The second connecting plate is provided with a clamping plate, the clamping plate is provided with a clamping screw, and one end face of the adjusting plate is provided with a clamping protrusion, the clamping screw is adapted to abut against the clamping protrusion; The second connecting plate is provided with a clamping plate on each of its front and rear sides. The two clamping plates extend to the left or right side of the second connecting plate, respectively. Each of the extension sections of the two clamping plates is provided with a clamping screw. The two clamping screws are arranged opposite to each other, and the clamping protrusion is located between the two clamping screws.

9. A track docking system for tunnel inspection according to claim 1, characterized in that, The roller assembly includes a roller bracket, a first roller, and a second roller. The roller bracket has a V-shaped structure and includes two symmetrically arranged support arms. A third connecting plate is provided on the outer side wall of the connection between the two support arms of the roller bracket. The third connecting plate is fixed to one side of the mounting plate and is arranged perpendicular to the line of symmetry of the roller bracket. Each end of the roller bracket is provided with a first roller, and the central axis of the two first rollers is arranged parallel to the line of symmetry of the roller bracket. A second roller is provided between the two support arms of the roller bracket. The second roller is connected to the two support arms of the roller bracket through a connecting shaft, which is arranged perpendicular to the line of symmetry of the roller bracket. The two first rollers are respectively rolledly connected to the front and rear sides of the vertical beam of the lifting platform ladder, and the second roller is rolledly connected to the left or right side of the vertical beam of the lifting platform ladder.

10. A track docking system for tunnel inspection according to claim 1, characterized in that, One end of the mounting plate is provided with a sliding plate, which is slidably disposed on the top surface of the lifting platform body and can be locked and fixed to the lifting platform body by the first locking member; The top surface of the lifting platform body is also slidably provided with a limiting block. There are two limiting blocks located between two mounting plates. Each mounting plate has a corresponding limiting block on one side. The limiting blocks are arranged in correspondence with the sliding plate and can be locked and fixed to the lifting platform body by a second locking member.

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