西德大倾角煤层液压支架有三类:不与运输机连接的三架组、与运输机连接的支架、底座伸入运输机下的支架(以下分别简称三架组、运连支架和插腿支架)。这三类支架曾三足鼎立,而近几年新型的运连支架夺取了技术优势。目前西德的大倾角支架技术在世界上居领先地位。1974年Westerbalt矿首先使用三架组获得成功。由于工作面伪斜能大大提高安全性,1975年Erin矿试验了伪斜的冲击刨工作面三架组。改进后的G320系列三架组(图1)有一个带梯子的推移梁与中架铰接,并用油缸压住,两端与上、下架的推移装置连接,中、下架间有斜拉油缸。推移梁、顶梁侧护板、掩护梁侧护板形成支架侧面支撑和调向的三个支撑点、下架底座还有一调向梁。架间、组间、组间相错成台阶形,改变错距即可调整工作面伪斜角。支架老空侧成 There are three types of hydraulic supports for the large angle coal seam in West Germany: three groups not connected with the transporter, a bracket connected with the transporter, and a base extending into the support under the transporter (hereinafter referred to as three groups, transport bracket and pin bracket respectively). These three types of brackets had three pillars, and in recent years, the new type of brackets have won the technical advantages. At present, West Germany’s steep-angle bracket technology occupies the leading position in the world. The 1974 Westerbalt mine first used the three-team success. Since the working face pseudo-skew can greatly improve the safety, Erin mine in 1975 tested the pseudo-oblique impact planing face three groups. The improved G320 series of three groups (Figure 1) has a ladder with a moving beam hinged with the frame, and pressed with the cylinder, the two ends of the upper and lower frame of the device is connected to push, . Push the beam, beam side shields, shield beams side shield form the support side of the support and the three supporting points, the base frame also has a beam. Inter-frame, inter-group, inter-group phase into a wrong staircase, the wrong surface can be adjusted to adjust the pseudo-bevel. Scaffold into airspace into the old side