Precast beam outer end adjustable formwork device adaptive to beam length change
The precast beam formwork device, composed of the main formwork frame and the outer end formwork frame, utilizes a hydraulic system and wedge block formwork insertion piles to solve the problem of complex beam length adjustment in existing technologies, achieving efficient and convenient adaptive beam length adjustment and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU HIGHWAY ENG GRP CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-10
AI Technical Summary
The existing precast beam formwork is complex and inefficient when adjusting the beam length, requiring frequent operation of hoisting equipment and manual labor, making it difficult to efficiently adapt to the needs of beam length changes.
It consists of a main template frame and an outer end template frame. The length is adjusted by driving the wedge block template insertion pile through a hydraulic system, which simplifies the operation process. Automatic adjustment is achieved by using a hydraulic box and telescopic rod in conjunction with the end channel steel slide rail.
It enables convenient adjustment of precast beam formwork, reduces manual operation, improves production efficiency, adapts to different beam length requirements, and has a simple structure that is easy to use.
Smart Images

Figure CN224476349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precast beam production and construction technology, specifically to an adjustable template device for the outer end of a precast beam that adapts to changes in beam length. Background Technology
[0002] Precast beams are concrete beam components that are prefabricated in a factory and then transported to the construction site for installation. Through standardized template assembly, rebar tying, concrete pouring, and curing processes, the beam production is completed in the factory with millimeter-level precision control. After being transported to the construction site, they are positioned and installed using hoisting machinery and connected to the supporting structure (such as columns and walls) to form an integral whole. They belong to the category of prefabricated structures. Precast beams mainly include box beams and T-beams. In the production process of these precast beams, precast beam templates are required for production and construction.
[0003] In existing technologies, precast beam formwork includes box girder formwork and T-beam formwork. Among them, T-beam formwork is the core forming tool for precast T-beams. It is usually composed of bottom mold, side mold, inner mold and end mold. Through the collaboration of the four main structural and functional components, high-precision precasting is achieved. T-beam formwork needs to be adapted to large transverse and longitudinal slopes and small radius curves. Multi-directional adjustment is achieved through bottom mold slope adjuster, interchangeable length section formwork and wing plate hinge screw.
[0004] While the aforementioned existing technologies have significant beneficial effects, they still have shortcomings:
[0005] When the aforementioned precast beam formwork device is used for precast beam production, it mainly forms the casting space for the precast beam through the main structure of the mold. However, when applied to different production needs, the length of both ends of the precast beam mold needs to be adjusted according to the different beam length requirements. This is to adapt to the changes in the beam length of the precast beam to be installed. When adjusting the beam length of the outer end of the aforementioned T-beam formwork, the length adjustment is achieved by adding wedge block templates between the outer end template and the main template. In this type of adjustment, the end of the entire template needs to be moved outward before adjustment can be made. The operation requires hoisting equipment to lift and move the end, and then hoist the wedge block template into the mold gap to complete the length adjustment. The length adjustment can only be completed after manual connection and fixation. The operation is complicated and inefficient. Therefore, an adjustable template device for the outer end of the precast beam that adapts to changes in beam length is proposed. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides an adjustable template device for the outer ends of precast beams that adapts to changes in beam length. It consists of a main template frame and two outer end template frames at both ends. The outer end template frames can be adjusted and changed according to different precast beam manufacturing requirements. After hoisting the wedge template, the connection is stabilized by inserting the pile, forming different adjustment length processes. Moreover, the adjustment process does not require frequent operation by personnel, saving manpower.
[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable template device for the outer end of a precast beam that adapts to changes in beam length, comprising a main template frame, with outer end template frames distributed at both ends of the main template frame, each outer end template frame including an end frame, an end support frame fixed to the outer wall of the end frame, an end channel steel slide rail fixed to the bottom end of the end support frame, hydraulic boxes fixed to the outer walls on both sides of the end frame, hydraulic cylinders fixed inside the hydraulic boxes, a telescopic rod connected to one end of the hydraulic cylinder, a telescopic frame fixed to one end of the telescopic rod, a wedge template inserted into one end of the end frame, a hook connected to the top of the wedge template, mating surfaces on both sides of the wedge template, and insertion piles arranged on one side of the mating surfaces.
[0008] Preferably, the wedge block template is connected to both ends of the end frame and the main template frame through the two side mating surfaces and the plug-in piles, and the plug-in piles are arranged at equal intervals along one side of the mating surface.
[0009] Preferably, the wedge templates are symmetrically distributed along one end of the end frame, and the top surface of the wedge templates is fixedly welded to the hooks.
[0010] Preferably, the end frame is fixedly connected to the end support frame and the end channel steel slide rail, and the end frame is symmetrically distributed along both ends of the main template frame.
[0011] Preferably, the telescopic frame is fixedly connected to the outer walls of both ends of the main template frame, and the end frame is formed into a telescopic structure by means of a hydraulic cylinder and the telescopic frame.
[0012] Preferably, the main formwork frame includes a beam base platform, side formwork frames are distributed on both sides of the beam base platform, an end formwork frame is fixed to the inner wall of the side formwork frame, a side formwork support frame is fixed to the outer wall of the side formwork frame, and a side formwork channel steel slide rail is fixed to the bottom end of the side formwork support frame.
[0013] Preferably, the side formwork frame is fitted to both sides of the beam base platform, and the side formwork frame is integrally and fixedly connected to the side formwork support frame and the side formwork channel steel slide rail.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This utility model consists of a main template frame and two outer end template frames. The outer end template frames can be adjusted and changed according to different precast beam production requirements. With the help of the hydraulic boxes on both sides of the end frames, the two ends can be opened and controlled synchronously or independently. As the end channel steel slide rail slides and adjusts its extension and retraction in the production site, it can match different beam lengths. After hoisting the wedge block template, the joint is inserted and connected to stabilize it, forming different length adjustment processes. Moreover, the adjustment process does not require frequent operation by personnel, saving manpower and improving overall production efficiency.
[0016] The precast beam formwork device has a simple structure and is convenient to operate. It can realize the combination and separation of molds without frequent manual operation, which is convenient for the casting of precast beams. At the same time, the side mold support frame fixed on the outer wall makes the overall tilt structure of the side mold frame stable, which can help stabilize the overall structure of precast casting and subsequent forming processes.
[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of this utility model;
[0019] Figure 2 This is a three-dimensional structural diagram of the outer end template frame of this utility model;
[0020] Figure 3 This is a three-dimensional structural diagram of the hydraulic tank in the outer end template frame of this utility model;
[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the wedge block template of this utility model.
[0022] In the diagram: 1. Main formwork frame; 101. Beam base platform; 102. Side formwork frame; 103. End formwork frame; 104. Side formwork support frame; 105. Side formwork channel steel slide rail; 2. Outer end formwork frame; 201. End frame; 202. End support frame; 203. End channel steel slide rail; 204. Hydraulic tank; 205. Hydraulic cylinder; 206. Telescopic rod; 207. Telescopic frame; 208. Wedge block formwork; 209. Hook; 210. Butt joint surface; 211. Inserted pile. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-4The adjustable template device for the outer end of the precast beam adapted to changes in beam length in this embodiment includes a main template frame 1, with outer end template frames 2 distributed at both ends of the main template frame 1. The main template frame 1 includes a beam base platform 101, with side template frames 102 distributed on both sides of the beam base platform 101. An end template frame 103 is fixed to the inner wall of the side template frame 102, and a side template support frame 104 is fixed to the outer wall of the side template frame 102. A side template channel steel slide rail 105 is fixed to the bottom end of the side template support frame 104.
[0025] like Figure 1-4 As shown, the adjustable template device for the outer end of the precast beam in this utility model is similar to the existing precast beam outer end template structure. The main improvement of this utility model is that it is composed of a main template frame 1 and two outer end template frames 2 at both ends. The outer end template frames 2 can be adjusted and changed according to different precast beam production requirements. After hoisting the wedge template 208, the splice 211 is inserted and connected for stability, forming different adjustment length processes. Moreover, the adjustment process does not require frequent operation by personnel, saving manpower. The end channel steel slide rail 203 and hydraulic cylinder 205 in this utility model are existing technologies. When using this adjustable template device for the outer end of the precast beam, it can be used through... The beam base platform 101 and the side formwork frames 102 on both sides form a precast beam casting trough space. The side formwork support frame 104 welded and fixed to the side formwork frame 102 and the side formwork channel steel slide rail 105 at the bottom can slide and adjust to fit and align with the two sides of the beam base platform 101, and then the casting operation can be carried out. This precast beam template device has a simple structure and is convenient to operate. It can realize the combination and separation of the mold without frequent manual operation, which is convenient for the casting of precast beams. At the same time, the side formwork support frame 104 fixed on the outer wall makes the overall tilt structure of the side formwork frame 102 stable, which can help stabilize the overall structure of the precast casting and subsequent forming process.
[0026] like Figure 2-4As shown, the outer end template frame 2 includes an end frame 201. An end support frame 202 is fixed to the outer wall of the end frame 201. An end channel steel slide rail 203 is fixed to the bottom end of the end support frame 202. Hydraulic tanks 204 are fixed to the outer walls on both sides of the end frame 201. A hydraulic cylinder 205 is fixed inside the hydraulic tank 204. A telescopic rod 206 is connected to one end of the hydraulic cylinder 205. A telescopic frame 207 is fixed to one end of the telescopic rod 206. A wedge template 208 is inserted into one end of the end frame 201. A hook 209 is connected to the top end of the wedge template 208. The wedge block template 208 has mating surfaces 210 on both sides, and insertion piles 211 are arranged on one side of the mating surface 210. In actual operation, when adjustments are needed based on changes in beam length, the hydraulic cylinder 205 inside the hydraulic tank 204 can be adjusted by personnel. The hydraulic cylinder 205 drives the telescopic rod 206 to generate a telescopic force, forcing the end frame 201 fixed to the hydraulic tank 204 and the beam base platform 101 fixed to the telescopic frame 207 to slide and unfold with the telescopic force. At this time, the end frame 201 is exposed during the sliding process. The gap between the end frame 201 and the side formwork 102 is cleared. The operator can then rotate the wedge template 208 to the appropriate size according to the beam length requirements. The hook 209 on the top surface of the wedge template 208 is lifted by hoisting and inserted into the gap between the end frame 201 and the side formwork 102. After extension, the hydraulic cylinder 205 is driven to retract. At this time, the end frame 201 and the side formwork 102 clamp and insert the wedge template 208 as they retract, completing the adjustment process. Then, casting can begin. This precast beam formwork device is connected to the main formwork frame 1 and... The structure consists of two outer end formwork frames 2, which can be adjusted and changed according to different precast beam production requirements. In conjunction with the hydraulic tanks 204 on both sides of the end frame 201 at both ends, the two ends can be synchronously or independently deployed and controlled. As the end channel steel slide rail 203 slides and extends and adjusts within the production site, it can match different beam lengths. After hoisting the wedge block formwork 208, the splice pile 211 is inserted to stabilize it, forming different adjustment length processes. Moreover, the adjustment process does not require frequent operation by personnel, saving manpower and improving overall production efficiency.
[0027] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. An adjustable formwork device for the outer end of a precast beam that adapts to changes in beam length, comprising a main formwork frame (1), characterized in that, The main template frame (1) has outer end template frames (2) distributed at both ends. The outer end template frame (2) includes an end frame (201). An end support frame (202) is fixed to the outer wall of the end frame (201). An end channel steel slide rail (203) is fixed to the bottom end of the end support frame (202). Hydraulic boxes (204) are fixed to the outer walls on both sides of the end frame (201). A hydraulic cylinder (205) is fixed inside the hydraulic box (204). A telescopic rod (206) is connected to one end of the hydraulic cylinder (205). A telescopic frame (207) is fixed to one end of the telescopic rod (206). A wedge template (208) is inserted into one end of the end frame (201). A hook (209) is connected to the top of the wedge template (208). A mating surface (210) is opened on both sides of the wedge template (208). Insertion piles (211) are arranged on one side of the mating surface (210).
2. The adjustable template device for the outer end of a precast beam adaptable to changes in beam length according to claim 1, characterized in that, The wedge template (208) is connected to the end frame (201) and the two ends of the main template frame (1) through the two side mating surfaces (210) and the plugs (211), respectively, and the plugs (211) are arranged at equal intervals along one side of the mating surface (210).
3. The adjustable template device for the outer end of a precast beam adapting to changes in beam length according to claim 1, characterized in that, The wedge template (208) is symmetrically distributed along one end of the end frame (201), and the top surface of the wedge template (208) is fixedly welded to the hook (209).
4. The adjustable template device for the outer end of a precast beam adapting to changes in beam length according to claim 1, characterized in that, The end frame (201) is fixedly connected to the end support frame (202) and the end channel steel slide rail (203), and the end frame (201) is symmetrically distributed along both ends of the main template frame (1).
5. The adjustable template device for the outer end of a precast beam adaptable to changes in beam length according to claim 1, characterized in that, The telescopic frame (207) is fixedly connected to the outer walls of both ends of the main template frame (1), and the end frame (201) forms a telescopic structure through the hydraulic cylinder (205) and the telescopic frame (207).
6. The adjustable template device for the outer end of a precast beam adapting to changes in beam length according to claim 1, characterized in that, The main formwork frame (1) includes a beam base platform (101), with side formwork frames (102) distributed on both sides of the beam base platform (101). An end formwork frame (103) is fixed to the inner wall of the side formwork frame (102), and a side formwork support frame (104) is fixed to the outer wall of the side formwork frame (102). A side formwork channel steel slide rail (105) is fixed to the bottom end of the side formwork support frame (104).
7. The adjustable template device for the outer end of a precast beam adapting to changes in beam length according to claim 6, characterized in that, The side formwork frame (102) is attached to both sides of the beam base platform (101), and the side formwork frame (102) is integrally and fixedly connected with the side formwork support frame (104) and the side formwork channel steel slide rail (105).