EP0854982B1 - Systeme de soupapes - Google Patents

Systeme de soupapes Download PDF

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Publication number
EP0854982B1
EP0854982B1 EP96945481A EP96945481A EP0854982B1 EP 0854982 B1 EP0854982 B1 EP 0854982B1 EP 96945481 A EP96945481 A EP 96945481A EP 96945481 A EP96945481 A EP 96945481A EP 0854982 B1 EP0854982 B1 EP 0854982B1
Authority
EP
European Patent Office
Prior art keywords
valve
conduit
block
control
block according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96945481A
Other languages
German (de)
English (en)
Other versions
EP0854982A2 (fr
Inventor
Hans Schwelm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Claas Industrietechnik GmbH
Original Assignee
Hans Schwelm
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Filing date
Publication date
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Publication of EP0854982A2 publication Critical patent/EP0854982A2/fr
Application granted granted Critical
Publication of EP0854982B1 publication Critical patent/EP0854982B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0807—Manifolds
    • F15B13/0814—Monoblock manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0832—Modular valves
    • F15B13/0835—Cartridge type valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0846—Electrical details
    • F15B13/086—Sensing means, e.g. pressure sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08—Assemblies of units, each for the control of a single servomotor only
    • F15B13/0803—Modular units
    • F15B13/0878—Assembly of modular units
    • F15B13/0885—Assembly of modular units using valves combined with other components
    • F15B13/0889—Valves combined with electrical components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
    • F15B2013/006—Modular components with multiple uses, e.g. kits for either normally-open or normally-closed valves, interchangeable or reprogrammable manifolds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • Y10T137/87201—Common to plural valve motor chambers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • Y10T137/87209—Electric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/877—With flow control means for branched passages
    • Y10T137/87885—Sectional block structure

Definitions

  • the present invention relates to a central block of a piloted valve and / or piston valve system, which has both a preferably standardized connection interface and a pilot valve interface for receiving a pilot valve, and which has a pump (P), a tank (T), has a first working line (A), a second working line (B), a first control line x and a second control line y, and in which four valve receptacles for accommodating one valve unit each (C 1 , C 2 , C 3 , C 4 ) are arranged are.
  • Valve systems with pilot operated seat and / or piston valves and with such a central block are for example from DE-OS 36 04 410, GB 2,212,220 A or EP 0 473 030 A1.
  • From DE-OS 36 04 410 is a hydraulic control block with a Pilot valve, a four-way valve, which is pilot-controlled by the pilot valve a pressure reducer, a check valve and a throttle check valve known.
  • Each of the aforementioned elements is in one independent housing block made of cast iron and only with appropriate Hydraulic lines connected to the other housing blocks.
  • valve units used in the corresponding provided in the central block Valve mounts can be used. These valves are then with an in Central block screwed lid fixed. At these valves can now Depending on the area of application, other components, such as a check valve, an electromagnetic proportional control or the like, and / or additional valves can be attached. Such valve units are called so-called cartridge (cartridge technology) called.
  • the bottom of the control block (DE 36 04 410), or the bottom of the Central block (EP 0 473 030) is designed as a connection interface and has a drilling pattern standardized according to DIN 24340, so that the control block or the Central block to almost every new and existing hydraulic system can be connected.
  • valves housed in the central block can be of various types be connected to each other.
  • the valves according to the laws logic through “and", "or” or “not and” links with each other connected.
  • connection of the valves is required for each application, so that for each application a separate central block with for each hydraulic circuit specific hydraulic connections are cast must, which has high manufacturing costs.
  • valve systems for example in plastic injection molding machines or with industrial robots it can happen that after some Another application is used at times, so that a modified one hydraulic circuit in the plastic injection machine or in the industrial robot must be used. In this case, the entire central block be replaced and replaced with a new one, so very much high material and assembly costs arise.
  • the present invention is based on the object a central block of a pilot operated seat and / or piston valve valve system to create, the universal for any number hydraulic circuits can be used and its hydraulic Circuit can be changed in a simple manner.
  • the invention proposes a central block of a pilot operated seat and / or piston valves To further develop valve systems of the type mentioned at the beginning, that the central block consists of a central block and two releasably on it attached valve blocks, with the middle block two valve sides with one valve block interface each to accept one valve block each comprises, and wherein each valve block has two valve seats, and that the control lines x and y are arranged such that each valve unit can be controlled via a pilot valve that can be attached to the pilot valve interface.
  • a central block trained according to this technical teaching has the advantage that only a single middle block needs to be manufactured, on which the for suitable valve block for the respective application with the associated Valve units (cartridges) is attached.
  • Such valve units are as Manufacturing-optimized screw-in valves (cartridge technology), one enable simple and quick installation. You can now use these valves other components, for example a check valve, an electromagnetic one Proportional control or the like, and / or further valves be attached.
  • pilot valve in one or more control components to disassemble, which are attached to the respective valve and this directly pilot.
  • the pilot valve is controlled by the control components replaced and the control lines are no longer arranged in the central block, but led directly from the control component to the valve.
  • a central block trained according to this technical teaching has the Advantage that with a single center block and only a few valve blocks almost any hydraulic circuit can be implemented. Hence they are Manufacturing and storage costs of the central block system according to the invention significantly lower, since the universally applicable middle and valve blocks in larger quantities can be manufactured and because of that for the specific Hydraulic switching of previously custom-made items is no longer required.
  • Another advantage of the device according to the invention is that the composed of two valve blocks and a middle block, according to the invention Central block can be made smaller than the known Central blocks. This makes the central block lighter and cheaper, because it uses less material. In addition, the smaller and lighter Central block easier to assemble.
  • valve blocks with the desired valve unit (s) (Cartridges) can be screwed to the center block.
  • Hydraulic circuit requirements can be met by replacing a or both valve blocks created a new hydraulic circuit be cast or assembled without a new central block needs, which leads to a significant cost reduction.
  • valve units C 1 , C 2 , C 3 , C 4 are connected to one another via the hydraulic lines in such a way that, by reversing the direction of flow in the hydraulic lines, the valve units C 1 , C 2 , C 3 , C 4 in the opposite direction be flowed through.
  • This achieves a universal construction of the middle block and the valve blocks, so that one and the same middle block can be used for many different hydraulic applications through the use of intelligent circuits.
  • the same central block can be used for different applications and different hydraulic circuits without having to be converted. This further reduces inventory and assembly costs. This also significantly reduces the downtime of the affected machine.
  • valve units controllable diagonally. This allows two valve units to be hydraulic be linked together.
  • the middle block is divided into two different sections.
  • the pump (P) and the tank line (T) are in a rear section of the middle block arranged while the working lines (A) and (B) in a front portion of the center block are arranged.
  • the manufacturing in particular, the casting of the middle block is easier because it is less complicated Casting cores can be used.
  • the pump (P), the tank (T) and / or the working lines (A, B) partly perpendicular and partly parallel to Connection side arranged.
  • Another advantage is that if necessary, subsequently Drilling additional channels further lines can be attached.
  • Yet another advantage is that the short distances and the mostly straight line routing almost no pressure loss and so good like no hysteresis occurs.
  • this is mainly as a fluid distributor used middle block constructed according to the invention so that it has a connection side, has a left, a right valve side and a pilot valve side.
  • a pump line (P) and a tank line (T) each lead from the Connection interface trained connection side to each of the two as Valve block interfaces trained valve sides, and the working line A leads from the connection interface to the left side of the valve, while the Working line B leads to the right side of the valve.
  • the two valve block interfaces of the center block on identical drilling patterns.
  • the valve blocks depending on the application, both on the left, can also be attached to the right side of the valve. This will make the number of the required valve blocks kept low, leading to another Cost reduction leads.
  • valve block interfaces have Point-symmetrically designed drilling patterns. This ensures that the valve blocks turn again after 180 ° about their central axis can be attached to the same side of the valve, reducing the number of required valve blocks can be further reduced.
  • valve block Fastening devices are provided with which further valves or others Components can be attached to the valve block. This is for example then advantageous if, in addition to the seat valve, a check valve, a displacement sensor and / or a second valve is to be attached.
  • Valve block designed as a two-way flow regulator
  • the other Valve block has a press safety control. Only through that Combination of the two valve blocks with the middle block results in a Injection system for a plastic machine.
  • the tank (T) and / or pump line (P) leading connecting lines within the valve block arranged so that they are outside the valve level in the center block interface flow while the others lead to the work lines Connection lines and the connection lines connecting the valves are arranged within the valve level.
  • the connecting lines Similar to the middle block, in two different levels or Sections located. The working lines are within the Valve level created so that on the one hand short distances arise and on the other hand little or sometimes no curvature is required, so that these connecting lines are easy to produce.
  • valve block of a pilot operated seat and / or piston valves Having proposed two or three way valve, in which in Valve block exactly one tank and one pump line is provided, the Tank line in the first valve holder and the pump line in the second Valve holder opens.
  • valve receptacles are via connecting lines either directly or via a work line A or B with each other are connected.
  • the valves are sometimes from the side or sometimes from Flows at the bottom, so that all possible with just a few valve blocks hydraulic circuits can be realized.
  • the connecting lines are over Supplementary lines can be connected to the desired work line, the supplementary lines can be retrofitted to the valve block.
  • valve blocks according to the invention it is possible with only a few Valve blocks that are inexpensively manufactured in large numbers can build any hydraulic circuit. This can either happen that a single valve block with suitable valve units (Cartridges) to a 2 or 3 way valve or that two valve blocks with corresponding valve units (cartridges) on one Middle block can be mounted to build a 3, 4 or 5 way valve.
  • suitable valve units Cartridges
  • two valve blocks with corresponding valve units Cartridges
  • valve blocks i.e. the hydraulic lines are closed on one side. Only when it is certain which line (P, T, A, B, x, y) is required for the respective circuit, this is opened, for example, by drilling.
  • FIG. 0 shows a schematic diagram of a hydraulic control block with a known hydraulic circuit with four valve units C 1 , C 2 , C 3 , C 4 .
  • the four valve units C 1 , C 2 , C 3 , C 4 are arranged in two valve blocks, which are fastened to a central block, as will be described in more detail below.
  • the hydraulic lines shown schematically in this schematic diagram are implemented in the middle block and in the valve blocks and create hydraulic connections between the individual valves.
  • FIGS. 1 and 2a to 2c An embodiment of a center block 2 according to the invention is shown in FIGS. 1 and 2a to 2c .
  • the middle block 2 comprises a connection side 4 , a left valve side 6 , a pilot valve side 8 and a right valve side 10 . All sides of the middle block 2 are provided with interfaces so that the middle block 2 can be connected to other components.
  • a connection interface 12 and to the pilot valve side 12 a pilot valve interface 13 is formed, both of which have a standardized hole pattern in accordance with DIN 24 340.
  • the center block 2 shown here is designed for a hydraulic system with a nominal size of 16 mm and can be connected to corresponding hydraulic systems without any problems thanks to its standardized connection interface 12 .
  • the center block 2 is designed for hydraulic systems with a nominal width of 6 mm, 10 mm, 25 mm, 32 mm or 50 mm and has the connection interface 12 corresponding to the respective nominal width in accordance with DIN 24 340.
  • the pilot valve interface 13 is the same for all embodiments and corresponds to the drilling pattern of DIN 24340 for NG 06.
  • the middle block 2 is used as a kind of fluid distributor, because with its pump line P , its tank line T , its two working lines A and B and the control lines x and y (not shown in FIG. 1), the one coming or flowing out of the corresponding lines of the hydraulic system becomes Fluid distributed to the respective valves.
  • the center block 2 additionally has control lines 14 through which a pilot valve attached to the pilot valve side 8 can control the other valves.
  • the lines within the middle block 2 are located in two different sections or layers: a front portion 16 and a rear portion 20.
  • the working lines A and B run, wherein the working line A, the connection interface 12 with a valve block interface 22 of the connects the left valve side 6 , while the working line B connects the connection interface 12 with the valve block interface 24 of the right valve side 10 .
  • the longitudinal axes of the respective line do not run in one plane, but slightly spaced apart.
  • the horizontal segments 25 of the hydraulic line P, T, A and B shown in dashed lines, are slightly offset with respect to the vertical segments P, T, A and B, but are located within the same section 16 and 20, respectively .
  • control lines 14 extend from the connection side 4 to the pilot valve side 8 and connect the right and left valve sides 6, 10 to the connection side 4 and the pilot valve side 8, but the control lines 14 do not run in one of the sections 16 or 20 , but rather they run irregularly within the middle block 2 .
  • both the tank T and the pump line P run. Both lines connect the connection side 4 to each of the two valve sides 6, 10 and, like the working lines A, B, run partly vertically and partly parallel to connection side 4 .
  • tank line T and the pump line P run substantially within the rear section 20 , the tank line T must be directed around the point at which it meets the pump line P so that it comes out of the rear section at this point 20 leads out a little.
  • valve block interface 22, 24 are identical, so that a valve block (not shown in FIG. 1) can be attached either to the left 6 or to the right valve side 10 .
  • control lines 14 are not shown in FIG. 1 in order to make the illustration clearer.
  • FIGS. 3 and 4 show two exemplary embodiments of a valve system according to the invention, in which the middle block 2 used as a fluid distributor is of identical design.
  • a valve block 70 is attached to both the right valve side 10 and the left valve side 6 , the valves 30 of which are designed as seat valves.
  • the valve blocks 70 are connected to a connecting line 72 such that the valves 30 are connected in series.
  • Electromagnetic proportional controls 31 are attached to the valves 30 in order to be able to open and close in a controlled manner.
  • the valve 30 together with the proportional control 31 is available as a prefabricated valve unit (cartridge). This cartridge then only needs to be inserted into the corresponding valve receptacle 34 .
  • a control block provided with such a directional valve comes without one Pilot valve and is mainly used in machine equipment hanging loads that must be very tight.
  • Such machine facilities are, for example, cranes, presses or fire ladders.
  • valve blocks 50 are attached to the middle block 2 , the valves 33 of which have a parallel connection.
  • a pilot valve 32 is connected to the pilot valve side 8 of the middle block 2 and controls the individual valves 33 mounted in the valve blocks 50 via the control lines 14 .
  • hydrostatically controlled check valves 35 are attached, so that each valve unit (cartridge) fitted in the valve receptacles 34, 36 consists of the valve 33 and the check valve 35 and forms a 2/2-way valve of a logic element in the basic function.
  • FIG. 3 and FIG. 4 are merely exemplary. Rather, it is entirely possible to attach any valves and valve blocks in any combination to the middle block 2 . This also includes the pilot valve 32 . It is also possible to attach two different valve blocks to the middle block 2 .
  • valve blocks 50, 60, 70, 80, 90, 100, 110, 120 are shown in FIGS. 5 to 12 , all of which are compatible with the middle block 2 . All valve blocks 50, 60, 70, 80, 90, 100, 110, 120 have two valve seats 34, 36 into which a valve can be inserted. This technique is well known as a cartridge technique. The control lines x, y are not shown here in order to make the illustration clearer.
  • each valve block 50, 60, 70, 80, 90, 100, 110, 120 has fastening devices, not shown, for receiving further valves, electromagnetic proportional controls, pickups, pilot control devices or the like.
  • valve seats 34, 36 are arranged axially parallel and are located in a valve plane 40 arranged perpendicular to the center block interface 38 .
  • the valve blocks 50, 60, 70, 80, 90, 100 have at least one pump 42 ' and one tank connection line 42 , which have a valve space 44 formed by the valve 30, 33 and the valve receptacle 34, 36 with the tank ( T ) or pump line ( P ) connects.
  • This pump and connection line 42, 42 ' is not located in the valve level 40 , but leads from the valve level 40 to a level corresponding to the rear section 20 .
  • the valve level 40 corresponds to the front section 16 .
  • the valve blocks 110 and 120 each have a pump and a tank connection line 42, 42 ' , which connects the valve tip to the tank ( T ) or pump line ( P ).
  • valve block 40 shown in FIG. 5 has a parallel connection of the valve units, the working lines 52, 54 leading from the valve receptacle 34, 36 to the middle block interface 38 being located within the valve level 40 .
  • valve block 60 shown in FIG. 6 the valve units are connected in parallel.
  • This valve block 60 corresponds to the valve block 50 shown in FIG. 5 , but additionally has a connecting line 62 from the outlet of the valve receptacle 34 into the valve chamber 46 of the valve receptacle 36 .
  • valve block 70 shown in FIG. 7 corresponds to the valve block 60 shown in FIG. 6 , except that the valve block 70 has no connection from the valve receptacle 34 to the working line A or B.
  • valve block 80 shown in FIG. 8 corresponds to the valve block 70 shown in FIG. 7 , but with a mirror-inverted design of the connecting lines 82 and 84 .
  • valve block 90 In the valve block 90 shown in FIG. 9 , the valve units are connected in series as in the valve blocks 70 and 80 , but the control in the valve block 90 takes place inversely in a valve unit.
  • the outputs of the valve receptacles 34 and 36 are connected by a working line 92 without a connection to a working line A or B.
  • the valve block 100 shown in FIG. 10 has two valve receptacles 34, 36 connected in parallel, which are connected to one another by a connecting line 102 .
  • valve block 110 shown in FIG. 11 corresponds to the valve block 70 shown in FIG. 7 , but the pump and tank lines 42 , 42 'lead to the tip of the valve and not to the valve chamber.
  • valve block 120 shown in FIG. 12 corresponds to the valve block 100 shown in FIG. 10 , but the pump / tank line 42 ′ leads to the tip of the valve and not to the valve chamber.
  • All valve blocks 50 to 120 shown in FIGS. 5 to 12 can be connected to the valve block location 22, 24 of the middle block 2 .
  • the line that is not required is sealed in such a way that the functioning of the hydraulic directional control valve as a whole is not impaired and that no hydraulic oil leaks out of the corresponding connection. This sealing takes place, for example, with a plug, closure or the like, not shown.
  • All valve blocks 50 to 120 are also equipped with control lines (x, y) 14 , as is shown by way of example in FIGS. 2 and 4 .
  • the control lines are not shown in the other figures in order to make the figure clearer.
  • any hydraulic circuit can be generated by combining the middle block 2 with one or two valve blocks 50 to 120 and suitable valve units installed in the valve receptacle 34, 36 .
  • the hydraulic directional control valve can be produced inexpensively in a modular design and there is the possibility of replacing the existing hydraulic circuit at any time with another hydraulic circuit by replacing individual valves and / or individual valve blocks with others.
  • this control block comprises a valve block 70 according to FIG. 7, to which two valve units, each with a valve 30 and a check valve 35, are attached.
  • the valve block 70 is attached to a connection plate 130 , to which the hydraulic lines P, T, A, x and y are also connected.
  • valve blocks 50, 60, 70, 80, 90, 100, 110, 120 can also be used to create a small control block.
  • the selection of the desired valve block depends only on the switching conditions required in the individual application, since all valve blocks according to one of FIGS. 5 to 12 are designed to be compatible with the connection plate 130 .
  • the pump line 42 ′ leads to the second valve receptacle 36 , while the tank line 42 is connected to the first valve receptacle 34 .
  • the embodiments shown in FIGS. 6 to 12 connect the valve receptacles 34, 36 directly to one another via connecting lines 52, 54, 62, 72, 84, 92, 102, 112, 122 .
  • the valve receptacles 34, 36 are connected to one another via the working line A or B.
  • supplementary lines are subsequently drilled into the valve block 60, 70, 80, 90, 100, 110, 120 , which the respective connection line 52, 54, 62, 72, 84, 92, 102, 112, 122 or the valve receptacle 34 , 36 connect to work line A or B.
  • the hydraulic lines are in the middle block and in the valve blocks designed so that when the flow direction is reversed flow through the valves in reverse, so that at existing blocks may only be changed by switching the Valves a new hydraulic circuit for a new application emerges.
  • control lines z 1 and z 2 are also provided in the central block in addition to the control lines x and y .
  • the latter serve to hydraulically connect the valves to external devices.
  • the middle block and in the valve blocks one or more hydraulic lines as Blind pockets designed, d. H. the corresponding hydraulic line is not a through line, but one-sided locked.
  • the pump, the tank, the working and the Control lines starting from the connection interface through the whole misplaced, but end shortly before each exit point, so that a thin Wall remains that is strong enough to withstand the operating pressure. Consequently
  • a middle block is created for any circuit can be used, because only when it is certain which cable is used, it is opened, in particular drilled out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Housings (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (16)

  1. Bloc central d'un système de valves équipé de valves pilotées à siège et/ou à piston ayant de préférence une interface de raccordement (12) standard ainsi qu'une interface pour robinet pilote (13) pour recevoir un robinet pilote (32), et pourvu d'une conduite de refoulement (P), d'une conduite citerne (T), d'une première conduite de travail (A), d'une seconde conduite de travail (B), d'une première conduite de contrôle x et d'une deuxième conduite de contrôle y, et dans lequel sont placés quatre trous de logement (34, 34') pour recevoir chacun une unité de valve (C1, C2, C3, C4),
    caractérisé en ce que
    le bloc central est composé d'un bloc central (2) et de deux blocs-valve (50, 60, 70, 80, 90, 100, 110, 120) amovibles fixés sur le bloc central, le bloc central (2) ayant deux côtés-valve (6, 10) pourvus chacun d'une interface pour bloc-valve (22, 24) permettant de recevoir chacun un bloc-valve (50, 60, 70, 80, 90, 100, 110, 120), chaque bloc-valve (50, 60, 70, 80, 90, 100, 110, 120) étant pourvu de deux trous de logement pour valve (34, 34') et que les conduites de contrôle x et y sont placées de façon à ce que chaque unité de valve (C1, C2, C3, C4) puisse être pilotée par un robinet pilote (32) qui peut être placé sur l'interface pour robinet pilote (13).
  2. Bloc central selon la revendication 1,
    caractérisé en ce que
    les unités de valve (C1, C2, C3, C4) sont reliées entre elles par les conduites hydrauliques de telle sorte que, en inversant le sens d'écoulement dans les conduites hydrauliques, le sens d'écoulement dans les unités de valve C1, C2, C3, C4 est également inversé.
  3. Bloc central selon une au moins des revendications précédentes,
    caractérisé en ce que
    les unités de valve (C1, C2, C3, C4) sont pilotables en diagonale.
  4. Bloc central selon une au moins des revendications précédentes,
    caractérisé en ce que
    la conduite de refoulement (P) et la conduite citerne (T) sont placées dans une section arrière (20) et que la première (A) et la. seconde conduite de travail (B) sont placées dans une section avant (16) du bloc central (2).
  5. Bloc central selon la revendication 4,
    caractérisé en ce que
    la conduite de refoulement (P), la conduite citerne (T) et/ou la conduite de travail (A, B) cheminent exclusivement en partie perpendiculairement et en partie parallèlement au côté de raccordement (4) du bloc central (2).
  6. Bloc central selon une au moins des revendications précédentes,
    caractérisé en ce que
    le bloc central (2) possède un côté de raccordement (4) pourvu d'une interface de raccordement (12) et relié hydrauliquement par la conduite de refoulement (P) et par la conduite citerne (T) à chaque côté de valve (6, 10) et par la première conduite de travail (A) à un premier côté-valve (6) et par la seconde conduite de travail (B) à l'autre côté-valve (10).
  7. Bloc central selon une au moins des revendications précédentes
    caractérisé en ce que
    les interfaces pour blocs-valve (22, 24) possèdent des schémas de perforation (26, 28) identiques.
  8. Bloc central selon une au moins des revendications précédentes
    caractérisé en ce que
    les interfaces pour blocs-valve (22, 24) possèdent des schémas de perforation centro-symétriques.
  9. Bloc central selon une au moins des revendications précédentes
    caractérisé en ce que
    la conduite de refoulement (P), la conduite citerne (T), la première conduite de travail (A), la. seconde conduite de travail (B), la première conduite de contrôle x et/ou la seconde conduite de contrôle y sont. conçues comme des "poches postiches".
  10. Bloc-valve d'une valve pilotée à deux ou trois canaux à siège et/ou à piston, plus particulièrement pour un bloc central selon une des revendications précédentes, avec un premier (34) et un deuxième trou de logement (36) pour recevoir chacun une unité de valve (C1, C2), et équipé de conduites de raccordement pour la conduite de refoulement (42') et pour la conduite citerne (42), d'une première conduite de contrôle x et d'une seconde conduite de contrôle y et
    caractérisé en ce que
    dans le bloc-valve (50, 60, 70, 80 , 90, 100, 110, 120) se trouvent exactement une conduite de raccordement pour la conduite citerne (42) et une conduite de raccordement pour la conduite de refoulement (42'), la conduite de raccordement pour la conduite citerne (42) débouchant dans le premier trou de logement de valve (34) et la conduite de raccordement pour la conduite de refoulement (42') débouchant dans le deuxième trou de logement de valve (36).
  11. Bloc-valve selon la revendication 10,
    caractérisé en ce que
    les unités de valve (C1, C2) sont reliées entre elles par les conduites hydrauliques de telle sorte qu'en inversant le sens d'écoulement dans les conduites hydrauliques, le sens d'écoulement dans les unités de valve (C1, C2) est également inversé.
  12. Bloc-valve selon une au moins des revendications 10 à 11,
    caractérisé en ce que
    les trous de logement de valve (34, 36) sont reliés entre eux soit directement soit par une conduite de travail A ou B au moyen de conduites de raccordement (52, 54, 62, 72, 84, 92, 102, 112, 122).
  13. Bloc-valve selon une au moins des revendications 10 à 12,
    caractérisé en ce que
    les conduites de raccordement (62, 72, 84, 92, 102, 112, 122) peuvent être reliées à la conduite de travail désirée par des conduites complémentaires, ces conduites complémentaires pouvant être montées ultérieurement au bloc-valve (60, 70, 80, 90, 100, 110, 120).
  14. Bloc-valve selon une au moins des revendications 10 à 13,
    caractérisé par
    un schéma de perforation selon lequel tous les branchements se trouvent alignés.
  15. Bloc-valve selon au moins une des revendications 10 à 14,
    caractérisé en ce que
    les conduites de refoulement (P), la conduite citerne (T), la première conduite de contrôle x et/ou la deuxième conduite de contrôle y sont conçues comme des "poches postiches".
  16. Utilisation d'un bloc-valve (50, 60, 70, 80, 90, 100, 110, 120) pourvu d'unités de valves (C1, C2) comme valve à deux ou trois canaux selon une au moins des revendications précédentes.
EP96945481A 1995-10-09 1996-10-03 Systeme de soupapes Expired - Lifetime EP0854982B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19537482 1995-10-09
DE19537482A DE19537482A1 (de) 1995-10-09 1995-10-09 Hydraulischer Steuerblock
PCT/DE1996/001909 WO1997013980A2 (fr) 1995-10-09 1996-10-03 Systeme de soupapes

Publications (2)

Publication Number Publication Date
EP0854982A2 EP0854982A2 (fr) 1998-07-29
EP0854982B1 true EP0854982B1 (fr) 2001-12-19

Family

ID=7774340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945481A Expired - Lifetime EP0854982B1 (fr) 1995-10-09 1996-10-03 Systeme de soupapes

Country Status (11)

Country Link
US (1) US5975134A (fr)
EP (1) EP0854982B1 (fr)
JP (1) JPH11509303A (fr)
CN (1) CN1092296C (fr)
CA (1) CA2218727C (fr)
CZ (1) CZ297720B6 (fr)
DE (2) DE19537482A1 (fr)
DK (1) DK0854982T3 (fr)
ES (1) ES2169277T3 (fr)
SK (1) SK284489B6 (fr)
WO (1) WO1997013980A2 (fr)

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Also Published As

Publication number Publication date
EP0854982A2 (fr) 1998-07-29
CA2218727C (fr) 2002-04-02
CN1199449A (zh) 1998-11-18
JPH11509303A (ja) 1999-08-17
CA2218727A1 (fr) 1997-04-17
ES2169277T3 (es) 2002-07-01
CN1092296C (zh) 2002-10-09
SK284489B6 (sk) 2005-04-01
DE19537482A1 (de) 1997-04-10
WO1997013980A3 (fr) 1997-07-03
WO1997013980A2 (fr) 1997-04-17
US5975134A (en) 1999-11-02
CZ73698A3 (cs) 2000-02-16
DK0854982T3 (da) 2002-03-25
SK33598A3 (en) 1998-07-08
DE59608520D1 (de) 2002-01-31
CZ297720B6 (cs) 2007-03-14

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