Steel arch hoisting device for reinforced concrete arch bridge and use method of steel arch hoisting device

Abstract

The invention discloses a reinforced concrete arch bridge steel arch hoisting device and a using method thereof.The reinforced concrete arch bridge steel arch hoisting device comprises a fixing base, an adjusting motor is installed in the upper end of the fixing base, a gear is arranged on an output shaft of the adjusting motor, a fluted disc is connected to one side of the gear, and a bearing disc is fixed to the fluted disc; a counterweight groove is formed in one side wall of the bearing disc, an electromagnet of an L-shaped structure is arranged on the inner wall of the counterweight groove, multiple sets of counterweight blocks are arranged below the counterweight groove and distributed along the rotating path of the bearing disc, a bearing plate is arranged below the counterweight blocks, and an electric push rod is fixed to the bottom end of the bearing plate. The device has the beneficial effects that the proper balancing weight can be selected according to the weight of hoisted goods, the load weight is reduced on the premise that hoisting safety is guaranteed, the device is prevented from running at high power all the time, the energy consumption of the device is reduced, and the use performance is high.

Description

Technical Field

[0001] The invention relates to the technical field of chemical hoisting devices, and in particular to a steel arch frame hoisting device for a reinforced concrete arch bridge and a use method thereof. Background Art

[0002] Reinforced concrete arch bridges refer to all arch bridges except truss arch bridges, steel frame arch bridges, and tie arch bridges. During the construction of reinforced concrete arch bridges, the steel arch frame of the arch bridge needs to be hoisted by a hoisting device.

[0003] The existing steel arch frame lifting device for reinforced concrete arch bridges uses steel wire ropes to fix the steel arches and then lifts them during use. In order to ensure the safety of the lifting during the lifting process, counterweights need to be set on the opposite sides of the steel arch frames to ensure the stability of the device. However, since the counterweights are fixed, they cannot be adjusted according to the weight of different steel arch frames. Due to the large load weight, the device always runs at high power, which increases the energy consumption of the device and affects the use effect of the device. In addition, during the lifting process, since the steel arch frame is only fixed with steel wire ropes, the steel arch frame may tilt due to unstable center of gravity and needs to be repositioned, which affects the lifting effect and lifting efficiency of the device. Therefore, there is an urgent need for a steel arch frame lifting device for reinforced concrete arch bridges to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a steel arch frame hoisting device for a reinforced concrete arch bridge and a method of using the same in order to solve the above-mentioned problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A steel arch frame lifting device for a reinforced concrete arch bridge comprises a fixed seat, an adjusting motor is installed inside the upper end of the fixed seat, a gear is arranged on the output shaft of the adjusting motor, a toothed disc is connected to one side of the gear, a bearing disc is fixed on the toothed disc, a counterweight groove is opened on one side wall of the bearing disc, an L-shaped electromagnet is arranged on the inner wall of the counterweight groove, a counterweight block is arranged below the counterweight groove, the counterweight blocks have multiple groups and are distributed along the rotation path of the bearing disc, a bearing plate is arranged below the counterweight block, and an electric push rod is fixed to the bottom end of the bearing plate.

[0006] Furthermore, the output shaft of the regulating motor is fixedly connected to the gear, the gear is meshed with the toothed disc, and the bearing disc is fixed to the toothed disc by bolts.

[0007] By adopting the above technical solution, the adjusting motor drives the toothed disc to rotate through the gear, and the toothed disc then drives the bearing disc to rotate to adjust the hoisting position.

[0008] Furthermore, the counterweight slot is formed on the carrying plate, the counterweight slot is a rectangular parallelepiped structure, and the electromagnet is fixed to adjacent two side walls in the counterweight slot by screws.

[0009] By adopting the above technical solution, the combination of the counterweight groove and the counterweight block can ensure the overall balance of the device.

[0010] Furthermore, the electric push rod is installed in the fixing seat by bolts, the output end of the electric push rod is connected to the bearing plate by screws, and the weights of the multiple groups of counterweight blocks are different and are made of iron.

[0011] By adopting the above technical solution, the electric push rod can lift the counterweight block into the counterweight slot through the bearing plate.

[0012] Furthermore, the carrying plate is welded with a U-shaped support, a telescopic arm is rotatably installed in the support, a driving motor is fixed on a side wall of the support, and an output shaft of the driving motor is fixedly connected to the telescopic arm.

[0013] By adopting the above technical solution, the driving motor can adjust the inclination angle of the telescopic arm.

[0014] Furthermore, an auxiliary rod with a telescopic structure is provided between the bottom wall of the telescopic arm and the carrying plate, and the auxiliary rod is hinged to the carrying plate and the telescopic arm.

[0015] By adopting the above technical solution, the auxiliary rod can provide auxiliary support to the telescopic arm, thereby ensuring its stability.

[0016] Furthermore, a winding seat is provided at the movable end of the telescopic arm, a winding drum is rotatably installed in the winding seat, a winding motor is fixed on a side wall of the winding seat, an output shaft of the winding motor is fixedly connected to the winding drum, and a steel wire rope is wound on the winding drum.

[0017] By adopting the above technical solution, the winding motor drives the winding drum to rotate to achieve winding or releasing of the wire rope.

[0018] Furthermore, a U-shaped hanger is fixed at one end of the wire rope, a bidirectional screw is rotatably installed in the hanger, a knob is fixed at one end of the bidirectional screw, and a guide rod is fixed above the bidirectional screw.

[0019] By adopting the above technical solution, the knob can drive the bidirectional screw to rotate, and the guide rod can limit and guide the movement of the screw block.

[0020] Furthermore, two groups of screw blocks are symmetrically sleeved on the bidirectional screw rod and the guide rod, a suspension rod is fixed to the bottom end of the screw block, ear seats are welded at the four corners of the fixing seat, and fixing holes are opened on the ear seats.

[0021] By adopting the above technical solution, during the rotation of the bidirectional screw, the screw block drives the suspension rod to move under the action of the thread and the guide rod, and then the spacing of the suspension rod is adjusted according to the specifications of the steel arch frame. The ear seat facilitates fixing the device on the mobile vehicle body.

[0022] The beneficial effects of the present invention are: 1. In order to solve the problem that the existing steel arch frame hoisting device of reinforced concrete arch bridge fixes the steel arch by steel wire rope during use and then performs hoisting, and in order to ensure the safety of hoisting during the hoisting process, it is necessary to set a counterweight block on the opposite side of the steel arch frame to ensure the stability of the device, and because the counterweight block is fixed, it cannot be adjusted according to the weight of different steel arch frames, and there is a problem that the device always runs at high power due to the large load weight, which increases the energy consumption of the device and affects the use effect of the device. The present invention can select a suitable counterweight block according to the weight of the hoisted cargo, reduce the weight of the load under the premise of ensuring hoisting safety, avoid the device always running at high power, save the energy consumption of the device, and have high use performance; 2. In order to solve the problem that in the existing steel arch frame hoisting device of reinforced concrete arch bridge, the steel arch frame is fixed only by steel wire rope during the hoisting process, which leads to the steel arch frame tilting due to unstable center of gravity and needs to be repositioned, affecting the hoisting effect and hoisting efficiency of the device, the present invention arranges a hanger, a bidirectional screw, a screw block, a guide rod and a hanger. During the hoisting process, the bidirectional screw can be driven to rotate by a knob according to the specifications of the steel arch frame, and then the screw block drives the hanger to move under the action of the thread and the guide rod to adjust the spacing between them, and then it is connected to the steel arch frame through the hanger, which can ensure the stability of the center of gravity of the steel arch frame during the hoisting process, avoid its tilting, ensure smooth hoisting, and improve the hoisting effect and efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of a steel arch frame hoisting device for a reinforced concrete arch bridge according to the present invention; Figure 2 It is a bottom view of a telescopic arm in a steel arch frame hoisting device for a reinforced concrete arch bridge according to the present invention; Figure 3 It is a front view of a hanger in a steel arch frame hoisting device for a reinforced concrete arch bridge according to the present invention; Figure 4 The present invention is a schematic diagram of the internal structure of a fixing seat in a steel arch frame hoisting device for a reinforced concrete arch bridge.

[0024] The following are the descriptions of the reference numerals: 1. Fixed seat; 2. Gear; 3. Counterweight slot; 4. Electromagnet; 5. Counterweight block; 6. Load plate; 7. Driving motor; 8. Telescopic arm; 9. Support; 10. Auxiliary rod; 11. Winding seat; 12. Winding motor; 13. Winding drum; 14. Wire rope; 15. Hanger; 16. Bidirectional screw; 17. Guide rod; 18. Screw block; 19. Hanging rod; 20. Toothed disc; 21. Knob; 22. Adjusting motor; 23. Electric push rod; 24. Load plate; 25. Ear seat. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1-Figure 4 As shown, a steel arch frame lifting device for a reinforced concrete arch bridge comprises a fixed seat 1, an adjusting motor 22 is installed inside the upper end of the fixed seat 1 to provide power for the gear 2 to rotate, a gear 2 is arranged on the output shaft of the adjusting motor 22, a toothed disc 20 is connected to one side of the gear 2, a bearing disc 6 is fixed on the toothed disc 20, the gear 2 can drive the bearing disc 6 to rotate through the toothed disc 20, a counterweight groove 3 is opened on one side wall of the bearing disc 6, an L-shaped electromagnet 4 is arranged on the inner wall of the counterweight groove 3, a counterweight block 5 is arranged below the counterweight groove 3, the electromagnet 4 can adsorb and fix the counterweight block 5, there are multiple groups of counterweight blocks 5 and they are distributed along the rotation path of the bearing disc 6, a bearing plate 24 is arranged below the counterweight block 5, an electric push rod 23 is fixed to the bottom end of the bearing plate 24, the counterweight block 5 can be lifted.

[0026] In this embodiment, the output shaft of the adjusting motor 22 is fixedly connected to the gear 2, the gear 2 is meshed with the toothed disc 20, and the supporting disc 6 is fixed to the toothed disc 20 by bolts. The adjusting motor 22 drives the toothed disc 20 to rotate through the gear 2, and the toothed disc 20 then drives the supporting disc 6 to rotate to adjust the lifting position.

[0027] In this embodiment, the counterweight slot 3 is formed on the carrier plate 6, and the counterweight slot 3 is a rectangular structure. The electromagnet 4 is fixed to the adjacent two side walls of the counterweight slot 3 by screws. The combination of the counterweight slot 3 and the counterweight block 5 can ensure the overall balance of the device.

[0028] In this embodiment, the electric push rod 23 is installed in the fixed seat 1 by bolts, and the output end of the electric push rod 23 is connected to the bearing plate 24 by screws. The weights of the multiple groups of counterweight blocks 5 are different and they are made of iron. The electric push rod 23 can lift the counterweight block 5 into the counterweight slot 3 through the bearing plate 24.

[0029] In this embodiment, the supporting plate 6 is welded with a U-shaped support 9, and a telescopic arm 8 is rotatably installed inside the support 9. A driving motor 7 is fixed on a side wall of the support 9. The output shaft of the driving motor 7 is fixedly connected to the telescopic arm 8. The driving motor 7 can adjust the inclination angle of the telescopic arm 8.

[0030] In this embodiment, an auxiliary rod 10 with a telescopic structure is arranged between the bottom wall of the telescopic arm 8 and the carrying plate 6. The auxiliary rod 10 is hinged to the carrying plate 6 and the telescopic arm 8. The auxiliary rod 10 can provide auxiliary support to the telescopic arm 8, thereby ensuring its stability.

[0031] In this embodiment, a winding seat 11 is provided at the movable end of the telescopic arm 8, and a winding drum 13 is rotatably installed in the winding seat 11. A winding motor 12 is fixed on a side wall of the winding seat 11. The output shaft of the winding motor 12 is fixedly connected to the winding drum 13. A steel wire rope 14 is wound on the winding drum 13. The winding motor 12 drives the winding drum 13 to rotate to achieve winding or releasing of the steel wire rope 14.

[0032] In this embodiment, a U-shaped hanger 15 is fixed at one end of the wire rope 14, and a bidirectional screw 16 is rotatably installed in the hanger 15. A knob 21 is fixed at one end of the bidirectional screw 16, and a guide rod 17 is fixed above the bidirectional screw 16. The knob 21 can drive the bidirectional screw 16 to rotate, and the guide rod 17 can limit and guide the movement of the screw block 18.

[0033] In this embodiment, two groups of screw blocks 18 are symmetrically sleeved on the bidirectional screw 16 and the guide rod 17, a suspension rod 19 is fixed to the bottom end of the screw block 18, ear seats 25 are welded at the four corners of the fixing seat 1, and fixing holes are opened on the ear seats 25. During the rotation of the bidirectional screw 16, the screw block 18 drives the suspension rod 19 to move under the action of the thread and the guide rod 17, and then the spacing of the suspension rod 19 is adjusted according to the specifications of the steel arch frame. The ear seats 25 facilitate fixing the device on the mobile vehicle body.

[0034] A method for using a steel arch frame hoisting device for a reinforced concrete arch bridge: first, the fixing seat 1 is installed on a mobile vehicle body through the fixing on the ear seat 25 and the external power supply is turned on, and then a suitable counterweight block 5 is selected according to the weight of the steel arch frame to be hoisted, that is, the gear 2 is driven to rotate by the adjusting motor 22, and the gear 2 drives the bearing plate 6 to rotate through the toothed plate 20, and the counterweight slot 3 is adjusted to be above the counterweight block 5 to be used, and then the electric push rod 23 lifts the counterweight block 5 into the counterweight slot 3 through the bearing plate 24, and the electromagnet 4 is energized to adsorb it, thereby adsorbing and fixing the counterweight block 5 in the counterweight slot 3, and then the bearing plate 6 is reset. After resetting, the driving motor 7 adjusts the inclination angle of the telescopic arm 8 The degree is adjusted. During the adjustment process, the auxiliary rod 10 also extends and rotates accordingly to provide auxiliary support for the telescopic arm 8. At the same time, the telescopic arm 8 automatically extends and retracts to adjust the position of the hanger 15. After the adjustment is in place, the bidirectional screw 16 is driven to rotate through the knob 21 according to the specifications of the steel arch frame, and then the screw block 18 drives the hanger 19 to move under the action of the thread and the guide rod 17 to adjust the spacing, and then the steel arch frame is connected and fixed through the hanger 19, and the winding motor 12 drives the winding drum 13 to wind up the wire rope 14 to realize the lifting of the steel arch frame. During the lifting process, the hanger 15 can ensure the stability of the center of gravity of the steel arch frame, avoid its tilting, and ensure smooth lifting.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A steel arch frame hoisting device for a reinforced concrete arch bridge, characterized in that: The invention comprises a fixed seat (1), an adjusting motor (22) is installed inside the upper end of the fixed seat (1), a gear (2) is arranged on the output shaft of the adjusting motor (22), a toothed disc (20) is connected to one side of the gear (2), a bearing disc (6) is fixed on the toothed disc (20), a counterweight groove (3) is opened on one side wall of the bearing disc (6), an electromagnet (4) with an L-shaped structure is arranged on the inner wall of the counterweight groove (3), a counterweight block (5) is arranged below the counterweight groove (3), the counterweight blocks (5) are provided in multiple groups and are distributed along the rotation path of the bearing disc (6), a bearing plate (24) is arranged below the counterweight block (5), and an electric push rod (23) is fixed to the bottom end of the bearing plate (24).

2. The steel arch frame hoisting device for a reinforced concrete arch bridge according to claim 1, characterized in that: The output shaft of the regulating motor (22) is fixedly connected to the gear (2), the gear (2) is meshed with the toothed disc (20), and the supporting disc (6) is fixed to the toothed disc (20) by means of bolts.

3. The steel arch frame hoisting device for a reinforced concrete arch bridge according to claim 1, characterized in that: The counterweight slot (3) is formed on the carrying plate (6), the counterweight slot (3) is a rectangular parallelepiped structure, and the electromagnet (4) is fixed to adjacent two side walls in the counterweight slot (3) by means of screws.

4. The steel arch frame hoisting device for a reinforced concrete arch bridge according to claim 1, characterized in that: The electric push rod (23) is installed in the fixing seat (1) by means of bolts, and the output end of the electric push rod (23) is connected to the bearing plate (24) by means of screws. The weights of the plurality of groups of counterweight blocks (5) are different and they are made of iron.

5. The steel arch frame hoisting device for a reinforced concrete arch bridge according to claim 3, characterized in that: The bearing plate (6) is welded with a U-shaped support (9), a telescopic arm (8) is rotatably mounted inside the support (9), a drive motor (7) is fixed on a side wall of the support (9), and an output shaft of the drive motor (7) is fixedly connected to the telescopic arm (8).

6. The steel arch frame hoisting device for a reinforced concrete arch bridge according to claim 5, characterized in that: An auxiliary rod (10) having a telescopic structure is provided between the bottom wall of the telescopic arm (8) and the carrying plate (6); the auxiliary rod (10) is hingedly connected to the carrying plate (6) and the telescopic arm (8).

7. The steel arch frame hoisting device for a reinforced concrete arch bridge according to claim 6, characterized in that: A reel (11) is provided at the movable end of the telescopic arm (8), a reel (13) is rotatably mounted in the reel (11), a reel motor (12) is fixed to a side wall of the reel (11), an output shaft of the reel motor (12) is fixedly connected to the reel (13), and a steel wire rope (14) is wound around the reel (13).

8. The steel arch frame hoisting device for a reinforced concrete arch bridge according to claim 7, characterized in that: A U-shaped hanger (15) is fixed to one end of the steel wire rope (14), a bidirectional screw (16) is rotatably mounted in the hanger (15), a knob (21) is fixed to one end of the bidirectional screw (16), and a guide rod (17) is fixed above the bidirectional screw (16).

9. The steel arch frame hoisting device for a reinforced concrete arch bridge according to claim 8, characterized in that: Two sets of screw blocks (18) are symmetrically sleeved on the bidirectional screw rod (16) and the guide rod (17), a suspension rod (19) is fixed to the bottom end of the screw block (18), and ear seats (25) are welded at the four corners of the fixing seat (1), and the ear seats (25) are provided with fixing holes.

10. A method for using a steel arch frame hoisting device for a reinforced concrete arch bridge, applied to a steel arch frame hoisting device for a reinforced concrete arch bridge as claimed in any one of claims 1 to 9, characterized in that: First, the fixing seat (1) is mounted on the mobile vehicle body by fixing on the ear seat (25) and connected to an external power supply. Then, a suitable counterweight (5) is selected according to the weight of the steel arch frame to be hoisted, that is, the gear (2) is driven to rotate by the adjusting motor (22), and the gear (2) drives the bearing plate (6) to rotate through the toothed plate (20), and the counterweight slot (3) is adjusted to be above the counterweight (5) to be used. Then, the electric push rod (23) lifts the counterweight (5) into the counterweight slot (3) through the bearing plate (24), and the electromagnet (4) is energized to adsorb it, thereby adsorbing and fixing the counterweight (5) in the counterweight slot (3). Then, the bearing plate (6) is reset. After the reset, the driving motor (7) adjusts the inclination angle of the telescopic arm (8). The degree of adjustment is performed. During the adjustment process, the auxiliary rod (10) also extends and rotates accordingly to provide auxiliary support for the telescopic arm (8). At the same time, the telescopic arm (8) automatically extends and retracts to adjust the position of the hanger (15). After the adjustment is in place, the bidirectional screw (16) is driven to rotate through the knob (21) according to the specifications of the steel arch frame, so that the screw block (18) drives the hanger (19) to move and adjust the spacing under the action of the thread and the guide rod (17). The steel arch frame is then connected and fixed through the hanger (19). The winding motor (12) drives the winding drum (13) to wind up the steel wire rope (14) to realize the lifting of the steel arch frame. During the lifting process, the hanger (15) can ensure the stability of the center of gravity of the steel arch frame, avoid its tilting, and ensure smooth lifting.

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