34results about How to "Accurate pressurization" patented technology

The invention discloses a device for measuring actual triaxial creep of a geotechnical engineering test specimen. The device comprises a support structure, and also comprises four confining pressure plates, an upper compression plate and a lower compression plate so as to form a closed cavity for wrapping a test specimen, wherein the confining pressure plates comprise two long confining pressure plates and two short confining pressure plats, the upper compression plate and the lower compression plate are a rectangular top steel plate and a rectangular bottom steel plate, the two outwards-bent L-shaped long confining pressure plates are overlapped on two adjacent side surfaces of the bottom steel plate, the two outwards-bent L-shaped short confining pressure plates are overlapped on the other two side surfaces of the bottom steel plate, the bottom ends of the short of the bottom steel plate plates are arranged on the bottom steel plate, the top steel plate is overlapped at the top ends of the long confining pressure plates, the top steel plate is clung to the inner side surfaces of the two short confining pressure plates, pressure sensors corresponding to the four confining pressure plates and the upper compression plate and the lower compression plate are vertically arranged inside the support structure, and grating rulers are arranged on the pressure sensors. The invention also provides a method for measuring the actual triaxial creep of the geotechnical engineering test specimen by using the device.

A floating disc suspension polishing device comprises a polishing base disc and a floating disc, wherein wedge grooves and processing stations for placing workpieces to be processed are formed and arranged on the surface, opposite to the floating disc, of the polishing base disc in the circumferential direction; the wedge grooves are filled with polishing solutions; the wedge grooves and the processing stations are arranged at intervals; the polishing device further comprises a spring, a force sensor, a lifting platform and a master driver; the polishing base disc and the master driver are connected and can rotate around a spindle; the polishing base disc is positioned on the floating disc; the floating disc is connected with the upper end of the spring; the lower end of the spring is connected with the force sensor; and the force sensor is fixedly connected with the lifting platform. The floating disc suspension polishing device presses precisely, grinds stably, and is small in surface damage and high in quality.

An implantable penile prosthesis having an inflatable cylinder with at least one piezoelectric pump for transferring fluid between an integrated reservoir and pressure chamber within the inflatable cylinder. The piezoelectric pump includes an actuator powered by an inductor coil integrated into the inflatable cylinder allowing for wireless control of the inflation and deflation of the inflatable cylinder. An external control system having a corresponding inductive coil can be used to supply a magnetic field for creating a current in the inductor coil integrated into the inflatable cylinder.

The invention discloses a rock-soil mass direct-shear test apparatus capable of quickly and accurately compressing. The rock-soil mass direct-shear test apparatus comprises a platform and a default sliding rail arranged in the middle of the platform, wherein the default sliding rail comprises a long side; a lower shear box is arranged at the upper part of the default sliding rail; the lower shear box slides along the long side of the default sliding rail; an upper shear box is arranged at the upper part of the lower shear box; a rigid transfer rod is arranged in the normal direction of the upper shear box; the rigid transfer rod is fixedly connected with a normal compression system; the normal compression system transfers default stress generated by the normal compression system to the normal direction of the upper shear box through the rigid transfer rod; one side of the lower shear box is connected with a tangential compression system; the other side of the lower shear box is connected with a displacement measurement system and a pull pressure measurement system. The rock-soil mass direct-shear test apparatus can quickly and accurately compress, the direct-shear test efficiency and accuracy are improved and the rock-soil mass direct-shear test apparatus is suitable for research on various rock-soil mass shear properties.

The invention provides a crimping structure with the series connection of thyristors of multiple stages. An external frame of the crimping structure is formed by two insulating pull rings and a left yoke and a right yoke connected to the two insulating pull rings. A silicon stack unit is formed by the series connection of multiple heat radiators and multiple thyristors alternately. The silicon stack unit is installed between the left yoke and the right yoke through a pressure unit arranged at one end. The insulating pull rings can provide pressing force with a larger range than that of an existing tensioning device, the good contact between the thyristors and the heat radiators is ensured, thus the thyristors get good heat dissipation effect and through-flow effect, the press mounting requirements of thyristors with larger sizes and more stages can be satisfied. The crimping structure of the present invention has the advantages of compactness, a small number of components, simple assembly and convenient maintenance.

The invention relates to a diffusion bonding preparation method of a titanium alloy hollow structure, which comprises the following steps: machining of titanium alloy prefabricated blanks: machining two titanium alloy prefabricated blanks which are oppositely combined into a hollow structure; coating for the first time: coating the two oppositely combined titanium alloy prefabricated blanks with ablock type high-temperature alloy coating mold; coating for the second time: coating the block type high-temperature alloy coating mold with a low-carbon steel jacket, and then sequentially carryingout edge sealing welding, baking and vacuum packaging on the low-carbon steel jacket; diffusion bonding: placing the low-carbon steel jacket into a gas diffusion furnace, and conducting diffusion bonding on the two titanium alloy prefabricated blanks; and finished product machining: taking out the titanium alloy prefabricated blanks obtained after diffusion bonding, and machining a finished workpiece of a hollow structure.

The present invention provides a sealing device having a structure in which a pressed area and a heat application area are increased by means of a pair of sealing blocks and a pressing part extendingfrom the sealing block. The sealing device according to the present invention can apply heat and pressure to a part to be sealed or an insulating film which is stretched when the part to be sealed ispressed on the basis of the above structure, to thereby be able to firmly bond an electrode lead and the part to be sealed adjacent thereto.

The invention discloses a device for measuring actual triaxial creep of a geotechnical engineering test specimen. The device comprises a support structure, and also comprises four confining pressure plates, an upper compression plate and a lower compression plate so as to form a closed cavity for wrapping a test specimen, wherein the confining pressure plates comprise two long confining pressure plates and two short confining pressure plats, the upper compression plate and the lower compression plate are a rectangular top steel plate and a rectangular bottom steel plate, the two outwards-bent L-shaped long confining pressure plates are overlapped on two adjacent side surfaces of the bottom steel plate, the two outwards-bent L-shaped short confining pressure plates are overlapped on the other two side surfaces of the bottom steel plate, the bottom ends of the short of the bottom steel plate plates are arranged on the bottom steel plate, the top steel plate is overlapped at the top ends of the long confining pressure plates, the top steel plate is clung to the inner side surfaces of the two short confining pressure plates, pressure sensors corresponding to the four confining pressure plates and the upper compression plate and the lower compression plate are vertically arranged inside the support structure, and grating rulers are arranged on the pressure sensors. The invention also provides a method for measuring the actual triaxial creep of the geotechnical engineering test specimen by using the device.

The invention discloses a miniature air pump and a one-way valve for the same. The one-way valve is formed by assembling a cavity seal, an elastic arm, a metal gasket and a sealing ring together, wherein the elastic arm extends inwards from the cavity seal and is connected with the upper end of the metal gasket, and the sealing ring is fixed at the bottom end of the metal gasket. The one-way valve of the invention can be applied to the one-way sealing of gas up to 20 MPa, has the advantages of small space occupation, corrosion resistance, easy mounting, and the like, simplifies the one-way valve structure of the air pump and is suitable for modern manufacturing.

The invention relates to the technical field of medical supplies, and discloses a disposable balloon dilatation pressure pump. The disposable balloon dilatation pressure pump comprises a barrel; the top end of the barrel is fixedly sleeved with a connecting tube; a piston is arranged in the barrel; a threaded rod is installed at the bottom of the piston; and the other end of the threaded rod penetrates through and extends to the lower portion of the barrel. According to the invention, the barrel taken up and placed in a proper position, then a first bandage and a second bandage are held by the hands and tensioned towards the back face of the arm of a patient at the same time, the first bandage and the second bandage draw close to each other after being tensioned to a certain degree, and the pump can be fixed, so that the burden of a medical staff during operation is relieved, and the practicability is high; and meanwhile, a crank is held by the hand to rotate, the crank can drive a rotating disc to rotate when rotating, the rotating disc can drive the threaded rod to move upwards through cooperation of a U-shaped plate and teeth when rotating, and a balloon can be accurately pressurized, so that the working efficiency of the staff is improved.

A long-distance power transmission system capable of preventing self losses comprises a power transmission line, a voltmeter, a single-chip microcomputer and a voltage compensation unit. The voltmeteris connected to the output end of the power transmission line, and the output end of the voltmeter is connected with the input end of the single-chip microcomputer; the single-chip microcomputer comprises an output port N1, the N1 is connected with the input end of the voltage compensation unit, and the output end of the voltage compensation unit is connected with the power transmission line. Theoutput voltage on the power transmission line is measured through the voltmeter, voltage data is output to the single-chip microcomputer, the voltage losses are obtained through analysis of the single-chip microcomputer, the single-chip microcomputer directly outputs a control signal from the N1, the control signal controls the compensation unit to compensate the voltage, and the problems that the self losses are generated in the power transmission process due to long-distance power transmission, and the output voltage becomes small and unstable due to the self losses are solved.

The invention discloses a method for assembling axial thermal protection components on an aircraft. The method comprises the following steps that a face cabin body profile face is swept before the thermal protection components are mounted, the assembling order and relationship of the thermal protection components are determined, the aircraft is assembled on an overturning tool, a limiting block isdesigned according to the theoretical gap between the two adjacent thermal protection components, and the thermal protection components are mounted sequentially according to the assembling order. Themethod for assembling the axial thermal protection components on the aircraft realizes the accurate positioning and bonding links of the thermal protection components, achieving of the precise assembling method of a thermal protection structure is ensured, precision of the protection position is achieved, validating is conducted through a process scheme, and the operability is high.

The invention discloses a voltage stabilizing system for long-distance power transmission, which includes a power transmission line, a voltmeter, a single-chip microcomputer and a voltage compensation unit. The single-chip microcomputer includes an output port N1 and an output port N2, the N1 is connected to the input end of the voltage compensation unit, the output end of the transformer outputs the voltage, and the N2 directly outputs the voltage, and the present invention measures the output voltage on the power transmission line by a voltmeter, Output this voltage data to the single-chip microcomputer, and after the analysis of the single-chip microcomputer, it is known whether the voltage meets the requirements. If it meets the requirements, the single-chip computer outputs the voltage directly from N2. If it does not meet the requirements, it is output from N1 to the voltage compensation unit for compensation to the required voltage. Output, to solve the problem that the traditional long-distance output voltage is directly obtained from the power transmission line, and the obtained voltage is the voltage after loss, resulting in an unstable voltage at the end.

The invention relates to the technical field of medical equipment, and discloses a novel PICC insertion puncture point hemostasis device. The novel PICC insertion puncture point hemostasis device includes a bandage, a pressure regulating base and a pressure plate, wherein a double-sided adhesive tape is adhered to the inner side of the right end of the bandage, the vertical pressure regulating base of a rectangular structure is installed at the upper right part of the bandage, and the left side and right side of the pressure regulating base are connected and fixed to the upper surface of the bandage through two sets of connecting plates of a right triangle shape; an internal thread groove is formed in the pressure regulating base, the internal thread groove is connected with a vertical threaded rod through threads, and a circular pressure plate is fixedly installed at the bottom of the threaded rod, and a lifting rod with an internal cavity structure is fixedly connected to the top ofthe threaded rod. The novel PICC insertion puncture point hemostasis device has the advantages of fast adjustment, stability, accuracy, low cost and easy popularization and application.

A gear pump is provided with: a casing including a suction port configured to suck fluid, and a discharge port configured to expel the pressurized fluid; a gear including a wheel portion with gear teeth and an axially elongated shaft portion, the gear being so housed in the casing as to transport the fluid from the suction port to the discharge port; and a floating bearing rotatably supporting the shaft portion and being movable axially, the floating bearing including a sealing face in contact with the wheel portion, a receiver face axially opposed to the sealing face; and a communication path having an opening on the sealing face and communicating the opening with a third pressurization chamber defined by a third receiver face of the receiver face and the casing.

The present invention belongs to the field of medical apparatus and instruments, in particular it relates to a pressor for auricular cystis. Said pressor is formed from front pressure plate and back pressure plate, the tail portions of said front and back pressure plates are made into groove form respectively, the tail portion of front pressure plate is inserted into the tail portion of the back pressure plate, and they are connected into one body by means of bolt. Said invention is simple in structure, can be used for accurately pressurizing the cystis and said pressure can be regulated.

The invention provides a crimping structure with the series connection of thyristors of multiple stages. An external frame of the crimping structure is formed by two insulating pull rings and a left yoke and a right yoke connected to the two insulating pull rings. A silicon stack unit is formed by the series connection of multiple heat radiators and multiple thyristors alternately. The silicon stack unit is installed between the left yoke and the right yoke through a pressure unit arranged at one end. The insulating pull rings can provide pressing force with a larger range than that of an existing tensioning device, the good contact between the thyristors and the heat radiators is ensured, thus the thyristors get good heat dissipation effect and through-flow effect, the press mounting requirements of thyristors with larger sizes and more stages can be satisfied. The crimping structure of the present invention has the advantages of compactness, a small number of components, simple assembly and convenient maintenance.

The invention discloses a pre-stressed anchor cable installation test system and method. The system comprises an anchor cable dynamometer, a signal collection instrument, an electric hydraulic pump, ahydraulic jack, and a PC terminal. The PC terminal is in communication connection with the electric hydraulic pump; the electric hydraulic pump is connected with the hydraulic jack; the PC terminal is used for receiving configured pressurization parameters to control the electric hydraulic pump to apply hydraulic pressure to the hydraulic jack, and the hydraulic jack is used for pressurizing thepre-stressed anchor cable; the anchor cable dynamometer is connected with the signal collection instrument; the signal collection instrument is in communication connection with the PC terminal; the anchor cable dynamometer is used for sensing the stress change of the pre-stressed anchor cable to generate a vibrating wire signal; the PC terminal is used for configuring the acquisition frequency ofthe signal collection instrument; the signal collection instrument is used for collecting and processing the vibrating wire signal according to the collection frequency configured by the PC terminal,and transmitting the processed vibrating wire signal to the PC terminal; and the PC terminal is also used for receiving the processed vibrating wire signal for storage, calculation and analysis to obtain and display stress data sensed by the anchor cable dynamometer.

The invention discloses a dual-motor pressure generating system of a weight loading mechanism, which comprises a piston cylinder (61) for generating pressure and a piston (60), and is characterized inthat the piston (60) is connected with a screw rod (57) and a screw rod sleeve (56); the screw sleeve is connected with a first servo motor (51); by means of a second servo motor and a first servo motor which are additionally arranged and connected with a transmission mechanism, control over a pumping executing mechanism of the preloading pump, an opening and closing action mechanism of the pressure release valve and an opening and closing action mechanism of the increasing valve is achieved. Specifically, the pressure output end of the piston cylinder is connected with a gauge connecting seat (77) of a pressure gauge (78) and a pressure release valve (74) in parallel. A pressure cavity in the rear portion of the pressure output end of the piston cylinder is connected with the output endof an increasing valve (73), and the oil supply end of the increasing valve is connected with an oil outlet of a pre-pressing pump (70). An oil inlet of the pre-pressing pump is connected with an oilcup (75). The two servo motors are adopted for controlling the pre-pressing pump and the pressure regulator to be matched to achieve pressure generation, the pre-pressing pump is used for conducting rapid pressurization in the initial stage of pressurization, the pressure regulator is adopted for conducting accurate pressurization after the pressure reaches a certain degree, and full-automatic, rapid and accurate pressure generation of the pressure is achieved.

The invention provides an intragastric calculus compression bag, and belongs to the technical field of medical equipment. The intragastric calculus compression bag comprises a compression bag body, pressurization bags, pressurization tubes, pressurization valves and a traction strap. The compression bag body is made of a paper-thin flexible cloth material, after the compression bag body is compressed, the size of the compression bag body is decreased, the compression bag body is soft, and when the compression bag body is put into the stomach, operation is convenient; the compression bag body is large in size and capable of containing larger calculi after being unfolded. The compression bag body is of a two-layer structure, an enclosed cavity is formed, and objects contained in the pressurization bags can be deformed after pressurization is conducted. An inner crinkle cloth layer protrudes inwards after pressurization, so that the calculi form cylinders with the diameter of nearly 1 cm and can be smoothly taken out through the esophagus. All enclosed units are pressurization units and are coated with different colors, and therefore pressurization parts can be determined for accurate pressurization. The portions, outside the pressurization bags, of the pressurization tubes are connected into a whole from an opening of the compression bag body, parallelly arranged to the position 60 cm away from the opening of the compression bag body and shaped like a strap and can be attached to a gastroscope body, the occupied volume is the minimum through the mouth pharynx and the esophagus, and mucosal tissue damage can be avoided. By means of the traction strap, the calculi can be taken out more conveniently and rapidly.

An anti-collision suspended polishing device comprises a machine base, a suspended basic disc, a grinding disc and a correction ring. The suspended basic disc is connected with a pressurizing assembly, the suspended basic disc is clamped in the corrosion ring which is installed on the grinding disc, the grinding disc rotates around a fixed center axis through a main driver, wedge-shaped grooves and positioning work positions for placing workpiece to be processed are formed in corresponding surfaces of the suspended basic disc and the grinding disc along the circumferential direction, polishing liquid is full of the wedge-shaped grooves, and the wedge-shaped grooves and the processing work positions are arranged at intervals. The polishing device further comprises a first permanent magnet ring and a second permanent magnet ring, the first permanent magnet ring is sleeved on the outer side of the suspended basic disc, the second permanent magnet ring is sleeved on the inner surface of the connection ring, a gap is reserved between the first permanent magnet ring and the second permanent ring, and the magnetism of an outer ring of the first permanent magnet ring is the same as that of an inner ring of the second permanent magnet ring. The anti-collision polishing device is stable to grind, small in surface damage and high in quality.

The invention discloses a vibrator pressurizing equipment working system which comprises a vibrator tightening implementation mechanism for pressurizing a vibrator screw, a vibrator chuck for stably clamping a vibrator of a screw to be installed, a reverse charge feedback type screw tightening force detection unit for detecting a reverse charge produced by vibrator pressurizing and calculating a vibrator screw tightening force according to the magnitude of the reverse charge, and a control system for controlling the vibrator tightening implementation mechanism to accurately pressurize according to the detected vibrator screw tightening force. The invention further introduces a processing method of the vibrator pressurizing equipment working system. The processing method of the vibrator pressurizing equipment working system comprises the following steps of S1, controlling parameter setting of vibrator pressurizing in the system; S2, automatically controlling loading and chuck opening and closing; S3, automatically controlling vibrator screw pressurizing, meanwhile, carrying out charge collection and detection as well as pressure analysis and evaluation by following the charge, and adjusting and checking in time so as to conform to the preset requirement range; and S4, after various items conform to the requirement, automatically controlling unloading and chuck opening and closing, and picking materials.

A ball screw device includes a screw shaft body, a ball nut, a housing, a bearing, an annular first biasing member and an annular second biasing member, and an annular first holding member and an annular second holding member. The housing includes a cylindrical first housing and a cylindrical second housing that are coupled to each other in a surface-contact state. The first housing includes a bearing holding portion that holds the bearing slidably in the axial direction. The second housing includes a pressing portion that protrudes radially inward. At least one of the first holding member and the second holding member generates a gap between the first housing and the second housing when the bearing, the first biasing member, the second biasing member, the first holding member, and the second holding member are wrongly mounted to one another.