CN211998521U

CN211998521U - Crane small hook limiting bearing chain and small hook main steel wire rope anti-winding device

Info

Publication number: CN211998521U
Application number: CN202020355619.5U
Authority: CN
Inventors: 陈斌; 宋琨; 丛培坤
Original assignee: China National Offshore Oil Corp CNOOC; CNOOC China Ltd Tianjin Branch
Current assignee: China National Offshore Oil Corp CNOOC; CNOOC China Ltd Tianjin Branch
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-11-24
Anticipated expiration: 2030-03-19

Abstract

The utility model provides a spacing bearing chain of crane hooklet and hooklet owner wire rope anti-winding device, includes: the main steel wire rope is hung on the small hook of the crane, the upper limit switch bearing chain is connected with two ends of the derrick mast of the crane, and the upper limit switch is arranged on the small hook of the crane; the main steel wire rope is provided with a plurality of circular rings, two ends of the circular rings are respectively connected with a steel pipe, one end of the steel pipe is connected with the outside of the circular rings, the other end of the steel pipe is connected with an upper limit switch bearing chain on a small hook of the crane, and the connected steel pipe and the main steel wire rope are in a cross shape; the steel pipes and the main steel wire ropes which are connected in a cross shape are uniformly arranged at the position between the two upper limit switch bearing chains; the two upper limit switch bearing chains are supported by the steel pipe, so that the upper limit switch bearing chains cannot be in direct contact with the main steel wire rope, and the anti-winding function is realized. The utility model solves the problem that the limit switch bearing chain on the small hook is wound with the main steel wire rope; and the potential safety hazard that the pulley is involved in is avoided.

Description

Crane small hook limiting bearing chain and small hook main steel wire rope anti-winding device

Technical Field

The utility model belongs to the offshore oil engineering field especially relates to a spacing bearing chain of crane hooklet and hooklet owner wire rope anti-winding device for offshore oil platform.

Background

With the rapid development of society, the demand of countries and people for energy is increasing day by day. Oil fields are also gradually advancing toward multi-field development, and the importance of offshore oil exploitation is self-evident. As the crane of the offshore oil platform plays an important role, the crane is responsible for receiving and delivering personnel, hoisting materials, matching of drilling and workover operations and the like. Therefore, it is important for the safe and stable operation of the crane.

As shown in fig. 1, the conventional platform crane mainly includes: the device comprises a main steel wire rope 1 vertically hung on a small hook of the crane, an upper limit switch bearing chain 2 connected with two ends of a derrick mast of the crane and an upper limit switch 3 installed on the small hook of the crane; in the running process of the crane, the main steel wire rope 1 and the upper limit switch bearing chain 2 on the small hook of the platform crane can shake under the condition of wind or other reasons and are easy to wind, so that the accident of winding the main steel wire rope 1 and the upper limit switch bearing chain 2 on the small hook of the platform crane can happen, and in serious cases, the upper limit switch bearing chain 3 on the small hook of the platform crane can be also taken up by the main steel wire rope 1 on the small hook and enters the pulley, so that the pulley is damaged; therefore, the normal operation of the platform crane is affected, the failure rate and the maintenance rate are extremely high, and the cost is high. Not only cause damage to the equipment; moreover, a great potential safety hazard exists. Based on the situation, the small hook limiting bearing chain and the small hook main steel wire rope anti-winding device of the offshore oil platform crane are produced at the same time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spacing bearing chain of crane hooklet and hooklet owner wire rope prevent wind-up device to main wire rope winding's technical problem on spacing switch bearing chain and the hooklet is gone up to the solution crane hooklet.

In order to achieve the above purpose, the specific technical solution of the present invention is as follows:

the utility model provides a spacing bearing chain of crane hooklet and hooklet owner wire rope anti-winding device, includes: the main steel wire rope is vertically hung on the small hook of the crane, the upper limit switch bearing chain is connected with two ends of the derrick mast of the crane, and the upper limit switch is arranged on the small hook of the crane; the main steel wire rope is provided with a plurality of circular rings, two ends of the circular rings are respectively connected with a steel pipe, one end of the steel pipe is connected with the outside of the circular rings, the other end of the steel pipe is connected with an upper limit switch bearing chain on a small hook of the crane, and the connected steel pipe and the main steel wire rope are in a cross shape; the steel pipes and the main steel wire ropes which are connected in a cross shape are uniformly arranged at the position between the two upper limit switch bearing chains; the two upper limit switch bearing chains are supported by the steel pipe, so that the upper limit switch bearing chains cannot be in direct contact with the main steel wire rope, and the anti-winding function is realized.

Furthermore, the main steel wire rope is positioned in the middle of the upper limit switch.

Further, the steel tube has a size of 1/2 inches or 3/4 inches; and the steel pipes at the two ends of the circular ring are positioned on the same axis.

Furthermore, the rings penetrate through the main steel wire rope, and the rings are uniformly arranged on the main steel wire rope at intervals of a set distance.

Further, the distance between the plurality of rings is 30-50 cm.

Further, the length of the upper limit switch load-bearing chain is in the range of 2-2.5 meters; and are positioned at the two ends of the upper limit switch.

Furthermore, the upper limit switch is positioned at the lower end of the small hook of the crane and positioned between the bearing chains of the upper limit switch.

The utility model has the advantages of it is following:

the utility model is simple and convenient in daily maintenance operation, not only solves the problem that the limit switch bearing chain on the small hook is wound with the main steel wire rope on the small hook, greatly prolongs the service life and the maintenance period of the crane; and moreover, the potential safety hazard that the limiting bearing chain on the small hook is brought up by the main steel wire rope and is rolled into the pulley is avoided, the maintenance cost is greatly saved, and the production cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a conventional small hook steel wire rope, a small hook upper limit switch and a switch bearing chain;

fig. 2 is the utility model discloses a spacing bearing chain of crane hooklet and hooklet owner wire rope antiwind device schematic structure.

The notation in the figure is:

1. a main wire rope; 2. an upper limit switch bearing chain; 3. an upper limit switch; 4. a circular ring; 5. and (5) steel pipes.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings.

As shown in fig. 2, the utility model comprises: the device comprises a main steel wire rope 1 vertically hung on a small hook of a crane, an upper limit switch bearing chain 2 connected with two ends of a derrick mast of the crane and an upper limit switch 3 installed on the small hook of the crane; wherein, a plurality of rings 4 (three in this embodiment) are installed on the main steel wire rope 1, two ends of the rings 4 are respectively connected with steel pipes 5, one end of each steel pipe 5 is connected with the outside of the ring 4 in a welding manner, the other end of each steel pipe 5 is connected with an upper limit switch bearing chain 2 on a small hook of the crane, and the connected steel pipes 5 and the main steel wire rope 1 are in a cross shape; the steel pipe 5 and the main steel wire rope 1 which are connected in the cross shape are uniformly arranged at the position between the two upper limit switch bearing chains 2, and the two upper limit switch bearing chains 2 are supported by the steel pipe 5, so that the upper limit switch bearing chains 2 cannot be in direct contact with the main steel wire rope 1, and the anti-winding function is realized.

The main steel wire rope 1 is positioned in the middle of the upper limit switch 3.

The size of the steel pipe 5 is 1/2 inches or 3/4 inches; and the steel pipes 5 positioned at the two ends of the circular ring 4 are positioned on the same axis.

The circular rings 4 penetrate through the main steel wire rope 1, and the circular rings 4 are uniformly arranged on the main steel wire rope 1 at intervals of a set distance; the distances among the rings 4 are reasonably distributed according to the length of the upper limit switch bearing chain 2, and are generally 30-50 cm.

The length of the upper limit switch bearing chain 2 is within the range of 2-2.5 meters; and are located at both ends of the upper limit switch 3.

The upper limit switch 3 is positioned at the lower end of the small hook of the crane and is positioned between the upper limit switch bearing chains 2.

The crane, the steel wire rope, the limit switch and the bearing chain are prior art, and the unexplained technology is prior art, so that the description is omitted.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a spacing bearing chain of crane hooklet and hooklet owner wire rope anti-winding device which characterized in that includes: the main steel wire rope is vertically hung on the small hook of the crane, the upper limit switch bearing chain is connected with two ends of the derrick mast of the crane, and the upper limit switch is arranged on the small hook of the crane; the main steel wire rope is provided with a plurality of circular rings, two ends of the circular rings are respectively connected with a steel pipe, one end of the steel pipe is connected with the outside of the circular rings, the other end of the steel pipe is connected with an upper limit switch bearing chain on a small hook of the crane, and the connected steel pipe and the main steel wire rope are in a cross shape; the steel pipes and the main steel wire ropes which are connected in a cross shape are uniformly arranged at the position between the two upper limit switch bearing chains; the two upper limit switch bearing chains are supported by the steel pipe, so that the upper limit switch bearing chains cannot be in direct contact with the main steel wire rope, and the anti-winding function is realized.

2. The crane hooklet spacing load bearing chain and hooklet main rope anti-wind device of claim 1, wherein the main rope is located in the middle of the upper limit switch.

3. The crane hooklet spacing load bearing chain and hooklet main rope anti-wind device of claim 1, wherein said steel tube is 1/2 inches or 3/4 inches in size; and the steel pipes at the two ends of the circular ring are positioned on the same axis.

4. The crane hooklet spacing load bearing chain and hooklet main rope anti-wind device of claim 1, wherein the rings pass through the main rope, and the rings are uniformly disposed on the main rope at a predetermined distance.

5. The crane hooklet spacing load bearing chain and hooklet main rope anti-wind device of claim 1 or 4, wherein the distance between said rings is 30-50 cm.

6. The crane hooklet limit load chain and hooklet main rope anti-wind device of claim 1, wherein the length of the upper limit switch load chain is in the range of 2-2.5 meters; and are positioned at the two ends of the upper limit switch.

7. The crane hooklet spacing load bearing chain and hooklet main rope anti-wind device of claim 1, wherein said upper limit switch is located at the lower end of the crane hooklet and between the upper limit switch load bearing chains.