Load-sensitive arbitrary double-oil-source reconfigurable oil supply logic multi-way valve

Abstract

The application discloses a load-sensitive arbitrary double-oil-source reconfigurable oil supply logic multi-way valve, which comprises a valve body and a valve core matched with the valve body to form a logic function, the valve body is provided with an oil inlet P1, an oil inlet P2, a working oil outlet A and a working oil outlet B, the oil inlet P1 is connected with an oil source Q1, the oil inlet P2 is connected with an oil source Q2, and the valve body is provided with an oil inlet ring channel one, an oil inlet ring channel two, a combined oil inlet ring channel, a combined oil outlet channel one and a combined oil outlet channel two outside the valve hole periphery. The structure has two oil supply sources, and through the matching of various valve core structures, the functions of oil supply of any oil source or fixed-proportion combined oil supply of two oil sources are realized, so that different use requirements are met, the design mode that a single valve body is matched with various valve cores is adopted, the reconfigurability and selectability of the multi-way valve are improved, and the adaptability and operability of the valve are better.

Description

TECHNICAL FIELD

[0001] The present application relates to a multi-way valve, in particular to a multi-way valve with load-sensitive arbitrary double-oil-source reconfigurable oil supply logic. BACKGROUND

[0002] As one of the core components of the hydraulic system of engineering machinery, the performance of the multi-way valve has a decisive influence on the control performance and reliability of the whole machine. By changing the relative position of the valve core and the valve body in the multi-way valve, the opening and closing of the inlet and outlet ports are realized, thereby realizing the control of the direction and flow of the oil. The hydraulic multi-way valve is used in the existing engineering machinery, and a double pump is adopted. The main purpose is: to better realize the energy saving of the system, to prevent the large energy loss caused by the single large displacement oil pump; to realize better operation performance, two pumps can realize split-flow and combined-flow by controlling the on-off of the split-flow control valve, better control and multi-action good composite performance and various action operation micro-motion performance. At present, only the fixed function split-flow control mode is used in the multi-way valve, but it does not have the function of flexible reconfiguration of oil source oil supply, and it is impossible to realize the function of two oil sources with fixed proportion. SUMMARY

[0003] In order to solve the above technical problems, the present application provides a multi-way valve with load-sensitive arbitrary double-oil-source reconfigurable oil supply logic.

[0004] The technical scheme of the present application is: a load-sensitive arbitrary double-oil-source reconfigurable oil supply logic multi-way valve, comprising a valve body and a valve core cooperating with the valve body to form a logic function, the valve body has an oil inlet P1, an oil inlet P2, a working oil outlet A and a working oil outlet B, the oil inlet P1 is connected to an oil source Q1, the oil inlet P2 is connected to an oil source Q2, the valve body is provided with an oil inlet ring channel one, an oil inlet ring channel two and a combined oil inlet ring channel outside the valve hole, the oil inlet ring channel one is in communication with the oil inlet P1, the oil inlet ring channel two is in communication with the oil inlet P2, the oil inlet ring channel one and the oil inlet ring channel two are located on both sides of the combined oil inlet ring channel, the logic port one between the oil inlet ring channel one and the combined oil inlet ring channel is in communication or disconnected by the valve core control, the logic port two between the oil inlet ring channel two and the combined oil inlet ring channel is in communication or disconnected by the valve core control; the valve body is further provided with a combined oil outlet oil channel one and a combined oil outlet oil channel two, the other end of the combined oil inlet ring channel is connected to the combined oil outlet oil channel one and the combined oil outlet oil channel two through a one-way valve, the logic port three between the combined oil outlet oil channel one and the working oil outlet A is in communication or disconnected by the valve core control, the logic port four between the combined oil outlet oil channel two and the working oil outlet B is in communication or disconnected by the valve core control; when the valve core is in the middle position, the logic port one, the logic port two, the logic port three and the logic port four are all disconnected; when the valve core is in the right position, at least one of the logic port one and the logic port two is in communication, the logic port three is in communication, and the logic port four is disconnected; when the valve core is in the left position, at least one of the logic port one and the logic port two is in communication, the logic port three is disconnected, and the logic port four is in communication.

[0005] As a preferred technical scheme, the valve core is provided with a bidirectional oil passing shaft shoulder corresponding to the logic port one and a closed cylindrical shaft shoulder corresponding to the logic port two, when the valve core is in the left position or the right position, the bidirectional oil passing shaft shoulder connects the logic port one and the closed cylindrical shaft shoulder disconnects the logic port two.

[0006] As a preferred technical scheme, the valve core is provided with a closed cylindrical shaft shoulder corresponding to the logic port one and a bidirectional oil passing shaft shoulder corresponding to the logic port two, when the valve core is in the left position or the right position, the closed cylindrical shaft shoulder disconnects the logic port one and the bidirectional oil passing shaft shoulder connects the logic port two.

[0007] As a preferred technical scheme, the valve core is provided with a bidirectional oil passing shaft shoulder corresponding to the logic port one and a bidirectional oil passing shaft shoulder corresponding to the logic port two, when the valve core is in the left position or the right position, the bidirectional oil passing shaft shoulder connects the logic port one and the logic port two.

[0008] Preferably, the left throttling groove is arranged on the outer periphery of the left end of the bidirectional oil passing shaft shoulder, the right throttling groove is arranged on the outer periphery of the right end of the bidirectional oil passing shaft shoulder, the left throttling groove and the right throttling groove are arranged in a circumferential staggered manner, the inner end of the left throttling groove extends towards the right end, and the inner end of the right throttling groove extends towards the left end.

[0009] Preferably, the valve body is further provided with an A port oil return channel and a B port oil return channel, when the valve core is in the right position, the working oil port B is in communication with the B port oil return channel, and when the valve core is in the left position, the working oil port A is in communication with the A port oil return channel.

[0010] Due to the adoption of the above technical scheme, the present application has the following beneficial effects: the structure of the present application has two oil sources, by adapting to various valve core structures, the functions of any oil source supply or the functions of two oil sources supply in a fixed proportion are realized, different use requirements are met, the design mode of the single valve body adapting to various valve cores improves the reconstruction and selectivity of the multi-way valve function, and the adaptability and controllability of the valve are better. BRIEF DESCRIPTION OF DRAWINGS

[0011] The following drawings are only intended to illustrate and explain the present application and do not limit the scope of the present application. Among them:

[0012] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0013] Figure 2 is Figure 1 a sectional view at C-C in FIG. 1;

[0014] Figure 3 is a structural schematic diagram of the oil source Q1 adapting to the valve core one of the present application;

[0015] Figure 4 is Figure 3 a structural principle diagram of the oil source Q1 supplying oil after the valve core one is installed in the valve body in FIG. 2;

[0016] Figure 5 is Figure 4 an oil liquid route diagram of the oil source Q1 when the valve core is in the right position in FIG. 2;

[0017] Figure 6 is Figure 4 an oil liquid route diagram of the oil source Q1 when the valve core is in the left position in FIG. 2;

[0018] Figure 7 is a structural schematic diagram of the oil source Q2 adapting to the valve core two of the present application;

[0019] Figure 8 is Figure 7 a structural principle diagram of the oil source Q2 supplying oil after the valve core two is installed in the valve body in FIG. 3;

[0020] Figure 9 is Figure 8 the valve core right position oil source Q2 oil liquid route schematic diagram;

[0021] Figure 10 is Figure 8 the valve core left position oil source Q2 oil liquid route schematic diagram;

[0022] Figure 11 is the structure schematic diagram of the valve core three of the embodiment of the application;

[0023] Figure 12 is Figure 11 the structure principle diagram of the valve core three installed in the valve body rear double oil source oil supply;

[0024] Figure 13 is Figure 12 the valve core right position double oil source oil liquid route schematic diagram;

[0025] Figure 14 is Figure 12 the valve core left position double oil source oil liquid route schematic diagram;

[0026] Figure 15 is the structure schematic diagram of the bidirectional oil passing shaft shoulder of the embodiment of the application;

[0027] In the figure: 1-valve body; 2-valve hole; 3-oil inlet ring channel one; 4-oil inlet ring channel two; 5-oil inlet ring channel; 6-oil outlet channel one; 7-oil outlet channel two; 8-one-way valve; 9-valve core one; 10-valve core two; 11-valve core three; 12-bidirectional oil passing shaft shoulder; 12a-left throttle groove; 12b-right throttle groove; 13-closed cylindrical shaft shoulder; I-logic port one; II-logic port two; III-logic port three; IV-logic port four. DETAILED DESCRIPTION

[0028] The application will be further described below in conjunction with the drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the application are described by way of illustration. It goes without saying that those skilled in the art can recognize that the described embodiments can be modified in various ways without departing from the spirit and scope of the application. Therefore, the drawings and description are essentially illustrative, and are not used to limit the protection scope of the claims.

[0029] As Figure 1 and Figure 2As shown, the load-sensitive arbitrary double-oil-source reconfigurable oil supply logic multi-way valve comprises a valve body 1 and a valve spool cooperating with the valve body 1 to form a logic function, the valve spool being slidably arranged in a valve hole 2 of the valve body 1, the valve body 1 having an oil inlet P1, an oil inlet P2, a working oil outlet A and a working oil outlet B, the oil inlet P1 being connected to an oil source Q1, the oil inlet P2 being connected to an oil source Q2, the valve body 1 being provided with an oil inlet ring channel one 3, an oil inlet ring channel two 4 and a combined oil inlet ring channel 5 outside the periphery of the valve hole 2, the oil inlet ring channel one 3 being in communication with the oil inlet P1, the oil inlet ring channel two 4 being in communication with the oil inlet P2, the oil inlet ring channel one 3 and the oil inlet ring channel two 4 being located on two sides of the combined oil inlet ring channel 5, a logic port one I between the oil inlet ring channel one 3 and the combined oil inlet ring channel 5 being in communication or disconnected under the control of the valve spool, a logic port two II between the oil inlet ring channel two 4 and the combined oil inlet ring channel 5 being in communication or disconnected under the control of the valve spool, the valve body 1 further being provided with a combined oil outlet channel one 6 and a combined oil outlet channel two 7, the other end of the combined oil inlet ring channel 5 being connected to the combined oil outlet channel one 6 and the combined oil outlet channel two 7 through a one-way valve 8, a logic port three III between the combined oil outlet channel one 6 and the working oil outlet A being in communication or disconnected under the control of the valve spool, a logic port four IV between the combined oil outlet channel two 7 and the working oil outlet B being in communication or disconnected under the control of the valve spool, when the valve spool is in a neutral position, the logic port one I, the logic port two II, the logic port three III and the logic port four IV are all disconnected, when the valve spool is in a right position, at least one of the logic port one I and the logic port two II is in communication, the logic port three III is in communication, and the logic port four IV is disconnected, only when the logic port one I is opened, single oil source P1 oil supply can be realized, only when the logic port two II is opened, single oil source P2 oil supply can be realized, and when the logic port one I and the logic port two II are both opened, oil source P1 and oil source P2 mixed double-oil-source oil supply can be realized, when the valve spool is in a left position, at least one of the logic port one I and the logic port two II is in communication, the logic port three III is disconnected, and the logic port four IV is in communication, only when the logic port one I is opened, single oil source P1 oil supply can be realized, only when the logic port two II is opened, single oil source P2 oil supply can be realized, and when the logic port one I and the logic port two II are both opened, oil source P1 and oil source P2 mixed double-oil-source oil supply can be realized, the valve body 1 is further provided with an A-port oil return channel and a B-port oil return channel, when the valve spool is in the right position, the working oil outlet B is in communication with the B-port oil return channel for oil return, and when the valve spool is in the left position, the working oil outlet A is in communication with the A-port oil return channel for oil return.

[0030] The same valve hole 2 in the embodiment can be adapted to three different valve spools to realize three different oil supply modes.

[0031] I. Oil source Q1 single oil supply: the structure of the valve spool one 9 at this time is shown in Figure 3, the valve core one 9 corresponds the logic mouth one I place is equipped with the two-way oil axle shoulder 12 and corresponds the logic mouth two II place is equipped with the closed cylindrical axle shoulder 13, the valve core one 9 is in left position, right position, the two-way oil axle shoulder 12 will the logic mouth one I is connected and the closed cylindrical axle shoulder 13 will the logic mouth two II is disconnected.Oil source Q1 separate oil supply principle see Figure 4 , specifically: when the valve core one 9 is in right position, the logic mouth one I, the logic mouth three III is connected, the logic mouth two II, the logic mouth four IV is disconnected, oil source Q1 through the oil inlet ring channel one 3, the oil inlet ring channel 5 of confluence, the oil outlet oil channel one 6 into to working oil port A, oil source Q1 is working oil port A oil supply, working oil port B through the B port back oil passage back oil, oil flow route see Figure 5 ; when the valve core one 9 is in left position, the logic mouth one I, the logic mouth four IV is opened, the logic mouth two II, the logic mouth three III is closed, oil source Q1 through the oil inlet ring channel one 3, the oil inlet ring channel 5 of confluence, the oil outlet oil channel two 7 into to working oil port B, oil source Q1 is working oil port B oil supply, working oil port A through the A port back oil passage back oil, oil flow route see Figure 6 .

[0032] Two, oil source Q2 separate oil supply: the valve core two 10 structure see Figure 7 , the valve core two 10 corresponds the logic mouth one I place is equipped with the closed cylindrical axle shoulder 13 and corresponds the logic mouth two II place is equipped with the two-way oil axle shoulder 12, the valve core two 10 is in left position, right position, the closed cylindrical axle shoulder 13 will the logic mouth one I is disconnected, the two-way oil axle shoulder 12 will the logic mouth two II is connected. Oil source Q2 separate oil supply principle see Figure 8 , specifically: when the valve core two 10 is in right position, the logic mouth two II, the logic mouth three III is connected, the logic mouth one I, the logic mouth four IV is disconnected, oil source Q2 through the oil inlet ring channel two 4, the oil inlet ring channel 5 of confluence, the oil outlet oil channel one 6 into to working oil port A, oil source Q2 is working oil port A oil supply, working oil port B through the B port back oil passage back oil, oil flow route see Figure 9 ; when the valve core two 10 is in left position, the logic mouth two II, the logic mouth four IV is connected, the logic mouth one I, the logic mouth three III is disconnected, oil source Q2 through the oil inlet ring channel two 4, the oil inlet ring channel 5 of confluence, the oil outlet oil channel two 7 into to working oil port B, oil source Q2 is working oil port B oil supply, working oil port A through the A port back oil passage back oil, oil flow route see Figure 10 .

[0033] Three, oil source Q1 and Q2 common oil supply: the valve core three 11 structure see Figure 11, the valve core three 11 corresponds to the logic port one I, the logic port two II is equipped with a bidirectional oil passing shaft shoulder 12, the valve core three 11 is in left position, right position, the bidirectional oil passing shaft shoulder 12 will be connected with the logic port one I, the logic port two II. Oil source Q1 and Q2 common oil supply schematic diagram see Figure 12 , specifically: when the valve core three 11 is in right position, the logic port one I, the logic port two II, the logic port three III is connected, the logic port four IV is disconnected, oil source Q1 enters into the combined oil inlet oil channel through the oil inlet ring channel one 3, oil source Q2 enters into the combined oil inlet ring channel 5 through the oil inlet ring channel two 4, after confluence, it enters into the working oil port A through the combined oil outlet oil channel one 6, double oil source supplies oil for working oil port A, working oil port B returns oil through the B port oil return channel, oil flow route see Figure 13 ; when the valve core three 11 is in left position, the logic port one I, the logic port two II, the logic port four IV is connected, the logic port three III is disconnected, oil source Q1 enters into the combined oil inlet oil channel through the oil inlet ring channel one 3, oil source Q2 enters into the combined oil inlet ring channel 5 through the oil inlet ring channel two 4, after confluence, it enters into the working oil port B through the combined oil outlet oil channel two 7, double oil source supplies oil for working oil port B, working oil port A returns oil through the A port oil return channel, oil flow route see Figure 14 .

[0034] See Figure 15 , the left side of the bidirectional oil passing shaft shoulder 12 is equipped with a left throttle groove 12a, the right side of the bidirectional oil passing shaft shoulder 12 is equipped with a right throttle groove 12b, the left throttle groove 12a and the right throttle groove 12b are arranged in circumferential staggered manner, the inside end of the left throttle groove 12a extends towards right end, the inside end of the right throttle groove 12b extends towards left end. The longitudinal axis of the left throttle groove 12a and the right throttle groove 12b is parallel to the axis of the valve core and uniformly distributed along the axis of the valve core. The throttle groove is a structure with decreasing cross section, the throttle groove is gradually increased or decreased with the opening of the valve rod moving axially, the throttle groove can be circular arc, V-shaped or other shapes. The throttle groove realizes the smooth change of flow by changing the position of the throttle groove to change the cross-sectional area of the throttle groove. Especially when the oil source P1 and P2 supply oil together, by adjusting the position of the valve core, the opening area of the throttle groove is changed to realize the demand of flow change, the function of double oil source proportional confluence supply can be realized.

[0035] When the multi-way valve has three same valve holes 2, the structure of the three valve holes 2 and the corresponding oil circuit arrangement are completely same, when three valve holes 2 are respectively matched with three different valve rods, three different oil supply modes can be realized on the same valve body 1, the purpose of changing oil source is achieved by changing the valve core, the design of double oil inlet oil channel improves the reconstruction and selectivity of multi-way valve function, makes the adaptability and operability of the valve better.

[0036] The movement of the valve core in the above principle can be controlled by electric control, electro-hydraulic control or manual control in the prior art, which is common knowledge and will not be described here.

[0037] In the embodiment, the oil source Q1 and the oil source Q2 can be supplied by different oil pumps.

[0038] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A load sensitive arbitrary dual oil source reconfigurable oil supply logic multi-way valve, comprising a valve body and a spool cooperating with the valve body to form a logic function, the valve body having an oil inlet port P1, an oil inlet port P2, a working oil port A, a working oil port B, characterized in that: The oil inlet P1 is connected to the oil source Q1, the oil inlet P2 is connected to the oil source Q2, the valve body is provided with an oil inlet ring channel one, an oil inlet ring channel two and a combined oil inlet ring channel outside the valve hole, the oil inlet ring channel one is communicated with the oil inlet P1, the oil inlet ring channel two is communicated with the oil inlet P2, the oil inlet ring channel one and the oil inlet ring channel two are located on both sides of the combined oil inlet ring channel, the logical port one between the oil inlet ring channel one and the combined oil inlet ring channel is communicated or disconnected by the valve core, the logical port two between the oil inlet ring channel two and the combined oil inlet ring channel is communicated or disconnected by the valve core; the valve body is further provided with a combined oil outlet channel one and a combined oil outlet channel two, the other end of the combined oil inlet ring channel is connected to the combined oil outlet channel one and the combined oil outlet channel two through a one-way valve, the logical port three between the combined oil outlet channel one and the working oil port A is communicated or disconnected by the valve core, the logical port four between the combined oil outlet channel two and the working oil port B is communicated or disconnected by the valve core; when the valve core is in the middle position, the logical port one, the logical port two, the logical port three and the logical port four are disconnected; when the valve core is in the right position, at least one of the logical port one and the logical port two is communicated, the logical port three is communicated, and the logical port four is disconnected; when the valve core is in the left position, at least one of the logical port one and the logical port two is communicated, the logical port three is disconnected, and the logical port four is communicated. ​ 2. The load sensing, any two oil source reconfigurable oil routing logic multiple valve of claim 1, wherein: The valve core is provided with a bidirectional oil passing shoulder corresponding to the logical port one and a closed cylindrical shoulder corresponding to the logical port two, when the valve core is in the left position or the right position, the bidirectional oil passing shoulder communicates the logical port one and the closed cylindrical shoulder disconnects the logical port two.

3. The load sensing, two oil source reconfigurable oil routing logic multiple valve of claim 1 wherein: The valve core is provided with a closed cylindrical shoulder corresponding to the logical port one and a bidirectional oil passing shoulder corresponding to the logical port two, when the valve core is in the left position or the right position, the closed cylindrical shoulder disconnects the logical port one and the bidirectional oil passing shoulder communicates the logical port two.

4. The load sensing, two oil source reconfigurable oil routing logic multiple valve of claim 1, wherein: The valve core is provided with a bidirectional oil passing shoulder corresponding to the logical port one and a bidirectional oil passing shoulder corresponding to the logical port two, when the valve core is in the left position or the right position, the bidirectional oil passing shoulder communicates the logical port one and the logical port two.

5. The load sensing, any two oil source reconfigurable oil routing logic multiple spool valve of any of claims 2 to 4, wherein: The left side end of the bidirectional oil passing shoulder is provided with a left throttling groove, the right side end of the bidirectional oil passing shoulder is provided with a right throttling groove, the left throttling groove and the right throttling groove are arranged in a circumferential staggered manner, the inner side end of the left throttling groove extends towards the right end, and the inner side end of the right throttling groove extends towards the left end.

6. The load sensing, two oil source reconfigurable oil routing logic multiple valve of claim 1, wherein: The valve body is further provided with an A port oil return channel and a B port oil return channel, when the valve core is in the right position, the working oil port B is communicated with the B port oil return channel, and when the valve core is in the left position, the working oil port A is communicated with the A port oil return channel.

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