CN217672813U - Double-power-assisted steering system and vehicle with same - Google Patents
Double-power-assisted steering system and vehicle with same Download PDFInfo
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- CN217672813U CN217672813U CN202221689557.7U CN202221689557U CN217672813U CN 217672813 U CN217672813 U CN 217672813U CN 202221689557 U CN202221689557 U CN 202221689557U CN 217672813 U CN217672813 U CN 217672813U
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Abstract
The utility model provides a two power assisted steering system and have its vehicle. The dual assist steering system includes: a steering wheel; the steering gear is connected with the steering wheel; the electric power-assisted assembly comprises a first motor and a motor controller, wherein the motor controller is electrically connected with the first motor so as to control the operation parameters of the first motor; the hydraulic power-assisted assembly comprises an oil pump, a pipeline and an oil supply structure, wherein the oil supply structure is communicated with an input end oil port of the steering gear through the pipeline, the oil pump is arranged on the pipeline, and an output end oil port of the steering gear is communicated with the oil supply structure; the detection device is arranged on the pipeline to detect the flow speed or flow of the oil in the pipeline; when the detection value of the detection device is larger than or equal to the preset value, the hydraulic power assisting assembly is put into use; when the detection value of the detection device is smaller than the preset value, the electric power assisting assembly and the hydraulic power assisting assembly are both put into use. The utility model provides a hydraulic pressure helping hand subassembly is less and influence the problem that driver experienced to the helping hand of steering wheel under the prior art specific case.
Description
Technical Field
The utility model relates to the technical field of vehicles, particularly, relate to a two power assisted steering system and have its vehicle.
Background
At present, a hydraulic power-assisted steering system is generally adopted on a vehicle, the hydraulic power-assisted steering system generally comprises a hydraulic pump, an oil pipe, a pressure flow control valve, a transmission shaft, an oil storage tank and the like, the hydraulic power-assisted steering system works no matter whether the vehicle steers or not, and when the large steering speed is low, the hydraulic pump is required to output larger power to obtain larger power assistance.
However, under the working conditions of idling of the engine such as parking by the side and parking in a backing garage or in a low-temperature environment, the assistance provided by the hydraulic power steering system is small, and at the moment, a driver needs to make a large hand force, so that the driving experience of the driver is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a two power assisted steering system and have its vehicle to solve under the prior art specific case hydraulic pressure helping hand subassembly less and influence the problem that driver's driving experienced to the helping hand of steering wheel.
In order to achieve the above object, according to an aspect of the present invention, there is provided a dual power steering system including: a steering wheel; the steering gear is connected with the steering wheel; the electric power-assisted assembly comprises a first motor and a motor controller, wherein the motor controller is electrically connected with the first motor and is used for controlling the running state and the running parameters of the first motor; the hydraulic power-assisted assembly comprises an oil pump, a pipeline and an oil supply structure, wherein the oil supply structure is communicated with an input oil port of the steering gear through the pipeline, the oil pump is arranged on the pipeline so as to pump oil in the oil supply structure into the input oil port through the oil pump, and an output oil port of the steering gear is communicated with the oil supply structure; the detection device is arranged on the pipeline and used for detecting the flow speed or flow of the oil in the pipeline; when the detection value of the detection device is larger than or equal to a preset value, the hydraulic power assisting assembly is put into use; when the detection value of the detection device is smaller than the preset value, the electric power assisting assembly and the hydraulic power assisting assembly are both put into use.
Further, the electronic helping hand subassembly still includes: the sensor assembly is connected with the motor controller and comprises an angle sensor, a torque sensor and a speed sensor, the angle sensor is used for detecting the rotation angle of the steering wheel, the torque sensor is used for detecting the torque on the steering wheel, and the speed sensor is used for detecting the rotation speed of the wheels; wherein, the motor controller controls the rotational speed of the first motor according to the detection value of the sensor assembly.
Further, when the detection value of the torque sensor is smaller than the preset value torque value and the detection value of the speed sensor is larger than zero, the motor controller controls the first motor to rotate reversely, so that the steering wheel is automatically corrected.
Further, the dual assist steering system further includes: the connecting assembly comprises a first connecting portion, a cross shaft and a second connecting portion, the cross shaft comprises a first shaft section group and a second shaft section group which are arranged at included angles, the first connecting portion is connected with the first shaft section group, the second connecting portion is connected with the second shaft section group, the first connecting portion is connected with a steering wheel, and the second connecting portion is connected with a power input end of a steering gear.
Further, the electric power assist assembly is located between the steering wheel and the steering gear.
Further, the dual assist steering system further includes: the power supply is used for supplying power to the hydraulic power assisting assembly and the electric power assisting assembly; and the power supply is electrically connected with a power battery of the vehicle through the voltage reducer.
Further, hydraulic pressure helping hand subassembly still includes: and the second motor is in driving connection with the oil pump so as to drive the oil pump to operate, and the power supply supplies power to the second motor.
Further, the number of the second motor is one; or the number of the second motors is two, and the two second motors are respectively positioned on two sides of the oil pump.
Further, the steering gear is an electro-hydraulic steering gear.
According to another aspect of the present invention, there is provided a vehicle comprising the above-mentioned dual power steering system.
Use the technical scheme of the utility model, hydraulic pressure helping hand subassembly is connected with the steering gear to output to the steering gear and turn to the helping hand and realize hydraulic pressure helping hand. The electric power-assisted assembly is connected with the steering gear so as to output steering power-assisted force to the steering gear and realize electric power-assisted force. Therefore, the hydraulic power assisting assembly is a main power assisting source, and when the power assisting which can be provided by the hydraulic power assisting assembly reaches the limit, the electric power assisting assembly can provide certain power assisting according to the power assisting capacity corresponding to the motor capacity of the electric power assisting assembly. If under the operating mode of engine idle speed such as parking near the limit, garage entry of backing a car, because the helping hand that hydraulic power assistance subassembly provided diminishes, perhaps when the hydraulic power assistance was not enough when the low temperature needs the driver to make great hand power, electronic helping hand subassembly can supply simultaneously and provide partly helping hand and then improve driver's hand power, and then solved under the specific circumstances of prior art hydraulic power assistance subassembly less and influence driver's the problem of driving experience to the helping hand of steering wheel, promoted driver's feeling.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic perspective view of an embodiment of a dual power steering system according to the present invention;
fig. 2 shows a voltage step-down schematic of the power supply of a dual power steering system.
Wherein the figures include the following reference numerals:
10. a steering wheel;
20. a diverter;
30. an electric power assist assembly;
40. a hydraulic power-assisted assembly; 41. an oil pump; 42. a pipeline; 43. an oil supply structure;
50. a connection assembly; 51. a first connection portion; 52. a cross shaft; 53. a second connecting portion.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless otherwise specified, the use of directional words such as "upper and lower" is generally in reference to the orientation shown in the drawings, or to the vertical, perpendicular or gravitational orientation; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself, but the above directional terms are not intended to limit the present invention.
In order to solve the problem that the driving experience of a driver is influenced by the fact that the assistance of a steering wheel is small by a hydraulic power assisting assembly under the specific condition of the prior art, the application provides a double-power-assisted steering system and a vehicle with the same.
As shown in fig. 1, the dual power steering system includes a steering wheel 10, a steering gear 20, an electric assist unit 30, a hydraulic assist unit 40, and a detection device. The steering gear 20 is connected to the steering wheel 10. The electric power assist assembly 30 includes a first motor and a motor controller electrically connected to the first motor for controlling an operating state and an operating parameter of the first motor. Hydraulic pressure helping hand subassembly 40 includes oil pump 41, pipeline 42 and oil supply structure 43, and oil supply structure 43 passes through pipeline 42 and the input port intercommunication of steering gear 20, and oil pump 41 sets up on pipeline 42 to the fluid pump that will be located in oil supply structure 43 through oil pump 41 is in to the input port, and the output port and the oil supply structure 43 of steering gear 20 communicate. A sensing device is provided on the line 42 for sensing the flow rate or flow of oil in the line 42. When the detection value of the detection device is greater than or equal to the preset value, the hydraulic power assisting assembly 40 is put into use; when the detection value of the detection device is smaller than the preset value, the electric power assisting assembly 30 and the hydraulic power assisting assembly 40 are both put into use.
By applying the technical solution of the present embodiment, the hydraulic power assisting unit 40 is connected to the steering gear 20 to output the steering power to the steering gear 20 and realize the hydraulic power assisting. The electric power assist unit 30 is connected to the steering gear 20 to output the steering power to the steering gear 20 and realize the electric power assist. In this way, hydraulic assist unit 40 is the main assist source, and when the assist force that hydraulic assist unit 40 can provide reaches the limit, electric assist unit 30 can provide certain assist force according to the assist capability that its motor capability corresponds to. If under the operating mode of engine idle speed such as parking near the limit, garage entry backs a car, because the helping hand that hydraulic power assistance subassembly 40 provided diminishes, perhaps when the hydraulic power assistance is not enough to need the driver to make great hand power when low temperature, electronic helping hand subassembly 30 can supply simultaneously and provide partly helping hand and then improve driver's hand power, and then solved under the specific circumstances of prior art hydraulic power assistance subassembly less and influence driver's the problem of driving experience to the helping hand of steering wheel, promoted driver's feeling.
In the present embodiment, the oil pump 41 is fixed to the engine by a belt and a bracket. When the engine speed increases, the rotation speed of the oil pump 41 increases, and the flow rate of the oil in the pipe 42 increases, so that the driver can be provided with a large assisting force. When the engine speed is reduced, the rotation speed of the oil pump 41 is reduced, the flow speed of the oil in the pipeline 42 is reduced, and the assistance provided for the driver is smaller.
In this embodiment, the electric power assist assembly 30 further includes a sensor assembly. The sensor assembly is connected with the motor controller, and the sensor assembly includes angle sensor, torque sensor and speed sensor, and angle sensor is used for detecting the turned angle of steering wheel 10, and torque sensor is used for detecting the moment on steering wheel 10, and speed sensor is used for detecting the rotational speed of wheel. Wherein, the motor controller controls the rotational speed of the first motor according to the detection value of the sensor assembly. Thus, when the driver rotates the steering wheel 10, the sensor assembly inputs the detected rotation angle and torque signals to the motor controller, and the motor controller comprehensively judges the signals through torque, vehicle speed, rotating speed and the like and then provides proper assistance by combining working conditions.
Specifically, when an operator controls the vehicle to run and steer in the cab, the driver operates the steering wheel 10 to rotate, the rotating angle and the torque of the steering wheel 10 are detected in real time through the angle sensor and the torque sensor, the motor controller calculates the torque and the rotating speed which need to be provided by the motor through a vehicle speed signal, a torque signal, a rotating angle signal and the like, the motor controller changes the torque in real time through controlling the motor, and then the operating torque of the steering wheel 10 is changed, so that the running and steering operation comfort under the high-speed and low-speed working conditions of the vehicle is realized.
In the present embodiment, both the torque sensor and the angle sensor are arranged between the steering wheel 10 and the steering gear 20, without being separate or embedded in other components, as in the prior art solutions between the angle drive and the hydraulic steering gear.
In the present embodiment, when the detection value of the torque sensor is smaller than the preset torque value and the detection value of the speed sensor is greater than zero, the motor controller controls the first motor to rotate in reverse, so as to achieve the self-alignment of the steering wheel 10. Thus, the automatic aligning function of the steering wheel 10 is realized, the vehicle deviation amount is improved, and the straight driving lane keeping capacity of the vehicle is improved.
Specifically, when the torque sensor detects that the torque of the steering wheel 10 is smaller than a preset torque value, the steering wheel 10 is considered to be out of human operation; if the vehicle speed is not zero, the motor controller applies a reverse signal to the motor according to the signal of the angle sensor, and the steering wheel 10 is driven to return to the middle position by controlling the reverse rotation of the motor, so that the automatic correction of the vehicle is realized.
As shown in fig. 1, the dual assist steering system further includes a linkage assembly 50. Wherein, coupling assembling 50 includes first connecting portion 51, cross 52 and second connecting portion 53, and cross 52 is including being the first axle section group and the second axle section group that the contained angle set up, and first connecting portion 51 is organized with the first axle section and is connected, and second connecting portion 53 is organized with the second axle section and is connected, and first connecting portion 51 is connected with steering wheel 10, and second connecting portion 53 is connected with the power input end of steering gear 20. Like this, be connected through coupling assembling 50 between steering wheel 10 and the steering gear 20, the input hydraulic fluid port of steering gear 20 is connected with oil pump 41, and the output hydraulic fluid port of steering gear 20 is connected with oil supply structure 43, realizes hydraulic pressure helping hand control and helping hand effect. Meanwhile, the steering gear 20 is directly connected with the steering wheel 10 through the connecting component 50, other mechanisms for changing the power transmission direction are omitted, the arrangement space is saved, the transmission chain of the transmission mechanism is reduced, and the risk and the fault point are reduced.
Alternatively, the steering gear 20 implements a direct tire steering assist action by controlling a source of high pressure oil output from the oil pump arrangement to enter the power cylinder. The steering device 20 is connected to the tires of the vehicle by a transmission mechanism, which includes one or more steering rods, steering arms, steering hanger arms, knuckle arms, etc., so as to realize the capability of the steering wheel 10 to mechanically control the tires to steer.
In this embodiment, the electric assist unit 30 is located between the steering wheel 10 and the steering gear 20. Like this, increase electronic helping hand subassembly 30 between steering wheel 10 and steering gear 20, electronic helping hand subassembly 30 and hydraulic pressure helping hand subassembly 40 combined action, through the corner and the moment signal of detection steering wheel 10 to with the speed of a motor vehicle signal phase-match after, control steering gear 20 action, realize the tire steering function, and electronic helping hand subassembly 30 can realize the vehicle and drive the purpose that low-speed is light, high-speed is stable on hydraulic pressure helping hand subassembly 40, realize the automatic function purpose of just returning of vehicle, and then improve the problem that hydraulic pressure helping hand subassembly 40 can not initiatively return and just.
Specifically, the electric power assisting assembly 30 detects parameters such as a turning angle and a moment of the steering wheel 10 according to the operation input of the steering wheel 10, and then transmits the parameters to the motor controller, the motor controller controls the motor to operate according to the parameters and the vehicle speed parameters, the power assisting characteristic is provided for the steering wheel 10 through the speed reducing mechanism, and when the vehicle speed is low, the power assisting characteristic is provided to be superposed with the steering wheel 10, so that the steering wheel 10 is more portable and free to operate; when the vehicle speed is higher, the resistance function opposite to the operation force of the steering wheel 10 is provided, so that the operation of the steering wheel 10 is slightly heavier, and the straight-line running capability and the high-speed running stability of the vehicle are enhanced; when the operating force of the steering wheel 10 is lower than a preset value, the motor controller can control the motor to operate the vehicle to steer, and the automatic aligning capability of the vehicle is met.
Optionally, the dual power steering system further comprises a power source and a voltage reducer. Wherein the power source is configured to provide power to hydraulic assist assembly 40 and electric assist assembly 30. The power supply is electrically connected with a power battery of the vehicle through a voltage reducer. In this way, both the hydraulic power assisting assembly 40 and the electric power assisting assembly 30 are powered by a low-voltage power supply, and the low-voltage power supply is connected with a power battery of the whole vehicle through a voltage reducer.
Specifically, the electric power assisting assembly 30 includes a power assisting motor, the power assisting motor is powered by a low-voltage power supply, the power assisting motor can be selectively started to provide auxiliary power for the steering gear 20, that is, the power assisting motor can provide auxiliary power for the steering gear 20 when started, and also can not be started to provide auxiliary power for the steering gear 20, when the power assisting motor is started to provide auxiliary power for the steering gear 20, the power assisting motor outputs steering power to the steering gear 20, and is connected with an input shaft of the steering gear 20, that is, the driving force output by the power assisting motor does not pass through a hydraulic circuit, thereby avoiding steering failure caused by hydraulic failure problems such as pipeline damage and oil pump damage, having sufficient steering redundancy, improving reliability and safety of vehicle steering, the power supply of the power assisting motor is low-voltage power, the low-voltage power input is stable, and electric energy input can be performed when a power battery of the vehicle fails, and the use is safer and more reliable.
In the present embodiment, when the power battery of the vehicle is normally operated, the electric energy output by the power battery is stepped down by the step-down transformer and then output to the low-voltage power supply, so that the low-voltage power supply supplies the hydraulic power assisting assembly 40; when the power battery fails, the low-voltage power supply outputs the low-voltage electric energy stored in the low-voltage power supply to the hydraulic power assisting assembly 40, so that the vehicle can still realize steering power assistance within a certain time, and a driver can conveniently control the vehicle to stop at the side; when the power battery fails and the hydraulic power assisting assembly 40 fails, the power assisting motor is started to provide auxiliary power for the steering gear 20, so that electric power-assisted steering is realized. Wherein, the vehicle can be [ electric ] motor coach, and [ electric ] motor coach is at the operation in-process, and the risk of high-pressure outage is far greater than the risk of low-pressure outage, consequently, uses low-pressure oil pump and low-pressure helping hand motor's reliability higher.
The power battery is electrically connected with the high-voltage distribution box, the high-voltage distribution box distributes high-voltage electricity output by the power battery, and the high-voltage distribution box is connected with the step-down transformer (DC-DC), so that the step-down transformer (DC-DC) reduces the high-voltage electricity output by the power battery into low-voltage electricity, and the step-down transformer is electrically connected with the low-voltage power supply. Therefore, high-voltage electricity output by the power battery is distributed and reduced in voltage and then input to the pressing power supply, and the low-voltage power supply outputs the high-voltage electricity to the hydraulic power assisting mechanism, so that electric energy supply is realized.
Optionally, the power supply is a storage battery, the output end of the power battery is electrically connected with the high-voltage distribution box, the output end of the high-voltage distribution box is connected with the DC-DC, and the output end of the DC-DC is connected with the storage battery, so that the high-voltage electricity output by the power battery is converted into low-voltage electricity which is input into the storage battery for storage, and the low-voltage electricity is conveniently output to the hydraulic power assisting mechanism. The power supply can be a power supply with an output voltage value ranging from 16V to 32V, and the low-voltage power supply outputs a low-voltage power supply with a voltage value of 24V in a stable state, so that the power supply is suitable for the hydraulic power assisting assembly 40.
It should be noted that the power battery outputs high voltage electricity, the high voltage electricity is converted into low voltage electricity after being reduced by the voltage reducer, the low voltage electricity can be temporarily stored in the low voltage power supply, or can be directly output to the hydraulic power assisting assembly 40 and the electric power assisting assembly 30 through the low voltage power supply, so as to ensure that the hydraulic power assisting assembly 40 and the electric power assisting assembly 30 stably work and output effective steering power assistance.
Specifically, the oil pump 41 is a low-pressure pump, the oil pump 41 is connected to a low-pressure power supply, and the low-pressure power supply can output low-pressure electricity to the oil pump 41 to drive the oil pump 41 to operate. In this way, the hydraulic power assisting assembly 40 can provide sufficient steering torque for the steering gear 20, ensure that the vehicle can steer in time when turning, and use the power battery of the vehicle as the power supply, so that the use cost of the power supply can be reduced.
Optionally, hydraulic assist assembly 40 further includes a second electric motor. Wherein, the second motor is connected with the oil pump 41 drive to drive the oil pump 41 to operate, and the power is the second motor power supply. Like this, the second motor is connected with oil pump 41, and the second motor passes through the low voltage power supply, and the second motor is the low voltage motor, and the low voltage power supply provides low-voltage electric energy to the second motor to drive oil pump 41 work through the second motor, and then to steering gear 20 output power-assisted steering, oil pump 41 can be the vane pump, and the power of second motor is the low-voltage electricity, and the low-voltage electricity input is stable, can carry out the electric energy input when the power battery of vehicle trouble, uses safelyr, secure.
Optionally, hydraulic assist assembly 40 further comprises a clutch, and the output of the second electric motor is adapted to be connected to the input of the clutch, i.e. the second electric motor is selectively connectable to the clutch, and the output of the clutch is connected to oil pump 41. Like this, the control system of vehicle can be according to the combined state of operating condition control second motor and clutch, when needing oil pump 41 output steering power-assisted, combines second motor and clutch, and second motor drive oil pump 41 moves, realizes hydraulic pressure helping hand, and structural design is reasonable, and uses in a flexible way, can carry out the control connection according to the demand, has fine convenience. The clutch can be an electromagnetic clutch, and the separation and the connection of the electromagnetic clutch can be controlled by outputting electric energy through a low-voltage power supply.
Optionally, the hydraulic power assisting assembly 40 further includes a coupler, and an output shaft of the clutch is connected to an input end of the oil pump 41 through the coupler, so that when the output shaft of the clutch rotates, the input end of the oil pump 41 and an output end of the clutch rotate synchronously, and the coupler is not easy to disengage under a stable working condition, thereby ensuring stable connection and reliable transmission between the clutch and the oil pump 41, and when the output shaft of the clutch or the input end of the oil pump 41 bears a large load, the coupler can also serve as a safety device to play a role in protection.
Optionally, the second motor is one; alternatively, there are two second motors, and the two second motors are respectively located at two sides of the oil pump 41. Like this, above-mentioned setting up makes the quantity of second motor select more in a flexible way to satisfy different user demand and operating mode, also promoted staff's processing flexibility. When two second motors are provided, the two second motors can simultaneously output driving force to the oil pump 41, and can also independently output power, or when one of the two second motors works, the other second motor is used as a standby power source, namely when one of the two second motors fails, the other second motor can be combined with the oil pump 41 through the electromagnetic clutch to output power, so that the power output of the steering gear 20 is ensured all the time, and the steering gear 20 has certain redundancy capability.
Optionally, the steering gear 20 is an electro-hydraulic steering gear.
Alternatively, the steering gear 20 is a hydraulically assisted two-circuit steering gear or a hydraulically assisted single-circuit steering gear.
In this embodiment, the electric power assisting assembly 30 can also provide damping compensation to counteract the impact steering disturbance transmitted to the steering column of the electric power assisting assembly 30 from the outside; when the vehicle suspension is not well adjusted so that the vehicle deviates, the compensation torque is applied to help the driver keep the vehicle running straight. Meanwhile, when the vehicle deviates due to short crosswind or uneven road surface, the assistance compensation provided by the electric assistance assembly 30 can eliminate the problem of vehicle deviation caused by lateral force. Wherein different vehicle speeds provide different power-assisted compensation to improve the driver's feel.
The present application further provides a vehicle (not shown) comprising the dual power steering system described above.
Optionally, the vehicle is an electric car.
Optionally, the vehicle is a heavy vehicle.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
the hydraulic power-assisted assembly is connected with the steering gear so as to output steering power to the steering gear and realize hydraulic power assistance. The electric power-assisted assembly is connected with the steering gear so as to output steering power-assisted force to the steering gear and realize electric power-assisted force. Therefore, the hydraulic power assisting assembly is a main power assisting source, and when the power assisting which can be provided by the hydraulic power assisting assembly reaches the limit, the electric power assisting assembly can provide certain power assisting according to the power assisting capacity corresponding to the motor capacity of the electric power assisting assembly. If under the operating mode of engine idle speed such as parking near the side, backing a car and putting in storage, because the helping hand that hydraulic power assistance subassembly provided diminishes, perhaps hydraulic power assistance is not enough when the low temperature and needs the driver to make great hand power, electronic helping hand subassembly can supply simultaneously and provide some helping hand and then improve driver's hand power, and then has solved under the specific circumstances of prior art hydraulic power assistance subassembly less and influence driver's driving experience's problem to the helping hand of steering wheel, has promoted driver's feeling.
It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A dual assist steering system, comprising:
a steering wheel (10);
a steering gear (20) connected to the steering wheel (10);
an electric power assist assembly (30) comprising a first electric motor and a motor controller electrically connected to the first electric motor for controlling an operating state and operating parameters of the first electric motor;
the hydraulic power-assisted assembly (40) comprises an oil pump (41), a pipeline (42) and an oil supply structure (43), wherein the oil supply structure (43) is communicated with an input end oil port of the steering gear (20) through the pipeline (42), the oil pump (41) is arranged on the pipeline (42) so as to pump oil in the oil supply structure (43) to the input end oil port through the oil pump (41), and an output end oil port of the steering gear (20) is communicated with the oil supply structure (43);
the detection device is arranged on the pipeline (42) and is used for detecting the flow speed or the flow of the oil liquid in the pipeline (42);
when the detection value of the detection device is larger than or equal to a preset value, the hydraulic power assisting assembly (40) is put into use; when the detection value of the detection device is smaller than a preset value, the electric power assisting assembly (30) and the hydraulic power assisting assembly (40) are both put into use.
2. The dual assist steering system of claim 1, wherein the electric assist assembly (30) further comprises:
the sensor assembly is connected with the motor controller and comprises an angle sensor, a torque sensor and a speed sensor, the angle sensor is used for detecting the rotation angle of the steering wheel (10), the torque sensor is used for detecting the torque on the steering wheel (10), and the speed sensor is used for detecting the rotating speed of wheels; wherein the motor controller controls the rotation speed of the first motor according to a detection value of the sensor assembly.
3. The dual power steering system according to claim 2, wherein the motor controller controls the first motor to reverse in order to achieve self-righting of the steering wheel (10) when a detected value of the torque sensor is smaller than a preset torque value and a detected value of the speed sensor is greater than zero.
4. The dual assist steering system of claim 1, further comprising:
coupling assembling (50), including first connecting portion (51), cross (52) and second connecting portion (53), cross (52) are including the first shaft section group and the second shaft section group that are the contained angle setting, first connecting portion (51) and first shaft section group link, second connecting portion (53) with second shaft section group link, first connecting portion (51) with steering wheel (10) are connected, second connecting portion (53) with the power input end of steering gear (20) is connected.
5. The dual power steering system of claim 1, wherein the electric assist assembly (30) is located between the steering wheel (10) and the steering gear (20).
6. The dual assist steering system of claim 1, further comprising:
a power source for powering the hydraulic assist assembly (40) and the electric assist assembly (30);
the voltage reducer is used for electrically connecting the power supply with a power battery of the vehicle.
7. The dual assist steering system of claim 6 wherein the hydraulic assist assembly (40) further comprises:
the second motor is in driving connection with the oil pump (41) to drive the oil pump (41) to operate, and the power supply supplies power to the second motor.
8. The dual assist steering system of claim 7, wherein the second electric machine is one; or the number of the second motors is two, and the two second motors are respectively positioned on two sides of the oil pump (41).
9. The dual power steering system according to claim 1, wherein the steering gear (20) is an electro-hydraulic steering gear.
10. A vehicle characterized by comprising the dual assist steering system of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221689557.7U CN217672813U (en) | 2022-06-30 | 2022-06-30 | Double-power-assisted steering system and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221689557.7U CN217672813U (en) | 2022-06-30 | 2022-06-30 | Double-power-assisted steering system and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217672813U true CN217672813U (en) | 2022-10-28 |
Family
ID=83713153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221689557.7U Active CN217672813U (en) | 2022-06-30 | 2022-06-30 | Double-power-assisted steering system and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217672813U (en) |
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2022
- 2022-06-30 CN CN202221689557.7U patent/CN217672813U/en active Active
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