Zobrazeno 1 - 10
of 772
pro vyhledávání: '"XIE Miao"'
Publikováno v:
Jixie qiangdu, Vol 44, Pp 155-161 (2022)
In order to study the transportation efficiency of the aggregate device of coal cleaning machine, taking a certain type of coal cleaning machine as the research object, establishing the mechanical model of interaction between particles and blades, ob
Externí odkaz:
https://doaj.org/article/4bc64ed1a67f4d8eac8d9778616ea70d
Publikováno v:
Jixie qiangdu, Vol 44, Pp 317-325 (2022)
Considering the current heavy mining and light digging in coal mines, limitations of the structural design of the fully mechanized excavation equipment, backward tunneling technology and other problems lead to inefficient tunneling. mining ratio is o
Externí odkaz:
https://doaj.org/article/ba88fdbd085347f8ab907c295395d364
Publikováno v:
Jixie qiangdu, Vol 44, Pp 279-286 (2022)
This article is a study on the physical properties of the scraper under torsion. At first, the process of the scraper conveyor passing through the curved section of the conveyor is analyzed, and then on this basis, the bending moment and the addition
Externí odkaz:
https://doaj.org/article/8aaea48e0bb640f8aa19d4d32c487a10
Publikováno v:
Jixie qiangdu, Vol 44, Pp 394-401 (2022)
Abstact Taking into account the long-distance and heavy-duty working characteristics of the scraper conveyor, the harsh working environment and complex working conditions often lead to jams and chain broken accidents. In order to study the transient
Externí odkaz:
https://doaj.org/article/924c81e01e2b4e3fa710264e5fff5d02
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 1, Pp 7-15 (2022)
The alternating measurement mode roadheader positioning technology will produce cumulative measurement error in the process of multiple alternating measurement, which will affect the positioning precision of roadheader. At present, the research mainl
Externí odkaz:
https://doaj.org/article/e33cea7519c04eea922e69f01c68f92f
Publikováno v:
Jixie qiangdu, Vol 42, Pp 146-153 (2020)
A parameters optimization of a hydraulic support column remanufacturing method was studied in this paper. The mathematical model of the radial shrinkage of the coating was established by using the constitutive equation,the geometric equation and the
Externí odkaz:
https://doaj.org/article/afe7024312c5448790c0ba9fefd68162
Publikováno v:
Jixie qiangdu, Vol 41, Pp 458-462 (2019)
The abrasion of the shaft end of the cone bit is caused by many factors, In this paper, we mainly analyze the effect of the longitudinal vibration characteristic of the drill bit on the end of the tooth wheel on the wear and mechanism of the tooth ax
Externí odkaz:
https://doaj.org/article/5d5fab85fb5a4c019cd2abe4a35ae31c
Publikováno v:
Jixie qiangdu, Vol 41, Pp 964-970 (2019)
In order to prevent the failure of chain flat ring fatigue failure of scraper conveyor chain, the paper based on the field test data to predict the fatigue life of the chain. Taking the 38 × 137 mmC grade chain as the research object, firstly, the t
Externí odkaz:
https://doaj.org/article/9ebfc1633bc94ab284afa34026a79467
Publikováno v:
Jixie qiangdu, Vol 41, Pp 1112-1117 (2019)
A stepping-type excavation,support and anchor combined unit in a full-mechanized excavation roadway was designed. The structure and the work principle of the unit were presented. The dynamic model of multi-degree of vibration system was established b
Externí odkaz:
https://doaj.org/article/335e5033e08a48d4b7adf07f9c2f7fc1
Publikováno v:
Jixie qiangdu, Vol 41, Pp 1400-1407 (2019)
To solve the problem of stubborn balance,improve the efficiency of tunneling,the design of advanced support equipment of arch. In order to study the structural stability of the device,the multi-point distributed static model of the advanced support r
Externí odkaz:
https://doaj.org/article/6a3517890cae454cbf14d407ad04b90a