CN220998933U - Hook locking device of lorry-mounted crane - Google Patents

Abstract

The utility model relates to the technical field of cranes and discloses a crane hook locking device which comprises a hanging ring and a hanging hook, wherein a first installation convex part and a second installation convex part are respectively arranged at the top part of a hook of the hanging hook and the inner side of the tail part of the hook, locking arms capable of automatically resetting and rotating around the first installation convex part are movably arranged at the two sides of the first installation convex part, the locking arms are not contacted with the hanging hook when rotating, barb parts are symmetrically and fixedly arranged at the two sides of the second installation convex part, the free ends of the locking arms extend to the barb parts, a group of locking rods are movably arranged between the two groups of locking arms, and the locking rods can slide at the two ends of the locking arms and are always hooked with the barb parts under the action of gravity. In the utility model, after the rope completely enters the lifting hook, the locking arm is pressed down to the locking hook, so that the locking rod and the locking hook are mutually hooked, the lifting appliance can not break through the locking state from the inside of the lifting hook during lifting, and the lifting appliance is convenient to load.

Description

Hook locking device of lorry-mounted crane

Technical Field

The utility model relates to the technical field of cranes, in particular to a hook locking device of a lorry-mounted crane.

Background

The crane hook is a lifting appliance commonly used in hoisting machinery, and is often hung on a steel wire rope of a hoisting mechanism by means of pulley blocks and other parts and used for connecting loads and preventing heavy objects from falling off during hoisting. At present, the existing lifting hook locking device adopts a spring lifting hook safety card structure when leaving the factory, namely, the spring blocking piece is propped against the inner side of the tip of the lifting hook, so that the spring lifting hook safety card is hinged to the hook strength of the lifting hook, the lifting hook safety card is in a locking state by means of spring force, but the locking device by means of the spring is easy to produce the problem of incomplete locking or difficult to take down the lifting appliance when the spring fails.

The searched Chinese patent publication No. CN217894882U discloses a crane hook locking device, which comprises an electromagnetic chuck and is characterized in that: one end of the first safety card and one end of the second safety card are arranged into an arc hook mouth shape, a connecting through hole is formed in one side of the arc hook mouth, a bolt penetrates into the through hole, a nut is used for fastening, the first safety card and the second safety card are fixedly connected through a balancing weight, one side of the assembling block is arc-shaped and matched with a lifting hook, an electromagnetic chuck is arranged at a crane lifting hook pulling plate close to one side of the balancing weight, and the electromagnetic chuck is connected with a power supply device.

However, the gravity on one side is only relied on, and under the condition that the lifting appliance can not shake, the locking force generated on the lifting appliance from the opening of the lifting hook is only the same as the weight of the balancing weight, and once the lifting appliance shakes to break through the gravity of the balancing weight, the lifting appliance can possibly slide out of the lifting hook, so that a locking device which does not rely on elasticity and can completely enable the lifting appliance to break through a locking state from the inside of the lifting hook is needed.

For this purpose, we propose a lorry-mounted crane hook locking device.

Disclosure of utility model

The utility model mainly solves the technical problems in the prior art and provides a hook locking device of a lorry-mounted crane.

In order to achieve the above purpose, the utility model adopts the following technical scheme that the locking device of the lifting hook of the lorry crane comprises a lifting ring and a lifting hook, wherein a first installation convex part and a second installation convex part are respectively arranged at the top part of a hook of the lifting hook and the inner side of the tail part of the lifting hook, locking arms rotating around the first installation convex part are movably arranged at two sides of the first installation convex part, the locking arms do not contact with the lifting hook when rotating, barb parts are symmetrically and fixedly arranged at two sides of the second installation convex part, the free ends of the locking arms extend to the barb parts, a group of locking rods are movably arranged between the two groups of locking arms, and the locking rods can slide at two ends of the locking arms and are always hooked with the barb parts under the action of gravity.

Preferably, the first installation convex part is horizontally and fixedly provided with a first bolt, two ends of the first bolt are symmetrically and movably provided with rotating shafts capable of rotating around the first bolt, the locking arm is arranged on the side wall surface of the rotating shaft, the second installation convex part is horizontally and fixedly provided with a second bolt, and the barb parts are fixedly arranged at two ends of the second bolt.

Preferably, the barb portion comprises locking blocks fixedly mounted at two ends of the second bolt, a locking hook is integrally formed at the top of the locking block, and protrudes out of the tail of the lifting hook and is bent inwards to form a barb-shaped structure.

Preferably, a gasket is adhered to the locking block at a position close to the tail of the lifting hook.

Preferably, a torsion spring is fixedly installed between the rotating shaft and the first installation convex part.

Preferably, the side wall surface of the locking arm is provided with a sliding groove, the inside of the sliding groove is also provided with a groove, the two ends of the locking rod are fixedly provided with sliding sleeves corresponding to the positions in the groove of the sliding groove, and the sliding sleeves can slide in the groove in the sliding groove.

Preferably, an elastic spring is further arranged in the sliding groove, and two ends of the elastic spring are respectively connected with the sliding sleeve and one end, close to the rotating shaft, of the sliding groove.

Advantageous effects

The utility model provides a lifting hook locking device of a lorry-mounted crane. The beneficial effects are as follows:

When the rope is mounted, connecting pieces such as a rope are pressed downwards from a hook part of the lifting hook to push the locking arm to rotate downwards around the first bolt until the rope completely enters the lifting hook, after the rope is separated from the interference of the locking arm, the locking arm is rotated upwards to reset under the action of the elastic force of the torsion spring until the end part of the locking arm is overlapped with the locking hook, at the moment, the locking rod in the locking arm is mutually hooked with the locking hook, so that the rope cannot prop up the locking arm from the inside of the lifting hook to realize complete locking, when the rope is thicker, the locking arm can be rotated upwards, after the rope completely enters the inside of the lifting hook, the locking arm is pressed down to the locking hook, and the locking rod and the locking hook are mutually hooked, so that the complete locking state can be achieved and the loading is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, proportional changes, or adjustments of size, which do not affect the efficacy of the utility model or the objects achieved, should fall within the scope of the utility model.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a partial exploded view of the present utility model;

FIG. 3 is a schematic view of the structure of the locking lever of the present utility model;

FIG. 4 is a schematic view showing a first unoccluded state according to the present utility model;

FIG. 5 is a schematic diagram showing a second unoccluded state according to the present utility model.

Legend description:

1.A hanging ring; 2. a lifting hook; 3. a first mounting boss; 4. a second mounting boss; 5. a first bolt; 6. a torsion spring; 7. a rotating shaft; 8. a locking arm; 9. a locking lever; 10. a locking block; 11. a gasket; 12. locking hook; 13. a second bolt; 14. a chute; 15. a sliding sleeve; 16. and an elastic spring.

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.

1-5, Including rings 1 and lifting hook 2, the crotch top and the bottom inboard of lifting hook 2 are provided with first installation convex part 3 and second installation convex part 4 respectively, horizontal fixed mounting has first bolt 5 on the first installation convex part 3, the symmetrical movable mounting in both ends of first bolt 5 has the pivot 7 that can rotate around first bolt 5, the lateral wall integrated into one piece of pivot 7 is provided with locking arm 8, the lateral wall of locking arm 8 has seted up spout 14, movable mounting has the locking lever 9 that can follow spout 14 slidable in the spout 14, locking arm 8 can rotate around first installation convex part 3 this moment, locking lever 9 can slide in locking arm 8, horizontal fixed mounting has second bolt 13 on the second installation convex part 4, the both ends fixed mounting of second bolt 13 have locking piece 10, the top integrated into one piece of locking piece 10 is provided with locking hook 12, locking hook 12 is protruding in lifting hook 2 afterbody and inwards bending into hook 2, further, two sets of locking arms 8 are located the both sides of lifting hook 2, when locking arm 8 is around first swinging arm 5, the effect of locking arm 8 and locking arm 2 can's the very high enough to be in the inside the same with locking arm 8, the effect of locking arm 12 can's interlock when the very high-end is located under the very high-lift hook condition of the interlock rope, can's the very much, the effect of locking arm is located under the inside the locking arm is at the same condition with the locking arm 8, and can's the inside the locking arm is very high, the inside can's with the locking arm is very high, and can't be moved under the condition from the locking arm is at the locking hook 12, the inside, and can't be at the inside from the locking hook 2.

Simultaneously with locking arm 8 setting in lifting hook 2 both sides, can make locking arm 8 rotate and can not produce the interference with lifting hook 2 for lifting hook 2 when hoist and mount, the rope can directly break through locking arm 8 and to lifting hook 2 internal rotation, locking lever 9 also can be gradually draw close to first bolt 5 because of producing the interference with lifting hook 2, make locking arm 8 can rotate to the maximize, after hoist and mount load is accomplished, locking arm 8 is rotatory to lifting hook 2 afterbody, locking lever 9 moves down gradually, finally produces the closure.

In another loading process, for example, the rope is thicker, the locking arm 8 can interfere with the rope when rotating towards the tail of the lifting hook 2, the locking arm 9 should be directly pulled out of the locking hook 12, then the locking arm 8 is rotated upwards, so that the locking arm 8 does not interfere with the rope when being reset, and meanwhile, the arc-shaped hook-shaped structure of the locking hook 12 can not block the locking arm 9 when the locking arm 8 rotates downwards to reset, and locking is completed.

In order to enable the locking arm 8 to reset to the free end automatically to coincide with the locking hook 12, a torsion spring 6 is fixedly installed between the rotating shaft 7 and the first installation convex part 3, and the torsion spring 6 is of a conventional structure and is not described herein.

In other embodiments, the locking block 10 is adhered with a gasket 11 near the tail of the hook 2, and the gasket 11 is made of rubber material and is buffered when bearing locking pressure.

In other embodiments, a groove is further formed in the chute 14, and sliding sleeves 15 are fixedly installed at two ends of the locking rod 9 corresponding to positions in the grooves of the chute 14, and the sliding sleeves 15 can slide in the grooves in the chute 14, so that the locking rod 9 cannot move left and right, and the locking rod 9 is limited.

In the preferred embodiment, the inside of the chute 14 is also provided with an elastic spring 16, two ends of the elastic spring 16 are respectively connected with the sliding sleeve 15 and one end of the chute 14, which is close to the rotating shaft 7, and under the action of the elastic force of the elastic spring 16, the locking rod 9 is not only under the action of gravity, but also under the action of the elastic force of the elastic spring 16, so that the locking rod 9 has a tendency to move towards the free end of the locking arm 8 no matter what angle the locking arm 8 rotates.

In other embodiments, the free end of the latch arm 8 overlaps the latch hook 12, and the middle portion is outwardly convex to form an arc shape, so that the latch arm 8 can generate a larger mounting space in a rotary loading state.

The working principle of the utility model is as follows: when the lifting hook is mounted, connecting pieces such as ropes are pressed downwards from the hooks of the lifting hook 2, the locking arms 8 are pushed to rotate downwards around the first bolts 5 until the ropes completely enter the lifting hook 2, after the ropes are separated from the interference of the locking arms 8, the locking arms 8 are rotated upwards to reset under the action of the elastic force of the torsion springs 6 until the ends of the locking arms are overlapped with the locking hooks 12, at the moment, the locking rods 9 in the locking arms 8 are mutually hooked with the locking hooks 12, the ropes cannot jack the locking arms 8 from the inside of the lifting hook 2 to realize complete locking, when the ropes are thicker, the locking arms 8 can be rotated upwards, after the ropes completely enter the inside of the lifting hook 2, the locking arms 8 are pressed down to the positions of the locking hooks 12, and the locking rods 9 and the locking hooks 12 are mutually hooked, so that the complete locking state can be achieved and the lifting hook is convenient to load.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a lorry crane lifting hook blocking device, includes rings (1) and lifting hook (2), its characterized in that: the utility model discloses a lifting hook, including hook top and afterbody, hook top and afterbody inboard, hook top and afterbody, respectively, be provided with first installation convex part (3) and second installation convex part (4), the both sides movable mounting of first installation convex part (3) is around rotatory latch arm (8) of first installation convex part (3), latch arm (8) do not contact with lifting hook (2) when rotatory, the bilateral symmetry fixed mounting of second installation convex part (4) has barb portion, the free end of latch arm (8) extends to barb portion and two sets of movable mounting has a set of latch lever (9) between latch arm (8), latch lever (9) can slide at the both ends of latch arm (8) just latch lever (9) are hooked with barb portion all the time under the effect of gravity.

2. The lorry-mounted crane hook locking device according to claim 1, characterized in that: the novel anti-theft lock is characterized in that a first bolt (5) is horizontally and fixedly arranged on the first installation convex part (3), a rotating shaft (7) capable of rotating around the first bolt (5) is symmetrically and movably arranged at two ends of the first bolt (5), a locking arm (8) is arranged on the side wall surface of the rotating shaft (7), a second bolt (13) is horizontally and fixedly arranged on the second installation convex part (4), and barb parts are fixedly arranged at two ends of the second bolt (13).

3. A lorry-mounted crane hook locking device as claimed in claim 2, wherein: the barb portion comprises locking blocks (10) fixedly arranged at two ends of the second bolt (13), a locking hook (12) is integrally formed at the top of each locking block (10), and each locking hook (12) protrudes out of the tail of the lifting hook (2) and bends inwards to form a barb-shaped structure.

4. A lorry-mounted crane hook locking device according to claim 3, characterised in that: and a gasket (11) is adhered to the position of the locking block (10) close to the tail part of the lifting hook (2).

5. A lorry-mounted crane hook locking device as claimed in claim 2, wherein: a torsion spring (6) is fixedly arranged between the rotating shaft (7) and the first installation convex part (3).

6. The lorry-mounted crane hook locking device according to claim 1, characterized in that: the side wall surface of the locking arm (8) is provided with a sliding groove (14), the inside of the sliding groove (14) is also provided with a groove, the two ends of the locking rod (9) are fixedly provided with sliding sleeves (15) corresponding to the positions in the grooves of the sliding groove (14), and the sliding sleeves (15) can slide in the grooves in the sliding groove (14).

7. The lorry-mounted crane hook locking device as claimed in claim 6, wherein: an elastic spring (16) is further arranged in the sliding groove (14), and two ends of the elastic spring (16) are respectively connected with the sliding sleeve (15) and one end, close to the rotating shaft (7), of the sliding groove (14).