WO2014047814A1 - 一种悬挂系统、通断控制系统及其检测方法 - Google Patents

一种悬挂系统、通断控制系统及其检测方法 Download PDF

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Publication number
WO2014047814A1
WO2014047814A1 PCT/CN2012/082048 CN2012082048W WO2014047814A1 WO 2014047814 A1 WO2014047814 A1 WO 2014047814A1 CN 2012082048 W CN2012082048 W CN 2012082048W WO 2014047814 A1 WO2014047814 A1 WO 2014047814A1
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WIPO (PCT)
Prior art keywords
opening
valve
control
control valve
pressure
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2012/082048
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English (en)
French (fr)
Inventor
詹纯新
刘权
宋院归
李英智
李义
张建军
张虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Zoomlion Special Vehicle Co Ltd
Zoomlion Heavy Industry Science and Technology Co Ltd
Original Assignee
Hunan Zoomlion Special Vehicle Co Ltd
Zoomlion Heavy Industry Science and Technology Co Ltd
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Filing date
Publication date
Application filed by Hunan Zoomlion Special Vehicle Co Ltd, Zoomlion Heavy Industry Science and Technology Co Ltd filed Critical Hunan Zoomlion Special Vehicle Co Ltd
Priority to PCT/CN2012/082048 priority Critical patent/WO2014047814A1/zh
Publication of WO2014047814A1 publication Critical patent/WO2014047814A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/018—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method
    • B60G17/0185—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the use of a specific signal treatment or control method for failure detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
    • B60G17/019—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/056—Regulating distributors or valves for hydropneumatic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/50—Pressure
    • B60G2400/51—Pressure in suspension unit
    • B60G2400/518—Pressure in suspension unit in damper
    • B60G2400/5182—Fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/08—Failure or malfunction detecting means

Definitions

  • the invention relates to the technical field of group control of a multi-bridge chassis engineering mechanical suspension system, in particular to a suspension system, an on-off control system and a detection method thereof. Background technique
  • the power circuit and the power failure of the pneumatic solenoid valve control the opening and closing of the air circuit, and the connection and disconnection of the suspension group control valve are controlled by the on/off of the air circuit, thereby controlling the change of the suspension group.
  • the suspension system group control system in the prior art involves multi-level control between hydraulic, electric, pneumatic, etc., when the operator presses the group switching button, it cannot directly judge that the grouping status of the suspension system has reached the required level.
  • the grouping condition any error in any link, will lead to failure of the suspension system grouping, such as the suspension system does not change in place, or the suspension system does not need to change when the group changes, such phenomenon will cause the shaft load imbalance , posing a safety hazard to the crane driving process and the running process.
  • the present invention provides a suspension grouping valve block for a multi-bridge suspension system that can detect the status of a grouping operation to improve safety in group operation of a multi-bridge suspension system.
  • the present invention also provides a suspension grouping system which has high security when performing grouping operations.
  • the present invention also provides a method for detecting the above-described hanging grouping system.
  • An on/off control system for a hydraulic system oil passage comprising:
  • Two hydraulically controlled check valves connected to the hydraulic system oil passage and opposite to the oil inlet; a pressure sensor located on the oil passage between the inlet ports of the two hydraulic control check valves, for collecting the two liquids Control the pressure information of the oil in the pipeline between the oil inlets of the check valve;
  • the signal is connected to the pressure sensor, controls the operation of the air control device, and determines a controller of the hydraulic system oil passage on and off according to the pressure information collected by the pressure sensor.
  • the control valve group includes a pressure oil circuit, a control oil circuit and a two-position three-way control valve; the first opening of the two-position three-way control valve is in communication with the control oil passage, and the second opening and the pressure oil One end of the road is connected, and the third opening is connected to the oil passage; when the two three-way vent control valves are opened, the first opening and the second opening are closed, and when the two-position three vent control valves are closed, the first opening and the third opening Opening communication;
  • the control oil passage is in communication with the pilot chambers of the two pilot valves;
  • the air control device is connected to the two-position three vent control valve, and the two-three vent control valve is opened and closed by the on-off of the air control device.
  • the other end of the pressure oil passage is in communication with the first connection port or the second connection port.
  • the air control device comprises:
  • the air control pipeline has an external air source connected to one end and a two-position three vent control valve at the other end; a pneumatic solenoid valve is disposed between the external air source and the two-position three vent control valve, and is connected with the controller signal
  • the pneumatic solenoid valve When the pneumatic solenoid valve is opened, the air control device controls the two three-three vent control valves to be opened, and when the pneumatic electromagnetic valve is closed, the two-position three vent control valves are closed.
  • a damping hole is disposed between the first opening of the two-position three-way control valve and the pilot chambers of the two pilot-operated check valves.
  • the invention also provides a multi-bridge suspension system comprising at least two suspension cylinder groups, each phase An on/off control system is disposed on the oil passage between the two adjacent suspension cylinder groups; wherein the on/off control system comprises:
  • Two hydraulically controlled check valves connected to the hydraulic system oil passage and opposite to the oil inlet; a pressure sensor located on the oil passage between the inlet ports of the two hydraulic control check valves, for collecting the two liquids Control the pressure information of the oil in the pipeline between the oil inlets of the check valve;
  • the signal is connected to the pressure sensor, controls the operation of the air control device, and determines a controller of the hydraulic system oil passage on and off according to the pressure information collected by the pressure sensor.
  • the control valve group includes a pressure oil circuit, a control oil circuit and a two-position three-way control valve; the first opening of the two-position three-way control valve is in communication with the control oil passage, and the second opening and the pressure oil One end of the road is connected, and the third opening is connected to the oil passage; when the two three-way vent control valves are opened, the first opening and the second opening are closed, and when the two-position three vent control valves are closed, the first opening and the third opening Opening communication;
  • the control oil passage is in communication with the pilot chambers of the two pilot valves;
  • the air control device is connected to the two-position three vent control valve, and the two-three vent control valve is opened and closed by the on-off of the air control device.
  • the other end of the pressure oil passage is in communication with the first connection port or the second connection port.
  • the air control device comprises:
  • the air control pipeline has an external air source connected to one end and a two-position three vent control valve at the other end; a pneumatic solenoid valve is disposed between the external air source and the two-position three vent control valve, and is connected with the controller signal
  • the pneumatic solenoid valve When the pneumatic solenoid valve is opened, the air control device controls the two three-three vent control valves to be opened, and when the pneumatic electromagnetic valve is closed, the two-position three vent control valves are closed.
  • the external air source is a high pressure gas storage tank.
  • the first opening of the two-position three vent control valve and the two pilots of the pilot operated check valve There are damping holes between the cavities.
  • the method further comprises:
  • the invention also provides a detection method for a multi-bridge suspension system, comprising:
  • the signal judges that the controller judges the pressure information collected by each pressure sensor.
  • the pressure information of at least one pressure sensor is abnormal, it is judged that the grouping operation is faulty, and the grouping operation is terminated; when the pressure information of all the pressure sensors is normal, the judgment is made.
  • the grouping operation was successful.
  • the step signal is judged:
  • the controller compares the pressure information collected by each pressure sensor with a standard pressure value, and then compares the comparison result with the normal result between the respective pressure information and the standard pressure value, when the comparison result of the at least one pressure information is If the normal result does not match, it is judged that the grouping operation is faulty, and the grouping operation is terminated. When the comparison result of all the pressure information is consistent with the normal result, the grouping operation is judged to be successful.
  • the on/off control system for the hydraulic circuit of the hydraulic system provided by the invention comprises:
  • Two hydraulically controlled check valves connected to the hydraulic system oil passage and opposite to the oil inlet; a pressure sensor located on the oil passage between the inlet ports of the two hydraulic control check valves, for collecting the two liquids Control the pressure information of the oil in the pipeline between the oil inlets of the check valve;
  • the signal is connected to the pressure sensor, controls the operation of the air control device, and determines a controller of the hydraulic system oil passage on and off according to the pressure information collected by the pressure sensor.
  • the suspension system and the concept of the suspension cylinder group in the suspension system are introduced; in the multi-bridge suspension system, the oil path between the adjacent two suspension cylinder groups A hydraulically controlled check valve having two inlet ports is provided, and only when the two pilot valves are opened, the oil passage between the adjacent two suspension cylinder groups can be turned on; the control valve group Under the control of the air control device, when the oil passage between the two adjacent suspension cylinder groups needs to be turned on, the air control device drives the control valve group to open, and the pressure oil enters the two liquids under the control of the control valve group.
  • the pilot chamber of the check valve is controlled to open two hydraulic control check valves, and the adjacent two suspension cylinder groups are connected.
  • the pressure information collected by the pressure sensor is the oil of the two suspension cylinder groups.
  • the first pressure value when the two adjacent suspension cylinder groups are not connected, the air control device drives the control valve group to be closed, the oil discharge between the two pilot valves and the two pilot valves , two hydraulic control check valves
  • the two suspension cylinder groups are disconnected.
  • the pressure information collected by the pressure sensor is the second pressure value; the controller determines the two hydraulic control check valves according to the first pressure value and the second pressure value collected by the pressure sensor.
  • the open state and the closed state are used to determine whether two adjacent suspension cylinder groups are connected, thereby determining whether the grouping operation is successful.
  • the suspension grouping valve group provided by the invention can collect the pressure information through the pressure sensor, and judge the pressure information through the controller, thereby detecting the state of the grouping operation, so as to improve the safety of the grouping operation of the multi-bridge suspension system.
  • the present invention also provides a multi-bridge suspension system comprising at least two suspension cylinder groups, an on-off control system on each of the two adjacent suspension cylinder groups; wherein the on-off control
  • the system includes:
  • Two hydraulically controlled check valves connected to the hydraulic system oil passage and opposite to the oil inlet; a pressure sensor located on the oil passage between the inlet ports of the two hydraulic control check valves, for collecting the two liquids Control the pressure information of the oil in the pipeline between the oil inlets of the check valve;
  • the pressure information collected by the sensor determines the controller of the hydraulic system oil passage.
  • the suspension system has high security in the grouping operation, and the principle thereof will not be described herein.
  • the invention also provides a detection method for a multi-bridge suspension system, comprising:
  • the signal judges that the controller judges the pressure information collected by each pressure sensor.
  • the pressure information of at least one pressure sensor is abnormal, it is judged that the grouping operation is faulty, and the grouping operation is terminated; when the pressure information of all the pressure sensors is normal, the judgment is made.
  • the grouping operation was successful.
  • the state of the packet between the respective suspension cylinder groups in the suspension system grouping operation can be detected, and the safety in the grouping operation is improved.
  • FIG. 1 is a schematic diagram of the principle of a suspension grouping valve group provided by the present invention.
  • FIG. 2 is a schematic diagram of the principle of the suspension system provided by the present invention.
  • FIG. 3 is a structural schematic diagram of a suspension system provided by the present invention.
  • this embodiment provides an on/off control system for a hydraulic system oil passage of a multi-bridge suspension system, in order to facilitate the operation of the on/off control system of the hydraulic system of the above hydraulic system.
  • the present embodiment introduces the concept of the suspension system and the suspension cylinder group in the suspension system, and describes two adjacent suspension cylinder groups 90 and suspension cylinder groups 91 as an example; the above-mentioned hydraulic system oil passages are turned on and off.
  • the control system includes:
  • the pressure sensor 4 located on the oil passage between the oil inlet of the pilot operated check valve 11 and the oil inlet of the pilot operated check valve 12 is used for collecting the oil inlet of the hydraulic control check valve 11 and the hydraulic control one-way Pressure information of the oil in the oil passage between the oil inlets of the valve 12;
  • control valve group for controlling the hydraulic control check valve 11 and the hydraulic control check valve 12 to be opened or closed;
  • the air control device for controlling the opening or closing of the control valve group;
  • the signal is connected to the pressure sensor 4, controls the operation of the air control device, and determines a controller (not shown) of the hydraulic system oil passage according to the pressure information collected by the pressure sensor 4.
  • the oil passage 10 between the adjacent two suspension cylinder groups is provided with two hydraulic control check valves 11 and a hydraulic control check valve 12 opposite to the oil inlet port, only when the hydraulic control valve When both the valve 11 and the pilot check valve 12 are opened, the oil passage 10 between the adjacent two suspension cylinder groups can be turned on, as shown in FIGS.
  • the oil passage 10 The A end is connected to the suspension cylinder group 90, and the B end is connected to the suspension cylinder group 91; the control valve group is operated under the control of the air control device, and when the adjacent suspension cylinder group 90 and the suspension cylinder group 91 need to be connected, the air control device
  • the driving control valve group is opened, and the pressurized oil enters the pilot chamber of the hydraulic control check valve 11 and the hydraulic control check valve 12 under the control of the control valve group, and the hydraulic control check valve 11 and the hydraulic control check valve 12 are opened.
  • the adjacent suspension cylinder group 90 and the suspension cylinder group 91 are in communication.
  • the pressure information collected by the pressure sensor 4 is the first pressure value of the oil in the suspension cylinder group 90 and the suspension cylinder group 91; when adjacent suspension When the cylinder group 90 and the suspension cylinder group 91 are not connected, the air control device drives the control valve group to be closed, and the hydraulic control unit The oil is discharged between the pilot chamber of the valve 11 and the pilot operated check valve 12 and between the pilot operated check valve 11 and the pilot operated check valve 12, and the pilot operated check valve 11 and the pilot operated check valve 12 are closed. , Suspension cylinder set 90 and suspension oil The cylinder group 91 is disconnected.
  • the pressure information collected by the pressure sensor 4 is the second pressure value; the controller determines the hydraulic control check valve 11 and the hydraulic control according to the first pressure value and the second pressure value collected by the pressure sensor 4
  • the open state and the closed state of the check valve 12 determine whether the adjacent suspension cylinder group 90 and the suspension cylinder group 91 are in communication, thereby determining whether the grouping operation is successful.
  • the suspension grouping valve group provided by the present invention can detect the state of the grouping operation to improve the time security of the multi-bridge suspension system grouping operation.
  • the control valve group includes a pressure oil passage 6, a control oil passage 5, and a three-position three vent control valve 2; a first opening of the two-position three vent control valve 2 and a control oil
  • the road 5 is connected, the second opening is connected to the 6-end of the pressure oil passage, and the third opening is connected to the return oil passage 3;
  • the control oil passage 5 is connected with the pilot chamber of the hydraulic control check valve 11 and the pilot valve 12;
  • the air control device 7 is connected to the two-position three vent control valve 2, and the opening and closing of the two-position three vent control valve 2 is controlled by the on/off of the air control device.
  • the first opening and the second opening are connected, that is, the pressure oil passage 6 is connected to the control oil passage 5, and the pressure oil in the pressure oil passage 6 is passed through the control oil passage 5 to the liquid control sheet.
  • the pilot operated check valve 11 and the pilot operated check valve 12 are opened to the pilot chamber of the valve 11 and the pilot operated check valve 12, and the suspension cylinder group 90 and the suspension cylinder group 91 are connected; the two three vent control valves 2 are closed.
  • the first opening communicates with the third opening to further connect the control oil passage 5 with the return oil passage 3, the pilot valve of the pilot operated check valve 11 and the pilot operated check valve 12, and the pilot valve 11 and the liquid control valve
  • the oil between the check valves 12 is discharged through the control oil passage 5, and the pilot check valve 11 and the pilot check valve 12 are closed.
  • the pressure oil in order to ensure that the oil pressure in the pressure oil passage is the same as the pressure of the oil in the suspension cylinder group 90 and the suspension cylinder group 91 when the suspension cylinder group 90 and the suspension cylinder group 91 are communicated, preferably, the pressure oil
  • the other end of the path 6 is in communication with the first connection port A or the second connection port B.
  • the above air control device comprises:
  • the air control pipeline 7 has one end C connected to the external air source 8 and the other end connected to the two-position three vent control valve 2;
  • the pneumatic solenoid valve 71 is disposed between the external air source 8 and the two-position three vent control valve 2, and is connected with the controller signal; when the pneumatic solenoid valve 71 is opened, the air control device controls the two-position three vent control valve 2 to open, pneumatically When the solenoid valve 71 is closed, the two-position three vent control valve 2 is closed.
  • the pressure of the oil in the pressure oil passage 6 is changed too fast to open and close the pilot operated check valve.
  • the first opening of the two-position three vent control valve 2 and the pilot chamber of the pilot check valve 11 and the pilot valve 12 are provided with a damping hole 51.
  • the embodiment provides a multi-bridge suspension system including at least two suspension cylinder groups, and an on-off control system is provided on an oil path between each adjacent two suspension cylinder groups;
  • the break control system includes:
  • the pressure sensor 4 located on the oil passage between the oil inlet of the pilot operated check valve 11 and the oil inlet of the pilot operated check valve 12 is used for collecting the oil inlet of the hydraulic control check valve 11 and the hydraulic control one-way Pressure information of the oil in the oil passage between the oil inlets of the valve 12;
  • control valve group for controlling the hydraulic control check valve 11 and the hydraulic control check valve 12 to be opened or closed;
  • the air control device for controlling the opening or closing of the control valve group;
  • the signal is connected to the pressure sensor 4, controls the operation of the air control device, and determines a controller (not shown) of the hydraulic system oil passage according to the pressure information collected by the pressure sensor 4.
  • the oil passage 10 between the group 90 and the suspension cylinder group 91 is provided with two hydraulic control check valves 11 and a hydraulic control check valve 12 opposite to the oil inlet port, only when the hydraulic control check valve 11 and the hydraulic control one-way valve When the valve 12 is opened, the oil passage 10 between the adjacent two suspension cylinder groups can be turned on. Taking the example shown in FIG. 1 and FIG.
  • the A end of the oil passage 10 is connected to the suspension cylinder group 90, and the B end is connected to the suspension cylinder group 91; the control valve group is operated under the control of the air control device, and the adjacent suspension is required.
  • the air control device drives the control valve group to open, and the pressure oil enters the pilot chamber of the hydraulic control check valve 11 and the hydraulic control check valve 12 under the control of the control valve group, The hydraulic control check valve 11 and the hydraulic control check valve 12 are opened, and the adjacent suspension cylinder group 90 and the suspension cylinder group 91 are communicated.
  • the pressure information collected by the pressure sensor 4 is the suspension cylinder group 90 and the suspension cylinder.
  • the pilot chamber and the oil discharge between the pilot valve 11 and the pilot valve 12 are closed, the pilot check valve 11 and the pilot valve 12 are closed, and further, the cylinder group 90 and the suspension cylinder group are suspended.
  • 91 is disconnected, at this time, the pressure information collected by the pressure sensor 4 is the second pressure value;
  • the first and second pressure values collected by the pressure sensor 4 are used to determine the open state and the closed state of the pilot check valve 11 and the pilot check valve 12, thereby determining the adjacent suspension cylinder group 90 and the suspension cylinder. Whether the group 91 is connected, and then determines whether the grouping operation is successful. Therefore, the suspension grouping valve group provided by the present invention can detect the state of the grouping operation to improve the time security of the multi-bridge suspension system grouping operation.
  • suspension group valve group D There is a suspension group valve group D, and the suspension cylinder group 93 is adjacent to the suspension cylinder group 94 with a suspension group valve group E therebetween; when the suspension group valve group D is opened and the suspension group valve group E is closed, the suspension cylinder The group 92 and the suspension cylinder group 93 are connected to form one group, and the suspension cylinder group 94 is self-contained; when the suspension group valve group D is closed and the suspension group valve group E is opened, the suspension cylinder group 93 is connected with the suspension cylinder group 94 to form a group.
  • the suspension cylinder group 92 is in a group; and when the suspension group valve group D and the suspension group valve group E are both closed, the suspension cylinder group 92, the suspension cylinder group 93, and the suspension cylinder group 94 are each in a group; and the suspension cylinder
  • the specific grouping of group 92, suspension cylinder group 93 and suspension cylinder group 94 can be achieved by suspending the pressure sensor of group valve group D.
  • the pressure sensor 42 that collects the pressure information and suspends the group valve group E collects the pressure information, and judges the two sets of information through the controller, thereby obtaining the suspension cylinder group 92, the suspension cylinder group 93, and the suspension cylinder group 94.
  • the state between the two is detected to ensure the safety of the grouping operation between the suspension cylinder group 92, the suspension cylinder group 93, and the suspension cylinder group 94.
  • the principle when the suspension cylinder group is more groups is the same as the above principle, and will not be described here.
  • the pressure sensors of the suspension grouping valve group between the plurality of sets of suspension cylinder groups can share a set of controllers, which simplifies the structure of the suspension system.
  • the control valve group includes a pressure oil passage 6, a control oil passage 5, and a two-position three vent control valve 2; the first opening of the two-position three vent control valve 2 communicates with the control oil passage 5, The second opening is connected to the 6-end of the pressure oil passage, and the third opening is connected to the return oil passage 3; the control oil passage 5 is connected with the pilot chamber of the hydraulic control check valve 11 and the hydraulic control check valve 12; meanwhile, the air control device 7 and The two three vent control valves 2 are connected, and the two three vent control valves 2 are opened and closed by the on/off of the air control device.
  • the two three vent control valves 2 When the two three vent control valves 2 are opened, the first opening and the second opening are connected, that is, the pressure oil passage 6 is connected to the control oil passage 5, and the pressure oil in the pressure oil passage 6 is passed through the control oil passage 5 to the hydraulic control sheet.
  • the pilot operated check valve 11 and the pilot operated check valve 12 are opened to the pilot chamber of the valve 11 and the pilot operated check valve 12, and the suspension cylinder group 90 and the suspension cylinder group 91 are connected; the two three vent control valves 2 are closed.
  • the first opening communicates with the third opening to further connect the control oil passage 5 with the return oil passage 3, the pilot valve of the pilot operated check valve 11 and the pilot operated check valve 12, and the pilot valve 11 and the liquid control valve
  • the oil between the check valves 12 is discharged through the control oil passage 5, and the pilot check valve 11 and the pilot check valve 12 are closed.
  • the pressure oil in order to ensure that the oil pressure in the pressure oil passage is the same as the pressure of the oil in the suspension cylinder group 90 and the suspension cylinder group 91 when the suspension cylinder group 90 and the suspension cylinder group 91 are communicated, preferably, the pressure oil
  • the other end of the path 6 is in communication with the first connection port A or the second connection port B.
  • the above air control device comprises:
  • Air control line 7, one end C is connected with external air source 8, and the other end is connected with two-position three vent control valve 2 Connect
  • the pneumatic solenoid valve 71 is disposed between the external air source 8 and the two-position three vent control valve 2, and is connected with the controller signal; when the pneumatic solenoid valve 71 is opened, the air control device controls the two-position three vent control valve 2 to open, pneumatically When the solenoid valve 71 is closed, the two-position three vent control valve 2 is closed.
  • the external air source 8 is a high pressure gas storage tank.
  • the air control device 7 in each of the above suspension grouping valve groups can share an external air source 8, as shown in FIG.
  • a damping hole 51 is provided between the first opening of the two-position three vent control valve 2 and the pilot chambers of the pilot check valve 11 and the pilot operated check valve 12.
  • the suspension system further includes:
  • a switch signal receiving device (not shown) that receives the operation switch signal and transmits the signal to the controller
  • the controller controls the opening or closing of the pneumatic solenoid valve 71 according to the switching signal of the switching signal receiving device or the operating condition signal of the operating condition detecting device.
  • the suspension system can not only perform group work according to the specific operation of the operator, but also can automatically adjust the suspension according to the specific working conditions without the operator's operation, thereby improving the self-adjusting ability of the suspension system.
  • the embodiment provides a method for detecting a multi-bridge suspension system, including: Step S401: Signal acquisition, and collecting a pipeline between two hydraulic control check valves through a pressure sensor in each suspension grouping valve group The pressure information of the medium oil is transmitted to the controller; Step S402: The signal is judged, the controller judges the pressure information collected by each pressure sensor, and when the pressure information of the at least one pressure sensor is abnormal, the group operation is judged. A failure occurs, the grouping operation is terminated; when the pressure information of all the pressure sensors is normal, the grouping operation is judged to be successful.
  • the detection method provided according to the present invention can group the suspension cylinders in the operation of the suspension system The group status between groups is detected, which improves the security of the grouping operation.
  • step S402 the signal is judged:
  • the controller compares the pressure information collected by each pressure sensor with a standard pressure value, and then compares the comparison result with the normal result between each pressure information and the standard pressure value, when the comparison result of at least one pressure information and the normal result If it does not match, it is judged that the grouping operation is faulty, and the grouping operation is terminated; when the comparison result of all the pressure information is consistent with the normal result, the grouping operation is judged to be successful.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

一种多桥悬挂系统的悬挂分组阀组、悬挂系统及其检测方法，包括连通在液压系统油路（10）上且入油口相对的两个液控单向阀（11，12）；位于两液控单向阀（11，12）入油口之间的油路（10）上的压力传感器（4），用于采集两液控单向阀（11，12）的入油口之间管路内油液的压力信息；同时控制两液控单向阀（11，12）开启或关闭的控制阀组；控制控制阀组开启或者闭合的气控装置（7）；信号连接压力传感器（4），控制气控装置（7）动作，并根据压力传感器（4）采集的压力信息判断液压系统油路（10）通断的控制器。

Description

一种悬挂系统、 通断控制系统及其检测方法
技术领域
本发明涉及多桥底盘工程机械悬挂系统分组控制技术领域， 特别涉及 一种悬挂系统、 通断控制系统及其检测方法。 背景技术
在多桥底盘工程机械悬挂系统分组控制技术领域， 特别是大吨位或者 超大吨位或全地面起重机等流动式起重机的悬挂系统分组切换的控制技术 中， 目前， 大多采用以下方式进行控制：
通过气动电磁阀的得电和失电控制气路的通断， 并通过气路的通断控 制悬挂分组控制阀的连通和断开， 进而控制悬挂分组的变化。
现有技术中的悬挂系统分组控制系统中涉及到液压、 电气、 气路等之 间的多级控制， 当操作者按下分组切换按钮后， 并不能直接判断悬挂系统 的分组状况达到了所需要的分组工况， 任何一个环节出现差错， 都会导致 悬挂系统分组失败， 如悬挂系统未变化到位， 或悬挂系统不需要分组变化 时却发生变化等现象， 此类现象会产生轴荷不平衡的状况， 给起重机行驶 过程、 以及运行过程带来安全隐患。 发明内容
本发明提供了一种多桥悬挂系统的悬挂分组阀组， 该悬挂分组阀组可 以对分组操作的状态进行检测， 以提高多桥悬挂系统分组操作时的安全性。
本发明还提供了一种悬挂分组系统， 该悬挂分组系统进行分组操作时 的安全性较高； 另外本发明还提供了一种上述悬挂分组系统的检测方法。
为达到上述目的， 本发明提供以下技术方案： 一种液压系统油路的通断控制系统， 包括：
连通在所述液压系统油路上且入油口相对的两个液控单向阀； 位于两所述液控单向阀入油口之间的油路上的压力传感器， 用于采集 两所述液控单向阀的入油口之间管路内油液的压力信息；
同时控制两所述液控单向阀开启或关闭的控制阀组；
控制所述控制阀组开启或者闭合的气控装置；
信号连接所述压力传感器， 控制所述气控装置动作， 并根据所述压力 传感器采集的压力信息判断所述液压系统油路通断的控制器。
优选地， 所述控制阀组包括压力油路、 控制油路和两位三通气控阀； 所述两位三通气控阀的第一开口与所述控制油路连通， 第二开口与压力油 路一端连通， 第三开口连接回油路； 所述两位三通气控阀开启时， 第一开 口和第二开口接通， 所述两位三通气控阀关闭时， 第一开口与第三开口连 通；
所述控制油路与两所述液控单向阀的先导腔连通；
所述气控装置与所述两位三通气控阀连接， 通过气控装置的通断控制 所述两位三通气控阀的开启和关闭。
优选地， 所述压力油路的另一端与所述第一连接端口或者第二连接端 口连通。
优选地， 所述气控装置包括：
气控管路， 一端连接有外接气源， 另一端与两位三通气控阀连接； 气动电磁阀， 设置于外接气源与两位三通气控阀之间， 且与所述控制 器信号连接； 所述气动电磁阀开启时， 气控装置控制所述两位三通气控阀 开启， 所述气动电磁阀关闭时， 两位三通气控阀关闭。
优选地， 所述两位三通气控阀的第一开口与两所述液控单向阀的先导 腔之间设有阻尼孔。
本发明还提供了一种多桥悬挂系统， 包括至少两个悬挂油缸组， 每相 邻的两个所述悬挂油缸组之间的油路上具有一个通断控制系统； 其中， 所 述通断控制系统包括：
连通在所述液压系统油路上且入油口相对的两个液控单向阀； 位于两所述液控单向阀入油口之间的油路上的压力传感器， 用于采集 两所述液控单向阀的入油口之间管路内油液的压力信息；
同时控制两所述液控单向阀开启或关闭的控制阀组；
控制所述控制阀组开启或者闭合的气控装置；
信号连接所述压力传感器， 控制所述气控装置动作， 并根据所述压力 传感器采集的压力信息判断所述液压系统油路通断的控制器。
优选地， 所述控制阀组包括压力油路、 控制油路和两位三通气控阀； 所述两位三通气控阀的第一开口与所述控制油路连通， 第二开口与压力油 路一端连通， 第三开口连接回油路； 所述两位三通气控阀开启时， 第一开 口和第二开口接通， 所述两位三通气控阀关闭时， 第一开口与第三开口连 通；
所述控制油路与两所述液控单向阀的先导腔连通；
所述气控装置与所述两位三通气控阀连接， 通过气控装置的通断控制 所述两位三通气控阀的开启和关闭。
优选地， 所述压力油路的另一端与所述第一连接端口或者第二连接端 口连通。
优选地， 所述气控装置包括：
气控管路， 一端连接有外接气源， 另一端与两位三通气控阀连接； 气动电磁阀， 设置于外接气源与两位三通气控阀之间， 且与所述控制 器信号连接； 所述气动电磁阀开启时， 气控装置控制所述两位三通气控阀 开启， 所述气动电磁阀关闭时， 两位三通气控阀关闭。
优选地， 所述外接气源为高压气储气罐。
优选地， 所述两位三通气控阀的第一开口与两所述液控单向阀的先导 腔之间设有阻尼孔。
优选地， 还包括：
接收操作开关信号、 并将信号传输给所述控制器的开关信号接收装置; 采集工况信号、 并将工况信号传输给所述控制器的工况检测装置； 所述控制器根据开关信号接收装置的开关信号， 或者所述工况检测装 置的工况信号控制所述气动电磁阀的开启或者关闭。
本发明还提供了一种多桥悬挂系统的检测方法， 包括：
信号采集， 每一个悬挂分组阀组中通过压力传感器采集两液控单向阀 之间管路中油液的压力信息， 并将压力信息传输给控制器；
信号判断， 控制器对每一个压力传感器采集的压力信息进行判断， 当 至少一个压力传感器的压力信息出现异常时， 判断分组操作出现故障， 终 止分组操作； 当所有压力传感器的压力信息正常时， 判断分组操作成功。
优选地， 所述步骤信号判断中：
所述控制器将每一个压力传感器采集的压力信息与一个标准压力值进 行比较， 然后将比较结果与各个压力信息与标准压力值之间的正常结果进 行对比， 当至少一个压力信息的比较结果与正常结果不符时， 判断分组操 作出现故障， 终止分组操作； 当所有压力信息的比较结果与其正常结果都 相符时， 判断分组操作成功。
本发明提供的液压系统油路的通断控制系统， 包括：
连通在所述液压系统油路上且入油口相对的两个液控单向阀； 位于两所述液控单向阀入油口之间的油路上的压力传感器， 用于采集 两所述液控单向阀的入油口之间管路内油液的压力信息；
同时控制两所述液控单向阀开启或关闭的控制阀组；
控制所述控制阀组开启或者闭合的气控装置；
信号连接所述压力传感器， 控制所述气控装置动作， 并根据所述压力 传感器采集的压力信息判断所述液压系统油路通断的控制器。 为便于对上述悬挂分组阀组的工作原理的描述， 此处引出的悬挂系统 以及悬挂系统中悬挂油缸组的概念； 在多桥悬挂系统中， 相邻的两个悬挂 油缸组之间的油路上设置有两个入油口相对的液控单向阀， 只有当两个液 控单向阀都开启时， 上述相邻的两个悬挂油缸组之间的油路才能实现导通; 控制阀组在气控装置的控制下动作， 需要将相邻的两个悬挂油缸组之间的 油路导通时， 气控装置驱动控制阀组开启， 压力油液在控制阀组控制下进 入两个液控单向阀的先导腔， 将两个液控单向阀打开， 相邻的两个悬挂油 缸组之间连通， 此时， 压力感应器采集的压力信息为两个悬挂油缸组内部 油液的第一压力值； 当相邻的两个悬挂油缸组不连通时， 气控装置驱动控 制阀组关闭， 两个液控单向阀先导腔内以及两液控单向阀之间的油液排出， 两个液控单向阀关闭， 两个悬挂油缸组断开， 此时， 压力传感器采集的压 力信息为第二压力值； 控制器根据压力传感器采集的第一压力值和第二压 力值来判断两个液控单向阀的开启状态与闭合状态， 进而判断相邻的两个 悬挂油缸组是否连通， 进而判断分组操作是否成功。
因此， 本发明提供的悬挂分组阀组可以通过压力传感器采集压力信息， 并通过控制器对压力信息进行判断， 进而对分组操作的状态进行检测， 以 提高多桥悬挂系统分组操作的时安全性。
本发明还提供了一种多桥悬挂系统， 包括至少两个悬挂油缸组， 每相 邻的两个所述悬挂油缸组之间的油路上具有一个通断控制系统； 其中， 所 述通断控制系统包括：
连通在所述液压系统油路上且入油口相对的两个液控单向阀； 位于两所述液控单向阀入油口之间的油路上的压力传感器， 用于采集 两所述液控单向阀的入油口之间管路内油液的压力信息；
同时控制两所述液控单向阀开启或关闭的控制阀组；
控制所述控制阀组开启或者闭合的气控装置；
信号连接所述压力传感器， 控制所述气控装置动作， 并根据所述压力 传感器采集的压力信息判断所述液压系统油路通断的控制器。
该悬挂系统在分组操作中的安全性较高， 其原理这里不再赘述。
本发明还提供了一种多桥悬挂系统的检测方法， 包括：
信号采集， 每一个悬挂分组阀组中通过压力传感器采集两液控单向阀 之间管路中油液的压力信息， 并将压力信息传输给控制器；
信号判断， 控制器对每一个压力传感器采集的压力信息进行判断， 当 至少一个压力传感器的压力信息出现异常时， 判断分组操作出现故障， 终 止分组操作； 当所有压力传感器的压力信息正常时， 判断分组操作成功。
根据本发明提供的检测方法可以对悬挂系统分组操作中各个悬挂油缸 组之间的分组状态进行检测， 提高了分组操作时的安全性。 附图说明
图 1为本发明提供的悬挂分组阀组的原理示意图；
图 2为本发明提供的悬挂系统的原理示意图；
图 3为本发明提供的悬挂系统的一种结构原理图；
图 4为本发明提供的检测方法的流程图。 具体实施方式
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进 行清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没 有做出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的 范围。
实施例一
如图 1和图 2所示， 本实施例提供了一种多桥悬挂系统的液压系统油 路的通断控制系统， 为便于对上述液压系统油路的通断控制系统的工作原 理进行描述， 本实施例引入了悬挂系统以及悬挂系统中悬挂油缸组的概念， 且以两个相邻的悬挂油缸组 90和悬挂油缸组 91为例进行描述； 上述液压 系统油路的通断控制系统包括：
连通在液压系统油路 10上且入油口相对的两个液控单向阀， 如图 1中 所示液控单向阀 11和液控单向阀 12，液控单向阀 11和液控单向阀 12的入 油口相对设置；
位于液控单向阀 11 的入油口和液控单向阀 12的入油口之间的油路上 的压力传感器 4，用于采集液控单向阀 11的入油口和液控单向阀 12的入油 口之间的油路内油液的压力信息；
同时控制液控单向阀 11和液控单向阀 12开启或关闭的控制阀组； 控制控制阀组开启或者闭合的气控装置；
信号连接压力传感器 4，控制气控装置动作， 并根据压力传感器 4采集 的压力信息判断液压系统油路通断的控制器 （图中未示出）。
在多桥悬挂系统中， 相邻的两个悬挂油缸组之间的油路 10上设置有两 个入油口相对的液控单向阀 11和液控单向阀 12， 只有当液控单向阀 11和 液控单向阀 12都开启时， 上述相邻的两个悬挂油缸组之间的油路 10才能 实现导通， 以图 1和图 2中所示为例， 油路 10的 A端连通悬挂油缸组 90， B端连通悬挂油缸组 91 ; 控制阀组在气控装置的控制下动作， 需要将相邻 的悬挂油缸组 90和悬挂油缸组 91之间接通时， 气控装置驱动控制阀组开 启， 压力油液在控制阀组控制下进入液控单向阀 11和液控单向阀 12的先 导腔， 将液控单向阀 11和液控单向阀 12打开， 相邻的悬挂油缸组 90和悬 挂油缸组 91之间连通， 此时， 压力感应器 4采集的压力信息为悬挂油缸组 90和悬挂油缸组 91内部油液的第一压力值； 当相邻的悬挂油缸组 90和悬 挂油缸组 91不连通时， 气控装置驱动控制阀组关闭， 液控单向阀 11和液 控单向阀 12的先导腔内以及液控单向阀 11和液控单向阀 12之间的油液排 出， 液控单向阀 11和液控单向阀 12关闭， 进而， 悬挂油缸组 90和悬挂油 缸组 91断开， 此时， 压力传感器 4采集的压力信息为第二压力值； 控制器 根据压力传感器 4采集的第一压力值和第二压力值来判断液控单向阀 11和 液控单向阀 12的开启状态与闭合状态， 进而判断相邻的悬挂油缸组 90和 悬挂油缸组 91是否连通， 进而判断分组操作是否成功。
因此， 本发明提供的悬挂分组阀组可以对分组操作的状态进行检测， 以提高多桥悬挂系统分组操作的时安全性。
优选实施方式中， 如图 1环绕图 2所示， 控制阀组包括压力油路 6、控 制油路 5和两位三通气控阀 2; 两位三通气控阀 2的第一开口与控制油路 5 连通， 第二开口与压力油路 6—端连通， 第三开口连接回油路 3; 控制油路 5与液控单向阀 11和液控单向阀 12的先导腔连通； 同时， 气控装置 7与两 位三通气控阀 2连接， 通过气控装置的通断控制两位三通气控阀 2的开启 和关闭。
两位三通气控阀 2开启时，第一开口和第二开口接通， 即将压力油路 6 与控制油路 5连通， 压力油路 6内的压力油通过控制油路 5通入液控单向 阀 11和液控单向阀 12的先导腔内， 将液控单向阀 11和液控单向阀 12打 开， 连通悬挂油缸组 90和悬挂油缸组 91 ; 两位三通气控阀 2关闭时， 第一 开口与第三开口连通， 进而将控制油路 5与回油路 3连通， 液控单向阀 11 和液控单向阀 12的先导腔内以及液控单向阀 11和液控单向阀 12之间的油 液通过控制油路 5排出， 液控单向阀 11和液控单向阀 12关闭。
优选实施方式中， 为保证在连通悬挂油缸组 90和悬挂油缸组 91时， 压力油路内的油液压力与悬挂油缸组 90和悬挂油缸组 91 内油液的压力相 同， 优选地， 压力油路 6的另一端与第一连接端口 A或者第二连接端口 B 连通。
更优选地， 如图 2和图 3所示， 上述气控装置包括：
气控管路 7， 一端 C连接有外接气源 8， 另一端与两位三通气控阀 2连 接； 气动电磁阀 71， 设置于外接气源 8与两位三通气控阀 2之间， 且与控 制器信号连接； 气动电磁阀 71开启时， 气控装置控制两位三通气控阀 2开 启， 气动电磁阀 71关闭时， 两位三通气控阀 2关闭。
当然， 为增加液控单向阀 11和液控单向阀 12开启或关闭时的稳定性， 降低因压力油路 6 内的油液的压力变化过快对液控单向阀开启和关闭的影 口向， 优选地， 两位三通气控阀 2的第一开口与液控单向阀 11和液控单向阀 12的先导腔之间设有阻尼孔 51。
实施例二
如图 2所示， 本实施例提供了一种多桥悬挂系统， 包括至少两个悬挂 油缸组， 每相邻的两个悬挂油缸组之间的油路上具有一个通断控制系统； 其中， 通断控制系统包括：
连通在液压系统油路 10上且入油口相对的两个液控单向阀， 如图 1中 所示液控单向阀 11和液控单向阀 12，液控单向阀 11和液控单向阀 12的入 油口相对设置；
位于液控单向阀 11 的入油口和液控单向阀 12的入油口之间的油路上 的压力传感器 4，用于采集液控单向阀 11的入油口和液控单向阀 12的入油 口之间的油路内油液的压力信息；
同时控制液控单向阀 11和液控单向阀 12开启或关闭的控制阀组； 控制控制阀组开启或者闭合的气控装置；
信号连接压力传感器 4，控制气控装置动作， 并根据压力传感器 4采集 的压力信息判断液压系统油路通断的控制器 （图中未示出）。
为便于描述， 以图 2中所示悬挂油缸组 90和悬挂油缸组 91、 以及两者 之间的悬挂分组阀组形成的单组悬挂回路为例对悬挂分组阀组的原理进行 描述； 悬挂油缸组 90和悬挂油缸组 91之间的油路 10上设置有两个入油口 相对的液控单向阀 11和液控单向阀 12， 只有当液控单向阀 11和液控单向 阀 12都开启时， 上述相邻的两个悬挂油缸组之间的油路 10才能实现导通， 以图 1和图 2中所示为例，油路 10的 A端连通悬挂油缸组 90， B端连通悬 挂油缸组 91 ; 控制阀组在气控装置的控制下动作， 需要将相邻的悬挂油缸 组 90和悬挂油缸组 91之间接通时， 气控装置驱动控制阀组开启， 压力油 液在控制阀组控制下进入液控单向阀 11和液控单向阀 12的先导腔， 将液 控单向阀 11和液控单向阀 12打开，相邻的悬挂油缸组 90和悬挂油缸组 91 之间连通， 此时， 压力感应器 4采集的压力信息为悬挂油缸组 90和悬挂油 缸组 91内部油液的第一压力值； 当相邻的悬挂油缸组 90和悬挂油缸组 91 不连通时， 气控装置驱动控制阀组关闭， 液控单向阀 11 和液控单向阀 12 的先导腔内以及液控单向阀 11和液控单向阀 12之间的油液排出， 液控单 向阀 11和液控单向阀 12关闭， 进而， 悬挂油缸组 90和悬挂油缸组 91断 开， 此时， 压力传感器 4采集的压力信息为第二压力值； 控制器根据压力 传感器 4采集的第一压力值和第二压力值来判断液控单向阀 11和液控单向 阀 12的开启状态与闭合状态， 进而判断相邻的悬挂油缸组 90和悬挂油缸 组 91是否连通， 进而判断分组操作是否成功。 因此， 本发明提供的悬挂分 组阀组可以对分组操作的状态进行检测， 以提高多桥悬挂系统分组操作的 时安全性。
当然， 上述悬挂系统中的悬挂回路可以有更多组， 为了简化描述， 只 列出共 3组的悬挂回路， 如图 3所示， 悬挂油缸组 92和悬挂油缸组 93相 邻， 两者之间具有悬挂分组阀组 D, 而悬挂油缸组 93与悬挂油缸组 94相 邻， 两者之间具有悬挂分组阀组 E; 当悬挂分组阀组 D开启而悬挂分组阀 组 E关闭时， 悬挂油缸组 92和悬挂油缸组 93连通形成一组， 而悬挂油缸 组 94自成一组； 当悬挂分组阀组 D关闭而悬挂分组阀组 E开启时，悬挂油 缸组 93与悬挂油缸组 94连通形成一组， 而悬挂油缸组 92自成一组； 而当 悬挂分组阀组 D和悬挂分组阀组 E均关闭时， 悬挂油缸组 92、 悬挂油缸组 93以及悬挂油缸组 94各自成一组； 而悬挂油缸组 92、 悬挂油缸组 93以及 悬挂油缸组 94 的具体分组情况均可以通过悬挂分组阀组 D的压力传感器 41采集压力信息、悬挂分组阀组 E的压力传感器 42采集压力信息，并通过 控制器对这两组信息进行判断得出， 从而对悬挂油缸组 92、 悬挂油缸组 93 以及悬挂油缸组 94三者之间的状态进行检测， 进而保证悬挂油缸组 92、悬 挂油缸组 93 以及悬挂油缸组 94三者之间分组操作时的安全性。 当然， 悬 挂油缸组为更多组时的原理与上述原理相同， 这里不再赘述。
优选地， 上述多组悬挂油缸组之间的悬挂分组阀组的压力传感器可以 共用一套控制器， 可以简化悬挂系统的结构。
与上述实施例一的优选实施方式同理：
优选地， 如图 2所示， 控制阀组包括压力油路 6、控制油路 5和两位三 通气控阀 2; 两位三通气控阀 2的第一开口与控制油路 5连通， 第二开口与 压力油路 6—端连通， 第三开口连接回油路 3; 控制油路 5与液控单向阀 11和液控单向阀 12的先导腔连通； 同时， 气控装置 7与两位三通气控阀 2 连接， 通过气控装置的通断控制两位三通气控阀 2的开启和关闭。
两位三通气控阀 2开启时， 第一开口和第二开口接通， 即将压力油路 6 与控制油路 5连通， 压力油路 6内的压力油通过控制油路 5通入液控单向 阀 11和液控单向阀 12的先导腔内， 将液控单向阀 11和液控单向阀 12打 开， 连通悬挂油缸组 90和悬挂油缸组 91 ; 两位三通气控阀 2关闭时， 第一 开口与第三开口连通， 进而将控制油路 5与回油路 3连通， 液控单向阀 11 和液控单向阀 12的先导腔内以及液控单向阀 11和液控单向阀 12之间的油 液通过控制油路 5排出， 液控单向阀 11和液控单向阀 12关闭。
优选实施方式中， 为保证在连通悬挂油缸组 90和悬挂油缸组 91时， 压力油路内的油液压力与悬挂油缸组 90和悬挂油缸组 91 内油液的压力相 同， 优选地， 压力油路 6的另一端与第一连接端口 A或者第二连接端口 B 连通。
更优选地， 如图 2和图 3所示， 上述气控装置包括：
气控管路 7， 一端 C连接有外接气源 8， 另一端与两位三通气控阀 2连 接；
气动电磁阀 71， 设置于外接气源 8与两位三通气控阀 2之间， 且与控 制器信号连接； 气动电磁阀 71开启时， 气控装置控制两位三通气控阀 2开 启， 气动电磁阀 71关闭时， 两位三通气控阀 2关闭。
优选地， 上述外接气源 8为高压气储气罐。 当然， 上述各个悬挂分组 阀组中的气控装置 7可以共用一个外接气源 8， 如图 3所示。
优选地， 两位三通气控阀 2的第一开口与液控单向阀 11和液控单向阀 12的先导腔之间设有阻尼孔 51。
优选实施方式中， 上述悬挂系统还包括：
接收操作开关信号、 并将信号传输给控制器的开关信号接收装置 （图 中未示出）；
采集工况信号、 并将工况信号传输给控制器的工况检测装置 （图中未 示出）；
控制器根据开关信号接收装置的开关信号， 或者工况检测装置的工况 信号控制气动电磁阀 71的开启或者关闭。 如此， 悬挂系统不仅可以根据操 作者的具体操作来进行分组工作， 在不需要操作者操作的工况下， 悬挂系 统还可以根据具体工况进行自动分组调节， 提高了悬挂系统的自调节能力。
实施例三
如图 4所示， 本实施例提供了一种多桥悬挂系统的检测方法， 包括： 步骤 S401 : 信号采集， 每一个悬挂分组阀组中通过压力传感器采集两 液控单向阀之间管路中油液的压力信息， 并将压力信息传输给控制器； 步骤 S402: 信号判断， 控制器对每一个压力传感器采集的压力信息进 行判断， 当至少一个压力传感器的压力信息出现异常时， 判断分组操作出 现故障， 终止分组操作； 当所有压力传感器的压力信息正常时， 判断分组 操作成功。
根据本发明提供的检测方法可以对悬挂系统分组操作中各个悬挂油缸 组之间的分组状态进行检测， 提高了分组操作的安全性。
具体的， 步骤 S402信号判断中：
控制器将每一个压力传感器采集的压力信息与一个标准压力值进行比 较， 然后将比较结果与各个压力信息与标准压力值之间的正常结果进行对 比， 当至少一个压力信息的比较结果与正常结果不符时， 判断分组操作出 现故障， 终止分组操作； 当所有压力信息的比较结果与其正常结果都相符 时， 判断分组操作成功。
显然， 本领域的技术人员可以对本发明实施例进行各种改动和变型而 不脱离本发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本 发明权利要求及其等同技术的范围之内， 则本发明也意图包含这些改动和 变型在内。

Claims

权利要求
1、 一种液压系统油路的通断控制系统， 其特征在于， 包括： 连通在所述液压系统油路上且入油口相对的两个液控单向阀； 位于两所述液控单向阀入油口之间的油路上的压力传感器， 用于采集 两所述液控单向阀的入油口之间管路内油液的压力信息；
同时控制两所述液控单向阀开启或关闭的控制阀组；
控制所述控制阀组开启或者闭合的气控装置；
信号连接所述压力传感器， 控制所述气控装置动作， 并根据所述压力 传感器采集的压力信息判断所述液压系统油路通断的控制器。
2、 根据权利要求 1所述的悬挂分组阀组， 其特征在于， 所述控制阀组 包括压力油路、 控制油路和两位三通气控阀； 所述两位三通气控阀的第一 开口与所述控制油路连通， 第二开口与压力油路一端连通， 第三开口连接 回油路； 所述两位三通气控阀开启时， 第一开口和第二开口接通， 所述两 位三通气控阀关闭时， 第一开口与第三开口连通；
所述控制油路与两所述液控单向阀的先导腔连通；
所述气控装置与所述两位三通气控阀连接， 通过气控装置的通断控制 所述两位三通气控阀的开启和关闭。
3、 根据权利要求 2所述的悬挂分组阀组， 其特征在于， 所述压力油路 的另一端与所述第一连接端口或者第二连接端口连通。
4、 根据权利要求 3所述的悬挂分组阀组， 其特征在于， 所述气控装置 包括：
气控管路， 一端连接有外接气源， 另一端与两位三通气控阀连接； 气动电磁阀， 设置于外接气源与两位三通气控阀之间， 且与所述控制 器信号连接； 所述气动电磁阀开启时， 气控装置控制所述两位三通气控阀 开启， 所述气动电磁阀关闭时， 两位三通气控阀关闭。
5、 根据权利要求 2所述的悬挂分组阀组， 其特征在于， 所述两位三通 气控阀的第一开口与两所述液控单向阀的先导腔之间设有阻尼孔。
6、 一种多桥悬挂系统， 包括至少两个悬挂油缸组， 其特征在于， 每相 邻的两个所述悬挂油缸组之间的油路上具有一个通断控制系统； 其中， 所 述通断控制系统包括：
连通在所述液压系统油路上且入油口相对的两个液控单向阀； 位于两所述液控单向阀入油口之间的油路上的压力传感器， 用于采集 两所述液控单向阀的入油口之间管路内油液的压力信息；
同时控制两所述液控单向阀开启或关闭的控制阀组；
控制所述控制阀组开启或者闭合的气控装置；
信号连接所述压力传感器， 控制所述气控装置动作， 并根据所述压力 传感器采集的压力信息判断所述液压系统油路通断的控制器。
7、 根据权利要求 6所述的悬挂系统， 其特征在于， 所述控制阀组包括 压力油路、 控制油路和两位三通气控阀； 所述两位三通气控阀的第一开口 与所述控制油路连通， 第二开口与压力油路一端连通， 第三开口连接回油 路； 所述两位三通气控阀开启时， 第一开口和第二开口接通， 所述两位三 通气控阀关闭时， 第一开口与第三开口连通；
所述控制油路与两所述液控单向阀的先导腔连通；
所述气控装置与所述两位三通气控阀连接， 通过气控装置的通断控制 所述两位三通气控阀的开启和关闭。
8、 根据权利要求 7所述的多桥悬挂系统， 其特征在于， 所述压力油路 的另一端与所述第一连接端口或者第二连接端口连通。
9、 根据权利要求 8所述的多桥悬挂系统， 其特征在于， 所述气控装置 包括：
气控管路， 一端连接有外接气源， 另一端与两位三通气控阀连接； 气动电磁阀， 设置于外接气源与两位三通气控阀之间， 且与所述控制 器信号连接； 所述气动电磁阀开启时， 气控装置控制所述两位三通气控阀 开启， 所述气动电磁阀关闭时， 两位三通气控阀关闭。
10、 根据权利要求 9所述的悬挂系统， 其特征在于， 所述外接气源为 高压气储气罐。
11、 根据权利要求 8所述的悬挂系统， 其特征在于， 所述两位三通气 控阀的第一开口与两所述液控单向阀的先导腔之间设有阻尼孔。
12、 根据权利要求 9所述的悬挂系统， 其特征在于， 还包括： 接收操作开关信号、 并将信号传输给所述控制器的开关信号接收装置; 采集工况信号、 并将工况信号传输给所述控制器的工况检测装置； 所述控制器根据开关信号接收装置的开关信号， 或者所述工况检测装 置的工况信号控制所述气动电磁阀的开启或者关闭。
13、 一种多桥悬挂系统的检测方法， 其特征在于， 包括：
信号采集， 每一个悬挂分组阀组通过压力传感器采集两液控单向阀之 间管路中油液的压力信息， 并将压力信息传输给控制器；
信号判断， 控制器对每一个压力传感器采集的压力信息进行判断， 当 至少一个压力传感器的压力信息出现异常时， 判断分组操作出现故障， 终 止分组操作； 当所有压力传感器的压力信息正常时， 判断分组操作成功。
14、 根据权利要求 13所述的检测方法， 其特征在于， 所述步骤信号判 断中：
所述控制器将每一个压力传感器采集的压力信息与一个标准压力值进 行比较， 然后将比较结果与各个压力信息与标准压力值之间的正常结果进 行对比， 当至少一个压力信息的比较结果与正常结果不符时， 判断分组操 作出现故障， 终止分组操作； 当所有压力信息的比较结果与其正常结果都 相符时， 判断分组操作成功。
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