EP3155268A1

EP3155268A1 - Connecting apparatus

Info

Publication number: EP3155268A1
Application number: EP15727878.9A
Authority: EP
Inventors: Sascha Alexander Biwersi; Marcus Hettiger; Christoph Stönner
Original assignee: Hydac Technology GmbH
Current assignee: Hydac Technology GmbH
Priority date: 2014-06-13
Filing date: 2015-06-02
Publication date: 2017-04-19
Anticipated expiration: 2035-06-02
Also published as: US20170122344A1; WO2015188920A1; CN206360957U; US10024343B2; EP3155268B1; DE102014008648A1

Abstract

The invention relates to a connecting apparatus, provided for fluid-conducting connection to at least one main component (10), which component has a plurality of mutually adjacent fluid passage points (Ρ'1, Ρ'2, P'3, P'n.....P'x), said connecting apparatus having a main body (12), which serves to control a fluid flow by means of at least one functional component (14), such as a valve device; a plurality of further fluid passage points (P1, P2, P3, Pn.....Px), which can be connected to each other in a fluid-conducting manner via the functional component (14) with assignable fluid passage points in the main component (10); and at least one shut-off part, which shuts off the respective fluid passage point (P'2, P'3, P'n.....P'x-1) in the main component (10) and/or in the main body, said fluid passage point remaining unaffected by the functional component (14). Said connecting apparatus is characterised in that there is in each case a fluid-conducting connection line (30, 32) inside the main body (12) between the further fluid passage points (P1, P2, P3, Pn.....Px) and the functional component (14), which fluid-conducting connection line can be shut off by a separate shut-off part, as long as the associated connection to the functional component (14) remains unused.

Description

connection device

The invention relates to a connection device, provided for the fluid-carrying connection to at least one basic component, which has a plurality of adjacent fluid passage points, with

a base body which serves to control a fluid flow via at least one functional component, such as a valve device, a plurality of further fluid passage points, which can be connected to each other with assignable fluid passage points in the basic component fluid-conducting via the functional component, and

at least one blocking part, which shuts off the respective fluid passage point in the basic component and / or in the main body, of the

Functional component remains unaffected.

The pertinent solution in the prior art is explained in more detail in the specific description. In the known solution shown, it is always possible to connect the functional component, for example in the form of a 2/2-way valve, both on its input side and on its output side fluid carrying always only with a respective assignable fluid passage point in the basic component. In order nevertheless to be able to provide a certain degree of modularity in the sense of a so-called LS directional control valve construction kit for mobile working machines, however, one has in the fluid-supplying basic component several, mutually adjacent or group-related fluid passages provided, which then one has to combine depending on the number of controlled or to be controlled fluid passage points in the base member, each with a separate body, which preferably always has the same functional component and in Area of its output always the same fluid-carrying line to the last fluid passage point in the base member has; but solely for the respectively to be controlled fluid passage point on the input side of the functional component requires a separate fluid line, which is so far not universally applicable, but is always associated with only one particular fluid passage in the base member. In simple terms, if one wanted to master four fluid passages in the basic component by means of the main body with a functional component, then four different basic bodies would have to be made available, each with its own fluid supply line on the input side of the functional component, if necessary to drive one of the four fluid passage points in the basic component fluidly. The remaining remaining open passage or fluid connections in the base member, which are not required, are then covered by the housing wall of the Grundkör- pers, at which point preferably a seal is arranged to close in the region of the locking member assembly a sealing, reliable conclusion to the environment to reach.

Based on this prior art, the invention has the object, while maintaining their advantages, such as to provide a secure connection geometry, the known solution to further improve that in a cost effective and reliable manner, the modularity of the overall connection device is increased. A related object solves a connection device with the features of patent claim 1 in its entirety. Characterized in that according to the characterizing part of claim 1 within the body between the other fluid passage points and the functional component in each case a fluid-carrying connection line which can be shut off by a separate locking part, provided that the pertinent connection to the functional component unused remains, can individually be assigned to each further fluid passage point in the main body a blocking part, so that one can freely release or block that fluid-carrying connection line in the main body, which is just needed or not required to the functional component with the assignable fluidversorgenden Fluid passage point in the basic component to connect functionally reliable. This technical solution has no equivalent in the prior art and it is clear that with only one type of body a variety of connection geometries can be controlled in a functionally reliable manner with a minimum number of necessary components, which helps reduce the cost of the solution.

By preferably in the respective strands of unneeded connecting lines insertable locking parts, preferably designed in the manner of so-called. Ball Expanders, the respectively not required connection line in the main body with the functional component can be securely locked and in view of the produced sealing connection Depending on the purposes for which the connection device according to the invention is to be used, additional sealing devices, such as O-seals, which are fundamentally susceptible to failure, can be drawn on the side of the base body, which in turn helps to reduce costs.

The connection device solution according to the invention is particularly suitable for controlling channels and channel connections, preferably in the form of control lines, for example in the form of so-called LS lines in control blocks of mobile equipment and machines, which are quite well charged with pressures up to about 400 bar. The on the Output side of the functional component arranged connecting strand as part of a connecting line may be provided as a direct tank connection to the base member; However, it can also serve as a continu- ous control line in the high-pressure area, provided that several connection devices and their components for functional groups are clearly put together.

Both the basic component and the basic body are preferably designed in the manner of valve or flange blocks, which can be connected to each other in a detachable manner, for example by a screw connection.

The subject matter of the invention is also a system consisting of a basic body which is preferably designed as an equivalent component and a basic component, as described in more detail above.

The solution according to the invention is explained in more detail below with reference to the drawing. The type of hydraulic block diagrams showing connection solutions as they are shown in the prior art;

4 and 5 comparable to the block diagrams of Figures 1 and 2, the connecting device according to the invention with basic use variants ..;

3 is a sectional view of a detail of a connection solution shown in the prior art; 6 similar to the sectional view of FIG. 3, a connection solution according to the invention and Fig. 7 in plan view, a known per se basic component with several adjacent fluid passage points.

Figures 1 and 2 show in the manner of hydraulic block diagrams total system connection solutions, as shown in the prior art. The connecting device shown is provided for the fluid-carrying connection to at least one basic component 10, which has a plurality of mutually adjacent fluid passage points ΡΊ, P'2, P ⁷ 3, P'n... P'x. In addition to the basic component 10, the connecting device has a base body 12 which has at least one functional component 14 for actuating a fluid flow to be guided. The functional component 14 may for example consist of a valve device, preferably in the form of a 2/2-way valve; also in the form of a switching valve or from another valve device or from another hydraulic functional group, such as a diaphragm, throttle or the like. According to the illustration according to FIG. 1, the base body 12 also has two further fluid passage points Pi and Px, which communicate with the correspondingly assigned fluid passage points ΡΊ and P ' _x in FIG

Basic component 10 are fluidly connected via the functional component 14 with each other. Furthermore, a blocking part 16 is present (see also FIG. 3), which shuts off the respective fluid passage point P'2, P'3, P'n... PVi in the basic component 10, so that the pertinent passage points from the functional component 14 unaffected.

Both basic component 10 and basic body 12 are designed in the manner of valve or flange blocks, which can be connected together in a flange to form an overall system. In the respectively connected state according to the illustrations according to FIGS. 1 to 3, the lower housing wall 18 of the flange-type main body 12 forms the blocking part 16, which so far covers the fluid passage points P'2, P'3, P'n ... P'x i in a blocking manner. Furthermore, a fluid-conducting connection according to the illustrations according to FIGS. 1 and 3 is produced between the fluid passage point ΡΊ in the base component 10 and the further fluid passage point P1 in the base body 12. For a sealing final connection between the base member 10 and base body 12 in the area of the effective fluid passage points ΡΊ and P1 and for the shut-off fluid passage points P'2, P'3, P'n ... P'x-i are connected to the These radial fluid passages of the base member 10 radial Extensions 20 provided which allow the insertion of a sealant, preferably in the form of an O-ring seal 22, wherein the respective O-ring 22 is inserted before the flange-like connection between the body 12 and the base member 10th is made. The respective sealing means thus opens in the form of the O-sealing ring 22 with at least part of its overhead outer contour on a flange side in the form of the lower housing wall 18 of the base body 12 in the region of the assignable, further fluid passage points ΡΊ, P'2, P'3, P'n ... P'x in a connected state of the base body 12 and base member 10 and is in sealing contact with this wall 18.

As FIG. 2 illustrates in particular, in the known solution, for each possible fluid passage point to be controlled in the basic component 10, an independent basic body 12 is provided, which covers the pertinent fluid passage point. Thus, FIG. 2 shows, from left to right, four different base bodies 12 with functional components 14, which each of the connection geometry on the input side 24 of the functional component 14, the assignable pairs of fluid passage points Pi, ΡΊ; P2, P'2; P3, P'3 and Pn, P'n drives. Only on the output side 26 of the functional component 14 does the respective further fluid passage point Px of the main body 1 2 open into the assignable fluid passage point P'x in the basic component 10. In place of the passage Px, P'x could also a the other passage on the output side are selected such as a combination Px-i / P _'x -i. According to the illustration according to FIG. 2, a total of four different basic bodies 1 2 would therefore be necessary for driving four input-side fluid passage points ΡΊ, ΡΊ, P'3 and P'n, which are all similar to me and insofar are also provided in FIG. 2 with the same reference numerals, but still differ in the configuration of the internal fluid-carrying piping and the connection geometry with respect to the other fluid passage points Pi, P2, P3, Pn ... Px.

2 can thus be implemented by four different Flanschblockbearbeitungen with different basic bodies 1 2, which is disadvantageous that a total of four different block variants depending on the purpose of production and logistics must be controlled and stored. This is to be avoided by means of the connection device solution according to the invention which is shown below, wherein for clarification it should be noted in advance that the respective addressed fluid passage points are not shown in principle, as shown in FIGS. 1, 2, 4 and 5, in linear arrangement one behind the other Characterize block diagram, but that they may well be distributed in G groups also randomly, as can be seen from Fig. 7 to the prior art, which shows in plan view the fluid connection image of a known basic component 10 with the fluid passage points ΡΊ, P. '2, P'3, P'n ... P'x. Furthermore, a part of the screw 28 is shown in FIG. 7, with which it is possible to connect the base member 10 with base 12 for abutment with each other via a screw, wherein the part of the screw 28 as shown in FIG Engagement threaded sections for not shown connecting screws concerns. In the device solution according to the invention according to the representations of Figures 4, 5 and 6, a preferably horizontally extending central line 30 is now provided in the base body 12, which replaces the plurality of previously differently arranged connection lines in the flange-like base body 12. In the central line 30, in turn, the functional component 14 is connected; 5 in the design of a 2/2-way switching valve is shown which can be controlled by means of an electromagnetic device, for example in the form of a proportional solenoid and in Fig. 5 in the through-connected Position is shown. Furthermore, individual line strands 32 are shown, which preferably produce the respectively shortest connection between the central line 30 and the respectively assignable further fluid passage points Pi, P2, P3, Pn ... Px and thereby preferably in the vertical direction in the central line 30th open out.

As can be seen in particular from the illustration in FIG. 4, therefore, 32 pairs of assignable fluid passage points Pi, über are on the central line 30 and the individual connected line strands; P2, P'2; P3, P'3; Pn, P n ... Px, P'x realized by base body 12 with basic component 10. If, as the illustration in FIG. 5 suggests, only one fluid passage point ΡΊ is to be connected to the further fluid passage point Pi, for example according to the leftmost illustration, individual blocking parts 16 are inserted separately from one another into the assignable line strands 32. so as to block the fluid passages P2, P3 and Pn. If a fluid-carrying passage on the fluid passage point pair P2, P'2 be realized, the locking parts 16 are inserted into the line strands 32 of Pi, P3 and Pn, etc., according to the other two embodiments of FIG Output side of the functional component 14, in turn, nothing changes and the output pair Px, P'x is retained. If, according to the illustration according to FIG. 4, no locking parts 16 are used, it is also possible in principle to connect all pairs of fluid passage points which are provided in a sketched manner. Also, for example, the pressure-carrying fluid connection does not need to pass through the fluid passage points P'3, P'n. , , PV1 to be realized by the base member 10; Rather, it is also possible, in terms of loops on the input and output side via pairs of fluid passage points of base member 10 and body 12 further connection concepts (not shown) to realize. In principle, it is also possible to supply pressurized fluid to the main body 12 via the fluid passage point pair P ' _x , Px, which then, after passing through the switched functional component, delivers the fluid stream in turn to the predominantly stored pairs of fluid passage points. A variety of possible variations are conceivable here with the connection concept according to the invention.

6 shows a connection solution, as shown for example in FIG. 5 on the far left, in which the passage point pair ΡΊ and Pi fluidly communicate with each other and the other fluid passage points P2, P3, Pn of a Blocking 16 are shut off. As shown in FIG. 6, the locking member 16 is realized in the manner of a sealing plug, preferably in the form of a ball expander. The expander concept according to the pressure or spreading principle uses a ball 34 as a spreading element, which is guided in a potty-shaped expandable receiving sleeve 36. By pressing the spherical expansion element 34 is a sleeve expansion with rückrollender clawing of the outer teeth 38, which surrounds the receiving sleeve 36 on the outer peripheral side, initiated with the surrounding wall 40, which surrounds the wiring harness 32, seen in the direction of Fig. 6, down in the further fluid passage P'2 opens. When the ball vertex disappears under the down towards protruding free sleeve top edge edge of the spreading process is considered to be finished. In the mentioned deformation of the receiving sleeve 36, the free inlet opening laces something at the edge and thus secures the spherical spreading 34 from loss.

The blocking element solution presented in FIG. 6 is self-sealing in itself, so that the already described and customary O-sealing rings 22 can also be dispensed with, at least in the area of the locking parts 16 used. If, according to the illustrations according to FIG. 5, the blocking part 16 is to be introduced at another location, that is to say within another connecting line, this can easily be achieved by simply placing the independent blocking part 16 as a repeat component in the desired wiring harness to be occupied 32 introduces. In order to achieve a defined contact of the respective blocking part 16 with the surrounding wall 40, a step-like widening 42 can be provided in the latter, at which the blocking part 16 can then be supported with its bottom side for the described spreading process.

With the solution according to the invention, it is therefore possible, as explained, to reliably control a multiplicity of possible fluid connections within the scope of connection to a basic component 10 with only one shape of the main body 12. Basically, as stated, that, if you want to accommodate sealing elements such as O-rings 22 in a flange, here the base member 10, the space available for this is usually very limited, which is still disadvantageous in the weight that for accommodating of the O-ring corresponding radial widening 20 are provided in order not to affect the fluid flow.

If, as in FIG. 3, the adjacently opposing flange surfaces of base component 10 and base body 12 are sealed to the outside by means of the axially acting O-sealing rings 22, then the larger the O-rings 22 are in diameter, the greater those forces - those who try to lift the flange 12 of the support plate of the base member 10 in fluid operation. For this reason, it is desirable to make the effective area of the O-rings 22 and thus the O-ring dimension itself as small as possible, which, however, has a detrimental effect on the sealing effect. Especially the sealing effect is an important aspect especially for signal lines, since even small leaks can distort pressures and thus cause control errors. Sealing in two directions of fluid flow should thus be ensured in a process-stable manner. Furthermore, the mechanical processing and assembly of the sealing element should be kept as simple as possible in order not to jeopardize the basically desired economic advantage. The mentioned ball expander solution for the realization of the respective blocking part 16 fulfills all of the above-indicated requirements. As described, the installation space required by the ball expander primarily requires only a small diameter shoulder 42, and the addressed sealing solution can physically be subjected to high pressures from two sides, without resulting in failure. Furthermore, the blocking part 16 in the form of the ball expander can be attached and mounted quickly and in a process-stable manner in the assignable line strands 32. This is not possible with the previous sealing solutions, as shown by way of example in FIG. 3.

By using a universally drilled block, here in the form of the base body 12, and some acting as locking members 16 sealing elements in the form of ball expanders can be implemented including possibly only two material numbers, depending on the block definition, a variety of hydraulic functionalities / logics. Since the mentioned block 12 is designed as a common part, the manufacturing costs fall significantly. Furthermore, fewer components must be logistically controlled due to the same part characteristics, and the assembly of the sealing plug 16 can be optimally coordinated production technology.

Claims

P a n t a n s p r e c h e

1 . Connecting device, provided for the fluid-carrying connection to at least one basic component (10), which has a plurality of adjacent fluid passage points (ΡΊ, P'2, P'3, P'n P'x), with

a base body (12) which serves to control a fluid flow via at least one functional component (14), such as a valve device,

- A plurality of further fluid passage points (Pi, P2, P3, Pn Px), which are fluid-connectable with assignable fluid passage points in the base member (10) via the functional component (14), and

- At least one blocking part (16), the respective fluid passage point (P'2, P'3, P'n P '* - i) in the base member (10) and / or in the

Blocking body, which remains unaffected by the functional component (14),

characterized in that within the base body (12) between the other fluid passage points (Pi, P2, P3, Pn Px) and the functional component (14) each have a fluid-carrying connection line (30, 32), which is a separate blocking part (16) can be shut off provided that the pertinent connection to the functional component (14) remains unused. 2. Connecting device according to claim 1, characterized in that the connecting lines (30, 32) via the respective further assignable fluid passage points (Pi, P2, P3, Pn Px) out to the outside of the base body (12) and that the respective locking part (16) from the outside via the further fluid passage points (Pi, P2, P3, Pn Px) in the connecting line (32), preferably permanent, can be used. Connecting device according to claim 1 or 2, characterized in that the respective blocking part (16) is formed from a sealing plug, preferably in the form of a ball expander.

Connecting device according to one of the preceding claims, characterized in that the base body (12) is designed in the manner of a flange block which can be flange-connected to the basic component (10) for an overall system.

Connecting device according to one of the preceding claims, characterized in that at each fluid passage point (ΡΊ, P'2, P'3, P'n... P'x) of the base member (10) is provided a radial broadening (20) is that allows the insertion of a sealant, preferably in the form of an O-ring seal (22), before the base body (12) and the base member (10) are interconnected.

Connecting device according to one of the preceding claims, characterized in that the respective sealing means (22) with at least a part of its outer contour on a flange side (18) of the base body (1 2) in the region of the assignable, further fluid passage point (Pi, P2, P3 , Pn P _x ) in the connected state of

Base body (12) and base member (10) opens and is in sealing contact with this.

Connecting device according to one of the preceding claims, characterized in that the respective connecting lines consist of a central line (30), in which the functional component (14) is connected, and individual line strands (32), preferably a shortest connection between this central line (30). 30) and the respectively assignable further fluid passage point (Pi, P2, P3, Pn ... Px) produce, preferably in a direction perpendicular to the central line (30). Connecting device according to one of the preceding claims, characterized in that only one fluid-carrying wiring harness (32) via the central line (30) on the input side (24) of the functional component (14) and again on the output side (26) of the functional component (14) only one fluid-carrying wiring harness (32) via the central line (30) is connected.

9. Connecting device according to one of the preceding claims,

characterized in that on the output side (26) of the functional component (14) in front of the last of the main body (12) leading out wiring harness (32), the functional component (14) in the central line (30) is connected.

Connecting device system, consisting of a preferably designed as an equivalent component body (12) and a base member (10), each according to one of the preceding claims.