CN204781056U - Mechanism of fighting is left to excavator - Google Patents

Abstract

An excavator bucket opening mechanism relates to a mechanical mining excavator. Solve the technical problems of low efficiency, large energy consumption, difficult maintenance and low reliability in the existing technology. The utility model comprises: a motor, a frame, a reel, a reel shaft, a left bearing, a right bearing, and a shaft coupling. The motor is a permanent magnet synchronous motor fixed on the frame. The shaft device is directly connected with the reel shaft. The utility model realizes the low-speed operation of the permanent magnet synchronous motor by adopting the power supply of the frequency converter, outputs larger torque, directly drives the load to work, cancels the reducer, has a simpler and more practical structure, and improves the working efficiency of the system.

Description

A bucket opening mechanism of an excavator

technical field

The utility model relates to a bucket opening mechanism of an excavator, in particular to a bucket opening mechanism of a mechanical mining excavator.

Background technique

As a typical mechanical and electrical integrated device, the bucket opening mechanism of the mechanical mining excavator is responsible for opening the bottom of the bucket and cooperating with the excavating mechanism to complete the important task of unloading materials. It is the main core of the mechanical mining excavator. Components.

At present, there are some disadvantages and problems that we do not want to exist in the bucket opening mechanism motor and the drag system of the mechanical mining excavator. For example, the existence of the reducer causes the transmission efficiency of the entire transmission system to be greatly reduced, and there are many problems that are difficult to maintain. Since the input end of the reducer is connected to a high-speed three-phase asynchronous motor, the bearing noise is large during operation, and mechanical wear is inevitable in gear transmission. With the increase of running time, the wear makes the gap between the moving parts larger, resulting in Increased noise and decreased transmission efficiency. In the mechanical transmission device, the disadvantages of the reducer transmission system such as low efficiency, large energy consumption, and high operating noise cannot be overcome. At the same time, the wear and tear of the reducer and the oil gas and oil pollution generated during the transmission slip process will also pollute the environment.

Utility model content

The purpose of this utility model is to overcome the shortcomings of the prior art, provide a mechanical mining excavator bucket opening mechanism, solve the existing mechanical mining excavator bucket opening mechanism low efficiency, large energy consumption, difficult maintenance, reliable low technical issues.

The utility model is achieved through the following technical solutions:

A bucket opening mechanism of an excavator, comprising: a motor, a machine base, a reel, a reel shaft, a left bearing, a right bearing, and a coupling, the reel is fixed on the reel shaft, and the reel The rotating shaft is fixed on the machine base through the left bearing and the right bearing, and it is characterized in that the motor is a permanent magnet synchronous motor fixed on the machine base, and the output end of the motor passes through a coupling and the reel shaft direct connection.

Further, the bucket opening mechanism of the excavator also includes a frequency converter and a cable, and the frequency converter is connected to the motor through the cable to supply power to the motor.

Compared with the prior art, the utility model is beneficial in that:

1. The output end of the permanent magnet synchronous motor is directly installed on the reel shaft of the bucket opening mechanism of the mechanical mining excavator, and the reducer is eliminated. The structure is simple and practical, which improves the working efficiency of the system and enhances the reliability of the system operation. Reduced maintenance difficulty and cost;

2. The frequency converter is directly connected with the permanent magnet synchronous motor to realize the frequency conversion start and operation of the permanent magnet synchronous motor. The dynamic performance of the mechanism is good and the starting torque is large. At the same time, the system can run smoothly in the four quadrants and stepless speed regulation, energy-saving effect Significantly;

3. The permanent magnet synchronous motor is used, which greatly reduces the weight of the motor and the complexity of the internal structure, and brings a lot of convenience to production and installation;

4. The permanent magnet synchronous motor is used to directly drive the bucket opening mechanism of the mechanical mining excavator, and the motor transmission mode can be single drive.

Description of drawings

Fig. 1 is a structural diagram of the utility model.

Detailed ways

Typical embodiments embodying the features and advantages of the present utility model will be described in detail in the following description with reference to the accompanying drawings. It should be understood that the utility model can have various changes in different embodiments, all of which do not depart from the protection scope of the utility model, and the description and illustrations therein are used as illustrations in essence, rather than In order to limit the utility model.

As shown in Figure 1, an excavator bucket opening mechanism includes: motor 1, machine base 9, reel 5, reel shaft 4, left bearing 8, right bearing 10, coupling 3, frequency converter 6 and cables 7. The reel 5 is fixed on the reel shaft 4, the reel shaft 4 is fixed on the base 9 through the left bearing 8 and the right bearing 10, and the motor 1 is a permanent magnet synchronous motor , fixed on the base 9, the output end 2 of the motor is directly connected to the reel shaft 4 through the coupling 3, the frequency converter 6 is connected to the motor 1 through the cable 7, and the Electric motor 1 supplies power.

While the invention has been described with reference to a few exemplary embodiments, it is understood that the words which have been used are words of description and illustration, rather than of limitation. Since the present invention can be embodied in various forms without departing from the spirit or essence of the present invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be within the spirit and scope of the appended claims. Broadly interpreted, all changes and modifications that come within the scope of the claims or their equivalents are therefore intended to be covered by the appended claims.

Claims (2)

1. a bucket opening mechanism of excavator, comprise: motor (1), support (9), reel (5), reel rotating shaft (4), left bearing (8), right bearing (10), shaft coupling (3), described reel (5) is installed on described reel rotating shaft (4), described reel rotating shaft (4) is fixed on described support (9) by left bearing (8) and right bearing (10), it is characterized in that, described motor (1) is permasyn morot, be fixed on support (9), the output (2) of described motor is directly connected with described reel rotating shaft (4) by shaft coupling (3).

2. bucket opening mechanism of excavator according to claim 1, it is characterized in that, also comprise frequency converter (6) and cable (7), described frequency converter (6) is connected with described motor (1) by described cable (7), powers to described motor (1).