Light steering hydro-pneumatic spring
Technical field
The present invention relates to the hydro-pneumatic spring of vehicle suspension, specifically a kind of light steering hydro-pneumatic spring, it is used on the small and medium-sized car such as offroad vehicle, passenger vehicle.
Background technique
The hydro-pneumatic spring that general vehicle uses has elasticity and damping function, also may have the function of Altitude control simultaneously, usually need separately establish guidance system to realize relative movement correct between wheel and vehicle frame (vehicle body).
The hydro-pneumatic spring being installed on deflecting roller must install steering system separately for realizing wheel steering, and this usually brings complex structure, difficult arrangement, the problems such as manufacture cost rising, more at some deflecting rollers, in the vehicle that wheelbase is longer, this layout is in the cards hardly.Meanwhile, steering system is installed and also can produces negative impact to the design of vehicle bearing space; The vehicle of general installation steering system is when wheel hop, and steering system part is beated thereupon, causes interference, thus forms the bad phenomenon of additional steering angle.
Summary of the invention
The object of the invention is to provide a kind of simple and reasonable, namely there is the effect of elasticity, damping and guiding, also possess the light steering hydro-pneumatic spring of the effect of Altitude control.
The object of the present invention is achieved like this, this hydro-pneumatic spring comprises this hydro-pneumatic spring and comprises lidstock circle, lower guide pin bushing, piston packing, upper guide bush, cylinder barrel upper cover seal ring and jump ring under capping under oil-feed interface, steering arm, cylinder barrel upper cover, wear-resistant gasket, cylinder barrel, splined shaft, piston, cylinder barrel, piston bottom, cylinder barrel, described splined shaft is connected with piston by spline, is connected by spline with piston bottom simultaneously; Be connected by spline between steering arm with splined shaft, piston bottom is connected by welding mutually with between piston, and piston bottom is connected with wheel A8, and cylinder barrel is connected with vehicle frame A2 phase, the torque that steering arm produces passes to piston bottom by splined shaft and piston, thus realizes turning to of wheel A8.
The present invention has the following advantages and good effect owing to adopting said structure:
1, the invention provides a kind of new light steering hydro-pneumatic spring structure, it, by disposed thereon and transmission of torque will not be turned to tire with the steering arm of wheel hop or other executive component (as oil hydraulic motor, actuating motor etc.), realizes wheel steering; Meanwhile, the hydro-pneumatic spring of wherein integrated setting makes it have the effect of elasticity, damping and guiding, also can possess the effect of Altitude control.Compact structure of the present invention, simple, integrated modular designs, and is easy to arrange, wide adaptability, is applicable to the vehicle that compound suspension is also applicable to pure hydro pneumatic suspension.
2, the steering torque that steering arm produces can be directly passed to piston bottom by hydro-pneumatic spring of the present invention, piston bottom is connected with tire, and cylinder barrel is connected mutually with vehicle frame (vehicle body), can realize tyre revolution to, do not need peripheral hardware steering system, slot milling maximizing vehicle bearing space; Integrated design makes suspension frame structure simple, and cost reduces, and easily arranges in vehicle.
Accompanying drawing explanation
Fig. 1 is light steering hydro-pneumatic spring overall structure schematic diagram.
Fig. 2 another embodiment of the present invention structural representation.
Another mode of execution structural representation of Fig. 3 the present invention.
The third mode of execution structural representation of Fig. 4 the present invention.
Fig. 5 is the using state reference drawing of suspension application in vehicle being provided with light steering hydro-pneumatic spring.
Embodiment
As shown in Figure 1, this light steering hydro-pneumatic spring comprises lidstock circle 10, lower guide pin bushing 11, piston packing 12, upper guide bush 13, cylinder barrel upper cover seal ring 14 and jump ring 15 under capping 8 under oil-feed interface 1, steering arm 2, cylinder barrel upper cover 3, wear-resistant gasket 4, cylinder barrel 5, splined shaft 6, piston 7, cylinder barrel, piston bottom 9, cylinder barrel, described splined shaft 6 is connected with piston 7 by spline, is connected by spline with piston bottom 9 simultaneously; Being connected by spline between steering arm 2 with splined shaft 6, being connected mutually by welding between piston bottom 9 with piston 7; The steering torque that steering arm 2 produces can be directly passed to piston bottom 9 by structure like this, piston bottom 9 is connected with tire, and cylinder barrel 5 is connected mutually with vehicle frame (vehicle body), can realize tyre revolution to, do not need peripheral hardware steering system, slot milling maximizing vehicle bearing space; Integrated design makes suspension frame structure simple, and cost reduces, and easily arranges in vehicle.
Described steering arm 2 is connected with splined shaft 6 by spline, steering arm 2 by produce transmission of torque to splined shaft 6; Adopt jump ring 15 to limit the relative position of splined shaft 6 and cylinder barrel upper cover 3, be provided with wear-resistant gasket 4 between the boss on cylinder barrel upper cover 3 and splined shaft 6, avoid both directly contact frictions; Cylinder barrel upper cover 3 is fixed on the boss of cylinder barrel 5 under oil pressure effect; Cylinder barrel upper cover 3 is provided with cylinder barrel upper cover seal ring 14, and itself and piston 7 form a cavity A, and piston 7 is provided with piston packing 12; Piston 7 and splined shaft 6, between the two can transmitting torques mutually by spline joint, and while can slide mutually along the axis of splined shaft 6; Being connected mutually by welding between piston 7 with piston bottom 9, forming another cavity B; Cavity A is connected with cavity B formation airtight oil pocket by multiple oil duct b that piston 7 head is arranged, and cavity A to be connected with the accumulator of peripheral hardware to form hydro-pneumatic spring by being arranged on oilhole c in splined shaft 6 and oil-feed interface 1; Be connected mutually by welding between capping 8 with cylinder barrel 5 under cylinder barrel, under cylinder barrel, capping 8 is provided with lidstock circle 10 under cylinder barrel, prevents the fluid of seepage to be exposed to the external world; The oil of seepage is flowed out by the oilhole a be arranged on cylinder barrel; Upper guide bush 13 is arranged at the head of piston 7, and lower guide pin bushing 11 is arranged under cylinder barrel in capping 8, and both form the guidance system of apparatus of the present invention jointly, play antiwear and reducing friction simultaneously.Cylinder barrel 5 is connected with vehicle frame (vehicle body) mutually by the connecting base 16 that it is arranged, and piston bottom 9 is connected with wheel, and steering arm 2 promotes splined shaft 6 and rotates, and drives piston 7 and piston bottom 9 to rotate, thus realizes turning to of wheel.
Fig. 2 is the another kind of mode of execution of light steering hydro-pneumatic spring of the present invention, and wherein piston 7 head is without oilhole, is connected, is applicable to the structure that size is less between cavity A with cavity B by the through hole c in splined shaft 6.
Fig. 3 is another mode of execution of light steering hydro-pneumatic spring of the present invention, and what wherein pass to tire turns to torque by other executive component 2(as oil hydraulic motor, actuating motor etc.) produce, apply more flexible.
Fig. 4 is the third mode of execution of light steering hydro-pneumatic spring of the present invention, and be provided with thrust-bearing between the boss wherein on cylinder barrel upper cover 3 and splined shaft 6, frictional force is less.
As shown in Figure 5, what the figure shows is utilize the present invention as the suspension system of constituent element, is made up of light steering hydro-pneumatic spring A1, vehicle frame (vehicle body) A2, bi-bit bi-pass selector valve A3, variable damper valve A4, gas-filled type accumulator A5, electric oil pump A6, oil sources A7 and wheel A8.Can steering oil air spring A1, variable damper valve A4 and the typical complete hydro-pneumatic spring of gas-filled type accumulator A5 formation.
By controlling the on off state of bi-bit bi-pass selector valve A3, the rigidity and tenderness realizing suspension switches; Variable damper valve A4 realizes the damping characteristic of suspension; In gas-filled type accumulator A5, the elasticity of nitrogen realizes the stiffness characteristics of suspension; The guide movement of suspension is by ensureing, without the need to peripheral hardware suspension guide mechanism by steering oil air spring A1.
Can the cylinder barrel 5(of steering oil air spring A1 as Fig. 1) be connected with vehicle frame (vehicle body) A2 phase, wheel A8 and piston bottom 9(are as Fig. 1) be connected.When wheel A8 relative frame (vehicle body) A2 needs to rotate, promote steering arm 2(as Fig. 1) or other executive component of action 2(as oil hydraulic motor, actuating motor etc.) (as Fig. 3) can realize the rotation of wheel A8; Carry out along the guide structure of steering oil air spring A1 during wheel A8 relative frame (vehicle body) A2 bob; During wheel A8 relative frame (vehicle body) A2 bob, steering arm 2(is as Fig. 1) or other executive component 2(as oil hydraulic motor, actuating motor etc.) (as Fig. 3) and vehicle frame (vehicle body) A2 geo-stationary, avoid the generation of movement interference, eliminate between steering system and suspension and interfere the additional steering angle caused.