WO2014205955A1

WO2014205955A1 - Modular electro-hydraulic multiway valve employing novel combined slide valve and miniso cv

Info

Publication number: WO2014205955A1
Application number: PCT/CN2013/085005
Authority: WO
Inventors: 朱耀义; 黄人豪; 顾俊; 孙灿兴; 楼申琦
Original assignee: 杭州爱力领富科技有限公司; 上海人豪液压技术有限公司
Priority date: 2013-06-26
Filing date: 2013-10-11
Publication date: 2014-12-31
Also published as: CN103277541A; CN103277541B

Abstract

A modular electro-hydraulic multiway valve employing novel combined slide valve and MINISO CV, comprising a group of one combined three-way slide valve main stage (1-1-0) and a group of two MINISO CV valves main stage (2-1-1-0) with a cartridge valve seat having oil recharging and multi-pressure control functions both used to control two reversible controlled chambers of a double-acting hydraulic cylinder or hydraulic motor; the electro-hydraulic multiway valve can be applied in the fields of mobile hydraulics (MH) and industrial hydraulics (IH), applied to machinery, apparatus, and engineering consisting of electro-hydraulic control loops, and to scenarios where special requirements are imposed on environment or scenarios for special purposes. The present invention constructs a novel product solution in compliance with the new and diversified requirements of mobile machinery for hydraulic technology by using modular assembly and an open style according to user needs.

Description

Description Modular electro-hydraulic multi-way valve with new combined slide valve and MINISO CV

The invention relates to the technical field of hydraulic control systems, in particular to a modular electro-hydraulic multi-way control valve. BACKGROUND OF THE INVENTION The Chinese invention patent proposed by the applicant: 201210376577.3 "Modularization using a compact two-way cartridge valve Combined electric one-liquid multi-way valve system", the applicant has also proposed the Chinese invention patent: 201010280504 "Compact two-way cartridge valve with combined flange control cover" (compact two-way cartridge valve Called "MINISO CV"). Now it has innovated and proposed a new product scheme that uses MINISO CV to combine the new technology and combination of "electric one-liquid multi-way valve and system". They can not only be used to replace the similarly functioning slide valve master in traditional products. A part of the electric one-liquid multi-way valve product, it is important to propose and advocate that the current development should focus on user needs and technological advancement, and more adopt modularized and open features to create more conformity and compliance with current The new product concept of mobile machinery for the new demand for hydraulic technology and the technical application perspective of its combined products, this is an independent opinion and innovation effort in line with China's national conditions.

The invention is based on the above patents and purposes, and proposes another "electric one-liquid multi-channel with innovative features" Description

"Valve" and system products and their combination schemes. Together with the aforementioned invention patents, it aims to further transform and innovate some of the more typical products and solutions that are still based on the application of the mainstream of the traditional structure of the main valve stage. It is conducive to accelerating the development of new electro-hydraulic control valves and their combined products and systems that meet the above objectives, and actively rid of excessive dependence on foreign traditional technologies and products.

The present invention, as well as the aforementioned invention patents "201210376577.3" "201010280504", is equally applicable to circuit combinations based on electro-hydraulic reversing valves in existing industrial hydraulic applications, as well as control occasions including special requirements for the environment or special purposes. The present invention is also a new effort to create a new MINISO CV-based modular combined electro-hydraulic control product and technology that can be combined with mobile hydraulic (MH) and industrial hydraulic (IH).

Summary of the invention

The new electric one-liquid multi-way valve product and technical solution proposed by the invention is also based on the relevant theory and practice of "hydraulic resistance circuit", combined with engineering application for the double-acting hydraulic cylinder or hydraulic motor of the working machine in a typical mobile machine. The characteristics of a reversible controlled-cavity hydraulic resistance loop are comprehensively analyzed and found in the application of mobile hydraulic (MH): Based on the typical four-way circuit of the above-mentioned double-acting hydraulic cylinder or hydraulic motor, the principle scheme and industrial hydraulic pressure The application of (IH) is basically the same, but with obvious features, too, Instruction manual

In the typical product structure, especially in the case of the main stage of the spool and the combination of the individual components, the two originate from the same door. It is well known that commutation in electro-hydraulic multi-way valve systems is the most basic type of product. The analysis of the liquid resistance circuits of some typical components in the multi-way valve reversing basic products helps to deepen their understanding of the nature of the control.

In the main circuit of the electro-hydraulic multi-way valve reversing, the circuit connecting the high-pressure oil from the oil source to the two controlled chambers is generally referred to as an "input circuit" (or an oil inlet circuit), and The circuits that connect the two controlled chambers to the low pressure side (such as the fuel tank) are collectively referred to as the "output circuit" (or "oil drain circuit"). The two circuits show that they have different hydraulic resistance and circuit characteristics. Therefore, they are structurally relatively independent and decomposable. Generally speaking, it is equivalent to the multi-way valve (system) commutation joint P port, it is to the input circuit (inlet circuit) of AB port and the output circuit (exhaust circuit) of AB to T port, they are in control resistance ( Control structure) has obvious features (including combination) and functionality. For the P port to AB port liquid resistance circuit, the first is to open and close the main commutation function, then the P port to the A port can be connected or the P port to the B port can be turned on as required, or the P port can be connected at the same time. AB port and so on. In the commutation of most multi-way valves, when P-A or P-B is turned on, the pressure oil from the pump or other device from the P port is required according to the different flow rates of the working machine, and usually needs to be controlled by the control side. Throttling (including proportional throttling), in addition, according to energy saving Description

The need and coordination of the pump device and load characteristics, most of the reversing "inlet circuit" before the main spool throttle or after throttling will be set with different types of pressure compensation components and combinations, commonly used "throttle Pre-compensation "or" post-throttle compensation" loop combination. For example, in the drawings of the specification, the technical solution adopted is a so-called spool post-throttle compensation form, or a load-independent flow distribution system. Structurally, the compensating device is mostly an independent threaded cartridge type of inlet pressure compensating element or an in-line, insertable component assembly and is mounted in the valve body. They can be used in conjunction with the "inlet circuit" to complete the valve (reversing in-line)

Post-throttle compensation or pre-throttle compensation for P-A or P-B to meet the needs of different oil pump and load systems and energy-saving controls.

In the process of forming the working circuit cycle, before the hydraulic oil reaches the controlled cavity of the working machine, as shown in Figure 1, the main stage of the multi-flow side-based spool valve in the typical electro-hydraulic multi-way valve reversing product (spool) ), will form a classic multilateral linkage control mode, which constitutes the traditional way of P-A, B-T or P-B, A-T reversible loop flow in the working machine.

Further analysis shows that when the A port, the B port and the T port are connected, although the output resistance of the oil drain control in the A-T or B-T circuit is its core target, in reality, when they are linked, that is, A-T Or B-T and P-A, B-like, will be "throttled" at the same time, that is, whether A-T or B-T is required Description

To throttle, generally based on the current four-side spool valve and spool structure, their linkage mode will always form a return throttle state first. Therefore, when it is necessary to carry out subdivision control such as back pressure or no pressure control (pressure relief control) on the oil discharge process, especially when the working load body is in a state of "loading load", it is necessary to perform targeted control requirements as needed. It is often impossible to rely on the main stage of the slide valve alone. Some separate individual components or combinations must be added at this time. From the point of view of the hydraulic resistance loop, "throttled" is not necessary. In addition, it is often considered that the secondary relief valve independently set in Figure 1 is considered to be "input resistance", but in fact, it is used as a combination of output resistance and "replenishment" in the "exhaust circuit", mainly from A- T, Β-Τ The role of pressure limiting and oil replenishment in the circuit.

The above analysis shows that the subdivision of the resistance loop and function helps us to refine the control combination from different perspectives to better meet the actual needs. In addition, as we all know, the hydraulic control of modern mobile machinery has become more diversified and personalized, and the requirements for improving energy efficiency, reducing fuel consumption, energy saving control, green environmental protection, and "manufacturability" and supply chain optimization are increasing. A considerable number of traditional products based on the structure of the slide valve cannot be simply satisfied. Particularly sensitive, the main body of the multi-section slide valve and the valve body forming process with multiple undercut grooves and complex cavities and runners are difficult to manufacture, and they are in a pivotal position in the entire production process and supply chain. Become an innovative development multi-way valve, including in sheet and monolithic structures Description

One of the important constraints, especially for technology-developers like China, is a serious challenge. At the same time, most of the technical solutions of the products of the main structure of the traditional spool valve are based on historical reasons or the laws of market evolution and technological progress. Most of them adopt the traditional method of designing based on individual components in the product formation process. Control and change and reorganization of control loops are continuously added to individual components and combinations with independent functions and connections. The history of development shows that although the traditional methods continue to make new efforts in the development of new modular new technology products and solutions, it is clearly insufficient in terms of stamina, and there are still many spaces for innovation and reform. Therefore, the further implementation of mass customization of agile development is more in line with the mobile machinery market demand, the individualization and diversification of the host and the manufacturer, and further reduce the cost while improving energy efficiency, energy saving and environmental protection, and further research is more reasonable. Compact, economical and new technology solutions that add value to users, and commitment to independent innovation and R&D are particularly urgent for China. Among them, MINISO CV product technology solutions are actively adopted, or through MINISO CV products and technical solutions, and the innovation and development of traditional spool valve technology is infiltrated. It not only has a very solid R&D foundation and broad market application prospects in China, but is likely to become active. Get rid of one of the most effective technical approaches that are currently overly dependent on foreign traditional technology products and solutions in the field of mobile hydraulic pressure control valves.

In order to achieve the above objectives, the technical solution adopted by the present invention is as follows: The manual uses a new combined slide valve and MINISO CV modular electro-hydraulic multi-way valve, which is characterized by: It consists of a combined three-stage spool valve main stage, and a set of two MINISO CVs with oil and more The pressure control function inserts the valve seat valve main stage to control two reversible controlled chambers of the double-acting hydraulic cylinder or the hydraulic motor;

The three-side spool valve body and a set of two cartridge valve pressure compensation control components inserted into the three-side spool valve body are combined into a new combined spool main stage, the spool main stage and two sides The end cap constitutes an oil inlet loop control module to control the input resistance in the two controlled chambers; a set of two MINISO CV multi-function pressure control components with an oil filling function constitutes an oil drain loop control module to control two controlled chambers Two output resistances;

The oil inlet loop control module and the oil drain loop control module are installed in a valve block block to form a modular electro-hydraulic multi-way valve main body; the two control modules of the electro-hydraulic multi-way valve main body include pilot control Element, the pilot control element constitutes a pilot control stage.

The valve block block comprises a set of two MINISO CV compact two-way cartridge valve seat main stage mounting holes and a cover mounting surface, and an independently arranged "three-sided slide valve" mounting hole; Block body mounting hole and mounting surface, main port P, T, Α, Β, control port Pc, Tc, LS main auxiliary port R, M form a modular electro-hydraulic multi-way valve that can be connected in a chip body.

The main stage of the spool valve comprises a post-throttle pressure compensating component, which is an embedded two-way type structure; the main stage of the spool valve is combined with two side flange control end caps to form a separate MINISO CV pressure. Compensation component.

The control mode of the main stage of the spool valve adopts a self-fueling high-pressure self-controlled pilot control mode, one of a low-pressure external control or a pilot control mode based on external oil supply.

The valve block block has a sliding valve through hole, and the sliding valve through hole is provided with a sinking groove; the valve block block is further provided with two MINISO CV seat valve main stage mounting holes and four MINISO CV combined type Flange cover Explain the book installation surface.

The two side flange control end caps are provided with MINI NG3 or ISO4401 -02 and CETOP-02 standard mounting faces for mounting, and the plate mounting is mounted on the upper mounting surface of the two side covers. Miniature two-position four-way pilot control valve.

The three-side slide valve and the two side flange control end caps in the oil inlet loop control module constitute an electric-liquid commutating connection with multi-position four-way function with pressure compensation control after throttling; the electric one-liquid commutation In the upper part of the two-side flange control end cover, two identical threaded cartridge valves of the two-position three-way first conductive magnetic directional valve using the NEWSO CAVITY hole are provided.

The two side flange control end caps are equipped with standard mounting surfaces conforming to ISO4401-02 and CETOP-02, and are equipped with corresponding miniature three-position four-way control valves with manual control type plate connection pilot control.

The two side flange control end covers are provided with an externally controlled pilot control port and a pilot control element.

The electric one-liquid reversing three-way slide valve is a proportional control type "three-side slide valve" main stage, which contains a pre-throttle pressure compensation component, and both flange control end caps contain both proportional control type The pilot control stage and the corresponding structure of the main stage of the spool.

The electric-to-liquid reversing coupling includes a pilot control stage matched with a proportional control pressure valve, two oil return resistance control type seat valve main stages with a replenishing function, and a configuration type flange control cover.

The electro-hydraulic multi-way valve system is integrated by a plurality of chip type electro-hydraulic multi-way valves to form a system-level structure of a plurality of pieces; the multi-connected system of the chip type has an input connection, a tail connection, and an intermediate connection. Dedicated, constitutes a system-level configuration.

The electro-hydraulic multi-way valve system is a monolithic electric one-liquid multi-way valve system with multiple combined functions. Compared with the prior art, the present invention has outstanding effects in the following aspects:

1. The new electric one-liquid multi-way valve technical solution is based on "liquid resistance theory" and "hydraulic circuit decomposition type" Description

Design and combination methods" and other theories, combined with the control requirements of working machinery in mobile machinery, through the analysis of the basic circuit of some typical multi-way valve commutation: based on modular, configurable and open technical features And MINISO CV product technology through the combination of the "input circuit" (inlet circuit) and the "output circuit" (exhaust circuit) liquid resistance combination decomposed combination circuit design, and the main level in two different structures The innovative combination of the main structure, combined with a more flexible and compact pilot control level combination, constitutes a completely innovative "electrical one-liquid multi-way valve system with combined slide valve and MINISO CV" control combination.

2. The new technical solution and its combination product "input circuit" (inlet circuit) absorb some of the advantages of the spool valve structure in throttling control, while avoiding some of its inherent shortcomings, adopting a new type The structure of the main spool valve with three main control edges (throttle ports), referred to as the "three-sided slide valve", and can be controlled based on the MINISO CV electric-liquid pilot control, through the combined flange control cover, Pilot control elements and combinations on the cover plate (both switch type and proportional control type) or diversified pilot control mode for effective commutation and throttling of the "three-sided slide valve" And related controls. At the same time, the innovative "three-sided slide valve" has an obvious modularity and can be combined with technical features, in particular by innovatively setting modular functional components or structures inside the spool, for example, as needed on the "three sides" Slip Description

The valve "on both sides of the valve core, the corresponding one-way valve assembly, pressure compensation component and other functional components can be inserted separately or simultaneously. "Three-side slide valve" spool movement, spring centering, stroke limit or stroke detection ( LVDT can be achieved by setting the side cover of the MINISO CV combined flange control cover (or variant) mounted on the corresponding two sides of the valve body. Similarly, the "three-sided slide valve" is inside the spool. The check valve components, pressure compensation components, etc. are based on the inserts and variants in the MINISO CV. The combined, modular "main spool" assembly and two-sided modular flange-controlled cover Modular end caps and body and internal passages form a new "inlet circuit" (input circuit) control combination. This modular configurable control combination, "three-sided slide valve" is traditionally slippery The main structure of the valve spool is greatly innovative and designed. Firstly, according to the structural characteristics of the three orifices, the total length of the spool body of the main valve of the spool is significantly shortened and the diameter is correspondingly increased (the spool length is fine). Ratio significantly increased), with traditional products" The side slide valve "the main stage has obvious differences and structural features, and at the same time more uses the relevant components and variant design of MINISO CV. Therefore, the new "combined slide valve" in the technical solution of the present invention is an original innovation. Structural design and technical solutions, such as "combined slide valve" and its side cover and other components and combinations, modular configurable and open features, standardization level and its modular combination configuration The degree is very high. Because the new "three-side slide valve" main structure is slender and short, it focuses on improving the modular combination. Description

The valve block block processing technology of the three-side slide valve and its assembly body can be fully realized more rationally and simply, and the materials are more diversified, thereby effectively solving the two core components of the main-stage slide valve and the valve body in the conventional product. The problem of "controllability" and "manufacturability" caused by factors overcomes the inadequacy and the key to the difficulty of achieving modular, configurable and open technical features. This is also very positive for the process and supply chain optimization of the electrotechnical multi-way valve with high technical content, and even more environmentally friendly and sustainable improvement.

3. As mentioned above, the most important and outstanding in the control of the "output circuit" (the oil drain circuit) is to ensure that there are various settings and flexible and diversified control of the oil return resistance. Therefore, this part adopts Seat valve construction is undoubtedly the better choice, and so that they can be directly or directly based on MINISO CV basic components and their innovative components to achieve a combination of two output resistance in the "oil drain circuit" Both complex and flexible controls, including proportional pressure control. According to the control needs, based on the basic MINISO CV already involved, an innovative design and configuration combination is made to form a new MINISO CV-based control component with a fuel filling function and various pressure combination control functions. The present invention incorporates a set of two innovative MINISO CV based oil return control assemblies into an "output loop" control combination and control module in accordance with the needs of a basic four-way circuit. new Description

The MINISO CV return control unit is a pressure control unit with multiple pressure controls or combinations and replenishment. It consists of a seat valve main stage CVI with a replenishing function and a matched combination of various pressure control and combined flange control cover CVC. It integrates direction, pressure and other control in the pilot control. In the pilot control mode, it can have both switch and proportional.

The "Output Loop Control Module" can be composed of two innovative MINISO CV oil return control components. Similarly, according to different control requirements, it can be flexibly and conveniently carried out through modular, configurable and open features. A variety of combinations, which together with the valve block block and associated structures, can be combined into a diverse and individualized set to meet the different needs of "drainage loop" control in different mainframe or electro-hydraulic multi-way valve systems.

It should be noted that the use of two MINISO CV compact two-way cartridge valve with the "three-sided spool" to combine and control the oil return resistance to A, B to T, this decomposed loop and control scheme and The structure is entirely an independent innovation, which was first proposed in the mobile hydraulic (MH) electro-hydraulic multi-way valve reversing system. Since the "oil drain circuit" (output circuit) uses the MINISO CV control unit combination as one of the main modules, the "three-side slide valve" control end cover in the "input circuit" (inlet circuit) is based on MINISO. The control cover of the CV becomes an important component of the main module, which makes the new display more powerful. Description

The patented technical solution adopts the modular, configurable and open technical features of MINISO CV and is one of the key technologies. Because MINISO CV is very beneficial to advanced manufacturing and management modes such as “mass customization”, “agile development” and “lean manufacturing”, it is conducive to expanding the scale of production and reducing costs, which is conducive to improving product quality and shortening the lead time. Therefore, the invention based on MINISO CV has a very positive significance for the Chinese hydraulic industry to actively get rid of the excessive dependence on existing foreign traditional products and technical solutions, form China's independent technology, and enter the high-end field of mobile hydraulic control.

4. The electro-hydraulic multi-way valve product and technical solution of the present invention based on the hydraulic resistance loop decomposition design principle, the overall layout of the basic valve block block and the mounting hole, the mounting surface, the holes in the valve block block, and the like, It is very important, according to the basic layout of the basic module to ensure the basic layout of the basic module, fully reserved in the subsequent variant design of the basic valve block, the various mounting holes, mounting surface, main control and Pilot control and auxiliary tunnels and related chip connections have a good basis for integration and additional requirements, without extensive or substantial changes.

The "three-side slide valve" valve hole in the block is a through hole, which is used to match the mating part of the spool valve spool to ensure high precision by honing and other processing techniques, since only a small number of undercut grooves are used in the hole. The straight hole diameter is large, so it can fully guarantee the better processing and mating performance, shorten the processing time and so on. And pre The book leaves the space requirement for the "three-sided slide valve" because of the need to use the modified design structure with the intermediate valve sleeve. Now the basic valve block block has a shorter flow path in the valve body, and the layout is compact and simple, and the resistance loss along the path is small. The "three-side slide valve" through the valve hole and the center line of the two MINISO CV mounting holes in the "discharge circuit control module" and the axes of the A and B ports intersect perpendicularly to each other and can lie in the same plane. At the same time, the main oil ports P and T in the valve block block, and the control oil ports PC, TC and other auxiliary holes and the through holes in the chip connection are sufficiently spaced from each other, and the layout is compact and reasonable, which is very convenient for processing. In particular, it is more advantageous when castings or profiles formed by casting are used, even if steel blanks or profiles are used, good processing properties are ensured. The valve block block reserves a relatively large space in the upper part of the middle portion, considering that when the chip connection is required for the variant design, a relatively compact inter-layer functional component or accessory can be disposed between the layers. DRAWINGS

The invention will be described in detail below with reference to the accompanying drawings and specific embodiments;

Figure i is a typical schematic diagram of the commutation of an electric-to-liquid multi-way valve using the main stage of a conventional spool valve structure.

Figure 2 is a schematic diagram of a modular modular electric-to-liquid multi-way valve using a MINISO CV compact two-way cartridge valve.

Fig. 3 is a structural schematic view of a modular electro-hydraulic multi-way valve (commutated basic product) using a combined slide valve and MINISO CV.

Figure 4 is an exploded view of the product of Figure 3.

Figure 5a is a schematic diagram of the hydraulic circuit of the product of Figure 3 (pilot control internal control).

Figure 5b is a schematic diagram of the hydraulic circuit of the product of Figure 3 (pilot control external control).

Figure 6 is an exploded view of the "three-sided slide valve" in the main stage of the combined slide valve of Figure 3. Figure 7a is a schematic diagram of the control assembly (internal control) of MINISO CV with oil and various pressure controls in Figure 3.

Figure 7b is a schematic diagram of the MINISO CV with charge and multiple pressure control control components (simple external control) in Figure 3.

Figure 8 is a perspective view of the body valve block block of Figure 3.

Figure 9a shows a simplified outline of a two-position three-way pilot valve with two threaded connections.

Figure 9b shows a simplified outline of the pilot control of a proportional valve with two threaded connections.

Figure 9c shows a simplified outline of the two-panel mounting face MINI two-position four-way reversing valve.

Figure 9d shows a simplified outline of the plate mounting surface and the MINI three-position four-way manual control valve.

Figure 9e shows an end cap with an externally controlled hydraulic port.

Figure 10a is a schematic diagram of a multi-piece modular electro-hydraulic multi-way valve system based on the product technical solution of Figure 3. Figure 10b is a simplified outline of the integral valve system (b) of Figure 10a.

Figure 11 Figure 9 Schematic diagram of the hydraulic system of the product (internal control).

Fig. 12 is a schematic diagram showing the commutation structure of an electric-liquid multi-way valve using a typical main stage of a conventional spool valve structure.

Figure 13 shows modular, configurable, open technical features and a combination of modular spool valves and MINISO CV modular electro-hydraulic multi-way valves (commutation).

Explanation of the referenced parts in the drawings

1-0: Oil inlet control module consisting of the main valve of "three-side slide valve" and the control cover on both sides

1-1-0: "Three-sided slide valve" main stage

1-1-1-0: Post-throttle pressure compensation component

1-1-1-1: Pressure compensating spool

1-1-1-2: Pressure compensation spring

1-1-2-0: Post-throttle pressure compensation component

1-1-2-1: Pressure compensating spool

1-1-2-2: Pressure compensation spring

1-1-3-0: Pressure compensation feedback device

1-2-0: II W end cover

1-2-1-0: Side cover cover body

1-2-2-0: Pressure regulating valve Instruction book

1-2-3-0: Plate mounted two-position four-way electromagnetic reversing valve

1-2-4-0: Spool valve main stroke adjustment lever

1-2-5-0: Combination i plug

1-3-0: Side cover

1-3-1-0: Side cover cover body

1- 3-2-0: Pressure regulator

2- 0: One set of two MINISO CVs with charge and multiple pressure control functions, cartridge seat valve main stage, oil return control module

2-1-0: Oil return control module A

2-1-1-0: MINISO CV compact two-way cartridge seat valve main stage

2-1-2-0 : MINISO CV compact two-way cartridge valve mounting cover

2-1-2-1-0: Oil return pressure regulator

2-1-2-2-0: Oil return solenoid reversing valve

2-1-2-3-0: Combination screw plug

2-1-2-3: External control type oil return control cover body

2-1-2-4: Internal control type oil return control cover body

2-2-0: Oil return control module B

2-2-1-0: MINISO CV compact two-way cartridge seat valve main stage mounting hole

2- 2-2-0 : MINISO CV compact two-way cartridge valve cover mounting surface

3- 0: valve body

Specific form

In order to make the technical means, creative features, achievement goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations. A modular modular electro-hydraulic multi-way valve system technology and product using a new combined slide valve main stage and a MINISO CV compact two-way cartridge valve seat main stage combination, see Fig. 3, Fig. 5a, Fig. 5b Figure 9, Figure 10, Figure 12, Figure 13, it consists of a set of innovative combined "three-sided spool" main stage, see Figure 3, Figure 1-1-0, and a set of two MINISO CV has the main stage of the cartridge valve and the various pressure control functions. See 2-0 in Figure 3, 2-1-0 in Figure 7a, 7b to control the double-acting cylinder or fluid. Description Two reversible controlled chambers for the book pressure motor. The new three-stage spool valve body and a set of two cartridge valve pressure compensation control components specially designed inside the "three-side spool" valve body are combined into a new combined spool valve main stage. See Figure 6. The "inlet circuit control module" that constitutes the post-throttle load compensation control function is shown in Figure 3, 1-0, to control the input resistance in the two "controlled chambers", which are combined with a set of two MINISO-based CVs. The innovative multi-function pressure control unit with oil filling function constitutes the "exhaust circuit control module". See 2-0 in Figure 3 to control the two output resistances of the two controlled chambers. The two main modules with different structural features are different. The valve block block assembled in the innovative design is shown in Figure 3, Figure 4, Figure 5a, Figure 5b, 3-0, Figure 9a-9e, 10a, 10b, 12 and the modular electro-hydraulic multi-way valve body. a section with a profile, further, the body is guided by two control modules, which are 2-1-0, 2-2-0 in the MINISO CV combined flange control cover (see Figure 3). The side cover (see Figure 3) 1-2-0, 1-3-0, together constitute the pilot control stage, see the schematic diagrams 5a, 5b Shaded, embodiments of the pilot control "trilateral spool" primary and two MINIS CV compact two-way cartridge valve main stage valve.

The above-mentioned electro-hydraulic multi-way valve body and pilot control stage constitute a technical scheme of a modular electro-liquid multi-way valve system adopting a novel combined slide valve and MINISO CV and shown in Figs. 3, 4, 9a-9e, 12, 13 The typical product, especially Figure 13, shows the modularity of the technical solution of the present invention in a more obvious and intuitive manner, and can be matched with the distinctive technical features.

Using a unique design layout to install two sets of functional modules with different structures and functions to control the main stage. Figure 2 2-0, 1-0 is the basic block in the main valve block of the present invention. Figure 3, 4, 3 -0, the main stage layout inside the valve block block is shown in the perspective view of Figure 8, which consists of a set of two MINISO CV compact two-way cartridge seat valve main stage mounting holes, see MINISO CV/CVH in Figure 8; 2-2-l-0, 2-ll-0 and cover mounting valve face MINISO CV/CV/CVF 2-2-2-0, 2-1-2-0, a separate setting of "three-sided slip Valve "mounting hole (SP/H1-0) or two side end flange mounting faces (MINISO CV/SP/(Fl-l), (Fl-2); these (seat valve type) main stage mounting holes, Cover mounting surface and spool mounting holes, end cap mounting surfaces and their respective main oils Instructions port P, T, Α, Β and a number of pilot control channels, auxiliary control ports, etc. (pilot control channels and other auxiliary channels, orifices, etc. see schematic diagram Figure 5, not shown in entities such as Figure 3) The connection between the two is in accordance with the principle of the decomposed hydraulic circuit design. According to the different requirements of the main stage and the pilot stage control, the chip multi-connection installation connection needs special elements and special design and layout, thereby forming the modularization of the chip connection. The electro-hydraulic multi-way valve basic valve body (commutated valve body). See Figures 3, 4, and 6 for the 3-0 diagrams 9a-9e, 10a, and the relevant parts of Figure 12. (Figure 5 hydraulic circuit schematic diagram, only the products shown in Figure 3, 12 are listed, not all other products are listed).

Further, the "inlet oil circuit control module" in Fig. 3 in the combination of the flange control cover 1-0 in Figure 3 1-2-0, 1-3-0, "exhaust circuit control module" Figure 3 The MINISO CV combined flange control cover in the middle 2-0 is shown in Figure 3, CVA, l-2-0, CVB, 1-3-0 are used to fix the 3-0 to the valve block block in Figure 3, Sealed, respectively, involved in the "three-sided spool" spool, the pressure compensation control assembly in 1-1-0 in Figure 3 (see Figure 1-1-1-1, 1-1-2-0) Control, the main valve of the multi-function pressure control of the MINISO CV with the oil filling function. The control of the 2-1-1-1-0, 2-2-1-0 in Figure 4, the oil inlet circuit and the oil drain circuit The control module is based on a modular flange control end cover and cover plate. Both are modular and modular configurable structures based on the combined flange control cover in MINISO CV. They can be used on the cover according to different control requirements. A plurality of screw-connected or plate-connected pilot control elements are combined, and corresponding pilot control channels are provided in the block body to realize four controllable main valves in the basic type of the one-piece electric multi-way valve Mouth and The two groups should be the primary function of the valve block control module that various combinations of pre-control and individual control. See Figures 4, 9a-9e, 12 and Figure 13. They showcased new modular and typical products with different combinations of control and functionality.

Further, the modular combined electro-hydraulic multi-way valve system adopting the "three-side slide valve" main stage and the MINISO CV compact two-way cartridge valve seat main stage, the main body of the electric one-liquid multi-way valve In the middle, the "inlet oil circuit control module" is a new "three-sided slide valve" structure, but it also has a modular and configurable technology. The specification sign, such as: Figure 6 shows that the main stage of the spool valve contains the throttle after the pressure compensation component is embedded in the two-way type structure. Figure 61-1-1-0, 1-1-2-0, can be Direct-acting control can also be used with pilot-controlled type; when adopting pilot-controlled mode, they can control the side cover of the cover plate with the combined flange. Figure 1-2-1-0, 1-3-2 The combination of -0 actually constitutes the pressure compensation component (combined) of the separate MINISO CV, and can be controlled by the pilot control in the two side flange control end caps, which can control the pressure compensation accordingly. The components and the specially arranged control channels are coordinated and coordinated for control. In Fig. 3, 1-2-2-0 is a typical arrangement, and the pilot pressure control element PI indicated in Figs. 9a-9e is also a typical and commonly used arrangement.

The modular, configurable "three-sided slide valve" can be configured to form pressure compensation components or other functional components with different combinations, forming a "three-sided slide valve" main stage with composite control function, and as a new type of chip One of the main functional components in the main body of a one-way multi-way valve can be used to meet the control requirements of the "four-way circuit" of different load systems and features by the design and matching of the "three-side slide valve". In particular, the technical solutions shown in Figures 3, 4, 5a, 5b, etc., are relatively more complex solutions and products, and are listed in Figure 9d, Figure 12, and can be based on traditional sliding. When the function of the valve is relatively simple, the relatively simple "three-side slide valve" is adopted. They can refer to the traditional structure of the electro-hydraulic multi-way valve to switch the middle-stage main-stage slide valve, mainly to ensure the commutation and In the form of throttling median function, and flexible and simple configuration, to replace and meet the general type of electric one-liquid multi-way valve control needs.

The modular and configurable "three-sided slide valve" control method adopts the appropriate technical measures, in addition to the self-supply high-pressure self-control pilot control mode shown in the schematic diagrams 5a, 5b, mainly The necessary control elements and structures are set in the pilot control stage, and almost all pilot control methods in the conventional electric-liquid multi-way valve product structure can be realized. In particular, the electric-liquid control and the electro-hydraulic proportional control method using external low-pressure external control (see Figure 9e, Figure 12 for external control ports) are well known. External oil supply, low-voltage external control is the traditional structure electric one-liquid multi-way valve. And systems (including multi-piece, multi-channel integrated products and Description Book scheme), the most commonly used mainstream style. The advantage of the solution of the invention is that it can achieve self-fueling, high-pressure pilot control (internal control). In the same way, a new variant design combination of the main assembly of the "three-side slide valve" is carried out, and the corresponding side-side and manual-operated mechanisms can also constitute a new type of hand-operated "three-side slide valve" that is manually operated. level. These are undoubtedly an important complement and development of traditional product solutions and products. This is also an important innovation in control programs and products in Benming.

Further, the technical solution and the product of the present invention are innovatively designed for the main-stage valve block block (Fig. 8). In the overall layout of the valve block block, firstly based on the principle of the hydraulic resistance circuit decomposed design, from the basic valve block block according to the installation and connection characteristics of the functional module main stage, the layout of the oil inlet circuit control module is rationally arranged. Valve hole and end cover mounting surface; seat valve main stage mounting hole of the "oil drain circuit control module" and mounting surface of the combined flange cover. In order to highlight and guarantee the modularity, configurable and open technical features, the MINISO CV-based modular features are determined in general and the bearing elements and mounting features and dimensions of the mounting holes are important. The hole size of the "three-sided slide valve" mounting hole will be the same as the corresponding radial dimension of the seat valve mounting hole of the same specification as MINISO CV, such as the valve sleeve and the spool size, at the big end of the MINISO CV mounting hole. In the diameter dimension, it can fully meet the size requirements of the inserts and the matching holes in the "three-side slide valve" valve core, and when designing the "three-side slide valve" variant, for example, to set the intermediate valve sleeve to leave the radial direction Space, because the two main-stage modules of the valve block block can be coordinated and set at the same time, which effectively improves the combination of individual components in the existing electric-liquid multi-way valve, which is difficult to match and coordinate. The situation, of course, is also very advantageous for the simplification and rationalization of the modular, compact machining process of the valve block.

In the basic valve block block, the four mounting faces of the two main modules, namely the two-side end cover mounting surface and the upper flange control cover mounting surface, are also preferably equipped with the same flange cover as MINISO CV ( And the same type and size of the mounting surface, not only can be well matched with the mounting hole, but also has high connection reliability, and also retains a rectangular body when the cover plate and the end cover body are modified. Extending to both sides The specification space, because it effectively simplifies the structural and dimensional elements of the mounting surface, makes the important working surface of the main assembly surface of the valve block block have the same consistency and the same quality guarantee during manufacture, and the processing is improved. , cut costs.

It can be seen that the overall layout of the main-stage valve block of the modular electro-hydraulic multi-way valve of the invention is rationalized and compact, and can effectively deal with the "hole" which is very inconvenient to solve in the multi-way valve body of the conventional structure. The "face" problem is therefore unique and innovative, fully embodying the advantages of the new technology solutions. At the same time, the overall modular features of this technical solution are extended to the modularization and rationalization of key machining elements and processes.

The basic valve block of the technical solution preferentially adopts a casting process to directly form a casting or a high-strength cast iron profile manufactured by a special process and equipment, which can obviously resolve the complicated casting process which is the key to the development of the medium and high-end multi-way valve technology for a long time. The dilemma brought by the industry has important technical and economic significance. In addition, due to the convenient layout and processing of the holes, faces and the like of the block, it is also suitable for directly using steel forgings or other light metal profiles in small and medium batches or under special environmental conditions.

In addition, the combination of the flanged control cover body and the end cap of the control element mounting hole similar to the body and the valve block block is re-stated. The layout of the mounting surface is rationalized, compacted and modularized in accordance with MINISO CV. The principles of standardization and so on have generally guaranteed the rationalization and innovation of the new technical solutions and products of the present invention. The body material can be the same as the main valve block block and the same process and materials can be used.

Some typical products constructed according to the technical solution of the present invention will be described below with reference to the accompanying drawings: Several types of combined slide valves and MINISO are shown in Figures 9a, 9b, 9c, 9d, 9e, 10a, 10b. Typical product and system of modular combined electro-hydraulic multi-way valve for CV (compact two-way cartridge valve), the basic type of multi-way valve body in the modular combined electro-hydraulic multi-way valve shown in Figure 9a The main body is used to control the two side flange control end covers in the main body, and is also a basic type flange control cover plate, which can be combined with the "three-side slide valve" to form a three-stage throttle compensation control. Bit four electric fluid reversing; special setting on the upper side of the flange control cover on the two sides for MINI NG3 or ISO4401-02 The manual and the CETOP-02 standard mounting surface, and the upper mounting surface of the two side covers can be installed separately or symmetrically to install two corresponding innovative plate-connected miniature two-position four-way pilot control valves. The reversing main body and the two-side flange control end cover are combined into a four-in-one-one-one-way multi-way valve commutation with two-position four-way or three-position four-way function.

Another modular combined electro-hydraulic multi-way valve product shown in Fig. 9b is a basic type main body, and the "three-side slide valve" in the oil inlet loop control module is the same basic type as described above, but it The two side flange control end caps are a combination of another basic flange control end cap, which also constitutes a multi-position four-way function electric-liquid reversing connection with throttling pressure compensation control; Two identical flanged control end caps are respectively provided with two identical threaded cartridge valves of NEWSO CAVITY two-position three-way first-conducting magnetic directional valve, which constitute a "three-side slide valve" with a different pilot control element of 9a. Another modular combined electro-hydraulic multi-way valve product.

In Fig. 9c, another modular combined electro-hydraulic multi-way valve product is shown in which the multi-way valve main body and 9a, 9b are a basic type main body, and the two side-mounted flange control end covers are still basic structures. However, in the upper side of the right or left flange control end cover, there is a standard mounting surface conforming to ISO4401-02 and CETOP-02, and a corresponding miniature three-position four-way connected by manual operation type plate is installed. The control valve and the other side of the simple configuration flange control end cover can be combined into a three-position four-way function electric one-liquid multi-way valve (commutation linkage) with manual pilot operation; further, when adopting an innovative one with the same When the side double electromagnet is installed and controlled, the three-position four-way electromagnetic pilot valve connected by the plate type can form a three-position four-electric one-liquid multi-way valve commutation with three-position four-way function electric-liquid pilot (not shown in the figure) Show further details).

The modular combined electro-hydraulic multi-way valve product shown in Fig. 9d is characterized in that: the relevant "three-side slide valve" in the reversing main body is designed to meet the needs of proportional control, and the proportional control type "three-side slide" The valve is "main stage, but it can still contain a pre-throttle pressure compensation component inside, and the flange control end caps on both sides can contain a separate set of pilot control stages that match the main stage of the proportional control type spool. And the corresponding knot According to the specification structure, other structures may be additionally provided for different control on the two sides, which are used to connect the main oil port P and the execution structural oil ports A and B to form a P-A port or a P-B port respectively having a proportional flow output function; Innovative "inlet oil circuit" proportional control module assembly, further, in this solution, it can also be supplemented with two belts on the left and right sides of the upper part of the valve block block connecting the main oil port T and the execution structural oil ports A and B. The oil-return oil resistance control type seat valve main stage and the corresponding proprietary configuration type flange control cover plate also have the same pre-set matching and coordination control structure, which can constitute the oil return pressure of the A and B return ports. Performs complex proportional control with multiple back pressures or continuously changing control back pressure; constitutes an innovative "return oil resistance" type proportional control module assembly; and "inlet resistance" or "return oil resistance" proportional control The type and structure can be modified and configured in a variety of styles; if necessary, the "return oil resistance" control assembly can be further combined to be suitable for use with "negative load" energy saving and storage Specific requirements and more complex control functions.

The product shown in Figure 9e is the above-mentioned external control pilot type with external oil supply, low pressure external control, new modular slide valve and MINISO CV modular electric one-liquid multi-way valve system. Useful technical solutions and product models that can be used to replace some traditional products. When using the external control pilot type, including the main stage and the pilot control loop, separate configuration and combination can be required according to different external control modes.

The product shown in Fig. 10a is a modular combined electro-hydraulic multi-way valve system adopting a new scheme, and the basic type electro-hydraulic multi-way valve of the electro-hydraulic multi-way valve system illustrated by a plurality of drawings shown in Fig. 3 and the like The commutation is integrated to form a system-level structure of a plurality of slices; in the multi-system of the chip connection, the input connection, the tail connection, the intermediate connection and the dedicated connection of the individual requirements can be matched according to different requirements. Forming a system-level configuration, electronically controlled, remotely controlled, and other types of control by various standard or dedicated controllers including a corresponding CAN bus capable of computer and PLC controllers and devices.

The product shown in Fig. 10b is a whole of the configuration of the new technical solution and the basic product based on the present invention. Description The modular modular electro-hydraulic multi-way valve system, which can have an innovative integral one-electrople multi-way valve (combined to a two-piece, three-way or more combined function). These new integrated electro-hydraulic multi-way valves have functionally included the functions of common and special structures such as input coupling, tail coupling, intermediate coupling, and dedicated coupling in the chip structure, which can constitute a new combined integral type electric system. One-liquid multi-way valve system. The valve block body in the integral modular combined electro-hydraulic multi-way valve system shown in Fig. 10b can be either a complete monolithic block as shown in Fig. 13, or a unitary mutual connection of the sub-modules to the integrated valve block. The machining of the blocks is further simplified, but the installation and connection are slightly complicated. (Not shown in the figure) The only one shown in Figure 13 is a simple representation, which is more complicated in the entity. Similarly, it enriches and enriches the modular features of the solution and product of the present invention. The system is commutated into a system-level combined structure of a plurality of pieces, and the multi-connected system of the chip-type connection can be configured with input connection, tail-linking, intermediate connection and personalized connection of the individual requirements according to different requirements. Forming a system-level configuration, electronically controlled, remotely controlled, and other types of control by various standard or dedicated controllers including a corresponding CAN bus capable of computer and PLC controllers and devices. Figure 11 is a schematic diagram of the hydraulic system of the products of Figures 9a-9e and Figures 10a-10b, again, which only roughly shows a partial combination system. Figure 12 is a schematic diagram of the product structure of a simple structure when the externally controlled pilot control mode is adopted. Figure 13 is a modular configurable, open-ended technical feature and combination diagram of a modular electro-hydraulic multi-way valve (commutation linkage) using a combined slide valve and MINISO CV. The typical product is reversed in this embodiment. Joint body (with section line section), "Trilateral slide valve" and side cover end cover combination 1-0, MINISO CV seat valve main stage 2-0, valve block block 3-0, are shown in Figure 13 , can indicate its selection and assembly.

It should be noted that the above description is only for explaining some typical examples of the present invention and its products. It is well known that based on products with modular, configurable and open technical features, it can be combined through variant design and configuration. There are a lot of "combination products", so they do not limit the invention without conflict. For those skilled in the art, the present invention can be followed by The developments and variations of the present invention are intended to be included within the scope of the present invention.

Claims

claims

1. A modular electro-hydraulic multi-way valve using a new combined slide valve and MINISO CV. It is characterized by: It consists of a set of one combined three-sided slide valve main stage, and a set of two MINISO CVs with oil supply and A variety of pressure control functions are installed in the main stage of the cartridge seat valve to control the two reversible controlled chambers of a double-acting hydraulic cylinder or hydraulic motor;

The three-sided slide valve core body and a set of two cartridge valve pressure compensation control components installed inside the three-sided slide valve core body are combined into a new combined slide valve main stage. The slide valve main stage and two side An end cap is installed to form an oil inlet circuit control module to control the input resistance in the two controlled chambers; a set of two MINISO CV multifunctional pressure control components with oil replenishment function form an oil discharge circuit control module to control the two controlled chambers The two output resistances;

The oil inlet circuit control module and the oil discharge circuit control module are installed in a valve block to form a modular electro-hydraulic multi-way valve main body; the two control modules of the electro-hydraulic multi-way valve main body include pilot control component, and the pilot control component constitutes a pilot control stage.

2. The modular electro-hydraulic multi-way valve using a new combined slide valve and MINISO CV according to claim 1, characterized in that: the valve block includes a set of two MINISO CV compact two-way plugs. Install the seat valve main stage mounting hole and cover plate mounting surface, an independently installed "three-sided slide valve" mounting hole, two side end cap flange mounting surfaces, the side end cap flange mounting surface and MINISO The mounting surface of the CV cover plate is the same; it is composed of the valve block mounting hole and mounting surface, the main oil ports P, T, A, B, the control oil ports Pc, Tc, and the LS main auxiliary oil ports R and M. It can be composed of pieces. Connected modular electro-hydraulic manifold valve body.

3. The modular electro-hydraulic multi-way valve using a new combined slide valve and MINISO CV according to claim 1, characterized in that: the main stage of the slide valve includes a post-throttle pressure compensation component, which is an embedded second stage. Through-type structure; The main stage of the slide valve is combined with two side flange control end covers to form a separate MINISO CV pressure compensation component.

4. The modular electric valve using the new combined slide valve and MINISO CV according to claim 1 The liquid multi-way valve according to the claim is characterized in that: the control mode of the main stage of the slide valve adopts one of a high-pressure automatic pilot control mode based on self-supply of oil, a low-pressure external control based on external oil supply, or a pilot control mode. kind.

5. The modular electro-hydraulic multi-way valve using a new combined slide valve and MINISO CV according to claim 1, characterized in that: the valve block has a slide valve through hole, and the slide valve through hole is equipped with a There are undercut grooves; the valve block body is also equipped with two MINISO CV main stage mounting holes for seat valves and four mounting surfaces for MINISO CV combined flange cover plates.

6. The modular electro-hydraulic multi-way valve using the new combined slide valve and MINISO CV according to claim 3, characterized in that: the two side flange control end covers are provided with MINI NG3 for assembly. Or comply with ISO4401-02 and CETOP-02 standard mounting surface, and install a plate-type connected miniature four-way pilot control valve on the upper mounting surface of the two side covers.

7. The modular electro-hydraulic multi-way valve using a new combined slide valve and MINISO CV according to claim 3, characterized by: a three-sided slide valve and two side-mounted flange control ends in the oil inlet circuit control module The cover constitutes an electro-hydraulic reversing coupling with post-throttle pressure compensation control and a multi-position four-way function; the electro-hydraulic reversing coupling is provided with two identical NEW CAVITY couplings on the upper part of the flange control end cover on both sides. Threaded cartridge valve for 2-position 3-way pilot solenoid directional valve.

8. The modular electro-hydraulic multi-way valve using the new combined slide valve and MINISO CV according to claim 2, characterized in that: the two side flange control end covers are equipped with ISO4401-02 and CETOP- Category 02 standard mounting surface is equipped with a corresponding miniature three-position four-way control valve using a manually operated plate connection pilot control.

9. The modular electro-hydraulic multi-way valve using the new combined slide valve and MINISO CV according to claim 2, characterized in that: the two side flange control end covers are provided with externally controlled pilot control oil ports and pilot control components.

10. The modular electric valve using the new combined slide valve and MINISO CV according to claim 7 The claimed hydraulic multi-way valve is characterized by: The electro-hydraulic reversing joint three-side slide valve is a proportional control type "three-side slide valve" main stage, which contains a pre-throttle pressure compensation component inside, and the two-side method The blue control end cover also contains the pilot control stage and the corresponding structure that match the main stage of the proportional control slide valve.

11. The modular electro-hydraulic multi-way valve using the new combined slide valve and MINISO CV according to claim 7, characterized in that: the electro-hydraulic reversing coupler includes two oil return resistance control types with oil replenishment function. Configurable flange control cover for main stage of seat valve and pilot control stage with proportional pressure control.

12. The modular electro-hydraulic multi-way valve using the new combined slide valve and MINISO CV according to claim 7, characterized in that: the electro-hydraulic multi-way valve system is composed of multiple chip-type electro-hydraulic multi-way valves. The multi-link system is integrated with multiple slices to form a system-level structure of multiple slices; the multi-link system connected in this slice type includes input connections, tail connections, intermediate connections, and dedicated connections, forming a system-level configuration.

13. The modular electro-hydraulic multi-way valve using the new combined slide valve and MINISO CV according to claim 7, characterized in that: the electro-hydraulic multi-way valve system is an integrated electro-hydraulic multi-way valve with multiple combined functions. valve system.