CN201358121Y

CN201358121Y - Lifting hook with sling slipping-prevention device

Info

Publication number: CN201358121Y
Application number: CNU2009200841938U
Authority: CN
Inventors: 王斌; 文朝辉; 王爱蓉; 文虎一; 兰中涛
Original assignee: JOINHAND CONSTRUCTION MACHINERY CO Ltd
Current assignee: JOINHAND CONSTRUCTION MACHINERY CO Ltd
Priority date: 2009-03-11
Filing date: 2009-03-11
Publication date: 2009-12-09
Anticipated expiration: 2019-03-11

Abstract

The utility model relates to a lifting hook, in particular to a lifting hook with a sling slipping-prevention device, belonging to the lifting mechanical equipment field. The hook consists of a lifting hook and a slipping-prevention device, wherein a bulge is made at the tail end of the vault of the lifting hook; a mounting hole of the slipping-prevention device is arranged on the bulge; and the slipping-prevention device is movably arranged on the lifting hook by a mounting bolt through the mounting hole of the slipping-prevention device. The slipping-prevention device consists of a sealing arm and a gravity arm that are connected in 90 degrees. In the utility model, as the weight of the gravity arm is bigger than that of the sealing arm, the sealing arm is tilted upwards due to the downward pulling force generated by natural sagging of the gravity arm, so as to seal the opening of the lifting hook. The utility model solves the problems that the use cost is increased and the unsafety factors are also increased as the slipping-prevention device of the existing lifting hook often needs to be repaired or replaced due to the failure of a spring caused by spring fatigue owing to frequent start of the slipping-prevention device. In addition, the lifting hook with the sling slipping-prevention device has the characteristics of simple structure, good economy and durability and convenient and reliable use, and is suitable for the lifting mechanical equipment in different types.

Description

A kind of suspension hook that has anti-hoist cable slippage device

Technical field:

The utility model relates to a kind of suspension hook, is specifically related to a kind of suspension hook that has anti-hoist cable slippage device, belongs to the lifting equipment field.

Background technology:

Suspension hook is the vitals on the lifting equipment, its action is to be used for hanging the wire rope sling that bolt is a weight, the quality of its safety performance directly influences the safe in utilization and operating personnel's of lifting equipment personal safety, and bolt to be the wire rope sling of weight generally all adopt the high-quality elastic wire to intersect is twisted into mutually, its existing good tension intensity, certain elasticity is arranged again, therefore, when suspension hook is hung steel rope, because the opening of suspension hook is an open type, often there is steel rope not allow situation of going in the suspension hook easy to hang, during lifting, steel rope occurs and break off relations, and cause safety misadventure.For the sake of security, load hook adopts ratchet to add the mode of extension spring or torsion spring usually at present, forms the anti-slip device of suspension hook, and the shortcoming of the anti-slip device of this kind form is: because the frequent unlatching of ratchet makes spring tired easily, cause inefficacy, need often maintenance or replacing, bring inconvenience very, increased the safety hazard of use cost and use to use, therefore in use be sought after a kind of more durable, and economical, convenient, the anti-slip device of failure-free suspension hook.

Summary of the invention:

The purpose of this utility model is: provide a kind of when suspension hook is worked, rely on the sagging naturally pulling force that produces of weight arm of anti-slip device, the closing arm of anti-slip device is upturned, rest on the opening that suspension hook bill inboard blocks suspension hook, thereby prevent that hoist cable slippage in the suspension hook from causing safety misadventure, and have simple in structure, economy and durability, the suspension hook that has anti-hoist cable slippage device of convenient and reliable characteristics.

The utility model is to realize above-mentioned purpose by following technical solution:

A kind of suspension hook that has anti-hoist cable slippage device, it is made of suspension hook and anti-slip device, it is characterized in that: the tail end of the curved vault of suspension hook is shaped on a projection, is shaped on anti-slip device mounting hole on the projection, and anti-slip device is movably arranged on the suspension hook through anti-slip device mounting hole by hold-down bolt.

Described anti-slip device is one to be the 90 hoop shapes that connect and compose of degree right angles by closing arm and weight arm, and the junction of its closing arm and weight arm is shaped on bolt hole.

The utility model beneficial effect compared with prior art is: this suspension hook that has anti-hoist cable slippage device is 90 degree right angles by closing arm and weight arm and connects and composes, adopt the sagging naturally pulling force that produces of weight arm, closing arm is upturned and blocks the opening of suspension hook.Avoided existing suspension hook to adopt ratchet to add the anti-slip device of suspension hook of extension spring or torsion spring composition,, needed often maintenance or replacing, made troubles, increased the problem of use cost and safety hazard to use because frequent unlatching makes spring fatigue cause inefficacy.Prevent the generation of wire rope sling unhook situation reliably, thereby stopped the safety misadventure that invar silk rope sling breaks off relations and caused.And have simple in structure, economy and durability, convenient and reliable characteristics.

Description of drawings:

Fig. 1 is the structural representation that has the suspension hook of anti-hoist cable slippage device;

Fig. 2 is the structural representation that has the anti-slip device of the suspension hook of preventing hoist cable slippage device;

Fig. 3 is the suspension hook structural representation that has the suspension hook of anti-hoist cable slippage device.

Among the figure: 1, suspension hook, 2, closing arm, 3, weight arm, 4, bolt hole, 5, anti-slip device, 6, projection, 7, anti-slip device mounting hole.

The specific embodiment:

This suspension hook that has anti-hoist cable slippage device is made of suspension hook 1 and anti-slip device 5, the tail end of suspension hook 1 curved vault is shaped on a projection 6, be shaped on anti-slip device mounting hole 7 on the projection 6, anti-slip device 5 is movably arranged on the suspension hook 1 by anti-slip device mounting hole 7 by hold-down bolt.

Anti-slip device 5 is one to be 90 degree right angles vertical mutually hoop shapes that connect and compose by closing arm 2 and weight arm 3, and the junction of its closing arm 2 and weight arm 3 is shaped on bolt hole 4, and purpose is to be convenient to installation and the replacing of anti-slip device 5 on suspension hook 1.

During installation, anti-slip device 5 is sleeved on the suspension hook 1, makes bolt hole 4 on the anti-slip device 5 be positioned at the both sides of projection 6 on the suspension hook 1, hold-down bolt through bolt hole 4 and anti-slip device mounting hole 7 is tightened up to get final product then.During work, by the staff weight arm 3 is upwards lifted, because of closing arm 2 and weight arm 3 are one to be 90 degree right angle and orthogonal integral body, closing arm 2 was rotated down and the suspension hook mouth is opened when weight arm 3 upwards lifted; Also can directly wire rope sling be pressed on the closing arm 2, closing arm 2 be rotated down and the suspension hook mouth is opened, wire rope sling is hung in the suspension hook by its gravity.The staff unclamps weight arm 3 then, and the closing arm 2 of anti-slip device 5 is upturned under the effect of the sagging downward pulling force that produces naturally at weight arm 3, blocks the opening of suspension hook, thereby prevents that hoist cable slippage in the suspension hook from causing safety misadventure.

The utility model is simple in structure, and manufacturing cost is low, and is easy to install, prevented the generation of wire rope sling unhook situation effectively.Avoided existing suspension hook to adopt ratchet to add the anti-slip device of suspension hook of extension spring or torsion spring composition, because frequent unlatching makes spring fatigue cause inefficacy, need often maintenance or replacing, make troubles to use, increase the problem of use cost and safety hazard, be applicable to various lifting equipments.

Claims

1, a kind of suspension hook that has anti-hoist cable slippage device, it is made of suspension hook (1) and anti-slip device (5), it is characterized in that: the tail end of the curved vault of suspension hook (1) is shaped on a projection (6), be shaped on anti-slip device mounting hole (7) on the projection (6), anti-slip device (5) is movably arranged on the suspension hook (1) through anti-slip device mounting hole (7) by hold-down bolt.

2, the suspension hook that has anti-hoist cable slippage device according to claim 1, it is characterized in that: described anti-slip device (5) is one to be the 90 hoop shapes that connect and compose of degree right angles by closing arm (2) and weight arm (3), and the junction of its closing arm (2) and weight arm (3) is shaped on bolt hole (4).