CN212269207U

CN212269207U - Anti-drop lifting hook for crane

Info

Publication number: CN212269207U
Application number: CN201922480440.2U
Authority: CN
Inventors: 刘慰庭
Original assignee: Nantong Tengge Construction Machinery Equipment Co ltd
Current assignee: Nantong Tengge Construction Machinery Equipment Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-01-01
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an anticreep lifting hook for hoist, including the lifting hook body, its characterized in that: the hook opening of the hook body is fixedly provided with an anti-unhooking device, the anti-unhooking device comprises a telescopic rod device and a knob switch, and the knob switch can rotate clockwise to control the telescopic rod device to abut against the hook body so as to close the hook opening; the knob switch can rotate anticlockwise to control the telescopic rod device to open the hook opening. The utility model has the advantages that the anti-unhooking device with the telescopic structure is arranged, the inner telescopic rod can be extended out by rotating the switch to be clamped with the inner wall of the lifting hook body, so that an airtight space is formed, the inner telescopic rod can be withdrawn by rotating the switch, and the problem of detaching the anti-unhooking hook is easily solved; meanwhile, the wear-resistant coating is arranged, so that the safety of the lifting hook is improved, the lifting hook is not easy to wear, the service life of the lifting hook is guaranteed, and the lifting hook is simple in structure and convenient to use.

Description

Anti-drop lifting hook for crane

Technical Field

The utility model relates to a jack-up lifting hook technical field, concretely relates to anticreep lifting hook for hoist.

Background

The crane is a multi-action crane that vertically lifts and horizontally carries heavy objects within a certain range. The lifting hook which is necessary for the crane is the most common lifting appliance in the lifting machinery. The hook is often suspended on a steel wire rope of a hoisting mechanism by means of a pulley block and the like; the lifting hook is widely applied to important industries such as ports, electric power, steel, shipbuilding, petrochemical industry, mines, railways, buildings, metallurgical chemical industry, automobile manufacturing, plastic machinery, industrial control, highways, large-piece transportation, pipeline assistance, slope tunnels, well treatment protection, marine rescue, ocean engineering, airport construction, bridges, aviation, aerospace, venues and the like, and mechanical equipment of foundation construction engineering.

In view of safety, the opening of the hook of the crane is generally provided with an anti-disengaging structure device, and most of the existing anti-disengaging devices are structures of grid pieces such as lock plates, blocking pieces and the like which are hinged on the hook and are matched with return springs, so that although the device is convenient to use, the device has a great problem: and (4) the problem of detachment. When the device unloads hanging objects such as hanging ropes, steel cables and the like, the check piece needs to be pressed for a long time, so that the unloading of the hanging objects is easily blocked; in addition, in practical use, the device is easy to deflect due to collision, so that the gear is not tight, the safety performance is reduced, and the safety is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a crane is with anticreep lifting hook solves one or more among the above-mentioned prior art problem.

According to one aspect of the utility model, the anti-drop lifting hook for the crane is provided, which comprises a lifting hook body, wherein an anti-drop device is fixedly arranged at the hook opening of the lifting hook body, the anti-drop device comprises a telescopic rod device and a knob switch, and the knob switch can rotate clockwise to control the telescopic rod device to abut against the lifting hook body so as to close the hook opening; the knob switch can rotate anticlockwise to control the telescopic rod device to open the hook opening.

In some embodiments: the telescopic rod device comprises an external telescopic body and an internal telescopic rod, and the internal telescopic rod is completely positioned inside the external telescopic body.

In some embodiments: the middle of the inner telescopic rod is a rectangular cavity, and a thread surface is arranged on the left side of the rectangular cavity.

In some embodiments: the knob switch comprises an external cap and an internal screw rod, threads are arranged inside the cap, and the cap is in threaded connection with the upper end of the screw rod. From this, through setting up the block, increase the inside atress area of knob switch, reduce the switch resistance, facilitate the use.

In some embodiments: the lower end of the screw rod extends into the inner telescopic rod and is in threaded connection with the thread surface. From this, accessible knob switch screw rod rotates, and then control telescopic link is flexible.

In some embodiments: the lifting hook body is provided with a contact block, and when the knob switch rotates clockwise to control the telescopic rod device to abut against the lifting hook body to close the hook opening, the contact block can abut against the telescopic rod device. Therefore, the contact block is arranged on the lifting hook body, so that the telescopic rod device can be prevented from loosening and falling off due to long-term use.

In some embodiments: and a wear-resistant coating is arranged at the position where the contact block is abutted to the telescopic rod device. Therefore, abrasion caused by long-term use of the hook device is avoided.

The utility model discloses beneficial effect:

the utility model relates to an anti-drop lifting hook for crane, which is provided with an anti-drop hook device with a telescopic structure, a rotary switch can extend out an inner telescopic rod to be clamped with the inner wall of a lifting hook body, thereby forming a closed space, fixing hanging objects such as hanging ropes, steel cables and the like, and preventing the hanging objects such as hanging ropes, steel cables and the like from shaking in the transportation process to drop off from the lifting hook; when hanging objects such as hanging ropes, steel cables and the like are detached, only the rotary switch is required to be rotated to withdraw the inner telescopic rod, so that the detachment problem of the anti-detachment hook is solved; in addition, the inner wall of the lifting hook body is also provided with a contact block and a wear-resistant coating, so that the safety of the lifting hook is improved, the lifting hook is not easy to wear, the service life of the lifting hook is guaranteed, and the lifting hook is simple in structure and convenient to use.

Drawings

Fig. 1 is a schematic structural view of an anti-drop hook for a crane according to the present invention;

FIG. 2 is a front view of the anti-unhooking device;

fig. 3 is a schematic structural view of the unhooking prevention device.

Reference numerals and descriptions:

1. a hook body; 2. an unhooking prevention device; 3. a telescopic rod device; 31. an external telescopic body; 32. an inner telescoping rod; 321. a rectangular cavity; 3211. a thread face; 4. a knob switch; 41. capping; 42. an internal screw; 5. a contact block; 6. and (3) wear-resistant coating.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, an anti-drop hook for a crane comprises a hook body 1, wherein an anti-drop device 2 is fixedly arranged at a hook opening of the hook body 1, and the anti-drop device 2 does not exceed the inner wall of the hook opening; the unhooking prevention device 2 comprises a telescopic rod device 3 and a knob switch 4, and the knob switch 4 can rotate clockwise to control the telescopic rod device 3 to abut against the hook body 1 so as to close a hook opening; the knob switch 4 can rotate counterclockwise to control the telescopic rod device 3 to open the hook opening.

In some embodiments, the hook body 1 is provided with the contact block 5, and when the knob switch 4 rotates clockwise to control the telescopic rod device 3 to abut against the hook body 1 so as to close the hook opening, the contact block 5 can abut against the telescopic rod device 3, so that the telescopic rod device can be prevented from loosening and falling off due to long-term use.

In some embodiments, the contact block 5 is provided with a wear-resistant coating 6 at the location where it abuts the telescopic rod device 3, thereby avoiding wear of the hook device over time.

As shown in fig. 2, the telescopic rod device 3 comprises an outer telescopic body 31 and an inner telescopic rod 32, wherein the inner telescopic rod 32 is completely inside the outer telescopic body 31. In some embodiments, the inner telescopic rod 32 has a rectangular cavity 321 in the middle, and a threaded surface 3211 is disposed on the left side of the rectangular cavity 321, so that the telescopic rod device 3 and the knob switch 4 can be screwed through the threaded surface 3211.

As shown in fig. 3, in some embodiments, the rotary switch 4 includes an external cap 41 and an internal screw rod 42, the cap 41 is internally provided with a thread, and the cap 41 is in threaded connection with the upper end of the screw rod 42, so that by providing the cap, the internal stress area of the rotary switch is increased, the switch resistance is reduced, and the use is facilitated.

The lower end of the screw rod 42 extends into the inner telescopic rod 32 and is in threaded connection with the thread surface 3211.

The utility model discloses the theory of operation:

when the anti-dropping lifting hook for the crane is used, the telescopic rod device 3 is in a closed state, namely, the inner telescopic rod 32 is in the outer telescopic body 31, when a hanging object is hung on the lifting hook body 1, the knob switch 4 is rotated, namely, the cover cap 41 is screwed to drive the inner screw rod 42 to enable the inner telescopic rod 32 to extend outwards by virtue of the thread surface 3211, and when the inner telescopic rod 32 reaches the end, the inner telescopic rod is clamped with the inner wall of the lifting hook body 1 and leans against the conflict block 5, so that a closed space is formed; when the hung object needs to be detached, the knob switch 4 is rotated in the same manner, that is, the cap 41 is screwed to drive the inner screw rod 42 to enable the inner telescopic rod 32 to contract inwards by means of the thread surface 3211, and when the inner telescopic rod 32 completely enters the outer telescopic body 31, the hung object can be taken down.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, similar modifications and improvements can be made without departing from the inventive concept of the present invention, and these are also considered to be within the protection of the present invention.

Claims

1. The utility model provides an anticreep lifting hook for hoist, includes lifting hook body (1), its characterized in that: an anti-unhooking device (2) is fixedly arranged at a hook opening of the lifting hook body (1), the anti-unhooking device (2) comprises a telescopic rod device (3) and a knob switch (4), and the knob switch (4) can rotate clockwise to control the telescopic rod device (3) to abut against the lifting hook body (1) so as to close the hook opening; the knob switch (4) can rotate anticlockwise to control the telescopic rod device (3) to open the hook opening.

2. The anti-drop lifting hook for the crane according to claim 1, characterized in that: the telescopic rod device (3) comprises an external telescopic body (31) and an internal telescopic rod (32), and the internal telescopic rod (32) is completely positioned inside the external telescopic body (31); the middle of the inner telescopic rod (32) is a rectangular cavity (321), and a thread surface (3211) is arranged on the left side of the rectangular cavity (321); the knob switch (4) comprises an external cover cap (41) and an internal screw rod (42), threads are arranged inside the cover cap (41), and the cover cap (41) is in threaded connection with the upper end of the screw rod (42).

3. The anti-drop lifting hook for the crane according to claim 2, characterized in that: the lower end of the screw rod (42) extends into the inner telescopic rod (32) and is in threaded connection with the thread surface (3211).

4. The anti-drop lifting hook for the crane according to claim 1, characterized in that: the lifting hook is characterized in that a contact block (5) is arranged on the lifting hook body (1), when the knob switch (4) rotates clockwise to control the telescopic rod device (3) and the lifting hook body (1) to abut against and close a hook opening, the contact block (5) can abut against the telescopic rod device (3).

5. The anti-drop lifting hook for the crane according to claim 4, wherein: and a wear-resistant coating (6) is arranged at the position where the contact block (5) and the telescopic rod device (3) are close to each other.