CN114347969A - Air path system for vehicle and vehicle with air path system - Google Patents
Air path system for vehicle and vehicle with air path system Download PDFInfo
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- CN114347969A CN114347969A CN202210051362.8A CN202210051362A CN114347969A CN 114347969 A CN114347969 A CN 114347969A CN 202210051362 A CN202210051362 A CN 202210051362A CN 114347969 A CN114347969 A CN 114347969A
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- air outlet
- air inlet
- brake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
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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
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
- B60G17/052—Pneumatic spring characteristics
- B60G17/0523—Regulating distributors or valves for pneumatic springs
- B60G17/0528—Pressure regulating or air filling valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/06—Applications or arrangements of reservoirs
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- 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
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/152—Pneumatic spring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
- B60G2500/204—Pressure regulating valves for air-springs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Hydraulic Control Valves For Brake Systems (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a gas circuit system for a vehicle and the vehicle with the same, comprising: a gas storage device; a load-bearing air bag; the load sensing valve comprises a swing rod and a main body, the main body is provided with a first air outlet and a first air inlet, and the output air pressure of the first air outlet is related to the angle between the swing rod and the main body; the brake valve group is provided with a first control end, a second air inlet and a second air outlet, the first control end is connected with the first air inlet, the second air inlet is communicated with the second air outlet when the brake valve group is in an open state, the first control end controls the output air pressure of the second air outlet according to the output air pressure of the first air inlet, and the second air inlet is disconnected with the second air outlet when the brake valve group is in a closed state; and the support bridge brake chamber is communicated with the second air outlet. The air path system of the embodiment of the invention automatically adjusts the air pressure in the bearing air bag and the air pressure in the brake air chamber of the support axle according to the load of the vehicle, reduces the bearing of the drive axle and supplements the braking force of the vehicle.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to an air path system for a vehicle and the vehicle with the air path system.
Background
The air circuit system for the vehicle in the related art generally comprises an air storage device, a bearing air bag, a plurality of electromagnetic valves and a supporting bridge brake air chamber, wherein the air charging and discharging of the bearing air bag and the braking of the supporting bridge are respectively and independently controlled by one electromagnetic valve, the plurality of electromagnetic valves can be closed when the vehicle is empty, so that the bearing air bag does not bear stress and the supporting bridge does not participate in braking, and the plurality of electromagnetic valves can be opened when the vehicle is full, so that the bearing air bag participates in bearing and the supporting bridge participates in braking.
However, when the vehicle is in a state between no-load and full-load, if the electromagnetic valve is opened, the load of the drive axle is insufficient, the driving force is low, and the brake force of the support axle is easily overlarge to cause locking; if the solenoid valve is closed, the drive axle load is too high and the braking force of the support axle is insufficient.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide an air passage system for a vehicle, which is capable of automatically adjusting air pressure in a load-bearing air bag and air pressure in a brake air chamber of a support axle according to a load of the vehicle, reducing a load of a drive axle, and supplementing a braking force of the vehicle.
The invention also provides a vehicle with the air path system for the vehicle.
In order to achieve the above object, an embodiment according to a first aspect of the present invention proposes an air path system for a vehicle, including: a gas storage device; a load-bearing air bag; the load sensing valve comprises a swing rod and a main body which are rotatably connected, the main body is provided with a first air outlet and a first air inlet which are communicated with each other and is suitable for being installed on one of a drive axle and a frame, the swing rod is suitable for being connected to the other of the drive axle and the frame, the first air inlet is communicated with the air storage device, the first air outlet is communicated with the bearing air bag, and the output air pressure is in negative correlation with the angle between the swing rod and the main body; the brake valve group is provided with a first control end, a second air inlet and a second air outlet which are communicated with each other, and the brake valve group can be switched between an opening state and a closing state, the first control end is connected with the first air inlet, the second air inlet is communicated with the second air outlet when the brake valve group is in the opening state, the first control end controls the output air pressure of the second air outlet according to the output air pressure of the first air inlet, and the second air inlet is disconnected with the second air outlet when the brake valve group is in the closing state; and the support bridge brake air chamber is communicated with the second air outlet.
The air path system for the vehicle can automatically adjust the air pressure in the bearing air bag and the air pressure in the brake air chamber of the support axle according to the load of the vehicle, reduce the bearing of the drive axle and supplement the braking force of the vehicle.
According to some embodiments of the invention, the brake valve assembly comprises: the first relay valve is provided with a second control end, the second air inlet and the second air outlet; the second relay valve is provided with the first control end, a third air inlet and a third air outlet, and the third air outlet is connected with the second control end; when the brake valve group is in the open state, the third air inlet is communicated with the air storage device, the first control end controls the output air pressure of the third air outlet according to the output air pressure of the first air outlet, and the second control end controls the output air pressure of the second air outlet according to the output air pressure of the third air outlet; when the brake valve group is in the closed state, the third air inlet is disconnected with the air storage device, and the second air inlet is disconnected with the second air outlet.
According to some embodiments of the invention, the brake valve pack further comprises: the brake valve is communicated with the third air inlet through the brake valve, and the brake valve can be switched between a braking state and a non-braking state; when the brake valve group is in the opening state, the brake valve is in the braking state, so that the air storage device is communicated with the third air inlet; when the brake valve group is in the closed state, the brake valve is in the non-braking state so as to disconnect the air storage device and the third air inlet.
According to some embodiments of the invention, the air path system for a vehicle further comprises: and the gas storage device is communicated with the first gas inlet through the pressure limiting valve.
According to some embodiments of the invention, the gas storage device comprises: a first air reservoir in communication with the first air inlet; a second air reservoir in communication with the second air inlet.
According to some embodiments of the invention, the load-bearing airbag includes a first airbag and a second airbag, the first airbag and the second airbag are respectively disposed at two sides of the frame in the width direction and are both connected to the first air outlet; the support bridge brake chamber comprises a first brake chamber and a second brake chamber, and the first brake chamber and the second brake chamber are respectively arranged on two sides of the width direction of the frame and are connected with the second air outlet.
There is also provided in accordance with a second aspect embodiment of the present invention a vehicle including: a frame; a drive axle floatably connected to the frame; the air path system for the vehicle is characterized by comprising an air path system, a first air path control device and a second air path control device, wherein the air path system is used for the vehicle according to an embodiment of a first aspect of the invention; and the supporting bridge is connected with the frame through the bearing air bag.
According to the vehicle of the embodiment of the second aspect of the invention, by utilizing the air passage system for the vehicle according to the embodiment of the first aspect of the invention, the air pressure in the air bag bearing and the air pressure in the air bag braking chamber of the support axle can be automatically adjusted according to the load of the vehicle, the load of the drive axle is reduced, and the braking force of the vehicle is supplemented.
According to some embodiments of the invention, the body is mounted to the frame, the swing link is connected to the drive axle, and the swing link extends in a horizontal direction when the frame is unloaded.
According to some embodiments of the invention, the vehicle further comprises: the connecting rod comprises a first section and a second section, the first section extends along the length direction of the frame, one end of the first section is connected with the drive axle, the second section extends along the height direction of the frame, the lower end of the second section is connected with the other end of the first section, and one end of the swing rod, which is far away from the main body, is connected with the upper end of the second section.
According to some embodiments of the invention, the vehicle further comprises: the control element is positioned in a cab of the frame, is connected with the brake valve group and is used for controlling the brake valve group to be switched between the opening state and the closing state.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram of an air path system for a vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of connection of an inductive load valve with a frame and a drive axle of an air circuit system for a vehicle according to an embodiment of the invention.
Reference numerals:
an air passage system 1 for a vehicle,
A gas storage device 100, a first gas storage cylinder 110, a second gas storage cylinder 120,
A bearing air bag 200, a first air bag 210, a second air bag 220,
A brake valve set 400, a first relay valve 410, a second control end 411, a second air inlet 412, a second air outlet 413, a second relay valve 420, a first control end 421, a third air inlet 422, a third air outlet 423, a brake valve 430, a brake valve seat,
Support bridge brake chamber 500, first brake chamber 510, second brake chamber 520, pressure limiting valve 600,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present invention, "a plurality" means two or more, and "several" means one or more.
An air path system 1 for a vehicle according to an embodiment of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, an air path system 1 for a vehicle according to an embodiment of the present invention includes an air storage device 100, a carrier air bag 200, a load sensing valve 300, a valve group 400, and a support bridge brake chamber 500.
The load sensing valve 300 comprises a swing rod 310 and a main body 320 which are rotatably connected, the main body 320 is provided with a first air outlet 321 and a first air inlet 322 which are communicated with each other and is suitable for being installed on one of a drive axle 800 and a frame 700, the swing rod 310 is suitable for being connected to the other of the drive axle 800 and the frame 700, the first air inlet 322 is communicated with the air storage device 100, the first air outlet 321 is communicated with the load bearing air bag 200, the output air pressure is related to the angle A between the swing rod 310 and the main body 320, the brake valve group 400 is provided with a first control end 421, a second air inlet 412 and a second air outlet 413 which are communicated with each other and can be switched between an opening state and a closing state, the first control end 421 is connected with the first air inlet 322, the second air inlet 412 is communicated with the second air outlet 413 when the brake valve group 400 is in the opening state, and the first control end 421 controls the output air pressure of the second air outlet 413 according to the output air pressure of the first air inlet 322, when the brake valve set 400 is in the closed state, the second air inlet 412 and the second air outlet 413 are disconnected, and the support bridge brake chamber 500 is communicated with the second air outlet 413.
According to the air passage system 1 for a vehicle of the embodiment of the present invention, by dividing the load sensing valve 300 into the swing link 310 and the main body 320 which are rotatably connected, i.e., the swing link 310 and the main body 320 are rotatably connected, the main body 320 is provided with the first air outlet 321 and the first air inlet 322 which are communicated and is adapted to be mounted to one of the transaxle 800 and the vehicle frame 700, and the swing link 310 is adapted to be connected to the other of the transaxle 800 and the vehicle frame 700.
For example, one end of the swing link 310 may be connected to the driving axle 800, one end of the swing link 310 may move along with the driving axle 800, the other end of the swing link 310 may be rotatably connected to the main body 320, the main body 320 may be connected to the vehicle frame 700, and the main body 320 may move along with the vehicle frame 700, such that when the relative position between the vehicle frame 700 and the driving axle 800 changes, the included angle between the swing link 310 and the main body 320 may also change.
Of course, one end of the swing link 310 may be connected to the frame 700, and at this time, the main body 320 is connected to the driving axle 800, and when the relative position between the frame 700 and the driving axle 800 changes, the included angle between the swing link 310 and the main body 320 also changes.
For example, a plate spring suspension is generally disposed between the frame 700 and the drive axle 800, when the load of the vehicle increases, the frame 700 moves downward due to the increase of the force, so that the distance between the frame 700 and the drive axle 800 decreases, and at this time, the included angle between the swing link 310 and the main body 320 decreases as the height of the frame 700 decreases, and the plate spring suspension is stressed to contract; when the load of the vehicle is reduced, the stress on the vehicle frame 700 is reduced, the leaf spring suspension is reset to push the vehicle frame 700 to move upwards, the distance between the vehicle frame 700 and the drive axle 800 is increased, and the included angle between the swing rod 310 and the main body 320 is increased along with the increase of the height of the vehicle frame 700.
Moreover, the first air inlet 322 is communicated with the air storage device 100, the first air outlet 321 is communicated with the carrying air bag 200, and the output air pressure is related to the angle a between the swing link 310 and the main body 320, for example, the output air pressure of the first air outlet 321 may be negatively related to the angle a between the swing link 310 and the main body 320.
That is, when the load of the vehicle becomes larger and the included angle between the swing link 310 and the main body 320 becomes smaller, the output air pressure of the first air outlet 321 will increase, so as to increase the air pressure in the air bag 200, the air bag 200 is generally disposed between the vehicle frame 700 and the support axle (i.e. the axle except the axle 800 of the vehicle), when the air pressure in the air bag 800 increases, the support axle needs to exert a larger supporting force on the vehicle frame 700, and the support axle bears a larger part of the vehicle load, thereby avoiding the over-large load of the axle 800, preventing the axle 800 from being damaged, and prolonging the service life of the axle 800 and the leaf spring suspension.
When the load of the vehicle is small, the included angle between the swing link 310 and the main body 320 is large, and the output air pressure of the first air outlet 321 is small, so that the air pressure in the bearing air bag 200 is small, and at the moment, the supporting force of the support axle on the frame 700 is small, so that the drive axle 800 can effectively exert the self-bearing capacity.
Moreover, compared with the air path system for controlling the bearing air bag by adopting the electromagnetic valve in the related art, the air path system for controlling the bearing air bag in the invention has the advantages that whether the output air pressure of the first air outlet 321 of the load sensing valve 300 is changed or not is not required to be electromagnetically controlled, so that no matter when the vehicle runs or stops, the air pressure in the bearing air bag 200 can be kept unchanged, the bearing air bag 200 can always play a bearing role, the phenomenon that the bearing of the drive axle 800 is overlarge due to the change of the output air pressure of the first air outlet 321 of the load sensing valve 300 during the stop is avoided, and the bearing reliability of the air path system 1 is higher.
In addition, the brake valve set 400 is provided with a first control end 421, a second air inlet 412 and a second air outlet 413 which are communicated with each other, and is switchable between an open state and a closed state, the first control end 421 is connected with the first air inlet 322, the second air inlet 412 and the second air outlet 413 are communicated with each other when the brake valve set 400 is in the open state, the first control end 421 controls the output air pressure of the second air outlet 413, and the second air inlet 412 and the second air outlet 413 are disconnected when the brake valve set 400 is in the closed state. And, the support bridge brake chamber 500 communicates with the second air outlet 413.
Therefore, when the load of the vehicle is large, the motion inertia of the vehicle is large, and the output air pressure of the first air inlet 322 is large, so that when the brake valve set 400 is opened, the second air inlet 412 is communicated with the second air outlet 413, at this time, the first control end 421 can adjust the output air pressure of the second air outlet 413 to be large under the compression of the output air pressure of the first air inlet 322, so that the air pressure in the support axle brake air chamber 500 is large, the braking force of the support axle brake air chamber 500 on the support axle is large, when the braking force is applied to the drive axle 800 to control the braking of the vehicle, a large braking force can be supplemented to the vehicle through the support axle, and the braking effect of the vehicle is good;
under the condition that the load of the vehicle is small, the motion inertia of the vehicle is small, and the output air pressure of the first air inlet 322 is small, so when the brake valve group 400 is opened, the second air inlet 412 is communicated with the second air outlet 413, at the moment, the first control end 421 can adjust the output air pressure of the second air outlet 413 to be small under the compression of the output air pressure of the first air inlet 322, so that the air pressure in the support bridge brake air chamber 500 is small, the braking force of the support bridge brake air chamber 500 on the support bridge is small, the situation that the vehicle is locked due to the fact that the braking force on the support bridge is too large is avoided, and the safety is higher.
In conclusion, the supporting force of the supporting bridge on the frame 700 and the braking force of the supporting bridge brake chamber 500 on the supporting bridge can be continuously adjusted according to the load of the vehicle, so that sufficient supporting force can be ensured, the vehicle can not be locked due to overlarge braking force, the running safety of the vehicle is higher, the manual operation of a driver is not needed, and the automation degree is higher.
As such, the air path system 1 for a vehicle according to the embodiment of the present invention can automatically adjust the air pressure in the load-bearing air bag 200 and the air pressure in the support axle brake chamber 500 according to the load of the vehicle, reduce the load of the transaxle 800, and supplement the braking force of the vehicle.
In some embodiments of the present invention, as shown in fig. 1, the brake valve assembly 400 includes a first relay valve 410 and a second relay valve 420, the first relay valve 410 has a second control end 411, a second air inlet 412 and a second air outlet 413, the second relay valve 420 has a first control end 421, a third air inlet 422 and a third air outlet 423, and the third air outlet 423 is connected to the second control end 411.
When the brake valve set 400 is in an open state, the third air inlet 422 is communicated with the air storage device 100, the first control end 421 controls the output air pressure of the third air outlet 423 according to the output air pressure of the first air outlet 321, and the second control end 411 controls the output air pressure of the second air outlet 413 according to the output air pressure of the third air outlet 423; when the valve assembly 400 is in the closed state, the third air inlet 422 is disconnected from the air storage device 100, and the second air inlet 412 and the second air outlet 413 are disconnected.
Thus, the air storage device 100 can inflate the support axle brake chamber 500 through the first relay valve 410, the second relay valve 420 can control the output air pressure of the first relay valve 410, and the load sensing valve 300 can control the output air pressure of the second relay valve 420.
Specifically, the output air pressure of the load sense valve 300 acts on the first control port 421 of the second relay valve 420 to communicate the third air inlet 422 with the third air outlet 423, the output air pressure of the air reservoir 100 can flow through the second relay valve 420 and act on the second control port 411 of the first relay valve 410 to communicate the second air inlet 412 with the second air outlet 413 of the first relay valve 410, and at this time, the output air pressure of the air reservoir 100 can flow through the first relay valve 410 to the support bridge brake air chamber 500 to apply a braking force to the support bridge by the support bridge brake air chamber 500.
The output air pressure of the third air outlet 423 is limited by the output air pressure of the load sensing valve 300, for example, the output air pressure of the third air outlet 423 cannot be greater than the output air pressure of the load sensing valve 300. The output air pressure from the third air outlet 423 acts on the second control end 411, and the output air pressure of the second air outlet 413 is limited by the output air pressure from the third air outlet 423, for example, the output air pressure of the second air outlet 413 cannot be larger than the output air pressure of the third air outlet 423.
Therefore, the output air pressure of the air storage device 100 to the support axle brake air chamber 500 is limited by the output air pressure of the load sensing valve 300, namely, the braking force of the support axle is influenced by the vehicle load, so that the condition that the braking force of the support axle is too large and is locked when the vehicle load is small and the driving force of the drive axle 800 is small is avoided, and the driving safety is high.
In some embodiments of the present invention, as shown in fig. 1, brake valve pack 400 further includes a brake valve 430.
The air reservoir 100 communicates with the third air inlet 422 through the brake valve 430, and the brake valve 430 is switchable between a braking state and a non-braking state. When the brake valve set 400 is in the open state, the brake valve 430 is in the brake state, so that the air storage device 100 is communicated with the third air inlet 422; when the valve assembly 400 is in the closed state, the brake valve 430 is in the non-braking state to disconnect the air storage device 100 from the third air inlet 422.
When the vehicle normally runs, the brake valve 430 is in a non-braking state, at this time, the air storage device 100 is disconnected from the support axle brake air chamber 500, the driver can switch the brake valve 430 from the non-braking state to the braking state when the vehicle needs to be braked, so that the air in the air storage device 100 can be conveyed to the third air inlet 422 and flows out through the third air outlet 423 to act on the second control end 411, so that the second air inlet 412 is communicated with the second air outlet 413, the air storage device 100 can inflate the support axle brake air chamber 500, so that the support axle also participates in braking, and the braking force of the vehicle is increased.
In some embodiments of the present invention, as shown in fig. 1, the air path system 1 for a vehicle further includes a pressure limiting valve 600, and the air storage device 100 is communicated with the first air inlet 322 through the pressure limiting valve 600.
Specifically, the pressure limiting valve 600 may have a set value, the air pressure of the air flow of the air storage device 100 passing through the pressure limiting valve 600 cannot be higher than the set value, when the output air pressure of the air storage device 100 is lower than or equal to the set value, the pressure limiting valve 600 may be opened as a passage at this time, and the air flow of the air storage device 100 may directly flow to the first air inlet 322 of the load sensing valve 300 through the pressure limiting valve 600;
when the output pressure of the gas storage device 100 is higher than the set value, the pressure limiting valve 600 can adjust the output pressure to the first gas outlet 321, so that the output pressure of the gas storage device 100 flowing to the first gas outlet 321 is reduced to be equal to the set value of the pressure limiting valve 600.
The set value of the pressure limiting valve 600 needs to be not higher than the maximum bearing pressure of the bearing airbag 200, so that the pressure limiting valve 600 can protect the bearing airbag 200, and the output pressure of the gas storage device 100 is prevented from being higher than the maximum bearing pressure of the bearing airbag 200 to damage the bearing airbag 200, so that the working reliability of the bearing airbag 200 is higher.
In some embodiments of the present invention, the air storage device 100 includes a first air cylinder 110 and a second air cylinder 120, the first air cylinder 110 is in communication with the first air inlet 322, and the second air cylinder 120 is in communication with the second air inlet 412.
For example, the first air cylinder 110 may be a suspension air cylinder, the second air cylinder 120 may be a driving air cylinder, the first air cylinder 110 mainly inflates the bearing air bag 200 so that the bearing air bag 200 can bear stress, and the second air cylinder 120 mainly inflates the support bridge brake air chamber 500 so that the support bridge can also participate in braking.
Wherein, set up first air receiver 110 and second air receiver 120 respectively and aerify for bearing gasbag 200 and support bridge brake chamber 500, bear gasbag 200 and support bridge brake chamber 500 mutual noninterference when aerifing, can avoid atmospheric pressure most to have filled and born among the gasbag 200 and lead to supporting bridge brake chamber 500 atmospheric pressure not enough like this, or atmospheric pressure most has filled and has leaded to bearing the atmospheric pressure of gasbag 200 not enough in supporting bridge brake chamber 500, thereby can guarantee that the inflation atmospheric pressure who bears gasbag 200 is enough, bearing capacity is stronger, can also guarantee simultaneously that the inflation volume of supporting bridge brake chamber 500 is also sufficient, the braking force of support bridge satisfies the demand.
In addition, the gas storage device 100 has higher arrangement flexibility, the length of the gas passage can be shortened, and the space utilization rate is improved.
In some embodiments of the present invention, as shown in FIG. 1, the load-bearing bladder 200 includes a first bladder 210 and a second bladder 220.
The first air bag 210 and the second air bag 220 are respectively arranged on two sides of the frame 700 in the width direction and are connected with the first air outlet 321, wherein the first air reservoir 110 can simultaneously inflate or deflate the first air bag 210 and the second air bag 220 so as to ensure that the air pressure in the first air bag 210 and the air pressure in the second air bag 220 are always the same, the first air bag 210 and the second air bag 220 can provide the same bearing capacity, and the vehicle can be prevented from inclining while the bearing capacity of the vehicle is improved.
In addition, the support bridge brake chamber 500 includes a first brake chamber 510 and a second brake chamber 520, the first brake chamber 510 and the second brake chamber 520 are respectively disposed at two sides of the width direction of the vehicle frame 700 and are connected with the second air outlet 413, the second air cylinder 120 can simultaneously inflate or deflate the first brake chamber 510 and the second brake chamber 520, so as to ensure that the air pressure in the first brake chamber 510 and the air pressure in the second brake chamber 520 are always the same, the first brake chamber 510 and the second brake chamber 520 can provide the same braking force, the braking forces at two sides of the support bridge are the same, the vehicle can be prevented from deviating during braking while the braking force of the vehicle is improved, and the driving stability of the vehicle is improved.
A vehicle according to an embodiment of the present invention is described below with reference to the drawings, and as shown in fig. 2, the vehicle includes a frame 700, a transaxle 800, an air path system 1 for a vehicle according to the above-described embodiment of the present invention, and a support bridge. Drive axle 800 is floatably connected to frame 700 and the support axle is connected to frame 700 by load-bearing bladder 200. Wherein the vehicle may be a heavy goods vehicle.
The floating is that the vehicle frame 700 and the drive axle 800 can be relatively close to or far away from each other in the vertical direction, and specifically, when the load of the vehicle is increased, the vehicle frame 700 moves downwards due to the increased force, so that the distance between the vehicle frame 700 and the drive axle 800 is reduced; when the load of the vehicle is reduced, the frame 700 moves upward due to the reduced force, resulting in an increased distance between the frame 700 and the transaxle 800.
When the vehicle is unloaded, the height of the vehicle frame 700 is the highest, and the distance between the vehicle frame 700 and the drive axle 800 is the farthest, and when the vehicle is fully loaded, the height of the vehicle frame 700 is the lowest, and the distance between the vehicle frame 700 and the drive axle 800 is the closest.
In addition, the supporting bridge is connected with the frame 700 through the bearing airbag 200, when the vehicle load is increased, the bearing airbag 200 can be inflated through the first air reservoir 110, the air pressure in the bearing airbag 200 is increased, the size of the bearing airbag 200 in the vertical direction is also increased, the supporting bridge can bear larger load, the load of the drive axle 800 can be reduced, the driving force of the drive axle 800 is effectively utilized, meanwhile, the overlarge load of the drive axle 800 can be avoided, and the drive axle 800 is protected.
According to the vehicle of the embodiment of the present invention, by using the air passage system 1 for a vehicle according to the above-described embodiment of the present invention, it is possible to automatically adjust the air pressure inside the load-bearing air bag 200 and the air pressure inside the brake air chamber of the support axle according to the load of the vehicle, reduce the load of the drive axle, and supplement the braking force of the vehicle.
In some embodiments of the present invention, as shown in fig. 2, the main body 320 is mounted to the frame 700, the swing link 310 is connected to the driving axle 800, and the swing link 310 extends in a horizontal direction when the frame 700 is unloaded. And, the main body 320 may extend in a vertical direction, and an included angle between the main body 320 and the swing link 310 is 90 ° when the vehicle is unloaded.
Therefore, when the swing link 310 is horizontal, it indicates that the vehicle frame 700 is unloaded, and the load of the vehicle is minimum at this time, the output air pressure of the load sensing valve 300 may be minimum, and the bearing capacity of the bearing airbag 200 is minimum. When the load of the frame 700 is increased, the frame 700 moves downward and drives the main body 320 to move downward, and the end of the swing rod 310 connected with the main body 320 tilts downward, so that the included angle between the swing rod 310 and the main body 320 changes, and the included angle between the swing rod 310 and the main body 320 gradually decreases.
In some embodiments of the present invention, as shown in FIG. 2, the vehicle further includes a linkage 900.
The link 900 includes a first section 910 and a second section 920, the first section 910 extends along the length direction of the frame 700 and has one end connected to the transaxle 800, the second section 920 extends along the height direction of the frame 700 and has a lower end connected to the other end of the first section 910, and one end of the swing link 310 away from the main body 320 is connected to the upper end of the second section 920.
Specifically, the connection between the swing link 310 and the second section 920 may rotate relatively, the connecting rod 900 may be fixed, the swing link 310 may rotate around the upper end of the second section 920, and the first section 910 may extend forward or backward from the driving axle 800, for example, the first section 910 may extend backward from the driving axle 800, so as to increase the distance between the swing link 310 and the driving axle, so that the connection between the swing link 310 and the connecting rod 900 is farther from the driving axle 800, thereby avoiding the position interference between the swing link 310 and the driving axle 800 when swinging, and the second section 920 extends upward from the end of the first section 910 far from the driving axle 800, so that the end of the second section 920 far from the first section 910 may be closer to the swing link 310, so as to facilitate the connection between the swing link 310 and the connecting rod 900, and the structural layout is more reasonable.
In some embodiments of the present invention, the vehicle further includes a control member (not shown) located within the cab of the frame 700 and coupled to the valve train 400 for controlling the valve train 400 to switch between the open state and the closed state.
For example, the control piece can be the running-board, and when the vehicle normally traveled, the valve unit was in the closed condition, and the driver can step on the running-board when needs braked to the vehicle, made the valve unit switch to the open mode to make the supporting bridge participate in the braking, made things convenient for like this to the valve unit at the closed condition and the switch between the open mode, the operation is more convenient. And the control member itself has the ability to control the braking of the transaxle 800.
Other constructions and operations of the air path system 1 for a vehicle and the vehicle having the same according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of "a particular embodiment," "a particular example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An air path system for a vehicle, comprising:
a gas storage device;
a load-bearing air bag;
the load sensing valve comprises a swing rod and a main body which are rotatably connected, the main body is provided with a first air outlet and a first air inlet which are communicated with each other and is suitable for being installed on one of a drive axle and a frame, the swing rod is suitable for being connected to the other of the drive axle and the frame, the first air inlet is communicated with the air storage device, the first air outlet is communicated with the bearing air bag, and the output air pressure is related to the angle between the swing rod and the main body;
the brake valve group is provided with a first control end, a second air inlet and a second air outlet which are communicated with each other, and the brake valve group can be switched between an opening state and a closing state, the first control end is connected with the first air inlet, the second air inlet is communicated with the second air outlet when the brake valve group is in the opening state, the first control end controls the output air pressure of the second air outlet according to the output air pressure of the first air inlet, and the second air inlet is disconnected with the second air outlet when the brake valve group is in the closing state;
and the support bridge brake air chamber is communicated with the second air outlet.
2. The air passage system for a vehicle of claim 1, wherein said brake valve block comprises:
the first relay valve is provided with a second control end, the second air inlet and the second air outlet;
the second relay valve is provided with the first control end, a third air inlet and a third air outlet, and the third air outlet is connected with the second control end;
when the brake valve group is in the open state, the third air inlet is communicated with the air storage device, the first control end controls the output air pressure of the third air outlet according to the output air pressure of the first air outlet, and the second control end controls the output air pressure of the second air outlet according to the output air pressure of the third air outlet;
when the brake valve group is in the closed state, the third air inlet is disconnected with the air storage device, and the second air inlet is disconnected with the second air outlet.
3. The air passage system for a vehicle of claim 2, wherein said brake valve assembly further comprises:
the brake valve is communicated with the third air inlet through the brake valve, and the brake valve can be switched between a braking state and a non-braking state;
when the brake valve group is in the opening state, the brake valve is in the braking state, so that the air storage device is communicated with the third air inlet;
when the brake valve group is in the closed state, the brake valve is in the non-braking state so as to disconnect the air storage device and the third air inlet.
4. The air passage system for a vehicle of claim 1, further comprising:
and the gas storage device is communicated with the first gas inlet through the pressure limiting valve.
5. The air passage system for a vehicle of claim 1, wherein said air storage means comprises:
a first air reservoir in communication with the first air inlet;
a second air reservoir in communication with the second air inlet.
6. The air passage system for a vehicle according to any one of claims 1 to 5, wherein the carrier airbag includes a first airbag and a second airbag, the first airbag and the second airbag being respectively provided on both sides of the frame in the width direction and both connected to the first air outlet;
the support bridge brake chamber comprises a first brake chamber and a second brake chamber, and the first brake chamber and the second brake chamber are respectively arranged on two sides of the width direction of the frame and are connected with the second air outlet.
7. A vehicle, characterized by comprising:
a frame;
a drive axle floatably connected to the frame;
the air path system for a vehicle of any one of claims 1-6;
and the supporting bridge is connected with the frame through the bearing air bag.
8. The vehicle of claim 7, wherein the body is mounted to the frame, the swing link being connected to the drive axle, the swing link extending in a horizontal direction when the frame is unloaded.
9. The vehicle of claim 7, further comprising:
the connecting rod comprises a first section and a second section, the first section extends along the length direction of the frame, one end of the first section is connected with the drive axle, the second section extends along the height direction of the frame, the lower end of the second section is connected with the other end of the first section, and one end of the swing rod, which is far away from the main body, is connected with the upper end of the second section.
10. The vehicle of claim 7, further comprising:
the control element is positioned in a cab of the frame, is connected with the brake valve group and is used for controlling the brake valve group to be switched between the opening state and the closing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210051362.8A CN114347969B (en) | 2022-01-17 | 2022-01-17 | Air path system for vehicle and vehicle with air path system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210051362.8A CN114347969B (en) | 2022-01-17 | 2022-01-17 | Air path system for vehicle and vehicle with air path system |
Publications (2)
| Publication Number | Publication Date |
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| CN114347969A true CN114347969A (en) | 2022-04-15 |
| CN114347969B CN114347969B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210051362.8A Active CN114347969B (en) | 2022-01-17 | 2022-01-17 | Air path system for vehicle and vehicle with air path system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945689A (en) * | 1973-11-28 | 1976-03-23 | Jidosha Kiki Co., Ltd. | Combined load-sensing proportion and relay valve |
| CN102452383A (en) * | 2010-11-03 | 2012-05-16 | 中国第一汽车集团公司 | Load sensing valve system of vehicle with independent suspension |
| CN202264763U (en) * | 2011-10-11 | 2012-06-06 | 安徽江淮汽车股份有限公司 | Brake control system for axial tube type support axle of medium-sized cargo truck |
| CN104709261A (en) * | 2014-05-29 | 2015-06-17 | 湖北三江航天万山特种车辆有限公司 | Full-trailer braking system and braking method thereof |
| CN107933539A (en) * | 2017-11-28 | 2018-04-20 | 东风商用车有限公司 | Load sensing valve system of air suspension vehicle and control method thereof |
-
2022
- 2022-01-17 CN CN202210051362.8A patent/CN114347969B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945689A (en) * | 1973-11-28 | 1976-03-23 | Jidosha Kiki Co., Ltd. | Combined load-sensing proportion and relay valve |
| CN102452383A (en) * | 2010-11-03 | 2012-05-16 | 中国第一汽车集团公司 | Load sensing valve system of vehicle with independent suspension |
| CN202264763U (en) * | 2011-10-11 | 2012-06-06 | 安徽江淮汽车股份有限公司 | Brake control system for axial tube type support axle of medium-sized cargo truck |
| CN104709261A (en) * | 2014-05-29 | 2015-06-17 | 湖北三江航天万山特种车辆有限公司 | Full-trailer braking system and braking method thereof |
| CN107933539A (en) * | 2017-11-28 | 2018-04-20 | 东风商用车有限公司 | Load sensing valve system of air suspension vehicle and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114347969B (en) | 2023-03-28 |
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