Flexible start speed adjusting device capable of realizing belt-type conveyor on-load power isolation

Abstract

A flexible start speed adjusting device capable of realizing belt-type conveyor on-load power isolation overcomes the defects that in an existing belt-type conveyor multi-motor driving system, the working condition of non-load operation or light-load operation often occurs, and energy is wasted. The flexible start speed adjusting device is characterized in that brake mounting holes are machined in one side, provided with a pump wheel axle, of a box body, an electro-magnetic brake is installed through a brake bearing seat, and a driven gear which is matched with a driving gear is installed on a brake shaft of the electro-magnetic brake. The flexible start speed adjusting device has the advantages that the multi-motor driven belt-type conveyor on-load power isolation function is realized, the purpose of saving energy is achieved, the type selection range of the electro-magnetic brake is small, the technology realizing difficulty is low, an electromagnetic brake body is low in manufacturing cost, the purposes that torque impact of equipment during the motor power isolation process or the motor power reapplication process is reduced, and when a certain motor in the driving system of the bet-type conveyor fails, the motor can be turned off under the condition that loads allow and the normal work and operation of the belt-type conveyor are not influenced are realized, and the continuous operation capacity of the conveyor is improved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic transmission, and in particular relates to a multi-machine drive applied to a belt conveyor, so that the belt conveyor can realize on-load power isolation or a re-introduced belt conveyor can carry on-load power isolation without stopping. Soft start governor. Background technique [0002] The belt conveyor is the main equipment for transporting bulk materials. The driving system of the large-capacity, long-distance belt conveyor usually consists of two or more motors. During the operation of the belt conveyor, there are often no-load or light-load operating conditions. Under such conditions, the drive motor system of the belt conveyor has high energy consumption loss and low power factor, resulting in huge Energy waste. In order to solve the above problems, the existing technology usually adopts the structure of installing an overrunning clutch on the low-speed shaft of the belt conveyor red...

AI Technical Summary

Problems solved by technology

During the operation of the belt conveyor, there are often no-load or light-load operating conditions. Under such conditions, the drive motor system of the belt conveyor has high energy consumption loss and low power factor, resulting in huge Energy waste

In order to solve the above problems, the existing technology usually adopts the structure of installing an overrunning clutch on the low-speed shaft of the belt conveyor reducer to reduce the energy consumption of the motor system and improve the power factor of the motor system. However, due to the The low-speed shaft torque of the conveyor reducer and the nominal torque of the overrunning clutch do not overlap, so that in practical applications, the high-torque belt conveyor usually cannot select a suitable nominal torque overrunning clutch; If a suitable overrunning clutch is selected for the torque belt conveyor, it will also have an adverse effect on the design and cost control due to the oversized overrunning clutch; in addition, the installation of an overrunning clutch on the low-speed shaft of the belt conveyor reducer can stop the motor from running. The drive unit is in the overrunning condition, the torque of the belt conveyor will not be reversely transmitted to the motor, but the motor will produce a positive torque impact when it is restarted and put into operation, which will have an adverse effect on the belt conveyor

[0003] The utility model patent with the application number 200620093870.,9 proposed by the applicant discloses a flexible start-up speed control device for belt conveyors, which includes a speed control transmission unit and an automatic control unit with a touch monitor. The main point is that the inner end of the flow channel of the pump wheel working chamber in the rotor body of the speed-regulating fluid coupling of the speed-regulating transmission unit is provided with an oil inlet, and the inlet end of the flow channel of the turbine working chamber is provided with a buffer guide flow channel, The oil drain screw plug connected to the working chamber is installed in the circumferential direction of the rotating shell, the pull rod of the guide tube control device and the crank of the electric actuator are hinged by connecting rods, and the PID module of the automatic control unit based on PLC and the signal of the speed regulating transmission unit The sensing unit forms a closed-loop adjustment circuit. This device can enable the drive motor to start without load and reduce the acceleration torque of the load. However, this device cannot achieve the purpose of belt conveyor power isolation or re-introduction under running conditions, and there are still When the belt conveyor runs under no-load or light-load conditions during operation, it cannot cut off the power input of some motors, resulting in unnecessary waste of energy. This problem is caused by the use of belt conveyors in ports and mines. The technical problems that have been hoped to be solved on occasions

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