Integrated front axle electric control steering system

Abstract

The utility model is suitable for the technical field of steering systems, and provides an integrated front axle electric control steering system, which comprises a steering wheel, a first angle sensor, a second angle sensor, a first steering wheel, a second steering wheel, a second steering wheel and a third steering wheel, and is characterized in that the steering wheel is rotatably connected in a cab; the steering mechanism comprises a front axle and a driving assembly, the driving assembly comprises a driving piece rotationally connected to the front axle and a stress rod arranged at the output end of the driving piece, and the free end of the stress rod is rotationally connected to a steering rod of the front axle; the control module is used for collecting signals of the first angle sensor and controlling the driving part to stretch out and draw back, so that the steering intention of a driver is collected in the mode of the steering wheel and the angle sensor and transmitted to the ECU display control unit, connection is reliable and gapless, road feeling is completely filtered, meanwhile, the electric control steering mechanism is integrated on the front axle, and the steering effect is good. The steering mechanism receives signals from the ECU display control unit and executes steering action, and the structure of the steering mechanism is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of steering systems, in particular to an integrated front axle electronically controlled steering system. Background Art

[0002] As the automation and intelligence level of agricultural machinery in my country continues to improve, users have put forward higher requirements for the automation of agricultural machinery. Nowadays, more and more tractors have integrated or installed automatic navigation driving systems to realize automatic driving and steering of tractors in different field operations such as ridging, sowing, and plant protection, thereby ensuring ideal operation results.

[0003] At present, tractor automatic driving navigation system and automatic steering control technology have gradually become popular in the market and are loved by farmers. However, the existing automatic steering system has a complex structure, is difficult to install, and has low hydraulic transmission efficiency, which does not meet the current era of energy conservation and consumption reduction.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide an integrated front-axle electronic steering system, which can collect the driver's steering intention by adopting a steering wheel + angle sensor and transmit it to the ECU display and control unit. The connection is reliable and gapless, and the road feel is completely filtered. At the same time, an electronic steering mechanism is integrated on the front axle, which receives signals from the ECU display and control unit and executes steering actions, thereby simplifying the structure of the steering mechanism.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an integrated front-axle electronically controlled steering system, comprising: a steering wheel, which is rotatably connected to a cab, a first angle sensor for detecting a rotation angle signal of the steering wheel fixedly arranged in an operating table of the cab; a steering mechanism, which comprises a front axle and a driving component for driving the front axle to steer, the driving component comprising a driving member rotatably connected to the front axle and a force-bearing rod arranged at an output end of the driving member, the free end of the force-bearing rod is rotatably connected to a steering rod of the front axle, and the driving member drives the force-bearing rod to extend and retract to drive two steering wheels at both ends of the front axle to steer; a control module, which is used to collect the first angle sensor signal and control the extension and retraction of the driving member.

[0007] According to the integrated front axle electronic steering system of the utility model, the control module includes an ECU display and control unit, the ECU display and control unit is connected to the first angle sensor, the ECU display and control unit is connected to the drive member, the ECU display and control unit collects the first angle sensor signal and controls the extension and retraction of the drive member according to the first angle sensor signal.

[0008] According to the integrated front axle electric steering system of the utility model, the driving member is a rotating motor, the force-bearing rod is a lead screw, a lead screw sleeve is provided at the output end of the rotating motor, and the lead screw cooperates with the lead screw sleeve.

[0009] According to the integrated front axle electronic steering system of the utility model, a position detection element is provided on the lead screw, and the position detection element is used to detect the extension and retraction length of the lead screw, and the ECU display and control unit is connected to the position detection element.

[0010] According to the integrated front axle electronically controlled steering system of the utility model, a second angle sensor for detecting the steering angle of the steering wheel is provided on the front axle, and the second angle sensor is connected to the ECU display and control unit.

[0011] According to the integrated front axle electric steering system of the utility model, the drive components are provided with two groups, the two groups of drive components are respectively arranged at the two ends of the front axle, and the telescopic states of the force-bearing rods of the two groups of drive components are opposite.

[0012] According to the integrated front axle electronically controlled steering system of the utility model, a torque sensor and a damping limiter are further provided outside the rotating shaft of the steering wheel, and the torque sensor is connected to the ECU display and control unit.

[0013] According to the integrated front axle electronically controlled steering system of the utility model, a motor transmission is provided between the rotating motor and the lead screw sleeve, the control unit further comprises an electronically controlled accessory, and the ECU display and control unit is connected to the electronically controlled accessory.

[0014] The utility model provides an integrated front axle electric control steering system, comprising: a steering wheel, which is rotatably connected to a cab, a first angle sensor for detecting a rotation angle signal of the steering wheel is fixedly arranged in an operating table of the cab, so as to ensure that the rotation angle of the steering wheel is detected, so as to facilitate a control module to control the steering of the steering wheel; a steering mechanism, which comprises a front axle and a driving component for driving the steering of the front axle, the steering of the front axle is driven by the driving component to realize the overall steering operation, the driving component comprises a driving member rotatably connected to the front axle and a force rod arranged at the output end of the driving member, the free end of the force rod is rotatably connected to the steering rod of the front axle, and the driving member drives the force rod to extend The two steering wheels at both ends of the front axle are driven to steer, ensuring that the steering process of the steering wheels is realized through the driving member; a control module, which is used to collect the first angle sensor signal and control the extension and retraction of the driving member. The extension and retraction process of the driving member is directly controlled by the control module, which reduces the feedback time of the hydraulic system, simplifies the control mechanism, and reduces the cost. In summary, the technical effect produced by the utility model is to collect the driver's steering intention by adopting the steering wheel + angle sensor method, and transmit it to the ECU display and control unit. The connection is reliable and gapless, and the road feel is completely filtered. At the same time, an electronically controlled steering mechanism is integrated on the front axle to receive the signal from the ECU display and control unit, execute the steering action, and simplify the structure of the steering mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the control structure of the utility model;

[0016] In the figure, 1-steering wheel, 2-damping limiter, 3-first angle sensor, 5-ECU display and control unit, 6-electronic control accessories, 8-steering wheel, 10-motor transmission, 11-load rod, 12-front axle, 13-torque sensor. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] See also Figure 1The utility model provides an integrated front axle electric control steering system, which includes a steering wheel 1, which is rotatably connected to the cab, and a first angle sensor 3 for detecting the rotation angle signal of the steering wheel 1 is fixedly arranged in the operating table of the cab, so as to ensure that the rotation angle of the steering wheel 1 is detected, so as to facilitate the control module to control the steering of the steering wheel 8; a steering mechanism, which includes a front axle 12 and a driving component for driving the front axle 12 to steer, and the front axle 12 is driven by the driving component to steer, so as to realize the overall steering operation, and the driving component includes a rotatable connection A driving member on the front axle 12 and a force-bearing rod 11 arranged at the output end of the driving member, the free end of the force-bearing rod 11 is rotatably connected to the steering rod of the front axle 12, and the driving member drives the force-bearing rod 11 to extend and retract to drive the two steering wheels 8 at both ends of the front axle 12 to steer, thereby ensuring that the steering process of the steering wheel 8 is realized by the driving member; a control module, which is used to collect the signal of the first angle sensor 3 and control the extension and retraction of the driving member, and directly controls the extension and retraction process of the driving member through the control module, thereby reducing the feedback time of the hydraulic system, simplifying the control mechanism, and reducing the cost.

[0019] Preferably, the control module of the present invention includes an ECU display and control unit 5, which is connected to the first angle sensor 3, and detects the rotation angle of the steering wheel 1 through the first angle sensor 3. The ECU display and control unit 5 is connected to the driving member, and the ECU display and control unit 5 collects the signal of the first angle sensor 3 and controls the extension and retraction of the driving member according to the signal of the first angle sensor 3, thereby controlling the steering angle of the steering wheel 8.

[0020] In addition, the driving part of the utility model is a rotating motor, the force-bearing rod 11 is a lead screw, and the output end of the rotating motor is provided with a lead screw sleeve. The lead screw cooperates with the lead screw sleeve to ensure that the rotation of the rotating motor can drive the force-bearing rod 11 to extend and retract, thereby controlling the steering of the steering wheel 8. A position detection element is provided on the lead screw, and the position detection element is used to detect the extension and retraction length of the lead screw. The ECU display and control unit 5 is connected to the position detection element and is connected to the ECU display and control unit 5 through the position detection element, thereby ensuring that the ECU display and control unit 5 can effectively monitor the position of the lead screw.

[0021] Furthermore, the front axle 12 of the utility model is provided with a second angle sensor for detecting the steering angle of the steering wheel 8, and the second angle sensor is connected to the ECU display and control unit 5 to monitor the steering angle of the steering wheel 8. The drive assembly is provided with two groups, and the two groups of drive assemblies are respectively arranged at both ends of the front axle 12, and the telescopic states of the force-bearing rods 11 of the two groups of drive assemblies are opposite, thereby ensuring that the position of the steering rod on the front axle 12 can be stably controlled.

[0022] Better yet, the outside of the rotating shaft of the steering wheel 1 of the utility model is also provided with a torque sensor 13 and a damping limiter 2, the torque sensor is connected to the ECU display and control unit 5, and the torque sensor is used to detect whether the steering wheel 1 is manually operated, and the damping limiter 2 is used to limit the rotation of the steering wheel 1, thereby ensuring the rotational force of the steering wheel 1 itself and preventing the steering wheel 1 from rotating accidentally. At the same time, a variable and appropriate steering (damping) feel is provided to the user to limit the free rotation angle of the steering wheel 1, for example, 2 turns to the left / right or 2 and a half turns to the left / right. A motor transmission 10 is provided between the rotating motor and the screw sleeve, and the control unit also includes an electronic control accessory 6, and the ECU display and control unit 5 is connected to the electronic control accessory 6, and the electronic control accessory 6 can monitor various states and feed back to the ECU display and control unit 5.

[0023] In this embodiment, the system is suitable for a steering system of an automatic navigation system including a steering wheel 1, a first angle sensor 3 and a second angle sensor, the combination of which is used to collect the steering wheel 1 angle signal and send it to the ECU display and control unit 5 for processing. The electronic control accessory 6 is responsible for collecting the current state of the vehicle (speed, vehicle posture, direction of travel) and receiving GNSS signals. The ECU display and control unit 5 compares the signals from the electronic control accessory 6 and the first angle sensor 3 and the second angle sensor, and sends a command signal to the motor transmission 10. The motor transmission 10 drives the lead screw to move in a straight line, and the steering wheel 8 is driven by the lead screw to achieve steering.

[0024] When the driver takes over the vehicle, he turns the steering wheel 1, driving the torque sensor 13 to generate a torque signal and sending it to the ECU display and control unit 5. The ECU display and control unit 5 immediately cuts off the automatic driving and switches to manual driving. At this time, the angle signal of the first angle sensor 3 driven by the steering wheel 1 is processed by the ECU display and control unit 5, and then sends a command signal to the motor transmission 10 according to the preset steering ratio. The motor transmission 10 drives the lead screw mechanism to make a linear motion, and the lead screw drives the steering wheel 8 to achieve steering. At the same time, the motor transmission 10 and the lead screw are integrated into the front axle 12, and the product can provide better compactness and economy.

[0025] In summary, the utility model provides an integrated front-axle electronically controlled steering system, comprising: a steering wheel, which is rotatably connected to a cab, a first angle sensor for detecting a rotation angle signal of the steering wheel is fixedly arranged in an operating table of the cab, so as to ensure that the rotation angle of the steering wheel is detected, so as to facilitate a control module to control the steering of the steering wheel; a steering mechanism, which comprises a front axle and a driving component for driving the steering of the front axle, wherein the steering of the front axle is driven by the driving component to realize the overall steering operation, wherein the driving component comprises a driving member rotatably connected to the front axle and a force-bearing rod arranged at the output end of the driving member, wherein the free end of the force-bearing rod is rotatably connected to the steering rod of the front axle, and the driving member drives the force-bearing rod to rotate and rotate to rotate. The rod is telescopically driven to steer the two steering wheels at both ends of the front axle, ensuring that the steering process of the steering wheels is realized through the driving member; the control module is used to collect the first angle sensor signal and control the telescopic movement of the driving member. The telescopic process of the driving member is directly controlled by the control module, which reduces the feedback time of the hydraulic system, simplifies the control mechanism, and reduces the cost. In summary, the technical effect produced by the utility model is to collect the driver's steering intention by adopting the steering wheel + angle sensor method, and transmit it to the ECU display and control unit. The connection is reliable and gapless, and the road feel is completely filtered. At the same time, the electronic steering mechanism is integrated on the front axle, receives the signal from the ECU display and control unit, executes the steering action, and simplifies the structure of the steering mechanism.

[0026] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

Claims

1. An integrated front axle electronically controlled steering system, characterized in that: include: A steering wheel is rotatably connected to the cab, and a first angle sensor for detecting a rotation angle signal of the steering wheel is fixedly arranged in an operating console of the cab; A steering mechanism, comprising a front axle and a driving assembly for driving the front axle to steer, wherein the driving assembly comprises a driving member rotatably connected to the front axle and a force rod arranged at an output end of the driving member, wherein a free end of the force rod is rotatably connected to a steering rod of the front axle, and the driving member drives the force rod to extend and retract to drive two steering wheels at both ends of the front axle to steer; A control module is used to collect the first angle sensor signal and control the extension and retraction of the driving member.

2. The integrated front axle electronic steering system according to claim 1, characterized in that: The control module includes an ECU display and control unit, the ECU display and control unit is connected to the first angle sensor, the ECU display and control unit is connected to the driving member, the ECU display and control unit collects the first angle sensor signal and controls the extension and retraction of the driving member according to the first angle sensor signal.

3. The integrated front axle electronically controlled steering system according to claim 2, characterized in that: The driving member is a rotating motor, the force bearing rod is a lead screw, a lead screw sleeve is provided at the output end of the rotating motor, and the lead screw cooperates with the lead screw sleeve.

4. The integrated front axle electronically controlled steering system according to claim 3, characterized in that: The lead screw is provided with a position detection element, which is used to detect the extension and retraction lengths of the lead screw, and the ECU display and control unit is connected to the position detection element.

5. The integrated front axle electronically controlled steering system according to any one of claims 3 to 4, characterized in that: The front axle is provided with a second angle sensor for detecting the steering angle of the steering wheel, and the second angle sensor is connected to the ECU display and control unit.

6. The integrated front axle electronically controlled steering system according to claim 5, characterized in that: The driving components are provided with two groups, and the two groups of driving components are respectively arranged at two ends of the front axle, and the telescopic states of the force-bearing rods of the two groups of driving components are opposite.

7. The integrated front axle electronically controlled steering system according to claim 6, characterized in that: A torque sensor and a damping limiter are also provided outside the rotating shaft of the steering wheel, and the torque sensor is connected to the ECU display and control unit.

8. The integrated front axle electronically controlled steering system according to claim 6 or 7, characterized in that: A motor transmission is provided between the rotating motor and the lead screw sleeve, the control module further comprises an electronically controlled accessory, and the ECU display and control unit is connected to the electronically controlled accessory.

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