CN106740737B - Auxiliary vehicle rollover judging and universal wheel automatic rollover preventing device - Google Patents
Auxiliary vehicle rollover judging and universal wheel automatic rollover preventing device Download PDFInfo
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- CN106740737B CN106740737B CN201710175634.4A CN201710175634A CN106740737B CN 106740737 B CN106740737 B CN 106740737B CN 201710175634 A CN201710175634 A CN 201710175634A CN 106740737 B CN106740737 B CN 106740737B
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- vehicle
- control unit
- electronic control
- rollover
- gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/14—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring
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Abstract
The utility model provides an auxiliary vehicle is turned on one's side and is judged and automatic anti-device of turning on one's side of universal wheel, includes the focus detection device that can gather vehicle focus position in real time, and focus detection device sends the detection signal to ECU electronic control unit, and ECU electronic control unit's signal output part connects the actuating mechanism that can adjust the automobile body left and right sides height; the actuating mechanism comprises telescopic shafts symmetrically arranged at the left side and the right side of the frame and driven by hydraulic cylinders, and universal wheels are arranged at the bottoms of the telescopic shafts; the hydraulic cylinder is connected with the hydraulic pump, and an electromagnetic valve connected with the ECU electronic control unit is arranged on the connecting pipeline. The gravity center detection device is arranged between the axle and the frame and is positioned in a longitudinal vertical symmetrical plane of the vehicle body. The invention collects the gravity center position of the vehicle in real time, and when the vehicle is in rollover danger, the telescopic shaft on the inclined side is controlled to extend, so that the gravity center is restored to a normal state, and the reaction is sensitive.
Description
Technical Field
The invention relates to a vehicle structure, in particular to an auxiliary vehicle rollover judging and universal wheel automatic rollover preventing device.
Background
In the running process of the vehicle, dangerous conditions such as sideslip, rollover and the like are easy to occur under the influence of natural factors such as uneven load distribution, over-high speed in turning, road surface inclination or wind power and the like, and the probability of rollover risks is higher when the large and medium-sized trucks run at high speed due to large volumes and high gravity centers. In order to reduce the accident caused by the rollover of the automobile in the running process, the conventional automatic rollover prevention device for the automobile, such as a multifunctional rollover determination system for the automobile and an automatic rollover prevention device (with the publication number of CN 102092374A), discloses a left-right telescopic shaft type rollover prevention device, which can extend a telescopic shaft to the left side or the right side respectively when controlling the rollover of the automobile.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an auxiliary vehicle rollover judging and universal wheel automatic rollover preventing device which can automatically detect whether a vehicle is in rollover danger or not and correct the vehicle in time.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the vehicle center-of-gravity detection device is capable of collecting the center-of-gravity position of a vehicle in real time, the center-of-gravity detection device sends detection signals to an ECU (electronic control unit), and a signal output end of the ECU is connected with an executing mechanism capable of adjusting the heights of the left side and the right side of a vehicle body; the actuating mechanism comprises telescopic shafts symmetrically arranged at the left side and the right side of the frame and driven by hydraulic cylinders, and universal wheels are arranged at the bottoms of the telescopic shafts; the hydraulic cylinder is connected with the hydraulic pump, and an electromagnetic valve connected with the ECU electronic control unit is arranged on the connecting pipeline.
The gravity center detection device is arranged between the axle and the frame and is positioned in a longitudinal vertical symmetrical plane of the vehicle body.
The gravity center detection device comprises a gravity center offset pointer and a sensor.
The bottom of the frame is provided with a fixed shaft in parallel with the direction of the vehicle body through a bracket, a telescopic shaft driven by a hydraulic cylinder is sleeved on the fixed shaft and can rotate around the fixed shaft, and the telescopic shaft is always vertical relative to the ground under the action of gravity.
The universal wheel is fixed on the rotating shaft through the universal wheel shaft, and the rotating shaft is fixed in a fixed bearing plate below the telescopic shaft in interference fit with the bearing. The ECU electronic control unit is also respectively connected with the liquid crystal display module and the voice prompt module.
The ECU electronic control unit is connected with the system setting circuit.
Compared with the prior art, the invention has the following beneficial effects: the center of gravity position of the vehicle is acquired in real time through the center of gravity detection device, the ECU electronic control unit compares the acquired signals with a set threshold range, and when the vehicle is in rollover danger, the telescopic shaft on the inclined side is controlled to extend, so that the center of gravity is restored to a normal state, and the response is sensitive. The detection and control process of the device can be automatically completed without manual operation, and when the rollover danger is eliminated, the telescopic shaft automatically retracts and resets, so that the device is intelligent and reliable. The telescopic shaft of the device only stretches in the vertical plane of the vehicle, so that the running of the past vehicle is not hindered, and the running safety of the vehicle is improved. In addition, when the vehicle breaks down, such as when changing the child, can adjust the telescopic shaft of corresponding side and stretch out and draw back through the device and needn't use the jack, be convenient for the maintenance of vehicle. The invention can assist in adjusting the gravity center of the vehicle when the vehicle drives into a bigger curve, prevent the vehicle from driving away from the curve due to overlarge centrifugal force, and can fight for a certain time for a driver and passengers to escape when dangerous accidents occur by installing the vehicle at a position close to the middle front part of the vehicle, thereby saving lives and properties and having strong practicability.
Furthermore, the universal wheels are arranged at the bottom of the telescopic shaft, the fixed shaft is arranged at the bottom of the frame in parallel with the direction of the vehicle body through the support, the telescopic shaft driven by the hydraulic cylinder is sleeved on the fixed shaft and can rotate around the fixed shaft, the universal wheels can rotate 360 degrees, the telescopic shaft is always vertical to the ground under the action of gravity, and when the vehicle runs into an emergency, the vehicle can be prevented from side turning over, and casualties and unnecessary losses are reduced.
Drawings
FIG. 1 is a schematic block diagram of an apparatus of the present invention;
FIG. 2 is a schematic diagram of the assembled structure of the device of the present invention;
FIG. 3a is a side view of the present invention mounted on a four-wheeled vehicle;
FIG. 3b is a bottom view of the invention mounted to a four-wheeled vehicle;
FIG. 4a is an assembled elevation view of the actuator of the present invention;
FIG. 4b is an assembled side view of the actuator of the present invention;
FIG. 5a is a schematic view of the invention in a state in which the vehicle is prevented from rolling over to the left;
FIG. 5b is a schematic view of the invention in a state in which the vehicle is prevented from rolling over to the right;
FIG. 5c is a schematic diagram of the present invention in a servo state;
in the accompanying drawings: 1-front center of gravity offset pointer and sensor; 2-rear center of gravity offset pointer and sensor; a 3-liquid crystal display module; 4-ECU electronic control unit; 5-left side actuator; 6-right side actuator; 7-a voice prompt module; 8-a frame; 9-left front wheel; 10-right front wheel; 11-an elastic element; 12-front axle; 13-left rear wheel; 14-right rear wheel; 15-rear axle; 16-a fixed shaft; 17-a hydraulic cylinder; 18-left telescopic shaft; 19-right telescopic shaft; 20-fixing a bearing plate; 21-a rotation axis; 22-universal wheel axle; 23-left universal wheels; 24-right universal wheels; 25-electromagnetic valve; 26-hydraulic pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the automatic rollover prevention device comprises a gravity center detection device capable of collecting the gravity center position of a vehicle in real time, wherein the gravity center detection device sends detection signals to an ECU electronic control unit 4, and a signal output end of the ECU electronic control unit 4 is connected with an executing mechanism capable of adjusting the heights of the left side and the right side of the vehicle body; the gravity center detecting device includes a gravity center shift pointer and a sensor. The ECU electronic control unit 4 is connected with a system setting circuit, and the output end of the ECU electronic control unit is also respectively connected with the liquid crystal display module 3 and the voice prompt module 7.
Referring to fig. 2, a conventional four-wheeled vehicle is exemplified, including a front axle and a rear axle.
The vehicle is provided with two axles, the number of gravity center offset pointers and sensors is two, the gravity center offset pointers and sensors are all positioned in the longitudinal vertical symmetrical plane of the vehicle, the front gravity center offset pointers and sensors 1 are arranged between the vehicle frame 8 and the front vehicle axle 12 and are perpendicular to the front vehicle axle 12 and the frame 8, and the rear gravity center offset pointers and sensors 2 are arranged between the frame 8 of the vehicle and the rear vehicle axle 15 and are perpendicular to the rear vehicle axle 15 and the frame 8 of the vehicle. The output ends of the sensors are respectively and correspondingly connected to the input ends of the ECU electronic control unit 4, the gravity center offset pointers are used for detecting the left and right gravity center offset of the vehicle, the offset signals are transmitted to the ECU electronic control unit 4 through the sensors, and the CPU (central processing unit) in the ECU electronic control unit 4 processes and transforms to give a reference value of the offset degree of the vehicle.
The system is connected with an executing mechanism, and the executing mechanism is used for preventing the vehicle from turning on one's side. The execution mechanism is connected with the ECU electronic control unit 4 and is controlled by the ECU electronic control unit, the rollover prevention device at least comprises one execution mechanism, the number of the execution mechanisms is set according to the length of the frame and the verification load of the vehicle, and each execution mechanism comprises a left execution mechanism 5 and a right execution mechanism 6 which are arranged on the frame of the vehicle and are symmetrically arranged. Referring to fig. 3b, the left actuating mechanism 5 and the right actuating mechanism 6 each include a hydraulic cylinder 17, a left telescopic shaft 18 and a right telescopic shaft 19 are respectively disposed below the hydraulic cylinders 17, and a rotating shaft 21 disposed below the left telescopic shaft 18 and the right telescopic shaft 19, a left universal wheel 23 and a right universal wheel 24 are fixed on the rotating shaft 21, the number of universal wheels below each telescopic shaft is two, the telescopic shafts are powered by power elements, and the telescopic shafts are controlled by power and transmission elements to perform telescopic actions, and in an initial state, the universal wheels are in contact with the ground and move forward along with the vehicle.
Specifically, as shown in fig. 4a and 4b, the upper terminal of the telescopic shaft is fixed on the frame through a fixed shaft 16, and can swing left and right around the fixed shaft 16, and the telescopic shaft is always vertical relative to the ground under the influence of gravity. The telescopic shaft is characterized in that a fixed bearing plate 20 is arranged below the telescopic shaft, a bearing is arranged in the fixed bearing plate 20, a rotating shaft 21 below the telescopic shaft is connected with the bearing in the fixed bearing plate 20 through interference fit, a universal wheel shaft 22 is further arranged on the rotating shaft 21, and the universal wheel is arranged on the rotating shaft 21 through the universal wheel shaft 22 and can rotate by 360 degrees.
The ECU electronic control unit 4 receives the front center of gravity shift pointer and the center of gravity shift amount of the sensor 1 and the rear center of gravity shift pointer and the sensor 2, respectively, and the CPU in the ECU electronic control unit 4 performs the following calculation:
the first step: the pointer offset amount theta 1 of the front center of gravity shifting pointer 1 mounted on the front axle of the vehicle and the pointer offset amount theta 2 of the rear center of gravity shifting pointer 2 mounted on the rear axle of the vehicle are compared with the peak value theta set by the vehicle (wherein, -theta 1, -theta 2 respectively represent the offset amounts of the center of gravity shifting pointers 1, 2 to the left; and +theta 1, +theta 2 respectively represent the offset amounts of the center of gravity shifting pointers 1, 2 to the right).
And a second step of: when the pointer offset of the front and rear gravity center offset pointers is equal to the pointer offset of the rear gravity center offset pointer, the ECU electronic control unit 4 sends out voice prompt through delay, and meanwhile, the output end also sends out a rollover prevention instruction to the actuating mechanism on the side with the large pointer offset of the rear gravity center offset pointer and the sharp increase of the pointer offset of the rear gravity center offset pointer, and the actuating mechanism acts. When the front and back pointer offsets |θ1| and |θ2| are restored within the safety range set by the system, the ECU electronic control unit 4 issues a termination rollover prevention command to make the device in a servo state.
As shown in fig. 3a and 3b, the power elements in this example comprise hydraulic pumps 26, left and right solenoid valves 25 and respective pipelines, the hydraulic pumps 26 are connected to the respective transmission elements through the respective solenoid valves 25 by the pipelines, each transmission element comprises a hydraulic cylinder 17, the hydraulic cylinders 17 are connected to the respective telescopic shafts by the pipelines, and the upper ends of the telescopic shafts are fixed to the frame 8 by the fixing shafts 16. Wherein, the output power signal wires of the left and right actuating mechanisms in the output end of the ECU electronic control unit 4 are correspondingly connected with the power signal wires of the left and right electromagnetic valves 25.
As shown in fig. 3b, the universal wheel of the telescopic shaft in the initial state rolls along with the wheels, and the track is smaller than that of the vehicle. In this example, the upper ends of the left telescopic shaft 18 and the right telescopic shaft 19 are fixed on the left inner side and the right inner side of the frame 8 through a fixed shaft 16 respectively, and are connected with the respective hydraulic cylinders 17 through hydraulic pipelines, and the hydraulic pump 26 drives the hydraulic cylinders 17 to drive the respective telescopic shafts to stretch and retract through electromagnetic valves 25. The power signal lines of the respective solenoid valves 25 are respectively connected to the power signal lines of the left and right actuators in the output of the ECU electronic control unit 4, and the ECU electronic control unit 4 controls the respective solenoid valves 25, thereby controlling the hydraulic pump 26 to output the amount of liquid to the left and right telescopic shafts to adjust the expansion and contraction of the left and right telescopic shafts.
As shown in fig. 4a and 4b, the terminal on the telescopic shaft is fixed on the frame through a fixed shaft 16, can swing left and right around the fixed shaft 16, and is influenced by gravity, and the telescopic shaft is always vertical relative to the ground. The telescopic shaft is provided with a fixed bearing plate 20 below, a bearing is arranged in the fixed bearing plate 20, a rotating shaft 21 below the telescopic shaft is connected with the bearing in the fixed bearing plate 20 in an interference fit manner, a universal wheel shaft 22 is also arranged on the rotating shaft 21, and the universal wheel is arranged on the rotating shaft 21 through the universal wheel shaft 22 and can rotate for 360 degrees. When the vehicle runs out of the way under the emergency, the vehicle can be prevented from turning on one's side.
The vehicle provided with the device of the embodiment of the invention can have the following rollover possibilities in the process of standstill or running, and the following specific descriptions are provided:
as shown in fig. 5a, when the offset amount of the vehicle center of gravity offset pointer is offset to the left to the peak value θ set by the vehicle and increases sharply, namely: the vehicle rollover judging system judges that the vehicle is rollover to the left, the electromagnetic valve 25 of the left actuating mechanism at the output end of the ECU electronic control unit 4 sends out a hydraulic pressurizing instruction to the left telescopic shaft 18, the hydraulic pump 26 presses liquid in the hydraulic cylinder 17 into the left telescopic shaft 18 through a hydraulic pipeline, and the left telescopic shaft 18 stretches to prevent the vehicle from rollover to the left.
When the offset of the gravity center offset pointer is restored to be within the safety range set by the system, namely: the output end of the ECU electronic control unit 4 sends out an instruction to the electromagnetic valve 25 of the left actuating mechanism 5, the hydraulic pump 26 stops working, the liquid in the left telescopic shaft 18 flows back to the left hydraulic cylinder 17 through a hydraulic pipeline due to the pressure of the frame, and the left telescopic shaft 18 is in a rollover prevention servo state as shown in fig. 5 c.
As shown in fig. 5b, when the shift amount of the vehicle center of gravity shift pointer shifts to the right to the peak value θ set by the vehicle and increases sharply, that is, |+θ1|Σθ or|+θ2|θθ, the vehicle rollover judging system judges that the vehicle is rollover to the right, the ECU electronic control unit 4 output end sends out a command of hydraulic pressurization to the right expansion shaft 19 to the solenoid valve 25 of the right actuator, and the hydraulic pump 26 presses the liquid in the hydraulic cylinder 17 into the right expansion shaft 19 through the hydraulic pipe, and the right expansion shaft 19 stretches to prevent the vehicle from rollover to the right.
When the offset of the gravity center offset pointer is restored to the safety range set by the system, namely, |+θ1| < θ and |+θ2| < θ, the output end of the ECU electronic control unit 4 sends a command to the solenoid valve 25 of the right actuating mechanism 6, the hydraulic pump 26 stops working, the liquid in the right telescopic shaft 19 flows back to the right hydraulic cylinder 17 through the hydraulic pipeline due to the pressure of the frame 8, and the right telescopic shaft 19 is in the rollover prevention servo state as shown in fig. 5 c.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (5)
1. An auxiliary vehicle rollover judging and universal wheel automatic rollover preventing device is characterized in that: the vehicle center-of-gravity detection device can collect the center-of-gravity position of a vehicle in real time, the center-of-gravity detection device sends detection signals to an ECU (electronic control unit) and the signal output end of the ECU (4) is connected with an executing mechanism capable of adjusting the heights of the left side and the right side of a vehicle body; the actuating mechanism comprises telescopic shafts symmetrically arranged at the left side and the right side of the frame (8) and driven by hydraulic cylinders, and universal wheels are arranged at the bottoms of the telescopic shafts; the hydraulic cylinder is connected with a hydraulic pump, and an electromagnetic valve (25) connected with the ECU electronic control unit (4) is arranged on the connecting pipeline; the bottom of the frame (8) is provided with a fixed shaft in parallel with the direction of the vehicle body through a bracket, a telescopic shaft driven by a hydraulic cylinder is sleeved on the fixed shaft and can rotate around the fixed shaft, and the telescopic shaft is always vertical relative to the ground under the action of gravity; the universal wheel is fixed on the rotating shaft through the universal wheel shaft, and the rotating shaft is fixed in the fixed bearing plate below the telescopic shaft in an interference fit manner with the bearing.
2. The auxiliary vehicle rollover determination and automatic rollover prevention device for universal wheels according to claim 1, wherein: the gravity center detection device is arranged between the axle and the frame and is positioned in a longitudinal vertical symmetrical plane of the vehicle body.
3. The auxiliary vehicle rollover determination and automatic rollover prevention device for universal wheels according to claim 1 or 2, wherein: the gravity center detection device comprises a gravity center offset pointer and a sensor.
4. The auxiliary vehicle rollover determination and automatic rollover prevention device for universal wheels according to claim 1, wherein: the ECU electronic control unit (4) is also respectively connected with the liquid crystal display module (3) and the voice prompt module (7).
5. The auxiliary vehicle rollover determination and automatic rollover prevention device for universal wheels according to claim 1, wherein: the ECU electronic control unit (4) is connected with a system setting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710175634.4A CN106740737B (en) | 2017-03-22 | 2017-03-22 | Auxiliary vehicle rollover judging and universal wheel automatic rollover preventing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710175634.4A CN106740737B (en) | 2017-03-22 | 2017-03-22 | Auxiliary vehicle rollover judging and universal wheel automatic rollover preventing device |
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| Publication Number | Publication Date |
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| CN106740737A CN106740737A (en) | 2017-05-31 |
| CN106740737B true CN106740737B (en) | 2023-10-03 |
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| CN201710175634.4A Active CN106740737B (en) | 2017-03-22 | 2017-03-22 | Auxiliary vehicle rollover judging and universal wheel automatic rollover preventing device |
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Families Citing this family (4)
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| CN109305144B (en) * | 2018-09-18 | 2023-07-14 | 华东交通大学 | Quick steering auxiliary device for vehicle |
| CN109532334A (en) * | 2019-01-11 | 2019-03-29 | 山东交通学院 | A kind of preventing vehicle rollover pro-active intervention device |
| CN112067328B (en) * | 2020-08-25 | 2022-07-05 | 华南农业大学 | Protection device for agricultural machinery field soil tank test trolley |
| CN113053130B (en) * | 2021-03-23 | 2023-06-06 | 西安黄河机电有限公司 | Method and device for early warning running risk of vehicle on bridge |
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| JPH10329682A (en) * | 1997-06-03 | 1998-12-15 | Mitsubishi Motors Corp | Turnover preventing device for vehicle |
| JPH11321266A (en) * | 1998-05-11 | 1999-11-24 | Toyota Autom Loom Works Ltd | Reach forklift truck |
| CN101003251A (en) * | 2006-01-18 | 2007-07-25 | 陈之中 | Method and equipment for preventing car from tipped over |
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| CN106740737A (en) | 2017-05-31 |
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