Hydraulic demoulding device for full-precast concrete modules
By combining hydraulic lifting cylinders and high-strength metal fixing plates, the problem of difficulty in controlling accuracy and direction during the demolding process of fully precast concrete modules is solved, achieving precise demolding and plaster-free results, thus improving production quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTRUCTION SCIENCE & TECHNOLOGY GROUP CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, it is difficult to guarantee the accuracy and orientation of fully precast concrete modules during demolding, which leads to incoordination and jamming between the module and the mold, making it prone to cracking. Furthermore, the poor accuracy of the top plate requires manual smoothing, making it impossible to achieve plaster-free operation.
A hydraulic lifting cylinder is used to drive the inner template downward for demolding. Combined with a high-strength metal fixing plate and a smoothing roller, the demolding process is precisely controlled, reducing the pressure on the wall. A vibratory demolding machine is also used to assist in demolding.
It achieves precise control of the demolding process, avoids module cracking, and the top plate can be precisely leveled without plastering, thus improving production efficiency and quality.
Smart Images

Figure CN224544887U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of demolding technology, and in particular to a hydraulic demolding device for fully precast concrete modules. Background Technology
[0002] With the development of prefabricated construction, fully precast concrete modules are gradually being accepted. These modules offer advantages such as convenient construction, controllable quality, and high production efficiency. Current production technology for fully precast concrete modules uses integral molds, where the outer formwork uses segmented large steel molds combined with sliding rails for demolding. Some inner molds also use segmented sliding rails for demolding, but this method is less efficient. Therefore, the most common approach is to use integral inner molds. However, when using integral inner molds, the concrete module must be lifted as a whole to detach it from the inner mold. Because the force applied by the hooks is difficult to guarantee in terms of precision and direction, the module is prone to cracking due to excessive tension caused by misalignment between the concrete and the mold. Furthermore, the top slab of ordinary large steel molds is still manually smoothed, resulting in poor precision and making it impossible to achieve plaster-free floor slabs. Utility Model Content
[0003] The purpose of this utility model embodiment is to provide a hydraulic demolding device for fully precast concrete modules, which aims to solve the quality problem in the prior art where it is difficult to ensure accuracy and orientation when the concrete module is lifted as a whole during demolding, and the incoordination and jamming between the concrete and the mold leads to excessive tension and cracking of the module.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A hydraulic demolding device for precast concrete modules includes a steel mold base, a vibrator installed inside the steel mold base, a groove formed in the middle of the upper end of the steel mold base, and a hydraulic lifting cylinder fixedly connected to the top of the vibrator within the groove; multiple hydraulic lifting cylinders are provided and evenly distributed within the groove, and an inner template is fixedly connected to the top of each hydraulic lifting cylinder, the inner template being located in the middle of the upper end of the steel mold base; a first fixing plate is connected to each of the opposite sides of the upper end of the steel mold base; a second fixing plate is connected to each of the other opposite sides of the upper end of the steel mold base, the first fixing plates and the second fixing plates are interconnected to form an outer template, and the outer template and the inner template together form a concrete mold.
[0006] Furthermore, a guide rail extending along the length of the first fixed plate is connected to the first fixed plate, and a smoothing roller extending along the length of the second fixed plate is connected to the guide rail. The smoothing roller can roll along the length of the guide rail.
[0007] Furthermore, the inner template, the first fixing plate, and the second fixing plate are all made of high-strength metal.
[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0009] 1. This utility model reduces the pressure on the wall caused by the removal of the inner formwork by using a hydraulic lifting cylinder to drive the inner formwork downward. Even if the formwork is difficult to remove, the pressure of the removal load on the concrete will not cause the wall to crack, thus minimizing quality problems.
[0010] 2. This utility model achieves a smooth, level concrete slab without plastering by using a smoothing roller to flatten the top of the concrete. Attached Figure Description
[0011] Figure 1 This is a three-dimensional structural diagram of the hydraulic demolding device for fully precast concrete modules provided in this embodiment of the utility model.
[0012] The labels for the attached figures are as follows:
[0013] 1. Steel mold base; 2. Hydraulic lifting cylinder; 3. Inner template; 4. Outer template; 41. First fixing plate; 42. Second fixing plate; 5. Groove; 6. Guide rail; 7. Smoothing roller. Detailed Implementation
[0014] 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.
[0015] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they 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.
[0016] like Figure 1As shown, this utility model embodiment provides a hydraulic demolding device for fully precast concrete modules. The hydraulic demolding device for fully precast concrete modules includes a steel mold base 1, a vibrator (not shown in the figure) installed inside the steel mold base 1, a groove 5 is provided in the middle of the upper end of the steel mold base 1, and a hydraulic lifting cylinder 2 located in the groove 5 is fixedly connected to the top of the vibrator; multiple hydraulic lifting cylinders 2 are provided and are evenly distributed in a matrix in the groove 5, and an inner template 3 is fixedly connected to the top of the hydraulic lifting cylinder 2, the inner template 3 is located in the middle of the upper end of the steel mold base 1; a first fixing plate 41 is connected to each of the opposite sides of the upper end of the steel mold base 1, and a second fixing plate 42 is connected to each of the other opposite sides of the upper end of the steel mold base 1. The first fixing plate 41 and the second fixing plate 42 are connected to each other to form an outer template 4, and the outer template 4 and the inner template 3 form a concrete mold.
[0017] During operation, the hydraulic lifting cylinder 2 is activated, causing the inner template 3 to move upwards. The hydraulic lifting cylinder 2, in conjunction with the inner template 3, the first fixing plate 41, and the second fixing plate 42, forms a concrete mold. A release agent is sprayed onto the inside of the mold, and then concrete is poured into it. A vibrator is then activated to compact the concrete, rapidly expelling air from the mold. After the concrete has solidified, the vibrator is restarted at a high frequency. This vibration, combined with the release agent, helps the solidified module separate from the device. The hydraulic lifting cylinder 2 is then activated again, with real-time load control via a hydraulic cylinder sensor, causing it to move the inner template 3 downwards, completing the demolding process and ensuring horizontal accuracy while minimizing errors. This structure, employing a downward demolding method, reduces the pressure on the wall from the detached concrete module. Even if demolding is difficult, the pressure from the demolding load on the concrete will not cause wall cracking, thus minimizing quality issues.
[0018] In some embodiments, a guide rail 6 extending along the length direction of the first fixed plate 41 is connected to the first fixed plate 41, and a smoothing roller 7 extending along the length direction of the second fixed plate 42 is connected to the guide rail 6. The smoothing roller 7 can roll along the length direction of the guide rail, and the top of the concrete is smoothed by pushing and pulling the smoothing roller 7, so as to achieve a smooth and level top floor without plastering.
[0019] In some embodiments, the inner template 3, the first fixing plate 41, and the second fixing plate 42 are all made of high-strength metal. During operation, the high-strength metal provides good metal strength to the inner template 3, the first fixing plate 41, and the second fixing plate 42, making the surface of the mold more flat. Through the above structure, the device components obtain good metal strength, making the surface of the mold more flat and increasing the processing quality of the device.
[0020] In summary, the hydraulic demolding device for precast concrete modules provided by this utility model activates the hydraulic lifting cylinder 2 during demolding, causing the inner formwork 3 to move downwards. This movement is controlled by the electrically controlled hydraulic lifting cylinder 2, ensuring the horizontal accuracy of the demolding process, reducing errors, and allowing for precise load control through real-time feedback from the hydraulic cylinder sensor. Furthermore, because the downward demolding of the inner formwork applies pressure to the concrete module relative to the wall, even if demolding is difficult, the pressure from the demolding load on the concrete will not cause cracks in the wall, thus avoiding quality problems.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A hydraulic demolding device for fully precast concrete modules, characterized in that: The system includes a steel mold base, within which a vibrator is installed. A groove is formed in the middle of the upper end of the steel mold base, and a hydraulic lifting cylinder is fixedly connected to the top of the vibrator within the groove. Multiple hydraulic lifting cylinders are evenly distributed within the groove, and an inner template is fixedly connected to the top of each cylinder. The inner template is located in the middle of the upper end of the steel mold base. First fixing plates are connected to opposite sides of the upper end of the steel mold base, and second fixing plates are connected to the other opposite sides of the upper end of the steel mold base. The first and second fixing plates are interconnected to form an outer template, and the outer template and the inner template together form a concrete mold.
2. The hydraulic demolding device for fully precast concrete modules according to claim 1, characterized in that: A guide rail extending along the length of the first fixed plate is connected to the first fixed plate, and a smoothing roller extending along the length of the second fixed plate is connected to the guide rail. The smoothing roller can roll along the length of the guide rail.
3. The hydraulic demolding device for fully precast concrete modules according to claim 1, characterized in that: The inner template, the first fixing plate, and the second fixing plate are all made of high-strength metal.