CN219009715U

CN219009715U - Automatic unhooking device of crane

Info

Publication number: CN219009715U
Application number: CN202223508451.5U
Authority: CN
Inventors: 田维祥; 梅琳
Original assignee: CHONGQING SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTE
Current assignee: CHONGQING SPECIAL EQUIPMENT INSPECTION AND RESEARCH INSTITUTE
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-12
Anticipated expiration: 2032-12-28

Abstract

An automatic unhooking device of a crane, which comprises a hook body and further comprises: the fixed frame is rotationally connected with the hook body; the baffle is rotatably connected to the fixed frame, and one end of the baffle is coupled with one end of the hook body; and a power unit for driving the hook body and the baffle to rotate. The motor fixedly connected that is equipped with in this device has the worm, and the worm coupling has first gear and second gear, and first gear fixedly connected has the coupler body, and the second gear fixedly connected has the baffle, and the baffle can seal the opening of coupler body, and the motor passes through worm, first gear and second gear drive the equidirectional rotation of coupler body to the baffle can be with the equidirectional upset and seal the opening of coupler body when the coupler body catches the object and overturn downwards behind the coupler body hook, has improved factor of safety.

Description

Automatic unhooking device of crane

Technical Field

The utility model relates to the technical field of hoisting equipment, in particular to an automatic unhooking device of a crane.

Background

The lifting hook device is the most widely applied object taking device on a crane, and when the lifting hook device is used, the lifting hook is usually sleeved in a lifting hole or a cable of a lifted heavy object by means of manpower, so that the purpose of lifting the heavy object is realized, and the method has poor safety performance. With the development of society, certain using units require that the crane hook can realize an automatic unhooking function so as to achieve the purposes of enabling the hook to automatically hook a heavy object and moving the heavy object to a designated place. The patent publication No. CN211198365U discloses an automatic unhooking device of a crane, the automatic unhooking device comprises a mounting seat and a lifting hook, a hook handle is arranged on the lifting hook, the hook handle is hinged with the mounting seat through a first pin shaft, the mounting seat is rotationally connected with a second pin shaft which penetrates through the hook handle, a first gear is fixedly arranged on the second pin shaft, teeth are arranged on the hook handle, the first gear is meshed with the teeth on the hook handle, a second gear is arranged at the rear end of the second pin shaft, a mounting plate is welded on the side face of the mounting seat, a motor is arranged on the mounting plate, a third gear is arranged on an output shaft of the motor, the third gear is meshed with the second gear, a U-shaped connecting frame is welded on the upper side of the mounting seat, a round hole is formed in the middle of the connecting frame, the motor in the patent drives the second pin shaft to rotate through the second gear and the hook handle which are meshed with each other, so that automatic unhooking is realized, but the rotation of the lifting hook usually takes place in equipment in a pre-formed mode, after the lifting mechanical crane lifts, a heavy object is rotated, a pulley block and a wire is wound around the lifting hook, and a wire is not wound around the lifting hook is placed in the lifting device, and the lifting hook is not placed in the safety device together when the lifting device is in a running process.

Disclosure of Invention

The utility model aims to overcome the defects of the conditions, and aims to provide an automatic unhooking device of a crane, which can close the opening of a hook body, prevent a hung object from unhooking and improve the safety factor.

An automatic unhooking device of a crane, which comprises a hook body and further comprises: the fixed frame is rotationally connected with the hook body; the baffle is rotatably connected to the fixed frame, and one end of the baffle is coupled with one end of the hook body; and a power unit for driving the hook body and the baffle to rotate.

Further, the fixed frame is set to be a rectangular section annular frame, a first through groove is formed in the bottom surface of the bottom edge of the fixed frame, a second through groove is formed in the bottom of the side face of one side edge of the fixed frame, and the first through groove and the second through groove are communicated.

30, a first through hole and a second through hole are formed at the bottom of the front surface of the fixed frame, and the first through hole and the second through hole

The holes all penetrate through the first through groove.

Further, the first through hole is rotationally connected with a first rotating shaft, and the second through hole is rotationally connected with a second rotating shaft.

Further, the power unit includes a motor, a first gear, and a second gear.

Further, the motor is fixedly connected to the center of the fixed frame, a worm is fixedly connected to the motor, and the motor is electrically connected with a switch 35.

Further, the first gear is fixedly connected to the first rotating shaft, and the first gear and the first rotating shaft are coaxial.

Further, the second gear is fixedly connected to the second rotating shaft, and the second gear and the second rotating shaft are coaxial.

Further, the worm is disposed between the first gear and the second gear, and the worm is coupled with the first gear and the second gear.

40, a cable is fixedly connected to the top of the fixed frame.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the motor fixedly connected with worm is coupled with first gear and second gear, the first gear fixedly connected with hook body, the second gear fixedly connected with baffle plate, the baffle plate can seal the opening of hook body, the motor can pass through worm, first gear and second gear

The two gears drive the hook body to rotate in the same direction, so that the baffle can turn 45 in the same direction and close the opening of the hook body when the hook body turns downwards after holding an object, and the safety factor is improved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification

The examples of (a) together serve to explain the utility model and do not limit it. In the drawings:

fig. 1 is a schematic view of the overall structure of an automatic unhooking device of a crane.

Fig. 2 is a cut-away view of the crane automatic unhooking device.

Fig. 3 is a schematic view of the unhooking state of the automatic unhooking device of the crane.

In the figure: 1. a hook body; 2. a fixed frame; 21. a first through groove; 22. a second through slot; 23. a first rotating shaft; 24. a second rotating shaft; 3. a baffle; 4. a power unit; 41. a motor; 411. a worm; 42. a first gear; 43. a second gear; 5. a cable.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Specific examples:

as shown in fig. 1 and 2, an automatic unhooking device of a crane includes a hook body 1, and further includes: a fixed frame 2 rotatably connected to the hook body 1; the baffle plate 3 is rotatably connected to the fixed frame 2, and one end of the baffle plate 3 is coupled with one end of the hook body 1; and a power unit 4 for driving the hook body 1 and the baffle 3 to rotate.

The fixed frame 2 is an annular frame body which is made of metal and is rectangular in cross section, the fixed frame 2 is provided with a certain width, a cable 5 is fixedly connected to the top of the fixed frame 2, a first through groove 21 is formed in the bottom edge of the fixed frame 2, a second through groove 22 is formed in the bottom of the outer side face of one side edge of the fixed frame 2, the first through groove 21 is communicated with the second through groove 22, a first through hole and a second through hole are formed in the front face of the fixed frame 2, the first through hole and the second through hole penetrate through the second through groove 22, a first rotating shaft 23 is connected in the first through hole in a rotating mode, and a second rotating shaft 24 is connected in the second through hole in a rotating mode.

The power unit 4 includes a motor 41, a first gear 42 and a second gear 43, the motor 41 is fixedly connected to the center of the fixed frame 2, the motor 41 is fixedly connected with a worm 411, the motor 41 is electrically connected with a switch, the switch is a forward-reverse switch, the first gear 42 is fixedly connected to the first rotating shaft 23, the first gear 42 and the first rotating shaft 23 are coaxial, the second gear 43 is fixedly connected to the second rotating shaft 24, the second gear 43 and the second rotating shaft 24 are coaxial, the first gear 42 and the second gear 43 are both arranged in the first through groove 21 and rotate relative to the fixed frame 2, the number of teeth of the first gear 42 is greater than the number of teeth of the second gear 43, the worm 411 is arranged between the first gear 42 and the second gear 43, the worm 411 is coupled with the first gear 42 and the second gear 43, and the motor 41 drives the first gear 42 and the second gear 43 to rotate through the worm 411.

As shown in fig. 3, the top of the hook body 1 penetrates into the first through groove 21 and is fixedly connected to the first gear 42, the top end of the baffle 3 penetrates into the first through groove 21 and is fixedly connected to the second gear 43, when the hook body 1 is in a vertical state, the bottom end of the baffle 3 is attached to the bottom end of the hook body 1, the baffle 3 is used for closing an opening of the hook body 1, a worm 411 is fixedly connected to a motor 41 arranged in the device, the worm 411 is coupled with the first gear 42 and the second gear 43, the first gear 42 is fixedly connected with the hook body 1, the baffle 3 is fixedly connected to the second gear 43, the baffle 3 can close the opening of the hook body 1, the motor 41 drives the hook body 1 to rotate in the same direction through the worm 411, the first gear 42 and the second gear 43, so that the baffle 3 can turn over in the same direction and close the opening of the hook body 1 when the hook body 1 is turned down after holding an object, the hook body is effectively prevented from unhooking, and the safety factor is improved.

When the device is used, the motor 41 is controlled to be reversed through the opening, the first gear 42 and the second gear 43 are driven to rotate through the worm 411, the rotating first gear 42 drives the hook body 1 to rotate, meanwhile, the rotating second gear 43 drives the baffle 3 to rotate towards the same direction of the rotation of the hook body 1, at the moment, the hook body 1 has a certain inclination angle relative to the fixed frame 2, the bottom end part of the baffle 3 is separated from the bottom end part of the hook body 1, the baffle 3 does not close the opening of the hook body 1, at the moment, the crane controls the hook body 1 to be hooked on a lifting lug to be lifted through the cable 5, the motor 41 is controlled to rotate positively, the first gear 42 is driven by the worm 411 to rotate through the second gear 43, the hook body 1 and the baffle 3 are enabled to rotate simultaneously until the bottom end part of the baffle 3 is attached to the bottom end part of the hook body 1, at the moment, the hook body 1 hooks a lifted object and the baffle 3 can be prevented from unhooking, and when the crane lifts the object to a designated position, the motor 41 is reversed again through the worm 411 to drive the first gear 42 and the second gear 43, the hook body 1 can be inclined and the baffle 3 can open the opening of the hook body 1 automatically, and the hook body 1 is more beneficial to be separated from the hook body 1.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The automatic unhooking device of the crane comprises a hook body (1), and is characterized by further comprising:

a fixed frame (2) rotatably connected to the hook body (1);

the baffle plate (3) is rotatably connected to the fixed frame (2), and one end of the baffle plate (3) is coupled with one end of the hook body (1); and

and a power unit (4) for driving the hook body (1) and the baffle plate (3) to rotate.

2. The crane automatic unhooking device according to claim 1, wherein: the fixing frame (2) is a rectangular section annular frame, a first through groove (21) is formed in the bottom surface of the bottom edge of the fixing frame (2), a second through groove (22) is formed in the bottom of the side face of one side edge of the fixing frame (2), and the first through groove (21) is communicated with the second through groove (22).

3. The crane automatic unhooking device according to claim 2, wherein: the front bottom of the fixed frame (2) is provided with a first through hole and a second through hole, and the first through hole and the second through hole penetrate through the first through groove (21).

4. A crane autounhooking device according to claim 3, characterized in that: the first through hole is rotatably connected with a first rotating shaft (23), and the second through hole is rotatably connected with a second rotating shaft (24).

5. The crane automatic unhooking device according to claim 4, wherein: the power unit (4) comprises a motor (41), a first gear (42) and a second gear (43).

6. The crane automatic unhooking device according to claim 5, wherein: the motor (41) is fixedly connected to the center of the fixed frame (2), a worm (411) is fixedly connected to the motor (41), and the motor (41) is electrically connected with a switch.

7. The crane automatic unhooking device according to claim 6, wherein: the first gear (42) is fixedly connected to the first rotating shaft (23), and the first gear (42) is coaxial with the first rotating shaft (23).

8. The crane automatic unhooking device according to claim 7, wherein: the second gear (43) is fixedly connected to the second rotating shaft (24), and the second gear (43) is coaxial with the second rotating shaft (24).

9. The crane automatic unhooking device according to claim 8, wherein: the worm (411) is arranged between the first gear (42) and the second gear (43), and the worm (411) is coupled with the first gear (42) and the second gear (43).

10. The crane automatic unhooking device according to claim 9, wherein: the top of the fixed frame (2) is fixedly connected with a cable (5).