A movable protection device for construction of a crash barrier wall of a viaduct

Abstract

The application discloses a kind of overhead bridge anti-collision wall construction mobile protection device, it is related to bridge construction equipment field, including two walking chassis, each the walking chassis is provided with support cantilever, the front end of the support cantilever is provided with a crane arm, multiple side-by-side arranged steel wires are provided between two crane arms, each the steel wire is arranged in L shape, and protective net is provided between adjacent two steel wires.The application suspends multiple protective nets in the side of bridge by support cantilever and crane arm, the horizontal part of multiple protective nets can be bottom protection, and the vertical part of multiple protective nets can protect the vertical surface;Bridge hanging basket trolley is carried out construction operation in the area between two walking chassis, after completing the construction of one section, the application can be transferred to next construction section with hanging basket trolley as a whole;The scheme provided by the application is overall convenient to move and operate, which helps to shorten construction time and reduce the safety risk of construction.

Description

Technical Field

[0001] This invention relates to the field of bridge construction equipment, and more particularly to a mobile protective device for the construction of anti-collision walls for elevated bridges. Background Technology

[0002] Bridge crash barriers, located on both sides of a bridge, are constructed of reinforced concrete and are an important component of the bridge. They not only provide safety for vehicles and pedestrians but also enhance the bridge's aesthetics. Bridge crash barriers are typically constructed by assembling formwork and then pouring concrete. The formwork consists of inner and outer sections; the inner formwork is installed on the inner side of the bridge, while the outer formwork is installed on the elevated facade on the outer side of the bridge.

[0003] The external formwork of crash barriers presents significant safety challenges for construction workers, particularly due to the high-altitude, face-to-face construction. To facilitate the installation and dismantling of the external formwork, existing technologies typically employ bridge-mounted formwork trolleys to assist workers in the construction process. A bridge-mounted formwork trolley is an integrated work platform combining a walking system and a track-based hoisting system. After completing one section of construction, the trolley can be moved as a whole to the next section, eliminating the cumbersome process of erecting scaffolding for protection, shortening the construction period, and offering advantages such as high safety, speed, convenience, and standardization.

[0004] Although the bridge hanging basket trolley facilitates construction for workers, the absence of scaffolding means that protective netting cannot be installed. Protective netting prevents welding sparks from steel reinforcement work, debris from falling during formwork installation and dismantling, and cement slurry from pouring guardrails. Without the protection of protective netting, the construction of the crash barrier significantly impacts the passage of vehicles and pedestrians under the bridge. To avoid this impact, two methods are typically used: (1) erecting scaffolding and installing protective netting on roads with high pedestrian and vehicle traffic; (2) changing the construction time to avoid peak traffic periods. Both methods affect the construction progress. Summary of the Invention

[0005] Based on the above problems, the purpose of this invention is to provide a mobile protective device for the construction of anti-collision walls for elevated bridges. The invention adopts the following technical solution:

[0006] This invention provides a mobile protective device for the construction of a crash barrier for elevated bridges, comprising two traveling chassis, each of which is equipped with a supporting cantilever, and a boom is provided at the front end of the supporting cantilever. Multiple steel wire ropes are arranged side by side between the two booms, and each steel wire rope is arranged in an L-shape. A protective net is provided between two adjacent steel wire ropes.

[0007] Preferably, the rear end of the supporting cantilever is connected to the walking chassis via a tilting frame. The tilting frame includes a frame, and the rear part of the bottom surface of the frame is movably connected to the walking chassis via a hinge seat. Limiting plates are provided on both sides of the front part of the bottom surface of the frame, and the limiting plates are fixed to the walking chassis. A hydraulic cylinder is provided in the frame, and the telescopic end of the hydraulic cylinder is hinged to the frame. The body of the hydraulic cylinder is hinged to the walking chassis.

[0008] Preferably, a walkway is provided at the top of the supporting cantilever, guardrails are provided on both sides of the walkway, and an opening is provided at the front end of the walkway.

[0009] Preferably, the boom is provided with a ladder, and the lower end of the boom is provided with a stepping platform.

[0010] Preferably, the boom is provided with a threaded post, and both ends of the wire rope are provided with connecting plates. The connecting plates are provided with connecting holes, and the connecting plates are fixed by nuts after being fitted onto the threaded post.

[0011] Preferably, the protective net is provided with a lifting ring on the side, and the lifting ring is sleeved on the wire rope.

[0012] Preferably, an extension arm is arranged parallel to the top of the wire rope, one end of the extension arm is connected to the front end of the support cantilever, and the other end of the extension arm is connected to the wire rope through a suspension rope.

[0013] Preferably, a counterweight is provided at the rear of the chassis, the counterweight is placed in a counterweight groove, and the counterweight groove is fixed to the chassis.

[0014] Preferably, the walking chassis is equipped with multiple hydraulic outriggers and a hydraulic pump station.

[0015] Preferably, the chassis is a wheeled chassis.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0017] This invention suspends multiple protective nets on the sides of a bridge using cantilever and boom supports. The horizontal section formed by the multiple nets provides bottom protection, while the vertical section provides facade protection. The bridge hanging basket trolley operates in the area between two traveling chassis. After completing one section, the invention can be moved to the next section along with the hanging basket trolley. The solution provided by this invention is easy to move and operate, helps to shorten construction time, and reduces construction safety risks. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the structure of the mobile protective device for the construction of the elevated bridge crash barrier of the present invention;

[0020] Figure 2 This is a schematic diagram of the single-sided support cantilever and boom of the present invention;

[0021] Figure 3 This is a schematic diagram of the connection structure between the wire rope and the boom of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection structure between the protective net and the steel wire rope of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Walking chassis; 2. Support cantilever; 3. Boom; 301. Ladder rod; 302. Stepping platform; 4. Wire rope; 5. Safety net; 501. Lifting ring; 6. Tilting frame; 601. Frame-type frame; 602. Hinge seat; 603. Limiting plate; 604. Hydraulic cylinder; 7. Walkway; 701. Guardrail; 702. Channel; 8. Threaded column; 9. Connecting plate; 901. Connecting hole; 10. Nut; 11. Extension arm; 12. Lifting rope; 13. Counterweight block; 1301. Counterweight groove; 14. Hydraulic outrigger. Detailed Implementation

[0024] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0027] like Figure 1 and2 As shown in the figure, this embodiment discloses a mobile protective device for the construction of an anti-collision wall for an elevated bridge, including two walking chassis 1, each walking chassis 1 is provided with a supporting cantilever 2, the front end of the supporting cantilever 2 is provided with a boom 3, and multiple steel wire ropes 4 arranged in parallel are arranged between the two booms 3. Each steel wire rope 4 is arranged in an L-shape, and a protective net 5 is provided between two adjacent steel wire ropes 4.

[0028] The protective netting 5 is suspended on the side of the bridge by supporting cantilever 2 and boom 3. The bridge hanging basket trolley performs construction work in the area between the two traveling chassis 1. After the construction of one section is completed, the mobile protective device in this embodiment can be transferred to the next construction section along with the hanging basket trolley. Multiple protective nets 5 are assembled together to form an L-shape. The horizontal part formed by multiple protective nets 5 can provide bottom protection, and the vertical part formed by multiple protective nets 5 can provide protection on the facade.

[0029] With the cantilever 2 and boom 3 suspended in mid-air, to ensure the stability of the traveling chassis 1, a counterweight 13 is provided at the rear of the traveling chassis 1 in this embodiment. The counterweight 13 is placed in a counterweight groove 1301, which is fixed to the traveling chassis 1. Simultaneously, multiple hydraulic outriggers 14 are provided on the traveling chassis 1, and a hydraulic pump station is installed on the traveling chassis 1. The hydraulic outriggers 14 are controlled by the hydraulic pump station. After the traveling chassis 1 moves into position, the hydraulic outriggers 14 extend and support the bridge deck. The traveling chassis 1 can be a wheeled chassis or a tracked chassis. The appropriate chassis type is selected according to the working environment.

[0030] To facilitate the recovery of the supporting cantilever 2 and boom 3, in this embodiment, as follows: Figure 2 As shown, the rear end of the support cantilever 2 is connected to the chassis 1 via a tilting frame 6. The tilting frame 6 includes a frame 601, and the rear end of the support cantilever 2 is fixed to the top of the frame 601. The rear part of the bottom surface of the frame 601 is movably connected to the chassis 1 via a hinge seat 602. Limiting plates 603 are provided on both sides of the front part of the bottom surface of the frame 601, and the limiting plates 603 are fixed to the chassis 1. A hydraulic cylinder 604 is provided in the frame 601. The telescopic end of the hydraulic cylinder 604 is hinged to the frame 601, and the body of the hydraulic cylinder 604 is hinged to the chassis 1. The hydraulic cylinder 604 is controlled by a hydraulic pump station on the chassis 1. By controlling the hydraulic cylinder 604, the support cantilever 2 and the boom 3 can be tilted and retracted.

[0031] Normally, the wire rope 4 and the protective net 5 need to be assembled onto the boom 3 on the bridge deck, and then the tilting frame 6 is controlled to move them to the suspended position. However, during construction, the connection between the wire rope and the boom 3 needs to be checked regularly. Therefore, in this embodiment, a walkway 7 is provided at the top of the supporting boom 2, and guardrails 701 are provided on both sides of the walkway 7. An opening 702 is provided at the front end of the walkway 7, through which one can enter the boom 3. In this embodiment, the boom 3 adopts the form of a ladder, with a ladder bar 301 provided on the boom 3, and a stepping platform 302 provided at the lower end of the boom 3.

[0032] like Figure 2 As shown, an extension arm 11 is arranged parallel to the upper part of the wire rope 4. One end of the extension arm 11 is fixedly connected to the front end of the supporting cantilever 2, and the other end of the extension arm 11 is connected to the wire rope 4 through a suspension rope 12. The suspension rope 12 is suspended on the wire rope 4, which can help improve the strength of the wire rope 4 and prevent the wire rope 4 from sagging.

[0033] like Figure 3 As shown, in this embodiment, the boom 3 is provided with multiple threaded posts 8, which are arranged in an L-shape. Both ends of the wire rope 4 are fixed with connecting plates 9. The connecting plates 9 are provided with connecting holes 901. After the connecting holes 901 are fitted onto the threaded posts 8, the connecting plates 9 are fixed by nuts 10.

[0034] like Figure 4 As shown, in this embodiment, a lifting ring 501 is provided on the side of the protective net 5, and the lifting ring 501 is sleeved on the wire rope 4. The lifting ring 501 facilitates the unfolding and retraction of the protective net 5. After the protective net 5 is unfolded, the end of the protective net 5 is fixed to the boom 3 by a binding rope to prevent the protective net 5 from retracting.

[0035] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A mobile protective device for the construction of a crash barrier for an elevated bridge, comprising two traveling chassis (1), each of the traveling chassis (1) being provided with a supporting cantilever (2), and the front end of the supporting cantilever (2) being provided with a boom (3), characterized in that: Multiple steel wire ropes (4) are arranged side by side between the two booms (3), and each steel wire rope (4) is arranged in an L-shape. A protective net (5) is set between two adjacent steel wire ropes (4). The rear end of the supporting cantilever (2) is connected to the walking chassis (1) through a tilting frame (6). The tilting frame (6) includes a frame (601). The rear part of the bottom surface of the frame (601) is movably connected to the walking chassis (1) through a hinge seat (602). Limiting plates (603) are provided on both sides of the front part of the bottom surface of the frame (601). The limiting plates (603) are fixed on the walking chassis (1). A hydraulic cylinder (604) is provided in the frame (601). The telescopic end of the hydraulic cylinder (604) is hinged to the frame (601). The body of the hydraulic cylinder (604) is hinged to the walking chassis (1). The wire rope (4) and the protective net (5) need to be assembled onto the boom (3) on the bridge deck, and then the tilting frame (6) is controlled to move to the suspended position.

2. The mobile protective device for the construction of an elevated bridge crash barrier according to claim 1, characterized in that: The top of the supporting cantilever (2) is provided with a walkway (7), and the two sides of the walkway (7) are provided with guardrails (701). The front end of the walkway (7) is provided with a channel (702).

3. The mobile protective device for the construction of an elevated bridge crash barrier according to claim 2, characterized in that: The boom (3) is provided with a ladder rod (301), and the lower end of the boom (3) is provided with a stepping platform (302).

4. The mobile protective device for the construction of an elevated bridge crash barrier according to claim 1, characterized in that: The boom (3) is provided with a threaded post (8), and both ends of the wire rope (4) are provided with connecting plates (9). The connecting plates (9) are provided with connecting holes (901). After the connecting holes (901) are fitted onto the threaded post (8), the connecting plates (9) are fixed by nuts (10).

5. The mobile protective device for the construction of an elevated bridge crash barrier according to claim 1, characterized in that: The protective net (5) is provided with a lifting ring (501) on its side, and the lifting ring (501) is sleeved on the wire rope (4).

6. The mobile protective device for the construction of an elevated bridge crash barrier according to claim 1, characterized in that: An extension arm (11) is arranged parallel above the wire rope (4). One end of the extension arm (11) is connected to the front end of the support cantilever (2), and the other end of the extension arm (11) is connected to the wire rope (4) through a suspension rope (12).

7. The mobile protective device for the construction of an elevated bridge crash barrier according to claim 1, characterized in that: The rear of the walking chassis (1) is provided with a counterweight (13), which is placed in a counterweight groove (1301) and the counterweight groove (1301) is fixed on the walking chassis (1).

8. The mobile protective device for the construction of an elevated bridge crash barrier according to claim 1, characterized in that: The walking chassis (1) is equipped with multiple hydraulic outriggers (14) and a hydraulic pump station.

9. The mobile protective device for the construction of an elevated bridge crash barrier according to claim 1, characterized in that: The chassis (1) is a wheeled chassis.

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