CN107934759B

CN107934759B - Automatic open-close lifting appliance device

Info

Publication number: CN107934759B
Application number: CN201711415504.XA
Authority: CN
Inventors: 张海康; 张国金
Original assignee: China Automobile Industry Engineering Co Ltd; Scivic Engineering Corp
Current assignee: Aie Luoyang Jiangong Testing Co ltd
Priority date: 2017-12-22
Filing date: 2017-12-22
Publication date: 2023-09-08
Anticipated expiration: 2037-12-22
Also published as: CN107934759A

Abstract

The invention discloses an automatic opening and closing lifting appliance device which comprises at least one pair of rotatable opposite lifting arms arranged on a lifting rod, wherein a lifting hook part is formed at the bottom of each lifting arm, a lifting plate capable of swinging up and down is arranged on each lifting arm, the free end of each lifting plate is at a certain distance from the free end of each lifting hook part in an initial state, and the free end of each lifting plate and the free end of each lifting hook part are positioned on the same vertical plane. According to the automatic opening and closing lifting appliance device, the lifting arm can rotate by virtue of the rotating shaft, and in a free state, the lifting arm can vertically downwards by virtue of self gravity, and can swing up and down by a certain angle on the lifting arm after being stressed by the shifting plate, and the lifting arm can rotate and automatically open and close by virtue of self gravity and the cooperation of the shifting plate in the lifting and descending process, so that the lifting and unloading operations are convenient.

Description

Automatic open-close lifting appliance device

Technical Field

The invention relates to the technical field of lifting appliances, in particular to an automatic opening and closing lifting appliance device.

Background

At present, when a lifting tool is used for lifting goods or a container, a lifting hook is usually used for hooking a lifting rope on the container, and the lifting tool is poor in operability and inconvenient to use, so that improvement is needed.

Disclosure of Invention

The invention aims at overcoming the technical defects in the prior art, and provides an automatic opening and closing lifting appliance device which can realize automatic opening and closing and is convenient to lift and disassemble.

The technical scheme adopted for realizing the purpose of the invention is as follows:

the utility model provides an automatic open-close hoist device, includes at least a pair of rotatable relatively setting's that installs on the jib davit, the bottom of davit is formed with lifting hook portion, install on the davit and can reciprocate pull out the board, in the initial state pull out the free end of board with the free end of lifting hook portion is apart from a certain distance, just pull out the free end of board with the free end of lifting hook portion is located same vertical plane.

The number of pulling plates on each suspension arm is two, and the pulling plates are symmetrically arranged on the suspension arms.

And a limiting block is arranged on the contact surface of the lifting hook part and the lifted object.

The suspension arm is arranged on the suspension rod through a rotating shaft, the pulling plate is arranged on the suspension arm through a shaft lever, and the vertical swing angle is limited through a coil spring.

According to the automatic opening and closing lifting appliance device, the lifting arm can rotate by virtue of the rotating shaft, and in a free state, the lifting arm can vertically downwards by virtue of self gravity, and can swing up and down by a certain angle on the lifting arm after being stressed by the shifting plate, and the lifting arm can rotate and automatically open and close by virtue of self gravity and the cooperation of the shifting plate in the lifting and descending process, so that the lifting and unloading operations are convenient.

Drawings

FIG. 1 is a schematic view of an automatic closing spreader;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

figures 3-6 are schematic views of the lifting appliance performing a lifting process;

fig. 7-10 are schematic diagrams of the actions of the spreader to perform the unloading process, respectively.

Detailed Description

The invention is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Referring to fig. 1-2, an automatic opening and closing lifting appliance device comprises at least one pair of rotatable opposite lifting arms 1 arranged on opposite lifting rods 4, wherein L-shaped lifting hook parts 7 are formed at the bottoms of the lifting arms, lifting plates 2 capable of swinging up and down are arranged on the lifting arms, the free ends of the lifting plates and the free ends of the lifting hook parts are at a certain distance in an initial state, and the free ends of the lifting plates and the free ends of the lifting hook parts are positioned on the same vertical plane.

Preferably, two pulling plates are arranged on each suspension arm and are symmetrically arranged on the suspension arms, and of course, the number of pulling plates can be one, and the method is not limited in particular.

Further, a section of long limiting block 6 is fixed on the contact surface 5 of the lifting hook part and the lifted object along the axial direction, and is used for being matched with a limiting groove (not shown) corresponding to the lifting contact surface of the container 100, so as to prevent the lifting arm from rotating during lifting. The stopper 6 is integrally formed with the hook portion 7, and is engaged with a stopper groove corresponding to a lifting contact surface of the cargo box 100, thereby preventing the boom from rotating.

The cross section of the part where the contact surface is located is triangular, and two ends of the contact surface extend out of two sides of the lifting hook part 7, so that the contact surface with a container is enlarged, and the lifting stability is ensured.

The cross section of the free end of the pulling plate 2 is in a triangular structure, as shown in fig. 1, in the initial state, the upper end of the pulling plate is a plane, and the inner side surface of the pulling plate is an inclined plane which is downwards and outwards.

In the present invention, the coil spring may be installed inside the pulling plate 2 to limit the vertical swing angle, and the coil spring control part swings as in the prior art, and the coil spring installation structure will not be described.

In the following, the lifting process is described with reference to fig. 3-6, the initial state of the lifting appliance is shown in fig. 3, the lifting arm is ready to descend to receive the cargo box 100, after the lifting arm descends to contact with the cargo box, the lifting arm rotates outwards, after the lifting arm descends to pass through the cargo box, the lifting arm folds by gravity, after the lifting arm ascends to contact with the cargo box, as shown in fig. 6, lifting is started, and the lifting arm is prevented from rotating by virtue of the limiting block on the lifting arm.

The following description is made of the process of unloading the crane with reference to fig. 7-10, in which, in fig. 7, the boom is lowered, the boom and the lug are all lowered over the container, as shown in fig. 8, the boom is raised, the lug starts to contact with the container, as shown in fig. 9, the boom is raised continuously, after the lug contacts with the container, the boom is opened, as shown in fig. 10, the boom is restored to its original state, and the opening and closing operation is completed.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. The automatic opening and closing lifting appliance device is characterized by comprising at least one pair of rotatable opposite lifting arms arranged on a lifting rod, wherein a lifting hook part is formed at the bottom of each lifting arm, a lifting plate capable of swinging up and down is arranged on each lifting arm, the free end of each lifting plate is at a certain distance from the free end of each lifting hook part in an initial state, and the free ends of the lifting plates and the free ends of the lifting hook parts are positioned on the same vertical plane; in the initial state, the upper end of pull out the board is the plane, and the medial surface is the downward outside inclined plane, when lifting by crane the work piece, two opposite arrangement the lifting hook portion is used for holding the work piece from the work piece bottom in the opposite both sides of work piece bottom, two pull out the board be located by the side wall face of lifting by crane the work piece bottom of connecting the work piece with between the davit, just pull out the board the downward outside inclined plane is through the face contact support by lifting by crane the work piece on the side wall face, press from both sides the work piece at opposite both sides.

2. The automatic opening and closing spreader apparatus of claim 1, wherein there are two pulling plates on each of the arms, symmetrically disposed on the arms.

3. The automatic opening and closing hanger apparatus of claim 1 wherein a stopper is provided on a contact surface of the hook portion with the workpiece to be lifted.

4. The automatic opening and closing spreader apparatus of claim 1, wherein the boom is mounted on the boom by a pivot, and the pullout plate is mounted on the boom by a shaft and defines an up-down swing angle by a coil spring.