CN219044808U

CN219044808U - Crane with adjustable arm length

Info

Publication number: CN219044808U
Application number: CN202222706415.3U
Authority: CN
Inventors: 许丽芳
Original assignee: Zhangjiagang Hongsheng Mechanical Engineering Technology Co ltd
Current assignee: Zhangjiagang Hongsheng Mechanical Engineering Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-05-19
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses a crane with adjustable arm length, which comprises a base, wherein a support column is fixedly arranged on the upper surface of the base, a first cantilever is fixedly arranged at the top of the support column, and idler wheels are fixedly connected at four corners of the bottom of the base; further comprises: the top of the inner wall of the base is connected with a second rotating rod in a penetrating manner, a left bearing below the inner part of the supporting column is connected with a first rotating rod, and the left side and the right side of the base are fixedly connected with limiting blocks; and the inside of stopper is connected with the threaded rod in a penetrating way, the outside cover of threaded rod is equipped with the movable rod. This crane of adjustable arm length drives the second cantilever through the pneumatic cylinder and removes, can adjust the arm length of crane, and can improve the stability of second cantilever in the removal in-process to move downwards through the movable rod, can increase the holding area of crane, and improve the stability of crane when lifting by crane.

Description

Crane with adjustable arm length

Technical Field

The utility model relates to the technical field of cranes, in particular to a crane with an adjustable arm length.

Background

When large-scale cargoes are carried, a crane is used, and the crane is a hoisting machine for hoisting heavy objects in a certain range and carrying the heavy objects to other places;

the cantilever crane with the publication number of CN202122362734.2 is convenient to support and stable, can achieve the effect of being convenient for assist in moving and transporting through the truckle, uses welding equipment to weld and fix the base, the upright post and the limiting pin, and then screws the first threaded column to enable the support leg to be in contact with the ground, and can enable the cantilever to lift and achieve the effect of supporting and stabilizing through the cooperation among the base, the limiting pin, the reinforcing rib, the first threaded column and the support leg. However, the cantilever crane convenient for supporting and stabilizing still has the following defects in the practical use process:

because the unfolding length of the cantilever on the existing crane is generally fixed and cannot be adjusted, when a heavy object at a far position needs to be lifted, the original cantilever is detached firstly, and then the longer cantilever is replaced and installed, so that the installation and the replacement are time-consuming and labor-consuming, the adaptability is poor, the existing crane is generally unstable in support, and the gravity center is unstable and safety accidents are easy to occur when the crane is used for lifting the heavy object.

Therefore, we propose a crane with adjustable arm length that can solve the above problems well.

Disclosure of Invention

The utility model aims to provide a crane with an adjustable arm length, which aims to solve the problems that the opening length of a cantilever on a crane in the prior market is generally fixed and cannot be adjusted, when a heavy object at a far position needs to be lifted, an original cantilever is detached firstly, and then a longer cantilever is replaced and installed, so that the installation and the replacement are time-consuming and labor-consuming, the adaptability is poor, the existing crane is generally unstable in support, the gravity center is unstable when the crane lifts the heavy object, and safety accidents are easy to occur.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the crane with the arm length adjustable comprises a base, wherein a support column is fixedly arranged on the upper surface of the base, a first cantilever is fixedly arranged at the top of the support column, and idler wheels are fixedly connected at four corners of the bottom of the base;

further comprises:

the top of the inner wall of the base is connected with a second rotating rod in a penetrating manner, a left bearing below the inner part of the supporting column is connected with a first rotating rod, and the left side and the right side of the base are fixedly connected with limiting blocks;

the inner part of the limiting block is connected with a threaded rod in a penetrating way, a movable rod is sleeved on the outer side of the threaded rod, a base plate is fixedly arranged at the bottom of the movable rod, and the right side of the first cantilever is connected with a second cantilever;

a first supporting plate is fixedly connected to one sides of the top parts of the first cantilever and the second cantilever, and a second supporting plate is fixedly arranged on one side of the top part of the first cantilever away from the first supporting plate;

one side of first cantilever and second cantilever bottom fixedly connected with telescopic link, the outside sliding connection of telescopic link has electric block.

Preferably, the outside fixedly connected with leading wheel of first dwang, the inside top rotation of first backup pad is connected with the leading wheel, and twines between the leading wheel and be connected with the haulage rope.

Through adopting above-mentioned technical scheme for rotate through haulage rope pulling leading wheel, make first dwang rotate in succession.

Preferably, one end of the first rotating rod is in transmission connection with the top of the second rotating rod through a bevel gear set, and the bottom of the second rotating rod is in transmission connection with the outer side of the threaded rod through a belt pulley assembly.

Through adopting above-mentioned technical scheme for drive the second dwang through bevel gear group and rotate, drive the threaded rod through belt pulley assembly and rotate.

Preferably, the threaded rod is rotationally connected with the limiting block, and the threaded rod is in threaded connection with the movable rod.

By adopting the technical scheme, the supporting area of the crane is increased, and the stability of the crane during lifting is improved.

Preferably, one side of the first cantilever is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a mounting plate, one side of the mounting plate, which is far away from the hydraulic cylinder, is fixedly provided with a fixing rod, and one end of the fixing rod, which is far away from the mounting plate, is fixedly connected with the left side of the second cantilever.

By adopting the technical scheme, the arm length of the crane can be adjusted.

Preferably, a sliding groove is formed in the right side of the second supporting plate, a sliding block is slidably connected in the middle of the sliding groove, and one side of the sliding block is fixedly connected with one side of the top of the second cantilever through a connecting plate.

By adopting the technical scheme, the stability of the second cantilever in the moving process is increased.

Compared with the prior art, the utility model has the beneficial effects that: this crane of adjustable arm length drives the second cantilever through the pneumatic cylinder and removes, can adjust the arm length of crane, and can improve the stability of second cantilever in the removal in-process to move downwards through the movable rod, can increase the holding area of crane, and improve the stability of crane when lifting by crane, its concrete content is as follows:

(1) When the arm length of the crane needs to be adjusted, the output end of the hydraulic cylinder pushes the mounting plate to move in the first cantilever, so that the second cantilever is driven to move through the fixing rod, meanwhile, the connecting rod moves in the sliding groove through the sliding block, the stability of the second cantilever in the moving process can be improved, and the arm length of the crane can be adjusted;

(2) Be provided with movable rod and threaded rod, when rotating through haulage rope pulling leading wheel for the leading wheel drives first dwang and rotates, then makes first dwang drive the second dwang through bevel gear group and rotates, and the second dwang passes through belt pulley assembly simultaneously and drives the threaded rod and rotate, and then lets the movable rod rise or descend, thereby increases the holding area of hoist, and improves the stability of hoist when lifting.

Drawings

FIG. 1 is a schematic view of the main section structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic view of a partial side cross-sectional structure of the present utility model;

FIG. 4 is a schematic view of the main section of the movable rod of the present utility model;

fig. 5 is an enlarged schematic view of the structure of fig. 1 a according to the present utility model.

In the figure: 1. a base; 2. a support column; 3. a threaded rod; 4. a movable rod; 5. a first rotating lever; 6. a second rotating lever; 7. a first cantilever; 8. a second cantilever; 9. a first support plate; 10. a second support plate; 11. a chute; 12. a slide block; 13. a connecting plate; 14. a hydraulic cylinder; 15. a mounting plate; 16. a fixed rod; 17. a telescopic rod; 18. electric hoist.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the present utility model provides a technical solution: the crane with the arm length adjustable comprises a base 1, wherein a support column 2 is fixedly arranged on the upper surface of the base 1, a first cantilever 7 is fixedly arranged at the top of the support column 2, and idler wheels are fixedly connected at four corners of the bottom of the base 1;

further comprises: the top of the inner wall of the base 1 is connected with a second rotating rod 6 in a penetrating way, a left bearing below the inner part of the supporting column 2 is connected with a first rotating rod 5, the outer side of the first rotating rod 5 is fixedly connected with a guide wheel, the upper part inside the first supporting plate 9 is rotationally connected with the guide wheel, a traction rope is wound between the guide wheels, and the left side and the right side of the base 1 are fixedly connected with limiting blocks; the inside of the limiting block is connected with a threaded rod 3 in a penetrating manner, the outer side of the threaded rod 3 is sleeved with a movable rod 4, the threaded rod 3 is in rotary connection with the limiting block, the threaded rod 3 is in threaded connection with the movable rod 4, a base plate is fixedly arranged at the bottom of the movable rod 4, one end of a first rotating rod 5 is in transmission connection with the top of a second rotating rod 6 through a bevel gear set, the bottom of the second rotating rod 6 is in transmission connection with the outer side of the threaded rod 3 through a belt pulley assembly, and the right side of a first cantilever 7 is connected with a second cantilever 8; a first supporting plate 9 is fixedly connected to one side of the tops of the first cantilever 7 and the second cantilever 8, and a second supporting plate 10 is fixedly arranged on one side of the top of the first cantilever 7 away from the first supporting plate 9; one side fixedly connected with telescopic link 17 of first cantilever 7 and second cantilever 8 bottom, telescopic link 17's outside sliding connection has electric block 18, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, when second cantilever 8 removes, through the leading wheel rotation on haulage rope pulling first backup pad 9 and the first dwang 5, make the leading wheel drive first dwang 5 rotate, first dwang 5 passes through bevel gear group drive second dwang 6 simultaneously, at this moment second dwang 6 rethread belt pulley assembly drives two threaded rods 3 and rotates, then make the movable rod 4 that the cover was established on threaded rod 3 rise or descend, and drive movable rod 4 upper backing plate decline laminating and ground, thereby increase the holding area of hoist, and improve the stability of hoist when lifting.

One side fixedly connected with pneumatic cylinder 14 inside the first cantilever 7, the output fixedly connected with mounting panel 15 of pneumatic cylinder 14, the one side that pneumatic cylinder 14 was kept away from to mounting panel 15 is all fixedly connected with dead lever 16, the one end that dead lever 16 kept away from mounting panel 15 and the left side fixed connection of second cantilever 8, spout 11 has been seted up on the right side of second backup pad 10, the intermediate position sliding connection of spout 11 has slider 12, one side of slider 12 and one side at second cantilever 8 top pass through connecting plate 13 fixed connection, as shown in fig. 1, fig. 2 and fig. 5, when needing to adjust the hoist arm length, start pneumatic cylinder 14, the pneumatic cylinder 14 moves through mounting panel 15 for dead lever 16 drives second cantilever 8 and removes, simultaneously connecting plate 13 passes through slider 12 and reciprocates in spout 11 on second backup pad 10, and then improve the stability of second cantilever 8 in the removal in-process, thereby can adjust the arm length of hoist.

Working principle: when the crane with the adjustable arm length is used, firstly, as shown in fig. 1-5, a worker moves the crane to a designated position through a roller on the crane, then when the crane needs to lift a heavy object at a far position, a hydraulic cylinder 14 is started, the hydraulic cylinder 14 drives a second cantilever 8 to move through a fixed rod 16, at the moment, a connecting plate 13 moves up and down in a chute 11 through a sliding block 12, so that the stability of the second cantilever 8 in the moving process can be increased, a traction rope pulls a guide wheel to rotate and drives a first rotating rod 5 to rotate, then a bevel gear group drives a second rotating rod 6 to rotate, at the moment, the second rotating rod 6 drives a threaded rod 3 to rotate through a belt pulley assembly, and then an upper base plate of a movable rod 4 moves downwards to be attached to the ground, so that the supporting area of the crane is increased, the stability of the crane during lifting is improved, and finally, an electric hoist 18 is started to move above the heavy object, the lifting hook is lowered, and the heavy object is lifted, which is not described in detail in the present specification, and belongs to the prior art known to the person skilled in the art.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The crane with the arm length adjustable comprises a base (1), wherein a support column (2) is fixedly arranged on the upper surface of the base (1), a first cantilever (7) is fixedly arranged at the top of the support column (2), and idler wheels are fixedly connected at four corners of the bottom of the base (1);

characterized by further comprising:

the top of the inner wall of the base (1) is connected with a second rotating rod (6) in a penetrating way, a left bearing below the inside of the supporting column (2) is connected with a first rotating rod (5), and the left side and the right side of the base (1) are fixedly connected with limiting blocks;

the inside of the limiting block is connected with a threaded rod (3) in a penetrating manner, a movable rod (4) is sleeved on the outer side of the threaded rod (3), a base plate is fixedly arranged at the bottom of the movable rod (4), and a second cantilever (8) is connected to the right side of the first cantilever (7);

a first supporting plate (9) is fixedly connected to one side of the tops of the first cantilever (7) and the second cantilever (8), and a second supporting plate (10) is fixedly arranged on one side of the top of the first cantilever (7) away from the first supporting plate (9);

one side of first cantilever (7) and second cantilever (8) bottom fixedly connected with telescopic link (17), the outside sliding connection of telescopic link (17) has electric block (18).

2. An adjustable arm length crane according to claim 1, wherein: the outside fixedly connected with leading wheel of first dwang (5), the inside top rotation of first backup pad (9) is connected with the leading wheel, and twines between the leading wheel and be connected with the haulage rope.

3. An adjustable arm length crane according to claim 1, wherein: one end of the first rotating rod (5) is in transmission connection with the top of the second rotating rod (6) through a bevel gear set, and the bottom of the second rotating rod (6) is in transmission connection with the outer side of the threaded rod (3) through a belt pulley assembly.

4. An adjustable arm length crane according to claim 1, wherein: the threaded rod (3) is rotationally connected with the limiting block, and the threaded rod (3) is in threaded connection with the movable rod (4).

5. An adjustable arm length crane according to claim 1, wherein: one side fixedly connected with pneumatic cylinder (14) inside first cantilever (7), the output fixedly connected with mounting panel (15) of pneumatic cylinder (14), one side that pneumatic cylinder (14) were kept away from to mounting panel (15) is all fixed mounting has dead lever (16), the one end that mounting panel (15) was kept away from to dead lever (16) is fixedly connected with the left side of second cantilever (8).

6. An adjustable arm length crane according to claim 1, wherein: a sliding groove (11) is formed in the right side of the second supporting plate (10), a sliding block (12) is slidably connected in the middle of the sliding groove (11), and one side of the sliding block (12) is fixedly connected with one side of the top of the second cantilever (8) through a connecting plate (13).