JB/T 9717.1-1999 JB/T 9717.1-1999 Wheeled Engineering Machinery Drive Axle Terminology JB/T9717.1-1999 Standard download decompression password: www.bzxz.net

ICss3.100
Machinery Industry Standard of the People's Republic of China
J3/T 9717,1—1999www.bzxz.net
Wheel construction machinery
Drive axle terms
1999-08-06 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB17.1-1999
4 This standard is a revision of 2nd Standard 38301-89 Wheel Construction Machinery. During the revision, editorial changes were made to the original standard, and the definitions of some technical terms were rectified or revised. This standard replaces 2nd Standard J830t1-89 from the date of implementation. This standard was proposed and approved by the Technical Committee for Standardization of Machinery Industry. This standard was drafted by Tianjin Engineering Machinery Research Institute and Longyan Engineering Machinery Factory. The main initiators of this standard are Liu Zongchou and Tong Chanling. This standard was first issued on May 13, 1989. The scope is Machinery Industry Standards of the People's Republic of China. Wheeled Engineering Machinery. Drive Axle. Glossary
Wheel construction machinery-Drive axle terms
This standard specifies the terms for the performance of a wheeled mechanical axle assembly or its main seasonal components. This standard applies to the dynamic axle of a wheeled mechanical axle. 2 Terminology of drive axle assembly
2.1 Drive axle
FB/T 9717.1—1999
1. As a component of the chassis transmission assembly, the weak dynamic axle of a wheeled mechanical axle can be used to support the weight of a wheeled mechanical axle, further increase the torque input from the transformer and change the direction to transmit it to the suction wheel, so as to achieve the torque required for the wheel to overcome the resistance, and also have a differential effect to ensure the normal travel of the wheeled mechanical axle. 2.2 General drive axle Drive axle:
Its right single-stage card transmission or two-stage half transmission and differential and wheel side speed reducer drive correction. 2.3 Steering drive axle is a drive axle that also plays a steering role.
3 Main parts of the drive axle terminology
The drive axle is composed of the main drive, differential, half shaft. Wheel side speed reducer and bridge light and other bearing components: 3.1 Reducer final The transmission belt is located in the middle of the bridge housing. It is a device that reduces the input torque, increases the torque and changes the torque transmission direction, and transmits the power to the semi-auxiliary and wheel-side deceleration.
3.L.1 Single-stage main drive is a taxi reducer composed of a pair of gears. The main drive adopts a pair of circular teeth or hyperbolic teeth. .1.2 Duubtereduetion final drive is a reduction gear for the output wheels, usually composed of a relay gear pair and a cylindrical gear pair. 3,2 Differential
It is a mechanism that enables the left and right wheels of the same drive to rotate at different angular speeds when driving on a curve or uneven road, and transmits torque. .2. Bevel gear differential is a speed reducer composed of a dual gear mechanism. 3,2.2 Anti-slip differential A differential that can prevent the drive wheel from hitting the gear by locking it. The State Soviet Machinery Industry Bureau approved 20MM (-01-implemented on August 6, 1999) JBY9717.1-1999 a) Forced locking differential A differential group equipped with an artificial locking mechanism. b) Cam slider white lock differential Self-locking differential with sidc ring and redial camplale A self-locking differential composed of inner and outer cams and sliders. 3.3 Axle sha is a solid shaft that transmits the torque from the speed reducer or square reducer to the wheel or wheel-side planetary reducer, and some also play a supporting role. 3. 3. 1 Fully floating axle fuloating axle ghaft only transmits the short half cat.
3. 3. 2 Half-axle SCMI-floting axle SHAT A half-axle that transmits reverse torque and bears 2 bending moments.
3,3,3 Three-quarter floating parallel axle Lhrec-quurlerllusting axle Shall A half-axle that transmits reverse torque and bears less bending moments. 3.4 Wheel-side planetary reducer wheelreduciorrhubredtclor A planetary gear reduction mechanism arranged near the wheel, 3. Axle housing
Install the main drive belt, reducer, half shaft, wheel-side planetary reducer and other parts, and connect with the frame, support the wheel type 1-stage mechanical blade, and transmit various forces on the wheel to the frame components through the disc frame brush connection. 3.5.1 Separate carrier-type axle housing is a bridge housing that is integral with the main frame and bolted together at the junction of two or more castings. 3.5.2 Rumpet-rype axle housing or split axle housing is a bridge housing that is manufactured separately from the swashplate housing and then connected together. 3.5.3 Unitized carrier-type axle housing is a bridge housing that is integral with the main frame and fixed at both ends by steel penetration. Terminology of drive axle performance specification
J! Drive axlemaximuminpu1torque is the maximum torque transmitted to the input shaft of the main reduction end when the transmission is in the first gear according to the maximum net output torque of the engine (i.e., the large torque ratio working condition).
4.2 Drive axle maximum torque driveaxicmaximumgliptoquo refers to the torque when the drive wheel slips. Its value is the product of the axle capacity when the drive axle is fully loaded, the maximum adhesion between the tire and the ground, and the rolling radius of the tire.
4.3 Drive axle rated load capacity driveaxleratingaxlccapacity is the load capacity specified by the manufacturer taking into account factors such as material strength and tire load. 4.4 Drive axle rated (allowable) torque driveaxleallowbleinpullorqu is the torque specified by the manufacturer taking into account fatigue strength. 4.5 Rated (diagnostic) drive axle output torque drive axle allowable output torque The output torque of the weak drive axle specified by the manufacturer, taking into account fatigue strength. 2
JB/T 9717.1—1999
4.6 Differential locking coefficient differential locking coefficient The ratio of the torque of the slow-turning wheel to the torque of the fast-turning wheel. 4. Drive axle speed ratio drive axle ratio The ratio of the main reducer input to the wheel speed under non-acceleration conditions. When there is no wheel deceleration, the drive axle reduction ratio is equal to the main reducer reduction ratio: when there is wheel deceleration, the drive axle reduction ratio is equal to the product of the main reducer reduction ratio and the wheel reducer reduction ratio. 4.8 Drive axle efficiency (%)·driveaxle efficiencyDrive axle efficiency=
4.9 Drive axle massDrive axle torque
Drive axle box extension
Drive axle input torque x
Drive axle input speed
Drive axle speed
Except for the engine oil and lubricating oil, the drive axle system includes wheels, brakes, and sometimes also couplings, half shafts and joints.
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