CN85200064U

CN85200064U - Automatic load-disengaging hook

Info

Publication number: CN85200064U
Application number: CN 85200064
Authority: CN
Inventors: 邹先春
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-04-01
Filing date: 1985-04-01
Publication date: 1985-10-10

Abstract

The utility model relates to an automatic load-disengaging hook device for lifting goods, which is composed of a lifting hook, a slide hook, a pressure spring, a hanging handle, a body frame, etc., wherein, a hole which is arranged on the lifting hook deviates from the center of the gravity of the lifting hook, the lifting hook is positioned on the lower end of the body frame by that a pin shaft penetrates through the hole, and the lifting hook which is rotatable is provided with the hanging handle of which the middle part is fixed with a pin; the lower end of the pressing spring fixed to the inner part of the body frame acts on the body frame, and the upper end jacks up the slide hook which can slide freely in the body frame under the condition of overcoming the spring force; the lower end of the slide hook is connected with a lifting rope, and the upper end can be hung by the hanging handle.

Description

Automatic Load-disengaging hook

The present invention a kind ofly can be widely used in the device on the load hook in the occasions such as forest zone, mine, harbour, station.The specific function of this device is: under the dangerous big situation of artificial decoupling device, without any need for external force, just can realize automatically-unhooked.

Fell in the forest zone, have a clasp that suspension hook is fastened on the general suspension hook that uses in the cableway transportation, fixing with the dowel perforation again.After treating that lifting puts in place, need workman's hand to hold stock, firmly disclose disconnected dowel, timber scatters suddenly.In addition, in the banking up of timber depot and brow, car loading operation, remain choker so far and manually tie wood.These method of operation labour intensity are big, inefficiency, and very dangerous.

In recent years, the people is all arranged at the development automatic decoupling device both at home and abroad, announce clear 55-32634 1980 as Japanese Patent Laid, shown in figure (6), this trip mechanism is controlled by pneumatic.Though it does not need manual decoupling device to reach automatically-unhooked purpose, need complicated pneumatic equipment, and when breaking off relations, also need the people to handle pneumatic equipment.

All kinds such as the domestic automatic decoupling device of development in recent years has rod-pulling type, the formula of meeting and discussing, weight hammer type.The rod-pulling type automatic decoupling device is in the inner grooving of coupler body, hollows out, load onto part in addition such as extension spring, pull bar, elasticity flap, though this detacher can reach automatically-unhooked purpose, but trouble is that the workman needs to haul hoisting line with hand always before the suspension hook load, just can loose one's grip Deng after the lifting, so very dangerous.Weight hammer type automatic decoupling device cardinal principle is to fall to causing that by weight suspension hook rotates realizes breaking off relations.Force of inertia when the main problem of this device is the weight whereabouts is wayward, also exists the danger of breaking off relations when being about to lifting, and is therefore very dangerous.The vital parts of the formula of meeting and discussing automatic decoupling device is meet and discuss connecting rod and shackle hook.Suspension hook falls always when hoisting crane unloads, and has contacted weight up to meeting and discussing and withdraws, and the rotation of suspension hook get out of hand is fallen realize automatically-unhooked.It not necessarily just in time is a power vertically upward of running into that the subject matter of this detacher is to meet and discuss when falling, and therefore can not guarantee disposable unhook, poor reliability.(see " forestry machinery " 83 years 5 phase 38 pages).

At above problem, for making the absolute reliable and safety of automatic decoupling device, the present invention must solve following problem:

When (1) workman hung over hoisting line on the suspension hook, hoisting line can not come off.

(2) when finishing the unloading of lifting process, but can be automatically-unhooked.

(3) slinger finishes after the preparation of lifting work, can withdraw from outside the dangerous area lifting then.

(4) do not have slippage danger in the lifting process.

Just can be automatically-unhooked when (5) unloading without any need for external force, and flexibility and reliability.

According to above these problems, technical solution of the present invention is shown in figure (): designed with suspension hook (4), Slip Hook (8), stage clip (11), hanging handle (2) and main frame parts such as (I) automatic decoupling device for its feature.A hole of departing from center of gravity is arranged on its suspension hook (4), pass the lower end that the hole is positioned suspension hook main frame (I) by bearing pin (17).Suspension hook can rotate.The middle part of suspension hook also has a rotary hanging handle (2) that is connected by pin (c6).The inside that a pin (c5) spring (11) is contained in main frame is being fixed at the middle part of hanging handle, and the lower end of spring acts on the main frame, and the upper end is with Slip Hook (8) jack-up.Slip Hook (8) is gone up also has a little hook (3), and little hook (3) is located in the upper end (19) of Slip Hook by screw retention.After having overcome the power of stage clip (11), Slip Hook (8) can in the middle of main frame, be free to slide.Pin (c5) on the hanging handle (2) on the suspension hook (4) can hang on the little hook (3) on the Slip Hook (8) of downslide, the top (20) that the while Slip Hook has also blocked suspension hook, the bottom of Slip Hook is connecting hoisting line (16), and above-mentioned parts are contained within the shell (6).

The principle of work of this device is described with figure now.Figure (two) is the state of nature of this device before lifting.Slip Hook this moment (8) is by the complete jack-up of spring (11), and suspension hook (4) also falls because of top has lost to control to change.Figure (three) is the state of preparation lifting.Earlier Slip Hook (8) is pressed down slip with manpower, make it to block the top of the suspension hook (4) that goes back to original position, tangle little hook (3) on the Slip Hook (8) with the pin (c5) on the hanging handle (2) again, the workman just can hang over hoisting line on the suspension hook (4) in this state, and can withdraw from the dangerous area.Shown in figure (four), when hoisting crane begins lifting and whole device begins when stressed, Slip Hook (8) continues to glide under the effect of lifting power, the hook portion (19) of Slip Hook (8) has withstood hanging handle (2), hanging handle (2) therefore is open, for unhook is got ready, Slip Hook (8) has also blocked suspension hook (4) more firmly simultaneously.This device just is in this state in whole lifting operational process.Shown in figure (five), behind the hoisting crane complete discharge, the gravity on the Slip Hook (8) also just disappears thereupon, and with the complete jack-up of Slip Hook (8), suspension hook this moment (4) is get out of hand once more again for compressed spring (11), and rotation is fallen naturally, has realized automatically-unhooked.

After its advantage of this automatic decoupling device is that the workman hangs over hoisting line on the suspension hook, do not wait lifting just can leave weight, this is very safe.And and when unloading is broken off relations flexible movements reliable.

Fig. 1: the principle and the structure of expression automatic decoupling device of the present invention.

Fig. 2: the state of nature before the expression lifting.

Fig. 3: the state during expression preparation lifting.

Fig. 4: the state in the expression lifting process.

Fig. 5: the expression unloading is automatically-unhooked.

Fig. 6: Japanese pneumatic trip mechanism.

Claims

1, the automatically-unhooked device on a kind of load hook is made of suspension hook, spring and main frame etc.It is characterized in that the hole and the rotary hanging handle [2] that have one to depart from center of gravity on the suspension hook [4], a pin [c5] is being fixed at the middle part of hanging handle, a little hook [3] is being fixed in the upper end of Slip Hook [8], the lower end of Slip Hook [8] is connecting hoisting line, stage clip [11] is contained in the inside of main frame [I], and its lower end acts on the main frame [I], and the upper end is with Slip Hook [8] jack-up.

2, according to the automatic decoupling device on the load hook described in the claim 1., it is characterized in that suspension hook (4) passes eccentric orfice with bearing pin (17), suspension hook (4) is positioned the lower end of main frame (I), suspension hook (4) can rotate.

3, according to the automatic decoupling device on the load hook described in the claim 1., it is characterized in that Slip Hook (8) has overcome after the elastic force of stage clip (11), can be in main frame (I) the bill part of downslide ， And and Slip Hook (8) can block the upper end of suspension hook (4).

4, according to the automatic decoupling device on the load hook described in the claim 1., the pin (c5) that it is characterized in that hanging handle (2) middle part can tangle on the little hook (3) on the Slip Hook (8).