CN213294498U

CN213294498U - Rotation limiting device for tower crane

Info

Publication number: CN213294498U
Application number: CN202021043208.9U
Authority: CN
Inventors: 张士明; 程宝来; 查荣德
Original assignee: Chizhou Huaxing Hoisting Equipment Installation Co ltd
Current assignee: Chizhou Huaxing Hoisting Equipment Installation Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-05-28
Anticipated expiration: 2030-06-09

Abstract

The utility model discloses a rotatory stop device for tower crane, including the crane support body, other fixed mounting is equallyd divide at the upper and lower both ends of crane support body rotation position department and is equipped with braced frame, braced frame's inner chamber intermediate position department fixed mounting is equipped with the location guide, the both sides open end of location guide is equipped with the sliding block respectively the erection joint, the shutoff piece, be connected through buffer spring one conflict between sliding block and the shutoff piece, the one end of a body structure joint support pole on the sliding block, the bracing piece runs through to be inserted in the jack of sliding of seting up on the braced frame lateral wall, the bracing piece is kept away from the spacing piece of support of one end fixed connection of sliding block, the cover is established and is installed buffer spring two on the bracing piece, buffer spring two's both ends respectively with spacing piece, inconsistent setting between. By adopting the technical scheme, the novel hydraulic buffer has the advantages of simple structure, convenience in assembly and installation, higher stability in reducing impact, and stability and reliability in operation.

Description

Rotation limiting device for tower crane

Technical Field

The utility model relates to a tower crane's technical field especially relates to a rotatory stop device for tower crane.

Background

The tower crane has a rotation limiting device during construction operation, and the limiting device has no use function when the tower crane stops operation (power is turned off). According to the standard of the tower crane, when the tower crane is not used, the tower crane can freely rotate along with the wind direction, and at the moment, the tower crane needs to stop rotating at a certain position due to the influence of operating conditions and environment, so that the damage to the tower crane is avoided, and the equipment is stable and safe.

SUMMERY OF THE UTILITY MODEL

For solving the defect of prior art scheme, the utility model discloses a rotatory stop device for tower crane.

The utility model discloses a rotation limiting device for a tower crane, which comprises a crane frame body and a supporting frame, wherein the upper end and the lower end of the rotating part of the crane frame body are respectively fixedly provided with the supporting frame, the middle position of the inner cavity of the supporting frame is fixedly provided with a positioning guide cylinder, the open ends at the two sides of the positioning guide cylinder are respectively provided with a sliding block and a plugging block in an assembling way, the sliding block and the plugging block are in contact connection through a buffer spring, the sliding block is integrally connected with one end of a supporting rod, the supporting rod is inserted in a sliding insertion hole arranged on the side wall of the supporting frame in a penetrating way, one end of the supporting rod far away from the sliding block is fixedly connected with a limiting and abutting block, a buffer spring II is sleeved on the supporting rod, the two ends of the buffer spring II are respectively in contact with the limiting and abutting block and the supporting frame, the upper side and the lower side of the supporting rod are symmetrically provided with an inclined stabilizer bar, two ends of the inclined stabilizer bar are respectively connected with the limiting abutting block and the sliding block in an integrated rotating mode, the sliding block is installed on the guide rail in a sliding assembly mode, and the guide rail is fixedly installed on the outer wall of the supporting frame.

Preferably, the tail end of the supporting rod is provided with a threaded end in a tapping mode, and the threaded end is fixedly connected with a nut.

Preferably, the nut is fastened, assembled and arranged in a groove formed in the limiting abutting block.

Preferably, two ends of the inclined stabilizer bar are respectively and rotatably connected with a first lug rotating end and a second lug rotating end.

Preferably, the first rotary lug end and the second rotary lug end are respectively and integrally arranged on the side walls of the limiting abutting block and the sliding block.

Preferably, the upper end and the lower end of the outer wall of the supporting frame are respectively and fixedly provided with an L-shaped limiting baffle.

The beneficial effects are that:

1. its simple structure, assembly simple to operate, through the buffer spring one that sets up of contradicting between sliding block and the shutoff piece, spacing buffer spring two that supports and contradict between piece and the braced frame and set up, buffer spring one directly supports the piece to spacing and slows down spacing rotatory impact, buffer spring two strengthen the impact in-process spacing support piece, bracing piece, sliding block and slow down the conflict to the rear side, can avoid the impact damage spacing support the piece, it is higher to slow down impact stability.

2. In addition, the two sides of the limiting abutting block are rotated to be connected with the inclined stabilizer bar, the inclined stabilizer bar can push the sliding block to slide upwards stably along the guide rail in the impact process, the effect of stable impact is further enhanced, and the operation is stable and reliable.

Drawings

Fig. 1 is a schematic structural view of a rotation limiting device for a tower crane according to the present invention;

fig. 2 is an assembly cross-sectional view of the rotation limiting device for a tower crane according to the present invention.

Wherein: 1-crane frame body; 2-supporting frame, 20-sliding insertion hole; 3, positioning a guide cylinder; 4-a sliding block; 5-plugging block; 6-a first buffer spring; 7-support bar, 70-screw thread end; 8-limiting abutting blocks and 80-grooves; 9-a second buffer spring; 10-a tilt stabilizer bar; 11-rotating the lug end I; 12-turning a lug end II; 13-a slide block; 14-a guide rail; 15-L-shaped limit baffle; 16-nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-2, the utility model discloses a rotatory stop device for tower crane, including crane frame body 1, braced frame 2, other fixed mounting is equallyd divide at the upper and lower both ends of 1 rotatory position department of crane frame body and is equipped with braced frame 2, braced frame 2's inner chamber intermediate position department fixed mounting is equipped with location guide 3, the both sides open end of location guide 3 is equipped with sliding block 4, shutoff piece 5 respectively the erection joint, be connected through a 6 clashes of buffer spring between sliding block 4 and the shutoff piece 5.

The upper integrated structure of the sliding block 4 is connected with one end of a supporting rod 7, the supporting rod 7 is inserted into a sliding jack 20 formed in the side wall of the supporting frame 2 in a penetrating mode, one end of the supporting rod 7, far away from the sliding block 4, is fixedly connected with a limiting abutting block 8, a second buffer spring 9 is sleeved on the supporting rod 7, two ends of the second buffer spring 9 are respectively abutted to the limiting abutting block 8 and the supporting frame 2, inclined stabilizing rods 10 are symmetrically arranged on the upper side and the lower side of the supporting rod 7, two ends of each inclined stabilizing rod 10 are respectively connected with the limiting abutting block 8 and a sliding block 13 in an integrated rotating mode, the sliding block 13 is arranged on a guide rail 14 in a sliding assembly mode, and the guide rail 14 is fixedly arranged on the outer wall of the supporting frame 2.

The tail end of the supporting rod 7 is provided with a threaded end 70 in a tapping mode, the threaded end 70 is fixedly connected with a nut 16, and the nut 16 is fastened, assembled and arranged in a groove 80 formed in the limiting abutting block 8, so that the supporting rod 7 and the limiting abutting block 8 are integrally assembled and installed conveniently, and the assembling connection is stable and reliable.

The two ends of the inclined stabilizer bar 10 are respectively connected with a first rotary lug end 11 and a second rotary lug end 12 in a rotating mode, the first rotary lug end 11 and the second rotary lug end 12 are respectively arranged on the side walls of the limiting abutting block 8 and the sliding block 13 in an integrated structure mode, and the inclined stabilizer bar 10 is used for stabilizing the buffering limiting rotation effect of the limiting abutting block 8.

And the upper end and the lower end of the outer wall of the supporting frame 2 are respectively and fixedly provided with an L-shaped limiting baffle 15, and the arranged L-shaped limiting baffle 15 is used for limiting the sliding position of the sliding block 13 along the terminal point of the guide rail 14.

The utility model is implemented as follows: when in use, the limiting rotary impact is carried out through the limiting abutting block 8, the received impact force is reduced under the action of the collision of the buffer spring II 9, the limiting abutting block 8 is prevented from being damaged by the impact, the supporting rod 7 is enabled to slide towards the outer side in a buffering mode in the process of impacting the limiting abutting block 8, the supporting rod 7 and the sliding block 4 which is arranged in an integrated structure slide towards the rear side along the inner cavity of the positioning guide cylinder 3, the sliding block 4 is in contact connection with the plugging block 5 through the buffer spring I6, the effect of stabilizing the impact sliding on the supporting rod 7 is enhanced under the action of the reduction of the collision of the buffer spring I6, in addition, the two sides of the limiting abutting block 8 are rotatably provided with inclined stabilizer bars 10, the other ends of the inclined stabilizer bars 10 are rotatably connected with the sliding block 13, the sliding block 13 is assembled with the guide rail 14 in a sliding mode, so that the inclined stabilizer bars 10 can push the sliding block 13 to stably slide, play the stable effect of impact, realize stabilizing spacing rotatory. By adopting the technical scheme, the structure is simple, the assembly and the installation are convenient, the first buffer spring is arranged between the sliding block and the plugging block in a butting mode, the second buffer spring is arranged between the limiting abutting block and the supporting frame in a butting mode, the first buffer spring directly slows down the limiting rotary impact on the limiting abutting block, and the limiting abutting block, the supporting rod and the sliding block are slowed down and abutted towards the rear side in the process of strengthening impact by the second buffer spring, so that the limiting abutting block can be prevented from being damaged by impact, and the stability of slowing down impact is high; in addition, the two sides of the limiting abutting block are rotated to be connected with the inclined stabilizer bar, the inclined stabilizer bar can push the sliding block to slide upwards stably along the guide rail in the impact process, the effect of stable impact is further enhanced, and the operation is stable and reliable.

Finally, it should be noted that: the above embodiments are only used for illustrating the present invention and do not limit the technical solution described in the present invention; thus, while the present invention has been described in detail with reference to the various embodiments thereof, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and within the scope and spirit of the following claims.

Claims

1. A rotation limiting device for a tower crane comprises a crane frame body (1) and a supporting frame (2), and is characterized in that the upper end and the lower end of the rotating position of the crane frame body (1) are respectively and fixedly installed with the supporting frame (2), the middle position of an inner cavity of the supporting frame (2) is fixedly installed with a positioning guide cylinder (3), the open ends of the two sides of the positioning guide cylinder (3) are respectively provided with a sliding block (4) and a plugging block (5) in an assembling and installing manner, the sliding block (4) and the plugging block (5) are in contact connection through a buffer spring I (6), the sliding block (4) is connected with one end of a supporting rod (7) in an integral structure, the supporting rod (7) is inserted into a sliding jack (20) formed in the side wall of the supporting frame (2), the supporting rod (7) is far away from one end of the sliding block (4) and is fixedly connected with a limiting supporting block (8), the utility model discloses a supporting rod, including bracing piece (7), bracing piece, supporting frame, the both ends of two (9) buffer springs are established and are installed two (9), the both ends of two (9) buffer springs respectively with spacing support between piece (8), braced frame (2) inconsistent setting, the upper and lower both sides of bracing piece (7) are symmetrical to be equipped with slope stabilizer bar (10), the both ends of slope stabilizer bar (10) respectively with spacing support between piece (8), slider (13) mutually an organic whole rotate to be connected, slider (13) sliding assembly installation sets up on guide rail (14), guide rail (14) fixed mounting sets up on braced frame's (2) outer wall.

2. A rotation limiting device for a tower crane according to claim 1, wherein: the tail end of the supporting rod (7) is provided with a threaded end (70) in a tapping mode, and a nut (16) is fixedly connected to the threaded end (70).

3. A rotation limiting device for a tower crane according to claim 2, wherein: the nut (16) is tightly assembled and arranged in a groove (80) formed in the limiting abutting block (8).

4. A rotation limiting device for a tower crane according to claim 1, wherein: two ends of the inclined stabilizer bar (10) are respectively and rotatably connected with a first rotary lug end (11) and a second rotary lug end (12).

5. A rotation limiting device for a tower crane according to claim 4, characterized in that: the first rotary lug end (11) and the second rotary lug end (12) are respectively and integrally arranged on the side walls of the limiting abutting block (8) and the sliding block (13).

6. A rotation limiting device for a tower crane according to claim 1, wherein: and the upper end and the lower end of the outer wall of the supporting frame (2) are respectively and fixedly provided with an L-shaped limiting baffle (15).