31results about How to "Change strength" patented technology

The present invention is related to a manpower driven device being able to do particular bi-directional pedaling to provide constant directional output for driving the loading wheel train, wherein its pedaling direction is selected by the rider according to his / her operating statuses of the muscles and joints, or the same directional outputs of different speed ratios is made further through the different driving directional inputs.

The invention relates to a method for controlling accuracy of a medicine supply quantity of a powder aerosol supply device, and belongs to the field of a medicine supply machine. On one hand, a vibration gear is arranged below a medicine powder outlet of a medicine powder storage container to perform integral striking-type vibration to a runner lower component by virtue of a rotating plate, so that the measuring accuracy of a medicine powder dosage supplied by a medicine storage unit in the medicine supply process at every time of the entire powder aerosol supply device can be better guaranteed; on the other hand, a counter-rotation prevention structure is used for preventing the failure in medicine supply, when in operation, the powder aerosol supply device can correctly supply the medicine after rotating for a given angle, so that the situation of failure in medicine supply can be prevented, the rotating angle of a rotating wheel is enabled to be correct at every time when in use, more convenience in operation can be realized, the situation of failure in medicine supply can be prevented, and accuracy in measuring the medicine supply dosage of the powder aerosol supply device at every time can be guaranteed. The method can be widely suitable for the design and manufacture field of the powder aerosol supply device of various specifications.

The invention discloses an electromagnetic stirrer for metamorphism treatment in front of molten steel furnace, which comprises a first casing, a sealing top cover is arranged on the top of the first casing, and the upper surface of the sealing top cover is fixed by welding. For the handle, two second housings are fixedly installed on the outer peripheral surface of the first housing, and the inner side of the second housing is provided with a clamping base; The core and the coil are clamped to keep the magnetic core and coil fixed, safe and stable; the degree of tumbling of the molten steel in the stirrer can be changed by changing the position of the magnetic core coil in the stirrer shell and by changing the size of the magnetic core and coil control, so that the molten steel can absorb the modificant very effectively, which not only reduces the amount of the modificant, but also stabilizes the metamorphic effect and overcomes the phenomenon of "deterioration and recession". Stabilization of novel modifiers for industrial production.

The invention provides a method for protecting an electronic component in a monocrystalline silicon differential pressure transmitter by resistance change. The electronic component comprises a clamp plate, a mounting block and a cover body. A connecting block is fixedly mounted in the groove on the upper surface of the clamp plate. The upper surface of the connecting block is fixedly provided witha contact point. A contact block is fixedly mounted inside the left side of the mounting block. A guide block is overlapped on the upper surface of the right side of the contact block. The right endof the guide block is fixedly provided with a fixed ball. A lead is fixedly connected on the upper surface of the guide block. A metal rod is inserted in the middle part of the mounting block. A coilis fixedly connected on the upper end of the right side of the metal rod. A thermistor is fixedly mounted on the lower end of the right side of the metal rod. The guide block and the contact block canbe conveniently and effectively separated to form an open circuit through the cooperation of the guide block, the fixed ball, the lead and the arc plate, the brightness of the display screen is reduced, the working personnel are effectively reminded that the device is placed for too long and thus the service life of the electronic component can be guaranteed.

The invention relates to an adjustable damping type vibration-attenuation and chatter-suppression device in the milling process of thin-walled workpieces and a vibration-attenuation method. According to a conventional vibration-attenuation device for thin-walled workpieces, the functions of suppressing blade chatter and attenuating vibration are majorly achieved by modifying and optimizing machining tools, work fixtures and machining cutters or positioning the cutters, arranging machining processes and the like; but the effects are unsatisfactory or limited, and economic input is often large. The adjustable damping type vibration-attenuation and chatter-suppression device in the milling process of the thin-walled workpieces comprises a vibration-attenuation and chatter-suppression unit (9) which comprises a seal chamber (8); a top plate (1) is mounted on the upper plane of the seal chamber; the outer layer of the seal chamber is a restraint layer (7) which is internally provided with a damping layer (6); a damping layer base plate (5) is mounted inside the damping layer and contains magnetorheological fluid (3) inside; six permanent magnets (2) are mounted in the magnetorheological fluid (3); and a coil (4) is wound outside each permanent magnet. The adjustable damping type vibration-attenuation and chatter-suppression device is used in the milling process of the thin-walled workpieces.

The invention discloses an automatic anti-rear-end collision solar street light in rural foggy days. There is a power device inside, an alarm space is set on the right side of the reset space, an alarm device is set in the alarm space, and a fog lamp space is set on the upper side of the alarm space, which can automatically extract air at intervals to detect air pollution. fog concentration, and change the intensity of the light accordingly, so as to ensure that the light has enough intensity to penetrate the fog. At the same time, the light can be switched to red after the vehicle passes by, and the flashing speed of the light can be changed according to the elapsed time, thereby roughly improving the driver of the car behind. The distance of the vehicle in front, when there is a car passing the street light before the vehicle in front has reached the safe distance, the device can send out an alarm to remind the driver that there is danger.

The invention discloses a method for improving the dosage measurement accuracy of a powder inhalation administration device and belongs to the field of inhalation type administration instruments. A lower flow channel component is subjected to overall knock type vibration through a rotary table by using a vibration gear; meanwhile, a second vibration part namely an inner drug cylinder capable of being synchronously and freely vibrated is also arranged in a drug powder storage container, drug powder in the drug powder storage container is compositely vibrated, and a dual vibration effect is generated by using the structures of master and slave vibration parts, so that the drug powder in the drug powder storage container can more uniformly flow into a quantitative drug tank, the dosage measurement accuracy of a single dosage of drug powder provided by the drug powder storage container of the powder inhalation administration device in each administration process can be better ensured, and the good adaptability of the powder inhalation administration device to the types of drug powder in a larger range is improved. The method for improving the dosage measurement accuracy of the powder inhalation administration device can be widely applied to the fields of designing and manufacturing of the powder inhalation administration devices of various specifications.

The invention belongs to the technical field of electrostatic spinning, and relates to a device and a method for preparing an ultra-large area suspended nanofiber web. The device mainly consists of ahigh-pressure generating device, a liquid supply device and a spinning collecting mechanism. According to the device, the strength of the electric field can be changed by controlling a jet head to move freely in a plane; when the jet head is positioned directly above the suspension of an outer ring of a metal ring, the electric field strength is maximum at this time, and multiple jets can be sprayed under the action of a high-voltage electrostatic field; and when the jet head is positioned directly above the center of the circle, the electric field strength is weakened, which is beneficial tospinning in the center of the suspended nano web. The structure is simple, and the influence of the external electric field on the spinning process is further weakened as much as possible, so that thespinning process is uniformly distributed under the action of the whole electric field, and large-area spinning can be realized and controlled.