Results 11 to 20 of about 66,002 (291)
Research on stabilized pressure hydraulic fluid supply technology adapted to hydraulic support actio
Gong-kuang zidonghua, 2018 In order to improve ability of hydraulic support following shearer in working face, coupling relationship among support action velocity, hydraulic system pressure and flow rate of hydraulic fluid supply was revealed by theory analysis of support ...
WANG Ranfeng +3 more
doaj +2 more sources
Design of high cutting chock type hydraulic support
Gong-kuang zidonghua, 2017 In view of problems of poor support effect, slow support speed, high support cost and great labor intensity of advance support with advanced hydraulic support, single hydraulic prop or timber in return airway of fully-mechanized high cutting coal mining ...
CAO Lianmin +5 more
doaj +2 more sources
Research on automatic detection device of hydraulic support controller
Gong-kuang zidonghua, 2017 In view of problem of low detection efficiency existed in detection process of coal mine hydraulic support controller, an automatic detection device of hydraulic support controller was designed.
YANG Hanhong, MENG Feng
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Memory attitude monitoring method for hydraulic support based on grey theory
Gong-kuang zidonghua, 2017 Existing hydraulic support monitoring methods can only monitor single support without fusion analysis of monitoring data of united hydraulic supports and have low utilization ratio of monitoring data.
WANG Yafei +3 more
doaj +2 more sources
Research on dynamic features of hydraulic system for fully mechanized mining support and its improvement design [PDF]
Gong-kuang zidonghuaIn the hydraulic support work of fully mechanized working face, there are often problems such as insufficient initial support force and slow moving speed of the support.
GUO Xinwei
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Analysis of Mechanical-Hydraulic Cooperative Response of Hydraulic Support Under Roof Rotary Impact
IEEE Access, 2023 Hydraulic support is a collaborative bearing equipment with hydraulic transmission power and mechanical bearing load. The method of the mechanical-hydraulic co-simulation model is used to discuss the response difference of hydraulic support in the process of roof rotation.
Qingliang Zeng +4 more
openaire +3 more sources
Height measurement method of hydraulic support based on multi-sensor data fusio
Gong-kuang zidonghua, 2017 In view of problems that height measurement of hydraulic support on fully mechanized coal mining face was difficult and measurement result was not accurate, taking two-column shield hydraulic support as an example, expression of hydraulic support height ...
ZHANG Kun +4 more
doaj +2 more sources
Applied SciencesThe top beam of a hydraulic support, serving as the central component of the hydraulic support assembly, directly withstands the impact loads generated by the subsidence of overlying rock strata.
Kequ Wang +5 more
doaj +2 more sources
Design of wireless hydraulic support controller
Gong-kuang zidonghua, 2017 For problems of wired hydraulic support controller in actual operation such as difficult wiring, vulnerability, limited operation range and so on, a wireless hydraulic support controller was designed. Hardware circuit design of the controller was introduced which was based on the controlling core of MSP430F149, and design scheme of the controller ...
GUO Feng, NIU Yicun
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Gong-kuang zidonghua, 2017 In view of safety problems such as premature separation of roof, advance of cutting line and rib fall of coal wall caused by being lack of initial support force of hydraulic support, a manual pressurization device for initial support force of hydraulic ...
CAO Lianmin +4 more
doaj +2 more sources