Mounting device and mounting method for cantilever bottom sealing plate of steel box girder

Abstract

The invention discloses a steel box girder cantilever arm bottom sealing plate mounting device and method. The steel box girder cantilever arm bottom sealing plate mounting device comprises a winch, a winch horizontal rail, a bottom sealing plate adjustable bracket and a bracket horizontal sliding rail. The lifting arm bottom sealing plate is lifted through a winch and moved to the position above the adjustable bracket along the winch horizontal rail, the lifting arm bottom sealing plate is placed on the adjustable bracket, the adjustable bracket moves to the position below the steel box girder lifting arm flange plate along the bracket sliding rail, the vertical height and the pitching angle of the bottom sealing plate are adjusted to the target position, and the lifting arm bottom sealing plate is installed. The overall transfer and installation of the cantilever arm bottom sealing plate are achieved, the cost is saved, the working procedures are simplified, the installation efficiency is remarkably improved, stable supporting of the bottom sealing plate in the installation process is ensured, the installation precision is accurately controlled, the overall installation quality is improved, and the safety and reliability in the construction process are ensured.

Description

Technical Field

[0001] The invention belongs to the field of steel box girder installation, and in particular relates to a steel box girder cantilever bottom sealing plate installation device and an installation method. Background Art

[0002] When the steel box girder is operated in sections, the cantilever of the steel box girder must be separated from the main box body due to the structural characteristics of the steel box girder, the limitations of the processing site and the constraints of the transportation route. For those cantilever arms equipped with bottom sealing plates under the cantilever arms, patching operations must be carried out at the construction site. This operation can only be carried out after the welding and painting processes inside the cantilever arms are completed.

[0003] During the on-site installation of the cantilever bottom cover plate, due to the high altitude working environment, it is usually necessary to manually lift the cover plate to the designated position and fix it by spot welding. When the patching material is heavy, it is difficult for workers to lift it. In this case, the patching material must be cut into small pieces before installation. This block installation method not only increases the workload, but also reduces the installation efficiency and may affect the appearance quality of the installation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a steel box girder cantilever bottom cover plate installation device and installation method, which solves the problem of low efficiency and poor appearance of cantilever bottom cover plate block installation in the prior art.

[0005] The present invention adopts the following technical solutions to solve the above technical problems: A device for installing a bottom sealing plate of a steel box girder cantilever arm, comprising a winch, a winch horizontal track, an adjustable bracket for the bottom sealing plate, and a bracket horizontal slide rail; wherein the winch horizontal track is fixed above the top plate of the steel box girder, extends outward from one end below the outer side to hang the bracket horizontal slide rail, the cantilever arm bottom sealing plate is lifted by the winch, moved along the winch horizontal track to above the adjustable bracket, the cantilever arm bottom sealing plate is placed on the adjustable bracket, the adjustable bracket is moved along the bracket slide rail to a position below the cantilever arm flange plate of the steel box girder, and the up and down height and pitch angle of the bottom sealing plate are adjusted to the target position, and the cantilever arm bottom sealing plate is installed.

[0006] The adjustable bracket of the bottom sealing plate includes a bracket, an up and down adjustment device, and a pitch adjustment device, wherein the up and down adjustment device includes two sections that can move up and down relative to each other, the lower section is a fixed section, which is movably connected to the horizontal slide rail of the bracket, and the upper section is a movable section, the upper end of which is rotatably connected to the bracket, and the lower end is movably connected to the fixed section, and moves up and down relative to the fixed section; one end of the pitch adjustment device is movably connected to the bracket, and the other end is movably connected to the up and down adjustment device, and is used to adjust the pitch angle of the bracket.

[0007] The pitch adjustment device is a rod with a fixed length, one end of which is movably connected to the supporting plate, and the other end of which is movably connected to the fixed section of the up-and-down adjustment device.

[0008] The pitch adjustment device is a telescopic adjustment rod.

[0009] The bracket horizontal slide rail is fixedly connected to the end of the winch horizontal track through a supporting vertical rod.

[0010] The horizontal track of the winch is fixed by two supporting uprights, one is fixed on the top plate of the steel box beam, and the other is fixed on the cantilever arm.

[0011] The adjustable bracket is provided with an automatic control device, which automatically adjusts according to the installation height and angle of the bottom sealing plate of the cantilever arm.

[0012] The method for installing the bottom cover plate of the cantilever arm of a steel box beam comprises the following steps: Step 1: Install the bottom cover plate installation device of the steel box beam cantilever arm at a corresponding position and fix it; Step 2: The winch uses a wire rope to lift the bottom cover of the boom and moves along the horizontal track of the winch to the top of the adjustable bracket; Step 3: Control the winch to lower the wire rope, place the bottom cover plate of the boom on the adjustable bracket, and fix it; Step 4, control the adjustable bracket to move along the bracket horizontal slide rail to below the bottom sealing plate installation position; Step 5: Use the adjustable bracket to adjust the height and inclination angle of the cantilever bottom cover plate until the cantilever bottom cover plate is adjusted to the specified position and then spot welded to the cantilever flange plate of the steel box girder to complete the installation of the cantilever bottom cover plate.

[0013] The specific process of the adjustable bracket adjusting the height of the bottom cover plate of the cantilever arm and the tilt angle is as follows: After the adjustable bracket moves to the target position on the horizontal slide rail, first, preliminarily adjust the pitch angle of the cantilever bottom cover plate, then adjust the height of the cantilever bottom cover plate to below the cantilever flange plate of the steel box girder, and then adjust the pitch angle and height in sequence until the cantilever bottom cover plate fits against the lower surface of the cantilever flange plate of the steel box girder.

[0014] The hoist is an electric hoist, which hoists the bottom sealing plate of the boom by means of a steel wire rope, moves the hoist to above the adjustable bracket, lowers the steel wire rope, and places the bottom sealing plate of the boom on the adjustable bracket.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By optimizing the support system structure and selecting different types of brackets, it can adapt to the installation requirements of various bottom sealing plates; the use of adjustable bracket devices ensures the stable support of the bottom sealing plate during the installation process, so that the installation accuracy can be precisely controlled, thereby improving the overall installation quality and ensuring the safety and reliability of the construction process.

[0016] 2. This construction method designs a corresponding support system for the on-site installation of the cantilever bottom cover of the steel box girder, and uses electric lifting equipment to achieve precise positioning and installation of the bottom cover.

[0017] 3. The application of electric lifting equipment effectively solves the problem of manual handling. For bottom sealing plates with larger size and heavier weight, they can be transported and installed without cutting, thus saving costs, simplifying the process, and significantly improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the bottom sealing plate hoisted by an electric winch during the installation of the bottom sealing plate of the cantilever arm of the steel box girder of the present invention.

[0019] Figure 2 It is a schematic diagram of the electric winch moving along the track to the top of the bracket when the bottom cover plate of the cantilever arm of the steel box girder of the present invention is installed.

[0020] Figure 3 It is a schematic diagram of placing the bottom cover plate of the cantilever arm of the steel box girder on the bracket when the electric winch lowers the steel wire rope during the installation of the cantilever arm bottom cover plate of the steel box girder of the present invention.

[0021] Figure 4 This is a schematic diagram of the cantilever bottom cover plate of the steel box girder of the present invention being located below the installation position when the cantilever bottom cover plate is installed.

[0022] Figure 5 It is a schematic diagram of adjusting the adjustable bracket when installing the bottom cover plate of the cantilever arm of the steel box girder of the present invention.

[0023] Among them, the markings in the figure are: 1—support vertical pole; 2—winch horizontal track; 3—bracket horizontal slide rail supporting vertical pole; 4—bracket horizontal slide rail; 5—bracket up and down adjustment device; 6—bracket pitch adjustment device; 7—adjustable bracket; 8—winch; 9—steel box girder top plate; 10—steel box girder cantilever arm flange plate; 11—cantilever arm bottom sealing plate; 12—wire rope. DETAILED DESCRIPTION

[0024] The structure and working process of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] The design purpose of the present invention is to propose a device and construction method for quickly installing the bottom sealing plate of the cantilever arm. By selecting appropriate construction technology and construction auxiliary devices, the overall installation of the bottom sealing plate of the cantilever arm is realized. This device and method are easy to operate and highly practical, which significantly improves the installation efficiency of the bottom sealing plate, reduces the labor intensity of the operators, and ensures the safety and reliability of the construction process.

[0026] A device for installing a bottom sealing plate of a steel box girder cantilever arm, comprising a winch, a winch horizontal track, an adjustable bracket for the bottom sealing plate, and a bracket horizontal slide rail; wherein the winch horizontal track is fixed above the top plate of the steel box girder, extends outward from one end below the outer side to hang the bracket horizontal slide rail, the cantilever arm bottom sealing plate is lifted by the winch, moved along the winch horizontal track to above the adjustable bracket, the cantilever arm bottom sealing plate is placed on the adjustable bracket, the adjustable bracket is moved along the bracket slide rail to a position below the cantilever arm flange plate of the steel box girder, and the up and down height and pitch angle of the bottom sealing plate are adjusted to the target position, and the cantilever arm bottom sealing plate is installed.

[0027] Specific embodiments, such as Figures 1 to 5 As shown, A device for installing a bottom cover plate of a steel box girder cantilever arm, comprising a winch 8, a winch horizontal track 2, an adjustable bottom cover plate bracket 7, and a bracket horizontal slide rail 4; wherein the winch horizontal track 2 is fixed above a steel box girder top plate 9, extends outward from one end below to hang the bracket horizontal slide rail 4, the cantilever arm bottom cover plate 11 is hoisted by the winch 8, moved along the winch horizontal track 2 to above the adjustable bracket 7, the cantilever arm bottom cover plate 11 is placed on the adjustable bracket 7, the adjustable bracket 7 is moved along the bracket horizontal slide rail 4 to a position below the cantilever arm flange plate 10 of the steel box girder, and the up and down height and pitch angle of the cantilever arm bottom cover plate 11 are adjusted to the target position, and the cantilever arm bottom cover plate 11 is installed.

[0028] The bottom sealing plate adjustable bracket 7 includes a bracket, an up-and-down adjustment device 5, and a pitch adjustment device 6, wherein the up-and-down adjustment device 5 includes two sections that can move up and down relative to each other, the lower section is a fixed section, which is movably connected to the bracket horizontal slide rail 4, and the upper section is a movable section, the upper end of which is rotatably connected to the bracket, and the lower end is movably connected to the fixed section, and moves up and down relative to the fixed section; one end of the pitch adjustment device 6 is movably connected to the bracket, and the other end is movably connected to the up-and-down adjustment device 5, and is used to adjust the pitch angle of the bracket.

[0029] The pitch adjustment device 6 is a rod with a fixed length, one end of which is movably connected to the supporting plate, and the other end of which is movably connected to the fixed section of the up-and-down adjustment device 5 .

[0030] The pitch adjustment device 6 is a retractable adjustment rod.

[0031] The bracket horizontal slide rail 4 is fixedly connected to the end of the winch horizontal track 2 through the support vertical rod 3.

[0032] The horizontal track of the winch is fixed by two supporting uprights 1, one is fixed on the top plate 9 of the steel box beam, and the other is fixed on the cantilever arm.

[0033] The adjustable bracket 7 is provided with an automatic control device, which is automatically adjusted according to the installation height and angle of the bottom cover plate 11 of the cantilever arm. The adjustable bracket is provided with a position detection sensor and an angle detection sensor, which is automatically adjusted to the target position according to the information of the position detection sensor and the angle detection sensor.

[0034] The method for installing the bottom cover plate of the cantilever arm of a steel box beam comprises the following steps: Step 1: Install the bottom cover plate installation device of the steel box beam cantilever arm at a corresponding position and fix it; Step 2: The winch uses a wire rope to lift the bottom cover of the boom and moves along the horizontal track of the winch to the top of the adjustable bracket; Step 3: Control the winch to lower the wire rope, place the bottom cover plate of the boom on the adjustable bracket, and fix it; Step 4, control the adjustable bracket to move along the bracket horizontal slide rail to below the bottom sealing plate installation position; Step 5: Use the adjustable bracket to adjust the height and inclination angle of the cantilever bottom cover plate until the cantilever bottom cover plate is adjusted to the specified position and then spot welded to the cantilever flange plate of the steel box girder to complete the installation of the cantilever bottom cover plate.

[0035] Example The construction method using the above-mentioned steel box beam cantilever bottom cover plate installation device comprises the following steps: The first step is to set the bottom sealing plate installation device of the steel box beam cantilever arm on the top plate of the steel box beam and fix it, and use the electric winch to use the wire rope to lift the bottom sealing plate of the cantilever arm; Step 2: Control the electric winch to move along the horizontal track of the electric winch to the top of the adjustable bracket; Step 3: Control the electric winch to lower the wire rope, place the bottom cover plate of the boom on the adjustable bracket, and fix it; Step 4: The adjustable bracket moves along the bracket horizontal slide rail to below the bottom sealing plate installation position; Step 5. Use the bracket up and down adjustment device to adjust the height of the cantilever bottom cover plate, and the bracket pitch adjustment device to adjust the angle of the cantilever bottom cover plate. After the cantilever bottom cover plate is adjusted to the specified position, it is spot welded to the cantilever flange plate of the steel box girder to complete the installation of the cantilever bottom cover plate.

[0036] The specific process of the adjustable bracket adjusting the height of the bottom cover plate of the cantilever arm and the tilt angle is as follows: After the adjustable bracket moves to the target position on the horizontal slide rail, first, preliminarily adjust the pitch angle of the cantilever bottom cover plate, then adjust the height of the cantilever bottom cover plate to below the cantilever flange plate of the steel box girder, and then adjust the pitch angle and height in sequence until the cantilever bottom cover plate fits against the lower surface of the cantilever flange plate of the steel box girder.

[0037] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatuses.

[0038] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0039] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0040] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] This solution is not limited to the above-mentioned specific implementation methods, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solution of this solution without departing from the scope of the technical solution of this solution, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essential content of this solution. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of this solution without departing from the content of the technical solution of this solution still falls within the scope of protection of the technical solution of this solution.

Claims

1. A steel box beam cantilever bottom cover plate installation device, characterized in that: It includes a winch, a winch horizontal track, an adjustable bracket for a bottom sealing plate, and a bracket horizontal slide rail; wherein the winch horizontal track is fixed above the top plate of the steel box girder, extends out from the outer end to hang the bracket horizontal slide rail below, the cantilever arm bottom sealing plate is lifted by the winch, moved along the winch horizontal track to above the adjustable bracket, the cantilever arm bottom sealing plate is placed on the adjustable bracket, the adjustable bracket is moved along the bracket slide rail to the position below the cantilever arm flange plate of the steel box girder, and the up and down height and pitch angle of the bottom sealing plate are adjusted to the target position, and the cantilever arm bottom sealing plate is installed.

2. The steel box girder cantilever bottom cover plate installation device according to claim 1 is characterized in that: The adjustable bracket of the bottom sealing plate includes a bracket, an up and down adjustment device, and a pitch adjustment device, wherein the up and down adjustment device includes two sections that can move up and down relative to each other, the lower section is a fixed section, which is movably connected to the horizontal slide rail of the bracket, and the upper section is a movable section, the upper end of which is rotatably connected to the bracket, and the lower end is movably connected to the fixed section, and moves up and down relative to the fixed section; one end of the pitch adjustment device is movably connected to the bracket, and the other end is movably connected to the up and down adjustment device, and is used to adjust the pitch angle of the bracket.

3. The steel box girder cantilever bottom cover plate installation device according to claim 2 is characterized in that: The pitch adjustment device is a rod with a fixed length, one end of which is movably connected to the supporting plate, and the other end of which is movably connected to the fixed section of the up-and-down adjustment device.

4. The steel box girder cantilever bottom cover plate installation device according to claim 2, characterized in that: The pitch adjustment device is a telescopic adjustment rod.

5. The steel box girder cantilever bottom cover plate installation device according to claim 1, characterized in that: The bracket horizontal slide rail is fixedly connected to the end of the winch horizontal track through a supporting vertical rod.

6. The steel box girder cantilever bottom cover plate installation device according to claim 1, characterized in that: The horizontal track of the winch is fixed by two supporting uprights, one is fixed on the top plate of the steel box beam, and the other is fixed on the cantilever arm.

7. The steel box girder cantilever bottom cover plate installation device according to claim 1 is characterized in that: The adjustable bracket is provided with an automatic control device, which automatically adjusts according to the installation height and angle of the bottom sealing plate of the cantilever arm.

8. The installation method of the bottom cover plate of the steel box beam cantilever arm is characterized by: The steps include: Step 1, installing the steel box girder cantilever bottom cover plate installation device described in any one of claims 1 to 7 at a corresponding position and fixing it; Step 2: The winch uses a wire rope to lift the bottom cover of the boom and moves along the horizontal track of the winch to the top of the adjustable bracket; Step 3: Control the winch to lower the wire rope, place the bottom cover plate of the boom on the adjustable bracket, and fix it; Step 4, control the adjustable bracket to move along the bracket horizontal slide rail to below the bottom sealing plate installation position; Step 5: Use the adjustable bracket to adjust the height and inclination angle of the cantilever bottom cover plate until the cantilever bottom cover plate is adjusted to the specified position and then spot welded to the cantilever flange plate of the steel box girder to complete the installation of the cantilever bottom cover plate.

9. The method for installing the bottom cover plate of the cantilever arm of a steel box beam according to claim 8, characterized in that: The specific process of the adjustable bracket adjusting the height of the bottom cover plate of the cantilever arm and the tilt angle is as follows: After the adjustable bracket moves to the target position on the horizontal slide rail, first, preliminarily adjust the pitch angle of the cantilever bottom cover plate, then adjust the height of the cantilever bottom cover plate to below the cantilever flange plate of the steel box girder, and then adjust the pitch angle and height in sequence until the cantilever bottom cover plate fits against the lower surface of the cantilever flange plate of the steel box girder.

10. The method for installing the bottom cover plate of the cantilever arm of a steel box beam according to claim 8, characterized in that: The hoist is an electric hoist, which hoists the bottom sealing plate of the boom by means of a steel wire rope, moves the hoist to above the adjustable bracket, lowers the steel wire rope, and places the bottom sealing plate of the boom on the adjustable bracket.

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