Formwork structure for precast beam

Abstract

The utility model relates to a formwork structure for a precast beam, which belongs to the technical field of precast beam formworks and comprises a mounting base, a bottom formwork is fixedly mounted at the top of the mounting base, movable bottom boxes are fixedly mounted on two side surfaces of the mounting base, a bottom plate is fixedly mounted at the tops of the movable bottom boxes, and side formworks are fixedly mounted at the top of the bottom plate. A movable base is fixedly mounted at the bottom of the bottom plate and slidably mounted in the movable bottom box. According to the formwork structure for the precast beam, the bottom plate is arranged at the bottom of the side formwork, the movable base is arranged at the bottom of the bottom plate, and the control screw controls the movable base to move in the movable bottom box, drives the side formwork to move and is combined with or separated from the bottom formwork, so that the formwork is conveniently separated from the precast beam, and the problem that when a common formwork structure for the precast beam is used, the formwork structure is inconvenient to use is solved. The problems that a bottom die and a side die need to be assembled firstly, the side die is supported through an external supporting structure, after pouring is completed, the side die needs to be disassembled, and the disassembling process is troublesome are solved.

Description

Technical Field

[0001] This utility model relates to the field of precast beam formwork technology, specifically to formwork structures for precast beams. Background Technology

[0002] Precast beams are concrete beams manufactured in factories using centralized processing methods. They offer advantages such as reliable quality, high production efficiency, short construction cycles, and less environmental pollution, effectively improving project quality and construction efficiency. The main types of precast beams include T-shaped precast beams, box-type precast beams, and U-shaped precast beams, and they are widely used in bridge construction in railways, highways, urban rail transit, and municipal engineering projects.

[0003] The main steps in precast beam production include: formwork preparation: selecting suitable formwork according to design requirements and cleaning and oiling it; rebar tying: tying the rebar according to the design drawings, ensuring the position and spacing of the rebar meet the requirements; concrete pouring: pouring concrete into the formwork and vibrating it to ensure compaction; curing: curing the poured concrete to achieve the design strength; and formwork removal: after the concrete has reached a certain strength, removing the formwork to complete the precast beam production.

[0004] Among them, precast beam formwork is a tool specifically used to make precast beams. It is usually made of steel, wood or composite materials. It provides the necessary shape and support for concrete pouring and ensures that the size and shape of the precast beam meet the design requirements. It includes steel formwork, wooden formwork and composite material formwork, etc.

[0005] Common precast beam formwork structures require the bottom and side forms to be assembled first, and the side forms to be supported by external support structures. After the casting is completed, the side forms need to be removed, which is a rather troublesome process. In view of this, this application proposes a precast beam formwork structure. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a template structure for precast beams, which has the advantages of facilitating the separation of the template from the precast beam. It solves the problem that common precast beam template structures require the bottom and side molds to be assembled first, the side molds to be supported by external support structures, and the side molds to be removed after the pouring is completed, which is a rather troublesome disassembly process.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a template structure for precast beams, including an installation base, a bottom mold fixedly installed on the top of the installation base, movable base boxes fixedly installed on both sides of the installation base, a base plate fixedly installed on the top of the movable base box, a side mold fixedly installed on the top of the base plate, and a movable base fixedly installed on the bottom of the base plate. The movable base is slidably installed inside the movable base box, and a control screw is rotatably installed on the inner side wall of the movable base box, the control screw being threadedly connected to the movable base.

[0008] Furthermore, a transmission box is fixedly installed on one side of the movable base box, and a double-layer pulley is fixedly installed on the surface of the control screw extending into the transmission box. The two double-layer pulleys are connected by belt drive.

[0009] Furthermore, a gearbox is fixedly installed on one side of the transmission box, and a crank handle is rotatably installed on one side of the gearbox.

[0010] Furthermore, a gear set is rotatably mounted inside the gearbox, the output shaft of the gear set is fixedly connected to one end of one of the control screws, and the crank handle is fixedly connected to the input shaft of the gear set.

[0011] Furthermore, a rear transverse rib is fixedly installed on the back of the side mold, and side baffles are fixedly installed at both ends of the rear transverse rib.

[0012] Furthermore, a short support column is fixedly installed on one side of the rear transverse rib on one side of the long straight section of the side mold, and a long support column is fixedly installed on one side of the rear transverse rib on one side of the short straight section of the side mold.

[0013] Furthermore, a connecting beam is fixedly installed between the short and long pillars, and a diagonal brace is fixedly installed on one side of the long pillar, with the bottom end of the diagonal brace fixedly installed on the top of the base plate.

[0014] Compared with the prior art, this utility model provides a formwork structure for precast beams, which has the following beneficial effects:

[0015] This precast beam formwork structure uses a base plate at the bottom of the side formwork, with a movable base at the bottom of the base plate. A control screw moves the movable base within a movable base box, causing the side formwork to move and connect or separate from the bottom formwork. This facilitates the separation of the formwork from the precast beam, solving the problem of common precast beam formwork structures requiring the bottom and side formwork to be assembled first, supported by external support columns, and then disassembled after pouring, which is a cumbersome process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2This is a front view schematic diagram of the side mold of this utility model;

[0018] Figure 3 This is a side sectional view of the side mold of this utility model;

[0019] Figure 4 This is a three-dimensional view of the side mold of this utility model.

[0020] In the diagram: 1. Mounting base; 2. Bottom mold; 3. Side mold; 4. Base plate; 5. Movable base box; 6. Movable base; 7. Control screw; 8. Transmission box; 9. Double-layer pulley; 10. Gearbox; 11. Handle; 12. Gear set; 13. Rear cross rib; 14. Side baffle; 15. Short support column; 16. Long support column; 17. Connecting crossbeam; 18. Diagonal brace. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figures 1 to 4 The precast beam formwork structure includes an installation base 1, a bottom mold 2 fixedly installed on the top of the installation base 1, movable base boxes 5 fixedly installed on both sides of the installation base 1, a base plate 4 fixedly installed on the top of the movable base box 5, a side mold 3 fixedly installed on the top of the base plate 4, and a movable base 6 fixedly installed on the bottom of the base plate 4. The movable base 6 is slidably installed inside the movable base box 5. A control screw 7 is rotatably installed on the inner side wall of the movable base box 5 and is threadedly connected to the movable base 6. Rotation of the control screw 7 causes the movable base 6 to move inside the movable base box 5, which in turn moves the base plate 4 and the side mold 3, facilitating the assembly and disassembly of the side mold 3.

[0023] Meanwhile, a transmission box 8 is fixedly installed on one side of the movable base box 5, and a double-layer pulley 9 is fixedly installed on the surface of the control screw 7 extending into the transmission box 8. The two double-layer pulleys 9 are connected by belt drive.

[0024] Among them, a gearbox 10 is fixedly installed on one side of the transmission box 8, and a crank handle 11 is rotatably installed on one side of the gearbox 10.

[0025] Secondly, a gear set 12 is rotatably mounted inside the gearbox 10. The output shaft of the gear set 12 is fixedly connected to one end of one of the control screws 7, and the crank handle 11 is fixedly connected to the input shaft of the gear set 12. Turning the crank handle 11 drives the gear set 12 to work, which in turn drives one of the control screws 7 to rotate, which in turn drives the double-layer pulleys 9 to rotate. Through the belt, all the double-layer pulleys 9 rotate, which in turn drives all the control screws 7 to rotate, causing the movable base 6 to move inside the movable base box 5.

[0026] Meanwhile, a rear transverse rib 13 is fixedly installed on the back of the side mold 3, and side baffles 14 are fixedly installed at both ends of the rear transverse rib 13. The rear transverse rib 13 increases the strength of the side mold 3 and prevents the side mold 3 from deforming.

[0027] Among them, a short support column 15 is fixedly installed on one side of the rear transverse rib 13 on one side of the long straight section of the side mold 3, and a long support column 16 is fixedly installed on one side of the rear transverse rib 13 on one side of the short straight section of the side mold 3.

[0028] Example 2: Please refer to Figures 1 to 4 Based on Embodiment 1, a connecting beam 17 is fixedly installed between the short support column 15 and the long support column 16. A diagonal brace 18 is fixedly installed on one side of the long support column 16, and the bottom end of the diagonal brace 18 is fixedly installed on the top of the base plate 4. The diagonal brace 18 supports the long support column 16, thereby supporting the side mold 3 and enhancing the stability of the side mold 3.

[0029] In this embodiment, when the crank handle 11 is turned, the gear set 12 is driven to work, which drives one of the control screws 7 to rotate, which drives the double-layer pulley 9 to rotate. Through the belt, all the double-layer pulleys 9 are driven to rotate, which drives all the control screws 7 to rotate, which drives the movable base 6 to move inside the movable base box 5, closing the two side molds 3 with the bottom mold 2, and then the precast beam is poured. After the pouring is completed, the crank handle 11 is turned to separate the side molds 3 from the precast beam, which makes it easier to remove the precast beam and improves the efficiency of the installation and disassembly of the precast beam template.

[0030] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] 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 beam formwork structure, including an installation base (1), characterized in that: The mounting base (1) is fixedly mounted with a bottom mold (2) on its top. The mounting base (1) is fixedly mounted with a movable base box (5) on both sides. The movable base box (5) is fixedly mounted with a base plate (4) on its top. The base plate (4) is fixedly mounted with a side mold (3) on its top. The base plate (4) is fixedly mounted with a movable base (6) on its bottom. The movable base (6) is slidably mounted inside the movable base box (5). The inner side wall of the movable base box (5) is rotatably mounted with a control screw (7). The control screw (7) is threadedly connected to the movable base (6).

2. The formwork structure for precast beams according to claim 1, characterized in that: A transmission box (8) is fixedly installed on one side of the movable base box (5). A double-layer pulley (9) is fixedly installed on the surface of the control screw (7) extending into the transmission box (8). The two double-layer pulleys (9) are connected by belt drive.

3. The formwork structure for precast beams according to claim 2, characterized in that: A gearbox (10) is fixedly installed on one side of the transmission box (8), and a crank (11) is rotatably installed on one side of the gearbox (10).

4. The formwork structure for precast beams according to claim 3, characterized in that: The gearbox (10) is rotatably mounted with a gear set (12). The output shaft of the gear set (12) is fixedly connected to one end of one of the control screws (7), and the crank handle (11) is fixedly connected to the input shaft of the gear set (12).

5. The formwork structure for precast beams according to claim 1, characterized in that: The back of the side mold (3) is fixedly installed with a rear transverse rib (13), and both ends of the rear transverse rib (13) are fixedly installed with side baffles (14).

6. The formwork structure for precast beams according to claim 5, characterized in that: A short support column (15) is fixedly installed on one side of the rear transverse rib (13) on one side of the long straight section of the side mold (3), and a long support column (16) is fixedly installed on one side of the rear transverse rib (13) on one side of the short straight section of the side mold (3).

7. The formwork structure for precast beams according to claim 6, characterized in that: A connecting beam (17) is fixedly installed between the short support (15) and the long support (16). A diagonal brace (18) is fixedly installed on one side of the long support (16), and the bottom end of the diagonal brace (18) is fixedly installed on the top of the base plate (4).

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