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55results about How to "Easy to switch freely" patented technology

Silica-based liquid crystal stereo projection light machine

InactiveCN102402016ARealize color stereoscopic projection displayContrast balanceProjectorsStereoscopic photographyBeam splitterImaging quality
The invention provides a silica-based liquid crystal stereo projection light machine which can realize colorful three-dimensional stereo display. An engine mainly comprises a lighting source, two polarization light splitting devices, two reflection-type silica-based liquid crystal micro display chips, a projection objective lens and the like. The light machine provided by the invention adopts the two polarization light splitting devices so as to allow imaging light incident on the reflection-type silica-based liquid crystal micro display chips and imaging light reflected from the reflection-type silica-based liquid crystal micro display chips to pass through a polarization light splitting film of a polarization light splitting lens twice, and one time is transmission, and the other time is reflection, therefore, the extinction ratio of the work light is greatly improved, moreover, the extinction ratios of two emergent polarized light beams are completely equal, so that the contrast ratio of an injection image is effectively improved, and the image quality is improved. More importantly, compared with the existing stereo projection device adopting four polarization light splitting devices, the silica-based liquid crystal stereo projection light machine adopting the two polarization light splitting devices obviously reduces the manufacture cost and the technology difficulty, thereby being beneficial to the large scale production. The silica-based liquid crystal stereo projection light machine can realize the switchover of the three-dimensional image display and the two-dimension image display.
Owner:NANJING UNIV OF POSTS & TELECOMM

Multi-mode synchronous triggering control circuit and method thereof in automatic ultrasonic detecting system

The invention discloses a multi-mode synchronous triggering control circuit in an automatic ultrasonic detecting system, which is characterized by comprising a trigger mode switching circuit, whereina robot controller and a rotary table axis motion control card are arranged at the input ends of the trigger mode switching circuit; the trigger mode switching circuit comprises a relay K1, a relay K2, a relay K3 and a relay K4; the relay K1 and the relay K2 control the robot controller through a trigger circuit, and are used for implementing an external trigger mode in arcuate C-scan imaging; therelay K3 is used for implementing the external trigger mode in spiral C-scan imaging; the relay K4 is used for implementing an internal trigger mode; and the switching of different modes of the trigger mode switching circuit is realized by controlling the closing and opening of the relay K1, the relay K2, the relay K3 and the relay K4 through upper computer software. The invention further discloses a control method which is characterized in that the automatic switching of the ultrasonic detecting system is controlled by an upper computer; and the control circuit is simple in structure, convenient to operate, and strong in universality.
Owner:CHINA WEAPON SCI ACADEMY NINGBO BRANCH

Electrode-started low-power-consumption marine instrument positioning beacon and start-stop method

PendingCN111580037ASave procurement and production costsSave on power supply costsBeacon systems using radio wavesPosition fixationSeawaterElectrically conductive
The invention belongs to the technical field of beacon machines and particularly relates to an electrode-started low-power-consumption marine instrument positioning beacon and a start-stop method. Anelectrode is arranged on the beacon; when the electrode enters the water, electrolyte is dissolved in the water to generate free charged ions, and the charged ions directionally move to achieve conductivity; a water switch circuit connected with the electrodes is used for switching on and switching off a power supply to realize low power consumption of the beacon. The beacon machine is advantagedin that the external electrode is convenient for free switching of a working state of a beacon machine by utilizing the seawater conduction principle, a condition starting circuit is used for startingan underwater switching circuit in the circuit board, so the number of sensing assemblies in the beacon machine is reduced, and energy consumption is reduced; a cylindrical surface structure is adopted for tool design, fixing and mounting are convenient, the application range is wide, and the beacon can be widely applied to the field of industrial production.
Owner:INST OF OCEANOLOGY - CHINESE ACAD OF SCI

Thermal-stamping formation method for rapidly and efficiently realizing performance gradient distribution of high-strength steel part

The invention discloses a thermal-stamping formation method for rapidly and efficiently realizing performance gradient distribution of a high-strength steel part. The thermal-stamping formation methodcomprises the following steps: step (1) placing a plate material on the upper surface of a lower mold block of a thermal-stamping forming device; step (2) providing current for induction coils whichare separately arranged inside heating holes of an upper mold block and the lower mold block, and controlling the heating temperature of a front region and a rear region of each of the upper mold block and the lower mold block according to performance gradient distribution requirements of a thermally formed part; step (3) controlling the upper mold block to move upwards to a maximum position so that the upper mold block forms a convex die of a thermal stamping device, and controlling the lower mold block to move downwards to the maximum position so that the lower mold block forms a concave dieof the thermal stamping device; step (4) controlling the upper mold block to rapidly move downwards to realize stamping formation; and step (5) charging cooling water channels of the upper mold blockand the lower mold block with cooling water to finally obtain a high-strength steel thermally-formed part which satisfies the performance gradient distribution requirements.
Owner:JILIN UNIV

Amphibious motorbike ascending and descending damper

The invention discloses an amphibious motorbike ascending and descending damper. The amphibious motorbike ascending and descending damper comprises a piston cylinder and a piston rod. A low-pressure oil port and a high-pressure oil port are welded to the two ends of the side wall of the piston cylinder respectively and communicated with an inner cavity of the piston cylinder, a sliding piston is installed in the piston cylinder in a sliding mode, an abrasion-proof washer and an oil seal are embedded in each of the two ends of the outer wall of the sliding piston respectively, the piston rod isconnected to the sliding piston through a thread, and an end sealing cover is installed at the end, closes to the low-pressure oil port, of the piston cylinder. The amphibious motorbike ascending anddescending damper has the advantages that the overall length can be adjusted through extension and contraction in use, the distances between wheels and a vehicle body can be adjusted, supporting canbe achieved, damping can also be carried out through a damping spring soaking in hydraulic oil in the advancing process, and the damping performance of a motorbike is improved; and the amphibious motorbike can freely switch the heights of wheel bodies in land and water environments and adapt to different environments, and practicability can be improved.
Owner:白德雪

Railway phase-sensitive track circuit practical training platform

ActiveCN107967850AMeet the needs of experimental training and practical teachingAvoid damageEducational modelsInformation technology support systemTransformerVoltage regulation
The invention provides a railway phase-sensitive track circuit practical training platform. The platform uses the integrated structure design and comprises an upper computer, a fault setting unit, a miniature power screen, a combined circuit and outdoor equipment. The outdoor equipment comprises a track transformer and a steel rail. The upper computer is used for practical training operation. Thecombined circuit is used for simulating controlling the outdoor equipment. The fault setting unit is used for fault setting or fixing. The miniature power screen is used for providing a track power supply, a local power supply and the working power supply of the internal circuit of the practical training platform. According to the practical training platform, two segment track circuits are established to be consistent with the site so that real simulation of the site fault of the railway can be performed, the function of manual adjustment of voltage and automatic voltage stabilization can be realized, free switching of microelectronic and relay phase-sensitive track circuits can be conveniently performed, fault simulation of two phase-sensitive track circuits can be realized, fault settingand fixing are completed on the upper computer, and thus the teaching efficiency is high and the requirements of the railway vocational colleges for experimental and practical teaching of the phase-sensitive track circuit can be met.
Owner:LIUZHOU RAILWAY VOCATIONAL TECHN COLLEGE

Automatically controlled explosion-proof and dust-proof hot and cold difunctional vacuum kneader big cover

The invention discloses an automatically controlled explosion-proof and dust-proof hot and cold difunctional vacuum kneader big cover. The purpose of the invention is to solve the technical problem ofexplosion due to mixing of strong static electricity and high heat, generated in the intensive mixing, kneading, crushing, dispersing and grinding processes of a material in an existing vacuum kneader stirring cylinder, and high-fineness dusts in the cylinder. The automatically controlled explosion-proof and dust-proof hot and cold difunctional vacuum kneader big cover comprises a big cover, thebig cover is provided with a channel, the channel is covered with a cloth bag cover, a dust absorbing sleeve assembly is arranged above the cloth bag cover, the upper part of the dust absorbing sleeveassembly is provided with a dust absorbing port, cloth bag cover moving mechanisms and explosion-proof membrane covers are respectively arranged at two sides of the channel, and an automatic controlpower box is arranged at one side of a big cover supporting pillar. The automatically controlled explosion-proof and dust-proof hot and cold difunctional vacuum kneader big cover has the advantages ofautomatic programmed control of motion and compaction of the cloth bag cover and the explosion-proof membrane covers, achieving of effectively adsorbing flying dusts in the stirring cylinder, reduction of the explosion risk, realization of cold machine and hot machine integrated one-machine production, and reduction of the device investment, the workshop area and waste gas discharge induced by cylinder body replacement.
Owner:如皋市腾飞机械有限公司

Hydraulic integrated control unit for hydraulic interconnection suspension and control method thereof

The invention belongs to the technical field of vehicle suspensions, and particularly relates to a hydraulic integrated control unit for hydraulic pressure of a hydraulic interconnection suspension and a control method of the hydraulic integrated control unit. The control unit comprises a shell, a controller interface, a base body and an auxiliary assembly. The shell is fixedly connected with thebase body to form a sealed chamber. An electromagnetic valve is placed in the base body. The auxiliary assembly is mounted on the base body. The controller interface is fixed to the shell and is connected with the controller. An electromagnetic coil assembly is fixed to the base body through a connecting member to position a valve disc of a valve core assembly. A valve rod in the valve core assembly is in threaded connection with a moving iron core in the electromagnetic coil assembly. By means of the hydraulic integrated control unit for the hydraulic interconnection suspension and the control method, through the integration management of the electromagnetic valve, a hydraulic cylinder port, an oil injection valve, an accumulator port, an electrical control hardware structure and the like, a hydraulic interconnection suspension system is enabled to be modular, miniaturized and lightweight, the maintainability and safety of the system are greatly improved, and damage caused by other components of a vehicle or the intrusion of external objects is effectively avoided.
Owner:JILIN UNIV

High-strength steel part hot-stamping forming device with gradient distributed performance

The invention discloses a high-strength steel part hot-stamping forming device with gradient distributed performance. The high-strength steel part hot-stamping forming device with the gradient distributed performance comprises an upper die seat, an upper fixing plate, a plurality of upper die blocks, a lower die seat, a lower fixing plate and a plurality of lower die blocks; the upper fixing plateis mounted on the upper part of the upper die seat through a first air pressure device, the upper fixing plate is provided with an upper fixing plate protruding part and an upper fixing plate groovepart, and a second air pressure device is mounted on the upper fixing plate groove part; the multiple upper die blocks are fixedly connected with the upper fixing plate protruding part and the secondair pressure device correspondingly, and each upper die block is provided with a heating hole channel and a cooling water channel; the lower fixing plate is fixed to the upper part of the lower die seat, the lower fixing plate is provided with a lower fixing plate protruding part and a lower fixing plate groove part, and a third air pressure device is mounted on the lower fixing plate groove part;and the multiple lower die blocks are fixedly connected with the lower fixing plate protruding part and the third air pressure device correspondingly, and each lower die block is provided with a heating hole channel and a cooling water channel, wherein the upper fixing plate protruding part is matched with the lower fixing plate groove part.
Owner:JILIN UNIV

Lawnmower

The invention provides a lawnmower, which comprises: a body; a cutting mechanism; a separating mechanism, wherein the separating mechanism is provided with a first position for opening the air channelshell and a second position for closing the air channel shell; a switching mechanism, wherein the switching mechanism is in transmission connection with the separating mechanism, and the switching mechanism can drive the separating mechanism to move so that the separating mechanism is in the first position or the second position; the lawnmower also comprises a transmission mechanism, wherein thetransmission mechanism is in transmission connection with the switching mechanism and the separating mechanism; the switching mechanism can move between different positions to drive the transmission mechanism to drive the separating mechanism to be in the first position or the second position. The switching mechanism drives the separating mechanism to move through the transmission mechanism so that the separating mechanism can open or close the air channel shell of the cutting mechanism so as to realize the free switching of the grass crushing operation mode and the grass collecting working mode of the lawnmower, which effectively solves the problem that the switching of the grass crushing working mode and the grass collecting working mode by plugging and the extracting a grass crushing block is complex in operation. The operation of the lawnmower is simple and convenient.
Owner:POSITEC POWER TOOLS (SUZHOU) CO LTD

Intelligent rotatable practical teaching platform

The invention discloses an intelligent rotatable practical training teaching platform, which comprises a seat frame, a rotatable polyhedral rotating table is arranged on the seat frame, the rotating table performs intermittent rotary motion under the action of a rotation driving mechanism, a plurality of surfaces of the rotating table are respectively provided with a practical training unit, each practical training unit can be provided with a son plug, a mother plug is arranged in the rotating table, and the mother plug is connected with the son plug. The rotation driving mechanism comprises a rotating shaft, the rotating shaft comprises a threading pipe and a rotating shaft sleeve, the rotating shaft sleeve is rotatably mounted on the seat frame, the rotating table is fixedly connected with the rotating shaft sleeve, the threading pipe is mounted in the rotating shaft sleeve, and the threading pipe is fixedly connected with the rotating shaft sleeve. The outer end of the threading pipe penetrates out of the seat frame and is fixedly connected with the seat frame, the inner end of the threading pipe is located in the rotating table, and an electrical cable can be arranged in the threading pipe in a penetrating mode. According to the invention, different practical training units can be freely and conveniently switched, the rotation positioning precision is high, and electricity and gas sources can be conveniently provided for each practical training unit.
Owner:YALONG INTELLIGENT EQUIP GRP CO LTD

Electric vehicle speed control system and method capable of free switching between dual modes

The invention discloses an electric car speed control system with two modes switched freely and an electric car speed control method. An automatic speed controller is additionally installed at the front end of an original speed controller of an electric car. The automatic speed controller is centered on an embedded control system and comprises an electronic switch and the other components. A control signal of an original motor controller of the electric car is from an original car acceleration pedal, a gear switch and a brake pedal. The automatic speed controller and the original motor controller are connected with the original car acceleration pedal, the gear switch and the brake pedal. The computer control signal or the signal of the original car acceleration pedal, the gear switch and the brake pedal or a control signal of a computer is received selectively according to the difference between the manual driving working mode or the computer control working mode. The original car speed control signal and the computer control signal are switched reasonably in the situation that an original car system is not transformed greatly. It can be guaranteed that the corresponding control signals are input to the original motor controller in the corresponding modes.
Owner:BEIJING UNION UNIVERSITY
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