CN106080083B - A kind of high-clearance stand alone type vertical shaft active pneumatic suspension - Google Patents

A kind of high-clearance stand alone type vertical shaft active pneumatic suspension Download PDF

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Publication number
CN106080083B
CN106080083B CN201610680707.0A CN201610680707A CN106080083B CN 106080083 B CN106080083 B CN 106080083B CN 201610680707 A CN201610680707 A CN 201610680707A CN 106080083 B CN106080083 B CN 106080083B
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CN
China
Prior art keywords
air
air spring
support
vertical shaft
cylinder
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Expired - Fee Related
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CN201610680707.0A
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Chinese (zh)
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CN106080083A (en
Inventor
杜岳峰
陈雨
毛恩荣
朱忠祥
陈随英
李伟
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China Agricultural University
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China Agricultural University
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Publication of CN106080083A publication Critical patent/CN106080083A/en
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Publication of CN106080083B publication Critical patent/CN106080083B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/08Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
    • B60G15/12Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring and fluid damper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00Resilient 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
    • B60G17/015Resilient 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
    • B60G17/017Resilient 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 their use when the vehicle is stationary, e.g. during loading, engine start-up or switch-off
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00Resilient 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
    • B60G17/02Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/052Pneumatic spring characteristics
    • B60G17/0523Regulating distributors or valves for pneumatic springs
    • B60G17/0525Height adjusting or levelling valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00Resilient 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
    • B60G17/06Characteristics of dampers, e.g. mechanical dampers
    • B60G17/08Characteristics of fluid dampers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10Type of spring
    • B60G2202/15Fluid spring
    • B60G2202/152Pneumatic spring
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/20Type of damper
    • B60G2202/24Fluid damper
    • B60G2202/242Pneumatic damper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00Indexing codes relating to the regulated action or device
    • B60G2500/10Damping action or damper
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00Indexing codes relating to the regulated action or device
    • B60G2500/20Spring action or springs
    • B60G2500/201Air spring system type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00Indexing codes relating to the regulated action or device
    • B60G2500/30Height or ground clearance

Abstract

The present invention relates to a kind of spraying machine suspension, is related to a kind of high-clearance stand alone type vertical shaft active pneumatic suspension.The suspension includes tire assembly (1), motor (2), motor protective housing (3), steering cylinder (10), steering cylinder support arm (11), vertical shaft assembly (4), vehicle frame connection component (5), locating ring (6), operated proportional flow control valve (7), height sensor (8), auxiliary chamber (9), first sliding bearing (12), second sliding bearing (19), source of the gas assembly (13), second check valve (14), air bleeding valve (15), 3-position-3-way solenoid valve (16), pressure sensor (17) and control unit (18).The present invention can effectively absorb the shock loading that road surface passes to vehicle body, ensure the riding comfort of driver, when medicine-chest quality changes during spray drug operation, the stabilization of bodywork height can be kept, under farm work environment complicated and changeable, it can ensure the performance of vehicle tractive force.

Description

A kind of high-clearance stand alone type vertical shaft active pneumatic suspension
Technical field
It is more particularly to a kind of with damping adjustment device and height adjustment device the present invention relates to a kind of spraying machine suspension High-clearance stand alone type vertical shaft active pneumatic suspension.
Background technology
In recent years, grain and cotton crop disease and insect in China's frequently occurs, and causes crop production reduction 10% or so every year, and spray conduct Prevent the main means of pest and disease damage becomes the important measures for improving crop yield.High-clearance self-propelled spraying machine belongs to a kind of big Type, high-end agricultural equipment, it can be used for the large area, high efficiency and precisely plant of nearly all crops, especially long-stalked crops Operation is protected, so as to mitigate the labor intensity of peasant significantly, labourer is farthest protected and significantly improves economic benefit.
High-clearance self-propelled spraying machine is because of its unique work characteristics so that it must be equipped with special suspension system to delay Write-downs is shaken, and the riding comfort of driver is on the one hand improved by vibration damping, is on the other hand prevented and is reduced spray boom and chatter, pendulum occurs Dynamic and rotation, maintains it in constant height, so as to make spray more uniform and reduce drift.Spraying machine is in operation process In, spring carried mass changes with the change of medicine-chest Chinese medicine dose, it is desirable to which suspension can adapt to the change of spring carried mass, ensure vehicle body The stabilization of height;Simultaneously because farm work environment is complicated and changeable, suspension also needs to ensure that vehicle frame balance and vehicle tractive force play; During road driving, speed is higher, it is necessary to improve the ride performance and control stability of spraying machine by suspension.
The content of the invention
For above-mentioned technical problem, the present invention provides a kind of high-clearance with damping adjusting and height adjustment device is only Vertical vertical shaft active pneumatic suspension, the suspension can effectively absorb the shock loading that road surface passes to vehicle body, ensure driver's Riding comfort, when medicine-chest quality changes during spray drug operation, can keep the stabilization of bodywork height, more in complexity Under the farm work environment of change, it can ensure the performance of vehicle tractive force.
To achieve these goals, the present invention provides following technical solution:
The present invention provides a kind of high-clearance stand alone type vertical shaft active pneumatic suspension, including tire assembly 1, motor 2, motor are protected Protective case body 3, steering cylinder 10 and steering cylinder support arm 11;
The suspension further comprises vertical shaft assembly 4, vehicle frame connection component 5, locating ring 6, operated proportional flow control valve 7, height Spend sensor 8, auxiliary chamber 9, the first sliding bearing 12, the second sliding bearing 19, source of the gas assembly 13, the second check valve 14, row Air valve 15,3-position-3-way solenoid valve 16, pressure sensor 17 and control unit 18;
The vehicle frame connection component 5 includes cross beam support cylinder 501, crossbeam 505, cross beam support plate 507 and turns to support Arm mounting rail 504;
One end of the crossbeam 505 is provided with support cylinder coupling hole 510, and the other end is connected with vehicle frame;
The cross beam support cylinder 501 is hollow cylindrical tube, its pass through crossbeam 505 support cylinder coupling hole 510, and with Crossbeam 505 is fixedly connected;The top of cross beam support cylinder 501 is connected with circular ring shape cross beam support plate 507, in the branch of crossbeam 505 The one end for holding round column coupling hole 510 is connected with steering support arm mounting rail 504;
The vertical shaft assembly 4 includes vertical shaft 401, steering arm installing plate 403, air spring guiding axis 404, air spring 405th, air spring top support plate 406 and air spring bottom support plate 407;
401 top of vertical shaft passes through 403 center of steering arm installing plate, and is pacified by the first sliding bearing 12 with steering arm Loading board 403 is formed and is slidably connected;The middle part of vertical shaft 401 is passed through from cross beam support cylinder 501, and by being arranged at crossbeam branch The second sliding bearing 19 inside column 501 is held round to be slidably connected with the composition of cross beam support cylinder 501;The bottom of vertical shaft 401 is affixed In the upper surface of motor protective housing 3;
The bottom and top of the air spring 405 are connected with air spring bottom support plate 407 and air spring respectively Top support plate 406;The air spring bottom support plate 407 is fixed in the top of vertical shaft 401;Two air spring guiding axis 404 are symmetrically arranged at 405 both sides of air spring;Air spring guiding axis 404 passes perpendicularly through air spring bottom support plate 407, and the upper and lower ends of air spring guiding axis 404 respectively with air spring top support plate 406 and steering arm installing plate 403 is affixed;
The locating ring 6 is fixedly connected with steering arm installing plate 403;Cross beam support plate 507 is stuck in the inside of locating ring 6, And form and be rotatablely connected with locating ring 6;
One end of the steering cylinder support arm 11, which is fixed in, to be turned on support arm mounting rail 504, the other end and steering oil The cylinder body end rotation connection of cylinder 10;The tailpiece of the piston rod of steering cylinder 10 is rotatablely connected with steering arm installing plate 403;
The source of the gas assembly 13 includes engine 131, air compressor 132, air dryer 133, the first check valve 135 With air accumulator 136;
The engine 131, air compressor 132, air dryer 133, the first check valve 135 and air accumulator 136 Air inlet is sequentially connected;
The both ends of the height sensor 8 connect with air spring bottom support plate 407 and steering arm installing plate 403 respectively Connect;The auxiliary chamber 9 is fixed on vehicle frame;The gas port of air spring 405 respectively with auxiliary chamber 9, pressure sensor 17 and The path connection of 3-position-3-way solenoid valve 16;Operated proportional flow control valve is provided between air spring 405 and auxiliary chamber 9 7;Two other path of 3-position-3-way solenoid valve 16 is connected with the second check valve 14 and air bleeding valve 15 respectively;Second check valve 14 It is connected with the gas outlet of air accumulator 136;
Described control unit 18 respectively with operated proportional flow control valve 7, height sensor 8, pressure sensor 17 and three three Three-way electromagnetic valve 16 connects.
Multiple are provided between the hole wall of the support cylinder coupling hole 510 of the cross beam support cylinder 501 and crossbeam 505 Two floors 503;The 3rd is respectively arranged between the upper and lower surface of 505 beam body of the cross beam support cylinder 501 and crossbeam 506 and first floor 502 of floor;The cross beam support cylinder 501 with turn to 504 beam body of support arm mounting rail upper surface and under The 4th floor 508 and the 5th floor 509 are respectively arranged between surface.
Rubber damping block 402 is provided between the vertical shaft 401 and steering arm installing plate 403.
The connection of the air dryer 133 regeneration air accumulator 134.
Compared with prior art, the beneficial effects of the present invention are:
1. the shock loading that road surface passes to tire can pass to air spring by vertical shaft, by the vibration damping of air spring Vehicle body is passed to again, it is simple in structure, easy to process, and by replacing the tune of the vertical shaft of different length with can realizing spraying machine gap It is whole;Main structural components such as motor protective housing, steering arm, steering cylinder support arm, frame connecting device etc. use Welder Skill, reduces manufacture difficulty and cost;
2. air suspension uses active independent suspension structure form, enable suspension according to the different operation work of spraying machine Condition adjusts the air capacity in air spring, to reach optimal damping property;
3. by damping adjustment device, suspension damping size can be automatically adjusted according to the driving cycle of spraying machine, and then The more effective shock loading for absorbing ground and passing to vehicle body, ensures the riding comfort of driver, in addition the spirit of auxiliary chamber arrangement It is living, from the limitation in suspension frame structure and space;
4. by height adjustment device, it can make air spring all the time in working depth, from spraying machine spray process The influence of middle spring carried mass change;
5. by press feedback device, wheel can be made to adjust spring inner pressure when being absorbed in pit, and then adjust the wheel Support reaction, ensures the performance of vehicle tractive force.
Brief description of the drawings
Fig. 1 is the overall construction drawing of the high-clearance stand alone type vertical shaft active pneumatic suspension of the present invention;
Fig. 2 is the sectional view of the high-clearance stand alone type vertical shaft active pneumatic suspension of the present invention;
Fig. 3 is the structure diagram of vertical shaft assembly 4;
Fig. 4 is the structure diagram of vehicle frame connection component 5;
Fig. 5 is the decomposition texture schematic diagram of vehicle frame connection component 5;
Fig. 6 is the air-channel system figure of the present invention.
Reference numeral therein is:
1 tire assembly, 2 motor
3 motor protective housing, 4 vertical shaft assembly
401 vertical shaft, 402 rubber damping block
403 steering arm installing plate, 404 air spring guiding axis
405 air spring, 406 air spring top support plate
407 air spring bottom support plate, 5 vehicle frame connection component
501 cross beam support cylinder, 502 first floor
503 second floors 504 turn to support arm mounting rail
505 crossbeam, 506 trislab
The 4th floor of 507 cross beam support plate 508
509 the 5th floors 510 support cylinder coupling hole
6 locating ring, 7 operated proportional flow control valve
8 height sensor, 9 auxiliary chamber
10 steering cylinder, 11 steering cylinder support arm
12 first sliding bearing, 13 source of the gas assembly
131 engine, 132 air compressor
133 air dryers 134 regenerate air accumulator
135 first check valve, 136 air accumulator
14 second check valve, 15 air bleeding valve
16 3-position-3-way solenoid valve, 17 pressure sensor
18 control unit, 19 second sliding bearing
Embodiment
The present invention is further described with reference to embodiment.
As illustrated in fig. 1 and 2, high-clearance stand alone type vertical shaft active pneumatic suspension of the invention, including tire assembly 1, motor 2nd, motor protective housing 3, steering cylinder 10 and steering cylinder support arm 11.
The suspension further comprises vertical shaft assembly 4, vehicle frame connection component 5, locating ring 6, operated proportional flow control valve 7, height Spend sensor 8, auxiliary chamber 9, the first sliding bearing 12, the second sliding bearing 19, source of the gas assembly 13, the second check valve 14, row Air valve 15,3-position-3-way solenoid valve 16, pressure sensor 17 and control unit 18.
As shown in Figure 4 and Figure 5, vehicle frame connection component 5 includes cross beam support cylinder 501, crossbeam 505, cross beam support plate 507 With steering support arm mounting rail 504.
One end of the crossbeam 505 is provided with support cylinder coupling hole 510, and the other end is connected with vehicle frame.
The cross beam support cylinder 501 is hollow cylindrical tube, its pass through crossbeam 505 support cylinder coupling hole 510, and with Crossbeam 505 is fixedly connected;The top of cross beam support cylinder 501 is connected with circular ring shape cross beam support plate 507.In the branch of crossbeam 505 The one end for holding round column coupling hole 510 is connected with steering support arm mounting rail 504.
Preferably, between the lower part hole wall of the support cylinder coupling hole 510 of the cross beam support cylinder 501 and crossbeam 505 It is provided with multiple second floors 503.Divide between the upper and lower surface of 505 beam body of the cross beam support cylinder 501 and crossbeam 506 and first floor 502 of trislab is not provided with.The cross beam support cylinder 501 is with turning to 504 beam body of support arm mounting rail Upper and lower surface between be respectively arranged with the 4th floor 508 and the 5th floor 509.
As shown in figure 3, vertical shaft assembly 4 includes vertical shaft 401, steering arm installing plate 403, air spring guiding axis 404, air Spring 405, air spring top support plate 406 and air spring bottom support plate 407.
401 top of vertical shaft passes through 403 center of steering arm installing plate, and is pacified by the first sliding bearing 12 with steering arm Loading board 403 is formed and is slidably connected.The middle part of vertical shaft 401 is passed through from cross beam support cylinder 501, and by being arranged at crossbeam branch The second sliding bearing 19 inside column 501 is held round to be slidably connected with the composition of cross beam support cylinder 501;The bottom of vertical shaft 401 is affixed In the upper surface of motor protective housing 3.
Preferably, it is provided with rubber damping block 402 between the vertical shaft 401 and steering arm installing plate 403.
The bottom and top of the air spring 405 are connected with air spring bottom support plate 407 and air spring respectively Top support plate 406;The air spring bottom support plate 407 is fixed in the top of vertical shaft 401.Two air spring guiding axis 404 are symmetrically arranged at 405 both sides of air spring, ensure that air spring 405 is solely subjected to the axis along 404 axis direction of guiding axis Xiang Li.Air spring guiding axis 404 passes perpendicularly through air spring bottom support plate 407, and air spring guiding axis 404 is upper Lower both ends are affixed with air spring top support plate 406 and steering arm installing plate 403 respectively.
The locating ring 6 is fixedly connected with steering arm installing plate 403;Cross beam support plate 507 is stuck in the inside of locating ring 6, And form and be rotatablely connected with locating ring 6;
One end of the steering cylinder support arm 11, which is fixed in, to be turned on support arm mounting rail 504, the other end and steering oil The cylinder body end rotation connection of cylinder 10;The tailpiece of the piston rod of steering cylinder 10 is rotatablely connected with steering arm installing plate 403.
As shown in fig. 6, source of the gas assembly 13 includes engine 131, air compressor 132, the list of air dryer 133, first To valve 135 and air accumulator 136.
The engine 131, air compressor 132, air dryer 133, the first check valve 135 and air accumulator 136 Air inlet is sequentially connected.Preferably, the connection of the air dryer 133 regeneration air accumulator 134.
The both ends of the height sensor 8 connect with air spring bottom support plate 407 and steering arm installing plate 403 respectively Connect.The auxiliary chamber 9 is bolted on vehicle frame.The gas port of air spring 405 is passed with auxiliary chamber 9, pressure respectively Sensor 17 is connected with a path of 3-position-3-way solenoid valve 16.Proportional stream is set between air spring 405 and auxiliary chamber 9 Control valve 7.Two other path of 3-position-3-way solenoid valve 16 is connected with the second check valve 14 and air bleeding valve 15 respectively.Second Check valve 14 is connected with the gas outlet of air accumulator 136.
Described control unit 18 respectively with operated proportional flow control valve 7, height sensor 8, pressure sensor 17 and three three Three-way electromagnetic valve 16 connects.
The source of the gas assembly 13 persistently provides dry pure air for suspension system;Second check valve 14 ensures air Air will not blow back into air accumulator 136 during pressure rise after spring 405 is compressed by moment.
The air spring 405, operated proportional flow control valve 7, auxiliary chamber 9 and control unit 18 form damping and adjust dress Put.Control unit 18 controls the valve port opening of operated proportional flow control valve 7, and then controls between air spring 405 and auxiliary chamber 9 Air quality flow, adjust the damping size of suspension.
Second check valve 14, air bleeding valve 15,18 structure of 3-position-3-way solenoid valve 16, height sensor 8 and control unit Into height adjustment device.Height sensor 8 is used for detecting the height change of air spring 405;Control unit 18 is passed by height The spool displacement of the altitude signal control 3-position-3-way solenoid valve 16 for the air spring 405 that sensor 8 measures, and then control air bullet The inflation and deflation of spring 405, realize the adjustment of 405 height of air spring.
Second check valve 14, air bleeding valve 15,18 structure of 3-position-3-way solenoid valve 16, pressure sensor 17 and control unit Into press feedback device.Pressure sensor 17 is connected with the gas port of air spring 405, to detect the pressure of air spring 405 Change.The pressure signal control 3-position-3-way solenoid valve for the air spring 405 that control unit 18 is measured by pressure sensor 17 16 spool displacements, and then the inflation and deflation of air spring 405 are controlled, realize the adjustment of 405 internal pressure of air spring.
The course of work of the present invention is as follows:
Under original state, when spraying machine is with compared with low velocity or shallower road traveling, vibrated first as caused by road surface Tire assembly 1 is passed to, then motor protective housing 3 is passed to by tire assembly 1, is then passed to vertical shaft 401;Vertical shaft 401 will Motor protective housing 3 transmits the vibration come successively by air spring bottom support plate 407, air spring 405, air spring top Portion's support plate 406, air spring guiding axis 404, steering arm installing plate 403, locating ring 6, vehicle frame connection component 5, are finally transmitted To vehicle body.At this time, 7 aperture of operated proportional flow control valve is in maximum rating, and air spring 405 and auxiliary chamber 9 are in connected state State, damping value is close to 0 at this time, and suspension is mainly by the damping of air spring 405 itself and the frictional damping of rubber damping block 402 Carry out vibration damping.Spraying machine body quality does not change, and 405 height of air spring is normal work height, at this time 3-position-3-way electricity 16 spool of magnet valve is in middle position, and air accumulator 136 is off with air spring 405.The air that pressure sensor 17 measures 405 pressure of spring is also at normal fluctuation range.
During damping is adjusted, as speed increase or spraying machine drive into severe road surface, the increase of body vibrations acceleration, control Unit 18 processed adjusts rapidly the openings of sizes of operated proportional flow control valve 7 according to the size of acceleration magnitude, so as to suitably be hindered Buddhist nun's value is come the vibration that decays.The damping adjusts process and adjusts process to be fast, i.e. the aperture of operated proportional flow control valve 7 is shaken with vehicle body Move the change of acceleration magnitude and change rapidly.
In height adjustment, due to spraying machine spray or during dosing, body quality can be decreased or increased, control unit 18 can receive the altitude signal of height sensor 8, determine 16 spool position of 3-position-3-way solenoid valve, so that it is determined that vehicle body is rise Or reduce.When adding liquid to sprayer medicine case, body quality gradually increases so that and air spring 405 is gradually compressed, Height reduction, when height sensor 8 detects that the height reduction amount of air spring 405 exceeds 10mm, control unit 18 is sent Instruction, moves down 16 spool of 3-position-3-way solenoid valve, its is upper to be switched on, air by air accumulator 136 by the second check valve 14, 3-position-3-way solenoid valve 16 enters air spring 405 and auxiliary chamber 9, air spring 405 is highly increased, until air spring 405 return to elemental height, and 16 spool of 3-position-3-way solenoid valve returns to middle position, between air accumulator 136 and air spring 405 again Disconnect, there is no air to enter air spring 405 and auxiliary chamber 9;During spraying machine spray drug operation, medicine-chest quality gradually subtracts Small, air spring 405 highly increases under internal gas pressure effect, when height sensor 8 detects the height of air spring 405 When degree incrementss exceed 10mm, control unit 18 sends instruction, moves up the spool of 3-position-3-way solenoid valve 16, its bottom is connect Logical, air passes through 3-position-3-way solenoid valve 16 by air spring 405 and auxiliary chamber 9, is discharged from air bleeding valve 15, and air spring is high Degree reduces, and until air spring 405 returns to elemental height, 16 spool of 3-position-3-way solenoid valve returns to middle position, and air bleeding valve is no longer Exhaust.The height adjustment adjusts process to be slow, i.e., only works as the height increase of air spring 405 or be reduced beyond During 10mm, height sensor 8 can just send a signal to control unit 18, and then act 3-position-3-way solenoid valve 16, air bullet When the height of spring 405 is no more than 10mm, height sensor 8 will not send a signal to control unit 18,3-position-3-way solenoid valve 16 It is failure to actuate.
During pressure is adjusted, when a certain wheel of spraying machine is absorbed in pit, the air spring 405 on the wheel is drawn Stretch, pressure sensor 17 measures 405 internal pressure of air spring and decreases compared with initial pressure, and control unit 18 is to three Three-way magnetic valve 16 sends the instruction that spool moves down, and air is by air accumulator 136 by the second check valve 14,3-position-3-way solenoid valve 16 enter air spring 405 and auxiliary chamber 9, air spring 405 and 9 internal pressure of auxiliary chamber is returned to initial value, into And ensure the support reaction and driving force of the wheel, it is rolled pit away from.After rolling pit away from, air spring 405 is due to being newly filled with Gas causes its internal pressure to increase, and pressure sensor detects that the pressure ratio initial pressure of air spring 405 is big, control unit 18 send instruction, move up the spool of 3-position-3-way solenoid valve 16, its bottom is switched on, and air is by air spring 405 and adds Gas chamber 9 passes through 3-position-3-way solenoid valve 16, is discharged from air bleeding valve 15, and 405 internal pressure of air spring reduces, until air spring 405 internal pressures return to initial value, and 16 spool of 3-position-3-way solenoid valve returns to middle position, and air bleeding valve is no longer vented.Pressure is adjusted Process is to detect that 405 pressure of air spring is below in the continuous 5 second time using duration control method, i.e. pressure sensor 17 During initial pressure value, pressure sensor 17 can just send a signal to control unit 18, and then act 3-position-3-way solenoid valve 16, If 405 internal pressure of air spring returns to initial value in no more than 5 seconds, pressure sensor 17 just will not be sent a signal to Control unit 18,3-position-3-way solenoid valve 16 will not act.
For four-wheel self-propelled clearance spraying machine, the free-standing vertical shaft active pneumatic suspension should have four sets, each A set of, their shared source of the gas assemblies 13 and control unit 18 are arranged on wheel.

Claims (4)

1. a kind of high-clearance stand alone type vertical shaft active pneumatic suspension, including tire assembly (1), motor (2), motor protective housing (3), steering cylinder (10) and steering cylinder support arm (11), it is characterised in that:
The suspension further comprises vertical shaft assembly (4), vehicle frame connection component (5), locating ring (6), operated proportional flow control valve (7), height sensor (8), auxiliary chamber (9), the first sliding bearing (12), the second sliding bearing (19), source of the gas assembly (13), Second check valve (14), air bleeding valve (15), 3-position-3-way solenoid valve (16), pressure sensor (17) and control unit (18);
The vehicle frame connection component (5) includes cross beam support cylinder (501), crossbeam (505), cross beam support plate (507) and turns to Support arm mounting rail (504);
One end of the crossbeam (505) is provided with support cylinder coupling hole (510), and the other end is connected with vehicle frame;
The cross beam support cylinder (501) is hollow cylindrical tube, it passes through the support cylinder coupling hole (510) of crossbeam (505), and It is fixedly connected with crossbeam (505);The top of cross beam support cylinder (501) is connected with circular ring shape cross beam support plate (507), in crossbeam (505) one end of support cylinder coupling hole (510), which is connected with, turns to support arm mounting rail (504);
The vertical shaft assembly (4) includes vertical shaft (401), steering arm installing plate (403), air spring guiding axis (404), air bullet Spring (405), air spring top support plate (406) and air spring bottom support plate (407);
Vertical shaft (401) top passes through steering arm installing plate (403) center, and passes through the first sliding bearing (12) and steering arm Installing plate (403) is formed and is slidably connected;Passed through in the middle part of the vertical shaft (401) from cross beam support cylinder (501), and pass through setting Form and be slidably connected with cross beam support cylinder (501) in internal the second sliding bearing (19) of cross beam support cylinder (501);Vertical shaft (401) bottom is fixed in the upper surface of motor protective housing (3);
The bottom and top of the air spring (405) are connected with air spring bottom support plate (407) and air spring respectively Top support plate (406);The air spring bottom support plate (407) is fixed in the top of vertical shaft (401);Two air springs Guiding axis (404) is symmetrically arranged at air spring (405) both sides;Air spring guiding axis (404) passes perpendicularly through air spring Bottom support plate (407), and the upper and lower ends of air spring guiding axis (404) respectively with air spring top support plate (406) and steering arm installing plate (403) is affixed;
The locating ring (6) is fixedly connected with steering arm installing plate (403);Cross beam support plate (507) is stuck in the interior of locating ring (6) Portion, and form and be rotatablely connected with locating ring (6);
One end of the steering cylinder support arm (11), which is fixed in, to be turned on support arm mounting rail (504), the other end and steering oil The cylinder body end rotation connection of cylinder (10);The tailpiece of the piston rod of steering cylinder (10) is rotatablely connected with steering arm installing plate (403);
The source of the gas assembly (13) includes engine (131), air compressor (132), air dryer (133), first unidirectional Valve (135) and air accumulator (136);
The engine (131), air compressor (132), air dryer (133), the first check valve (135) and air accumulator (136) air inlet is sequentially connected;
The both ends of the height sensor (8) connect with air spring bottom support plate (407) and steering arm installing plate (403) respectively Connect;The auxiliary chamber (9) is fixed on vehicle frame;The gas port of air spring (405) respectively with auxiliary chamber (9), pressure sensing Device (17) is connected with a path of 3-position-3-way solenoid valve (16);It is provided between air spring (405) and auxiliary chamber (9) Operated proportional flow control valve (7);Two other path of 3-position-3-way solenoid valve (16) respectively with the second check valve (14) and exhaust Valve (15) connects;Second check valve (14) is connected with the gas outlet of air accumulator (136);
Described control unit (18) respectively with operated proportional flow control valve (7), height sensor (8), pressure sensor (17) and three Position-3-way solenoid valve (16) connects.
2. high-clearance stand alone type vertical shaft active pneumatic suspension according to claim 1, it is characterised in that:The cross beam support Multiple second floors (503) are provided between the hole wall of the support cylinder coupling hole (510) of cylinder (501) and crossbeam (505);Institute State and be respectively arranged with trislab (506) between the upper and lower surface of cross beam support cylinder (501) and crossbeam (505) beam body With the first floor (502);The cross beam support cylinder (501) with turn to support arm mounting rail (504) beam body upper surface and under The 4th floor (508) and the 5th floor (509) are respectively arranged between surface.
3. high-clearance stand alone type vertical shaft active pneumatic suspension according to claim 1, it is characterised in that:The vertical shaft (401) rubber damping block (402) is provided between steering arm installing plate (403).
4. high-clearance stand alone type vertical shaft active pneumatic suspension according to claim 1, it is characterised in that:It is described to be air-dried Device (133) connection regeneration air accumulator (134).
CN201610680707.0A 2016-08-17 2016-08-17 A kind of high-clearance stand alone type vertical shaft active pneumatic suspension Expired - Fee Related CN106080083B (en)

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CN107856734B (en) * 2017-10-20 2019-12-10 武汉科技大学 high-clearance hydraulic platform with adjustable platform height
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CN111546848B (en) * 2020-04-07 2021-03-16 重庆工业职业技术学院 New energy automobile suspension device

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