Electro-hydraulic steering system for articulated trackless vehicle and articulated trackless vehicle
A technology for steering systems and trackless vehicles, which is applied in the fields of electro-hydraulic steering systems and articulated trackless vehicles, can solve the problems of large throttling loss of control valves, low system energy utilization rate, and low space utilization rate, etc., so as to reduce pipeline connections. , the effect of improving energy utilization and improving control accuracy
Active Publication Date: 2021-07-02
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
[0004] In the existing articulated vehicle steering system, the main components are connected by soft or hard oil pipes. Due to the scattered layout of the components, this system has problems such as high delay, poor accuracy, and low space utilization, and the control valve in the system is throttling. Large loss, high oil return back pressure, large overflow loss, resulting in low energy utilization of the system
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[0028] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0029] This embodiment provides an electro-hydraulic steering system for articulated trackless vehicles, such as figure 1 As shown, the articulated trackless vehicle includes a front car body 9 and a rear car body 14, the front car body 9 and the rear car body 14 are connected through a hinge mechanism in the middle, retaining but not limited to each other around the axis perpendicular to the ground rotational degrees of freedom.
[0030] The electro-hydraulic steering system includes: a driving motor 1, a quantitative gear pump 2, a first hydraulic control check valve 3, an accumulator 4, an overflow valve 5, a shuttle valve 6, a first pipeline 7, and a first steering cylinder 11. The second steering oil cylinder 12 , the electromagn...
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The invention discloses an electro-hydraulic steering system for an articulated trackless vehicle and the articulated trackless vehicle. The electro-hydraulic steering system comprises a driving motor, a quantitative gear pump, a first hydraulic control one-way valve, an energy accumulator, an overflow valve, a shuttle valve, a first steering oil cylinder, a second steering oil cylinder, an electromagnetic switch valve and a second hydraulic control one-way valve. The motor is connected with the gear pump, the first connector of the gear pump is communicated with a rod cavity of the first steering oil cylinder and a rodless cavity of the second steering oil cylinder through a first pipeline, and the second connector of the gear pump is communicated with a rodless cavity of the first steering oil cylinder and a rod cavity of the second steering oil cylinder through a second pipeline; and the electromagnetic switch valve is arranged on the first pipeline or the second pipeline. The gear pump, the electromagnetic switch valve and the steering oil cylinders form a closed main loop, and vehicle steering is achieved by controlling the steering and rotating speed of the motor; other accessories are used for oil supplementation and safe overflow functions of the system. The response speed and control precision of the steering system can be improved, and the steering system has the advantages of being simple, easy to arrange, high in energy utilization rate and the like.
Description
technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to an electro-hydraulic steering system for an articulated trackless vehicle and the articulated trackless vehicle. Background technique [0002] Articulated trackless vehicles (hereinafter referred to as articulated vehicles) are usually composed of two parts, the front and rear car bodies, which are connected by a hinge mechanism in the middle, and the relative rotation of the front and rear car bodies is controlled by the actuator to achieve steering. According to different application scenarios and functions, the front and rear bodies of the articulated vehicle can be equipped with different working devices. Due to its significant advantages in mobility and operating efficiency, articulated vehicles have been widely used in related fields such as construction, mining, forestry, and agriculture. [0003] At present, the existing articulated vehicle steering system is...
Claims
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Login to View More IPC IPC(8): B62D5/06B62D5/09
CPCB62D5/06B62D5/064B62D5/091
Inventor 高路路马飞金纯刘玉超
Owner UNIV OF SCI & TECH BEIJING