WO2023115747A1 - 阀盖组件、液压阀组、液压驱动系统和作业车辆 - Google Patents

阀盖组件、液压阀组、液压驱动系统和作业车辆 Download PDF

Info

Publication number
WO2023115747A1
WO2023115747A1 PCT/CN2022/085106 CN2022085106W WO2023115747A1 WO 2023115747 A1 WO2023115747 A1 WO 2023115747A1 CN 2022085106 W CN2022085106 W CN 2022085106W WO 2023115747 A1 WO2023115747 A1 WO 2023115747A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
oil
hydraulic
working
control
Prior art date
Application number
PCT/CN2022/085106
Other languages
English (en)
French (fr)
Inventor
刘远凯
李俊
杨敏
Original Assignee
三一汽车制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三一汽车制造有限公司 filed Critical 三一汽车制造有限公司
Publication of WO2023115747A1 publication Critical patent/WO2023115747A1/zh

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • F16K35/02—Means to prevent accidental or unauthorised actuation to be locked or disconnected by means of a pushing or pulling action

Definitions

  • the present application relates to the technical field of hydraulic engineering, in particular, to a valve cover assembly, a hydraulic valve group, a hydraulic drive system and a working vehicle.
  • the main way to solve the failure of the reversing control function of the reversing valve group in the prior art is to configure another set of electrical emergency operation box or replace the solenoid valve by the on-site service personnel to troubleshoot.
  • the electrical emergency operation box cannot solve the faults caused by power failure, power failure and solenoid valve coil damage.
  • using on-site troubleshooting to solve the fault not only requires professional after-sales service personnel, but also takes a long time to troubleshoot. If the reversing valve group cannot be restored to work within a short period of time, it will easily cause economic losses such as waste of materials and equipment damage.
  • This application aims to solve at least one of the technical problems existing in the prior art or related art.
  • an object of the present application is to provide a valve cover assembly.
  • Another object of the present application is to provide a hydraulic valve group.
  • the third object of the present application is to provide a hydraulic drive system comprising the above valve cover assembly or hydraulic valve group.
  • the fourth object of the present application is to provide a work vehicle including the above hydraulic drive system.
  • valve cover assembly which includes: Cavity, and sliding fit with the oil cavity.
  • the valve cover assembly provided by the present application can be used on a hydraulic valve group.
  • the hydraulic valve group includes working valves and control valve groups, etc., and the control valve group is used to control the normal operation of the working valves.
  • the bonnet assembly includes a bonnet and an isolating piston.
  • the isolating piston is set in the oil chamber and can slide and fit with the oil chamber in the oil chamber, so that after the emergency oil port is opened on the bonnet, the emergency oil port can be connected to the oil chamber Hydraulic oil drives the isolation piston to slide. Since the isolation piston is connected with the spool of the working valve, it can drive the spool of the working valve to move, so that the working state of the working valve can be controlled.
  • the bonnet assembly provided by this application can pass hydraulic oil into the oil chamber through the emergency oil port on the bonnet when the control valve group fails or is damaged, and drives the spool of the working valve, so that the working valve can be realized again. operation, thereby avoiding accidents or damage to the oil circuit.
  • valve cover assembly further includes: a sealing element arranged between the oil chamber and the isolation piston.
  • valve cover assembly further includes a seal, which is arranged between the isolation piston and the oil chamber, and can seal the gap between the oil chamber and the isolation piston when the isolation piston moves relative to the valve cover, Make the driving effect of the oil on the isolation piston to achieve the best.
  • valve cover assembly further includes: an elastic member, the first end of which is in contact with the isolation piston, and the other end of the elastic member is in contact with the spring seat.
  • the bonnet assembly further includes an elastic member, the first end of the elastic member abuts against the isolation piston, the other end of the elastic member abuts against the spring seat, and abuts against the spool of the working valve, so that When the isolation piston moves, it can drive the valve core to move, thereby controlling the working state of the working valve.
  • the sealing member includes a sealing ring, a sealing gasket and the like.
  • the elastic member includes spring or rubber.
  • the technical solution of the second aspect of the present application provides a hydraulic valve group, comprising: a valve body assembly and a valve cover assembly according to any one of the above technical solutions of the first aspect; the valve cover assembly is installed on the valve body assembly.
  • the hydraulic valve group provided by the present application includes a valve body assembly and a valve cover assembly according to any one of the technical solutions of the first aspect, and the valve cover assembly is installed on the valve body assembly. Since the hydraulic valve group provided by the technical solution of the second aspect of the application includes the bonnet assembly of the technical solution of the first aspect, the hydraulic valve group provided by the application has all the beneficial effects of the bonnet assembly provided by the technical solution of the first aspect. I won't go into details here.
  • the valve body assembly includes: a working valve; a control valve group connected to the working valve; an emergency oil circuit connected to the working valve and the bonnet assembly respectively.
  • the valve body assembly includes a working valve, a control valve group and an emergency oil circuit.
  • the control valve group is connected with the working valve and can control the working state of the working valve.
  • the working state here may refer to whether the working valve is working or not, or the connection of the working valve.
  • the emergency oil circuit is connected to the working valve, which can control the working valve when the control valve group fails, so as to ensure the operability of the load connected to the working valve and protect the equipment of the entire hydraulic system from damage, thereby avoiding economic damage. loss, especially when the control valve group in the hydraulic system is controlled by a solenoid valve group, the effect of the hydraulic valve group provided by the application is extremely obvious.
  • the hydraulic valve group of the present application has good versatility, high compatibility, strong reliability and wide applicability, and can be applied to various hydraulic systems and operating equipment.
  • the pumping hydraulic system realizes the switching of the two drive cylinders through the hydraulic reversing valve (ie, the working valve in the application) in the reversing valve group Alternate direction, so as to drive the two conveying cylinders to achieve continuous material delivery.
  • the reversing function of the hydraulic control directional valve of the reversing valve group is through the pilot electromagnetic reversing valve (that is, the control valve in this application) set in the main valve block.
  • the two channels of pilot working oil respectively act on both ends of the spool of the hydraulic control directional valve.
  • the pilot electromagnetic reversing valve changes the direction of liquid flow by energizing or de-energizing its electromagnet through electrical signals.
  • the failure rate of the reversing control function of the directional valve group is relatively high.
  • the failure of the reversing control function of the reversing valve group will affect the conveying of concrete materials, and when the function cannot be restored in a short time, it will cause the remaining concrete and the concrete staying in the pump truck conveying system to solidify, resulting in waste of concrete and equipment damage Therefore, the hydraulic valve group provided by this application can control the hydraulic directional valve to work when the pilot electromagnetic directional valve is damaged by adding an additional emergency oil circuit, so as to ensure the immediate delivery of concrete materials.
  • control valve group includes two control oil circuits, each control oil circuit includes a control valve and a first oil circuit, and the control valve communicates with the hydraulic control port of the working valve through the first oil circuit.
  • control valve group includes two control oil circuits, each control oil circuit includes a control valve and a first oil circuit, and each control valve communicates with the hydraulic control port of the working valve through the first oil circuit, Therefore, the oil output direction of the working valve can be changed by controlling the state of the oil circuit between the control valve and the hydraulic control port of the working valve, and then controlling the working state of the working valve.
  • control valve may be a solenoid valve, so that the first control valve can be controlled more conveniently, and the working valve may be a hydraulic reversing valve or the like.
  • control valve is a two-position four-way electromagnetic reversing valve.
  • a cut-off device is provided on the first oil passage, and the cut-off device is used for connecting or disconnecting the first oil passage.
  • a cut-off device is provided on the first oil passage, and the cut-off device can connect or disconnect the first oil passage.
  • the control valve fails, the power is cut off or the coil is damaged, etc., making the control valve inoperable. Therefore, if the first oil circuit is connected to the working valve before the control valve is damaged, then after the control valve is damaged, The first oil circuit will still maintain the state of oil connection with the working valve, which will cause the load to be in the same working state all the time, and accidents may occur. Therefore, by setting a cut-off device on the first oil circuit, it can be used in emergency situations , cut off the first oil circuit to stop the load, which further provides a guarantee for the stability of the hydraulic valve group. Certainly, in a normal function state, the cut-off device communicates with the first oil passage.
  • the two control oil circuits also include a second oil circuit corresponding to the control valve; one of the two second oil circuits is used for oil supply, and the other of the two second oil circuits is used for for oil return.
  • the two control oil passages also include a second oil passage corresponding to the control valve, one of the two second oil passages is used for oil supply, and the other of the two second oil passages is used for oil return.
  • the second oil passage is a pipeline communicated with the control valve, which can deliver oil to the control valve, or the oil returned by the control valve returns to the oil tank through the second oil passage.
  • the valve body assembly is also provided with an oil inlet, an oil return port, an oil drain port, an external oil port and a working oil port, the oil inlet and the oil return port are connected with the working valve, and the oil drain port is connected with the control valve.
  • the valve group is connected through the second oil passage, the external oil port is connected with the control valve through the second oil passage, the oil inlet is connected with the control valve through the second oil passage, and the working oil port is connected with the working valve.
  • a shuttle valve is arranged on the second oil passage where the oil inlet and the external oil port communicate with the control valve.
  • the oil inlet and the external oil port selectively supply oil to the control valve through the shuttle valve.
  • the external oil port and the like can be set as a quick-plug oil port structure.
  • the technical solution of the third aspect of the present application provides a hydraulic drive system, including the valve cover assembly of the technical solution of the first aspect above, or the hydraulic valve group provided by the technical solution of the second aspect above.
  • the hydraulic drive system provided by the present application includes the valve cover assembly provided by the technical solution of the first aspect, or the hydraulic valve group provided by the technical solution of the second aspect. Therefore, the hydraulic drive system provided by the present application has all the beneficial effects of the valve cover assembly provided by the technical solution of the first aspect or the hydraulic valve group provided by the technical solution of the second aspect, and will not be repeated here.
  • the technical solution of the fourth aspect of the present application provides a work vehicle, including the hydraulic drive system of the technical solution of the third aspect above.
  • the working vehicle provided by the present application includes the hydraulic drive system provided by the technical solution of the third aspect. Therefore, the working vehicle provided by the present application has all the beneficial effects of the hydraulic drive system provided by the technical solution of the third aspect, which will not be repeated here.
  • the working vehicle may be a concrete pump truck, a boring machine, a road roller, and the like.
  • the external oil port of the hydraulic valve group of the present application can be connected with the accumulator provided in the hydraulic system of the pump truck through a pipeline, and the oil inlet can be connected with the hydraulic pump in the hydraulic system of the pump truck.
  • the pressure oil of the accumulator and the hydraulic pump can provide stable control oil for the control valve group after the selection of the shuttle valve;
  • the two working oil ports can be respectively connected with the two driving cylinders set in the hydraulic system of the pump truck through pipelines.
  • Fig. 1 is a schematic structural view of a hydraulic valve group provided by an embodiment of the present application
  • Fig. 2 is another structural schematic diagram of the hydraulic valve group provided by the embodiment of the present application.
  • Fig. 3 is another structural schematic diagram of the hydraulic valve group provided by the embodiment of the present application.
  • Fig. 4 is another structural schematic diagram of the hydraulic valve group provided by the embodiment of the present application.
  • Fig. 5 is another structural schematic diagram of the hydraulic valve group provided by the embodiment of the present application.
  • Fig. 6 is another schematic structural view of the hydraulic valve group provided by the embodiment of the present application.
  • Fig. 7 is another schematic structural view of the hydraulic valve group provided by the embodiment of the present application.
  • Fig. 8 is another structural schematic diagram of the hydraulic valve group provided by the embodiment of the present application.
  • valve body assembly 11 working valve, 112 hydraulic control port, 12 emergency oil circuit, 13 valve cover, 132 emergency oil port, 14 oil inlet, 15 oil return port, 16 oil drain port, 17 working oil port, 18 external connection Oil port, 2 control valve group, 22 control valve, 24 first oil circuit, 26 second oil circuit, 28 shuttle valve, 3 relief valve, 4 spool, 5 isolation piston, 6 sealing ring, 7 spring, 8 spring seat.
  • the first embodiment of the present application provides a valve cover 13 assembly
  • the valve cover 13 assembly includes: a valve cover 13, an emergency oil port 132 and an emergency oil port 132 communicated oil chamber; the isolation piston 5 is arranged in the oil chamber and is slidably matched with the oil chamber. Wherein, when the control valve group fails, the oil can enter the oil chamber through the emergency oil port 132 to drive the isolation piston 5 to drive the spool 4 of the working valve 11 to move.
  • the valve cover 13 assembly provided according to the present application can be used on a hydraulic valve group.
  • the hydraulic valve group includes a working valve 11 and a control valve group, etc., and the control valve group is used to control the working valve 11 to work normally.
  • the bonnet 13 assembly includes the bonnet 13 and the isolating piston 5.
  • the isolating piston 5 is arranged in the oil chamber and can slide and fit with the oil chamber in the oil chamber, so that after the emergency oil port 132 is opened on the bonnet 13, the emergency oil port 132 feeds hydraulic oil into the oil chamber to drive the isolation piston 5 to slide. Because the isolation piston 5 is connected with the spool 4 of the working valve 11, it can drive the spool 4 of the working valve 11 to move, so that the working state of the working valve 11 can be controlled.
  • the bonnet 13 assembly provided by this application can pass hydraulic oil into the oil chamber through the emergency oil port 132 on the bonnet 13 to drive the spool 4 of the working valve 11 when the control valve group fails or is damaged. , so that the working valve 11 can be operated again, thereby avoiding accidents or damage to the oil circuit.
  • the bonnet 13 assembly also includes: a sealing member, arranged between the bonnet 13 and the isolation piston 5; an elastic member, the first end of the elastic member is in contact with the isolation piston 5, and the other end of the elastic member is in contact with the isolation piston 5.
  • the spring seat 8 abuts against each other.
  • the bonnet 13 assembly also includes a sealing member and an elastic member, the sealing member is arranged between the isolation piston 5 and the bonnet 13, and when the isolation piston 5 moves relative to the bonnet 13, the bonnet 13 and the The gaps between the isolation pistons 5 are sealed, so that the driving effect of the oil on the isolation pistons 5 can be optimized.
  • the first end of the elastic member abuts against the isolation piston 5, and the second end abuts against the spool 4 of the working valve 11 through the spring seat 8, so that when the isolation piston 5 moves, it can drive the spool 4 to move, thereby controlling The working state of the working valve 11.
  • the sealing member includes a sealing ring 6, a sealing gasket and the like.
  • the elastic member includes a spring 7 or rubber or the like.
  • the embodiment of the second aspect of the present application provides a hydraulic valve group, including: a valve body assembly 1 and the valve cover assembly of any one of the embodiments of the first aspect above; the valve cover assembly is installed on the valve body assembly 1 .
  • the hydraulic valve group provided according to the present application includes a valve body assembly 1 and the valve cover assembly according to any one of the embodiments of the first aspect, and the valve cover assembly is installed on the valve body assembly 1 . Since the hydraulic valve group provided in the embodiment of the second aspect of the application includes the bonnet assembly of the embodiment of the first aspect, the hydraulic valve group provided in the application has all the beneficial effects of the bonnet assembly provided in the embodiment of the first aspect. I won't go into details here.
  • the valve body assembly 1 includes: a working valve 11; a control valve group 2 connected to the working valve 11; an emergency oil circuit 12 communicating with the working valve 11 and the valve cover assembly respectively.
  • the valve body assembly 1 includes a working valve 11; the control valve group is connected with the working valve 11 to control the working state of the working valve 11; the emergency oil circuit 12 is connected with the working valve 11 for controlling When the valve group fails, the working state of the working valve 11 is controlled.
  • the hydraulic valve group provided according to the present application includes a working valve 11 , a control valve group 2 and an emergency oil circuit 12 .
  • the control valve group 2 is connected with the working valve 11, and can control the working state of the working valve 11.
  • the working state here may refer to whether the working valve 11 is working, or the communication status of the working valve 11, etc.
  • the emergency oil circuit 12 communicates with the working valve 11, and can control the working valve 11 when the control valve group 2 fails, so as to ensure the operability of the load connected to the working valve 11 and protect the equipment of the entire hydraulic system from damage , so as to avoid economic loss, especially when the control valve group 2 in the hydraulic system is controlled by a solenoid valve group, the effect of the hydraulic valve group provided by the application is very obvious.
  • the hydraulic valve group of the present application has good versatility, high compatibility, strong reliability and wide applicability, and can be applied to various hydraulic systems and operating equipment.
  • the reversing function of the hydraulic control directional valve of the reversing valve group is to guide the electromagnetic reversing valve (that is, the control valve in this application) by setting it in the main valve block. 22)
  • the two paths of pilot working oil respectively act on the two ends of the spool 4 of the hydraulic control directional valve.
  • the pilot electromagnetic reversing valve changes the direction of liquid flow by energizing or de-energizing its electromagnet through electrical signals.
  • the failure rate of the reversing control function of the directional valve group is relatively high.
  • the hydraulic valve group provided by this application, by adding an additional emergency oil circuit 12, can also control its hydraulic reversing valve to work when the pilot electromagnetic reversing valve is damaged, ensuring the immediate delivery of concrete materials .
  • control valve group 2 includes two control oil circuits, each control oil circuit includes a control valve 22 and a first oil circuit 24, and the control valve 22 is hydraulically controlled by the first oil circuit 24 and the working valve 11. Port 112 communicates.
  • control valve group 2 includes two control oil circuits, each control oil circuit includes a control valve 22 and a first oil circuit 24, and each control valve 22 communicates with the working valve 11 through the first oil circuit 24
  • the oil control port 112 of the control valve 11 is connected, so that the oil output direction of the work valve 11 can be changed by controlling the state of the oil circuit between the control valve 22 and the liquid control port 112 of the work valve 11, and then controlling the working state of the work valve 11.
  • control valve 22 can be a solenoid valve, so that the first control valve 22 can be controlled more conveniently, and the working valve 11 can be a hydraulic reversing valve or the like.
  • control valve 22 is a two-position four-way electromagnetic reversing valve.
  • the first oil passage 24 is provided with a cut-off device for connecting or disconnecting the first oil passage 24 .
  • a cut-off device is provided on the first oil passage 24 , and the cut-off device can connect or disconnect the first oil passage 24 .
  • the control valve 22 breaks down, the power is cut off or the coil is damaged, etc., so that the control valve 22 becomes inoperable. Therefore, if the first oil passage 24 is in the state of communicating with the working valve 11 before the control valve 22 is damaged, then After the control valve 22 is damaged, the first oil circuit 24 will still maintain the state of oil connection with the working valve 11, which will cause the load to always be in the same working state, and accidents are likely to occur.
  • a cut-off device is arranged on the top, which can cut off the first oil circuit 24 in case of emergency, so that the load stops working, which further provides a guarantee for the stability of the hydraulic valve group.
  • the cut-off device communicates with the first oil passage 24 .
  • both control oil circuits also include a second oil circuit 26 correspondingly communicated with the control valve 22; one of the two second oil circuits 26 is used for oil supply, and one of the two second oil circuits 26 The other one is for oil return.
  • the two control oil passages also include a second oil passage 26 correspondingly communicated with the control valve 22, one of the two second oil passages 26 is used for oil supply, and one of the two second oil passages 26 The other one is for oil return.
  • the second oil passage 26 is a pipeline communicating with the control valve 22 , which can deliver oil to the control valve 22 , or the oil flowing back through the control valve 22 returns to the oil tank through the second oil passage 26 .
  • the valve body assembly 1 is also provided with an oil inlet 14, an oil return port 15, an oil discharge port 16, an external oil port 18 and a working oil port 17, and the oil inlet 14 and the oil return port 15 are connected to the working port.
  • the valve 11 communicates, the oil drain port 16 communicates with the control valve 22 through the second oil passage 26, the external oil port 18 communicates with the control valve 22 through the second oil passage 26, and the oil inlet 14 communicates with the control valve 22 through the second oil passage 26
  • the working oil port 17 communicates with the working valve 11.
  • a shuttle valve 28 is provided on the second oil passage 26 where the oil inlet 14 and the external oil port 18 communicate with the control valve 22 .
  • the oil inlet 14 and the external oil port 18 selectively supply oil to the control valve 22 through the shuttle valve 28 .
  • external oil port 18 and the like may be configured as a quick-plug oil port structure.
  • the hydraulic valve group further includes a relief valve 3 .
  • the embodiment of the third aspect of the present application provides a hydraulic drive system, including the valve cover assembly of the embodiment of the first aspect above, or the hydraulic valve group provided by the embodiment of the second aspect above.
  • the hydraulic drive system provided by the present application includes the valve cover assembly provided by the embodiment of the first aspect, or the hydraulic valve group provided by the embodiment of the second aspect. Therefore, the hydraulic drive system provided by the present application has all the beneficial effects of the valve cover assembly provided by the embodiment of the first aspect or the hydraulic valve group provided by the embodiment of the second aspect, and will not be repeated here.
  • the embodiment of the fourth aspect of the present application provides a work vehicle, including the hydraulic drive system of the embodiment of the third aspect above.
  • the work vehicle provided by the present application includes the hydraulic drive system provided by the embodiment of the third aspect. Therefore, the work vehicle provided by the present application has all the beneficial effects of the hydraulic drive system provided by the embodiment of the third aspect, which will not be repeated here.
  • the working vehicle may be a concrete pump truck, a roadheader, a road roller, and the like.
  • the external oil port 18 of the hydraulic valve group of the present application can be connected with the accumulator provided in the hydraulic system of the pump truck through a pipeline, and the oil inlet 14 can be connected with the hydraulic system of the pump truck.
  • the hydraulic pump is connected through a pipeline, and the pressure oil of the accumulator and the hydraulic pump provides stable control oil for the control valve 22 after the selection of the shuttle valve 28; the oil return port 15 and the oil drain port 16 can be set with the pump truck hydraulic system
  • the hydraulic oil tank is connected through pipelines; the two working oil ports 17 can be respectively connected with the two drive cylinders set in the hydraulic system of the pump truck through pipelines.
  • the P3 port of the working valve 11 is connected to the B3 port, and the T3 port is connected to the A3 port;
  • the coil on the right side of the working valve is not energized, the working valve on the left side is in the left position as shown in Fig.
  • the spool 4 of the valve 11 is in the right position.
  • the P3 port of the working valve 11 is connected to the A3 port, and the T3 port is connected to the B3 port.
  • the reversing function of the working valve 11 of the hydraulic valve group is realized by energizing or de-energizing the electromagnets of the two control valves 22 through electrical signals to change the direction of the liquid flow.
  • control valve 22 when the control valve 22 fails due to electrical control system failure, power failure, power failure or coil failure of the control valve 22, it can be connected through the emergency oil port 132 on the valve cover assembly on the left and right sides of the hydraulic valve group.
  • the external emergency control oil can be exchanged, so that the hydraulic valve group can realize the emergency working function.
  • the isolation piston 5 in the right bonnet 13 acts on the pressure oil.
  • the P3 port of the working valve 11 is connected to the A3 port, and T3 The port is connected to the B3 port.
  • the reversing function of the working valve 11 of the hydraulic valve group can be connected to the emergency oil port 132 on the valve cover 13 on the left and right sides of the hydraulic valve group alternately, and the emergency pressure oil can be connected externally.
  • Push the isolating piston 5 on the bonnet 13 on the left and right sides under the action of the force so that the force of the isolating piston 5 is transmitted through the spring 7, so as to realize the left and right movement of the spool 4 of the working valve 11, and restore the emergency reversing function of the hydraulic valve group.
  • a sealing groove is also arranged on the isolation piston 5, and a sealing ring 6 is arranged in the sealing groove, and the inner hole of the isolation piston 5 and the valve cover 13 is in a dynamic sealing fit.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be directly or indirectly through an intermediary.
  • connection can be a fixed connection, a detachable connection, or an integral connection; it can be directly or indirectly through an intermediary.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

一种阀盖组件、液压阀组、液压驱动系统和作业车辆。其中，阀盖组件包括：阀盖（13），阀盖（13）上设置有应急油口（132）和与应急油口（132）连通的油腔；隔离活塞（5），设置在油腔内，并与油腔滑动配合。

Description

阀盖组件、液压阀组、液压驱动系统和作业车辆
本申请要求于2021年12月21日提交到中国国家知识产权局的申请号为202123235592.X、发明名称为“阀盖组件、液压阀组、液压驱动系统和作业车辆”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及液压工程技术领域，具体而言，涉及一种阀盖组件、液压阀组、液压驱动系统和作业车辆。
背景技术
目前，现有技术解决换向阀组换向控制功能失效的主要途径是另外配置一套电气应急操作盒或由现场的服务人员现场进行更换电磁阀来排故。但是电气应急操作盒无法解决由于断电、停电以及电磁阀线圈损坏而引起的故障。而且采用现场排故解决故障，不仅需要专业的售后服务人员进行，而且排故工作比较耗时，如果短时内无法使换向阀组恢复工作，容易造成物料浪费和设备损坏等经济损失。
因此，如何设计出一种结构简单，工作可靠，操作方便且具有应急工作功能的阀盖组件、液压阀组为目前亟待解决的问题。
申请内容
本申请旨在至少解决现有技术或相关技术中存在的技术问题之一。
因此，本申请的一个目的在于提供了一种阀盖组件。
本申请的另一个目的在于提供了一种液压阀组。
本申请的第三个目的在于提供了包括上述阀盖组件或液压阀组的液压驱动系统。
本申请的第四个目的在于提供了包括上述液压驱动系统的作业车辆。
为实现上述目的，本申请的技术方案提供了一种阀盖组件，阀盖组件包括：阀盖，阀盖上设置有应急油口和与应急油口连通的油腔；隔离活塞，设 置在油腔内，并与油腔滑动配合。
根据本申请提供的阀盖组件，能够用在液压阀组上。液压阀组包括工作阀和控制阀组等，控制阀组是用来控制工作阀正常工作的。阀盖组件包括阀盖和隔离活塞，隔离活塞设置在油腔内，能够在油腔内与油腔滑动配合，从而在阀盖上开设应急油口后，通过应急油口向油腔内通入液压油能够驱动隔离活塞进行滑动。由于隔离活塞是与工作阀的阀芯相连接的，因此，能够带动工作阀的阀芯进行移动，这样就能够控制工作阀的工作状态了。具体在实际应用过程中，当控制阀损坏或出现故障时，由于其不能够对工作阀进行控制，会导致与工作阀连接的负载变得不可操作，很容易出现事故，或者损坏油路，因此，本申请提供的阀盖组件能够在控制阀组出现故障或损坏时，通过阀盖上的应急油口向油腔内通入液压油，驱动工作阀的阀芯，使工作阀又能够实现可操作，进而能够避免事故的发生或者油路的损坏。
另外，本申请提供的技术方案还可以具有如下附加技术特征：
在上述技术方案中，阀盖组件还包括：密封件，设置在油腔和隔离活塞之间。
在该技术方案中，阀盖组件还包括密封件，密封件设置在隔离活塞和油腔之间，能够在隔离活塞相对于阀盖运动时，对油腔和隔离活塞之间的间隙进行密封，使油液对隔离活塞的驱动效果达到最佳。
在上述技术方案中，阀盖组件还包括：弹性件，弹性件的第一端与隔离活塞相抵接，弹性件的另一端与弹簧座相抵接。
在该技术方案中，阀盖组件还包括弹性件，弹性件的第一端与隔离活塞相抵接，弹性件的另一端与弹簧座抵接，并抵靠在工作阀的阀芯上，这样使得隔离活塞运动时，能够带动阀芯进行移动，从而控制工作阀的工作状态。
进一步地，密封件包括密封圈和密封垫等。
进一步地，弹性件包括弹簧或橡胶等。
本申请第二方面的技术方案提供了一种液压阀组，包括：阀体组件和上述第一方面技术方案中任一项的阀盖组件；阀盖组件安装在阀体组件上。
根据本申请提供的液压阀组，包括阀体组件和第一方面技术方案中任一 项的阀盖组件，阀盖组件安装在阀体组件上。由于本申请第二方面技术方案提供的液压阀组包括第一方面技术方案的阀盖组件，因此，本申请提供的液压阀组具有第一方面技术方案提供的阀盖组件的全部有益效果，在此不在赘述。
在上述技术方案中，阀体组件包括：工作阀；控制阀组，与工作阀连接；应急油路，分别与工作阀和阀盖组件连通。
在该技术方案中，阀体组件包括工作阀、控制阀组和应急油路。控制阀组与工作阀连接，能够控制工作阀的工作状态，这里的工作状态可以指的是工作阀是否工作，或者工作阀的连通情况等。应急油路与工作阀连通，能够在控制阀组出现故障时，对工作阀进行控制，从而保证与工作阀连接的负载的可操作性，和保护整个液压系统的设备不损坏，从而避免造成经济损失，尤其是在液压系统中控制阀组为电磁阀组控制时，本申请提供的液压阀组的作用极为明显。并且本申请的液压阀组的通用性好、兼容性高、可靠性强和适用性广，能够应用到多种液压系统和作业设备中。
具体地，如果将本申请的液压阀组应用在混凝土泵车上时，由于泵送液压系统通过换向阀组中的液动换向阀(即本申请中的工作阀)实现两个驱动油缸的交替换向，从而带动两个输送缸实现连续的输料，换向阀组液控方向阀的换向功能是通过设置在主阀块中先导电磁换向阀(即本申请中的控制阀)的两路先导工作油分别作用在液控方向阀阀芯两端而实现的。先导电磁换向阀是通过电气信号给其电磁铁通电或断电来实现改变液流方向的，但在实际工作中，由于电气控制系统故障和断电、停电以及电磁阀线圈损坏引起导致的换向阀组换向控制功能失效故障率相对较高。换向阀组换向控制功能失效会影响混凝土物料的输送，而且当该功能在短时间无法恢复时，会导致剩余的混凝土和停留在泵车输送系统中的混凝土凝固，造成混凝土浪费和设备损坏等经济损失，从而本申请提供的液压阀组，通过又额外的增加了应急油路，在先导电磁换向阀损坏时也能够控制其液动换向阀进行工作，保证了混凝土物料的即时输送。
在上述技术方案中，控制阀组包括两个控制油路，每个控制油路均包括控制阀和第一油路，控制阀通过第一油路与工作阀的液控口连通。
在该技术方案中，控制阀组包括两个控制油路，每个控制油路均包括控制阀和第一油路，每个控制阀都通过第一油路与工作阀的液控口连通，从而可以通过控制控制阀与工作阀液控口之间的油路状态，进而控制工作阀的工作状态，来改变工作阀的输出油的方向。
其中，控制阀可以是电磁阀，从而能够更加方便的对第一控制阀作出控制，工作阀可以是液动换向阀等。
进一步地，控制阀为两位四通电磁换向阀。
在上述技术方案中，第一油路上设置有切断装置，切断装置用于连通或断开第一油路。
在该技术方案中，第一油路上设置有切断装置，切断装置能够连通或断开第一油路。在控制阀出现故障时，断电或者线圈损坏等，使控制阀变的不可操作，因此，如果在控制阀损坏前，第一油路是与工作阀通油的状态，那么控制阀损坏后，第一油路还是会保持与工作阀通油的状态，这样会导致负载一直处于一个相同的工作状态，很可能会发生事故，因此，通过在第一油路上设置切断装置，能够在紧急情况下，将第一油路进行切断，使负载停止工作，进一步为液压阀组的稳定提供了保证。当然，在正常功能状态下，切断装置是将第一油路连通的。
在上述技术方案中，两个控制油路均还包括与控制阀对应连通的第二油路；两个第二油路中的一个用于供油，两个第二油路中的另一个用于回油。
在该技术方案中，两个控制油路均还包括与控制阀对应连通的第二油路，两个第二油路中的一个用于供油，两个第二油路中的另一个用于回油。可以理解的是，第二油路是与控制阀连通的管路，能够为控制阀输送油液，或者通过控制阀回流的油液经过第二油路回到油箱。
在上述技术方案中，阀体组件上还开设有进油口、回油口、泄油口、外接油口和工作油口，进油口和回油口与工作阀连通，泄油口与控制阀组通过第二油路连通，外接油口通过第二油路与控制阀连通，进油口与控制阀通过第二油路连通，工作油口与工作阀连通。
进一步地，在进油口和外接油口与控制阀连通的第二油路上设置有梭阀。进油口和外接油口通过梭阀选择性为控制阀供油。
进一步地，外接油口等可以设置为快插油口结构。
本申请第三方面的技术方案提供了一种液压驱动系统，包括上述第一方面技术方案的阀盖组件，或上述第二方面技术方案提供的液压阀组。
根据本申请提供的液压驱动系统，由于其包括第一方面技术方案提供的阀盖组件，或第二方面技术方案提供的液压阀组。因此，本申请提供的液压驱动系统具有第一方面技术方案提供的阀盖组件或第二方面技术方案提供的液压阀组的全部有益效果，在此不在赘述。
本申请第四方面的技术方案提供了一种作业车辆，包括上述第三方面技术方案的液压驱动系统。
根据本申请提供的作业车辆，由于其包括第三方面技术方案提供的液压驱动系统。因此，本申请提供的作业车辆具有第三方面技术方案提供的液压驱动系统的全部有益效果，在此不在赘述。
在上述技术方案中，作业车辆可以是混凝土泵车、掘进机、压路机等。
其中，当作业车辆为混凝土泵车时，本申请液压阀组的外接油口可通过管路与泵车液压系统中设置的蓄能器连接，进油口可与泵车液压系统中的液压泵通过管路连接，蓄能器和液压泵的压力油通过梭阀的选择后为控制阀组提供稳定的控制油；回油口和泄油口可与泵车液压系统中设置的液压油箱通过管路连接；两个工作油口可分别与泵车液压系统中设置的两个驱动油缸通过管路连接。
本申请的附加方面和优点将在下面的描述部分中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是本申请的实施例提供的液压阀组的一个结构示意图；
图2是本申请的实施例提供的液压阀组的另一结构示意图；
图3是本申请的实施例提供的液压阀组的又一结构示意图；
图4是本申请的实施例提供的液压阀组的又一结构示意图；
图5是本申请的实施例提供的液压阀组的又一结构示意图；
图6是本申请的实施例提供的液压阀组的又一结构示意图；
图7是本申请的实施例提供的液压阀组的又一结构示意图；
图8是本申请的实施例提供的液压阀组又一结构示意图。
其中，图1至图8中的附图标记与部件名称之间的对应关系为：
1阀体组件，11工作阀，112液控口，12应急油路，13阀盖，132应急油口，14进油口，15回油口，16泄油口，17工作油口，18外接油口，2控制阀组，22控制阀，24第一油路，26第二油路，28梭阀，3溢流阀，4阀芯，5隔离活塞，6密封圈，7弹簧，8弹簧座。
具体实施方式
为了能够更清楚地理解本申请的上述目的、特征和优点，下面结合附图和具体实施例方式对本申请进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本申请，但是，本申请还可以采用其他不同于在此描述的其他方式来实施，因此，本申请的保护范围并不受下面公开的具体实施例的限制。
实施例一
如图1至图8所示，本申请第一个实施例提供了一种阀盖13组件，阀盖13组件包括：阀盖13，阀盖13上设置有应急油口132和与应急油口132连通的油腔；隔离活塞5，设置在油腔内，并与油腔滑动配合。其中，在控制阀组出现故障时，油液能够通过应急油口132进入油腔内驱动隔离活塞5，以带动工作阀11的阀芯4进行移动。
根据本申请提供的阀盖13组件，能够用在液压阀组上。液压阀组包括工作阀11和控制阀组等，控制阀组是用来控制工作阀11正常工作的。阀盖13组件包括阀盖13和隔离活塞5，隔离活塞5设置在油腔内，能够在油腔内与油腔滑动配合，从而在阀盖13上开设应急油口132后，通过应急油口132向油腔内通入液压油能够驱动隔离活塞5进行滑动。由于隔离活塞5是 与工作阀11的阀芯4相连接的，因此，能够带动工作阀11的阀芯4进行移动，这样就能够控制工作阀11的工作状态了。具体在实际应用过程中，当控制阀22损坏或出现故障时，由于其不能够对工作阀11进行控制，会导致与工作阀11连接的负载变得不可操作，很容易出现事故，或者损坏油路，因此，本申请提供的阀盖13组件能够在控制阀组出现故障或损坏时，通过阀盖13上的应急油口132向油腔内通入液压油，驱动工作阀11的阀芯4，使工作阀11又能够实现可操作，进而能够避免事故的发生或者油路的损坏。
另外，本申请提供的实施例还可以具有如下附加技术特征：
在上述实施例中，阀盖13组件还包括：密封件，设置在阀盖13和隔离活塞5之间；弹性件，弹性件的第一端与隔离活塞5相抵接，弹性件的另一端与弹簧座8相抵接。
在该实施例中，阀盖13组件还包括密封件和弹性件，密封件设置在隔离活塞5和阀盖13之间，能够在隔离活塞5相对于阀盖13运动时，对阀盖13和隔离活塞5之间的间隙进行密封，使油液对隔离活塞5的驱动效果达到最佳。弹性件的第一端与隔离活塞5相抵接，第二端通过弹簧座8抵接在工作阀11的阀芯4上，这样使得隔离活塞5运动时，能够带动阀芯4进行移动，从而控制工作阀11的工作状态。
进一步地，密封件包括密封圈6和密封垫等。
进一步地，弹性件包括弹簧7或橡胶等。
本申请第二方面的实施例提供了一种液压阀组，包括：阀体组件1和上述第一方面实施例中任一项的阀盖组件；阀盖组件安装在阀体组件1上。
根据本申请提供的液压阀组，包括阀体组件1和第一方面实施例中任一项的阀盖组件，阀盖组件安装在阀体组件1上。由于本申请第二方面实施例提供的液压阀组包括第一方面实施例的阀盖组件，因此，本申请提供的液压阀组具有第一方面实施例提供的阀盖组件的全部有益效果，在此不在赘述。
在上述实施例中，阀体组件1包括：工作阀11；控制阀组2，与工作阀 11连接；应急油路12，分别与工作阀11和阀盖组件连通。
在该实施例中，阀体组件1包括工作阀11；控制阀组，与工作阀11连接，用以控制工作阀11的工作状态；应急油路12，与工作阀11连接，用于在控制阀组出现故障时，控制工作阀11的工作状态。
根据本申请提供的液压阀组，包括工作阀11、控制阀组2和应急油路12。控制阀组2与工作阀11连接，能够控制工作阀11的工作状态，这里的工作状态可以指的是工作阀11是否工作，或者工作阀11的连通情况等。应急油路12与工作阀11连通，能够在控制阀组2出现故障时，对工作阀11进行控制，从而保证与工作阀11连接的负载的可操作性，和保护整个液压系统的设备不损坏，从而避免造成经济损失，尤其是在液压系统中控制阀组2为电磁阀组控制时，本申请提供的液压阀组的作用极为明显。并且本申请的液压阀组的通用性好、兼容性高、可靠性强和适用性广，能够应用到多种液压系统和作业设备中。
具体地，如果将本申请的液压阀组应用在混凝土泵车上时，由于泵送液压系统通过换向阀组中的液动换向阀(即本申请中的工作阀11)实现两个驱动油缸的交替换向，从而带动两个输送缸实现连续的输料，换向阀组液控方向阀的换向功能是通过设置在主阀块中先导电磁换向阀(即本申请中的控制阀22)的两路先导工作油分别作用在液控方向阀阀芯4两端而实现的。先导电磁换向阀是通过电气信号给其电磁铁通电或断电来实现改变液流方向的，但在实际工作中，由于电气控制系统故障和断电、停电以及电磁阀线圈损坏引起导致的换向阀组换向控制功能失效故障率相对较高。换向阀组换向控制功能失效会影响混凝土物料的输送，而且当该功能在短时间无法恢复时，会导致剩余的混凝土和停留在泵车输送系统中的混凝土凝固，造成混凝土浪费和设备损坏等经济损失，从而本申请提供的液压阀组，通过又额外的增加了应急油路12，在先导电磁换向阀损坏时也能够控制其液动换向阀进行工作，保证了混凝土物料的即时输送。
在上述实施例中，控制阀组2包括两个控制油路，每个控制油路均包括控制阀22和第一油路24，控制阀22通过第一油路24与工作阀11的液控口112连通。
在该实施例中，控制阀组2包括两个控制油路，每个控制油路均包括控制阀22和第一油路24，每个控制阀22都通过第一油路24与工作阀11的液控口112连通，从而可以通过控制控制阀22与工作阀11液控口112之间的油路状态，进而控制工作阀11的工作状态，来改变工作阀11的输出油的方向。
其中，控制阀22可以是电磁阀，从而能够更加方便的对第一控制阀22作出控制，工作阀11可以是液动换向阀等。
进一步地，控制阀22为两位四通电磁换向阀。
在上述实施例中，第一油路24上设置有切断装置，切断装置用于连通或断开第一油路24。
在该实施例中，第一油路24上设置有切断装置，切断装置能够连通或断开第一油路24。在控制阀22出现故障时，断电或者线圈损坏等，使控制阀22变的不可操作，因此，如果在控制阀22损坏前，第一油路24是与工作阀11通油的状态，那么控制阀22损坏后，第一油路24还是会保持与工作阀11通油的状态，这样会导致负载一直处于一个相同的工作状态，很可能会发生事故，因此，通过在第一油路24上设置切断装置，能够在紧急情况下，将第一油路24进行切断，使负载停止工作，进一步为液压阀组的稳定提供了保证。当然，在正常功能状态下，切断装置是将第一油路24连通的。
在上述实施例中，两个控制油路均还包括与控制阀22对应连通的第二油路26；两个第二油路26中的一个用于供油，两个第二油路26中的另一个用于回油。
在该实施例中，两个控制油路均还包括与控制阀22对应连通的第二油路26，两个第二油路26中的一个用于供油，两个第二油路26中的另一个用于回油。可以理解的是，第二油路26是与控制阀22连通的管路，能够为控制阀22输送油液，或者通过控制阀22回流的油液经过第二油路26回到油箱。
在上述实施例中，阀体组件1上还开设有进油口14、回油口15、泄油口16、外接油口18和工作油口17，进油口14和回油口15与工作阀11连 通，泄油口16与控制阀22通过第二油路26连通，外接油口18通过第二油路26与控制阀22连通，进油口14与控制阀22通过第二油路26连通，工作油口17与工作阀11连通。
进一步地，在进油口14和外接油口18与控制阀22连通的第二油路26上设置有梭阀28。进油口14和外接油口18通过梭阀28选择性为控制阀22供油。
进一步地，外接油口18等可以设置为快插油口结构。
在上述实施例中，液压阀组还包括溢流阀3。
本申请第三方面的实施例提供了一种液压驱动系统，包括上述第一方面实施例的阀盖组件，或上述第二方面实施例提供的液压阀组。
根据本申请提供的液压驱动系统，由于其包括第一方面实施例提供的阀盖组件，或第二方面实施例提供的液压阀组。因此，本申请提供的液压驱动系统具有第一方面实施例提供的阀盖组件或第二方面实施例提供的液压阀组的全部有益效果，在此不在赘述。
本申请第四方面的实施例提供了一种作业车辆，包括上述第三方面实施例的液压驱动系统。
根据本申请提供的作业车辆，由于其包括第三方面实施例提供的液压驱动系统。因此，本申请提供的作业车辆具有第三方面实施例提供的液压驱动系统的全部有益效果，在此不在赘述。
在上述实施例中，作业车辆可以是混凝土泵车、掘进机、压路机等。
其中，当作业车辆为混凝土泵车时，本申请液压阀组的外接油口18可通过管路与泵车液压系统中设置的蓄能器连接，进油口14可与泵车液压系统中的液压泵通过管路连接，蓄能器和液压泵的压力油通过梭阀28的选择后为控制阀22提供稳定的控制油；回油口15和泄油口16可与泵车液压系统中设置的液压油箱通过管路连接；两个工作油口17可分别与泵车液压系统中设置的两个驱动油缸通过管路连接。
在一具体实施例中，如图1所示，当作业车辆为混凝土泵车时，泵车液压系统正常工作时，液压阀组的阀盖组件结构中的隔离活塞5处于常态位，阀盖组件上的应急油口132不通入应急工作油。当两个电磁阀(控制 阀22)线圈不通电时，工作阀11(工作阀11)的阀芯4位于中位；当如图1所示的右侧的工作阀线圈通电，如图1所示的左侧的工作阀线圈不通电时，如图1所示的右侧的工作阀位于左位，P1口与A1口导通，先导油作用在工作阀11的阀芯4的右端，使工作阀11阀芯4处于左位，此时工作阀11P3口与B3口导通，T3口与A3口导通；当如图1所示的左侧的工作阀线圈通电，如图1所示的右侧的工作阀线圈不通电时，如图1所示的左侧的工作阀位于左位，P2口与A2口导通，先导油作用在工作阀11的阀芯4的左端，使工作阀11阀芯4处于右位，此时工作阀11P3口与A3口导通，T3口与B3口导通。泵车液压系统正常工作工况下，液压阀组工作阀11的换向功能是通过电气信号给两个控制阀22电磁铁通电或断电来实现改变液流方向而实现的。
在实际工作中，当发生电气控制系统故障、断电、停电或控制阀22线圈失效而引起控制阀22工作失效时，可通过液压阀组左右两侧阀盖组件上的应急油口132接入可以交替换向的外部的应急控制油，使液压阀组实现应急工作功能。如图2所示，当右侧阀盖13应急油口132通入压力油，左侧阀盖13应急油口132接回油时，右侧阀盖13中的隔离活塞5在压力油的作用下运动压缩和推动弹簧座8，同时弹簧7推动弹簧座8，使与弹簧座8贴合的工作阀11的阀芯4运动至左位(如图2中箭头所指方向，表示阀芯运动的方向)，此时工作阀11P3口与B3口导通，T3口与A3口导通；当左侧阀盖13应急油口132通入压力油，右侧阀盖13应急油口132接回油时，左侧阀盖13中的隔离活塞5在压力油的作用下运动压缩弹簧7，使工作阀11的阀芯4运动至右位，此时工作阀11P3口与A3口导通，T3口与B3口导通。泵车液压系统应急工作工况下，液压阀组工作阀11的换向功能可通过交替的给液压阀组左右两侧阀盖13上的应急油口132接入压力油，在外接应急压力油的作用下推动左右两侧阀盖13上的隔离活塞5，使隔离活塞5的作用力经过弹簧7传导，从而实现工作阀11阀芯4的左右移动，使液压阀组恢复应急换向功能。其中，在隔离活塞5上还设置有密封槽，密封槽内设置有密封圈6，隔离活塞5与阀盖13的内孔为动密封配合。
在本说明书的描述中，术语“连接”、“安装”、“固定”等均应做广义理 解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
在本说明书的描述中，需要理解的是，术语“上”、“下”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或单元必须具有特定的方向、以特定的方位构造和操作，因此，不能理解为对本申请的限制。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种阀盖组件，其中，所述阀盖组件包括：
    阀盖，所述阀盖上设置有应急油口和与所述应急油口连通的油腔；
    隔离活塞，设置在所述油腔内，并与所述油腔滑动配合。
  2. 根据权利要求1所述的阀盖组件，其中，还包括：
    密封件，设置在所述油腔和所述隔离活塞之间。
  3. 根据权利要求1所述的阀盖组件，其中，还包括：
    弹性件，所述弹性件的第一端与所述隔离活塞相抵接，所述弹性件的另一端与弹簧座相抵接。
  4. 一种液压阀组，其中，包括：阀体组件和权利要求1至3中任一项所述的阀盖组件；所述阀盖组件安装在所述阀体组件上。
  5. 根据权利要求4所述的液压阀组，其中，所述阀体组件包括：
    工作阀；
    控制阀组，与所述工作阀连接；
    应急油路，分别与所述工作阀和所述阀盖组件连通。
  6. 根据权利要求5所述的液压阀组，其中，
    所述控制阀组包括两个控制油路，每个所述控制油路均包括控制阀和第一油路，所述控制阀通过所述第一油路与所述工作阀的液控口连通。
  7. 根据权利要求6所述的液压阀组，其中，
    所述第一油路上设置有切断装置，所述切断装置用于连通或断开所述第一油路。
  8. 根据权利要求6所述的液压阀组，其中，
    两个所述控制油路均还包括与所述控制阀对应连通的第二油路；
    两个所述第二油路中的一个用于供油，两个所述第二油路中的另一个用于回油。
  9. 一种液压驱动系统，其中，包括：如权利要求1至3中任一项所述的阀盖组件，或如权利要求4至8中任一项所述的液压阀组。
  10. 一种作业车辆，其中，包括如权利要求9所述的液压驱动系统。
PCT/CN2022/085106 2021-12-21 2022-04-02 阀盖组件、液压阀组、液压驱动系统和作业车辆 WO2023115747A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202123235592.X 2021-12-21
CN202123235592.XU CN216447219U (zh) 2021-12-21 2021-12-21 阀盖组件、液压阀组、液压驱动系统和作业车辆

Publications (1)

Publication Number Publication Date
WO2023115747A1 true WO2023115747A1 (zh) 2023-06-29

Family

ID=81374973

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/085106 WO2023115747A1 (zh) 2021-12-21 2022-04-02 阀盖组件、液压阀组、液压驱动系统和作业车辆

Country Status (2)

Country Link
CN (1) CN216447219U (zh)
WO (1) WO2023115747A1 (zh)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2913067B2 (ja) * 1990-07-25 1999-06-28 澤藤電機株式会社 電磁バルブ
JP2002339917A (ja) * 2001-05-22 2002-11-27 Yanmar Diesel Engine Co Ltd 作業機械
CN2596135Y (zh) * 2003-01-11 2003-12-31 大连理工大学 一种气控三通高温阀装置
CN101294590A (zh) * 2008-06-16 2008-10-29 哈尔滨工业大学 三级电液伺服阀应急保护装置
CN103603840A (zh) * 2013-11-26 2014-02-26 三一汽车制造有限公司 集成液压阀组及液压驱动系统及混凝土泵
CN203531842U (zh) * 2013-08-22 2014-04-09 重庆达腾科技发展有限公司 井口安全控制系统用中继阀
KR101478199B1 (ko) * 2013-11-20 2014-12-31 대성나찌유압공업(주) 유압실린더 제어밸브
CN105570473A (zh) * 2016-02-24 2016-05-11 湖北仁创科技有限公司 一种高压细水雾先导式非液力阻尼电磁分区阀
CN108488467A (zh) * 2018-05-23 2018-09-04 无锡锡梅特种汽车有限公司 一种设有应急装置的电磁换向阀
CN214466473U (zh) * 2020-12-31 2021-10-22 江苏二马液压元件有限公司 带应急推杆的双向二位二通电磁阀

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2913067B2 (ja) * 1990-07-25 1999-06-28 澤藤電機株式会社 電磁バルブ
JP2002339917A (ja) * 2001-05-22 2002-11-27 Yanmar Diesel Engine Co Ltd 作業機械
CN2596135Y (zh) * 2003-01-11 2003-12-31 大连理工大学 一种气控三通高温阀装置
CN101294590A (zh) * 2008-06-16 2008-10-29 哈尔滨工业大学 三级电液伺服阀应急保护装置
CN203531842U (zh) * 2013-08-22 2014-04-09 重庆达腾科技发展有限公司 井口安全控制系统用中继阀
KR101478199B1 (ko) * 2013-11-20 2014-12-31 대성나찌유압공업(주) 유압실린더 제어밸브
CN103603840A (zh) * 2013-11-26 2014-02-26 三一汽车制造有限公司 集成液压阀组及液压驱动系统及混凝土泵
CN105570473A (zh) * 2016-02-24 2016-05-11 湖北仁创科技有限公司 一种高压细水雾先导式非液力阻尼电磁分区阀
CN108488467A (zh) * 2018-05-23 2018-09-04 无锡锡梅特种汽车有限公司 一种设有应急装置的电磁换向阀
CN214466473U (zh) * 2020-12-31 2021-10-22 江苏二马液压元件有限公司 带应急推杆的双向二位二通电磁阀

Also Published As

Publication number Publication date
CN216447219U (zh) 2022-05-06

Similar Documents

Publication Publication Date Title
CN103047207A (zh) 分合流阀组、液压系统、负载敏感式液压系统及工程机械
CN108557675B (zh) 一种安全制动冗余恒减速液压站及其控制方法
CN108412847A (zh) 一种带负载补偿高位置精度的电静液执行器及控制方法
CN102840123B (zh) 双缸泵送系统防窜动停机方法、双缸泵送系统及泵送设备
WO2023115747A1 (zh) 阀盖组件、液压阀组、液压驱动系统和作业车辆
CN113007157A (zh) 负载敏感多路阀、臂架液压控制系统及混凝土泵车
CN108238561B (zh) 安全制动串联冗余二级制动液压站及其控制方法
CN112648409A (zh) 一种集成多路阀
JPS62261703A (ja) 安全弁装置
CN217708618U (zh) 液压动力系统及作业机械
CN114992175A (zh) 液压系统及作业机械
CN210531265U (zh) 一种具有应急卸荷保护的多路阀
CN111043095B (zh) 一种零泄漏双液压系统转换装置
CN103410804B (zh) 液压双泵合流控制装置及全地面起重机
CN110486341B (zh) 液压控制系统以及移动式工作设备
CN218439988U (zh) 一种转叶舵机转舵油缸故障隔离插装阀及转叶舵机
CN213598289U (zh) 一种通流量大的电磁调速阀
CN216447218U (zh) 液压阀组、液压驱动系统和作业车辆
CN219345112U (zh) 一种具有防內泄结构的应急液压系统及特种游乐设备
CN115523203B (zh) 一种转叶舵机转舵油缸故障隔离阀组及转叶舵机
CN211145175U (zh) 液压离合器的控制组件
CN219619117U (zh) 一种适用于电液转辙机的液压动力单元
CN218509825U (zh) 一种环卫设备用液压阀组
CN220151900U (zh) 储罐安全阀
CN113983017B (zh) 多路阀换向联及液压系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22909085

Country of ref document: EP

Kind code of ref document: A1