什么是单油楔滑动轴承？单油楔滑动轴承指只有一个油楔产生油膜压力的轴承。

什么是单油楔滑动轴承？<br><br>单油楔滑动轴承指只有一个油楔产生油膜压力的轴承。<br><br>这种轴承工作时，如果轴颈受到某些微小干扰而偏离平衡位置，使其难于自动恢复到原来的平衡位置，则轴颈将作一种新的有规则或无规则的运动，这种状态称为轴承失稳。<br><br>为了提高轴承的工作稳定性和旋转精度，常把轴承做成多油楔形状，和单油楔轴承相比，多油楔轴承稳定性好，旋转精度高，但承载能力低，摩擦损耗大。它的承载能力等于各油楔中油膜力的向量和。<br><br>单油楔滑动轴承的特点：<br><br>承载能力大，但稳定性差（轴颈在外部干扰力作用下易偏离平衡位置），因此采用多楔滑动轴承的特点：稳定性好，承载能力稍低，承载能力等于各油楔承载力矢量。<br><br>什么是多油楔滑动轴承？<br><br>支撑轴承有三块或多块内表面浇有巴式合金的瓦块，瓦块沿轴径外圆周均匀分布，瓦块在结构上能就地摆动。工作中可形成多个油楔，这样的轴承叫多油楔轴承。<br><br>多油楔轴承有以下几个特点：<br><br>（1）抗振性能好，运行稳定，能够减轻转子由于不平衡或加工安装误差造成的震动危害；<br><br>（2）在不同的负荷下，多油楔轴承中轴颈的偏心度比普通轴承小得多，保证了转子的对中性；<br><br>（3）当负荷与转速有变化时，瓦块能自动调节位置，以保证有最好的润滑油楔，所以温升不高。<br><br>多油楔滑动轴承类型：<br><br>多油楔滑动轴承按瓦面是否可调分为:椭圆轴承、固定式三油楔轴承和可倾瓦多油楔轴承。固定瓦轴承和椭圆轴承为双向回转，双油楔，错位轴承为单向回转?；可倾瓦轴承用来可调节轴瓦与轴颈间间隙，稳定性好，但承载能力低于固定瓦轴承。<br><br>(a) is an elliptical bearing. During operation, two dynamic pressure oil films can be formed up and down, which helps to improve stability. The processing of this type of bearing is also relatively easy. Put a certain thickness of gasket on the split surface of the bearing, press the circular boring hole, then remove the gasket, and the upper and lower parts are the elliptical bearing. <br><br>(b) It is a fixed three-oil wedge bearing. During operation, three dynamic pressure oil films can be formed, which improves the rotation accuracy and stability. The fixed three oil wedge bearing only allows the journal to rotate in a fixed direction. <br><br>(c) is a tilting paddle oil wedge bearing. The bearing bush is composed of more than three (usually odd) fan-shaped blocks. The bearing bush is supported by screws with ball ends. During one-way rotation, the fulcrum is not placed in the center of the bearing bush and is all biased to the same side of the NSK bearing. As the operating conditions change , The tilt of the bearing bush can be adjusted automatically to adapt to different loads, speeds, elastic deformation and deflection of the shaft, and establish a liquid friction state

什么是单油楔滑动轴承？<br><br>单油楔滑动轴承指只有一个油楔产生油膜压力的轴承。<br><br>这种轴承工作时，如果轴颈受到某些微小干扰而偏离平衡位置，使其难于自动恢复到原来的平衡位置，则轴颈将作一种新的有规则或无规则的运动，这种状态称为轴承失稳。<br><br>为了提高轴承的工作稳定性和旋转精度，常把轴承做成多油楔形状，和单油楔轴承相比，多油楔轴承稳定性好，旋转精度高，但承载能力低，摩擦损耗大。它的承载能力等于各油楔中油膜力的向量和。<br><br>单油楔滑动轴承的特点：<br><br>承载能力大，但稳定性差（轴颈在外部干扰力作用下易偏离平衡位置），因此采用多楔滑动轴承的特点：稳定性好，承载能力稍低，承载能力等于各油楔承载力矢量。<br><br>什么是多油楔滑动轴承？<br><br>支撑轴承有三块或多块内表面浇有巴式合金的瓦块，瓦块沿轴径外圆周均匀分布，瓦块在结构上能就地摆动。工作中可形成多个油楔，这样的轴承叫多油楔轴承。<br><br>多油楔轴承有以下几个特点：<br><br>（1）抗振性能好，运行稳定，能够减轻转子由于不平衡或加工安装误差造成的震动危害；<br><br>（2）在不同的负荷下，多油楔轴承中轴颈的偏心度比普通轴承小得多，保证了转子的对中性；<br><br>（3）当负荷与转速有变化时，瓦块能自动调节位置，以保证有最好的润滑油楔，所以温升不高。<br><br>多油楔滑动轴承类型：<br><br>多油楔滑动轴承按瓦面是否可调分为:椭圆轴承、固定式三油楔轴承和可倾瓦多油楔轴承。固定瓦轴承和椭圆轴承为双向回转，双油楔，错位轴承为单向回转?；可倾瓦轴承用来可调节轴瓦与轴颈间间隙，稳定性好，但承载能力低于固定瓦轴承。<br><br>(a)为椭圆轴承，工作时，可形成上下两个动压油膜，有助于提高稳定性。这类轴承的加工也比较容易，在轴承的剖分面上垫上一定厚度的垫片，按圆形镗孔，然后撤去垫片，上下合拢即为椭圆轴承。<br><br>(b)为固定式三油楔轴承，工作时，可形成三个动压油膜，提高了旋转精度和稳定性。固定式三油楔轴承只允许轴颈沿一个固定的方向回转。<br><br>(c)为可倾瓦多油楔轴承。轴瓦由三片以上(通常为奇数)的扇形块组成，轴瓦由带球端的螺钉支承着，单向回转时，支点不安置在轴瓦正中而都偏向同一侧的NSK轴承，随着运转条件的改变，轴瓦的倾斜都可自动调整，以适应不同的载荷、转速、轴的弹性变形和偏斜，建立起液体摩擦状态

What is single oil wedge sliding bearing?<br>Single oil wedge sliding bearing refers to the bearing with only one oil wedge producing oil film pressure.<br>When this kind of bearing works, if the journal deviates from the balance position due to some minor interference, making it difficult to automatically restore to the original balance position, then the journal will make a new regular or irregular movement, which is called bearing instability.<br>In order to improve the working stability and rotating accuracy of bearings, bearings are often made into multi wedge shape. Compared with single wedge bearings, multi wedge bearings have good stability and high rotating accuracy, but low bearing capacity and large friction loss. Its bearing capacity is equal to the vector sum of oil film forces in each wedge.<br>Features of single oil wedge sliding bearing:<br>The bearing capacity is large, but the stability is poor (the journal is easy to deviate from the balance position under the action of external interference force). Therefore, the multi wedge sliding bearing features good stability, slightly low bearing capacity, and bearing capacity equal to the bearing capacity vector of each oil wedge.<br>What is a multi wedge sliding bearing?<br>There are three or more supporting bearings with inner surface cast with Ba alloy tiles. The tiles are evenly distributed along the outer circumference of the shaft diameter, and the tiles can swing in place on the structure. Many oil wedges can be formed in operation. Such bearings are called multi oil wedge bearings.<br>The multi oil wedge bearing has the following characteristics:<br>(1) It has good anti vibration performance and stable operation, which can reduce the vibration hazard of rotor caused by imbalance or processing and installation error;<br>(2) Under different loads, the eccentricity of the journal in the multi oil wedge bearing is much smaller than that of the common bearing, which ensures the rotor to be neutral;<br>(3) When the load and speed change, the pad can automatically adjust the position to ensure the best lubricating oil wedge, so the temperature rise is not high.<br>Multi wedge sliding bearing type:<br>Multi oil wedge sliding bearing can be divided into elliptical bearing, fixed three oil wedge bearing and tilting multi oil wedge bearing. The fixed bearing and elliptical bearing are of two-way rotation, double oil wedges, and the misplaced bearing is of one-way rotation?; the tilting bearing is used to adjust the clearance between the bearing bush and the shaft neck, with good stability, but its bearing capacity is lower than that of the fixed bearing.<br>(a) It is an elliptical bearing. When working, it can form two dynamic oil films, which is helpful to improve the stability. The processing of this kind of bearing is also relatively easy. Put a certain thickness of gasket on the split surface of the bearing, boring according to the circle, and then remove the gasket. The upper and lower closure is the elliptical bearing.<br>(b) For the fixed three oil wedge bearing, three dynamic oil films can be formed during operation, which improves the rotation accuracy and stability. The fixed three oil wedge bearing only allows the journal to rotate in a fixed direction.<br>(c) It is a tilting pad multi oil wedge bearing. The bearing bush is composed of more than three (usually odd) fan-shaped blocks. The bearing bush is supported by screws with ball end. When the bearing rotates in one direction, the fulcrum is not placed in the middle of the bearing bush, but all of them are inclined to the same side of NSK bearing. With the change of operation conditions, the inclination of the bearing bush can be automatically adjusted to adapt to different loads, rotating speeds, elastic deformation and deflection of the shaft, and establish the state of liquid friction