Electric steering system of pneumatic tyred roller

Abstract

The utility model discloses an electric steering system of a pneumatic tire roller, and relates to the technical field of steering systems. The electric steering system is composed of an electronic steering wheel, a controller, a servo motor, an electric cylinder and a high-voltage battery, the servo motor is installed on the electric cylinder, the servo motor and the electric cylinder are of an integrated structure, the electric cylinder is installed above a front tire of a vehicle body, and the high-voltage battery provides power for the electric cylinder. The electronic steering wheel is mounted in a cab and mainly comprises a sensor, an electronic computing unit and a signal transmitting unit. According to the utility model, the steering of a traditional mechanical steering wheel, a hydraulic steering gear and a hydraulic steering oil cylinder is replaced by electric steering, and the steering function of the pneumatic tyred roller is realized by utilizing the electric cylinder; a traditional mechanical steering wheel is replaced by the electronic steering wheel, a traditional hydraulic steering oil cylinder is replaced by the electric cylinder, a fuel engine is replaced by the high-voltage battery, and the control precision is higher than that of traditional oil control.

Description

Technical Field

[0001] The utility model relates to the technical field of steering systems, in particular to an electric steering system for a tire roller. Background Art

[0002] A tire roller is a type of road-compacting machinery used in construction machinery. It utilizes multiple pneumatic tires to compact roads. Typically, it has 3-5 tires installed in the front and 4-6 tires installed in the rear. Suitable for compacting various materials, including base layers, sub-base layers, and asphalt surface courses, it is an indispensable compaction machine for highway, municipal, and national defense construction.

[0003] Traditional fuel-powered tire rollers currently utilize a mechanical swing suspension system for the front wheels. The driver rotates the mechanical steering wheel to change the direction of the steering fluid. This fluid is then transferred via hydraulic hoses to the hydraulic cylinder, which then generates forward and backward linear motion. The hydraulic cylinder, through its mechanical structure, pushes the front tires, creating a left-right pressure differential, thereby changing the tire's direction of travel and steering the vehicle.

[0004] In recent years, with growing environmental awareness and the continuous development of new energy technologies, the application of new energy in construction machinery has become a hot topic and a key trend in the industry. With the rapid development of new energy technologies, major automakers have launched a wide range of new energy construction machinery products, including new energy excavators, new energy mining trucks, new energy loaders, new energy bulldozers, and new energy rollers. Tire rollers, as an essential component of compaction machinery, are also in need of product upgrades, with new energy tire rollers being the development direction. Compared to traditional fuel-powered tire rollers, new energy tire rollers utilize a high-voltage battery instead of a fuel engine. Furthermore, the steering system of traditional fuel-powered tire rollers is powered by the engine and achieved through a combination of oil, pumps, valves, and related connecting pipes. Due to the varying characteristics of these components, the high-voltage battery in the power unit of new energy rollers cannot continue to utilize traditional oil-powered steering. Given the change in energy conversion mode and the extremely high positioning accuracy and controllability of electric cylinders, replacing traditional hydraulic cylinders with electric cylinders has become inevitable.

[0005] For this purpose, an electric steering system for a tire roller is proposed. Utility Model Content

[0006] The purpose of the present utility model is to solve the problems raised in the above background technology, and the present utility model provides an electric steering system for a tire roller.

[0007] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0008] A tire roller electric steering system consists of an electronic steering wheel, a controller, a servo motor, an electric cylinder and a high-voltage battery. The servo motor is installed on the electric cylinder, and the two form an integrated structure. The electric cylinder is installed above the front tire of the vehicle body, and the high-voltage battery provides power for the electric cylinder.

[0009] Furthermore, the electronic steering wheel is installed inside the cab, and the electronic steering wheel is mainly composed of a sensor, an electronic calculation unit and a signal sending unit.

[0010] Furthermore, the controller can be installed inside the console, inside the armrest box, and other suitable locations.

[0011] Furthermore, the servo motor can control the speed and position accuracy, and can convert the voltage signal into torque and speed to drive and control the electric cylinder.

[0012] Furthermore, the electric cylinder is connected to a tire mounting bracket, and the tire bracket can be rotated to adjust the driving angle of the front tire.

[0013] Furthermore, the electric cylinder and the high-voltage battery are connected via a high-voltage cable to transmit electrical energy.

[0014] The beneficial effects of the utility model are as follows:

[0015] Manipulate the electronic steering wheel to rotate it clockwise or counterclockwise. The rotation of the electronic steering wheel generates a changing electrical signal. This changing electrical signal may be a CAN bus signal, an analog signal, a resistance signal, a voltage signal, a current signal, etc. The signal is transmitted to the controller through the wiring harness. The controller receives the input signal from the electronic steering wheel and generates a corresponding output signal according to the internal preset control strategy and algorithm. The output signal is transmitted to the servo motor through the wiring harness. Since the servo motor and the electric cylinder are an integrated structure, the servo motor drives the linear reciprocating motion of the electric cylinder. The linear reciprocating motion of the electric cylinder changes the walking direction of the front tire through the mechanical connection structure. The electric steering system converts the precise speed control and torque control of the servo motor into precise speed control, position control and thrust control, thereby realizing high-precision linear motion control of the steering of the new energy tire roller.

[0016] The electric steering replaces the traditional mechanical steering wheel, hydraulic steering gear, and hydraulic steering cylinder, and the electric cylinder is used to realize the steering function of the tire roller;

[0017] By using an electronic steering wheel instead of the traditional mechanical steering wheel, an electric cylinder instead of the traditional hydraulic steering cylinder, and a high-voltage battery instead of the fuel engine, the control accuracy is more precise than traditional oil control. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the electric steering system of the tire roller of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection of components of the electric steering system of the tire roller of the utility model;

[0020] Figure numerals: 1. Electronic steering wheel; 2. Controller; 3. Servo motor; 4. Electric cylinder; 5. High-voltage battery. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0025] like Figures 1 to 2As shown, an electric steering system for a tire roller is composed of an electronic steering wheel 1, a controller 2, a servo motor 3, an electric cylinder 4 and a high-voltage battery 5. The servo motor 3 is installed on the electric cylinder 4, and the two are an integrated structure. The electric cylinder 4 is installed above the front tire of the vehicle body, and the high-voltage battery 5 provides power for the electric cylinder 4. More specifically, the vehicle starts, and the gear handle is manipulated to make the vehicle move forward or backward. When the vehicle needs to turn, the driver sitting on the seat manipulates the electronic steering wheel 1 to rotate it clockwise or counterclockwise. The rotation of the electronic steering wheel 1 generates a changing electrical signal. This changing electrical signal may be a CAN bus signal, an analog signal, a resistance signal, a voltage signal, a current signal, etc. The signal is transmitted to the controller 2 through the wiring harness. The controller 2 receives the input signal from the electronic steering wheel 1 and generates a corresponding output signal according to the internal preset control strategy and algorithm. The output signal may be a positive signal or a negative signal. The output signal is transmitted to the servo motor 3 through the wiring harness. The servo motor 3 generates forward or reverse rotation according to the positive and negative characteristics of the signal. Since the servo motor 3 and the electric cylinder 4 are an integrated structure, the positive and negative rotational motion of the servo motor 3 is converted into the linear reciprocating motion of the electric cylinder 4 through the screw-nut motion pair. The linear reciprocating motion of the electric cylinder 4 pushes the front tire to form a left-right pressure difference through the mechanical connection structure, thereby changing the walking direction of the front tire. The electric steering system converts the precise speed control and torque control of the servo motor 3 into precise speed control, position control and thrust control, realizing high-precision linear motion control of the steering of the new energy tire roller.

[0026] The electronic steering wheel 1 is installed inside the cab and primarily consists of sensors, an electronic computing unit, and a signal transmission unit. Specifically, the sensors detect information such as the steering wheel's rotation angle and speed, and transmit this data to the electronic computing unit. Based on this information, the computing unit calculates the optimal steering assist level and direction, and transmits this signal via the signal transmission unit to the controller 2.

[0027] Controller 2 can be installed inside the console, inside the armrest box, or other suitable locations. More specifically, it should be installed in a suitable location to facilitate replacement and maintenance. Controller 2 receives input signals from sensors or other devices and generates corresponding output signals based on pre-set control strategies and algorithms, thereby achieving precise control of the controlled object.

[0028] Servo motor 3 controls speed and position accuracy, converting voltage signals into torque and speed to drive and control electric cylinder 4. More specifically, the rotor speed of servo motor 3 is controlled by input signals and responds quickly. In automatic control systems, it functions as an actuator, boasting a small electromechanical time constant and high linearity. It converts received electrical signals into angular displacement or angular velocity output on the motor shaft.

[0029] The electric cylinder 4 is connected to the tire mounting bracket, which can rotate to adjust the driving angle of the front tire. More specifically, the motor in the electric cylinder 4 rotates to drive the reducer, which is converted into linear motion or thrust through the lead screw.

[0030] The electric cylinder 4 and the high-voltage battery 5 are connected by a high-voltage cable to transmit electrical energy. More specifically, the high-voltage battery 5 is placed inside the vehicle body in the middle of the workshop. Due to its heavy weight, this location also serves as a counterweight.

[0031] In summary: the vehicle starts, and the gear handle is manipulated to make the vehicle move forward or backward. When the vehicle needs to turn, the driver sitting on the seat manipulates the electronic steering wheel 1 to rotate it clockwise or counterclockwise. The rotation of the electronic steering wheel 1 generates a changing electrical signal. This changing electrical signal may be a CAN bus signal, an analog signal, a resistance signal, a voltage signal, a current signal, etc. The signal is transmitted to the controller 2 through the wiring harness. The controller 2 receives the input signal from the electronic steering wheel 1 and generates a corresponding output signal according to the internal preset control strategy and algorithm. The output signal may be a positive signal or a negative signal. The signal is transmitted to the servo motor 3 through the wiring harness. The servo motor 3 generates forward or reverse rotation according to the positive and negative characteristics of the signal. Since the servo motor 3 and the electric cylinder 4 are an integrated structure, the positive and negative rotational motion of the servo motor 3 is converted into the linear reciprocating motion of the electric cylinder 4 through the screw-nut motion pair. The linear reciprocating motion of the electric cylinder 4 pushes the front tire to form a left-right pressure difference through the mechanical connection structure, thereby changing the walking direction of the front tire. The electric steering system converts the precise speed control and torque control of the servo motor 3 into precise speed control, position control and thrust control, realizing high-precision linear motion control of the steering of the new energy tire roller.

[0032] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric steering system for a tire roller, characterized in that: The electric steering system consists of an electronic steering wheel (1), a controller (2), a servo motor (3), an electric cylinder (4) and a high-voltage battery (5). The servo motor (3) is mounted on the electric cylinder (4), and the two are an integrated structure. The electric cylinder (4) is mounted above the front tire of the vehicle body, and the high-voltage battery (5) provides power to the electric cylinder (4).

2. The electric steering system for a tire roller according to claim 1, characterized in that: The electronic steering wheel (1) is installed inside the cab, and the electronic steering wheel (1) mainly consists of a sensor, an electronic calculation unit, and a signal sending unit.

3. The electric steering system for a tire roller according to claim 1, characterized in that: The controller (2) can be installed inside the control panel or inside the armrest box.

4. The electric steering system for a tire roller according to claim 1, characterized in that: The servo motor (3) can control speed and position accuracy, and can convert a voltage signal into torque and speed to drive and control the electric cylinder (4).

5. The electric steering system for a tire roller according to claim 1, characterized in that: The electric cylinder (4) is connected to a tire mounting bracket, and the tire bracket can be rotated to adjust the driving angle of the front tire.

6. The electric steering system for a tire roller according to claim 1, characterized in that: The electric cylinder (4) and the high-voltage battery (5) are connected via a high-voltage cable to transmit electrical energy.

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