CN219408962U - Lifting hook structure capable of self-balancing - Google Patents

Abstract

The utility model relates to a self-balancing lifting hook structure, and belongs to the technical field of tower cranes. The connecting device comprises a pulley block, a connecting beam, a hook head group and connecting pin shafts, wherein the pulley block, the connecting beam and the hook head group are connected together through the connecting pin shafts, the pulley block is provided with 2 groups, the 2 groups of pulley blocks are arranged at two ends of the connecting beam, the hook head group is arranged at the bottom of the connecting beam, and three connecting pin shafts between the 2 groups of pulley blocks and the hook head group and the connecting beam are not in the same straight line. The beneficial effects of the utility model are as follows: according to the utility model, the moment arm is changed so that the lifting hook can have a moment balance position, so that the lifting hook cannot swing back and forth without stopping when lifting and falling, the safety risk is reduced, and the integral safety and stability of the structure are ensured. By utilizing the moment balance principle, the hanging hook connecting beam realizes different moment arms under the condition of slight inclination, and can still realize the self-balancing state of the hanging hook under the condition that the stress of hanging hook pulley blocks at two ends is unequal.

Description

Lifting hook structure capable of self-balancing

Technical Field

The utility model relates to a self-balancing lifting hook structure, and belongs to the technical field of tower cranes.

Background

The lifting hook is an important component part of the tower crane and mainly comprises a hook head and pulley blocks, and for large-tonnage tower cranes, a group of pulley blocks cannot meet the lifting requirement, two or more pulley blocks are needed to be formed together, at the moment, the hook head is connected with the pulley blocks by using a cross beam, and the problem that the connecting beam swings back and forth to be unbalanced exists when the traditional lifting hook structure is lifted and lowered.

The pulley is in the very big potential safety hazard of rocking owing to moment imbalance comes in when going up and down. When severe, the swing angle of the connecting beam is too large, the stress distribution is seriously uneven, so that the lifting hook is damaged, even the steel wire rope is broken, and accidents occur.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a self-balancing lifting hook structure, which avoids continuous swinging when the lifting hook lifts or falls. The novel self-balancing structure can self-adjust the moment arm when the lifting hook is lifted so that the moment balance is kept in a static state.

The utility model is realized by the following technical scheme: a hook structure capable of self-balancing, characterized in that: the connecting device comprises a pulley block, a connecting beam, a hook head group and connecting pin shafts, wherein the pulley block, the connecting beam and the hook head group are connected together through the connecting pin shafts, the pulley block is provided with 2 groups, the 2 groups of pulley blocks are arranged at two ends of the connecting beam, the hook head group is arranged at the bottom of the connecting beam, and three connecting pin shafts between the 2 groups of pulley blocks and the hook head group and the connecting beam are not in the same straight line.

The connecting beam adopts an inverted isosceles triangle structure, 2 groups of pulley blocks are arranged at the bottom corners of the connecting beam, and the hook head groups are arranged at the top corners of the connecting beam.

The distance from the connecting end of the hook head group to the connecting end of the connecting beam to the connecting end of the 2 groups of pulley blocks to the connecting beam is the same.

The beneficial effects of the utility model are as follows: according to the utility model, the moment arm is changed so that the lifting hook can have a moment balance position, so that the lifting hook cannot swing back and forth without stopping when lifting and falling, the safety risk is reduced, and the integral safety and stability of the structure are ensured. By utilizing the moment balance principle, the hanging hook connecting beam realizes different moment arms under the condition of slight inclination, and can still realize the self-balancing state of the hanging hook under the condition that the stress of hanging hook pulley blocks at two ends is unequal.

Drawings

The utility model is further described below with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the present utility model.

In the figure: 1. pulley block; 2. a connecting beam; 3. a hook head group; 4. and a connecting pin shaft.

Description of the embodiments

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.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; 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, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A self-balancing hook structure as shown in fig. 1, wherein: including assembly pulley 1, tie-beam 2, gib head group 3 and connecting pin 4, assembly pulley 1, tie-beam 2 and gib head group 3 link together through connecting pin 4, assembly pulley 1 is equipped with 2 groups, and 2 group's assembly pulley 1 is established at the both ends of tie-beam 2, and gib head group 3 sets up in the bottom of tie-beam 2, and three connecting pin 4 between 2 group's assembly pulley 1 and gib head group 3 and the tie-beam 2 are not in a straight line.

The connecting beam 2 adopts an inverted isosceles triangle structure, 2 groups of pulley blocks 1 are arranged at the bottom corners of the connecting beam 2, and hook head groups 3 are arranged at the top corners of the connecting beam 2.

The distance from the connecting end of the hook head group 3 and the connecting beam 2 to the connecting end of the pulley block 1 and the connecting beam 2 is the same.

The connecting pin shaft 4 between the connecting beam 2 and the hook head group 3 and the two connecting pin shafts 4 between the pulley block 1 and the connecting beam 2 are not on the same straight line, when the connecting beam 2 is horizontal, the distance from the stress point of the hook head group 3 to the connecting pin shaft 4 points of the two pulley blocks 1 is the same, if the stress of the pulley blocks 1 at the two ends is unequal, the connecting beam 2 can slightly incline, so that the moment arms are different when the two distances are unequal, the moment balance can be met once, the lifting hook does not swing back and forth continuously, and the purpose of automatic balancing of the lifting hook is realized.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (3)

1. A hook structure capable of self-balancing, characterized in that: including assembly pulley (1), connecting beam (2), gib head group (3) and connecting pin (4), assembly pulley (1), connecting beam (2) and gib head group (3) are in the same place through connecting pin (4), and assembly pulley (1) are equipped with 2 groups, and 2 group's assembly pulley (1) are established at the both ends of connecting beam (2), and gib head group (3) set up in the bottom of connecting beam (2), and three connecting pin (4) between 2 group's assembly pulley (1) and gib head group (3) and connecting beam (2) are not in a straight line.

2. A self-balancing hook structure according to claim 1, wherein: the connecting beam (2) adopts an inverted isosceles triangle structure, 2 groups of pulley blocks (1) are arranged at the bottom corners of the connecting beam (2), and hook head groups (3) are arranged at the top corners of the connecting beam (2).

3. A self-balancing hook structure according to claim 1, wherein: the distance from the connecting end of the hook head group (3) to the connecting beam (2) to the connecting end of the pulley block (1) to the connecting beam (2) is the same.