Bridge engineering form dismantling construction safety device and method

Abstract

The application discloses a bridge engineering formwork dismantling construction safety device and method, and relates to the technical field of bridge engineering formwork safety dismantling. The device comprises remote control locks, the number of which is multiple, which are used for fixedly connecting each adjacent formwork below the formwork to be dismantled when the formwork is dismantled. The device further comprises a safety unit arranged on one side of the bridge engineering formwork. The safety unit comprises a plurality of chain hoists and a plurality of steel wires. The fixed lifting hooks of the chain hoists are arranged on the lug plates of the formwork to be dismantled. The lifting hooks of the chain hoists are arranged on the lug plates of the formwork at the lower end of the formwork to be dismantled. The steel wires are arranged through the mounting holes of the top plate and the bottom plate of the formwork to be dismantled and the mounting holes of the top plate of the formwork at the lower end of the formwork to be dismantled. The method comprises the steps of assembling the remote control locks, threading the steel wires, installing the chain hoists, opening the remote control locks and dismantling the formwork. The application can add multiple safety protection measures during construction and reduce the safety hazards during the dismantling of the bridge engineering formwork.

Description

Technical Field

[0001] This invention relates to the field of safe dismantling technology for bridge engineering formwork, and in particular to a safety insurance device and method for dismantling bridge engineering formwork. Background Technology

[0002] In bridge construction, bridge engineering formwork is frequently used. When using it, the formwork is typically assembled vertically, as shown in the attached diagram. Figure 6 As shown, the common template 41 has an opening on one side. The top and bottom plates of the template 41 are respectively provided with multiple mounting holes 42. When connecting each template 41, the templates 41 can be fixed together by inserting screws 43 into the mounting holes 42 and installing nuts. The side of the template 41 is also provided with multiple ear plates 44, which facilitates the lifting of the vehicle crane and the hanging of other equipment.

[0003] After the bridge construction is completed, the bridge formwork needs to be removed. During the removal, after the screw rod 43 is disassembled, multiple formworks 41 are stacked vertically without being fixed. Since the formworks 41 are heavy, they are more likely to fall to the same side or the back side of the extension direction of the ear plate 44, which poses a great safety hazard. Summary of the Invention

[0004] To address the aforementioned deficiencies, this invention provides a safety insurance device and method for the removal of formwork in bridge engineering, which can add multiple safety protection measures during construction to reduce safety hazards during the removal of formwork in bridge engineering.

[0005] In order to achieve the objectives of this invention, the following technologies are proposed: A safety device for bridge formwork removal construction includes: Multiple remote control locks are used to securely connect adjacent templates located below the template to be removed during template dismantling; The safety unit, located on one side of the bridge engineering formwork, includes several hand-operated hoists and several wire ropes. The fixed hook of the hand-operated hoist is inserted through the ear plate of the formwork to be demolished, and the lifting hook of the hand-operated hoist is inserted through the ear plate of the lower end of the formwork to be demolished. The wire rope passes through the mounting holes of the top plate and the bottom plate of the formwork to be demolished, and also passes through the mounting hole of the top plate of the lower end of the formwork to be demolished.

[0006] Furthermore, the remote control lock includes a U-shaped part, with a fixing block at the lower end of one parallel side of the U-shaped part. The fixing block has openings on one side and the lower end face that are interconnected. The fixing block also has coaxial rotating holes on both ends. A first rotary motor is provided at one end of the fixing block, and its output shaft is rotatably engaged with the two rotating holes. A locking plate is provided on the outer periphery of the output shaft of the first rotary motor. The locking plate is rotatably engaged with the opening of the fixing block. A protrusion is provided at one end of the locking plate, and a slot matching the other parallel side of the U-shaped part is provided at the upper end of the protrusion.

[0007] Furthermore, the safety unit also includes several vertically arranged second rotary motors, with a turntable sleeved on the outer periphery of the upper end of the output shaft, and the lifting chain of the hand chain hoist is tensioned on the outer periphery of the turntable.

[0008] Furthermore, the upper end of the second rotary motor is provided with a pair of limiting plates, which are connected by several vertical rods. The upper limiting plate is detachable, and the output shaft of the second rotary motor passes through the lower limiting plate. The turntable is located between the two limiting plates.

[0009] Furthermore, the wire rope is equipped with rope loops at both the upper and lower ends, and the lower rope loop is connected to the bottom hook of the ear plate of the template that is inserted into the lower end of the template to be dismantled.

[0010] Furthermore, it also includes an auxiliary operation unit located on one side of the bridge engineering formwork. The auxiliary operation unit includes a vehicle body with multiple rollers at its lower end, a first linear mechanism vertically mounted on the upper end of the vehicle body, a third rotary motor vertically mounted on its sliding end, a second linear mechanism mounted on the upper end of the output shaft of the third rotary motor, and an air clamp mounted on one end of the output shaft of the second linear mechanism.

[0011] Furthermore, a storage slot is provided on the upper surface of the vehicle body for storing the removed remote control lock.

[0012] A method for safe removal of formwork in bridge engineering, employing a safety insurance device for formwork removal, includes the following steps: S100: The operator removes the screws that fix the adjacent templates in the order of top to bottom or bottom to top. After each row of screws is removed, a remote control lock is installed in several mounting holes of the two adjacent templates and the remote control lock is locked. S200: Remove all templates except the bottom one from top to bottom. Perform the following steps S300 to S700 for the removal of each template. S300: The operator inserts each wire rope into the mounting hole of the top plate of the uppermost template and the matching mounting hole of the bottom plate, and then through the mounting hole of the second template from the top. The bottom end of the wire rope is fixed to the ear plate of the second template from the top and the wire rope is tightened. S400: The operator hangs the fixed hook of each hand chain hoist on the ear plate of the uppermost template, and hangs the lifting hook of the hand chain hoist on the ear plate of the template at the lower end of the second template from the top, and tightens the chain between the hand chain hoist body and the lifting hook. S500: Open the remote lock between the two topmost templates and remove the remote lock; S600: The topmost formwork is lifted by the hook of the engineering vehicle. At the same time, the wire rope is released so that the two topmost formworks can be separated from each other. When the formwork is lifted, the hand chain hoist is released through the lifting chain, and the chain between the hand chain hoist body and the lifting hook is loosened. S700: The engineering vehicle removes and places the formwork, and then removes each hand chain hoist and each wire rope; S800: Remove the bottommost template.

[0013] The beneficial effects of this technical solution are as follows: Safety was improved during the formwork removal process in bridge engineering in the following ways: 1. When dismantling the bolts used to fix the formwork, remote control locks were used instead to prevent the formwork from falling prematurely during the preparation for removal; 2. After the remote control lock was opened and the top formwork was unsecured, a steel wire rope was passed through the top formwork and then fixed to the lower, still-fixed formwork, allowing the formwork to be removed to move while providing a certain level of safety protection; 3. The two top formwork sections were connected by a hand-operated hoist. When the formwork was lifted, the hoist hook remained relatively stationary, while the movement of the hoist body provided a buffer as the hoist chain rose, preventing the formwork from moving too quickly and improving the stability during removal. Attached Figure Description

[0014] Figure 1 An overall perspective view of an embodiment of this application is shown.

[0015] Figure 2 An embodiment of this application is shown. Figure 1 Enlarged view of part A.

[0016] Figure 3 An embodiment of this application is shown. Figure 1 Enlarged view of part B.

[0017] Figure 4 An embodiment of this application is shown. Figure 1 Enlarged view of part C.

[0018] Figure 5 A perspective view of a remote control lock according to an embodiment of this application is shown.

[0019] Figure 6 A schematic diagram of a bridge engineering template is shown in the background section of this application. Detailed Implementation

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-5The safety device for bridge formwork removal construction shown includes a remote control lock 1, a safety unit, and an auxiliary operation unit 3, used for... Figure 6 The bridge engineering formwork shown is dismantled sequentially, specifically, each formwork 41 is dismantled from top to bottom.

[0022] Multiple remote control locks 1 are used to fix adjacent templates 41 located below the template 41 being dismantled during template removal. The remote control lock 1 includes a U-shaped part 11. A fixing block 12 is provided at the lower end of one parallel side of the U-shaped part 11. An opening is provided on one side and the lower end of the fixing block 12 and they are interconnected. Coaxial rotating holes are also provided on both ends of the fixing block 12. A C-shaped frame 13 is provided on the other side of the fixing block 12. A first rotary motor 14 is provided on one side of one end of the C-shaped frame 13. Its output shaft is rotatably engaged with the two rotating holes. A locking plate 15 is provided on the outer periphery of the output shaft of the first rotary motor 14. The locking plate 15 is rotatably engaged with the opening of the fixing block 12. A protrusion is provided at one end of the locking plate 15. A slot matching the other parallel side of the U-shaped part 11 is provided at the upper end of the protrusion.

[0023] The safety unit is located on one side of the bridge engineering formwork and includes a pair of chain hoists 21 and a pair of wire ropes 27. The fixed hook 22 of the chain hoist 21 passes through the ear plate 44 of the formwork 41 being dismantled, and the lifting hook 23 of the chain hoist 21 passes through the ear plate 44 of the lower end of the formwork 41 being dismantled. Preferably, the safety unit also includes a support on the ground, on which a pair of second rotary motors 25 are vertically mounted. A pair of limiting plates 26 are provided at the upper end of the second rotary motors 25. The limiting plates 26 are connected by several vertical rods, and the upper limiting plate 26 can be detached from the vertical rods. The output shaft of the second rotary motor 25 passes through... A turntable is fitted on the outer periphery of the upper end of the output shaft through the lower limiting plate 26. The turntable is located between the two limiting plates 26. The lifting chain 24 of the hand chain hoist 21 is tensioned on the outer periphery of the turntable, so that the hand chain hoist 21 can be operated without the need for the operator to manually pull the lifting chain 24. The wire rope 27 passes through the mounting holes 42 of the top plate and the bottom plate of the template 41 being dismantled, and passes through the mounting hole 42 of the top plate of the template 41 at the lower end of the template 41 being dismantled. The wire rope 27 has rope loops at both the upper and lower ends. The lower rope loop is connected to the bottom hook 28 of the ear plate 44 of the template 41 at the lower end of the template 41 to be dismantled.

[0024] The auxiliary operation unit 3 is located on one side of the bridge engineering template and includes a vehicle body 31. Multiple rollers 32 are provided at the lower end of the vehicle body 31. A storage slot 33 is provided on the upper surface of the vehicle body 31 for storing the disassembled remote control lock 1. A first linear mechanism 34 is also vertically provided on the upper end of the vehicle body 31. A third rotary motor 35 is vertically provided on the sliding end of the first linear mechanism 34. A horizontal plate is provided on the upper end of the output shaft of the third rotary motor 35. A second linear mechanism 36 is provided on the horizontal plate. An air clamp 37 is provided at one end of the output shaft of the second linear mechanism 36. Preferably, human body sensors are provided on the side of the vehicle body 31 near the bridge engineering template and on both ends to prevent personnel from approaching from below and causing danger.

[0025] In this embodiment, the first linear mechanism 34 is a rodless linear cylinder, and the second linear mechanism 36 is a single-axis linear cylinder.

[0026] The safe dismantling method for bridge formwork using the safety insurance device described in the above embodiments is operated according to the following steps: S100: The operator removes each screw 43 that fixes the adjacent template 41 in the order from top to bottom or from bottom to top. After each row of screws 43 is removed, a remote control lock 1 is installed in several mounting holes 42 of the two adjacent templates 41 and the remote control lock 1 is locked. Specifically, the connecting screw between the bottom template 41 and the bridge engineering template installation base can be left unremoved first. S200: Remove all templates 41 except the bottommost template 41 from top to bottom. Perform the following steps S300 to S700 for the removal of each template 41. S300: The operator inserts each wire rope 27 into the mounting hole 42 of the top plate of the uppermost template 41 and the matching mounting hole 42 of the bottom plate, and then through the mounting hole 42 of the top plate of the second template 41 from the top. The bottom hook 28 is then hung on the ear plate 44 of the second template 41 from the top, and the wire rope 27 is tightened. Specifically, the wire rope 27 can be manually tightened by the operator at both ends of the template 41, or it can be tightened by passing the hook of the engineering vehicle through the rope loop at the upper end of the wire rope 27 and pulling it upward. S400: The operator hangs the fixed hooks 22 of each hand chain hoist 21 on the ear plate 44 of the uppermost template 41, and hangs the lifting hooks 23 of the hand chain hoist 21 on the ear plate 44 of the template 41 at the lower end of the second template 41 from the top, and tightens the chain between the main body of the hand chain hoist 21 and the lifting hooks 23. Preferably, if the second rotary motor 25 is used, the limit plate 26 is opened, the lifting chain 24 of the hand chain hoist 21 is tensioned on the outer periphery of the turntable, and then the limit plate 26 is covered. S500: Open the remote lock 1 between the two topmost templates 41. Specifically, open it by rotating the locking plate 15 through the first rotary motor 14, and then remove the remote lock 1. Preferably, if the auxiliary operation unit 3 is used, first move the vehicle body 31 to the predetermined position, then raise and lower the third rotary motor 35 through the first linear mechanism 34, rotate the second linear mechanism 36 through the third rotary motor 35, push and pull the air clamp 37 through the second linear mechanism 36, clamp the remote lock 1 through the air clamp 37, then lift the remote lock 1 through the first linear mechanism 34, retract the remote lock 1 through the second linear mechanism 36, lower the remote lock 1 to the bottom through the first linear mechanism 34, and then release the remote lock 1 through the air clamp 37 so that it falls into the storage slot 33. S600: The uppermost template 41 is lifted by the hook of the engineering vehicle. At the same time, the wire rope 27 is released so that the two uppermost templates 41 can be separated from each other. When the template 41 is lifted, the hand chain hoist 21 is released through the lifting chain 24, and the chain between the main body of the hand chain hoist 21 and the lifting hook 23 is loosened. Preferably, if a second rotary motor 25 is used, the lifting chain 24 is operated through the second rotary motor 25. S700: The engineering vehicle removes the formwork 41 and places it on the ground in the work area, and then removes each hand chain hoist 21 and each wire rope 27. S800: Remove the connecting bolts between the bottom template 41 and the bridge engineering template installation base, and then remove the bottom template 41.

[0027] The above steps can be further improved in terms of work efficiency and safety through the automated operation of auxiliary operation unit 3.

[0028] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A safety device for dismantling bridge formwork, wherein one side of the formwork (41) is open, and the top and bottom plates of the formwork (41) are respectively provided with multiple mounting holes (42). When connecting the formwork (41), the formwork (41) can be fixed together by inserting screws (43) into the mounting holes (42) and installing nuts. The side of the formwork (41) is also provided with multiple ear plates (44) to facilitate hoisting by a crane and hoisting other equipment. The device is characterized in that... include: Multiple remote control locks (1) are used to fix and connect the adjacent templates (41) located below the template (41) to be removed when the template (41) is being dismantled. The safety unit, located on one side of the bridge engineering formwork, includes several hand-operated hoists (21) and several wire ropes (27). The fixed hook (22) of the hand-operated hoist (21) is inserted into the ear plate (44) of the formwork (41) to be demolished. The lifting hook (23) of the hand-operated hoist (21) is inserted into the ear plate (44) of the formwork (41) at the lower end of the formwork (41) to be demolished. The wire rope (27) passes through the mounting holes (42) on the top plate and the bottom plate of the formwork (41) to be demolished, and passes through the mounting holes (42) on the top plate of the formwork (41) at the lower end of the formwork (41) to be demolished. The safety unit also includes several vertically arranged second rotary motors (25), with a turntable sleeved on the outer periphery of the upper end of the output shaft. The lifting chain (24) of the hand-operated hoist (21) is tensioned on the outer periphery of the turntable.

2. The safety device for bridge engineering formwork removal construction according to claim 1, characterized in that, The remote control lock (1) includes a U-shaped part (11). A fixing block (12) is provided at the lower end of one parallel side of the U-shaped part (11). An opening is provided on one side and the lower end of the fixing block (12) and they are connected to each other. Coaxial rotating holes are also provided on both ends of the fixing block (12). A first rotating motor (14) is provided at one end of the fixing block (12). Its output shaft is rotatably fitted to the two rotating holes. A locking plate (15) is provided on the outer periphery of the output shaft of the first rotating motor (14). The locking plate (15) is rotatably fitted to the opening of the fixing block (12). A protrusion is provided at one end of the locking plate (15). A slot matching the other parallel side of the U-shaped part (11) is provided at the upper end of the protrusion.

3. The safety insurance device for bridge engineering formwork removal construction according to claim 1, characterized in that, The upper end of the second rotary motor (25) is provided with a pair of limiting plates (26). The limiting plates (26) are connected by several vertical rods, and the upper limiting plate (26) is detachable. The output shaft of the second rotary motor (25) passes through the lower limiting plate (26), and the turntable is located between the two limiting plates (26).

4. The safety insurance device for bridge engineering formwork removal construction according to claim 1, characterized in that, The wire rope (27) has rope loops at both the upper and lower ends. The lower rope loop is connected to the bottom hook (28) of the ear plate (44) of the template (41) that is inserted at the lower end of the template (41) to be dismantled.

5. The safety insurance device for bridge engineering formwork removal construction according to claim 1, characterized in that, It also includes an auxiliary operation unit (3) located on one side of the bridge engineering template. The auxiliary operation unit (3) includes a vehicle body (31), with multiple rollers (32) at its lower end. A first linear mechanism (34) is vertically located at the upper end of the vehicle body (31), and a third rotary motor (35) is vertically located at its sliding end. A second linear mechanism (36) is located at the upper end of the output shaft of the third rotary motor (35), and an air clamp (37) is located at one end of the output shaft of the second linear mechanism (36).

6. The safety insurance device for bridge engineering formwork removal construction according to claim 5, characterized in that, The upper surface of the vehicle body (31) is also provided with a storage slot (33) for storing the disassembled remote control lock (1).

7. A method for the safe removal of formwork in bridge engineering, characterized in that, The bridge engineering formwork removal construction safety insurance device according to any one of claims 1 to 6 includes the following steps: S100: The operator removes each screw (43) that fixes the adjacent template (41) in the order from top to bottom or from bottom to top. After each row of screws (43) is removed, a remote control lock (1) is installed in several mounting holes (42) of the two adjacent templates (41) and the remote control lock (1) is locked. S200: Remove all templates (41) except the bottommost template (41) from top to bottom. Perform the following steps S300 to S700 for the removal of each template (41); S300: The operator inserts each wire rope (27) into the mounting hole (42) of the top plate of the uppermost template (41) and the matching mounting hole (42) of the bottom plate, and passes through the mounting hole (42) of the top plate of the second template (41) from the top. The bottom end of the wire rope (27) is fixed to the ear plate (44) of the second template (41) from the top, and the wire rope (27) is tightened. S400: The operator hangs the fixed hook (22) of each hand chain hoist (21) on the ear plate (44) of the uppermost template (41), and hangs the lifting hook (23) of the hand chain hoist (21) on the ear plate (44) of the template (41) at the lower end of the second template (41) from the top, and tightens the chain between the main body of the hand chain hoist (21) and the lifting hook (23); S500: Open the remote lock (1) between the two topmost templates (41) and remove the remote lock (1); S600: The top template (41) is lifted by the hook of the engineering vehicle. At the same time, the wire rope (27) is released so that the two top templates (41) can be separated from each other. When the template (41) is lifted, the hand chain hoist (21) is released by the lifting chain (24) to loosen the chain between the main body of the hand chain hoist (21) and the lifting hook (23). S700: The engineering vehicle removes and places the template (41), and then removes each hand chain hoist (21) and each wire rope (27). S800: Remove the bottommost template (41).

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