6results about How to "Realize the commutation function" patented technology

The invention provides a gastroscope traction device. The gastroscope traction device comprises a mounting seat, a driving assembly, a cleaning assembly and a traction assembly, wherein the driving assembly is detachably arranged on the mounting seat; the cleaning assembly is rotatably arranged on the mounting seat and is connected with the driving assembly; the traction assembly is fixedly arranged on the mounting seat and is connected with the driving assembly; the cleaning assembly and the traction assembly can clean, clamp and pull a gastroscope pipeline under the action of the driving assembly. According to the gastroscope traction device, an endoscope pipeline can be stably and evenly recycled after gastroscopy is completed, meanwhile, the outer wall of the endoscope pipeline is cleaned and disinfected, the risk of cross contamination is reduced, and the service life of an instrument is prolonged.

Provided is a manual reversing device for a hydraulic rerailer, comprising a rerailing beam, the rerailing beam being provided with a transverse oil cylinder; the piston rod of the transverse oil cylinder being connected to the reversing device; the reversing device comprising a reversing seat; a reversing shaft that can rotate and rise and fall is installed in the vertical reversing shaft hole of the reversing seat body; a limit pin is installed on the reversing shaft; the limit pin is used to limit the rotation of the reversing shaft when it is locked with the reversing seat; a slot is formed on one side of the left and right symmetrical sides of the reversing shaft extending from the bottom of the reversing seat, and a retreat slope is formed on the other side. The present invention enables the hydraulic rerailer to work in reverse through manual reversing, thereby realizing the bidirectional working function of the hydraulic rerailer; manual control is simple and easy, low in cost, compact in structure, and can withstand large shearing forces; easy to operate, economical and practical.

The present invention discloses a reversing mechanism, comprising a first part and a second part, wherein valve cores are arranged inside the first part and the second part, a fluid inlet hole is arranged on the central axis of the valve core, and a first channel and a second channel are arranged inside the first part, and the fluid inlet hole is connected with the first channel and the second channel by movement of the valve core, thereby realizing the reversing function of the device, and since a guide column is arranged inside the second part and cooperates with a guide groove on the valve core, the fluid inlet hole can be switched back and forth between the two channels, and positioning can be achieved after the switching, thereby ensuring that the fluid inlet hole and the switched channel always remain unobstructed, so the device only needs to pull the valve core to realize the fluid path conversion, which greatly simplifies the existing fluid path conversion method; therefore, the present invention is not only simple in structure and easy to manufacture, but also easy to use and reliable in performance, thereby realizing promotion and application.

The invention provides an antenna pitching transmission device based on double worm gear reducers, which comprises an antenna reflector, a high-frequency box, a left support arm, a right support arm, an azimuth turntable and a worm gear reduction transmission assembly arranged on the azimuth turntable, and is characterized in that the worm gear reduction transmission assembly comprises two symmetrically arranged double worm type worm gear reducers; the two sides of the high-frequency box are fixedly connected with the ends of the worm gear outer rings of the two double-worm type worm gear reducers respectively, and the high-frequency box is driven by the double-worm type worm gear reducers to rotate around the pitch axis in a pitching mode. The worm and gear speed reduction transmission assembly is provided with four worm input ends, and the speed reduction and reversing functions are achieved through the four reversing planetary speed reducers. The four reversing planetary reducers are connected through the coupler, input synchronism of the input end of the worm is ensured, when the device is used for driving the antenna to do pitching motion, pitching balance weights do not need to be additionally added, and the device is suitable for driving the antenna with a great unbalanced load to do pitching motion.

The invention relates to the technical field of motors, and provides a motor current sampling circuit, sampling method and sampling device.The sampling circuit comprises a sampling resistor, a differential operational amplifier circuit and an MOS tube circuit, the sampling resistor is provided with a sampling resistor first end and a sampling resistor second end, the sampling resistor first end is used for being connected with a motor first end, and the sampling resistor second end is used for being connected with a motor second end; the inverting input end of the operational amplifier is connected with the first end of the sampling resistor, the non-inverting input end of the operational amplifier is connected with the second end of the sampling resistor, the differential operational amplifier circuit is used for collecting and amplifying sampling voltage, and the MOS tube circuit comprises a first MOS tube circuit, a second MOS tube circuit, a third MOS tube circuit and a fourth MOS tube circuit. The first MOS tube circuit and the second MOS tube circuit are connected with the second end of the sampling resistor, and the third MOS tube circuit and the fourth MOS tube circuit are used for being connected with the second end of the motor. According to the invention, the aim of acquiring the phase current of the motor by using a common operational amplifier and a conventional resistor with the precision of one percent is fulfilled, and the hardware cost is reduced.

The present invention discloses a low-altitude sightseeing vehicle with a single-rail suspension form for scenic areas, which includes a first cockpit, a second cockpit, a locomotive power cabin, a passenger cabin, a current collector, a first electric drive unit, a second electric drive unit, a first brake, a second brake, an overspeed trigger, a first suspension trolley, a second suspension trolley and an I-beam track. The first cockpit is connected to the locomotive power cabin, the locomotive power cabin is connected to the I-beam track through the first suspension trolley, the first brake is arranged on the first suspension trolley, the passenger cabin is connected to the I-beam track through the second suspension trolley, the locomotive power cabin is connected to one end of the passenger cabin through the first electric drive unit, the first electric drive unit is connected to the I-beam track, the overspeed trigger is arranged on the I-beam track and connected to the passenger cabin, the second cockpit is connected to the I-beam track through the second suspension trolley, the second cockpit is connected to the other end of the passenger cabin through the second electric drive unit, and the second brake is arranged on the second suspension trolley. The present invention uses the top rigid I-beam track for bearing and guiding, eliminating the risk of falling, and having higher safety than the cable-type track, and is suitable for the sightseeing field.