CN118457128A - Hydraulic lifting system and hydraulic lifting method for automobile chassis - Google Patents
Hydraulic lifting system and hydraulic lifting method for automobile chassis Download PDFInfo
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- CN118457128A CN118457128A CN202410755256.7A CN202410755256A CN118457128A CN 118457128 A CN118457128 A CN 118457128A CN 202410755256 A CN202410755256 A CN 202410755256A CN 118457128 A CN118457128 A CN 118457128A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 49
- 239000000725 suspension Substances 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000000712 assembly Effects 0.000 claims abstract description 5
- 238000000429 assembly Methods 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims description 8
- 230000001174 ascending effect Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- B60G17/015—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 the regulating means comprising electric or electronic elements
- B60G17/016—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 the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0165—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 the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input to an external condition, e.g. rough road surface, side wind
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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
- B60G17/015—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 the regulating means comprising electric or electronic elements
- B60G17/019—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 the regulating means comprising electric or electronic elements characterised by the type of sensor or the arrangement thereof
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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
- B60G2500/30—Height or ground clearance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention belongs to the technical field of automobile control, and particularly relates to an automobile chassis hydraulic lifting system and a hydraulic lifting method; comprises a hydraulic mechanism and a lifting mechanism; the hydraulic mechanism comprises an oil storage tank and a bidirectional hydraulic pump, the oil storage tank is connected with an oil pipe, and the oil pipe is provided with the bidirectional hydraulic pump; the lifting mechanisms are respectively arranged on the front suspension and the rear suspension; the lifting mechanism comprises a hydraulic lifting rod and a spring tray, the upper end of the spring tray is contacted with the sliding column spring, and the upper end of the hydraulic lifting rod is connected with the spring tray; the oil pipe is communicated with the hydraulic lifting rod; sensor assemblies are arranged on two sides of the front suspension and the rear suspension; a gyroscope is arranged near the mass center of the whole vehicle; the controller is in signal connection with the gyroscope; the automobile chassis is adjusted according to the conditions of road conditions, different adjustments are carried out according to different road conditions, normal passing of the chassis is avoided when the automobile is in complex road conditions, wind resistance can be reduced when the automobile runs on a flat road at a high speed, and the experience of the automobile in the use process is guaranteed.
Description
Technical Field
The invention belongs to the technical field of automobile control, and particularly relates to an automobile chassis hydraulic lifting system and a hydraulic lifting method.
Background
In automotive suspension systems, vehicle passability has been an important indicator of an automobile. Generally, the good trafficability is clearly an absolute advantage of SUV vehicle models. Even though most SUVs are urban SUVs, there is some off-road capability. SUVs have absolute advantages over cars in view of road rot. However, the higher the passing performance, the higher the whole vehicle height, and the higher the vehicle speed, the greater the wind resistance. Therefore, the traditional chassis cannot give consideration to the lifting of the whole vehicle height. Secondly, more devices capable of manually adjusting the height of the vehicle appear in the after-market, but because of troublesome operation, special tools are needed to be equipped in practical use, the safety and the practicability are relatively low, and no good market demands exist. In order to solve the practical difficulties existing at present, the invention provides an automobile chassis hydraulic lifting system and a hydraulic lifting method.
Disclosure of Invention
The invention provides an automobile chassis hydraulic lifting system, which comprises a front suspension, a rear suspension, a hydraulic mechanism, a lifting mechanism and a controller, wherein the hydraulic mechanism comprises an oil storage tank and a bidirectional hydraulic pump, the oil storage tank is connected with an oil pipe, and the oil pipe is provided with the bidirectional hydraulic pump; the lifting mechanisms are respectively arranged on the front suspension and the rear suspension; the lifting mechanism comprises a hydraulic lifting rod and a spring tray, wherein the upper end of the spring tray is in contact with the sliding column spring, and the upper end of the hydraulic lifting rod is connected with the spring tray; the oil pipe is communicated with the hydraulic lifting rod; sensor assemblies are arranged on two sides of the front suspension and the rear suspension; a gyroscope is arranged near the mass center of the whole vehicle; the controller is in signal connection with the gyroscope.
Further, the hydraulic lifting rod comprises a lower base and a hydraulic cylinder, and a plurality of lower bases are respectively arranged on the front suspension and the rear suspension; the lower end of the hydraulic cylinder is arranged in the lower base, and the upper end of the hydraulic cylinder is connected with the spring tray; an upper oil path channel and a lower oil path channel are formed in the lower base; the upper oil path channel and the lower oil path channel are communicated with the hydraulic cylinder.
Further, the hydraulic cylinder comprises a cylinder body, a first oil inlet is formed in the side wall of the upper end of the cylinder body, and a second oil inlet is formed in the side wall of the lower end of the cylinder body; the first oil inlet is communicated with the upper oil path channel, and the second oil inlet is communicated with the lower oil path channel; the cylinder body is internally connected with a piston in a sliding manner, the upper end of the piston is connected with a push rod, and the push rod is connected with a spring tray.
Further, the front suspension comprises a front auxiliary frame and a front lower swing arm, and the rear suspension comprises a rear auxiliary frame and a rear lower swing arm; the sensor assembly comprises a height sensor, a guide rod and a wire harness socket; the height sensors are respectively arranged on the front auxiliary frame and the rear auxiliary frame; the outer part of the height sensor is connected with a guide rod, and the other end of the guide rod is respectively connected with a front lower swing arm and a rear lower swing arm; the height sensor is connected with the controller through a wire harness socket.
Further, the controller transmits the height signal change to the vehicle-mounted large screen.
Further, the gyroscope and the height sensor calculate four-wheel height difference and deviation direction.
Further, two-way hydraulic valves are arranged at positions of the oil pipe close to each of the upper oil path and the lower oil path.
Further, the number of the hydraulic cylinders included in the hydraulic lifting rod is more than or equal to 2.
The invention provides a hydraulic lifting method of an automobile chassis, which is suitable for the hydraulic lifting system of the automobile chassis, which is defined in any one of claims 1-8, and comprises the following steps:
The ascending input signal is transmitted to the controller by pressing the key, the controller calculates the required oil pressure, the signal is input into the bidirectional hydraulic pump, the bidirectional hydraulic pump pumps the oil into the bidirectional hydraulic valve through the oil pipe by the oil storage tank, the bidirectional hydraulic valve is pressurized to the bottom of the hydraulic cylinder by the lower oil path channel, the oil pushes the piston to move upwards, and the piston drives the ejector rod to eject the spring tray, so that the chassis is lifted;
The descending input signal is transmitted to the controller through the key, the controller calculates the required oil pressure, the signal is input into the bidirectional hydraulic pump, the bidirectional hydraulic pump pumps the oil into the bidirectional hydraulic valve through the oil pipe by the oil storage tank, the bidirectional hydraulic valve is pressurized to the upper end of the hydraulic cylinder through the upper oil path channel, the oil pushes the piston to move downwards, the piston drives the ejector rod to jack the spring tray in, and the descending of the chassis is realized.
Further, arranging a gyroscope near the mass center of the whole vehicle, when the vehicle is stationary on an uneven road surface, enabling the gyroscope to originally rotate a center shaft to move to generate an included angle, sending a position signal of the included angle to a controller by the gyroscope, and detecting height information by combining a height sensor by the controller; calculating the height difference of the position in the height information and the swing angle of the gyroscope; and obtaining the stroke of the required movement of the hydraulic cylinder.
According to the hydraulic lifting system, the height of the automobile chassis is adjusted according to the condition of road conditions, different adjustments are carried out according to different road conditions, normal passing of chassis collision is avoided when the road conditions are complicated, wind resistance can be reduced when the automobile runs on a flat road at a high speed, and the experience of the automobile in the use process is guaranteed.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the mounting position of a front suspension and a lifting mechanism in an embodiment of the invention.
FIG. 2 illustrates a schematic view of the mounting location of the rear suspension and the lifting mechanism in an embodiment of the present invention.
Fig. 3 shows a schematic structural diagram of a lifting mechanism in an embodiment of the present invention.
Fig. 4 shows a schematic structural diagram of a hydraulic cylinder in an embodiment of the present invention.
Fig. 5 shows a schematic structural diagram of a front suspension and sensor assembly in an embodiment of the present invention.
Fig. 6 shows a schematic view of a hydraulic mechanism in an embodiment of the invention.
In the figure, 1, front suspension; 2. a rear suspension; 30. a hydraulic mechanism; 40. a lifting mechanism; 301. an oil storage tank; 302. a two-way hydraulic pump; 303. an oil pipe; 401. a hydraulic lifting rod; 402. a spring tray; 6. a controller; 701. a height sensor; 702. a guide rod; 703. wire harness sockets; 70. a sensor assembly; 8. a gyroscope; 4011. a lower base; 4012. a hydraulic cylinder; 4013. an upper oil path channel; 4014. a lower oil path channel; 40121. a cylinder; 40122. a first oil inlet; 40123. a second oil inlet; 40124. a piston; 40125. a push rod; 11. a front subframe; 12. a front lower swing arm; 21. a rear subframe; 22. a rear lower swing arm; 9. a two-way hydraulic valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The application provides an automobile chassis hydraulic lifting system, which comprises a front suspension 1, a rear suspension 2, a hydraulic mechanism 30, a lifting mechanism 40 and a controller 6, wherein the hydraulic mechanism 30 comprises an oil storage tank 301 and a bidirectional hydraulic pump 302, the oil storage tank 301 is connected with an oil pipe 303, and the oil pipe 303 is provided with the bidirectional hydraulic pump 302; a plurality of the lifting mechanisms 40 are respectively mounted on the front suspension 1 and the rear suspension 2; the lifting mechanism 40 includes a hydraulic lifting rod 401 and a spring tray 402, wherein the upper end of the spring tray 402 is in contact with a strut spring, and the upper end of the hydraulic lifting rod 401 is connected with the spring tray 402; the oil pipe 303 communicates with the hydraulic lifting lever 401; sensor assemblies 70 are mounted on both sides of the front suspension 1 and the rear suspension 2; a gyroscope 8 is arranged near the center of mass of the whole vehicle; the controller 6 is connected to the gyroscope 8 in a signal manner.
Fig. 3 shows that the hydraulic lifting lever 401 includes a lower base 4011 and a hydraulic cylinder 4012, and a plurality of the lower bases 4011 are respectively mounted on the front suspension 1 and the rear suspension 2; the lower end of the hydraulic cylinder 4012 is installed in the lower base 4011, and the upper end of the hydraulic cylinder 4012 is connected with a spring tray 402; an upper oil path 4013 and a lower oil path 4014 are formed on the lower base 4011; the upper oil passage 4013 and the lower oil passage 4014 communicate with the hydraulic cylinder 4012.
Fig. 4 shows that the hydraulic cylinder 4012 includes a cylinder body 40121, a first oil inlet 40122 is formed on an upper side wall of the cylinder body 40121, and a second oil inlet 40123 is formed on a lower side wall of the cylinder body 40121; the first oil inlet 40122 is communicated with the upper oil path 4013, and the second oil inlet 40123 is communicated with the lower oil path 4014; a piston 40124 is slidably connected to the inside of the cylinder 40121, an upper end of the piston 40124 is connected to a jack 40125, and the jack 40125 is connected to the spring tray 402.
A two-way hydraulic valve 9 is provided at a position of the oil pipe 303 near each of the upper oil passage 4013 and the lower oil passage 4014.
The number of hydraulic cylinders 4012 included in the hydraulic lift rod 401 is equal to or greater than 2.
The gyroscope 8 calculates a four-wheel altitude difference and a deviation direction from the altitude sensor 701.
Referring to fig. 1,2, 3, fig. 1 shows a front suspension 1, on both sides of the front suspension 1 there are strut springs, wherein the position a is the mounting position of the lifting mechanism 40; fig. 2 shows the rear suspension 2 with strut springs on both sides of the rear suspension 2, wherein the position B is the mounting position of the lifting mechanism 40;
In the implementation process, when the chassis height needs to be raised according to different road conditions, a user presses a key for raising the chassis in the vehicle body, the longer the key is, the longer the lifting time is, and the lifting time is until the limit value of lifting is reached; the controller 6 is an ECU controller 6, the ECU controller 6 inputs an oil pressure signal required to be lifted to a designated height into the bidirectional hydraulic pump 302 according to the duration of a key, the bidirectional hydraulic pump 302 pumps the oil into the bidirectional hydraulic valve 9 through the oil storage tank 301 and the oil pipe 303, the oil enters the cylinder 40121 from the second oil inlet 40123 at the lower end of the hydraulic cylinder 4012 through the lower oil path channel 4014 on each hydraulic lifting rod 401 through the bidirectional hydraulic valve 9, the piston 40124 is pushed upwards by the oil, the piston 40124 drives the ejector rod 40125 to move outwards of the cylinder 40121, the ejector rod 40125 drives the spring tray 402 to eject, and the chassis lifting effect is realized;
When the height of the chassis needs to be reduced, for example, when a highway with good road conditions runs, the wind resistance can be reduced by reducing the chassis; the user presses a key for descending the chassis in the vehicle body, and the longer the key is, the longer the descending time is until the descending limit value is reached; the ECU controller 6 inputs an oil pressure signal required for descending to a designated height into the bidirectional hydraulic pump 302 according to the duration of a key, the bidirectional hydraulic pump 302 pumps oil into the bidirectional hydraulic valve 9 through an oil tank 301 and an oil pipe 303, then the oil enters the cylinder 40121 from a first oil inlet 40122 at the upper end of a hydraulic cylinder 4012 through an upper oil path channel 4013 on each hydraulic lifting rod 401 through the bidirectional hydraulic valve 9, a piston 40124 is pushed to move downwards by the oil, a piston 40124 drives a push rod 40125 to move inwards the cylinder 40121, and the push rod 40125 drives a spring tray 402 to descend, so that the effect of chassis descending is realized;
When the gyroscope 8 is on an uneven road surface, the original rotation center shaft of the gyroscope 8 moves to form a certain included angle with the original rotation center shaft, and the front and rear gestures are calculated by combining the height values measured by the position sensor assemblies 70 and the swing angles of the gyroscope 8; the ECU controller 6 obtains the position of the hydraulic lifting rod 401 required to move and the stroke of the hydraulic lifting rod 401 required to move and the magnitude of the hydraulic pressure required to be supplied through the input signals of the height sensor 701 and the gyroscope 8; the ECU controller 6 inputs a required oil pressure signal to the two-way hydraulic pump 302 and a corresponding position to the corresponding two-way hydraulic valve 9; the bidirectional hydraulic pump 302 pumps oil into the corresponding bidirectional hydraulic valve 9 through the oil storage tank 301 and the oil pipe 303, the bidirectional hydraulic valve 9 at the position is opened, so that the oil enters the corresponding lower oil path 4014 through the bidirectional hydraulic valve 9, and the oil enters the cylinder 40121 from the second oil inlet 40123, so that the hydraulic lifting rod 401 lifts the spring tray 402, and lifting is realized; the bidirectional hydraulic valve 9 is closed when the corresponding cylinder 40121 reaches a preset pressure, and the oil path is closed;
A plurality of hydraulic cylinders 4012 are arranged in the hydraulic lifting rod 401, so that the running stability of the hydraulic lifting system is ensured.
According to the hydraulic lifting system, the height of the automobile chassis is adjusted according to the condition of road conditions, different adjustments are carried out according to different road conditions, normal passing of chassis collision is avoided when the road conditions are complicated, wind resistance can be reduced when the automobile runs on a flat road at a high speed, and the experience of the automobile in the use process is guaranteed.
In an embodiment of the present disclosure, referring to fig. 5, a front suspension 1 is taken as an example in fig. 5, the front suspension 1 includes a front subframe 11 and a front lower swing arm 12, and the rear suspension 2 includes a rear subframe 21 and a rear lower swing arm 22; the sensor assembly 70 includes a height sensor 701, a guide bar 702, and a harness socket 703; the height sensors 701 are mounted on the front sub-frame 11 and the rear sub-frame 21, respectively; the outside of the height sensor 701 is connected with a guide rod 702, and the other end of the guide rod 702 is respectively connected with the front lower swing arm 12 and the rear lower swing arm 22; the height sensor 701 is connected to the controller 6 through a harness socket 703.
The controller 6 transmits the height signal change to the vehicle-mounted large screen.
The gyroscope 8 calculates a four-wheel altitude difference and a deviation direction from the altitude sensor 701.
In the implementation process, the height sensors 701 are respectively arranged on the left side and the right side of the front auxiliary frame 11 and the rear auxiliary frame 21, when the front suspension 1 or the rear suspension 2 of the vehicle drives the swing arm to move, the lower swing arm drives the guide rod 702 to move, and the height sensors 701 are fixed on the front auxiliary frame 11 and the rear auxiliary frame 21, so that the angle between the guide rod 702 and the lower swing arm changes, the height sensors 701 transmit the angle change to the ECU controller 6 through the wire harness socket 703, and the ECU controller 6 combines the swing angle information transmitted by the gyroscope 8 to realize accurate control of the height of the vehicle body and a suspension system;
In the process of pressing the key to lift or descend, the controller 6 transmits the elevation change of the chassis lifting or descending corresponding to the duration of pressing the key to the vehicle-mounted large screen; the user can intuitively know the ascending or descending height change of the chassis; for example, a bar graph structure is displayed on a vehicle-mounted large screen, the lowermost end of the bar graph is a descending limit value, the uppermost end of the bar graph is a lifting limit value, and the middle change of the bar graph is a change form of lifting or descending of the chassis, so that a user in the automobile can more intuitively know the lifting degree of the chassis of the external automobile, and the height of the chassis of the automobile can be more accurately adjusted.
The application provides a hydraulic lifting method of an automobile chassis, which is suitable for any one of the hydraulic lifting systems of the automobile chassis, and comprises the following steps:
Referring to fig. 6, by pressing a key to transmit an ascending input signal to the controller 6, the controller 6 calculates a required oil pressure, the signal is input into the bidirectional hydraulic pump 302, the bidirectional hydraulic pump 302 pumps the oil into the bidirectional hydraulic valve 9 through the oil storage tank 301 and the oil pipe 303, the bidirectional hydraulic valve 9 is pressurized to the bottom of the hydraulic cylinder 4012 through the lower oil path 4014, the oil pushes the piston 40124 to move upwards, the piston 40124 drives the ejector rod 40125 to eject the spring tray 402, and the lifting effect is realized;
The descending input signal is transmitted to the controller 6 through the key, the controller 6 calculates the required oil pressure, the signal is input into the bidirectional hydraulic pump 302, the bidirectional hydraulic pump 302 pumps the oil into the bidirectional hydraulic valve 9 through the oil storage tank 301 and the oil pipe 303, the bidirectional hydraulic valve 9 is pressurized to the upper end of the hydraulic cylinder 4012 through the upper oil path 4013, the oil pushes the piston 40124 to move downwards, the piston 40124 drives the ejector rod 40125 to push the spring tray 402 in, and the descending effect is achieved.
The gyroscope 8 is arranged near the center of mass of the whole vehicle, when the vehicle is stationary on an uneven road surface, the gyroscope 8 moves along the original rotation center axis to generate an included angle, the gyroscope 8 sends a position signal of the included angle to the controller 6, and the controller 6 combines the height information detected by the height sensor 701; calculating the height difference of the four tire positions in the height information and the swing angle of the gyroscope 8; the stroke of the required movement of the hydraulic cylinder 4012 is derived.
After the lifting signal is obtained, the oil in the oil storage tank 301 flows through the oil pipe 303, the oil flows to the bidirectional hydraulic pump 302, and the oil is conveyed to the positions of the respective bidirectional hydraulic valves 9 through the oil pipe 303 by the bidirectional hydraulic pump 302; when the whole chassis needs to be lifted, oil flows into the hydraulic cylinder 4012 from the lower oil path 4014 through the second oil inlet 40123 in the flow direction of lifting oil through each two-way hydraulic valve 9, and the hydraulic cylinder 4012 is driven to lift to realize the lifting of the chassis of the automobile; when the whole chassis needs to descend, oil flows into the hydraulic cylinder 4012 from the upper oil path 4013 through the first oil inlet 40122 in the flow direction of descending oil through each two-way hydraulic valve 9, and drives the hydraulic cylinder 4012 to descend so as to realize the descent of the chassis of the automobile; when the hydraulic lifting rod 401 is positioned on an uneven road surface, the oil pressure needs to be input to part of the hydraulic lifting rod 401, and then the bidirectional hydraulic valve 9 at the corresponding position is opened, so that the oil enters, and lifting or descending of the hydraulic lifting rod 401 at the corresponding position is realized.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The hydraulic lifting system of the automobile chassis comprises a front suspension (1) and a rear suspension (2) and is characterized by further comprising a hydraulic mechanism (30), a lifting mechanism (40) and a controller (6), wherein the hydraulic mechanism (30) comprises an oil storage tank (301) and a bidirectional hydraulic pump (302), the oil storage tank (301) is connected with an oil pipe (303), and the oil pipe (303) is provided with the bidirectional hydraulic pump (302); a plurality of lifting mechanisms (40) are respectively arranged on the front suspension (1) and the rear suspension (2); the lifting mechanism (40) comprises a hydraulic lifting rod (401) and a spring tray (402), wherein the upper end of the spring tray (402) is in contact with a sliding column spring, and the upper end of the hydraulic lifting rod (401) is connected with the spring tray (402); the oil pipe (303) is communicated with the hydraulic lifting rod (401); sensor assemblies (70) are arranged on two sides of the front suspension (1) and the rear suspension (2); a gyroscope (8) is arranged near the center of mass of the whole vehicle; the controller (6) is in signal connection with the gyroscope (8).
2. The hydraulic lifting system of an automobile chassis according to claim 1, characterized in that the hydraulic lifting lever (401) comprises a lower base (4011) and a hydraulic cylinder (4012), a plurality of the lower bases (4011) being mounted on the front suspension (1) and the rear suspension (2), respectively; the lower end of the hydraulic cylinder (4012) is arranged in the lower base (4011), and the upper end of the hydraulic cylinder (4012) is connected with the spring tray (402); an upper oil path (4013) and a lower oil path (4014) are formed in the lower base (4011); the upper oil passage (4013) and the lower oil passage (4014) are communicated with the hydraulic cylinder (4012).
3. The hydraulic lifting system of the automobile chassis according to claim 2, wherein the hydraulic cylinder (4012) comprises a cylinder body (40121), a first oil inlet (40122) is formed in the upper end side wall of the cylinder body (40121), and a second oil inlet (40123) is formed in the lower end side wall of the cylinder body (40121); the first oil inlet (40122) is communicated with the upper oil path channel (4013), and the second oil inlet (40123) is communicated with the lower oil path channel (4014); the cylinder body (40121) is internally connected with a piston (40124) in a sliding mode, the upper end of the piston (40124) is connected with a push rod (40125), and the push rod (40125) is connected with a spring tray (402).
4. A hydraulic lifting system for a chassis of a vehicle according to claim 3, characterized in that the front suspension (1) comprises a front subframe (11) and a front lower swing arm (12), and the rear suspension (2) comprises a rear subframe (21) and a rear lower swing arm (22); the sensor assembly (70) comprises a height sensor (701), a guide rod (702) and a wire harness socket (703); the height sensor (701) is respectively arranged on the front auxiliary frame (11) and the rear auxiliary frame (21); the height sensor (701) is externally connected with a guide rod (702), and the other end of the guide rod (702) is respectively connected with a front lower swing arm (12) and a rear lower swing arm (22); the height sensor (701) is connected with the controller (6) through a wire harness socket (703).
5. An automotive chassis hydraulic lifting system according to claim 4, characterized in that the controller (6) transmits the height signal change to the on-board large screen.
6. The hydraulic lifting system for the chassis of a vehicle according to claim 5, characterized in that the gyroscope (8) and the height sensor (701) calculate the four-wheel difference in height and the direction of deviation.
7. The hydraulic lifting system of an automobile chassis according to claim 6, characterized in that a two-way hydraulic valve (9) is provided at a position of the oil pipe (303) near each of the upper oil passage (4013) and the lower oil passage (4014).
8. The hydraulic lifting system for an automobile chassis according to claim 7, wherein the number of the hydraulic cylinders (4012) included in the hydraulic lifting lever (401) is equal to or greater than 2.
9. A hydraulic lifting method for an automobile chassis is characterized by comprising the following steps of: the method is applicable to an automotive chassis hydraulic lifting system according to any one of claims 1-8 and comprises the steps of:
The ascending input signal is transmitted to the controller (6) by pressing a key, the controller (6) calculates the required oil pressure, the signal is input into the bidirectional hydraulic pump (302), the bidirectional hydraulic pump (302) pumps the oil into the bidirectional hydraulic valve (9) through the oil storage tank (301) and the oil pipe (303), the bidirectional hydraulic valve (9) is pressurized to the bottom of the hydraulic cylinder (4012) through the lower oil path channel (4014), the oil pushes the piston (40124) to move upwards, and the piston (40124) drives the ejector rod (40125) to eject the spring tray (402) so as to realize the lifting of the chassis;
The descending input signal is transmitted to the controller (6) through the key, the controller (6) calculates the required oil pressure, the signal is input into the bidirectional hydraulic pump (302), the bidirectional hydraulic pump (302) pumps the oil into the bidirectional hydraulic valve (9) through the oil storage tank (301) and the oil pipe (303), the bidirectional hydraulic valve (9) is pressurized to the upper end of the hydraulic cylinder (4012) through the upper oil path channel (4013), the oil pushes the piston (40124) to move downwards, and the piston (40124) drives the ejector rod (40125) to jack the spring tray (402) in, so that the chassis descends.
10. The hydraulic lifting method of an automobile chassis according to claim 9, wherein a gyroscope (8) is arranged near the center of mass of the whole automobile, when the automobile is stationary on an uneven road surface, an included angle is generated by the movement of an original rotation center axis of the gyroscope (8), the gyroscope (8) sends a position signal of the included angle to a controller (6), and the controller (6) combines the height information detected by the height sensor (701); calculating the height difference of the position in the height information and the swing angle of the gyroscope (8); the stroke of the required movement of the hydraulic cylinder 4012 is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410755256.7A CN118457128A (en) | 2024-06-12 | 2024-06-12 | Hydraulic lifting system and hydraulic lifting method for automobile chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410755256.7A CN118457128A (en) | 2024-06-12 | 2024-06-12 | Hydraulic lifting system and hydraulic lifting method for automobile chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118457128A true CN118457128A (en) | 2024-08-09 |
Family
ID=92159415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410755256.7A Pending CN118457128A (en) | 2024-06-12 | 2024-06-12 | Hydraulic lifting system and hydraulic lifting method for automobile chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118457128A (en) |
-
2024
- 2024-06-12 CN CN202410755256.7A patent/CN118457128A/en active Pending
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