Dynamic test stand of backstop

Abstract

The invention relates to a dynamic test stand of a contact type backstop. The dynamic test stand comprises a motor, a torque-limiting coupler, a reducer, a safety coupling, a clutch, a flange coupling, a backstop, an elastic coupling, a speed regulation motor and the like; and two continuous processes of idling and reverse stop of the backstop are realized through disconnecting and connecting the clutch. The dynamic test stand not only can detect the idling test of the backstop, and can detect whether a torsional spring is reset in time or not, and whether a backstop wedge can exert functions and bear uniform stress and the like; and the dynamic test stand also can better detect the comprehensive performances of the backstop, so that the reverse stop in the actual running process of the backstop is more reliable.

Description

technical field [0001] The invention relates to a testing technology applied to a contact backstop, in particular to a dynamic detection test bench for a contact backstop. Background technique [0002] The backstop is a mechanical device to prevent the inversion or smoothing of the inclined belt conveyor when it is parked with load. The backstop is composed of several special-shaped wedges distributed in the raceway formed by the inner and outer rings according to certain rules. The raceway between the inner and outer rings is supported by bearing positioning to make it run smoothly. The inner and outer rings are connected together by the side plates on both sides through bolts to form the main body of the backstop. The main body of the backstop is connected with the anti-rotation force arm, and the force arm is limited by the fixed stop iron. There is a high-precision torsion spring at both ends of each wedge, which can ensure the backstop without gap and the force synchro...

AI Technical Summary

Problems solved by technology

The static backstop torque test is in a static state, all torsion springs and backstop wedges are in theoretical positions, so the force on the backstop wedges is uniform, so it is impossible to detect the synchronization of the backstop wedges

[0008] 4. When the backstop is backstopped, the backstop wedge angle of the backstop is generally 2.5°-7°. If the backstop wedge cannot be stressed synchronously, the force of the partially stressed backstop wedge will be greater than the design value , the backstop is unreliable; while in the static backstop torque test, all the backstop wedges are synchronously and uniformly stressed

[0009] 5. The backstop is affected by shock and vibration in actual work, and the torsion spring may loosen, which cannot guarantee the reset of the backstop wedge; while the test force of the static backstop is stable without vibration shock, the actual operation of the backstop Unreliable

[0010] 6. Due to the above five shortcomings of the backstop static test bench, even if the test of the backstop on the static test bench can meet the design requirements, the backstop is unreliable, which brings many safety hazards to actual use

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