Digital type assignment and regulating mechanism of low-speed and large-torsion hydraulic motor with crankshaft connecting rod
A low-speed, high-torque, hydraulic motor technology, applied in the field of mechanical engineering, can solve the problems of low mechanical efficiency and volumetric efficiency, achieve high volumetric efficiency and mechanical efficiency, simplify the structure and processing technology, and increase the flexibility of use and application range. Effect
Inactive Publication Date: 2011-02-09
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
The present invention uses a high-speed electromagnetic switch valve group to replace the digital flow distribution and speed regulating device formed by the traditional distribution shaft or distribution plate, fundamentally overcomes the inherent shortcomings of low mechanical efficiency and volumetric efficiency of the mechanical position control flow distribution method, and improves the performance of the hydraulic motor. Control and Regulation Features
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[0019] Such as Figure 1-4 As shown, the present embodiment includes: ten high-speed electromagnetic switch valves (1-10), electronic controller (12), angle encoder (19), encoder flange (20), elastic shaft coupling (21), The distribution valve block body (22), the skeleton oil seal (23), the angular contact ball bearing (24), the distribution connection shaft (25), and the high-speed electromagnetic switch valve are respectively arranged on the two vertical surfaces of the distribution valve block body, and the distribution connection shaft It is connected to the angle encoder through an elastic coupling, the angle encoder is connected to the encoder flange, the encoder flange is connected to the distribution valve block body, the angular contact ball bearing is connected to the encoder flange, elastic coupling, skeleton oil seal, The distribution connection shaft is coaxially arranged on the distribution valve block. The electronic controller is connected with the absolute va...
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The invention relates to a digital type assignment and regulating mechanism of a low-speed and large-torsion hydraulic motor with a crankshaft connecting rod, which is characterized in that high-speed electromagnetic switch valves are respectively arranged on the two perpendicular surfaces of an assignment valve block body; an assignment connecting shaft is connected with an angle encoder through an elastic coupling; the angle encoder is connected with an encoder flange; the encoder flange is connected with the assignment valve block body; an angular contact ball bearing, the encoder flange, the elastic coupling, a framework oil seal and the assignment connecting shaft are arranged on the assignment valve block body in a coaxial mode; an electronic controller is connected with the angle encoder and receives the signal of the angle encoder as an input signal; and the electronic controller is connected with the high-speed electromagnetic switch valves and outputs a PWM (Pulse Width Modulation) signal for driving the high-speed electromagnetic switch valves. The invention adopts the high-speed electromagnetic switch valves substitute for the traditional assignment shafts or assignment disks to form a digital type assignment and regulating device so as to fundamentally overcome the inherent defects of low mechanical efficiency and volumetric efficiency of a mechanical position control assignment mode and enhance the control and regulating characteristics of a hydraulic motor.
Description
technical field [0001] The invention relates to a flow distribution and speed regulation mechanism of a hydraulic motor in the technical field of mechanical engineering, in particular to a digital flow distribution and speed regulation mechanism of a crankshaft connecting rod low-speed high-torque hydraulic motor. Background technique [0002] Currently widely used crankshaft-connecting rod low-speed high-torque hydraulic motors are divided into two types of flow distribution, the radial shaft flow distribution mechanism and the end surface flow distribution mechanism, both of which are essentially mechanical position control flow distribution methods; and their structures are very complicated. The size requires high precision, and the machining is difficult, and the speed adjustment of the hydraulic motor cannot be realized. [0003] After searching the existing technical documents, it is found that the Chinese patent publication number CN2079226, the disclosure date is Jun...
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Inventor 施光林泮健
Owner SHANGHAI JIAO TONG UNIV