Road and bridge steel formwork demolding device

Abstract

The utility model discloses a road and bridge steel formwork demolding device, and belongs to the field of road and bridge engineering equipment. A road and bridge steel formwork demolding device comprises a fixed rod, a bottom plate is hinged to one end of the fixed rod, a movable rod is slidably connected into the fixed rod, a demolding clamping plate is hinged to one end of the movable rod, a gear A and a gear B which are meshed with each other are rotationally connected to the fixed rod, a driving rod is inserted into the gear A in a matched mode, and racks are fixedly connected to the two sides of the movable rod. The gear B is meshed with the rack. The lever principle that the driving rod drives the gear A to rotate and the gear A drives the gear B to rotate is adopted, so that when the driving rod rotates, the gear A drives the movable rod to slide into the fixed rod, the demolding clamping plate drives the steel formwork to be separated from the concrete member, operation is easy and convenient, and time and labor are saved.

Description

Technical Field

[0001] The present application relates to the field of road and bridge engineering equipment, and more specifically, to a road and bridge steel formwork demoulding device. Background Art

[0002] Steel formwork is a steel formwork used for concrete casting and molding. It is widely used in road and bridge construction projects because it can be used multiple times and the concrete casting and molding are beautiful. When the road and bridge concrete components are formed, the steel formwork needs to be removed. At present, it is mainly done manually by inserting a crowbar into the gap between the component and the steel formwork to pry and separate the steel formwork from the component. This not only has the problem of limited operating space, but also easily causes damage to the component. The prior art patent document with publication number CN216831530U provides a prefabricated steel formwork auxiliary disassembly device. The device achieves the pulling of the prefabricated steel formwork by utilizing the impact force of the impact slider on the limit block during the disassembly process, thereby facilitating the smooth disassembly of the prefabricated steel formwork by the staff according to the specific degree of disassembly.

[0003] In view of the above-mentioned related technologies, the inventor believes that in order to drive the steel formwork to be detached by the gravity of the impact slider, the impact slider itself needs to reach a suitable weight, which is time-consuming and labor-intensive and inconvenient to use. Therefore, we propose a road and bridge steel formwork demoulding device. Utility Model Content

[0004] In order to improve the problems raised in the above background technology, the present application provides a road and bridge steel formwork demoulding device, which adopts the following technical solution:

[0005] A demoulding device for a road and bridge steel formwork comprises a fixed rod, one end of which is hinged with a base plate, a movable rod is slidably connected inside the fixed rod, one end of the movable rod is hinged with a demoulding clamping plate, the fixed rod is rotatably connected to two mutually meshing gears A and gear B, the gear A is plugged with a driving rod, racks are fixedly connected on both sides of the movable rod, the gear B is meshed with the rack, and a ratchet is coaxially fixedly connected to the gear B, a brake block is abutted on one side of the ratchet, and the brake block is used to limit the one-way rotation of the gear B.

[0006] By adopting the above technical solution, the bottom plate is in contact with the ground, and after the demoulding clamping plate is clamped with the steel formwork, the driving rod drives gear A to rotate through the lever principle, gear A drives gear B to rotate, and gear B drives the movable rod connected to the rack to slide into the fixed rod, thereby driving the steel formwork to detach from the concrete component.

[0007] Optionally, the diameter of gear A is smaller than the diameter of gear B.

[0008] By adopting the above technical solution, gear A cooperates with gear B and utilizes the lever principle to realize that gear A drives gear B to rotate with less effort.

[0009] Optionally, a cross rod is coaxially fixedly connected to the gear A, and the driving rod is plug-fitted with the cross rod.

[0010] By adopting the above technical solution, after the driving rod is plugged into one end of the cross rod, the driving rod can be pulled clockwise to drive the gear A to rotate with less effort, and the double lever principle can be used to drive the movable rod to slide into the fixed rod.

[0011] Optionally, a fixing plate is fixedly connected to the fixing rod, the brake block is elastically connected to the fixing plate via a spring, and a pull rod is fixedly connected to the brake block.

[0012] By adopting the above technical solution, the spring drives the brake block to abut against the ratchet, so that the ratchet can only rotate in one direction, preventing the movable rod from sliding outward from the fixed rod. When the pull rod is pulled to cancel the abutment between the brake plate and the ratchet, gear B can rotate freely.

[0013] Optionally, a sliding sleeve is provided on the movable rod, a screw rod on the sliding sleeve is connected with a positioning bolt, and one end of the positioning bolt is in abutment with the movable rod.

[0014] By adopting the above technical solution, after the positioning screw is tightly abutted against the movable rod, a certain distance is set between the sliding sleeve and the fixed rod. When the steel formwork is separated from the concrete component and falls, the abutment between the sliding sleeve and the fixed rod can prevent the steel formwork from injuring the staff.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. The driving rod drives gear A to rotate and gear A drives gear B to rotate, both of which are lever principles. When the driving rod rotates, gear A drives the movable rod to slide into the fixed rod, so that the demolding card drives the steel formwork to separate from the concrete component. The operation is simple, saving time and effort.

[0017] 2. The sliding distance of the movable rod is limited by the sliding sleeve, so that the sliding sleeve and the fixed rod can be abutted and matched to prevent the steel formwork from tipping over and injuring the workers, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a road and bridge steel formwork demoulding device according to an embodiment of the present application;

[0019] Figure 2 This is a schematic diagram of the anatomical structure of a fixed rod of a road and bridge steel formwork demoulding device according to an embodiment of the present application;

[0020] Figure 3This is an enlarged schematic diagram of the structure at position A in a road and bridge steel formwork demoulding device according to an embodiment of the present application;

[0021] Figure 4 This is a schematic diagram of the structure of a movable rod and a sliding sleeve of a road and bridge steel formwork demoulding device according to an embodiment of the present application;

[0022] Explanation of the numbers in the figure: 1. Fixed rod; 2. Bottom plate; 3. Movable rod; 4. De-mold clamping plate; 5. Gear A; 6. Gear B; 7. Cross rod; 8. Driving rod; 9. Rack; 10. Positioning bolt; 11. Ratchet; 12. Brake block; 13. Fixed plate; 14. Spring; 15. Pull rod; 16. Sliding sleeve. DETAILED DESCRIPTION

[0023] The present application is further described in detail below in conjunction with the accompanying drawings.

[0024] Reference Figure 1-4 The present application includes a fixed rod 1, one end of which is hinged with a base plate 2, a movable rod 3 is slidably connected inside the fixed rod 1, one end of the movable rod 3 is hinged with a demoulding clamping plate 4, the fixed rod 1 is rotatably connected with two mutually meshing gears A5 and gear B6, the gear A5 is plugged with a driving rod 8, both sides of the movable rod 3 are fixedly connected with racks 9, the gear B6 is meshed with the rack 9, and the gear B6 is coaxially fixedly connected with a ratchet 11, one side of the ratchet 11 is abutted with a brake block 12, the brake block 12 is used to limit the unidirectional rotation of the gear B6, the base plate 2 abuts with the ground, after the demoulding clamping plate 4 is clamped with the steel formwork, the driving rod 8 drives the gear A5 to rotate through the lever principle, the gear A5 drives the gear B6 to rotate, the gear B6 drives the movable rod 3 connected to the rack 9 to slide into the fixed rod 1, thereby driving the steel formwork to separate from the concrete component.

[0025] The bottom of the bottom plate 2 is provided with anti-skid grooves to increase the friction between the bottom plate 2 and the ground and prevent the bottom plate 2 from sliding.

[0026] Reference Figure 2 The diameter of gear A5 is smaller than that of gear B6. Gear A5 and gear B6 cooperate with each other by utilizing the lever principle to realize that gear A5 can drive gear B6 to rotate with less effort.

[0027] Reference Figure 2 A cross rod 7 is coaxially fixedly connected to the gear A5, and the driving rod 8 is plugged into the cross rod 7. After the driving rod 8 is plugged into one end of the cross rod 7, the driving rod 8 can be turned clockwise to save effort to drive the gear A5 to rotate. The double lever principle can be used to drive the movable rod 3 to slide into the fixed rod 1.

[0028] Reference Figure 3A fixed plate 13 is fixedly connected to the fixed rod 1, and a brake block 12 is elastically connected to the fixed plate 13 through a spring 14, and a pull rod 15 is fixedly connected to the brake block 12. The spring 14 drives the brake block 12 to abut against the ratchet 11, so that the ratchet 11 can only rotate in one direction to prevent the movable rod 3 from sliding outward from the fixed rod 1. When the pull rod 15 is pulled to cancel the abutment between the brake plate 12 and the ratchet 11, the gear B6 can rotate freely.

[0029] Reference Figure 4 A sliding sleeve 16 is sleeved on the movable rod 3, and a positioning bolt 10 is connected to the screw on the sliding sleeve 16. One end of the positioning bolt 10 is in abutment with the movable rod 3, and an anti-slip groove is provided on one side of the movable rod 3. After the positioning screw 17 is tightly in abutment with the movable rod 3, a certain distance is set between the sliding sleeve 16 and the fixed rod 3. When the steel formwork detaches from the concrete component and falls, the abutment between the sliding sleeve 16 and the fixed rod 1 can prevent the steel formwork from injuring the staff.

[0030] The implementation principle of a road and bridge steel formwork demolding device in an embodiment of the present application is: the fixed rod 1 is placed at an angle, and the bottom plate 2 is abutted against the ground, and the demolding clamping plate 4 is clamped with the steel formwork, the driving rod 8 rotates clockwise to drive the gear A5 to rotate, and the gear A5 cooperates with the gear B6 to drive the rack 9 to slide, and the rack 9 drives the movable rod 3 to slide into the fixed rod 1. At the same time, the spring 14 drives the brake plate 12 to abut against the ratchet 11 to prevent the gear B6 from rotating in the opposite direction. The movable rod 3 moves to drive the steel formwork to break away from the connection with the concrete component, thereby realizing the demolding operation of the steel formwork.

Claims

1. A road and bridge steel formwork demoulding device, characterized in that: The invention comprises a fixed rod (1), one end of which is hingedly connected to a bottom plate (2), a movable rod (3) is slidably connected inside the fixed rod (1), one end of which is hingedly connected to a mold-removing clamping plate (4), two mutually meshing gears A (5) and a gear B (6) are rotatably connected to the fixed rod (1), a driving rod (8) is plugged into the gear A (5), racks (9) are fixedly connected to both sides of the movable rod (3), the gear B (6) is meshed with the rack (9), and a ratchet (11) is coaxially fixedly connected to the gear B (6), one side of the ratchet (11) is abutted with a brake block (12), and the brake block (12) is used to limit the one-way rotation of the gear B (6).

2. A road bridge steel formwork demoulding device according to claim 1, characterized in that: The diameter of gear A (5) is smaller than the diameter of gear B (6).

3. A road bridge steel formwork demoulding device according to claim 1, characterized in that: A cross rod (7) is coaxially fixedly connected to the gear A (5), and the driving rod (8) is plug-fitted with the cross rod (7).

4. A road bridge steel formwork demoulding device according to claim 1, characterized in that: A fixing plate (13) is fixedly connected to the fixing rod (1), the brake block (12) is elastically connected to the fixing plate (13) via a spring (14), and a pull rod (15) is fixedly connected to the brake block (12).

5. A road bridge steel formwork demoulding device according to claim 1, characterized in that: The movable rod (3) is sleeved with a sliding sleeve (16), a screw rod on the sliding sleeve (16) is connected with a positioning bolt (10), and one end of the positioning bolt (10) is in abutment with the movable rod (3).

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