Safety protection structure for construction of large-span steel truss arch bridge

Abstract

The utility model relates to the technical field of bridge construction protection, in particular to a safety protection structure for construction of a large-span steel truss arch bridge, and adopts the technical scheme that the safety protection structure comprises a first protection box and a second protection box, a storage space is arranged in the first protection box, and a drawing storage box is mounted at the rear end of the first protection box; three through storage cavities are formed in the side end of the second protection box, rotating shafts extending to the upper end of the second protection box are rotationally installed in the storage cavities, winding and unwinding cylinders are arranged on the rotating shafts, the winding and unwinding cylinders are located in the storage cavities, and intercepting lock chains are wound on the winding and unwinding cylinders. And the tail end of the intercepting lock chain is welded and fixed to the side end of the first protection box, main buckles which are symmetrically distributed are installed at the side end of the second protection box, and sub buckles corresponding to the main buckles are installed at the side end of the first protection box. The protective warning device has the advantages that the protective warning device can be used for protective warning and road interception and has a good protective effect, and use of other equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction protection, in particular to a safety protection structure for the construction of a large-span steel truss arch bridge. Background Art

[0002] A long-span steel truss arch bridge is an arch bridge that uses a steel truss structure as its primary load-bearing system and spans a large transverse span. "Long span" generally refers to bridges with a transverse span of more than 30 meters. A long-span steel truss arch bridge is an arch bridge that uses a steel truss structure as its primary load-bearing system and spans a large transverse span. "Long span" generally refers to bridges with a transverse span of more than 30 meters.

[0003] During the construction of large-span steel truss arch bridges, warning signs need to be erected on the construction section for protection to prevent people from walking or vehicles from driving onto the bridge under construction. Currently, the safety protection structures used in the construction of large-span steel truss arch bridges are mainly protective warning signs, which can only serve as warnings and reminders. The functions are relatively simple, and other equipment is needed for road interception. Utility Model Content

[0004] The purpose of the present utility model is to provide a safety protection structure for the construction of a large-span steel truss arch bridge, which can not only be used as a protective warning, but also can be used for road interception, has a good protective effect, reduces the use of other equipment, and solves the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a safety protection structure for the construction of a large-span steel truss arch bridge, comprising a first protection box and a second protection box, wherein a storage space is provided in the first protection box, and a pull-out storage box is installed at the rear end of the first protection box, and there are three pull-out storage boxes, and a handle is installed at the front end of the pull-out storage box, and a through storage cavity is opened at the side end of the second protection box, and there are three storage cavities, and a rotating shaft extending to the upper end of the second protection box is rotatably installed in the storage cavity, and a winding drum is provided on the rotating shaft, and the winding drum is located in the storage cavity, and an interception chain is wound on the winding drum, and the end of the interception chain is welded and fixed to the side end of the first protection box, and main buckles that are symmetrically distributed are installed on the side end of the second protection box, and sub-buckles corresponding to the main buckles are installed on the side end of the first protection box.

[0006] When using the utility model as a safety protection structure for the construction of a large-span steel truss arch bridge, the pull-out storage box is used to store the fixings of the base plate, and can also store other items. During the construction of the large-span steel truss arch bridge, the utility model is set on the construction entrance section. First, the second protection box is set on one side of the entrance section, the nut is loosened to lower the base plate, and the second protection box is installed and fixed through the fixing parts and the first mounting hole on the base plate. Then, the first protection box is pulled to the other side of the road, so that the interception chain can be unwound on the winding drum. The interception chain can intercept the entrance section, and the reflective warning sign can be used to provide protection and warning to people and vehicles. When the utility model is not in use, the first protection box and the second protection box are connected to each other, so that the sub-buckle is clamped and fixed in the main buckle, and the interception chain is rewound onto the winding drum.

[0007] Preferably, the front ends of the first and second protective boxes are both provided with reflective warning signs, which are used to warn and remind unauthorized persons and vehicles.

[0008] Preferably, the side ends of the first protective box and the second protective box are both installed with symmetrically distributed mounting plates, the mounting plates are provided with first mounting holes, and threaded rods are inserted into the first mounting holes.

[0009] Preferably, a nut is threadedly mounted on the upper portion of the threaded rod, a base plate is mounted on the lower end of the threaded rod, and a second mounting hole is provided on the base plate. The nut is used to limit the height of the base plate.

[0010] Preferably, a rotating handle is installed at the upper end of the rotating shaft, and the rotating handle is located above the second protection box. The rotating handle is used to reel in the interception chain.

[0011] Preferably, the lower ends of the first and second protective boxes are both equipped with moving wheels, and four moving wheels are provided and distributed in an array. The provision of the moving wheels can facilitate the movement of the utility model.

[0012] Preferably, the sub-clip includes a mounting block having mounting slots formed at both the upper and lower ends thereof, a spring mounted within the mounting slot, and a positioning plate mounted at the end of the spring. When the sub-clip is released from the main clip, the positioning plate is manually installed and pressed until it is seated within the main clip, allowing the first and second protective boxes to be separated.

[0013] Preferably, a damping telescopic rod is provided in the spring, and both ends of the damping telescopic rod are respectively welded and fixed to the mounting block and the positioning plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention is used for protection and warning, the first protection box and the second protection box are pulled apart and respectively set on both sides of the construction entrance section, and the interception chain can intercept the construction entrance to prevent unrelated personnel and vehicles from entering by mistake. It can not only be used as a protection and warning, but also can be used for road interception, has a better protection effect, and reduces the use of other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural diagram of the utility model;

[0016] Figure 2 This is a rear view structural diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the buckle structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the sub-buckle of the present utility model;

[0019] Figure 5 This is a schematic cross-sectional view of the second protective box of the present invention.

[0020] The reference numerals and names in the figures are as follows:

[0021] 101. First protective box; 102. Pull-out storage box; 103. Handle; 201. Second protective box; 202. Reflective warning sign; 203. Storage cavity; 204. Rotating shaft; 205. Winding drum; 206. Rotating handle; 207. Intercepting chain; 301. Mounting plate; 302. Base plate; 303. Threaded rod; 304. Nut; 401. Main buckle; 402. Sub-buckle; 403. Mounting block; 404. Mounting slot; 405. Spring; 406. Damping telescopic rod; 407. Positioning plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example

[0024] See also Figures 1 to 5 The present invention provides an embodiment of a safety protection structure for the construction of a large-span steel truss arch bridge, comprising:

[0025] The first protective box 101 and the second protective box 201, the first protective box 101 is provided with a storage space, the rear end of the first protective box 101 is installed with a pull-out storage box 102, there are three pull-out storage boxes 102, and the front end of the pull-out storage box 102 is installed with a handle 103, the side end of the second protective box 201 is provided with a through storage cavity 203, there are three storage cavities 203, a rotating shaft 204 extending to the upper end of the second protective box 201 is rotatably installed in the storage cavity 203, the rotating shaft 204 is provided with a winding drum 205, the winding drum 205 is located in the storage cavity 203, an intercepting chain 207 is wound on the winding drum 205, and the end of the intercepting chain 207 is welded and fixed to the side end of the first protective box 101, the side end of the second protective box 201 is installed with symmetrically distributed main buckles 401, and the side end of the first protective box 101 is installed with sub-buckles 402 corresponding to the main buckles 401.

[0026] In this embodiment, the pull-out storage box 102 is used to store the fixings of the base plate 302, and can also store other items. During the construction of a large-span steel truss arch bridge, the utility model is set in the construction entrance section. First, the second protective box 201 is set on one side of the entrance section, and the nut 304 is loosened to lower the base plate 302. The second protective box 201 is installed and fixed by the fixing parts cooperating with the first mounting hole on the base plate 302. Then, the first protective box 101 is pulled to the other side of the road, so that the interception chain 207 can be unwound on the winding drum 205. The interception chain 207 can intercept the entrance section, and the reflective warning sign 202 can be used to protect and warn people and vehicles. When the utility model is not in use, the first protective box 101 and the second protective box 201 are connected to each other, so that the sub-buckle 402 is clamped and fixed in the main buckle 401, and the interception chain 207 is rewound onto the winding drum 205.

[0027] Furthermore, the front ends of the first protection box 101 and the second protection box 201 are both provided with reflective warning signs 202 .

[0028] Furthermore, symmetrically distributed mounting plates 301 are installed on the side ends of the first protective box 101 and the second protective box 201 . First mounting holes are opened on the mounting plates 301 , and threaded rods 303 are inserted into the first mounting holes.

[0029] Furthermore, a nut 304 is threadedly installed at the upper position of the threaded rod 303 , and a base plate 302 is installed at the lower end of the threaded rod 303 , and a second mounting hole is opened on the base plate 302 .

[0030] Furthermore, a rotating handle 206 is installed at the upper end of the rotating shaft 204 , and the rotating handle 206 is located above the second protective box 201 .

[0031] Furthermore, the lower ends of the first protection box 101 and the second protection box 201 are both equipped with moving wheels, and four moving wheels are arranged in an array.

[0032] Furthermore, the sub-clip 402 includes a mounting block 403 , and mounting grooves 404 are provided at the upper and lower ends of the mounting block 403 . A spring 405 is installed in the mounting groove 404 , and a positioning plate 407 is installed at the end of the spring 405 .

[0033] Furthermore, a damping telescopic rod 406 is provided in the spring 405 , and both ends of the damping telescopic rod 406 are respectively welded and fixed to the mounting block 403 and the positioning plate 407 .

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A safety protection structure for the construction of a long-span steel truss arch bridge, comprising a first protection box (101) and a second protection box (201), characterized in that: The first protective box (101) is provided with a storage space, a pull-out storage box (102) is installed at the rear end of the first protective box (101), three pull-out storage boxes (102) are provided, and a handle (103) is installed at the front end of the pull-out storage box (102). The side end of the second protective box (201) is provided with a through storage cavity (203), three storage cavities (203) are provided, and a rotating shaft (204) extending to the upper end of the second protective box (201) is rotatably installed in the storage cavity (203). A reel (205) is provided on the rotating shaft (204), and the reel (205) is located in the storage cavity (203). An interception chain (207) is reeled on the reel (205), and the end of the interception chain (207) is welded and fixed to the side end of the first protection box (101). The side end of the second protection box (201) is equipped with main buckles (401) that are symmetrically distributed, and the side end of the first protection box (101) is equipped with sub-buckles (402) corresponding to the main buckles (401).

2. The safety protection structure for the construction of a long-span steel truss arch bridge according to claim 1, characterized in that: The front ends of the first protection box (101) and the second protection box (201) are both provided with reflective warning signs (202).

3. The safety protection structure for the construction of a large-span steel truss arch bridge according to claim 1, characterized in that: The side ends of the first protection box (101) and the second protection box (201) are both installed with symmetrically distributed mounting plates (301), and the mounting plates (301) are provided with first mounting holes, and threaded rods (303) are inserted into the first mounting holes.

4. The safety protection structure for the construction of a large-span steel truss arch bridge according to claim 3, characterized in that: A nut (304) is threadedly mounted at the upper portion of the threaded rod (303), a base plate (302) is mounted at the lower end of the threaded rod (303), and a second mounting hole is provided on the base plate (302).

5. The safety protection structure for the construction of a large-span steel truss arch bridge according to claim 1, characterized in that: A rotating handle (206) is installed at the upper end of the rotating shaft (204), and the rotating handle (206) is located above the second protection box (201).

6. The safety protection structure for the construction of a large-span steel truss arch bridge according to claim 1, characterized in that: The lower ends of the first protection box (101) and the second protection box (201) are both equipped with moving wheels, and four moving wheels are arranged in an array.

7. The safety protection structure for the construction of a large-span steel truss arch bridge according to claim 1, characterized in that: The sub-clip (402) includes a mounting block (403), the upper end and the lower end of the mounting block (403) are both provided with mounting grooves (404), a spring (405) is installed in the mounting groove (404), and a positioning plate (407) is installed at the end of the spring (405).

8. The safety protection structure for the construction of a long-span steel truss arch bridge according to claim 7, characterized in that: A damping telescopic rod (406) is provided in the spring (405), and two ends of the damping telescopic rod (406) are respectively welded and fixed to the mounting block (403) and the positioning plate (407).

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