How many transmission modes are there for the trolley running mechanism?

The transmission mode of the overhead crane trolley running mechanism is mainly divided into centralized drive and separate drive.

Centralized drive is divided into two types: fast (high speed) and slow (low speed). The high-speed centrally driven cart running mechanism is directly connected with the coupling and the transmission shaft by the motor through the brake wheel, and the reducer is at both ends of the main beam platform. The transmission shaft speed of this running mechanism is high, the transmission torque is small, and the size of the transmission shaft and shafting parts is also small, and the weight of the transmission mechanism is light.

The low-speed centrally driven cart running mechanism is directly connected with the reducer by the motor through the brake wheel, and the reducer is in the middle of the main beam walkway. The characteristics of this transmission mode are that the transmission shaft speed is low and relatively safe, but the transmission shaft torque is large, so the size of some parts is larger, which makes the whole mechanism heavier.

Separate drive is to install two sets of identical but unconnected drive devices on the overhead crane. Its characteristic is that the transmission shaft is omitted and the self-weight of the running mechanism is reduced, and because of the good grouping, the installation and maintenance are very convenient.

There are two transmission modes of the trolley, namely, the reducer is located in the middle of the trolley driving wheel, or the reducer is located on the side of the trolley driving wheel. The trolley transmission mode of the reducer is located in the middle of the trolley driving wheel, so that the torque borne by the output shaft of the trolley reducer and the transmission shafts on both sides is relatively uniform. The reducer is located on the side of the trolley driving wheel, and the installation and maintenance are more convenient, but the trolley body has the phenomenon of left and right twisting when starting the car.

There are two transmission modes of the trolley running mechanism: centralized drive (transmission) and separate drive (transmission). (1) Centralized drive:

A transmission mode in which a motor transmits the rotating torque to the driving wheels of two large cars through the transmission shaft device. There are three forms of centralized drive: low-speed centralized drive, medium-speed centralized drive, and high-speed centralized drive.

2) Separate drive: two motors at both ends of the cart transmit the rotating torque to the driving wheels at both ends of the cart through the transmission device. In fact, there are two identical but independent transmission systems.

The braking torque of the two sets of brakes with separate drive modes should be adjusted to be basically the same. Its advantages are to reduce the total mass of the crane, make the cart drive train relatively compact, the platform is spacious, and the installation and maintenance are convenient, and it is now widely used in cranes.

The automobile transmission system is mainly composed of a clutch, a transmission, a universal transmission, a final reducer, a differential and a half shaft.

The transmission operating system used in the driving process of the automobile is composed of a clutch, a transmission, a universal transfer transmission equipment and a related drive axle, that is, the power transmission equipment that connects the engine and the four-wheel drive of the car. The main application functions of the transmission operating system of the car include the function of promoting the car to start, the speed change function, the function of mainly slowing down the speed and the differential function, etc., so as to give the car in the process of driving with sufficient traction and driving speed change, and then can smoothly ensure that the driving car can run and drive more safely and stably.

The automotive transmission system is composed of a series of crankshafts, flywheels, clutches, transmissions, transmission shafts, drive axles, etc., with elasticity and moment of inertia. The power is output through the engine, through the clutch, the transmission torque increase and shift, the transmission shaft, the final reducer, the differential, and the half shaft are transmitted to the driving wheels.

The transmission system is generally composed of a clutch, a transmission, a universal transmission, a final reducer, a differential and a half shaft.

Its basic function is to transmit the power emitted by the engine to the driving wheels of the car, generating driving force so that the car can drive at a certain speed.

For front-mounted and rear-wheel drive cars, the torque emitted by the engine is transmitted to the rear wheels through the clutch, gearbox, universal joint, transmission shaft, final reducer, differential, and half shaft, so the rear wheels are also called drive wheels. The driving wheel gets torque and gives the ground a backward force, and thus causes the ground to produce a forward reaction force on the driving wheel, which is the driving force of the car. The front wheels of the car generally have no direct power connection with the drive train, so they are called driven wheels.

Composition and its function:

The usual components are clutches, transmissions, universal transmissions, final drives, differentials and half shafts, etc., and the main role of the transmission system is to use the power emitted by the engine to transmit to the driving wheels, so as to make the car run normally.

The functions of the transmission system are more, including deceleration, speed shifting, reversing, interrupting power, inter-wheel differential and inter-axle differential, etc., mainly working together with the engine, so that the car can drive normally no matter what the situation, so that the car can maintain good power and economy.

The clutch is only available in manual transmission cars, which can gradually engage the engine and transmission system, so that the car can start smoothly, and can also disconnect the engine from the drive train, which is more convenient for the engine to start and the transmission to shift.

The transmission system must choose a good lubricating oil:

Most of the losses in the transmission system come from the mechanical transmission of the transmission and final drive. The sound and heat of the transmission, the improper adjustment of the tightness of the gear bearing in the final reducer, or the clutch slippage, which causes the clutch assembly to heat up and the driven disc to burn, will cause the power consumption to increase.

This part of the power will be converted into heat and dissipated into the air, resulting in the reduction of the work efficiency of mechanical parts, and even causing damage to parts. Therefore, it is very important to choose the appropriate lubricant to prevent damage to the parts caused by excessive friction.

Improper selection of transmission system lubricating oil, such as the viscosity, wear resistance and viscosity temperature characteristics of the oil, can not meet the requirements of different seasons and different use conditions, and will also cause the reduction of transmission efficiency. For example, under the same conditions, when using summer lubricating oil in winter, due to high viscosity and poor lubricity, the friction resistance between various parts increases, which in turn leads to a decrease in transmission efficiency.

The transmission system is mainly composed of clutch, transmission, transfer case, transmission shaft, universal joint, reducer, differential, half shaft and other components, and the function of the transmission system is to transmit the power output of the engine to the driving wheels and drive the car.

Hello, the composition of the automobile drive train includes clutch, transmission, transmission shaft, final reducer, differential and half shaft and other parts. The function of the automobile drive train is to ensure that the car has the necessary traction and speed under various driving conditions, as well as to ensure the coordinated change between traction and vehicle speed, so that the car has good power and fuel economy; It should also ensure that the car can reverse, and that the left and right drive wheels can adapt to the differential requirements, and that the power transmission energy pattern needs to be smoothly combined or completely and quickly separated.

A power train system is a device that transmits power between the engine and the wheels of a car.

1) It is composed of a clutch, a transmission, a universal transmission device, and a drive axle (final reducer, differential, and half shaft).

2) The role of each device:

Clutch: It can cut off or engage the engine power transmission, which plays the following three roles: 1) to ensure the smooth start of the car; 2) Ensure smooth work when shifting; 3) Prevent the drive train from overloading.

The transmission is composed of a transmission mechanism and a control mechanism. What it does:

Changing the gear ratio expands the range of drive wheel torque and speed to adapt to frequently changing driving conditions and to enable the engine to work under favorable conditions (higher power and lower fuel consumption).

Under the premise that the direction of rotation of the engine remains unchanged, the car can drive backwards.

Neutral gear is used to interrupt power delivery to allow the engine to start, idle, and facilitate transmission shifts or power take-off.

The universal transmission device is composed of a cross shaft, a universal joint and a transmission shaft. Function: Variable angle transmission power, that is, the transmission of power between two axes where the axes intersect but often change their positions with each other.

Drive axle: It is composed of a final reducer, a differential, a half shaft, etc.

The function of the final reducer: reduce the speed and increase the torque; Change the direction of power transmission (power is transmitted from the longitudinal direction, through the final reducer, and laterally to the drive wheels).

The function of the differential: to make the left and right driving wheels produce different speeds, which is convenient for the car to turn or drive on uneven roads.

The function of the half-shaft is to transmit a short torque between the differential and the drive wheels.

Transmission is divided into electrical transmission and mechanical transmission.

The electric drive is the frequency converter.

Mechanical transmissions include: gears, cardan shafts, chains, belts, shafts, friction wheels, airbags, couplings.

Gear drive (mechanical watches), chain drive (bicycle), belt drive (car starter).

belt drive; chain drive; Gear drive, lead screw drive, etc.

We use Siemens and ABB.

The drive train is generally composed of a clutch, a transmission, a universal transmission, a final reducer, a differential and a half shaft.

Front rear wheel drive (FR): clutch, transmission, universal joint, propeller shaft, drive axle (final drive, differential, half shaft), wheels.

Front-wheel drive (FF): clutch, transmission, transaxle, wheels.

Rear-mounted rear-wheel drive (RR): clutch, transmission, angular drive, cardan drive, transaxle, wheels.

Mid-mounted rear-wheel drive (MR): clutch, transmission, angular drive, cardan drive, transaxle, wheels.

All-wheel drive (NWD): clutch, transmission, universal joint, propeller shaft, transfer case, front transaxle, rear transaxle, wheels.

The automobile drive train is generally composed of a clutch, a transmission, a universal transmission, a final reducer, a differential and a half shaft.

1. Clutch function: 1. The clutch can gradually combine the automobile engine with the transmission train to ensure the smooth start of the car; 2. The clutch can temporarily cut off the connection between the engine and the transmission train, which is convenient for the start of the engine and the shift of the transmission, so as to ensure the smooth work of the drive train when shifting; 3. The clutch can also limit the transmitted torque and prevent the drive train from overloading.

2. Functions of the transmission: 1. Realize variable speed and torque; 2. Realize the reverse driving of the car; 3. Interrupt power transmission when necessary; 4. Achieve power output.

3. Universal transmission function: transmit power between the shafts that often change the angle and relative position between any pair of axles on the car.