Safety device of miniature single-machine punch equipment

The invention provides a safety device of a piece of small single machine stamping equipment, which is provided with a resistance detection mechanism, a distance detection mechanism, a conductive detection mechanism, a controller and an actuating mechanism. The resistance detection mechanism is used for judging whether an article exists between an upper die and a lower die so as to generate a first judging signal and transmit the first judging signal to the controller; the distance detection mechanism is used for judging whether the distance between the upper die and the lower die is larger than a safety distance which is set in advance so as to generate a second judging signal and output the second judging signal to the controller; the conductive detection mechanism is used for judging whether a current between the upper die and the lower die is stronger than the critical current which is arranged in advance so as to generate a third judging signal and output the third judging signal to ...

Speeder for single cylinder diesel engine

Safety device of miniature single-machine punch equipment

The invention provides a safety device of a piece of small single machine stamping equipment, which is provided with a resistance detection mechanism, a distance detection mechanism, a conductive detection mechanism, a controller and an actuating mechanism. The resistance detection mechanism is used for judging whether an article exists between an upper die and a lower die so as to generate a first judging signal and transmit the first judging signal to the controller; the distance detection mechanism is used for judging whether the distance between the upper die and the lower die is larger than a safety distance which is set in advance so as to generate a second judging signal and output the second judging signal to the controller; the conductive detection mechanism is used for judging whether a current between the upper die and the lower die is stronger than the critical current which is arranged in advance so as to generate a third judging signal and output the third judging signalto ...

Wireless electric energy transmitting device

The invention discloses a wireless electric energy transmitting device. The wireless electric energy transmitting device comprises a single-chip microcomputer control circuit, an IR2111 half-bridge driving module connected with the output end of the single-chip microcomputer control circuit, a transmitting coil connected with the output end of the IR2111 half-bridge driving module, a current sampling module used for conducting sampling on the transmitting coil and feeding sampling information back to the single-chip microcomputer control circuit, and an electric energy receiving circuit used in cooperation with the transmitting coil. According to the wireless electric energy transmitting device, the system circuits are simple, the device is easy to obtain, cost is low, operation is stable and reliable, and practical value is extremely high.

Asymmetric catalytic hydrogenation synthesis method of briracetam intermediate

The invention relates to an asymmetric catalytic hydrogenation synthesis method of a briracetam intermediate, which comprises the following steps: in a hydrogen atmosphere and a solvent, a compound shown in a formula I is subjected to asymmetric hydrogenation reduction in the presence of a catalyst formed by a planar chiral metallocene ligand and ruthenium salt and alkali to form a compound shown in a formula II, and a reaction formula is shown in the specification. The asymmetric catalytic hydrogenation synthesis method disclosed by the invention has the advantages of low catalyst cost and high conversion rate of raw materials, and the DR value of the obtained final product can be greater than 99: 1, so that the asymmetric catalytic hydrogenation synthesis method is suitable for industrial production.

Speeder for single cylinder diesel engine

The invention relates to a speed regulator for a single-cylinder diesel engine, which comprises a speed-regulating lever, a secondary speed-regulating lever, a speed-regulating lever shaft, an elastic mechanism, a pin shaft, an adjusting arm, a speed-regulating spring and an oil limiter. Wherein, the adjusting arm is connected with the speed-regulating spring, which is further connected with a throttle operating mechanism; the adjusting arm, the speed-regulating lever and the secondary speed-regulating lever are looped on the speed-regulating lever shaft coaxially; between the speed-regulating lever and the speed-regulating lever shaft, a free rotating coupling is formed; the secondary speed-regulating lever and the speed-regulating lever shaft are fixedly connected through the pin shaft; the elastic mechanism is located between the speed-regulating lever and the secondary speed-regulating lever; on the secondary speed-regulating lever, a touch face is arranged; between the touch face and ...

Storage battery performance tester and implementation method of storage battery performance tester

The invention discloses a storage battery performance tester. The storage battery performance tester solves the problems that in the prior art, a storage battery performance testing device is excessively complex in system, high in cost and poor in accuracy. The storage battery performance tester mainly comprises a single-chip microcomputer, a storage battery deep control and discharge loop, a metering loop, a voltage collecting loop, a liquid-crystal display loop and a control button, wherein the storage battery deep control and discharge loop, the metering loop, the voltage collecting loop, the liquid-crystal display loop and the control button are each connected with the single-chip microcomputer. The invention further provides a corresponding implementation method. Through combination of software and hardware, the total volume of a storage battery and the current voltage and the current volume of the storage battery in the using process can be accurately and stably measured, the cost ...

Light-control curtain system and realizing method thereof

The invention discloses a light-control curtain system which solves the problems that in the prior art, a light-control curtain system is complex, high in cost and low in automation degree. The light-control curtain system comprises a curtain frame, a curtain installed on the curtain frame, and a speed reducing motor driving the curtain to be opened or closed. The light-control curtain system is characterized by further comprising a single-chip microprocessor control unit, a light signal collecting unit used for collecting indoor light intensity, a motor drive unit driving the speed reducing motor to work according to the indoor light intensity, an LED time display unit used for displaying the curtain opening and closing time, a speed adjusting unit used for adjusting the rotating speed of the speed reducing motor, and a timing control unit used for controlling the working state of the whole system. The light signal collecting unit, the motor drive unit, the LED time display unit, the speed ...