External hanging type self-balancing movable cantilever operation platform

Abstract

The utility model discloses an externally-hung type self-balancing movable cantilever operation platform which comprises two oppositely-arranged supporting cross beams, a connecting plate is connected with a platform bottom plate laid in the length direction of the supporting cross beams through bolts, and platform guardrails located on the outer sides of the three faces of the platform bottom plate are arranged on the upper portions of the two supporting cross beams. One end of the supporting cross beam is fixedly connected with a vertical beam which extends upwards and is provided with a ladder stand on one side, the upper end of the vertical beam is fixedly connected with a cantilever beam, the side, close to the vertical beam, of the cantilever beam is fixedly connected with a limiting component, the limiting component comprises a limiting plate which is fixedly connected with the cantilever beam and is parallel to the vertical beam, and a rolling wheel is rotationally connected between the upper end of the limiting plate and the vertical beam. The lower end of the limiting plate is in threaded connection with a limiting stud with one end provided with a handle, and the end, facing the vertical beam, of the limiting stud is fixedly connected with an abutting plate so that the operation platform can abut against and be fixed to the bridge. The steel beam welding device meets the requirement of overhanging operation, is convenient to move, and can ensure the safety of workers and improve the welding efficiency of steel beams.

Description

Technical Field

[0001] The utility model relates to the technical field of construction platforms, in particular to an externally hung self-balancing movable cantilever operation platform. Background Art

[0002] As an important part of highway, railway, and municipal road projects, bridge engineering construction requires construction enterprises to further adopt advanced and reasonable standardized construction technologies on the premise of ensuring construction safety and quality. Among them, high-altitude work on the edge of steel box girders is relatively common, especially in construction environments such as crossing rivers, cross-rivers, cross-lines, and cross-roads. The safety of construction workers must be guaranteed. Especially when welding steel beam segments, welding work needs to be carried out below the steel beam of the worker. The on-site construction is quite difficult. It is necessary to ensure the safety of the workers during construction while preventing the construction environment from having an adverse impact on the welding work and ensuring the welding quality.

[0003] However, due to the influence of the high-altitude construction environment on the edge, it is not convenient to set up a movable operation platform during the welding of steel beam segments. Traditional hanging baskets and fixed operation platforms not only have certain safety risks, but also the erection process is quite cumbersome and not easy to move according to the construction position, increasing the construction time and affecting the welding work efficiency of the steel beam. In addition, since there is no suitable hanging point for the safety belt, there are relatively large problems in the safety guarantee of construction workers, and it is difficult to ensure the safety of construction workers and the welding quality of the steel beam. Content of the Utility Model

[0004] In order to solve the technical problems in the prior art that the operation platform during the welding of steel beam segments is not convenient to move according to the construction position, affecting the welding work efficiency of the steel beam, and it is difficult to ensure the safety of workers and the welding quality of the steel beam, the utility model provides the following technical solutions.

[0005] The externally hung self-balancing movable cantilever operation platform of the utility model includes two support crossbeams that are oppositely arranged and fixedly connected by a plurality of connecting plates. The connecting plates are bolted with a platform bottom plate laid along the length direction of the support crossbeams. On the upper parts of the two support crossbeams, there is a platform guardrail located on the three outer sides of the platform bottom plate. One end of the support crossbeam is fixedly connected with a vertical beam with a ladder on one side extending upward. The upper end of the vertical beam is fixedly connected with a cantilever beam. A limiting component is fixedly connected to the side of the cantilever beam close to the vertical beam. The limiting component includes a limiting plate fixedly connected to the cantilever beam and parallel to the vertical beam. A rolling wheel is rotatably connected between the upper end of the limiting plate and the vertical beam. The lower end of the limiting plate is threadedly connected with a limiting screw with a handle at one end. One end of the limiting screw facing the vertical beam is fixedly connected with a pressing plate to facilitate the tight fixation of the operation platform to the steel beam.

[0006] As a further technical solution, lower ladder guardrails are provided on the outer sides of the lower parts of the two ladders.

[0007] As a further technical solution, a number of annularly distributed blind holes are provided in the direction of the rolling wheel towards the limiting plate, the limiting plate is provided with a limiting through hole consistent with the axis of the blind hole, and the limiting through hole is connected with a plug pin.

[0008] As a further technical solution, a balance frame is fixedly connected to one end of the cantilever beam away from the vertical beam.

[0009] As a further technical solution, a reinforcing plate fixedly connected to the vertical beam is fixedly connected to the upper part of the side of the cantilever beam close to the vertical beam.

[0010] As a further technical solution, the pressing plate has a wear-resistant side surface.

[0011] The beneficial effects of the present utility model: The working platform of the present utility model adopts basic mechanical principles, uses the existing steel beam as a suspension point, and forms a self-balancing system with the construction load and self-weight borne by the entire working platform in the form of a downward positive pressure through the self-weight and suspension form of the working platform, avoiding the use of a rear counterweight form for anti-overturning. The limiting component can stably limit and fix the working platform and the steel beam, the rolling wheel facilitates the movement of the working platform, and at the same time combines the traditional mobile working platform and the cantilever working platform, meeting the requirements of cantilever operation and being easy to move. The profiled steel materials required for the platform are easy to obtain, easy to process, have a light overall weight, are easy to install, ensure the safety of workers, and improve the welding efficiency of the steel beam. Description of the Drawings

[0012] Figure 1 is a structural schematic diagram of the present utility model;

[0013] Figure 2 is a structural schematic diagram of another perspective of the present utility model;

[0014] Figure 3 is a structural schematic diagram of the limiting component of the present utility model;

[0015] In the figure: 1 - support cross beam; 101 - reinforcing rod; 102 - platform guardrail; 103 - connecting plate; 2 - platform bottom plate; 3 - vertical beam; 4 - ladder; 401 - lower ladder guardrail; 5 - cantilever beam; 6 - reinforcing plate; 7 - limiting component; 701 - limiting plate; 702 - limiting stud; 703 - handle; 704 - pressing plate; 705 - limiting through hole; 706 - plug pin; 8 - rolling wheel; 801 - blind hole; 9 - balance frame. Detailed Embodiments

[0016] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0017] In the description of the present utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0018] As Figure 1 and Figure 2 shown, an external hanging self-balancing movable cantilever working platform of the present utility model is used to be suspended above a steel beam, and workers below the working platform perform welding work on the lower side of the steel beam. It includes two relatively arranged support crossbeams 1, and several connecting plates 103 are used to connect and fix between the two support crossbeams 1. The connecting plate 103 is bolted with a platform bottom plate 2 laid along the length direction of the support crossbeam 1. The platform bottom plate 2 can be made of steel plate or wood board. After being bolted to the connecting plate 103, the platform bottom plate 2 serves as a load-bearing structure for construction workers and welding machines to perform welding work on the steel beam on the platform bottom plate 2.

[0019] In a preferred embodiment, platform guardrails 102 are provided on the upper parts of the two support crossbeams 1. The platform guardrails 102 are welded by steel pipes and are located on the outer sides of three sides of the platform bottom plate 2 to provide protection for construction workers. One end of the support crossbeam 1 is fixedly connected with a vertical beam 3 extending upward. A ladder 4 is provided on one side of the vertical beam 3. Lower ladder guardrails 401 are provided on the outer sides of the lower parts of the two ladders 4. The lower ladder guardrails 401 are made of square steel and are welded to the outer sides of the ladders 4 to provide protection for construction workers when going up and down the ladders, and at the same time, when construction workers perform welding work on the platform bottom plate 2, they supplement the side of the platform bottom plate 2 where the platform guardrails 102 are not protected.

[0020] The upper end of the vertical beam 3 is fixedly connected with a cantilever beam 5, and the supporting cross beam 1, the vertical beam 3 and the cantilever beam 5 are all made of channel steel. The vertical beam 3 is in a vertical state, and the cantilever beam 5 is vertically welded and fixed to the vertical beam 3. The cantilever beam 5 is fixedly connected to the side close to the vertical beam 3 with a limiting component 7, thereby, the vertical beam 3, the cantilever beam 5 and the limiting component 7 can form a "冂" type structure, which can be straddled at the suspension on one side of the upper part of the steel beam. The structure uses the existing steel beam as the suspension point, and forms a self-balancing system in the form of downward positive pressure by the work platform's own gravity and suspension form, avoiding the use of rear counterweights for anti-overturning.

[0021] The limiting component 7 includes a limiting plate 701 which is fixedly connected to the cantilever beam 5 and parallel to the vertical beam 3. The limiting plate 701 forms a "冂" type structure with the vertical beam 3 and the cantilever beam 5. The lower end of the limiting plate 701 is threadedly connected to a limiting stud 702 with a handle 703 at one end. The limiting stud 702 is fixedly connected to a tightening plate 704 toward one end of the vertical beam 3, and the tightening plate 704 has a wear-resistant side. After the "冂" type structure is straddled at the hanging part on one side of the upper part of the steel beam, the handle 703 is twisted, and the rotating limiting stud 702 drives the tightening plate 704 to move toward the hanging part of the steel beam, so that it is tightly fixed with the hanging part of the steel beam, so that the construction personnel can go up and down and perform welding work on the entire working platform. In order to improve the connection stability of the cantilever beam 5 and the vertical beam 3, the upper part of the cantilever beam 5 close to the vertical beam 3 is fixedly connected to a reinforcing plate 6 fixedly connected to the vertical beam 3, and the reinforcing plate 6 is respectively welded and fixed to the vertical beam 3 and the cantilever beam 5.

[0022] A rolling wheel 8 is rotatably connected between the upper end of the limit plate 701 and the vertical beam 3. The rolling wheel 8 is used to move the entire working platform. After one welding position is completed, the cantilever beam 5 can be pushed to make the rolling wheel 8 roll on the steel beam, so that the entire working platform moves to the next welding position.

[0023] In a preferred embodiment, the rolling wheel 8 is provided with a plurality of annularly distributed blind holes 801 in the direction of the limiting plate 701. The blind holes 801 are distributed in an annular array with the axis of the rolling wheel 8 as the axis center. The limiting plate 701 is provided with a limiting through hole 705 consistent with the axis of the blind hole 801. The limiting through hole 705 is connected with a latch 706. After the rolling wheel 8 drives the entire working platform to move to a suitable position, the latch 706 is inserted into the limiting through hole 705 and the blind hole 801 to prevent the rolling wheel 8 from continuing to rotate. Then the limiting component 7 fixes the working platform. The end of the cantilever beam 5 away from the vertical beam 3 is fixedly connected with a balancing frame 9. The balancing frame 9 can be placed with a counterweight to provide balance for the entire platform when the entire platform is pushed to roll.

[0024] When the utility model is used, it is hoisted by using a hoisting device, so that the "冂"-shaped structure formed by the limit plate 701, the vertical beam 3 and the cantilever beam 5 is set across the hanging place of the steel beam, and the handle 703 is turned, and the rotating limit stud 702 drives the abutting plate 704 to move toward the hanging place of the steel beam, so that it is tightly fixed with the hanging place of the steel beam, and the worker enters the platform bottom plate 2 from the ladder 4 to perform welding work. After the welding is completed, the counterweight block is placed on the balance frame, and the handle 703 is turned, and the abutting plate 704 moves in the opposite direction of the hanging place of the steel beam to release the abutting state, and then the cantilever beam 5 can be pushed to make the rolling wheel 8 roll on the steel beam. After the rolling wheel 8 drives the entire working platform to move to a suitable position, the latch 706 is inserted into the limit through hole 705 and the blind hole 801 to prevent the rolling wheel 8 from continuing to rotate, and then the limit component 7 fixes the working platform to perform welding work.

[0025] The preferred specific implementation modes and embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation modes and embodiments, and various changes or equivalent substitutions can be made within the knowledge scope of those skilled in the art without departing from the concept of the utility model. Therefore, the utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the utility model.

Claims

1. An external self-balancing movable cantilever working platform, characterized in that: It includes two support crossbeams (1) which are oppositely arranged and fixedly connected by a plurality of connecting plates (103). The connecting plates (103) are bolted with a platform bottom plate (2) laid along the length direction of the support crossbeam (1). A platform guardrail (102) is arranged above the two support crossbeams (1) on the three outer sides of the platform bottom plate (2). One end of the support crossbeam (1) is fixedly connected with a vertical beam (3) with a ladder (4) on one side extending upward. The upper end of the vertical beam (3) is fixedly connected with a cantilever beam (5). A limiting component (7) is fixedly connected to the side of the cantilever beam (5) close to the vertical beam (3). The limiting component (7) includes a limiting plate (701) fixedly connected with the cantilever beam (5) and parallel to the vertical beam (3). A rolling wheel (8) is rotatably connected between the upper end of the limiting plate (701) and the vertical beam (3). A limiting stud (702) with a handle (703) at one end is threadedly connected to the lower end of the limiting plate (701). One end of the limiting stud (702) facing the vertical beam (3) is fixedly connected with a pressing plate (704) to facilitate the tight fixation of the working platform to the steel beam.

2. The external self-balancing movable cantilever working platform according to claim 1, wherein: Lower ladder guardrails (401) are arranged on the outer sides of the lower parts of the two ladders (4).

3. The external self-balancing movable cantilever working platform according to claim 1, wherein: A number of annularly distributed blind holes (801) are arranged in the direction of the rolling wheel (8) facing the limiting plate (701). The limiting plate (701) is provided with a limiting through hole (705) with the same axis as the blind holes (801). The limiting through hole (705) is connected with a pin (706).

4. The externally-mounted self-balancing movable cantilever working platform according to claim 1, characterized in that: A balance frame (9) is fixedly connected to the end of the cantilever beam (5) far from the vertical beam (3).

5. The external self-balancing movable cantilever working platform according to claim 1, characterized in that: A reinforcing plate (6) fixedly connected with the vertical beam (3) is fixedly connected to the upper part of the side of the cantilever beam (5) close to the vertical beam (3).

6. The external self-balancing movable cantilever working platform according to claim 1, characterized in that: The pressing plate (704) has a wear-resistant side surface.

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