本文選題：急傾斜液壓支架 + 防滑防倒穩(wěn)定性�。� 參考：《西安科技大學》2015年碩士論文

【摘要】：液壓支架作為煤礦井下主要的支護設(shè)備,是煤礦安全開采的保證。急傾斜煤層綜采工作面液壓支架因煤層傾斜角度大和地質(zhì)條件復(fù)雜,分析液壓支架防滑、防倒穩(wěn)定性,分析銷軸連接孔軸間隙對液壓支架穩(wěn)定性的影響,以及支架有限元分析和運動學仿真,為設(shè)計急傾斜液壓支架并保證其穩(wěn)定性提供了可靠的理論依據(jù),對急傾斜煤層的安全生產(chǎn)和采煤效率的提高有重要意義。本論文以某煤礦急傾斜綜采放頂煤工作面液壓支架展開了研究。為了驗證液壓支架在工作面上的穩(wěn)定性,分別建立了液壓支架的三維實體模型,力學模型,運動仿真模型和有限元分析模型。首先根據(jù)支架在工作面上的受力情況,對支架進行防滑穩(wěn)定性和防倒穩(wěn)定性兩種失穩(wěn)情況力學分析計算,證明了液壓支架在74°傾角狀態(tài)的穩(wěn)定性是有保障的。然后分析了銷軸連接對液壓支架穩(wěn)定性的影響,從隔離腐蝕物質(zhì)和減小孔軸強度差兩方面,提出了在銷軸和支架孔連接處外面加一個保護套和對支架孔采用磨削淬火加工工藝兩個方法增加銷軸連接可靠性,從而增加液壓支架的穩(wěn)定性。其次用adams軟件對液壓支架進行運動仿真,驗證了支架頂梁前端的最大位移滿足設(shè)計要求。最后用ansys軟件對液壓支架進行有限元分析,進行內(nèi)加載和側(cè)向水平力外加載驗證支架強度,從而證明液壓支架的穩(wěn)定性。
[Abstract]:As the main supporting equipment in coal mine, hydraulic support is the guarantee of coal mine safe mining. Because of the large inclined angle of coal seam and the complex geological conditions, the hydraulic support in the fully-mechanized coal face of steeply inclined coal seam is analyzed for its anti-slip and anti-collapse stability, and the influence of the clearance of pin shaft connection hole on the stability of the hydraulic support is analyzed. The finite element analysis and kinematics simulation of the support provide a reliable theoretical basis for the design of steeply inclined hydraulic support and ensure its stability. It is of great significance to the safety production of steeply inclined coal seam and the improvement of coal mining efficiency. In this paper, the hydraulic support of a fully mechanized caving face in a coal mine is studied. In order to verify the stability of the hydraulic support in the working face, the three-dimensional solid model, mechanical model, motion simulation model and finite element analysis model of the hydraulic support were established respectively. Firstly, according to the stress condition of the support on the working face, the stability of the support in the state of 74 擄inclination is proved to be guaranteed by the mechanical analysis and calculation of the anti-slip stability and the anti-toppling stability of the support. Then, the influence of pin shaft connection on the stability of hydraulic support is analyzed, from the aspects of isolating corrosion material and reducing the strength difference of hole shaft, This paper presents two methods to increase the reliability of pin shaft connection and increase the stability of hydraulic support by adding a protective sleeve outside the connection of pin shaft and support hole and grinding quenching process for support hole. Secondly, the adams software is used to simulate the motion of the hydraulic support, which verifies that the maximum displacement of the front end of the support can meet the design requirements. Finally, the finite element analysis of the hydraulic support is carried out with ansys software, and the strength of the support is verified by internal loading and lateral horizontal force external loading, which proves the stability of the hydraulic support.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD355.4

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本文編號：1934600