A precast box girder side formwork length adjustment device
The side formwork length adjustment device driven by slide rails and hydraulic cylinders solves the problem of complex side formwork length adjustment for box girders and achieves a more efficient operation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI HENGSHENG BRIDGE & TUNNEL STEEL MODULE CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-03
Smart Images

Figure CN224446308U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to beam yard construction equipment for engineering construction, and more particularly to a device for adjusting the length of the side formwork of a precast box girder. Background Technology
[0002] Existing box girder fabrication typically involves fixed-length side molds, which are then fabricated according to the designed length. Multiple identical side molds must be assembled together to achieve the required box girder length. During assembly, the side molds are connected by bolts and fixed to the ground.
[0003] However, sometimes it is necessary to adjust the length of the box girder according to requirements. In this case, the side formwork needs to be separated and removed from the ground, and then adjusting blocks need to be installed between the two side formwork to extend the box girder. The disassembly and installation process is complicated, requires the use of a crane to move the side formwork, takes a long time, and is not conducive to improving work efficiency. Summary of the Invention
[0004] To solve the above problems, the technical solution of this utility model is: a precast box girder side formwork length adjustment device, which includes multiple side forms with the same structure. The side forms are slidably installed on a slide rail. An adjustment block is also provided between adjacent side forms. The two ends of the adjustment block are fixedly connected to the side formwork by bolts. The structure of the adjustment block is the same as that of the side formwork.
[0005] To make the side mold move more smoothly during translation, a base is fixedly installed at the bottom of the side mold, and the two ends of the base are slidably installed on slide rails. A cylinder seat is fixedly installed between the two slide rails. Both the cylinder seat and the slide rails are fixedly connected to the ground. A cylinder is horizontally installed on the cylinder seat, and the piston end of the cylinder is connected to the base.
[0006] To better limit the movement of the side mold during translation, the slide rail is T-shaped, and the base is provided with a limiting block that cooperates with the top of the slide rail. The limiting block is L-shaped.
[0007] The beneficial effects of this utility model are: This utility model achieves the purpose of separating the side molds through the cooperation of the oil cylinder and the slide rail, which facilitates the installation of adjustment blocks between the side molds. This structure eliminates the need to remove the side molds from the ground, thus achieving the purpose of extending the box girder manufacturing requirements. The operation process is simpler and helps to improve work efficiency. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the structure of this utility model.
[0009] Figure 2 This is a side view of the structure of this utility model.
[0010] Figure 3yes Figure 2 Enlarged view of the structure at point A in the middle.
[0011] In the diagram: 1. Side mold; 2. Adjusting block; 4. Oil cylinder; 5. Base; 6. Slide rail; 7. Ground; 8. Limiting block. Detailed Implementation
[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0013] exist Figures 1 to 3 A precast box girder side formwork length adjustment device comprises multiple side forms 1 with identical structures. The side formwork 1 is slidably mounted on a slide rail 6, and an adjustment block 2 is provided between adjacent side forms 1. The two ends of the adjustment block 2 are fixedly connected to the side formwork 1 by bolts, and the structure of the adjustment block 2 is the same as that of the side formwork 1.
[0014] Furthermore, a base 5 is fixedly installed at the bottom of the side mold 1, and the two ends of the base 5 are slidably installed on the slide rails 6. A cylinder seat is fixedly installed between the two slide rails 6. The cylinder seat and the slide rails 6 are both fixedly connected to the ground 7. A cylinder 4 is horizontally installed on the cylinder seat, and the piston end of the cylinder 4 is connected to the base 5.
[0015] Furthermore, the slide rail 6 is T-shaped, and the base 5 is provided with a limiting block 8 that cooperates with the top of the slide rail 6. The limiting block 8 is L-shaped.
[0016] When the length of the box girder side formwork needs to be adjusted, the hydraulic cylinder 4 is activated. The hydraulic cylinder 4 drives the side formwork 1 to slide on the slide rail 6. As needed, the side formwork 1 is controlled to move left or right to separate adjacent side formwork 1s. Then, the adjusting block 2 to be installed is moved between the adjacent side formwork 1s and fixed with bolts, thereby extending the box girder side formwork. This structure is easier to operate, eliminating the need to disassemble the side formwork from the ground and then install the adjusting block, thus improving work efficiency.
[0017] In the description of this utility model, it should be understood that the terms "bottom", "one end", "middle", "other end", "upper", "side", "top", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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.
[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A precast box girder side formwork length adjustment device, comprising multiple side forms (1) with identical structures, characterized in that: The side mold (1) is slidably mounted on the slide rail (6). An adjustment block (2) is also provided between adjacent side molds (1). The two ends of the adjustment block (2) are fixedly connected to the side mold (1) by bolts. The structure of the adjustment block (2) is the same as that of the side mold (1).
2. The precast box girder side form length adjusting device according to claim 1, characterized in that: A base (5) is fixedly installed at the bottom of the side mold (1). The two ends of the base (5) are slidably installed on the slide rail (6). A cylinder seat is fixedly installed between the two slide rails (6). The cylinder seat and the slide rail (6) are both fixedly connected to the ground (7). A cylinder (4) is horizontally installed on the cylinder seat. The piston end of the cylinder (4) is connected to the base (5).
3. The precast box girder side form length adjusting device according to claim 2, characterized in that: The slide rail (6) is T-shaped, and the base (5) is provided with a limiting block (8) that cooperates with the top of the slide rail (6). The limiting block (8) is L-shaped.