Patents
Literature
42results about How to "High operational reliability" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
A side armrest switch used in an ergonomic flip function chair
A side armrest switch used in an ergonomic flip-function chair comprises a seat body, seat side leans are arranged on both sides of the seat body, the seat side leans are connected to the seat body through the side armrest switch, the seat side leans are adjusted for tilt angle flipping through the side armrest switch, the side armrest switch comprises a bottom box, a side box and a pulling action mechanism, the bottom box is fixedly connected to the bottom of the seat cushion, the side box is fixedly connected to the side of the seat side lean, a rotating shaft is movably connected between the bottom box and the side box, the locking and releasing of the seat side lean is achieved by setting a pulling handle to pull the pin to move horizontally, the operation is very convenient, the overall structure of the side armrest switch is simple, the action reliability is improved, the use stability and service life of the side armrest switch are effectively improved, and the result is connected and pulled by a pulling line, and no other linkage structure is needed in the middle, which greatly reduces the difficulty of assembly.
Owner:佛山市艾镁尔家具有限公司
A protection outlet circuit online monitoring device and method
A device and method for online monitoring of a protection outlet circuit, comprising an electromagnetic isolation sampling module connected to a contact end near a pressure plate tripping by means of electromagnetic isolation; monitoring the potential and polarity of the contact end near the pressure plate tripping to realize pressure plate state detection, pressure plate post-stage outlet circuit state detection and protection outlet behavior recording; using electromagnetically isolated equipment to collect the potential of the contact end near the protection outlet of the pressure plate, avoiding the risk of short circuit in the protection outlet circuit due to component failure, thereby improving the reliability of the operation of the relay protection device, and will no longer be affected by certain human factors. Abnormal conditions of the protection outlet circuit can also be discovered in time, greatly reducing the probability of protection refusal due to the abnormality of the outlet circuit, and completely eliminating the traditional monitoring blind spot of the protection outlet circuit.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO LTD NANJING POWER SUPPLY COMPANY +1
False power-on protection method and system based on grid-connected state
PendingCN119543074AHigh operational reliabilityimprove accuracyEmergency protective arrangements for automatic disconnectionControl theoryElectrical current
The invention discloses a mistaken power-on protection method and system based on a grid-connected state. The method comprises the following steps: replacing a single auxiliary contact of a grid-connected switch with a unit grid-connected state as an input condition of mistaken power-on protection; judging whether the grid-connected state is abnormal or not: if the grid-connected state is normal, taking the grid-connected state and the'or logic 'of the low-frequency and low-voltage element as a false power-on protection action criterion, and if the grid-connected state is abnormal, quitting the grid-connected state criterion, and taking the low-frequency and low-voltage element as the false power-on protection action criterion independently; comprehensively judging whether to quit false power-on protection or not according to the grid-connected state, the machine end current auxiliary criterion and the high-voltage side current auxiliary criterion; and starting a false power-on protection action logic according to the false power-on protection criterion combination. According to the invention, whether the unit is connected to the grid or not and whether the grid-connected state is abnormal can be judged, and related criteria and false power-on protection are sent and locked.
Owner:NANJING GUODIAN NANZI WEIMEIDE AUTOMATION CO LTD
Double-color injection mold
The invention discloses a double-shot injection mold which comprises a fixed mold provided with a first fixed mold core used for forming a first-shot product and a second fixed mold core used for forming a second-shot product; two same movable mold cores are arranged on the movable mold, and a plurality of pressing mechanisms used for fixing a first injection product are arranged on the outer side of a movable mold cavity located on the movable mold cores; the pressing mechanism comprises a pressing block in sliding fit with the movable mold core, and the pressing block can horizontally move in the direction away from or close to the movable mold cavity. When the fixed mold and the movable mold are closed, the pressing block on the movable mold core which is closed with the first fixed mold core can be pushed to move towards the direction close to the movable mold cavity, and the pressing block on the movable mold core which is closed with the second fixed mold core can be pushed to move towards the direction away from the movable mold cavity. The first-shot product is fixed in the movable mold cavity through the pressing mechanism when the mold is opened, so that the problem that the first-shot product is displaced due to adhesion between the first-shot product and the fixed mold is well solved.
Owner:CHENGDU AEROSPACE MOLD & PLASTIC CO LTD
Switch operating accessory, switch operating assembly and intelligent control device
ActiveCN224400240URealize intelligent controlStable touch pressureContact operating partsControl engineeringControl switch
The utility model discloses a switch operation accessory, including accessory casing, the transmission assembly and operation subassembly of setting in the accessory casing, operation subassembly sets up transmission assembly on, transmission assembly is used for with the detachable connection of control device's power output shaft, power output shaft rotates and drives transmission assembly movement, operation subassembly is driven under transmission assembly and makes linear movement, and operation subassembly can be with switch device's key contact and control switch device's opening and closing, the utility model discloses the rotary motion is converted into linear motion, realizes the intelligent control to switch device, the utility model discloses still a kind of switch operation subassembly and intelligent control device.
Owner:SHENZHEN LUMIUNITED TECH CO LTD
A vacuum chamber seal door
The utility model provides a kind of vacuum chamber sealing door, including sealing cover and lifting mechanism, the front and back of sealing cover are equipped with the opening allowing material to go in and out;Two vertical sliding rails are equipped on the inner side wall of sealing cover, door frame is slidably installed on sliding rail, door body is slidably installed in door frame, limit block is equipped in sealing cover inside;Guiding hole is equipped in the side wall of door frame, guiding pin matched with guiding hole is equipped in the side wall of door body, sealing ring is equipped on the abutting surface of door body and sealing cover.The utility model determines the height position of door body by limit block, and utilizes the constraint of guiding hole, forcibly drives door body to move horizontally when door frame continues to drop, so that it is automatically pressed in the inner side of sealing cover opening, converts lifting movement directly into sealing pressing force, without additional pressing device, simplify overall structure and improve action reliability, significantly reduce the complexity of equipment, manufacturing cost and maintenance difficulty, while ensuring that sealing performance meets the stringent requirements of vacuum chamber.
Owner:HUANGGANG JINMA KILN MASCH CO LTD
A middle-position limiting pneumatic actuator
ActiveCN224592797UReal-time adjustmentOvercome fixed and non-adjustable technical defectsClassical mechanicsControl theory
This utility model relates to the field of actuator technology, and in particular to a centrally positioned pneumatic actuator, comprising a cylinder body and a main shaft disposed inside the cylinder body. A piston is fitted on each side of the main shaft, and the piston drives the main shaft to rotate. The actuator also includes a positioning block, a first adjusting screw, and a second adjusting screw. A hexagonal post is disposed on the main shaft, passing through and connecting to the positioning block. The main shaft drives the positioning block to rotate coaxially via the hexagonal post. The first and second adjusting screws are threaded through the side wall of the cylinder body, and each end of the first and second adjusting screws inside the cylinder body has a first limiting end and a second limiting end, respectively. The first and second limiting ends are used to limit the contact with both ends of the positioning block. This utility model, with its centrally positioned limiting structure, allows for real-time adjustment of the actuator's stroke range.
Owner:ZHEJIANG HUAERSHI AUTOMATIC CONTROL INSTR VALVE
Simple roll changer
A simple roll-changing machine includes a two-station film roll transfer mechanism for horizontally transferring new and old film rolls. The front of the two-station film roll transfer mechanism is equipped with a film-joining heat-sealing device. The film-joining heat-sealing device includes a frame, with a liftable pressing mechanism at the upper front end of the frame. The rear end of the pressing mechanism is hinged to the cylinder rod of a horizontal cylinder, and the cylinder body of the horizontal cylinder is hinged to the upper rear end of the frame. Below the pressing mechanism is an operating table with horizontally arranged cutting grooves and heat-sealing grooves, arranged sequentially from front to back and left to right. An upward-facing cutter is located in the cutting groove, and the lower end of the cutter is connected to a slide of a rodless cylinder. The pressing mechanism has a heat-sealing pad corresponding to the heat-sealing groove. A liftable heat-sealing mechanism is located directly below the heat-sealing groove, and a cutter locking mechanism is located at the lower end of the cutter. This invention realizes the roll-changing and film-joining action for heavy-duty film bags, with a simple structure, small footprint, and high equipment reliability.
Owner:HARBIN BOSHI AUTOMATION CO LTD
Turnover mechanism and electrical equipment
PendingCN119403073AImprove stabilityImprove reliabilityCasings/cabinets/drawers detailsRelative motionControl theory
The invention relates to a turnover mechanism and electrical equipment, the turnover mechanism comprises a turnover assembly and a fixing assembly, and the turnover assembly is provided with a first matching part; the overturning assembly can overturn relative to the fixing assembly; a second matching part is arranged on the fixing assembly, one of the first matching part and the second matching part is an overturning sliding groove, and the other one of the first matching part and the second matching part is a limiting piece in sliding contact with the overturning sliding groove; a limiting protrusion is arranged in the overturning sliding groove and used for achieving relative sliding limiting between the limiting piece and the overturning sliding groove. According to the turnover mechanism, through sliding fit of the turnover sliding groove and the limiting piece, turnover guiding and turnover stroke limiting can be conducted on relative movement between the turnover assembly and the fixing assembly. According to the turnover mechanism, the limiting protrusions are arranged in the turnover sliding grooves, relative sliding limiting between the limiting pieces and the turnover sliding grooves can be achieved, random relative movement between the limiting pieces and the turnover sliding grooves is avoided, it is guaranteed that the turnover assembly is in a stable turnover state, and the stability and reliability of the turnover mechanism can be improved.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI
Multi-axis layered linkage blade lever for miniature circuit breaker
ActiveCN224400341Ureduce usagereduce in quantityProtective switch operating/release mechanismsControl theoryCircuit breaker
The utility model discloses a kind of multi-axis layered linkage blade lever for small circuit breaker, comprising: lever body, it is the special-shaped plate member of integrated molding;Main pivot hole, the lever body can rotate around the main pivot hole;First lateral transmission column, for cooperating with circuit breaker handle or superior linkage member;Second lateral transmission column, set in the middle pivot area;Third lateral transmission column;Wherein, the first lateral transmission column, the second lateral transmission column and the third lateral transmission column are layered arrangement along the lever body height direction, and form stepped overhanging structure in the lever body thickness direction, so that handle linkage member, blade driving member and spring energy storage member can be respectively located in different movement level.This multi-axis layered linkage blade lever for small circuit breaker integrates multiple components on a special-shaped plate lever body, with the characteristics of high part integration, good assembly precision and small movement interference.
Owner:ZHEJIANG FENGYUAN ELECTRICAL PART CO LTD
Switch operating accessory, switch operating assembly and intelligent operating device
The utility model discloses a switch operating accessory, including accessory casing and the gear and operating part that are set up in the intermeshing of accessory casing, gear is used for with the detachable connection of power output shaft of control device, power output shaft rotates and drives gear rotation, operating part moves under the impetus of gear to with switch device's key contact and control switch device's opening and closing, the utility model discloses the power of rotation is converted into linear motion, realizes the intelligent control to switch device, the utility model discloses still discloses a switch operating assembly and intelligent operation device.
Owner:SHENZHEN LUMIUNITED TECH CO LTD
Electronic expansion valve structure and vehicle
PendingCN119554428AExtended service lifeImprove use reliabilityEfficient regulation technologiesRefrigeration componentsAxial displacementElectronic expansion valve
The electronic expansion valve structure comprises a valve body assembly, the valve body assembly comprises a valve seat part, a nut assembly and a valve needle part, the valve needle part comprises a large valve needle assembly and a small valve needle assembly, the small valve needle assembly is connected with the large valve needle assembly in an axial displacement mode, and the nut assembly is connected with the small valve needle assembly in an axial displacement mode. A large pressing sleeve used for axially limiting the small valve needle assembly is arranged on the large valve needle assembly, a valve element and a rotor which are coaxially arranged are arranged in the shell, a compression spring is arranged in the valve seat component, and the valve needle component is sleeved with the compression spring. One end of the compression spring is in contact with the nut assembly, and the other end of the compression spring is in contact with the large pressing sleeve. The sealing performance of the large valve port of the electronic expansion valve and the action reliability of a switch valve can be effectively improved, and the electronic expansion valve has the advantages of being few in part and simple and reliable in assembly process.
Owner:DONGFENG FUJI THOMSON THERMOSTAT
Rotary electronic component
A rotary electronic component (80) applies a moderate elastic force to the sliding portion (50a) towards the annular electrode (32) and holds the sliding portion (50a) in place by providing a buffer member (82) between the sliding portion (50a) of the slider (50) and the rotor (40). This suppresses vibration of the sliding portion (50a) and reduces metal fatigue of the slider (50). Furthermore, by impregnating the buffer member (82) with lubricant and bringing a portion of the buffer member (82) into contact with the annular electrode (32), lubricant can be applied to the annular electrode (32). This smooths the sliding of the sliding portion (50a) and further reduces wear on the contact area. Additionally, the buffer member (82) functions by wiping the surface of the annular electrode (32), thus collecting dust and other foreign matter on the annular electrode (32) and preventing adverse effects of foreign matter on the contact area. Therefore, this rotary electronic component (80) achieves a long service life and high operational reliability.
Owner:TSUBAME MUSEN
Marine split shaft generator shaft holding device
The application discloses a split type shaft belt generator holding shaft device for a ship and relates to the technical field of ship power generation equipment. The device comprises two arc-shaped fastening parts which are fastened on a ship propeller shaft and a generator rotor to realize transmission cooperation. The fastening part comprises a first shell, a second shell and a plurality of friction blocks. The second shell is inserted into the first cavity of the first shell, and the friction blocks are arranged in the second cavity of the second shell. The two shells are respectively provided with aligned first and second through grooves for the friction blocks to pass through. One end of the first and second through grooves is respectively communicated with the outside. The friction blocks are provided with color development components which can adhere to the surface of the shaft or the rotor when abutting. The two shells are respectively provided with aligned first and second observation windows which penetrate through the corresponding shells. The application can intuitively monitor the wear and adhesion state of the friction blocks, the friction blocks are convenient to replace, the transmission is stable and reliable, and the maintenance cost is low.
Owner:ZHEJIANG ENERGY MARINE ENCIRONMENTAL TECH CO LTD
Knob assembly for cooking apparatus
The utility model relates to a knob assembly for cooking equipment. The utility model discloses a base (110) that drive shaft (71) passes through. The utility model has the knob main part (NB) that rotates with the above-mentioned drive shaft (71) as the center and moves linearly with the axial direction of the above-mentioned drive shaft (71). The knob main part (NB) has a locking button (140) with an operating part (143) exposed to the outside. At this time, the locking button (140) has a first position that is restricted from moving axially by the base (110) and a second position that can move axially. Therefore, the user can only press the locking button (140) first, then press the knob main part (NB) axially to make the cooking equipment work, so that the knob assembly can be prevented from being operated or malfunctioning by the locking button (140).
Owner:LG ELECTRONICS INC
Rotary electronic component
A rotary electronic component (80) applies a moderate elastic force to the sliding portion (50a) towards the annular electrode (32) and holds the sliding portion (50a) in place by providing a buffer member (82) between the sliding portion (50a) of the slider (50) and the rotor (40). This suppresses vibration of the sliding portion (50a) and reduces metal fatigue of the slider (50). Furthermore, by impregnating the buffer member (82) with lubricant and bringing a portion of the buffer member (82) into contact with the annular electrode (32), lubricant can be applied to the annular electrode (32). This smooths the sliding of the sliding portion (50a) and further reduces wear on the contact area. Additionally, the buffer member (82) functions by wiping the surface of the annular electrode (32), thus collecting dust and other foreign matter on the annular electrode (32) and preventing adverse effects of foreign matter on the contact area. Therefore, this rotary electronic component (80) achieves a long service life and high operational reliability.
Owner:TSUBAME MUSEN
Reclosing switch and automatic production equipment thereof
PendingCN122000217AImprove process connection efficiencyprecise alignmentContact operating partsSwitch power arrangementsRecloserWorkstation
The invention relates to the technical field of reclosing switch production equipment, in particular to a reclosing switch and automatic production equipment thereof.The reclosing switch comprises a machine tool base, a double-row synchronous conveying belt used for driving a reclosing switch body to transfer among multiple stations is arranged on the machine tool base, and multiple machining stations are arranged on the machine tool base; the machining station comprises an energy storage spring assembling station and a detection station. Through cooperation of the correcting inclined block, the first conveying belt and the second conveying belt, the posture of the energy storage spring can be automatically regulated, the orientation of a spring hanging hole is corrected, manual intervention and adjustment are not needed, and the problems that in the prior art, manual adjustment is low in efficiency and large in error are effectively solved; and meanwhile, synchronous scheduling of the energy storage spring and the reclosing switch body is realized in cooperation with the double-row synchronous conveying belt, and the procedure connection efficiency is greatly improved.
Owner:ZHEJIANG CHENWEI INTELLIGENT TECHNOLOGY CO LTD
Anti-sticking type pole-mounted circuit breaker transmission execution device
PendingCN122511772AConvenient circuit breaker control workAchieve the purpose of circuit breaker control
The present application relates to pole-mounted circuit breaker technical field, specifically to a kind of anti-stuck pole-mounted circuit breaker transmission execution device, including circuit control structure and transmission execution protection structure, transmission execution protection structure is fixedly installed with circuit control structure;Circuit control structure, for insulation circuit control, control insulation closing work by circuit insulation component, and circuit control structure includes insulating part, vacuum interrupter is installed on insulating part, first power connection seat is fixedly installed on vacuum interrupter, current transformer is installed on the front end of vacuum interrupter, and current transformer is communicated with circuit insulation component arrangement;Transmission execution protection structure, for circuit control.The structure is set, can prevent jamming work, realize internal continuous lubrication work, improve equipment service life.
Owner:BEIJING HCRT ELECTRICAL EQUIP
reducer
A reducer is provided. A reducer (100) according to an aspect of the present application includes: an internal gear (116) having a housing (122) that surrounds a main axis (1La) and a plurality of external pins (117) that are rotatably arranged in pin grooves (116b) provided in an inner periphery of the housing; an external gear (114) that is engaged with the internal gear; an eccentric body (112) that oscillates the external gear; a gear carrier (118, 120) that rotates relative to the housing; and a main bearing (124, 126) having an inner peripheral sliding surface (148) that rotates integrally with the housing and an outer peripheral sliding surface (149) that rotates integrally with the gear carrier. One of the inner peripheral sliding surface and the outer peripheral sliding surface is formed of resin, and the other sliding surface is formed of a heat conductive material having higher wear resistance than the resin.
Owner:NABTESCO CORP
Low-power-consumption high-reliability needle selection device and jacquard assembly and jacquard machine thereof
The low-power-consumption high-reliability needle selection device comprises a substrate, vertical hook guide rails are arranged on the two sides of the substrate, a pulley block sliding groove is formed in the middle of the substrate, an electromagnet is arranged on the upper portion of the substrate, armature hooks are arranged on the two sides of the electromagnet, and a closed magnetic circuit is formed after straight rod parts of the armature hooks are matched with two magnetic poles of the electromagnet; a vertical hook is arranged in the vertical hook guide rail of the substrate, and a harness cord pulley block is arranged in the pulley block chute; and a convex edge is arranged below the hook tip part of the vertical hook. According to the semi-active needle selection device, the magnetic pole end of the armature hook can move among the static magnetic gap position, the dynamic magnetic gap position and the closed magnetic circuit position, meanwhile, the design of the whole-course linear vertical hook guide rail and the vertical hook protruding edge is adopted, a new hook unhooking technology is formed, a large hook can be designed for reliable load bearing, and a user does not need to worry about unhooking difficulty of the large hook; the structure is compact, the power consumption is low, the transverse displacement precision of the armature hook is high, and the action reliability under the complex working condition can be guaranteed through sufficient design allowance.
Owner:WUJIANG WANGONG ELECTROMECHANICAL EQUIP +1
Oxygen multi-element medium mixing generation device
PendingCN121846937AImprove stabilityImprove adaptabilityFlow mixersTransportation and packagingMolecular sievePhysical medicine and rehabilitation
The invention relates to the technical field of health physiotherapy equipment, and particularly discloses an oxygen multi-element medium mixing generation device, which comprises an oxygen generation module, a medium generation module, a medium mixing module and a control module electrically matched with each module, the oxygen generation module comprises an air compressor and an adsorption assembly, the adsorption assembly is filled with a molecular sieve, the air compressor is used for supplying high-pressure air to the adsorption assembly, and the adsorption assembly is used for selectively adsorbing nitrogen in the high-pressure air in a pressurized state, so that oxygen is enriched and discharged to the medium mixing module; the medium generation module is used for generating a non-oxygen medium flow and outputting the non-oxygen medium flow to the medium mixing module; the medium mixing module is used for mixing and outputting oxygen and non-oxygen medium flow to an external space; the control module is used for adjusting the oxygen production amount of the oxygen production module, the output amount of the medium generation module and the mixing proportion of oxygen and non-oxygen medium flow according to the use environment parameters or user instructions.
Owner:FAMIDOC TECH CO LTD
Universal unlocking device for base station intelligent access control spare lock cylinder
The application discloses a universal unlocking device for a base station intelligent access control standby lock cylinder, which comprises a host end and a door lock receiving end, wherein the Type-C interface of the host end is connected with a communication module, a full-link ESD protection module, a power management and MOS tube on-off control module, a host end MCU control module, a multi-lock cylinder head adaptation module, a double-channel electronic switch and LIN bus communication module, a lock cylinder interface protection module and a man-machine interaction module. By replacing the lock cylinder adapter of different specifications and cooperating with the level detection of ID1 and ID2 identification contacts, the plug-and-play and quick adaptation of different interface lock cylinders are realized, and the whole machine does not need to be replaced. The application adopts a common single-chip microcomputer as the master control, directly supplies power and communicates through the mobile phone Type-C interface, completely avoids the battery power shortage problem, and greatly reduces the hardware cost. The application has the advantages of flexibility, hardware cost and emergency availability, and is suitable for the emergency unlocking and daily operation and maintenance scenes of the communication base station access control.
Owner:XIAN SAIERCOM CO LTD
High-density needle selection device based on double-layer pulley block trough plate and assembly of high-density needle selection device
ActiveCN119615485AImprove installation densitycompact structureWeft knittingHigh densityClassical mechanics
The high-density needle selection device comprises the double-layer pulley block groove plate provided with an upper pulley assembly functional layer and a lower pulley assembly functional layer, and the double-layer pulley block groove plate is internally provided with vertically-stacked pulley blocks and two pairs of vertically-designed vertical hooks corresponding to the vertically-stacked pulley blocks. The double magnets are stacked up and down, and the two pairs of armature hooks are different in design and correspond to the double magnets. An upper pulley assembly functional layer and a lower pulley assembly functional layer are designed in the double-layer pulley block trough plate, so that the two pulley blocks are accommodated under the condition that the thickness of the trough plate is not increased; different armature hook designs of the upper and lower electromagnets enable the front and rear surfaces of the spacer to adopt vertical hooks with the same shape; the shaft hole part of the armature hook is rotatably connected with the spacer, and the rotating shaft is outside a closed magnetic circuit of the electromagnet, so that the magnetic circuit is not influenced and is not influenced by the magnetic circuit. The needle selection device is compact in overall structure and good in leakproofness, the electromagnet is small in size and low in power consumption, and two sets of needle selection devices of the double-position double-acting jacquard machine can be contained in one unit.
Owner:WUJIANG WANGONG ELECTROMECHANICAL EQUIP +1
Island protection method for power distribution network containing distributed power supply based on transient characteristics
PendingCN119651504Aavoid interferenceHigh operational reliabilitySingle network parallel feeding arrangementsElectrical testingPower-system protectionTransient state
The invention relates to the field of power system protection, and relates to a transient characteristic-based distributed power supply-containing power distribution network islanding protection method, which comprises the following steps of: acquiring distributed power supply grid-connected point data, and determining a voltage setting value of islanding protection and an impedance setting value of islanding protection; determining an island protection setting value; obtaining harmonic impedance of the grid-connected point, and determining a harmonic voltage effective value according to the harmonic impedance; determining a voltage continuity parameter according to the harmonic voltage effective value and the voltage setting value, and determining an impedance continuity parameter according to the harmonic impedance and the impedance setting value of the grid-connected point; determining an island fusion action value; judging whether an island protection condition is met or not based on the island fusion action value and the island protection setting value, if yes, judging that the distributed power supply has an island, and otherwise, collecting data again; according to the method, the island protection criterion based on voltage and impedance is formed by using the weighting coefficient, the operation mode of the power distribution network is comprehensively judged from two aspects, and the probability of operation refusal and misoperation of island protection is effectively reduced.
Owner:ZHONGXIAN POWER SUPPLY BRANCH OF STATE GRID CHONGQING ELECTRIC POWER CO +1
Control method and system for protecting vacuum pump
ActiveCN118423262BGuaranteed uptimeStrong process adaptabilityPump testingPositive displacement pump components
The present invention proposes a control method and system for protecting a vacuum pump, the method comprising: using a temperature sensor to sense the temperature of a pump casing in real time; step 1, according to the temperature of the pump casing, the PLC mainboard of the vacuum pump determines whether it is necessary to turn on the fan of the unit and change the speed; step 2, according to the temperature of the pump casing, the PLC mainboard of the vacuum pump determines whether the motor needs to run to the first speed. The present invention solves the problem of heat dissipation of the unit and the problem of temperature difference between the inside and outside of the unit.
Owner:SHANGHAI HANBELL PRECISE MASCH CO LTD
Unmanned aerial vehicle locking and releasing mechanism with adjustable dead point
PendingCN121778229AHigh operational reliabilityExtended service lifeUncrewed vehicleStructural engineering
The invention discloses a dead-point-adjustable unmanned aerial vehicle locking and releasing mechanism which comprises an unmanned aerial vehicle hook, the unmanned aerial vehicle hook is matched with a hook seat, the hook seat is connected with a machine shell, a stop lever is hinged to the machine shell, the stop lever is hinged to a connecting rod, the connecting rod is connected with a crank, the crank is connected with the stop lever through a reset spring, and the reset spring is connected with the unmanned aerial vehicle hook. A limiting adjusting screw is arranged on the stop lever to push the connecting rod to adjust the dead point, or the stop lever is arranged to be of a telescopic structure, the dead point is adjusted by changing the length of the stop lever, or the connecting rod is arranged to be of a telescopic structure, and the dead point is adjusted by changing the length of the connecting rod. The unmanned aerial vehicle locking and releasing mechanism has the advantages that the dead point of the unmanned aerial vehicle locking and releasing mechanism can be adjusted, the phenomenon that the mechanism passes through the dead point due to machining errors or use abrasion is avoided, the use reliability of the device is improved, and unmanned aerial vehicle ejection is safer.
Owner:BEIJING MECHANICAL EQUIP INST
Gas wave refrigerator
ActiveCN224398042Ueasy to separateStable and efficient air wave refrigeration processCompression machinesRefrigeration componentsCold airElectric machinery
The utility model relates to refrigerating machine technical field discloses a kind of gas wave refrigerating machines, including shell, the bottom surface of the shell is fixedly connected with machine base, the end side of the shell is communicated with air inlet pipe, the end surface of the air inlet pipe is fixedly communicated with flange one, the end side of the flange one is fitted with flange two, and the filter assembly is installed between the flange one and flange two, the top surface of the shell is fixedly connected with motor, the output end of the motor is fixedly connected with rotating shaft, the outer ring of the rotating shaft is fixedly sleeved with runner distributor, the outer ring of the runner distributor is communicated with nozzle, the outer ring of the shell is communicated with multiple oscillation pipes, and the end of multiple oscillation pipes is respectively connected with cold air outlet pipe, and the bottom surface of the shell is communicated with hot gas outlet pipe.The utility model uses the grouping alternation mode of the number of nozzle less than the number of oscillation pipe, and the running process is smooth, airflow pulsation is small, and the overall vibration and noise of equipment are lower, and the operation reliability is stronger.
Owner:DALIAN HONGKE SCI & TECH ELECTROMECHANICAL EQUIP CO LTD
A liquid chromatograph one-way valve
The utility model relates to one -way valve technical field especially relates to a liquid chromatograph one -way valve, solved the problem among the prior art. A liquid chromatograph one -way valve, including the tubulature, both ends of tubulature all have the threaded connection pipe of intercommunication, the inside one side of tubulature is connected with the water inlet pipe, the top elastic connection of water inlet pipe has the valve cover, the inside upper portion one side of water inlet pipe is fixedly connected with the connecting plate. The utility model makes the valve cover and the connecting plate between form by the initiative reset mechanism of extension spring drive, has improved the response speed and action reliability of valve cover closing significantly, even under the working condition that pump cavity pressure drops rapidly or exists transient negative pressure, can also ensure that the valve cover resets seal quickly, has prevented the reverse leakage of mobile phase, improved the stability of infusion flow and the repeatability of analysis data, avoided the baseline fluctuation and chromatographic peak distortion caused by backflow or bubble introduction.
A pilot-operated combined safety valve core structure and its application method
This invention discloses a combined safety valve core structure with pilot function and its usage method, relating to the field of safety valve technology. The main valve core is slidably and sealed to the inner wall of the valve body, while a secondary valve core is slidably and sealed to the central through-hole. A lower spring is sleeved around the secondary valve core. A main valve core seat is located at the bottom of the valve body. A pressure chamber is formed between the upper end face of the main valve core and the top of the inner wall of the valve body. The bottom medium inlet of the valve body is connected to the pressure chamber via a branch pipe. An upper spring is located within the pressure chamber, and a secondary valve core seat is located at the connection between the branch pipe and the top of the valve body. This invention achieves a synergistic effect of "secondary valve core pilot triggering and main valve core rapid response" through the coaxial nesting design of the main and secondary valve cores, combined with a dynamic balance mechanism between the upper and lower spring forces and the medium pressure. This invention possesses the rapid response characteristics of a direct-start safety valve, while also having the advantages of a pilot-operated safety valve, such as good sealing performance, pilot characteristics, and minimal impact from back pressure.
Owner:ZHEJIANG UNIV
Controller sliding rail with rolling wheels
ActiveCN224214574UEffectively respond to out-of-control developmentsEffectively deal with automatic sliding back problemsLinear bearingsClassical mechanicsStructural engineering
Owner:SUZHOU YIHEDA AUTOMATION TECH CO LTD