Assembly type bridge deck precast unit hoist

Abstract

This utility model provides a prefabricated bridge deck component lifting tool, belonging to the field of bridge construction tool technology, to solve the problem that prefabricated components of different types have different weights and centers of gravity, and that ordinary lifting components are unstable during the lifting process, easily tilting and causing components to fall off or break. The tool includes a balance frame, which is rectangular in shape and has multiple fixed seats. The multiple fixed seats are connected to the lifting tool by cables. Multiple lifting frames are fitted on both sides of the balance frame. Two lifting rings are installed at the bottom of the lifting frames. The two lifting rings on the same lifting frame are connected to the two ends of the lifting rods passing through the bridge deck prefabricated component by straps.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction tools technology, and more specifically, it relates to a prefabricated bridge deck component lifting tool. Background Technology

[0002] Railway bridges are critical structures on railway lines that span rivers, valleys, roads, or other obstacles. Traditional bridge deck structures often utilize cast-in-place concrete, which presents challenges such as long construction periods, labor-intensive construction, quality constraints due to site conditions (e.g., weather, compaction, formwork installation accuracy), and significant safety hazards associated with working at heights. Meanwhile, the nation has proposed development strategies for infrastructure construction, including "new-type industrialized construction," "intelligent construction," and "green construction," and is vigorously promoting prefabricated technologies. Against this backdrop, the standardized, mechanized, and intelligent prefabrication of the three wall components of the bridge deck in a factory has become an important solution.

[0003] Precast three-wall components in the factory allow for precise dimensional control through high-precision molds, in-factory curing, and standardized construction to ensure strength and excellent appearance quality. This significantly shortens the construction period, reduces on-site pollution and noise, lowers safety risks, saves labor, and facilitates the standardization, scaling up, and industrial upgrading of component production. It is an inevitable technological direction for improving bridge construction standards and meeting the needs of modern transportation construction. Currently, the hoisting and movement of precast components involves adding steel bars inside the hoisting holes and connecting the hoisting mechanism to the component via steel cables. Due to the large variety of precast component types, varying weights, and different centers of gravity, this method of hoisting components is unstable during the hoisting process, easily leading to tilting, component breakage, and other damage.

[0004] In view of this, we will study and improve the existing structure and its shortcomings, and provide a prefabricated bridge deck component lifting tool to achieve a more practical value. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model provides a prefabricated bridge deck component lifting tool, which solves the problem that prefabricated components vary in weight and center of gravity, and that ordinary lifting components are unstable during the lifting process, easily tilting and causing components to fall off or break.

[0006] The purpose and effect of this utility model's prefabricated bridge deck component lifting tool are achieved through the following specific technical means:

[0007] A prefabricated bridge deck component lifting device includes a balancing frame, which is rectangular in shape and has multiple fixed seats. The multiple fixed seats are connected to the lifting device by cables. Multiple lifting frames are fitted on both sides of the balancing frame. Two lifting rings are installed at the bottom of the lifting frame. The two lifting rings on the same lifting frame are connected to the two ends of the lifting rods passing through the bridge deck component by straps.

[0008] Furthermore, the width of the rectangular hole inside the hanging frame matches the width of the balance frame's edge, the height of the rectangular hole is greater than the thickness of the balance frame, and a locking mechanism is provided between the hanging frame and the balance frame.

[0009] Furthermore, the locking mechanism includes rotating seats on both sides of the top of the hanging frame, each rotating seat is fitted with an extension arm, and a torsion spring is fitted on the shaft of the rotating seat. One end of the torsion spring abuts against the hanging frame, and the other end abuts against the extension arm. A stop block is provided at the bottom of the extension arm. When the hanging frame is pulled down, the torsion spring pushes the stop block to abut against the top surface of the balance frame.

[0010] Furthermore, a friction pad is fitted onto the abutment block.

[0011] Furthermore, the two ends of the lifting ring abut against the two sides of the lifting frame and form round heads. A bolt that penetrates the lifting frame is inserted between the two round heads, and the bolt abuts against the two round heads respectively through the bolt head and the nut at the other end.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] By setting up a balancing frame and fixing seats around the rectangular frame, the precast component is kept horizontal when suspended by the rectangular frame. By using a multi-point weight distribution method, the center of gravity of the balancing frame and the precast component are aligned, which keeps the precast component horizontal during transportation. The position of the balancing frame can be changed to accommodate precast components of different sizes for hoisting, and the hoisting is less prone to tilting and more stable. Attached Figure Description

[0014] Figure 1 This is a perspective view of a prefabricated bridge deck lifting device according to this utility model.

[0015] Figure 2 yes Figure 1 A magnified view of region A in the middle.

[0016] Figure 3 This is a structural schematic diagram of the hanging frame in this utility model.

[0017] Figure 4 This is a front view of a prefabricated bridge deck component lifting device according to this utility model.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0019] 1. Balance frame; 2. Lifting frame; 3. Lifting ring; 4. Binding strap; 5. Lifting rod; 6. Bridge deck precast component; 7. Fixing seat; 8. Cable; 9. Round head; 10. Bolt; 201. Rotary seat; 202. Torsion spring; 203. Extending arm; 204. Abutment block; 205. Friction pad; 701. Lifting shaft. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example

[0024] As attached Figure 1 To be continued Figure 4 As shown:

[0025] This utility model provides a prefabricated bridge deck component lifting device, including a balance frame 1. The balance frame 1 is rectangular and has multiple fixed seats 7. The multiple fixed seats 7 are connected to the lifting device (not shown) by cables 8. In this embodiment, four sets of fixed seats 7 are evenly distributed on the top four sides of the balance frame 1 and are connected by cables 8 so that they can remain horizontal after being lifted.

[0026] The top of the fixed base 7 has an opening, through which a hanging shaft 701 is inserted. The end of the cable 8 is fitted onto the hanging shaft 701, and the cable 8 is a steel cable.

[0027] Multiple lifting frames 2 are fitted on both sides of the balance frame 1. Two lifting rings 3 are installed at the bottom of the lifting frame 2. The two lifting rings 3 on the same lifting frame 2 are connected to the two ends of the lifting rods 5 that pass through the bridge deck precast component 6 by the binding straps 4. The lifting frame 2 is a rectangular piece with a central hole. The balance frame 1 is a rectangular frame composed of I-beams. The high structural strength setting can maintain the quality of the handover and reduce the kinetic energy loss during hoisting. The lifting rings 3 on both sides of the balance frame 1 are symmetrically arranged. The lifting frames 2 are matched to the corresponding positions according to the size of the precast component 6. The four-point symmetrical connection makes the center of gravity of the balance frame 1 and the precast component 6 consistent, so that the precast component 6 remains horizontal during transportation, which is convenient for subsequent box girder splicing.

[0028] Among them, the width of the rectangular hole in the hanging frame 2 matches the width of the frame of the balance frame 1, and the height of the rectangular hole is greater than the thickness of the balance frame 1, so that the hanging frame 2 can move on the balance frame 1. In order to improve the structural strength of the balance frame 1, multiple reinforcing ribs are also provided inside the balance frame 1, and the hanging frame 2 can move within the corresponding range to match the position of the hanging rod 5 inserted on the prefabricated component.

[0029] In addition, a locking mechanism is provided between the hanging frame 2 and the balance frame 1 to restrict the position of the hanging frame 2, such as... Figures 2 to 4 As shown, the locking mechanism includes rotating seats 201 arranged on both sides of the top of the hanging frame 2. Each rotating seat 201 is fitted with a boom 203. A torsion spring 202 is also fitted on the shaft of the rotating seat 201. One end of the torsion spring 202 abuts against the hanging frame 2, and the other end abuts against the boom 203. A stop block 204 is provided at the bottom of the boom 203. When the hanging frame 2 is pulled down, the torsion spring 202 pushes the stop block 204 to abut against the top surface of the balance frame 1.

[0030] The weight of the precast component 6 causes the lifting frame 2 to be pulled down. The more the lifting frame 2 is pulled down, the more tightly the extension arm 203 drives the stop block 204 to press against the surface of the balance frame 1. The stop block 204 is fitted with a friction pad 205, so that the lifting frame 2 will not move when the object is lifted. Before the object is hoisted, the lifting frame 2 can be moved up. The torsion spring 202 drives the extension arms 203 on both sides of the lifting frame 2 to retract inward. The stop block 204 then makes line contact with the balance frame 1 at its end, so that the lifting frame 2 remains vertically balanced without restricting the position of the lifting frame 2. The lifting frame 2 can move laterally within the corresponding range. After aligning with the lifting rods 5 inserted on different precast components 6, the lifting rods 5 and the lifting rings 3 are connected by the straps 4. After the lifting is completed, the lifting frame 2 moves down due to gravity. The stop block 204 presses against the balance frame 1 again to restrict the position of the lifting frame 2.

[0031] The position of the hanging frame 2 can be adjusted to accommodate prefabricated components 6 of different sizes.

[0032] like Figure 3As shown, the two ends of the lifting ring 3 abut against the two sides of the lifting frame 2 and form round heads 9. A bolt 10 that passes through the lifting frame 2 is inserted between the two round heads 9. The bolt 10 abuts against the two round heads 9 through the bolt head and the nut at the other end. The removal of the nut and the bolt 10 allows the lifting ring 3 to be replaced. Moreover, the lifting ring 3 uses the round head 9 to contact the plate-shaped lifting frame 2, rather than the line contact of the column, making the connection more stable.

[0033] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A lifting device for prefabricated bridge deck components, characterized in that: The system includes a balance frame (1), which is rectangular in shape. Multiple fixed seats (7) are provided on the balance frame (1). The multiple fixed seats (7) are connected to the hoisting system by cables (8). Multiple hanging frames (2) are fitted on both sides of the balance frame (1). Two hanging rings (3) are installed at the bottom of the hanging frame (2). The two hanging rings (3) on the same hanging frame (2) are connected to the two ends of the hanging rod (5) that passes through the bridge deck precast component (6) by straps (4).

2. The prefabricated bridge deck component lifting device as described in claim 1, characterized in that: The width of the rectangular hole in the hanging frame (2) matches the width of the frame of the balance frame (1), the height of the rectangular hole is greater than the thickness of the balance frame (1), and a locking mechanism is provided between the hanging frame (2) and the balance frame (1).

3. The prefabricated bridge deck component lifting device as described in claim 2, characterized in that: The locking mechanism includes rotating seats (201) provided on both sides of the top of the hanging frame (2). Each rotating seat (201) is fitted with a boom (203). A torsion spring (202) is also fitted on the shaft of the rotating seat (201). One end of the torsion spring (202) abuts against the hanging frame (2) and the other end abuts against the boom (203). A stop block (204) is provided at the bottom of the boom (203). When the hanging frame (2) is pulled down, the torsion spring (202) pushes the stop block (204) to abut against the top surface of the balance frame (1).

4. The prefabricated bridge deck component lifting device as described in claim 3, characterized in that: A friction pad (205) is fitted onto the abutment block (204).

5. The prefabricated bridge deck component lifting device as described in claim 1, characterized in that: The two ends of the lifting ring (3) abut against the two sides of the lifting frame (2) and form round heads (9). A bolt (10) that passes through the lifting frame (2) is inserted between the two round heads (9). The bolt (10) abuts against the two round heads (9) respectively through the bolt head and the nut at the other end.

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