CN223047129U - A lifting device - Google Patents

Abstract

The utility model relates to a lifting device, which belongs to the technical field of lifting equipment and comprises a lifting frame, a lifting assembly and a lifting angle adjusting assembly, wherein a lifting beam is rotatably arranged on the lifting frame, one end of the lifting beam is provided with the lifting assembly to form a lifting end, the other end of the lifting beam is connected with the lifting angle adjusting assembly to form an adjusting end, the lifting assembly comprises a first power piece and a lifting rope, the first power piece is arranged on the lifting frame, the power end of the first power piece is connected with the lifting rope, the lifting rope is used for fixing an object to be lifted, the lifting angle adjusting assembly is provided with a second power piece, the second power piece is arranged on the lifting frame, and the power end of the second power piece is connected with the adjusting end of the lifting beam to adjust the angle of the lifting beam for rotary movement around a rotary connecting point. The lifting device adopts the lever structure formed by the lifting beam and the lifting frame, has low overall structure height, can adjust the lifting height by adjusting the lifting beam adjusting end, and meets the working requirement of construction space limitation between floors.

Description

Hoisting device

Technical Field

The utility model relates to a lifting device, and belongs to the technical field of lifting equipment.

Background

The frame-core tube structure is a structural form formed by the core tube and the peripheral frame, and has wide application in super high-rise buildings because the good stress performance and the flexibility of the internal space become the main structural form adopted in the international super high-rise buildings at present.

In the super high-rise construction of the frame-core tube structure, a core tube advance principle is adopted usually, the installation of the outer frame steel structure is 6-8 layers behind the core tube structure, and the installation of the outer frame floor plate is 6-8 layers behind the steel structure. The construction of the core tube structure generally adopts an inner climbing form and an outer climbing form to construct a vertical shear wall cylinder structure in advance, the climbing form is hung on the inner wall and the outer wall of the core tube, and the reservation of the front room floor of the elevator of the core tube and the synchronous construction of the later outer frame floor are carried out. The top structure of the core tube is generally cancelled by a low-middle elevator shaft, so that the rigidity of the whole structure of the core tube is reduced, the height of the top structure is generally two hundred meters, the top wind load is rapidly increased, in order to ensure the construction safety of the structure of the core tube, a plurality of floors, which are not constructed, of the floor slab of the lower part of the core tube are required to be temporarily reinforced, and the temporary section steel support is added between the core tube arm and the formal steel column steel beam to replace the floor slab, which is not constructed, so that the wind load born by the core tube is transferred to the outer frame steel structure to form the whole stress, and the structural safety is ensured. The temporary added section steel support generally adopts channel steel with larger volume, the weight of a single steel is 800 kg-1000 kg, and how to quickly and safely dismantle the temporary section steel support after later-stage floor plate construction is a great difficulty.

Because the dismantlement of interim shaped steel is located between the floor of having built, when the current hoisting device of adoption carries out supplementary dismantlement, there is the problem of construction space restriction, leads to current hoisting device unable entering, perhaps lifts by crane the in-process, and hoisting device's lifting arm receives the condition of the unable normal construction of high influence. Therefore, a lifting device is needed to solve the problem that in the prior art, when the prior lifting device is adopted to disassemble the temporary section steel between floors, the lifting device cannot effectively lift due to the limitation of floor construction space.

Disclosure of utility model

The present utility model is directed to a lifting device, which solves the above-mentioned problems in the prior art.

The lifting device comprises a lifting frame, a lifting assembly and a lifting angle adjusting assembly, wherein a lifting beam is rotatably arranged on the lifting frame, one end of the lifting beam is provided with the lifting assembly to form a lifting end, the other end of the lifting beam is connected with the lifting angle adjusting assembly to form an adjusting end, the lifting assembly comprises a first power piece and a lifting rope, the first power piece is arranged on the lifting frame, the power end of the first power piece is connected with the lifting rope, the lifting rope is used for fixing an object to be lifted, the lifting angle adjusting assembly is provided with a second power piece, the second power piece is arranged on the lifting frame, and the power end of the second power piece is connected with the adjusting end of the lifting beam to adjust the angle of the lifting beam for rotating around a rotating connecting point.

Specifically, a lifting vertical beam is arranged on the lifting frame, the lifting beam is rotatably arranged at the top of the lifting vertical beam, and the lifting beam is hinged with the lifting vertical beam.

The first power piece comprises a winch and a fixed pulley, the fixed pulley is fixedly arranged at a hoisting end, one end of a hoisting rope is connected with the power end of the winch, the other end of the hoisting rope penetrates through the fixed pulley at the hoisting end to form a fixed end of an object to be hoisted, and the winch is fixedly arranged on a hoisting frame.

Specifically, the number of the fixed pulleys is a plurality, the fixed pulleys are fixedly arranged on the lifting frame at intervals, one fixed pulley is fixedly arranged at the lifting end of the lifting beam, and one end of the lifting rope, which is far away from the winch, sequentially penetrates through the lifting frame and the fixed pulleys at the lifting end.

The second power piece comprises a chain block and two adjusting pull rings, wherein the two adjusting pull rings are respectively and fixedly arranged at the adjusting end of the lifting beam and the lifting frame, the chain block is arranged at the adjusting pull ring of the adjusting end of the lifting beam, and a hook at the power end of the chain block is hooked with the adjusting pull ring of the lifting frame.

Specifically, the crane is provided with a base, and moving wheels are installed at four corners of the bottom of the base.

Specifically, the movable wheel is a lockable universal wheel.

Specifically, a movable handrail frame is fixedly arranged on the lifting frame.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the application, the lifting beam is hinged on the lifting frame, one end of the lifting beam is provided with the first power piece and the lifting rope to form the lifting end, and the other end of the lifting beam is provided with the second power piece to control the lifting beam to rotate relative to the lifting frame to form the adjusting end, so that after the section steel is lifted by the lifting end, the lifting height is adjusted by the adjusting end to remove the section steel. According to the lifting device, the lifting beam and the lifting frame are adopted to form a lever structure, the overall structure is low in height, the lifting height is adjusted by adjusting the adjusting end, the working requirement of construction space limitation among floors is met, and the problem that an inner small steel beam cannot be removed by means of existing lifting equipment after construction of an ultra-high floor plate can be effectively solved.

2. On the basis of the above, the first power piece comprises the winch and the fixed pulley, and the lifting rope is driven by the winch to lift around the fixed pulley, so that the normal lifting of the heavy object is met, and the occupied space of the winch is small. The whole lifting device cannot occupy too large space.

3. On the basis of the above, the second power piece adopts the chain block, and the characteristics of the chain block of speed reduction and reinforcement are utilized, so that an operator can control the hoisting device only by providing smaller force. And the chain block is convenient for carry out fine operation, is convenient for control the angle of lifting by crane, and the operation security is high. Meanwhile, the chain block has an automatic locking function, so that the lifting beam is controlled to stop at a set position in the lifting process, the section steel is convenient to dismantle, and the construction safety can be further improved.

4. On the basis of the above, the lifting frame is provided with the base, the bottom of the base is provided with the universal wheels, and the lifting frame is provided with the movable handrail frame. So as to realize the movement of the lifting device when the section steel is removed, and improve the construction efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a lifting device according to the present embodiment.

Detailed Description

The present utility model will be specifically described with reference to examples below in order to make the objects and advantages of the present utility model more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the utility model and does not limit the scope of the utility model strictly as claimed.

Referring to fig. 1, the embodiment discloses a lifting device, which comprises a lifting frame 1, a lifting assembly and a lifting angle adjusting assembly, wherein the lifting frame is rotatably provided with a lifting beam 4, one end of the lifting beam 4 is provided with the lifting assembly to form a lifting end, the other end of the lifting beam is connected with the lifting angle adjusting assembly to form an adjusting end, the lifting assembly comprises a first power piece and a lifting rope 9, the first power piece is arranged on the lifting frame, the power end of the first power piece is connected with the lifting rope, the lifting rope is used for fixing an object to be lifted, the lifting angle adjusting assembly is provided with a second power piece, the second power piece is arranged on the lifting frame, and the power end of the second power piece is connected with the adjusting end of the lifting beam to adjust the angle of the lifting beam for rotating around a rotating connecting point.

The lifting frame of the embodiment is provided with a lifting vertical beam 3, the lifting beam 4 is rotatably arranged at the top of the lifting vertical beam 3, and the lifting beam 4 is hinged with the lifting vertical beam 3. The lifting frame is provided with a base 1, and moving wheels are arranged at four corners of the bottom of the base. The movable wheel of the embodiment is a lockable universal wheel. In order to facilitate the overall movement of the lifting device, the movable armrest frame 10 is fixedly mounted on the lifting frame of the present embodiment.

Further, the first power piece of the embodiment comprises a winch 2 and a fixed pulley, the fixed pulley is fixedly arranged at a hoisting end, one end of a hoisting rope is connected with the power end of the winch, the other end of the hoisting rope penetrates through the fixed pulley at the hoisting end, and the winch is fixedly arranged on a hoisting frame. The number of the fixed pulleys is three, wherein two fixed pulleys are arranged on a lifting vertical beam at intervals along the radial direction to form a fixed pulley 6 and a fixed pulley 7, and the other fixed pulley is fixedly arranged on the lifting end of the lifting beam to form a fixed pulley 5. The lifting rope of this embodiment adopts a steel wire rope, one end of which is connected with the hoist 2, and the other end sequentially passes through three fixed pulleys along the lifting vertical beam towards the lifting beam, and finally the object to be lifted is fixed at the end.

In addition, the second power part of the embodiment comprises a chain block 8 and two adjusting pull rings, wherein the two adjusting pull rings are fixedly arranged at the adjusting end of the lifting beam and the lifting frame respectively, the chain block is arranged at the adjusting pull ring of the adjusting end of the lifting beam, and a hook at the power end of the chain block is hooked with the adjusting pull ring of the lifting frame.

Working principle: when the lifting device is used, firstly, before the steel beam is dismantled, an operator moves the lifting device to a set position through the movable handrail frame on the lifting frame, and after the position is reached, universal wheels at the bottom are locked. And then the angle of the lifting end of the lifting beam is adjusted through the chain block. And moving the hoisting end to the upper side of the steel beam, fixing the steel beam by using a steel wire rope, and adjusting a winch to tighten and fix the hoisting steel wire rope. The step can effectively prevent the falling risk of the steel beam in the dismantling process.

And secondly, after the steel beam is fixed, the steel beam dismantling operation can be started. In the dismantling process, the angle of the lifting beam is adjusted through the chain block so as to keep the stability of the steel beam in the dismantling process. In the process, the lifting device is applicable to limited operation space and can effectively solve the problem of dismantling the small steel beam.

And thirdly, after the two ends of the steel beam are dismantled, the lifting beam is adjusted to rotate around the rotation connecting point through the chain block, so that the lifting beam slowly tends to be horizontal. After the lifting beam tends to a proper angle, the steel beam slowly falls to the ground by controlling the winch. According to the process, the lifting beam is adjusted through the chain block, and the steel wire rope is controlled through the winch, so that the steel beam falls to the ground stably, and the instability risk in the steel beam falling process is effectively avoided.

While the embodiments of the present utility model have been described in detail with reference to the examples, the present utility model is not limited to the above embodiments, and it will be apparent to those skilled in the art that various equivalent changes and substitutions can be made therein without departing from the principles of the present utility model, and such equivalent changes and substitutions should also be considered to be within the scope of the present utility model.

Claims (8)

1. A lifting device comprises a lifting frame, a lifting assembly and a lifting angle adjusting assembly and is characterized in that a lifting beam is rotatably arranged on the lifting frame, one end of the lifting beam is provided with the lifting assembly to form a lifting end, the other end of the lifting beam is connected with the lifting angle adjusting assembly to form an adjusting end, the lifting assembly comprises a first power piece and a lifting rope, the first power piece is arranged on the lifting frame, the power end of the first power piece is connected with the lifting rope, the lifting rope is used for fixing an object to be lifted, the lifting angle adjusting assembly is provided with a second power piece, the second power piece is arranged on the lifting frame, and the power end of the second power piece is connected with the adjusting end of the lifting beam to adjust the angle of the lifting beam for rotary movement around a rotary connecting point.

2. The hoisting device of claim 1, wherein the hoisting frame is provided with a hoisting vertical beam, the hoisting beam is rotatably mounted on the top of the hoisting vertical beam, and the hoisting beam is hinged with the hoisting vertical beam.

3. The hoisting device according to claim 1, wherein the first power piece comprises a hoist and a fixed pulley, the fixed pulley is fixedly arranged at a hoisting end, one end of the hoisting rope is connected with the power end of the hoist, the other end of the hoisting rope penetrates through the fixed pulley at the hoisting end, and the hoist is fixedly arranged on the hoisting frame.

4. The hoisting device according to claim 3, wherein the number of the fixed pulleys is several, the fixed pulleys are fixedly arranged on the hoisting frame at intervals, one fixed pulley is fixedly arranged on the hoisting end of the hoisting beam, and one end of the hoisting rope, which is far away from the hoisting machine, sequentially passes through the fixed pulleys on the hoisting frame and the hoisting end.

5. The hoisting device of claim 1, wherein the second power piece comprises a chain block and two adjusting pull rings, the two adjusting pull rings are fixedly arranged at the adjusting end of the hoisting beam and the hoisting frame respectively, the chain block is arranged at the adjusting pull ring of the adjusting end of the hoisting beam, and a hook at the power end of the chain block is hooked with the adjusting pull ring of the hoisting frame.

6. The hoisting device of claim 1, wherein the hoisting frame is provided with a base, and moving wheels are arranged at four corners of the bottom of the base.

7. The lifting device of claim 6, wherein the movable wheels are lockable universal wheels.

8. The lifting device of claim 1, wherein the lifting frame is fixedly provided with a movable handrail frame.