Quick locking structure between building steel formworks

By introducing an adjustable clamping mechanism into the steel formwork locking device, the locking state of the pin plate can be adjusted by using a knob or threaded sleeve, which solves the cumbersome operation problem of having to hit the pin plate with gravity in the existing technology, and realizes convenient disassembly and assembly and efficient construction.

CN224281990UActive Publication Date: 2026-05-26HEFEI WANZHONG TRAFFIC ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-24
Publication Date
2026-05-26

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Abstract

This utility model discloses a quick-locking structure for steel formwork in construction, relating to the field of steel formwork locking structures. This quick-locking structure includes a pin, which consists of a pin rod and a pin cap. A locking hole is formed in the middle of the lower section of the pin rod, and a pin plate is inserted into the locking hole. One side of the pin plate is inclined. This quick-locking structure for steel formwork uses an adjustable clamping mechanism and a lifting component to directly adjust the axial position of the pressure-bearing component, allowing the inclined surface of the pin plate to dynamically lock into or disengage from the pressure-bearing component. This significantly simplifies the disassembly process of steel formwork locks, making operation convenient and labor-saving, effectively improving construction efficiency, while reducing physical impact on the pin plate and lock structure, and extending service life.
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Description

Technical Field

[0001] This utility model relates to the field of steel formwork locking structures, and in particular to a quick locking structure between building steel formwork. Background Technology

[0002] There is a lock for connecting plate-type steel formwork. During connection, the steel formwork is aligned so that the insertion holes on the connecting edges of two adjacent steel formworks are aligned. The pin is inserted into the insertion hole, and the pin plate is inserted into the insertion hole. The inclined surface of the pin plate abuts against the inner wall of one end of the insertion hole, and the flat surface of the pin plate abuts against the outer wall of one steel formwork. The pin cap of the pin pulls the steel formwork on the other side, thereby achieving the locking effect. However, this lock requires heavy force to strike the pin plate during both installation and disassembly to lock and unlock the lock, which is relatively cumbersome. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a quick locking structure between building steel formwork, which solves the problem that existing pin and pin-plate type steel formwork locks require heavy force to strike the pin plate during assembly and disassembly, making the operation cumbersome.

[0004] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0005] A quick-locking structure for steel formwork in construction includes a pin, which consists of a pin rod and a pin cap. The lower section of the pin rod has a through-hole, and a pin plate is inserted into the hole. One side of the pin plate has an inclined surface. The lower section of the pin rod is provided with an adjustable clamping mechanism. The adjustable clamping mechanism includes a pressure-bearing component that contacts the inclined surface of the pin plate, and a lifting assembly that drives the pressure-bearing component to move up and down. The adjustable clamping mechanism drives the pressure-bearing component to move axially along the pin rod through the lifting assembly, thereby switching between the locked and released states of the pin plate.

[0006] Preferably, the adjustable clamping mechanism includes: a clamping block slidably disposed inside the lock hole; a threaded hole communicating with the lock hole is provided at the lower end of the pin rod located below the lock hole; a screw rod is threadedly connected inside the threaded hole; the upper end of the screw rod extends into the lock hole and is rotatably connected to the clamping block; the lower end of the screw rod extends to the outside of the pin rod and is fixed with a knob; when the pin plate is locked, the inclined surface of the pin plate abuts against the upper edge of the clamping block.

[0007] Preferably, the knob is arranged in a plum blossom shape, which conforms to the ergonomic design and makes it easier to turn the knob. The outer contour dimension of the knob is smaller than the outer contour dimension of the bottom surface of the pin. The clamping block does not protrude from the lock hole, all of which ensure that the pin can be smoothly inserted into the insertion hole on the steel template.

[0008] Preferably, the pin includes a thick rod and a thin rod coaxially connected, the diameter of the thick rod is larger than the diameter of the thin rod, the upper and lower parts of the locking hole are located in the thick rod and the thin rod respectively, and the adjustable clamping mechanism includes an external thread on the outer wall of the thin rod, and a threaded sleeve connected to the outside of the thin rod by the external thread. When the pin plate is locked, the inclined surface of the pin plate abuts against the upper edge of the threaded sleeve.

[0009] Preferably, the outer diameter of the threaded sleeve is not greater than the diameter of the thick rod. This design ensures that the pin can be inserted into the insertion hole on the steel template. The outer wall of the threaded sleeve is formed with anti-slip ridges at equal angular intervals. The anti-slip ridges also increase the friction and facilitate the rotation of the threaded sleeve.

[0010] Compared with the prior art, the advantages of this utility model are as follows:

[0011] This invention utilizes an adjustable clamping mechanism (such as a screw-driven clamping block or threaded sleeve structure) to directly adjust the axial position of the pressure-bearing component (clamping block or threaded sleeve) using a lifting assembly, allowing the inclined surface of the pin plate to dynamically lock into or disengage from the pressure-bearing component. During assembly and disassembly, simply rotating the knob or threaded sleeve releases or applies the locking force to the pin plate, completely replacing the traditional method of forcefully striking the pin plate. This significantly simplifies the disassembly process of steel formwork locks, making operation convenient and labor-saving, effectively improving construction efficiency, and reducing physical impact on the pin plate and lock structure, thus extending their service life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0013] Figure 2 This is a schematic diagram of the inner structure of the lock hole of this utility model.

[0014] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0015] Figure 4 This is a schematic diagram of the external thread structure of this utility model.

[0016] Reference numerals: 1. Pin; 101. Pin rod; 1011. Thick rod; 1012. Thin rod; 102. Pin cap; 2. Locking hole; 3. Pin plate; 4. Clamping block; 5. Threaded hole; 6. Screw; 7. Knob; 8. External thread; 9. Threaded sleeve; 10. Anti-slip ridge. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example 1, please refer to Figure 1 and Figure 2 This embodiment provides a quick locking structure between building steel formwork, including a pin 1. The pin 1 consists of a pin rod 101 and a pin cap 102. A locking hole 2 is provided in the middle of the lower section of the pin rod 101. A pin plate 3 is inserted into the locking hole 2. One side of the pin plate 3 is inclined. When locking two adjacent steel formwork, the pin rod 101 of the pin 1 is inserted into the corresponding locking hole on the two steel formworks until the pin cap 102 abuts against the outside of one of the steel formworks. Then the pin plate 3 is inserted from the lower section of the locking hole 2, ensuring that the flat surface of the pin plate 3 is in contact with the outer wall of the steel formwork, while the inclined surface of the pin plate 3 faces downward.

[0019] A retaining block 4 is slidably inserted into the inner side of the lock hole 2. The retaining block 4 does not protrude from the lock hole 2. A threaded hole 5 is provided at the center of the lower end of the pin 101. The threaded hole 5 is located below the lock hole 2 and is connected to the lock hole 2. A screw 6 is threaded into the threaded hole 5. The upper end of the screw 6 extends into the lock hole 2 and is rotatably connected to the retaining block 4. The lower end of the screw 6 extends to the outside of the pin 101 and is fixed with a knob 7. The knob 7 is arranged in a quincunx shape, and the outer contour dimension of the knob 7 is smaller than the outer contour dimension of the bottom surface of the pin 101. After the pin plate 3 is inserted into the lock hole 2 and the inclined surface of the pin plate 3 abuts against the retaining block 4, By striking the pin plate 3, the pin plate 3 is gradually inserted into the lock hole 2. The flat surface of the top of the pin plate 3 presses against the outer wall of the steel template, while the inclined surface of the bottom of the pin plate 3 presses against the outer wall of the pressure block 4, which serves as a pressure-bearing component. This tightens the pin cap 102, thus locking the two steel templates. When removing the pin plate 3, the screw 6 is rotated by turning the knob 7, which causes the pressure block 4 to slide down the inner wall of the lock hole 2. This causes the pin plate 3 to lose its locking force, switching it from the locked state to the released state. The pin plate 3 can then be easily removed without having to forcefully strike it in the opposite direction, making the operation more convenient.

[0020] Example 2, please refer to Figure 3 and Figure 4 This embodiment provides a quick locking structure between building steel formwork, including a pin 1. The pin 1 is composed of a pin rod 101 and a pin cap 102. A locking hole 2 is provided at the middle position of the lower end of the pin rod 101. A pin plate 3 is inserted into the locking hole 2. One side of the pin plate 3 is set with an inclined surface.

[0021] The pin 101 includes a thick rod 1011 and a thin rod 1012 connected together. The diameter of the thick rod 1011 is larger than the diameter of the thin rod 1012. The upper part of the locking hole 2 is located on the thick rod 1011, and the lower part of the locking hole 2 is located on the thin rod 1012. The outer wall of the thin rod 1012 is formed with an external thread 8. A threaded sleeve 9 is threadedly connected to the outer side of the thin rod 1012 through the external thread 8. The outer diameter of the threaded sleeve 9 is designed to be equal to or smaller than the diameter of the thick rod 1011. The outer wall of the threaded sleeve 9 is formed with anti-slip ridges 10 at equal angular intervals. After the pin plate 3 is inserted into the insertion hole of the steel template, the pin plate 3 is inserted into the locking hole 2. The inclined surface at the bottom of the pin plate 3 presses against the edge of the threaded sleeve 9 of the seat pressure component. By striking the pin plate 3, the pin plate 3 pulls the pin rod 101, so that the pin plate 3 cooperates with the pin cap 102 to lock the two adjacent steel templates. When disassembling the template, by rotating the threaded sleeve 9, the threaded sleeve 9 moves down, so that the pin plate 3 switches from the locked state to the released state. Then the pin plate 3 can be easily removed. In this way, there is no need to strike the pin plate 3 in the opposite direction to disassemble the pin plate 3, making the operation more convenient and the disassembly and assembly more convenient.

[0022] 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 quick-locking structure between steel formwork panels for construction, comprising a pin (1), the pin (1) being composed of a pin rod (101) and a pin cap (102), characterized in that, The lower section of the pin (101) is provided with a through lock hole (2), and a pin plate (3) is inserted into the lock hole (2). One side of the pin plate (3) is formed with an inclined surface. The lower section of the pin (101) is provided with an adjustable clamping mechanism. The adjustable clamping mechanism includes a pressure-bearing component that contacts the inclined surface of the pin plate (3), and a lifting component that drives the pressure-bearing component to move up and down. The adjustable clamping mechanism drives the pressure-bearing component to move axially along the pin (101) through the lifting component, thereby switching the pin plate (3) between the locked state and the released state. The pin (101) includes a thick rod (1011) and a thin rod (1012) coaxially connected. The diameter of the thick rod (1011) is larger than that of the thin rod (1012). The upper and lower parts of the locking hole (2) are located in the thick rod (1011) and the thin rod (1012) respectively. The adjustable clamping mechanism includes an external thread (8) on the outer wall of the thin rod (1012) and a threaded sleeve (9) threadedly connected to the outside of the thin rod (1012) through the external thread (8). When the pin plate (3) is locked, the inclined surface of the pin plate (3) abuts against the upper edge of the threaded sleeve (9).

2. The quick-locking structure between steel formwork panels according to claim 1, characterized in that, The adjustable clamping mechanism includes: a clamping block (4) slidably disposed inside the lock hole (2); a threaded hole (5) communicating with the lock hole (2) is provided at the lower end of the pin (101) located below the lock hole (2); a screw (6) is threadedly connected to the threaded hole (5); the upper end of the screw (6) extends into the lock hole (2) and is rotatably connected to the clamping block (4); the lower end of the screw (6) extends to the outside of the pin (101) and is fixed with a knob (7); when the pin plate (3) is locked, the inclined surface of the pin plate (3) abuts against the upper edge of the clamping block (4).

3. The quick-locking structure between building steel formwork according to claim 2, characterized in that, The knob (7) is arranged in a plum blossom shape.

4. The quick-locking structure between steel formwork panels according to claim 2, characterized in that, The outer contour dimension of the knob (7) is smaller than the outer contour dimension of the bottom surface of the pin (101).

5. The quick-locking structure between building steel formwork according to claim 4, characterized in that, The clamping block (4) does not protrude from the lock hole (2).

6. The quick-locking structure between steel formwork panels according to claim 1, characterized in that, The outer diameter of the threaded sleeve (9) is not greater than the diameter of the thick rod (1011).

7. The quick-locking structure between building steel formwork according to claim 6, characterized in that, The outer wall of the threaded sleeve (9) is formed with anti-slip ridges (10) at equal angular intervals.