Anti-falling device for bridge construction

Abstract

The anti-falling device for bridge construction comprises a bottom plate, vertically upward positioning columns are fixedly arranged at the four corners of the top of the bottom plate, a positioning ball is fixedly arranged at one end of the top of each positioning column, and fixing frames are fixedly arranged at the four corners of the bottom of the bottom plate through supports. Telescopic rods distributed at equal intervals are fixedly arranged at the four corners of the top of the fixing frame, rope sleeves are fixedly arranged on the outer walls of the tops and the outer walls of the bottoms of the telescopic rods, and anti-falling nets are fixedly arranged between the adjacent telescopic rods through the rope sleeves. The positioning rod is pulled upwards by lifting the handle, one end of the positioning rod slides on the inner wall of the sliding groove, then the sliding insertion rod inserted into the inner wall of the sliding sleeve rod is inserted into the inner wall of the positioning hole, the four telescopic rods stretch out to unfold the anti-falling net arranged on the periphery of the bottom plate, and the anti-falling net is installed on the bottom plate and can be unfolded in a short time. The positioning rod is moved downwards by lifting the handle, the height of the anti-falling net is lowered to be folded, and operators can enter and exit conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to an anti-fall device for bridge construction. Background Art

[0002] With the development of cities, urban traffic congestion has intensified, and it is necessary to build viaducts on the original traffic road surface. During the construction of the viaduct, not only a drainage system but also indicator lights must be installed at the bottom. This requires the use of engineering vehicles using lifting arms to drive the working frame to move to the bottom of the bridge and install equipment at the bottom of the bridge.

[0003] However, the existing working frame has a simple structure, and an anti-fall net is installed on the edge of the working frame. The installation of the anti-fall net takes a lot of time, and after the anti-fall net is installed, it is inconvenient for workers to enter and exit the working frame. For this reason, we propose an anti-fall device for bridge construction. Utility Model Content

[0004] The purpose of the utility model is to provide a fall prevention device for bridge construction to solve the above-mentioned technical deficiencies.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of anti-fall device for bridge construction, comprises a base plate, the top four corners of the base plate are fixedly provided with vertically upward positioning columns, the top one end of the positioning column is fixedly provided with a positioning ball, the bottom four corners of the base plate are fixedly provided with a fixing frame through a bracket, the top four corners of the fixing frame are fixedly provided with telescopic rods distributed at equal intervals, the top outer wall and the bottom outer wall of the telescopic rod are fixedly provided with a rope loop, an anti-fall net is fixedly provided between adjacent telescopic rods through the rope loop, a positioning rod is fixedly provided at the top end of the telescopic rod, a lifting handle is fixedly provided at the top end of the positioning rod, a sliding sleeve is fixedly provided on the top outer wall of the lifting handle, a sliding plug rod is slidably connected to the inner wall of the sliding sleeve, a vertical sliding groove is opened on the outer wall of one side of the four positioning columns, a positioning hole is opened on the outer wall of one side of the four positioning balls, the outer wall of one end of the positioning rod is slidably connected to the inner wall of the sliding groove, and the inner wall of the positioning hole is matched with the inner and outer walls of one end of the sliding plug rod.

[0006] Preferably, grille fences are fixedly provided around the top of the base plate at equal distances, the grille fences are connected to the top outer walls of the positioning columns via fixing rods, and the gap between adjacent grille fences is 150 mm.

[0007] Preferably, a protective net is installed between the inner wall of the fixed frame and the inner wall of the bottom plate, an inlet and outlet are opened on one side of the protective net, and a grille door is movably connected to one side of the inlet and outlet through a grille fence using a rotating shaft.

[0008] Preferably, mounting plates are fixedly provided on the outer walls at the four corners of the bottom of the base plate, and mounting columns pointing vertically downward are fixedly provided on the outer walls at the bottom of the mounting plates. Positioning is performed by the mounting columns, so that the utility model can be easily installed on the lifting arm.

[0009] Preferably, the mesh diameter of the anti-fall net is 8-10 mm, and the net rope of the anti-fall net is made of 6 single ropes.

[0010] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0011] The positioning rod is pulled upward by pulling the handle, and one end of the positioning rod slides on the inner wall of the slide groove. Then the sliding rod connected to the inner wall of the sliding sleeve rod is inserted into the inner wall of the positioning hole. The four telescopic rods are extended to unfold the anti-fall net provided around the bottom plate. The anti-fall net is installed on the bottom plate and can be unfolded in a short time. The positioning rod is moved downward by pulling the handle, and the anti-fall net is lowered and folded to facilitate the operator to enter and exit. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a bridge construction anti-fall device of the utility model;

[0014] Figure 2 This is a schematic diagram of the telescopic rod structure of a bridge construction anti-fall device of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of an anti-fall device for bridge construction according to the utility model when viewed from above;

[0016] Figure 4 The utility model is a bridge construction anti-fall device Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0017] Figure 5 The utility model is a bridge construction anti-fall device Figure 3 Schematic diagram of the enlarged structure of part B in the middle.

[0018] Description of reference numerals:

[0019] 1 bottom plate, 2 positioning column, 3 grille fence, 4 grille door, 5 fixing frame, 6 telescopic rod, 7 anti-fall net, 8 positioning rod, 9 lifting handle, 10 sliding sleeve, 11 sliding plug rod, 12 positioning ball, 13 positioning hole, 14 slide groove, 15 mounting plate, 16 mounting column, 17 protective net. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Embodiment 1

[0022] Refer to the instruction manual Figure 1-5 , a bridge construction anti-fall device comprises a base plate 1, the top four corners of the base plate 1 are fixed with vertical positioning columns 2, one end of the top of the positioning column 2 is fixed with a positioning ball 12, the bottom four corners of the base plate 1 are fixed with a fixing frame 5 through a bracket, the top four corners of the fixing frame 5 are fixed with telescopic rods 6 distributed at equal intervals, the top outer wall and the bottom outer wall of the telescopic rod 6 are fixed with rope loops, and an anti-fall net 7 is fixed between adjacent telescopic rods 6 through rope loops, a positioning rod 8 is fixed at one end of the top of the telescopic rod 6, a lifting handle 9 is fixed at one end of the top of the positioning rod 8, a sliding sleeve 10 is fixed at the top outer wall of the lifting handle 9, and a sliding plug rod 11 is slidably connected to the inner wall of the sliding sleeve 10, a vertical slide groove 14 is opened on the outer wall of one side of the four positioning columns 2, and a positioning hole 13 is opened on the outer wall of one side of the four positioning balls 12, the outer wall of one end of the positioning rod 8 is slidably connected to the inner wall of the slide groove 14, and the inner wall of the positioning hole 13 is matched with the inner and outer walls of one end of the sliding plug rod 11.

[0023] Embodiment 2

[0024] Based on the first embodiment, grille fences 3 are fixedly arranged with equal distances around the top of the base plate 1. The grille fences 3 and the top outer walls of the positioning columns 2 are connected to each other through fixing rods. The gap between adjacent grille fences 3 is 150 mm. The mesh diameter of the anti-fall net 7 is 8-10 mm, and the net rope of the anti-fall net 7 is made of 6 single ropes.

[0025] Embodiment 3

[0026] Based on the first embodiment, a protective net 17 is installed between the inner wall of the fixed frame 5 and the inner wall of the base plate 1, an inlet and outlet are opened on one side of the protective net 17, and a grille door 4 is movably connected to the grille fence 3 on one side using a rotating shaft. Mounting plates 15 are fixedly provided on the outer walls of the four bottom corners of the base plate 1, and vertical downward mounting columns 16 are fixedly provided on the bottom outer wall of the mounting plate 15. The mounting columns 16 are used for positioning, so that the utility model can be easily installed on the lifting arm.

[0027] Working principle of this utility model:

[0028] Refer to the instruction manual Figure 1-5 When the utility model is in use, it is installed on the lifting arm of the engineering vehicle through the mounting column 16 provided at the bottom of the mounting plate 15. The bridge construction personnel open the grille door 4 and enter the top of the base plate 1, then close the grille door 4, and pull the positioning rod 8 upwards by pulling the handle 9. One end of the positioning rod 8 slides on the inner wall of the slide groove 14, and then the sliding plug rod 11 inserted into the inner wall of the sliding sleeve rod 10 is inserted into the inner wall of the positioning hole 13. The four telescopic rods 6 are extended to unfold the anti-fall net 7 provided around the base plate 1. The anti-fall net 7 can prevent tools from falling from a high altitude during the construction process, and prevent construction personnel from falling, with a good safety effect. When the construction personnel need to go out, the sliding plug rod 11 is pulled out from the inner wall of the positioning hole 13, and the positioning rod 8 is moved downward by pulling the handle 9. The anti-fall net 7 is lowered and folded, which is convenient for operators to enter and exit.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fall prevention device for bridge construction, comprising a bottom plate (1), characterized in that: The top four corners of the base plate (1) are fixed with vertically upward positioning columns (2), one end of the top of the positioning columns (2) is fixed with a positioning ball (12), the bottom four corners of the base plate (1) are fixed with a fixing frame (5) through a bracket, the top four corners of the fixing frame (5) are fixed with telescopic rods (6) distributed at equal intervals, the top outer wall and the bottom outer wall of the telescopic rod (6) are fixed with rope loops, an anti-falling net (7) is fixed between adjacent telescopic rods (6) through rope loops, and one end of the top of the telescopic rod (6) is fixed with a positioning rod (8). A lifting handle (9) is fixedly provided at one end of the top of the positioning rod (8), a sliding sleeve (10) is fixedly provided on the top outer wall of the lifting handle (9), the inner wall of the sliding sleeve (10) is slidably connected with a sliding rod (11), a vertical sliding groove (14) is opened on one side outer wall of the four positioning columns (2), a positioning hole (13) is opened on one side outer wall of the four positioning balls (12), the outer wall of one end of the positioning rod (8) is slidably connected with the inner wall of the sliding groove (14), and the inner wall of the positioning hole (13) is matched with the inner and outer walls of one end of the sliding rod (11).

2. The anti-fall device for bridge construction according to claim 1, characterized in that: The top of the base plate (1) is fixed with equidistantly distributed grille fences (3), the grille fences (3) and the top outer walls of the positioning columns (2) are connected to each other via fixing rods, and the gap between adjacent grille fences (3) is 150 mm.

3. The anti-fall device for bridge construction according to claim 2, characterized in that: A protective net (17) is installed between the inner wall of the fixed frame (5) and the inner wall of the bottom plate (1), an inlet and outlet are opened on one side of the protective net (17), and a grille door (4) is movably connected to one side of the inlet and outlet through a grille fence (3) using a rotating shaft.

4. The anti-fall device for bridge construction according to claim 1, characterized in that: The outer walls at the four corners of the bottom of the base plate (1) are fixed with mounting plates (15), and the outer wall at the bottom of the mounting plate (15) is fixed with mounting columns (16) extending vertically downward.

5. The anti-fall device for bridge construction according to claim 1, characterized in that: The mesh diameter of the anti-falling net (7) is 8-10 mm, and the net rope of the anti-falling net (7) is made of 6 single ropes.

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