Assembling and disassembling auxiliary tool for prefabricated box girder hoisting hole base plate

Abstract

The utility model provides a prefabricated box girder hoisting hole base plate loading and unloading auxiliary tool, belongs to the technical field of building production auxiliary tools, and aims to solve the problems that when a box girder is hoisted, a steel base plate needs to be supported and hoisted by a worker in the traditional method for loading and unloading the hoisting steel base plate, labor is wasted, and safety risks exist. Two rotating seats are arranged at the top end of the support, a rotating shaft is arranged between the two rotating seats in a penetrating mode, a rotating sleeve is arranged on the middle section of the swing arm, the rotating shaft is sleeved with the rotating sleeve, and a positioning frame is arranged at one end of the swing arm.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction production auxiliary tools, and more specifically, relates to an auxiliary tool for assembling and disassembling a backing plate for hoisting holes of a prefabricated box beam. Background Art

[0002] Box girders, as an important form of bridge structure, play a vital role in modern bridge engineering. Prefabricated box girders are manufactured in independent prefabrication yards and then hoisted and transported by bridge cranes. When installing the beam, a steel pad is placed at the lifting hole at the lower edge of the top plate. The pad thickness is not less than 40mm. The hoisting boom passes through the hoisting hole at the top of the box beam and is connected to the steel pad. The steel pad and the boom are connected by bolts. During hoisting, the steel pad is in close contact with the top plate of the beam, which increases the load-bearing area of the beam's bearing surface and prevents damage to the beam during hoisting. It can also ensure the verticality of the boom and ensure that the boom and the bearing surface are subjected to force vertically. The traditional method of loading and unloading the hoisting steel pad requires workers to support the hoisting steel pad and fit it with the bottom surface of the box beam top plate. When loading and unloading the hoisting steel pad using this method, workers need to stand at the chamfer of the box beam, which is inconvenient to stand in and poses a safety risk.

[0003] Therefore, in view of this, the existing structure and defects are studied and improved, and a prefabricated box girder lifting hole pad loading and unloading auxiliary tooling is provided, in order to achieve a more practical purpose. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an auxiliary tool for loading and unloading the hoisting hole pads of prefabricated box beams, so as to solve the problem that the traditional method of loading and unloading the hoisting steel pads requires workers to support the hoisting steel pads, which is laborious and has safety risks.

[0005] The purpose and effect of the auxiliary tooling for loading and unloading the hoisting hole pad of the prefabricated box beam of the utility model are achieved by the following specific technical means:

[0006] A prefabricated box girder lifting hole pad loading and unloading auxiliary tooling includes a bracket and a swing arm. The bracket is frame-shaped, and two swivel seats are provided at the top of the bracket. A rotating shaft is passed through the two swivel seats. A rotating sleeve is provided in the middle section of the swing arm, and the rotating sleeve is mounted on the rotating shaft. A positioning frame is provided at one end of the swing arm.

[0007] Furthermore, the positioning frame includes a bottom frame and side guardrails, the bottom frame and the side guardrails form a rectangular frame, and a positioning nut is provided at the center position of the bottom frame.

[0008] Furthermore, two inner strips and two limiting plates are provided in the bottom frame. The inner strips are located on both outer sides of the limiting plates and are perpendicular to the limiting plates. The two limiting plates are centrally symmetrical, and a positioning nut is provided between the two limiting plates.

[0009] Furthermore, a U-shaped plate with an inner opening is provided on the top of the side guardrail, and a reinforcing rib is connected between the U-shaped plate and the swing arm.

[0010] Furthermore, a plurality of universal wheels are provided at the bottom of the bracket.

[0011] Furthermore, supporting arms are connected to both sides of the rear of the bracket, and the bottoms of the two supporting arms are connected by a supporting plate, and the supporting plate is in contact with the ground.

[0012] Furthermore, the swing arms are in the shape of two rods, one end of the two rods is respectively connected to the two sides of the bottom of the positioning frame, and the other end is connected to form a handle.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] It is placed on the inner cavity of the box beam through the support of the bracket, and the steel pad is placed in the positioning frame. By manually swinging the other end of the swing arm and pressing the swing arm downward, the positioning frame drives the steel pad to rise, which just makes the steel pad fit with the lower edge of the box beam top plate. The lever arm is extended by the swing arm, which is easy to operate, reduces manpower input, reduces labor consumption of construction workers, and is more labor-saving. At the same time, the construction workers change the operating direction, which is safer in the middle of the box beam and has precise positioning, thereby improving work efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a three-dimensional diagram of an auxiliary tool for loading and unloading a hoisting hole pad of a prefabricated box beam.

[0016] Figure 2 The utility model is a side view of an auxiliary tool for loading and unloading a hoisting hole pad of a prefabricated box beam.

[0017] Figure 3 It is a structural diagram of the positioning frame in the utility model.

[0018] Figure 4 It is a schematic diagram of the state of the utility model when in use.

[0019] In the figure, the corresponding relationship between component names and drawing numbers is as follows:

[0020] 1. Bracket; 2. Swivel seat; 3. Swivel sleeve; 4. Swing arm; 5. Positioning frame; 6. Handle; 7. Reinforcement rib; 8. Universal wheel; 9. Support arm; 10. Support plate; 501. Bottom frame; 502. Inner strip; 503. Limit plate; 504. Positioning nut; 505. Side guardrail; 506. U-shaped plate. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Example:

[0025] As attached Figure 1 To the attached Figure 4 As shown:

[0026] The utility model provides a prefabricated box beam hoisting hole pad loading and unloading auxiliary tooling, comprising a bracket 1 and a swing arm 4, wherein the bracket 1 is frame-shaped and is used to be placed on the hollow inner cavity of the box beam, such as Figure 4 As shown, two swivel seats 2 are provided at the top of the bracket 1, and a rotating shaft is passed through the two swivel seats 2. A swivel sleeve 3 is provided in the middle section of the swing arm 4, and the swivel sleeve 3 is mounted on the rotating shaft. A positioning frame 5 is provided at one end of the swing arm 4, and the steel pad is placed at the bottom inner of the box beam top plate. By manually swinging the other end of the swing arm 4 and pressing the swing arm 4 downward, the positioning frame 5 is tilted upward and supports the steel pad, which just makes the steel pad fit together with the lower edge of the box beam top plate. The lever arm is extended by the swing arm 4, which is easy to operate and reduces manpower input.

[0027] In this embodiment, the swing arm 4 is in the shape of two rods, one end of the two rods is respectively connected to the two sides of the bottom of the positioning frame 5, and the other end is connected to form a handle 6, so that construction workers can more easily operate and press down the swing arm 4. At the same time, the swing arm 4 has a higher structural strength while reducing the material consumption.

[0028] like Figure 1 and Figure 3As shown, the positioning frame 5 includes a bottom frame 501 and a side guardrail 505. The bottom frame 501 and the side guardrail 505 form a rectangular frame. A positioning nut 504 is provided at the center position of the bottom frame 501. The positioning nut 504 can be pre-connected with the hanger passing through the lifting hole, so that when the hanger is pressed upward against the supporting steel plate, the hanger is in a vertical state, which brings convenience to the connection between the hanger and the steel plate. Two inner strips 502 and two limit plates 503 are provided in the bottom frame 501. The inner strips 502 are located on both sides of the limit plates 503 and are perpendicular to each other. The two limit plates 503 are symmetrical in center, and a positioning nut 504 is provided between the two limit plates 503, so that the positioning nut 504 is inside the tic-tac-toe structure. The position of the positioning nut 504 is more stable and not easy to deform or skew.

[0029] In this embodiment, a U-shaped plate 506 with an inner opening is provided on the top of the side guardrail 505, and a reinforcing rib 7 is connected between the U-shaped plate 506 and the swing arm 4. The setting of the U-shaped plate 506 leaves an opening on one side in the process of supporting the steel pad to facilitate construction workers to connect the hanger and the steel pad, and the reinforcing rib 7 increases the connection strength between the positioning frame 5 and the swing arm 4, making the positioning frame 5 less likely to shake.

[0030] When the construction workers press down one end of the swing arm 4, the bracket 1 is subjected to a tilting force on one side, and support arms 9 are connected to both sides of the rear of the bracket 1. The bottoms of the two support arms 9 are connected by a support plate 10, and the support plate 10 is in contact with the ground, which increases the stability of the bracket 1 and prevents the bracket 1 from tipping over.

[0031] A plurality of universal wheels 8 are provided at the bottom of the bracket 1, so that the bracket 1 can be moved, which is convenient for changing the usage scene.

[0032] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A prefabricated box girder hoisting hole pad loading and unloading auxiliary tooling, characterized by: The invention comprises a bracket (1) and a swing arm (4), wherein the bracket (1) is in a frame shape, two rotating seats (2) are arranged at the top end of the bracket (1), a rotating shaft is passed through the two rotating seats (2), a rotating sleeve (3) is arranged in the middle section of the swing arm (4), the rotating sleeve (3) is sleeved on the rotating shaft, and a positioning frame (5) is arranged at one end of the swing arm (4).

2. The auxiliary tooling for loading and unloading the hoisting hole pad of a prefabricated box beam according to claim 1, characterized in that: The positioning frame (5) comprises a bottom frame (501) and side guardrails (505), the bottom frame (501) and the side guardrails (505) forming a rectangular frame, and a positioning nut (504) is provided at the center position of the bottom frame (501).

3. The auxiliary tooling for loading and unloading the hoisting hole pad of a prefabricated box beam according to claim 2, characterized in that: Two inner strips (502) and two limiting plates (503) are provided in the bottom frame (501); the inner strips (502) are located on both outer sides of the limiting plates (503) and are perpendicular to the limiting plates (503); the two limiting plates (503) are symmetrical about their centers, and a positioning nut (504) is provided between the two limiting plates (503).

4. The auxiliary tooling for loading and unloading the hoisting hole pad of a prefabricated box beam according to claim 2, characterized in that: A U-shaped plate (506) with an inner opening is provided on the top of the side guardrail (505), and a reinforcing rib (7) is connected between the U-shaped plate (506) and the swing arm (4).

5. The auxiliary tooling for loading and unloading the hoisting hole pad of a prefabricated box beam according to claim 1, characterized in that: A plurality of universal wheels (8) are provided at the bottom of the bracket (1).

6. The auxiliary tooling for loading and unloading the hoisting hole pad of a prefabricated box beam according to claim 1, characterized in that: Support arms (9) are connected to both sides of the rear of the bracket (1), and the bottoms of the two support arms (9) are connected by a support plate (10), and the support plate (10) is in contact with the ground.

7. The auxiliary tooling for loading and unloading the hoisting hole pad of a prefabricated box beam according to claim 1, characterized in that: The swing arms (4) are in the shape of two rods, one end of each of which is connected to the two sides of the bottom of the positioning frame (5), and the other end of each of which is connected to form a handle (6).

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