Backstop Manufacturer

The working principle of a backstop is mainly based on its internal structure and motion characteristics. Different types of backstops have different working principles, but the core purpose is to prevent reverse motion while transmitting torque in one direction. The following are several common working principles of backstops compiled by backstop manufacturer:
1. Roller type

Roller type backstop utilizes the clamping effect of rollers on inclined surfaces to achieve one-way transmission. When the inner ring of the backstop rotates forward, the roller at the large end of the wedge-shaped space does not work and is allowed to rotate freely; When the inner ring rotates in the opposite direction, the rollers move towards the small end of the wedge-shaped space under the action of the spring force, clamping the inner and outer rings and preventing reverse movement.

2. Claw type
The pawl type backstop achieves one-way transmission through the design of the pawl. The pawl can rotate freely in one direction, but will be locked in the other direction. When the input end rotates in the forward direction, the pawl is in contact with the ratchet tooth surface but not locked, allowing free rotation; When the input end rotates in the opposite direction, the pawl will get stuck in the ratchet teeth groove, thereby preventing reverse movement.
3. Sliding block type
The slider type backstop adopts a combination of slider and cam to achieve one-way transmission. When the input terminal rotates forward, the slider moves along a certain trajectory under the push of the cam, but does not produce a locking effect; When the input end rotates in the opposite direction, the slider is locked into the cam groove under the action of the spring or gravity, thereby preventing reverse movement.
4. Liquid damping type
Liquid damping backstop achieves unidirectional transmission through fluid compression and frictional damping. When the input end rotates forward, the fluid is compressed in the cavity and generates a certain damping force, but it is not enough to prevent rotation; When the input end rotates in the opposite direction, the fluid damping force increases, which is sufficient to prevent reverse motion. This method is usually used in situations that require buffering and vibration reduction.
5. Belt style
The belt type backstop is mainly composed of a limiter, a brake band, and a stopper. When the electric drum is operating normally, the brake band is stored in the limiter. When the drum reverses, the brake belt is brought between the nylon conveyor belt and the rubber coated drum, and the reverse rotation of the transmission drum and the strong wear-resistant rubber belt is stopped by frictional force. This method has a simple structure and is suitable for low-power belt conveyors.
6. Alien block
The irregular block backstop is a special form of irregular block clutch used for backstop. When the rotational speed of the inner ring is greater than that of the outer ring, the irregular block hardly generates frictional force; When the speed of the outer ring is greater than that of the inner ring or when the inner ring reverses, the irregular block gradually squeezes the inner and outer rings under the action of friction, causing the speed of the inner and outer rings to approach or stop reversing. This method is commonly used in situations where precise control of speed and steering is required.
In summary, there are various working principles of backstops, but they are all based on their internal structure and motion characteristics to achieve one-way transmission and prevent reverse motion. In practical applications, the appropriate type of backstop should be selected based on specific needs and working environment.