CN221090412U - Adjustable oil gas suspension system of commercial vehicle - Google Patents
Adjustable oil gas suspension system of commercial vehicle Download PDFInfo
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- CN221090412U CN221090412U CN202323229468.1U CN202323229468U CN221090412U CN 221090412 U CN221090412 U CN 221090412U CN 202323229468 U CN202323229468 U CN 202323229468U CN 221090412 U CN221090412 U CN 221090412U
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- 239000000725 suspension Substances 0.000 title claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 230000007704 transition Effects 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 72
- 239000007789 gas Substances 0.000 description 28
- 238000013016 damping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Vehicle Body Suspensions (AREA)
Abstract
The utility model relates to an adjustable hydro-pneumatic suspension system of a commercial vehicle, which solves the problems of the existing heavy-duty vehicle using a leaf spring and an air spring. The suspension structure consists of a suspension structure and a control system; the suspension structural member comprises a suspension bracket, a left guide arm assembly, a right straight push rod support, a straight push rod, an upper bracket of an oil cylinder I, an upper bracket of an oil cylinder II, a right guide arm assembly, a right oil cylinder lower bracket, a left oil cylinder lower bracket and a straight push rod bridge upper support; the hydraulic control system comprises a flexible oil pipe, a right oil-gas spring, a height valve assembly, an oil pressure I steel pipe, an oil pump, a transition flange, a spline shaft, a short flexible oil pipe, a long flexible oil pipe, an oil tank, a main valve, a vehicle posture valve, an oil pressure II steel pipe, an oil pressure III steel pipe and an oil-gas spring. The utility model can not only improve the travelling comfort of the vehicle, but also increase the bearing capacity of the vehicle, is used in heavy-duty vehicle types, improves the travelling comfort, smoothness and reliability of the vehicle, and can also realize the free lifting of a single bridge or a double bridge.
Description
Technical Field
The utility model relates to a suspension system, in particular to an adjustable hydro-pneumatic suspension system of a commercial vehicle.
Background
Currently, a heavy-duty vehicle suspension system uses leaf springs and air springs as elastic elements, and an adjustable suspension is generally pneumatically adjusted. The leaf spring type suspension is a linear stiffness suspension, the vehicle is not adjustable, the comfort is poor, the air spring suspension is air pressure adjustment, the oil-gas suspension is perfected and improved on the basis of the air suspension, inert gas is used as an elastic medium, the pressure is transmitted by oil liquid, the leaf spring type suspension is suitable for various use conditions of the vehicle through the compressibility of the elastic gas and the damping characteristic of a hydraulic system, and the leaf spring type suspension is equivalent to a new set of interconnected hydraulic system on the basis of the air suspension. The air suspension has better damping performance, good buffering capacity, better anti-roll performance, rigidity which is about 4 times or more than that of the air suspension, and better bearing performance. The braking distance can be shortened by about 0.5-0.6mm compared with an air suspension, the transmission performance is more stable on rough road conditions, the tire jumping quantity is smaller, and the tire loss can be reduced.
The common suspension system adopts a leaf spring type suspension and an air spring type suspension, wherein the leaf spring type suspension is poor in comfort, the air spring type suspension is good in damping performance, but poor in rigidity and small in bearing capacity, and is not suitable for transporting heavy goods and running under complex working conditions. While hydro-pneumatic suspension systems have been used on cars, they are limited to the construction of heavy vehicles and the complex road conditions of travel, and have not been used.
Disclosure of utility model
The utility model provides an adjustable hydro-pneumatic suspension system of a commercial vehicle, which solves the problems existing in the prior art that a leaf spring and an air spring are used for a heavy vehicle.
The utility model is realized by the following technical scheme:
An adjustable hydro-pneumatic suspension system of a commercial vehicle comprises a suspension structural member and a control system;
The suspension structure part comprises a suspension bracket 1, a left guide arm assembly 2, a straight push rod support 3, a straight push rod 4, an upper bracket 5 of an oil cylinder I, an upper bracket 6 of an oil cylinder II, a right guide arm assembly 7, a right lower bracket 8 of the oil cylinder, a left lower bracket 9 of the oil cylinder and an upper bridge support 10 of the straight push rod;
The hydraulic control system comprises a flexible oil pipe 11, a right oil-gas spring 12, a height valve assembly 13, an oil pressure I steel pipe 14, an oil pump 15, a transitional flange 16, a spline shaft 17, a short flexible oil pipe 18, a long flexible oil pipe 19, an oil tank 20, a main valve 21, a vehicle posture valve 22, an oil pressure II steel pipe 23, an oil pressure III steel pipe 24 and a left oil-gas spring 25;
The suspension bracket 1 comprises 4 pieces, the left end 2 and the right end 7 of the guide arm assembly are respectively connected with the left guide arm assembly 2 and the right guide arm assembly 7 through bolts, the rear ends of the left guide arm assembly 2 and the right guide arm assembly 7 are respectively connected with a bridge through bolts, the straight push rod support 3 is fixed with a frame through bolts, the straight push rod 4 is fixed with the straight push rod support 3 and the straight push rod bridge upper support 10 through bolts, the upper oil cylinder I bracket 5 is fixed with the upper end of the right oil-gas spring 12 through bolts, the lower end of the right oil-gas spring 12 is fixed with the right oil cylinder lower bracket 8 and the left oil cylinder lower bracket 9 through bolts, the right oil-gas spring 12 is respectively connected with the main valve 21 through a flexible oil pipe 11, an oil pressure I steel pipe 14 and an oil pressure II steel pipe 23, the main valve 21 is connected with a vehicle posture valve 22 through an oil pressure III steel pipe 24, the left oil-gas spring 25 is connected with the flexible oil pipe 11 and the oil pressure I steel pipe 22 through a short flexible oil pipe 18, the front end of the oil pump 15 is connected with a transition flange 16, the transition flange 16 is connected with a spline shaft 17, the transition flange 16 is connected with the other end of the engine through bolts, the oil pump 15 is connected with the other end of the oil pump 15 through a long main valve 19 and a height controller in a combined control chamber 13 through a remote controller;
When the height of the vehicle is higher than the height of the initial setting, a pressure sensor, an angular displacement sensor and the like of the hydro-pneumatic suspension system provide hydraulic system pressure and vehicle attitude information, the hydraulic system pressure and the vehicle attitude information are fed back to a suspension controller, the controller drives an oil pump 15, a main valve 21 and a vehicle attitude valve 22 to compress a piston in the hydro-pneumatic spring, so that gas in a container is compressed, the compressed gas can generate a reaction force to push the piston in the hydro-pneumatic spring 12 downwards to generate plastic deformation due to the compressibility of the gas, when the gas is compressed to a certain degree, liquid starts to be compressed, the piston can continuously move downwards due to the incompressibility of the liquid, so that the reaction force is generated, the spring continuously generates elastic deformation, and the oil flows back to an oil tank 20 through a flexible oil pipe 11 and an oil pressure I steel pipe 14, so that the vehicle descends to the designed height;
When the height of the vehicle is lower than the height which is originally set, the gas in the hydro-pneumatic spring is compressed, the pressure sensor, the angular displacement sensor and the like of the hydro-pneumatic suspension system provide hydraulic system pressure and vehicle posture information, the information is fed back to the suspension controller, the controller drives the oil pump 15, the main valve 21 and the vehicle posture valve 22 to release the gas in the hydro-pneumatic spring, and when the gas is released to a certain degree, the oil flows back into the hydro-pneumatic spring from the oil tank 20 through the flexible oil pipe 11 and the oil pressure I steel pipe 14, so that the vehicle is lifted to the designed height.
The ball heads are designed at the connecting ends of the left guide arm assembly 2 and the right guide arm assembly 7 and the suspension bracket 1, the rubber ball shafts are designed inside, and the rubber ball shafts deform correspondingly along with the rising and the falling of the vehicle, so that the change of the vehicle posture is realized.
The straight push rod 4 is provided with a ball head end, the ball head end is connected with the straight push rod support 3 and the straight push rod bridge upper support 10, the ball head end is provided with a rubber ball shaft, and the rubber ball shaft can correspondingly deform along with the rising and the falling of a vehicle, so that the change of the vehicle posture is realized.
The utility model can not only improve the travelling comfort of the vehicle, but also increase the bearing capacity of the vehicle, is used in heavy-duty vehicle types, improves the travelling comfort, smoothness and reliability of the vehicle, and can also realize the free lifting of a single bridge or a double bridge.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic illustration of a suspension structure of the present utility model;
Fig. 3 is a schematic diagram of a hydraulic control system of the present utility model.
Detailed Description
The main body structure of the system is shown in figure 1. The main body structure consists of a suspension structural member and a control system. The suspension structure is shown in fig. 2, and the control system portion is shown in fig. 3.
The suspension structure is shown in fig. 2, and mainly comprises a suspension bracket 1, a guide arm assembly left 2, a straight push rod support 3, a straight push rod 4, an oil cylinder I upper bracket 5, an oil cylinder II upper bracket 6, a guide arm assembly right 7, an oil cylinder lower bracket right 8, an oil cylinder lower bracket left 9 and a straight push rod bridge upper support 10.
The hydraulic control system is shown in fig. 3, and mainly comprises a flexible oil pipe 11, a hydro-pneumatic spring right 12, a height valve assembly 13, a hydraulic oil I steel pipe 14, an oil pump 15, a transitional flange 16, a spline shaft 17, a short flexible oil pipe 18, a long flexible oil pipe 19, an oil tank 20, a main valve 21, a vehicle posture valve 22, a hydraulic oil II steel pipe 23, a hydraulic oil III steel pipe 24 and a hydro-pneumatic spring left 25.
The suspension bracket 1 comprises 4 pieces, the left 2 piece and the right 7 piece of the guide arm assembly are respectively connected with the left 2 piece and the right 7 piece of the guide arm assembly through bolts, the rear ends of the left 2 piece and the right 7 piece of the guide arm assembly are respectively connected with a bridge (see a schematic diagram shown in fig. 1) through bolts, the straight push rod support 3 and a frame are fixed through bolts, the straight push rod 4 and the straight push rod support 3 and the straight push rod bridge upper support 10 are fixed through bolts, the upper bracket 5 of the oil cylinder I and the upper end 12 of the oil gas spring are fixed through bolts, the lower end of the right 12 piece of the oil gas spring is fixed through bolts with the right 8 piece of the oil cylinder lower bracket, the left 9 piece of the oil cylinder is fixed through bolts, the right 12 piece of the oil gas spring is respectively connected with the main valve 21 through the oil hose 11, the oil pressure I steel pipe 14 and the oil pressure II steel pipe 23, the main valve 21 is connected with the car attitude valve 22 through the oil pressure III steel pipe 24, the left 25 piece of the oil pressure I steel pipe 11 and the car attitude valve 22 are connected with the oil pressure I steel pipe 14, the rear end of the oil pump 15 is connected with the main valve 21 through the short soft oil pipe 18, the front end of the oil pump 15 is connected with the transition flange 16, the transition flange 16 is connected with the spline shaft 17 through the transition flange 16, the transition flange 15 is connected with the engine 15 through the long-length-controllable oil pipe 19 and the controller is connected with the engine in a remote controller through the length controller in a control chamber 13.
The specific operation method comprises the following steps: the height of the vehicle can be designed into a normal height value through the electric controller, and a driver can perform the operations of heightening and lowering the vehicle body through the display and control combination.
When the height of the vehicle is higher than the height of the initial setting, the pressure sensor, the angular displacement sensor and the like of the hydro-pneumatic suspension system provide hydraulic system pressure and vehicle posture information, the hydraulic system pressure and vehicle posture information are fed back to the suspension controller, the controller drives the oil pump 15, the main valve 21 and the vehicle posture valve 22 to compress the piston in the hydro-pneumatic spring, so that gas in the container is compressed, the compressed gas can generate reaction force to push down the piston in the hydro-pneumatic spring 12 to generate plastic deformation due to the compressibility of the gas, when the gas is compressed to a certain degree, liquid starts to be compressed, the compression of the liquid can enable the piston to continuously move downwards due to incompressibility of the liquid, the reaction force is generated, the spring continuously generates elastic deformation, and the oil flows back to the oil tank 20 through the flexible oil pipe 11 and the oil pressure I steel pipe 14. Thereby realizing the lowering of the vehicle to the design height.
When the height of the vehicle is lower than the height which is originally set, the gas in the hydro-pneumatic spring is compressed, the pressure sensor, the angular displacement sensor and the like of the hydro-pneumatic suspension system provide hydraulic system pressure and vehicle attitude information, the information is fed back to the suspension controller, the controller drives the oil pump 15, the main valve 21 and the vehicle attitude valve 22 to release the gas in the hydro-pneumatic spring, and when the gas is released to a certain extent, oil flows back into the hydro-pneumatic spring from the oil tank 20 through the flexible oil pipe 11 and the oil pressure I steel pipe 14. Thereby realizing the ascent of the vehicle to the design height.
Further:
The ball heads are designed at the connecting ends of the left guide arm assembly 2 and the right guide arm assembly 7 and the suspension bracket 1, the rubber ball shafts are designed inside, and the rubber ball shafts deform correspondingly along with the rising and the falling of the vehicle, so that the change of the vehicle posture is realized.
The ball head end of the straight push rod 4 is connected with the straight push rod support 3 and the straight push rod bridge upper support 10, and the ball head end is provided with a rubber ball shaft which can correspondingly deform along with the rising and the falling of the vehicle, so that the change of the vehicle posture is realized.
The utility model has the following characteristics:
1. The hydraulic control function is added on the basis of pneumatic control, so that the hydraulic control oil-gas suspension system is capable of realizing oil-gas control, is better in damping performance, has good buffering capacity and is better in anti-roll performance.
2. The rigidity of the air suspension is about 4 times or more than that of the air suspension, and the bearing performance is better. The braking distance can be shortened by about 0.5-0.6mm compared with an air suspension, the transmission performance is more stable on rough road conditions, the tire jumping quantity is smaller, and the tire loss can be reduced.
Claims (3)
1. An adjustable hydro-pneumatic suspension system of a commercial vehicle is characterized in that: the suspension structure consists of a suspension structure and a control system;
The suspension structural member comprises a suspension bracket, a left guide arm assembly, a right straight push rod support, a straight push rod, an upper bracket of an oil cylinder I, an upper bracket of an oil cylinder II, a right guide arm assembly, a right oil cylinder lower bracket, a left oil cylinder lower bracket and a straight push rod bridge upper support;
The hydraulic control system comprises a flexible oil pipe, a right oil-gas spring, a height valve assembly, an oil pressure I steel pipe, an oil pump, a transition flange, a spline shaft, a short flexible oil pipe, a long flexible oil pipe, an oil tank, a main valve, a vehicle posture valve, an oil pressure II steel pipe, an oil pressure III steel pipe and a left oil-gas spring;
The suspension bracket comprises 4 pieces, wherein the 4 pieces are respectively connected with the left guide arm assembly and the right guide arm assembly through bolts, the left guide arm assembly and the right guide arm assembly are respectively connected with a bridge through bolts, the straight push rod support is fixed with a frame through bolts, the straight push rod support and the straight push rod support are fixed with a straight push rod bridge upper support through bolts, the upper oil cylinder I bracket is fixed with the right upper oil-gas spring end through bolts, the right lower oil-gas spring end is fixed with the right oil cylinder lower bracket and the left oil cylinder lower bracket through bolts, the right oil-gas spring is respectively connected with a main valve through a soft oil pipe, an oil pressure I steel pipe and an oil pressure II steel pipe, the main valve is connected with a vehicle posture valve through an oil pressure III steel pipe, the left oil pressure spring is connected with the soft oil pipe and the oil pressure I steel pipe through a short soft oil pipe, the oil pump front end is connected with a transition flange, the transition flange is connected with a spline shaft through bolts, the other end of the oil pump is connected with an oil tank, the high valve is connected with a circuit controller end through a cable, and a display control assembly and a remote controller are arranged in a cab to adjust height;
When the height of the vehicle is higher than the height of the initial setting, the pressure sensor and the angular displacement sensor of the hydro-pneumatic suspension system provide the pressure of the hydraulic system and the gesture information of the vehicle, and the information is fed back to the suspension controller, the controller drives the oil pump, the main valve and the vehicle gesture valve to compress the piston in the hydro-pneumatic spring, so that the gas in the container is compressed, the compressed gas can generate a reaction force to push the piston in the hydro-pneumatic spring downwards to generate plastic deformation due to the compressibility of the gas, when the gas is compressed to a certain degree, the liquid starts to be compressed, the piston can continuously move downwards due to the incompressibility of the liquid, so that the reaction force is generated, the spring continuously generates elastic deformation, and the oil flows back to the oil tank through the flexible oil pipe and the oil pressure I steel pipe, so that the vehicle descends to the designed height;
when the height of the vehicle is lower than the height set initially, the gas in the hydro-pneumatic spring is compressed, the pressure sensor and the angular displacement sensor of the hydro-pneumatic suspension system provide hydraulic system pressure and vehicle attitude information, the hydraulic system pressure and the vehicle attitude information are fed back to the suspension controller, the controller drives the oil pump, the main valve and the vehicle attitude valve to release the gas in the hydro-pneumatic spring, and when the gas is released to a certain degree, the oil flows back into the hydro-pneumatic spring from the oil tank through the oil pipe and the oil pressure I steel pipe, so that the vehicle is lifted to the designed height.
2. The adjustable hydro-pneumatic suspension system for a commercial vehicle of claim 1, wherein: the ball heads are designed at the connecting ends of the left guide arm assembly and the right guide arm assembly and the suspension bracket, the rubber ball shafts are designed in the connecting ends, and the rubber ball shafts deform correspondingly along with the rising and the falling of the vehicle, so that the change of the vehicle posture is realized.
3. A commercial vehicle adjustable hydro-pneumatic suspension system as defined by claim 1 or 2 wherein: the straight push rod is provided with a ball head end, the ball head end is connected with the straight push rod support and the straight push rod bridge upper support, the ball head end is provided with a rubber ball shaft, and the rubber ball shaft can correspondingly deform along with the rising and the falling of a vehicle, so that the change of the gesture of the vehicle is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323229468.1U CN221090412U (en) | 2023-11-29 | 2023-11-29 | Adjustable oil gas suspension system of commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323229468.1U CN221090412U (en) | 2023-11-29 | 2023-11-29 | Adjustable oil gas suspension system of commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221090412U true CN221090412U (en) | 2024-06-07 |
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ID=91314416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323229468.1U Active CN221090412U (en) | 2023-11-29 | 2023-11-29 | Adjustable oil gas suspension system of commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221090412U (en) |
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2023
- 2023-11-29 CN CN202323229468.1U patent/CN221090412U/en active Active
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