CN218909659U

CN218909659U - Tower crane lifting mechanism

Info

Publication number: CN218909659U
Application number: CN202223197238.7U
Authority: CN
Inventors: 王长春
Original assignee: Rongcheng City Numerical Control Instrument Co ltd
Current assignee: Rongcheng City Numerical Control Instrument Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-04-25
Anticipated expiration: 2032-11-28

Abstract

The utility model relates to a tower crane lifting mechanism which solves the technical problems of large volume and high weight of the existing tower crane lifting mechanism. The utility model can be widely applied to occasions of lifting the heavy objects of the tower crane.

Description

Tower crane lifting mechanism

Technical Field

The utility model relates to the field of machinery, in particular to a lifting mechanism of a tower crane.

Background

The lifting mechanism of the tower crane, also called as a lifting mechanism, is a basic structure which is necessary for a crane and is used for lifting and lowering objects. The lifting mechanism drives the winding drum to rotate through the hollow shaft of the speed reducer by the lifting motor through the coupler, so that the wire rope/cable wound on the winding drum drives the lifting hook device to ascend or descend. Corresponding couplings and holders may need to be configured for different lifting heights. The working performance of the whole crane is directly affected by the working quality of the lifting mechanism. However, the existing tower crane lifting mechanism adopts a three-stage speed reducer, and has the disadvantages of large volume, high weight, high material cost and inconvenient processing.

Disclosure of Invention

The utility model aims to solve the technical problems of large volume and high weight of the existing tower crane lifting mechanism and provides the tower crane lifting mechanism which has the advantages of low material cost, convenient processing, small and exquisite structure, energy saving in heat treatment and low manufacturing cost.

The utility model provides a tower crane lifting mechanism which is provided with a base, wherein a motor, a brake, a speed reducer and a winding drum are arranged on the base, the motor is connected with the speed reducer, the speed reducer is connected with the winding drum, the brake is also arranged on the speed reducer, the speed reducer is a four-stage gear speed reducer, the speed reducer is provided with a box body, the box body is provided with 5 speed reducer shafts which are sequentially arranged in the same horizontal plane, an input shaft of the speed reducer is connected with a main shaft of the motor, and an output shaft of the speed reducer is connected with the main shaft of the winding drum.

Preferably, the speed reducer is provided with 5 speed reducer shafts in total, namely an I shaft, an II shaft, an III shaft, an IV shaft and a V shaft, wherein the I shaft is an input shaft, the V shaft is an output shaft, the I shaft, the II shaft, the III shaft and the IV shaft are gear shafts, and the gear shafts are respectively meshed with driven wheels which are connected with the II shaft, the III shaft, the IV shaft and the V shaft in an upper key manner, so that four-stage speed reduction of the speed reducer is realized.

Preferably, the brake is arranged on the speed reducer I shaft, and the brake is an electric hydraulic brake.

Preferably, the motor is a 2P pole number motor, and the frequency of the frequency converter of the motor is adjusted to be 3-65HZ.

Preferably, the base is further provided with a rope guide arranged in parallel with the spindle of the winding drum, the rope guide is provided with a spindle, the spindle is provided with rollers, and the rollers can slide left and right along the spindle and simultaneously rotate freely along the axis of the spindle.

The beneficial effects of the utility model are as follows:

compared with the common product in the market, the utility model has the advantages of low material cost, convenient processing, small and exquisite size, energy consumption saving in heat treatment and low manufacturing cost. The utility model adopts the 2P pole number engine, improves the transmission speed ratio, improves the rotating speed, ensures that the load lifting is limited by gears, is safe to carry out at uniform speed, improves the stability in the load operation, and achieves the aim of safety; the 2P pole number motor is adopted, the frequency is adjusted at 3-65HZ, the motor vortex is reduced, and the service life of the frequency converter is prolonged. The speed reducer adopts four-stage speed reduction, increases one-stage speed reduction, reduces the diameter of a gear by 50%, reduces large knocking of the diameter of the gear, reduces the centrifugal force in an irrational direction, and further improves the kinetic energy transmission efficiency; the height and the width of the shell are changed, the weight of the shell seeds is reduced by 38%, and the cost is reduced by 50%; the brake has no slipping and smoking phenomenon, and the service life of the brake is prolonged by 2-5 times.

Drawings

FIG. 1 is a schematic diagram of the front view of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

fig. 3 is a schematic top view of the structure of the speed reducer of the present utility model.

Description of the drawings:

1. a base; 2. a motor; 3. a brake; 4. a speed reducer; 41. an I shaft; 42. a II shaft; 43. III, an axle; 44. IV shaft; 45. a V-axis; 5. a reel; 6. a rope arranging device.

Detailed Description

The present utility model is further described below with reference to the drawings and examples so that those skilled in the art to which the present utility model pertains can easily practice the present utility model.

Examples:

as shown in fig. 1-3, the utility model is provided with a base 1, and the base 1 is provided with a motor 2, a brake 3, a speed reducer 4, a winding drum 5 and a rope guider 6. The I axle 41 of speed reducer 4 is connected with motor 2 main shaft, the V axle 45 of speed reducer 4 is connected with reel 5 main shaft, motor 2 and reel 5 parallel arrangement still are equipped with stopper 3 on the I axle 41 of speed reducer 4, reel 5 is used for rolling up the lifting rope, reel 5 one side still parallel is equipped with rope guide 6 and is used for evenly tiling the lifting rope layer by layer to reel 5 on, rope guide 6 is equipped with the main shaft, on the main shaft slidable be equipped with a gyro wheel, the gyro wheel can slide along the main shaft side to side and simultaneously along the main shaft free rotation, when reel 5 is rotatory, lifting rope on the reel 5 and gyro wheel rolling contact.

The motor 2 adopts a 2P pole number motor, the frequency can be adjusted at 3-65HZ, the transmission speed ratio is improved, the base number is reduced, and the manufacturing cost is reduced by 50%. The 2P pole number motor is adopted, so that the vortex of the motor is reduced, and the service life of the motor frequency converter is prolonged.

The brake 3 is an electric hydraulic brake, and after the brake 3 is electrified, the centrifugal pump transmits high-pressure oil to enable the piston to act, so that the brake 3 is driven to be closed for braking or released for resetting.

As shown in fig. 3, the speed reducer 4 is a four-stage gear speed reducer, which is provided with 1 box body, wherein 5 speed reducer shafts including an i shaft 41, an ii shaft 42, an iii shaft 43, an iv shaft 44 and an v shaft 45 are sequentially arranged in the box body in the same horizontal plane, the i shaft 41 is an input shaft, the v shaft 45 is an output shaft, the i shaft 41, the ii shaft 42, the iii shaft 43 and the iv shaft 44 are gear shafts, gears on the gear shafts are used as driving wheels, and are respectively meshed with driven wheels in key connection with the ii shaft 42, the iii shaft 43, the iv shaft 44 and the v shaft 45, so that four-stage speed reduction is realized. Compared with the traditional three-stage speed reducer, the one-stage speed reducer is added, so that the diameter of a gear can be reduced by 50%, and the large knocking of the diameter of the gear is reduced. The diameter of the gear is reduced, the gear processing is convenient, the material cost is reduced, the heat treatment energy consumption is saved, the height and width of the shell are changed, and the weight of the shell is reduced by 38%.

The above description is only for the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the scope of the claims of the present utility model should fall within the protection scope of the present utility model.

Claims

1. The utility model provides a tower machine hoisting mechanism, it is equipped with the base, be equipped with motor, stopper, speed reducer and reel on the base, the motor with the speed reducer is connected, the speed reducer with the reel is connected, still be equipped with the stopper on the speed reducer, characterized by, the speed reducer is the four-stage gear reducer, the speed reducer is equipped with a box, the box is equipped with 5 speed reducer axles that are located same horizontal plane and arrange in proper order, the input shaft of speed reducer with the main shaft of motor is connected, the output shaft of speed reducer is connected with the main shaft of reel.

2. The tower crane lifting mechanism according to claim 1, wherein the speed reducer is provided with 5 speed reducer shafts in total, i, ii, iii, iv and v shafts, the i shaft is an input shaft, the v shaft is an output shaft, the i, ii, iii and iv shafts are gear shafts, and the gear shafts are respectively meshed with driven wheels in key connection with the ii, iii, iv and v shafts, so that four-stage speed reduction of the speed reducer is realized.

3. The tower crane lifting mechanism according to claim 2, wherein the brake is arranged on the speed reducer I shaft, and the brake is an electric hydraulic brake.

4. The tower crane lifting mechanism of claim 1, wherein the motor is a 2P pole count motor and the frequency of the frequency converter of the motor is adjusted to a range of 3-65HZ.

5. The hoisting mechanism of the tower crane according to claim 1, wherein the base is further provided with a rope guider arranged in parallel with a main shaft of the winding drum, the rope guider is provided with a main shaft, the main shaft is provided with rollers, and the rollers can slide left and right along the main shaft and simultaneously can rotate freely along a main shaft axis.