CN218909659U - A tower crane lifting mechanism - Google Patents

Abstract

The utility model relates to a hoisting mechanism of a tower crane, which solves the technical problems of large volume and high weight of the existing hoisting mechanism of tower cranes. drum, the motor is connected to the reducer, the reducer is connected to the reel, the reducer is also equipped with a brake, the reducer is a four-stage gear reducer, and the reducer is provided with a The box body is provided with 5 reducer shafts arranged sequentially in the same horizontal plane, the input shaft of the reducer is connected with the main shaft of the motor, the output shaft of the reducer is connected with the main shaft of the reel connect. The utility model can be widely used in occasions where tower cranes lift heavy objects.

Description

A tower crane lifting mechanism

technical field

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

Background technique

Tower crane hoisting mechanism, also called "hoisting mechanism", is the basic structure necessary for cranes to lift and lower objects. The hoisting mechanism is driven by the hoisting motor through the coupling through the hollow shaft of the reducer to rotate the reel, so that the wire rope/cable wound on the reel drives the hook device to rise or fall. For different lifting heights, it may be necessary to configure corresponding couplings and support frames. The quality of the lifting mechanism will directly affect the working performance of the whole crane. However, the existing tower crane hoisting mechanism adopts a three-stage reducer, which has a large volume, high weight, high cost of materials, and inconvenient processing.

Utility model content

In order to solve the technical problems of the existing tower crane hoisting mechanism with large volume and high weight, the utility model provides a tower crane hoisting mechanism with low material cost, convenient processing, small size, energy saving heat treatment and low manufacturing cost.

The utility model provides a hoisting mechanism of a tower crane, which is provided with a base, and the base is provided with a motor, a brake, a reducer and a reel, the motor is connected with the reducer, the reducer is connected with the The reel is connected, and the reducer is also provided with a brake. The reducer is a four-stage gear reducer. reducer shaft, the input shaft of the reducer is connected to the main shaft of the motor, and the output shaft of the reducer is connected to the main shaft of the reel.

Preferably, the reducer is provided with 5 reducer shafts including shaft I, shaft II, shaft III, shaft IV and shaft V, the shaft I is the input shaft, the shaft V is the output shaft, and the shaft I , II shaft, III shaft and IV shaft are gear shafts, and the gear shafts mesh with driven wheels connected with keys on the II shaft, III shaft, IV shaft and V shaft respectively, so as to realize the four-stage deceleration of the reducer.

Preferably, the brake is provided on the shaft of the reducer I, and the brake is an electrohydraulic brake.

Preferably, the motor is a motor with 2P poles, and the inverter frequency adjustment range of the motor is 3-65HZ.

Preferably, the base is also provided with a rope rower arranged parallel to the main shaft of the reel, the rope rower is provided with a main shaft, and the main shaft is provided with rollers, and the rollers can slide left and right along the main shaft and at the same time The spindle axis rotates freely.

The beneficial effects of the utility model are:

Compared with common products on the market, the utility model has the advantages of low material cost, convenient processing, small size, energy saving by heat treatment, and low manufacturing cost. The utility model adopts a 2P pole number engine, which improves the transmission speed ratio and the speed. Adjusting at 3-65HZ can reduce the eddy current of the motor and improve the service life of the frequency converter. The reducer of the utility model adopts four-stage deceleration, one-stage deceleration is added, the gear diameter is reduced by 50%, the large knocking of the gear diameter is reduced, the centrifugal force in the irrational direction is reduced, and the kinetic energy transmission efficiency is further improved; the shell height and The width reduces the weight of the shell by 38%, and reduces the manufacturing cost by 50%; the brake has no slipping and smoke phenomenon, and the service life of the brake is increased by 2-5 times.

Description of drawings

Fig. 1 is the front view structural representation of the utility model;

Fig. 2 is the top view structural representation of the utility model;

Fig. 3 is a top view sectional structure schematic diagram of the speed reducer of the present invention.

Explanation of reference symbols:

1. Base; 2. Motor; 3. Brake; 4. Reducer; 41. Ⅰ shaft; 42. Ⅱ shaft; 43. Ⅲ shaft; 44. Ⅳ shaft; 45. Ⅴ shaft; Rope.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art to which the utility model belongs can easily implement the utility model.

Example:

As shown in Figure 1-3, the utility model is provided with base 1, and base 1 is provided with motor 2, brake 3, speed reducer 4, reel 5 and rope puller 6. The I-axis 41 of the reducer 4 is connected to the main shaft of the motor 2, the V-axis 45 of the reducer 4 is connected to the main shaft of the reel 5, the motor 2 is arranged in parallel with the reel 5, and the I-axis 41 of the reducer 4 is also provided with a brake 3. The reel 5 is used for rewinding the suspension rope, and one side of the reel 5 is also provided with a rope rower 6 in parallel for evenly laying the suspension layer on the reel 5 layer by layer. The rope rower 6 is provided with a main shaft on which Sliding is provided with a roller, and the roller can slide left and right along the main shaft and rotate freely along the main shaft. When the reel 5 rotates, the suspension rope on the reel 5 is in rolling contact with the roller.

The motor 2 adopts a motor with 2P poles, the frequency can be adjusted from 3 to 65 Hz, the transmission speed ratio is improved, the frame size is reduced, and the manufacturing cost is reduced by 50%. The 2P pole number motor is used to reduce the eddy current of the motor and improve the service life of the motor inverter.

The brake 3 is an electro-hydraulic brake. After the brake 3 is energized, the centrifugal pump delivers high-pressure oil to make the piston move, and the brake 3 is driven to close the brake or release the brake to reset.

As shown in Figure 3, the reducer 4 is a four-stage gear reducer, which is provided with a box body, and the box body is sequentially provided with an I shaft 41, a II shaft 42, a III shaft 43, a IV shaft 44 and a V shaft 45, a total of 5 shafts. The shafts of the two reducers are arranged in sequence in the same horizontal plane. The I shaft 41 is the input shaft, and the V shaft 45 is the output shaft. Among them, the I shaft 41, II shaft 42, III shaft 43, and IV shaft 44 are gear shafts. The gear is used as a driving wheel, and meshes with driven wheels connected with keys on the II shaft 42, III shaft 43, IV shaft 44 and V shaft 45 respectively to realize four-stage deceleration. Compared with the traditional three-stage reducer, adding one stage of reduction can reduce the gear diameter by 50%, reducing the large knocking of the gear diameter. The diameter of the gear is reduced, which facilitates gear processing, reduces material costs, saves heat treatment energy consumption, changes the height and width of the shell, and reduces the weight of the shell by 38%.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the scope of the claims of the present utility model shall fall within the protection scope of the present utility model.

Claims (5)

1. A tower crane hoisting mechanism, which is provided with a base, and the base is provided with a motor, a brake, a reducer and a reel, the motor is connected with the reducer, and the reducer is connected with the reel connected, the reducer is also provided with a brake, and it is characterized in that the reducer is a four-stage gear reducer, and the reducer is provided with a box, and the box is provided with sequentially arranged in the same horizontal plane 5 reducer shafts, the input shaft of the reducer is connected with the main shaft of the motor, and the output shaft of the reducer is connected with the main shaft of the reel. 2. The hoisting mechanism of the tower crane according to claim 1, characterized in that, the reducer is provided with five reducer shafts including shaft I, shaft II, shaft III, shaft IV and shaft V, and the shaft I is The input shaft, the V shaft is the output shaft, the I shaft, II shaft, III shaft, and IV shaft are gear shafts, and the gear shafts are connected with the II shaft, III shaft, IV shaft and V shaft respectively. The driving wheel meshes to realize the four-stage deceleration of the reducer. 3. The hoisting mechanism of the tower crane according to claim 2, wherein the brake is provided on the shaft of the reducer I, and the brake is an electro-hydraulic brake. 4. The hoisting mechanism of the tower crane according to claim 1, wherein the motor is a motor with 2P poles, and the frequency adjustment range of the frequency converter of the motor is 3-65HZ. 5. The hoisting mechanism of the tower crane according to claim 1, characterized in that, the base is also provided with a rope arranging device parallel to the main shaft of the reel, the said rope arranging device is provided with a main shaft, and the main shaft is provided with a There are rollers that can slide left and right along the main shaft while freely rotating along the main shaft axis.

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