液压马达外文文献翻译、中英文翻译

1、外文资料In recent years, the hydraulic motor with brachytely and big torsional moment has great changes, the new structure continuously appears. But, all these hydraulic motors can be divided into two broad categories of single and multi-role according to the role of the number of plunger in each turn.

2、The motors also can be divided into radial and horizontal direction according to the arrangement of the plunger. And the radial motors can be divided into different types according to structure and the summon power way of the plunger.No matter single and multi-role, the plug-hole of radial-piston hy

3、draulic motor is equated by circle, arrayed radial. The plunger displaced by the impulse of pressure oil, then the volume of the cylinder changed, the summon power formed the rotation of the motor, all of these above are the mechanism of action of the motors.The rotor of the single role hydraulic mo

4、tor has a circle of rotation, each plunger worker once reciprocation. The principal axis is eccentric axis in all the radial-piston hydraulic motors. The multi-role hydraulic motor had a guide rail curve, whose numbers are the action times. The rotor had a circle of rotation, the plunger worker many

5、 times reciprocal at the same time. The radial motors can be divided into several categories of plunger, ball blocker, blade.The structure of the single-role motors is simpler, the machine element number of it is less, the technology is better, and the cost is less. But the structure dimension of th

6、e single-role motor is longer than the multi-role motor in the same displacement each turn (or output torsional moment), and the single-role motor also have fluctuation of the output torsional moment and rotary speed.The homonymy high-pressure column tune of the single-role motor had major radial un

7、balance force that causes the brachytely stabilization of the motor became worse. Only increasing the capacity of the bearing, it can meet the requirements of the operating life of the bearing at the same time.Generally speaking, the speed of single-role motors is higher than the multi-role in the s

8、ame displacement because of the work feature of the single-role motors. The structure of the multi-role motors is complicated than single-role, the number of machine element is bigger as well. Some machine element needs some special equipment to process them. The heat treatment of the guide rail is

9、more difficult. And the selection of the texture parameters in design is more difficult and harder. The cost is higher without a doubt.But the multi-role motor output larger torsional moment and had lighter weight of unit power in the same working pressure. The radial force of hydraulic motor can co

10、mpletely equilibrate and had higher started torsional moment efficiency as long as selecting the suitable plunger number and action number. In abstract the pulsation work of output torsional moment would be zero if one select guide rail curve reasonable and assign argument to the principle of non-pu

11、lsation in design. All of these can made its low speed stability better.People manufactured many new types of hydraulic motor in recent years. The structure of old motor refreshes and develops continuously. The motors life and performance are raised but the cost is dropped as well. Various kinds of

12、brachytely big torque hydraulic motors utilized more than 60 main frame extensively because their strong competitive ability.Multi-role within the curve of the radial piston hydraulic motor is divided into transmission plunger, beam transmission, wheel transmission .The most used are Beam transmissi

13、on and Wheel Transmission motor .the france Crane Park motor produces the most ,the Rated working pressure is 30 MPa in all the Low Speed and High Torque motors Crane Park motor has the highest working pressure Recently , end assignment wheel motors is developed ,and the function was greatly improve

14、d . In recent years, Accompanied by Ball Cypriot Vice static and dynamic pressure bearing theory developed, Multi-role Radial ball plug Hydraulic Motor Developed quickly , such as Japans HMA series . Which are widely used in engineering and architecture. The hydraulic motor with brachytely and big t

15、orsional moment , commonly can be designed into Rotating shell or Axis rotation ,they are named shell motor . shell motor that build in the Wheel rim is called Wheel motor ,which direct drive the wheels ,can replace the gear drive and make up the Hydraulic drive axle .In the 1970s , engineering Mach

16、ine ,architecture Machine, mine Machine and Watercraft Deck Machine etc all use sap pressure technology .The element that advance the hydraulic motor with brachytely and big torsional moment has sharply increased to 40s . Variety species and main engine application has developed greatly .but most fo

17、r the main engine factory. Because losing the main knowledge of kinematic pair .The using were still remain in mapping ,imitation and Experience in analog design manufacture were still in Groping .so although we have many Developers ,there are still no one hydraulic motor passed the appraisement . t

18、he hydraulic motor with brachytely and big torsional moment . However，Imitation and digestion of foreign products, can provides us a useful design and manufacturing experience. From 1974, Multi-role inner curve oil hydraulic motor Spot Turn NJM and Cranked shell model NKM etc were worked out and des

19、igned .There are some species in Spot Turn series , after experience according to JB 2148-77 standard and pass the qualification ,we can produce in quantity in fixed-point .In NJM hydraulic motor, guide rail is Sectional Type , according to discharge capacity, the succession has 16 discharge capacit

20、y species .this kind of motor has a good efficiency ,and the experiencing duration of life has exceeded 5000h.中文译文 近年来，低速大扭矩液压马达有了较大的发展，新结构不断出现。但是，所有这些液压马达，根据每转中柱塞副的作用次数。可以分为单作用和多作用两大类。按柱塞的排列方式，每一类可以分为径向式和轴向式两种。按结构特点和柱塞副不同的传力方式，径向式马达又可以分成不同的类型。径向柱塞式液压马达，无论是单作用或多作用，柱塞孔在缸体中沿圆周等分，按径向放射状排列。作用原理都是压力油推动柱塞

21、位移，产生缸孔容积变化传力形成马达的转动。 但是，单作用和多作用液压马达在工作特点上又有很大不同。 单作用液压马达，转子旋转一周，每个柱塞往复工作一次。所有径向柱塞式单作用液压马达，主轴是偏心轴。多作用液压马达，设有导轨曲线，曲线的数目就是作用次数。转子旋转一周，每个柱塞往复工作多次。根据柱塞副的不同结构，径向式马达又分成柱塞式、球塞式和叶片式多种。单作用马达结构比较简单，零件数目少，工艺性较好，造价较低。但是，在每转排量(或输出扭矩)相同的情况下，与多作用马达比较，结构尺寸增大，存在输出扭矩与转速的脉动。在工作中，单作用马达高压柱塞腔在同侧，出现比较大的径向不平衡力，使马达的低速稳定性变差。

22、同时，为了满足马达轴承工作寿命的要求，只有增大轴承的容量。一般情况下，由于单作用马达的工作特点，允许比同排量的多作用马达有较高的转速。多作用液压马达的结构，一般都比单作用马达复杂，零件数也略有增加。个别零件(如导轨)的加工需要专用设备，导轨热处理比较困难，设计中结构参数的选择也比单作用马达困难、复杂，制造成本较高。但是，在相同的工作压力下，多作用马达能输出更大的扭矩，单位功率的重量较轻。而且只要柱塞数和作用数选取合适，可以使液压马达的径向力完全平衡，具有较高的启动扭矩效率。设计中，合理选取导轨曲线，并按无脉动原则分配幅角，理论上都能做到输出扭矩的脉动功为零。因而可以获得更好的低速稳定性。近年来，国外研制