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中国大学MOOC工程机械底盘检修Maintenance of construction machinery chassis作业答案
工程机械底盘检修Maintenance of construction machinery chassis
学校: 九八五题库
学校: 超星学习通
题目如下:
1. 1. The input element of the torque converter is ().变矩器的输入元件为( )。
A. Pump wheel泵轮
B. turbine涡轮
C. Guide wheel导向轮
D. One-way clutch单向离合器
答案: Pump wheel泵轮
2. 2. The working wheel of the torque converter is mainly composed of ().液力变矩器的工作轮主要有( )组成。
A. Pump wheel泵轮
B. Guide wheel导轮
C. turbine涡轮
D. flywheel飞轮
答案: Pump wheel泵轮# Guide wheel导轮# turbine涡轮
3. 3. The structure type of ZF torque converter is (), and the structure type of Liugong torque converter is ().ZF变矩器的结构型式为( )、柳工变矩器的结构型式为( )。
A. Twin turbines, four components;双涡轮,四元件;
B. Single turbine, three components;单涡轮,三元件;
C. Twin turbines, five components;双涡轮,五元件;
D. Single turbine, four components;单涡轮,四元件;
答案: Twin turbines, four components;双涡轮,四元件;# Single turbine, three components;单涡轮,三元件;
4. 1. When shifting, the () fork is generally used to work at the same time.换档时,一般用( )拨叉同时工作。
A. A (bar)一根
B. Two sticks两根
C. Three roots三根
D. Both can均可
答案: A (bar)一根
5. 2. Which of the following gear ratios indicates overdrive? ( ) 下列哪个齿轮传动比表示超速档?( )
A. 2.15 :1
B. 1 :1
C. 0.85 :1
D. 以上都不表示
答案: 0.85 :1
6. 3. Which of the following is the role of the transmission ().以下哪个是变速器的作用( )。
A. Easy to shift便于换档
B. Deceleration and torque increase减速增扭
C. Drive train overload protection传动系过载保护
D. Smooth start平稳起步
答案: Deceleration and torque increase减速增扭
7. 4. For a five-speed transmission, the forward gear with the largest transmission ratio is ().对于五档变速器而言,传动比最大的前进档是( )。
A. First gear一档
B. Second gear二档
C. Fourth gear四档
D. five-speed五档
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
8. 5. The components used to ensure that the main shaft and the change gear are locked together at the same speed are ().保证传动轴与变速齿轮以同一速度锁紧在一起的部件有( )。
A. synchronizer同步器
B. Shift lever换档杆件
C. Shift fork换档拨叉
D. Transfer case分动器
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
9. 1. If the inner tooth ring of the single-row planetary gear mechanism is fixed, the sun wheel is the active part and the planetary frame is the slave part, it can be realized (). 单排行星齿轮机构的内齿圈固定,太阳轮为主动件,行星架为从动件,则可实现( )。
A. Gear down降速档
B. overdrive超速档
C. Direct gear直接档
D. Reverse gear倒档
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
10. 2. If the planetary gear frame of the single-row planetary gear mechanism is fixed, the sun wheel is the active part, and the inner tooth ring is the slave part, it can be realized (). 单排行星齿轮机构的行星齿轮架固定,太阳轮为主动件,内齿圈为从动件,则可实现( )。
A. Overdrive reverse超速倒档
B. Slow down and reverse减速倒档
C. Direct gear直接档
D. Neutral position空档
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
11. 3. The ZL50C transmission is a () power shift transmission.ZL50C变速箱是一种( )动力换档变速箱。
A. Fixed axle type定轴式
B. planetary行星式
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
12. 4. The structure type of ZF transmission is (), and the structure type of Liugong transmission type is ().ZF变速箱的结构型式为( )、柳工变速箱型的结构型式为( )。
A. planetary行星式
B. Fixed axle type定轴式
C. Floating shaft type浮动轴式
D. Belt drive带传动式
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
13. 5. In the planetary gear mechanism, only when one of the components below () is fixed, the planetary gear mechanism can realize the input and output of power.行星齿轮机构中,只有当固定下面的()其中的一个元件后,行星齿轮机构才能实现动力的输入和输出。
A. Sun wheel太阳轮
B. Planet gear行星轮
C. Planetary support行星支架
D. Gear ring齿圈
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
14. 6. The CLG856 adopts ZF transmission model () and Liugong transmission model ().CLG856采用的ZF变速箱型号为( )、柳工变速箱型号为( )。
A. ZF4WG180
B. ZF4WG200
C. ZF4WG310
D. BS305
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
15. 7. The gear number of the CLG856 loader with ZF transmission is (), and the gear number of the CLG856 loader with Liugong transmission is ().采用ZF变速箱的CLG856装载机的档位数为( )、采用柳工变速箱的CLG856装载机的档位数为( )。
A. 4 front and 4 back;4前4后
B. 4 front and 3 back;4前3后
C. 4 front and 2 back;4前2后
D. 2 before and 1 after;2前1后
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
16. 1. Rigid universals can be divided into unequal universals, quasi-constant universals and ().刚性万向节可分为不等速万向节、准等速万向节和( )。
A. Constant velocity universal joint等速万向节
B. Flexible universal joint饶性万向节
C. Differential lock差速锁
D. Movable universal joint活动万向节
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
17. 2. Two universals () are installed in order to achieve equiangular speed transmission of rigid cross-shaft universals.为实现刚性十字轴式万向节的等角速度传动,将两个万向节( )安装。
A. In parallel并联
B. Series connection串联
C. Fixed connection固联
D. weld焊接
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
18. 3. The cross-shaft journal of the cross-shaft rigid universal joint is generally ().十字轴式刚性万向节的十字轴轴颈一般都是( )。
A. hollow中空的
B. solid实心的
C. It doesn't matter.无所谓
D. A, B, and C are all incorrectA , B , C 均不正确
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
19. 4. In order to improve the strength and stiffness of the drive shaft, the drive shaft is generally made of ().为了提高传动轴的强度和刚度,传动轴一般都做成( )。
A. hollow空心的
B. solid实心的
C. Half empty, half solid半空、半实的
D. It doesn't matter.无所谓
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
20. 5. When the drive shaft is installed, the dust cover on the drive shaft should be equipped with a complete, and the lock of the two clamps should be staggered () assembly.传动轴装复时,传动轴上的防尘罩应配备齐全,并用卡箍紧固,两只卡箍的锁扣应错开( )装配。
A. 180°
B. 120°
C. 90°
D. None of the above is true以上都不对
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
21. 1. The motion characteristics and force transmission characteristics of the ordinary differential are ().普通差速器的运动特性和传力特性是( )。
A. Differential twist差速差扭
B. No differential twist不差速差扭
C. No differential speed, no differential twist不差速不差扭
D. Differential torque差速不差扭
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
22. 2. The drive axle consists of a main reducer, a differential, a half shaft and ().驱动桥由主减速器、差速器、半轴和 ( )等组成。
A. Universal drive shaft万向传动轴
B. transmission变速器
C. Drive axle housing驱动桥壳
D. clutch离合器
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
23. 3. The drive axle of the loader is driven by ().装载机驱动桥采用( )驱动。
A. Four wheels (two Bridges);四轮(双桥);
B. Two wheels (single bridge)两轮(单桥)
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
24. 4. The function of the main reducer is ().主减速器的作用是( )。
A. Torque reduction减小扭矩
B. Lower speed and increase torque降低转速增大扭矩
C. Increase speed增大转速
D. Increase adhesion增大附着力
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
25. 5. If the speed of the symmetrical bevel gear differential housing is n 0, the speed of the left and right half shaft gears is n 1 and n 2 respectively, then there is ().设对称式锥齿轮差速器壳的转速为 n 0 左、右两侧半轴齿轮的转速分别为 n 1 和 n 2 ,则有( )。
A. n 1 + n 2 = n 0
B. n 1 + n 2 =2 n 0
C. n 1 + n 2 = n 0
D. n 1 = n 2 = n 0
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
26. 6. When the speed of any half shaft gear is zero, the speed of the other half shaft gear is () times the speed of the differential housing.当任何一侧半轴齿轮的转速为零时,另一侧半轴齿轮的转速为差速器壳转速的( )倍。
A. 1
B. 2
C. 3
D. 4
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
27. 1. The rotating element of the shoe brake is ().蹄式制动器的旋转元件是()。
A. Brake shoe制动蹄
B. Brake drum制动鼓
C. Friction plate摩擦片
D. Brake disc制动盘
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
28. 2. For the pneumatic oil booster in the brake system, when the air pressure is 0.71~0.78MPa, the oil pressure at the outlet is about ().对于制动系统中的气推油加力器,当气压为0.71~0.78MPa时,出口的油压约为( )。
A. 10 Mpa;
B. 12 Mpa;
C. 8 Mpa;
D. 16 MPa
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
29. 3. Friction brakes can be divided into (). 摩擦式制动器可以分为( )。
A. Wheel type轮式
B. Shoe type蹄式
C. Band type带式
D. Disc type盘式
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
30. 4. The master cylinder of the brake system is mainly composed of ().制动系统气液主缸主要由()。
A. booster加力器
B. Brake wheel cylinder制动轮缸
C. brake制动器
D. Brake master cylinder制动主缸
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
31. 1. The steering wheel rotates around (). 转向轮绕着 ( )转动 。
A. knuckle转向节
B. King pin主销
C. Front beam前梁
D. frame车架
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
32. 2. Which of the following causes can cause mechanical steering systems to turn heavy ()?下列哪些原因会导致机械式转向系转向沉重( )。
A. The upper and lower bearings of worm are too tight蜗杆上下轴承调整过紧
B. Transmission pair meshing clearance is too large传动副啮合间隙过大
C. Steering shaft bending转向轴弯曲
D. Excessive tyre pressure轮胎气压过高
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。
33. 3. According to the classification of driving mode, the steering system can be divided into ().根据行驶方式分类,可将转向系分为( )。
A. Wheel steering轮式转向
B. Differential steering差速式转向
C. Front steering前轮转向
D. Track steering履带式转向
答案:请关注【九八五题库】微信公众号,发送题目获取正确答案。