4results about How to "Implement self-test" patented technology

The utility model provides a fault self-checking elevator band-type brake safety device. The fault self-checking elevator band-type brake safety device comprises a base, wherein a detection assembly is arranged at the top of the base; the detection assembly comprises a fixing block arranged on the top of the base, and two brake arms are rotatably arranged on the front face of the fixing block. According to the fault self-inspection elevator band-type brake safety device, when a brake shoe is abraded much to enable the return stroke line spacing of a compression spring to be increased, the right end of a second connecting rod can move more rightwards compared with normal conditions, then a sliding block slides to the position below a power connection groove, and under the action of an ejection spring, the sliding block can move more rightwards to the position below the power connection groove. According to the brake shoe self-checking device, the structure is simple and practical, self-checking of the brake shoe is achieved within the interval time of maintenance of a maintenance worker, and the problem that potential safety hazards exist in a brake device is solved.

The utility model discloses a radio frequency self -checking device for FDD microwave communication system, including coupling circuit, frequency conversion circuit, frequency source circuit and controller, the coupling circuit is equipped with a two -way radio frequency port for with the two -way connection of external duplexer's tuning terminal, the through output port of coupling circuit is connected with the radio frequency input port of frequency conversion circuit, the intermediate frequency output port of frequency conversion circuit is connected with the coupling input port of coupling circuit, the local oscillator port of frequency conversion circuit is connected with the output port of frequency source circuit, it belongs to communication field, through this self -checking device, the signal of transmitting channel in system is frequency conversion to the signal of receiving channel, and sends back receiving channel and carries out the signal processing effect.

The invention discloses an intelligent suspension conveying system for workpiece Dacromet spraying, and relates to the technical field of suspension conveying systems.The intelligent suspension conveying system comprises a guide rail, a suspension chain is laid in the guide rail, a driving structure is installed on the guide rail, and the intelligent suspension conveying system further comprises a positive pressure dustproof mechanism which comprises an air pump installed on the guide rail; a rubber pipe is fixedly laid in the guide rail through a clamping piece, air outlets are evenly formed in the rubber pipe, and only the bottom of the guide rail is provided with an opening. Air is continuously conveyed into the guide rail through the air pump and the rubber pipe, so that a micro-positive pressure environment is formed in the guide rail, and atomized coating drifting upwards is prevented from entering the guide rail; the problem that after a suspension conveying system is used for a long time, paint is accumulated on a suspension chain, and the dead weight is increased is solved, in addition, when the suspension chain hunches up and vibrates in the equipment self-inspection process, the rubber pipe can be used for buffering, collision between the suspension chain and the inner wall of the guide rail is reduced, and the effect of protecting the suspension chain is achieved.