Climbing ladder for rail transit U-shaped beam

Abstract

The utility model provides a kind of suitable for track traffic U-shaped beam's climbing ladder, including ladder frame, further include the array setting several tread plates on ladder frame, the bottom of ladder frame both ends is provided with support assembly one, support assembly one is connectable with the rail of U-shaped beam bottom, the top of ladder frame both ends is provided with the support assembly two of U-shaped beam top side contact.Being provided with the suitable for track traffic U-shaped beam's climbing ladder of the utility model, through the clamping and locking of bottom support assembly one and rail, and the rolling support of top support assembly two and U-shaped beam top surface, the fixation of ladder is more firm and reliable;Bottom is cooperated by hand screw bolt one and hand screw bolt two, can use gyro wheel one to carry out preliminary positioning and move, and support block can be firmly locked on rail, the installation and disassembly of ladder are simple, fast, stable and reliable, improve the efficiency of track traffic maintenance operation, and operating personnel are more safe when high-altitude climbing.

Description

Technical Field

[0001] This utility model relates to the field of rail transit engineering maintenance technology, specifically to a climbing ladder applicable to U-shaped beams in rail transit. Background Technology

[0002] Elevated rail transit lines are an important part of modern urban transportation networks. U-shaped beams are widely used due to their high structural rigidity, good noise reduction effect, and excellent aesthetics. However, the unique "U"-shaped open cross-section structure of U-shaped beams also presents challenges for their daily inspection, maintenance, construction, and subsequent pipeline laying. When conducting daily inspections, maintenance, or construction on U-shaped beams, workers need to climb from the ground at the bottom of the beam to the work area at the top of the U-shaped beam. Currently, traditional straight ladders or scaffolding are mostly used for climbing and inspection of U-shaped beams.

[0003] However, existing ladders installed and fixed inside U-shaped beams not only have poor stability, but also require time-consuming and labor-intensive transportation when erecting ladders in different locations, resulting in poor flexibility and affecting the efficiency of rail transit maintenance operations. This solution addresses the above-mentioned technical problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a climbing ladder suitable for U-shaped beams in rail transit. Through the snap-fit ​​and locking of the bottom support component one with the rail, and the rolling support of the top support component two with the top surface of the U-shaped beam, the ladder is more securely and reliably fixed. The coordinated action of hand-tightened bolts one and two at the bottom allows for initial positioning and movement using roller one, while also firmly locking the support block to the rail. The ladder is easy, quick, stable, and reliable to install and disassemble, improving the efficiency of rail transit maintenance operations and enhancing the safety of workers climbing at heights.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a climbing ladder suitable for U-shaped beams in rail transit, including a ladder frame and several treads arrayed on the ladder frame. Support components one are provided at both ends of the bottom of the ladder frame, and the support components one are detachably connected to the steel rails at the bottom of the U-shaped beam. Support components two are provided at both ends of the top of the ladder frame, which are in contact with the top side of the U-shaped beam.

[0006] The first support component includes a support block disposed at the bottom end of the ladder frame, a first roller rotatably disposed on the support block, the support block being provided with an installation groove for accommodating the steel rail, the first roller passing through the installation groove and having separable contact with the steel rail, the second support component includes a support arm connected at one end to the ladder frame, a second roller rotatably disposed at the other end of the support arm, and the second roller rollingly disposed on the top side of the U-shaped beam.

[0007] A roller frame is vertically slidably mounted on the top of the support block. The roller is rotatably mounted on the roller frame. A hand-tightening bolt is threaded through the support block and is threadedly connected to the support block. The end of the hand-tightening bolt is rotatably connected to the roller frame.

[0008] The side of the support block is provided with a second hand-tightening bolt, which passes through the mounting groove and abuts against the rail in a separable manner.

[0009] The other end of the support arm is provided with a support, and a roller frame two is horizontally rotatably mounted on the support. The roller two is rotatably mounted on the roller frame two. A hand-tightening bolt three is provided through the support. The top side of the roller frame two is provided with positioning hole one and positioning hole two. The hand-tightening bolt three is detachably connected to positioning hole one and positioning hole two respectively.

[0010] One end of each of the aforementioned treads is hinged to the ladder frame, and the other end of the aforementioned treads is hinged to a connecting rod. A support rod is provided at the end of the connecting rod, one end of the support rod is hinged to the connecting rod, and the other end of the support rod is provided with a connecting screw hole. A plurality of positioning holes are arranged in an array on the side of the ladder frame, and a four-hand-tightened bolt is inserted into one of the positioning holes. The four-hand-tightened bolt passes through the connecting screw hole.

[0011] The ladder is equipped with handrails.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) By connecting and locking the bottom support component one with the rail, and by rolling the top support component two with the top surface of the U-shaped beam, the ladder is more secure and reliable. The bottom is secured by the coordinated use of the hand-tightened bolt one and the hand-tightened bolt two. The roller one can be used for initial positioning and movement, and the support block can be securely locked to the rail. The installation and disassembly of the ladder is simple, quick, stable and reliable, which improves the efficiency of rail transit maintenance operations and makes it safer for workers to climb at high altitudes.

[0014] (2) By rolling the bottom roller one on the rail and the top roller two on the top surface of the U-shaped beam, the operator can easily push the entire ladder to move longitudinally along the beam, realizing rapid and continuous transfer between different work points, and further improving the efficiency of long-distance, multi-point inspection and maintenance work.

[0015] (3) The pedals achieve the effect of linkage folding through the combination of connecting rods and support rods. All pedal angles can be adjusted synchronously and locked in the horizontal working state by a single hand-tightening bolt. The pedals can be folded during transportation and storage, making the overall size of the ladder more compact and safer and more reliable to use when the pedals are unfolded. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a utility model Figure 1 A partially enlarged structural diagram of part A;

[0018] Figure 3 This is a utility model Figure 1 A partially enlarged structural diagram of part B;

[0019] Figure 4 This is a cross-sectional structural schematic diagram of the support component one of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the support component of this utility model;

[0021] Figure 6 This is an exploded view of the structure of the second support component of this utility model;

[0022] Figure 7 This is a schematic diagram of the connection structure between the connecting rod and the pedal of this utility model;

[0023] Figure 8 This is a structural schematic diagram of the connecting rod of this utility model.

[0024] In the diagram: 1. Ladder frame; 11. Positioning hole; 2. Step; 3. Support component one; 31. Support block; 311. Mounting groove; 32. Roller one; 33. Roller frame one; 34. Hand-tightening bolt one; 35. Hand-tightening bolt two; 4. Support component two; 41. Support arm; 42. Roller two; 43. Support; 44. Roller frame two; 441. Positioning hole one; 442. Positioning hole two; 45. Hand-tightening bolt three; 5. Connecting rod; 6. Support rod; 61. Connecting screw hole; 62. Hand-tightening bolt four; 7. Handrail; 8. U-shaped beam; 9. Rail. Detailed Implementation

[0025] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0026] See Figures 1-8 A climbing ladder suitable for U-shaped beams in rail transit includes a ladder frame 1 and several treads 2 arranged in an array on the ladder frame 1. Support components 3 are provided at both ends of the bottom of the ladder frame 1. The support components 3 are detachably connected to the steel rails 9 at the bottom of the U-shaped beam 8. Support components 4 are provided at both ends of the top of the ladder frame 1 and are in contact with the top side of the U-shaped beam 8.

[0027] Support assembly 3 includes a support block 31 at the bottom of the ladder frame 1 and a roller 32 rotatably mounted on the support block 31. The support block 31 is provided with a mounting groove 311 for accommodating the rail 9. The roller 32 passes through the mounting groove 311 and has separable contact with the rail 9. Support assembly 4 includes a support arm 41 connected to the ladder frame 1 at one end and a roller 42 rotatably mounted at the other end of the support arm 41. The roller 42 is rolled on the top side of the U-shaped beam 8.

[0028] Specifically, at least a portion of the wheel body of roller 32 is located within the mounting groove 311 and is detachably in contact with the top surface of rail 9.

[0029] A roller frame 33 is vertically slidably mounted on the top of the support block 31, and a roller 32 is rotatably mounted on the roller frame 33. A hand-tightening bolt 34 is threaded through the support block 31 and is threadedly connected to the support block 31. The end of the hand-tightening bolt 34 is rotatably connected to the roller frame 33.

[0030] The side of the support block 31 is provided with a second hand-tightening bolt 35, which passes through the mounting groove 311 and abuts against the rail 9 in a separable manner.

[0031] The other end of the support arm 41 is provided with a support 43. A roller frame 44 is horizontally rotatably mounted on the support 43. The roller 42 is rotatably mounted on the roller frame 44. A hand-tightening bolt 45 is passed through the support 43. The top side of the roller frame 44 is provided with a positioning hole 441 and a positioning hole 442. The hand-tightening bolt 45 is detachably connected to the positioning hole 441 and the positioning hole 442 respectively. Specifically, the hand-tightening bolt 45 can be selectively connected to the positioning hole 441 or the positioning hole 442 to lock the roller frame 44 at different angles.

[0032] One end of several treads 2 is hinged to the ladder frame 1, and the other end of several treads 2 is hinged to a connecting rod 5. A support rod 6 is provided at the end of the connecting rod 5. One end of the support rod 6 is hinged to the connecting rod 5, and the other end of the support rod 6 is provided with a connecting screw hole 61. Several positioning holes 11 are arranged in an array on the side of the ladder frame 1. A four-hand-tightening bolt 62 is inserted into one of the positioning holes 11. The four-hand-tightening bolt 62 is installed through the connecting screw hole 61.

[0033] A handrail 7 is provided on the ladder frame 1.

[0034] The specific working process of this utility model:

[0035] During installation and use, the operator first lifts the ladder vertically so that the mounting groove 311 of the bottom support block 31 is inserted into the steel rail 9 at the bottom of the U-shaped beam 8, and the roller 32 rests on the top surface of the steel rail 9. Then, tighten the hand-tightening bolt 34 to raise and adjust the height of roller 32 by raising roller frame 33, ensuring that roller 32 is disengaged from the top surface of rail 9. Next, tighten the hand-tightening bolt 35 to press the two sides of rail 9 together with support block 31, thus fixing support block 31. Then, push the top of ladder frame 1 towards the edge of U-beam 8, so that roller 42 of support component 24 contacts and supports the top surface of U-beam 8. Rotate roller frame 244 until the rotation direction of roller 42 on roller frame 244 is perpendicular to the direction of rail 9. Then, screw the hand-tightening bolt 35 into positioning hole 2442 to lock the direction of roller 42 on roller frame 244. Finally, hold the swing connecting rod 5 to make the step 2 relatively horizontal, align the support rod 6 with the corresponding positioning hole 11 on ladder frame 1, and fix the support rod 6 with hand-tightening bolt 462. The operator can then hold the handrail 7 and step on the step 2 to climb safely.

[0036] When the ladder needs to be disassembled and moved, the worker on the top side of the U-beam 8 loosens the third hand-tightening bolt 45, rotates the support 43 until the rotation direction of the roller 42 on the roller frame 44 is parallel to the direction of the rail 9, screws the third hand-tightening bolt 45 into the positioning hole 441 to lock the roller 42. Then, the worker on the bottom side of the U-beam 8 loosens the second hand-tightening bolt 35 to release the lock on the steel beam, and then rotates the first hand-tightening bolt 34, so that the roller frame 33 drives the roller 32 down to the top side of the rail 9. At this time, the support block 31 disengages from the top side of the rail 9, and the roller 32 contacts the rail 9. The worker on the bottom side of the U-beam 8 can then hold the ladder frame 1, and the roller 32 rolls along the rail 9, while the roller 42 rolls along the top side of the U-beam 8, making it easy to move the ladder.

[0037] The ladder is secured by the engagement and locking of the bottom support component 3 with the rail 9, and by the rolling support of the top support component 4 with the top surface of the U-beam 8. Compared to ground-mounted support, the ladder is more securely and reliably fixed. The bottom is secured by the coordinated action of the hand-tightened bolts 34 and 35, which allow for initial positioning and movement using the rollers 32, and also securely lock the support block 31 onto the rail 9 to prevent the ladder from moving. The top is secured by the adjustable rollers 42. The ladder can be installed and disassembled using the hand-tightened bolts. The installation and disassembly are simple, quick, stable, and reliable, improving the efficiency of rail transit maintenance operations and making it safer for workers to climb at heights.

[0038] With the bottom roller 32 rolling on the rail 9 and the top roller 42 rolling on the top surface of the U-shaped beam 8, the operator can easily push the entire ladder along the longitudinal direction of the beam, realizing rapid and continuous transfer between different work points, and further improving the efficiency of long-distance, multi-point inspection and maintenance work.

[0039] The step 2 achieves a linkage folding effect through the combination of connecting rod 5 and support rod 6. The angle of all step 2 can be adjusted synchronously and locked in a horizontal working state by a single hand-tightening bolt 62. The step 2 can be folded during transportation and storage, making the overall size of the ladder more compact and safer and more reliable to use when the step 2 is unfolded.

[0040] Technical features not described in detail in this solution are based on conventional operations and general understanding of those skilled in the art, and are therefore not elaborated upon here. Technical features not described in this utility model can be implemented using existing technology, and will not be repeated here. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

Claims

1. A climbing ladder suitable for U-shaped beams in rail transit, comprising a ladder frame (1), characterized in that, It also includes a number of treads (2) arranged in an array on the ladder frame (1), and a support component (3) is provided at both ends of the bottom of the ladder frame (1). The support component (3) is detachably connected to the rail (9) at the bottom of the U-shaped beam (8). The support component (4) is provided at both ends of the top of the ladder frame (1) and contacts the top side of the U-shaped beam (8). The first support component (3) includes a support block (31) disposed at the bottom end of the ladder frame (1) and a roller (32) rotatably disposed on the support block (31). The support block (31) is provided with an installation groove (311) for accommodating the rail (9). The roller (32) passes through the installation groove (311) and is in separable contact with the rail (9). The second support component (4) includes a support arm (41) connected at one end to the ladder frame (1) and a roller (42) rotatably disposed at the other end of the support arm (41). The roller (42) is rolled on the top side of the U-shaped beam (8).

2. The climbing ladder for U-shaped beams in rail transit according to claim 1, characterized in that, A roller frame (33) is vertically slidably mounted on the top of the support block (31). The roller (32) is rotatably mounted on the roller frame (33). A hand-tightening bolt (34) is provided through the support block (31). The hand-tightening bolt (34) is threadedly connected to the support block (31). The end of the hand-tightening bolt (34) is rotatably connected to the roller frame (33).

3. The climbing ladder for U-shaped beams in rail transit according to claim 2, characterized in that, The side of the support block (31) is provided with a second hand-tightening bolt (35), which passes through the mounting groove (311) and abuts against the rail (9) in a separable manner.

4. The climbing ladder for U-shaped beams in rail transit according to claim 1, characterized in that, The other end of the support arm (41) is provided with a support (43), and a roller frame (44) is horizontally rotatably provided on the support (43). The roller (42) is rotatably provided on the roller frame (44). A hand-tightening bolt (45) is provided through the support (43). The top side of the roller frame (44) is provided with a positioning hole (441) and a positioning hole (442). The hand-tightening bolt (45) is detachably connected to the positioning hole (441) and the positioning hole (442) respectively.

5. The climbing ladder for U-shaped beams in rail transit according to claim 4, characterized in that, One end of each of the several pedals (2) is hinged to the ladder frame (1), and the other end of the several pedals (2) is hinged to a connecting rod (5). The end of the connecting rod (5) is provided with a support rod (6). One end of the support rod (6) is hinged to the connecting rod (5), and the other end of the support rod (6) is provided with a connecting screw hole (61). The side of the ladder frame (1) is provided with several positioning holes (11), and a four-hand-tightening bolt (62) is inserted into one of the positioning holes (11). The four-hand-tightening bolt (62) passes through the connecting screw hole (61).

6. The climbing ladder for U-shaped beams in rail transit according to claim 1, characterized in that, The ladder (1) is equipped with a handrail (7).

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