CN220011870U - Eye-type self-locking safety hook - Google Patents

Abstract

The utility model discloses a loop eye type self-locking safety hook, which relates to the field of rigging, and comprises a hook body, a swing arm and a trigger button, wherein the swing arm is rotationally connected with the hook body through a connecting shaft; the spanner buckle is rotationally connected with the hook body through a cylindrical pin, a torsion spring is sleeved on the cylindrical pin, and two ends of the torsion spring are respectively propped against the spanner buckle and the hook body; the front end of the spanner is provided with a latch for supporting the swing arm, the rear end of the spanner is provided with a pressing handle for spanner, the swing arm is provided with a clamping recess corresponding to the latch, and a limit groove is arranged above the clamping recess and is in limit fit with the latch; the hook body is provided with a concave groove at a position corresponding to the pressing handle. According to the utility model, the limit groove is matched with the spanner, so that the opening amplitude of the swing arm is limited, fingers are prevented from being injured during the use process, and the use safety is improved.

Description

Eye-type self-locking safety hook

Technical Field

The utility model relates to the field of rigging, in particular to a loop eye type self-locking safety hook.

Background

The eye-type self-locking safety hook is a rigging which is the most common in hoisting machinery and is widely applied to various industries such as ports, electric power, steel, shipbuilding, construction and the like. As shown in fig. 1, the existing eye-type self-locking safety hook mainly comprises a hook body 1, a swing arm 2 and a pulling buckle 3, wherein the swing arm 2 is rotationally connected to the hook body 1 through a connecting shaft, an eye 4 for rope tying is integrally formed at the top of the swing arm 2, the pulling buckle 3 is arranged in a containing groove of the hook body, the pulling buckle 3 is rotationally connected to the hook body through a cylindrical pin, and a torsion spring is sleeved on a cylindrical pin and two ends of the torsion spring respectively support the pulling buckle 3 and the hook body 1. The clamp teeth used for supporting the swing arm 2 are arranged on the spanner 3, the clamp grooves are arranged on the swing arm 2 corresponding to the clamp teeth, the closed state of the swing arm 2 is kept through the supporting and limiting action of the clamp teeth and the clamp grooves, and the spanner 3 is downwards shifted to open the swing arm 2.

The safety hook with the structure has the following problems: when the trigger button is pressed to open the swing arm, the swing arm is easy to open to an excessive extent, so that the finger of a person is injured by the ring eye in a squeezing way.

Disclosure of Invention

Based on the problems, the utility model aims to provide a loop eye type self-locking safety hook, which adopts the following technical scheme:

the utility model provides a loop eye type self-locking safety hook which comprises a hook body, a swing arm and a spanner, wherein a loop eye for rope tying is arranged at the top of the swing arm; the top of the hook body is provided with a containing groove, the swing arm is arranged in the containing groove, and the swing arm is rotationally connected with the hook body through a connecting shaft; the pulling buckle is arranged in the accommodating groove, the pulling buckle is rotationally connected with the hook body through a cylindrical pin, a torsion spring is sleeved on the cylindrical pin, and two ends of the torsion spring are respectively propped against the pulling buckle and the hook body; the front end of the pulling buckle is provided with a latch for supporting the swing arm, the rear end of the pulling buckle is provided with a pressing handle for pulling, the swing arm is provided with a clamping recess corresponding to the latch, the swing arm is provided with a limit groove above the clamping recess, and the limit groove is in limit fit with the latch; the hook body is provided with a concave groove at a position corresponding to the pressing handle.

Preferably, the concave groove is arc-shaped.

Preferably, a sliding rail is arranged on the outer wall surface of the upper part of the hook body, a limiting sliding block capable of sliding up and down is connected to the sliding rail in a sliding and clamping mode, and the front end of the limiting sliding block is abutted to the bottom of the pressing handle.

Preferably, the sliding rail and the hook body are integrally formed.

Preferably, the limit sliding block comprises a sliding block body, the bottom surface of the sliding block body is provided with a sliding groove matched with the sliding rail in a sliding clamping manner, the front end of the sliding groove is of a closed structure, and the rear end of the sliding groove is of an open structure; the rear end of the sliding block body is provided with a detachable tail plate, and the front end of the sliding block body is provided with a bending section.

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

according to the utility model, the limit groove is matched with the spanner, so that the opening amplitude of the swing arm is limited, fingers are prevented from being injured during the use process, and the use safety is improved.

Drawings

The utility model is further described with reference to the following description of the drawings.

FIG. 1 is a schematic view of a front view of a self-locking safety hook according to the prior art;

FIG. 2 is a schematic view of a middle loop eye type self-locking safety hook according to an embodiment of the present utility model;

FIG. 3 is a schematic view showing a closed state of a loop eye type self-locking safety hook according to an embodiment of the present utility model;

FIG. 4 is a schematic view showing an opened state of a loop eye type self-locking safety hook according to an embodiment of the present utility model;

FIG. 5 is a schematic structural diagram of a non-contact state between a limit slider and a pressing handle in a second embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a contact state between a limit slider and a pressing handle in a second embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a limit slider in a second embodiment of the present utility model.

Reference numerals illustrate: 1. a hook body; 101. a receiving groove; 102. a concave groove; 2. swing arms; 201. a clamping recess; 202. a limit groove; 3. pulling and buckling; 301. latch teeth; 302. pressing a handle; 4. a ring eye; 5. a cylindrical pin; 6. a torsion spring; 7. a connecting shaft; 8. a limit sliding block; 801. a slider body; 802. a chute; 803. a tail plate; 804. a curved section; 9. a slide rail.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments.

Example 1

As shown in fig. 2 to 4, the embodiment discloses a loop eye type self-locking safety hook, which comprises a hook body 1, a swing arm 2 and a trigger 3, wherein the top of the swing arm 2 is provided with a loop eye 4 for rope tying; the top of the hook body 1 is provided with a containing groove 101, the swing arm 2 is arranged in the containing groove 101, and the swing arm 2 is rotationally connected with the hook body 1 through a connecting shaft 7; the pulling buckle 3 is arranged in the accommodating groove 101, the pulling buckle 3 is rotationally connected with the hook body 1 through a cylindrical pin 5, a torsion spring 6 is sleeved on the cylindrical pin 5, and two ends of the torsion spring 6 are respectively propped against the pulling buckle 3 and the hook body 1; the front end of the spanner 3 is provided with a latch 301 for supporting the swing arm 2, the rear end of the spanner 3 is provided with a pressing handle 302 for spanner, and the swing arm 2 is provided with a latch 201 corresponding to the latch 301. The closed state of the swing arm 2 is maintained through the abutting limiting action of the latch 301 and the latch 201.

In this embodiment, a limiting groove 202 is disposed above the latch 201 on the swing arm 2, and the limiting groove 202 is in limiting fit with the latch 301; after the pressing handle 302 is pressed to release the abutting limiting function of the latch 301 and the clamping recess 201, the swing arm 2 can be opened, and when the swing arm 2 is opened, the latch 301 is embedded into the limiting groove 202 in the counterclockwise rotating process, so that the continued rotation of the swing arm 2 is limited, and further, the ring eye 4 is prevented from being extruded to hurt fingers of people.

Meanwhile, in order to further protect the finger, in this embodiment, a concave groove 102 is provided on the hook body 1 at a position corresponding to the pressing handle 302, and the concave groove 102 enlarges the space for finger operation, so as to further protect the finger. In this embodiment, the concave groove 102 has a circular arc shape.

As shown in fig. 4, after the latch 301 is embedded into the limiting groove 202, the latch 301 can enable the swing arm 2 to keep the current open state, so that the hook cannot be closed before bearing no load, and the operation is convenient.

Example two

As shown in fig. 5 to 6, in order to further improve the safety of the hook, in this embodiment, on the basis of the technology of the first embodiment, a sliding rail 9 is disposed on the outer wall surface of the upper portion of the hook body 1, a limiting slider 8 capable of sliding up and down is slidably clamped on the sliding rail 9, and the limiting slider 8 slides up along the sliding rail 9, so that the front end of the limiting slider 8 abuts against the bottom of the pressing handle 302, and thus, the situation that the trigger 3 is pressed and pulled under unexpected conditions can be avoided, and the trigger 3 is opened unexpectedly can be avoided.

As shown in fig. 7, the limit slider 8 includes a slider body 801, a sliding groove 802 slidably engaged with the sliding rail 9 is provided on the bottom surface of the slider body 801, and the front end of the sliding groove 802 is in a closed structure and the rear end thereof is in an open structure. The rear end of the slider body 801 is provided with a tail plate 803, and the tail plate 803 is fixed on the slider body 801 through bolts, so that the limit slider 8 is prevented from falling off the slide rail 9 when sliding.

The front end of the slider body 801 is provided with a bending section 804, and when the limit slider 8 slides upwards along the sliding rail 9, the bending section 804 can just extend to the bottom of the pressing handle 302, so as to form an interference effect on the pressing handle 302.

In this embodiment, the slide rail 9 is integrally formed with the hook body 1. The limit slider 8 can be made of plastic, and the size of the chute 802 is smaller than that of the slide rail 9, so that when the limit slider 8 slides, certain damping exists.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims (5)

1. The eye-type self-locking safety hook comprises a hook body (1), a swing arm (2) and a spanner (3), wherein an eye (4) for rope tying is arranged at the top of the swing arm (2); the top of the hook body (1) is provided with a containing groove (101), the swing arm (2) is arranged in the containing groove (101), and the swing arm (2) is rotationally connected with the hook body (1) through a connecting shaft (7); the pulling buckle (3) is arranged in the accommodating groove (101), the pulling buckle (3) is rotationally connected with the hook body (1) through a cylindrical pin (5), a torsion spring (6) is sleeved on the cylindrical pin (5), and two ends of the torsion spring (6) are respectively propped against the pulling buckle (3) and the hook body (1); the front end of pulling knot (3) is provided with and is used for supporting latch (301) of swing arm (2), the rear end of pulling knot (3) is provided with and is used for pulling pressure handle (302), correspond on swing arm (2) latch (301) are provided with card concave (201), its characterized in that: a limiting groove (202) is formed in the swing arm (2) above the clamping groove (201), and the limiting groove (202) is in limiting fit with the clamping tooth (301); the hook body (1) is provided with a concave groove (102) at a position corresponding to the pressing handle (302).

2. The eye-type self-locking safety hook according to claim 1, wherein: the concave groove (102) is arc-shaped.

3. The eye-type self-locking safety hook according to claim 1, wherein: the novel hook is characterized in that a sliding rail (9) is arranged on the outer wall surface of the upper portion of the hook body (1), a limiting sliding block (8) capable of sliding up and down is connected to the sliding rail (9) in a sliding and clamping mode, and the front end of the limiting sliding block (8) is abutted to the bottom of the pressing handle (302).

4. A loop-eye self-locking safety hook according to claim 3, wherein: the sliding rail (9) and the hook body (1) are integrally formed.

5. A loop-eye self-locking safety hook according to claim 3, wherein: the limiting sliding block (8) comprises a sliding block body (801), a sliding groove (802) which is in sliding clamping fit with the sliding rail (9) is arranged on the bottom surface of the sliding block body (801), the front end of the sliding groove (802) is of a closed structure, and the rear end of the sliding groove is of an open structure; the rear end of the sliding block body (801) is provided with a detachable tail plate (803), and the front end of the sliding block body (801) is provided with a bending section (804).