70results about How to "Guarantee work reliability" patented technology

An electronic needle selecting mechanism of a passive multi-arm device belongs to the technical field of textile machine and comprises a signal supply device and an execution device that consists of a first transverse needle and a second transverse needle; the signal supply device comprises a bracket, a group of electromagnetic valves and a group of transverse needle actuating devices; the amount of the group of the electromagnetic valves is equal to the total amount of the first transverse needles and the second transverse needles; all electromagnetic valves are arranged in the length direction of the bracket and used for actuating the transverse needle actuating devices; the amount of the group of the transverse needle actuating devices is equal to the total amount of the first transverse needles and the second transverse needles; and all transverse needle actuating devices are arranged on the bracket, connected with the electromagnetic valves and matched with the first transverse needles and the second transverse needles, thus actuating the first transverse needles and the second transverse needles. The electronic needle selecting mechanism prolongs the service life of the signal supply device, can ensure working reliability, stability and adaptability of the signal supply device, is beneficial to reducing usage cost, and simplifies the whole structure.

The invention discloses a device for carrying out oil and gas separation and ventilation on an engine crankcase. A sandwich layer type steam cylinder cover is formed by an outer case and an inner case, a pressure valve seat, a support framework, a valve body of a pressure valve, a pressure spring, a pressure valve cover and an air outlet pipe form an oil and gas separation ventilator, the whole body of the oil and gas separation ventilator is connected with the crankcase, the pressure valve seat and the valve seat of the pressure valve form an inner cavity, the end wall of the inner cavity is provided with an air outlet pipe connected with the air inlet pipe of the engine, the valve body of the pressure valve is fixed on the pressure valve seat, the center of the valve body of the pressure valve is provided with the pressure spring, the support framework is arranged on the valve body of the pressure valve, the pressure valve cover is arranged on the upper end surface of the support framework and is fixed to the pressure valve seat in a sealed way, the upper end of the crankcase is provided with an oil refill opening, and the bottom surface of the pressure valve seat is provided with two small holes communicated with the inner case of the crankcase. The invention recovers and reuses combustible mixed gas and waste gas entering the crankcase, is favorable for improving the economical efficiency of the engine, can reduce the discharge pollution of the engine, and can ensure the stability of the engine oil lubrication of the engine under various work conditions.

The invention discloses an on-chip inductor based on a graphene/metal composite wire and a preparation method, and belongs to the technical field of microelectronic devices. The on-chip inductor includes a substrate, an inductance coil formed by a graphene/metal composite wire is arranged on the substrate, and the graphene/metal composite wire includes a metal wire and a graphene film that wraps an outer surface of the metal wire. The preparation method includes the steps of: (1) depositing a metal film on a substrate, an insulating substrate on which graphene is transferred or a semiconductor substrate where silicon dioxide grows, and etching the metal film into a metal inductance coil; and (2) covering the metal inductance coil with a graphene film, thereby obtaining the on-chip inductor based on the graphene/metal composite wire. The on-chip inductor based on the graphene/metal composite wire and the preparation method have the advantages that the quality factor, thermal conductivity, oxidation resistance, current-carrying capability and high-frequency working performance of the on-chip inductor are improved, single-layer graphene wraps the surface of the metal wire, and has little influence on the size of the on-chip inductor, the implementation process is simple, and very strong practicability is achieved.

The invention relates to a Zigbee-and-mobile-technology-based building renewable energy heating system remote monitoring system and a Zigbee-and-mobile-technology-based building renewable energy heating system remote monitoring method, and also relates to a building renewable energy heating system remote monitoring system and a building renewable energy heating system remote monitoring method based on a Zigbee technology, a bus technology and a mobile technology. The Zigbee-and-mobile-technology-based building renewable energy heating system remote monitoring system comprises a building renewable energy heating system, a user control panel of the building renewable energy heating system, and a computer running monitoring platform, and further comprises a wireless data transmission system and a heating system running monitoring control panel, wherein the wireless data transmission system adopts the mobile technology and the Zigbee technology with or without a bus. Due to the adoption of a mobile technology communication way of one-way or two-way data transmission, the running error information of the building renewable energy heating system can be conveniently monitored, and the communication reliability of the remote monitoring system and the wireless data transmission system thereof is improved.

The invention discloses a method for machining a bottle-shaped shaft of a large pumped storage generator motor, and belongs to the technical field of motor shaft machining. The method is characterizedby comprising the following steps of a, boring a matching hole of the center of a large end and a transition connecting plate; b, turning an outer circle and a welding groove of the transition connecting plate, and assembling and welding the transition connecting plate into a shaft center hole in the large end of the bottle-shaped shaft; c, mounting a process dummy shaft at the large end of the bottle-shaped shaft; d, turning the process dummy shaft; e, on a working platform of a numerical control boring machine, erecting and installing the process dummy shaft to be parallel to the numericalcontrol boring machine by using angle iron, pressing a workpiece, checking by using a height gauge according to a line, pressing a gauge on the lower side surface of the machined groove by using a dial gauge, moving the machine tool away along an X axis, checking by using the height gauge according to the line, and machining a magnet yoke key groove to obtain a bottle-shaped shaft finished product. The chuck precision of a horizontal lathe does not affect the rotation center of the bottle-shaped shaft, the machining difficulty is reduced, the machining stability is guaranteed, the machining precision is improved, and machining operation is more convenient.

The invention discloses a temperature-measurement cable protection device for test and control for grain situation. The device is characterized by comprising a shell, wherein an opening end is formedin the shell and is used for sleeving the end part of an outer sheath of a temperature-measurement cable with the shell; a cable storage space for containing the core wire lead end of the temperature-measurement cable is formed between the shell and the end part of the outer sheath; a wire outlet is formed in the shell, is communicated with the wire storage space and can be penetrated by the corewire lead end; and a seal part is arranged at the wire outlet. The temperature-measurement cable protection device can be used for effectively preventing dust impurities from entering the gap betweena core wire and a core wire sleeve, has a good dust-proof effect, ensures the core wire to enter and exit the core wire sleeve smoothly, so that maintenance and replacement can be performed for a corewire and a temperature sensor conveniently, the core wire lead end of a temperature-measurement cable is prevented from being broken by the impact of grain storage in-out operation, the working reliability of a grain situation test and control system can be guaranteed.

The invention discloses a task equipment connecting mechanism. The mechanism comprises an airborne end installed on an aircraft and an equipment end installed on task equipment, wherein the airborne end is provided with an electric connection port, the equipment end is provided with an electric connection head matched with the electric connection port, the airborne end is provided with a sliding groove for the equipment end to be inserted in, and an anti-falling locking mechanism for preventing the equipment end from exiting from the sliding groove is further arranged between the airborne endand the equipment end. The task equipment connecting mechanism is advantaged in that the task equipment can be quickly mounted and dismounted, different task devices can be conveniently replaced to achieve different functions, the application range is enlarged, mechanical connection and electrical connection are integrally achieved, operation is easy and rapid, connection reliability is high, safety is high, the automatic locking function is achieved, and the situation that the task devices are accidentally disengaged and fall off can be effectively avoided.

The invention discloses a well testing blocking fork and belongs to the technical field of well testing construction tools. The well testing blocking fork comprises a body. The well testing blocking fork is characterized by further comprising a rotating shaft, a first moving block and a second moving block. The body comprises an installing section and a holding section. A first fixing base and a second fixing base are fixed to the installing section. The rotating shaft sequentially comprises a right-hand thread section, a first polish shaft section, a knurling section, a second polish shaft section and a left-hand thread section. The knurling section is located between the first polish shaft section and the second polish shaft section. The rotating shaft penetrates through the first fixingbase and the second fixing base. The right-hand thread section and the first moving block are connected through a thread. The left-hand thread section and the second moving block are connected through a thread. The first moving block is in sliding connection with the installing section through a first sliding block. The second moving block is in sliding connection with the installing section through a second sliding block. The well testing blocking fork is simple in structure, reasonable in design, high in flexibility and capable of greatly reducing labor intensity, and well testing instruments of various sizes can be clamped to a blowout preventing pipe opening in series conveniently and flexibly.

The invention provides a motor. The motor comprises a casing, a rear end cover, a front end cover, a stator and at least one group of oil injection oil pipes, wherein the rear end cover and the frontend cover are respectively arranged on the rear end surface and the front end surface of the casing, the rear end cover is provided with an oil inlet pipe and a rear end cover oil way communicated with the oil inlet pipe, and the front end cover is provided with a front end cover oil way; the rear end cover oil way is communicated with the front end cover oil way through a connecting oil pipe; thestator is arranged in the shell; one of the two oil injection pipes in at least one set of oil injection pipes is installed on the rear end cover and communicated with the rear end cover through an oil way, the other oil injection pipe is installed on the front end cover and communicated with the front end cover through an oil way, and each oil injection pipe is provided with an oil injection hole penetrating through the peripheral wall of the oil injection pipe; the oil injection holes are at least used for cooling a stator core and a winding end part of the stator. According to the motor, through the stator cooling oil way and the rotor cooling oil way, cooling of the motor can be effectively achieved, the cooling effect of the motor is good, and working reliability is high.

The invention belongs to the technical field of valves, and particularly relates to a pipe clamp valve. The pipe clamp valve comprises a valve body with a built-in flow pipe, and a medium flows in from an inlet of the flow pipe and is discharged from an outlet of the flow pipe; the valve body is further provided with a switch part used for controlling the flow pipe to be opened and closed; the pipe clamp valve is characterized in that the flow pipe is a double-layer pipe body and comprises a lining pipe serving as an inner pipe body and a protection pipe serving as an outer pipe body, and thelining pipe and the protection pipe are coaxially arranged in a sleeving manner; and the valve body is further provided with a sensing assembly used for monitoring whether media exist in a sealing gapbetween the lining pipe and the protection pipe or not. According to the pipe clamp valve, not only can the function of preventing medium leakage be achieved when the lining pipe is broken, but alsothe purpose of on-line detection of the leakage condition of the lining pipe can be achieved, so that maintenance personnel can be timely reminded of troubleshooting as soon as possible, and the use safety and reliability of the pipe clamp valve can be effectively guaranteed.

The embodiment of the invention provides a preparation method of a through hole structure. The preparation method comprises the following steps: providing a substrate structure comprising a first stacking layer; etching the first stacking layer to form a first through hole; forming an epitaxial growth layer at the bottom of the first through hole; forming an etching barrier layer in the first through hole, wherein the etching barrier layer at least covers the surface of the epitaxial growth layer; forming a filling structure in the first through hole; forming a second stacking layer on the first stacking layer; etching the second stacking layer to form a second through hole communicated with the first through hole; etching to remove the filling structure in the first through hole; whereinthe etching selection ratio between the material of the etching barrier layer and any one of the following materials meets the etching barrier requirements: the second stacking layer, the filling structure and the oxide layer of the filling structure. In addition, the embodiment of the invention further provides a preparation method of the three-dimensional memory, and the preparation method comprises the steps in the preparation method of the through hole structure.

The invention discloses a flying rod sheet fixing seat, a flying rod sheet fixing structure and a cavity filter. The flying rod sheet fixing seat comprises a base and two side plates connected to theleft side and the right side of the base; a notch is formed in the front side of the base; a left column body and a right column body spaced from the two side plates are connected to the left side andthe right side of the notch of the base respectively; a rear column body located between the left column body and the right column body is connected to the rear side of the notch of the base; the topends of the two side plates, the left column body, the right column body and the rear column body are connected to a top plate; vertical sliding grooves which correspond to the notch and are in sliding fit with installation ribs are formed among the left column body, the right column body and the rear column body; vertical sliding faces are formed on the left column body, the right column body and the rear column body respectively; at least one set of protruding parts located at the same height are arranged on the vertical sliding faces of the left column body, the right column body and the rear column body in a protruding mode; and at least one set of protruding parts are elastically extruded outwards by the installation ribs. With the flying rod sheet fixing seat, the flying rod sheet fixing structure and the cavity filter adopted, the phenomena that a flying rod sheet fixing structure is difficult to install or even cannot be installed and shakes after being installed can be solved.

The invention provides a valve special for pneumatic conveying and relates to the technical field of special valves. The problems that the sealing performance of a piston and a valve main body cannot be improved under the action of airflow through structural improvement, the air leakage and contact with the hand of an operator cannot be avoided through structural improvement, and automatic locking of an adjusting screw cannot be achieved at the same time through the avoiding structure are solved. The valve special for pneumatic conveying comprises a valve body. The valve body is in threaded connection with a connecting pipe, and the valve body is further in threaded connection with a base. A sliding rod is welded to the top end face of a piston head, the sliding rod is of a stepped shaft structure, and the sliding rod is connected into the sliding groove in a sliding manner. The sliding rod is sleeved with an elastic piece B, and the elastic piece B is of an annular structure. The outer diameter of the elastic piece B is equal to the outer diameter of the piston head, and the elastic piece B forms an auxiliary sealing structure of the piston, so that compression of the elastic piece B can be achieved under the resistance effect of air pressure, and then auxiliary sealing is achieved.