CN203359777U

CN203359777U - Telescopic hook falling prevention device for lifting hook

Info

Publication number: CN203359777U
Application number: CN 201320344910
Authority: CN
Inventors: 张伟钢; 陶闾庆; 黄永华; 朱海云
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2013-06-17
Filing date: 2013-06-17
Publication date: 2013-12-25
Anticipated expiration: 2023-06-17

Abstract

The utility model relates to the field of hoisting equipment, particularly to a hook falling prevention device for a lifting hook. The telescopic hook falling prevention device for the lifting device comprises a hoop, a connecting sleeve, a telescopic rod and a lifting hook, wherein the hoop comprises two parts, namely a fixing ring and a supporting arm; the fixing ring is fixedly mounted on the lifting hook in a sleeving manner; the top end of the connecting sleeve is hinged to the stretch-out end of the supporting arm; the connecting sleeve is positioned at the upper part of an opening of the lifting hook; the top end of the telescopic rod is arranged inside the connecting sleeve; the telescopic rod has a retraction position and a stretch-out position; when the telescopic rod is placed at the retraction position, the telescopic rod naturally drops; when the telescopic rod is placed at the stretch-out position, the bottom end of the telescopic rod is erected on a hook point of the lifting hook. According to the utility model, the telescopic rod can be raised easily to relieve unhooking and complete hook detachment, so that the man-machine linkage hook detachment operation is avoided, and further the production safety is guaranteed; besides, the activity space of a lifting lug inside the lifting hook is enlarged, so that the telescopic falling prevention device is applied to the hook falling prevention requirements of rigging, various special lifting fixtures and the like.

Description

Telescopic lifting hook looseness preventing device

Technical field

The utility model relates to the weight-lifting equipment field, relates in particular to a kind of suspension hook Anti-hook releasing device.

Background technology

As shown in Figure 1, the anti-drop device of at present domestic and international weight-lifting equipment hook generally adopts the elastic reset formula.These Anti-hook releasing devices can prevent soft rigging unexpected unhook in the handling process effectively.But, in iron and steel enterprise or other heavy enterprises, weight-lifting equipment, except utilizing the rigging lift cargo, is more the handling work of product, material that completes by means of special hanger, frock etc.Now, the Anti-hook releasing device of original two kinds of forms inapplicable.The main defect that has following three aspects::

1. the unload hook of lifting job after completing normally manually used the hand propelled spring-latch, then decline by suspension hook or complete when other direction moves, and the mode of operation of this man-machine interlock exists potential safety hazard;

2. special hanger or frock itself has certain height and a width.When the large-scale barreled material of handling or underground dell material, all exist can't the loading, unloading hook embarrassment.The field staff is difficult to operation, can only unload hook by with long bamboo bar, promoting lifting hook looseness preventing device, or interim dismounting Anti-hook releasing device meet handling work;

3. vertical volume hangs or the handling of other pure mechanical Special-purpose hanger fixture are that the operating personal of hoisting crane completes the handling of object automatically by loose hook and lifting.Now, due to the restriction that is subject to Anti-hook releasing device, the hanger of sling and jig activity space in the hook chamber is less, and excessive loose hook is easy to cause the damage of anti-drop device, and then produces the unhook phenomenon.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of telescopic lifting hook looseness preventing device, this device is by the purpose that locking reaches lock hook that moves down of expansion link, and can easily expansion link be lifted to removing has broken off relations unloads hook, avoid man-machine interlock to unload the hook operation, guaranteed production safety.

The utility model is achieved in that a kind of telescopic lifting hook looseness preventing device, comprise anchor ear, adapter sleeve, expansion link and suspension hook, described anchor ear consists of mounting ring and hold-down arm two parts, described mounting ring is fixedly set on suspension hook, the top of described adapter sleeve is hinged on the external part of hold-down arm, adapter sleeve is positioned at the opening top of suspension hook, described expansion link top is arranged in adapter sleeve, expansion link has retracts and stretches out two positions, when expansion link during in retracted position, expansion link naturally droops, when expansion link during in extended position, the bottom of expansion link rides on the bill of suspension hook.

Described mounting ring and hold-down arm are as a whole.

Described mounting ring is bolted and is sleeved on suspension hook.

Offer chute on described adapter sleeve, be provided with two limited mouths on described chute, the top of described expansion link is provided with sliding pin, and described sliding pin matches with chute and limited mouth.

The telescopic lifting hook looseness preventing device of the utility model reaches the purpose of lock hook by the locking that moves down of expansion link, and can easily expansion link be lifted to removing has broken off relations unloads hook, has avoided man-machine interlock to unload the hook operation, has guaranteed production safety; Therefore anchor ear in the utility model is installed on suspension hook hook neck top in addition, has increased the activity space of hanger in suspension hook, is not only applicable to the rigging class, also is applicable to the lock hook requirement of all kinds of Special-purpose hanger fixtures etc.

The accompanying drawing explanation

Fig. 1 is existing lifting hook looseness preventing device structural representation;

Fig. 2 is the schematic diagram of the telescopic lifting hook looseness preventing device of the utility model in the lifting state;

Fig. 3 is the schematic diagram of the utility model in the unhook state;

The schematic top plan view that Fig. 4 is anchor ear in the utility model;

The structural representation that Fig. 5 is adapter sleeve in the utility model.

In figure: 1 anchor ear, 2 adapter sleeves, 3 expansion links, 4 suspension hooks, 5 mounting rings, 6 hold-down arms, 7 bolts, 8 chutes, 9 limited mouths, 10 sliding pins.

The specific embodiment

Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only are not used in restriction scope of the present utility model for the utility model is described.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model statement, these equivalent form of values fall within the application's appended claims limited range equally.

Embodiment 1

As Fig. 2, 3, shown in 4, a kind of telescopic lifting hook looseness preventing device, comprise anchor ear 1, adapter sleeve 2, expansion link 3 and suspension hook 4, described anchor ear 1 consists of mounting ring 5 and hold-down arm 6 two parts, mounting ring 5 and hold-down arm 6 in the present embodiment are as a whole, described mounting ring 5 is fixedly set on suspension hook 4 by bolt 7, the top of described adapter sleeve 2 is hinged on the external part of hold-down arm 6, adapter sleeve 2 is positioned at the opening top of suspension hook 4, described expansion link 3 tops are arranged in adapter sleeve 2, expansion link 3 has retracts and stretches out two positions, when expansion link 3 during in retracted position, expansion link 3 naturally droops, when expansion link 3 during in extended position, the bottom of expansion link 3 rides on the bill of suspension hook 4.

As shown in Figure 5, in the present embodiment, for the retraction that realizes simply and easily expansion link 3 with stretch out two operations, offer chute 8 on described adapter sleeve 2, be provided with two limited mouths 9 on described chute 8, the top of described expansion link 3 is provided with sliding pin 10, and described sliding pin 10 matches with chute 8 and limited mouth 9; When expansion link 3 during in retracted position sliding pin 10 be stuck in the limited mouth 9 that is arranged in top, now suspension hook is positioned at the unhook state, when expansion link 3 during in extended position sliding pin 10 be stuck in the limited mouth 9 that is arranged in below, now suspension hook is positioned at the lifting state; While unloading hook, by mobile sliding pin 10, expansion link 3 is retracted into to a high position, adapter sleeve 2 and expansion link 3 are naturally thrown off sagging under Action of Gravity Field, the potential safety hazard of man-machine interlock operation while effectively avoiding Xie Hook.

Claims

1. a telescopic lifting hook looseness preventing device, it is characterized in that: comprise anchor ear (1), adapter sleeve (2), expansion link (3) and suspension hook (4), described anchor ear (1) consists of mounting ring (5) and hold-down arm (6) two parts, described mounting ring (5) is fixedly set on suspension hook (4), the top of described adapter sleeve (2) is hinged on the external part of hold-down arm (6), adapter sleeve (2) is positioned at the opening top of suspension hook (4), described expansion link (3) top is arranged in adapter sleeve (2), expansion link (3) has retracts and stretches out two positions, when expansion link (3) during in retracted position, expansion link (3) naturally droops, when expansion link (3) during in extended position, the bottom of expansion link (3) rides on the bill of suspension hook (4).

2. telescopic lifting hook looseness preventing device as claimed in claim 1, it is characterized in that: described mounting ring (5) and hold-down arm (6) are as a whole.

3. telescopic lifting hook looseness preventing device as claimed in claim 1, it is characterized in that: described mounting ring (5) is fixedly set on suspension hook (4) by bolt (7).

4. telescopic lifting hook looseness preventing device as claimed in claim 1, it is characterized in that: offer chute (8) on described adapter sleeve (2), be provided with two limited mouths (9) on described chute (8), the top of described expansion link (3) is provided with sliding pin (10), and described sliding pin (10) matches with chute (8) and limited mouth (9).