Rapid demolding device for building ground pile pouring
By designing a support frame structure and utilizing a combination of threaded grooves and sliding grooves, the multi-size adaptability of the building pile casting mold was achieved, solving the problem of poor applicability of existing molds and enabling flexible clamping and fixing of different piles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA URBAN CONSTR 13TH ENG BUREAU JIANGSU CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-12
AI Technical Summary
Existing building pile casting molds can only clamp and fix models of the same size during use, which is not very applicable and makes it difficult to adapt to the casting needs of different building piles.
A rapid demolding device for casting building piles was designed. The support frame consists of a first L-shaped frame, a second L-shaped frame, and a third L-shaped frame. Combined with threaded grooves, guide grooves, bidirectional screws, and connecting slides, the device can clamp and fix models of different sizes by adjusting knobs and handles.
实现了对不同尺寸建筑地桩的适用性强,能够适配多种浇筑需求,提高了模具的灵活性和适用性。
Smart Images

Figure CN224224150U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building pile casting technology, and more specifically, to a rapid demolding device for building pile casting. Background Technology
[0002] Formwork for building piles is a key process in pile construction. It is mainly used to create a temporary mold before pouring concrete into the pile to shape the pile into the required form and size. During the pouring process, demolding devices, such as bolted metal frames, are usually used to fix the mold. After the concrete is poured into the mold to form the pile, the demolding device is released and the mold is demolded.
[0003] However, there are various types of foundation pile casting molds in the existing technology. For example, utility model patent CN210256636U involves a mold for prefabricated buildings. This utility model includes a workbench with multiple support legs fixedly installed on the top. Two sets of frame borders of different lengths are placed on the top of the workbench, with two border borders forming a set, and the two sets of border borders forming a frame. Four fixing plates are set on the top of the workbench, and the positions of the fixing plates correspond to the positions of the four border borders. The four border borders form a mold frame that fits against the workbench, allowing concrete to be poured into the frame for easy shaping. After shaping, rotating the adjusting handle causes the threaded rod to rotate and move the border borders, causing the border borders to detach from the mold. Then, the two outermost pneumatic cylinders operate, pushing the sealing blocks upward, thereby detaching the mold from the workbench. Finally, the middle pneumatic cylinder operates while the other two pneumatic cylinders stop, detaching the sealing blocks on the top of the other two pneumatic cylinders from the mold, thus separating the mold.
[0004] Although the mold can detach the model from the workbench and facilitate the separation and removal of the model from the inside of the mold, the device can only clamp and fix models of the same size during use, making it inconvenient to adjust and lacking applicability. It is difficult to adapt to the different casting requirements of building piles. In order to avoid this phenomenon, it is necessary to design a quick demolding device for building pile casting. Utility Model Content
[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0006] To achieve the above objectives, this utility model provides a rapid demolding device for building pile casting, which is achieved by the following specific technical means:
[0007] A rapid demolding device for casting foundation piles includes a support frame, which is square in shape. The support frame includes a first L-shaped frame, two second L-shaped frames, and a third L-shaped frame. The first L-shaped frame, two second L-shaped frames, and the third L-shaped frame are located at the four corners. The first L-shaped frame has two threaded grooves inside, the third L-shaped frame has two guide grooves inside, and each of the two second L-shaped frames has one threaded groove and one guide groove inside. The multiple threaded grooves are divided into two groups, and the internal parts of the two groups of threaded grooves are threaded with bidirectional screws.
[0008] Preferably, the two bidirectional screws are perpendicular to each other, and each bidirectional screw has two external threads on its surface, with the two external threads having opposite helical directions. An adjustment knob is coaxially provided on the surface of the bidirectional screw and is fixed between the two external threads.
[0009] Preferably, the multiple guide grooves are divided into two groups, and connecting slide bars are slidably installed inside the guide grooves of both groups, with the two connecting slide bars being perpendicular to each other.
[0010] Preferably, each set of threaded grooves includes two threaded grooves, which are symmetrically distributed; each set of guide grooves includes two guide grooves, which are symmetrically distributed.
[0011] Preferably, the first L-shaped frame, the two second L-shaped frames, and the third L-shaped frame are all provided with threaded rings, and the inside of each threaded ring is threaded with a threaded limiting rod.
[0012] Preferably, each of the multiple threaded limit rods has a positioning clamp rotatably mounted on one end that is close to each other, and the multiple positioning clamps are all located inside the support frame. Anti-slip pads are provided on the positioning clamps. Each of the multiple threaded limit rods has an adjusting handle fixedly connected to one end that is far from each other, and the multiple adjusting handles are all located outside the support frame.
[0013] Preferably, the first L-shaped frame, the two second L-shaped frames, and the third L-shaped frame are all provided with two symmetrical positioning holes. A guide rod is slidably installed inside the positioning hole, and one end of the guide rod is fixedly connected to the positioning clamp.
[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0015] This utility model, through the setting of a first L-shaped frame, a second L-shaped frame, a third L-shaped frame, a threaded groove, a guide slide, a bidirectional screw, and a connecting slide, allows the device to be easily adjusted and can clamp and fix models of different sizes. It has strong applicability and can be adapted to the pouring needs of different building piles. Attached Figure Description
[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a partial structural schematic diagram of the present invention;
[0019] Figure 3 This is a perspective structural diagram of the present invention;
[0020] Figure 4 This is an enlarged structural diagram of point A;
[0021] Figure 5 This is a schematic diagram of the positioning clamp.
[0022] In the diagram: 1. Support frame; 101. First L-shaped frame; 102. Second L-shaped frame; 103. Third L-shaped frame; 2. Threaded groove; 3. Guide slide groove; 4. Bidirectional screw; 5. Adjustment knob; 6. Connecting slide bar; 7. Threaded ring; 8. Threaded limit rod; 9. Positioning clamp; 10. Anti-slip pad; 11. Adjustment handle; 12. Guide connecting rod. Detailed Implementation
[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.
[0026] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4The diagram shows the structure of the rapid demolding device for building pile casting in this embodiment. The rapid demolding device includes a support frame 1, which is square-shaped. The support frame 1 includes a first L-shaped frame 101, two second L-shaped frames 102, and a third L-shaped frame 103. The first L-shaped frame 101, the two second L-shaped frames 102, and the third L-shaped frame 103 are located at the four corners. The first L-shaped frame 101 has two threaded grooves 2 inside, and the third L-shaped frame 103 has two guide grooves 3 inside. Each of the two second L-shaped frames 102 has one threaded groove 2 and one guide groove 3 inside. The multiple threaded grooves 2 are divided into two groups, and each group of threaded grooves 2 is threadedly connected to a bidirectional screw 4. An adjustment knob 5 is coaxially mounted on the surface of rod 4. When adjusting the fixed range of the support frame 1 to accommodate casting models of different sizes, the bidirectional screw 4 is rotated by turning the adjustment knob 5. Utilizing the threaded engagement between the threaded groove 2 and the bidirectional screw 4, and guided by a guide, the rotating bidirectional screw 4 causes the first L-shaped frame 101, the two second L-shaped frames 102, and the third L-shaped frame 103 to move closer or further apart from each other. The spacing between the first L-shaped frame 101, the two second L-shaped frames 102, and the third L-shaped frame 103 is adjusted according to the size and shape of different models to achieve adaptation. This device is easy to adjust, can clamp and fix models of different sizes, has strong applicability, and can adapt to the casting needs of different building piles.
[0027] It is worth noting that in this embodiment, the adjusting knob 5 is fixed between two external threads, the two bidirectional screws 4 are perpendicular to each other, and each bidirectional screw 4 has two external threads on its surface, and the helical directions of the two external threads are opposite; each set of thread grooves 2 includes two, and the two thread grooves 2 are symmetrically distributed; each set of guide grooves 3 includes two, and the two guide grooves 3 are symmetrically distributed.
[0028] like Figure 1 as well as Figure 2 As shown, in this embodiment, the multiple guide grooves 3 are divided into two groups, and connecting slide bars 6 are slidably installed inside the guide grooves 3 of both groups. The two connecting slide bars 6 are perpendicular to each other. In order to position and guide the two movable second L-shaped frames 102 and the third L-shaped frame 103, the sliding cooperation between the guide grooves 3 and the connecting slide bars 6 is used to make the two second L-shaped frames 102 and the third L-shaped frame 103 slide on the connecting slide bars 6, thereby stabilizing the support frame 1.
[0029] like Figure 5As shown, in this embodiment, the first L-shaped frame 101, the two second L-shaped frames 102, and the third L-shaped frame 103 are all permeated with threaded rings 7. Threaded limiting rods 8 are threadedly connected inside the threaded rings 7. Positioning clamps 9 are rotatably mounted on the ends of the multiple threaded limiting rods 8 that are close to each other. The multiple positioning clamps 9 are all located inside the support frame 1, and anti-slip pads 10 are provided on the positioning clamps 9. Adjusting handles 11 are fixedly connected to the ends of the multiple threaded limiting rods 8 that are far from each other, and the multiple adjusting handles 11 are all located outside the support frame 1. After the dimensions of the support frame 1 are fixed, by rotating the multiple adjusting handles 11, the adjusting handles 11 drive the threaded limiting rods 8 to rotate together. Due to the threaded engagement between the threaded rings 7 and the threaded limiting rods 8, one end of the threaded limiting rods 8 can push the positioning clamps 9 to move, causing the multiple positioning clamps 9 to move closer or further apart, clamping and fixing the casting model inside the support frame 1, thereby injecting concrete into the casting model to form a building pile.
[0030] It is worth noting that in this embodiment, the first L-shaped frame 101, the two second L-shaped frames 102, and the third L-shaped frame 103 are all provided with two symmetrical positioning holes. A guide rod 12 is slidably installed inside the positioning hole, and one end of the guide rod 12 is fixedly connected to the positioning clamp 9. In order to position and guide the moving positioning clamp 9, the sliding action between the positioning hole and the guide rod 12 is used to guide the positioning clamp 9 to move stably with the guide rod 12.
[0031] 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 rapid demolding device for casting foundation piles, comprising a support frame (1), the support frame (1) being square-shaped, characterized in that: The support frame (1) includes a first L-shaped frame (101), two second L-shaped frames (102) and a third L-shaped frame (103). The first L-shaped frame (101), two second L-shaped frames (102) and the third L-shaped frame (103) are located at the four corners respectively. The first L-shaped frame (101) has two threaded grooves (2) inside, the third L-shaped frame (103) has two guide grooves (3) inside, and each of the two second L-shaped frames (102) has one threaded groove (2) and one guide groove (3) inside. The multiple threaded grooves (2) are divided into two groups, and the two groups of threaded grooves (2) are threadedly connected to a bidirectional screw (4).
2. The rapid demolding device for building pile casting according to claim 1, characterized in that: The two bidirectional screws (4) are perpendicular to each other. Each bidirectional screw (4) has two external threads on its surface, and the two external threads have opposite helical directions. An adjustment knob (5) is coaxially arranged on the surface of the bidirectional screw (4), and the adjustment knob (5) is fixed between the two external threads.
3. The rapid demolding device for building pile casting according to claim 1, characterized in that: Multiple guide grooves (3) are divided into two groups. Connecting slide bars (6) are slidably installed inside the two groups of guide grooves (3). The two connecting slide bars (6) are perpendicular to each other.
4. The rapid demolding device for building pile casting according to claim 1, characterized in that: Each set of threaded grooves (2) includes two, and the two threaded grooves (2) are symmetrically distributed; each set of guide grooves (3) includes two, and the two guide grooves (3) are symmetrically distributed.
5. The rapid demolding device for building pile casting according to claim 1, characterized in that: The first L-shaped frame (101), the two second L-shaped frames (102) and the third L-shaped frame (103) are all provided with threaded rings (7), and the threaded rings (7) are all threadedly connected to threaded limit rods (8).
6. A rapid demolding device for building pile casting according to claim 5, characterized in that: Each of the multiple threaded limit rods (8) has a rotatable positioning clamp (9) at one end that is close to each other, and the multiple positioning clamps (9) are all located inside the support frame (1). Anti-slip pads (10) are provided on the positioning clamps (9). Each of the multiple threaded limit rods (8) has an adjustment handle (11) fixedly connected at one end that is far from each other, and the multiple adjustment handles (11) are all located outside the support frame (1).
7. A rapid demolding device for building pile casting according to claim 1, characterized in that: The first L-shaped frame (101), the two second L-shaped frames (102) and the third L-shaped frame (103) are all provided with two symmetrical positioning holes. A guide rod (12) is slidably installed inside the positioning hole, and one end of the guide rod (12) is fixedly connected to the positioning clamp (9).