Assembly type post-cast strip adjustable early closing formwork system
By using an adjustable early-closing formwork system with prefabricated post-pouring strips, the position of the reinforcing bars is restricted by anchor plates and threaded rods, which solves the problem of rebar misalignment in steel formwork, improves the strength of precast slabs, shortens the construction period, and reduces costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN SIJIAN GRP CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-24
AI Technical Summary
When using existing steel formwork for pouring concrete, the grooves designed for rebar installation are easily affected by external forces, causing displacement and impacting the strength of the precast slab.
An adjustable early-closing formwork system with prefabricated post-pouring strips is adopted, including a track frame, fixed steel formwork, side plates, and rebar anchoring mechanism. The position of the rebar is restricted by the cooperation of the anchoring plate, threaded rod, and wedge block to prevent displacement.
It effectively restricts the position of reinforcing bars, improves the strength of precast slabs, avoids external interference, shortens the construction period, reduces formwork turnover costs, and avoids leakage risks.
Smart Images

Figure CN224161420U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building formwork technology, and in particular to an adjustable early-closing formwork system for prefabricated post-pouring strips. Background Technology
[0002] The prefabricated adjustable early-closing formwork system for post-pouring strips is an innovative construction technology system. It achieves rapid closure of the post-pouring strip area through prefabricated standardized reinforced concrete / steel cover plates and independent adjustable support structures. This system employs modular hoisting and precise leveling supports, completing backfilling and waterproofing in advance, shortening the construction period by more than 30%, reducing formwork turnover costs, and avoiding the leakage risks of traditional processes. It combines high efficiency, safety, and environmental advantages.
[0003] Currently, existing steel formwork for casting construction typically has the following drawbacks: it relies solely on designed grooves for rebar installation, making it susceptible to external interference and displacement, which affects the strength of the produced precast slabs. Therefore, this utility model proposes an adjustable early-closing formwork system with prefabricated post-pouring strips to solve the above problems. Utility Model Content
[0004] To address the aforementioned issues, this utility model proposes an adjustable early-closing formwork system for prefabricated post-pouring strips. This system solves the problem in the prior art where reinforcement is installed solely through designed grooves, which is susceptible to external interference and displacement, thus affecting the strength of the precast slab.
[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: an adjustable early-closing template system for prefabricated post-pouring strips, including a track frame, a fixed steel template and side plates, characterized in that: a fixed steel template is fixedly connected to one side of the track frame, side plates are symmetrically hinged to both sides of the fixed steel template, a movable steel template is provided on the other side of the track frame, a driving mechanism matching the movable steel template is provided on one side of the track frame, and a rebar anchoring mechanism is provided between the two side plates.
[0006] A further improvement is made in that: the rebar anchoring mechanism includes an anchoring plate, anchoring holes, a top plate, rollers, threaded rods, and wedge blocks. An anchoring plate is mounted on the top of the two side plates. The top plate is symmetrically hinged to both sides of the anchoring plate. The top of the top plate is hinged to a roller. Threaded rods are symmetrically threaded to both sides of the top of the anchoring plate. The bottom of the threaded rods is rotatably connected to a wedge block.
[0007] A further improvement is that: the two sides of the anchor plate are symmetrically provided with movable grooves, the top plate is located inside the movable grooves, and the inclined surface at the bottom of the wedge block is in contact with the outer wall of the roller.
[0008] A further improvement is that: positioning blocks are symmetrically fixedly connected to both sides of the movable steel template, and a locking mechanism is provided between the side plate and the positioning blocks.
[0009] A further improvement is that the locking mechanism includes a socket and a rod. The top and bottom of the side plate are fixedly connected to the socket, the rod is inserted into the socket, and the bottom end of the rod passes through the interior of the positioning block. One side of the side plate is provided with a slot that matches the positioning block.
[0010] A further improvement is made in that: the driving mechanism includes a connecting seat, a connecting beam, and a hydraulic cylinder; a connecting seat is symmetrically fixedly connected to one side of the movable steel template; multiple hydraulic cylinders are fixedly installed on one side of the track frame; a connecting beam is fixedly connected between two connecting seats; the output end of the hydraulic cylinder is fixedly connected to one side of the connecting beam; and the bottom of the movable steel template is slidably connected to the top of the track frame.
[0011] A further improvement is that: both the movable steel template and the fixed steel template are provided with a reinforcing frame on one side. The reinforcing frame is composed of horizontal plates and vertical plates, which are perpendicular to each other and form a cross shape.
[0012] The beneficial effects of this utility model are as follows: the rebar plate is installed on the top of the two side plates. Tightening the threaded rod in the forward direction drives the wedge block to move downward. The wedge block is used to tighten the roller at the top of the top plate, which drives the bottom of the top plate to move towards the side plate. The side plate is clamped by the top plate, and the rebar plate is fixed on the top of the side plate. Rebars are inserted into the rectangular frame through the rebar holes at the top of the rebar plate, which can restrict the position of the rebars and prevent the rebars from shifting and affecting the strength of the precast slab. Attached Figure Description
[0013] Figure 1 This is the front view of the present invention;
[0014] Figure 2 This is a schematic diagram of the unfolded state of this utility model;
[0015] Figure 3 This is a schematic diagram of the rebar anchoring mechanism of this utility model;
[0016] Figure 4 This utility model Figure 3 A magnified view of part A.
[0017] The components include: 1. Track frame; 2. Fixed steel formwork; 3. Side plate; 4. Movable steel formwork; 5. Rebar plate; 6. Rebar hole; 7. Top plate; 8. Roller; 9. Threaded rod; 10. Wedge block; 11. Insertion hole; 12. Positioning block; 13. Insert rod; 14. Connecting seat; 15. Connecting beam; 16. Hydraulic cylinder; 17. Reinforcing frame. Detailed Implementation
[0018] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.
[0019] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes an adjustable early-closing formwork system for prefabricated post-pouring strips, including a track frame 1, a fixed steel formwork 2, and side plates 3. The system is characterized by: a fixed steel formwork 2 fixedly connected to one side of the track frame 1; side plates 3 symmetrically hinged to both sides of the fixed steel formwork 2; a movable steel formwork 4 on the other side of the track frame 1; a driving mechanism matching the movable steel formwork 4 on one side of the track frame 1; and a rebar anchoring mechanism between the two side plates 3. The driving mechanism drives the movable steel formwork 4 to move towards the fixed steel formwork 2 until the bottom of the movable steel formwork 4 and the fixed steel formwork 2 are in contact. The side plates 3 on both sides of the fixed steel formwork 2 are rotated to fit against the sides of the movable steel formwork 4, forming a rectangular frame structure. The rebar anchoring mechanism is fixed to the top of the side plates 3, and rebar is anchored within the rectangular frame through the rebar anchoring mechanism. The rebar anchoring mechanism can restrict the position of the rebar, preventing the rebar from being easily disturbed by external forces and shifting, thus affecting the strength of the precast slab.
[0020] The rebar anchoring mechanism includes an anchoring plate 5, anchoring holes 6, a top plate 7, a roller 8, a threaded rod 9, and a wedge block 10. The anchoring plate 5 is mounted on the top of the two side plates 3. The top plate 7 is symmetrically hinged to both sides of the anchoring plate 5. The roller 8 is hinged to the top of the top plate 7. Threaded rods 9 are symmetrically threaded to both sides of the top of the anchoring plate 5. The bottom end of the threaded rod 9 is rotatably connected to the wedge block 10. The anchoring plate 5 has symmetrical movable grooves on both sides. The top plate 7 is located inside the movable grooves. The inclined surface at the bottom of the wedge block 10 fits against the outer wall of the roller 8. The anchoring plate 5 is mounted on the top of the two side plates 3 and then screwed in the forward direction... The moving threaded rod 9 drives the wedge block 10 to move downwards, using the wedge block 10 to press the roller 8 at the top of the top plate 7, causing the bottom end of the top plate 7 to move towards the side plate 3. The top plate 7 clamps the side plate 3, fixing the rebar plate 5 to the top of the side plate 3. Rebars are inserted into the rectangular frame through the rebar holes 6 at the top of the rebar plate 5, which can restrict the position of the rebars and prevent the rebars from shifting and affecting the strength of the precast slab. The threaded rod 9 is turned in the opposite direction to drive the wedge block 10 to move upwards, separating the wedge block 10 from the roller 8. The top plate 7 also loosens the side plate 3. At this time, the rebar plate 5 can be removed from the top of the side plate 3.
[0021] The movable steel template 4 is symmetrically fixedly connected to two sides with positioning blocks 12. A locking mechanism is provided between the side plate 3 and the positioning blocks 12. The locking mechanism includes insertion holes 11 and insertion rods 13. Insertion holes 11 are fixedly connected to the top and bottom of the side plate 3. Insertion rods 13 are inserted into the insertion holes 11. The bottom end of the insertion rods 13 passes through the interior of the positioning blocks 12. One side of the side plate 3 is provided with a slot that matches the positioning blocks 12. After the side plate 3 is attached to the movable steel template 4, the insertion rods 13 are inserted from top to bottom into the two insertion holes 11 and the interior of the positioning blocks 12 to connect the side plate 3 and the movable steel template 4 into one unit, so that the fixed steel template 2, the side plate 3 and the movable steel template 4 form a rectangular frame structure. After the precast slab solidifies, the insertion rods 13 are pulled out from the insertion holes 11 and the interior of the positioning blocks 12 to release the connection between the side plate 3 and the movable steel template 4. The side plate 3 is rotated to expose the two sides of the precast slab.
[0022] The driving mechanism includes a connecting seat 14, a connecting beam 15, and a hydraulic cylinder 16. The connecting seat 14 is symmetrically fixedly connected to one side of the movable steel template 4. Multiple hydraulic cylinders 16 are fixedly installed on one side of the track frame 1. A connecting beam 15 is fixedly connected between two connecting seats 14. The output end of the hydraulic cylinder 16 is fixedly connected to one side of the connecting beam 15. The bottom of the movable steel template 4 is slidably connected to the top of the track frame 1. The output end of the hydraulic cylinder 16 is connected to the movable steel template 4 as a whole through the connecting seat 14 and the connecting beam 15. The output end of the hydraulic cylinder 16 can drive the movable steel template 4 to move linearly back and forth on the top of the track frame 1, driving the movable steel template 4 to move closer to the fixed steel template 2. The fixed steel template 2, the side plate 3, and the movable steel template 4 form a rectangular frame structure, or drive the movable steel template 4 away from the fixed steel template 2, completely exposing the solidified precast slab, making it convenient for people to move it.
[0023] Both the movable steel template 4 and the fixed steel template 2 are provided with a reinforcing frame 17 on one side. The reinforcing frame 17 is composed of horizontal plates and vertical plates, which are perpendicular to each other and form a cross shape.
[0024] This prefabricated adjustable early-closing formwork system with post-cast strips allows the anchor plate 5 to be erected on top of the two side plates 3. Tightening the threaded rod 9 in the forward direction moves the wedge block 10 downward, using the wedge block 10 to press the roller 8 at the top of the top plate 7, causing the bottom end of the top plate 7 to move towards the side plate 3. The top plate 7 clamps the side plate 3, fixing the anchor plate 5 to the top of the side plate 3. Reinforcing bars are inserted into the rectangular frame through the anchor holes 6 at the top of the anchor plate 5, which can restrict the position of the reinforcing bars and prevent the position of the reinforcing bars from shifting and affecting the strength of the precast slab.
[0025] 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. An adjustable early-closing formwork system for prefabricated post-pouring strips, comprising a track frame (1), fixed steel formwork (2), and side plates (3), characterized in that: A fixed steel template (2) is fixedly connected to one side of the track frame (1), and side plates (3) are symmetrically hinged on both sides of the fixed steel template (2). A movable steel template (4) is provided on the other side of the track frame (1). A drive mechanism matching the movable steel template (4) is provided on one side of the track frame (1), and a rebar installation mechanism is provided between the two side plates (3). The rebar anchoring mechanism includes a rebar anchoring plate (5), rebar anchoring holes (6), a top plate (7), a roller (8), a threaded rod (9), and a wedge block (10). The rebar anchoring plate (5) is mounted on the top of the two side plates (3). The top plate (7) is symmetrically hinged to both sides of the rebar anchoring plate (5). The top of the top plate (7) is hinged to the roller (8). The threaded rod (9) is symmetrically threaded to both sides of the top of the rebar anchoring plate (5). The bottom of the threaded rod (9) is rotatably connected to the wedge block (10).
2. The prefabricated adjustable early-closing formwork system for post-pouring strips according to claim 1, characterized in that: The anchoring plate (5) has symmetrical movable grooves on both sides, the top plate (7) is located inside the movable groove, and the inclined surface at the bottom of the wedge block (10) is in contact with the outer wall of the roller (8).
3. The prefabricated adjustable early-closing formwork system for post-pouring strips according to claim 1, characterized in that: The movable steel template (4) is symmetrically fixedly connected to positioning blocks (12) on both sides, and a locking mechanism is provided between the side plate (3) and the positioning blocks (12).
4. The prefabricated adjustable early-closing formwork system for post-pouring strips according to claim 3, characterized in that: The locking mechanism includes a socket (11) and a rod (13). The top and bottom of the side plate (3) are fixedly connected to the socket (11). The rod (13) is inserted into the socket (11). The bottom end of the rod (13) passes through the interior of the positioning block (12). One side of the side plate (3) is provided with a slot that matches the positioning block (12).
5. The prefabricated adjustable early-closing formwork system for post-pouring strips according to claim 1, characterized in that: The driving mechanism includes a connecting seat (14), a connecting beam (15), and a hydraulic cylinder (16). The connecting seat (14) is symmetrically fixedly connected to one side of the movable steel template (4). Multiple hydraulic cylinders (16) are fixedly installed on one side of the track frame (1). The connecting beam (15) is fixedly connected between two connecting seats (14). The output end of the hydraulic cylinder (16) is fixedly connected to one side of the connecting beam (15). The bottom of the movable steel template (4) is slidably connected to the top of the track frame (1).
6. The prefabricated adjustable early-closing formwork system for post-pouring strips according to claim 1, characterized in that: The movable steel template (4) and the fixed steel template (2) are both provided with a reinforcing frame (17) on one side. The reinforcing frame (17) is composed of horizontal plates and vertical plates. The horizontal plates and vertical plates are perpendicular to each other and form a cross shape.