High-thrust composite single-telescopic hydraulic cylinder
A hydraulic cylinder and high thrust technology, which is applied in fluid pressure actuation devices, fluid pressure actuation system components, mechanical equipment, etc., can solve the problem that the thrust cannot meet the telescopic problems of the tailstock of heavy-duty conveyors, etc.
Pending Publication Date: 2018-04-20
CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem that the thrust of the traditional hydraulic cylinder of the same size cannot satisfy the telescopic problem of the tailstock of the heavy conveyor
Method used
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[0013] The technical solutions in the embodiments of the present invention will be described completely and clearly below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them.
[0014] Such as Figure 1 to Figure 5 As shown, a high-thrust composite single-extension hydraulic cylinder consists of a connecting ear 1, a dust-proof ring 2, a screw plug 3, a guide sleeve 4, a stroke sensor 6, a piston rod assembly 7, a piston rod 9, a cylinder assembly 10, a guide ring 5. It is composed of seal 8, two-way lock 12 and pressure sensor 13. The key to increasing the thrust of the hydraulic cylinder is to arrange a piston rod 9 inside the hydraulic cylinder to connect and fix it with the cylinder assembly 10, and arrange a channel on the piston rod 9 to communicate with the X chamber and the Y chamber, so as to increase the force bearing...
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The invention relates to the field of underground coal mine working surface complete equipment and technology, in particular to a high-thrust hydraulic cylinder used for realizing telescoping of a tail frame so as to realize tensioning a chain on a heavy scraper conveyor. The hydraulic cylinder comprises a connecting lug, a dust-proof ring, a screw plug, a guide sleeve, a travel sensor, a piston rod assembly, a piston rod, a cylinder barrel assembly, a bidirectional lock, a pressure sensor, a guide ring, a seal and the like. The hydraulic cylinder has the advantages that the piston rod is internally arranged, a channel is arranged so that the thrust surface of the piston rod assembly can be increased, and therefore the purpose of increasing the thrust of the hydraulic cylinder can be achieved; one end of a hydraulic cylinder is connected to a fixed frame body of the tail frame of the scraper conveyor, the other end of the hydraulic cylinder is connected to a movable frame body, the internal travel sensor and the external pressure sensor are connected to an electric control system, the electric control system controls the telescoping of the hydraulic cylinder according to signals uploaded by the travel sensor and the pressure sensor of the hydraulic cylinder so as to promote the telescoping of the machine tail frame, and therefore tensioning or releasing of the scraper chain connected to the machine tail frame through chain wheels can be realized.
Description
Technical field: [0001] The invention relates to the field of complete equipment and technical field of coal mine underground working face, in particular to a large-thrust hydraulic cylinder used on a heavy-duty scraper conveyor to realize the expansion and contraction of the tail frame and the tensioning of the chain. Background technique: [0002] In order to adapt to the mining of extra-thick coal seams, the scraper conveyor is also developing in the direction of large-scale, the total installed power continues to increase, and the size and weight of structural parts are also increasing. Due to the limited underground space and the limited size of the scraper conveyor, coal shearer and hydraulic support, the layout space of the telescopic hydraulic cylinder of the tailstock is limited. When the space is fixed and only one hydraulic cylinder can be arranged, the thrust of a single-extension hydraulic cylinder of the prior art cannot meet the requirements, and the expansion...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F15B15/14F15B15/28F15B15/20F15B21/08
CPCF15B15/1414F15B15/1423F15B15/20F15B15/2815F15B21/08
Inventor 黄政委蔡树梅陈贺杨刚王会来
Owner CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY