Detachable hoisting device suitable for aloft work and construction method

Abstract

The detachable hoisting device comprises a steel wire clamping column, a limiting rope groove, a steel wire rope, an elastic support, an electric executing mechanism, an upper lifting lug, a lower lifting lug and a frame. The frame comprises an upper cover plate, a lower cover plate, a left limiting fixing baffle and a right limiting fixing baffle. A limiting rope groove is formed in the end of the steel wire clamping column, an elastic support is fixedly arranged at the bottom of the steel wire clamping column, and an electric executing mechanism is arranged on the lower portion of the frame. The construction method comprises the following processes: fixing the hoisting equipment and the hoisting devices, initially fixing the hoisting devices and the hoisting equipment, finally fixing the hoisting devices and the hoisting equipment, fixing equipment to be hoisted, unhooking the hoisting devices, unhooking the hoisting devices, completing the hoisting process, recovering the equipment and the like. The detachable hoisting device and the construction method are suitable for high-altitude hoisting and dismounting, the danger coefficient of high-altitude hoisting and dismounting personnel can be greatly reduced, the high-altitude hoisting and dismounting capacity is improved, then the machine team of a crane is reduced, the high-altitude hoisting cost is reduced, and the construction progress is accelerated.

Description

Technical Field

[0001] The invention relates to a detachable hoisting device and a construction method suitable for high-altitude operations, in particular to a detachable hoisting device for large heavy objects, belonging to the technical field of high-altitude hoisting and disassembly. Background Art

[0002] In the process of building modern large-scale power plants, many large equipment need to be hoisted at high altitudes. In the process of hoisting large heavy objects, the key link of high-altitude hoisting and disassembly is often accompanied. How to deal with the fixed high-altitude equipment to be hoisted during the high-altitude hoisting operation is becoming more and more difficult, cumbersome and time-consuming. In the past, the traditional handling of equipment to be hoisted during high-altitude hoisting often relied on manpower to disassemble the equipment to be hoisted at high altitudes. The operation was complicated and required professional and superb skills. There were great safety hazards and it was time-consuming and labor-intensive.

[0003] Chinese patent CN 217838175 U (patent name: A high-altitude hoisting device for a wind turbine generator set) discloses a high-altitude hoisting device for a wind turbine generator set, comprising: a bracket, the bracket is detachably mounted on the top of the hub of the wind turbine generator set, one end of the bracket extends toward the front side of the hub; a winch, the winch is arranged on the bracket, and a hoisting rope is wound on the winch; a fixed pulley, the fixed pulley is arranged at one end of the bracket, and guides the hoisting rope downward. The utility model can improve the strength of the bracket by setting the bracket as a frame structure, thereby making the high-altitude hoisting equipment more solid and improving the safety of the hoisting operation.

[0004] Chinese patent CN 214270009 U (patent name: a flare tower high-altitude hoisting device) discloses a flare tower high-altitude hoisting device, including a cantilever crane, the cantilever crane is detachably connected to the upper end of the lifting column, the outer sleeve of the lifting column is provided with a fixed cylinder, the upper and lower lengths of the fixed cylinder are smaller than the upper and lower lengths of the lifting column, the fixed cylinder is detachably connected to the flare tower, and a lifting mechanism is detachably connected to the fixed cylinder, the lifting mechanism includes a hook that can move up and down, and the lower end of the lifting column is hooked with the hook. The beneficial effects of the utility model are: simple structure, easy to use, strong detachability, can be disassembled in a non-destructive manner, easy to replace, and reduce maintenance costs. The hoisting and installation of the torch head can be realized, and the height of the cantilever crane can be adjusted to prevent the cantilever crane from being burned when the torch head is burning.

[0005] The above two lifting methods are both high-altitude lifting methods, but the disassembly operation of this traditional high-altitude lifting method still has many limitations and technical difficulties. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a detachable lifting device and a construction method suitable for high-altitude operations to solve the defects of the existing traditional high-altitude lifting and disassembly device processing methods.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: A detachable lifting device suitable for aerial work, comprising a wire clamp column, a limit rope groove, a wire rope, an elastic support, an electric actuator, an upper lifting ear, a lower lifting ear and a frame; the frame comprises an upper cover plate, a lower cover plate, a left limit fixed baffle plate and a right limit fixed baffle plate; a limit rope groove is provided at the end of the wire clamp column, an elastic support is fixedly provided at the bottom of the wire clamp column, and the lower side of the elastic support is fixedly connected to the lower cover plate; an electric actuator is provided at the lower part of the frame, the electric actuator is connected to the lower lifting ear, and the electric actuator can pull the lower lifting ear downward when executing.

[0008] Furthermore, the upper cover plate and the lower cover plate are symmetrically distributed up and down, and the left limit fixed baffle and the right limit fixed baffle are located on the left and right sides between the upper cover plate and the lower cover plate, forming a fixed frame; the wire clamp column is arranged between the left limit fixed baffle and the right limit fixed baffle, and the upper lifting ear and the lower lifting ear are respectively fixedly arranged on the upper and lower sides of the wire clamp column and extend through the outside of the frame, and the upper cover plate and the lower cover plate are respectively provided with through holes matching the positions of the upper lifting ear and the lower lifting ear.

[0009] Furthermore, the wire clamp column is a circular steel column that can withstand a force that exceeds 125% of the load-bearing capacity of the equipment to be hoisted; the rope end of the wire rope is embedded in the limiting rope groove, and the wire rope is a wire rope that can withstand 125% of the force of the equipment to be hoisted; the elastic support is a coil spring, and two or more groups can be set according to needs; the upper lifting ear is one or more, and is made of steel plates with a diameter of 5 mm or more.

[0010] The construction method of the detachable lifting device suitable for high-altitude operations has the following specific steps: Step 1: Fix the upper lifting lug to the steel wire rope outside the hook of the lifting device, and fix the lifting device to the detachable lifting device, which is the step of fixing the lifting device to the lifting device; Step 2: Extend the wire rope to fix the equipment to be hoisted, fix the wire rope and the equipment to be hoisted and tighten the wire rope for more than 3 turns. When the fixation and tightening are completed, wind the wire rope between the upper cover plate and the wire clamp column and embed the wire rope head into the limit rope groove. This is the initial fixation step of the hoisting device and the hoisting equipment. Step 3: The lifting device gradually lifts the hook, and the upper lifting lug gradually locks and fixes the steel wire rope between the steel wire clamp column and the upper cover plate as the lifting device lifts the hook, so that the lifting device and the lifting device are finally fixed; Step 4: After the equipment to be lifted is pulled to the specified position by the lifting hook of the lifting equipment, the lifting is completed and the equipment to be lifted is fixed at the specified position; Step 5: The lifting device lowers the hook, the spiral spring as the elastic support is reset, the upper cover plate is separated from the wire clamp column, and the lifting device releases the hook; Step 6: Operate the remote control of the electric actuator, the electric actuator pulls back the lower lifting lug, the wire clamp column and the upper cover plate present the maximum distance, the lifting device slowly hooks up, the wire rope detaches from the lifting device, the unhooking procedure is completed, and the lifting device is unhooked; Step 7: After the lifting equipment turns to leave the detachable lifting device, the detachable lifting device is disassembled and recovered, and the wire rope is separated from the wire clamp column.

[0011] In step 3, the lifting device is gradually hooked, and the angle between the wire rope in the upper lifting ear and the lifting device hook is greater than 30° and less than 90°. The upper cover plate is tightly connected to the wire clamp column, and the wire rope is locked.

[0012] In step 4, after the equipment to be hoisted is pulled to a specified position, the steel wire rope in the upper hoisting ear is in a relaxed state.

[0013] In step 1, the lifting equipment is selected from crawler-type, tower-type or truck-type lifting equipment.

[0014] Compared with the existing high-altitude disassembly technology, the hoisting device and construction method of the present invention are suitable for high-altitude hoisting and disassembly, which can greatly reduce the risk factor of high-altitude hoisting and disassembly personnel, speed up the high-altitude hoisting and disassembly capacity, thereby reducing the number of crane shifts, reducing the high-altitude hoisting cost, and speeding up the construction progress.

[0015] The positive beneficial effects of the present invention are as follows: 1. The present invention fastens the detachable lifting device suitable for aerial work with the equipment to be lifted and then connects it with the lifting facility hook, which is easy to install and simple to operate.

[0016] 2. The present invention can complete the task of dismantling wire ropes during high-altitude lifting on the ground, which can greatly reduce the risk factor of high-altitude lifting and dismantling personnel, reduce the number of staff and construction time, and the number of lifting equipment shifts, speed up the high-altitude lifting and dismantling capabilities, reduce the high-altitude lifting costs, and speed up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the description of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other corresponding drawings can be obtained based on these drawings without creative work. By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present invention will become more obvious: Figure 1 It is a structural schematic diagram of a detachable lifting device suitable for aerial work in the present invention; Figure 2 It is a flowchart of the construction method of the present invention; Figure 3 It is a schematic diagram of the detachable lifting device with the wire rope locked after the lifting equipment is hooked; Figure 4 It is a schematic diagram of the detachable lifting device, lifting equipment and equipment to be lifted in place; Figure 5 It is the state of the wire rope after the electric actuator pulls the lower lifting eye back downwards; Figure 6 It is the state of the detachable lifting device after it falls back to the ground.

[0018] In the attached drawings: 1--wire clamp column, 2--limiting rope groove, 3--wire rope, 4--elastic support, 5--electric actuator, 6--upper lifting ear, 7--lower lifting ear, 8--frame, 801--upper cover plate, 802--lower cover plate, 803--left limiting fixed baffle, 804--right limiting fixed baffle. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: A detachable lifting device suitable for aerial work, comprising a wire clamp column 1, a limiting rope groove 2, a wire rope 3, an elastic support 4, an electric actuator 5, an upper lifting ear 6, a lower lifting ear 7 and a frame 8; the frame 8 comprises an upper cover plate 801, a lower cover plate 802, a left limiting fixed baffle plate 803 and a right limiting fixed baffle plate 804; a limiting rope groove 2 is provided at the end of the wire clamp column 1, an elastic support 4 is fixedly provided at the bottom of the wire clamp column 1, and the lower side of the elastic support 4 is fixedly connected to the lower cover plate 802; an electric actuator 5 is provided at the lower part of the frame 8, the electric actuator 5 is connected to the lower lifting ear 7, and the electric actuator 5 can pull the lower lifting ear 7 downward when executing.

[0021] Among them: the upper cover plate 801 and the lower cover plate 802 are symmetrically distributed in the upper and lower parts, the left limit fixed baffle 803 and the right limit fixed baffle 804 are located on the left and right sides between the upper cover plate 801 and the lower cover plate 802, and are a fixed frame; the wire clamp column 1 is arranged between the left limit fixed baffle 803 and the right limit fixed baffle 804, the upper lifting ear 6 and the lower lifting ear 7 are respectively fixedly arranged on the upper and lower sides of the wire clamp column 1 and extend through the outside of the frame 8, and through holes matching the positions of the upper lifting ear 6 and the lower lifting ear 7 are respectively arranged on the upper cover plate 801 and the lower cover plate 802.

[0022] The wire clamp column 1 is a circular steel column that can withstand a force that exceeds 125% of the load-bearing capacity of the equipment to be hoisted; the rope end of the wire rope 3 is embedded in the limiting rope groove 2, and the wire rope 3 is a wire rope that can withstand 125% of the force of the equipment to be hoisted; the elastic support 4 is a spiral spring, and two or more groups can be set according to needs; the upper lifting ear 6 is one or more, and is made of steel plates with a thickness of more than 5 mm.

[0023] Embodiment 2: The construction method of the detachable lifting device suitable for high-altitude operations described in Embodiment 1, the specific steps are as follows: Step 1: Fix the upper lifting lug 6 to the steel wire rope outside the lifting device hook, and fix the lifting device to the detachable lifting device, which is a step of fixing the lifting device to the lifting device; Step 2: Extend the steel wire rope 3 to fix the equipment to be hoisted, fix the steel wire rope 3 and the equipment to be hoisted and tighten the steel wire rope for more than 3 turns. When the fixing and tightening is completed, wind the steel wire rope 3 to the middle of the upper cover plate 801 and the steel wire clamp column 1 and embed the steel wire rope head into the limiting rope groove 2, which is the initial fixing step of the hoisting device and the hoisting equipment; Step 3: The lifting device gradually lifts the hook, and the upper lifting lug 6 gradually locks and fixes the steel wire rope 3 between the steel wire clamp column 1 and the upper cover plate 801 as the lifting device lifts the hook, so that the lifting device and the lifting device are finally fixed; Step 4: After the equipment to be lifted is pulled to the specified position by the lifting hook of the lifting equipment, the lifting is completed and the equipment to be lifted is fixed at the specified position; Step 5: The lifting device lowers the hook, the coil spring 4 serving as the elastic support is reset, the upper cover plate 801 is separated from the wire clamp column 1, and the lifting device releases the hook; Step 6: operate the remote control of the electric actuator 5, the electric actuator 5 pulls back the lower lifting lug 7, the wire clamp column 1 and the upper cover plate 801 present the maximum distance, the lifting device slowly hooks up, the wire rope 3 is separated from the lifting device, the unhooking procedure is completed, and the lifting device is unhooked; Step 7: After the lifting equipment turns to leave the detachable lifting device, the detachable lifting device is disassembled and recovered, and the wire rope 3 is separated from the wire clamp column 1.

[0024] In step 3, the lifting device is gradually hooked, and the angle between the wire rope in the upper lifting ear 6 and the lifting device hook is greater than 30° and less than 90°. The upper cover plate 801 is tightly connected to the wire clamp column 1, and the wire rope 3 is locked.

[0025] In step 4, after the equipment to be hoisted is pulled to a specified position, the steel wire rope in the upper hoisting eye 6 is in a relaxed state.

[0026] In step 1, the lifting equipment is selected from crawler, tower or truck-type lifting equipment.

[0027] Embodiment 3: A specific example of a construction method of a detachable hoisting device suitable for aerial work: Step 1: Assemble a piece of waste heat furnace combined steel frame in the power plant on the ground, the weight is 14.773t. Use steel wire rope (6*37) to connect the 55t truck crane with the upper lifting lug of the detachable lifting device suitable for high-altitude operation of the present invention; Step 2: After the embedded steel wire rope (6*37) in the detachable lifting device of the present invention is extended and wrapped around the combined steel frame of the waste heat furnace, the embedded steel wire rope (6*37) is pulled between the steel wire clamp column and the upper cover plate in the detachable lifting device of the present invention; Step 3: The 55t truck crane starts to lift the hook, and the upper lifting ear in the detachable lifting device of the present invention is tightened by the steel wire rope (6*37), so that the steel wire rope (6*37) embedded between the upper cover plate and the steel wire clamp column in the device is firmly fixed, and the spring support is in a stretched state at this time; Step 4: The 55t truck crane towed the waste heat furnace combined steel frame, which weighed 14.773t, to 14 meters above the slag pool in the power plant. The ground personnel then fixed the anchor bolts at the four corners of the waste heat furnace combined steel frame to complete the hoisting task; Step 5: The hook of the 55t truck crane is lowered, the spring in the detachable lifting device of the present invention is reset, and the upper cover plate and the wire clamp column in the device are separated; Step 6: The ground personnel operate the remote control of the electric actuator to slowly pull back the lower lifting ear on the wire clamp column, so that the wire clamp column and the upper cover plate are at the maximum distance, which is convenient for the embedded wire rope (6*37) to be loosened from the waste heat furnace combined steel frame. The 55t truck crane slowly hooks up, and the embedded wire rope (6*37) is slowly separated from the waste heat furnace combined steel frame as the 55t truck crane hooks up, thus achieving the complete separation of the waste heat furnace combined steel frame from the fixed equipment. Step 7: The 55t truck crane turns, and the device slowly falls to the ground along with the crane hook. The relevant ground operators disassemble and recover the device to complete the entire process.

[0028] In the present invention, all terms related to directions such as "upper", "lower", "front end", "rear end", "left", "right", "left side", "right side", "upper", "lower", etc. are intended to explain the structure and technical solutions of the present invention, but do not limit the structure and technical solutions of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable lifting device suitable for aerial work, characterized in that: The detachable lifting device comprises a wire clamp column (1), a limit rope groove (2), a wire rope (3), an elastic support (4), an electric actuator (5), an upper lifting lug (6), a lower lifting lug (7) and a frame (8); the frame (8) comprises an upper cover plate (801), a lower cover plate (802), a left limit fixed baffle plate (803) and a right limit fixed baffle plate (804); a limit rope groove (2) is arranged at the end of the wire clamp column (1), an elastic support (4) is fixedly arranged at the bottom of the wire clamp column (1), and the lower side of the elastic support (4) is fixedly connected to the lower cover plate (802); an electric actuator (5) is arranged at the lower part of the frame (8), the electric actuator (5) is connected to the lower lifting lug (7), and the electric actuator (5) can pull the lower lifting lug (7) back downwards when being executed.

2. The detachable lifting device suitable for aerial work according to claim 1 is characterized in that: The upper cover plate (801) and the lower cover plate (802) are symmetrically arranged in the upper and lower parts; the left limit fixed baffle plate (803) and the right limit fixed baffle plate (804) are located on the left and right sides between the upper cover plate (801) and the lower cover plate (802), forming a fixed frame; the wire clamp column (1) is arranged between the left limit fixed baffle plate (803) and the right limit fixed baffle plate (804); the upper lifting ear (6) and the lower lifting ear (7) are respectively fixedly arranged on the upper and lower sides of the wire clamp column (1) and penetrate through the outer side of the extended frame (8); and the upper cover plate (801) and the lower cover plate (802) are respectively provided with through holes matching the positions of the upper lifting ear (6) and the lower lifting ear (7).

3. The detachable lifting device suitable for aerial work according to claim 2 is characterized in that: The wire clamp column (1) is a circular steel column that can withstand a load that exceeds 125% of the load-bearing capacity of the equipment to be hoisted; the rope end of the wire rope (3) is embedded in the limit rope groove (2), and the wire rope (3) is a wire rope that can withstand 125% of the load of the equipment to be hoisted; the elastic support (4) is a spiral spring, and two or more groups can be provided according to needs; the upper lifting ear (6) is one or more and is made of a steel plate with a thickness of more than 5 mm.

4. The construction method of the detachable lifting device suitable for aerial work according to any one of claims 1 to 3, wherein the specific steps are as follows: Step 1: The upper lifting lug (6) is fixedly connected to the steel wire rope outside the hook of the lifting device, and the lifting device is fixed to the detachable lifting device, which is a step of fixing the lifting device to the lifting device; Step 2: Extend the steel wire rope (3) to fix the equipment to be hoisted, fix the steel wire rope (3) and the equipment to be hoisted and tighten the steel wire rope for more than 3 turns. When the fixing and tightening are completed, wind the steel wire rope (3) between the upper cover plate (801) and the steel wire clamp column (1) and embed the steel wire rope head into the limiting rope groove (2), which is the initial fixing step of the hoisting device and the hoisting equipment; Step 3: The lifting device gradually lifts the hook, and the upper lifting lug (6) gradually locks and fixes the steel wire rope (3) between the steel wire clamp column (1) and the upper cover plate (801) as the lifting device lifts the hook, thereby finally fixing the lifting device and the lifting device; Step 4: After the equipment to be lifted is pulled to the specified position by the lifting hook of the lifting equipment, the lifting is completed and the equipment to be lifted is fixed at the specified position; Step 5: The lifting device lowers the hook, the coil spring (4) serving as the elastic support is reset, the upper cover plate (801) is separated from the wire clamp column (1), and the lifting device releases the hook; Step 6: Operate the remote control of the electric actuator (5), the electric actuator (5) pulls back the lower lifting lug (7), the wire clamp column (1) and the upper cover plate (801) are at the maximum distance, the lifting device slowly hooks up, the wire rope (3) is separated from the lifting device, the unhooking procedure is completed, and the lifting device is unhooked; Step 7: After the lifting device turns away from the detachable lifting device, the detachable lifting device is disassembled and recovered, and the steel wire rope (3) is separated from the steel wire clamp column (1).

5. The construction method according to claim 4, characterized in that: In step 3, the lifting device is gradually hooked, and the angle between the steel wire rope in the upper lifting ear (6) and the lifting device hook is greater than 30° and less than 90°. The upper cover plate (801) is tightly connected to the steel wire clamp column (1), and the steel wire rope (3) is locked.

6. The construction method according to claim 4, characterized in that: In step 4, after the equipment to be hoisted is pulled to a specified position, the steel wire rope in the upper hoisting eye (6) is in a relaxed state.

7. The construction method according to claim 4, characterized in that: In step 1, the lifting equipment is selected from crawler-type, tower-type or truck-type lifting equipment.

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