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意大利Riva Calzoni公司生产的液压马达,设计较新,结构独特,见图1。该马达是去除了活塞杆、活塞、滑履等常用机械部件,而代之以柱状杆和导向缸,由于柱状杆始终在油液中,因此使动摩擦阻力大为减小。导向缸二端分别与马达外壳及偏心转轴保持球面接触,接触面上的密封能力随缸内压力的大小而变化。由于不采用连杆结构而消除了横向分力,因此可以避免缸筒的磨损变形(椭圆形)。采用这种结构的马达和同参数的其它类型马达相比,重量和体积都明显减小,在低速高压情况下机械效率和容积效率都较高,因此这种马达在较大的转速范围内都可以保证低能耗,在带负荷运转时保持匀速高效。现将该公司(法国和西德分公司)该类产品
Italy Riva Calzoni company’s hydraulic motor, design newer, unique structure, shown in Figure 1. The motor is to remove the piston rod, piston, slipper and other commonly used mechanical components, and instead of the columnar rod and guide cylinder, the columnar rod is always in the oil, so that the dynamic frictional resistance is greatly reduced. The two ends of the guide cylinder are respectively in spherical contact with the motor housing and the eccentric shaft, and the sealing ability on the contact surface varies with the pressure in the cylinder. Since the lateral force component is eliminated by the use of the connecting rod structure, it is possible to avoid wear deformation (oval) of the cylinder bore. Compared with the other types of motors with the same parameters, the weight and volume of the motor with this structure are obviously reduced, and the mechanical efficiency and volumetric efficiency are high under the conditions of low speed and high pressure. Therefore, the motor has a large speed range Can ensure low energy consumption, keep the uniform and efficient in the load operation. Now the company (France and West Germany branch) such products