A manned levelling device for the top of a precast box girder

Abstract

The utility model discloses a kind of manned leveling devices of prefabricated box girder top, belong to prefabricated box girder processing and production auxiliary equipment technical field;It includes the outer mould support of being arranged in the both sides of prefabricated box girder;Guide rail is set on the upper top of two outer mould supports;Guide rail is arranged along the length direction of outer mould frame;Movablely installed with movable support on guide rail;Beam is installed between two movable supports;Several groups of suspender are installed on beam;Workbench plate is installed in the lower bottom of suspender;Workbench plate is suspended in the upper of prefabricated box girder;The utility model effectively solves the problem that the efficiency of traditional manual direct leveling mode is low, labor intensity is big, and labor cost is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for the processing and production of precast box girders, specifically to a manned leveling device for the top of a precast box girder. Background Technology

[0002] During the production of precast box girders, to ensure the flatness of the bridge deck, the top concrete of the box girder after screeding requires further leveling and polishing. Currently, the industry commonly uses manual leveling, requiring operators to inspect both sides of the box girder. If the concrete surface needs leveling and polishing, they must enter the pouring area to work. This results in workers directly stepping on the not-fully-cured concrete surface, easily causing indentations, which must then be leveled upon return. Furthermore, traditional methods rely on manual labor to repeatedly move between the outer molds on both sides, which is inefficient and labor-intensive. Therefore, the industry urgently needs a specialized manned device that can achieve full coverage of the work surface without damaging the concrete surface. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a manned leveling device for the top of precast box girders, so as to solve the problems of low efficiency, high labor intensity and high labor cost of traditional manual leveling methods.

[0004] To solve the above problems, this utility model provides the following technical solution:

[0005] A manned leveling device for the top of a precast box girder; it includes outer formwork supports arranged on both sides of the precast box girder; guide rails are provided on the top of the two outer formwork supports; the guide rails are arranged along the length of the outer formwork supports; movable supports are movably installed on the guide rails; a crossbeam is installed between the two movable supports; several sets of hanging rods are installed on the crossbeam; a work platform is installed at the bottom of the hanging rods; the work platform is suspended above the precast box girder.

[0006] The movable support includes a base plate; rollers that cooperate with the crossbeams are provided at the bottom of the base plate; vertically arranged facade frames are installed on the top surface of the base plate; and guide rails are provided at the top of the facade frames.

[0007] The facade frame is a trapezoidal support structure that is smaller at the top and larger at the bottom; the facade frame is installed in the middle of the base plate; a motor for driving the rollers to rotate is installed on the top surface of the base plate corresponding to the lower part of the facade frame.

[0008] The crossbeam is a horizontally arranged steel truss structure; a lifting lug is provided at the middle of the top surface of the crossbeam; the lifting rod is set on the crossbeam at the position corresponding to the vertical steel pipe.

[0009] The workbench is a rectangular plate structure; a counterweight is set in the middle of the bottom surface of the workbench; the total height of the counterweight and the lifting rod is less than the height of the movable support.

[0010] Several extension plates are set on the front and rear ends of the workbench corresponding to the length of the precast box girder; through holes for placing mud buckets are opened on the extension plates.

[0011] A plastic hook for holding cleaning and leveling tools is installed at the lower middle part of the boom.

[0012] Preferred,

[0013] The beneficial effects of this utility model are reflected in the following aspects:

[0014] 1. The work platform slides back and forth along the longitudinal direction of the box girder through the guide rail and movable support. With the help of the suspension rod, the work platform is always suspended above the concrete surface. The operator can complete the leveling and cleaning operation of the middle part of the top surface of the box girder from the aerial work platform, completely eliminating the indentation caused by stepping on the concrete surface in traditional operations.

[0015] 2. It adopts motor drive, and the movable support has a self-propelled function, which, together with the steel truss beam, forms a rigid support system; its structure is stable and can withstand two people operating on the workbench at the same time.

[0016] 3. An extension plate is installed on the side of the workbench to increase the operator's activity area in squatting or kneeling positions, while the tool hooks and mud bucket positioning holes are designed to serve as a tool storage structure; significantly reducing operator fatigue; the counterweight can further lower the center of gravity, thereby improving structural stability;

[0017] 4. Compared with traditional processes, it can reduce the number of construction workers by 2 to 4 and significantly shorten the construction time, avoid material waste caused by surface repair, reduce construction costs, and has significant promotional value in the industry. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention in an embodiment;

[0019] Figure 2 This is a three-dimensional installation diagram of the movable support and the equipment mounted on it in this embodiment;

[0020] Figure 3 This is the embodiment. Figure 2 A top-down view of the worktable of the central device;

[0021] Explanation of reference numerals in the attached drawings: 1. Outer mold support, 2. Guide rail, 3. Movable support, 4. Crossbeam, 5. Hanging rod, 6. Workbench, 7. Lifting lug, 8. Counterweight, 9. Extension plate, 31. Base plate, 32. Roller, 33. Facade frame, 34. Motor, 91. Through hole. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Example

[0023] Reference Figure 1 This embodiment provides a manned leveling device for the top of a precast box girder, which includes an outer formwork support 1 set on both sides of the precast box girder; a guide rail 2 set on the top of the two outer formwork supports 1; the guide rail 2 is arranged along the length direction of the outer formwork support 1; a movable support 3 is movably installed on the guide rail 2; a crossbeam 4 is installed between the two movable supports 3; a plurality of sets of hanging rods 5 are installed on the crossbeam 4; a work platform 6 is installed at the bottom of the hanging rods 5; the work platform 6 is suspended above the precast box girder.

[0024] The movable support 3 includes a base plate 31; rollers 32 that cooperate with the crossbeam 4 are provided at the bottom of the base plate 31; vertically arranged frame 33 is installed on the top surface of the base plate 31; and guide rail 2 is provided on the top of the frame 33.

[0025] The facade frame 33 is a trapezoidal support structure that is smaller at the top and larger at the bottom. The facade frame 33 is installed in the middle of the base plate 31. A motor 34 is provided on the top surface of the base plate 31 corresponding to the lower part of the facade frame 33 to drive the rollers 32 to rotate. In this embodiment, the facade frame can be stretched vertically to adapt to different working environment requirements.

[0026] The crossbeam 4 is a horizontally arranged steel truss structure; a lifting lug 7 is provided at the middle of the top surface of the crossbeam 4; the lifting rod 5 is provided on the crossbeam 4 at the position corresponding to the vertical steel pipe.

[0027] The workbench 6 is a rectangular plate structure; a counterweight 8 is set at the center of the bottom surface of the workbench 6; the total height of the counterweight 8 and the hanging rod 5 is less than the height of the movable support 3. In this embodiment, the workbench is provided with anti-slip textured surfaces; LED lighting strips are installed on the edge of the workbench to meet the needs of nighttime construction.

[0028] Several extension plates 9 are respectively provided on the front and rear ends of the precast box girder along its length on the workbench 6; through holes 91 for placing mud buckets are opened on the extension plates 9. The extension plates are positioned between two hanger rods. In this embodiment, the through holes are located on the extension plates 9 at the position corresponding to the right side of the operator.

[0029] A plastic hook for holding a cleaning and leveling tool is installed at the lower middle part of the boom 5. The plastic hook in this embodiment is not shown in the illustration.

[0030] When using the utility model device in this embodiment, the movable support needs to be moved to the front or rear side of the box girder. Two operators climb the ladder onto the workbench and stand on either side of the workbench. The corresponding equipment is placed at the plastic hook and through hole, respectively. Then, the motor is started to move the device slowly across the work area and check for any areas that need to be cleaned and leveled. If cleaning and leveling are required, the operators can work on the concrete below in a squatting or sitting position.

Claims

1. A manned leveling device for the top of a precast box girder, characterized in that: It includes external formwork supports (1) set on both sides of the precast box girder; guide rails (2) are set on the top of the two external formwork supports (1); the guide rails (2) are arranged along the length of the external formwork supports (1); movable supports (3) are movably installed on the guide rails (2); a crossbeam (4) is installed between the two movable supports (3); several sets of hangers (5) are installed on the crossbeam (4); a worktable (6) is installed at the bottom of the hangers (5); the worktable (6) is suspended above the precast box girder.

2. The manned leveling device for the top of a precast box girder according to claim 1, characterized in that: The movable support (3) includes a base plate (31); a roller (32) that cooperates with the crossbeam (4) is provided at the bottom of the base plate (31); a vertically arranged facade frame (33) is installed on the top surface of the base plate (31); and a guide rail (2) is provided at the top of the facade frame (33).

3. A manned leveling device for the top of a precast box girder according to claim 2, characterized in that: The facade frame (33) is a trapezoidal support structure with a smaller top and a larger bottom; the facade frame (33) is installed in the middle of the base plate (31); a motor (34) for driving the roller (32) to rotate is provided at the position corresponding to the lower part of the facade frame (33) on the top surface of the base plate (31).

4. A manned leveling device for the top of a precast box girder according to claim 1, characterized in that: The crossbeam (4) is a horizontally arranged steel truss structure; a lifting lug (7) is provided at the middle of the top surface of the crossbeam (4); the lifting rod (5) is set on the crossbeam (4) at the position corresponding to the vertical steel pipe.

5. A manned leveling device for the top of a precast box girder according to claim 1, characterized in that: The workbench (6) is a rectangular plate structure; a counterweight (8) is set in the middle of the bottom surface of the workbench (6); the total height of the counterweight (8) and the hanging rod (5) is less than the height of the movable support (3).

6. A manned leveling device for the top of a precast box girder according to claim 1, characterized in that: Several extension plates (9) are respectively set on the front and rear ends of the precast box girder along the length direction on the workbench (6); through holes (91) for placing mud buckets are opened on the extension plates (9).

7. A manned leveling device for the top of a precast box girder according to claim 1, characterized in that: A plastic hook for placing cleaning and leveling tools is installed at the lower middle part of the boom (5).

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