CN214031467U

CN214031467U - Cantilever crane

Info

Publication number: CN214031467U
Application number: CN202023107494.3U
Authority: CN
Inventors: 梁军
Original assignee: Xuzhou Gravity Lifting Equipment Technology Co ltd
Current assignee: Xuzhou Gravity Lifting Equipment Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-08-24
Anticipated expiration: 2030-12-21

Abstract

The utility model discloses a cantilever crane, cantilever crane includes: a column; the cantilever is rotatably connected with the top of the upright column and comprises a cantilever body and an electric cylinder fixedly connected with the cantilever body, and when the electric cylinder stretches and retracts, the outer wall of the electric cylinder is far away from or close to the upright column along the length direction of the cantilever body, so that the cantilever is extended or shortened; the suspension arm is connected with the outer wall of the electric cylinder and can move along the length direction of the suspension arm. The technical scheme of the utility model the length that can change cantilever crane's davit in a flexible way increases cantilever crane's hoist and mount scope.

Description

Cantilever crane

Technical Field

The utility model belongs to the technical field of electrical construction, especially, relate to a cantilever crane.

Background

As a material hoisting device, the cantilever crane is widely applied to occasions such as workpiece hoisting of a production line between upper and lower materials and processes of a workshop machine tool, can avoid workshop obstacles in a certain operation space range in real time, and is placed at a specified position of a production and processing workshop through multi-angle hoisting of materials.

Currently, the cantilever has a fixed length. When the cantilever is short, a large radius of rotation cannot be presented in a fixed situation. When the cantilever is long, the cantilever crane occupies a large space and is inconvenient to move.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a davit crane, and then change the extension scope of davit in a flexible way to a certain extent.

Other features and advantages of the invention will be apparent from the following detailed description, or may be learned by practice of the invention in part.

According to the embodiment of the utility model provides a cantilever crane, include: a column; the cantilever is rotatably connected with the top of the upright column and comprises a cantilever body and an electric cylinder fixedly connected with the cantilever body, and when the electric cylinder stretches and retracts, the outer wall of the electric cylinder is far away from or close to the upright column along the length direction of the cantilever body, so that the cantilever is extended or shortened; the suspension arm is connected with the outer wall of the electric cylinder and can move along the length direction of the suspension arm.

Further, the length of the outer wall of the electric cylinder is half of the total length of the cantilever when extended to the maximum length.

Further, the suspension arm comprises a lifting device and a suspension arm motor, the lifting device comprises a rope and a pulley with a hook, and the suspension arm moves along the length direction of the suspension arm under the driving of the suspension arm motor.

Further, the upright post is provided with a telescopic structure so as to adjust the height of the upright post.

Further, the lower extreme of stand is provided with the base, base and ground fixed connection.

Compared with the prior art, the utility model discloses a cantilever crane is through setting up the electricity jar on the cantilever body to make the outer wall of electricity jar can remove along the length direction of cantilever body, thereby change the length of cantilever crane's davit in a flexible way, increase cantilever crane's hoist and mount scope.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 schematically shows a schematic structural view of a cantilever crane according to an embodiment of the invention;

FIG. 2 schematically illustrates the jib crane of FIG. 1 in a configuration where the jib length is at a maximum;

fig. 3 schematically shows a schematic structural view of a cantilever crane according to another embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the invention.

The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.

The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

The technical contents of the preferred embodiments of the present invention will be more clearly understood and appreciated by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments, and the scope of the invention is not limited to the embodiments described herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The shape and size of each component shown in the drawings are arbitrary, and the present invention is not limited to the specific shape and size.

Example one

As shown in fig. 1, according to the utility model discloses an embodiment provides a cantilever crane, include: a column 10; the cantilever is rotatably connected with the top of the upright column and comprises a cantilever body 20 and an electric cylinder 30 fixedly connected with the cantilever body 20, and when the electric cylinder stretches, the outer wall of the electric cylinder is far away from or close to the upright column along the length direction of the cantilever body 20, so that the cantilever is extended or shortened; and a boom 40 connected to an outer wall of the electric cylinder and movable in a boom length direction.

The scheme can increase the rotation radius of the suspension arm. When the electric cylinder is contracted, the suspension arm is shorter, and the cantilever crane is convenient to transport and move. When the electric cylinder is extended, the suspension arm is longer, the rotation radius of the suspension arm is larger, and the hoisting range of the cantilever crane can be enlarged.

As shown in fig. 2, which is a structural view of the boom hoist when the elongation of the electric cylinder is maximum, the length L1 of the outer wall of the electric cylinder is half of the total length L2 of the boom when it is extended to the maximum length.

In practical applications, the length of the outer wall of the electric cylinder is not limited to this, and the length of the outer wall of the electric cylinder can be set according to practical conditions so as to simultaneously meet the requirements of the cantilever crane for carrying the length of the cantilever crane and the requirements of the rotation radius required by work for the length of the cantilever crane.

Further, the lower end of the upright post is provided with a base 50, and the base is fixedly connected with the ground.

In this case, the jib crane is an electric jib crane, the jib motor is provided on the jib for controlling the jib to rotate around the column, the jib can rotate around the column in a vertical plane, and can be fixed in a certain position after rotating to that position.

The jib crane may also be a manual jib crane.

Example two

As shown in fig. 3, the jib crane according to the embodiment of the present invention is different from the jib crane according to the first embodiment in that the column 10 has a telescopic structure 60 to adjust the height of the column 10. The jib crane, the height of which can be adjusted, can take up less space during transport and increase the working height of the jib crane when required.

The utility model provides an above cantilever crane is through setting up the electric jar on the cantilever body to make the outer wall of electric jar can remove along the length direction of cantilever body, thereby change the length of cantilever crane's davit in a flexible way, increase cantilever crane's hoist and mount scope.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the teachings of this invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A cantilever crane, comprising:

a column;

the cantilever is rotatably connected with the top of the upright column and comprises a cantilever body and an electric cylinder fixedly connected with the cantilever body, and when the electric cylinder stretches, the outer wall of the electric cylinder is far away from or close to the upright column along the length direction of the cantilever body, so that the cantilever is extended or shortened;

the suspension arm is connected with the outer wall of the electric cylinder and can move along the length direction of the suspension arm.

2. The boom hoist as claimed in claim 1, wherein the length of the outer wall of the electric cylinder is half of the total length of the boom when extended to the maximum length.

3. The boom crane of claim 1, wherein the boom comprises a hoist and a boom motor, the hoist comprising a rope and a sheave with a hook, the boom being moved along the boom length direction by the drive of the boom motor.

4. The cantilever crane of claim 1, wherein the upright has a telescopic structure to adjust the height of the upright.

5. The cantilever crane of claim 1, wherein the lower end of the upright is provided with a base, the base being fixedly connected to the ground.