34results about How to "Avoid multiple disassembly" patented technology

The invention provides a low-frequency cyclic loading test device which comprises a reaction frame, a ground beam and a distribution beam. The reaction frame is used for exerting vertical force on a to-be-tested piece so as to prevent the to-be-tested piece from jumping in the vertical direction; the ground beam is used for fixedly positioning the to-be-tested piece from the bottom of the to-be-tested piece; the distribution beam is arranged at the force output end of the reaction frame and is used for fixedly positioning the to-be-tested piece from the upper portion of the to-be-tested piece; a first horizontal actuator used for exerting horizontal vibration control force on the to-be-tested piece through the ground beam is arranged at the beam end of the ground beam, and / or a second horizontal actuator used for exerting horizontal vibration control force on the to-be-tested piece through the distribution beam is arranged at the beam end of the distribution beam. The situation that the reaction frame is disassembled for multiple times due to different dimensions of to-be-tested pieces is avoided; low-frequency cyclic loading tests and push-pull of the pieces can be completed by assembling the actuator on one side of the device.

The invention, which relates to the technical field of icing wind tunnel pressure measurement, discloses a pressure measuring device for preventing a probe from icing through a rotary rake. The pressure measuring device comprises a pressure measuring rake with a pressure measuring probe. The pressure measuring rake has a hollow paddle-shaped structure with a hollow shaft; and the hollow structureof the pressure measuring rake is communicated with the cavity of the hollow shaft. In addition, the device also incudes a driving positioning device mounted on the outer surface of an air inlet channel; and a rotating shaft of the driving positioning device is in driving connection with the hollow shaft of the pressure measuring rake. According to the invention, when an air inlet channel icing test is carried out, a pressure measuring rake is rotated by the driving positioning device to enable the pressure measuring probe to be against an incoming flow direction with the back and positioningis performed, so that the pressure measuring probe is protected from being iced and the rotating angle of the pressure measuring rake is not influenced by the air flow; when the air inlet channel pressure measurement test is carried out, the pressure measuring probe faces the incoming flow direction directly to measure the pressure and the distribution, so that multi-times mounting and dismountingof the pressure measurement rake and related parts are avoided and thus the damage to the air inlet channel caused by repeated mounting and dismounting is reduced. The working time of the related personnel in a low-temperature environment is shortened and the test efficiency is improved.

The invention relates to a display for railway vehicles. The display includes a display circuit board and a main board, and the main board is connected to the display circuit board through a bus; the display circuit board includes LED row and column drive circuits and 9216 surface-mounted LEDs High-brightness light-emitting diodes, LED row and column drive circuits adopt high-power circuits, which can drive ≤300 LEDs at the same time, and can adjust the brightness of ≤256 levels through the program; the main board includes power circuit boards, communication circuit boards and microprocessor circuit boards Among them, the power supply circuit board converts the DC input into 3.3V power supply for internal circuits, and the DC input range can reach 66V-154V. The microprocessor circuit board adopts ARM microprocessor, and the code includes bootloader and executable program. Online upgrade executable program through bootloader. The invention has the advantages of simple and reasonable structure, wide working voltage range, no damage to the bus due to the protection function, and diverse and reliable communication modes.

The invention discloses a four-shaft adjustable overturning clamp for an engine support bracket and relates to the technical field of clamps. The four-shaft adjustable overturning clamp comprises basesupporting legs. An operation platform is fixedly connected to the position, close to the bottom end, between fixing clamping blocks, and side clamping mechanisms are fixedly connected to the left side and the right side of the middle of the top of the operation platform correspondingly. The middle of the top of the operation platform is fixedly connected with an adjusting pressing mechanism, anda rotary scale is arranged on the surface of a right supporting rotating disc. Fixing inserting grooves are formed in a left supporting rotating disc and the right supporting rotating disc correspondingly. According to the four-shaft adjustable overturning clamp for the engine support bracket, the purposes that the engine support bracket is fixed in a multi-angle mode, it is ensured that in the machining and production processes, the skewing or falling phenomenon does not occur to the engine support bracket, the production and machining safety is improved, the situation that during clamping machining, the engine support bracket is dismantled for multiple times is avoided, the machining and production efficiency is improved, and the labor intensity of workers is lowered are achieved.

The invention discloses a mounting and elevating method for a deep-well pump of a liquefied natural gas storage tank. The mounting and elevating method comprises the following specific steps of firstly, in the mounting process of the deep-well pump, firstly, taking one section of steel wire rope with connectors at two ends, connecting one end of the steel wire rope with a low-pressure pump, and connecting the other end of the steel wire rope with a lifting hook of lifting equipment; secondly, downward placing the lifting hook of the lifting equipment to the upper edge of the pump well, then using a brace rod to insert into a supporting hole which is connected with the steel wire rope and is used for lifting a supporting plate, so that the whole deep-well pump is supported; at the same time, detaching the lifting hook, lengthening a steel wire rope with one connector; performing mounting and downward placing work of next section of deep-well pump by using the lengthened steel wire rope, and finishing the mounting work of the whole deep-well pump according to the cycle, wherein the elevating process of the deep-well pump is opposite to the mounting process of the deep-well pump. According to the mounting and elevating method disclosed by the invention, the process can be finished only by using one steel wire rope, so that detaching, mounting and winding work of the steel wire rope in the mounting and elevating process of the deep-well pump for multiple times can be avoided; in addition, the detaching, mounting and winding time of the steel wire rope is greatly shortened.

The invention relates to a buffering and vibration isolation structure of an annular circuit board. The buffering and vibration isolation structure comprises n baffle plates, n rubber rings, and a box body pedestal. After the first rubber ring is embedded into the periphery of a first circuit board, the first circuit board is arranged at a first step of the box body pedestal and the first baffle plate is fixedly connected to a second step of the box body pedestal, wherein the lower surface of the first baffle plate compresses the first rubber ring; after the second rubber ring is embedded into the periphery of a second circuit board, the second circuit board is arranged at the upper surface of the first baffle plate and the second baffle plate is fixedly connected to a third step of the box body pedestal, wherein the lower surface of the second baffle plate compresses the second rubber ring; after the third rubber ring is embedded into the periphery of a third circuit board, the third circuit board is arranged at the upper surface of the second baffle plate, and so on; and then the nth baffle plate is fixedly connected with the upper end surface of the box body pedestal and compresses the nth rubber ring. According to the buffering and vibration isolation structure, a buffering and vibration isolation problem of a circuit board in a narrow and small mounting space can be solved; the good buffering and vibration isolation effect of a circuit board can be guaranteed; and rapid installation and dismounting of the circuit board can be realized.

The invention discloses a prismatic joint clamping device for an SF6 gas test of a GIS combined electric facility. The joint clamping device is used to communicate a prismatic gas chamber joint and atest joint and comprises a clamp connection member, a matching member, and a fastening member. The clamp connection member is connected to the prismatic gas chamber joint. The matching member is provided with a channel, which communicates the prismatic gas chamber joint and the test joint. The fastening member and the clamp connection member are connected through threads. The fastening member is used to push the connection between the matching member and the prismatic gas chamber joint. The joint clamping device is suitable for a prismatic gas chamber joint; a spiral locking structure is usedto replace a screw fastening mode, during the using process, only one fastening screw of the prismatic gas chamber joint is disassembled, the joint clamping device is connected to the gas chamber joint, then an air duct is leaded out through a second port, a test can be carried out; after the test, only one fastening screw is installed, the time for assembling and disassembling screws frequently during the test process is saved, a large amount of assembly-disassembly time is saved, the test process is optimized, and the test efficiency is improved obviously.

The invention provides a pediatric respiratory tract internal medicine atomization dosing device, and relates to the technical field of medical supplies. One end of a medicine tank communicates with amedicine conveying pipeline; one end of the medicine conveying pipeline communicates with a medicine feeder; one end of the medicine feeder communicates with a cover frame, and a mask is movably mounted on the side wall of one side of the outer surface of the cover frame; a dismounting device is movably mounted on the upper surface of the medicine feeder; and one side of the outer surface of themedicine tank communicates with a liquid outlet pipe. By arranging a cleaning device and starting the motor, the motor drives a rotating shaft device to rotate, the rotating shaft device drives an impeller to rotate in the direction of the motor, at the moment, the impeller rotates in the medicine tank to drive water to rotate, the effect of cleaning medicine stains in the medicine tank by rotating the direction of the water is achieved, the working time of operators is saved, and the structure is simple; and the operation is convenient, the cleaning effect is better, the influence on the nexttreatment effect due to incomplete cleaning is avoided, and the device is worth vigorously popularizing.

The invention discloses a spent fuel storage tank for a nuclear power plant. The spent fuel storage tank comprises a cylinder, a top cap which is fixedly connected with the top of the cylinder and isprovided with a first draining hole and a first inflating hole in a running through manner, a shielding cover plate which is arranged inside the cylinder and is arranged corresponding to the top cap,a bottom plate which is fixed at the bottom of the cylinder, a fuel grid which is arranged in the cylinder and put on the bottom plate, and a heat-conductive metal block which is arranged between theinner wall of the cylinder and the fuel grid, wherein a second draining hole runs through the shielding cover plate, and is arranged corresponding to the position of the first draining hole, a secondinflating hole is formed corresponding to the first inflating hole in a running through manner; draining components are inserted in the first and second draining holes in an embedded manner; inflatingcomponents are inserted in the first and second inflating holes in an embedded manner; and the draining components and the inflating components are fixed on the inner surface of the cylinder. Compared with the prior art, the spent fuel storage tank has the advantages that the cover plate is convenient in assembly positioning, solder sealing and cut retrieving operations and is simple in processing manufacture, and horizontal storage and vertical storage are available.

The invention discloses a die-cast lamp shell leak detection clamping tool. The die-cast lamp shell leak detection clamping tool is used for clamping a die-cast lamp shell. The die-cast lamp shell leak detection clamping tool comprises a work-piece table, a sealing ring, a fast clamping table arranged on the work-piece table, and a fast clamping device; the work-piece table is provided with an annular groove; the sealing ring is arranged in the annular groove; the fast clamping table is arranged at one side of the sealing ring; and the fast clamping device is installed on the fast clamping table and is used for pressing the die-cast lamp shell on the sealing ring so as to seal the inner cavity of the die-cast lamp shell. According to the die-cast lamp shell leak detection clamping tool of the invention adopted, the sealing ring is installed on the work-piece table, the die-cast lamp shell is pressed onto the sealing ring through the fast clamping device, so that the sealing of the inner cavity of the die-cast lamp shell can be realized; and since a sealing ring is not required to be installed on the die-cast lamp shell, when leak detection is carried out on a plurality of die-cast lamp shells, a plurality of times of dissembling and assembling sealing rings can be avoided, namely, labor can be saved, and the sealing ring has little possibility of being damaged.

The invention discloses an efficient polishing drilling machine special for mechanical processing. The efficient polishing drilling machine comprises a platen and supporting feet, wherein a control panel and an electric leakage protection device are installed on a fixed plate; a cooling water tank and a water pump are installed on the right side of a top plate; the water pump transports cooling water in the cooling water tank to a copper pipeline through a water inlet pipe and a water outlet pipe; a driving motor is installed on the left side of the top plate; and a sliding plate is connectedwith a threaded rod fixedly connected with the output end of the driving motor through threads, a lifting platform, a drilling motor and an air cylinder are fixedly installed on a supporting table fixedly connected with a sliding plate, the output end of the drilling motor is connected with a drill bit through a fixed bearing, a fixed platform is fixedly arranged on the platen, the supporting feetare fixedly installed below the platen, and vibration damping devices are installed on the supporting feet. The efficient polishing drilling machine is reasonable in structure and easy to operate, the drill bit can be quickly and efficiently controlled to drill parts in the horizontal direction, holes can be polished after drilling, the production efficiency is improved, and the service life of the drilling motor can be prolonged by arranging cooling water circulation.

The invention discloses a spent fuel storage tank for a nuclear power plant. The spent fuel storage tank comprises a cylinder, a top cap which is fixedly connected with the top of the cylinder and isprovided with a first draining hole and a first inflating hole in a running through manner, a shielding cover plate which is arranged inside the cylinder and is arranged corresponding to the top cap,a bottom plate which is fixed at the bottom of the cylinder, a fuel grid which is arranged in the cylinder and put on the bottom plate, and a heat-conductive metal block which is arranged between theinner wall of the cylinder and the fuel grid, wherein a second draining hole runs through the shielding cover plate, and is arranged corresponding to the position of the first draining hole, a secondinflating hole is formed corresponding to the first inflating hole in a running through manner; draining components are inserted in the first and second draining holes in an embedded manner; inflatingcomponents are inserted in the first and second inflating holes in an embedded manner; and the draining components and the inflating components are fixed on the inner surface of the cylinder. Compared with the prior art, the spent fuel storage tank has the advantages that the cover plate is convenient in assembly positioning, solder sealing and cut retrieving operations and is simple in processing manufacture, and horizontal storage and vertical storage are available.

The invention provides a multifunctional clamp for an aircraft storage tank vibration test, and relates to the technical field of mechanical design. The multifunctional clamp comprises a tank body, afirst mounting surface, a second mounting surface and a mounting ring, wherein the tank body is provided with a cavity for accommodating a storage tank, the cavity penetrates through a first end and asecond end of the tank body, the first end is provided with an opening for the storage tank to penetrate through, and the opening is communicated with the cavity; the first mounting surface covers the second end, is fixedly connected with the second end, and is used for being connected with a vibration table in a first direction; the second mounting surface is fixedly connected with the outer surface of the side wall of the tank body, is perpendicular to the first mounting surface, and is used for being connected with the vibration table in a direction perpendicular to the first direction; and the mounting ring is arranged between the first end and the second end, surrounds the inner wall of the cavity, and can be detachably connected with the storage tank. The multifunctional clamp for the aircraft storage tank vibration test can reduce the test cost and improve the test efficiency.

The invention discloses a hydrophone arc array low-frequency calibration device and a calibration method thereof. A simulation system comprises a vibration table, a liquid column fixedly arranged on the vibration table and a water tank attached to the outer side of the liquid column, and a calibration system comprises an arc array, a hydrophone array element arranged on the arc array, a reference hydrophone and an accelerometer arranged on the outer side of the liquid column. A suspension system comprises a transposition device and two suspension supports arranged on the transposition device, one suspension support can lift the arc array in a sliding and locking mode through a clamp at the tail end of a suspension rope of the suspension support, the other suspension support lifts the reference hydrophone through a suspension rope of the suspension support, and the transposition device can accurately exchange the positions of the two suspension supports. The hydrophone arc array low-frequency calibration device is easy to build on the land, can provide a stable low-frequency excitation and calibration environment for the arc array, takes into account the influence caused by the coupling of adjacent hydrophones, avoids the interference of the vibration of a liquid column and a water tank on the calibration, improves the calibration precision and speed, and avoids the repeated disassembly of the arc array.

The invention provides a brush head and a garment steamer. The brush head comprises a shell, an ironing plate, and a brush, wherein the shell is internally provided with a containing cavity, and the side wall of the shell is provided with a sliding groove; the ironing plate is arranged at the top position of the shell, and a plurality of brush holes are formed in the ironing plate; the brush comprises a brush body which is arranged on the sliding groove, and a locking structure and brush bristles; the locking structure is arranged at the corresponding part of the brush body and the shell; and the brush bristles are arranged on the brush body and correspond to brush holes, and the brush bristles are provided with ironing positions extending out of the brush holes and limited by the locking structure and hidden positions extending into the shell. By means of the structural arrangement mode, when ironing operation needs to be carried out, the bristles extend out of the brush holes of the ironing plate, and then the ironing operation is carried out; and after the ironing operation is completed, a user drives the bristles to enter the shell, and then the storage operation of the brush can be completed.

The invention discloses a line scribing pin for machining by a computer numerical control milling machine. The line scribing pin comprises a line scribing pin rod and a scribing needle, wherein the scribing needle is obliquely mounted at one end of the line scribing pin rod; a scribing needle head extends out of one side of the line scribing pin rod; and the other end of the line scribing pin rodis fixedly mounted with a spindle of the computer numerical control milling machine. The line scribing pin has the following beneficial effects: when a structure adopting the line scribing pin is fixedly mounted with a machine tool spindle, a certain angle is formed between the scribing needle and the side wall of a workpiece, and the machine tool spindle moves according to a program, so that a workpiece contour line and hole site can be scribed on the side wall of the workpiece; the line scribing pin is simple in structure, so that the repeated dismounting and mounting of the workpiece can beavoided, that is, all the line scribing work can be completed through one-time clamping operation; and accordingly, the machining and assembling efficiency can be improved, and the workpiece machining precision can also be improved.

The invention discloses a multi-stage dynamic continuously adjustable variable inertia hydraulic retarder test bench, which includes a main motor, a main shaft, a speed regulating assembly, an electronic control unit, a clutch and more than two inertia disk groups; more than two The inertia disc group is installed on the main shaft at a certain interval, and the main shaft is driven by the main motor; the speed regulating component adjusts the speed of the inertia disc group to be consistent with the spindle speed; the number of the speed regulating component and the number of clutches are consistent with the number of the inertia disc group; the electronic control unit According to the given working conditions, the inertia disc group is increased or decreased by controlling the coupling or disengagement of the clutch, thereby simulating the braking performance of the hydraulic retarder. The invention can simulate the braking efficiency of the hydraulic retarder under the condition of continuously changing slopes or continuous shifting conditions.

The invention discloses a magnetic suspension bearing stator, a magnetic suspension bearing, a motor, a compressor and an air conditioner, and relate to the field of air conditioners. The magnetic suspension bearing stator comprises a shell and a stator assembly, wherein the shell is provided with a mounting cavity, the stator assembly comprises a connecting ring, the outer circumferential wall ofthe connecting ring is in interference fit with the circumferential wall of the mounting cavity, a first positioning bulge and a first positioning groove are arranged between the connecting ring andthe shell, the first positioning bulge is embedded in the first positioning groove, in the circumferential direction of the connecting ring, the first positioning bulge is abutted against the groove wall of the first positioning groove, the first positioning bulge is arranged on the outer circumferential wall of the connecting ring, and the first positioning groove is formed in the circumferentialwall of the mounting cavity. The assembling difficulty of the stator assembly and the shell is low, and the mounting precision is high; the matching reliability between the connecting ring and the shell is high, even if the magnetic suspension bearing stator operates under a high-temperature working condition, the stator assembly can not shake relative to the shell in the circumferential direction, so that looseness of the stator assembly relative to the shell is avoided, and the system rigidity of the magnetic suspension bearing stator is improved.

The invention discloses a free-form surface part processing system based on the multi-sensor integrated measurement technology. A non-contact type sensor and a contact type sensor are integrated to form a surface measuring component, a surface processing component is provided with a milling cutter, and the surface measuring component is connected with the surface processing component by a linear guide rail. A point-cloud processing component is used for realizing geometric processing for point-cloud data obtained by the non-contact type sensor, and provides processing G codes which can be directly actuated by a current work table to the surface processing component for processing. The surface measuring component measures a workpiece in a non-contact manner, and then measures a product which is obtained by means of fine processing in a contact manner. A quality detecting component is used for comparing errors of measured data obtained by the contact type sensor and obtains results of the quality of the product. The non-contact type sensor and the contact type sensor are integrated, an integrated function of 'measuring, processing and detecting' is realized on the same machine tool, manual intervention is omitted in a total process, and processing efficiency and automation degree are improved.

The invention relates to an air humidification device applied to determination of the soil-air distribution coefficient of semi-volatile organic contaminants, and the air humidification device can be applied to the determination of the soil-air distribution coefficient of the semi-volatile organic contaminants. The air humidification device consists of an air inlet end, an air-liquid separation region and an air outlet end, wherein an annular glass protrusion is processed at the air inlet end, and an annular glass protrusion is processed at the air outlet end, so that combination of the air inlet end, the air outlet end and polytetrafluoroethylene tubes is tight, and the air impermeability of the combined place is strengthened; liquid filled in the air-liquid separation region is high-purity water or a saturated CaCl2 solution; in addition, a feeding tube with a glass plug is added to a spheric region, so that the distribution balance time is shortened, and frequent detaching of the air humidification device is also avoided. When the soil-air distribution coefficient of the semi-volatile organic contaminants is determined, the humidification manner of air can be simplified through the air humidification device disclosed by the invention, and the air humidification device has the characteristics of being quick, easy to operate and the like.

The invention provides a device for detecting fire monitor flow and hydraulic pipeline strength and pressure resistance of a fire fighting truck. A hydraulic pipeline is mounted on an arm support of the fire fighting truck, the hydraulic pipeline is connected with a pressure limiting valve arranged on the fire fighting truck, and a water inlet pipeline of the pressure limiting valve is respectively connected with an electric adjustable pressure test pump and a fire monitor flow calibration mechanism through a three-way joint. The fire monitor flow calibration mechanism is provided with a watersupply pump set and an electromagnetic flowmeter connected between the water supply pump set and the three-way joint; an exhaust controller is arranged on a hydraulic pipeline at the top end of the arm support, a channel is arranged in the exhaust controller, an electric control ball valve is arranged in the channel, one end of the channel is connected with the hydraulic pipeline through a flangeplate, an exhaust pipe is arranged at the other end of the channel, and a wireless control device and a power supply module which are connected with the electric control ball valve are further arranged on the exhaust controller. Fire monitor calibration and hydraulic pipeline strength and pressure resistance testing of the elevating fire fighting truck are combined, so that the detection efficiency of the elevating fire fighting truck is improved.

The invention relates to a buffering and vibration isolation structure of an annular circuit board. The buffering and vibration isolation structure comprises n baffle plates, n rubber rings, and a box body pedestal. After the first rubber ring is embedded into the periphery of a first circuit board, the first circuit board is arranged at a first step of the box body pedestal and the first baffle plate is fixedly connected to a second step of the box body pedestal, wherein the lower surface of the first baffle plate compresses the first rubber ring; after the second rubber ring is embedded into the periphery of a second circuit board, the second circuit board is arranged at the upper surface of the first baffle plate and the second baffle plate is fixedly connected to a third step of the box body pedestal, wherein the lower surface of the second baffle plate compresses the second rubber ring; after the third rubber ring is embedded into the periphery of a third circuit board, the third circuit board is arranged at the upper surface of the second baffle plate, and so on; and then the nth baffle plate is fixedly connected with the upper end surface of the box body pedestal and compresses the nth rubber ring. According to the buffering and vibration isolation structure, a buffering and vibration isolation problem of a circuit board in a narrow and small mounting space can be solved; the good buffering and vibration isolation effect of a circuit board can be guaranteed; and rapid installation and dismounting of the circuit board can be realized.

The disclosure provides a multifunctional fixture for vibration testing of aircraft storage tanks, and relates to the technical field of mechanical design. The multifunctional fixture includes a box body, a first mounting surface, a second mounting surface and a mounting ring, wherein: the box body has a cavity for accommodating the storage tank, the cavity passes through the first end and the second end of the box body, and the second One end has an opening for the storage tank to pass through, and the opening communicates with the cavity; the first mounting surface covers the second end and is fixedly connected with the second end for connecting with the vibrating table in the first direction; the second The installation surface is fixedly connected with the outer surface of the side wall of the box body, and is perpendicular to the first installation surface, and is used to connect with the vibrating table in a direction perpendicular to the first direction; the installation ring is arranged at the first end and the second end between, and surround the inner wall of the cavity, and can be detachably connected with the storage tank. The disclosed multifunctional fixture for the vibration test of the aircraft storage tank can reduce the test cost and improve the test efficiency.

The invention discloses a multi-stage dynamic continuous adjustable variable rotational inertia hydrodynamic retarder test bench, which comprises a main motor, a main shaft, a speed regulation assembly, an electronic control unit, a clutch and more than two inertia disc groups, the more than two inertia disc groups are arranged on the main shaft at certain intervals, and the main shaft is driven by the main motor; the speed regulation assembly regulates the speed of the inertia disc groups to be consistent with the rotating speed of the main shaft; the number of the speed regulation assemblies, the number of the clutches and the number of the inertia disc sets are consistent; and the electronic control unit increases or decreases the inertia disc groups by controlling combination or separation of the clutch according to a given working condition, so that the braking efficiency of the hydraulic retarder is simulated. According to the invention, the braking efficiency of the hydrodynamic retarder under the continuous change ramp working condition or the continuous gear shifting working condition can be simulated.

The invention discloses a portable steel rail laser rust removal device and a rust removal method. The laser rust removal device generally comprises an operating rod, a laser head assembly and a supporting structure. Compared with a conventional rust removal method, the portable steel rail laser rust removal device does not need to use any chemical agent and cleaning fluid, cleaned waste materials are basically solid powder, the size is small, storage is easy, recycling can be achieved, and the problem of environmental pollution caused by chemical cleaning can be easily solved.