67results about How to "Protection has" patented technology

The invention relates to a multifunctional current impulse transmitter and a control method. The transmitter is formed according to the following method: the positive electrode of a two-gear direct current power supply is connected with a depressurization chopping constant-current circuit, a clamping circuit, a short-circuit and bridge arm direct connection protective circuit, a bipolar current impulse generator and a load through a switch K; and the negative electrode of the two-gear direct current power supply is connected with the load through the depressurization chopping constant-current circuit and the bipolar current impulse generator. According to the invention, the two-gear direct current power supply is adopted to coarsely regulate an output voltage; the depressurization chopping constant-current circuit is used so as to precisely regulate the output voltage, thereby reducing the variation range of the duty ratio of the depressurization chopping constant-current circuit and improving efficiency; the clamping circuit can perform bootstrap on a capacitor of a clamping voltage source to generate a high voltage in no need of improving the voltage of a direct current power supply or providing an auxiliary power supply; the linearity and the steepness of the failing edge of the current impulse are changed through regulating the voltage of the linear clamping voltage source; and the short-circuit and bridge arm direct connection protective circuit is matched with an impulse controller, so that the circuit has a self-repairing function after a failure is removed.

The invention discloses an electronic cam control device and an electronic cam curve generation method thereof. The device comprises an information reading unit used for reading and analyzing a driven shaft position setting file; an electronic cam curve generation unit used for generating an electronic cam curve according to limiting conditions set by a user; an electronic cam curve memory unit used for storing the generated electronic cam curve; a position command generation unit used for referring to position feedback of a driving shaft and converting a stroke plan of the electronic cam curve into a position command; and a command output unit used for outputting the position command to a driven shaft driving unit which acts according to the received position command. In a stoke planning process, a solver meeting conditions is selected according to the limiting conditions and a solving result of the last time until a solution meeting the limiting conditions is found; and in the solving process, the speed, acceleration, accelerated acceleration and the like in the process are considered, and a machine bench protection function is achieved.

The invention discloses an ecological environment-friendly pig breeding house which comprises a pigpen, wherein an exhaust hole is formed in the right side of the pigpen; a fence is arranged on the left side of the pigpen, and is fixedly connected with a faucet; a manger is arranged under the faucet; a disinfecting sprayer is arranged above the pigpen; a temperature sensor is arranged on the left side of the disinfecting sprayer, and is electrically connected with an energy supply device through a wire; the energy supply device is fixedly connected with a biogas digester; the biogas digester is fixedly connected with a defecation device; the energy supply device is electrically connected with a radiating device through the wire; a ventilating pipeline is arranged above the radiating device; an illuminating lamp is arranged above the ventilating pipeline, and is electrically connected with the energy supply device through the wire; a sunshade ventilating device is arranged on the left side of the illuminating lamp. The ecological environment-friendly pig breeding house has the advantages of reasonable structure design, resource saving effect, environment protection effect and wide popularization and application.

The invention belongs to the technical field of automobile parts, and particularly relates to a damper with overload protection and an electric tail gate support rod. An overload switching seat is arranged on the first side of a cavity of the damper so that the overload switching seat can rotate around a rotating shaft. An overload friction block is arranged on the first side of the overload switching seat by overload steel balls so that the overload switching seat can rotate around the rotating shaft and drive the overload friction block to rotate around the rotating shaft by the overload steel balls. A friction plate is arranged on the first side of the overload friction block. A fixed plate is arranged on the first side of the friction plate and is fixed in the cavity of the damper so that the fixed plate can not rotate around the rotating shaft. A flexible assembly is arranged on the first side of the fixed plate to pressurize on the fixed plate. According to the damper with overload protection and the electric tail gate support rod, the technical defect that an existing electric tail gate support rod does not have the overload protection function is effectively solved.

The method of establishing intelligent virtual control for intelligent virtual control instrument includes the following steps: determining the configuration of intelligent virtual control; determining the math model of intelligent virtual control including decomposing into modules, establishing math model, algorithm design and program description; establishing the non-intelligent virtual control library; and establishing the development system and making the intelligent virtual control in Windows system through selecting proper non-intelligent virtual controls, setting the physical attributes of the non-intelligent virtual controls, endowing functions for the non-intelligent virtual controls, and testing and fusing the non-intelligent virtual controls. The present invention has the technological effects of integration, being economic, interactive, opened, fast in response and green, etc.

The present invention relates to a protective device of a boost converter. The boost converter comprises an inductance connected between a first node and a second node, a first switch connected between the input end of the boost converter and the first node, a second switch connected between the second node and a grounding end, and a boost connected between the second node and the output end of the boost converter. The protective device comprises an overvoltage protective circuit, a defect protective circuit and a current source. The protective device is characterized in that the overvoltage protective circuit is connected with the second node; when voltage on the second node is larger than a first threshold value, a first signal and a second signal are generated; the second signal is used for opening the second switch and discharging to the second node; the detect protective circuit is used for closing the first switch according to the first signal; the current source is connected with the second node to provide an advanced charging current to charge the second node after the first switch is closed.

The invention relates to a bolt fastened type ocean high-pressure reinforced thermoplastic pipe (RTP) connector. The bolt fastened type ocean high-pressure RTP connector is mainly composed of an inner dabber, an outer fastening sleeve and a taper locking sleeve arranged between the inner dabber and the outer fastening sleeve, wherein the inner dabber comprises a sealing flange, a connection shaft neck, a first fastening flange and an inner pipe sleeve; the outer fastening sleeve comprises a second fastening flange and an outer casing pipe with taper; the taper locking sleeve is composed of multiple clamping shaft pieces evenly distributed in the circumferential direction of a pipe body; the multiple clamping shaft pieces are arranged at intervals to form a ring; the clamping shaft pieces are wedge blocks with the thickness continuously decreasing in the axial direction; the inner surfaces of the wedge blocks are inward arc faces, the outer surfaces of the wedge blocks are conical faces, and the conical faces of the clamping shaft pieces are in contact fit with the inner conical face of the outer casing pipe and provided with multiple positioning grooves. The bolt fastened type ocean high-pressure RTP connector is convenient to disassemble and assemble, low in requirement for equipment and working conditions and capable of being reused, and saves the cost.

The invention relates to a simulation rainfall test device used for an electric device. The test device comprises a water tank, a water transmission member and water spraying mechanisms, which are successively arranged. The water transmission member comprises a water pump and a buffering assembly. The water pump is connected with the water tank and parallel-connected water spraying branches. The buffering assembly is arranged between the water pump and the buffering assembly. Each of the water spraying members comprises a valve and a nozzle movably connected with a corresponding branch. According to the invention, it is ensured that a high-voltage electric device can get wet in the simulation rain satisfying requirements during an electric test in a rainfall state and reliability of the device in a natural rainfall condition is verified.

A method for forming large scale of virtual test instrument library includes setting up instrument library structure; structuring non-intelligent control piece library, function library, intelligent control piece library and instrument library, laminating instrument library to generate development platform of intelligent control piece instrument and development platform of layer. The large scale of virtual test instrument library formed by said method is also disclosed.

The invention discloses a hydrotreating catalyst. The hydrotreating catalyst comprises a metal active component and a carrier loading the metal active component. The metal active component comprises WO3 and NiO, the structure of the carrier comprises MgO and a pore channel-containing metal oxide matrix, and the MgO is uniformly dispersed in the pore channel-containing metal oxide matrix, and at least most of MgO is uniformly dispersed on the pore passage surface of the pore passage-containing metal oxide matrix. The hydrotreating catalyst has high desulfurization and denitrification activity and coking resistance, and is especially suitable for the hydrofining process of light distillate oil and middle distillate oil with the purposes of hydrodesulfurization, hydrodenitrification and olefin saturation. The invention also discloses a preparation method and application of the hydrotreating catalyst.

The invention relates to the technical field of biomass particles, and discloses a granulator for producing biomass particles and with a worker protection function. The granulator comprises a bottom plate, the right side of the top of the bottom plate is movably connected with a protective cover through a hinge, and the top of the bottom plate is fixedly connected with a granulator body. The granulator body is located inside the protective cover, and a positioning box is fixedly connected to the bottom of the left side of the protective cover. By means of matched use of the positioning box, arotating disc, a rotating rod, a first helical gear, a first bearing, a rotating shaft, a second helical gear, a disk, a transmission column, a transmission frame, a sliding sleeve, a polished rod, amoving rod and a clamping block, the problem that the existing granulator for producing the biomass particles cannot protect workers. The granulator for producing biomass particles and with the workerprotection function has the advantage of protecting the workers. The workers will not be eroded by harmful substances produced by the granulator during long-term work. The granulator protects the health of the workers, thereby improving the practicability.

The invention relates to a soft sleeve air-blowing optical cable. The cable comprises a cable core and an outer sheath wrapping the cable core, wherein the cable core is a layer-stranded cable core and comprises a central reinforcer and a loose tube stranded at the periphery of the central reinforcer, an optical communication unit is sleeved in the loose tube, the optical cable is characterized inthat the loose tube is made of a flexible plastic material, the elastic modulus of the flexible plastic material is 100-700MPa, and the outermost layer is an outer sheath. The optical cable is simplein structure, small in diameter, light in weight, high in optical fiber density and good in air-blowing laying performance; the loose tube is made of the flexible sleeve plastic material, is good inflexibility, is easy to bend, cannot be bent, can achieve the small-bending-radius coiling in the connector box, enables the optical fiber coiled in a divergence mode to be better protected, does notneed to break the optical fiber, greatly facilitates branching and connection of an optical cable, and improves construction efficiency.

The invention relates to an elastic anti-collision-damage inverter power supply, which comprises an anti-collision shell, a top cover is arranged at the top of the anti-collision shell, rubber pads are fixed at the outer sides of the anti-collision shell and the top cover, a mounting seat is arranged at the inner side of the anti-collision shell, first springs are fixed at the four corners of the bottom of the mounting seat, the bottoms of the first springs are fixedly connected with the bottom of the inner side of the anti-collision shell, clamping plates are symmetrically and slidably connected to the two sides of the top of the mounting seat, and an inverter power source is arranged between the clamping plates. According to the elastic anti-collision-damage inverter power supply, the inverter power supply is installed in the anti-collision shell, the anti-collision shell is used for protecting the inverter power supply, and when the anti-collision shell is collided, the anti-collision shell is damped through a rubber pad, so that the anti-collision shell has elasticity, and the inverter power supply can be better protected; and therefore, the inverter power supply has an elastic anti-collision function and is prevented from being damaged.

The invention provides a data-driven integrated circuit, including a data driving unit and a temperature protection unit. The temperature protection unit includes a temperature sensor assembly, a switching unit and a control chip. The input terminal of the switching unit is connected with a data signal, the output terminal of the switching unit is connected with the input terminal of the data driving unit. The temperature sensor assembly is configured to separately detect temperature values of respective components of the data driving unit and upload the temperature values to the control chip,which is configured to control the switching unit to turn off when the temperature value is greater than a threshold value. The temperature sensor assembly is configured to control the switching unitto turn off when the temperature value is greater than a threshold value.

The invention provides a single-phase box type transformer. The single-phase box type transformer comprises a box body, a transformer, a backup protection fuse used for transformer short-circuit protection, a plugging and unplugging fuse used for transformer overload protection, a single-phase looped network load switch used for conversion of terminal power supply and looped network power supply, two groups of single-way bushings used for transformer high-voltage wire connection and three groups of low-voltage bushings used for transformer low-voltage wire connection. The transformer is connected in series with the plugging and unplugging fuse through a high-voltage tapping switch; the plugging and unplugging fuse is connected in series with the backup protection fuse; the backup protection fuse is connected in series with the single-phase looped network load switch; and the single-phase looped network load switch is respectively connected with the two groups of single-way bushings. Compared with a pole-mounting type single-phase transformer, the single-phase box type transformer enhances self-protection of a power supply circuit and the transformer and further improves the power supply quality. The single-phase box type transformer can be used for terminal power supply and looped network power supply, is very convenient in conversion, and guarantees reliability and flexibility of power supply.

The invention discloses sports close-fitting trousers with a knee supporting function, belongs to the field of sports pants, and provides the sports close-fitting trousers with the knee supporting function. Through the arrangement of air separation supporting stickers and overflow nets, when knees are stressed, firstly, certain air transfer occurs at the overflow nets, the moving airflow can givea certain gentle massage to the stressed area, reduce the pressure on the knee when the force is applied, and protect the knee from being easily injured; secondly, when the knees are stressed, the airseparation supporting paste is stressed to deform towards one sides of the knees, and the force at the stress points is dispersed outwards along the inner supporting ball net, so that the effect of reducing the local stress at the stress points is achieved, and the knees are prevented from being injured easily; meanwhile, viscous liquid in the liquid transfer support ball overflows from an elastic cotton layer, so that an external support arc plate is supported internally, the liquid transfer support ball is not prone to being integrally flattened when stressed, the knee is better protected,and compared with the prior art, the probability that the knee is injured is remarkably reduced.

The invention discloses a forklift lifting oil cylinder protection device for transportation. The forklift lifting oil cylinder protection device comprises a bottom plate, and a supporting pipe, a lifting oil cylinder body and a first fixing ring are fixedly connected to the upper surface of the bottom plate, an n-shaped portal frame is slidably connected to the inner wall of the supporting pipe,a first inserting groove is formed in the upper surface of the first fixing ring, a first protective cover is inserted into the inner wall of the first inserting groove, a first sleeve is fixedly connected to the inner side wall of the first protective cover, and a first support rod is slidably connected to the inner wall of the first sleeve. According to the forklift lifting oil cylinder protection device for the transportation, by arranging the first protective cover, the first sleeve, the first support rod, the sleeve ring, a first vibration reduction spring, a second protective cover, a second sleeve, a second support rod, an arc-shaped plate and a second vibration reduction spring, impact force generated by impact can be buffered when an object impacts the lifting oil cylinder body, and therefore, the whole device has the effect of protecting the lifting oil cylinder body.