CN114516594A

CN114516594A - Crane

Info

Publication number: CN114516594A
Application number: CN202210259387.7A
Authority: CN
Inventors: 杨明; 李厚宝; 张雷
Original assignee: Vsl Engineering Co ltd
Current assignee: Vsl Engineering Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-05-20

Abstract

The invention belongs to the technical field of construction machinery, and particularly relates to a crane.A base is provided with a vertical column which is vertically arranged, the upper end of the vertical column is connected with a cantilever-shaped extending suspension arm, the suspension arm rotates around the axis of the vertical column, a winch is arranged on the base, a traction rope wound on a winding drum of the winch is led out and then is turned by a turning pulley, and the traction rope is arranged along the vertical column from bottom to top and is arranged along the suspension arm from inside to outside in a downward hanging way at the suspension end of the suspension arm. The base of the crane can be stably installed at the top of the tower barrel and provides a reliable installation platform for the suspension arm, the suspension arm can rotate to the positions above the cable penetrating holes around the stand column, the traction operation of the whole prestressed reinforcement bundle is safely and reliably achieved, the construction efficiency is remarkably improved, and the construction cost is reduced.

Description

Crane

Technical Field

The invention belongs to the technical field of construction machinery, and particularly relates to a crane.

Background

The concrete cylinder body of the wind power tower cylinder is usually hoisted on a construction site after being prefabricated in sections, and after the hoisting is completed, prestressed tendons are circumferentially arranged on the ring cylinder body to apply prestress to the assembled tower cylinder so as to improve the bending resistance of the assembled cylinder body. The prestressed tendons need to be pulled from the bottom of the tower barrel to the top of the assembled barrel by a hoisting machine, each tendon is composed of a plurality of steel strands, the length of each tendon reaches one hundred meters, and the weight of each tendon reaches two tons. The installation space of the top of the assembled cylinder is limited, the large-power winch cannot be reliably fixed to pull the whole prestressed tendon, and the traction of the prestressed tendon is usually realized by adopting the following two modes at present:

1. After the steel strand is arranged on the ground, one end of the large tower crane is hoisted to the top of the assembled cylinder by the large tower crane, so that the occupied large tower crane can influence the overall construction efficiency.

2. The winch is arranged on the top surface of the assembled cylinder body, single steel strands are hoisted in sequence and then are arranged into bundles, 200-300 steel strands need to be hoisted in total, the operation efficiency is low, the whole bundles of the steel strands are not easy to generate, and the phenomenon of steel strand twisting is easy to generate.

Disclosure of Invention

The invention aims to provide a crane which can be reliably fixed at the top end of a tower barrel to realize high-efficiency hoisting of a prestressed anchor cable.

In order to realize the purpose, the invention adopts the technical scheme that: a vertical column is arranged on a base, the upper end of the vertical column is connected with a suspension arm extending in a cantilever shape, the suspension arm rotates around the axis of the vertical column, a winch is arranged on the base, and a traction rope wound on a winding drum of the winch is led out and then is arranged along the vertical column from bottom to top and along the suspension arm from inside to outside in a downward hanging mode at the suspension end of the suspension arm.

Compared with the prior art, the invention has the following technical effects: the base of the crane can be stably installed at the top of the tower barrel and provides a reliable installation platform for the suspension arm, the suspension arm can rotate to the positions above the cable penetrating holes around the stand column, the traction operation of the whole prestressed tendon is safely and reliably realized, the construction efficiency is remarkably improved, and the construction cost is reduced.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a schematic view of embodiment 1 as installed on a concrete tower;

FIG. 3 is a schematic top view of FIG. 2;

FIG. 4 is a schematic top view of the assembled state of embodiment 2;

FIG. 5 is a schematic front view of the split state in example 2;

fig. 6 is a perspective view showing a disassembled state in embodiment 2.

In the figure: 10. the crane comprises a base, 11, a middle seat body, 12, side seat bodies, 13, a main beam, 14, a secondary beam, 21, a stand column, 211, an upper fixed pulley, 212, a lower fixed pulley, 22, a suspension arm, 221, a fixed pulley, 222, a pipe body, 223, a suspension rod, 23, a support, 24, a support, 30, a winch, 31, a traction rope, 32, a reversing wheel, 41, a motor, 42, a gear, 43, a gear ring, 44, a support ring and 45 rollers.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.

Example 1

A vertical column 21 is vertically arranged on a base 10, the upper end of the vertical column 21 is connected with a cantilever-shaped extending suspension arm 22, the suspension arm 22 rotates around the axis of the vertical column 21, a winch 30 is arranged on the base 10, and a traction rope 31 wound on a winding drum of the winch 30 is led out and then is arranged along the vertical column 21 from bottom to top and along the suspension end of the suspension arm 22 from inside to outside in a hanging mode.

As shown in fig. 1-3, the feedthroughs 2 are typically routed around the core of the concrete tower drum body 1. When the crane is used, the base 10 is installed at the top of the concrete tower barrel 1, so that the axis of the upright column 21 is superposed with the axis of the tower barrel 1, the extending length of the suspension arm 22 is consistent with the distance between the reserved cable through hole 2 on the tower barrel 1 and the axis of the tower barrel 1, and the traction rope 31 naturally hangs downwards from the suspension end of the suspension arm 22 and can pass through the cable through hole 2.

In this embodiment, the axis of the upright column 21 coincides with the center of the base 10, so that the coincidence of the axis of the base 10 and the axis of the tower cylinder 1 can be ensured only by ensuring the coincidence of the axis of the base 10 and the axis of the tower cylinder 1 when the crane is installed, the length of the suspension arm 22 does not need to be adjusted when the crane is used, and the suspension arm 22 is driven to rotate to match with the cable penetrating holes 2 for the traction and hoisting of the cable body.

The traction rope 31 is provided with traction force by the winch 30, in order to ensure the reliable connection between the winch 30 and the base 10 and enable the base 10 to be more balanced in stress when pulling a rope body, in the embodiment, the support 23 is arranged in the middle of the base 10, the stand column 21 is fixedly installed at the top of the support 23, the winch 30 is located beside the support 23, the traction rope 31 is led out from a winding reel of the winch 30 and sequentially extends along the vertical direction of the stand column 21 and the rod length direction of the suspension arm 22 and bypasses the fixed pulley 221 at the suspension end of the suspension arm 22 to hang downwards. The pulling rope 31 may be attached to the outside of the column 21, and when the boom 22 rotates, the pulling rope 31 will be twisted or deflected around the circumference of the column 21, causing damage to the rope of the pulling rope 31. Therefore, in this embodiment, the column 21 is a hollow tubular column, the upper and lower ends of the column are respectively provided with the upper and lower

fixed pulleys

211, 212, and the traction rope 31 passes through the tube hole of the column 21 and sequentially passes through the lower fixed pulley 212 and the upper fixed pulley 211 to reach the fixed pulley 221.

In order to further balance the stress of the base 10, as shown in fig. 2 and 3, a reversing wheel 32 is arranged on the base 10, the reversing wheel 32 and the winch 30 are symmetrically arranged at the side of the lower end of the upright post 21, and the traction rope 31 sequentially passes around the reversing wheel 32, the lower fixed pulley 212 and the upper fixed pulley 211 to reach the fixed pulley 221.

In order to realize the rotating fit between the boom 22 and the upright 21, in this embodiment, a vertically arranged pipe body 222 is connected to one end of the boom 22, a lower section of the pipe body 222 forms a plug-in type rotating fit with an upper section of the upright 21, and a driving unit is disposed between the boom 22 and the upright 21 to drive the boom 22 and the upright 21 to rotate relatively. As shown in fig. 2 in particular, the boom 22 is connected with a support 24 in a downwardly suspended manner, and the drive unit is arranged on the support 24. The support 24 is connected to the lower end of a boom 223 suspended downward from the middle of the boom 22. In this embodiment, two suspension rods 223 are provided to connect the support 24 and the suspension arm 22, the suspension rod 223 is vertically disposed on the side of the support 24 adjacent to the upright 21, and the suspension rod 223 is obliquely suspended from top to bottom toward the side of the upright 21 on which the support 24 is disposed. The driving unit comprises a motor 41, a support ring 44 is sleeved on the upright post 21, a roller 45 is correspondingly arranged on the support 24, and the roller 45 and the support ring 44 form rolling fit. The motor 41 drives the roller 45 to roll around the surface of the support ring 44, so as to drive the boom 22 to rotate around the upright 21.

In order to prevent the traction rope 31 from being twisted when the boom 22 is rotated, the upper fixed pulley 211 is connected to the upper end of the pipe body 222 and rotated in synchronization with the pipe body 222, and the centers of the upper fixed pulley 211 and the lower fixed pulley 212 are horizontal and parallel to each other and perpendicular to the longitudinal direction of the boom 22.

As shown in fig. 3, the base 10 is polygonal plate-shaped as a whole, and includes a main beam 13 extending outward from two ends of the middle part and connected to the tower tube 1, a secondary beam 14 connected to the main beam 13 and extending outward and connected to the tower tube 1, and the main beam 13 and the secondary beam 14 are arranged vertically. The two ends of the main beam 13 are respectively connected with the tower tube 1, and in this embodiment, the central connecting line of the upright column 21, the winch 30 and the reversing wheel 32 is parallel to the main beam 13 and is located between the two main beams 13, so that the reliability of the crane structure can be further enhanced.

Example 2

The difference between the present embodiment and embodiment 1 is that the base 10 is formed by combining a plurality of detachably connected base bodies, which facilitates transportation of the crane. The winch 30, the bracket 23 and the reversing wheel 32 are fixedly arranged on the same base body. Specifically, as shown in fig. 4-6, the base 10 includes a middle base body 11 integrally formed in a strip plate shape, the side base bodies 12 are symmetrically disposed on both sides of the middle base body 11, and the winch 30, the bracket 23, and the steering wheel 32 are fixedly mounted on the middle base body 11, so that the middle base body 11 and the two side base bodies 12 are separated during transportation, as shown in fig. 5, and if the transportation height is limited, the upright posts 21 and the bracket 23 can be further separated. In this embodiment, as shown in fig. 6, the two trapezoidal side seat bodies 12 are symmetrically disposed on two sides of the middle seat body 11, and the whole base 10 is in the shape of a regular polygon plate.

The middle base body 11 comprises a main beam 13, two ends of the main beam extend outwards to be connected with the tower barrel body 1, the inner side of the lateral base body 12 is connected with the middle base body 11, the outer side of the lateral base body is connected with the tower barrel body 1 through a secondary beam 14 extending outwards, the main beam 13 and the secondary beam 14 are arranged perpendicularly, and reliable connection of the crane and the tower barrel body 1 is guaranteed. An auxiliary beam 15 is arranged between the main beam 13 and the secondary beam 14, and the auxiliary beam 15 is connected with the tower barrel 1 through a support leg 151 arranged on the bottom surface of the end part of the auxiliary beam and can reliably transfer the load of the crane to the tower barrel 1.

In addition, in order to further avoid the rotation of the boom 22 around the upright post 21 when pulling the cable body, in the embodiment, as shown in fig. 5, besides the support ring 44 arranged on the upright post 21 is in rolling fit with the roller 45 on the support 24, the upright post 21 is further provided with the gear ring 43 in a sleeving and fixing manner, the gear ring 43 is meshed with the gear 42 connected to the rotating shaft of the motor 41, the rotating shaft center of the gear ring 43 is overlapped with the tube cores of the upright post 21 and the tube body 222, and the rotating shaft center of the gear 42 is parallel to the rotating shaft center of the gear ring 43. Therefore, vertical support can be provided for the suspension arm 22, and the rotation of the gear 42 can be limited through the rotating shaft of the locking motor 41, so that the relative rotation of the suspension arm 22 and the upright post 21 is limited, and the stable connection of the suspension arm 22 and the upright post 21 during traction operation is ensured.

Claims

1. A loop wheel machine, its characterized in that: the vertical type suspension crane is characterized in that a vertical column (21) is vertically arranged on a base (10), the upper end of the vertical column (21) is connected with a suspension arm (22) extending in a cantilever shape, the suspension arm (22) rotates around the axis of the vertical column (21), a winch (30) is arranged on the base (10), and a traction rope (31) wound on a winding drum of the winch (30) is led out and then is hung downwards along the vertical column (21) from bottom to top and along the suspension end of the suspension arm (22) from inside to outside.

2. The crane of claim 1, wherein: the middle of the base (10) is provided with a support (23), the upright column (21) is fixedly installed at the top of the support (23), the winch (30) is located beside the support (23), the traction rope (31) is led out from a winding reel of the winch (30), and the traction rope extends in the up-and-down direction of the upright column (21) and the rod length direction of the suspension arm (22) in sequence and hangs downwards around a fixed pulley (221) at the suspension end of the suspension arm (22).

3. The crane of claim 2, wherein: the vertical column (21) is a hollow tubular column, an upper fixed pulley (211) and a lower fixed pulley (212) are respectively arranged at the upper end and the lower end of the vertical column, and the traction rope (31) passes through a tube hole of the vertical column (21) and sequentially passes through the lower fixed pulley (212) and the upper fixed pulley (211) to reach the fixed pulley (221).

4. The crane of claim 3, wherein: a reversing wheel (32) is arranged on the base (10), the reversing wheel (32) and the winch (30) are symmetrically arranged on the side of the lower end of the upright post (21), and the traction rope (31) sequentially bypasses the reversing wheel (32), the lower fixed pulley (212) and the upper fixed pulley (211) to reach the fixed pulley (221).

5. The crane of claim 1, wherein: one end of the suspension arm (22) is connected with a pipe body (222) which is vertically arranged, the lower section of the pipe body (222) and the upper section of the upright post (21) form a plug-in type rotation fit, and a driving unit for driving the suspension arm (22) and the upright post (21) to rotate relatively is arranged between the suspension arm (22) and the upright post.

6. The crane of claim 5, wherein: the suspension arm (22) is connected with a support (24) in a downward hanging manner, a driving unit is arranged on the support (24), the driving unit comprises a motor (41), a gear ring (43) which is fixedly arranged on the upright post (21) in a sleeving manner is meshed with a gear (42) connected to a rotating shaft of the motor (41), the axis of the gear ring (43) is overlapped with tube cores of the upright post (21) and the tube body (222), and the rotating axis of the gear (42) is parallel to the rotating axis of the gear ring (43).

7. The crane of claim 6, wherein: a support ring (44) sleeved on the upright post (21) is arranged beside the gear ring (43), a roller (45) is arranged on the support (24), and the roller (45) and the support ring (44) form rolling fit.

8. The crane of claim 7, wherein: the support (24) is connected with the lower end of a suspension rod (223) which is arranged in a downward hanging manner in the middle of the suspension arm (22).

9. The crane according to claim 2, 3 or 5, wherein: the upper fixed pulley (211) is connected to the upper end of the pipe body (222), and the wheel centers of the upper fixed pulley (211) and the lower fixed pulley (212) are horizontal and parallel to each other and are vertical to the length direction of the suspension arm (22).

10. The crane of claim 4, wherein: the base (10) is composed of a plurality of detachably connected base bodies, and the winch (30), the bracket (23) and the reversing wheel (32) are fixedly arranged on the same base body.

11. The crane of claim 10, wherein: the base (10) comprises a middle base body (11) which is integrally in a strip-shaped plate shape, the two sides of the middle base body (11) are symmetrically provided with side base bodies (12), and the winch (30), the bracket (23) and the reversing wheel (32) are fixedly arranged on the middle base body (11).

12. The crane of claim 11, wherein: base (10) wholly is regular polygon platelike, middle part pedestal (11) include both ends outwards extend main beam (13) of being connected with tower section of thick bamboo barrel (1), the inboard and middle part pedestal (11) of lateral part pedestal (12) are connected, the outside is connected with tower section of thick bamboo barrel (1) through secondary beam (14) of outwards extending, main beam (13) are laid with the roof beam body of secondary beam (14) is perpendicular, be equipped with between main beam (13) and secondary beam (14) auxiliary beam (15), auxiliary beam (15) link to each other with tower section of thick bamboo barrel (1) through stabilizer blade (151) that its tip bottom surface set up.