CN110902558A

CN110902558A - Double-jaw plate grab bucket device of crane

Info

Publication number: CN110902558A
Application number: CN201911409638.XA
Authority: CN
Inventors: 丁怀青; 杨成刚; 张建军; 梁雪平; 张进; 贾军章; 杨俊生
Original assignee: TANGSHAN INDUSTRIAL VOCATIONAL TECHNICAL COLLEGE
Current assignee: TANGSHAN INDUSTRIAL VOCATIONAL TECHNICAL COLLEGE
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-03-24

Abstract

A double-jaw plate grab bucket device of a crane, in particular to a grab bucket device for loading and unloading mineral powder particles with high water content. The invention provides a solution with simple structure and convenient operation, aiming at the defects of insufficient material taking and unclear material discharging in the prior art that the crane grab bucket loads and unloads the mineral powder with high water content. The improved device is characterized in that the grab bucket device comprises an open-close type grab bucket, a motor, a portable power supply, a transmission chain wheel, a chain and a driving roller group. Compared with the prior art, the invention has simple structure and convenient operation, can effectively reduce the cohesive force of powder and the friction coefficient between the powder and the grab bucket, and improves the loading and unloading operation efficiency of the crane.

Description

Double-jaw plate grab bucket device of crane

Technical Field

A crane double-jaw plate grab bucket device, in particular to a grab bucket device for loading and unloading mineral powder particles with high water content, which belongs to the field of hoisting machinery.

Background

The port portal crane is the most widely used equipment for port enterprises for loading and unloading operation, and is used for loading and unloading various miscellaneous goods and bulk goods. When loading and unloading bulk cargos such as coal, bauxite ore powder, nickel ore powder, iron powder and the like, the tools need to be matched with grab buckets. The grab bucket is a fetching device which can automatically grab and unload bulk cargo or long materials by opening and closing the grab bucket by means of jaw plates, and the grab bucket has a plurality of types and can be divided into a double-jaw plate grab bucket and a multi-jaw plate grab bucket according to the number of the jaw plates. For powdery bulk cargo, particularly bauxite ore powder, nickel ore powder and the like, an open-close type double-jaw plate grab bucket is often used. In the working process of the grab bucket, the load of the grab bucket is realized by the dead weight of the grab bucket. When the moisture content of the mineral powder is higher and reaches 30% -50%, two problems are easy to occur: when the double-jaw plate is closed to grab mineral powder goods, the mineral powder has high adhesive force, so that the double-jaw plate cannot be inserted into the materials, the capacity of the grab bucket for grabbing the goods is lower than 30%, and the bucket cannot be fully operated, which is insufficient for taking the materials; and secondly, when the double-jaw plate is opened for discharging, the powder is adhered to the inner wall of the double-jaw plate of the grab bucket, the material in the grab bucket is difficult to discharge, and residual material is left in the grab bucket, so that the discharging is unclear. The two problems described above seriously affect the efficiency of the handling operation. By consulting the relevant literature data at home and abroad for three years, no technical scheme and patent information for solving the problem are found. Therefore, the technical problems of the loading capacity of the grab bucket of the portal crane and the adhesive force of the contact mineral powder are researched, and the method has great practical significance and good economic value.

Disclosure of Invention

The invention provides a solution with simple structure and convenient operation, aiming at the defects of insufficient material taking and unclear material discharging in the prior art that the grab bucket of the portal crane loads and unloads mineral powder with large water content.

The technical scheme adopted for realizing the problems is as follows: for the cohesive force that reduces the powder and the coefficient of friction between powder and the grab bucket, install rolling, have controllable drive roller lever group additional between grab bucket and powder, wherein:

a. the double-jaw plate grab bucket device of the crane is improved on the basis of the existing grab bucket, and the assembly and use requirements of the original equipment are not influenced;

b. the motor and the portable power supply are fixed on the upper part of the grab bucket, and the direct-current battery pack supplies power and needs to be replaced and charged periodically;

c. the transmission chain wheel and the chain are arranged in a closed space inside the grab bucket and used for providing power of the motor for the driving roller bar group;

d. the side surface of the grab bucket is provided with a rectangular hole, four roller sets are additionally arranged on each single jaw plate, chain transmission is adopted, and four direct current motors drive the jaw plates;

e. the driving roller bar group can be controlled by personnel in an operation and control room in a wireless remote mode, and the rolling direction can be changed.

Compared with the prior art, the invention has simple structure and convenient operation, can effectively reduce the cohesive force of powder and the friction coefficient between the powder and the grab bucket, and improves the loading and unloading operation efficiency of the crane.

Drawings

Fig. 1 is a top view, fig. 2 is a front view, and fig. 3 is a left view, which is a schematic structural diagram of the present invention.

The top view of fig. 1 includes a left jaw 18, a right jaw 17, a motor 41, a motor 42, a motor 43, and a motor 44.

The front view of fig. 2 includes: the left jaw has four roller bars, wherein each roller bar group comprises four

rollers

11, 12, 13 and 14. The right jaw plate structure is the same as the left jaw plate.

The front view of fig. 2 includes: sprocket 2, motor backup pad 3, battery 5, grab bucket hoisting accessory 6, chain 7.

The left side view of fig. 3 includes the support frame mechanism 8, the shield 9, and the remote control 10. The left jaw plate is provided with four groups of roller bars, and the structure of the right jaw plate is the same as that of the left jaw plate.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Referring to the drawings, the left jaw 18 has four roller bar sets, the right jaw also has four roller bar sets, and the structure and the power transmission mode of the left jaw and the right jaw are the same.

Two motors are respectively arranged on the upper portions of the right jaw plate 17 and the left jaw plate 18, the motors are four in total, the storage battery supporting plate 13 is fixed on the grab bucket lifting device 6, the storage batteries 5 are arranged on the storage battery supporting plate 13, and the four storage batteries 5 respectively provide power for the four motors. The storage battery 5 is a portable power supply and is fixed on the upper part of the grab bucket, and the direct-current battery pack supplies power and needs to be replaced and charged regularly.

Each motor drives two adjacent roller bar groups, each roller bar group is provided with four rollers, and each roller bar group of the left jaw 18 comprises a roller 11, a roller 12 and a roller 14; the right jaw 17 is identical in structure to the left jaw 18.

The chain wheel is installed to the motor output shaft, transmits power to four roller thick stick groups in proper order through the chain. The power of the four motors is transmitted for the first time through the chain wheel and the chain, and the four rollers form a roller lever group and rotate in the same direction together.

The left jaw 18 supports the frame mechanism 8 in two, respectively in the middle of two adjacent roller bar sets and roller bar sets. The right jaw 17 is identical in structure to the left jaw 18.

The protective cover 9 protects the transmission system of the roller group, and the left jaw plate and the right jaw plate are respectively provided with two protective covers 9.

When the grab bucket performs the action of grabbing materials, the left jaw plate 18 and the right jaw plate 17 are closed, personnel in an operation room starts the remote controller 10, the motor rotates forwards to drive the four roller bar sets to rotate anticlockwise, the materials are stirred, the friction force is reduced, and the materials are helped to be drawn into the grab bucket; when the grab bucket discharges materials, the left jaw plate 18 and the right jaw plate 17 are opened, an operator in an operation room starts the remote controller 10, the motor rotates reversely, and the roller lever set is driven to rotate clockwise to help the materials to be discharged out of the grab bucket.

Claims

1. Two jaw grab bucket devices of hoist, including open-close type two jaw grab bucket, motor and portable power, drive sprocket and chain, drive roller group, its characterized in that:

a. the double-jaw plate grab bucket device of the crane is improved on the basis of the existing grab bucket;

b. the motor and the portable power supply are fixed on the upper part of the grab bucket, and the direct-current battery pack supplies power and is replaced and charged periodically;

d. the side surface of the grab bucket is provided with a rectangular hole, four roller sets are additionally arranged on each single jaw plate, and the four roller sets are driven by chains and four direct current motors.

2. The crane double-jaw grab bucket device according to claim 1, characterized in that: the driving roller bar group can be controlled by personnel in an operation and control room in a wireless remote mode, and the rolling direction can be changed.