Protection device and method for permanent magnet semi-direct drive cutting transmission system of coal shearer
A technology of transmission system and protection device, applied in the direction of driving device, slitting machinery, earth-moving drilling and mining, etc., can solve the problems of permanent magnet drive motor volatile magnetism, insufficient driving motor power, damage to its own structure, etc., and achieve extended and effective work. Time, practicability, the effect of reducing the overall cost
Active Publication Date: 2022-01-28
CHINA UNIV OF MINING & TECH +1
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Problems solved by technology
[0003] Technical problem: The purpose of the present invention is to provide a permanent magnet semi-direct drive cutting drive system of the existing coal shearer for the self-structural damage caused by the inability to adapt to large load changes, which affects the life of the motor. Drive cutting transmission system protection device and method to solve the problem that the permanent magnet drive motor of the permanent magnet semi-direct drive cutting transmission system of the coal mining machine is easily demagnetized due to impact, resulting in insufficient power of the drive motor and the failure of the device to operate, so as to ensure mining Coal machine permanent magnet semi-direct drive cutting transmission system runs smoothly and prolongs its service life
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Embodiment Construction
[0022] The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:
[0023] The protection device of the permanent magnet semi-direct drive cutting transmission system of the coal mining machine of the present invention is mainly composed of a drive gear 1, a transmission shaft 2, a power output shaft 15, an intermediate protection device and a host computer 16, and the intermediate protection device is located at Between the power output shaft 15 and the transmission shaft 2, the intermediate protection device includes an outer cover 3, a hydraulic cylinder 4, a bearing 5, a gear shaft spoke plate 6, a gear shaft 7, a spring mounting seat 8, an ear plate 9, a spring 10. End cover 11 , return spring 13 and power output shaft bearing 14 ; the power output shaft bearing 14 , return spring 13 and gear shaft 7 are sequentially set on the power output shaft 15 for the reset of the gear shaft 7 . The end cover 11 is fixed on...
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A shearer permanent magnet semi-direct drive cutting transmission system protection device and method, belonging to the technical field of vibration reduction and protection of the shearer cutting part, including driving gears, transmission shafts, outer covers, hydraulic cylinders, bearings, gear hubs and spokes Plate, gear shaft, spring, spring mounting seat, lug plate, torque sensor, PTO shaft bearing, PTO shaft, upper computer. When the signal collected by the torque sensor is transmitted to the upper computer, the upper computer controls the expansion and contraction of the hydraulic cylinder to adjust the position of the gear shaft, thereby changing the number of contact between the spokes on the gear shaft and the ear plate, and then adjusting the self-stiffness of the protection device, and with the help of the spring Absorb load impact and protect permanent magnet synchronous motor. It solves the problem that the permanent magnet semi-direct drive cutting transmission system of the coal shearer is easily demagnetized by the impact, resulting in the lack of power of the drive motor and the device cannot operate, thus ensuring the permanent magnet semi-direct drive cutting transmission system of the coal shearer. Smooth operation and extended service life.
Description
technical field [0001] The invention relates to a protection device and method for a transmission system, in particular to a protection device and method for a permanent magnet semi-direct drive cutting transmission system of a coal shearer suitable for use between a permanent magnet drive motor and a transmission gear. The technical field of vibration reduction and protection of cutting parts. Background technique [0002] At present, for the permanent magnet synchronous motor used in the permanent magnet semi-direct drive cutting transmission system of the coal shearer, its power output shaft is directly connected with the transmission gear, and finally the power is transmitted to the cutting drum to complete the power transmission. However, in view of the special working conditions of the permanent magnet semi-direct drive cutting transmission system of the coal shearer, the load variation range is relatively large during the working process, and the permanent magnet sync...
Claims
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IPC IPC(8): E21C31/02E21C35/04E21C35/00
CPCE21C31/02E21C35/04E21C35/00
Inventor 盛连超陆贺李威许少毅申建伟姜耸王承涛陈宇鸣
Owner CHINA UNIV OF MINING & TECH