CN108689294B

CN108689294B - Lifting hook for construction crane

Info

Publication number: CN108689294B
Application number: CN201810706484.XA
Authority: CN
Inventors: 梁大伟
Original assignee: Hefei Chunhua Hoisting Machinery Co Ltd
Current assignee: Hefei Chunhua Hoisting Machinery Co Ltd
Priority date: 2018-07-02
Filing date: 2018-07-02
Publication date: 2020-10-16
Anticipated expiration: 2038-07-02
Also published as: CN108689294A

Abstract

The invention discloses a lifting hook for a construction crane, and relates to the technical field of crane accessories. The invention comprises a fixed rod, wherein the fixed rod is inserted above a hook body, the fixed rod is positioned below a connecting mechanism, the upper end of the hook body is arranged at the lower end of the connecting mechanism, the connecting mechanism comprises an installation block, a connecting block, a bearing and a rotary seat, a limiting mechanism is arranged at an opening of the hook body, the limiting mechanism comprises a connecting piece, a clockwork spring, a baffle plate, a stop block and a pin shaft, and a reinforcing bar is arranged below the hook body. The invention solves the problems that baffle parts are easy to rust when the lifting hook is used, the safety of the crane hook is poor when the lifting hook is used, and the lifting work is unstable by arranging the connecting piece, the clockwork spring, the baffle plate, the stop block, the pin shaft, the mounting block, the connecting block, the bearing, the rotating seat and the reinforcing steel bar.

Description

Lifting hook for construction crane

Technical Field

The invention relates to the technical field of crane accessories, in particular to a lifting hook for a construction crane.

Background

One type of the lifting hook is a shackle or a hook attached with a chain or a rope, the other type of the lifting hook is a large hook generally provided with a handle, in particular to the most common lifting appliance in hook hoisting machinery for carrying goods or hanging meat, the lifting hook is usually hung on a steel wire rope of a hoisting mechanism by means of a pulley block and other parts, and the lifting hook is divided into a single hook and a double hook according to the shape; 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 below 80 tons; the double hook of atress symmetry is adopted often greatly to the load lifting capacity, and lamination formula lifting hook is formed by the riveting of several steel sheets that the cutting takes shape, and whole lifting hook can not destroy when individual panel crackle appears, and the security is better, but the dead weight is great, is used in the hoist of big load lifting capacity or handling molten steel ladle mostly, and the lifting hook often receives the impact at the operation in-process, must adopt the good quality carbon steel of toughness to make, and the lifting hook is categorised extremely wide, generally includes: the shackle is applicable to factories, mines, petroleum, chemical engineering, ship wharfs and the like, ensures safety, and has a quality safety coefficient and a static load reaching 3 times, along with the development of the mechanical industry, the general lifting hook cannot meet the lifting of large objects, and the rated lifting capacity of the lifting hook reaches thousands of tons or even tens of thousands of tons under the environments of ports, wharfs, offshore operations and the like, so that the lifting hook is very important when being made of special materials, and the forging lifting hook is usually made of 20DG20Mn, 35CrMo, 34CrMo, 30 DG 2Ni2Mo and the like.

However, the prior art has the following defects:

1. when the lifting hook is used, the baffle plate parts are easy to rust;

2. when the crane hook is used, the safety is poor, and the hoisting work is unstable.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a lifting hook for a construction crane, which solves the problems that baffle parts are easy to rust when the lifting hook is used, the safety of the lifting hook is poor when the lifting hook is used, and the lifting work is unstable.

In order to achieve the purpose, the invention provides the following technical scheme:

a lifting hook for a construction crane comprises a fixed rod, wherein the fixed rod is inserted above a hook body, the fixed rod is positioned below a connecting mechanism, the upper end of the hook body is arranged at the lower end of the connecting mechanism, the connecting mechanism comprises an installation block, a connecting block, a bearing and a rotary seat, the connecting block is arranged at the lower end of the installation block, two sides of the bearing are arranged above the joint of the connecting block and the installation block and are connected in a clamping manner, the bearing is sleeved at the middle part of the rotary seat, the rotary seat is T-shaped, the lower parts of two sides of a bulge above the rotary seat are abutted against the upper ends of two sides of the bearing, a limiting mechanism is arranged at an opening of the hook body and comprises a connecting piece, a spring, a baffle, a stop block and a pin shaft, the spring is connected with the outer wall of the hook body through the connecting piece and is arranged at the center of, one end of the baffle is connected with the pin shaft, the baffle is installed at the joint of the outer side of the pin shaft and the baffle, the other end of the baffle is abutted against the upper left end of the hook body, and the reinforcing steel bar is installed below the hook body.

Preferably, the hook body is installed at the lower end of the rotary base.

Preferably, the pin shaft is internally provided with a cavity, lubricating oil is filled in the cavity, and oil outlets are formed in two sides of the cavity.

Preferably, the fixing rod is provided with two groups of through holes which are respectively arranged at the left end and the right end of the fixing rod, and auxiliary hanging ribs are arranged in the through holes.

Preferably, four groups of reinforcing steel bars are arranged on the inner side of the lower end of the hook body and are connected with the hook body in a welding mode.

The invention provides a lifting hook for a construction crane, which has the following beneficial effects:

(1) the invention is convenient to use, the oil outlet hole can slide on the inner wall of the clockwork spring when the pin shaft is driven to rotate, lubricating oil in the cavity can be thrown out to lubricate the pin shaft when the pin shaft rotates instantaneously, so that the baffle is not easy to be blocked, lubricating oil in the cavity is difficult for flowing, in the time of the pivoted, just can be scribbled on the inner wall of clockwork spring, can realize the gap oiling to can reach the purpose of practicing thrift, can not cause unnecessary waste, need not often go to cavity filling lubricating oil, in the building site dust, lifting hook exposes in the external world usually, through the lubricating oil that sets up, make the baffle can not rust to die on the coupler body, the easy rusty problem of baffle part when having solved lifting hook and using.

(2) The invention adopts the connecting mechanism which comprises the mounting block, the connecting block, the bearing and the rotating seat, the hook body is mounted at the lower end of the rotating seat, the rotating seat is manually broken, the bearing moves, the hook body is rotated to change the direction, a fixed rod is arranged above the hook body and is connected with the upper crane boom through an auxiliary lifting rib, the length of the auxiliary lifting rib is not only one, the hook body is changed according to the actual situation on site, the service time of the hook body is long, but the connecting mechanism needs to be replaced, the connecting mechanism is used for a period of time, because oxidation phenomenon takes place for dust or rainwater for coupling mechanism becomes fragile, hangs the muscle through supplementary, is connected the hook body with the big arm of hoist of top, prevents that coupling mechanism from taking place the accident and splitting, causes personnel's injury, has solved the not good problem of security when the hoist lifting hook uses.

(3) According to the invention, through the arranged reinforcing steel bars, the hoisting hook usually uses the ropes to hoist objects, the ropes are hung on the hook body, and the four groups of reinforcing steel bars increase the friction force between the ropes and the hook body, so that the ropes cannot move randomly, and the hoisting work is more stable.

Drawings

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

FIG. 2 is an exploded view of the coupling mechanism of the present invention;

FIG. 3 is a side cross-sectional view of the pin shaft of the present invention;

FIG. 4 is an enlarged view of the structure of FIG. 1A according to the present invention.

In the figure: 1. a connecting mechanism; 2. fixing the rod; 3. a through hole; 4. auxiliary hanging ribs; 5. a hook body; 6. reinforcing steel bars; 7. a limiting mechanism; 8. a connecting member; 9. a clockwork spring; 10. a baffle plate; 11. a stopper; 12. a pin shaft; 13. a cavity; 14. an oil outlet hole; 15. mounting blocks; 16. connecting blocks; 17. a bearing; 18. a rotating base; 19. and (3) lubricating oil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the present invention provides a technical solution: a lifting hook for a construction crane comprises a fixed rod 2, through holes 3 are formed in the fixed rod 2, two groups of through holes 3 are formed in the through holes and are respectively formed in the left end and the right end of the fixed rod 2, auxiliary lifting ribs 4 are arranged in the through holes 3, the length of the auxiliary lifting ribs 4 is not only one, the length of each hook body 5 is changed according to the actual situation on site, the service time of each hook body 5 is long, but a connecting mechanism 1 needs to be replaced, the connecting mechanism 1 is used for a period of time, the connecting mechanism 1 becomes fragile due to oxidation of dust or rainwater, the hook bodies 5 are connected with a crane boom above through the auxiliary lifting ribs 4, the connecting mechanism 1 is prevented from being broken due to accidents, objects hung on the lifting hook fall down to cause injury of personnel, the fixed rod 2 penetrates above the hook bodies 5, the hook bodies 5 are installed at the lower end of a rotary base 18, and the hook bodies 5 are installed below the rotary, make things convenient for the hook 5 rotatory change convenient, artificial rotating seat 18 of breaking off with the fingers and thumb, bearing 17 moves, make the hook 5 rotatory, change direction, dead lever 2 is installed to the top of hook 5, dead lever 2 is connected with the hoist of top is big arm through supplementary muscle 4 that hangs, dead lever 2 is located the below of coupling mechanism 1, the lower extreme at coupling mechanism 1 is installed to the upper end of hook 5, coupling mechanism 1 includes installation piece 15, connecting block 16, bearing 17 and rotating seat 18, connecting block 16 installs the lower extreme at installation piece 15, the both sides of bearing 17 set up in the handing-over department top of connecting block 16 with installation piece 15, be connected through the mode of joint, bearing 17 cup joints the middle part at rotating seat 18, rotating seat 18 is T type, the both sides below of the bellied department in rotating seat 18 top is inconsistent with the both sides upper end of bearing 17, stop gear 7 is installed to the opening part of hook 5, stop gear 7 includes connecting piece 8, The rope spring 9, the baffle 10, the stopper 11 and the pin shaft 12, the pin shaft 12 is provided with a cavity 13 inside, the cavity 13 is filled with lubricating oil 19, oil outlets 14 are formed in two sides of the cavity 13, the cavity 13 is formed inside the pin shaft 12, when the hook body 5 is used, a rope needs to be hooked on the hook body 5, the baffle 10 is forced to rotate downwards around the spring 9, after the rope is hooked on the hook body 5, the spring 9 rebounds to drive the baffle 10 to return to the original position, so that the lower end of the baffle 10 is abutted to the upper left end of the hook body 5, the stopper 11 is arranged to limit the baffle 10 from rotating outwards, the rope spring is convenient to use, when the pin shaft 12 is driven to rotate, the oil outlets 14 can also slide on the inner wall of the spring 9, when the pin shaft 12 is rotated instantaneously, the lubricating oil 19 in the cavity 13 can be thrown away to lubricate the pin shaft 12, so that the baffle 10 is not easy to be, the oil outlet 14 is abutted against the inner wall of the spring 9, when the spring 9 does not rotate, the lubricating oil 19 in the cavity 13 is not easy to flow out, when the spring 9 rotates, the lubricating oil is coated on the inner wall of the spring 9, gap oil injection can be realized, the purpose of saving can be achieved, no redundant waste is caused, the lubricating oil 19 is not required to be frequently filled into the cavity 13, a lifting hook is usually exposed to the outside in dust of a construction site, the baffle 10 is prevented from being rusted on the hook body 5 through the arranged lubricating oil 19, the spring 9 is connected with the outer wall of the hook body 5 through the connecting piece 8, the spring 9 is arranged at the center of the pin shaft 12, one end of the baffle 10 is connected with the pin shaft 12, the baffle 11 is arranged at the joint part of the outer side of the pin shaft 12, the other end of the baffle 10 is abutted against the upper left end of the hook body 5, the reinforcing steel bars 6 are arranged below the hook, the lifting hook is arranged on the inner side of the lower end of the hook body 5 respectively and connected with the hook body 5 in a welding mode, the object is lifted by the lifting hook usually through a rope, the rope is hung on the hook body 5, and the four groups of reinforcing steel bars 6 are arranged to increase the friction force between the rope and the hook body 5, so that the rope cannot move randomly, and the lifting work is more stable.

When the rope is used, the rope needs to be hooked on the hook body 5, the baffle plate 10 is forced to rotate downwards around the clockwork spring 9, after the rope is hooked on the hook body 5, the clockwork spring 9 rebounds to drive the baffle plate 10 to return to the position, the lower end of the baffle plate 10 is abutted to the upper left end of the hook body 5, the arranged stop block 11 is used for limiting the baffle plate 10 not to rotate outwards, the rope is convenient to use, when the pin shaft 12 is driven to rotate, the oil outlet 14 can also slide on the inner wall of the clockwork spring 9, when the pin shaft rotates instantly, the lubricating oil 19 in the cavity 13 can be thrown out to lubricate the pin shaft 12, so that the baffle plate 10 is not easy to be stuck, when the oil outlet 14 is abutted to the inner wall of the clockwork spring 9, when the lubricating oil is not rotated, the lubricating oil 19 in the cavity 13 is not easy to flow out, when the lubricating oil rotates, the lubricating oil is coated on the, therefore, the purpose of saving can be achieved, no redundant waste is caused, the cavity 13 is not required to be filled with lubricating oil 19 frequently, a lifting hook is exposed to the outside in building site dust, the baffle 10 is prevented from being rusted on the hook body 5 through the arranged lubricating oil 19, the hook body 5 is arranged at the lower end of the rotary seat 18, the rotary seat 18 is manually pulled off, the bearing 17 moves to rotate the hook body 5 and change the direction, the fixed rod 2 is arranged above the hook body 5, the fixed rod 2 is connected with the crane boom above through the auxiliary lifting rib 4, the fixed rod 2 is inserted above the hook body 5, two groups of through holes 3 are formed in two sides of the fixed rod 2, the auxiliary lifting ribs 4 are arranged in the through holes 3, the length of the auxiliary lifting ribs 4 is not only one, the change is carried out according to actual conditions on site, the service time of the hook body 5 is long, but the connecting mechanism 1 needs to be replaced, coupling mechanism 1 uses a period, because oxidation phenomenon takes place for dust or rainwater, make coupling mechanism 1 become fragile, hang muscle 4 through the assistance, be connected coupler body 5 with the big arm of hoist of top, prevent coupling mechanism 1 accident and fracture, make the object of hanging on the lifting hook fall, cause personnel's injury, lifting hook uses the rope to hoist the object usually, the rope is hung on coupler body 5, the four sets of reinforcing bar 6 increase ropes of setting and the frictional force of coupler body 5, make the rope can not remove at will, it is more stable to hoist work.

In conclusion, the connecting piece 8, the clockwork spring 9, the baffle plate 10, the stop block 11, the pin shaft 12, the mounting block 15, the connecting block 16, the bearing 17, the rotary seat 18 and the reinforcing steel bar 6 are arranged, so that the problems that parts of the baffle plate 10 are easy to rust when the lifting hook is used, the safety of the lifting hook is poor when the lifting hook is used, and the lifting work is unstable are solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a jack-up lifting hook for building hoist, includes dead lever (2), coupler body (5), coupling mechanism (1) is including installation piece (15), connecting block (16), bearing (17) and roating seat (18), the lower extreme at installation piece (15) is installed to connecting block (16), the both sides of bearing (17) set up in the junction top of connecting block (16) and installation piece (15), are connected through the mode of joint, bearing (17) cup joint the middle part at roating seat (18), roating seat (18) are the T type, both sides below the protruding department in roating seat (18) top are with the both sides upper end looks butt of bearing (17);

a limiting mechanism (7) is installed at an opening of the hook body (5), the limiting mechanism (7) comprises a connecting piece (8), a spring (9), a baffle (10), a stop block (11) and a pin shaft (12), and the spring (9) is connected with the outer wall of the hook body (5) through the connecting piece (8);

the clockwork spring (9) is arranged at the center of the pin shaft (12), one end of the baffle (10) is connected with the pin shaft (12), the baffle (10) is arranged at the joint of the outer side of the pin shaft (12) and the baffle (11), and the other end of the baffle (10) is abutted against the upper left end of the hook body (5); the baffle plate is arranged on the outer side of the shell;

the hook body (5) is arranged at the lower end of the rotating seat (18);

the method is characterized in that:

the fixing rod (2) is inserted above the hook body (5), the fixing rod (2) is positioned below the connecting mechanism (1), and the upper end of the hook body (5) is installed at the lower end of the connecting mechanism (1);

a reinforcing steel bar (6) is arranged below the hook body (5);

the fixing rod (2) is provided with through holes (3), two groups of the through holes (3) are arranged and respectively arranged at the left end and the right end of the fixing rod (2), and auxiliary hanging ribs (4) are arranged in the through holes (3); the hook body is connected with the crane boom above the hook body through the auxiliary lifting rib, and the connection mechanism is prevented from breaking due to accidents, so that objects hung on the lifting hook fall off to cause personal injury.

2. A lifting hook for a construction crane as claimed in claim 1, wherein: a cavity (13) is formed in the pin shaft (12), lubricating oil (19) is filled in the cavity (13), and oil outlet holes (14) are formed in two sides of the cavity (13).

3. A lifting hook for a construction crane as claimed in claim 1, wherein: four groups of reinforcing steel bars (6) are arranged on the inner side of the lower end of the hook body (5) respectively and are connected with the hook body (5) in a welding mode.