CN214692983U - Cantilever crane - Google Patents

Abstract

The utility model discloses a cantilever crane, include: the upright post comprises an upper upright post section and a lower upright post section, and the upper upright post section and the lower upright post section are rotatably connected through a slewing bearing; the cantilever is rotatably connected with the top of the upper upright post; the rotary motor is arranged on the cantilever and used for controlling the cantilever to rotate; the suspension arm is positioned below the suspension arm and can move along the length direction of the suspension arm. The technical scheme of the utility model the rotation angle that can increase cantilever crane cantilever.

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.

The rotation of the cantilever is limited by the rotation of the motor, and the cantilever cannot rotate for 360 degrees, so that a certain rotation dead angle exists.

How to realize the full rotary motion of the cantilever rotating 360 degrees is a technical problem which needs to be solved at present.

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 overcome the technical problem that can not realize the full slewing motion of cantilever 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: the upright post comprises an upper upright post section and a lower upright post section, and the upper upright post section and the lower upright post section are rotatably connected through a slewing bearing; the cantilever is rotatably connected with the top of the upper upright post; the rotary motor is arranged on the cantilever and used for controlling the cantilever to rotate; the suspension arm is positioned below the suspension arm and can move along the length direction of the suspension arm.

Furthermore, slewing bearing's last annular equidistance is provided with a plurality of pinholes, be provided with on the last stand section with pinhole complex locating pin the pinhole with after the locating pin combines, it is no longer rotatory to go up the stand section.

Further, the boom comprises a lifting device comprising a rope and a pulley with a hook.

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

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 segmenting the stand to set up slewing bearing between last stand section and lower stand section, realized the full slewing motion of 360 of cantilever.

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 shows a schematic structural view of a cantilever crane according to another embodiment of the present invention;

fig. 3 schematically shows a schematic cross-sectional structure of a cantilever according to an 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, a boom hoist includes a column, a boom 2, a slewing bearing 3, a slewing motor (not shown in the figure), and a boom 4. The upright column 1 comprises an upper upright column section 11 and a lower upright column section 12, and the upper upright column section 11 and the lower upright column section 12 are rotatably connected through a slewing bearing 6. Cantilever 2 rotates with the top of last stand to be connected, and rotary motor sets up on the cantilever for the control cantilever rotates, and davit 4 is located the cantilever below, can remove along cantilever length direction.

10 pin holes are formed in the slewing bearing 3 in an axial and equidistant mode, positioning pins matched with the pin holes are arranged on the upper column section, and after one pin hole is combined with one positioning pin, the upper column section does not rotate any more.

The technical scheme of the utility model use through slewing bearing and rotating electrical machines cooperation, can guarantee that cantilever crane realizes 360 hoist and mount operations in the operation space.

The boom is also provided with a motor for providing power for moving the rolling wheels, so that the boom 4 moves horizontally along the lower track direction of the cantilever 2.

The bottom of the upright post 1 and the base 5 can be fixed on the ground in a mode of fixing through foundation bolts.

One side of the cantilever 2 can be provided with a protruding part, wherein the protruding part is provided with a U-shaped rail with an upward opening, and the purpose that a hoisted object horizontally moves along the direction of the rail in the hoisting process can be realized. The upper part of the suspension arm 4 is provided with a rolling wheel which is accurately clamped into the U-shaped track of the cantilever 2, so that the suspension arm 4 is connected with the cantilever 2 up and down.

The lower part of the suspension arm 4 is provided with a lifting device which can comprise a rope and a pulley with a hook and is used for realizing the vertical lifting of a hoisted object. In the process of hoisting operation, firstly, the pin hole butt joint position between the slewing bearing 3 and the cantilever 2 is determined, the slewing operation angle of the cantilever 2 is fixed, then, the vertical hoisting of materials is realized through the hook pulley combination at the lower part of the suspension arm 4, the hoisting stops at a certain height, the materials can move along the horizontal operation of the cantilever 2 track through the roller on the upper part of the suspension arm 4, the specified position (vertical direction) where the materials need to arrive is further accurately positioned, then, the hoisted materials are placed through the hook pulley combination at the lower part of the suspension arm 4, and the primary hoisting process of the materials is completed.

Example two

As shown in fig. 2, a boom hoist includes a column, a boom 2, a slewing bearing 3, a boom 4, and a base 5. The bottom of cantilever upright post 1 is fixed subaerial through rag bolt's fixed mode with base 5, and the middle part of lower upright post section 12 is provided with the extending structure 9 that can be used to adjust the stand height to satisfy the hoist and mount operation requirement of co-altitude in the operating space.

EXAMPLE III

As shown in fig. 3, both sides of the cantilever 2 may be provided with a protrusion, wherein the protrusion is provided with a U-shaped rail opening upwards. Two independent and symmetrical hanging parts are arranged at the upper part of the suspension arm 4, the two hanging parts are respectively provided with a rolling wheel 71 and a rolling wheel 72, and the two hanging parts are respectively clamped into a U-shaped track 81 and a U-shaped track 82 of the protruding parts at the two sides of the cantilever 2, so that the suspension arm 4 and the cantilever 2 are connected up and down.

In fig. 1 and 2, the bottom of the upright 1 and the base 5 can be fixed by embedding a bottom plate, so that the base of the boom crane can be firmly fixed. The number of the pin holes arranged on the slewing bearing 3 in the circumferential direction at equal intervals is determined according to the actual hoisting load requirement and the positioning precision requirement, the pin holes can be arranged in a circumferential direction at equal intervals of 3-8, or 11-20, and the slewing angle of the upper column section can be selected from different angles of 180 degrees, 270 degrees, 345 degrees, 360 degrees and the like according to the requirement of a use place.

The slewing bearing 3 is arranged between the upper column section and the lower column section of the cantilever crane, the slewing position of the cantilever 2 in the hoisting process is positioned in a spring pin hole fixing mode, 360-degree full slewing motion of the cantilever can be realized, and the effective space for hoisting by the cantilever crane is increased.

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 (4)

1. A cantilever crane, comprising:

the upright post comprises an upper upright post section and a lower upright post section, and the upper upright post section and the lower upright post section are rotatably connected through a slewing bearing;

the cantilever is rotatably connected with the top of the upper upright post;

the rotary motor is arranged on the cantilever and used for controlling the cantilever to rotate;

the suspension arm is positioned below the suspension arm and can move along the length direction of the suspension arm;

the upper ring of the slewing bearing is provided with a plurality of pin holes at equal intervals, the upper column section is provided with a positioning pin matched with the pin holes, and the upper column section does not rotate any more after the pin holes are combined with the positioning pin.

2. The cantilever crane of claim 1, wherein the boom comprises a lifting device comprising a rope and a sheave with a hook.

3. The cantilever crane of claim 1, wherein the lower mast section has a telescopic structure to adjust the height of the mast.

4. 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.

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