Double-coding mounting bracket for directly-connected low-speed lifter and transmission shafts

Abstract

The invention discloses a double-coding mounting bracket for a directly-connected low-speed lifter and transmission shafts. The double-coding mounting bracket comprises a roller big shaft, a speed measurement encoder and a depth encoder; the mounting bracket is fixed on an end cover of a bearing by a bolt; the roller big shaft is sleeved on a hole of the mounting bracket; one end of each transmission shaft is fixed on the roller big shaft by a bolt; the speed measurement encoder is sleeved between the transmission shafts; two symmetrical connecting elastic sheets are arranged on the speed measurement encoder and are respectively installed on a connecting plate; a data line passes through a data line through hole and is connected with the speed measurement encoder; the other end of the speed measurement encoder is connected with one end of an elastic coupler; the other end of the elastic coupler is connected with the depth encoder; and the depth encoder is fixed on the mounting bracket by a bolt and is connected with the data line. The double-coding mounting bracket has the advantages that the service life of each encoder is prolonged, the volume is small, the appearance is attractive and elegant, and the reliability is high. With the adoption of the double-coding mounting bracket, the economic cost is reduced, and the good benefice benefit is obtained.

Description

technical field [0001] The invention relates to a speed measuring machine, in particular to a double-coded mounting bracket and a transmission shaft of a low-speed direct-connected hoist. Background technique [0002] Most domestic JKMD-4×4 direct-connected DC speed-regulating winches use tachogenerators as speed measurement feedback. It is characterized by low cost and simple signal processing. But it has one of its biggest weaknesses, that is, the speed measuring machine is easy to break and the speed regulation performance is poor. Shaft encoders have many advantages such as high precision, strong anti-interference ability, small size, and small required transmission torque. If you want to use the shaft encoder as the speed measurement feedback on this type of hoist, you must design a suitable encoder mounting bracket and transmission shaft. After careful design, we finally installed the speed measuring encoder and the original depth indicating encoder on the same axis...

AI Technical Summary

Problems solved by technology

The tachometer operates in such a harsh environment, and there are often failures such as internal disconnection and poor contact of carbon brushes.

[0004] 2) The feedback of the speed measuring machine is a voltage signal, which has large interference, poor linearity, and poor speed regulation performance

[0005] The constant magnetic speed measuring machine is prone to failure, which increases the maintenance workload and cost of the hoist, and brings great hidden dangers to the safe operation of the auxiliary shaft

Images