Reversing-valve unloading pushrod device used under coal mine

Abstract

The invention is a reversing-valve unloading pushrod device used under a coal mine. The device includes bolts, elastic retainer rings used for a shaft, deep groove ball bearings, a hinge pin, a fork-head base, a first nut, a sliding rod, a first threaded hole, a second threaded hole, a cylinder sleeve, a connecting rod, external threads, a compression spring, a second nut, a motor reversing valve, and a connecting plate. The device has the advantages that the fork-head base and the sliding rod are connected by threads, so that it is convenient for installation and disassembly during practical operation; when installed, the compression spring has a pretightening force for supporting the fork-head base and the deep groove ball bearings, the motor reversing valve is prevented from being opened when the device bumps up and down during operation at the operating condition of no generated collision, and therefore the pushrod device is more stable, safe and reliable; then the device is used under the coal mine, after a sliding block of a centrifugal speed governor is thrown away, the disassembly of the motor reversing valve is achieved by the push rod device, the movement of the device is safe and reliable, and the device runs smoothly.

Description

technical field [0001] The invention relates to an unloading push rod device, in particular to a coal mine underground reversing valve unloading push rod device, which belongs to the technical field of coal mine machinery application. Background technique [0002] The development of my country's coal industry is getting faster and faster, and the environment of coal mines is becoming more and more complex. Under the requirements of my country's vigorous construction of safe, efficient and high-yield modern mines, the modernization degree of auxiliary transportation has become an important measure of the modernization level of coal mines. index. With the development of coal mining technology, the extension of mine mining, and the continuous improvement of production efficiency, how to realize safe, continuous, and efficient long-distance transportation of mine underground equipment in complex and changeable roadway conditions is an important issue for underground auxiliary equ...

AI Technical Summary

Problems solved by technology

The slider is thrown out by the centrifugal releaser, and after colliding with the lever device, the push rod device is compressed to unload the unloading valve; on the other hand, the push rod device is equipped with a manual lever, which can be manually controlled to directly unload the unloading valve. The load valve is unloaded, so as to realize the braking work of the brake. However, the current push rod device of the reversing valve used in underground coal mines has many shortcomings, such as the fork head device and the slide rod are welded as a whole, which is inconvenient to disassemble and replace, and the traditional The push rod device is inconvenient to convert the force to open the reversing valve, and often under the condition of no collision, the motorized reversing valve is opened due to the up and down movement of itself, and the safety cannot be guaranteed. Therefore, for The above problems propose an unloading push rod device for reversing valves in coal mines

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