NJZ/NJ type low-speed contact backstop is a new type of backstop device for belt conveyor, which is directly installed on the shaft extension of the transmission drum or the low-speed shaft shaft extension of the reducer, which has a strong anti-reversal ability. When the large belt conveyor that is fully loaded with material suddenly stops running for various reasons, the backstop can effectively prevent the retrograde sliding accident that occurs due to the gravity of the material, and when the backstop state, the whole drive device is still in the unloading state, which not only does not affect the maintenance and replacement of the drive components such as the motor and the reducer, but effectively prevents the retrograde accident that occurs due to the damage of the drive system, and is more safe and reliable. Therefore, it is a very ideal anti-reversal safety protection device for large belt conveyors.
The anti-reversal device of the backstop adopts an array of wedge-shaped blocks to be evenly arranged in the gap formed by the inner and outer rings, and the wedge-shaped blocks are evenly distributed, and the contact surface is large when backstopping, and the backstop is safer. The internal use of thin oil lubrication, reduce the frequency of oil changes and the number of maintenance, the backstop automatically fully lubricates the inner cavity and the working face, improves the friction coefficient, prolongs the service life of the backstop, and significantly improves the comprehensive mechanical properties.
The special backstop of permanent magnet roller is mainly suitable for the backstop of the permanent magnet drum, the inner ring of the backstop is installed on the stator shaft of the permanent magnet drum, fixed and immovable, the outer ring of the backstop rotates synchronously with the permanent magnet drum, when the permanent magnet is reversed, the permanent magnet roller drives the outer ring of the backstop to move in reverse, and the backstop is wedged with the inner ring through the wedge to prevent the reverse movement of the permanent magnet drum. The special backstop for permanent magnet rolling is installed on the side of the drum, with compact structure, no separate backstop arm, simple installation, and a wide range of application prospects.
The inside is lubricated with thin oil, which is more sufficiently lubricated;
The seals are imported brands, with multiple sealing structures, and the sealing effect is good;
The design of the arm and the main body is separated, and when the system needs to be reversed, it can be achieved by simply removing the arm of the arm;
The unique torsion spring design is used to make each backstop module evenly stressed;
The core components are manufactured by special technology to improve the wear resistance of the parts;
Certified for coal safety, it can be used in explosion hazard environments such as coal mines.
