Box girder lifting wing plate protection device
By designing a box beam lifting wing plate protection device, the "work" font structure and rubber pads are used to reduce hard contact, and the rounded corner design reduces the wear of wire ropes, the problems of flange plate damage and wire rope wear during box beam lifting are solved, and the quality of box beams and the safety of beam lifting are improved.
Patent Information
- Application Number
- CN202421378532.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-17
AI Technical Summary
During the box beam lifting process, the contact between the wire rope and the flange plate causes the concrete pressure to increase, which can easily cause the flange plate to collapse and collapse angles, affect the box beam quality, and the wire rope wears and breaks the wire, affecting the safety of the lifting beam.
A box beam lifting wing plate protection device is designed, consisting of the upper wing plate, the lower wing plate and the web. The whole is in a "work" shape. It is cast in one piece with high strength carbon steel. It is installed at the box beam wing plate above the beam lifting port. It uses rubber pads to reduce hard contact and reduces wire rope wear through rounded corner design.
It effectively protects the box beam flange plate, reduces the damage to the flange plate by the wire rope during the beam lifting process, and improves the appearance quality of the box beam and the safety of the beam lifting.
Smart Images
Figure CN222862084U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of highway engineering, and in particular relates to a box girder lifting beam wing plate protection device. Background Art
[0002] In modern bridge construction technology, prefabricated small box girders are a common structural form of bridge design due to their large cross-sectional torsional strength and bending strength, low cost and fast construction speed, and are widely used at home and abroad. The interior of the prefabricated small box girder is a hollow box chamber with flange plates on both sides of the top. In the process from prefabrication to erection of the box girder, it involves storing and erecting the beam, and the box girder needs to be lifted many times. Due to the large weight of the box girder and the small contact surface of the steel wire rope used for lifting the beam at the flange plate, the concrete at the contact surface between the steel wire rope and the box girder flange plate will be subjected to greater pressure. Under the action of high pressure, it is very easy to cause the edge and angle collapse of the box girder flange plate, which not only affects the aesthetics of the beam body, but also directly affects the overall quality of the box girder. On the other hand, the edges and corners of the flange plate cannot fit well with the steel wire rope, which can easily cause the steel wire rope to wear and break, seriously affecting the safety of the beam lifting process. Utility Model Content
[0003] The utility model aims to provide a box girder lifting wing plate protection device, which can well protect the box girder flange plate when the box girder is lifted, and effectively solves the problem that the edge of the box girder wing plate is damaged by the steel wire rope on the beam body wing plate when the box girder is lifted.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a box girder lifting beam wing plate protection device, which is composed of an upper wing plate, a lower wing plate and a web plate, and is in the shape of an "I" as a whole. The upper wing plate and the lower wing plate are respectively located at the two ends of the web plate, and the upper wing plate, the lower wing plate and the web plate are made in an integrated manner, and the upper wing plate and the lower wing plate are provided with rounded corners away from the ends of the web plate.
[0005] Furthermore, the upper wing plate and the lower wing plate have the same width, and both are greater than the web width.
[0006] Furthermore, the web width is 8-10 cm.
[0007] Furthermore, the upper wing plate, the lower wing plate and the inner wall of the web are all bonded with rubber pads, and the thickness of the rubber pads is 1-3 cm.
[0008] The beneficial effects of the utility model are as follows: the device is integrally cast with high-strength carbon steel, and before the box girder is lifted, the device is installed at the box girder wing plate above the lifting opening. The ingenious structure of the box girder lifting wing plate protection device enables it to fit well on the wing plate and will not slip off, and the box girder flange plate is well protected when the box girder is lifted, effectively solving the problem of the steel wire rope causing damage to the beam body wing plate at the edge of the box girder wing plate when the box girder is lifted. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural schematic diagram of the box girder lifting beam wing plate protection device provided by the utility model;
[0010] Figure 2 The utility model provides Figure 1 Schematic side view of
[0011] Figure 3 The utility model is a schematic diagram of the installation of a box girder lifting beam wing plate protection device.
[0012] In the figure: 1. upper wing plate; 2. lower wing plate; 3. web plate; 4. fillet; 5. rubber pad; 6. box girder flange plate; 7. wire rope; 8. lifting equipment. DETAILED DESCRIPTION
[0013] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.
[0014] Please also refer to Figures 1 to 3 The box girder bail wing plate protection device of the utility model embodiment will be described in detail with reference to the accompanying drawings.
[0015] like Figure 1 As shown, the device consists of an upper wing plate 1, a lower wing plate 2 and a web 3, and is in an "I" shape as a whole. The upper wing plate 1 and the lower wing plate 2 are respectively located at the two ends of the web 3, and the upper wing plate 1, the lower wing plate 2 and the web 3 are made in an integrated manner. The upper wing plate 1 and the lower wing plate 2 are provided with rounded corners 4 at the ends away from the web 3.
[0016] The upper wing plate 1 and the lower wing plate 2 have the same width, and are both greater than the width of the web plate 3 .
[0017] The width of the web 3 is 8-10 cm. Rubber pads 5 are bonded to the upper wing plate 1, the lower wing plate 2 and the inner wall of the web 3. The thickness of the rubber pads 5 is 1-3 cm. The rubber pads 5 can prevent the flange plate from forming a hard contact with the device.
[0018] The upper wing plate 1, the lower wing plate 2 and the web plate 3 are made of high-strength carbon steel, and the clamping parts of the upper wing plate 1, the lower wing plate 2 and the web plate 3 form notches.
[0019] Example
[0020] The web length of the device is adapted to the thickness of the flange plate of the prefabricated box girder, and is slightly larger than the thickness of the box girder flange plate, to prevent the unevenness of the top surface of the box girder from causing installation difficulties. The web width of the device should not be larger than the wet joint steel bar spacing reserved for the box girder flange plate, to avoid bending the exposed steel bars of the flange plate when installing the wing plate protection device. At the same time, it must be larger than the diameter of the wire rope to avoid contact between the wire rope and the flange plate and damage to the concrete surface. If the upper and lower wing plates of the device are set in a rounded form, the wear of the beam lifting wire rope can be reduced.
[0021] In specific tasks, such as Figure 3 As shown, before the box girder is lifted, the lifting point is determined first, and then the positioning device is installed. The notch of the device is first nested in the flange plate of the box girder. If there is still a gap in the notch, use a rubber pad to fill the gap to prevent the device from vertically shifting during lifting. After the device is installed, the wire rope is installed and the wire rope is overlapped on the protective device. At the same time, the flange plates on both sides of the device are bent to reserve steel bars in the wet joints to fix the device and the wire rope to prevent the wire rope from sliding and shifting and the device from shifting horizontally, so as to ensure the integrity of the device and the wire rope during the lifting process of the box girder. On the one hand, this device effectively reduces the damage of the wire rope to the flange plate of the box girder during the lifting process, and improves the appearance quality of the box girder; on the other hand, the device fits well with the wire rope, causing less damage to the wire rope, thereby improving the safety of the box girder lifting operation.
[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A box girder wing plate protection device, characterized in that: The box girder lifting beam wing plate protection device is composed of an upper wing plate (1), a lower wing plate (2) and a web plate (3), and is in an "I" shape as a whole. The upper wing plate (1) and the lower wing plate (2) are respectively located at the two ends of the web plate (3). The upper wing plate (1), the lower wing plate (2) and the web plate (3) are made in an integrated manner, and the ends of the upper wing plate (1) and the lower wing plate (2) away from the web plate (3) are both provided with rounded corners (4).
2. The box girder wing plate protection device according to claim 1 is characterized in that: The upper wing plate (1) and the lower wing plate (2) have the same width, and are both greater than the width of the web plate (3).
3. The box girder wing plate protection device according to claim 2 is characterized in that: The width of the web (3) is 8-10 cm.
4. The box girder wing plate protection device according to claim 1, characterized in that: The inner walls of the upper wing plate (1), the lower wing plate (2) and the web plate (3) are all bonded with rubber pads (5), and the thickness of the rubber pads (5) is 1-3 cm.