• 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:
    A unitary hydraulic control device, especially for use with mining apparatus, has a main housing carrying replaceable individual valves arranged in bores. The valves are operated by tappets which engage on cams provided on one of three relatively rotatable coaxial parts forming a multi-part cam shaft. The rotatable parts have hand levers external to the housing permitting the parts to be partly-rotated in either direction, together or separately, to operate selected groups of valves. Each rotatable part has its own "dead man's" handle safety or restoring system which automatically return the rotatable part to a neutral position upon release of its hand lever and after part-rotation in either direction. Each such system is composed of a pair of spring-loaded plungers guided in casings fitted in the housing and engaging on diametrically-opposed cam surfaces of an additional cam on the associated rotatable cam shaft part.
    公开号:SU871743A3
    申请号:SU792845242
    申请日:1979-11-28
    公开日:1981-10-07
    发明作者:Вейрих Вальтер
    申请人:Геверкшафт Эйзенхютте Вестфалия (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to distribution devices and can be used in hydraulic mechanized lining of mines. Distributor valves of this type are known, in which a group of valves is controlled by a hand through a camshaft connecting several working cylinders separately or in groups with a hydraulic, pressure pump or recirculation 1. The closest to the invention of the known is which can be used in mechanized roof supports, including travel valves connected in one control unit with a cam shaft, a control handle and a return device 2. Serving simultaneously for rotation of the switching part of the rotating spool and for opening the shut-off valve in it, the handle has two control cams, which are made so that when one cam is used, the handle returns the valve to its original position when released, while when using the second cam, the shut-off valve remains in its open position even when the handle is released. In this case, in the control device, made in the form of a rotating spool, the return device consists of a cam located on the handle, which interacts with a shut-off valve operated by means of a pusher, a rotating gold box. However, such a device does not provide sufficiently reliable operation of the distribution valve. The aim of the invention is to increase the Hc1 reliability of the operation of the distribution valve when all imexchis are taken into account in the underground control of hydraulic mechanized supports of requirements when a reliably operating safety circuit is activated. To achieve the goal, the cam shaft is made up of coaxially arranged parts with handles, each part of the cam shaft being connected to its cam and return device with the possibility of their mutual rotation. The return device can be made in the form of a sleeve with a spring-loaded pusher installed with the possibility of interaction
    with cams. the cam may have two diametrically arranged surfaces for interacting with the pushers of the return device. The shaft may have discs between which the cams are located. Valves can be positioned at an angle to each other.
    In such a design of the dispensing valve, the functional elements of the safety circuit lie inside the control unit / and one or several cam elements are located on the cam shaft. For cam elements, it is advisable to use small cam discs, which can simultaneously perform the function of remote discs to hold the cam elements or cam discs apart. The cam followers interacting with cam elements may be located in small openings of the control unit.
    It is advisable to place the spring devices with pushers in the housing, which can be connected to the control unit. It is recommended on the cam element of the safety circuit to place two cam diametrically arranged diametrically to each other, with which the returning body interacts, for example, the loaded cam.
    In order to control several hydraulic working cylinders separately or in groups, as is often required in hydraulic mechanical support, the proposed control valve has a correspondingly large number of control cams of the directional valves. For this, the camshaft is made integral, so that there are at least two coaxially positioned coaxially positioned each other by means of the cam's own knob elements, through which the attached valves are controlled. In this case, it is advisable to connect each cam-shaft element with the cam link and the return device. In this case, the cam shaft consists of a central shaft, on which at least one cam element configured as a hollow shaft is located so that it can be rotated. The proposed control valve preferably has three cam elements, one of which forms a central shaft / on which another is rotatably arranged as a hollow shaft, while the third element is rotatably mounted on a hollow shaft. rotate by means of its own handle. In this case, the handles are expediently located on the same side of the distribution valve, tightly to each other so that they can be controlled alternately separately or together.
    According to another form. The performance of the proposed control valve, the directional valves are located on the control unit in two mutually arranged at an angle (preferably under the right-angle) planes. In this case, all valves can be switched by rotating a camshaft consisting of one or several parts at a comparatively small angle, for example, in 90®. Thus, the handles have a small switching path. This makes it possible to use an extremely simple implementation of the return device, since the camshaft should at most be moved an angle of about 4
    ; The cavity of the control valve in which the camshaft is installed / connected to a recirculation pipe common to all hydraulic cylinders, so that it is filled and hydraulic fluid flows through it
    FIG. 1 depicts the proposed
    front view distribution valve; in fig. 2 - distribution valve, longitudinal section; in fig. 3-way valve / cross section.
    The distribution valve 1 forms the central control unit of the hydraulic mechanized roof support, for example a section of metal or shield support. In distribution valve 0, valve 1 is combined with eight travel valves 2. Four travel valves 2 are located in a common plane, while the remaining valves 2 located in the second common plane / 5 which is offset by 90 ° relative to the plane of the first valves 2. All directional valves 2 are identical. They are located in the openings 3 of the control unit 4. These valves are made of highly replaceable cartridges and have pushers 5. "
    权利要求:
    Claims (5)
    [1]
    The adjustment of the valves 2 is carried out by means of rotatably arranged, consisting of several parts of the camshaft. The camshaft is made composite and contains a solid shaft 6, one end 7 of which is placed on one side of the control unit with the possibility of rotation, and its other end 8 is protruding on the opposite side of the control unit and has a handle 9. On the central shaft is coaxial The hollow shaft 10 is rotatably disposed, which is also the 5th part of the camshaft, with its end 11 protruding from the control unit and here has a handle 9. On the voidings cage 10 there is a bearing sleeve 12, also part of the camshaft located rotatably in the casing 13 of the control unit 4, and on the protruding control unit end 14 it has a handle 9. The knobs 9 are located on the same side of the distribution valve tightly to each other, so that they can be controlled alternately separately or together. As shown in FIG. 1, the handles 9 can also be provided with extensions 15. Thus, by means of the handles 9 located at the ends 8 and 11, it can be separately or simultaneously rotated around the joint axis of the cam Scuia with the joint parts b, 10, 12. On the camshaft there are four cam discs 16 rigidly arranged, two of which are located tightly to each other. Each cam disc 16 has a switching cam, which interacts with the pusher 5 of the corresponding flow valve. Two adjacent cam discs 16 adjust respectively two cm-wide relative to each other on the pilot valves. By rotating the shaft 6 from the zero position in one direction or another, the four valves 2 can be adjusted to. For example, to regulate the movement associated with the support section of the shifter cylinder. On the hollow shaft 10, which is the second part of the camshaft, two cam discs 16 are tightly attached to each other, by means of which valves 2 are adjusted to, for example, unload and load one row of racks of hydraulic power support. The third part 12 vgsha has no special cam discs. Here the cams 17 are made intact. Equating this part 12 of the shaft in one direction or another regulates two valves 2 in order to relieve the load from the second row of racks of the hydraulic mechanized roof supports or to load it. Each of these parts of the shaft has its own return device. It consists of a cam 18 rigidly mounted on the shaft 6. As shown in FIG. 2, the cam 18 is located as a remote disk between the pairs of cam discs 16. The cam 18 has diametrically opposite sides along one surface 19 on which the pusher 20, which enters into the opening 21 of the control unit, rests with its end. There are sleeves on the outside of the control unit. 22, for example, screwed with control unit 4. Pushers 20 are mounted in sleeves 22 and pressed with coil springs 23 supported on one side against collar 24, pushers and on the other hand on Vikg 25 of guillotine 22 serving simultaneously to guide pusher 20. FIG. 3 shows the functional parts of the return device in the zero position of the shaft 6. In the event that the shaft 6 is turned by the handle 9, for example, clockwise, then shown in FIG. 3, the pusher engages when the spring 23 is squeezed into the sleeve 22, while the other pusher remains fully in the extended position in which it rests with its collar 24 on the sleeve 22. In the case that the arms 9 are lowered in the extended position, then pushed The pusher 20, when exposed to the spring 23, brings the shaft 6 and thus the handle 9 back to the zero position. The same happens also if the shaft 6 rotates in the opposite direction. In this case, shown in FIG. 3 pusher 20 returns the shaft. Both other parts of the shafts 10 and 12 are given a corresponding return device. The return device of the bearing sleeve 12 has a cam 18 (FIG. 2) covering the hollow shaft 10, however, connected to it by the shaft part 12. Cams 18 also perform the function of remote discs (Fig. 2). The inner cavity 26, in which the three-piece 6, 10, 12 cam shaft with the cam elements of the return device is located, is connected to a recirculation pipeline common to all hydraulic cylinders and is thus filled with hydraulic fluid. The main connections, through which the control valve 4 is connected on the inlet side to the hydraulic pressure pipe and to the recirculation pipe, are not shown. Combining the control valves into one control unit and the above-described arrangement of the knobs allow for the selection of workflows and the subsequent movement of the securing section by a single manual operation. This is a significant simplification. In addition, with the described arrangement, there are short switching paths, since the knobs 9 should be rotated from the zero position by at least 45 to one side or the other to control the corresponding valves. The invention of the distribution valve mechanized support, including the flow
    valves connected in one control unit to the camshaft, control handle and return device, characterized in that, with reliable operation, the camshaft is made up of coaxially arranged parts with handles, each part of the camshaft connected to its cam and a return device with the possibility of their mutual rotation.
    [2]
    2. A valve according to Claim 1, characterized in that the return device is made in the form of sleeves with spring-loaded pushers that are interoperable
    with a cam.
    [3]
    3.Klapan Popp. 1 and 2, distinguished by the fact that the cam
    It has two diametrically arranged surfaces for interacting with the pushers of the return device.
    [4]
    4, The valve according to claims 1-3, which is based on the fact that the shaft has cam discs between which the cams are located,
    [5]
    5. The valve on the PP. 1-4, characterized in that the valves are located in planes transverse to the shaft axis.
    Sources of information taken into account in the examination
    1. The patent of Germany No. 1550310,
    cl. E 21 O 23/26, published. 1970.
    2. Accepted for the Federal Republic of Germany No. 2049869, cl. E 21 O 23/26, published. 1972 (prototype).
    // - 2J g
    2f 0 10 Iff f8 b
     ..//
    类似技术:
    公开号 | 公开日 | 专利标题
    SU871743A3|1981-10-07|Distributive valve of mechanized support
    AU617649B2|1991-12-05|Fluid valve structures
    US2478702A|1949-08-09|Flow control system
    DK160576B|1991-03-25|CONTROL VALVE WITH BUILT-IN PASS, TROUBLESHOOTING AND CUT OFF
    US2387007A|1945-10-16|Valve actuating system
    PL113874B1|1981-01-31|Arrangement for hydraulically controlling mine roof supports
    US3490495A|1970-01-20|Hydraulic selector valves
    US5706712A|1998-01-13|Adjusting drive for transmission of motorized vehicles
    US3286733A|1966-11-22|Irrigation controller
    US2552848A|1951-05-15|Hydraulic control valve
    US2376022A|1945-05-15|Plural-way cock
    US4185660A|1980-01-29|Directional control valve
    US2954051A|1960-09-27|Control valve for multiple valve banks
    US2820372A|1958-01-21|Control valve for fluid pressure remote control systems
    US5558050A|1996-09-24|Arrangement for the control of valve timing in a combustion engine
    EP1212231B1|2003-03-26|Hydraulic steering device with change of transmission ratio
    US2460633A|1949-02-01|Valve means
    DE19723219A1|1998-12-10|Hydraulic multi-way valve, in particular steering type selector valve for multi-axle steered vehicles
    GB2168789A|1986-06-25|Poppet valve
    SU1400513A3|1988-05-30|Distributive valve for hydraulic systems of mining support with safety arrangement
    US3575201A|1971-04-20|Multiple hydraulic valve unit
    US4274443A|1981-06-23|Directional control valve
    SU1583623A1|1990-08-07|Device for remote control of support unit
    GB2118689A|1983-11-02|Improvements in hydraulic control devices for use with mining apparatus
    US2545529A|1951-03-20|Selector valve
    同族专利:
    公开号 | 公开日
    ES486504A1|1980-06-16|
    PL123230B1|1982-09-30|
    PL220031A1|1980-07-14|
    GB2037858B|1982-11-17|
    CS230566B2|1984-08-13|
    BE880264A|1980-03-17|
    FR2443007B1|1982-08-13|
    GB2037858A|1980-07-16|
    DE2851937C2|1986-05-28|
    US4310027A|1982-01-12|
    FR2443007A1|1980-06-27|
    DE2851937A1|1980-06-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2040990A|1930-05-31|1936-05-19|Cincinnati Grinders Inc|Hydraulic control mechanism|
    US2276433A|1940-07-03|1942-03-17|Alton W Sturman|Valve structure|
    US2592906A|1945-11-05|1952-04-15|Deere Mfg Co|Speed control valve for hydraulic mechanism|
    US2574624A|1948-06-25|1951-11-13|John D Cochin|Control valve mechanism|
    US2766772A|1952-04-17|1956-10-16|Carbonic Dispenser Inc|Valve apparatus|
    US2897891A|1953-03-10|1959-08-04|Clayton Mark & Company|Valve for water softening|
    US2898938A|1956-09-25|1959-08-11|Dombre Pierre|Mixing valves|
    US3390921A|1966-08-17|1968-07-02|Berg Mfg & Sales Co|Modulating spring brake application and release valve|
    US3469461A|1967-05-11|1969-09-30|Mac Valves Inc|Cam operator|
    DE2049869C3|1970-10-10|1984-11-08|Gewerkschaft Eisenhütte Westfalia, 4670 Lünen|Control device, especially for hydraulic pit support teams|
    BE794193A|1972-03-16|1973-05-16|Gewerk Eisenhuette Westfalia|SEQUENTIAL CONTROL SYSTEM FOR AUTOMATIC RIPING OF A GROUP OF SUPPORT ELEMENTS|
    SE7400480L|1974-01-15|1975-07-16|Ifoe Ab|
    DE2605758B1|1976-02-13|1977-07-21|Hemscheidt Maschf Hermann|CONTROL VALVE FOR HYDRAULICALLY STEPPING STRUCTURE|DE3214920C2|1982-04-22|1990-08-30|Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De|
    JPH075099B2|1983-02-21|1995-01-25|株式会社小松製作所|Steering control valve device for tracked vehicle|
    DE3315313C2|1983-04-27|1987-06-25|Gewerkschaft Eisenhuette Westfalia Gmbh, 4670 Luenen, De|
    GB2142074B|1983-06-21|1987-04-23|Dobson Park Ind|Control of mine roof supports|
    GB2188703B|1986-04-03|1990-03-21|Dobson Park Ind|Valves|
    DE3637349A1|1986-11-03|1988-05-11|Ecker Gmbh Maschbau|Hydraulic control unit, in particular for adjacent control in self-advancing support underground|
    AT399026B|1992-10-13|1995-03-27|Avl Verbrennungskraft Messtech|DEVICE FOR CONTROLLING AND / OR MOVING FLUIDS|
    USD784149S1|2014-09-25|2017-04-18|DC Brands B.V.|Bottle|
    DE102016201246A1|2016-01-28|2017-08-03|Mahle International Gmbh|Device for distributing a fluid to at least two fluid channels|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2851937A|DE2851937C2|1978-12-01|1978-12-01|Control valve, especially for hydraulic support in mining operations|
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