CN218950881U

CN218950881U - Tower crane pre-buried landing leg adjusting device

Info

Publication number: CN218950881U
Application number: CN202223472807.4U
Authority: CN
Inventors: 刘旭明; 杜斌; 陈建辉
Original assignee: Changde Jiacheng Minghui Machinery Manufacturing Co ltd
Current assignee: Changde Jiacheng Minghui Machinery Manufacturing Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-26
Publication date: 2023-05-02
Anticipated expiration: 2032-12-26

Abstract

The utility model discloses a tower crane embedded support leg adjusting device which comprises a bottom plate, wherein a fixed seat is fixedly connected to the top end of the bottom plate, a rotary table is rotationally connected to the fixed seat, a connecting column is fixedly connected to the top end of the rotary table, a nut is fixedly connected to the top end of the connecting column, a threaded column is fixedly connected to the top end of the nut, a sleeve is in threaded connection with the threaded column, a movable ball is movably connected to the top end of the sleeve, and a top plate is fixedly connected to the top end of the movable ball; the top end of the fixed seat is fixedly connected with a limiting rod, the top end of the limiting rod is fixedly connected with a limiting block, the bottom end of the sleeve is provided with a limiting hole, and the limiting rod is in sliding connection with the limiting hole; the bottom plate and the top plate are provided with mounting holes. The utility model avoids potential safety hazard caused by unstable connection between the adjusting device and the bracket, and ensures the safety of bracket installation and later-stage tower crane use.

Description

Tower crane pre-buried landing leg adjusting device

Technical Field

The utility model relates to the technical field of tower crane embedded support legs, in particular to a tower crane embedded support leg adjusting device.

Background

The tower crane is the most commonly used lifting equipment on the construction site, and is also called as a tower crane, and is used for hoisting construction raw materials such as steel bars, wood ridges, concrete, steel pipes and the like for construction. In the tower crane installation engineering, due to the dead weight of the pre-buried supporting legs of the tower crane and the influence of the construction site environment, the overall flatness of the pre-buried supporting legs of the tower crane is deviated after the completion, and the slight deviation brings great potential safety hazards to the installation of the tower crane and the use of the tower crane after the installation. For the problems, different plates are often customized according to actual conditions on a construction site, tower crane foundation sections are frequently installed and detached for leveling, and time and labor are wasted.

The patent 202220881607.5 discloses a "pre-buried landing leg adjusting device of tower crane", and this patent drives spiral blade and coil spring relative rotation mainly through rotatory spring adjusting sleeve to realize the interval adjustment between base and the top cap, whole simple to operate is swift, can effectively solve the uneven situation of pre-buried landing leg of tower crane.

However, the above device has the following problems: when the embedded supporting leg is inclined, the top cover is inclined after the adjusting base and the embedded supporting leg are fixed, so that the tower crane bracket is difficult to fix on the adjusting device, a good adjusting effect cannot be achieved, and certain potential safety hazards still exist when a tower crane foundation section is installed or a tower crane is used subsequently.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a tower crane embedded support leg adjusting device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a pre-buried landing leg adjusting device of tower crane, includes the bottom plate, bottom plate top fixedly connected with fixing base, the fixing base swivelling joint has the carousel, carousel top fixedly connected with spliced pole, spliced pole top fixedly connected with nut, nut top fixedly connected with screw thread post, screw thread post threaded connection has the sleeve, sleeve top swing joint has the movable ball, movable ball top fixedly connected with roof; the top end of the fixed seat is fixedly connected with a limiting rod, the top end of the limiting rod is fixedly connected with a limiting block, the bottom end of the sleeve is provided with a limiting hole, and the limiting rod is in sliding connection with the limiting hole; and the bottom plate and the top plate are provided with mounting holes.

Further, the inside annular cavity of having seted up of fixing base to the through-hole with annular cavity intercommunication has been seted up on the fixing base top, annular spout has all been seted up on the top and the bottom of annular cavity and the top and the bottom of carousel, sliding connection has the ball in the annular spout, the ball is equipped with a plurality ofly and evenly distributed in the annular spout.

Further, the sleeve bottom is offered the internal thread hole, screw thread post cooperatees with the internal thread hole.

Further, the limiting rods and the limiting holes are both arranged in two, the limiting rods limit the sleeve to prevent the sleeve from rotating, and the limiting blocks limit the sleeve to prevent the sleeve from falling off.

Further, the bottom plate, the top plate, the fixed seat, the connecting column, the nut, the threaded column, the sleeve and the turntable are all positioned on the same central axis.

Further, a spherical groove is formed in the top end of the sleeve, a friction pad is arranged in the spherical groove, and the friction pad is movably connected with the movable ball.

Further, the mounting holes are formed in a plurality of positions and are circumferentially distributed on the bottom plate and the top plate.

The utility model has the following beneficial effects:

compared with the prior art, this pre-buried landing leg adjusting device of tower crane makes roof and sleeve swing joint through setting up movable ball, when the bottom plate is fixed on the pre-buried landing leg of tower crane, the roof can not receive the influence of landing leg slope under the effect of movable ball to conveniently fix roof and tower crane support, afterwards reuse spanner rotation nut, under the cooperation of screw thread post and internal thread hole, the sleeve goes up and down along the screw thread post, thereby reaches the horizontally purpose of regulation support, avoided the potential safety hazard that adjusting device and leg joint were unstable to bring, guaranteed the safety that support mounting and later stage tower crane used.

Drawings

FIG. 1 is a schematic diagram of the overall mechanism of the present utility model;

FIG. 2 is a right side partial cross-sectional view of the present utility model;

FIG. 3 is an exploded view of a first view of the present utility model;

FIG. 4 is a second perspective exploded view of the present utility model;

fig. 5 is an enlarged schematic view of portion a of fig. 2 in accordance with the present utility model.

Legend description:

1. a bottom plate; 2. a top plate; 3. a fixing seat; 4. a connecting column; 5. a nut; 6. a threaded column; 7. a sleeve; 8. a limit rod; 9. a mounting hole; 10. an internal threaded hole; 11. a limiting hole; 12. a turntable; 13. an annular chute; 14. a movable ball; 15. a friction pad; 16. a ball; 17. an annular cavity.

Detailed Description

The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. 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.

Referring to fig. 1-5, a pre-buried landing leg adjusting device of a tower crane in this embodiment includes a bottom plate 1, a fixing seat 3 is fixedly connected to the top end of the bottom plate 1, a turntable 12 is rotationally connected to the fixing seat 3, a connecting column 4 is fixedly connected to the top end of the turntable 12, a nut 5 is fixedly connected to the top end of the connecting column 4, a threaded column 6 is fixedly connected to the top end of the nut 5, a sleeve 7 is in threaded connection with the threaded column 6, a movable ball 14 is movably connected to the top end of the sleeve 7, and a top plate 2 is fixedly connected to the top end of the movable ball 14; the top end of the fixed seat 3 is fixedly connected with a limiting rod 8, the top end of the limiting rod 8 is fixedly connected with a limiting block, the bottom end of the sleeve 7 is provided with a limiting hole 11, and the limiting rod 8 is in sliding connection with the limiting hole 11; the bottom plate 1 and the top plate 2 are provided with mounting holes 9. When the utility model is used, four adjusting devices are respectively fixed at four end points at the top end of the pre-buried supporting leg of the tower crane through the mounting holes 9 by bolts and matched nuts, under the action of the movable ball 14, the top plate 2 can be adjusted in direction, when the pre-buried supporting leg of the tower crane is inclined, the top plate 2 can be fixedly connected with the foundation section of the tower crane and then is attached to the bottom end of the foundation section of the tower crane, so that the condition that the foundation section of the tower crane is connected with the adjusting devices unstably is avoided, the threaded column 6 is rotated by rotating the nut 5 by a spanner, and the sleeve 7 in threaded connection with the threaded column 6 moves up and down along the limiting rod 8 under the cooperation of the limiting rod 8 and the limiting holes 11, so that the top plate 2 is driven to be lifted or lowered, the purpose of adjusting the foundation section of the tower crane into a horizontal state is achieved, and the safety hazards in the subsequent use of the foundation section and the tower crane are avoided, and the safety of building construction is ensured.

The inside annular cavity 17 of having seted up of fixing base 3 to the through-hole with annular cavity 17 intercommunication has been seted up on fixing base 3 top, annular spout 13 has all been seted up with the top and the bottom of carousel 12 to annular cavity 17's top and bottom, and annular spout 13 sliding connection has ball 16, and ball 16 is equipped with a plurality ofly and evenly distributed in annular spout 13. The annular chute 13 is circular and consists of two semicircular grooves which are respectively positioned on the fixed seat 3 and the rotary table 12 and correspond to each other, the rotary table 12 is rotationally connected with the fixed seat 3 through a plurality of uniformly distributed balls 16, the balls 16 can reduce friction between the rotary table 12 and the fixed seat 3, and the threaded column 6 is conveniently rotated to enable the sleeve 7 to lift, so that the purpose of leveling is achieved.

An internal threaded hole 10 is formed in the bottom end of the sleeve 7, and the threaded column 6 is matched with the internal threaded hole 10. The number of turns of the thread of the internal thread hole 10 is not less than one, so that the stressed contact surface of the sleeve 7 is increased, the smooth screwing of the thread column 6 and the sleeve 7 is ensured, and the overall stability is improved.

The two limiting rods 8 and the limiting holes 11 are respectively arranged, the two limiting rods 8 limit the sleeve 7 to prevent the sleeve 7 from rotating, and the limiting block limits the sleeve 7 to prevent the sleeve 7 from falling off. The position that two gag levers 8 set up is close to fixing base 3 edge relatively, and the influence is minimum when making the spanner drive the nut rotation, and the diameter of spacing hole 11 is the same with the diameter of stopper, and the exit diameter of spacing hole 11 equals the diameter of gag lever 8 to make gag lever 8 restriction sleeve 7 rotate, the stopper prevents that sleeve 7 from spinning down simultaneously, further promotes holistic stability.

The bottom plate 1, the top plate 2, the fixing seat 3, the connecting column 4, the nut 5, the threaded column 6, the sleeve 7 and the rotary table 12 are all positioned on the same central axis. When the nut 5 is rotated, the turntable 12, the connecting column 4 and the threaded column 6 are simultaneously rotated and are positioned on the same axis, and the threads screwed by the sleeve 7 and the threaded column 6 play a role in supporting, so that the sleeve 7 is stressed more uniformly, the nut 5 is convenient to rotate, and meanwhile, the bottom plate 1 and the top plate 2 can play a better supporting effect, so that the whole tower crane is more stable.

The top end of the sleeve 7 is provided with a ball groove, a friction pad 15 is arranged in the ball groove, and the friction pad 15 is movably connected with the movable ball 14. The friction pad 15 is fixedly connected with the spherical groove, when the top plate 2 deflects until the top plate is horizontal under the action of the movable ball and is fixed with the tower crane foundation section, the movable ball 14 is influenced by the gravity of the tower crane, friction between the movable ball 14 and the friction pad 15 is gradually increased along with the gravity of the tower crane, and under the action of the friction force, the movable ball 14 is fixed in the spherical groove, so that the top plate 2 is always attached to the bottom end of the tower crane foundation section, and leveling operation is performed on the tower crane foundation section through lifting of the sleeve 7.

The mounting holes 9 are provided in plurality and circumferentially distributed on the bottom plate 1 and the top plate 2. The plurality of evenly distributed mounting holes 9 are utilized, so that the connection between the bottom plate 1 and the embedded support legs of the tower crane is more stable, the connection between the top plate 2 and the foundation section of the tower crane is more stable, the leveling effect is more obvious, and the mounting stability of the tower crane is ensured.

Working principle: the four adjusting devices are respectively fixed at four corners of the top end of a pre-buried supporting leg of a tower crane, a plurality of evenly distributed mounting holes 9 on a bottom plate 1 can enable the adjusting devices to be connected with the pre-buried supporting leg more stably, then a top plate 2 is rotated to enable the adjusting devices to be attached to the bottom end of a tower crane foundation section and fixedly connected with the bottom end of the tower crane foundation section, whether the tower crane foundation section is horizontal or not is measured according to a level meter, when the tower crane foundation section is inclined, a nut 5 on the adjusting device in the corresponding direction is rotated by a spanner, a connecting column 4, a rotary table 12 and a threaded column 6 are simultaneously rotated, friction between the rotary table 12 and a fixed seat 3 is reduced under the action of a ball 16, rotation of the rotary table 12 is facilitated, the threaded column 6 is in threaded connection with a sleeve 7, the sleeve 7 can not rotate along with the threaded column 6 under the cooperation of a limit rod 8 and a limit hole 11, and can only move along the limit rod 8, so that the top plate 2 is lifted or moved downwards to level the tower crane foundation section; a limiting block fixedly connected to the top end of the limiting rod 8 prevents the limiting rod 8 from moving out of the limiting hole 11, so that the sleeve 7 is prevented from falling off from the threaded column 6; the friction between the movable ball 14 and the friction pad 15 can be gradually increased along with the weight of the tower crane, so that the movable ball 14 is fixed in the ball groove, the whole device becomes more stable, and potential safety hazards in use after the installation of the foundation section and the tower crane are added in the later stage are avoided.

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

1. The utility model provides a pre-buried landing leg adjusting device of tower crane, includes bottom plate (1), its characterized in that: the novel rotary table is characterized in that a fixing seat (3) is fixedly connected to the top end of the bottom plate (1), a rotary table (12) is rotationally connected to the fixing seat (3), a connecting column (4) is fixedly connected to the top end of the rotary table (12), a nut (5) is fixedly connected to the top end of the connecting column (4), a threaded column (6) is fixedly connected to the top end of the nut (5), a sleeve (7) is connected to the threaded column (6) in a threaded manner, a movable ball (14) is movably connected to the top end of the sleeve (7), and a top plate (2) is fixedly connected to the top end of the movable ball (14); the top end of the fixed seat (3) is fixedly connected with a limiting rod (8), the top end of the limiting rod (8) is fixedly connected with a limiting block, the bottom end of the sleeve (7) is provided with a limiting hole (11), and the limiting rod (8) is in sliding connection with the limiting hole (11); the bottom plate (1) and the top plate (2) are provided with mounting holes (9).

2. The tower crane pre-buried support leg adjusting device according to claim 1, wherein: annular cavity (17) have been seted up to fixing base (3) inside to the through-hole with annular cavity (17) intercommunication has been seted up on fixing base (3) top, annular spout (13) have all been seted up on top and bottom and the top and the bottom of carousel (12) of annular cavity (17), sliding connection has ball (16) in annular spout (13), ball (16) are equipped with a plurality ofly and evenly distributed in annular spout (13).

3. The tower crane pre-buried support leg adjusting device according to claim 1, wherein: an internal threaded hole (10) is formed in the bottom end of the sleeve (7), and the threaded column (6) is matched with the internal threaded hole (10).

4. The tower crane pre-buried support leg adjusting device according to claim 1, wherein: the limiting rods (8) and the limiting holes (11) are respectively arranged at two positions, the limiting rods (8) limit the sleeve (7) to prevent the sleeve (7) from rotating, and the limiting blocks limit the sleeve (7) to prevent the sleeve (7) from falling off.

5. The tower crane pre-buried support leg adjusting device according to claim 1, wherein: the bottom plate (1), the top plate (2), the fixing seat (3), the connecting column (4), the nut (5), the threaded column (6), the sleeve (7) and the rotary table (12) are all positioned on the same central axis.

6. The tower crane pre-buried support leg adjusting device according to claim 1, wherein: the top end of the sleeve (7) is provided with a spherical groove, a friction pad (15) is arranged in the spherical groove, and the friction pad (15) is movably connected with the movable ball (14).

7. The tower crane pre-buried support leg adjusting device according to claim 1, wherein: the mounting holes (9) are arranged in a plurality and are circumferentially distributed on the bottom plate (1) and the top plate (2).