CN205312925U - Hydraulic luffing formula swing arm tower machine - Google Patents

Abstract

The utility model discloses a hydraulic luffing boom tower crane, which comprises a tower body; transition joints are installed on the tower body; the transition joints are connected with a lower turntable; the lower turntable is connected with an upper turntable through a slewing bearing; The upper turntable is equipped with a slewing mechanism, a lifting mechanism and a hydraulic system; the upper turntable is connected to the square arm in rotation; the square arm is connected to the hydraulic system; one end of the square arm is equipped with a balance weight, and the other end is connected to the crane arm connection. Through the design of the slewing mechanism, lifting mechanism and hydraulic system, the two rotations of the boom in the space are realized, and the two rotations and one translational movement of the hook are realized; the balance weight is designed on the square arm to keep the boom always hanging when luffing The torque on the arm is balanced, so that the jib tower crane of the present application is more stable.

Description

A hydraulic luffing jib tower crane

technical field

The utility model relates to the technical field of tower cranes, in particular to a hydraulic luffing boom tower crane.

Background technique

Luffing jib tower cranes are produced with the development of the lifting industry. Luffing jib tower cranes are widely used because they can change the amplitude and can solve the problem that the boom enters other people's airspace during construction.

However, the existing boom tower cranes still have many deficiencies in actual use. For example, the existing boom tower cranes mostly use more complicated mechanisms to realize the pitch and amplitude of the boom, and the operation is complicated and the cost is high; In addition, the existing boom tower crane is easy to lose balance when the amplitude is changed, resulting in unstable operation of the tower crane. Sometimes in order to achieve the balance of the tower crane, it is necessary to use a large-tonnage counterweight to achieve the balance of the tower body.

Although someone has applied for relevant patents on the problems existing in the boom tower crane, there are still many deficiencies, such as the upper structure of the boom tower crane introduced in the Chinese patent CN102491207A "moving boom tower crane", which is complicated to make and relies on steel wire ropes. Pulling the boom to pitch and change the amplitude, as the center of gravity of the jib changes during the process of changing the amplitude, it is necessary to use a large-tonnage counterweight to achieve the balance of the tower body, but in order to achieve a suitable balance moment and ensure the safety of the tower body under different working conditions , It is bound to increase the material usage of the tower body, thereby increasing the cost of the whole machine. Existing counterweight moving mechanism luffing jib tower cranes such as the Chinese patent CN101357741A "Luffing jib luffing tower crane counterweight automatic synchronous moving mechanism" need to add a series of auxiliary devices such as a parallel four-bar linkage mechanism and a transition rod. It is also relatively complicated, and it is very inconvenient to install and remove the balance weight under the rear arm.

Utility model content

The purpose of this utility model is to solve the above problems, and propose a hydraulic luffing jib tower crane. Aiming at the deficiencies in the actual use of the existing luffing jib tower crane, using modern mechanical design theory and concept, the existing The improved design is carried out on the basis of the luffing jib tower crane, so that the luffing jib tower crane of the present application can further meet the needs of users.

In order to achieve the above object, the utility model adopts the following technical solutions:

A hydraulic luffing jib tower crane, comprising a tower body; transition joints are installed on the tower body; the transition joints are connected to a lower turntable; the lower turntable is connected to an upper turntable through a slewing bearing; A slewing mechanism, a hoisting mechanism and a hydraulic system are installed; the upper turntable is rotatably connected to the square arm; the square arm is connected to the hydraulic system; one end of the square arm is equipped with a balance weight, and the other end is connected to the boom.

The tower body is composed of several tower body sections connected sequentially by high-strength bolts,

The bottom of the tower body is fixed on the reinforced concrete foundation by anchor bolts.

A jacking sleeve is also installed on the tower body; the jacking sleeve is sleeved on the tower body section of the tower body.

The jacking sleeve is connected with four bracing lugs welded on the transition joint through four connecting pins.

The lifting mechanism includes a driving motor; the driving motor is connected with a runner; the runner is connected with a lifting wire rope; and the lifting wire rope is connected with the hook through a pulley block on the boom.

The hydraulic system includes a hydraulic motor; the motor is connected to an oil pump; the inlet of the oil pump is connected to an oil tank; the outlet of the oil pump is connected to a hydraulic cylinder; and the hydraulic cylinder is directly connected to the oil tank through an oil outlet pipe.

The slewing mechanism includes a slewing motor, and the slewing motor is connected to the rotating shaft through gears.

An operating room is designed on the upper turntable; a controller is installed in the operating room; the controller is respectively connected with the driving motor, the hydraulic motor and the driving motor, and is used to control the start and stop of the driving motor, the hydraulic motor and the driving motor.

The balance weight is fixed on the square arm.

The beneficial effects of the utility model are:

The utility model is a hydraulic luffing boom tower crane, through the design of the slewing mechanism, the hoisting mechanism and the hydraulic system, the two rotations of the boom in the space are realized, and the two rotations and one translation of the hook are realized; The balance weight is designed on the top, so that the boom always maintains the torque balance on the boom when it is luffing, so that the boom tower crane of the application is more stable.

Description of drawings

Fig. 1 is the structural representation of the boom tower crane of the present invention;

Fig. 2 is a partially enlarged view of the slewing bearing of the present invention;

Fig. 3 is the local enlargement figure of transition section of the present invention;

Fig. 4 is the structure schematic diagram when the boom tower crane of the present invention changes amplitude;

Among them, 1. Reinforced concrete foundation, 2. Anchor bolts, 3. Tower body, 4. Jacking sleeve frame, 5. Transition section, 6. Lower turntable, 7. Slewing bearing, 8. Hoisting mechanism, 9. Lifting Lifting wire rope, 10. Slewing mechanism, 11. Upper turntable, 12. Hydraulic system, 13. Counterweight, 14. Square arm, 15. Operating room, 16. Boom, 17. Pulley block, 18. Hook, 19. High Strength bolts, 20. Tower section, 21. Oil cylinder pin, 22. Connecting pin, 23. Pin, 24. Support lug.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

As shown in Figures 1 and 4, a hydraulic luffing jib tower crane includes a tower body 3; a transition section 5 is installed on the tower body 3; the transition section 5 is connected to the lower turntable 6; the lower turntable 6 is supported by a slewing support 7 is connected with the upper turntable 11; the upper turntable 11 is equipped with a slewing mechanism 10, a lifting mechanism 8 and a hydraulic system 12; the upper turntable 11 is rotationally connected with the square arm 14; the square arm 14 is connected with the hydraulic system 12; one end of the square arm 12 is installed Balance weight 13 is arranged, and the other end is connected with boom 16.

The tower body 3 is formed by successively connecting several tower body sections 20 through high-strength bolts 19,

The bottom of the tower body 3 is fixed on the reinforced concrete foundation 1 by anchor bolts 2 .

As shown in FIG. 2 , a jacking sleeve 4 is installed on the tower body 3 ; the jacking sleeve 4 is set on the tower body section 20 of the tower body 3 .

As shown in FIG. 3 , the jacking sleeve 4 is connected to the four bracing lugs 24 welded on the transition section 5 through four connecting pins 22 .

The hoisting mechanism 8 includes a drive motor; the drive motor is connected with a runner; the runner is connected with a lifting wire rope 9 ;

The hydraulic system 12 includes a hydraulic motor; the motor is connected to the oil pump; the inlet of the oil pump is connected to the fuel tank; the outlet of the oil pump is connected to the hydraulic cylinder; the hydraulic cylinder is directly connected to the fuel tank through the oil outlet pipe.

The slewing mechanism 10 includes a slewing motor, which is connected to the rotating shaft through gears.

An operating room 15 is designed on the upper turntable 11; a controller is installed in the operating room 15; the controller is respectively connected with the driving motor, the hydraulic motor and the driving motor, and is used to control the start and stop of the driving motor, the hydraulic motor and the driving motor.

Balance weight 13 is fixed on square arm 14.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (9)

1. a hydraulic luffing formula movable arm tower crane, is characterized in that, including tower body; Described tower body is provided with excessive joint; Described excessive joint is connected with lower turntable; Described lower turntable is connected with upper turntable by pivoting support; Described upper turntable is provided with slew gear, lifting mechanism and hydraulic system; Described upper turntable is rotationally connected with four directions arm; Described four directions arm is connected with hydraulic system; Arm one end, described four directions is provided with balance weight, and the other end is connected with arm.

2. a kind of hydraulic luffing formula movable arm tower crane as claimed in claim 1, is characterized in that, described tower body is connected in sequence by high-strength bolt by some tower bodies joint; It is fixed on reinforced concrete foundation by foundation bolt bottom described tower body.

3. a kind of hydraulic luffing formula movable arm tower crane as claimed in claim 2, is characterized in that, described tower body is also equipped with jacking stock; Described jacking stock is enclosed within the tower body joint of tower body.

4. a kind of hydraulic luffing formula movable arm tower crane as claimed in claim 3, is characterized in that, described jacking stock connects bearing pin by four and is connected with four support ears of the upper welding of excessively joint.

5. a kind of hydraulic luffing formula movable arm tower crane as claimed in claim 1, is characterized in that, described lifting mechanism includes drive motor; Described drive motor is connected to runner; Described runner is connected to hoist rope; Described hoist rope is connected with suspension hook by the assembly pulley on arm.

6. a kind of hydraulic luffing formula movable arm tower crane as claimed in claim 1, is characterized in that, described hydraulic system includes hydraulic electric motor; Described motor is connected with oil pump; Described oil pump inlet is connected with fuel tank; Described oil delivery side of pump is connected with hydraulic cylinder; Described hydraulic cylinder is directly connected with fuel tank by flowline.

7. a kind of hydraulic luffing formula movable arm tower crane as claimed in claim 1, is characterized in that, described slew gear includes turning motor, and described turning motor is connected with rotating shaft by gear.

8. a kind of hydraulic luffing formula movable arm tower crane as claimed in claim 1, is characterized in that, on described upper turntable, design has operating room; In described operating room, controller is installed; Described controller is connected with drive motor, hydraulic electric motor and drive motor respectively.

9. a kind of hydraulic luffing formula movable arm tower crane as claimed in claim 1, is characterized in that, described balance weight is fixed on the arm of four directions.