Movable safety fixing device for bridge deck side operation

Abstract

The utility model relates to a movable safety fixing device for bridge face side operation. The movable safety fixing device comprises a main body frame, a walking mechanism, a limiting structure and a steel wire rope assembly. The main body frame is door-shaped and consists of a top frame and a side frame; a cross beam is installed on the transverse axis of a side frame of the main body frame, a limiting structure is installed on the cross beam, and a steel wire rope assembly is arranged on the cross beam and above the limiting structure in a sleeving mode; the walking mechanism adopts a roller structure, the limiting structure comprises a screw rod and a pressing plate, and an anti-skid groove is formed in a protective pad of the pressing plate, so that slippage is effectively prevented; the steel wire rope assembly is connected with the beam and the safety rope through clamping rings to guarantee safety of constructors. The whole device is reasonable in structural design, all parts are easy to mount and dismount, the structure is small and exquisite, the problem that traditional edge construction protection measures of a high-altitude bridge floor are insufficient is effectively solved, and the safety and efficiency of high-altitude edge operation construction are improved.

Description

Technical Field

[0001] This utility model relates to the field of mobile safety technology, and in particular to a mobile safety fixing device for the construction of steel railings on the edge of protective beams such as the "three walls" of railway bridges. Background Technology

[0002] In railway bridge engineering, the deck of high-speed railway bridges is typically tens of meters above the ground, with a minimum height of over five meters. During the construction of ancillary structures such as bridge deck panels, guardrails, and sound barriers, workers are constantly working near the edge and moving frequently, making it a highly dangerous high-altitude operation. However, on bridge decks where the protective beams have already been constructed, there are almost no structures available to accommodate workers wearing safety harnesses, posing a significant risk of falls from height for workers operating near the edge. Summary of the Invention

[0003] The purpose of this utility model is to provide a movable safety fixing device for bridge edge operations.

[0004] The purpose of this utility model is achieved as follows:

[0005] A movable safety fixing device for bridge edge operations includes a main frame, a traveling mechanism, a limiting structure, and a wire rope assembly. The main frame consists of a top frame and two side frames forming a portal structure, allowing the main frame to be stably secured to the protective wall beam and slide up and down on the beam, adapting to the construction needs of protective wall beams of different widths. The traveling mechanism inside the main frame conforms to three sides of the protective wall beam and is installed on the side and top frames, employing a roller structure. A crossbeam is installed on the transverse axis of the side frames of the main frame, and a limiting structure is installed on the crossbeam. A wire rope assembly is fitted on the crossbeam and above the limiting structure.

[0006] The wire rope assembly includes a shackle and a wire rope. The shackle is fitted onto the crossbeam, one end of the wire rope is connected to the shackle, and the other end of the wire rope is used to connect to a safety rope. The shackle enables a movable connection between the wire rope and the crossbeam.

[0007] The main frame is made of square steel, and the square steel of the top frame is all connected by welding.

[0008] The limiting structure includes a rotating screw and a pressure plate rotatably connected to the front end of the screw. A protective pad is directly bonded to the back of the pressure plate. Several parallel anti-slip grooves are evenly formed on the back of the protective pad.

[0009] The protective pad is made of rubber, which has good elasticity and friction. The anti-slip groove has a depth of 1mm-3mm, a width of 3mm-10mm, and a groove spacing of 10mm-30mm. The design of the anti-slip groove increases the friction between the protective pad and the protective wall beam, effectively preventing the device from slipping due to external forces during use.

[0010] The rollers of the traveling mechanism are made of high-strength wear-resistant materials, such as polyurethane rubber or cast steel, and high-precision bearings such as deep groove ball bearings or tapered roller bearings are installed between the roller shaft and the wheel body.

[0011] The walking mechanism is connected to the main frame by bolts or welding.

[0012] The crossbeams and side frames are fixed together by welding.

[0013] The screw is made of high-strength alloy steel such as 40Cr or 35CrMo, and the retaining ring is made of high-strength alloy steel such as 30CrMnSi. The retaining ring is fitted onto the crossbeam. The wire rope is made of high-strength galvanized steel wire rope such as 6×37+IWR. The wire rope has high breaking strength and good corrosion resistance.

[0014] The other end of the wire rope is used to connect to the safety rope for workers to prevent them from falling, so as to ensure that the workers have enough room to move during the process, and at the same time, to pull the workers back in time in case of an accident to prevent them from falling.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The main frame of the device is designed as a portal frame structure and can slide up and down by being locked onto the protective wall beam. The walking mechanism fits the three sides of the protective wall beam. The structure is small and exquisite, the stress is simple, the installation and disassembly of each component is simple and easy to understand, and it is convenient to carry manually.

[0017] 2. When carrying out high-altitude construction near the edge of the bridge deck, workers can attach their safety belts to the steel wire rope of this device to ensure their own safety. When it is necessary to move the position, workers can easily remove the limiting structure of this device to achieve longitudinal sliding. It can quickly adapt to different positions, stages and working conditions of construction near the edge, reduce the time wasted due to the adjustment of protective facilities during the construction process, and improve the efficiency of construction near the edge.

[0018] 3. The limiting structure uses a combination of screw and pressure plate. By rotating the screw, the position of the pressure plate can be precisely adjusted, thus ensuring a tight fit with the "three walls" for effective limiting. The protective pad is made of rubber and has anti-slip grooves, which not only cushion and protect the surface of the "three walls" but also greatly increase the friction with the "three walls," effectively preventing accidental slippage of the device during construction. Whether on a smooth anti-collision wall or on the A and B walls with a certain degree of roughness, the device can be stably fixed in the appropriate position, providing reliable safety protection for construction personnel.

[0019] 4. The rollers of the traveling mechanism are made of high-strength wear-resistant materials, and high-precision bearings are installed between the roller shaft and the wheel body. This reduces the wear of the rollers when they move on the surface of the "three walls" and reduces the frequency of replacement due to roller damage, thereby extending the overall service life of the device. This not only saves the material cost of replacing the rollers, but also reduces the construction downtime caused by maintenance, indirectly improving construction efficiency and reducing the overall construction cost. Attached Figure Description

[0020] Figure 1 This is an installation diagram of the present invention;

[0021] Figure 2 This is a three-dimensional schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the limiting structure of this utility model;

[0023] Numbered in the diagram: 1. Protective wall beam; 2. Main frame; 21. Side frame; 22. Top frame; 23. Horizontal beam; 3. Walking mechanism; 4. Limiting structure; 41. Screw; 42. Pressure plate; 421. Back plate; 422. Protective pad; 423. Anti-slip groove; 5. Wire rope assembly; 51. Snap ring; 52. Wire rope. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] A movable safety fixing device for bridge edge work includes a main frame 2, a traveling mechanism 3, a limiting structure 4, and a wire rope assembly 5. The main frame 2 is a portal structure consisting of a top frame 22 and side frames 21 on both sides, which allows the main frame 2 to be stably locked onto the protective wall beam 1 and to slide up and down on the protective wall beam 1, adapting to the construction needs of protective wall beams 1 of different widths. The traveling mechanism 3 inside the main frame 2 fits against three sides of the protective wall beam 1. The traveling mechanism 3 is installed on the side frames 21 and the top frame 22 and adopts a roller structure. A crossbeam 23 is installed on the transverse axis of the side frames 21 of the main frame 2. The limiting structure 4 is installed on the crossbeam 23. The wire rope assembly 5 is sleeved on the crossbeam 23 and above the limiting structure 4.

[0026] The wire rope assembly 5 includes a retainer 51 and a wire rope 52. The retainer 51 is fitted onto the crossbeam 23. One end of the wire rope 52 is connected to the retainer 51, and the other end of the wire rope 52 is used to connect to a safety rope. The retainer 51 enables the wire rope 52 to be movably connected to the crossbeam 23.

[0027] The main frame 2 is made of square steel, and the square steel of the top frame 22 is all connected by welding.

[0028] The limiting structure 4 includes a rotating screw 41 and a pressure plate 42 rotatably connected to the front end of the screw 41. A protective pad 421 is directly bonded to the back of the pressure plate 42. Several parallel anti-slip grooves 422 are evenly provided on the back of the protective pad 421.

[0029] The protective pad 421 is made of rubber, which has good elasticity and friction. The anti-slip groove 422 has a depth of 1mm-3mm, a width of 3mm-10mm, and a groove spacing of 10mm-30mm. The design of the anti-slip groove 422 increases the friction between the protective pad 421 and the protective wall beam 1, effectively preventing the device from slipping due to external forces during use.

[0030] The rollers of the walking mechanism 3 are made of high-strength wear-resistant materials, such as polyurethane rubber or cast steel, and high-precision bearings such as deep groove ball bearings or tapered roller bearings are installed between the roller shaft and the wheel body.

[0031] The walking mechanism 3 is connected to the main frame 2 by bolts or welding.

[0032] The crossbeam 23 is fixed to the side frame 21 by welding.

[0033] The screw 41 is made of high-strength alloy steel such as 40Cr or 35CrMo. The retaining ring 51 is made of high-strength alloy steel such as 30CrMnSi and is fitted onto the crossbeam 23. The wire rope 52 is made of high-strength galvanized steel wire rope such as 6×37+IWR, which has high breaking strength and good corrosion resistance.

[0034] The other end of the steel wire rope 52 is used to connect to the safety rope for workers to prevent them from falling, so as to ensure that the workers have enough room to move during the process, and at the same time, to be able to pull the workers in time in case of an accident to prevent them from falling.

[0035] How to use:

[0036] 1. Construction workers should attach the hook of the safety belt to the safety rope to ensure that the safety belt is worn correctly and securely;

[0037] 2. During construction, construction workers can push the main frame 2 along the protective wall beam 1, allowing the main frame 2 to slide up and down on the protective wall beam 1. During the pushing process, care should be taken to keep it stable and avoid excessive force that may cause the device to shake or detach from the protective wall beam 1.

[0038] 3. When construction reaches the next hole, the construction personnel first disconnect the safety rope from the wire rope 52, then loosen the screw 41 on the limiting structure 4, so that the screw 41 drives the pressure plate 42 to detach from the protective wall beam 1, and release the limiting structure 4; then push the main frame 2 to slide longitudinally; after sliding to the appropriate position, reinstall the limiting structure 4 and connect the safety rope, and continue construction.

[0039] 4. If the device needs to be disassembled for individual use, the construction personnel can disassemble the components in reverse order, breaking the device down into a single main frame 2, walking mechanism 3, limiting structure 4, and wire rope assembly 5. Then, the individual devices can be installed in suitable positions for use according to actual construction needs.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A movable safety fixing device for bridge face edge operations, characterized in that: It includes a main frame, a walking mechanism, a limiting structure, and a wire rope assembly; the main frame consists of a top frame and two side frames forming a portal structure; the walking mechanism inside the main frame fits against three sides of the protective wall beam, and is installed on the side frames and the top frame, using a roller structure; a crossbeam is installed on the transverse axis of the side frames of the main frame, a limiting structure is installed on the crossbeam, and a wire rope assembly is fitted on the crossbeam and above the limiting structure.

2. The movable safety fixing device for bridge face edge operations according to claim 1, characterized in that: The wire rope assembly includes a shackle and a wire rope. The shackle is fitted onto the crossbeam, one end of the wire rope is connected to the shackle, and the other end of the wire rope is used to connect to a safety rope. The shackle enables a movable connection between the wire rope and the crossbeam.

3. The movable safety fixing device for bridge face edge operations according to claim 1, characterized in that: The main frame is made of square steel.

4. The movable safety fixing device for bridge face edge operations according to claim 1, characterized in that: The limiting structure includes a rotating screw and a pressure plate rotatably connected to the front end of the screw. A protective pad is directly bonded to the back of the pressure plate. Several parallel anti-slip grooves are evenly formed on the back of the protective pad.

5. The movable safety fixing device for bridge face edge operations according to claim 4, characterized in that: The protective pad is made of rubber, and the depth of the anti-slip groove is between 1mm and 3mm, the width is between 3mm and 10mm, and the groove spacing is between 10mm and 30mm.

6. The movable safety fixing device for bridge face edge operations according to claim 1, characterized in that: The rollers of the traveling mechanism are fitted with high-precision bearings such as deep groove ball bearings or tapered roller bearings between their shaft cores and wheel bodies.

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