CN87213206U

CN87213206U - Automatic unhooking hook

Info

Publication number: CN87213206U
Application number: CN 87213206
Authority: CN
Inventors: 赵钦; 常泽光
Original assignee: GLASS MACHINERY FACTORY QINHUANGDAO CITY
Current assignee: GLASS MACHINERY FACTORY QINHUANGDAO CITY
Priority date: 1987-09-11
Filing date: 1987-09-11
Publication date: 1988-03-02

Abstract

The utility model relates to an auto-release loading hook assembly attached to the hoisting and descent mechanism when wire ropes are loosened. The automatic unhooking hook is hung on the crane hook and connected with the wire ropes again. The dynamics theory of talus is used in the automatic unhooking hook. When weights are handled, the hook and swivel hook lock automatically; after handling when the wire ropes is loosened, the hook and the swivel hook unhook automatically; under the gravity of the hook, the hook can roll over automatically and make the aim of auto-release load realized. When the hook is used singly or the hook and the swivel hook are used together, all of the aims of automatic locking and auto-release load can be realized. Production efficiency can be increased and the safety in production can be ensured by using the device.

Description

Automatic unhooking hook

The present invention relates to a kind of cargo hook gear of throwing off load when loosening automatically that is attached to crane lifting or falls wirerope in the mechanism.

When using, wants traditional load hook artificial decoupling device, not only inconvenience but also dangerous.When lifting garden wood, garden steel, weight such as packed, the easiest casualty accident that causes.

By retrieval, No. 85200064.2 patent automatic decoupling devices issuing on February 5th, 1 of China.Its purpose is lifting manually decoupling device and throw off load automatically when finishing wirerope and loosening, for the alongshoreman provides safe trip mechanism.It is made into by coupler body, suspension hook, Slip Hook, hook, parts.Suspension hook is that a U type hook following side is provided with a pin shaft hole, connects by bearing pin and coupler body, and because of center of gravity is partial to turning cylinder, suspension hook can be sagging automatically.When suspension hook was propped up, the suspension hook shank can be hooked by Slip Hook, finished the work of handling weight.Slip Hook is a Z type hook, is contained in the slideway at coupler body middle part.The hook on Slip Hook top can hook the suspension hook shank; The Slip Hook bottom has a pin shaft hole that U type card can be installed, and U type card connects with wirerope during use.The afterbody of Slip Hook bottom is as pressing down handle.Between Slip Hook and coupler body pressure spring is housed, Slip Hook is pushed to the top and makes Slip Hook disengagement suspension hook shank under action of the spring, can fasten the suspension hook shank of propping up and press down the Slip Hook handle.Hanging handle is contained in place under the suspension hook shank, when Slip Hook fastens suspension hook, props up hanging handle the pin on the hanging handle is entered in the cotter way at Slip Hook top, and Slip Hook can not be upspring when loosing one's grip, and suspension hook can not overturn sagging.Readiness before the lifting that Here it is.During lifting, Slip Hook fastens under the suspension hook shank under loading and slides into the dead point, owing to Slip Hook glides the pin disengagement cotter way on the hanging handle is rotated.Slip Hook slides to coupler body top and the disengagement of suspension hook shank under the pressure spring effect when lifting end wirerope loosens, and suspension hook is upset downwards and wirerope disengagement under action of gravity own, reaches automatically-unhooked purpose.If wirerope all hangs on the suspension hook, Slip Hook is subjected to the effect less than down load, and Slip Hook is slack can not to throw off hanging handle, even handling finishes wirerope when loosening, Slip Hook still fastens the suspension hook shank, makes the suspension hook disengagement load of can not overturning downwards.Its weak point is in sum:

1, the readiness inconvenient operation before the lifting.Press down the Slip Hook handle again simultaneously because promptly will prop up suspension hook, unclamp the hand of holding up suspension hook and remove to draw hanging handle when the suspension hook shank is fastened Shi Caineng by Slip Hook, two hands just can unclamp after the pin on the hanging handle entered cotter way.Make its swing more bring the inconvenience of operation when one hand is depressed handle in addition.2, finish when handling, as run into weight and land deflection when the Slip Hook wirerope is loosened early than the suspension hook wirerope, will cause suspension hook to break off relations ahead of time, weight can fall down suddenly, the generation unsafe condition.3, having only suspension hook and Slip Hook to unite use could be automatically-unhooked; The independent use of suspension hook can not be automatically-unhooked.In addition, Slip Hook is to move in the slideway on coupler body, and slideway processing is complicated, easily deposits foreign matter in the open in the slideway and make the Slip Hook operational failure when using.

The objective of the invention is to avoid above-mentioned weak point of the prior art, provide a kind of easy and simple to handle, suspension hook to use separately and automatically-unhookedly can keep double hook to unite using automatically-unhooked again, safing Automatic unhooking hook.

Purpose of the present invention can reach by following measure:

Now that structure of the present invention and operation program is as follows by description of drawings, accompanying drawing is the front elevation of Automatic unhooking hook of the present invention.

This device is made up of parts such as suspension ring (1), tension spring (2), side plate (3), lower ring (8), dead-man's handle (4), extension pin (5), swivel hook (6), suspension hook (7), bearing pin (9) (10), little axles (11). Suspension hook (7) is close with the suspension hook of above-mentioned prior art, and difference is that shank is provided with an inclined-plane. Swivel hook (6) is similar to the Slip Hook effect of above-mentioned prior art, and Slip Hook is to slide up and down in the slideway of coupler body, rotates take bearing pin (10) as rotating shaft but swivel hook (6) does not slide. Rotate counterclockwise the left skew back face of its top square groove and can fasten suspension hook (7) shank inclined-plane; Clockwise rotate and to make swivel hook (6) throw off suspension hook (7) shank inclined-plane; Lower ring (8) is equipped with in swivel hook (6) bottom, and lower ring (8) is subjected to down load as the time spent swivel hook (6) to be rotated counterclockwise; Little axle (11) is housed in swivel hook (6) square groove links with tension spring one end, under the effect of spring, swivel hook (6) can clockwise rotate; Dead-man's handle (4) is equipped with in swivel hook (6) upper end, can drive swivel hook (6) and rotate counterclockwise and fasten suspension hook (7) shank to pressing down dead-man's handle (4), and the extension pin (5) that is contained on the dead-man's handle (4) is slipped in the upper cotter way of side plate (3) along side plate (3) edge.

During use, suspension hook (7) is propped up, depressed dead-man's handle (4) swivel hook (6) is rotated counterclockwise, its top slotted eye fastens the suspension hook shank, extension pin (5) is slipped in side plate (3) cotter way along side plate (3) edge, namely finished the front readiness of lifting.

When suspension hook (7) when using separately, under loading, the inclined-plane vertex of suspension hook (7) shank produces positive pressure to swivel hook (6) square groove upper left side inclined-plane, swivel hook under positive pressure (6) rotates counterclockwise, two inclined-planes tightly fasten, make the cotter way of hanging on pin (5) the disengagement side plate (3) simultaneously, get ready for automatically-unhooked.When handling end wirerope loosens, losing loading swivel hook (6) clockwise rotates under tension spring (2) effect, throw off on the inclined-plane, and suspension hook (7) overturns under action of gravity own and reaches automatically-unhooked purpose, has also reached suspension hook (7) and has used automatically-unhooked purpose separately.

When wirerope one end connects with following ring (8) on the swivel hook (6), it is two to be hooked together and to close use that the other end hangs on the suspension hook (7).Because two hooks all are subjected to the effect of weight load, swivel hook (6) rotates counterclockwise, thereby the inclined-plane on two hooks tightly fastens.Handling finishes, and when having only wirerope on swivel hook (6) and the suspension hook (7) all to loosen, the inclined-plane could be thrown off, suspension hook (7) unhook of could overturning, and it is reliable to have ensured that handling sheds the load process safe.

During the handling weight, for preventing that accident collision swivel hook (6) end is provided with dead-man's handle (4), to pressing down swivel hook (6) is rotated counterclockwise, when upwards lifting, dead-man's handle (4) is own freely to lift 90 °, can not drive swivel hook (6) and clockwise rotate, thereby avoid having guaranteed the safety of using because of dead-man's handle (4) lifts cause unnecessary automatically-unhooked.

With the employing of above-mentioned measure, the present invention has following advantage than No. 85200064.2 automatic decoupling devices of patent:

1, the preceding readiness of lifting is simple to operation;

2, suspension hook (7) can use automatically-unhooked separately;

3, suspension hook (7) and swivel hook (6) are united when using, and can early not make suspension hook (7) automatically-unhooked in advance because of swivel hook (6) wirerope loosens.

Because the existence of above-mentioned advantage is the Automatic unhooking hook that the user provides simple to operation, applicability is wide, safe and reliable.

Claims

1, a kind ofly is attached to crane lifting or falls wirerope in the mechanism cargo hook gear-Automatic unhooking hook of throwing off load when loosening automatically, it is characterized in that this device has the suspension hook (7) that rotates around fixed pin shaft (9), swivel hook (6) around fixed pin shaft (10) rotation, suspension hook (7) shank has an inclined-plane, the left side also is an inclined-plane in the square groove of swivel hook (6) top, ring (8) is equipped with down in swivel hook (6) bottom, and the end is provided with dead-man's handle (4), has one to hang pin (5) on handle (4).

2, the bevel angle on swivel hook according to claim 1 (6) and the suspension hook (7) is identical.