A hydraulic system with hybrid control of a proportional valve and a switching valve

Abstract

The present invention discloses a hybrid control hydraulic system of a proportional valve and a switch valve, which relates to the technical field of hydraulic systems and includes a valve body. The present invention drives a rotating unit to rotate and advance in a first groove cylinder or a second groove cylinder through a driving unit, and causes a movable unit to move on a fixed unit through an adjusting unit, so that the first groove cylinder and the second groove cylinder produce two embracing states, so that when the rotating unit cooperates with the first groove cylinder, the valve core is quickly advanced to achieve the use effect of the switch valve, and when the rotating unit cooperates with the second groove cylinder, the valve core is slowly and accurately advanced to achieve the use effect of the proportional valve, which greatly reduces the complex logical judgment and tedious signal allocation process in the control link, thereby significantly simplifying the control logic of the entire hydraulic system, reducing the requirements for the hardware resources and software algorithm complexity of the control system, and improving the reliability and real-time performance of the control.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic systems, and more particularly to a proportional valve and a switch valve hybrid control hydraulic system. Background Art

[0002] In modern engineering and industrial manufacturing, hydraulic systems, as a key means of power transmission and control, are widely used in various types of mechanical equipment, such as machine tools, construction machinery, and aerospace equipment. Their performance directly affects the operating accuracy, efficiency, and reliability of the entire equipment.

[0003] In traditional hydraulic system design, proportional valves and on-off valves are typically arranged separately. This layout, based on the traditional functional modular design concept, aims to achieve precise proportional control of hydraulic flow, pressure, and other parameters by the proportional valve, while the on-off valve simply switches the hydraulic oil circuit on and off.

[0004] However, with the continuous development of industrial technology, the control requirements for hydraulic systems of equipment are becoming increasingly complex and diverse. In actual application scenarios, this traditional model of separately arranging multiple groups of valve bodies has exposed a series of significant problems.

[0005] First, from the perspective of control complexity, since proportional valves and on-off valves are separately installed and numerous, multiple groups of valve bodies need to be independently controlled and monitored. This requires the control system to have powerful processing capabilities and complex control logic to coordinate the collaborative operation of different valve bodies under different working conditions. For example, in a device that needs to frequently switch the working mode of the hydraulic actuator, it is necessary to precisely control the proportional valve to achieve gradual flow adjustment to meet the speed control requirements of the actuator, and accurately operate the on-off valve to change the connection path of the oil circuit. The interactive control and timing coordination between multiple groups of valve bodies become extremely complex, and the slightest mistake may lead to system failure or abnormal operation.

[0006] Secondly, the space occupied by the separately arranged valve bodies is significantly disadvantageous. This is especially true in applications where compact internal space is crucial, such as hydraulic stations for precision machine tools or hydraulic modules for aerospace equipment. Multiple valve bodies and their connecting piping occupy valuable space, increasing the overall size and weight of the equipment, hindering its miniaturization and lightweighting. This also complicates system installation, maintenance, and repair.

[0007] Furthermore, from a system cost perspective, the design of multiple independent valve bodies means more component procurement costs, higher manufacturing costs, and subsequent maintenance costs. Each valve body requires a corresponding drive device, sensor, and connection interface. This additional hardware not only increases the initial investment, but also increases the probability of failure during long-term operation due to the large number of components, further increasing the equipment's operating and maintenance costs and the risk of downtime.

[0008] In summary, given the numerous challenges inherent in existing hydraulic systems, such as high control difficulty, uncompacted spatial layout, and high costs, resulting from the separate placement of proportional valves and the need to control multiple valve groups, there is an urgent need for an innovative hydraulic system design. Specifically, a valve body capable of flexibly adjusting the control switch or ratio, integrating the functions of the proportional and on-off valves, effectively simplifies control logic, optimizes spatial layout, and reduces costs. This approach will better meet the comprehensive requirements of modern industrial equipment for high performance, high reliability, miniaturization, and low cost in hydraulic systems, and promote further innovation and development in various fields of hydraulic technology. To address this, we propose a hybrid hydraulic system controlled by proportional and on-off valves. Summary of the Invention

[0009] The object of the present invention is to provide a proportional valve and a switch valve hybrid control hydraulic system to solve the above technical problems.

[0010] To solve the above technical problems, the present invention provides the following technical solution: a proportional valve and switch valve hybrid control hydraulic system, comprising a valve body, a valve cavity being provided inside the valve body, a first port being provided at one end of the valve body, a second port being provided at the other end of the valve body, a third port being provided at the top end of the valve body, a valve cover being connected to the third port via bolts, a bearing unit being provided on the valve cover, an actuator being provided on the bearing unit, a valve core being connected to one end of the actuator away from the bearing unit, and the valve core being movably inserted into the third port;

[0011] The actuator includes a driving unit, a screw-in unit, a fixed unit, a movable unit, a rotating unit, a first grooved drum, a second grooved drum and an adjusting unit. The driving unit is arranged at the top of the carrying unit, one end of the screw-in unit is connected to the output end of the driving unit, and the other end of the screw-in unit is connected to the valve core. The fixed unit is arranged on the valve cover, the movable unit is movably arranged on the fixed unit, and the rotating unit is rotatably connected to the bottom end of the fixed unit. The first grooved drum and the second grooved drum are both arranged on the movable unit. The adjusting unit is arranged on the valve cover and is meshedly connected to the bottom end of the rotating unit.

[0012] Preferably, the driving unit includes a support frame and a brushed DC motor, the support frame is connected to the carrying unit, the brushed DC motor is arranged on the support frame, and the output end of the brushed DC motor is connected to the precession unit.

[0013] Preferably, the precession unit includes an output shaft and a rotating ball, one end of the output shaft is connected to the output end of the brushed DC motor, the other end of the output shaft is connected to the valve core, and the rotating ball is rotatably arranged on the outer wall of the output shaft.

[0014] Preferably, the fixed unit includes an inner ring, an inner slot, an outer ring and an outer slot, the inner ring and the outer ring are fixedly connected to the valve cover, the inner slot is opened on the inner ring in a circular shape with equal intervals, the outer slot is opened on the outer ring in a circular shape with equal intervals, the movable unit is movably inserted in the inner slot and the outer slot, and the rotating unit is rotatably connected to the bottom ends of the inner ring and the outer ring.

[0015] Preferably, the movable unit includes an insert, a straight tooth groove and a gear. The insert is movably inserted into the inner slot and the outer slot. The straight tooth groove is opened on the insert. The gear is rotated in a circular shape with equal intervals and is arranged on the valve cover near the inner wall of the inner ring and the inner wall of the outer ring. The gear is meshed with the straight tooth groove.

[0016] Preferably, the rotating unit includes an inner rotating circle, an outer rotating circle, inner teeth and bottom teeth, the inner rotating circle is rotatably connected to the bottom end of the inner ring, the outer rotating circle is rotatably connected to the bottom end of the outer ring, the inner teeth are opened on the inner walls of the inner rotating circle and the outer rotating circle, the bottom teeth are opened on the bottom ends of the inner rotating circle and the outer rotating circle, the inner teeth are meshedly connected to the gear, and the bottom teeth are meshedly connected to the adjusting unit.

[0017] Preferably, the first grooved barrel includes several first barrel blocks, the inner wall of the first barrel block is provided with a first curved groove, four of the first curved grooves cooperate to form a first spiral slideway, the first barrel block is connected to four of the insertion strips, and the first curved groove is adapted to the size of the rotating sphere.

[0018] Preferably, the second grooved barrel includes a plurality of second barrel blocks, the inner wall of each of the second barrel blocks is provided with a second curved groove, four of the second curved grooves cooperate to form a second spiral channel, the second barrel blocks are connected to the other four of the inserts, and the second curved grooves are adapted to the size of the rotating sphere;

[0019] Wherein, the first barrel block and the second barrel block are adjacently and cross-arranged on the inserting strip.

[0020] Preferably, a through hole is provided on the valve cover, an adjustment groove is provided on one side of the top of the valve cover, a placement groove is provided on the inner wall of the adjustment groove, a support plate is provided at the bottom end of the through hole, and the adjustment unit is provided on the adjustment groove, the placement groove and the support plate.

[0021] Preferably, the adjustment unit includes a motor, a bevel gear A, a bevel gear B, a rotating rod, a driving gear, an electric push rod and a connecting rod. The motor is arranged on the support plate, the bevel gear A is connected to the output end of the motor, the rotating rod is rotatably arranged on the adjustment slot, the bevel gear B is sleeved on one end of the rotating rod, the bevel gear A is meshed with the bevel gear B, the driving gear is slidingly sleeved on the end of the rotating rod away from the bevel gear B, the electric push rod is arranged on the placement slot, one end of the connecting rod is connected to the output end of the electric push rod, and the other end of the connecting rod is connected to the driving gear, and the driving gear is adapted to the bottom gear.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention drives the screw-in unit to rotate and advance in the first grooved drum or the second grooved drum through the driving unit, and causes the movable unit to move on the fixed unit through the adjusting unit, so that the first grooved drum and the second grooved drum produce two embracing states, so that when the screw-in unit cooperates with the first grooved drum, the valve core is quickly advanced to achieve the use effect of the switch valve; when the screw-in unit cooperates with the second grooved drum, the valve core is slowly and accurately advanced to achieve the use effect of the proportional valve, which greatly reduces the complex logical judgment and tedious signal allocation process in the control link, thereby significantly simplifying the control logic of the entire hydraulic system, reducing the requirements for the hardware resources and software algorithm complexity of the control system, and improving the reliability and real-time performance of the control.

[0024] 2. The integrated valve body of the present invention combines the functions of a proportional valve and a switch valve into one, and can flexibly realize the on-off control of the hydraulic oil circuit and the proportional adjustment of flow and pressure on the same valve body according to system requirements. This multifunctional integrated design enables the hydraulic system to better adapt to the working requirements under different working conditions, reduces the additional valve bodies and connecting pipelines required for function switching, and improves the overall reliability and working efficiency of the system.

[0025] 3. Compared with the traditional hydraulic system in which the proportional valve and the switch valve are arranged separately, the integrated valve body of the present invention greatly reduces the number of valve bodies and the complexity and length of the connecting pipelines, which makes the layout of the hydraulic system inside the equipment more compact and reasonable, saves a lot of space, is conducive to the miniaturization design of the equipment and the efficient use of space resources, and is particularly suitable for industrial equipment and mobile mechanical equipment with strict space requirements.

[0026] 4. From the perspective of procurement cost, the batch production of integrated valve bodies in the present invention can reduce the manufacturing cost of a single valve body, while reducing the procurement demand for two different valve bodies, namely proportional valves and switch valves; from the perspective of manufacturing cost analysis, the reduction in the number of valve bodies and connecting parts simplifies the manufacturing process and assembly process, and reduces labor costs and material costs; from the perspective of maintenance cost, fewer valve bodies means fewer failure points and maintenance workload, and technicians only need to master the maintenance technology of one integrated valve body, which reduces the maintenance difficulty and cost, thereby reducing the total cost of the hydraulic system throughout its life cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of one side of the present invention;

[0028] Figure 2 This is a schematic diagram of the overall structure of the other side of the present invention;

[0029] Figure 3 Schematic diagram of the internal structure of the valve body of the present invention;

[0030] Figure 4 This is a schematic diagram of the actuator and valve core structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the actuator part of the present invention;

[0032] Figure 6 This is a schematic diagram of the actuator adjustment state structure of the present invention;

[0033] Figure 7 Schematic diagram of the structure of the precession unit of the present invention;

[0034] Figure 8 This is a schematic diagram of the split structure of the first grooved drum of the present invention;

[0035] Figure 9 This is a schematic diagram of the split structure of the second grooved drum of the present invention;

[0036] Figure 10 This is a schematic diagram of the spiral path structure of the first spiral slideway of the present invention;

[0037] Figure 11 Schematic diagram of the spiral path structure of the second spiral slideway of the present invention;

[0038] Figure 12 This is a schematic diagram of the fixed unit, movable unit, rotating unit and valve cover structure of the present invention;

[0039] Figure 13 This is a schematic diagram of one set of structures of the fixed unit and the movable unit of the present invention;

[0040] Figure 14This is a schematic structural diagram of the rotary unit, valve cover and regulating unit of the present invention;

[0041] Figure 15 It is a schematic structural diagram of the rotating unit and the adjusting unit of the present invention.

[0042] Description of the numbers in the figure:

[0043] 1. Valve body; 2. Valve chamber; 3. First port; 4. Second port; 5. Third port; 6. Valve cover; 7. Carrying unit; 8. Actuator; 9. Valve core;

[0044] 601, through hole; 602, adjustment slot; 603, placement slot; 604, support plate;

[0045] 801, driving unit; 802, precession unit; 803, fixed unit; 804, movable unit; 805, rotating unit; 806, first grooved drum; 807, second grooved drum; 808, adjusting unit;

[0046] 8011, support frame; 8012, brushed DC motor;

[0047] 8021, output shaft; 8022, rotating sphere;

[0048] 8031, inner ring; 8032, inner slot; 8033, outer ring; 8034, outer slot;

[0049] 8041, cutting strip; 8042, straight tooth groove; 8043, gear;

[0050] 8051, inner circle; 8052, outer circle; 8053, inner teeth; 8054, bottom teeth;

[0051] 8061, first cylinder block; 8062, first curved groove; 8063, first spiral slide;

[0052] 8071, second cylinder block; 8072, second curved groove; 8073, second spiral channel;

[0053] 8081, motor; 8082, bevel gear A; 8083, bevel gear B; 8084, rotating rod; 8085, driving gear; 8086, electric push rod; 8087, connecting rod. DETAILED DESCRIPTION

[0054] like Figures 1 to 15As shown, the present invention relates to a proportional valve and switch valve mixed control hydraulic system, including a valve body 1, a valve chamber 2 is provided inside the valve body 1, a first port 3 is provided at one end of the valve body 1, a second port 4 is provided at the other end of the valve body 1, a third port 5 is provided at the top of the valve body 1, a valve cover 6 is connected to the third port 5 by bolts, a bearing unit 7 is provided on the valve cover 6, an actuator 8 is provided on the bearing unit 7, a valve core 9 is connected to the end of the actuator 8 away from the bearing unit 7, and the valve core 9 is movably inserted into the third port 5;

[0055] The actuator 8 includes a driving unit 801, a screw-in unit 802, a fixed unit 803, a movable unit 804, a rotating unit 805, a first grooved cylinder 806, a second grooved cylinder 807 and an adjusting unit 808. The driving unit 801 is arranged at the top of the carrying unit 7, one end of the screw-in unit 802 is connected to the output end of the driving unit 801, and the other end of the screw-in unit 802 is connected to the valve core 9, the fixed unit 803 is arranged on the valve cover 6, the movable unit 804 is movably arranged on the fixed unit 803, the rotating unit 805 is rotatably connected to the bottom end of the fixed unit 803, the first grooved cylinder 806 and the second grooved cylinder 807 are both arranged on the movable unit 804, and the adjusting unit 808 is arranged on the valve cover 6 and is meshedly connected to the bottom end of the rotating unit 805.

[0056] The present invention drives the precession unit 802 to rotate and advance in the first groove cylinder 806 or the second groove cylinder 807 through the driving unit 801, and causes the movable unit 804 to move on the fixed unit 803 through the adjusting unit 808, so that the first groove cylinder 806 and the second groove cylinder 807 produce two embracing states, so that when the precession unit 802 cooperates with the first groove cylinder 806, the valve core 9 is quickly advanced to achieve the use effect of the switch valve, and when the precession unit 802 cooperates with the second groove cylinder 807, the valve core 9 is slowly and accurately advanced to achieve the use effect of the proportional valve, which greatly reduces the complex logical judgment and tedious signal allocation process in the control link, thereby significantly simplifying the control logic of the entire hydraulic system, reducing the requirements for the hardware resources and software algorithm complexity of the control system, and improving the reliability and real-time performance of the control.

[0057] In an embodiment of the present invention, the drive unit 801 includes a support frame 8011 and a brushed DC motor 8012. The support frame 8011 is connected to the carrier unit 7, and the brushed DC motor 8012 is mounted on the support frame 8011. The output end of the brushed DC motor 8012 is connected to the precession unit 802. The brushed DC motor 8012 used in the present invention has the advantages of low cost, mature technology, and high versatility of consumables. The brushed DC motor 8012 does not require the high-precision and high-cost motor of traditional proportional valves. Its cost advantage and stable performance significantly reduce the cost of use for enterprises.

[0058] In an embodiment of the present invention, the precession unit 802 includes an output shaft 8021 and a rotating ball 8022. One end of the output shaft 8021 is connected to the output end of a brushed DC motor 8012, and the other end of the output shaft 8021 is connected to the valve core 9. The rotating ball 8022 is rotatably mounted on the outer wall of the output shaft 8021. In the present invention, the output shaft 8021 is driven to rotate by the brushed DC motor 8012, and the output shaft 8021 drives the rotating ball 8022 to rotate as a whole. In the present invention, the output shaft 8021 and the output end of the brushed DC motor 8012 are in a rotating and sliding connection. Therefore, the output shaft 8021 and the motor output end have a sliding space, and the rotating ball 8022 is rotatably embedded in a ball groove provided on the outer wall of the output shaft 8021.

[0059] In an embodiment of the present invention, the fixed unit 803 includes an inner ring 8031, an inner slot 8032, an outer ring 8033 and an outer slot 8034. The inner ring 8031 and the outer ring 8033 are fixedly connected to the valve cover 6. The inner slot 8032 is annularly arranged at equal intervals on the inner ring 8031. The outer slot 8034 is annularly arranged at equal intervals on the outer ring 8033. The movable unit 804 is movably inserted into the inner slot 8032 and the outer slot 8034. The rotating unit 805 is rotatably connected to the bottom ends of the inner ring 8031 and the outer ring 8033. Figure 12 and Figure 13 As shown, the inner ring 8031 of the present invention is provided with eight inner slots 8032 , and the outer ring 8033 is provided with eight outer slots 8034 . The inner slots 8032 and the outer slots 8034 are L-shaped and open at the top.

[0060] The movable unit 804 includes an insertion strip 8041, a straight tooth groove 8042 and a gear 8043. The insertion strip 8041 is movably inserted into the inner slot 8032 and the outer slot 8034. The straight tooth groove 8042 is provided on the insertion strip 8041. The gear 8043 is rotatably arranged in a circular shape with equal intervals on the valve cover 6 near the inner wall of the inner ring 8031 and the inner wall of the outer ring 8033. The gear 8043 is meshed with the straight tooth groove 8042. In the present invention, the inner end of the insertion strip 8041 is movably inserted into the inner slot 8032, and the outer end of the insertion strip 8041 is movably inserted into the outer slot 8034. Four gears 8043 are rotatably arranged on the valve cover 6 near the inner wall of the inner ring 8031, and another four gears 8043 are rotatably arranged on the valve cover 6 near the inner wall of the outer ring 8033. When the rotating unit 805 drives the gears 8043 to rotate, the top ends of the gears 8043 engage with the straight tooth grooves 8042, so that the straight tooth grooves 8042 drive the insertion strip 8041 to move on the inner slot 8032 or the outer slot 8034.

[0061] As another embodiment of the present invention, the rotating unit 805 includes an inner rotating circle 8051, an outer rotating circle 8052, inner teeth 8053 and bottom teeth 8054. The inner rotating circle 8051 is rotatably connected to the bottom end of the inner ring 8031, the outer rotating circle 8052 is rotatably connected to the bottom end of the outer ring 8033, the inner teeth 8053 are opened on the inner walls of the inner rotating circle 8051 and the outer rotating circle 8052, the bottom teeth 8054 are opened on the bottom ends of the inner rotating circle 8051 and the outer rotating circle 8052, the inner teeth 8053 are meshedly connected to the gear 8043, and the bottom teeth 8054 are meshedly connected to the adjusting unit 808. The inner rotating circle 8051 and the outer rotating circle 8052 in the present invention are both provided with inner teeth 8053 and bottom teeth 8054. When the adjustment unit 808 drives the bottom teeth 8054 to rotate, the bottom teeth 8054 drives the inner rotating circle 8051 or the outer rotating circle 8052 to rotate, and the inner rotating circle 8051 or the outer rotating circle 8052 drives the inner teeth 8053 to rotate, and the inner teeth 8053 drives the gear 8043 to rotate.

[0062] As another embodiment of the present invention, the first grooved barrel 806 includes a plurality of first barrel blocks 8061. A first curved groove 8062 is provided on the inner wall of the first barrel block 8061. The four first curved grooves 8062 cooperate to form a first spiral slideway 8063. The first barrel block 8061 is connected to four of the insertion strips 8041. The first curved grooves 8062 are adapted to the size of the rotating sphere 8022. In the present invention, when the adjustment unit 808 drives the inner rotating circle 8051 to rotate, the inner rotating circle 8051 drives the inner teeth 8053 to rotate, and the inner teeth 8053 drives the gear 8043 to rotate. The top of the gear 8043 engages with the straight tooth groove 8042, so that the straight tooth groove 8042 drives the inserting bar 8041 to move on the inner slot 8032. The inserting bar 8041 drives the four first barrel blocks 8061 provided at its top to move synchronously, realizing inward contraction or expansion. When the four first barrel blocks 8061 are synchronously contracted, the first curved grooves 8062 provided on the four first barrel blocks 8061 form a first spiral slideway 8063, as shown in FIG. Figure 8 and Figure 10 As shown, when the brushed DC motor 8012 drives the output shaft 8021 and the rotating ball 8022 to rotate, the rotating ball 8022 slides in the first spiral slide 8063. Due to the limit of the rotating ball 8022 and the first spiral slide 8063 and the fact that the first spiral slide 8063 has two spiral circles, the output shaft 8021 drives the valve core 9 to descend rapidly, thereby achieving the use effect of the switch valve.

[0063] As another embodiment of the present invention, the second grooved barrel 807 includes a plurality of second barrel blocks 8071. Second curved grooves 8072 are formed on the inner walls of the second barrel blocks 8071. The four second curved grooves 8072 cooperate to form a second spiral channel 8073. The second barrel blocks 8071 are connected to the other four insertion strips 8041. The second curved grooves 8072 are adapted to the size of the rotating sphere 8022. The first barrel blocks 8061 and the second barrel blocks 8071 are adjacently and cross-arranged on the insertion strip 8041. In the present invention, when the adjustment unit 808 drives the outer rotating ring 8052 to rotate, the outer rotating ring 8052 drives the inner teeth 8053 to rotate, and the inner teeth 8053 drives the gear 8043 to rotate. The top of the gear 8043 engages with the straight tooth groove 8042, so that the straight tooth groove 8042 drives the inserting bar 8041 to move on the outer slot 8034. The inserting bar 8041 drives the four second barrel blocks 8071 provided at its top to move synchronously, realizing inward contraction or expansion. When the four second barrel blocks 8071 are synchronously contracted, the second curved grooves 8072 provided on the four second barrel blocks 8071 form a second spiral channel 8073, as shown in FIG. Figure 9 and Figure 11 As shown, when the brushed DC motor 8012 drives the output shaft 8021 and the rotating ball 8022 to rotate, the rotating ball 8022 slides in the second spiral channel 8073. Due to the limit of the rotating ball 8022 and the second spiral channel 8073 and the fact that the second spiral channel 8073 has a total of ten spiral turns, the output shaft 8021 drives the valve core 9 to slowly descend, thereby achieving the use effect of the proportional valve.

[0064] As another embodiment of the present invention, a through hole 601 is provided on the valve cover 6, an adjustment groove 602 is provided on one side of the top of the valve cover 6, a placement groove 603 is provided on the inner wall of the adjustment groove 602, a support plate 604 is provided at the bottom end of the through hole 601, and the adjustment unit 808 is provided on the adjustment groove 602, the placement groove 603 and the support plate 604.

[0065] As another embodiment of the present invention, the adjustment unit 808 includes a motor 8081, a bevel gear A8082, a bevel gear B8083, a rotating rod 8084, a driving gear 8085, an electric push rod 8086 and a connecting rod 8087. The motor 8081 is arranged on the support plate 604, the bevel gear A8082 is connected to the output end of the motor 8081, the rotating rod 8084 is rotatably arranged on the adjustment slot 602, the bevel gear B8083 is sleeved on one end of the rotating rod 8084, the bevel gear A8082 is meshed with the bevel gear B8083, the driving gear 8085 is slidably sleeved on the end of the rotating rod 8084 away from the bevel gear B8083, the electric push rod 8086 is arranged on the placement slot 603, one end of the connecting rod 8087 is connected to the output end of the electric push rod 8086, and the other end of the connecting rod 8087 is connected to the driving gear 8085, and the driving gear 8085 is adapted to the bottom gear 8054. In the present invention, the electric push rod 8086 drives the connecting rod 8087 to move, and the connecting rod 8087 drives the driving gear 8085 to move on the rotating rod 8084, so that the driving gear 8085 can be selected to mesh with the bottom teeth 8054 of the inner rotating circle 8051 or the bottom teeth 8054 of the outer rotating circle 8052. Figure 15 As shown;

[0066] The driving gear 8085 and the rotating rod 8084 in the present invention are slidably but non-rotatably connected. The driving motor 8081 drives the bevel gear A8082 to rotate, the bevel gear A8082 drives the bevel gear B8083 to rotate, the bevel gear B8083 drives the rotating rod 8084 to rotate, the rotating rod 8084 drives the driving gear 8085 to rotate, and the driving gear 8085 engages with the bottom gear 8054 to drive the inner rotating circle 8051 or the outer rotating circle 8052 to rotate.

[0067] Working Principle: This embodiment provides a method for regulating a hydraulic system using a hybrid control system of a proportional valve and an on-off valve, comprising the following steps:

[0068] S1, valve body state adjustment operation;

[0069] Select the specific usage state according to the function of the proportional valve or switch valve required;

[0070] S1.1. If the valve state needs to be switched, first drive the electric push rod 8086 to move the connecting rod 8087. The connecting rod 8087 drives the driving gear 8085 to move on the rotating rod 8084. The driving gear 8085 is selected to engage with the bottom tooth 8054 of the inner rotating circle 8051. The driving motor 8081 drives the bevel gear A 8082 to rotate. The bevel gear A 8082 drives the bevel gear B 8083 to rotate. The bevel gear B 8083 drives the rotating rod 8084 to rotate. The rotating rod 8084 drives the driving gear 8085 to rotate. The driving gear 8085 engages with the bottom tooth 8054 to rotate the inner rotating circle 8051. The inner rotating circle 8051 drives the inner teeth 8053 to rotate. The inner teeth 8053 drive the gear 8043 to rotate. The top of the gear 8043 engages with the straight tooth groove 8042. When the straight tooth groove 8042 is closed, it drives the insertion strip 8041 to move on the inner slot 8032. The insertion strip 8041 drives the four first barrel blocks 8061 provided on the top thereof to move synchronously, thereby achieving inward contraction or expansion. When the four first barrel blocks 8061 are synchronously contracted, the first curved grooves 8062 provided on the four first barrel blocks 8061 form a first spiral slideway 8063. When the brushed DC motor 8012 drives the output shaft 8021 and the rotating ball 8022 to rotate, the rotating ball 8022 slides in the first spiral slideway 8063. Because the rotating ball 8022 and the first spiral slideway 8063 limit the position, and the first spiral slideway 8063 has two spiral turns, the output shaft 8021 drives the valve core 9 to descend rapidly, achieving the use effect of the on-off valve.

[0071] S1.2. If a proportional valve state is required, first drive the electric push rod 8086 to move the connecting rod 8087. The connecting rod 8087 drives the driving gear 8085 to move on the rotating rod 8084. The driving gear 8085 is selected to engage with the bottom teeth 8054 of the outer rotating ring 8052. The outer rotating ring 8052 drives the inner teeth 8053 to rotate. The inner teeth 8053 drives the gear 8043 to rotate. The top of the gear 8043 engages with the straight tooth groove 8042, so that the straight tooth groove 8042 drives the insert 8041 to move on the outer slot 8034. The insert 8041 drives the four second barrel blocks 807 arranged at its top. 1 moves synchronously to achieve inward or outward movement. When the four second cylinder blocks 8071 retract synchronously, the second curved grooves 8072 provided on the four second cylinder blocks 8071 form a second spiral channel 8073. When the brushed DC motor 8012 drives the output shaft 8021 and the rotating ball 8022 to rotate, the rotating ball 8022 slides in the second spiral channel 8073. Due to the limit of the rotating ball 8022 and the second spiral channel 8073 and the fact that the second spiral channel 8073 has a total of ten spiral turns, the output shaft 8021 drives the valve core 9 to slowly descend, achieving the use effect of the proportional valve.

[0072] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A proportional valve and switch valve hybrid control hydraulic system, characterized in that: The invention comprises a valve body (1), wherein a valve cavity (2) is provided inside the valve body (1), a first opening (3) is provided at one end of the valve body (1), a second opening (4) is provided at the other end of the valve body (1), a third opening (5) is provided at the top end of the valve body (1), a valve cover (6) is connected to the third opening (5) by bolts, a bearing unit (7) is provided on the valve cover (6), an actuator (8) is provided on the bearing unit (7), a valve core (9) is connected to the end of the actuator (8) away from the bearing unit (7), and the valve core (9) is movably inserted into the third opening (5); The actuator (8) comprises a driving unit (801), a precession unit (802), a fixing unit (803), a movable unit (804), a rotating unit (805), a first grooved drum (806), a second grooved drum (807) and an adjusting unit (808), wherein the driving unit (801) is arranged at the top of the bearing unit (7), one end of the precession unit (802) is connected to the output end of the driving unit (801), and the other end of the precession unit (802) is connected to the output end of the driving unit (801). On the valve core (9), the fixed unit (803) is provided on the valve cover (6), the movable unit (804) is movably provided on the fixed unit (803), the rotating unit (805) is rotatably connected to the bottom end of the fixed unit (803), the first grooved cylinder (806) and the second grooved cylinder (807) are both provided on the movable unit (804), and the adjusting unit (808) is provided on the valve cover (6) and is meshedly connected to the bottom end of the rotating unit (805); The precession unit (802) comprises an output shaft (8021) and a rotating sphere (8022), wherein the rotating sphere (8022) is rotatably disposed on the outer wall of the output shaft (8021); The fixed unit (803) includes an inner ring (8031), an inner slot (8032), an outer ring (8033) and an outer slot (8034); the inner ring (8031) and the outer ring (8033) are both fixedly connected to the valve cover (6); the inner slot (8032) is provided on the inner ring (8031) in an annular shape and at equal intervals; the outer slot (8034) is provided on the outer ring (8033) in an annular shape and at equal intervals; the movable unit (804) is movably inserted into the inner slot (8032) and the outer slot (8034); and the rotating unit (805) is rotatably connected to the bottom ends of the inner ring (8031) and the outer ring (8033); The movable unit (804) comprises an insert (8041), a straight tooth groove (8042) and a gear (8043); the insert (8041) is movably inserted into the inner slot (8032) and the outer slot (8034); the straight tooth groove (8042) is provided on the insert (8041); the gear (8043) is rotatably arranged in a circular shape at equal intervals on a position of the valve cover (6) close to the inner wall of the inner ring (8031) and the inner wall of the outer ring (8033); the gear (8043) is meshedly connected with the straight tooth groove (8042); The first grooved barrel (806) includes a plurality of first barrel blocks (8061), the inner wall of each first barrel block (8061) is provided with a first curved groove (8062), and four of the first curved grooves (8062) cooperate to form a first spiral slideway (8063). The first barrel block (8061) is connected to four of the inserts (8041), and the first curved grooves (8062) are adapted in size to the rotating sphere (8022); The second grooved barrel (807) includes a plurality of second barrel blocks (8071), the inner wall of each second barrel block (8071) is provided with a second curved groove (8072), and four of the second curved grooves (8072) cooperate to form a second spiral channel (8073). The second barrel block (8071) is connected to the other four inserts (8041), and the second curved grooves (8072) are adapted in size to the rotating sphere (8022); The first tube block (8061) and the second tube block (8071) are adjacently and cross-arranged on the insert (8041); The first spiral slideway (8063) is provided with two spiral turns, and the second spiral channel (8073) is provided with ten spiral turns.

2. A proportional valve and switch valve hybrid control hydraulic system according to claim 1, characterized in that: The driving unit (801) comprises a support frame (8011) and a brushed DC motor (8012), wherein the support frame (8011) is connected to the bearing unit (7), the brushed DC motor (8012) is arranged on the support frame (8011), and the output end of the brushed DC motor (8012) is connected to the precession unit (802).

3. A proportional valve and switch valve hybrid control hydraulic system according to claim 2, characterized in that: One end of the output shaft (8021) is connected to the output end of the brushed DC motor (8012), and the other end of the output shaft (8021) is connected to the valve core (9).

4. A proportional valve and switch valve hybrid control hydraulic system according to claim 3, characterized in that: The rotating unit (805) includes an inner rotating ring (8051), an outer rotating ring (8052), inner teeth (8053) and bottom teeth (8054); the inner rotating ring (8051) is rotatably connected to the bottom end of the inner ring (8031); the outer rotating ring (8052) is rotatably connected to the bottom end of the outer ring (8033); the inner teeth (8053) are arranged on the inner walls of the inner rotating ring (8051) and the outer rotating ring (8052); the bottom teeth (8054) are arranged on the bottom ends of the inner rotating ring (8051) and the outer rotating ring (8052); the inner teeth (8053) are meshedly connected to the gear (8043); and the bottom teeth (8054) are meshedly connected to the adjusting unit (808).

5. A proportional valve and switch valve hybrid control hydraulic system according to claim 4, characterized in that: A through hole (601) is provided on the valve cover (6), an adjustment groove (602) is provided on one side of the top end of the valve cover (6), a placement groove (603) is provided on the inner wall of the adjustment groove (602), a support plate (604) is provided at the bottom end of the through hole (601), and the adjustment unit (808) is provided on the adjustment groove (602), the placement groove (603) and the support plate (604).

6. A proportional valve and switch valve hybrid control hydraulic system according to claim 5, characterized in that: The adjustment unit (808) includes a motor (8081), a bevel gear A (8082), a bevel gear B (8083), a rotating rod (8084), a driving gear (8085), an electric push rod (8086) and a connecting rod (8087). The motor (8081) is arranged on the support plate (604). The bevel gear A (8082) is connected to the output end of the motor (8081). The rotating rod (8084) is rotatably arranged on the adjustment slot (602). The bevel gear B (8083) is sleeved on the rotating rod (8084). end, the bevel gear A (8082) is meshedly connected with the bevel gear B (8083), the driving gear (8085) is slidably sleeved on the end of the rotating rod (8084) away from the bevel gear B (8083), the electric push rod (8086) is arranged on the placement groove (603), one end of the connecting rod (8087) is connected to the output end of the electric push rod (8086), and the other end of the connecting rod (8087) is connected to the driving gear (8085), and the driving gear (8085) is adapted to the bottom gear (8054).

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