CN114987133B - Military oil gas suspension calibration system and method based on man-machine interaction - Google Patents

Military oil gas suspension calibration system and method based on man-machine interaction Download PDF

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Publication number
CN114987133B
CN114987133B CN202210684104.3A CN202210684104A CN114987133B CN 114987133 B CN114987133 B CN 114987133B CN 202210684104 A CN202210684104 A CN 202210684104A CN 114987133 B CN114987133 B CN 114987133B
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hydro
pneumatic suspension
calibration
key
pneumatic
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CN114987133A (en
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汤鹏杰
黄朝源
李继祥
张玥
向著文
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Dongfeng Off Road Vehicle Co Ltd
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Dongfeng Off Road Vehicle Co Ltd
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    • 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
    • B60G17/0152—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 action on a particular type of suspension unit
    • 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
    • B60G17/0182—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 involving parameter estimation, e.g. observer, Kalman filter
    • 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
    • B60G17/015—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
    • B60G17/01908—Acceleration or inclination sensors
    • 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
    • B60G17/06—Characteristics of dampers, e.g. mechanical dampers
    • B60G17/08—Characteristics of fluid dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20—Type of damper
    • B60G2202/24—Fluid damper
    • 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
    • B60G2400/25—Stroke; Height; Displacement
    • B60G2400/252—Stroke; Height; Displacement vertical
    • 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
    • B60G2400/25—Stroke; Height; Displacement
    • B60G2400/256—Stroke; Height; Displacement horizontal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
    • B60G2401/90—Single sensor for two or more measurements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90—System Controller type
    • B60G2800/91—Suspension Control
    • B60G2800/912—Attitude Control; levelling control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
    • B60G2800/90—System Controller type
    • B60G2800/91—Suspension Control
    • B60G2800/914—Height Control System
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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

Abstract

The invention discloses a military oil gas suspension calibration system and method based on man-machine interaction, wherein the system comprises a power transmission system, a hydraulic control element connected with the power transmission system, a hydraulic execution element connected with the hydraulic control element, an electric control system and a sensing system connected with the electric control system; the central controller is used for selectively controlling the opening and closing of the control valve assembly, so that the hydro-pneumatic suspension cylinder selectively executes lifting movement; the height sensor component and the horizontal sensor sense and collect the height signals of the corresponding oil gas suspension cylinders and the horizontal inclination angle signals of the vehicle frame and transmit the signals to the central controller, the central controller feeds back the signals to the display screen in a data form, and the control panel is operated by judging the data value to adjust the oil gas suspension cylinders and achieve the calibration height, so that the calibration of the working height positions of all working conditions of the oil gas suspension is rapidly and accurately completed through man-machine interaction; the consistency of calibration is high, and the ground clearance height requirement of the oil-gas suspension can be ensured.

Description

Military oil gas suspension calibration system and method based on man-machine interaction
Technical Field
The invention belongs to the technical field of automobile debugging processes, and particularly relates to a military oil gas suspension calibration system and method based on man-machine interaction.
Background
The suspension system elastically links the frame with the axle for transmitting forces and moments acting between the wheels and the frame, and for buffering impact forces transmitted to the frame or the body by uneven road surfaces, and for attenuating vibrations caused thereby, so as to ensure smooth running of the vehicle; known vehicle suspensions fall into two broad categories, leaf spring suspensions and hydro-pneumatic suspensions. The elastic characteristics of the leaf spring type suspension are linear, and the requirements of high running smoothness and steering stability cannot be met. The hydro-pneumatic suspension has the rigidity-variable characteristic, so that the running smoothness of the vehicle on a common road surface can be improved, and the situation that the suspension breaks down when the vehicle runs on a large-fluctuation road surface can be prevented. For engineering vehicles working under severe road conditions and bearing conditions, the hydro-pneumatic suspension can be used for remarkably relieving impact and reducing jolt, so that the working conditions of drivers are improved and the average vehicle speed is increased.
Compared with a common vehicle, the military off-road vehicle is often driven in a severe environment, and the hydro-pneumatic suspension is a suspension system with adjustable chassis height assembled on the vehicle, and can play roles in supporting the chassis, buffering impact and jolt, improving riding comfort, improving vehicle speed and the like, and improving obstacle crossing capability and functions of the vehicle on a road surface. The initial position and the limit position of each vehicle are different after the assembly of the hydro-pneumatic suspension are finished, the hydro-pneumatic suspension needs to be adjusted to the same horizontal position for working, the hydro-pneumatic suspension is used as a newly developed product, a corresponding calibration process flow is lacked, difficulty exists in defining the high, middle and low positions of the suspension during calibration, and the memory of the system on the high, middle and low positions of the suspension is easy to fail during the calibration; the time and the specific calibration method for calibrating the horizontal dip angle are difficult to grasp; the height calibration of the suspension cylinder is difficult to unify; the nonstandard operation can cause the phenomenon that oil is not filled in the system, the high-level adjustment is not carried out, and the whole calibration efficiency is low.
Therefore, a process method for highly calibrating the oil-gas suspension, which can improve the calibration efficiency, standard operation and good consistency of calibration quality, is urgently needed, and is convenient to operate while ensuring the precision requirement.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides a military oil-gas suspension calibration system and method based on man-machine interaction, which are characterized in that a central controller is used for selectively controlling the opening and closing of a control valve assembly to selectively execute lifting movement of 6 oil cylinders of the oil-gas suspension; the height sensor component and the horizontal sensor sense and collect the height signals of the corresponding oil gas suspension cylinders and the horizontal inclination angle signals of the vehicle frame, the central controller feeds the sensed and collected signals back to the display screen in a data form, the control panel is operated to selectively adjust the oil gas suspension cylinders through judging the data value, the oil gas suspension cylinders reach the calibrated height, and the calibration of the working height positions of the oil gas suspension in each working condition is rapidly and accurately achieved through man-machine interaction; according to the height working condition position required by the vehicle, the lifting of the oil gas suspension cylinder is manually adjusted, so that the height of the chassis of the vehicle is adjusted, and the height from the ground is fed back by utilizing a height sensor and a horizontal sensor; the vehicle chassis height data is compared through actual measurement, and the obtained data is input into a control panel system to form quantized data memory; the calibration of the working height positions of all working conditions of the oil-gas suspension can be accurately and rapidly calibrated by operators; the military oil gas suspension calibration process method based on man-machine interaction provided by the invention forms a set of standard military oil gas suspension height calibration process operation, standardizes the calibration flow, reduces the operation difficulty, improves the calibration consistency, ensures the ground clearance height requirement of the oil gas suspension, has good calibration quality consistency, and can quickly identify and treat the occurrence of single-step abnormality in standard operation; the technical problem of the oil gas suspension calibration of the military cross country vehicle in the prior art can be solved.
In order to achieve the above purpose, one aspect of the present invention provides a military oil gas suspension calibration system based on man-machine interaction, which comprises a power transmission system, a hydraulic control element connected with the power transmission system, a hydraulic actuating element connected with the hydraulic control element, an electric control system and a sensing system connected with the electric control system; wherein,
The power transmission system comprises a hydraulic pump connected with the hydraulic control element and a hydraulic oil tank connected with the hydraulic pump; the hydraulic control element comprises control valve assemblies which are connected with the hydraulic pump and are symmetrically arranged at two sides of the longitudinal central axis of the vehicle; the hydraulic actuating element comprises 6 hydro-pneumatic suspension cylinders symmetrically arranged along the two sides of the longitudinal central axis of the vehicle, the upper moving point of each hydro-pneumatic suspension cylinder is connected with the vehicle frame, the bottom supporting point is connected with the triangular tire arm, the ascending and descending movement of the piston rod in each hydro-pneumatic suspension cylinder is controlled by the hydraulic control element to drive the vehicle frame to ascend and descend, and then the chassis is driven to ascend and descend, so that the adjustment of the height of the chassis is realized; the electric control system comprises a control panel, a display screen and a central controller which are in communication connection with each other; the sensing system comprises a height sensor assembly connected with the hydro-pneumatic suspension cylinder and a horizontal sensor connected with the frame; the central controller is used for selectively controlling the opening and closing of the control valve assembly, so that the 6 hydro-pneumatic suspension cylinders selectively execute lifting movement; the height sensor assembly and the horizontal sensor (55) sense and collect the height signals of the corresponding oil gas suspension cylinders and the horizontal inclination angle signals of the vehicle frame, the central controller feeds the sensed and collected signals back to the display screen in a data form, the control panel is operated to selectively adjust the oil gas suspension cylinders through judging data values, the oil gas suspension cylinders reach the calibrated height, and the calibration of the working height positions of all working conditions of the oil gas suspension is rapidly and accurately achieved through man-machine interaction.
Further, the control panel is provided with an automatic mode selection key, a manual mode selection key, a low-level function key, a middle-level function key, a high-level function key, a leveling function key, a self-defining key, a rigid locking key and a rigid locking key indicator lamp;
The manual mode selection key can switch the hydro-pneumatic suspension system to a manual mode, and can enable a leveling function key and a custom key of the hydro-pneumatic suspension system to be in an effective state; so as to realize manual adjustment of the position of the hydro-pneumatic suspension cylinder;
The automatic mode selection key can enable a low-level functional key, a middle-level functional key, a high-level functional key and a custom key of the oil-gas suspension system to be in an effective state;
The low-level functional key can enable the hydro-pneumatic suspension system to be low-level according to the completed low-level memory data; the middle position function key can enable the hydro-pneumatic suspension system to be classified into the middle position according to the completed middle position memory data; the high-position functional key can enable the hydro-pneumatic suspension system to be in a high position according to the completed high-position memory data;
The automatic mode selection key can invalidate the rigid locking key and can not realize the locking function; in a non-automatic mode state, a rigid locking key is pressed, a rigid locking key indicator lamp is lightened, and the hydro-pneumatic suspension system is controlled to realize rigid locking of the hydro-pneumatic suspension system; then pressing a rigid locking key, extinguishing the rigid locking key indicator lamp, and releasing the rigid locking of the oil-gas suspension system;
the leveling function key can automatically adjust the vehicle from an inclined state to a horizontal state;
the custom key can realize the memory function of calibration data when the custom key is continuously pressed for more than 5 seconds for three times;
the display screen can display data fed back by the sensing system and relief valve pressure data.
Further, the control valve assembly comprises a main control valve, a first control valve, a second control valve, a third control valve and a fourth control valve, wherein the main control valve is respectively connected with the hydraulic pump, and the first control valve, the second control valve, the third control valve and the fourth control valve are respectively connected with the main control valve; an overflow valve is integrated in the main control valve;
The 6 hydro-pneumatic suspension cylinders are respectively a first hydro-pneumatic suspension cylinder connected with the first control valve, a second hydro-pneumatic suspension cylinder connected with the second control valve, a third hydro-pneumatic suspension cylinder connected with the third control valve, a fifth hydro-pneumatic suspension cylinder, a fourth hydro-pneumatic suspension cylinder connected with the fourth control valve and a sixth hydro-pneumatic suspension cylinder; the first hydro-pneumatic suspension cylinder and the second hydro-pneumatic suspension cylinder are symmetrically arranged on the left side and the right side of the longitudinal central axis of the vehicle; the third hydro-pneumatic suspension cylinder and the fourth hydro-pneumatic suspension cylinder are symmetrically arranged at the left side and the right side of the longitudinal central axis of the vehicle; the fifth hydro-pneumatic suspension cylinder and the sixth hydro-pneumatic suspension cylinder are symmetrically arranged on the left side and the right side of the longitudinal central axis of the vehicle; the first hydro-pneumatic suspension cylinder and the second hydro-pneumatic suspension cylinder are positioned at the front axle of the vehicle and respectively and independently drive the chassis; the third hydro-pneumatic suspension cylinder and the fourth hydro-pneumatic suspension cylinder are positioned at a middle axle of the vehicle; the fifth hydro-pneumatic suspension cylinder and the sixth hydro-pneumatic suspension cylinder are positioned at the rear axle of the vehicle; the third hydro-pneumatic suspension cylinder and the fifth hydro-pneumatic suspension cylinder are communicated and synchronously drive the chassis; the fourth hydro-pneumatic suspension cylinder is communicated with the sixth hydro-pneumatic suspension cylinder and synchronously drives the chassis;
The height sensor assembly comprises a first height sensor connected with the first hydro-pneumatic suspension cylinder, a second height sensor connected with the second hydro-pneumatic suspension cylinder, a third height sensor connected with the third hydro-pneumatic suspension cylinder and the fifth hydro-pneumatic suspension cylinder, a fourth height sensor connected with the fourth hydro-pneumatic suspension cylinder and the sixth hydro-pneumatic suspension cylinder, and a level sensor connected with the frame.
The invention provides a military oil gas suspension calibration process method based on man-machine interaction, which comprises the following steps:
S1: starting to electrify and refuel the hydro-pneumatic suspension system, checking and confirming that the manual valve is in a closed state, lifting a hydro-pneumatic suspension cylinder of the hydro-pneumatic suspension system to the highest position, and filling hydraulic lifting oil to the scale line position of the oil tank observation window of 2.5-3;
s2: exhausting the hydraulic oil inlet and outlet pipe of the hydro-pneumatic suspension system, descending all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system to the lowest position, ascending to the highest position, repeating for 5-7 times, and exhausting air in the hydraulic oil inlet and outlet pipe of the hydro-pneumatic suspension system;
S3: respectively carrying out low-position calibration, high-position calibration and median calibration on the oil-gas suspension system, memorizing the low-position calibration data, the high-position calibration data and the median calibration data, and then verifying the memorized low-position calibration data, high-position calibration data and median calibration data until the requirements are met;
s4: selecting an automatic mode to verify the time from the low level to the middle level of the hydro-pneumatic suspension system;
S5: the power supply of the control panel of the hydro-pneumatic suspension system is disconnected for 1 minute, so that the hydro-pneumatic suspension system memorizes calibration data and is restarted and updated;
s6: starting a power supply of the oil gas suspension system, switching to a manual mode, and calibrating a horizontal dip angle;
S7: verifying and confirming the rigidity locking function, the overflow valve pressure and the hydraulic oil level of the oil-gas suspension system;
s8: and (5) disconnecting the power supply of the control panel of the hydro-pneumatic suspension system for 1 minute, and completing calibration.
Further, the step S3 further includes the following steps:
s31, carrying out low-position calibration on the hydro-pneumatic suspension system, selecting a manual mode, reducing all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system to the lowest position, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground, checking whether the hydro-pneumatic suspension cylinders meet the requirements, if not, selecting hydro-pneumatic suspension cylinders to be adjusted to adjust the height position of the hydro-pneumatic suspension cylinders, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground again, continuously and repeatedly adjusting until the hydro-pneumatic suspension cylinders meet the requirements, continuously pressing a custom button for more than 5 seconds for three times, and memorizing low-position calibration data of the hydro-pneumatic suspension system;
S32, carrying out high-level calibration on the hydro-pneumatic suspension system, selecting a manual mode, lifting all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system to the highest position, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground, checking whether the hydro-pneumatic suspension cylinders meet the requirements, if not, selecting the hydro-pneumatic suspension cylinders to be adjusted to adjust the high-low position of the hydro-pneumatic suspension cylinders, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground again, continuously and repeatedly adjusting until the distance meets the requirements, continuously pressing the custom key for more than 5 seconds for three times, and memorizing the high-level calibration data of the hydro-pneumatic suspension system;
S33, performing median calibration on the hydro-pneumatic suspension system, selecting a manual mode, lowering all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system to the middle position, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground, checking whether the hydro-pneumatic suspension cylinders meet the requirements, if not, selecting hydro-pneumatic suspension cylinders to be adjusted to adjust the height position of the hydro-pneumatic suspension cylinders, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground again, continuously and repeatedly adjusting until the distance meets the requirements, continuously pressing a custom button for more than 5 seconds for three times, and memorizing median calibration data of the hydro-pneumatic suspension system;
S34: selecting an automatic mode, and sequentially performing memory data verification on the high-position calibration data of the hydro-pneumatic suspension system obtained in the step S32, the middle-position calibration data of the hydro-pneumatic suspension system obtained in the step S33 and the low-position calibration data of the hydro-pneumatic suspension system obtained in the step S31; the method comprises the steps of sequentially selecting a high-order function key, a middle-order function key and a low-order function key which finish memorizing data respectively, executing a command, measuring the distances between a front axle and a rear axle lower beam and the ground when the oil gas suspension system is in a high-order position, a middle-order position and a low-order position respectively, checking whether the distances are in accordance with the requirements, if any one of the distances is not in accordance with the requirements, selecting the corresponding calibration items in the steps S31-S33 to recalibrate, memorizing recalibration data, and then repeating the step S34 to verify the memorized recalibration data until the calibration data are in accordance with the requirements.
Further, step S4 further includes: and under the automatic mode, firstly selecting a low-level function key of the oil-gas suspension system and executing, then selecting a middle-level function key to start and execute, simultaneously using a stopwatch to record the time for switching the low-level function to the middle-level function, taking the fact that the low-level function key lamp is turned off to the middle-level function key lamp as a reference to confirm whether the requirement is met or not, otherwise, adjusting the flow of the overflow valve, verifying again, and repeating operation adjustment until the requirement is met.
Further, step S6 further includes: selecting a leveling function key on a control panel, lifting three oil gas suspension cylinders on one side of a longitudinal central axis of the vehicle to a high position, lowering the three oil gas suspension cylinders on the other side of the longitudinal central axis of the vehicle to a low position, continuously pressing a user-defined key for more than 5 seconds for three times, automatically calibrating an oil gas suspension system, acquiring leveling data, recording the time when the calibration of a horizontal dip angle is completed, and confirming whether the calibration meets the requirement or not, otherwise, adjusting the flow of an overflow valve, and verifying again until the calibration meets the requirement.
Further, the rigid locking function verification of step S7 includes: selecting an automatic mode to verify the rigidity locking function of the hydro-pneumatic suspension system; in the automatic mode, the pressing of the rigid locking key is invalid and the locking function cannot be realized; in other states, a rigid locking key is pressed, a key work indicator lamp is on, and the control system realizes rigid locking of the oil-gas suspension system; and then pressing a rigid locking button, extinguishing a button work indicator lamp, and releasing the rigid locking of the oil-gas suspension system, otherwise, performing fault investigation.
Further, the relief valve pressure verification of step S7 includes: and adjusting all the oil gas suspension cylinders of the oil gas suspension system to a middle position or a high position state, reading pressure data of the overflow valve in a display screen, confirming whether the oil gas suspension cylinders meet the requirements, and performing fault investigation if the oil gas suspension cylinders do not meet the requirements.
Further, the hydraulic oil level final verification of step S7 includes: and (3) observing a hydraulic oil tank liquid level indicator, wherein when the oil-gas suspension cylinder is at a high position, the liquid level of a liquid level indicator observation window is at a reading level of 2.5-3, otherwise, filling hydraulic oil to a required range.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
(1) According to the military oil gas suspension calibration system based on man-machine interaction, the central controller is used for selectively controlling the opening and closing of the control valve assembly, so that 6 oil gas suspension cylinders selectively execute lifting movement; the height sensor assembly and the horizontal sensor sense and collect the height signals of the corresponding oil gas suspension cylinders and the horizontal inclination angle signals of the vehicle frame, the central controller feeds the sensed and collected signals back to the display screen in a data form, the control panel is operated to selectively adjust the oil gas suspension cylinders through judging data values, the oil gas suspension cylinders reach the calibrated height, and the calibration of the working height positions of the oil gas suspension is rapidly and accurately achieved through man-machine interaction.
(2) The invention relates to a military hydro-pneumatic suspension calibration process method based on man-machine interaction, which comprises the steps of firstly electrifying and oiling a hydro-pneumatic suspension system; then exhausting the pipeline of the hydro-pneumatic suspension system; respectively carrying out low-position calibration, high-position calibration and middle-position calibration on the oil-gas suspension system, memorizing the low-position calibration data, the high-position calibration data and the middle-position calibration data, and then verifying the memorized low-position calibration data, high-position calibration data and middle-position calibration data until the requirements are met; selecting an automatic mode to verify the time from the low level to the middle level; the power supply of the control panel of the hydro-pneumatic suspension system is disconnected for 1 minute, so that the hydro-pneumatic suspension system memorizes calibration data and is restarted and updated; then starting a power supply of the hydro-pneumatic suspension system, switching to a manual mode, and calibrating a horizontal dip angle; then verifying and confirming the rigidity locking function, the overflow valve pressure and the hydraulic oil level of the hydro-pneumatic suspension system; finally, the power supply of the control panel of the hydro-pneumatic suspension system is disconnected for 1 minute, and the calibration is completed; according to the height working condition position required by the vehicle, the lifting of the oil gas suspension cylinder is manually adjusted, so that the height of the chassis of the vehicle is adjusted, and the height from the ground is fed back by utilizing a height sensor and a horizontal sensor; the vehicle chassis height data is compared through actual measurement, and the obtained data is input into a control panel system to form quantized data memory; the calibration of the working height positions of all working conditions of the oil-gas suspension can be accurately and rapidly calibrated by operators; the military oil gas suspension calibration process method based on man-machine interaction provided by the invention forms a set of standard military oil gas suspension height calibration process operation, standardizes the calibration flow, reduces the operation difficulty, improves the calibration consistency, ensures the ground clearance height requirement of the oil gas suspension, has good calibration quality consistency, and can quickly identify and treat the occurrence of single-step abnormality in standard operation; the technical problem of the prior art of oil gas suspension calibration can be solved.
(3) According to the military hydro-pneumatic suspension calibration process method based on man-machine interaction, the hydro-pneumatic suspension system is lowered to the lowest position when being subjected to low-level calibration, the hydro-pneumatic suspension system is raised to the highest position when being subjected to high-level calibration, the hydro-pneumatic suspension system is lowered to the middle position when being subjected to medium-level calibration, whether the hydro-pneumatic suspension system meets the requirements or not is checked by measuring the distance between a front axle and a lower beam of a rear axle and the ground, if the hydro-pneumatic suspension is not met, the suspension to be adjusted is selected to adjust the high-low position of the hydro-pneumatic suspension in a inching mode, the distance between the front axle and the lower beam of the rear axle and the ground is measured again, repeated adjustment is continuously carried out until the requirements are met, and the low-level calibration data, the high-level calibration data and the medium-level calibration data of the hydro-pneumatic suspension system are completed and memorized by continuously pressing user-defined keys for three times for more than 5 seconds; standard operation, the abnormality occurring in a single step can be rapidly identified and treated; the method can solve the problems that the definition of the high, middle and low positions of the suspension is difficult when the suspension system is calibrated in the prior art, and the memory of the high, middle and low positions of the suspension is easy to fail in the calibration process.
(4) After the time for the suspension system to rise from the low position to the middle position is determined, a leveling function key is selected for rough leveling, three oil gas suspension cylinders on the right are raised to the high position, three oil gas suspension cylinders on the left are lowered to the low position, the user-defined key is continuously pressed for more than 5 seconds for three times, the oil gas suspension system automatically calibrates and acquires leveling data, the time for completing the calibration of the horizontal dip angle is recorded, whether the requirement is met or not is confirmed, otherwise, the flow of an overflow valve is adjusted, and the system is verified again until the requirement is met, and the calibration of the horizontal dip angle is completed; the method for calibrating the horizontal inclination angle is simple, and the defects that the method for calibrating the horizontal inclination angle of the oil-gas suspension system in the prior art is difficult to grasp and the method for calibrating the horizontal inclination angle of the oil-gas suspension system in the prior art is difficult to unify are overcome.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a military oil gas suspension calibration system based on man-machine interaction according to an embodiment of the invention;
FIG. 2 is a schematic diagram of the overall operation process of a military oil-gas suspension calibration process method based on man-machine interaction according to an embodiment of the invention;
FIG. 3 is a schematic flow chart of a military oil gas suspension calibration process method based on man-machine interaction according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a process for filling hydraulic lifting oil into a hydro-pneumatic suspension system based on a man-machine interaction military hydro-pneumatic suspension calibration process method according to an embodiment of the invention;
FIG. 5 is a schematic diagram of a process for calibrating, memorizing and verifying the middle position of a high-low position of a hydro-pneumatic suspension system based on a military hydro-pneumatic suspension calibration process method based on man-machine interaction in an embodiment of the invention;
FIG. 6 is a schematic flow chart of a process for calibrating horizontal inclination angle of a hydro-pneumatic suspension system based on a man-machine interaction military hydro-pneumatic suspension calibration process method according to an embodiment of the invention;
Fig. 7 is a schematic diagram of a flow chart of calibration time and function verification of a horizontal dip angle of a hydro-pneumatic suspension system based on a man-machine interaction military hydro-pneumatic suspension calibration process method according to an embodiment of the invention.
Like reference numerals denote like technical features throughout the drawings, in particular: the hydraulic control system comprises a 1-power transmission system, 11-hydraulic pumps, 12-hydraulic oil tanks, 13-hydraulic oil inlet and outlet pipelines, 2-hydraulic control elements, 21-first control valves, 22-second control valves, 23-third control valves, 24-fourth control valves, 25-master control valves, 3-hydraulic actuators, 31-first hydro-pneumatic suspension cylinders, 32-second hydro-pneumatic suspension cylinders, 33-third hydro-pneumatic suspension cylinders, 34-fourth hydro-pneumatic suspension cylinders, 35-fifth hydro-pneumatic suspension cylinders, 36-sixth hydro-pneumatic suspension cylinders, 4-electric control systems, 41-control panels, 42-display screens, 43-central control systems, 5-sensing systems, 51-first height sensors, 52-second height sensors, 53-third height sensors, 54-fourth height sensors and 55-level sensors.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1, the invention provides a military hydro-pneumatic suspension calibration system based on man-machine interaction, which is applied to 6*6 chassis systems and driven by 6 hydro-pneumatic spring cylinders, and comprises a power transmission system 1, a hydraulic control element 2 connected with the power transmission system 1, a hydraulic execution element 3 connected with the hydraulic control element 2, an electric control system 4 and a sensing system 5 connected with the electric control system 4; the power transmission system 1 includes a hydraulic pump 11 connected to the hydraulic control element 2 and a hydraulic oil tank 12 connected to the hydraulic pump 11; the hydraulic control unit 2 comprises a control valve assembly connected to the hydraulic pump 11; the hydraulic actuating element 3 comprises 6 hydro-pneumatic suspension cylinders symmetrically arranged along the longitudinal central axis of the vehicle, the upper moving point of each hydro-pneumatic suspension cylinder is connected with the frame, the bottom supporting point is connected with the triangular tire arm, the ascending and descending movement of the piston rod in each hydro-pneumatic suspension cylinder is controlled by the hydraulic control element 2 to drive the frame to ascend and descend, and then the chassis is driven to ascend and descend, so that the adjustment of the height of the chassis is realized; the electric control system 4 comprises a control panel 41, a display screen 42 and a central controller 43 which are in communication connection with each other; the control panel 41 is provided with an automatic mode selection key, a manual mode selection key, a low-level function key, a middle-level function key, a high-level function key, a leveling function key, a custom key, a rigid locking key and a rigid locking key indicator lamp; the sensing system 5 comprises a height sensor assembly connected with the hydro-pneumatic suspension cylinder and a level sensor 55 connected with the frame; the central controller 43 is used for selectively controlling the opening and closing of the control valve assembly, so that the 6 hydro-pneumatic suspension cylinders selectively execute lifting movement; the height sensor assembly and the level sensor 55 sense and collect the height signal and the horizontal inclination signal of the corresponding hydro-pneumatic suspension cylinder, the central controller 43 feeds back the sensed and collected signals to the display screen 42 in the form of data, the control panel 41 is operated to selectively adjust the hydro-pneumatic suspension cylinder by judging the data value, so that the hydro-pneumatic suspension cylinder reaches the calibrated height, and the calibration of the working height position of each working condition of the hydro-pneumatic suspension is rapidly and accurately completed through man-machine interaction.
Further, as shown in fig. 1, the hydraulic pump 11 is connected with the hydraulic oil tank 12 through a hydraulic oil inlet and outlet pipe 13; the hydraulic pump 11 is connected with a transmission power takeoff interface and is powered by a whole vehicle power system; the power transmission system 1 is connected with the control valve assembly and the oil-gas suspension cylinder through a hydraulic oil inlet and outlet pipe 13; the electric control system 4 is integrated through a chassis wire harness assembly, and the chassis wire harness is connected with wire harness branches at the hydraulic control element 2 and the sensing system 4 respectively; the hydraulic pump 11 provides pressure for the oil in the hydraulic oil tank 12 through the hydraulic oil inlet and outlet pipe 13, so that the oil can open and close the oil inlet and outlet of the oil-gas suspension cylinder through the control valve assembly, the hydraulic oil pressure of the oil-gas suspension cylinder can rise and fall, and further the piston rod in the oil-gas suspension cylinder can be forced to rise and fall;
The control panel 41 of the electric control system is arranged on a main driving instrument desk, the display screen 42 is arranged at the middle bulge part, and the central controller 43 is used for controlling the opening and closing of the hydraulic control element 2; the sensing system 4 senses and collects the height signal of the oil gas suspension cylinder and the horizontal inclination angle signal of the frame, the signals are fed back to the display screen 42 in a data form through the central controller 43, man-machine interaction is achieved, and the control panel 41 is operated to adjust the hydraulic actuating element 3 through judging the data value, so that the hydraulic actuating element reaches the calibrated height.
Further, as shown in fig. 1, the control valve assembly includes a main control valve 25 connected to the hydraulic pump 11, a first control valve 21, a second control valve 22, a third control valve 23, and a fourth control valve 24 connected to the main control valve 25, respectively; an overflow valve is integrated in the main control valve 25, and the opening degree of each control valve is controlled through the overflow valve, so that the inlet and outlet amount of hydraulic oil is controlled; the first control valve 21 and the second control valve 22 are symmetrically arranged on the left and right sides of the longitudinal central axis of the vehicle and are connected with each other through a wire harness; the third control valve 23 and the fourth control valve 24 are symmetrically arranged on the left and right sides of the longitudinal central axis of the vehicle and are connected with each other through a wire harness; the first control valve 21, the second control valve 22, the third control valve 23 and the fourth control valve 24 are respectively connected with the hydraulic pump 11 through hydraulic oil inlet and outlet pipes 13;
Further, as shown in fig. 1, the 6 hydro-pneumatic suspension cylinders are a first hydro-pneumatic suspension cylinder 31 connected to the first control valve 21, a second hydro-pneumatic suspension cylinder 32 connected to the second control valve 22, a third hydro-pneumatic suspension cylinder 33 connected to the third control valve 23, a fifth hydro-pneumatic suspension cylinder 35, and a fourth hydro-pneumatic suspension cylinder 34 and a sixth hydro-pneumatic suspension cylinder 36 connected to the fourth control valve 24, respectively; the first hydro-pneumatic suspension cylinder 31 and the second hydro-pneumatic suspension cylinder 32 are symmetrically arranged at the left and right sides of the longitudinal central axis of the vehicle; the third hydro-pneumatic suspension cylinder 33 and the fourth hydro-pneumatic suspension cylinder 34 are symmetrically arranged on the left and right sides of the longitudinal central axis of the vehicle; the fifth hydro-pneumatic suspension cylinder 35 and the sixth hydro-pneumatic suspension cylinder 36 are symmetrically arranged on the left and right sides of the longitudinal central axis of the vehicle; the first hydro-pneumatic suspension cylinder 31 and the second hydro-pneumatic suspension cylinder 32 are positioned at the front axle of the vehicle, and the first hydro-pneumatic suspension cylinder 31 and the second hydro-pneumatic suspension cylinder 32 respectively and independently drive the chassis; the third hydro-pneumatic suspension cylinder 33 and the fourth hydro-pneumatic suspension cylinder 34 are located in the middle axle of the vehicle; the fifth hydro-pneumatic suspension cylinder 35 and the sixth hydro-pneumatic suspension cylinder 36 are positioned at the rear axle of the vehicle; the third hydro-pneumatic suspension cylinder 33 and the fifth hydro-pneumatic suspension cylinder 35 are communicated and synchronously drive the chassis; the fourth hydro-pneumatic suspension cylinder 34 and the sixth hydro-pneumatic suspension cylinder 36 are communicated and synchronously drive the chassis;
Further, as shown in fig. 1, the control panel 41 is disposed on a main cab of the vehicle; the display screen 42 is arranged at the bulge part in the headstock; the central controller 43 is arranged at the middle and rear of the vehicle; the control panel 41, the display screen 42 and the central controller 43 are connected through a wire harness; the manual mode selection key can switch the hydro-pneumatic suspension system to a manual mode, and can enable a leveling function key and a custom key of the hydro-pneumatic suspension system to be in an effective state; so as to realize manual adjustment of the position of the hydro-pneumatic suspension cylinder; the automatic mode selection key can enable a low-level functional key, a middle-level functional key, a high-level functional key and a custom key of the oil-gas suspension system to be in an effective state; the low-level functional key can enable the hydro-pneumatic suspension system to be low-level according to the completed low-level memory data; the middle position function key can enable the hydro-pneumatic suspension system to be classified into the middle position according to the completed middle position memory data; the high-position functional key can enable the hydro-pneumatic suspension system to be in a high position according to the completed high-position memory data; the automatic mode selection key can invalidate the rigid locking key and can not realize the locking function; in a non-automatic mode state, a rigid locking key is pressed, a rigid locking key indicator lamp is lightened, and the hydro-pneumatic suspension system is controlled to realize rigid locking of the hydro-pneumatic suspension system; then pressing a rigid locking key, extinguishing the rigid locking key indicator lamp, and releasing the rigid locking of the oil-gas suspension system; the leveling function key can automatically adjust the vehicle from an inclined state to a horizontal state; the custom key can realize the memory function of calibration data when the custom key is continuously pressed for more than 5 seconds for three times; the display screen 42 is capable of displaying data fed back by the sensing system 5 and relief valve pressure data.
Further, as shown in FIG. 1, the sensing system 5 includes a height sensor assembly coupled to the hydro-pneumatic suspension cylinder and a level sensor 55 coupled to the frame; the height sensor assembly includes a first height sensor 51 connected to the first hydro-pneumatic suspension cylinder 31, a second height sensor 52 connected to the second hydro-pneumatic suspension cylinder 32, a third height sensor 53 connected to the third hydro-pneumatic suspension cylinder 33 and the fifth hydro-pneumatic suspension cylinder 35, and a fourth height sensor 54 connected to the fourth hydro-pneumatic suspension cylinder 34 and the sixth hydro-pneumatic suspension cylinder 36; the first height sensor 51, the second height sensor 52, the third height sensor 53, the fourth height sensor 54, and the level sensor 55 are respectively connected with the central controller 43 in a harness manner; the first height sensor 51 senses and collects the height signal of the first hydro-pneumatic suspension cylinder 31 and transmits the height signal to the central controller 43, the central controller 43 feeds back the height signal to the display screen 42 in a data form, and the control panel 41 is operated to adjust the first hydro-pneumatic suspension cylinder 31 to reach a calibrated height by judging a data value, so that man-machine interaction is realized; sensing and collecting a height signal of the second hydro-pneumatic suspension cylinder 32 through a second height sensor 52 and transmitting the height signal to the central controller 43, wherein the central controller 43 feeds back the height signal to the display screen 42 in a data form, and the control panel 41 is operated to adjust the second hydro-pneumatic suspension cylinder 32 to reach a calibrated height through judging a data value; sensing and collecting height signals of the third hydro-pneumatic suspension cylinder 33 and the fifth hydro-pneumatic suspension cylinder 35 through a third height sensor 53 and transmitting the height signals to the central controller 43, wherein the central controller 43 feeds back the height signals to the display screen 42 in a data form, and the control panel 41 is operated to adjust the heights of the third hydro-pneumatic suspension cylinder 33 and the fifth hydro-pneumatic suspension cylinder 35 through judging data values so as to achieve a calibrated height; sensing and collecting height signals of the fourth hydro-pneumatic suspension cylinder 34 and the sixth hydro-pneumatic suspension cylinder 36 through a fourth height sensor 54 and transmitting the height signals to the central controller 43, wherein the central controller 43 feeds back the height signals to the display screen 42 in a data form, and the control panel 41 is operated to adjust the heights of the fourth hydro-pneumatic suspension cylinder 34 and the sixth hydro-pneumatic suspension cylinder 36 through judging data values so as to achieve a calibrated height; the horizontal angle signals of the vehicle frame are sensed and collected through the horizontal sensor 55 and transmitted to the central controller 43, the central controller 43 feeds back the horizontal angle signals to the display screen 42 in a data form, and the control panel 41 is operated to adjust the height of the hydro-pneumatic suspension cylinders on two sides of the longitudinal central axis of the vehicle to adjust the horizontal angle of the vehicle frame through judging the data value, so that the vehicle reaches a calibration angle.
According to the working principle of the military oil gas suspension calibration system based on man-machine interaction, 4 control valves of the hydraulic control element 2 are selectively opened and closed by the central controller 43, so that 6 oil gas suspension cylinders of the hydraulic execution element 3 selectively execute lifting movement; sensing and collecting the height signals and the horizontal inclination angle signals of the corresponding oil-gas suspension oil cylinders through a horizontal sensor 55 and 4 height sensors of the sensing system 4; the central controller 43 feeds back signals to the display screen 42 in a data form to realize man-machine interaction, and the control panel 41 is operated by judging data values to selectively adjust the hydro-pneumatic suspension cylinders of the hydraulic actuator 3 to reach the calibrated height, so that the calibration of the working height positions of all working conditions of the hydro-pneumatic suspension is rapidly and accurately completed.
As shown in fig. 2-7, another aspect of the present invention provides a method for calibrating a military hydro-pneumatic suspension based on man-machine interaction, which is implemented by the hydro-pneumatic suspension system, wherein the method for calibrating a military hydro-pneumatic suspension of the present invention adjusts the height of a chassis of a vehicle by manually adjusting the lifting of a hydro-pneumatic suspension cylinder according to the height working condition position required by the vehicle, and utilizes a height sensor to feed back the ground clearance height and the horizontal angle of a horizontal sensor reaction frame; the vehicle chassis height data is compared through actual measurement, and the obtained data is input into a control panel to form quantized data memory; the calibration of the working height positions of all working conditions of the oil-gas suspension can be accurately and rapidly calibrated by operators; the method specifically comprises the following steps:
S1: starting the hydro-pneumatic suspension system to electrify and refuel the hydro-pneumatic suspension system; the method specifically comprises the steps of controlling the hydro-pneumatic suspension system to be electrified, and starting the engine by ignition; checking to confirm whether the manual valve is closed, and if not, manually closing the manual valve; lifting an oil gas suspension cylinder of an oil gas suspension system to the highest position, and filling hydraulic lifting oil to the position of 2.5-3 marking lines of a scale line of an oil tank observation window;
S2: exhausting the hydraulic oil inlet and outlet pipe of the oil-gas suspension system; the hydro-pneumatic suspension cylinder of the hydro-pneumatic suspension system is lowered to the lowest position and then raised to the highest position, and the process is repeated for 5 to 7 times, so that the air in the hydraulic oil inlet and outlet oil pipe of the hydro-pneumatic suspension system is exhausted;
S3: respectively carrying out low-position calibration, high-position calibration and median calibration on the oil-gas suspension system, and after memorizing the low-position calibration data, the high-position calibration data and the median calibration data, verifying the memorized low-position calibration data, high-position calibration data and median calibration data;
S4: selecting an automatic mode to verify the time from the low level to the middle level of the hydro-pneumatic suspension system; specifically, in an automatic mode, firstly selecting and executing a low-level function key on a control panel of the oil-gas suspension system, then selecting and starting executing a middle-level function key on the control panel, simultaneously using a stopwatch to record the time for switching the low-level function to the middle-level function, and confirming whether the requirement is met by taking the fact that a low-level function key lamp is turned off to the middle-level function key lamp as a reference, otherwise, adjusting the flow of an overflow valve, verifying again, and repeating operation adjustment until the requirement is met;
S5: the power supply of the control panel of the hydro-pneumatic suspension system is disconnected for 1 minute, so that the hydro-pneumatic suspension system memorizes calibration data and is restarted and updated;
S6: starting a power supply of the oil gas suspension system, switching to a manual mode, and calibrating a horizontal dip angle; specifically, a leveling function key on a control panel is selected to perform rough leveling, three oil gas suspension cylinders on one side of a longitudinal central axis of a vehicle are lifted to a high position, three oil gas suspension cylinders on the other side of the longitudinal central axis of the vehicle are lowered to a low position, a user-defined key is continuously pressed for more than 5 seconds for three times, an oil gas suspension system is automatically calibrated and leveling data are obtained, the time when the horizontal dip angle calibration is completed is recorded, whether the requirement is met is confirmed, otherwise, the flow of an overflow valve is adjusted, and the flow is verified again until the requirement is met;
S7: verifying and confirming the rigidity locking function, the overflow valve pressure and the hydraulic oil level of the oil-gas suspension system;
s8: and (5) disconnecting the power supply of the control panel of the hydro-pneumatic suspension system for 1 minute, and completing calibration.
Step S3 further comprises the steps of:
S31: selecting a manual mode to perform low-level calibration on the hydro-pneumatic suspension system; specifically, a manual mode is selected, all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system are lowered to the lowest position, the distance between the front axle and the lower cross beam of the rear axle and the ground is measured, whether the hydro-pneumatic suspension cylinders meet the requirements is checked, if not, the hydro-pneumatic suspension cylinders which need to be adjusted are selected to be adjusted to adjust the height positions of the hydro-pneumatic suspension cylinders, the distance between the front axle and the lower cross beam of the rear axle and the ground is measured again, the adjustment is repeated until the requirements are met, the custom key is pressed for more than 5 seconds for three times continuously, and the low-position calibration data of the hydro-pneumatic suspension system are memorized;
s32: selecting a manual mode to perform high-position calibration on the hydro-pneumatic suspension system; specifically, a manual mode is selected, all the hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system are lifted to the highest position, the distance between the front axle and the lower cross beam of the rear axle and the ground is measured, whether the hydro-pneumatic suspension cylinders meet the requirements is checked, if not, the hydro-pneumatic suspension cylinders which need to be adjusted are selected to be adjusted to adjust the height positions of the hydro-pneumatic suspension cylinders, the distance between the front axle and the lower cross beam of the rear axle and the ground is measured again, the adjustment is repeated until the requirements are met, the custom key is pressed for more than 5 seconds for three times continuously, and the high-position calibration data of the hydro-pneumatic suspension system are memorized;
s33: selecting a manual mode to perform neutral position calibration on the hydro-pneumatic suspension system; specifically, a manual mode is selected, all the hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system are lowered to the middle position, the distance between the front axle and the lower cross beam of the rear axle and the ground is measured, whether the hydro-pneumatic suspension cylinders meet the requirements is checked, if not, the hydro-pneumatic suspension cylinders which need to be adjusted are selected to adjust the height positions of the hydro-pneumatic suspension cylinders, the distance between the front axle and the lower cross beam of the rear axle and the ground is measured again, the adjustment is repeated until the requirements are met, the user-defined key is pressed for more than 5 seconds for three times continuously, and the median calibration data of the hydro-pneumatic suspension system is memorized;
s34: selecting an automatic mode, and sequentially performing memory data verification on the high-position calibration data of the hydro-pneumatic suspension system obtained in the step S32, the middle-position calibration data of the hydro-pneumatic suspension system obtained in the step S33 and the low-position calibration data of the hydro-pneumatic suspension system obtained in the step S31; specifically, respectively selecting a high-order function key, a middle-order function key and a low-order function key which finish memorizing data in sequence, executing a command, respectively measuring the distances between a front axle and a lower beam of a rear axle of an oil-gas suspension system and the ground when the oil-gas suspension system is in a high-order position, a middle-order position and a low-order position, checking whether the oil-gas suspension system meets the requirements, if any one of the oil-gas suspension system and the lower beam of the rear axle does not meet the requirements, selecting the corresponding calibration items in the steps S31-S33 for recalibration, memorizing recalibration data, and repeating the recalibration data memorized in the step S34 for verification until the calibration data meets the requirements;
step S7 further comprises the steps of:
S71: selecting an automatic mode to verify the rigidity locking function of the hydro-pneumatic suspension system; in the automatic mode, the rigid locking key is not effective to be pressed, and the locking function cannot be realized; in other states, a rigid locking key is pressed, a key work indicator lamp is on, and the control system realizes rigid locking of the oil-gas suspension system; then pressing a rigid locking key, extinguishing a key work indicator lamp, and releasing the rigid locking of the oil-gas suspension system, otherwise, performing fault investigation;
s72: verifying the pressure of the overflow valve, namely adjusting all the oil gas suspension cylinders of the oil gas suspension system to a middle or high state, reading pressure data of the overflow valve in a multifunctional display screen, and checking whether the pressure data meets the requirements or not;
S73: and finally verifying the hydraulic oil level, observing a hydraulic oil tank liquid level indicator, and when the oil-gas suspension is at a high position, the liquid level of a liquid level indicator observation window is at a reading level of 2.5-3, otherwise, filling hydraulic oil to a required range.
The invention provides a working principle of a military oil gas suspension calibration process method based on man-machine interaction, which comprises the following steps: the method comprises the steps of sequentially electrifying and oiling the hydro-pneumatic suspension system, exhausting a pipeline of the hydro-pneumatic suspension system, respectively carrying out low-level calibration, high-level calibration and median calibration on the hydro-pneumatic suspension system, memorizing low-level calibration data, high-level calibration data and median calibration data, and verifying the memorized low-level calibration data, high-level calibration data and median calibration data until the requirements are met; selecting an automatic mode to verify the time from the low level to the middle level; the power supply of the control panel of the hydro-pneumatic suspension system is disconnected for 1 minute, so that the hydro-pneumatic suspension system memorizes calibration data and is restarted and updated; then starting a power supply of the hydro-pneumatic suspension system, switching to a manual mode, and calibrating a horizontal dip angle; then verifying and confirming the rigidity locking function, the overflow valve pressure and the hydraulic oil level of the hydro-pneumatic suspension system; finally, the power supply of the control panel of the hydro-pneumatic suspension system is disconnected for 1 minute, and the calibration is completed; according to the height working condition position required by the vehicle, the lifting of the oil gas suspension cylinder is manually adjusted, so that the height of the chassis of the vehicle is adjusted, and the height from the ground is fed back by utilizing a height sensor and a horizontal sensor; the vehicle chassis height data is compared through actual measurement, and the obtained data is input into a control panel system to form quantized data memory; the calibration of the working height positions of all working conditions of the oil-gas suspension can be accurately and rapidly calibrated by operators; the military oil gas suspension calibration process method based on man-machine interaction provided by the invention forms a set of standard military oil gas suspension height calibration process operation, standardizes the calibration flow, reduces the operation difficulty, improves the calibration consistency, ensures the ground clearance height requirement of the oil gas suspension, has good calibration quality consistency, and can quickly identify and treat the occurrence of single-step abnormality in standard operation; the technical problem of the prior art of oil gas suspension calibration can be solved.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (10)

1. The military oil gas suspension calibration system based on man-machine interaction is characterized by comprising a power transmission system (1), a hydraulic control element (2) connected with the power transmission system (1), a hydraulic execution element (3) connected with the hydraulic control element (2), an electric control system (4) and a sensing system (5) connected with the electric control system (4); wherein,
The power transmission system (1) comprises a hydraulic pump (11) connected with the hydraulic control element (2) and a hydraulic oil tank (12) connected with the hydraulic pump (11); the hydraulic control element (2) comprises control valve assemblies which are connected with the hydraulic pump (11) and are symmetrically arranged at two sides of the longitudinal central axis of the vehicle; the hydraulic actuating element (3) comprises 6 hydro-pneumatic suspension cylinders symmetrically arranged along the two sides of the longitudinal central axis of the vehicle, the upper moving point of each hydro-pneumatic suspension cylinder is connected with the vehicle frame, the bottom supporting point is connected with the triangular tire arm, the ascending and descending movement of the piston rod in each hydro-pneumatic suspension cylinder is controlled by the hydraulic control element (2) to drive the vehicle frame to ascend and descend, and then the chassis is driven to ascend and descend, so that the adjustment of the height of the chassis is realized; the electric control system (4) comprises a control panel (41), a display screen (42) and a central controller (43) which are in communication connection with each other; the sensing system (5) comprises a height sensor assembly connected with the hydro-pneumatic suspension cylinder and a level sensor (55) connected with the frame; the central controller (43) is used for selectively controlling the opening and closing of the control valve assembly, so that the 6 hydro-pneumatic suspension cylinders selectively execute lifting movement; the height sensor assembly and the level sensor (55) sense and collect the height signals of the corresponding oil gas suspension cylinders and the horizontal inclination angle signals of the vehicle frame, the sensed and collected signals are fed back to the display screen (42) in a data form through the central controller (43), the control panel (41) is operated to selectively adjust the oil gas suspension cylinders through judging data values, the calibrated height is achieved, and the calibration of the working height positions of all working conditions of the oil gas suspension is rapidly and accurately achieved through man-machine interaction;
The control panel (41) is provided with an automatic mode selection key, a low-level function key, a middle-level function key, a high-level function key, a custom key, a rigid locking key and a rigid locking key indicator lamp; the automatic mode selection key can enable a low-level functional key, a middle-level functional key, a high-level functional key and a custom key of the oil-gas suspension system to be in an effective state;
The low-level functional key can enable the hydro-pneumatic suspension system to be low-level according to the completed low-level memory data; the middle position function key can enable the hydro-pneumatic suspension system to be classified into the middle position according to the completed middle position memory data; the high-position functional key can enable the hydro-pneumatic suspension system to be in a high position according to the completed high-position memory data;
The automatic mode selection key can invalidate the rigid locking key and can not realize the locking function; in a non-automatic mode state, a rigid locking key is pressed, a rigid locking key indicator lamp is lightened, and the hydro-pneumatic suspension system is controlled to realize rigid locking of the hydro-pneumatic suspension system; and then pressing the rigid locking key, extinguishing the rigid locking key indicator lamp, and releasing the rigid locking of the oil-gas suspension system.
2. The military hydro-pneumatic suspension calibration system based on man-machine interaction of claim 1, wherein: a manual mode selection key and a leveling function key are also arranged on the control panel (41);
The manual mode selection key can switch the hydro-pneumatic suspension system to a manual mode, and can enable a leveling function key and a custom key of the hydro-pneumatic suspension system to be in an effective state; so as to realize manual adjustment of the position of the hydro-pneumatic suspension cylinder;
the leveling function key can automatically adjust the vehicle from an inclined state to a horizontal state;
the custom key can realize the memory function of calibration data when the custom key is continuously pressed for more than 5 seconds for three times;
The display screen (42) can display data fed back by the sensing system (5) and relief valve pressure data.
3. The military hydro-pneumatic suspension calibration system based on man-machine interaction of claim 1, wherein: the control valve assembly comprises a main control valve (25) connected with the hydraulic pump (11) respectively, a first control valve (21), a second control valve (22), a third control valve (23) and a fourth control valve (24) connected with the main control valve (25) respectively; an overflow valve is integrated in the main control valve (25);
The 6 hydro-pneumatic suspension cylinders are respectively a first hydro-pneumatic suspension cylinder (31) connected with the first control valve (21), a second hydro-pneumatic suspension cylinder (32) connected with the second control valve (22), a third hydro-pneumatic suspension cylinder (33) connected with the third control valve (23), a fifth hydro-pneumatic suspension cylinder (35) and a fourth hydro-pneumatic suspension cylinder (34) and a sixth hydro-pneumatic suspension cylinder (36) connected with the fourth control valve (24); the first hydro-pneumatic suspension cylinder (31) and the second hydro-pneumatic suspension cylinder (32) are symmetrically arranged at the left side and the right side of the longitudinal central axis of the vehicle; the third hydro-pneumatic suspension cylinder (33) and the fourth hydro-pneumatic suspension cylinder (34) are symmetrically arranged at the left side and the right side of the longitudinal central axis of the vehicle; the fifth hydro-pneumatic suspension cylinder (35) and the sixth hydro-pneumatic suspension cylinder (36) are symmetrically arranged at the left side and the right side of the longitudinal central axis of the vehicle; the first hydro-pneumatic suspension cylinder (31) and the second hydro-pneumatic suspension cylinder (32) are positioned at the front axle of the vehicle, and the first hydro-pneumatic suspension cylinder (31) and the second hydro-pneumatic suspension cylinder (32) respectively and independently drive the chassis; the third hydro-pneumatic suspension cylinder (33) and the fourth hydro-pneumatic suspension cylinder (34) are positioned at a middle axle of the vehicle; the fifth hydro-pneumatic suspension cylinder (35) and the sixth hydro-pneumatic suspension cylinder (36) are positioned at the rear axle of the vehicle; the third hydro-pneumatic suspension cylinder (33) and the fifth hydro-pneumatic suspension cylinder (35) are communicated and synchronously drive the chassis; the fourth hydro-pneumatic suspension cylinder (34) and the sixth hydro-pneumatic suspension cylinder (36) are communicated and synchronously drive the chassis;
The height sensor assembly comprises a first height sensor (51) connected with the first hydro-pneumatic suspension cylinder (31), a second height sensor (52) connected with the second hydro-pneumatic suspension cylinder (32), a third height sensor (53) connected with the third hydro-pneumatic suspension cylinder (33) and the fifth hydro-pneumatic suspension cylinder (35), a fourth height sensor (54) connected with the fourth hydro-pneumatic suspension cylinder (34) and the sixth hydro-pneumatic suspension cylinder (36), and a level sensor (55) connected with the frame.
4. A military hydro-pneumatic suspension calibration process method based on man-machine interaction, which is characterized by being implemented by applying the military hydro-pneumatic suspension calibration system based on man-machine interaction as claimed in any one of claims 1-3, and comprising the following steps:
S1: starting to electrify and refuel the hydro-pneumatic suspension system, checking and confirming that the manual valve is in a closed state, lifting a hydro-pneumatic suspension cylinder of the hydro-pneumatic suspension system to the highest position, and filling hydraulic lifting oil to the scale line position of the oil tank observation window of 2.5-3;
s2: exhausting the hydraulic oil inlet and outlet pipe of the hydro-pneumatic suspension system, descending all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system to the lowest position, ascending to the highest position, repeating for 5-7 times, and exhausting air in the hydraulic oil inlet and outlet pipe of the hydro-pneumatic suspension system;
S3: respectively carrying out low-position calibration, high-position calibration and median calibration on the oil-gas suspension system, memorizing the low-position calibration data, the high-position calibration data and the median calibration data, and then verifying the memorized low-position calibration data, high-position calibration data and median calibration data until the requirements are met;
s4: selecting an automatic mode to verify the time from the low level to the middle level of the hydro-pneumatic suspension system;
S5: the power supply of the control panel of the hydro-pneumatic suspension system is disconnected for 1 minute, so that the hydro-pneumatic suspension system memorizes calibration data and is restarted and updated;
s6: starting a power supply of the oil gas suspension system, switching to a manual mode, and calibrating a horizontal dip angle;
S7: verifying and confirming the rigidity locking function, the overflow valve pressure and the hydraulic oil level of the oil-gas suspension system;
s8: and (5) disconnecting the power supply of the control panel of the hydro-pneumatic suspension system for 1 minute, and completing calibration.
5. The method for calibrating a military hydro-pneumatic suspension based on man-machine interaction according to claim 4, wherein the step S3 further comprises the following steps
S31, carrying out low-position calibration on the hydro-pneumatic suspension system, selecting a manual mode, reducing all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system to the lowest position, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground, checking whether the hydro-pneumatic suspension cylinders meet the requirements, if not, selecting hydro-pneumatic suspension cylinders to be adjusted to adjust the height position of the hydro-pneumatic suspension cylinders, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground again, continuously and repeatedly adjusting until the hydro-pneumatic suspension cylinders meet the requirements, continuously pressing a custom button for more than 5 seconds for three times, and memorizing low-position calibration data of the hydro-pneumatic suspension system;
S32, carrying out high-level calibration on the hydro-pneumatic suspension system, selecting a manual mode, lifting all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system to the highest position, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground, checking whether the hydro-pneumatic suspension cylinders meet the requirements, if not, selecting the hydro-pneumatic suspension cylinders to be adjusted to adjust the high-low position of the hydro-pneumatic suspension cylinders, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground again, continuously and repeatedly adjusting until the distance meets the requirements, continuously pressing the custom key for more than 5 seconds for three times, and memorizing the high-level calibration data of the hydro-pneumatic suspension system;
S33, performing median calibration on the hydro-pneumatic suspension system, selecting a manual mode, lowering all hydro-pneumatic suspension cylinders of the hydro-pneumatic suspension system to the middle position, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground, checking whether the hydro-pneumatic suspension cylinders meet the requirements, if not, selecting hydro-pneumatic suspension cylinders to be adjusted to adjust the height position of the hydro-pneumatic suspension cylinders, measuring the distance between the front axle and the lower cross beam of the rear axle and the ground again, continuously and repeatedly adjusting until the distance meets the requirements, continuously pressing a custom button for more than 5 seconds for three times, and memorizing median calibration data of the hydro-pneumatic suspension system;
S34: selecting an automatic mode, and sequentially performing memory data verification on the high-position calibration data of the hydro-pneumatic suspension system obtained in the step S32, the middle-position calibration data of the hydro-pneumatic suspension system obtained in the step S33 and the low-position calibration data of the hydro-pneumatic suspension system obtained in the step S31; the method comprises the steps of sequentially selecting a high-order function key, a middle-order function key and a low-order function key which finish memorizing data respectively, executing a command, measuring the distances between a front axle and a rear axle lower beam and the ground when the oil gas suspension system is in a high-order position, a middle-order position and a low-order position respectively, checking whether the distances are in accordance with the requirements, if any one of the distances is not in accordance with the requirements, selecting the corresponding calibration items in the steps S31-S33 to recalibrate, memorizing recalibration data, and then repeating the step S34 to verify the memorized recalibration data until the calibration data are in accordance with the requirements.
6. The method for calibrating a military hydro-pneumatic suspension based on man-machine interaction according to claim 5, wherein step S4 further comprises: and under the automatic mode, firstly selecting a low-level function key of the oil-gas suspension system and executing, then selecting a middle-level function key to start and execute, simultaneously using a stopwatch to record the time for switching the low-level function to the middle-level function, taking the fact that the low-level function key lamp is turned off to the middle-level function key lamp as a reference to confirm whether the requirement is met or not, otherwise, adjusting the flow of the overflow valve, verifying again, and repeating operation adjustment until the requirement is met.
7. The method for calibrating a military hydro-pneumatic suspension based on man-machine interaction according to claim 6, wherein step S6 further comprises: selecting a leveling function key on a control panel, lifting three oil gas suspension cylinders on one side of a longitudinal central axis of the vehicle to a high position, lowering the three oil gas suspension cylinders on the other side of the longitudinal central axis of the vehicle to a low position, continuously pressing a user-defined key for more than 5 seconds for three times, automatically calibrating an oil gas suspension system, acquiring leveling data, recording the time when the calibration of a horizontal dip angle is completed, and confirming whether the calibration meets the requirement or not, otherwise, adjusting the flow of an overflow valve, and verifying again until the calibration meets the requirement.
8. The method for calibrating a military hydro-pneumatic suspension based on man-machine interaction according to claim 7, wherein the rigid locking function verification of step S7 comprises: selecting an automatic mode to verify the rigidity locking function of the hydro-pneumatic suspension system; in the automatic mode, the pressing of the rigid locking key is invalid and the locking function cannot be realized; in other states, a rigid locking key is pressed, a key work indicator lamp is on, and the control system realizes rigid locking of the oil-gas suspension system; and then pressing a rigid locking button, extinguishing a button work indicator lamp, and releasing the rigid locking of the oil-gas suspension system, otherwise, performing fault investigation.
9. The method for calibrating a military hydro-pneumatic suspension based on human-computer interaction according to claim 8, wherein the verifying the pressure of the relief valve in step S7 comprises: and adjusting all the oil gas suspension cylinders of the oil gas suspension system to a middle position or a high position state, reading pressure data of the overflow valve in a display screen, confirming whether the oil gas suspension cylinders meet the requirements, and performing fault investigation if the oil gas suspension cylinders do not meet the requirements.
10. The method for calibrating the military oil-gas suspension based on man-machine interaction according to claim 9, wherein the final verification of the hydraulic oil level in step S7 comprises: and (3) observing a hydraulic oil tank liquid level indicator, wherein when the oil-gas suspension cylinder is at a high position, the liquid level of a liquid level indicator observation window is at a reading level of 2.5-3, otherwise, filling hydraulic oil to a required range.
CN202210684104.3A 2022-06-16 2022-06-16 Military oil gas suspension calibration system and method based on man-machine interaction Active CN114987133B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106956560A (en) * 2017-02-28 2017-07-18 北京航天发射技术研究所 A kind of chassis multi-mode Height-Adjusting System and control method
CN108248326A (en) * 2018-01-24 2018-07-06 中国石油大学(华东) A kind of cross-country chassis height intelligent regulating system of multi-axle heavy type

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2759819Y (en) * 2004-12-15 2006-02-22 中国人民解放军63983部队 Oil gas suspension control device
CN209208397U (en) * 2018-09-07 2019-08-06 陕西中航气弹簧有限责任公司 A kind of vehicle height adjusting device
CN209700331U (en) * 2018-12-28 2019-11-29 湖北航天技术研究院特种车辆技术中心 A kind of hydro pneumatic suspension height adjustment device and hydraulic control system
CN110901323B (en) * 2019-11-06 2022-05-24 江苏科技大学 Automobile body height adjusting system
CN112455175B (en) * 2020-11-27 2022-08-02 珠海格力电器股份有限公司 Method, device and system for controlling height of vehicle suspension
CN113212094B (en) * 2021-06-01 2022-05-27 山东理工大学 Leveling system and leveling method for hydro-pneumatic suspension vehicle with more than three shafts

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106956560A (en) * 2017-02-28 2017-07-18 北京航天发射技术研究所 A kind of chassis multi-mode Height-Adjusting System and control method
CN108248326A (en) * 2018-01-24 2018-07-06 中国石油大学(华东) A kind of cross-country chassis height intelligent regulating system of multi-axle heavy type

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