Inner mold lifting anti-falling device for caisson prefabrication
By designing a lifting and anti-fall device that includes a base, a sliding assembly, and an inner membrane assembly, the problems of long adjustment time and safety hazards during the inner formwork hoisting process in caisson construction were solved, achieving high efficiency, safety, and economy in construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-03-31
AI Technical Summary
During the construction of the caisson, the process of hoisting and placing the inner formwork presents challenges such as long adjustment time, significant safety hazards, and labor shortages.
Design a lifting and anti-fall device including a base, a sliding assembly, and an inner mold assembly. The device uses components such as I-beams, hydraulic jacks, and chains to achieve continuous casting and lifting of the inner mold, and uses "L"-shaped steel plate anti-fall claws and spring structures to prevent the inner mold from falling.
It simplified the construction process, improved safety and efficiency, reduced labor demand, shortened construction time, reduced material waste, and achieved economic and technical benefits.
Smart Images

Figure CN224060096U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of caisson construction technology, and in particular to a device for lifting and preventing the fall of the inner mold of a prefabricated caisson. Background Technology
[0002] With the development of port and wharf facilities in recent years, caissons have become increasingly larger. Due to their robust and durable structure, good integrity, strong adaptability to load changes, and fast construction speed, they are widely used in wharf and breakwater construction. Their manufacturing relies heavily on skilled workers and requires a large labor force. On the one hand, the construction industry is facing a trend of aging skilled workers and a shortage of skilled workers. On the other hand, the caisson manufacturing process requires the placement of several inner molds within the outer mold to construct the compartments. With continuous social development, the demand for construction equipment is increasing, and construction safety is receiving more and more attention. Related tools and equipment need continuous innovation and improvement. In traditional methods, a significant amount of time is spent adjusting the inner molds during placement and taking measures to prevent them from falling during the slipforming process. This adjustment and prevention of falling inner molds is time-consuming and cannot adequately guarantee worker safety, posing significant safety hazards.
[0003] Therefore, in order to solve the above problems, this utility model provides a device for lifting and preventing the fall of the inner mold of a prefabricated caisson. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model discloses a precast inner mold lifting and anti-fall device for caissons, comprising a base serving as a foundation, on which a sliding assembly and an inner membrane assembly are installed, the sliding assembly and the inner membrane assembly being connected, and the base, the sliding assembly and the inner membrane assembly being connected by connectors and subjected to one-time continuous casting.
[0005] Furthermore, the base includes structure B, which includes four I-beams. Each of the four I-beams is equipped with a fixed hanging column. Two of the I-beams are longitudinally and symmetrically distributed, and the other two are transversely and symmetrically distributed. The two longitudinal I-beams and the two transverse I-beams intersect to form a rectangle, and the length of the longitudinal I-beams is longer than the length of the transverse I-beams.
[0006] Furthermore, two symmetrically distributed steel partitions are provided at one end of the longitudinal H-beam. The steel partitions are welded to the H-beam, and the two steel partitions and the H-beam form a rectangular space. A pulley is rotatably installed in the rectangular space via a pin. A cylindrical steel lifting ring is welded to the longitudinal H-beam, and one end of a spring is installed on the cylindrical steel lifting ring.
[0007] Furthermore, a hole of suitable size is cut out behind the rectangular space on the I-beam, and a guide roller is welded into the hole. An "L"-shaped steel plate anti-fall claw is connected to the guide roller by a pin, and the "L"-shaped steel plate anti-fall claw is connected to the other end of the spring.
[0008] Furthermore, a hanging ring is installed below the "L"-shaped steel plate anti-fall claw.
[0009] Furthermore, the inner membrane assembly includes four inner mold modules connected end to end. The inner mold modules are connected to the base via chains. A caisson wall is provided on the outer side of the inner membrane assembly. A structure A is provided on the caisson wall. The structure A includes steel support holes, which are connected to the caisson wall.
[0010] Furthermore, the slipform assembly includes a hydraulic jack with a support rod mounted on it. The support rod is connected to an inner mold module, which is connected to a fixed hanging column. The support rod is connected to a chain via a tightening screw.
[0011] Furthermore, the slip frame assembly also includes supporting steel bars, which are installed on the caisson wall. An upper crossbeam and a lower crossbeam are installed on the supporting steel bars, with the lower crossbeam located below the upper crossbeam. The lower crossbeam and the upper crossbeam are connected by a bracket, which is connected to a base. A lifting jack is installed on the lower crossbeam.
[0012] Compared with the prior art, the beneficial effects of this utility model are: the construction structure of this device is simple and reasonable, highly adaptable, and easy to manage on site. By enhancing the convenience of application, improving safety, and reducing labor, it will make large-scale and rapid application possible. While reducing construction difficulty, significantly shortening sliding time, ensuring safety, and greatly shortening the construction period, it will also improve economic benefits, demonstrating its superiority. Moreover, the installation difficulty is relatively small, the engineering materials are greatly reduced, the operational capacity can be formed in a short time, and it can be reused to avoid waste, thereby achieving good technical and economic benefits. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a schematic diagram of structure A of this utility model.
[0015] Figure 3 This is a schematic diagram of the base structure of this utility model.
[0016] Figure 4 This is a schematic diagram of the base structure of this utility model in use. Figure 1 .
[0017] Figure 5 This is a schematic diagram of the base structure of this utility model in use. Figure 2 .
[0018] Figure 6 This is a schematic diagram of the base structure of this utility model in use. Figure 3 .
[0019] Reference numerals: 1-Tightening spiral buckle; 2-Support rod; 3-I-beam; 4-Cylindrical steel lifting ring; 5-Spring; 6-Pulley; 7-Guide roller; 8-"L"-shaped steel plate anti-fall claw; 9-Hanging ring; 10-Fixed lifting column; 11-Hydraulic jack; 12-Steel support hole; 13-Steel partition; 14-Inner mold module; 15-Jining box wall; 16-Supporting steel bar; 17-Upper crossbeam; 18-Lower crossbeam; 19-Lifting jack; 20-Corner leg. Detailed Implementation
[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.
[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Example: Figures 1-6As shown, a prefabricated caisson inner mold lifting and anti-fall device includes a base for serving as a foundation, a sliding assembly and an inner membrane assembly installed on the base, the sliding assembly and the inner membrane assembly being connected, the base, the sliding assembly and the inner membrane assembly being connected by connectors and being continuously poured in one go. In this embodiment, when the device is in use, the caisson bottom plate and the caisson partition wall of a certain height have been poured.
[0024] The base includes structure B, which comprises four I-beams 3. Each of the four I-beams 3 is equipped with a fixed hanging column 10. Two of the I-beams 3 are longitudinally and symmetrically distributed, while the other two are transversely and symmetrically distributed. The two longitudinal and two transverse I-beams 3 intersect to form a rectangle, with the length of the longitudinal I-beams 3 being longer than the length of the transverse I-beams 3. Two symmetrically distributed steel partitions 13 are installed at one end of each longitudinal I-beam 3, and the steel partitions 13 are welded to the I-beams 3. The steel partition 13 and the I-beam 3 form a rectangular space. A pulley 6 is installed in the rectangular space by means of a pin. A cylindrical steel lifting ring 4 is welded on the longitudinal I-beam 3. One end of a spring 5 is installed on the cylindrical steel lifting ring 4. A hole of appropriate size is cut at the rear of the rectangular space on the I-beam 3. A guide roller 7 is welded in the hole. An "L"-shaped steel plate anti-fall claw 8 is connected to the guide roller 7 by means of a pin. The "L"-shaped steel plate anti-fall claw 8 is connected to the other end of the spring 5. A hanging ring 9 is installed below the "L"-shaped steel plate anti-fall claw 8.
[0025] The inner membrane assembly includes four inner mold modules 14 connected end to end. The inner mold modules 14 are connected to the base via chains. A caisson wall 15 is provided on the outer side of the inner membrane assembly. A structure A is provided at the bottom of the caisson wall 15. Structure A includes steel support holes 12, which are connected to the caisson wall 15. An "L"-shaped steel plate anti-fall claw 8 contacts the steel support hole 12 and hooks into it. The L-shaped steel plate anti-fall claw 8 prevents the steel support hole 12 from falling. Under the action of the spring 5, the L-shaped steel plate anti-fall claw 8 is pulled down. Then, the pulley 6 on the I-beam 3 contacts the surface of the caisson wall 15. When the pulley 6 slides upward on the caisson wall 15, the L-shaped steel plate anti-fall claw 8 slides along the caisson wall 15 under the action of the spring 5. When it reaches the structure A on the caisson wall 15, the L-shaped steel plate anti-fall claw 8 is reset under the elastic force of the spring 5.
[0026] The slipform assembly includes a hydraulic jack 11, with a support rod 2 mounted on the cylinder arm of the hydraulic jack 11. The cylinder of the hydraulic jack 11 is fixedly mounted on the base. The support rod 2 is connected to the inner mold module 14, which is connected to the fixed hanging column 10. The support rod 2 is connected to the chain via a tensioning screw buckle 1. The slipform assembly also includes a support steel bar 16, which is mounted on the caisson wall 15. An upper crossbeam 17 and a lower crossbeam 18 are mounted on the support steel bar 16. 8 is located below the upper crossbeam 17. The lower crossbeam 18 and the upper crossbeam 17 are connected by a bracket 20. The bracket 20 is connected to the base. A jack 19 is installed on the lower crossbeam 18. The base and the inner membrane assembly are lifted together by lifting the jack 19. When all the "L"-shaped steel plate anti-fall claws 8 in this device are in a horizontal state, the jack 19 stops. After checking the stability of multiple inner mold modules 14, the "L"-shaped steel plate anti-fall claws 8 are then fixed in place through the steel support holes 12.
[0027] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.
Claims
1. A sinking caisson prefabricated inner mold lifting anti-falling device, characterized in that: The application relates to a base for serving as a base, wherein a slide-up assembly and an inner membrane assembly are mounted on the base, the slide-up assembly and the inner membrane assembly are connected, and the base, the slide-up assembly and the inner membrane assembly are connected through a connecting piece and are continuously casted once.
2. The inner mold lifting anti-falling device for caisson prefabrication according to claim 1, characterized in that: The base comprises structure B, four I-shaped steel (3) are arranged on the structure B, two of the I-shaped steel (3) are longitudinally and symmetrically distributed, the other two I-shaped steel (3) are transversely and symmetrically distributed, the two longitudinal I-shaped steel (3) and the two transverse I-shaped steel (3) are staggered to form a rectangle, and the length of the longitudinal I-shaped steel (3) is longer than that of the transverse I-shaped steel (3).
3. The precast caisson inner form lifting anti-falling device according to claim 2, characterized in that: Two symmetrically-distributed steel partition plates (13) are arranged at one end of the longitudinal I-shaped steel (3), the steel partition plates (13) are welded on the I-shaped steel (3), two steel partition plates (13) and the I-shaped steel (3) form a rectangular space, a pulley (6) is rotatably arranged in the rectangular space through a pin shaft, a cylindrical steel lifting ring (4) is welded on the longitudinal I-shaped steel (3), and one end of a spring (5) is arranged on the cylindrical steel lifting ring (4).
4. The precast caisson inner form lifting anti-falling device according to claim 3, characterized in that: A hole with appropriate size is cut at the rear of the rectangular space of the I-shaped steel (3), a guide roller (7) is welded in the hole, an "L"-shaped steel plate anti-falling claw (8) is connected to the guide roller (7) through a pin shaft, and the other end of the spring (5) is connected to the "L"-shaped steel plate anti-falling claw (8).
5. A precast caisson inner form lifting anti-falling device according to claim 4, characterized in that: A hanging ring (9) is arranged below the "L"-shaped steel plate anti-falling claw (8).
6. A precast caisson inner form lifting anti-falling device according to claim 5, characterized in that: The inner membrane assembly comprises four inner mold modules (14), the four inner mold modules (14) are connected in a head-to-tail mode, the inner mold modules (14) are connected to the base through chains, a caisson wall body (15) is arranged outside the inner membrane assembly, structure A is arranged on the caisson wall body (15), the structure A comprises steel support holes (12), and the steel support holes (12) are connected to the caisson wall body (15).
7. A precast caisson inner form lifting anti-falling device according to claim 6, characterized in that: The slide-up assembly comprises a hydraulic jack (11), a support rod (2) is arranged on the hydraulic jack (11), the support rod (2) is connected to the inner mold module (14), the inner mold module (14) is connected to the fixed lifting column (10), and the support rod (2) is connected to the chains through a loose spiral buckle (1).
8. The precast caisson inner form lifting anti-falling device according to claim 7, characterized in that: The slide-up assembly further comprises a support steel bar (16), the support steel bar (16) is arranged on the caisson wall body, an upper cross beam (17) and a lower cross beam (18) are arranged on the support steel bar (16), the lower cross beam (18) is arranged below the upper cross beam (17), the lower cross beam (18) and the upper cross beam (17) are connected through a corbel (20), the corbel (20) is connected to the base, and a lifting jack (19) is arranged on the lower cross beam (18).