What is the role of the clutch fork

1. Ensure a smooth start of the car.

This is the primary function of the clutch. Before the car starts, it is natural to start the engine first. Whereas, when the car starts, the car accelerates gradually from a completely stationary state.

If the drivetrain (which links the entire car) is rigidly connected to the engine, the car will suddenly rush forward as soon as the transmission is engaged, but it will not start. This is because when the car moves from standstill to forward, it generates a large inertial force, which causes a large drag torque to the engine. Under the action of this inertial drag torque, the engine speed drops sharply to below the minimum stable speed (generally 300-500rpm) in an instantaneous time, and the engine is turned off and cannot work, and of course, the car cannot start.

That's why we need the help of the clutch. After the engine starts, before the car starts, the driver first presses the clutch pedal, disengages the clutch, disengages the engine and the drive train, and then puts the transmission into gear, and then gradually releases the clutch pedal to make the clutch gradually engaged. In the process of engagement, the drag torque of the engine gradually increases, so the accelerator pedal should be gradually pressed at the same time, that is, the fuel supply to the engine should be gradually increased, so that the speed of the engine is always maintained at the lowest stable speed without stalling.

At the same time, because the tightness of the clutch gradually increases, the torque transmitted by the engine to the driving wheel through the drive train gradually increases, and when the traction force is enough to overcome the starting resistance, the car starts to move from standstill and gradually accelerates 2, ensuring that the drive train works smoothly when shifting.

2: Achieve smooth shifting.

In the process of driving, in order to adapt to the changing driving conditions, the drive train often has to change different gears to work. To realize the gear shift of the gear transmission, it is generally to toggle the gear or other gear mechanism, so that a gear pair of the original gear is pushed out of the transmission, and then the gear pair of another gear is put into the work. Before shifting gears, the clutch pedal must be stepped on, and the power transmission is interrupted, so that the meshing pair of the original gear can be disengaged, and the speed of the meshing part of the new gear meshing pair is gradually synchronized, so that the impact when entering the meshing can be greatly reduced, and a smooth shift can be realized.

3. Prevent overload of the drive train.

When the car is braking urgently, if there is no clutch, the engine will be rigidly connected with the drive train and reduce the speed sharply, so all the moving parts will produce a large moment of inertia (its value may greatly exceed the maximum torque emitted by the engine when working normally), causing more than its bearing capacity to the drive train, and causing damage to the parts. With a clutch, it is possible to rely on the relative movement that may occur between the active and driven parts of the clutch to eliminate this danger. Therefore, we need a clutch to limit the maximum torque that the drivetrain can withstand and ensure safety.

Clutches can be divided into: friction clutches, or the use of liquid as the transmission medium (i.e., fluid couplings), or the use of magnetic transmission (i.e., electromagnetic clutches}

It is the part that separates the clutch plate from the clutch thrower

Promote the release bearing to do axial movement, and control the clutch main and slave disc to be smoothly separated, so as to achieve the effect of clutching.

The role of the clutch on the car.

1. It is conducive to the start of the car.

The car is stationary before starting, because the engine and the gearbox are rigidly connected, once the gear is hooked, the car will suddenly rush forward due to the sudden connection of power, which will not only cause damage to the parts, but also the driving force is not enough to overcome the huge inertia force generated by the car forward, so that the engine speed drops sharply and stalls.

If the clutch is used to temporarily separate the engine and the gearbox at the start, and then the clutch is gradually engaged, because there is a slip grinding phenomenon between the active part of the clutch and the driven part, the torque transmitted by the clutch can gradually increase from zero, and the driving force of the car also gradually increases, so that the car starts smoothly.

2. It is convenient for the car to shift gears.

In the process of driving the car, it often involves shifting gears to adapt to the needs of different driving environments, and when changing gears, the clutch will be used. The clutch can temporarily separate the engine from the gearbox, and the engine and the gearbox are temporarily separated by using the clutch to shift gears, then the original meshing of a pair of gears is removed due to the load, and the pressure between the meshing surfaces is greatly reduced, and it is easy to separate, if there is no clutch, the pressure between the meshing tooth surfaces is very large and difficult to separate, and it is easy to damage the parts.

3. Prevent damage caused by excessive pressure of the transmission system.

When the car brakes urgently, the wheels suddenly and sharply reduce speed, and the drive train connected to the engine still maintains the original speed due to the inertia of rotation, which often produces a moment of inertia in the transmission system that is much greater than the engine torque, making the parts of the drive train easy to damage.

4. Reduce torsional vibration impact.

The output torque of the automobile engine is usually unstable, the engine is running in the stroke, and the inertia of the rotation system of the engine itself can reduce the torsional vibration, but the remaining impact force still has an adverse effect on the subsequent gearbox and transmission shaft, and the damping spring in the clutch can significantly reduce the torsional vibration impact brought by the engine and prolong the life of the transmission gear.

The manifestations of a broken fork are: the fork is bent and deformed; cracks or fractures in the fork; The fork pin is damaged, and the fork and fork shaft fall off roughly. A broken fork can cause the transmission.

It is difficult to hang the gear or cannot be put into gear, and it needs to be repaired and replaced in time, and if it is not opened, it will affect the normal driving of the car.

Generally, the damage of the fork is that the groove of the upper end of the fork is grinded, the end face of the lower fork is thinned or ground into a groove, and the fork body at the lower part of the fork is bent and twisted.

Summary. Hello friend, according to the questions you provided, here are the answers to you what are the signs if your clutch fork is damaged? The first one is that when the gear is stepped on, the gear is not easy to hang.

In the second case, there will be a sound of gear slapping when the gear is in gear, which is the problem caused by the clutch being too low. If any of these problems occur, it is a precursor to a broken clutch fork.

Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

Your good friend in the hall socks, according to the questions you provided, the grinding shout is here to answer you what are the signs if your clutch fork is damaged? The first one is that when the gear is stepped on, the gear is not easy to hang. In the second case, there will be a sound of gear slapping when the gear is in gear, which is the problem caused by the clutch being too low.

If any of these problems occur, it is a precursor to a broken clutch fork.

The manifestations of a broken fork are: the fork is bent and deformed; cracks or fractures in the fork; The fork pin is damaged, the fork and the fork shaft fall off, etc. A broken fork will cause the transmission to be difficult to gear or not in gear, and it needs to be overhauled and replaced in time, otherwise it will affect the normal driving of the car.

Generally, the damage of the fork is that the groove of the upper end of the fork is grinded, the end face of the lower fork is thinned or ground into a groove, and the fork body at the lower part of the fork is bent and twisted.

Clutch fork oiling: First open the clutch fork holster, and then oil it along the fork.

Clutch working principle: its work can be divided into three processes: working, disengaged, and engaged.

1. Work process. When the diaphragm spring is installed between the clutch cover and the pressure plate, the pressure on the pressure plate formed by the pre-compression deformation makes the main and driven parts of the clutch compressed, that is, the clutch is in the engaged state. Engine power is transmitted to the disc via a flywheel, clutch cover and pressure plate connected to the crankshaft, and then to the input shaft of the transmission via the splined sleeve of the disc to the transmission.

2. Separation process. The driver presses the clutch pedal, the pedal moves left, the push rod moves left, and the diaphragm spring separator moves left through the cylinder and the working cylinder. Affected by this, the diaphragm spring is fixed on the clutch cover with the support pin as the fulcrum, so that the big end moves to the right of the preparation hu, and at the same time, the tension and pressure plate moves right by the action of the separation plate.

Finally, there is a gap between the driven disc and the flywheel and the pressure plate, and the clutch is separated, and the clutch separation process is over.

The working characteristics of the clutch in the separation process are: the power and movement of the engine after separation cannot be transmitted to the driven disc. The active part remained in sync with the engine speed, while the driven part was rapidly reduced.

3. Joining process. The driver releases the clutch pedal, and the pedal returns to its original position under the action of the return spring, and at the same time drives the push rod and release bearing to return. That is, the movement of the manipulating mechanism in the joining process is the reverse process of the separation process.

When there is a reserved roller hall gap between the release bearing and the diaphragm spring separation plate and the diaphragm spring compresses the pressure plate on the driven disc again, the engagement process is over, and the clutch resumes the function of transmitting power. (Photo by Zeng Caihong) @2019

Clutch fork oiling method: open the clutch fork holster and oil it along the fork.

The fork is a part on the automobile gearbox, is connected with the gear handle, is located at the lower end of the handle, toggles the intermediate gear wheel, makes the input and output speed ratio change. The fork is mainly used for clutch shifting.

The clutch is located in the flywheel housing between the engine and the gearbox, and the clutch assembly is fixed to the rear plane of the flywheel with screws, and the output shaft of the clutch is the input shaft of the gearbox. While the car is moving, the driver can press or release the clutch pedal as needed to temporarily separate and gradually engage the engine from the gearbox to cut off or transmit the power input from the engine to the transmission.

There are three essentials of clutch operation: one fast, two slow, and three linkage. When raising the clutch pedal, it is necessary to follow the operating principle of "one fast, two slow, and three linkage". When starting, press the clutch pedal to move neatly, one foot to the end, so that the clutch is completely disengaged.

The so-called "one fast, two slow, three linkage" is the process of clutch pedal lifting is divided into three stages, at the beginning of the fast lift, when you feel the pressure plate of the light sensitive condenser gradually combined to semi-linkage, the speed of pedal lifting begins to slow down, in the process of semi-linkage to full integration, the clutch pedal is slowly lifted. At the same time when the clutch pedal is lifted and cleared, the accelerator pedal should be gradually pressed down according to the size of the engine power, so that the car can start smoothly. The throttle should be operated smoothly and properly, and the throttle should only be increased when the clutch is fully engaged.

Photo by Gu Fan) @2019

There are two common methods of forklift clutch disengagement:

1.Press the clutch pedal: The forklift is equipped with a pedal clutch and operates in a similar way to a conventional car. Press the footpegs all the way down to sever the connection between the engine and drivetrain so that the forks are no longer running.

2.Joystick: The clutch control system on some forklifts uses a handle instead of the clutch pedal.

When you pull down or push the Mega Local Lever, the clutch can be disengaged and engaged. In addition, during the lifting of the forklift, the clutch may dynamically switch connection states as the operation changes.

Regardless of the method used, be sure to familiarize yourself with the operation manual of the forklift and follow the relevant safety regulations and operating procedures before operation. Especially when operating forklifts, it is important to ensure the safety of goods and personnel, and choose the appropriate driving speed and route according to the specific conditions in the site.

Hello clutch fork is a mechanism used to push the release bearing.

The clutch pedal transmits power to the fork through the drivetrain, which pushes the release bearing to compress the clutch pressure plate to achieve power transmission between the engine and the transmission.