CN209835426U - Self-locking latch hook - Google Patents

Abstract

The utility model discloses a self-locking latch hook belongs to the latch hook field. Including rings, rotation fix rotatory piece on rings and with rotatory fixed couple of piece, the couple upper end has an opening, the opening internal rotation is fixed with a spring bolt, the upper end of spring bolt is fixed with a traction block, rotatory piece center has a direction passageway, be connected with a haulage rope on the traction block, the haulage rope is followed stretch out in the direction passageway and be connected to a pull ring. Thereby can make the pull ring shift up when hoist and mount goods and straighten the haulage rope, make the spring bolt deflect to with the gib head butt of couple, can keep the contact state always at the hoist and mount in-process, avoid appearing the condition that the goods drops from the couple.

Description

Self-locking latch hook

Technical Field

The utility model relates to a self-locking latch hook belongs to the latch hook field.

Background

The latch hook is often used for hoisting goods, it generally includes rings, rotates to be fixed rotatory piece on the rings and with the couple that rotatory piece is fixed, overlap the rope during the use on rings can carry out the cargo handling, in order to ensure that the rope drops in the use, current latch hook all still can articulate a spring bolt on the couple and be used for the anticreep, articulated department is equipped with a torsional spring that is used for making the spring bolt reset, the spring bolt of this kind of locking mode has certain anticreep effect, but long-term after using, torsional spring deformation seriously leads to the spring bolt to descend promptly and can't play the effect of anticreep, and, when the swing appears in latch hook position in the use goods still directly has the risk that breaks away from with the couple.

Disclosure of Invention

The utility model discloses the technical problem that will solve lies in: the self-locking latch hook solves the problems that the existing latch hook is poor in self-locking effect and the hook is easy to separate from goods.

The utility model discloses the technical problem that will solve takes following technical scheme to realize:

the utility model provides a self-locking latch hook, includes rings, rotates to be fixed rotatory piece on rings and with rotatory fixed couple of piece, the couple upper end has an opening, the opening internal rotation is fixed with a spring bolt, the upper end of spring bolt is fixed with a traction block, rotatory piece center has a direction passageway, be connected with a haulage rope on the traction block, the haulage rope is followed stretch out in the direction passageway and be connected to a pull ring.

Through adopting above-mentioned technical scheme, pass the pull ring with the rope and overlap on rings, during hoist and mount goods, the rope is stretched straightly and is pulled up the pull ring to make the haulage rope stretch straightly and drive the spring bolt and deflect to the other end and support tightly with the gib head front end, because hoist and mount in-process pull ring position is higher than the position under its natural state, thereby can make the haulage rope keep the state of stretching straightly and avoid droing with the spring bolt tensioning.

As a preferable example, the rotating block comprises a rotating shaft, an upper limiting block and a lower limiting block, the upper limiting block and the lower limiting block are respectively fixed at the upper end and the lower end of the rotating shaft, a through hole matched with the rotating shaft is formed in the hanging ring, an accommodating cavity is formed in the lower limiting block, the centers of the upper limiting block and the rotating shaft are hollow to form a guide channel communicated with the accommodating cavity, the upper end of the hook is fixed with the lower limiting block, and the upper end of the traction block extends into the accommodating cavity.

Through adopting above-mentioned technical scheme, make the traction block be located and hold the intracavity swing, reduce the size of opening part in order to avoid influencing structural strength.

As a preferred example, the lock tongue is rotatably fixed in the opening through a pin shaft.

As a preferred example, the hook head of the hook is provided with a notch matched with the lock tongue, and the lock tongue is clamped in the notch in the locking state.

The utility model has the advantages that: thereby can make the pull ring shift up when hoist and mount goods and straighten the haulage rope, make the spring bolt deflect to with the gib head butt of couple, can keep the contact state always at the hoist and mount in-process, avoid appearing the condition that the goods drops from the couple.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic view of the present invention.

In the figure: rings 1, couple 2, opening 3, spring bolt 4, traction block 5, direction passageway 6, haulage rope 7, pull ring 8, rotation axis 9, go up spacing piece 10, spacing piece 11 down holds chamber 12, round pin axle 13, breach 14.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.

As shown in fig. 1 and 2, the self-locking latch hook comprises a hanging ring 1, a rotating block rotatably fixed on the hanging ring 1, and a hook 2 fixed with the rotating block, wherein an opening 3 is formed in the upper end of the hook 2, a latch tongue 4 is rotatably fixed in the opening 3, a traction block 5 is fixed at the upper end of the latch tongue 4, a guide channel 6 is formed in the center of the rotating block, a traction rope 7 is connected to the traction block 5, and the traction rope 7 extends out of the guide channel 6 and is connected to a pull ring 8.

Furthermore, the rotating block comprises a rotating shaft 9, an upper limiting block 10 and a lower limiting block 11 which are fixed to the upper end and the lower end of the rotating shaft 9 respectively, a through hole matched with the rotating shaft 9 is formed in the hanging ring, an accommodating cavity 12 is formed in the lower limiting block 11, the centers of the upper limiting block 10 and the rotating shaft 9 are hollow to form a guide channel 6 communicated with the accommodating cavity 12, the upper end of the hook 2 is fixed to the lower limiting block 11, and the upper end of the traction block 5 extends into the accommodating cavity 12.

Furthermore, the bolt 4 is rotatably fixed in the opening 3 through a pin 13.

Further, the hook head of the hook 2 is provided with a notch 14 matched with the bolt 4.

As shown in fig. 3, during hoisting, the rope sequentially passes through the pull ring 8 and the hanging ring 1, and when the rope is straightened, the pull ring 8 is driven to move upwards, so that the lock tongue 4 is just matched with the notch 14 of the hook 2 when the pull ring 8 moves upwards to contact with the hanging ring 1, which is the best implementation effect.

Meanwhile, in order to avoid the situation that the position of the pull ring 8 is changed during hoisting so that the pull rope 7 is excessively tensioned, the pull rope 7 can also adopt a rope with certain elasticity, and a deformation space is provided for micro motion of the pull ring 8.

Thereby can make pull ring 8 shift up when hoist and mount goods and straighten haulage rope 7, make spring bolt 4 deflect to with the gib head butt of couple 2, can keep contact state always at the hoist and mount in-process, avoid appearing the condition that the goods drops from couple 2.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. A self-locking latch hook comprises a hanging ring, a rotating block rotationally fixed on the hanging ring and a hook fixed with the rotating block, and is characterized in that an opening is formed in the upper end of the hook, a lock tongue is rotationally fixed in the opening, a traction block is fixed at the upper end of the lock tongue, a guide channel is formed in the center of the rotating block, a traction rope is connected to the traction block, and the traction rope extends out of the guide channel and is connected to a pull ring.

2. The self-locking latch hook according to claim 1, wherein the rotating block comprises a rotating shaft, an upper limiting block and a lower limiting block, the upper limiting block and the lower limiting block are respectively fixed at the upper end and the lower end of the rotating shaft, a through hole matched with the rotating shaft is formed in the hanging ring, an accommodating cavity is formed in the lower limiting block, a guide channel communicated with the accommodating cavity is formed in the centers of the upper limiting block and the rotating shaft in a hollow mode, the upper end of the hook is fixed with the lower limiting block, and the upper end of the traction block extends into the accommodating cavity.

3. The self-locking latch hook of claim 1, wherein the latch is pivotally secured within the opening by a pin.

4. The self-locking latch hook of claim 1, wherein the hook head of the hook has a notch for engaging with the latch.