Shearer and its traveling part

Abstract

The invention provides a coal mining machine and its running part. The traveling part of the shearer includes: traveling part gear transmission mechanism and traveling wheels; the traveling part gear transmission mechanism includes: power input shaft, input shaft gear, output shaft gear and power output shaft; the power input shaft is used for traction with the shearer The drive connection of the output shaft of the external reduction box, the drive connection of the power output shaft and the driving wheel; the output shaft gear and the power output shaft are connected through the first torque limiter set between the two, and / or, the driving wheel and the power output shaft Connected through the second torque limiter set between the two, and / or, the input shaft gear and the power input shaft are connected through the third torque limiter set between the two, and / or, the power input shaft and the adopting The output shaft of the reduction box of the traction part of the coal machine is connected through the fourth torque limiter set between the two. The technical scheme of the invention can implement overload protection for the traction system of the coal shearer in time, and reduces the construction cost of the coal shearer.

Description

technical field [0001] The invention relates to the field of coal mining machinery, more specifically, to a coal mining machine and its traveling part. Background technique [0002] The traction system of the coal shearer mainly includes the traction motor, the reduction box of the traction part and the traveling part. The traveling part includes the traveling wheels that mesh with the pin row of the middle groove of the scraper conveyor. When the traveling wheels encounter obstacles caused by hard coal seams or other reasons during the traveling process, the resistance increases due to the unchanged traction force of the shearer. The motor and the traction transmission mechanism located between the traction motor and the road wheels will suffer from a great overload load. If the overload protection is not implemented in time, the parts of the traction motor and the traction transmission mechanism may be damaged. At present, the overload protection method of the shearer tra...

AI Technical Summary

Problems solved by technology

The traveling part includes the traveling wheels that mesh with the pin row of the middle groove of the scraper conveyor. When the traveling wheels encounter obstacles caused by hard coal seams or other reasons during the traveling process, the resistance increases due to the unchanged traction force of the shearer. The motor and the traction transmission mechanism located between the traction motor and the road wheels will be subjected to a huge overload load, if the overload protection is not implemented in time, the parts of the traction motor and traction transmission mechanism may be damaged

At present, the overload protection method of the shearer traction system mainly adopts the torque shaft of the traction motor or the electrical protection method. However, the use of the torque shaft of the traction motor as the overload protection part has the following disadvantages: when the torque shaft is overloaded and broken, the shearer is running All the transmission parts between the wheel and the torque shaft of the traction motor have been heavily loaded, and the protection of the traction system is not timely. Moreover, when working in a harsh environment, the torque shaft will break frequently. Stopping the machine and replacing it with a new torque shaft will not only It will affect the construction progress and increase the construction cost

However, the electrical protection method also has obvious hysteresis, and the overload protection of the traction system of the coal mining machine cannot be implemented in time

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