Pressure valve used for idle lubrication of hydrodynamic machine
A technology of hydraulic machinery and pressure valve, applied in the field of valve structure, can solve problems such as increasing the manufacturing cost of control valve, and achieve the effect of reducing design and processing, cost and maintenance difficulty
Inactive Publication Date: 2013-02-20
SHAANXI FAST GEAR CO
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Problems solved by technology
Although this approach reduces the manufacturing difficulty of the retarder housing, it requires a large change in the structure of the retarder control valve, which increases the manufacturing cost of the control valve
Method used
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Embodiment Construction
[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0023] Such as figure 1 Shown: the working chamber is composed of the rotor 1 and the stator 3. In order to facilitate the provision of working medium when the retarder is working, and to provide a space for building the pressure of the working medium, the retarder is provided with an oil pool 9 for storing the working medium, and the lower chamber of the oil pool 9 is connected to the working chamber through a channel 10 . In order to take away the braking heat absorbed by the working medium and dissipate it into the air, the retarder is also equipped with a heat exchanger 4, the inlet of the heat exchanger 4 communicates with the working chamber through the pipeline 2, and the outlet of the heat exchanger 4 passes through The pipeline 5 communicates with the oil pool 9. A throttling valve and a directional valve group for controlling the pressure and dire...
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The invention provides a pressure valve used for an idle lubrication of hydrodynamic machine. The pressure valve comprises a valve body, a valve plate, springs and a valve base, wherein the valve base is fixedly arranged on the tail part of the valve body, and the valve base has a first through hole which penetrates through the upper end face and lower end face of the valve base; a valve body working chamber is formed between the valve base and the valve body, the springs are arranged on the valve base, and the valve plate is positioned in the valve body working chamber; a second through hole communicated with the valve body working chamber is formed at the head of the valve body; and when the springs are positioned at a free state, the lower end face of the valve plate contacted with the upper ends of the springs is higher than the upper end face of the valve base, and the second through hole is not plugged by the upper end face of the valve plate. According to the invention, the relationship between hydraulic pressure and spring force determines the position of the valve plate, further determining that whether the working chamber is communicated with an oil pool or not; pressure difference generated by a flow field when the when the hydrodynamic machine rotates can be sufficiently utilized for pressing lubricating oil into the working chamber from the oil pool; and forced lubrication devices do not need to be additionally arranged for rotating components including a lubricating bearing and an oil seal, thus designing and processing for complex lubricating components are saved, and finally cost and maintenance difficulty are reduced.
Description
【Technical field】 [0001] The invention relates to the technical field of hydraulic machinery, in particular to a valve structure used for lubricating a hydraulic retarder during idling. 【Background technique】 [0002] Hydraulic machinery is a mechanical device with fluid (liquid or gas) as the working medium and energy carrier. The working process of hydraulic machinery is to realize energy transfer or mutual conversion through the interaction between fluids, which includes energy conversion devices such as hydraulic couplings, hydraulic torque converters, and hydraulic retarders that use liquid as the working medium. Here, the hydraulic retarder is taken as an example. The working chamber of the hydraulic retarder is composed of a rotor with blades and a stator with blades. Braking is to use the control medium (most vehicles use the gas pressurized by the air compressor pump) to act on the working medium and press it into the working chamber. A reasonable angle impacts th...
Claims
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IPC IPC(8): F16N23/00
Inventor 王伟健孙博王凯峰付凤吉
Owner SHAANXI FAST GEAR CO