CN203306920U

CN203306920U - Automatic tensioning three-jaw hook

Info

Publication number: CN203306920U
Application number: CN2013203089412U
Authority: CN
Inventors: 黄春明; 蒋文超
Original assignee: TIANJIN NANUO MACHINERY MANUFACTURING Co Ltd
Current assignee: TIANJIN NANUO MACHINERY MANUFACTURING Co Ltd
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2013-11-27
Anticipated expiration: 2023-05-31

Abstract

The utility model relates to an automatic tensioning three-jaw hook which consists of a lifting disc component and a hanging disc component which is arranged on the lifting disc component in a vertical sliding manner. A lifting ring and a sliding shaft are connected in a manner that a screw nut is welded at the lower end part of the lifting ring; the sliding shaft is connected with the screw nut in a threaded manner; the sliding shaft and the lifting ring are fixedly assembled together through another screw nut. The hook is convenient to lift up various curved surface workpieces with pores, and as the main parts of the hook are made of high-quality carbon steel and are subjected to quenching treatment, the hook is unlikely to deform and abrade when being used; due to the bending design of the hook, workpieces, the diameter of which is smaller than the circular diameter of a smallest section of a U-shaped groove of a lifting disc, can be lifted up, and sufficient strength of the jaw hook is ensured; as lifting disc holes and hanging disc holes are all lengthened, the guidance quality and the stability are improved. The hook can not only lift up internal-hole parts, but also can lift up the outer edges of parts when being turned inversely; the purpose of automatic tensioning or opening is achieved through movement cooperation of the jaw hook formed into a curved surface structure, and the lifting disc component.

Description

A kind of auto-tensioning three-jaw suspension hook

Technical field

The utility model belongs to lifting device, relates to the lifting of heavier workpiece, especially a kind of auto-tensioning three-jaw suspension hook.

Background technology

In machine up, because part is heavier, usually need to use crane moving parts, particularly medium-sized part, lifting both can be shortened non-cutting time, raise labour productivity neatly, can greatly alleviate again workman's manual labor.Lifting device generally has load hook, steel rope, hanging belt, seamless lifting chain, hoisting rope, strong magnets etc.But for curved-surface structure being arranged and with the parts of endoporus, strong magnets can't suck workpiece, lifting rope also is difficult for fixation workpiece, and suspension hook commonly used is not more known from where slinging.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of gravity simple in structure, flexible and convenient to use, that utilize workpiece self to realize the auto-tensioning three-jaw suspension hook stepped up.

Technical solutions of the utility model are achieved in that

A kind of auto-tensioning three-jaw suspension hook, by hanging scaffold assembly and the vertical extension dish assembly slided on the hanging scaffold assembly, formed, described hanging scaffold assembly comprises suspension ring, slide shaft, hanging scaffold, described suspension ring are a circular ring type structure that is vertical setting, the bottom of these suspension ring and the upper end of slide shaft are solidly installed, bottom and the hanging scaffold of this slide shaft are solidly installed, and this hanging scaffold radially evenly is shaped with three hold-down arms, on each hold-down arm, are shaped with a guide groove;

Described extension dish assembly comprises extension dish and claw hook, and this extension disc radial is shaped with three support arms corresponding with hold-down arm, on each support arm, is shaped with a link slot, by hinge, is hinged with claw hook in each link slot;

The connection mode of described hanging scaffold assembly and extension dish assembly is: the extension dish coaxially is slidably mounted on the slide shaft of suspension ring belows, and the lower end of these three claw hooks is corresponding being inlaid in the guide groove that hanging scaffold is shaped with respectively.

And described suspension ring and slide shaft connection mode are: at the bottom of suspension ring welding one nut, slide shaft and nut are threaded connection, and by another nut, slide shaft and suspension ring are solidly installed.

And the outer openings section of described guide groove is connected with respectively caging bolt.

And, the curved-surface structure of described claw hook for inwardly tightening up, its bottom one is shaped with outer lug.

And the middle part of described hanging scaffold and extension dish is shaped with respectively the centre hole of an axially-extending.

Advantage of the present utility model and good effect are:

This suspension hook can conveniently lift various curve surface work pieces with holes, and this suspension hook main parts size all adopts Fine Steel Casting iron, and does Quenching Treatment, in use not yielding, not easy to wear; By the curved design of suspension hook, can sling than the little workpiece of the minimum pitch circle diameter of hanging scaffold guide groove, and can guarantee that claw hook has enough intensity, hanging scaffold hole and extension dish Kong Jun have done extension design, have increased guidance quality and stability.This suspension hook not only can lift inner hole part, and it can also be lifted to the outer rim of part conversely, and its claw hook is made curved-surface structure and with the hanging scaffold assembly, coordinated and realize automatic tightening or the purpose of opening.The utility model design science is reasonable, simple in structure, is designed to the detouchable structure, is convenient to maintenance and with low cost.

The accompanying drawing explanation

Fig. 1 is perspective view of the present utility model;

Fig. 2 is the utility model working state schematic representation;

Fig. 3 is the working state schematic representation of the another kind of occupation mode of the utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing and by specific embodiment, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.

A kind of auto-tensioning three-jaw suspension hook, as shown in Figure 1, be comprised of hanging scaffold assembly and the vertical extension dish assembly slided on the hanging scaffold assembly.Described hanging scaffold assembly comprises suspension ring 1, slide shaft 2, hanging scaffold 5, described suspension ring are a circular ring type structure that is vertical setting, the bottom of these suspension ring and the upper end of slide shaft are solidly installed, for the ease of maintenance, suspension ring and slide shaft connection mode are: at the bottom of suspension ring welding one nut, slide shaft is threaded with slide shaft by nut, and then use a nut that slide shaft and suspension ring are solidly installed, bottom and the hanging scaffold of this slide shaft are solidly installed, it is fixedly mounted with mode: it is flat that the bottom of slide shaft is shaped with a heavy stand, the flat groove fit be shaped with the hanging scaffold lower surface of this heavy stand, purpose is that the anti-skidding axle rotates, for preventing that hanging scaffold from rocking, at the middle part of hanging scaffold, be shaped with the centre hole 9 of an axially-extending, this hanging scaffold radially evenly is shaped with three hold-down arms, on each hold-down arm, be shaped with the guide groove 6 of a U-shaped structure, described extension dish assembly comprises extension dish 3 and three claw hooks 4, the extension dish is a structure similar to described hanging scaffold, for preventing that the extension dish from rocking, at extension dish middle part, be shaped with the centre hole 10 of an axially-extending, this extension disc radial is shaped with three support arms equally, on each support arm, is shaped with the link slot of a U-shaped structure, by hinge, is hinged with claw hook in each link slot, the curved-surface structure design of this claw hook for inwardly tightening up, its bottom one is shaped with projection 8 laterally.

The connection mode of described hanging scaffold assembly and extension dish assembly is: the extension dish coaxially is slidably mounted on the slide shaft of suspension ring below, the lower end of these three claw hooks is corresponding being inlaid in the guide groove that hanging scaffold is shaped with respectively, in order to prevent that claw hook from deviating from, the outer openings section of these three guide grooves is connected with respectively caging bolt 7.

Principle of work of the present utility model is:

At first by the overhead traveling crane (not shown), hang up suspension ring, the hanging scaffold assembly is slowly moved up by the traction of overhead traveling crane, thereby the claw hook of extension dish assembly outwards struts workpiece 11 clampings along the hanging scaffold guide groove of hanging scaffold assembly, utilize the gravity of workpiece self to realize the purpose of stepping up, as shown in Figure 2.

The utility model can be used three claw hooks conversely, as shown in Figure 3, crown block hook hangs up seamless lifting chain (not shown), seamless lifting chain is suspended in two U-shaped grooves of hanging scaffold and on the support arm of a hanging scaffold, drive hanging scaffold assembly up-and-down movement, three claw hooks hang the outer rim of workpiece 12, and workpiece and gravity reach a force balance, thereby realize the purpose of lifting.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. auto-tensioning three-jaw suspension hook, it is characterized in that: formed by hanging scaffold assembly and the vertical extension dish assembly slided on the hanging scaffold assembly, described hanging scaffold assembly comprises suspension ring, slide shaft, hanging scaffold, described suspension ring are a circular ring type structure that is vertical setting, the bottom of these suspension ring and the upper end of slide shaft are solidly installed, bottom and the hanging scaffold of this slide shaft are solidly installed, and this hanging scaffold radially evenly is shaped with three hold-down arms, on each hold-down arm, are shaped with a guide groove;

2. auto-tensioning three-jaw suspension hook according to claim 1, it is characterized in that: described suspension ring and slide shaft connection mode are: at the bottom of suspension ring welding one nut, slide shaft and nut are threaded connection, and by another nut, slide shaft and suspension ring are solidly installed.

3. auto-tensioning three-jaw suspension hook according to claim 1 and 2, it is characterized in that: the outer openings section of described guide groove is connected with respectively caging bolt.

4. auto-tensioning three-jaw suspension hook according to claim 1 and 2 is characterized in that: the curved-surface structure of described claw hook for inwardly tightening up, its bottom one is shaped with outer lug.

5. auto-tensioning three-jaw suspension hook according to claim 4, it is characterized in that: the middle part of described hanging scaffold and extension dish is shaped with respectively the centre hole of an axially-extending.