CN216687243U

CN216687243U - Novel overload device for tower crane

Info

Publication number: CN216687243U
Application number: CN202220259219.3U
Authority: CN
Inventors: 陈飞
Original assignee: Zoomlion Construction Machinery Jiangsu Co ltd
Current assignee: Zoomlion Construction Machinery Jiangsu Co ltd
Priority date: 2022-02-07
Filing date: 2022-02-07
Publication date: 2022-06-07
Anticipated expiration: 2032-02-07

Abstract

The utility model relates to the technical field of overload devices, in particular to a novel overload device for a tower crane, which comprises a crane body, wherein a second supporting column is arranged at the lower end of the crane body, a first supporting column is arranged at the lower end of the second supporting column, a protection device is arranged at the lower end of the crane body, the protection device comprises a damping component and an overload component, and the overload component is arranged above the damping component, and the novel overload device has the beneficial effects that: when the crane hoists a heavy object under the condition of overload, the second supporting column can slide up and down on the upper end of the first supporting column, the effect of buffering and damping is achieved, the crane is prevented from being directly damaged, the telescopic driving wheel can be pressed downwards by the rotating device for rotating the crane, the fixed driving wheel and the telescopic driving wheel are enabled to share the rotation of the crane, the force of the heavy object is conveniently dispersed, the bearing driving wheel set can not be directly damaged due to the overload, and the service life of the driving wheel set is prolonged.

Description

Novel overload device for tower crane

Technical Field

The utility model relates to the technical field of overload devices, in particular to a novel overload device for a tower crane.

Background

The gantry crane is a variant of a bridge crane and is also called a gantry crane. The loading and unloading device is mainly used for loading and unloading outdoor goods yards, stock yards and bulk goods. The metal structure of the device is like a square frame, two support legs are arranged under a bearing main beam, the device can directly walk on a track on the ground, and overhanging cantilever beams can be arranged at the two ends of the main beam. The portal crane has the characteristics of high site utilization rate, large operation range, wide application range, strong universality and the like, and is widely used in port goods yards.

The lifting device is an extremely important component in the door type crane, the lifting device mainly achieves a lifting function through the pulley block, the lifting device can ensure the safety of a lifted heavy object in the lifting process, the heavy object cannot fall off, and the heavy object cannot be irreversibly damaged to the self structure due to overload as far as possible. However, the existing hoisting device cannot realize overload self-protection, so that when the hoisting device runs under overload, a great potential safety hazard exists, the hoisting device is easily damaged, the maintenance is extremely difficult, and the work of the crane is influenced.

Therefore, it is necessary to design a new overload device for a tower crane.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a novel overload device for a tower crane, which solves the problem that the conventional hoisting device is an extremely important component in a portal crane through a protection component and an overload component, realizes the hoisting function through a pulley block, can ensure the safety of a hoisted heavy object in the lifting process, cannot fall off and cannot irreversibly damage the structure of the hoisting device due to overload as much as possible. However, the existing hoisting device cannot realize overload self-protection, so that great potential safety hazards exist during overload operation, the hoisting device is easy to damage, the maintenance is extremely difficult, the operation of the crane is influenced, and the like.

In order to achieve the above purpose, the utility model provides the following technical scheme: the novel overload device for the tower crane comprises a crane body, wherein a second supporting column is arranged at the lower end of the crane body, a first supporting column is arranged at the lower end of the second supporting column, and a protective device is arranged at the lower end of the crane body;

the protection device comprises a shock absorption assembly and an overload assembly, wherein the overload assembly is arranged above the shock absorption assembly.

Preferably, damper includes a first telescopic cylinder, a first telescopic cylinder fixed connection is at the middle part of first support column, the upper end sliding connection of a first telescopic cylinder has a first telescopic column, the one end fixed connection of a first telescopic column is at the lower extreme of second support column.

Preferably, the upper end of first support column is even fixedly connected with first damping spring all around, the even fixed connection of first damping spring is at the lower extreme of second support column, first flexible post sets up at first damping spring's middle part.

Preferably, the overload component comprises a second telescopic cylinder, the second telescopic cylinder is fixedly connected to the middle of the second supporting column, the upper end of the second telescopic cylinder is slidably connected with a second telescopic column, and the second telescopic column is fixedly connected to the lower end of the crane body.

Preferably, the second telescopic column is slidably connected to the middle of the second supporting column, first U-shaped plates are uniformly and fixedly connected to the periphery of the upper end of the second supporting column, and first fixing shafts are fixedly connected to the inner walls of the first U-shaped plates.

Preferably, the side wall of the first fixed shaft is rotatably connected with a fixed driving wheel, rolling grooves are formed in the lower end of the crane body, the rolling grooves are circular, and the fixed driving wheel is rotatably connected to the middle of each rolling groove.

Preferably, the installation cavity has evenly been seted up all around to the upper end of second support column, the installation cavity sets up between two first U-shaped plates, the mid-mounting of installation cavity has second damping spring, second damping spring's upper end fixedly connected with second U-shaped plate.

Preferably, the inner wall fixedly connected with second fixed axle of second U-shaped board, the lateral wall of second fixed axle rotates and is connected with flexible driving wheel, flexible driving wheel rotates and connects in the middle part in roll groove.

The beneficial effects of the utility model are: when the crane hoists a heavy object under the condition of overload, the second supporting column can slide up and down on the upper end of the first supporting column, the effect of buffering and damping is achieved, the crane is prevented from being directly damaged, the telescopic driving wheel can be pressed downwards by the rotating device for rotating the crane, the fixed driving wheel and the telescopic driving wheel are enabled to share the rotation of the crane, the force of the heavy object is conveniently dispersed, the bearing driving wheel set can not be directly damaged due to the overload, and the service life of the driving wheel set is prolonged.

Drawings

Fig. 1 is a front view of a novel overload device for a tower crane provided by the utility model;

FIG. 2 is a cross-sectional view of the novel overload device for the tower crane provided by the utility model;

FIG. 3 is an enlarged view of the structure of area A of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure of area B in FIG. 2 according to the present invention;

fig. 5 is a three-dimensional schematic view of a telescopic moving wheel of the novel overload device for the tower crane provided by the utility model.

In the figure: 1. a crane body; 2. a first U-shaped plate; 3. a first telescopic column; 4. a first support column; 5. A first damping spring; 6. a second support column; 7. a first fixed shaft; 8. fixing a driving wheel; 9. a second telescopic column; 10. a second telescopic cylinder; 11. a first telescopic cylinder; 12. a rolling groove; 13. a second U-shaped plate; 14. a telescopic driving wheel; 15. a second fixed shaft; 16. a second damping spring; 17. and (7) installing a cavity.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that they are presented herein only to illustrate and explain the present invention and not to limit the present invention.

Referring to the attached drawings 1-5, the novel overload device for the tower crane provided by the utility model comprises a crane body 1, wherein the crane body 1 is a product of the prior patent technology, a second support column 6 is arranged at the lower end of the crane body 1, the second support column 6 can play a role in supporting and fixing and is made of metal, a first support column 4 is arranged at the lower end of the second support column 6, the first support column 4 can play a role in supporting and fixing and is made of metal, and a protection device is arranged at the lower end of the crane body 1; the protection device comprises a shock absorption assembly and an overload assembly, the overload assembly is arranged above the shock absorption assembly, the shock absorption assembly comprises a first telescopic cylinder 11, the first telescopic cylinder 11 is convenient for the first telescopic column 3 to slide up and down and is made of metal, the first telescopic cylinder 11 is fixedly connected with the middle part of a first supporting column 4, the upper end of the first telescopic cylinder 11 is connected with the first telescopic column 3 in a sliding way, the first telescopic column 3 can play a role in sliding and connecting and is made of metal, one end of the first telescopic column 3 is fixedly connected with the lower end of a second supporting column 6, first shock absorption springs 5 are uniformly and fixedly connected with the periphery of the upper end of the first supporting column 4, the first shock absorption springs 5 can play a role in shock absorption and buffering, the protection device is a product in the prior art of the open patent, the first shock absorption springs 5 are uniformly and fixedly connected with the lower end of the second supporting column 6, the first telescopic column 3 is arranged in the middle part of the first shock absorption springs 5, the overload assembly comprises a second telescopic cylinder 10, the second telescopic cylinder 10 is convenient for the second telescopic column 9 to slide up and down and is made of metal, the second telescopic cylinder 10 of the telescopic column is fixedly connected to the middle part of a second supporting column 6, the upper end of the second telescopic cylinder 10 is connected with the second telescopic column 9 in a sliding manner, the second telescopic column 9 has the functions of sliding and connecting and is made of metal, the second telescopic column 9 is fixedly connected to the lower end of the crane body 1, the second telescopic column 9 is connected to the middle part of the second supporting column 6 in a sliding manner, the periphery of the upper end of the second supporting column 6 is uniformly and fixedly connected with a first U-shaped plate 2, the first U-shaped plate 2 can play a role of supporting and protecting and is made of metal, the inner wall of the first U-shaped plate 2 is fixedly connected with a first fixing shaft 7, the first fixing shaft 7 can play a role of connecting and fixing and is made of metal, the side wall of the first fixing shaft 7 is rotatably connected with a fixing driving wheel 8, the fixed movable wheel 8 can play a role in rotating and sliding and is made of metal, the lower end of the crane body 1 is provided with a rolling groove 12, the rolling groove 12 facilitates the rotation and the guiding of the fixed movable wheel 8, the rolling grooves 12 are annular, the fixed movable wheel 8 is rotatably connected to the middle of the rolling groove 12, the periphery of the upper end of the second supporting column 6 is uniformly provided with a mounting cavity 17, the mounting cavity 17 facilitates the vertical sliding of a second damping spring 16 and a second U-shaped plate 13, the mounting cavity 17 is arranged between the two first U-shaped plates 2, the middle of the mounting cavity 17 is provided with the second damping spring 16, the second damping spring 16 can play a role in damping and buffering, the fixed movable wheel is an existing product in the patent technology, the upper end of the second damping spring 16 is fixedly connected with the second U-shaped plate 13, the second U-shaped plate 13 can play a role in sliding and supporting and is made of metal, the inner wall of the second U-shaped plate 13 is fixedly connected with a second fixed shaft 15, the second fixed shaft 15 can play a role in connection and fixation and is made of metal, the side wall of the second fixed shaft 15 is rotatably connected with a telescopic driving wheel 14, the telescopic driving wheel 14 can play a role in rolling and sliding and is made of metal, and the telescopic driving wheel 14 is rotatably connected to the middle part of the rolling groove 12;

the using process of the utility model is as follows: when a person skilled in the art uses the crane body 1 to lift a heavy object, the second supporting column 6 slides up and down on the upper end of the first telescopic cylinder 11 through the first telescopic column 3 due to the heavy object, then the first damping spring 5 around starts to be pressed, then the second supporting column 6 damps and buffers on the upper end of the first supporting column 4, the first damping spring 5 plays a main role, the crane body 1 slides up and down on the upper end of the second telescopic cylinder 10 through the second telescopic column 9, the crane body 1 starts to press the telescopic driving wheels 14 to slide down and starts to press the second damping spring 16, so that the telescopic driving wheels 14 and the fixed driving wheels 8 are on the same horizontal line, an overload protection effect is achieved, the telescopic driving wheels 14 are prevented from being directly damaged due to the heavy object, when the crane body 1 rotates, the fixed driving wheel 8 and the telescopic driving wheel 14 rotate together to slide, so that the crane body 1 can rotate conveniently.

The above is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.

Claims

1. Novel overload device for tower crane, including hoist body (1), the lower extreme of hoist body (1) is provided with second support column (6), the lower extreme of second support column (6) is provided with first support column (4), its characterized in that: the lower end of the crane body (1) is provided with a protective device;

2. The novel overload device for the tower crane according to claim 1, wherein: damping component includes first flexible section of thick bamboo (11), first flexible section of thick bamboo (11) fixed connection is at the middle part of first support column (4), the upper end sliding connection of first flexible section of thick bamboo (11) has first flexible post (3), the one end fixed connection of first flexible post (3) is at the lower extreme of second support column (6).

3. The novel overload device for the tower crane according to claim 2, wherein: the upper end of first support column (4) is first damping spring (5) of even fixedly connected with all around, the even fixed connection of first damping spring (5) is at the lower extreme of second support column (6), first flexible post (3) sets up the middle part at first damping spring (5).

4. The novel overload device for the tower crane according to claim 3, wherein: the overload component comprises a second telescopic cylinder (10), the second telescopic cylinder (10) is fixedly connected to the middle of the second support column (6), the upper end of the second telescopic cylinder (10) is slidably connected with a second telescopic column (9), and the second telescopic column (9) is fixedly connected to the lower end of the crane body (1).

5. The novel overload device for the tower crane according to claim 4, wherein: the utility model discloses a flexible support column of second, including the flexible post of second (9) sliding connection at the middle part of second support column (6), first U-shaped plate of even fixedly connected with (2) all around on the upper end of second support column (6), the first fixed axle of inner wall fixedly connected with (7) of first U-shaped plate (2).

6. The novel overload device for the tower crane according to claim 5, wherein: the lateral wall of first fixed axle (7) rotates and is connected with fixed driving wheel (8), roll groove (12) have been seted up to the lower extreme of hoist body (1), the quantity in roll groove (12) is the ring form, fixed driving wheel (8) rotate the middle part of connecting in roll groove (12).

7. The novel overload device for the tower crane according to claim 6, wherein: evenly seted up installation cavity (17) around the upper end of second support column (6), installation cavity (17) set up between two first U-shaped plates (2), the mid-mounting of installation cavity (17) has second damping spring (16), the upper end fixedly connected with second U-shaped plate (13) of second damping spring (16).

8. The novel overload device for the tower crane according to claim 7, wherein: the inner wall fixedly connected with second fixed axle (15) of second U-shaped board (13), the lateral wall of second fixed axle (15) rotates and is connected with flexible driving wheel (14), flexible driving wheel (14) rotate to be connected in the middle part of rolling groove (12).