48results about How to "Reduce own cost" patented technology

A magnetorheopectic flexible fixture suitable for the workpieces with different shapes and characteristics is composed of locating head and fixture body. Said locating head consists of pin, spring, frame and fastener. Said fixture body comprises base, recepting pool, press bar, magnetic exciting part, core rod and magnetorheopectic material. Said locating head and magnetorheopectic material are contained in the cavity of said recepting pool for clamping the workpiece.

The invention provides a hardware-in-the-loop test bench and test method for the electronic brake system of a commercial vehicle based on a TTC580 controller. The test bench is composed of an air source component, an air pressure test bench component, a controller and a host. The test bench acquires pressure signals of four brake chambers and a throttle pedal opening signal through an analog acquisition channel of the TTC580 controller, outputs a drive signal to a front axle single channel module, two ABS solenoid valves of the front axle and a rear axle double channel module through a PWM output channel of the TTC580 controller, and acquires a brake pedal opening signal and a steering wheel angle signal through a digital acquisition channel of the TTC580 controller. The host and the TTC580 controller are connected by the Ethernet to realize data transmission. The test bench and the test method meet the requirement for rapid development of electronic brake systems for commercial vehicles, and reduce the cost of hardware-in-the-loop test.

The invention relates to a one-way transmission device with a buffer function. A first friction ring and a second friction ring are respectively connected with an inner ring assembly and an outer ring assembly through a reinforcement transmission mechanism and a conical face friction pair in matching mode, wherein the inner ring assembly and the outer ring assembly can rotate around the same axis, the reinforcement transmission mechanism is in a constant meshed state, and the conical face friction pair exerts initial pressure through an elastic pre-tightening piece. When tangential external component force in different directions appears between the inner ring assembly and the outer ring assembly, under the effect of the reinforcement transmission mechanism, the conical face friction pair rotates in sliding mode or keeps a static state, and therefore the unidirectional transmission torque function similar to an overrun clutch is achieved. In addition, the one-way transmission device has excellent buffer performance, effectively buffers various impact force in the process of mechanical transmission and prolongs service life of a transmission system.

The invention discloses an embedded system power switch control circuit which is formed by connecting a power input end (a), a counter-attack schottky diode (b), a power switch power tube (c), a power holding control transistor (d), a power switch (f), a trigger and shutdown signal detection double-diode set (e), a direct current voltage stabilizing circuit (g) and other resistance-capacitance devices. The power input end (a) is connected with the counter-attack schottky diode (b) to form a reverse connection prevention input circuit; the power switch (f) is connected with the trigger and shutdown signal detection double-diode set (e) to form a startup and shutdown triggering circuit; and the power holding control transistor (d) is connected with the power switch power tube (c) to form a power supply holding circuit. The embedded system power switch control circuit disclosed by the invention is an embedded system power supply circuit which is low in cost, high in energy saving, convenient and practical, and has very high economy, practicality and reliability.

The invention discloses a sea cable insulation fault monitoring method based on a temperature field of a photoelectric hybrid submarine cable. The method comprises the steps of calculating heat generation rate parameters of an armor layer and a metal shielding layer 6 according to the current-carrying capacity of the submarine cable, establishing a submarine cable temperature field model based ona thermoelectric coupling module, calculating a temperature field of the submarine cable in operation, calculating a dielectric loss factor tan delta, and evaluating the insulation status of the submarine cable. According to the method, the insulation status of the submarine cable can be effectively monitored, the monitoring is not susceptible to the influence of electromagnetic interference, through establishing a physical model, a numerical calculation method is used to solve the temperature field, the determination of a correction coefficient is not needed, the heat generation rates of thearmor layer and the metal shielding layer 6 are calculated based on an iterative method, the accuracy of a modeling calculation result is high, and the accuracy of subsequent temperature field calculation is ensured while the amount of calculation is reduced.

The embodiment discloses a switch and a network computer room for placing the switch. The switch comprises a cabinet, a middle plate and a plurality of plug-in cards, wherein each plug-in card includes two port switch chip, one internal connection switch chip, a port connector, a middle plate connector and a guide rail, wherein the ports of the port switch chip are divided into the same number of external connection ports and inner connection ports; the external connection ports are connected with the port connector; the internal connection ports are respectively connected with the internal connection switch chip in each plug-in card; the internal connection ports and the ports of the internal connection switch chips, which are connected across the plug-in cards, are respectively connected with the middle plate connector, so as to achieve connection between the internal connection ports and the internal connection switch chips of different plug-in cards through the middle plate connector; the cabinet includes guide rail slots with the same number of the plug-in cards; and the plug-in cards can be plugged in or pulled out by inserting or pulling the guide rail along the insertion hole of the guide rail slots. The embodiment can improve integrity degree and reduce number of the plug-in cards of the switch, thereby effectively reducing the switch size.

The invention discloses a split encoder integrated with a grating and a motor shaft. The split encoder comprises a circuit board, a main body, a movable grating base and a motor, wherein the motor comprises a first mounting surface, a second mounting surface and the motor shaft, the first mounting surface and the second mounting surface are staggered to form a first circumferential surface, the motor shaft comprises a shaft end surface, a threaded hole in the axis and a limiting surface, the main body comprises a first fitting surface, a second fitting surface and a central through hole, the first fitting surface and the second fitting surface are staggered to form a second circumferential surface, a movable grating is mounted on the movable grating base, and the movable grating base is matched with the motor after passing through the central through hole of the main body. By adopting the bearingless mounting structure, the movable grating base is directly mounted on the motor shaft, and the motor shaft directly drives the movable grating base to rotate, thereby saving two bearings of the conventional encoder. The main body of the encoder is directly mounted onto the mounting planeof the motor, thereby saving a blade spring used for connecting the encoder main body and the motor for the traditional encoder.

The embodiment discloses a plug-in board, a switch employing the plug-in board and a switch design method. The switch comprises a middle plate and a plurality of plug-in boards adopting the same structure, wherein each plug-in board comprises two port exchange chips, an interconnection exchange chip, a port connector and a middle plate connector; the ports of the two port exchange chips are divided into external connection ports and interconnection ports, which are in the same quantity; the external connection ports are connected with the port connector; the interconnection ports are respectively connected with the interconnection exchange chip in each plug-in board; the interconnection ports and the ports of the exchange chips, which need to span over the plug-in board for connection, are respectively connected with the middle plate connector; and the middle plate connector is in plug-in connection with the middle plate provided with a connection circuit, so as to achieve connection between the interconnection ports and the interconnection exchange chips of different plug-in boards. The embodiment effectively improves the integration level of the plug-in board of the switch and reduces the consumption of the plug-in boards, thereby enabling the assembly density of the switch to be increased and further effectively reducing the size of the switch.

The invention discloses finite element simulation-based submarine umbilical cable temperature field analysis, and relates to the technical field of umbilical cable temperature field simulation. The method comprises the following steps of: 1, establishing a submarine umbilical cable geometric model in ANSYS simulation software; 2, inputting the composition material parameters of each part of the submarine umbilical cable into ANSYS simulation software, establishing a submarine umbilical cable finite element model, and performing mesh generation; 3, setting a water area around the submarine umbilical cable; 4, setting the value ranges of the ambient temperature, the working current and the convective heat transfer coefficient of the umbilical cable; 5, modeling and simulating the steady-state temperature field of the umbilical cable; 6, modeling and simulating a local heating steady-state temperature field of the umbilical cable; and step 7, modeling and simulating the transient temperature field of the umbilical cable. According to the invention, the submarine umbilical cable temperature field under complex structure and environmental conditions can be accurately calculated, and thenonlinear mapping relationship between each layer of the umbilical cable and the optical fiber temperature can be simply and conveniently obtained.

The invention provides a gas cylinder lightweight frame and an LNG vehicle adopting it. The lightweight frame comprises pull bands and fixed racks; each of the fixed racks comprises a main body and a holding portion, the bottom of the main body is a fixed joint surface, the holding portion is a supporting plate invaginating into the main body from the top surface of the main body, the profile of the supporting plate corresponds to the outer contour of a gas cylinder, the invaginated gap of the supporting plate equals to or is smaller than half of the cross section shape of the gas cylinder, and the gas cylinder is fixed on the fixed racks through the supporting plate; and two ends of the pull bands are connected to the fixed racks in order to make the gas cylinder fixed in the holding portion in a tensioning manner. The stamping frame has the advantages of simple structure, short making cycle, high consistency, effective reduction of the deadweight of a product, and meeting of a lightweight requirement.

Battery charger circuit operated from a three-phase network, comprises a three phase mains transformer with three secondary windings and three parallel connected pairs of series diodes, wherein the central interconnection lines of each of the series pairs of diodes are connected to respective end terminals of an associated one of the three secondary windings of the transformer, and the battery charger circuit comprises three similar circuits each of them is associated with a respective phase, each of the similar circuits comprises a permanently connected electrolytic capacitor (CR1, CS1, CT1)and a diode (DR, DS, DT) in parallel with the capacitor, wherein one end of the similar circuits is connected to the other terminal of the secondary winding (S1, S2, S3) of the associated phase, and the other ends of the similar circuits are interconnected.

The invention provides a bank note processing and packing system which comprises a first operation table, wherein a first conveyor belt, a note chamfering machine, a passbook automatic feeding device, a coding machine and a paper thickness detector are mounted on the table surface of the first operation table; an oblique baffle is mounted on the first operation table at one end of the first conveyor belt; one end of the first operation table is in butt joint with one side of a second operation table; a hand-press sealing machine and a second conveyor belt are mounted on the second operation table; the tail end is in contact with one side of a roller conveyor; and the roller conveyor is in butt joint with a plastic film shrinkage packing machine. The system provided by the invention can perform automatic coding of the passbook products bound into books in the passbook packing process so that the serial number is not influenced even if another link in the passbook production process fails; and moreover, the complementary operation is not required, flow process of the passbook packing step is realized, the labor intensity of the workers can be reduced, the packing efficiency is improved, and the equipment is compact and occupies a small area.

The invention discloses a supporting device for a building. The supporting device comprises a supporting table panel. The upper surface of the supporting table is inwards concave close to the middle to form a containing cavity. A cover plate flush with the upper surface of the supporting table panel is arranged on an opening of the containing cavity. Supporting upright columns are vertically arranged on the portions, close to the two sides, of the lower surface of the supporting table panel. A reinforcing plate is disposed between the two supporting upright columns and located on the lower surface of the supporting table panel. The two ends of the reinforcing plate are both fixed to the supporting upright columns, and the tops of the supporting upright columns are fixed to the supporting table panel. The supporting upright columns are of a telescopic structure, the bottoms of the supporting upright columns are connected with a base, the supporting upright columns are fixed to the base, base anchors are arranged at the bottom of the base and connected with the base through detachable screws, and rolling devices are arranged on the lower surfaces of the base anchors and detachably connected with the base anchors. The supporting device for the building is novel in design, large in structural strength, wide in work area range, high in work efficiency, low in cost, convenient to operate and more convenient to move, the supporting height can be selected according to actual requirements, time and labor are saved when the supporting device is transported, and use flexibility is enhanced.

The invention discloses a low pressure filtration heat exchanger. The low pressure filtration heat exchanger is provided with an upper housing unit and a lower housing unit which are assembled into a whole in detachable mode and distributed from the top down, and the interior of the low pressure filtration heat exchanger is provided with a fuel gas flow cavity, wherein the fuel gas flow cavity is provided with a fuel gas inlet end and a fuel gas outlet end which are connected with an automobile fuel gas feed pipeline, a fuel gas flow guidance structure used to guide fuel gas which enters into the upper housing unit from the fuel gas inlet end into the fuel gas flow cavity so as to enable the flue gas to fully touch the housing wall of the lower housing unit is arranged in the upper housing unit, a discharge device used to discharge sewage is arranged at the bottom of the lower housing unit, a housing structure is arranged on the external circumference of the lower housing unit, the housing structure and the lower housing unit together form a closed engine coolant flow cavity structure, and the engine coolant flow cavity structure is provided with a cooling medium inlet and a cooling medium outlet which are arranged in stagger mode from the top down. The low pressure filtration heat exchanger can guarantee opening reliability of a nozzle of a natural gas engine when the natural gas engine runs in low temperature severe environments, at high speed and under heavy load, and is low in cost.