Construction ladder for road and bridge construction

Abstract

A construction ladder for road and bridge construction effectively solves the problems that a construction ladder is inconvenient to stretch out and draw back, and potential safety hazards exist. Comprising a base, a ladder assembly is detachably arranged on the base, a telescopic frame is telescopically arranged in the ladder assembly, a ladder stand is arranged on one side of the ladder assembly, and the top of the ladder stand is movably connected with the telescopic frame; the ladder frame comprises a hollow square tube, a plurality of limiting blocks are uniformly distributed on the side wall of the square tube, the telescopic frame is provided with a sliding rod sliding in the square tube, a plurality of limiting grooves are formed in the sliding rod, and the limiting blocks are matched with the limiting grooves to enable the telescopic frame to be fixed on the ladder frame; the telescopic construction ladder is simple and ingenious in structure and convenient to use, the telescopic construction ladder can be quickly stretched out and drawn back, stable connection is kept after stretching out and drawing back, and potential safety hazards are eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of road and bridge construction, in particular to a construction ladder for road and bridge construction. Background Art

[0002] During road and bridge construction, construction ladders are often needed for use in high-altitude construction. The existing construction ladders are large in size and inconvenient to use. In addition, the height of the construction ladder is not easy to adjust and it is not easy to fix after being extended, which poses a safety hazard. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides a construction ladder for road and bridge construction, which effectively solves the problem that the construction ladder is inconvenient to extend and retract and has potential safety hazards.

[0004] The technical solution to the technical problem is: a construction ladder for road and bridge construction, comprising a base, a ladder frame detachably arranged on the base, a telescopic frame telescopically arranged inside the ladder frame, a climbing ladder arranged on one side of the ladder frame, and a top of the climbing ladder movably connected to the telescopic frame;

[0005] The ladder frame comprises a hollow square tube, a plurality of limit blocks are evenly distributed on the side wall of the square tube, the telescopic frame is provided with a slide bar sliding in the square tube, the slide bar is provided with a plurality of limit grooves, and the limit blocks cooperate with the limit grooves to fix the telescopic frame on the ladder frame.

[0006] Preferably, a universal wheel with a locking mechanism is provided at the bottom of the base.

[0007] Preferably, a sink is provided above the base, and fixing blocks cooperating with the sink are provided at the bottom of the ladder frame and the bottom of the ladder.

[0008] Preferably, a vertical groove is provided on the side wall of the square tube opposite to the limit block, the slide rod is provided with a limit rod sliding in the vertical groove, the limit rod is sleeved with a spring, and the spring pushes the slide rod inward so that the slide rod is close to the limit block.

[0009] Preferably, the outer end of the limiting rod is connected to a handle.

[0010] Preferably, a platform is provided on the top of the telescopic frame.

[0011] Preferably, the ladder comprises an outer ladder rotatably connected to the fixed block and an inner ladder sliding inside the outer ladder, and the top of the inner ladder is rotatably connected to the platform.

[0012] The utility model has a simple and ingenious structure and is easy to use. The construction ladder can quickly complete extension and retraction and maintain a stable connection after extension and retraction, thus eliminating safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the base in the utility model.

[0016] Figure 4 It is a structural schematic diagram of the ladder frame in the utility model.

[0017] Figure 5 It is a structural schematic diagram of the telescopic frame in the utility model.

[0018] Figure 6 It is a structural schematic diagram of the ladder in the utility model. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0020] Depend on Figures 1 to 6 It can be seen that a construction ladder for road and bridge construction includes a base 1, a ladder frame 2 is detachably provided on the base 1, a telescopic frame 3 is telescopically provided inside the ladder frame 2, a climbing ladder 4 is provided on one side of the ladder frame 2, and the top of the climbing ladder 4 is movably connected to the telescopic frame 3;

[0021] The ladder frame 2 includes a hollow square tube 5, and a plurality of limit blocks 6 are evenly distributed on the side walls of the square tube 5. The telescopic frame 3 is provided with a slide rod 7 that slides in the square tube 5, and the slide rod 7 is provided with a plurality of limit grooves 8. When the limit blocks 6 cooperate with the limit grooves 8, the telescopic frame 3 is fixed on the ladder frame 2.

[0022] When the utility model is used in a specific way,

[0023] Move the base 1 to the construction position, place the ladder frame 2 and the climbing ladder 4 on the base 1 and fix them, adjust the position of the telescopic frame 3 on the ladder frame 2, and then you can use the construction ladder to carry out construction.

[0024] The height positions of the telescopic frame 3 and the ladder frame 2 are fixed by the cooperation of the limit block 6 and the limit groove 8, so that the two remain stable, do not need to use pins or screws for connection, and can be quickly adjusted and fixed.

[0025] A universal wheel 9 with a locking mechanism is provided at the bottom of the base 1, which can facilitate the transfer of the position of the construction ladder and can be locked during construction to maintain stability.

[0026] A sink 10 is provided above the base 1, and a fixing block 11 that cooperates with the sink 10 is provided at the bottom of the ladder frame 2 and the bottom of the ladder 4. The ladder 4 and the ladder frame 2 can be removed and stored when not in use. When in use, the fixing blocks 11 of the ladder frame 2 and the ladder 4 are placed in the sink 10 to keep them stably connected with the base 1 and will not shake during construction, thereby providing workers with improved safety and stable protection.

[0027] A vertical groove 12 is provided on the side wall of the square tube 5 opposite to the limit block 6, and a limit rod 13 sliding in the vertical groove 12 is provided on the slide rod 7. A spring 14 is sleeved on the limit rod 13. The spring 14 pushes the slide rod 7 inward so that the slide rod 7 is close to the limit block 6. A handle 15 is connected to the outer end of the limit rod 13.

[0028] The thickness of the slide bar 7 is smaller than the inner size of the square tube 5, and it can have horizontal displacement in the square tube 5. The spring 14 pushes the slide bar 7 so that the limit groove 8 on the slide bar 7 cooperates with the limit block 6 to complete the fixation. When moving the telescopic frame 3, the handle 15 is pulled to cause the spring 14 to contract, and the limit groove 8 is disengaged from the limit block 6. The telescopic frame 3 can move vertically in the square tube 5. After moving to the appropriate position, the limit groove 8 is aligned with the limit block 6. The spring 14 pushes the slide bar 7 to complete the cooperation, and the telescopic frame 3 is fixed with the ladder frame 2.

[0029] The connection position between the limit block 6 and the limit groove 8 is located on the back side of the force direction of the telescopic frame 3. When the telescopic frame 3 is subjected to force, the limit block 6 and the limit groove 8 will be more closely matched to avoid disengagement, thereby ensuring stability during construction.

[0030] A platform 16 is provided on the top of the telescopic frame 3, and the ladder 4 includes an outer ladder 17 rotatably connected to the fixed block 11 and an inner ladder 18 sliding in the outer ladder 17, and the top of the inner ladder 18 is rotatably connected to the platform 16; the ladder 4 is connected by the telescopic cooperation of the outer ladder 17 and the inner ladder 18, and the telescopic frame 3 drives the inner ladder 18 to extend and retract in the outer ladder 17 when the inner ladder is extended and retracted, and the top of the inner ladder 18 always maintains a stable connection with the platform 16, and pedals are provided on both the inner ladder 18 and the outer ladder 17, which can provide a place to step on even after extension and retraction.

[0031] Compared with the prior art, the utility model has the following beneficial effects: the extension and retraction of the construction ladder is completed by the cooperation of the extension frame and the ladder frame, and no pins and screws are used to fix the two. The fixed connection is quickly completed through the cooperation of the limit block and the limit groove. The operation is convenient and fast, and the extension and retraction of the construction ladder can be completed quickly. The connection is stable and will not be out of the matching position, thereby ensuring stability during construction.

Claims

1. A construction ladder for road and bridge construction, characterized in that: The invention comprises a base (1), a ladder frame (2) is detachably provided on the base (1), a telescopic frame (3) is telescopically provided inside the ladder frame (2), a climbing ladder (4) is provided on one side of the ladder frame (2), and the top of the climbing ladder (4) is movably connected to the telescopic frame (3); The ladder frame (2) comprises a hollow square tube (5), a plurality of limit blocks (6) are evenly distributed on the side wall of the square tube (5), the telescopic frame (3) is provided with a slide bar (7) sliding in the square tube (5), a plurality of limit grooves (8) are provided on the slide bar (7), and the limit blocks (6) cooperate with the limit grooves (8) to fix the telescopic frame (3) on the ladder frame (2).

2. A construction ladder for road and bridge construction according to claim 1, characterized in that: A universal wheel (9) with a locking mechanism is provided at the bottom of the base (1).

3. A construction ladder for road and bridge construction according to claim 1, characterized in that: A sink groove (10) is provided above the base (1), and a fixing block (11) cooperating with the sink groove (10) is provided at the bottom of the ladder frame (2) and the bottom of the climbing ladder (4).

4. A construction ladder for road and bridge construction according to claim 1, characterized in that: A vertical groove (12) is provided on the side wall of the square tube (5) opposite to the limit block (6), and a limit rod (13) sliding in the vertical groove (12) is provided on the slide rod (7). A spring (14) is sleeved on the limit rod (13), and the spring (14) pushes the slide rod (7) inward so that the slide rod (7) is close to the limit block (6).

5. A construction ladder for road and bridge construction according to claim 4, characterized in that: The outer end of the limiting rod (13) is connected to a handle (15).

6. A construction ladder for road and bridge construction according to claim 3, characterized in that: A platform (16) is provided on the top of the telescopic frame (3).

7. A construction ladder for road and bridge construction according to claim 6, characterized in that: The ladder (4) comprises an outer ladder (17) rotatably connected to the fixed block (11) and an inner ladder (18) sliding inside the outer ladder (17); the top of the inner ladder (18) is rotatably connected to the platform (16).

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