CN207537025U - A kind of novel meet an urgent need adjusts the windproof tower crane of tower crane height - Google Patents

Abstract

The utility model discloses a novel windproof tower crane capable of emergency adjusting the height of the tower crane, which comprises a main body of the windproof tower crane, a lifting arm and a balance arm, a pulley is installed above the main body of the windproof tower crane, and a counterweight is arranged at the lower end of the pulley Fixed platform, the upper right side of the counterweight fixed platform is connected with a rope, and a traction wheel is fixed above the left side of the rope, and a rope tensioning device is installed under the left side of the traction wheel, and the rope pulls The lower end of the extension device is equipped with a counterweight lifting device, and the right end of the boom is equipped with a stretching tower. This new type of windproof tower crane that can adjust the height of the tower crane in an emergency can quickly remove the counterweight before the onset of bad weather. The counterweight lifting device is activated to quickly lower the balance arm, lifting arm and electric shaft to the bottom. Through this measure, the center of gravity of the tower crane and the wind-receiving surface are changed to reduce the chance of the tower crane overturning under strong winds.

Description

A new type of windproof tower crane that can adjust the height of the tower crane in an emergency

technical field

The utility model relates to the technical field of tower cranes, in particular to a novel windproof tower crane which can adjust the height of the tower crane in an emergency.

Background technique

The traditional tower crane is a slewing crane whose jib is installed on the upper part of a high tower. The tower crane has a large working space and is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. It consists of three parts: metal structure, working mechanism and electrical system. The metal structure includes the tower body, the boom and the base, etc. The working mechanism has four parts: lifting, luffing, slewing and walking. The electrical system includes motors, controllers, power distribution cabinets, connecting lines, signals and lighting devices, etc. With the advancement of engineering technology, the floors of buildings are getting higher and higher, making the required tower cranes higher and higher, but too high tower cranes have the problem of poor stability, especially during typhoons along the southeast, often An incident in which a tower crane was hung upside down in a typhoon day caused heavy casualties.

Utility model content

The purpose of this utility model is to overcome the existing technical deficiencies, and provide a new type to solve the problems of poor stability and insufficient safety performance in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions: a new type of windproof tower crane that can adjust the height of the tower crane in an emergency, including the main body of the windproof tower crane, the lifting arm and the balance arm, a pulley is installed above the main body of the windproof tower crane, and the The lower end of the pulley is provided with a counterweight fixing platform, a rope is connected to the upper right side of the counterweight fixing platform, and a traction wheel is fixed above the left side of the rope, and a rope puller is installed on the left side of the traction wheel. stretching device, and the lower end of the rope stretching device is provided with a counterweight lifting device, the right end of the boom is equipped with a stretching tower, and the right side of the stretching tower is provided with a rope lifter, the rope A sling is connected below the lifter, and a hook is fixed at the lower end of the sling, and a runner is connected above the hook through a sling, and a stretching runner is arranged above the balance arm. A fixed platform is fixed on the lower end of the running wheel, and a counterweight moving wheel is installed under the fixed platform, and a counterweight is arranged under the counterweight moving wheel.

Further, the counterweight lifting device includes a rope lifter, and several pull ropes are arranged on the rope lifter.

Further, an appropriate amount of titanium metal is added during the manufacturing process of the balance arm and the lifting arm.

Further, an electric rotating shaft is arranged above the counterweight lifting device, and the electric rotating shaft is welded in the counterweight lifting device.

Further, the balance arm is at the same level as the boom, and the balance arm and the boom are connected through a counterweight lifting device.

Compared with the prior art, the beneficial effect of the utility model is that the new type of windproof tower crane that can adjust the height of the tower crane in an emergency can quickly unload the counterweight before the onset of bad weather, and quickly start the counterweight lifting device to make the balance The jib, jib and electric rotating shaft are quickly lowered to the bottom. By this measure, the center of gravity of the tower crane and the wind-receiving surface are changed to reduce the chance of the tower crane overturning under strong winds. Pulleys are installed. The surface of the pulleys is polished and smooth. The speed can be limited during lifting so that it will not be too fast or too slow, and the pulley is fixedly connected with the counterweight lifting device, which increases the stability and safety during the lifting process. It is equipped with stretching wheels and traction wheels, The operation of the stretching runner driven by the traction wheel can be stretched smoothly during lifting, and the load of the rope is reduced, the service life of the tower crane is improved, and energy consumption is reduced.

Description of drawings

Fig. 1 is a schematic diagram of the main structure of the utility model;

Fig. 2 is a schematic structural view of the lifting device of the present utility model;

Fig. 3 is a structural schematic diagram of the counterweight device of the present invention.

In the figure: 1-main body of windproof tower crane; 2-pulley; 3-counterweight fixed platform; 4-rope; 5-traction wheel; 6-rope stretching device; -balance arm; 10-stretching tower; 11-rope lifter; 12-sling; 13-hook; 14-runner wheel; 15-stretch runner; 16-fixed table; - counterweight, 19 - motorized shaft.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1-3, the utility model provides a technical solution: a new type of windproof tower crane that can adjust the height of the tower crane in an emergency, including a windproof tower crane main body 1, a lifting arm 8 and a balance arm 9, characterized in that: the windproof tower crane A pulley 2 is installed above the main body 1 of the tower crane, and a counterweight fixed platform 3 is provided at the lower end of the pulley 2, and a rope 4 is connected to the upper right side of the counterweight fixed platform 3, and the upper left side of the rope 4 A traction wheel 5 is fixed, a rope tensioning device 6 is installed on the left side of the traction wheel 5, and a counterweight lifting device 7 is arranged at the lower end of the rope tensioning device 6, and a counterweight lifting device 7 is installed at the right end of the boom 8. There is a stretching tower 10, and the right side of the stretching tower 10 is provided with a rope lifter 11, the bottom of the rope lifter 11 is connected with a sling 12, and the lower end of the sling 12 is fixed with a hook 13, The top of the hook 13 is connected with a runner 14 through the hanger 12, the top of the balance arm 9 is provided with a stretching runner 15, the lower end of the stretching runner 15 is fixed with a fixed platform 16, and the A counterweight moving wheel 17 is installed under the fixed platform 16 , and a counterweight 18 is arranged under the counterweight moving wheel 17 .

Further, the counterweight lifting device 7 includes a rope lifter 11, and the rope lifter 11 is provided with several stay ropes, and the force of a single stay rope is reduced through the coordination of multiple stay ropes to improve the operation security.

Further, an appropriate amount of titanium metal is added to the balance arm 9 and the boom 8 during the manufacturing process, which improves the strength of the balance arm 9 and the boom 8 and also makes the balance arm 9 and the boom 8 have a certain deformation recovery ability.

Further, the top of the counterweight lifting device 7 is provided with an electric rotating shaft 19, and the electric rotating shaft 19 is welded and installed in the counterweight lifting device 7, and the electric rotating shaft 19 is directly fixed in the counterweight lifting device 7, reducing The intermediate process is eliminated, so that the response of the counterweight lifting device 7 is quicker.

Further, the balance arm 9 and the boom 8 are at the same level, and the balance arm 9 and the boom 8 are connected by a counterweight lifting device 7, so that the balance arm 9 and the boom 8 can be moved with the counterweight Lifting device 7 lifts.

Working principle: First, when encountering bad weather, the operator controls the counterweight 18 and the hook 13 to quickly move closer to the main body 1 of the windproof tower crane to prevent the counterweight 18 from being shaken by the strong wind, which may cause the risk of collapse to the tower crane, and start the distribution system. The heavy lifting device 7 and the stretching rope 4 make the balance arm 9, the lifting arm 8 and the electric rotating shaft 19 quickly lower to the bottom along the main body 1 of the windproof tower crane, reducing the wind area of the tower crane in the air, and at the same time lowering the center of gravity of the tower crane to enhance stability In order to reduce the chance of the tower crane overturning in strong winds, when the weather improves, the tower crane can be quickly reset by reinstalling the counterweight 18, the balance arm 9, the boom 8 and the electric shaft 19. During the lifting process, the pulley 2 Limit the lifting speed to keep the lifting speed gentle, prevent the lifting arm 8 and the balance arm 9 from being unbalanced, cause damage to the tower crane, and increase safety hazards. Before the lifting arm 8 and the balance arm 9 rotate downward, release the The blocking device between the lifting slideway and the arc-shaped slideway on the boom 8 allows the lifting slideway jib 8 and the balance arm 9 to be installed on the top ends of the boom 8 and the balance arm 9 after the rotation is completed. The rope lifter 11 of portion lowers connecting rope 4, and rope 4 is bound on the hook 13 on the base, can prevent that like this boom 8 and balance arm 9 can swing with the wind and have an accident in bad weather.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (1)

1. A novel windproof tower crane that can adjust the height of the tower crane in an emergency, comprising a windproof tower crane main body (1), a boom (8) and a balance arm (9), characterized in that: the top of the windproof tower crane main body (1) is installed There is a pulley (2), and the lower end of the pulley (2) is provided with a counterweight fixed platform (3), the right upper end of the counterweight fixed platform (3) is connected with a rope (4), and the rope ( 4) is fixed with a traction wheel (5) on the upper left side, a rope tensioning device (6) is installed on the left side of the traction wheel (5), and the lower end of the rope tensioning device (6) is provided with a Heavy lifting device (7), the right end of described jib (8) is equipped with stretching tower (10), and the right side of described stretching tower (10) is provided with rope lifter (11), and described rope A sling (12) is connected below the lifter (11), and a hook (13) is fixed at the lower end of the sling (12), and a runner is connected above the hook (13) through the sling (12). (14), the top of the balance arm (9) is provided with a stretching runner (15), the lower end of the stretching runner (15) is fixed with a fixed platform (16), and the fixed platform (16 ) is equipped with a counterweight moving wheel (17), the counterweight moving wheel (17) is provided with a counterweight (18), and the counterweight lifting device (7) includes a rope lifter (11) , the rope lifter (11) is provided with several stay ropes, and an appropriate amount of titanium metal is added to the balance arm (9) and the boom (8) during the manufacturing process, and the counterweight lifting device ( 7) is provided with an electric rotating shaft (19), and the electric rotating shaft (19) is welded and installed in the counterweight lifting device (7), and the balance arm (9) is on the same level as the lifting arm (8) , and the balance arm (9) and the boom (8) are connected through a counterweight lifting device (7).