CN110228750B

CN110228750B - Lifting hook rigging

Info

Publication number: CN110228750B
Application number: CN201910497436.9A
Authority: CN
Inventors: 不公告发明人
Original assignee: Hainan Longpan Oilfield Technology Co ltd
Current assignee: Hainan Longpan Oilfield Technology Co.,Ltd.
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-09-25
Anticipated expiration: 2039-06-10
Also published as: CN110228750A

Abstract

The invention belongs to the technical field of hoisting machinery equipment, and particularly relates to a lifting hook rigging, which comprises a hook body, wherein a section B of the hook body is provided with a sliding hole, and a first piston rod is connected in the sliding hole in a sliding manner; one end of the first piston rod, which is positioned outside the sliding hole, is fixedly connected with a transverse plate; the top of the hook body is provided with a threaded connecting rod; an arc-shaped groove is formed in the hook body close to one side of the threaded connecting rod; a locking rod is connected in the arc-shaped groove in a sliding manner, and a spring is fixedly connected between the locking rod and the bottom of the arc-shaped groove; the bottom of the sliding hole is communicated with the arc-shaped groove through a pipeline; according to the invention, the transverse plate is pressed down through the chain lock, the first piston rod is driven to generate compressed gas at the bottom of the sliding hole, the compressed gas enters the arc-shaped groove through the pipeline, the locking rod is pushed to slide and extend out of the arc-shaped groove, the extended locking rod clamps the A end of the column hook body, the chain lock is locked, the unhooking of the workpiece in the process of lifting and transporting is prevented, and the potential safety hazard is reduced.

Description

Lifting hook rigging

Technical Field

The invention belongs to the technical field of hoisting machinery equipment, and particularly relates to a lifting hook rigging.

Background

A hook is one of the most common lifting tools in lifting machinery. The hook is often suspended from the wire rope of the hoisting mechanism by means of a pulley block or the like. The single hook is simple to manufacture and convenient to use, but has poor stress condition, and is mostly used in working occasions with the lifting capacity of less than 80 tons; when the lifting capacity is large, double hooks with symmetrical stress are often adopted. The laminated lifting hook is formed by riveting a plurality of steel plates formed by cutting, the whole lifting hook cannot be damaged when cracks appear on individual plates, the safety is better, the dead weight is larger, and the laminated lifting hook is mostly used on a crane for lifting a large load or a lifting molten steel ladle. The lifting hook is often impacted in the operation process and needs to be made of high-quality carbon steel with good toughness.

The lifting hook is one of the most common lifting appliances in the hoisting equipment, and is suspended on a steel wire rope of a hoisting mechanism of the hoisting equipment by means of elements such as a pulley block and the like; the object to be hoisted is bound by a steel wire rope or a chain lock and then hung on a lifting hook, so that hoisting can be carried out; the more general lifting hook that uses at present is the goat's horn lifting hook, and the lifting hook takes place rope or chain tool to lock easily and drops and lead to staff's safety to go wrong at the hoist and mount in-process, simultaneously because rope or chain tool to lock weight are great, wastes time and energy when making uninstallation rope or chain tool to lock, has increased operation workman's intensity of labour, has reduced work efficiency.

Disclosure of Invention

The invention provides a lifting hook rigging, which aims to make up the defects of the prior art and solve the problem that the safety of workers is caused by the fact that a rope or a chain lock is easy to fall off in the lifting process of a lifting hook, and meanwhile, due to the fact that the weight of the rope or the chain lock is large, time and labor are wasted when the rope or the chain lock is unloaded, the labor intensity of operators is increased, and the working efficiency is reduced.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a lifting hook rigging, which comprises a hook body, wherein a section B of the hook body is provided with a sliding hole, and a first piston rod is connected in the sliding hole in a sliding manner; one end of the first piston rod, which is positioned outside the sliding hole, is fixedly connected with a transverse plate; the top of the hook body is provided with a threaded connecting rod; an arc-shaped groove is formed in the hook body close to one side of the threaded connecting rod; a locking rod is connected in the arc-shaped groove in a sliding manner, and a spring is fixedly connected between the locking rod and the bottom of the arc-shaped groove; the bottom of the sliding hole is communicated with the arc-shaped groove through a pipeline; through the mutual matching among the transverse plate, the first piston rod, the sliding hole, the arc-shaped groove and the locking rod, when the chain lockset is hung on the hook body, the locking rod is popped out, so that the chain lockset is prevented from being unhooked, and the workpiece is prevented from being damaged; when a workpiece needs to be lifted, a chain lock with the workpiece fixed is hung on the hook body, the chain lock presses down the transverse plate, the transverse plate drives the first piston rod to move to generate compressed gas at the bottom of the sliding hole, the compressed gas enters the arc-shaped groove through the pipeline, the locking rod is pushed to slide and extend out of the arc-shaped groove, the extended locking rod clamps the A end of the hook body of the column, the chain lock is locked, and the workpiece is prevented from being unhooked in the process of lifting and transporting the workpiece, so that the workpiece is prevented from being damaged and casualty accidents are prevented; after the workpiece is hoisted in place, the hook body is put down through the electric hoist, the pressure on the transverse plate is released by the chain lock at the moment, the locking rod is reset under the action of the spring, the locking rod is opened, the chain lock and the workpiece are taken down from the hook body, and the work of hoisting the workpiece is completed.

Preferably, a first pulley is arranged on the part of the hook body close to the threaded connecting rod; a groove is formed in the hook body corresponding to the first pulley, and a cylinder is fixedly connected in the groove; a second piston rod is connected in the cylinder in a sliding manner, and one end, positioned on the outer side of the cylinder, of the second piston rod is far away from the first pulley; one end of the second piston rod, which is positioned at the outer side of the cylinder, is rotatably connected with a second pulley; a steel wire rope is arranged in the hook body and is attached along the section B of the hook body; one end of the steel wire rope is fixedly connected with the end A of the hook body, and the other end of the steel wire rope is fixedly connected with the groove by bypassing the first pulley and the second pulley; an air storage chamber is arranged on one side of the sliding hole and is communicated with the bottom of the sliding hole through a one-way valve; the air cylinder is communicated with the air storage chamber through an air valve and a pipeline; the first pulley, the second pulley, the cylinder, the steel wire rope, the air valve and the air storage chamber are matched with each other, and the steel wire rope is tightened after the hoisting is finished, so that the chain lock is smoothly put down; when the workpiece is lifted through the hook body, compressed gas is generated in the sliding hole, part of the compressed gas is stored in the gas storage chamber through the one-way valve, when the workpiece is lifted to a preset position, the locking rod is opened, at the moment, because the weight of the locking rod and the workpiece is large, time and labor are wasted when workers manually take off the chain lifting appliance, the workers can pull the gas valve and then introduce the compressed gas in the gas storage chamber into the cylinder through a pipeline, push the second piston rod to extend out, tension the steel wire rope through the second pulley by the second piston rod, and unhook the chain lockset from the hook body after the steel wire rope at the section B of the hook body is straightened, so that the labor intensity of the workers is further reduced, and.

Preferably, a group of arc-shaped vent holes are uniformly distributed on the inner circumference of the first pulley, and the vent holes are communicated with a central hole in the center of the first pulley; the central hole is communicated with the bottom of the sliding hole through a pipeline; the vent hole is used for blowing away oxide skin impurities adhered to the steel wire rope to prevent the first pulley and the second pulley from being blocked; compressed gas generated in the sliding hole enters the central hole through the pipeline and is sprayed out spirally through the vent hole, so that chip impurities such as oxide skins falling off from a workpiece adhered to the steel wire rope are blown off, the pulley and the pulley are prevented from being blocked by the chip impurities, friction between the steel wire rope and the pulley and the friction between the steel wire rope and the pulley are reduced, and the service life of the steel wire rope is further prolonged.

Preferably, a group of reset springs is fixedly connected between the steel wire rope and the section B of the hook body, and the reset springs are used for restoring the steel wire rope to the original position after the steel wire rope pushes the chain lock to be unhooked; the reset spring is of a hollow structure, and is pressed to blow away impurities on the workpiece so as to prevent the steel wire rope from being clamped; can restore to the throne with promoting the wire rope behind the chain tool to lock unhook through reset spring, conveniently lift by crane the operation next time, the hollow structure of reset spring in reset spring after tensile deformation simultaneously produces compressed gas, and compressed gas blows away remaining cinder piece and impurity of the B section of coupler body, further keeps the cleanness of coupler body and wire rope, reduces the piston rod of piece impurity card post No. one.

Preferably, the transverse plate is made of an elastic material, and the transverse plate with two ends slidably connected with the section B of the hook body can prevent oxide scale debris of a lifted workpiece from entering the lower part of the transverse rod and hindering the normal sliding of the first piston rod; the transverse plate is also internally provided with a group of air blowing holes, the air blowing holes are communicated with the bottom of the sliding hole through an air blowing channel in the first piston rod, and the air blowing holes are matched with the air blowing channel to blow away dust and oxide skin adhered to a workpiece or a chain lock, so that the first piston rod below the transverse plate is further kept clean; a sliding seal is formed between the two ends of the transverse plate and the section B of the hook body, so that fragments such as oxide skin are further prevented from entering the lower portion of the transverse plate to block the first piston rod from working, meanwhile, the transverse plate drives the first piston rod to move to generate compressed gas, and a part of the compressed gas is blown out of the gas blowing hole through the gas blowing channel to blow away the residual oxide skin fragments on the transverse plate, so that the fragments and impurities are further prevented from blocking the movement of the first piston rod.

Preferably, the transverse plate is fixedly connected with an elastic air bag, two thirds of the volume of air is filled in the elastic air bag, and the elastic air bag is used for wrapping and fixing the chain lock so as to prevent the chain lock from shaking to rub the hook body, so that the stability of a lifted workpiece is further improved; when the chain lock connected with the workpiece is hung on the hook body, the chain lock compresses the elastic air bag, the chain lock is wrapped after the elastic air bag deforms, the chain lock is prevented from shaking on the hook body, friction between the chain lock and the hook body is reduced, the service life of the hook body is prolonged, meanwhile, the workpiece connected with the chain lock is further reduced to shake, and the safety of workpiece hoisting operation is further improved.

The invention has the following beneficial effects:

1. according to the lifting hook rigging, the transverse plate is pressed down through the chain lock, the first piston rod is driven to generate compressed gas at the bottom of the sliding hole, the compressed gas enters the arc-shaped groove through the pipeline, the locking rod is pushed to slide and extend out of the arc-shaped groove, the extended locking rod clamps the A end of the column hook body to lock the chain lock, and the phenomenon that the workpiece is broken and casualty accidents are caused due to unhooking in the process of lifting and transporting the workpiece is avoided.

2. According to the lifting hook rigging, compressed gas is generated in the sliding hole when a workpiece is lifted through the hook body and stored in the gas storage chamber, after the workpiece lifting work is completed, the gas valve is pulled to introduce the compressed gas into the cylinder through the pipeline, the second piston rod is matched with the second pulley, the steel wire rope located at the section B of the hook body is straightened, and then the chain lock is unhooked from the hook body, so that the labor intensity of workers is further reduced, and the production efficiency is improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at C;

FIG. 3 is an enlarged view of a portion of FIG. 1 at D;

FIG. 4 is a block diagram of the first pulley of the present invention;

in the figure: the hook comprises a hook body 1, a sliding hole 2, a first piston rod 3, a transverse plate 4, a threaded connecting rod 5, an arc-shaped groove 6, a locking rod 7, a first pulley 8, a cylinder 9, a second piston rod 10, a second pulley 11, a steel wire rope 12, an air storage chamber 13, an air valve 14, an air vent 15, a central hole 16, a return spring 17, an air blowing hole 18, an air blowing channel 19 and an elastic air bag 20.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the lifting hook rigging of the invention comprises a hook body 1, a section B of the hook body 1 is provided with a sliding hole 2, and a first piston rod 3 is connected in the sliding hole 2 in a sliding manner; one end of the first piston rod 3, which is positioned outside the sliding hole 2, is fixedly connected with a transverse plate 4; the top of the hook body 1 is provided with a threaded connecting rod 5; an arc-shaped groove 6 is formed in the hook body 1 close to one side of the threaded connecting rod 5; a locking rod 7 is connected in the arc-shaped groove 6 in a sliding manner, and a spring is fixedly connected between the locking rod 7 and the bottom of the arc-shaped groove 6; the bottom of the sliding hole 2 is communicated with the arc-shaped groove 6 through a pipeline; through the mutual matching among the transverse plate 4, the first piston rod 3, the sliding hole 2, the arc-shaped groove 6 and the locking rod 7, when the chain lock is hung on the hook body 1, the locking rod 7 is popped out, so that the chain lock is prevented from being unhooked, and the workpiece is prevented from being damaged; when a workpiece needs to be lifted, a chain lock with the workpiece fixed is hung on the hook body 1, the chain lock presses down the transverse plate 4, the transverse plate 4 drives the first piston rod 3 to move to generate compressed gas at the bottom of the sliding hole 2, the compressed gas enters the arc-shaped groove 6 through a pipeline, the locking rod 7 is pushed to slide and extend out of the arc-shaped groove 6, the extended locking rod 7 is clamped at the A end of the column hook body 1 to lock the chain lock, and the phenomenon that the workpiece is unhooked in the process of lifting and transporting the workpiece, so that the workpiece is damaged and casualty accidents are prevented; after the workpiece is hoisted in place, the hook body 1 is put down through the electric hoist, the pressure on the transverse plate 4 is released by the chain lock at the moment, the locking rod 7 is reset under the action of the spring, the locking rod 7 is opened, the chain lock and the workpiece are taken down from the hook body 1, and the work of hoisting the workpiece is completed.

As an embodiment of the invention, the part of the hook body 1 close to the threaded connecting rod 5 is provided with a first pulley 8; a groove is formed in the hook body 1 corresponding to the first pulley 8, and a cylinder 9 is fixedly connected in the groove; a second piston rod 10 is connected in the cylinder 9 in a sliding manner, and one end, located on the outer side of the cylinder 9, of the second piston rod 10 is far away from the first pulley 8; one end of the second piston rod 10, which is positioned at the outer side of the air cylinder 9, is rotatably connected with a second pulley 11; a steel wire rope 12 is arranged in the hook body 1, and the steel wire rope 12 is arranged along the section B of the hook body 1 in a fitting mode; one end of the steel wire rope 12 is fixedly connected with the end A of the hook body 1, and the other end of the steel wire rope is fixedly connected with the groove by bypassing the first pulley 8 and the second pulley 11; an air storage chamber 13 is arranged on one side of the sliding hole 2, and the air storage chamber 13 is communicated with the bottom of the sliding hole 2 through a one-way valve; the air cylinder 9 is communicated with an air storage chamber 13 through an air valve 14 and a pipeline; through the mutual matching of the first pulley 8, the second pulley 11, the air cylinder 9, the steel wire rope 12, the air valve 14 and the air storage chamber 13, the steel wire rope 12 is pulled tightly after the hoisting is finished, so that the chain lock is smoothly put down; when the workpiece is lifted through the hook body 1, compressed gas is generated in the sliding hole 2, a part of the compressed gas is stored in the gas storage chamber 13 through the one-way valve, when the workpiece is lifted to a preset position, the locking rod 7 is opened, at the moment, because the weight of the locking rod 7 and the workpiece is large, time and labor are wasted when a worker manually takes off the chain lifting appliance, the worker can pull the gas valve 14 and then introduce the compressed gas in the gas storage chamber 13 into the cylinder 9 through a pipeline, push the second piston rod 10 to extend out, tension the steel wire rope 12 through the second pulley 11 by the second piston rod 10, and after the steel wire rope 12 located at the section B of the hook body 1 is straightened, the chain lock is unhooked from the hook body 1, so that the labor intensity of the worker is further reduced.

As an embodiment of the invention, a group of arc-shaped vent holes 15 are uniformly distributed on the inner circumference of the first pulley 8, and the vent holes 15 are communicated with a central hole 16 in the center of the first pulley 8; the central hole 16 is communicated with the bottom of the slide hole 2 through a pipeline; the vent hole 15 is used for blowing away oxide scale impurities adhered to the steel wire rope 12 and preventing the first pulley 8 and the second pulley 11 from being locked; compressed gas generated in the slide hole 2 enters the central hole 16 through a pipeline and is spirally sprayed out through the vent hole 15, so that scrap impurities such as oxide skin and the like falling off from a workpiece adhered to the steel wire rope 12 are blown off, the first pulley 8 and the second pulley 11 are prevented from being blocked by the scrap impurities, friction between the steel wire rope 12 and the first pulley 8 and the second pulley 11 is reduced, and the service life of the steel wire rope 12 is further prolonged.

As an embodiment of the invention, a group of return springs 17 is fixedly connected between the steel wire rope 12 and the section B of the hook body 1, and the return springs 17 are used for returning to the original position after the steel wire rope 12 pushes the chain lock to unhook; the reset spring 17 is of a hollow structure, and the reset spring 17 is pressed to blow away impurities on the workpiece so as to prevent the steel wire rope 12 from being clamped; can reset promoting wire rope 12 after chain lock unhook through reset spring 17, conveniently lift by crane the operation next time, reset spring 17 after tensile deformation produces compressed gas in reset spring 17's hollow structure simultaneously, and compressed gas blows away remaining cinder piece and impurity of coupler body 1's B section, further keeps the cleanness of coupler body 1 and wire rope 12, reduces piston rod 3 No. one of piece impurity card post.

As an embodiment of the invention, the transverse plate 4 is made of an elastic material, and the transverse plate 4 with two ends slidably connected with the section B of the hook body 1 can prevent oxide scale debris of a lifted workpiece from entering the lower part of the transverse plate and hindering the normal sliding of the first piston rod 3; a group of air blowing holes 18 are further formed in the transverse plate 4, the air blowing holes 18 are communicated with the bottom of the sliding hole 2 through air blowing channels 19 in the first piston rod 3, the air blowing holes 18 are matched with the air blowing channels 19 to blow away dust and oxide scales adhered to workpieces or chain locks, and the first piston rod 3 below the transverse plate 4 is further kept clean; slide seal is formed by the two ends of the transverse plate 4 and the section B of the hook body 1, so that fragments such as oxide skin are further prevented from entering the lower portion of the transverse plate 4 to prevent the first piston rod 3 from working, meanwhile, the transverse plate 4 drives the first piston rod 3 to move to generate compressed gas, a part of the compressed gas is blown out from the gas blowing hole 18 through the gas blowing channel 19, the residual oxide skin fragments on the transverse plate 4 are blown away, and the fragments and impurities are further prevented from preventing the first piston rod 3 from moving.

As an embodiment of the invention, the transverse plate 4 is fixedly connected with an elastic air bag 20, two thirds of the volume of air is filled in the elastic air bag 20, the elastic air bag 20 is used for wrapping and fixing the chain lock, so that the chain lock is prevented from shaking to rub the hook body 1, and the stability of a lifted workpiece is further improved; when the chain lock connected with the workpiece is hung on the hook body 1, the chain lock compresses the elastic air bag 20, the chain lock is wrapped after the elastic air bag 20 deforms, the chain lock is prevented from shaking on the hook body 1, the friction between the chain lock and the hook body 1 is reduced, the service life of the hook body 1 is prolonged, meanwhile, the workpiece connected with the chain lock is further reduced to shake, and the safety of the workpiece hoisting operation is further improved.

When the chain lock is in operation, a chain lock with a fixed workpiece is hung on the hook body 1, the chain lock presses down the transverse plate 4, the transverse plate 4 drives the first piston rod 3 to move to generate compressed gas at the bottom of the sliding hole 2, the compressed gas enters the arc-shaped groove 6 through a pipeline, the locking rod 7 is pushed to slide and extend out of the arc-shaped groove 6, the extended locking rod 7 is clamped at the A end of the hook body 1, the chain lock is locked, and the phenomenon that the workpiece is unhooked in the process of lifting and transporting the workpiece, so that the workpiece is damaged and casualty accidents are avoided; after the workpiece is hoisted in place, the hook body 1 is put down through the electric hoist, the pressure of the chain lock on the transverse plate 4 is released at the moment, the locking rod 7 is reset under the action of the spring, the locking rod 7 is opened, the chain lock together with the workpiece is taken down from the hook body 1, and the workpiece hoisting work is completed; when the workpiece is lifted through the hook body 1, compressed gas is generated in the sliding hole 2, a part of the compressed gas is stored in the gas storage chamber 13 through the one-way valve, when the workpiece is lifted to a preset position, the locking rod 7 is opened, at the moment, because the weight of the locking rod 7 and the workpiece is large, time and labor are wasted when a worker manually takes off the chain lifting appliance, the worker can pull the gas valve 14 and then introduce the compressed gas in the gas storage chamber 13 into the cylinder 9 through a pipeline to push the second piston rod 10 to extend out, the second piston rod 10 tensions the steel wire rope 12 through the second pulley 11, and after the steel wire rope 12 located at the section B of the hook body 1 is straightened, the chain lock is unhooked from the hook body 1, so that the labor intensity of the worker is further reduced; compressed gas generated in the sliding hole 2 enters the central hole 16 through a pipeline and is spirally sprayed out through the vent hole 15, so that scrap impurities such as oxide skins and the like falling off from workpieces adhered to the steel wire rope 12 are blown off, the first pulley 8 and the second pulley 11 are prevented from being blocked by the scrap impurities, friction between the steel wire rope 12 and the first pulley 8 and the second pulley 11 is reduced, and the service life of the steel wire rope 12 is further prolonged; the steel wire rope 12 which pushes the chain lock to be unhooked can be reset through the reset spring 17, next lifting operation is facilitated, meanwhile, compressed gas is generated in a hollow structure of the reset spring 17 after stretching deformation in the reset spring 17, oxide scale fragments and impurities remained in the section B of the hook body 1 are blown away by the compressed gas, the cleanness of the hook body 1 and the steel wire rope 12 is further kept, and the piston rod 3 of the first piston rod of the fragment impurity clamping column is reduced; the two ends of the transverse plate 4 and the section B of the hook body 1 form sliding seals, so that fragments such as oxide scales are further prevented from entering the lower portion of the transverse plate 4 to prevent the first piston rod 3 from working, meanwhile, the transverse plate 4 drives the first piston rod 3 to move to generate compressed gas, a part of the compressed gas is blown out of the gas blowing hole 18 through the gas blowing channel 19 to blow away the oxide scale fragments remained on the transverse plate 4, and further, the fragments and impurities are prevented from preventing the first piston rod 3 from moving; when the chain lock connected with the workpiece is hung on the hook body 1, the chain lock compresses the elastic air bag 20, the chain lock is wrapped after the elastic air bag 20 deforms, the chain lock is prevented from shaking on the hook body 1, the friction between the chain lock and the hook body 1 is reduced, the service life of the hook body 1 is prolonged, meanwhile, the workpiece connected with the chain lock is further reduced to shake, and the safety of the workpiece hoisting operation is further improved.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A lifting hook rigging is characterized in that: the hook comprises a hook body (1), a sliding hole (2) is formed in the section B of the hook body (1), and a first piston rod (3) is connected in the sliding hole (2) in a sliding manner; one end of the first piston rod (3) positioned outside the sliding hole (2) is fixedly connected with a transverse plate (4); the top of the hook body (1) is provided with a threaded connecting rod (5); an arc-shaped groove (6) is formed in the hook body (1) close to one side of the threaded connecting rod (5); a locking rod (7) is connected in the arc-shaped groove (6) in a sliding manner, and a spring is fixedly connected between the locking rod (7) and the bottom of the arc-shaped groove (6); the bottom of the sliding hole (2) is communicated with the arc-shaped groove (6) through a pipeline; through mutual matching among the transverse plate (4), the first piston rod (3), the sliding hole (2), the arc-shaped groove (6) and the locking rod (7), when the chain lock is hung on the hook body (1), the locking rod (7) is popped out, so that the chain lock is prevented from unhooking, and the workpiece is prevented from being damaged.

2. A lifting hook rigging according to claim 1, wherein: a first pulley (8) is arranged on the part of the hook body (1) close to the threaded connecting rod (5); a groove is formed in the hook body (1) and the position corresponding to the first pulley (8), and a cylinder (9) is fixedly connected in the groove; a second piston rod (10) is connected in the cylinder (9) in a sliding manner, and one end, located on the outer side of the cylinder (9), of the second piston rod (10) is far away from the first pulley (8); one end of the second piston rod (10) positioned at the outer side of the cylinder (9) is rotatably connected with a second pulley (11); a steel wire rope (12) is arranged in the hook body (1), and the steel wire rope (12) is arranged along the section B of the hook body (1) in a fitting manner; one end of the steel wire rope (12) is fixedly connected with the end A of the hook body (1), and the other end of the steel wire rope is fixedly connected with the groove by bypassing the first pulley (8) and the second pulley (11); an air storage chamber (13) is arranged on one side of the sliding hole (2), and the air storage chamber (13) is communicated with the bottom of the sliding hole (2) through a one-way valve; the air cylinder (9) is communicated with the air storage chamber (13) through an air valve (14) and a pipeline; through the mutual cooperation of the first pulley (8), the second pulley (11), the air cylinder (9), the steel wire rope (12), the air valve (14) and the air storage chamber (13), the steel wire rope (12) is tensioned after the hoisting is finished, so that the chain lock is smoothly put down.

3. A lifting hook rigging as claimed in claim 2, wherein: a group of arc-shaped vent holes (15) are uniformly distributed on the inner circumference of the first pulley (8), and the vent holes (15) are communicated with a central hole (16) in the center of the first pulley (8); the central hole (16) is communicated with the bottom of the sliding hole (2) through a pipeline; the vent hole (15) is used for blowing away oxide skin impurities adhered to the steel wire rope (12) to prevent the first pulley (8) and the second pulley (11) from being blocked.

4. A lifting hook rigging as claimed in claim 2, wherein: a group of reset springs (17) are fixedly connected between the steel wire rope (12) and the section B of the hook body (1), and the reset springs (17) are used for restoring the original position after the steel wire rope (12) pushes the chain lock to be unhooked; reset spring (17) are hollow structure, and reset spring (17) pressurized blows away the impurity on the work piece, prevents to block wire rope (12).

5. A lifting hook rigging according to claim 1, wherein: the transverse plate (4) is made of elastic materials, and the transverse plate (4) with two ends connected with the section B of the hook body (1) in a sliding manner can prevent oxide skin scraps of a lifted workpiece from entering the lower part of the transverse rod and hindering the normal sliding of the first piston rod (3); still be equipped with a set of gas hole (18) in diaphragm (4), gas hole (18) are through blowing air flue (19) and slide opening (2) bottom intercommunication in piston rod (3), and gas hole (18) cooperation is blown air flue (19) and can be blown away the dust and the cinder of adhesion on work piece or the chain tool to lock, further keeps diaphragm (4) below piston rod (3) clean.

6. A lifting hook rigging according to claim 1, wherein: the transverse plate (4) is fixedly connected with an elastic air bag (20), the elastic air bag (20) is filled with two thirds of air, the elastic air bag (20) is used for wrapping and fixing the chain lock, the chain lock is prevented from shaking the friction hook body (1), and the stability of a lifted workpiece is further improved.