CN218909607U

CN218909607U - Lifting hook locking device and lifting hook

Info

Publication number: CN218909607U
Application number: CN202223272328.8U
Authority: CN
Inventors: 张垚; 袁小龙; 李攀; 刘太来; 杨子清
Original assignee: Shaanxi Construction Machinery Co ltd
Current assignee: Shaanxi Construction Machinery Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-04-25
Anticipated expiration: 2032-12-07

Abstract

The utility model belongs to the field of safety accessories of hoisting equipment, and discloses a lifting hook locking device and a lifting hook, wherein the locking device comprises a hoop assembly, a locking rod and a handle; the hoop assembly is provided with a self-locking ring, both sides of the hoop assembly are provided with U-shaped locking rods, the opening direction of each locking rod is connected with the handle, and the handle is provided with a cross beam which can be clamped on the self-locking ring. The utility model has the advantages that: the variety of the effective volume and the weight of the cargoes of the inner rope of the lifting hook is increased; the spring force of the spring is not needed to be overcome, so that the labor is saved, and the cargo is more convenient to assemble and disassemble; meanwhile, the handle is locked in a mechanical mode, so that the working reliability of the lifting hook locking device is improved, and the service life of the lifting hook locking device is prolonged; simple structure, convenient assembly, safety, reliability, simple opening and closing operation and labor saving.

Description

Lifting hook locking device and lifting hook

Technical Field

The utility model belongs to the field of safety accessories of hoisting equipment, and particularly relates to a lifting hook locking device and a lifting hook.

Background

The lifting hook is the most common lifting appliance in lifting equipment, and in order to prevent a rigging from falling out of the lifting hook, a lifting weight falls from a high place to cause serious safety accidents, and a locking device is required to be arranged on the lifting hook. The traditional hook locking device consists of a safety card, a connecting pin shaft and a torsion spring. The specific principle is that the safety card and the torsion spring in the safety card are connected to the lug of the hook handle by the connecting pin shaft, and the elasticity of the double torsion springs is utilized to make the safety card prop against the hook tip of the hook, so as to close the hook mouth of the hook to prevent the rigging from falling off.

However, the conventional hook locking device has mainly the following drawbacks:

(1) The safety card is only suitable for MMD type lifting hooks with lugs, and the double torsion springs are difficult to install in the safety card;

(2) The safety card is a thin steel plate and is easy to deform; in the actual use process, the safety card is easy to be collided, deformed and invalid and needs to be replaced frequently;

(3) The torsion of the torsion spring is needed to be overcome when the safety card is opened, so that the labor is wasted and the rigging is difficult to put into the lifting hook; the double torsion springs are also often easy to damage, so that the hook opening cannot be effectively closed; the rigging is pulled out, and safety accidents occur;

(4) The lifting hook reduces the effective volume of the rope due to the structural form of the traditional lifting hook locking device.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a lifting hook locking device which comprises a hoop component, a locking rod and a handle; the hoop assembly is provided with a self-locking ring, both sides of the hoop assembly are provided with U-shaped locking rods, the opening direction of each locking rod is connected with the handle, and the handle is provided with a cross beam which can be clamped on the self-locking ring.

Further, the locking lever and the handle are connected by a pin.

Further, the hoop assembly comprises a left hoop and a right hoop which are kept relatively fixed through a bolt pair; the two supporting rod arms of the locking rod are respectively arc-shaped; the outer sides of the left hoop and the right hoop are respectively provided with an arc-shaped guide sleeve, and the two support rod arms of the locking rod respectively pass through the two guide sleeves to enable the locking rod to move forwards and backwards so as to lock or unlock the lifting hook.

Preferably, the left hoop and the right hoop respectively comprise an upper hoop and a lower hoop; the upper hoop and the lower hoop are semicircular hoops and are connected through a connecting plate to form a calabash, and the self-locking ring is arranged on the opposite side of the locking rod penetrating into the direction of the guide sleeve.

Another object of the present utility model is to provide a hook, provided with the hook locking device, wherein the hook locking device is hooped on the hook through the hoop assembly.

In combination with the technical scheme and the technical problems to be solved, the technical scheme to be protected has the following advantages and positive effects:

(1) The drawing and closing form of the lifting hook locking device and the arc structure of the locking rod greatly increase the effective volume of the cable in the lifting hook, and increase the diversity of the lifted load; the spring force of the spring is not needed to be overcome, so that the labor is saved, and the cargo is more convenient to assemble and disassemble;

(2) The handle is locked in a mechanical mode and is firmly clamped in the lock catch on the clamp group by means of dead weight, so that the working reliability of the lifting hook locking device is improved, and the service life of the lifting hook locking device is prolonged;

(3) The mounting position of the anchor ear assembly on the hook handle can be adjusted up and down through the adjustment of the bolt pair, so that the anchor ear assembly is applicable to hooks with various sizes and models, and the lifting hook locking device can be used for both the lifting hook with the lugs and the lifting hook without the lugs, so that the application range is further enlarged, and the universality is remarkably improved;

(4) The lifting hook locking device has the advantages of simple structure, convenience in assembly, safety, reliability, simplicity in opening and closing operation and labor saving.

Drawings

FIG. 1 is a schematic view of a hook latch according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a left hoop structure according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a right hoop structure according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of a locking lever according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a handle structure according to an embodiment of the present utility model;

FIG. 6 is a schematic view showing an opened state of a hook locking device according to an embodiment of the present utility model;

FIG. 7 is a schematic view of the effective volume of a hook latch according to an embodiment of the present utility model, wherein the effective volume is shown in the shaded portion;

in the figure: 1. a lifting hook; 2. a locking lever; 3. a left hoop; 4. a right hoop; 5. a bolt pair; 6. a pin; 7. a handle; 8. a guide sleeve; 9. a lower hoop; 10. an upper hoop; 11. a connecting plate; 12. and (5) self-locking ring.

Detailed Description

The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

1. The embodiments are explained. In order to fully understand how the utility model may be embodied by those skilled in the art, this section is an illustrative embodiment in which the claims are presented for purposes of illustration.

As shown in fig. 1 to 5, the utility model provides a lifting hook locking device, which comprises a hoop assembly, a locking rod and a handle 7; the hoop assembly is provided with a self-locking ring 12, both sides of the hoop assembly are provided with U-shaped locking rods 2, the opening direction of each locking rod 2 is connected with a handle 7, and the handles 7 are provided with cross beams which can be clamped on the self-locking rings 12.

Further, the locking lever 2 and the handle 7 are connected by a pin 6.

Further, the hoop assembly comprises a left hoop 3 and a right hoop 4 which are kept relatively fixed through a bolt pair; the two supporting rod arms of the locking rod 2 are respectively arc-shaped; the outer sides of the left hoop 3 and the right hoop 4 are respectively provided with an arc-shaped guide sleeve 8, and the two support rod arms of the locking rod 2 respectively pass through the two guide sleeves 8 to enable the locking rod 2 to move forwards and backwards so as to lock or unlock the lifting hook.

Preferably, the left hoop 3 and the right hoop 4 respectively comprise an upper hoop 10 and a lower hoop 9; the upper hoop 10 and the lower hoop 9 are semicircular hoops and are connected through a connecting plate 11 to form a calabash, and a self-locking ring 12 is arranged on the opposite side of the locking rod penetrating into the direction of the guide sleeve 8.

2. Application example. In order to prove the inventive and technical value of the technical solution of the present utility model, this section is an application example on specific products or related technologies of the claim technical solution.

As shown in fig. 6 and 7, the present utility model provides a hook, which is provided with the hook locking device, and the hook locking device is hooped on the hook through a hoop assembly, and the working principle of the hook is as follows: when the lifting hook lifts the goods, the handle 7 is lifted upwards, the handle 7 is higher than the self-locking ring 12, and the handle 12 is pulled to the rear of the lifting hook to drive the locking rod 2 to move to the rear of the lifting hook (the direction away from the hook opening of the lifting hook) along the direction of the guide sleeve 8, so that the hook opening of the lifting hook and the locking rod are opened, as shown in fig. 4; putting a rigging into a hook, pushing a handle 12 to the front of the hook (the direction close to the hook opening of the hook) to drive a locking rod 2 to move to the front of the hook along the direction of a guide sleeve 8 until the locking rod 2 butts against the hook tip of the hook to enable the hook opening of the hook and the locking rod to form a closed state, putting down a handle 7 to enable a cross rod in the handle 7 to be clamped into the self-locking ring 12, and as shown in fig. 2, clamping the handle 7 into the self-locking ring 12 under the action of gravity to prevent the locking rod 2 from moving to the rear of the hook, thereby preventing the rigging from falling out of the hook opening and playing a role of locking the hook; when the goods are lifted to the unloading position, the handle 7 is lifted upwards, the handle 7 is higher than the self-locking ring 12, the handle 12 is pulled to the rear of the lifting hook to drive the locking rod 2 to move to the rear of the lifting hook (the direction away from the hook opening of the lifting hook) along the direction of the guide sleeve 8, so that the hook opening of the lifting hook and the locking rod are opened, and the rigging is taken out to unload the goods.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The foregoing is merely illustrative of specific embodiments of the present utility model, and the scope of the utility model is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present utility model will be apparent to those skilled in the art within the scope of the present utility model.

Claims

1. The lifting hook locking device is characterized by comprising a hoop assembly, a locking rod and a handle;

the hoop assembly is provided with a self-locking ring, both sides of the hoop assembly are provided with U-shaped locking rods, the opening direction of each locking rod is connected with the handle, and the handle is provided with a cross beam which can be clamped on the self-locking ring.

2. The hook latch apparatus of claim 1 wherein the latch lever and handle are connected by a pin.

3. The hook latch according to claim 1, wherein said anchor ear assembly includes a left anchor ear and a right anchor ear held relatively fixed by a bolt pair;

the two supporting rod arms of the locking rod are respectively arc-shaped;

the outer sides of the left hoop and the right hoop are respectively provided with an arc-shaped guide sleeve, and the two support rod arms of the locking rod respectively pass through the two guide sleeves to enable the locking rod to move forwards and backwards so as to lock or unlock the lifting hook.

4. The hook latch according to claim 3, wherein the left and right anchors include upper and lower anchors, respectively;

the upper hoop and the lower hoop are semicircular hoops and are connected through a connecting plate to form a calabash, and the self-locking ring is arranged on the opposite side of the direction of the locking rod penetrating into the guide sleeve.

5. A lifting hook provided with a lifting hook locking device according to any one of claims 1 to 4, the lifting hook locking device being attached to the lifting hook by means of an anchor ear assembly.