CN216105740U - Anti-falling device for tower crane hook - Google Patents

Abstract

The utility model discloses a falling-preventing device for a tower crane hook, which relates to the field of tower cranes and comprises a buffer tank and a hook platform, wherein two groups of rotating columns are arranged in the lower layer of the buffer tank, a fixed platform is fixedly connected above the rotating columns, a ratchet tongue rotating shaft and a ratchet tongue rotating by taking the ratchet tongue rotating shaft as a shaft are arranged on the fixed platform, the bottom of the lower layer of the buffer tank is movably connected with a guide cap, the top end of the guide cap is provided with an auxiliary buffer spring, the top of the inner wall of the lower layer of the buffer tank is provided with a main buffer spring, two vertically upward punching columns are fixedly connected on the hook platform, and the top ends of the punching columns are provided with punching column caps. The utility model is provided with two stages of buffer springs and a guide mechanism, the lifting hook platform can be accurately flushed into the arranged buffer mechanism when swinging and rising, the ratchet tongue mechanism is arranged, and the lifting hook platform can be limited after a flushing column cap on the lifting hook platform is flushed into the buffer mechanism, so that the economic loss and the risk of personal injury caused by the falling of the lifting hook platform after the steel wire rope is broken are prevented.

Description

Anti-falling device for tower crane hook

Technical Field

The utility model relates to the field of tower cranes, in particular to a falling-proof device for a tower crane hook.

Background

The crane all is equipped with high stopper when dispatching from the factory, prevents that the improper lifting hook from dashing to push up and makes to rise that wire rope breaks and lead to lifting hook and heavy object to fall, causes the incident, but when high stopper became invalid, this kind of accident still can not avoid, and the lifting hook dashes to push up under the general condition, is empty hook or lifts by crane the goods and is lighter small, and takes place easily under the condition that rises fast.

The buffering component of the existing anti-falling device for the tower crane hook is too simple, collision deviation easily occurs at the moment of impact of the hook, the buffering effect is not ideal, the hook cannot be well limited after being buffered, and the phenomenon that the buffering is not in place due to the breakage of the steel wire rope is avoided.

Disclosure of Invention

Based on the above, the utility model aims to provide a tower crane hook anti-falling device, which solves the technical problems that the existing tower crane hook anti-falling device is too simple in buffer assembly, collision deviation is easy to occur at the moment of hook impact, the buffer effect is not ideal, the hook cannot be well limited after being buffered, and the hook is prevented from falling due to the breakage of a steel wire rope due to the insufficient buffer.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a tower crane lifting hook anti-falling device, includes baffle-box and lifting hook platform, the inside of baffle-box lower floor is provided with two sets of rotary columns, the bottom fixed connection of rotary column is in the bottom of baffle-box inner arm, the lower part of rotary column is provided with the pivot, the rotary column is at pivot top fixedly connected with fixed station, be provided with the ratchet pivot on the fixed station and use the ratchet pivot as axle pivoted ratchet, the bottom swing joint of baffle-box lower floor has the guide cap, be provided with vice buffer spring on the top of guide cap towards the direction of fixed station, the top of baffle-box lower floor inner wall is provided with main buffer spring, two vertical ascending impact posts of fixedly connected with on the lifting hook platform, the top of impact post is provided with the impact post cap.

Through adopting above-mentioned technical scheme, set up two-stage buffer spring and guiding mechanism, can be accurate make during its dashes into the buffer gear who sets up when lifting hook platform rocks and rises, make the spring among the buffer gear can exert the biggest buffering efficiency, set up the latch mechanism, after the impact column cap on the lifting hook bench dashes into buffer gear, can carry on spacingly to the lifting hook platform, lifting hook platform whereabouts produces economic loss and personnel's injured risk after preventing the wire rope fracture circumstances.

The utility model is further arranged in that the bottom end of the main buffer spring is fixedly connected with a rubber buffer head, and the bottom surface of the fixed platform and the top surface of the guide cap are both provided with protective grooves.

Through adopting above-mentioned technical scheme, rubber buffer head plays antiskid and energy-absorbing effect, and the guard slot can prevent that vice buffer spring atress from walking to incline and leading to the buffering effect unsatisfactory.

The utility model is further arranged in such a way that two groups of rotating columns penetrate through the inner wall of the buffer box to the upper layer of the buffer box and are connected with driven gears which are mutually meshed, a driving gear is meshed between the two groups of driven gears, and a transmission shaft of the driving gear extends to the outside of the buffer box and is connected with a motor.

By adopting the technical scheme, the ratchet tongue on the fixed platform can move away from the limit position of the hedging column cap through the rotation of the motor, so that the hook lifting platform can move downwards.

The utility model is further provided that the buffer box is connected with the hook platform through a steel wire rope, and the hook platform is connected with the hook through the steel wire rope.

By adopting the technical scheme, the lifting hook and the lifting hook platform can be connected through the steel wire rope, and the lifting of the lifting hook platform is controlled.

In summary, the utility model mainly has the following beneficial effects:

1. according to the utility model, by arranging the two-stage buffer spring and the guide mechanism, when the lifting hook platform swings and rises, the lifting hook platform can be accurately flushed into the arranged buffer mechanism, so that the spring in the buffer mechanism can exert the maximum buffer efficiency;

2. according to the utility model, the latch mechanism is arranged, so that after the column punching cap on the lifting hook platform is punched into the buffer mechanism, the lifting hook platform can be limited, and the economic loss and the personnel injury risk caused by the falling of the lifting hook platform after the steel wire rope is broken are prevented.

Drawings

FIG. 1 is a front interior view of the present invention;

FIG. 2 is an enlarged structural view of A in FIG. 1 according to the present invention;

FIG. 3 is a top plan view of the upper layer of the buffer tank of the present invention;

FIG. 4 is a top plan view of the lower deck of the surge tank of the present invention.

In the figure: 1. a buffer tank; 2. a hook platform; 3. a hook; 4. punching the column; 5. punching a column cap; 6. a guide cap; 7. a driven gear; 8. a driving gear; 9. a motor; 10. a wire rope; 11. a main buffer spring; 12. a rubber cushion head; 13. turning the column; 14. a rotating shaft; 15. a fixed table; 16. a ratchet tongue rotating shaft; 17. a spinal tongue; 18. a protective bath; 19. and an auxiliary buffer spring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following describes an embodiment of the present invention based on its overall structure.

A falling-preventing device for a tower crane hook is shown in figures 1-4 and comprises a buffer box 1 and a hook platform 2, wherein two groups of rotating columns 13 are arranged in the lower layer of the buffer box 1, each group of four rotating columns 13 is provided, the bottom ends of the rotating columns 13 are fixedly connected with the bottom end of the inner arm of the buffer box 1, the lower part of each rotating column 13 is provided with a rotating shaft 14, the rotating columns 13 are fixedly connected with a fixed platform 15 above the rotating shaft 14, a latch rotating shaft 16 and a latch 17 rotating around the latch rotating shaft 16 are arranged on the fixed platform 15, the bottom of the lower layer of the buffer box 1 is movably connected with a guide cap 6, the guide cap 6 can slide up and down on the bottom of the buffer box 1, the top end of the guide cap 6 faces the direction of the fixed platform 15 and is provided with an auxiliary buffer spring 19, the top of the inner wall of the lower layer of the buffer box 1 is provided with a main buffer spring 11, the hook platform 2 is fixedly connected with two vertically upward punching columns 4, the top ends of the punching columns 4 are provided with a punching column cap 5, the column punching cap 5 is of an inverted trapezoidal structure with a groove.

Referring to fig. 1 and 2, a rubber buffer head 12 is fixedly connected to the bottom end of the main buffer spring 11, a protective groove 18 is disposed on both the bottom surface of the fixed platform 15 and the top surface of the guide cap 6, the rubber buffer head 12 plays a role of anti-skid and energy absorption, and the protective groove 18 can prevent the auxiliary buffer spring 19 from being forced to deviate, which results in an undesirable buffering effect.

Referring to fig. 1 and 3, two sets of rotation columns 13 pass through the inner wall of the buffer box 1 to the upper layer of the buffer box 1 and are connected with the driven gears 7 which are meshed with each other, a driving gear 8 is meshed between the two sets of driven gears 7, a transmission shaft of the driving gear 8 extends to the outside of the buffer box 1 and is connected with a motor 9, and by rotation of the motor 9, a latch 17 on a fixed table 15 can move away from a limit position of the opposite plunger cap 5, so that the hook table 2 can move downwards.

Referring to fig. 1, a buffer box 1 is connected to a hook platform 2 through a steel wire rope 10, the hook platform 2 is connected to a hook 3 through the steel wire rope 10, the hook 3 and the hook platform 2 can be connected through the steel wire rope 10, and the lifting of the hook platform 2 is controlled.

The working principle of the utility model is as follows: the steel wire rope 10 pulls the hook platform 2 to move upwards, when the height limiter fails, the hook platform 2 continues to ascend, the post punching cap 5 at the top end of the post punching 4 is guided by the guide cap 6 in the inverted cone shape and is accurately and vertically inserted into the buffer box 1, when the hook platform 2 continues to move upwards, the post punching cap 5 punches the latch 17, the latch 17 rotates by the latch rotating shaft 16, the post punching 4 continues to move upwards, the post punching cap 5 contacts the rubber buffer head 12, the rubber buffer head 12 plays a role in skid resistance and energy absorption, at the moment, the main buffer spring 11 begins to be compressed and absorb energy, when the hook platform 2 continues to move upwards, the guide cap 6 contacts the hook platform 2 to move upwards, two sets of auxiliary buffer springs 19 are compressed to absorb energy for buffering and energy for the hook platform 2, if the hook platform 2 continues to move upwards to break the steel wire rope 10, the hook platform 2 falls under self gravity, and is limited by the latch 17 until the inverted trapezoidal post punching cap 5 with a groove, the lifting hook platform 2 cannot fall down and is connected with the buffer box 1, when the lifting hook platform 2 moves upwards, if a steel wire rope 10 is not broken, a driver is powered off in time, the lifting hook platform 2 moves downwards under the elastic force of a spring and is limited by the ratchet tongue 17, when the lifting hook platform 2 needs to be put down, the lifting hook platform 2 is firstly inching to lift the lifting hook platform 2 slightly, then the motor 9 is started, the driving gear 8 drives the driven gear 7 to rotate, the driven gear 7 rotates to enable the rotary column 13 to rotate through the rotating shaft 14, the ratchet tongue 17 on the fixed platform 15 fixedly connected with the rotary column 13 rotates along with the rotary shaft to leave the limiting position of the opposite impact column cap 5, at the moment, the limiting position of the lifting hook platform 2 is released, the downward movement can be achieved, and after the lifting hook platform 2 leaves, the motor 9 rotates reversely by the same amount, and the ratchet tongue 17 is reset.

Although embodiments of the present invention have been shown and described, the present embodiments are merely illustrative of the present invention and are not intended to limit the present invention, and the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and those skilled in the art can make modifications, substitutions, variations, etc. of the embodiments as required without departing from the principle and spirit of the present invention, but within the scope of the claims of the present invention.

Claims (4)

1. The utility model provides a tower crane lifting hook anti-falling device, includes surge-box (1) and lifting hook platform (2), its characterized in that: two groups of rotating columns (13) are arranged in the lower layer of the buffer box (1), the bottom ends of the rotating columns (13) are fixedly connected with the bottom end of the inner arm of the buffer box (1), a rotating shaft (14) is arranged at the lower part of the rotating column (13), a fixed platform (15) is fixedly connected above the rotating shaft (14) of the rotating column (13), the fixed platform (15) is provided with a ratchet tongue rotating shaft (16) and a ratchet tongue (17) which rotates by taking the ratchet tongue rotating shaft (16) as a shaft, the bottom of the lower layer of the buffer box (1) is movably connected with a guide cap (6), an auxiliary buffer spring (19) is arranged on the top end of the guide cap (6) in the direction towards the fixed table (15), the top of the lower inner wall of the buffer box (1) is provided with a main buffer spring (11), the lifting hook platform (2) is fixedly connected with two vertically upward punching columns (4), and the top ends of the punching columns (4) are provided with punching column caps (5).

2. The anti-falling device for the tower crane hook as claimed in claim 1, wherein: the bottom end of the main buffer spring (11) is fixedly connected with a rubber buffer head (12), and the bottom surface of the fixed table (15) and the top surface of the guide cap (6) are provided with protective grooves (18).

3. The anti-falling device for the tower crane hook as claimed in claim 1, wherein: two sets of rotary columns (13) pass the inner wall of baffle-box (1) to the upper strata of baffle-box (1) and are connected with intermeshing's driven gear (7), and are two sets of the meshing has driving gear (8) between driven gear (7), the transmission shaft of driving gear (8) extends to baffle-box (1) external connection and has motor (9).

4. The anti-falling device for the tower crane hook as claimed in claim 1, wherein: the buffer box (1) is connected with the lifting hook platform (2) through a steel wire rope (10), and the lifting hook platform (2) is connected with the lifting hook (3) through the steel wire rope (10).

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