CN116395547A

CN116395547A - Fixed lifting device

Info

Publication number: CN116395547A
Application number: CN202310578196.1A
Authority: CN
Inventors: 赵晟钧; 董小文; 姜海军; 曾凡海; 曹晓光; 李海波; 陈涛; 崔伟龙
Original assignee: Qingdao Duanyi Metal Co ltd
Current assignee: Qingdao Duanyi Metal Co ltd
Priority date: 2023-05-22
Filing date: 2023-05-22
Publication date: 2023-07-07

Abstract

The invention relates to the field of building construction, in particular to fixed hoisting equipment. The invention provides fixed hoisting equipment, which can improve the hoisting efficiency of the equipment on a workpiece and stabilize the hoisting process of the equipment on the workpiece. A fixed hoisting device comprises a fixed seat, a steering motor, a steering mechanism and the like; the fixed seat is fixedly connected with a steering motor, the steering mechanism is arranged on the steering motor, and the winding and unwinding mechanism is arranged on the steering mechanism. The operator starts steering motor and servo motor for the work piece is cliied to the anchor clamps, and the operator adjusts servo motor, and anchor clamps can drive the work piece and remove to suitable position and loosen the work piece, so, receive and release wheel in the hoist and mount process can lead the lifting rope, makes lifting rope and hanging seat be difficult for the skew in the in-process that reciprocates, thereby can make the work piece be more accurately cliied to anchor clamps on the hanging seat, makes this equipment higher to the hoist and mount efficiency of work piece.

Description

Fixed lifting device

Technical Field

The invention relates to the field of building construction, in particular to fixed hoisting equipment.

Background

The hoisting engineering means hoisting a component or structure prefabricated at a factory or a construction site by using hoisting equipment, and the hoisting equipment is commonly used for hoisting structures in different field environments, such as a tower crane, a mast crane, a crawler crane, an automobile crane, a floating crane and the like, by lifting, turning and luffing to enable a heavy object to reach any point space position in an operation range. The factory often uses lifting device to remove large-scale work piece, brings very big facility.

However, the fixture on the hanging seat is easy to deviate in the moving process, the workpiece is not easy to clamp accurately, the hoisting efficiency is low, the gravity center of the hanging seat is easy to deviate in the heavy workpiece moving process, the situation that the hanging seat is out of balance in the hoisting operation process can be caused, and therefore the hoisting process of the equipment on the workpiece is not stable enough.

Disclosure of Invention

Aiming at the defects or shortcomings of the prior art, the invention provides the fixed hoisting equipment, which can ensure that the hoisting efficiency of the equipment to the workpiece is higher, and the hoisting process of the equipment to the workpiece is more stable.

The utility model provides a fixed lifting device, includes fixing base, turns to motor, steering mechanism and receive and release mechanism, fixedly connected with turns to the motor on the fixing base, steering mechanism sets up on turning to the motor, receive and release mechanism sets up on steering mechanism.

As the improvement of above-mentioned scheme, steering mechanism is including turning to power shaft, support mobile jib and supporting seat, the output shaft top fixedly connected with that turns to the motor turns to the power shaft, turn to the power shaft and pass the fixing base, turn to power shaft top fixedly connected with support mobile jib, support mobile jib upper portion fixedly connected with supporting seat.

As the improvement of above-mentioned scheme, receive and release mechanism is including servo motor, receive and release power shaft, transmission shaft, drive gear, chain, receive and release wheel, reel, lifting rope and hanging seat, fixedly connected with servo motor at supporting seat top, fixedly connected with receive and release power shaft on servo motor's the output shaft, receive and release power shaft and support mobile jib swivelling connection, be connected with the transmission shaft on the support mobile jib swivelling type, receive and release power shaft and all fixedly connected with drive gear on the transmission shaft, two around having the chain between the drive gear, two drive gear all meshes with the chain, fixedly connected with receive and release wheel on the transmission shaft, receive and release fixedly connected with reel on the reel, the lifting rope walks around receive and release wheel, lifting rope bottom fixedly connected with hanging seat.

As an improvement of the scheme, the hanging seat is of a frame structure.

As the improvement of above-mentioned scheme, still including preventing tilting mechanism, prevent tilting mechanism setting is on supporting the mobile jib, prevent tilting mechanism including rotation axis, rotation gear, wire line wheel, fixed support ring and prevent inclined wire rope, it is connected with two rotation axes to support on the mobile jib, two the rotation axis is the symmetry setting, two all fixedly connected with rotation gear on the rotation axis, two fixedly connected with rotation gear on the transmission shaft, two drive gears on the transmission shaft respectively with two epaxial drive gear engagement, two all fixedly connected with wire line wheel on the rotation axis, hanger top fixedly connected with four fixed support rings, two prevent inclined wire rope wind on the wire line wheel, fixed support ring is connected with the wire rope bottom of preventing inclined.

As an improvement of the scheme, the top of the fixed supporting ring is provided with an annular ring.

As the improvement of above-mentioned scheme, still including anti-sway mechanism, anti-sway mechanism sets up on supporting the mobile jib, anti-sway mechanism is including fixed plate, fixed wheel carrier, rotor, receive and release dish, torsion spring, fixed stop collar and anti-sway wire rope, support the fixed plate of main jib top downside fixedly connected with, four fixed wheel carrier of fixed plate bottom fixedly connected with, four fixed wheel carrier lower part is all rotationally connected with the rotor, four all fixedly connected with receive and release dish on the rotor, receive and release and be connected with torsion spring between dish and the fixed wheel carrier, torsion spring cover is on the rotor, lifting rope lower part fixedly connected with fixed stop collar, four all fixedly connected with anti-sway wire rope on the receive and release dish, anti-sway wire rope winds on receive and release dish, fixed stop collar all is connected with four anti-sway wire rope.

As the improvement of above-mentioned scheme, fixed stop collar includes hollow cylinder pole and establishes the hollow round platform in hollow cylinder pole bottom, hollow cylinder pole and hollow round platform integrated into one piece.

As the improvement of above-mentioned scheme, still including fixed spacing, fixing base top downside fixedly connected with fixed spacing, the lifting rope passes fixed spacing.

The beneficial effects of the invention are as follows:

the operator starts steering motor and servo motor for work piece is cliied to the anchor clamps of hanging seat bottom, then operator adjustment servo motor and steering motor, make the hanging seat can drive the work piece and rotate to suitable angle, then operator adjustment servo motor, the anchor clamps of hanging seat bottom move down and can drive the work piece and move down to suitable position and loosen the work piece, so, receive and release wheel can lead the lifting rope in the hoist and mount process, make lifting rope and hanging seat be difficult for the skew in-process that reciprocates, thereby can make the work piece be more accurately cliied to anchor clamps on the hanging seat, make this equipment higher to the hoist and mount efficiency of work piece.

When the servo motor drives the transmission shaft to rotate, the transmission shaft can drive two rotary gears on the transmission shaft to rotate, so that the hanging seat, the fixed supporting ring and the anti-tilting steel wire rope can downwards move under the action of gravity, the anti-tilting steel wire rope is always in a tight state, so that the unreeling lengths of the four anti-tilting steel wire ropes are kept consistent, the hanging seat is kept in a balanced state in the hoisting operation process, and the hoisting process of the equipment to a workpiece is more stable.

When the lifting seat drives the lifting rope to move downwards under the action of gravity, the lifting rope can drive the fixed limiting sleeve to move downwards, so that the anti-swing steel wire rope limits the lifting rope and the lifting seat to a certain extent, the lifting rope and the lifting seat are not easy to swing in the lifting process, and the lifting process of the equipment to a workpiece can be further stable.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a schematic perspective view of the winding and unwinding mechanism of the present invention.

Fig. 4 is a schematic perspective view of the anti-tilting mechanism of the present invention.

Fig. 5 is a schematic view of a first perspective structure of the anti-swing mechanism of the present invention.

Fig. 6 is a schematic diagram of a second perspective structure of the anti-swing mechanism of the present invention.

Reference numerals in the figures: 1: fixing base, 2: steering motor, 41: steering power shaft, 42: support boom, 43: support base, 52: servo motor, 53: power shaft, 54: drive shaft, 55: transmission gear, 56: chain, 57: winding and unwinding wheels 571: reel, 58: lifting rope, 59: hanging seat, 61: rotation axis, 62: rotating gear, 63: steel wire wheel, 64: fixed support ring, 65: anti-tilt wire rope, 71: fixing plate, 72: fixed wheel frame, 73: rotating roller, 74: a retractable tray, 75: torsion spring, 76: fixed stop collar, 77: anti-sway wire rope, 8: and fixing a limiting frame.

Description of the embodiments

Standard parts used in the invention can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, and the specific connection modes of the parts adopt conventional means such as mature bolts, rivets, welding, pasting and the like in the prior art, and the detailed description is omitted.

Examples

The fixed hoisting equipment comprises a fixed seat 1, a steering motor 2, a steering mechanism and a winding and unwinding mechanism, wherein the steering motor 2 is connected to the fixed seat 1 through bolts, the steering mechanism is arranged on the steering motor 2, and the winding and unwinding mechanism is arranged on the steering mechanism.

The steering mechanism comprises a steering power shaft 41, a supporting main rod 42 and a supporting seat 43, wherein the top end of an output shaft of the steering motor 2 is connected with the steering power shaft 41 through a bolt, the steering power shaft 41 penetrates through the fixing seat 1, the top end of the steering power shaft 41 is connected with the supporting main rod 42 through a bolt, and the upper part of the supporting main rod 42 is connected with the supporting seat 43 through a bolt.

The winding and unwinding mechanism comprises a servo motor 52, a winding and unwinding power shaft 53, a transmission shaft 54, transmission gears 55, chains 56, winding and unwinding wheels 57, winding and unwinding drums 571, lifting ropes 58 and lifting seats 59, wherein the top of each supporting seat 43 is connected with the servo motor 52 through bolts, the winding and unwinding power shaft 53 is connected to an output shaft of each servo motor 52 through bolts, the winding and unwinding power shaft 53 is rotatably connected with each supporting main rod 42, the transmission shafts 54 are rotatably connected to the supporting main rods 42, the transmission gears 55 are connected to the winding and unwinding power shafts 53 and the transmission shafts 54 through flat keys, the chains 56 are wound between the two transmission gears 55, the two transmission gears 55 are meshed with the chains 56, the winding and unwinding wheels 57 are connected to the transmission shafts 54 through bolts, the lifting ropes 58 are fixedly connected to the winding and unwinding drums 571, the lifting ropes 58 wind the winding and unwinding wheels 57, the bottom ends of the lifting ropes 58 are fixedly connected with the lifting seats 59, and the lifting seats 59 are of a frame structure.

Firstly, an operator installs a clamp at the bottom of a hanging seat 59, then starts a steering motor 2, an output shaft of the steering motor 2 drives a steering power shaft 41 to rotate, the steering power shaft 41 rotates to drive a supporting main rod 42 to rotate, the supporting main rod 42 rotates to drive a supporting seat 43, a servo motor 52, a winding and unwinding power shaft 53, a transmission shaft 54, a transmission gear 55, a chain 56, a winding and unwinding wheel 57, a winding and unwinding reel 571, a hanging rope 58 and the hanging seat 59 all rotate to proper angles, so that the hanging seat 59 is positioned right above a workpiece, then the operator starts the servo motor 52, an output shaft of the servo motor 52 drives the winding and unwinding power shaft 53 to rotate, the winding and unwinding power shaft 53 drives one of the transmission gear 55 and the winding and unwinding reel 571 to unwind the hanging rope 58, meanwhile, one of the transmission gears 55 rotates to drive the chain 56, the chain 56 rotates to drive the other transmission gear 55 to rotate, the other transmission gear 55 rotates to drive the transmission shaft 54 to rotate, the transmission shaft 54 rotates to drive the winding and unwinding wheel 57 to rotate, the winding and unwinding wheel 57 rotates to guide the lifting rope 58, the lifting seat 59 moves downwards under the action of gravity, the lifting seat 59 moves downwards to drive the lifting rope 58 to move downwards, the clamp at the bottom of the lifting seat 59 contacts with a workpiece, the clamp at the bottom of the lifting seat 59 clamps the workpiece, then an operator adjusts the output shaft of the servo motor 52 to rotate reversely, the output shaft of the servo motor 52 rotates reversely to drive the winding and unwinding power shaft 53, the transmission shaft 54, the transmission gear 55, the chain 56, the winding and unwinding wheel 57 and the unwinding reel 571 to rotate reversely to wind the lifting rope 58, the lifting rope 58 moves upwards to a proper position through the winding and unwinding wheel 57, the operator adjusts the output shaft of the steering motor 2 to rotate, the rotation of the output shaft of the steering motor 2 drives the supporting main rod 42, the supporting seat 43, the servo motor 52, the winding and unwinding power shaft 53, the transmission shaft 54, the transmission gear 55, the chain 56, the winding and unwinding wheel 57, the unwinding disc 571, the lifting rope 58 and the lifting seat 59 to rotate to a proper angle, the rotation of the lifting seat 59 drives the workpiece to rotate to a proper angle, finally the output shaft of the servo motor 52 is regulated by an operator to rotate again, the rotation of the output shaft of the servo motor 52 drives the winding and unwinding power shaft 53, the transmission shaft 54, the transmission gear 55, the chain 56, the winding and unwinding wheel 57 and the unwinding disc 571 to rotate, the winding and unwinding disc 571 rotates to unwind the lifting rope 58, the lifting seat 59 and the clamps at the bottom of the lifting seat 59 move downwards under the action of gravity, the clamps at the bottom of the lifting seat 59 move downwards to a proper position, the workpieces are not clamped by the clamps at the bottom of the lifting seat 59, thereby the lifting movement of the workpiece is completed, the operator adjusts the output shaft of the servo motor 52 to reversely rotate again, the output shaft of the servo motor 52 reversely rotates to drive the winding and unwinding power shaft 53, the transmission shaft 54, the transmission gear 55, the chain 56, the winding and unwinding wheel 57 and the winding and unwinding wheel 571 to reversely rotate, the winding and unwinding wheel 571 rotates to wind the lifting rope 58, the lifting rope 58 moves upwards to reset to drive the lifting seat 59 to move upwards to reset, then the operator adjusts the output shaft of the steering motor 2 to rotate, the output shaft of the steering motor 2 rotates to drive the supporting seat 43, the servo motor 52, the winding and unwinding power shaft 53, the transmission shaft 54, the transmission gear 55, the chain 56, the winding and unwinding wheel 57, the winding and unwinding wheel 571, the lifting rope 58 and the lifting seat 59 to reset, so the winding and unwinding wheel 57 can guide the lifting rope 58 in the lifting process, the lifting rope 58 and the lifting seat 59 are not easy to deviate in the up-down moving process, therefore, the workpiece can be clamped by the clamp on the hanging seat 59 more accurately, and the hoisting efficiency of the equipment on the workpiece is higher.

Examples

On the basis of embodiment 1, as shown in fig. 4, the anti-tilting mechanism is further included, the anti-tilting mechanism is disposed on the supporting main rod 42, the anti-tilting mechanism includes a rotating shaft 61, a rotating gear 62, wire wheels 63, a fixed supporting ring 64 and anti-tilting wire ropes 65, two rotating shafts 61 are rotatably connected to the supporting main rod 42, two rotating shafts 61 are symmetrically disposed, two rotating shafts 61 are connected to one rotating gear 62 through a flat key, two rotating gears 62 are connected to the driving shaft 54 through a flat key, two driving gears 55 on the driving shaft 54 are respectively meshed with the driving gears 55 on the two rotating shafts 61, two rotating shafts 61 are connected to wire wheels 63 through bolts, four fixed supporting rings 64 are connected to the top of the hanging seat 59 through bolts, annular rings are disposed on the top of the fixed supporting rings 64, two anti-tilting wire ropes 65 are fixedly connected to the two wire wheels 63, and the anti-tilting wire ropes 65 are wound on the wire wheels 63, and the fixed supporting rings 65 are connected to the bottom of the wire ropes 65.

When the servo motor 52 drives the transmission shaft 54 to rotate, the transmission shaft 54 drives the two rotary gears 62 on the transmission shaft 54 to rotate, the two rotary gears 62 on the transmission shaft 54 drive the rotary gears 62 on the two rotary shafts 61 to rotate, the rotary gears 62 on the rotary shafts 61 drive the rotary shafts 61 to rotate, the rotary shafts 61 drive the steel wire wheels 63 to rotate, the steel wire wheels 63 rotate and unwind the two anti-tilting steel wire ropes 65, so that the lifting seat 59, the fixed supporting ring 64 and the anti-tilting steel wire ropes 65 can move downwards under the action of gravity, the anti-tilting steel wire ropes 65 are always in a tight state, so that the unwinding lengths of the four anti-tilting steel wire ropes 65 are kept consistent, the lifting seat 59 can maintain a balanced state in the lifting operation process, the workpiece lifting process of the device is more stable, when the servo motor 52 drives the transmission shaft 54 to rotate reversely, the transmission shaft 54, the rotary gears 62, the rotary shafts 61 and the steel wire wheels 63 rotate reversely, the anti-tilting steel wire wheels 63 rotate reversely, the winding anti-tilting steel wire ropes 65 can move downwards, the anti-tilting steel wire ropes 65 are enabled to be reset, the anti-tilting steel wire ropes 65 are enabled to move upwards, and the anti-tilting supporting ring 64 can reset, and the anti-tilting steel wire ropes 65 are enabled to move upwards, and the anti-tilting steel wire ropes are enabled to reset to move upwards, and the lifting seat 59 is enabled to reset.

Examples

On the basis of embodiment 2, as shown in fig. 4-6, the anti-swing mechanism is further included, the anti-swing mechanism is disposed on the supporting main rod 42, the anti-swing mechanism includes a fixed plate 71, a fixed wheel frame 72, a rotating roller 73, a winding and unwinding disc 74, a torsion spring 75, a fixed limit sleeve 76 and an anti-swing steel wire rope 77, the lower side of the top of the supporting main rod 42 is connected with the fixed plate 71 through bolts, the bottom of the fixed plate 71 is connected with four fixed wheel frames 72 through bolts, the lower parts of the four fixed wheel frames 72 are all rotationally connected with the rotating roller 73, the four rotating roller frames 73 are all connected with the winding and unwinding disc 74 through bolts, the torsion spring 75 is sleeved on the rotating roller 73, the lower part of the hanging wire rope 58 is fixedly connected with the fixed limit sleeve 76, the fixed limit sleeve 76 includes a hollow round table and a hollow round table arranged at the bottom of the hollow round column rod, the four winding and unwinding disc 74 are fixedly connected with the anti-swing steel wire rope 77, and the four anti-swing steel wire ropes are all fixedly connected with the winding and unwinding disc 77.

When the lifting seat 59 drives the lifting rope 58 to move downwards under the action of gravity, the lifting rope 58 can drive the fixed limiting sleeve 76 to move downwards, the fixed limiting sleeve 76 can drive the four anti-swing steel wire ropes 77 to move downwards, the anti-swing steel wire ropes 77 can drive the winding and unwinding disc 74 to rotate, the winding and unwinding disc 74 unwinds the anti-swing steel wire ropes 77, the torsion spring 75 can be twisted, and therefore the lifting rope 58 and the lifting seat 59 are limited to a certain extent, so that the lifting rope 58 and the lifting seat 59 are not easy to swing in the lifting process, the lifting process of the device on a workpiece can be further stable, when the winding and unwinding disc 571 winds the lifting rope 58, the lifting rope 58 can drive the four anti-swing steel wire ropes 77 to move upwards, the fixed wheel frame 72 can wind the anti-swing steel wire ropes 77, and the torsion spring 75 can reset, so that the winding and unwinding disc 74 winds the swing steel wire ropes.

Examples

On the basis of embodiment 3, as shown in fig. 5, the fixing seat further comprises a fixing limit frame 8, the fixing limit frame 8 is connected to the lower side of the top of the fixing seat 1 through bolts, and the lifting rope 58 penetrates through the fixing limit frame 8.

The fixed limiting frame 8 can conduct guiding limiting on the lifting rope 58, so that the lifting rope 58 is not easy to deviate in the lifting process, and the clamp on the lifting seat 59 can clamp a workpiece more accurately.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The fixed hoisting equipment is characterized by comprising a fixed seat (1), a steering motor (2), a steering mechanism and a winding and unwinding mechanism, wherein the steering motor (2) is fixedly connected to the fixed seat (1), the steering mechanism is arranged on the steering motor (2), and the winding and unwinding mechanism is arranged on the steering mechanism;

the steering mechanism comprises a steering power shaft (41), a supporting main rod (42) and a supporting seat (43), wherein the steering power shaft (41) is fixedly connected to the top end of an output shaft of the steering motor (2), the steering power shaft (41) penetrates through the fixing seat (1), the supporting main rod (42) is fixedly connected to the top end of the steering power shaft (41), and the supporting seat (43) is fixedly connected to the upper portion of the supporting main rod (42).

2. The fixed hoisting device of claim 1, wherein the winding and unwinding mechanism comprises a servo motor (52), a winding and unwinding power shaft (53), a transmission shaft (54), a transmission gear (55), a chain (56), winding and unwinding wheels (57), a winding disc (571), a hoisting rope (58) and a hoisting seat (59), the servo motor (52) is fixedly connected to the top of the supporting seat (43), the winding and unwinding power shaft (53) is fixedly connected to an output shaft of the servo motor (52), the winding and unwinding power shaft (53) is rotatably connected with a supporting main rod (42), a transmission shaft (54) is rotatably connected to the supporting main rod (42), the transmission gears (55) are fixedly connected to the winding and unwinding power shaft (53) and the transmission shaft (54), the chain (56) is wound between the two transmission gears (55), the two transmission gears (55) are meshed with the chain (56), the winding and unwinding wheels (57) are fixedly connected to the transmission shaft (54), the winding and unwinding wheels (53) are fixedly connected to the winding disc (58), and the hoisting rope (58) is fixedly connected to the winding and unwinding disc (58).

3. A stationary hoisting device as claimed in claim 2, characterized in that the hoisting base (59) is of a frame construction.

4. The fixed hoisting device as claimed in claim 2, further comprising an anti-tilting mechanism, wherein the anti-tilting mechanism is arranged on the support main rod (42), the anti-tilting mechanism comprises a rotating shaft (61), rotating gears (62), wire wheels (63), fixed support rings (64) and anti-tilting wire ropes (65), two rotating shafts (61) are rotatably connected to the support main rod (42), two rotating shafts (61) are symmetrically arranged, two rotating gears (62) are fixedly connected to the rotating shafts (61), two rotating gears (62) are fixedly connected to the transmission shaft (54), two transmission gears (55) on the transmission shaft (54) are respectively meshed with the transmission gears (55) on the two rotating shafts (61), the wire wheels (63) are fixedly connected to the two rotating shafts (61), four fixed support rings (64) are fixedly connected to the top of the hoisting base (59), two anti-tilting wire ropes (65) are fixedly connected to the two wire wheels (63), and the wire ropes (65) are fixedly connected to the bottom of the wire ropes (65).

5. A stationary hoisting device as claimed in claim 4, characterized in that the stationary support ring (64) is provided with an annular ring at the top.

6. The fixed hoisting device as claimed in claim 4, further comprising an anti-sway mechanism, wherein the anti-sway mechanism is arranged on the supporting main rod (42), the anti-sway mechanism comprises a fixed plate (71), a fixed wheel frame (72), a rotating roller (73), a winding and unwinding disc (74), a torsion spring (75), a fixed limit sleeve (76) and an anti-sway steel wire rope (77), the fixed plate (71) is fixedly connected to the lower side of the top of the supporting main rod (42), four fixed wheel frames (72) are fixedly connected to the bottom of the fixed plate (71), rotating rollers (73) are all rotationally connected to the lower parts of the four fixed wheel frames (72), winding and unwinding discs (74) are all fixedly connected to the rotating roller frames (73), torsion springs (75) are connected between the winding and unwinding discs (74) and the fixed wheel frames (72), the fixed limit sleeve (76) is fixedly connected to the lower part of the swinging rope (58), the four winding and unwinding discs (74) are fixedly connected to the anti-sway steel wire rope (77).

7. A fixed lifting device according to claim 6, wherein the fixed limiting sleeve (76) comprises a hollow cylindrical rod and a hollow round table arranged at the bottom of the hollow cylindrical rod, and the hollow cylindrical rod and the hollow round table are integrally formed.

8. The fixed hoisting device according to claim 6, further comprising a fixed limit frame (8), wherein the fixed limit frame (8) is fixedly connected to the lower side of the top of the fixed seat (1), and the hoisting rope (58) passes through the fixed limit frame (8).