CN102490565B - Demand-based active anti-rollover hydraulic inline suspension system for heavy truck - Google Patents
Demand-based active anti-rollover hydraulic inline suspension system for heavy truck Download PDFInfo
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Abstract
The invention relates to a demand-based active anti-rollover hydraulic inline suspension system for a heavy truck. The system comprises an intermediate and rear axle anti-rollover hydraulic system and a demand-based active control device, wherein the intermediate and rear axle anti-rollover hydraulic system comprises a plurality of intermediate and rear axle oil cylinders supported between an intermediate and rear axle of an axle and a frame; the plurality of intermediate and rear axle oil cylinders are symmetrically arranged on left and right sides of the frame; the upper cavities of all the intermediate and rear axle oil cylinders on the left side are communicated with the lower cavities of all the intermediate and rear axle oil cylinders on the right side to form a first hydraulic oil circuit; the upper cavities of all the intermediate and rear axle oil cylinders on the right side are communicated with the lower cavities of all the intermediate and rear axle oil cylinders on the left side to form a second hydraulic oil circuit; the demand-based active control device consists of a hydraulic pump, a switching component, a detection component and a controller; and the controller ensures that a pump oil port of the hydraulic pump is communicated with one of the first hydraulic oil circuit and the second hydraulic oil circuit or is not communicated with any of the first hydraulic oil circuit and the second hydraulic oil circuit through the switching component according to a side-tipping signal detected by the detection component. The system has a simple structure, is high in reliability and applicability and low in operating cost, can effectively improve the safety of the truck, and can switch an anti-rollover function in active and passive modes.
Description
Technical field
The present invention relates generally to vehicle safety technical field, refers in particular to a kind of dynamic (dynamical) anti-rollover suspension system of vehicle chassis that relates to.
Background technology
Along with the development of express highway, road cargo long-distance transport is more and more general, and various heavy duty trucks become the main undertaker of this business.Heavy duty truck in running at high speed, if the speed of a motor vehicle is too high while turning to, adds that turn radius is too small, can cause truck rollover.In addition, the excessive vehicle generation rollover accident that also can cause of road surface leaning angle.The rollover of vehicle has become important highway transportation safety problem, with regard to its hazard rating, is the second largest traffic accident that is only second to vehicle frontal collision, therefore prevents that heavy duty truck rollover from becoming the important research content of vehicle active safety.
In the passive suspension system of conventional truck, in order to prevent that vehicle rollover from often taking the method that improves roll rate to reach, such as increasing suspension rate or Panhard rod etc. being installed.Because the raising meeting of suspension rate has a negative impact to ride comfort and road-holding property, the lateral stability of having improved vehicle has but reduced ride comfort and the road-holding property of vehicle, therefore in suspension design, there is the compromise of lateral stability and ride comfort, cannot reach both optimums simultaneously.
For avoiding the drawback of passive Anti-side-turning device, have practitioner to propose the inline suspension control system of a kind of active anti-rollover hydraulic pressure, this suspension system, according to vehicle running state, is controlled hydraulic actuating cylinder actuator by control system corresponding pressure thrust is provided, realize the adjustment of vehicle frame attitude, prevent vehicle rollover.But, because generally needing vehicle motor, the high pressure liquid force feed of hydraulic actuating cylinder drive oil pump to produce, initiatively Anti-side-turning device consumed energy is larger again, adds the factors such as cost, complexity and reliability of control system, causes the engineering application cost of active anti-rollover system higher.And traditional by the inline suspension system of hydrodynamic pressure, high to the processing request of crucial Hydraulic Elements, as high in the resistance to abrasion of element, leak tightness, durability etc. are required, engineering construction technical risk is large, thereby causes cost to increase.
In other forms of anti-rollover control system, also has a kind of technical scheme realizing by active steering and unbalanced system braking technique.When high vehicle speeds and with wide-angle, turn to, or while travelling on large leaning angle road surface, once detecting frame sides inclination angle, control system surpasses setting threshold, by control system active accommodation deflection angle size and Orientation, or vehicle is carried out to overbalance braking, acquisition prevents the expectation aligning torque of vehicle rollover, reduces frame sides degree of tilt.These modes easily allow chaufeur disorient, and cause other safety problems.
In sum, the problem that existing preventing vehicle rollover technology exists has:
1, by the anti-rollover method that increases suspension rate and Panhard rod is installed, the reduction of vehicle ride comfort may be caused, anti-rollover and the requirement that improves ride comfort two aspects cannot be met simultaneously;
2,, there is the shortcomings such as complex structure, reliability is low, energy resource consumption is large in free-standing hydraulic actuating cylinder actuator active anti-rollover control system, and in Practical Project, application cost is higher;
3, active steering or braking anti-rollover control system are except the shortcoming that exists complex structure, reliability to be difficult to guarantee, due to control system active accommodation deflection angle size and Orientation, or wheel is carried out to overbalance braking, easily cause chaufeur to disorient, be unfavorable for the control of chaufeur to vehicle;
4,, when heavy duty truck side tilt angle is larger, passive anti-rollover control system cannot provide enough balancing forces to realize the adjustment of vehicle frame attitude.In addition, if common passive anti-rollover control system exists hydraulic oil to reveal, the air pocket of generation not only causes noise, and affects anti-rolling performance;
5, the distance of heavy duty truck propons and middle back axle is long, if by directly the hydraulic actuating cylinder of propons, middle back axle suspension is inline with hydraulic oil pipe, set up anti-rollover control system, have the defects such as linear loss is large, dynamic response is slow, affect the performance of control system.
Summary of the invention
The technical problem to be solved in the present invention is: the technical matters existing for prior art, provide a kind of simple in structure, reliability is high, applicability is strong, be easy to apply, operating cost is low, can effectively improve vehicle safety, can change anti-rolling demand-based active anti-rollover hydraulic inline suspension system for heavy truck in active and passive two kinds of pattern incisions.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of demand-based active anti-rollover hydraulic inline suspension system for heavy truck, comprise middle back axle anti-rollover hydraulic efficiency pressure system, described middle back axle anti-rollover hydraulic efficiency pressure system comprises and is supported in the middle back axle of vehicle bridge and a plurality of middle back axle oil cylinder between vehicle frame, described a plurality of middle back axle oil cylinder is symmetrically arranged in the left and right sides of vehicle frame, the cavity of resorption of all middle back axle oil cylinders of the epicoele of all middle back axle oil cylinders in described left side and right side is interconnected and forms the first hydraulic circuit, the cavity of resorption of all middle back axle oil cylinders of the epicoele of all middle back axle oil cylinders in described right side and left side is interconnected and forms the second hydraulic circuit, also comprise active control device as required, described active control device as required comprises Hydraulic Pump, changeover module, be used for detecting detection components and the controller of vehicle roll degree, the pump hydraulic fluid port that the signal that described controller detects according to detection components makes Hydraulic Pump is communicated with or is not all communicated with in the first hydraulic circuit and the second hydraulic circuit one by changeover module.
As a further improvement on the present invention:
Between the propons of described vehicle bridge and vehicle frame, be provided with propons anti-rollover hydraulic efficiency pressure system, described propons anti-rollover hydraulic efficiency pressure system comprises that two are symmetry shape and are supported in respectively the propons of vehicle bridge and the propons oil cylinder between vehicle frame, the cavity of resorption of described right side propons oil cylinder is communicated with formation the 3rd hydraulic circuit with the epicoele of left side propons oil cylinder, the epicoele of described right side propons oil cylinder is communicated with formation the 4th hydraulic circuit with the cavity of resorption of left side propons oil cylinder.
Described detection components comprises two the first pressure sensors of being located at respectively on the 3rd hydraulic circuit and the 4th hydraulic circuit, and the pressure signal judgement vehicle side inclination that described controller detects according to the first pressure sensor is also controlled changeover module.
On described the first hydraulic circuit and the second hydraulic circuit, be equipped with the second pressure sensor, the pressure signal that described controller detects according to the second pressure sensor carries out oil pressure adjusting by changeover module to the first hydraulic circuit and the second hydraulic circuit.
On described the first hydraulic circuit and the second hydraulic circuit, be equipped with an auxiliary pressurize unit, described auxiliary pressurize unit comprises energy storage and by pass valve.
The oil circuit that described energy storage is communicated with hydraulic circuit is provided with dash pot valve.
Between described middle back axle oil cylinder and vehicle bridge and described middle back axle oil cylinder and vehicle frame, all by revolute, be connected.
Between described propons oil cylinder and vehicle bridge and described propons oil cylinder and vehicle frame, all by revolute, be connected.
Described changeover module is solenoid directional control valve, described solenoid directional control valve comprises an oil inlet being communicated with Hydraulic Pump pump hydraulic fluid port and two oil outlets, one in described two oil outlets is communicated with described the first hydraulic circuit, and another is communicated with described the second hydraulic circuit.
Compared with prior art, the invention has the advantages that:
1, demand-based active anti-rollover hydraulic inline suspension system for heavy truck of the present invention is by increasing active control device as required, make anti-rollover hydraulic efficiency pressure system there are initiatively anti-rollover pattern and two kinds of patterns of passive anti-rollover pattern, energy consumption and control accuracy two aspects have been taken into account, under passive anti-rollover pattern, the anti-rollover of vehicle does not need external energy input, consumption of engine power and fuel oil, be not conducive to save vehicle operating cost; Under active anti-rollover pattern, active control device, by changing the fuel feeding strategy to the first hydraulic circuit and the second hydraulic circuit, is upheld with contraction and is carried out ACTIVE CONTROL the piston rod of each oil cylinder as required, can realize large angle of roll adjustment.The present invention has easily at existing vehicle refitting and implements, be beneficial to apply, simple in structure, reliability is high, the advantage such as practical.
2, the detection components in the present invention adopts the first pressure sensor to detect and is located at the oil cylinder internal pressure between propons and vehicle frame, the magnitude difference of the pressure signal that controller detects according to two the first pressure sensors can be controlled changeover module, and then can realize the initiatively conversion of anti-rollover pattern and passive anti-rollover pattern, whole system has high precision, high dynamic response performance.
3, the present invention further arranges the second pressure sensor on the first hydraulic circuit and the second hydraulic oil, the pressure detecting in the first hydraulic circuit and the second hydraulic circuit by the second pressure sensor outputs signal to controller, controller can be controlled changeover module according to the size of pressure signal, and then can make Hydraulic Pump to the first hydraulic circuit and the second hydraulic circuit fuel feeding, realize repairing function, maintain the pressure in hydraulic circuit, guarantee that effect is adjusted in the inclination under passive mode.
4, the present invention is provided with auxiliary pressure-retaining system on each hydraulic circuit, auxiliary pressure-retaining system can compensating hydraulic cylinder rod chamber produced too much or very few hydraulic oil different from rodless cavity volume change, avoid causing vacuum to occur, guarantee that air pocket does not appear in oil circuit, and make pressure remain on a rational scope, improve stability and the reliability of whole middle back axle anti-rollover hydraulic efficiency pressure system, the pressure wave that all right buffer system of energy storage in auxiliary pressure-retaining system produces while working.
5, on the oil circuit that the present invention can the energy storage in auxiliary pressure-retaining system be communicated with corresponding hydraulic circuit, dash pot valve is set, regulate open area, make hydraulic circuit produce the dumping force of expectation, certain inclination potential energy that dissipates, there is shimmy phenomenon and play good effect in dash pot valve vehicle frame when preventing that vehicle from entering straight-line travelling by steering state simultaneously.
6, the present invention independently arranges the propons anti-rollover hydraulic efficiency pressure system between propons and vehicle frame, and is not connected with middle back axle anti-rollover hydraulic efficiency pressure system, can reduce the arrangement length of hydraulic tubing, reduces the linear loss of anti-rollover hydraulic efficiency pressure system, improves speed of response.
Accompanying drawing explanation
Fig. 1 is the hydraulic principle schematic diagram of the present invention while being applied to six-wheel vehicle.
Fig. 2 is that the present invention is installed in the structural representation on six-wheel vehicle chassis.
Marginal data:
1, vehicle bridge; 11, middle back axle; 12, propons; 2, vehicle frame; 31, middle back axle oil cylinder; 32, propons oil cylinder; 4, the first hydraulic circuit; 5, the second hydraulic circuit; 6, auxiliary pressurize unit; 61, energy storage; 62, by pass valve; 63, the second pressure sensor; 64, dash pot valve; 7, active control device as required; 71, Hydraulic Pump; 72, changeover module; 73, controller; 8, the 3rd hydraulic circuit; 9, the 4th hydraulic circuit; 10, the first pressure sensor.
The specific embodiment
Below with reference to the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 and Fig. 2 show a kind of embodiment that demand-based active anti-rollover hydraulic inline suspension system for heavy truck of the present invention is applied to six-wheel vehicle, this as required initiatively the inline suspension system of anti-rollover hydraulic pressure comprise and be located at the middle back axle 11 of vehicle bridge 1 and the middle back axle anti-rollover hydraulic efficiency pressure system between vehicle frame 2, in this, back axle anti-rollover hydraulic efficiency pressure system comprises and is supported in the middle back axle 11 of vehicle bridge 1 and four middle back axle oil cylinders 31 between vehicle frame 2, four middle back axle oil cylinders 31 are symmetrically arranged in the left and right sides of vehicle frame 2, in each, between back axle oil cylinder 31 and vehicle bridge 1 and vehicle frame 2, all by revolute, be connected, the cavity of resorption of all middle back axle oil cylinders 31 of the epicoele of all middle back axle oil cylinders 31 of vehicle left side and vehicle right side is interconnected and forms the first hydraulic circuit 4, the cavity of resorption of the epicoele of all middle back axle oil cylinders 31 in vehicle right side and all middle back axle oil cylinders 31 of vehicle left side is interconnected and forms the second hydraulic circuit 5, demand-based active anti-rollover hydraulic inline suspension system for heavy truck also comprises active control device 7 as required, active control device 7 is by Hydraulic Pump 71 as required, changeover module 72, be used for detecting detection components and controller 73 compositions of vehicle roll degree, inclination degree is the angular dimension of vehicle roll, the pump hydraulic fluid port that the signal that controller 73 detects according to detection components makes Hydraulic Pump 71 is communicated with or is not all communicated with in the first hydraulic circuit 4 and the second hydraulic circuit 5 one by changeover module 72, make middle back axle anti-rollover hydraulic efficiency pressure system there are initiatively anti-rollover and two kinds of patterns of passive anti-rollover, can be as required between two kinds of patterns by active control device 7 as required, switch, under passive anti-rollover pattern, in two hydraulic circuits, hydraulic pressure oil mass remains unchanged, the anti-rollover of vehicle does not need external energy input, can consumption of engine power and fuel oil, be conducive to save vehicle operating cost, under active anti-rollover pattern, active control device 7 is by changing the fuel feeding strategy to the first hydraulic circuit 4 and the second hydraulic circuit 5 as required, ACTIVE CONTROL is bestowed in extension and contraction to the piston rod of back axle oil cylinder 31 in each, can realize large angle of roll adjustment, energy consumption and control accuracy two aspects have been taken into account.
In the present embodiment, Hydraulic Pump 71 is connected with the first hydraulic circuit 4 and the second hydraulic circuit 5 by solenoid directional control valve; Solenoid directional control valve has three mode of operations.Under the first mode of operation, Hydraulic Pump 71 is not all to two hydraulic circuit fuel feeding, under the second mode of operation, Hydraulic Pump 71 is not to the first hydraulic circuit 4 fuel feeding and to the second hydraulic circuit 5 fuel feeding, under the 3rd mode of operation, Hydraulic Pump 71 is not to the second hydraulic circuit 5 fuel feeding and to the first hydraulic circuit 4 fuel feeding, on the first hydraulic circuit 4 and the second hydraulic circuit 5, be all provided with an auxiliary pressurize unit 6 simultaneously, auxiliary pressurize unit 6 comprises energy storage 61, by pass valve 62 and the second pressure sensor 63, the second pressure sensor 63 is for detection of the pressure of the first hydraulic circuit 4 and the second hydraulic circuit 5, and be connected with controller 73 to controller 73 input detection signals, when the pressure that the second pressure sensor 63 detects corresponding hydraulic circuit is less than setting pressure, controller 73 is controlled Hydraulic Pumps 71 and solenoid directional control valve to repairing in this hydraulic circuit, until oil pressure reaches setting value in this hydraulic circuit, can remain in the range of pressure that anti-rollover should have, because Hydraulic Pump 71 and solenoid directional control valve are only just worked to a certain extent time and carried out repairing at pressure drop, can not consume a large amount of energy.In the present embodiment, on the oil circuit that each energy storage 61 is communicated with corresponding hydraulic circuit, be also provided with dash pot valve 64, the adjustable open area of dash pot valve 64, make hydraulic circuit produce the dumping force of expectation, when work the part that can dissipate roll potential energy, when while 64 pairs of dashs pot valve prevent that vehicle from entering straight-line travelling by steering state, the shimmy phenomenon of vehicle frame 2 generation also plays good effect.
In the present embodiment, between the propons 12 of vehicle bridge 1 and vehicle frame 2, be provided with propons anti-rollover hydraulic efficiency pressure system, propons anti-rollover hydraulic efficiency pressure system comprises that two symmetry shapes are supported in the propons oil cylinder 32 of left and right vehicle wheel both sides, between propons oil cylinder 32 and vehicle bridge 1 and propons oil cylinder 32 and vehicle frame 2, all by revolute, is connected.The cavity of resorption of all propons oil cylinders 32 in vehicle right side is communicated with formation the 3rd hydraulic circuit 8 with the epicoele of all propons oil cylinders 32 in left side, the epicoele of all propons oil cylinders 32 in vehicle right side is communicated with formation the 4th hydraulic circuit 9 with the cavity of resorption of all propons oil cylinders 32 in left side, visible propons anti-rollover hydraulic efficiency pressure system only has passive anti-rolling function.
In the present embodiment, detection components comprises two the first pressure sensors 10 of being located at respectively on the 3rd hydraulic circuit 8 and the 4th hydraulic circuit 9, two the first pressure sensors 10 detect respectively the pressure in the 3rd hydraulic circuit 8 and the 4th hydraulic circuit 9, and two the first pressure sensors 10 are all connected with the controller 73 of active control device 7 as required, controller 73 is by receiving and analyze the difference of the detection signal of two the first pressure sensors 10, and then the inclination degree of judgement vehicle, when reaching back axle anti-rollover hydraulic efficiency pressure system in 73 controls of setting value Time Controller, inclination degree enters initiatively anti-rollover pattern.Detection components can also adopt other can detect the assembly of vehicle roll degree, for example directly between vehicle bridge 1 and vehicle frame 2, pressure sensor is set, pressure sensor pressure between vehicle bridge 1 and vehicle frame 2 when detecting vehicle roll changes, then exports unlike signal to controller 73.When vehicle is owing to turning to or a certain dypass face lower than opposite side time, vehicle frame 2 will roll, its center of gravity is moved to the lower lateral deviation in outside or road surface of bend, and middle back axle oil cylinder 31 and propons oil cylinder 32 between centre-of gravity shift sidecar bridge 1 and vehicle frame 2 are compressed, the Tensile of opposite side.As shown in Figure 1, when the propons oil cylinder 32 of vehicle left side is by compression and during propons oil cylinder 32 Tensile on right side, in the 3rd hydraulic circuit 8, pressure becomes large, the first pressure sensor 10 on the 3rd hydraulic circuit 8 detects its force value, and flow to controller 73, when force value reaches setting value Time Controller 73, control Hydraulic Pumps 71 and solenoid directional control valve to the first hydraulic circuit 4 fuel feeding, and then enter initiatively anti-rollover pattern; When the propons oil cylinder 32 on vehicle right side is by compression and during propons oil cylinder 32 Tensile in left side, in like manner analyze.
Principle of work:
When vehicle is during in normal smooth-ride state, vehicle's center of gravity is not offset, and initiatively the inline suspension system of anti-rollover hydraulic pressure is not worked as required, and Hydraulic Pump 71 and solenoid directional control valve be not in all to the pattern of two hydraulic circuit fuel feeding.
When the angle of roll of vehicle hour, the first pressure sensor 10 respond to and the pressure signal deficiency exported so that controller 73 sends signal controls, Hydraulic Pump 71 and solenoid directional control valve keep all not the pattern to two hydraulic circuit fuel feeding, initiatively the inline suspension system of anti-rollover hydraulic pressure works in passive anti-rollover pattern as required, under passive anti-rollover pattern, the piston of the oil cylinder of pressure side is pressed towards interior contraction, the hydraulic oil of its epicoele will be extruded by piston, because the epicoele of pressure side oil cylinder is connected with the cavity of resorption of tension side oil cylinder, the hydraulic oil being extruded enters the cavity of resorption of tension side oil cylinder, force the same inwardly contraction of piston of the oil cylinder of tension side, the trend that partial offset is stretched.Meanwhile, the hydraulic oil of tension side cylinder upper cavity oil is forced out the space increasing for supplementing pressure side oil cylinder cavity of resorption.
When the angle of roll of vehicle is larger, the first pressure sensor 10 induction pressures delivery pressure signal make controller 73 send signal control Hydraulic Pump 71 and solenoid directional control valve is converted to the pattern of the hydraulic circuit fuel feeding of corresponding pressure side, guarantee pressure side hydraulic circuit have hydraulic oil enough and that pressure is more constant adjust in back axle oil cylinder 31 piston rods extend and shrink larger displacement and reduce angle of roll, play anti-rolling effect.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonging under thinking of the present invention all belong to protection scope of the present invention.Should propose, for those skilled in the art, improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a demand-based active anti-rollover hydraulic inline suspension system for heavy truck, comprise middle back axle anti-rollover hydraulic efficiency pressure system, described middle back axle anti-rollover hydraulic efficiency pressure system comprises and is supported in the middle back axle (11) of vehicle bridge (1) and a plurality of middle back axle oil cylinder (31) between vehicle frame (2), described a plurality of middle back axle oil cylinders (31) are symmetrically arranged in the left and right sides of vehicle frame (2), the cavity of resorption of all middle back axle oil cylinders in the epicoele of all middle back axle oil cylinders in described left side (31) and right side (31) is interconnected and forms the first hydraulic circuit (4), the cavity of resorption of all middle back axle oil cylinders in the epicoele of all middle back axle oil cylinders in described right side (31) and left side (31) is interconnected and forms the second hydraulic circuit (5), it is characterized in that: also comprise active control device (7) as required, described active control device as required (7) comprises Hydraulic Pump (71), changeover module (72), be used for detecting detection components and the controller (73) of vehicle roll degree, the pump hydraulic fluid port that the signal that described controller (73) detects according to detection components makes Hydraulic Pump (71) is communicated with or is not all communicated with in the first hydraulic circuit (4) and the second hydraulic circuit (5) one by changeover module (72),
Between the propons (12) of described vehicle bridge (1) and vehicle frame (2), be provided with propons anti-rollover hydraulic efficiency pressure system, described propons anti-rollover hydraulic efficiency pressure system comprises that two are propons (12) that symmetry shape is supported in respectively vehicle bridge (1) and the propons oil cylinder (32) between vehicle frame (2), the cavity of resorption of described right side propons oil cylinder (32) is communicated with formation the 3rd hydraulic circuit (8) with the epicoele of left side propons oil cylinder (32), the epicoele of described right side propons oil cylinder (32) is communicated with formation the 4th hydraulic circuit (9) with the cavity of resorption of left side propons oil cylinder (32).
2. demand-based active anti-rollover hydraulic inline suspension system for heavy truck according to claim 1, it is characterized in that: described detection components comprises two the first pressure sensors (10) of being located at respectively on the 3rd hydraulic circuit (8) and the 4th hydraulic circuit (9), the pressure signal judgement vehicle side inclination that described controller (73) detects according to the first pressure sensor (10) is also controlled changeover module (72).
3. demand-based active anti-rollover hydraulic inline suspension system for heavy truck according to claim 1 and 2, it is characterized in that: on described the first hydraulic circuit (4) and the second hydraulic circuit (5), be equipped with the second pressure sensor (63), the pressure signal that described controller (73) detects according to the second pressure sensor (63) carries out oil pressure adjusting by changeover module (72) to the first hydraulic circuit (4) and the second hydraulic circuit (5).
4. demand-based active anti-rollover hydraulic inline suspension system for heavy truck according to claim 1 and 2, it is characterized in that: on described the first hydraulic circuit (4) and the second hydraulic circuit (5), be equipped with an auxiliary pressurize unit (6), described auxiliary pressurize unit (6) comprises energy storage (61) and by pass valve (62).
5. demand-based active anti-rollover hydraulic inline suspension system for heavy truck according to claim 4, is characterized in that: the oil circuit that described energy storage (61) is communicated with hydraulic circuit is provided with dash pot valve (64).
6. demand-based active anti-rollover hydraulic inline suspension system for heavy truck according to claim 1 and 2, is characterized in that: between described middle back axle oil cylinder (31) and vehicle bridge (1) and described middle back axle oil cylinder (31) and vehicle frame (2), all by revolute, be connected.
7. demand-based active anti-rollover hydraulic inline suspension system for heavy truck according to claim 1 and 2, is characterized in that: between described propons oil cylinder (32) and vehicle bridge (1) and described propons oil cylinder (32) and vehicle frame (2), all by revolute, be connected.
8. demand-based active anti-rollover hydraulic inline suspension system for heavy truck according to claim 1 and 2, it is characterized in that: described changeover module (72) is solenoid directional control valve, described solenoid directional control valve comprises the oil inlet and two oil outlets that are communicated with Hydraulic Pump (71) pump hydraulic fluid port, one in described two oil outlets is communicated with described the first hydraulic circuit (4), and another is communicated with described the second hydraulic circuit (5).
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| US9399382B2 (en) | 2014-02-03 | 2016-07-26 | Cnh Industrial America Llc | Roll-over protection system |
| CN105365904A (en) * | 2015-12-08 | 2016-03-02 | 济南大学 | Novel anti-side turn corn harvester chassis |
| CN106585766A (en) * | 2016-10-25 | 2017-04-26 | 叶呈艳 | Anti-rollover body system for electric moped |
| CN107939894A (en) * | 2017-12-29 | 2018-04-20 | 山东大学 | A kind of ambulance stretcher vibrating isolation system and its method of work |
| CN109677225B (en) * | 2019-01-25 | 2020-10-27 | 中北大学 | Active/passive composite hydraulic suspension control strategy selection method |
| CN109703633A (en) * | 2019-02-22 | 2019-05-03 | 黄德华 | Anti-rollover system for automobiles |
| CN110758558A (en) * | 2019-06-20 | 2020-02-07 | 扬州中集通华专用车有限公司 | Trailer |
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