CN213738333U

CN213738333U - Universal rotation limiting device for crane

Info

Publication number: CN213738333U
Application number: CN202021807308.4U
Authority: CN
Inventors: 袁伸; 邵高林
Original assignee: CSSC Nanjing Luzhou Machine Co Ltd
Current assignee: CSSC Nanjing Luzhou Machine Co Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-07-20
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses a general rotary limiting device for a crane, which comprises a crane column and a crane body, wherein the crane column is rotationally connected with the crane body, the lower end of the crane body is provided with a limiting valve, the limiting valve is fixedly connected with the crane body, the lower end of the limiting valve is provided with a cam, a limiting ring plate is arranged in the crane column, the limiting ring plate is provided with a position adjusting hole, the cam is fixedly arranged on the position adjusting hole, the limiting ring plate is fixedly connected with the crane column, the limiting ring plate added in the crane column is provided with a position adjusting hole, the intervals between the position adjusting holes are uniform and equal, the position of the cam can be adjusted at will, the limiting ring plate is welded in the crane column, a ring rib plate is added for the crane column, the strength of the steel structure of the crane column is enhanced to a certain degree, and only two cam supports are arranged on the limiting ring plate, the rest positions can be provided with accessories such as lighting lamps and the like.

Description

Universal rotation limiting device for crane

Technical Field

The utility model relates to a loop wheel machine technical field specifically is a general gyration stop device of loop wheel machine.

Background

The crane is commonly known as a crane and widely applied to a series of heavy-duty products such as ships, equipment, machinery, molds and the like, when the crane works, the operation range of the crane needs to be limited in a rotating way in order to avoid collision with other facilities or hoisting objects, the limit system of the crane can ensure the safety of personnel and object property and avoid loss, the rotating limit of the existing sundries crane generally comprises the steps of installing a cam bracket on a welding bolt fixed on the inner wall of a base column, when the crane works, a limit valve roller arranged at the lower end of the crane touches a cam, and sending a stop signal to a hydraulic system to limit the rotating working area of the crane, however, the mode of welding the cam bracket on the inner wall of the crane column has some defects, when the objects or the operation equipment around the crane are fixed, most of the welding bolt can meet the operation requirement of the crane, and when the objects around the crane are not fixed, for example, when goods are stacked and the like, the welding bolt is fixed, and the limit of the crane is inconvenient to adjust when the goods are moved away. Therefore, a universal rotation limiting device for cranes is needed to solve the above problems.

Disclosure of Invention

An object of the utility model is to provide a general gyration stop device of loop wheel machine to solve the problem among the prior art.

The utility model provides a general gyration stop device of loop wheel machine, includes loop wheel machine post and loop wheel machine shaft, the loop wheel machine post rotates with the loop wheel machine shaft to be connected, including setting up in the limit valve of loop wheel machine shaft lower extreme, sets up the spacing crown plate in the loop wheel machine post, sets up in the cam of limit valve lower extreme, be provided with the position adjustment hole on the spacing crown plate, cam fixed mounting is on the position adjustment hole, and spacing crown plate and loop wheel machine post fixed connection have strengthened the intensity of loop wheel machine post to a certain extent.

As a further improvement of the technical scheme, the position adjusting holes are circumferentially arranged on the limiting ring plate for at least one circle, the position adjusting holes are long waist-shaped holes, and the positions of the cams can be adjusted randomly by the aid of the long waist-shaped holes.

As a further improvement of the technical scheme, the position adjusting holes are formed in the limiting ring plate at equal intervals in the circumferential direction, the position adjusting holes are formed in the limiting ring plate in the radial direction and are provided with two circles, and the cam support can be installed more stably due to the arrangement of the two circles of position adjusting holes.

As a further improvement of the technical scheme, the limit ring plate is welded with the crane column.

As a further improvement of the technical scheme, the lower end of the cam is provided with a cam support, the cam is fixedly connected with the cam support through a bolt, the cam support penetrates through a position adjusting hole in the limiting ring plate through the bolt and is fixedly connected with the position adjusting hole, and the cam support is convenient to replace and maintain.

As a further improvement of the technical scheme, a limit valve support is arranged at the upper end of the limit valve, the limit valve is fixedly connected with the limit valve support through bolts, a crane bottom plate is arranged at the lower end of the crane tower body, the limit valve support is fixedly connected with the crane bottom plate at the lower end of the crane tower body through bolts, and the limit valve support can be conveniently detached and maintained.

As a further improvement of the technical scheme, the limit valve is electrically connected with a power supply of the crane, when the crane rotates, the limit valve touches the cam, the limit valve obtains a stop signal and transmits the signal to a hydraulic valve of the crane, and the hydraulic system drives the crane to stop rotating.

The utility model has the advantages that:

1. the utility model has simple and reasonable structure, the limit ring plate is added in the crane column, two circles of position adjusting holes are arranged on the limit ring plate, and the positions of the cams can be adjusted at random by arranging the uniform intervals between the position adjusting holes, so that the arrangement difficulty is low, the adjustment is accurate, the error is small, the universality is strong, and the debugging and maintenance are convenient;

2. the limiting ring plate is welded inside the crane column, namely a circle of ring rib plate is added for the crane column, so that the steel structure strength of the crane column is enhanced to a certain extent;

3. the limiting ring plate is only provided with two cam supports, a large number of mounting positions are left, and the position adjusting holes of the limiting ring plate can be used as mounting supports of small accessories inside the crane column such as the illuminating lamp.

Drawings

FIG. 1 is a schematic view of an overall structure of a universal rotation limiting device for a crane;

FIG. 2 is a sectional view taken along the line A-A of the universal rotation limiting device for cranes shown in FIG. 1;

FIG. 3 is a perspective view of a crane column of the universal slewing stop device for a crane;

FIG. 4 is a partial enlarged view of a position adjustment hole of the universal rotation limiting device for cranes;

fig. 5 is a schematic diagram of a limiting structure of a universal rotation limiting device for a crane.

Description of the drawings: 1. the crane comprises a limiting ring plate, 2, a cam support, 3, a cam, 4, a limiting valve, 5, a limiting valve support, 6, a crane column, 7, a crane tower body, 8, a position adjusting hole, 9, a lighting lamp, 10 and a crane bottom plate.

Detailed Description

The technical scheme of the utility model is further explained in detail with the attached drawings as follows:

example (b): as shown in fig. 1 and 3, a general gyration stop device of loop wheel machine, including loop wheel machine column 6 and loop wheel machine tower body 7, loop wheel machine column 6 rotates with loop wheel machine tower body 7 to be connected, including setting up in stop valve 4 of loop wheel machine tower body 7 lower extreme, the specific model of stop valve 4 is: ohm dragon OMRON D4C-1224, limit ring plate 1 arranged in crane column 6, cam 3 arranged at the lower end of limit valve 4, position adjusting hole 8 arranged on limit ring plate 1, cam 3 fixedly mounted on position adjusting hole 8.

The position adjusting holes 8 are circumferentially arranged on the limiting ring plate 1 for at least one circle, and the position adjusting holes 8 are long waist-shaped holes.

As shown in fig. 4, the position adjusting holes 8 are located on the limit ring plate 1 at equal circumferential intervals, the position adjusting holes 8 are located on the limit ring plate 1 and radially provided with two circles, and the position adjusting holes 8 are provided with uniform intervals therebetween, so that the strength of the limit ring plate 1 can be better ensured.

The limit ring plate 1 is welded with a crane column 6.

As shown in fig. 5, the cam support 2 is arranged at the lower end of the cam 3, the cam 3 is fixedly connected with the cam support 2 through bolts, the cam support 2 penetrates through the position adjusting holes 8 in the limiting ring plate 1 through bolts, the cam 3 is convenient to maintain and replace due to the arrangement of the cam support 2, the installation positions of the position adjusting holes 8 are more, and crane accessories such as a lighting lamp 9 can be installed.

The upper end of the limit valve 4 is provided with a limit valve support 5, the limit valve 4 is fixedly connected with the limit valve support 5 through bolts, the lower end of the crane tower body 7 is provided with a crane bottom plate 10, the crane bottom plate 10 is fixedly connected with the crane tower body 7, the limit valve support 5 is fixedly connected with the crane bottom plate 10 at the lower end of the crane tower body 7 through bolts, and the limit valve support 5 is convenient to maintain and replace the limit valve 4.

The limit valve 4 is electrically connected with a crane power supply, when the crane drives the limit valve 4 to rotate and contact with the cam 3, the limit valve 4 is triggered, a trigger signal is transmitted to a hydraulic valve of the crane, and the hydraulic system drives the crane to stop rotating.

The utility model discloses a theory of operation is: when the crane operates, the crane tower body 7 rotates to drive the limit valve 4 fixedly connected with the crane bottom plate 10 at the lower end of the crane tower body 7 to rotate, when the limit valve 4 touches the cam 3 on the crane column 6, the limit valve 4 is triggered and transmits a trigger signal to a hydraulic valve of the crane, the hydraulic valve drives a hydraulic system of the crane to stop the rotation of the crane, when the rotation position of the crane needs to be adjusted, the cam bracket 2 at the lower end of the cam 3 can be detached, so that the position of the cam 3 can be adjusted, two rings of position adjusting holes 8 arranged on the limit ring plate 1 in the crane column 6 can be used for randomly adjusting the position of the cam bracket 2, so that the position of the cam 3 can be randomly adjusted, and the rotation requirements of the crane under different operation conditions can be met.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. The utility model provides a general gyration stop device of loop wheel machine, includes loop wheel machine post (6) and loop wheel machine body of tower (7), loop wheel machine post (6) are rotated with loop wheel machine body of tower (7) and are connected, its characterized in that, including setting up in limit valve (4) of loop wheel machine body of tower (7) lower extreme, set up spacing crown plate (1) in loop wheel machine post (6), set up in cam (3) of limit valve (4) lower extreme, be provided with position control hole (8) on spacing crown plate (1), cam (3) fixed mounting is on position control hole (8).

2. The universal rotation limiting device for cranes as claimed in claim 1, wherein the position adjusting hole (8) is circumferentially arranged on the limiting ring plate (1) for at least one circle, and the position adjusting hole (8) is a long waist-shaped hole.

3. The universal rotation limiting device for cranes as claimed in claim 1 or 2, wherein the position adjusting holes (8) are located on the limiting ring plate (1) at equal circumferential intervals, and the position adjusting holes (8) are radially arranged on the limiting ring plate (1) in two circles.

4. The universal swing limiting device for cranes according to claim 1, wherein the limiting ring plate (1) is welded to the crane column (6).

5. The universal rotation limiting device for the crane as claimed in claim 1, wherein a cam bracket (2) is arranged at the lower end of the cam (3), the cam (3) is fixedly connected with the cam bracket (2) through a bolt, and the cam bracket (2) is fixedly connected with a position adjusting hole (8) in the limiting ring plate (1) through a bolt.

6. The universal rotary limiting device for the crane according to claim 1, wherein a limiting valve support (5) is arranged at the upper end of the limiting valve (4), the limiting valve (4) is fixedly connected with the limiting valve support (5) through a bolt, a crane bottom plate (10) is arranged at the lower end of the crane tower body (7), and the limiting valve support (5) is fixedly connected with the crane bottom plate (10) at the lower end of the crane tower body (7) through a bolt.

7. The universal swing limiting device for cranes according to claim 1, wherein the limiting valve (4) is electrically connected to a crane power supply.