Apron feeder chain transmission is a transmission mode that transmits the motion and power of the active sprocket with special tooth shape to the driven sprocket with special tooth shape through the chain, which can form a circulating transmission loop. It is a common transmission mechanism in the mechanical field. In the actual application process, the chain drive may be affected by external factors and reverse, which occurs in some devices such as apron feeder, which will cause irreversible damage to the chain itself and the transportation of materials, so a device to prevent chain reversal is needed to solve the above problems. Apron feeder's chain brake device solves the problem of chain reversal in prior art. The scheme is as follows: apron feeder chain brake device is used to prevent chain reversal, including a chain stop plate, swing is arranged on the base, the chain stop plate has a chain stop part and a counterweight part, the chain stop part has a first working face, the transport direction of the chain is defined as the first direction, after the chain rotates along the first direction, The first working face and the connecting shaft of the chain are connected or separated from the connecting shaft, the stopping chain part also has a second working face, the counterweight part has a third working face, after the chain rotates in the opposite direction of the first direction, the second working face and the connecting shaft of the chain are connected, the third working face and the base are connected. As a further technical solution, the base has a first mounting hole and a second mounting hole, the first mounting hole is connected with the second mounting hole and the axial direction is perpendicular to each other, the stop chain plate has a clamping part, the clamping part is rotated in the first mounting hole, and the end of the clamping part is concave in the center, and also includes the clamping part, inserted in the second mounting hole, the second mounting hole. The end part of the clamping part is convex in the center and forms a gap fit with the end part of the clamping part. As a further technical solution, the clamping piece has a first chute and a second chute, the first chute is opened along the axial direction of the second mounting hole, the second chute is opened along the radial direction of the second mounting hole, and the first chute is connected with the second chute, and also includes a limit piece, arranged on the inner wall of the second mounting hole, after the clamping piece is rotated, the second chute is connected with the second chute. The limit extends into or out of the second chute. As a further technical solution, the base has a first mounting hole and a second mounting hole, the axial direction of the first mounting hole is parallel to the axial direction of the second mounting hole, the stopper chain plate has a third mounting hole, the first mounting hole is communicated with the second mounting hole through the third mounting hole, and further comprises, Through the first mounting hole, the third mounting hole and the second mounting hole are inserted on the base.
The base and the chain stop plate are arranged along the chain rotation direction. The working principle and beneficial effect are as follows: a chain brake device of apron feeder is designed to prevent chain reversal. One design method of apron feeder's chain brake device is to use self-balancing weight to achieve the resetting of the chain baffle. The specific structure is to install a base on the rack with chain transmission. The base is in the shape of "U". The chain baffle is installed in the space in the middle of the base through the pin shaft. Create a reserved space between the chain baffle and the base. The top end of the chain stop plate is the clamp end, the bottom end is the counterweight end, the clamp end is the chain stop part, and the counterweight end is the counterweight part. Among them, the chain stop part is at the connecting shaft of the chain, the upper surface of the chain stop part is the first working face, and the lower surface is the second working face. When the chain is driven forward, the chain connection shaft is connected to the first working face, and the chain stop part is pushed downward for some distance. Due to the counterweight part, the chain stop will automatically reset before the next chain connection shaft arrives, and when the chain is reversed, the chain connection shaft will touch the second working face, at this time the chain stop will be driven by the chain connection shaft to move in reverse, and the counterweight will be close to the reserved space, and finally its third working face will touch the surface of the base, so that the whole chain stop plate will be stuck on the base. Realize the braking of the chain. To sum up, the apron feeder chain brake device adopts the self-balancing method to realize the automatic reset of the chain stop plate, which simply and effectively prevents the chain reversal. Moreover, the apron feeder chain brake device can be installed multiple times according to the actual situation, which occupies small space and is easy to install.