• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Hydraulic control means are provided for controlling an auxiliary shield positioned at one side of the roof shield of a mine roof support unit. The auxiliary shield is moved laterally of its roof shield by means of three hydraulic rams and the roof shield is supported by hydraulic props. The hydraulic control means comprises a control valve device and two pilot check valves. One pilot check valve is positioned in a line leading from the control valve device to two hydraulic rams which act in tandem. The other pilot check valve is positioned in a line leading from the control valve device to the other hydraulic ram. The pilot check valves are actuated in dependence upon the pressurization of the hydraulic props whereby the hydraulic rams are depressurised when the props are pressurized and vice versa.
    公开号:SU948296A3
    申请号:SU792790591
    申请日:1979-07-25
    公开日:1982-07-30
    发明作者:Вейрих Вальтер；Розенберг Гарри
    申请人:Геверкшафт Эйзенхютте Вестфалия (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to mining, in particular to control devices for overlapping intersectional Clearances.
    A hydraulic control device for closing the gap is known, having remotely controlled two-way valves and manually controlled valves. In this case, the cylinders are automatically connected to the high pressure line when the load is removed from the uprights of the adjacent lining section, and when recycled, the cylinders are reused.
    To ensure the alignment of the walking support, the cylinders are made with DOUBLE pistons, part of the cylindrical chambers of which are loaded with check valves, while the other part of the chambers are load-able to align manually controlled distribution valves 13
    The disadvantage of this device is that it uses double-piston cylinders, and the cylinders interacting with joint overlap of the slit can be pushed in or out, only joint due to
    which is possible only limited alignment-lining.
    It is also known a device for closing intersectional gaps in mechanized supports, including upper, an overlap installed with the possibility of extending parallel to the surface of the upper, double acting cylinders, for controlling of which are provided a node of distribution valves and a control valve assembly that controls the pressure of upsetting of racks, pressure and power lines, channels
    The lack of a known-device is limited by the ability to control when leveling the lining.
    The purpose of the invention is to enhance the ability to level off mechanized support by increasing the maneuverability of the sections.
    权利要求:
    Claims (2)
    [1]
    To achieve this goal, in device 25, the distribution valve assembly of each cylinder group is provided with a shut-off valve, the control cavity of which is connected by a channel to the cavity of the struts, and an outlet with an output channel of the distribution valve that controls the corresponding cylinder group. Fig. 1 schematically shows tr walking sections of lining with cylinders and cylinders arranged side by side; Fig. 2 is a diagram of the hydraulic control of the individual sections of the support. The tops 1 of the hydraulic sections located adjacent to each other are supported, for example, in the form of shch lining. The tops 1 are pressed to the side by 2 hydraulic stacks (not shown). Each upper side has On the lower side (arrow E, an overlap of 3, which consists of a leaf with a vertical shoulder 4 and a shoulder perpendicular to it 5. The shoulders 5 enter into the upper ones. They are located below to the closure with a narrow side the top of the box. Hydraulic cylinders 6-8 are located inside the box-shaped upper 1s, the piston rods of which are hingedly attached to the pulled or rod-shaped guides 10, which for their part are hingedly attached to the shoulder 4 in the direction of the recumbent side 3. Cylinders 6-8 are designed as double-acting cylinders: Guides 10 preferably consist of telescopic tubes with springs located in them, pressing floor 3 to the side surface of the top of the support section below each. the control unit of its overlap 3 slots (Fig. 2). The lining section has four hydraulic posts, namely two front 11 and two rear 12, as well as walking cylinders 13. The overlap at the top of this section of the support covers three cylinders 6-8, adjacentWishes Compatible Nome overlap 3. The management of this section of lining IME is manually adjustable control valves 14-21 which are connected on the input side with the extending longitudinally through the conduits stope R, and R. S. Pipeline P is a high pressure pipeline, pipeline S is a low pressure pipeline and Pipeline R is a drainage Pipeline S loads only the cylinders 13 of the individual support sections when the conveyor is moved (not shown). The distribution valve 14 of the distribution device at the outlet is connected through pipe 2 to the ring} gap of the cylinder 8. It serves to push this cylinder. The distribution valve 15 at the outlet is connected through pipe 23 to another ring gap of the cylinder 8. By adjusting the distribution valves 14 and 15 cylinder B can be actively pushed or protruded. Both distribution valves 16 # and 17 are connected through lines 24 and 25 to the spaces of both other cylinders 6 and 7, so that by adjusting these valves, cylinders 6 and 7 can be alternately slid in or out. The control valves 18 and 19 serve to control the walking cylinders 13, while the control valves 20 and 21 are designed to guide and tackle the struts 11 and 12. The control valves 15 and 17 are provided with a control valve 26, which is connected behind the corresponding control valve between its outlet and its inlet associated with the drain pipe R. The pistons of both control valves 26, which are made shut-off, are connected through a joint control pipeline 27 to a pipeline 28, which connects the distribution valve 21 to the pressure spaces of both racks 11 of the support sections. While in the pressure spaces 29 of the uprights 11 there is a precipitation pressure, i.e. if the pillars 11 are lowered, the pressure acts on the pistons of the control valves 26 so that the pipelines 23 and 25 leading to the cylinders are connected to the drain pipe R, Thus, the cylinders 6-8 are connected to a floating position in which they can be inserted without difficulty gat In the state of precipitation of the walking support, the overlap 3 can be pushed in. However, the spring devices located in the guides 10 press the overlaps 3 to the side surface of the adjacent top. The retracting of the cylinders is only possible if the force of the spring is overcome. When hauling and unloading racks 11 and 12 of the lining section, there is no pressure in the pressure spaces of the racks and thus the pipeline 28 and the associated pipeline 27, and the check valve 26 can be switched by spring force to the depicted stopping position in which the pipelines 23 and 25 are locked to the drain pipe R. This means that the cylinders 6-8 are fixed hydraulically and cannot be pushed when clamping them. The spring devices given to the cylinders, however, provide a certain displacement of the valve against the spring force, in that during subsequent movement section lining predotvrgitseno its jamming in the gap between adjacent sections of the support frame. In the tipping state, cylinders 6–8 can be alternately manually pushed in by means of distribution valves 14 .17, in order to align the embossed support section with respect to adjacent sections. This makes it possible, on the one hand, to pressure the cylinders b and 7, the other side is a cylinder 6 on one or the other side of the piston, so that the overlap is placed at an angle in the direction of travel. Thus, in the knocked out state, any necessary correction of the direction of the support sections can be made. When, after the termination of the displacement process by pushing the pillars 11 and 12, the support sections are deposited, the control valves 26 switch independently, so that the cylinders 6-8 switch to the floating position. The proposed device allows to extend the leveling support by adjusting the gaps in the cylinders. Apparatus of the Invention A device for blocking intersectional gaps in mechanized supports, including upper, overlapping, installed with the possibility of extending parallel to the surface of the upper, double acting cylinders, for controlling which are provided a control valve assembly and a control valve assembly controlling the pressure of upsetting pillars, pressure and power lines, canals, distinguished by the fact that, in order to expand the leveling capabilities of mechanized roof supports, the distribution valve assembly each cylinder group is provided with a shut-off valve, the control of which cavity is communicated by a channel from the stand cavity, and the output is connected to the output channel of the distribution valve controlling the corresponding cylinder group. Information sources taken into account during the examination 1. USSR author's certificate No. 637534, cl. E 21 B 23/00, 1975.
    [2]
    2. USSR author's certificate number 671744, cl. E 211 23/00, 1976.
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    同族专利:
    公开号 | 公开日
    DE2832875A1|1980-02-14|
    PL120422B1|1982-02-27|
    AU4913179A|1980-01-31|
    ES482866A1|1980-04-16|
    US4306822A|1981-12-22|
    GB2026582B|1982-05-12|
    FR2432084B1|1985-01-04|
    GB2026582A|1980-02-06|
    HU182485B|1984-01-30|
    FR2432084A1|1980-02-22|
    PL217375A1|1980-04-08|
    AU525349B2|1982-11-04|
    CS226710B2|1984-04-16|
    DE2832875C2|1985-11-07|
    ZA793836B|1980-08-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2032208C3|1970-06-30|1986-06-19|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|Hydraulically moving support frames|
    HU162717B|1971-03-05|1973-04-28|
    US3728863A|1971-09-14|1973-04-24|Gewerk Eisenhuette Westfalia|Mine roof support assemblies|
    US3837170A|1972-03-06|1974-09-24|Banyaszati Kutato Intezet|Sealing and position rectifying mechanism for shield supports|
    US4010618A|1974-01-19|1977-03-08|Dowty Mining Equipment Limited|Mine roof support|
    GB1504883A|1974-06-04|1978-03-22|Gullick Dobson Ltd|Mine roof supports|
    GB1516637A|1974-11-23|1978-07-05|Gullick Dobson Ltd|Mine roof supports|DE3110220C2|1981-03-17|1989-06-08|Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De|
    US4432673A|1981-04-25|1984-02-21|Dowty Mining Equipment Limited|Mine roof support|
    DE3237719C2|1982-10-12|1990-08-02|Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De|
    DE8318615U1|1983-06-28|1983-11-03|Klöckner-Becorit GmbH, 4620 Castrop-Rauxel|ALIGNMENT CYLINDER FOR SHIELD REMOVAL|
    DE102004017712B4|2003-05-14|2019-05-09|Tiefenbach Control Systems Gmbh|Hydraulic control for longwall construction|
    DE102011101087A1|2010-05-13|2012-03-01|Tiefenbach Control Systems Gmbh|Control device of a removal unit in the longwall of a mine|
    DE102010026977B4|2010-07-13|2016-06-02|Marco Systemanaslyse Und Entwicklung Gmbh|Method for shield control|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2832875A|DE2832875C2|1978-07-27|1978-07-27|Hydraulic control for a gap covering and alignment device arranged on one side on the cap or on the fracture shield of an extension member|
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