43results about How to "Avoid excessive pressure" patented technology

A method and device for converting rotary motion to reciprocating percussion motion. The device comprises a machine body (4), a travel portion (7), and a reciprocating percussion portion (5). The reciprocating percussion portion (5) comprises a percussion drive mechanism (2), a rocker arm (6), and a percussion head (1). The percussion drive mechanism (2) comprises a percussion power source member (11), a transmission component, and a crankshaft (10). The percussion power source member (11) comprises a motor, and the motor comprises a power output shaft (14). The transmission component comprises a power gear (13) and a transmission gear (12). The power gear (13) is mounted on the power output shaft (14). The transmission gear (12) drives the crankshaft (10). The transmission component comprises a transmission shaft. The power output shaft (14) is perpendicular to the rocker arm (6), and is parallel to the transmission shaft and the crankshaft (10) so that the transmission gear (12) drives the crankshaft (10) to convert rotary motion to reciprocating motion; or the power output shaft (14) is parallel to the rocker arm (6), the crankshaft (10) is driven to convert rotary motion to reciprocating motion after the power direction is changed by a power bevel gear and a transmission bevel gear. The crankshaft (10) drives the percussion head (1) to perform reciprocating percussion. The travel portion (7) drives the machine body to travel. The machine body (4) drives the reciprocating percussion portion (5) to move and work continuously. The device applies to the mining field or mechanical engineering field, and has advantages such as strong structural strength and a small amount of maintenance.

The invention relates to the field of machinery, in particular to a piston rolling friction or suspension friction method and an anti-abrasion piston device implementing the method. The anti-abrasion piston device comprises a piston, friction bodies, a cylinder body and a friction body supporting piece, wherein the friction bodies comprise rolling bodies and / or suspension bodies; the friction body supporting piece and the cylinder body are split, or connected in a splitting manner, or integrated, or the friction body supporting piece and the piston are split, or connected in a splitting manner, or integrated; the piston and the friction bodies are arranged in the cylinder body; and the friction bodies support the piston and the cylinder body to make rolling friction or suspension friction reciprocating motion. The original structure of sliding friction between the piston and the cylinder body is changed by equipment, and the sliding friction is changed into rolling friction or suspension friction, so that the anti-abrasion piston device is simple in structure, high in strength, high in space utilization efficiency, reliable in performance, high in manufacturability, ease to process and manufacture, and long in service life.

A computer case retention structure includes a cover and a base. The base has a bottom plate and a guided way with a protruding hook. The cover has at least one side plate, a first and second elastic blades are disposed on the side plate. A protrusion is extended downward from a tip of the second elastic blade to slide against the guided way. For fixing the cover onto the base, the protrusion slides over the protruding hook and then stopped by the protruding hook, so that the cover is fixed onto the base without being moved relative to the base. For removing the cover, a release element disposed on the first elastic blade is pressed to bend the first and second elastic blades, separating the protrusion from the guided way. Then the cover can be removed from the base without the protrusion being stopped.

The invention provides a battery management device, a battery management method and a circuit applying the device. The battery management device comprises an analog-digital converter, a microcontroller, a voltage regulator and a control circuit. The analog-digital converter is connected with a plurality of batteries and used for performing analog-digital conversion on single battery voltage. The microcontroller is connected with the analog-digital converter and used for receiving and processing the single battery voltage output by the analog-digital converter. The voltage regulator is connected with a power supply, the analog-digital converter and the microcontroller and used for providing operation voltage for the analog-digital converter and the microcontroller. The control circuit is connected with the power supply and the voltage regulator and used for receiving control signals to control the voltage regulator to output operation voltage. The battery management device can be in a power-off mode, the cost is low, the power consumption is low, and the reliability is high.

The invention discloses a tilting type electric heating stockpot comprising a fixed base. A left box body is mounted at one end of the top surface of the fixed base; a right box body is mounted at theother end of the top surface of the fixed base; and supporting legs are mounted at four corners of the bottom end of the fixed base. An electric heating stockpot is arranged between the left box bodyand the right box body; a left supporting rotating shaft is welded to the middle of one side of the outer surface of the electric heating stockpot. A driven cam is welded at one end of the left supporting rotating shaft. A right supporting rotating shaft is welded in the middle of the other side of the outer surface of the electric heating stockpot; and a fixing groove is formed in the middle ofthe inner wall of the left box body. The left supporting rotating shaft, the driven cam, the rotating shaft groove, the right supporting rotating shaft, a supporting groove, a mounting groove, the fixing groove, a fixing clamping groove, a stepping motor and a driving cam are arranged, the electric heating stockpot can be turned over by starting the stepping motor, so that the discharging difficulty of cooked food materials is reduced, and use of the electric heating stockpot is facilitated.

Disclosed is a device for picking up materials, which comprises: a sliding body placed between a base and a base stop, a bottom base placed on the bottom of the base, plural suction placed on the bottom of the bottom base; the base stop and the bottom base are connected with plural main axes which go through the base body with sliding mode; the sliding system can shift downward under the press of a driver, meanwhile, the base stop can move downward with the bottom base via gravity; when the suction is attached under the material, the bottom base won't continuously move down with the sliding body; also, an elastic component is provided on the sliding body for providing recovery elastic force when the slide body without being pressed by the driver and preventing material damage by over pressed.

The present invention discloses a check valve for vapor recovery. The check valve comprises a valve body, a first coupling end, a second coupling end, a valve disc, a valve seat, and a valve cover. The first coupling end is formed on one side of the valve body, and the second coupling end is formed on the other side of the valve body. The valve disc is fixedly arranged within the valve body in a position where a first passage and a second passage communicate with each other. The valve seat is formed on one side of the valve body in a position parallel to the valve disc. A valve rod is nested in an opening of the valve seat. A baffle plate is fixedly arranged at one end of the valve rod, and a limiting plate is fixedly arranged at the other end of the valve rod. An outer side of the valve seat is fixedly connected with the valve cover through a bolt, and a spring is fixedly arranged in the middle of an inner side of the valve cover. With the spring arranged between the limiting plate ofthe valve rod and the valve cover, the impact force on the baffle plate after being impacted by airflow can be buffered by the spring, thereby preventing the impacted valve rod from deformation. In short, the check valve for vapor recovery is simple and practical.

The invention provides a cement-based material alkali aggregate reaction measuring device and a measuring method. The device comprises a constant-temperature box, a temperature control device used for adjusting the temperature of liquid is arranged in the box body, and a limiting groove is engraved in a bottom plate on the lower portion of the box body; a limiting plate parallel to the bottom plate is arranged at the upper half part of the hollow cavity, and a first limiting hole is formed in the limiting plate in a penetrating manner; a heat preservation cover plate is arranged on the top of the box body and is parallel to the bottom plate, a second limiting hole is formed in the heat preservation cover plate in a penetrating mode, and a displacement meter is arranged over the first limiting hole; and the device further comprises an upper measuring nail and a lower measuring nail which are fixed to the two ends of a mortar rod. When the device works, displacement data of the upper measuring nail is measured through the displacement meter, so that the length change value of the mortar rod is obtained, and the expansion rate of the mortar rod is obtained based on the length change value. The device is simple in design and convenient to operate, the method is clear, and the change of the expansion rate of the cement mortar test piece under the alkali aggregate reaction condition can be monitored in real time.

The invention discloses a combined take-off and landing device for a hypersonic vehicle wheel-ski, which comprises a main buffer outer sleeve (1), a main buffer piston rod (2), wheels, a buffer actuating module and a ski assembly; the buffering actuating module is arranged on the main buffer piston rod (2) at the side surface of the wheels; the buffer actuating module comprises an air cavity (8),an oil cavity (9) and a floating piston (16) which are coaxially arranged; the air cavity (8) is vertically fixed below a buffer actuating module bracket (7), the oil cavity (9) is arranged outside the air cavity (8), and a spring (18) is arranged between the air cavity and the oil cavity; the floating piston (16) is arranged in the air cavity (8) ; a hydraulic sensor (12) for detecting the pressure in the oil cavity (9) in real time is arranged at the lower end of the oil cavity (9) and feeds back to an airplane main control system. The device has the advantages of small size and light weight, and can be applied to a hypersonic vehicle with strict limitation requirements on the size and performance of the take-off and landing device.

A carbon buildup removal device with protection function of vibration detection is provided for electrically connecting to an engine from which carbon buildup is to be removed. The carbon buildup removal device includes a gas output unit and a vibration detection unit. The gas output unit outputs a gas that is supplied to the engine. The vibration detection unit includes a vibration detector that detects vibration of the automobile and a controller that is electrically connected to the vibration detector and the gas output unit. By using the vibration detector in combination with the controller, when the engine stops operating or is operating abnormally, power supplied to the gas output unit is cut off so as to prevent excessive accumulation of gas and thus back fire or excessive pressure to thereby improve stability and safety of carbon buildup removal operation of the engine.

The underlying invention is directed to devices for collecting objects, such as fruits, from the ground. In particular, an object collector grid protector (11) is provided, which is configured for use with a collector grid basket (8) of an object collector device. A corresponding basket (8) comprises an object penetrable grid comprising a plurality of mutually spaced resilient grid bars (9) supported by and extending off a basket base (10). The object collector grid protector (11) comprises at least one annular protector shell (13) with a predefined lateral width (W) overlapping, when properly applied to the grid basket (8), with a predefined grid basket section located adjacent to the basket base (10), to thereby disable in the overlapping region a passage of objects into the grid basket (8).

The invention discloses an oil bottle mouth capable of preventing oil leakage during pouring. The oil bottle mouth capable of preventing oil leakage during pouring comprises a bottle mouth top cap (1), a preposed telescopic adapter pipe (2), a postposed telescopic adapter pipe (3), a tension spring (4), a bottle mouth base (5) and a spring buckle (6), wherein the tail end of the preposed telescopic adapter pipe (2) is tightly connected with the head end of the postposed telescopic adapter pipe (3) in a sleeving manner; the tail end of the postposed telescopic adapter pipe (3) is tightly connected with the top of the bottle mouth base (5) in a sleeving manner; a gas and liquid reflowing hole (5-3) is formed in the top of the bottle mouth base (5). The bottle mouth provided by the invention is used as a bottle mouth of an edible oil bottle; when oil is poured out, the oil can be poured out steadily, so that a pheromone that the oil rushes out and leaks out onto the outer wall of the bottle under the influence of an airflow in the bottle is avoided; meanwhile, after the oil is poured out, the oil left on the bottle mouth can reflow into the oil bottle through the bottle mouth, so that waste of the oil is reduced.

The invention discloses a quasi-constant voltage drop self-stop write-in method of a resistive memory unit. The method comprises the following steps of: establishing a write voltage and a write current flowing through the resistive memory unit; copying the write current to generate a copied write current; enabling the copy write-in current to flow through a simulation circuit to generate a simulation write-in voltage; adding the simulation write-in voltage to the reference voltage in a micro-amplitude manner along with the write-in time so as to generate a write-in reference voltage; and adjusting the write-in voltage and the write-in current according to the write-in reference voltage, so that the cross voltage at the two ends of the resistive memory unit is kept fixed or slightly increased during the write-in period. When the copy write-in current reaches a preset target current value, a stop signal is sent out; and the related write circuit is closed by the stop signal so as to optimize the write period of the resistive memory unit.

The invention discloses a linear electromagnetic driving plunger pump, belongs to volumetric fluid conveying pumps and is applicable to pressure pumping, pressure accumulation, pressure stabilization and overflow protection of the fuel of an electronic fuel injection system of an internal combustion engine. The linear electromagnetic driving plunger pump comprises a pump body, an upper cover, a lower cover, an electromagnetic coil, an armature, a return spring, an inlet joint, an outlet joint, a sleeve, a valve core, a supporting pipe, a diaphragm, a nut, an overflow port joint, a plunger rod and a leakage flow port joint. Under the action of electromagnetic force and spring force, the plunger rod reciprocates, gasoline pumping is realized, the total pressure of a pressure accumulating cavity is low in fluctuation, the linear electromagnetic driving plunger pump has pressure accumulation, pressure stabilization and overflow functions, accurate control can be realized, and an operating period of an electromagnet can be shortened, so the reliability is improved. The linear electromagnetic driving plunger pump which serves as an oil sprayer is applicable to an internal combustion engine system, and great significance is provided for realization of accurate and reliable oil spraying control over the internal combustion engine.

The invention discloses a firing furnace for ceramic manufacturing. The firing furnace comprises a furnace body, wherein the bottom end of the furnace body is fixedly provided with a power box; the two sides of the furnace body are fixedly provided with heating boxes; a motor is fixedly arranged inside the power box; the output end of the motor passes through a furnace wall at the bottom end of the furnace body, and is fixedly provided with a rotary shaft; a plurality of placing tables are fixedly arranged on the surface of the rotary shaft at equal spacing; a cavity is arranged on the middlepart of the rotary shaft; an electric heating wire is arranged inside the cavity; the cavity wall of the cavity side is provided with a plurality of first through holes; heating rods are fixedly arranged inside the heating boxes; and a pressure relief hole is formed in the top end of the furnace body. According to the firing furnace for ceramic manufacturing disclosed by the invention, the electric heating wire and the heating rods are arranged, so that electric energy can be converted into heat energy; the motor is arranged for driving the placing tables to rotate, so that a ceramic product can be uniformly heated; and the pressure relief hole is formed, so that pressure intensity inside the furnace body is prevented from being excessively great to cause furnace body damages.

A glue producing device includes a raw material feeding apparatus and a glue producing and stirring apparatus. The raw material feeding apparatus includes a material feeding barrel, an outer cover, a fixed connecting board, a material feeding pipeline, a supporting connection bracket and a bearing bottom board. The upper part of the bearing bottom board is welded to the supporting connection bracket. The outer cover is arranged above the material feeding barrel. The lower part of the material feeding barrel is fixedly connected to the material feeding pipeline. The right side of the material feeding pipeline is connected to the glue producing and stirring apparatus through a pipeline. The glue producing and stirring apparatus includes a pressure meter, a reaction kettle, a material outlet, a motor, a stirring rod and stirring blades. The upper part of the reaction kettle is fixedly connected to the motor. The lower part of the motor is rotatably connected to the stirring rod. The pressure meter is disposed on the upper part of the right side of the reaction kettle. The material outlet is fixedly connected to the lower part of the right side of the reaction kettle. The glue producing device is convenient to use, is high-effective and is convenient to maintain, and can be promoted and applied widely.

The invention discloses a self-locking type oil filler cover changer which comprises an installation piece, a seal cover and a drive mechanism. The installation piece is provided with an oil filler through hole, a sliding chute hole and a connecting structure fixedly connected with a fuel tank oil filler port; the oil filler through hole and the sliding chute hole are staggered; an installation part is arranged at one end part of the installation piece; the seal cover is rotatably arranged at one end part of the installation part; the seal cover is provided with a rotator rotatably connected with the installation part and can be arranged on the installation part in an elastically resetting way; the drive mechanism comprises a first connecting rod piece, a second connecting rod piece and aforce applying piece; one end of the first connecting rod piece is fixedly connected with the rotator; the other end of the first connecting rod piece is rotatably connected with one end of the secondconnecting rod piece; the other end of the second connecting rod piece is rotatably connected with one end of the force applying piece; a pressing part is arranged at the other end of the force applying piece; and the force applying piece can be slidably arranged in the sliding chute hole. According to the self-locking type oil filler cover changer, different types of automobile oil covers can bereplaced into the same type of oil covers, so that an automatic oiling technology can be conveniently implemented and popularized.

The invention belongs to the technical field of curtain rods, and discloses a curtain rod with a self-locking function, which comprises a main rod and two auxiliary rods, grooves are formed in the left side and the right side of the main rod, the two auxiliary rods are respectively inserted into the two grooves, and tooth grooves which are arranged at equal intervals are fixedly connected to the inner top walls and the inner bottom walls of the two grooves. A left tooth block and a right tooth block are arranged in each of the two grooves. According to the scheme, when the length of the curtain rod is adjusted, the pressing assembly is pressed, the pressing rod is driven to move into the groove, then the abutting assembly is driven to move, the tooth block is driven to be separated from the tooth groove, then the auxiliary rod is pushed and pulled according to installation requirements, the length of the curtain rod is adjusted, and after the length of the auxiliary rod is determined,force on the pressing assembly is canceled; the abutting assembly drives the tooth block to reset and be inserted into the tooth groove again, so that self-locking of the auxiliary rod is achieved, secondary change of the length of the curtain rod is prevented, the structure is ingenious, and the operation is easy.

The invention, which belongs to the field of pediatric surgery, discloses a balloon dilatation tube for the pediatric hepatobiliary surgery department. The balloon dilatation tube comprises a catheterbody, a balloon assembly, a catheter reinforcer, a catheter seat, and a perfusion inner tube arranged in the catheter body. The perfusion inner tube penetrates the two ends of the catheter body. Theballoon assembly is installed at one side of the catheter body; one end, away from the balloon assembly, of the catheter body is connected with the catheter seat through the catheter reinforcer. A main channel and an auxiliary channel are respectively arranged on the catheter seat and are provided with second inflation inlets; a first inflation inlet is formed in the end, away from the balloon assembly, of the perfusion inner tube; a medicine injection opening is formed in one side of the first inflation inlet; and the outer end of the medicine injection opening penetrates the exterior of theperfusion inner tube. In addition, the balloon dilatation tube also includes an inflation device. The balloon dilatation tube having the high functionality is capable of reducing the pain and psychological burdens of a patient greatly; medicine treatment can be carried out, liquid medicine enters the body of a patient in a powder mist mode, and the powder adheres to the infection focus position, so that the medicine treatment is realized.

The invention discloses a vacuum furnace with higher safety for producing silicon bars. The vacuum furnace comprises a thermal insulation sleeve, a water-cooled tube, a pressure relief hole and a pressure discharging hole, wherein the thermal insulation sleeve is mounted on a vacuum furnace body, the water-cooled tube is mutually connected with the vacuum furnace body through a fixing component, the pressure relief hole is formed in the right side of the vacuum furnace body and is mutually connected with a fixing base, and a pressure feeding hole is formed in the left end of the fixing base; avalve block is arranged on the inner side of the fixing base, and the right side of the valve block is mutually connected with the sleeve through a connecting transverse rod; and an elastic componentis fixed in the fixing sleeve, a mounting cylinder is mounted outside the connecting transverse rod, and the pressure discharging hole is formed in the fixing base. According to the vacuum furnace with higher safety for producing the silicon bars, the heat loss can be effectively prevented, and the relatively good energy conservation and environment protection effects are achieved; and by utilizing the water-cooled tube, the vacuum furnace can be rapidly cooled and can be decompressed, so that the danger caused by an over-high pressure intensity is prevented, and the use is safer.

A quasi-constant voltage drop self-aborting write method for resistive memory cells. The method includes the following steps: establishing a write voltage and a write current flowing through the resistive memory unit; replicating the write current to generate a replicate write current; making the replicate write current flow through a simulation circuit to generate a simulate write input voltage; the simulated write voltage is added to the reference voltage with a slight increase in proportion to the write time to generate a write reference voltage; and the write voltage and write current are adjusted according to the write reference voltage, resulting in resistance The voltage across the permanent memory cell remains constant or increases slightly during writing. When the replica write current reaches a predetermined target current value, a suspend signal is sent; and the suspend signal closes a related write circuit to optimize the write period of the resistive memory unit.

The invention discloses a ventilation device based on renewable fibers. The device comprises a ventilation pipe, a filter assembly is arranged in the ventilation pipe, a wind wheel is fixedly mounted at the right side in the ventilation pipe, the wind wheel is connected with the filter assembly through an elastic rope, an air inlet pipe is fixed below the ventilation pipe, the filter assembly comprises filter screens, a fan is arranged between the two filter screens, the left side of the fan is connected with a motor through a bearing, the motor is fixedly connected with the filter screen at the left side, the right side of the fan is attached to the filter screen at the right side, a telescopic bin is fixed to the middle of the filter screen at the right side, a spring ball is arranged in the telescopic bin, and a rotating shaft is fixed to the center of the rear side of the wind wheel, a centrifugal ball is connected to the outer side of the rotating shaft through a spring, a flexible film is arranged at the outer side of the centrifugal ball, and an elastic wall is fixed to the outer side of the flexible film. The ventilation device has the advantages of being capable of automatically changing filter modes and automatically changing cleaning modes.

The invention discloses a concrete paving and flattening machine capable of accelerating concrete solidification and used for pavement construction. The concrete paving and flattening machine comprises a paving and flattening machine cross beam, a press roller, an idler wheel, a left baffle and a right baffle. The left baffle is fixedly arranged at the lower left end of the paving and flattening machine cross beam, the right baffle is movably arranged at the lower right end of the paving and flattening machine cross beam, and the left baffle and the right baffle are of rectangular platy structures; the press roller is arranged between the left baffle and the right baffle. Only one cross beam is arranged in the concrete paving and flattening machine, the whole concrete paving and flatteningmachine is small, simple in structure and low in weight, and the manufacturing cost and construction cost are reduced; an electric heating plate is arranged on the paving and flattening machine crossbeam above the press roller and heats the press roller, the press roller transmits heat to concrete when the concrete pavement is flattened, moisture in the concrete can be quickly evaporated, the aim of increasing the drying speed of the concrete pavement is achieved, and the concrete paving and flattening machine is suitable for popularization.

The invention relates to an anti-vibration device and method for machining a diesel engine base rack. The anti-vibration device comprises two pressing plates arranged side by side, wherein the opposite side faces of the two pressing plates are used for pressing a plate to be damped; a shear fork bracket is connected between the two pressing plates; and the shear fork bracket can adjust and fix thedistance between the two pressing plates through shear fork deformation under the condition that it is guaranteed that the two pressing plates are parallel. According to the anti-vibration device, vibration of a middle body and a middle plate can be reduced during machining of the diesel engine base rack, so that the machining quality is improved.

The invention discloses an automatic fruit picking device for agricultural planting, which belongs to the field of agricultural machinery. The device includes: a handle, on which a driving device is arranged; a picker, which includes two catching covers arranged symmetrically, and a rotating handle is arranged on both of the two catching covers; A number of grabbers are arranged on the sides, and the grabber includes a grab block, a number of slide bars, a number of first magnetic blocks and a number of second magnetic blocks. The first magnet block and the second magnet block are in one-to-one correspondence with the receiving holes, one end of the letting slide bar is slidably arranged in the receiving hole, the second magnetic block is fixedly arranged in the receiving hole, and the first magnetic block is fixedly arranged in the receiving hole. The position sliding rod is located at one end in the receiving hole, and the first magnet block and the second magnet block attract each other. The invention can avoid the problem of skin breakage and the problem of different stress caused by the size of the fruit.

The invention discloses a self-locking type oil filler cover changer which comprises an installation piece, a seal cover and a drive mechanism. The installation piece is provided with an oil filler through hole, a sliding chute hole and a connecting structure fixedly connected with a fuel tank oil filler port; the oil filler through hole and the sliding chute hole are staggered; an installation part is arranged at one end part of the installation piece; the seal cover is rotatably arranged at one end part of the installation part; the seal cover is provided with a rotator rotatably connected with the installation part and can be arranged on the installation part in an elastically resetting way; the drive mechanism comprises a first connecting rod piece, a second connecting rod piece and aforce applying piece; one end of the first connecting rod piece is fixedly connected with the rotator; the other end of the first connecting rod piece is rotatably connected with one end of the secondconnecting rod piece; the other end of the second connecting rod piece is rotatably connected with one end of the force applying piece; a pressing part is arranged at the other end of the force applying piece; and the force applying piece can be slidably arranged in the sliding chute hole. According to the self-locking type oil filler cover changer, different types of automobile oil covers can bereplaced into the same type of oil covers, so that an automatic oiling technology can be conveniently implemented and popularized.

The invention discloses a drying and dehumidifying device for cardboard recycling processing. The device comprises a base, and a transverse barrel is rotationally installed above the base; a discharging hole is formed in the closed end face of the transverse barrel, the open end of the transverse barrel is fixedly connected with one end of a first transverse pipe, and the other end of the first transverse pipe is rotationally connected with one end of a second transverse pipe through a sealing bearing; the same transverse shaft is rotationally installed in the first transverse pipe and the second transverse pipe, one end of the transverse shaft is fixedly connected with one end of the conical shaft, a driving motor capable of driving the transverse shaft to rotate is fixedly installed at the closed end of the second transverse pipe, and a driving device capable of driving the first transverse pipe to rotate is fixedly installed on the base. The device is simple in structure and ingenious in conception, drainage is conducted through the spiral through grooves, the drainage holes are continuous and communicated, water drainage is facilitated, the spiral through grooves are more convenient to clean, the drainage holes are convenient to clean, actual requirements can be met, and the device is suitable for popularization.