CN214828378U - Safety hook for tower crane - Google Patents

Abstract

The utility model discloses a safe type lifting hook for tower crane, including connecting the lifting hook, connect lifting hook top position fixedly connected with fixed connection piece, connect lifting hook dorsal part position and set up the rotation slide opening that runs through the setting, it is provided with the screw sleeve to rotate slide opening middle part, the axis of rotation that two symmetries of screw sleeve outer wall middle part fixedly connected with set up, two the axis of rotation runs through with the lateral wall that rotates slide opening position and rotates and rotate and is connected, two an arbitrary axis of rotation of axis of rotation is located the outer one end position of connection lifting hook and is provided with tensile regulating block, it has seted up the spout to connect the lifting hook to be located tensile regulating block position, tensile regulating block outer wall and spout inner wall position sliding connection. The utility model discloses make still hang goods and goods tray on tower crane when the steel wire fracture when the allocation and transportation goods, avoid the goods to fall and lead to the incident for the goods lifts by crane safelyr.

Description

Safety hook for tower crane

Technical Field

The utility model relates to a hoist technical field especially relates to a safe type lifting hook for tower crane.

Background

The tower crane is the most common hoisting equipment on the construction site, also called tower crane, and is used for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like for construction by the extension (height) of one section and one section (called standard section for short). The tower crane is an indispensable device on a construction site. The tower crane tip has the function of bearing the upper load transmitted by the boom pull rope and the balance arm pull rope, and directly transmits the upper load to the tower body structure through the rotary tower, the rotary table, the bearing seat and other structural components. The self-elevating tower top is provided with a truncated cone column type, a forward-inclined or backward-inclined truncated cone column type, a herringbone frame type and an inclined support frame type. The upper slewing tower crane is required to be provided with a balance weight, and the function of the upper slewing tower crane is to support the balance weight so as to form a balance moment which is required by design and has the action direction opposite to the lifting moment direction. In addition to the counterweight, a hoisting mechanism is often provided at the tail. The hoisting mechanism and the balance weight are arranged at the tail end of the balance arm together, so that partial balance weight function can be achieved, and the distance between the rope reel and the tower tip guide wheel is increased, so that the steel wire rope can be conveniently wound and rope disorder is avoided. The dosage of the balance weight is in inverse proportion to the length of the balance arm, and the length of the balance arm is in proportion to the length of the crane boom. The balance weight is considerable, the light tower crane generally needs 3-4 t at least, and the heavy tower crane needs 30t nearly.

In the prior art, when the crane lifts the goods and the pallets thereof, the overweight of the goods can cause the breakage of steel wires connecting the goods pallets, thereby causing potential safety hazards,

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a safe lifting hook for a tower crane.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a safety type lifting hook for a tower crane comprises a connecting lifting hook, wherein a fixed connecting block is fixedly connected with the top of the connecting lifting hook, a through rotating sliding hole is formed in the back side position of the connecting lifting hook, a threaded sleeve is arranged in the middle of the rotating sliding hole, two rotating shafts which are symmetrically arranged are fixedly connected with the middle of the outer wall of the threaded sleeve, the two rotating shafts are in through rotating connection with the side wall of the rotating sliding hole, a stretching adjusting block is arranged at one end of any one of the two rotating shafts, which is positioned outside the connecting lifting hook, a sliding groove is formed in the position of the connecting lifting hook, the outer wall of the stretching adjusting block is in sliding connection with the inner wall of the sliding groove, a fixed cavity is formed in the center of the stretching adjusting block, which is close to one side of the connecting lifting hook, two symmetrically arranged limiting inserting rods are fixedly connected with the inner wall, the spout is kept away from tensile regulating block one side and is seted up the chamber that resets that two symmetries set up, two fixedly connected with compression spring between chamber and the tensile regulating block lateral wall resets.

As a further description of the above technical solution:

two the axis of rotation that the axis of rotation is close to tensile regulating block one side is close to tensile regulating block one end and sets up the fixed jack that a plurality of evenly distributed rings set up, and is a plurality of the diameter of fixed jack is unanimous with the diameter of spacing inserted bar, and is a plurality of fixed jack and spacing inserted bar sliding connection.

As a further description of the above technical solution:

threaded sleeve inner wall position runs through threaded connection and has the threaded rod, the threaded rod is close to the inboard one end of connecting the lifting hook and rotates and be connected with and support tight fixed block, the threaded rod is kept away from and is supported tight fixed block one end fixedly connected with regulating block, and the regulating block is the hexagon setting.

As a further description of the above technical solution:

the connecting lifting hook is characterized in that a fixing groove is formed in the hook position of the connecting lifting hook, and a steel cable is arranged at the position, located in the fixing groove, of the connecting lifting hook.

As a further description of the above technical solution:

the stretching adjusting block is arranged in a rectangular shape.

As a further description of the above technical solution:

the compression spring is a tension spring.

The utility model discloses following beneficial effect has:

the utility model discloses a set up and support tight fixed block, through pulling out tensile regulating block from the spout, make spacing inserted bar and fixed jack separation, can rotate the threaded sleeve, make the threaded sleeve drive and support tight fixed block and rotate, make to support tight fixed block just to the cable wire, loosen tensile regulating block, make in the tensile regulating block withdrawal spout, make in spacing inserted bar inserts fixed jack, avoid the threaded sleeve to appear rotating, the regulating block through spanner rotation threaded rod position, make to support tight fixed block and support tight cable wire, the middle part position of cable wire is supported tight fixed block throughout and is compressed tightly when just taking place arbitrary one side cable wire fracture, avoid the heavy object to fall and lead to the incident, tower crane's safety in utilization has been guaranteed effectively.

Drawings

Fig. 1 is a front view of a safety hook for a tower crane according to the present invention;

fig. 2 is a sectional view of a safety hook for a tower crane according to the present invention;

fig. 3 is a side view of a safety hook for a tower crane according to the present invention;

fig. 4 is an enlarged view of a portion a in fig. 3.

Illustration of the drawings:

1. connecting a lifting hook; 2. tightly abutting against the fixed block; 3. a steel cord; 4. stretching the adjusting block; 5. a threaded sleeve; 6. a threaded rod; 7. fixing a connecting block; 8. fixing the groove; 9. rotating the slide hole; 10. a rotating shaft; 11. a reset chamber; 12. a compression spring; 13. a fixed cavity; 14. a limiting inserted rod; 15. fixing the jack; 16. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, the present invention provides an embodiment: a safety type lifting hook for a tower crane comprises a connecting lifting hook 1, the top of the connecting lifting hook 1 is fixedly connected with a fixed connecting block 7, the back side position of the connecting lifting hook 1 is provided with a through rotating slide hole 9, the middle part of the rotating slide hole 9 is provided with a threaded sleeve 5, the middle part position of the outer wall of the threaded sleeve 5 is fixedly connected with two symmetrical rotating shafts 10, the two rotating shafts 10 are in through rotating connection with the side wall of the rotating slide hole 9, any one rotating shaft 10 of the two rotating shafts 10 is provided with a stretching adjusting block 4 at the position of one end outside the connecting lifting hook 1, the connecting lifting hook 1 is provided with a sliding chute 16 at the position of the stretching adjusting block 4, the outer wall of the stretching adjusting block 4 is in sliding connection with the inner wall of the sliding chute 16, the center position of the stretching adjusting block 4 close to one side of the connecting lifting hook 1 is provided with a fixed cavity 13, the inner wall position is fixedly connected with two symmetrical limiting inserted rods 14, two reset cavities 11 which are symmetrically arranged are formed in one side, away from the stretching adjusting block 4, of the sliding groove 16, and compression springs 12 are fixedly connected between the two reset cavities 11 and the side wall of the stretching adjusting block 4.

Two axis of rotation 10 are close to the axis of rotation 10 of tensile regulating block 4 one side and are close to tensile regulating block 4 one end and offer the fixed jack 15 of a plurality of evenly distributed annular settings, and the diameter of a plurality of fixed jacks 15 is unanimous with spacing inserted bar 14's diameter, a plurality of fixed jacks 15 and spacing inserted bar 14 sliding connection. Threaded sleeve 5 inner wall position runs through threaded connection and has threaded rod 6, and threaded rod 6 is close to 1 inboard one end of connecting lifting hook and rotates to be connected with and supports tight fixed block 2, and threaded rod 6 is kept away from and is supported tight fixed block 2 one end fixedly connected with regulating block, and the regulating block is the hexagon setting. The hook position of the connecting lifting hook 1 is provided with a fixing groove 8, and the position of the connecting lifting hook 1, which is positioned in the fixing groove 8, is provided with a steel cable 3. The stretching adjusting block 4 is arranged in a rectangular shape. The compression spring 12 is a tension spring.

The working principle is as follows: through pulling out tensile regulating block 4 from spout interior 16, make spacing inserted bar 14 and fixed jack 15 separation, can rotate threaded sleeve 5, make threaded sleeve 5 drive to support tight fixed block 2 and rotate, make to support tight fixed block 2 and just to cable wire 3, loosen tensile regulating block 4, make tensile regulating block 4 retract in spout 16, make spacing inserted bar 14 insert in fixed jack 15, avoid threaded sleeve 5 to appear rotating, rotate the regulating block of threaded rod 6 position through the spanner, make to support tight fixed block 2 and support tight cable wire 3, the middle part position of cable wire 3 is supported tight fixed block 2 throughout and is compressed tightly when just taking place arbitrary one side cable wire 3 fracture, avoid the heavy object to fall and lead to the incident, tower crane's safety in utilization has been guaranteed effectively, and the heavy object that is hoisted needs fully to tie up with the goods tray tightly.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. The utility model provides a safe type lifting hook for tower crane, is including connecting lifting hook (1), its characterized in that: the top position of the connecting lifting hook (1) is fixedly connected with a fixed connecting block (7), the back position of the connecting lifting hook (1) is provided with a through rotating slide hole (9), the middle part of the rotating slide hole (9) is provided with a threaded sleeve (5), the middle position of the outer wall of the threaded sleeve (5) is fixedly connected with two symmetrical rotating shafts (10), the two rotating shafts (10) are in through rotating connection with the side wall of the rotating slide hole (9), one arbitrary rotating shaft (10) of the two rotating shafts (10) is arranged at the outer end position of the connecting lifting hook (1) and is provided with a stretching adjusting block (4), the connecting lifting hook (1) is arranged at the stretching adjusting block (4) and is provided with a sliding groove (16), the outer wall of the stretching adjusting block (4) is in sliding connection with the inner wall position of the sliding groove (16), the stretching adjusting block (4) is arranged at the central position close to one side of the connecting lifting hook (1) and is provided with a fixed cavity (13), the inner wall position fixedly connected with two symmetrical limiting inserted rods (14) are arranged, the sliding groove (16) is far away from one side of the stretching adjusting block (4) and is provided with two symmetrical resetting cavities (11) and two compression springs (12) fixedly connected between the resetting cavities (11) and the side wall of the stretching adjusting block (4).

2. The safety hook for the tower crane according to claim 1, wherein: two axis of rotation (10) are close to fixed jack (15) that a plurality of evenly distributed rings set up, a plurality of are offered near tensile regulating block (4) one end to axis of rotation (10) that tensile regulating block (4) one side fixed jack (15) the diameter of fixed jack (15) is unanimous with the diameter of spacing inserted bar (14), and is a plurality of fixed jack (15) and spacing inserted bar (14) sliding connection.

3. The safety hook for the tower crane according to claim 1, wherein: threaded sleeve (5) inner wall position runs through threaded connection and has threaded rod (6), threaded rod (6) are close to connecting lifting hook (1) inboard one end and rotate and be connected with and support tight fixed block (2), threaded rod (6) are kept away from and are supported tight fixed block (2) one end fixedly connected with regulating block, and the regulating block is the hexagon setting.

4. The safety hook for the tower crane according to claim 1, wherein: the connecting lifting hook is characterized in that a fixing groove (8) is formed in the hook position of the connecting lifting hook (1), and a steel cable (3) is arranged at the position, located in the fixing groove (8), of the connecting lifting hook (1).

5. The safety hook for the tower crane according to claim 1, wherein: the stretching adjusting block (4) is arranged in a rectangular shape.

6. The safety hook for the tower crane according to claim 1, wherein: the compression spring (12) is a tension spring.

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