24results about How to "Assembly accuracy is low" patented technology

This invention relates to the field of construction monitoring equipment technology, specifically a settlement observation instrument for roadbed safety construction. The instrument includes a string strain gauge and a differential pressure static level. The differential pressure static level has connecting pipes on both its air and water inlets, which are fixed to a conduit support. The signal line of the string strain gauge is fixed within the conduit support. The two ends of the string strain gauge are fixed to a fixed end and a floating end, respectively. The floating end includes a movable end seat fixedly fitted onto one end of the string strain gauge. This invention allows adjustment of the floating end's height position through a sliding fit between the upper ball joint and the rotating sleeve. The orientation and tilt angle of the floating end can be freely adjusted through the universal joint between the upper ball joint and the upper spherical shell, and between the lower ball joint and the lower spherical shell. During on-site installation, adjusting the floating end position ensures that the string strain gauge's measuring rod remains in a natural, unloaded, and unstressed state, thus avoiding measurement errors introduced by initial stress and effectively improving the accuracy and stability of roadbed settlement and tilt monitoring.

The invention relates to a radiation meter dense feed source array directional diagram optimization method based on a generative adversarial network. The method comprises the following steps: constructing a training data set, a condition vector containing a target directional diagram performance index and a corresponding optimal amplitude-phase weight vector; designing a conditional generative adversarial network model; constructing a physical constraint loss function by embedding a differentiable electromagnetic calculation module; loading the constructed training data set, and training a complete generative adversarial network model based on a loss function embedded with a differentiable electromagnetic calculation module; and when the system antenna pattern obtained according to the amplitude-phase adjustment parameters output by the generative adversarial network model meets the antenna pattern evaluation index, completing dense feed source array antenna pattern optimization. According to the method, the target weight is dynamically adjusted and optimized on orbit, so that a single model can adapt to beam forming requirements in different observation scenes, and flexible switching of multiple task modes such as high-resolution detection and wide-range general survey is realized.

A fixing clamp (2) for discharge outlet of intermediate bulk containers is disclosed. The discharge outlet (1) comprises a flange edge (3), a discharge connecting port (5) and a discharge outlet clamping part (4). The discharge outlet clamping part (4) is a polygonal structure. The fixing clamp (2) comprises a fixing clamp body, a clamping portion (8), elastic guiding ribs (7) and anti-release portion (9). A passage for accommodating the discharge outlet clamping part (4) is formed in the middle part of the fixing clamp body. The clamping portion (8) is used for clamping the side surface of the discharge outlet clamping part (4) when the fixing clamp (2) and the discharge outlet (1) have been assembled. The elastic guiding ribs (7) will be squeezed by the side surface of the discharge outlet clamping part (4) to deform When the leading-in surfaces of the elastic guiding ribs (7) contact with the side surface of the discharge outlet clamping part (4). The elastic guiding ribs (7) restore elastically and the anti-release portion (9) are engaged with the side surface of the discharge outlet clamping part (4) to prevent the fixing clamp (2) from being separated from the discharge outlet (1) after the fixing clamp (2) and the discharge outlet (1) have been assembled. The fixing clamp (2) can be transversely pushed in to be assembled with the discharge outlet (1). The fixing clamp has low requirements for assembly accuracy, and is favorable for saving cost and increasing efficiency.

This application relates to a vehicle body structure and a vehicle, wherein the vehicle body structure includes a sill beam and a battery pack. The battery pack is connected to the sill beam; the battery pack includes a battery pack crossbeam, which is fixedly connected to the sill beam. On a projection plane perpendicular to the height direction of the vehicle, the projections of the sill beam and the battery pack crossbeam partially overlap. By making the projections of the sill beam and the battery pack crossbeam partially overlap, a direct connection between the sill beam and the battery pack crossbeam can be easily achieved, enabling the transmission of forces between the battery pack and the sill beam. This eliminates the need for or minimizes the need for reinforcing members between the battery pack and the sill beam. Furthermore, to achieve the connection between the sill beam and the battery pack crossbeam, no additional connecting brackets or other structures for transition are required between them. The number of parts at the connection point between the sill beam and the battery pack is reduced, and the assembly precision requirements for the sill beam and the battery pack crossbeam are lower.

The application discloses a semiconductor wafer bin conveying system and a control method thereof, and relates to the technical field of semiconductor manufacturing automation. The system comprises a conveying unit and a material placing unit. The improvement lies in that the bottom of a wafer bin body is provided with three positioning grooves in isosceles triangle distribution, forming a mistaken orientation prevention structure; and the transfer frame and the material placing frame are respectively provided with a first set and a second set of limiting protrusions corresponding to the positioning grooves. The two sets of protrusions are configured to be selectively and sequentially clamped with the positioning grooves at the bottom of the same bin body during the conveying process, so that the anti-interference positioning handover from grabbing to placing is realized. The application eliminates the positioning collision risk between the conveying mechanism and the fixed station from the mechanical structure, and ensures the uniqueness of the direction of the wafer bin through the asymmetric geometric design. Meanwhile, the material placing frame can be integrated with elastic air supply and pressure sensing detection functions, realizing higher automation and reliability.

This utility model discloses a push-pull magnetic control handle for a teacup, including a handle body, which includes a handle body and a base disposed on the front side of the handle body. The base has a movable cavity, within which a strong magnet is movably disposed vertically. The strong magnet controls the valve of the magnetized body in the teacup. An actuating element is movably disposed within the movable cavity, and the strong magnet is mounted on the actuating element so that the actuating element drives the strong magnet to move vertically closer to or away from the magnetized body. Driving parts are provided on both sides of the actuating element, extending outside the base. When an external force pushes the driving parts upwards or downwards, the actuating element drives the strong magnet to move vertically, bringing it closer to or away from the magnetized body inside the teacup, thereby opening or closing the valve inside the teacup. This structure is not only convenient for manual operation but also simple in design, requires low assembly precision, and helps reduce production costs.

A scroll compressor includes a motor, a compression mechanism, a drive shaft and a bushing. The compression mechanism includes a fixed scroll and an orbiting scroll. The drive shaft has an eccentric journal. The bushing is designed to be movable relative to the eccentric journal to enable the orbiting scroll to have a variable eccentricity, wherein one axial section of the bushing is arranged between the orbiting scroll and the eccentric journal to enable the drive shaft to transmit power to the orbiting scroll via the one axial section of the bushing, and another axial section of the bushing is designed to limit the range of movement of the bushing relative to the eccentric journal to further define the range of variation of the variable eccentricity of the orbiting scroll. The bushing with the above configuration cooperates with the corresponding structure to reliably and effectively limit the range of movement thereof to enable the orbiting scroll to have a proper variable eccentricity, which reduces the requirement for assembly accuracy of the scroll compressor and thereby reduces the cost of the compressor.

This invention relates to the field of track conveying technology and discloses a track conveying module and sorting equipment, comprising: a track body extending along a first direction; a drive assembly including a drive mechanism, an open synchronous belt, and two bearing shafts with toothed grooves on their outer circumferences, the two bearing shafts being respectively disposed at both ends of the track body along the first direction, one of the bearing shafts being connected to the drive end of the drive mechanism for driven rotation, the two ends of the open synchronous belt respectively bypassing the two bearing shafts and engaging with the toothed grooves; and a sliding assembly slidably connected to the track body for carrying the items to be conveyed, the two ends of the open synchronous belt bypassing the two bearing shafts being fixedly connected to the sliding assembly. This track conveying module and sorting equipment can meet the requirements of long-stroke conveying while avoiding sudden jamming or failure of transmission components, effectively improving service life and operational reliability under conditions of relatively high dust levels and relatively long strokes.

This invention relates to an electronic expansion valve, comprising a drive assembly, a screw, a valve needle, a valve seat, a bearing, and a valve needle spring. The valve seat has a fluid passage. The drive assembly drives the screw to rotate and move axially. The valve needle has an axial mounting hole inside, and its upper part has a bearing cavity to accommodate the bearing. The lower end of the screw extends into the axial mounting hole and is rotatably connected to the bearing, allowing for axial sliding. A screw retaining ring is provided at its lower end, and a screw annular protrusion is provided on its outer periphery. The valve needle spring is sleeved on the screw and confined between the screw annular protrusion and the upper end face of the valve needle. Downward movement of the screw compresses the valve needle spring through the screw annular protrusion, pushing the valve needle downward. Upward movement of the screw pushes the valve needle upward through the screw retaining ring against the bearing, thereby achieving stable axial movement of the valve needle to precisely control the opening and closing of the fluid passage. This structure achieves pure axial transmission through the bearing, effectively preventing the valve needle from rotating and vibrating with the screw. The compact layout of the valve needle spring significantly shortens the axial dimension of the valve body, improving transmission reliability and service life.

This utility model relates to the field of sensor technology, providing a pressure sensor structure and an electronic pressure pen. The pressure sensor structure includes an elastic body and a flexible circuit board. The elastic body includes an elastic main body and a contact structure for contacting a pressure-applying structure of an external device. The flexible circuit board is located on the side of the elastic main body away from the contact structure and is electrically connected to the main control circuit board of the external device. The pressure sensor structure provided by this application has a simple overall structure. Furthermore, by adding the contact structure, the assembly precision between the elastic main body and the external pressure-applying structure is reduced. The force applied by the pressure-applying structure can be transmitted to the elastic main body more quickly, and the deformation of the elastic main body under force is more pronounced, which also improves the pressure sensitivity accuracy of the pressure sensor structure to a certain extent.

The present application relates to a kind of functionization outer diameter unequal thickness magnetic ring and its magnetizing method, belong to permanent magnet motor technical field, the inner diameter of unequal thickness magnetic ring is circular, and the outer diameter is change curve, wherein, the change curve of outer diameter is constant in main magnetic pole portion thickness, and the thickness is reduced in the transition position between adjacent main magnetic pole portion;The unequal thickness magnetic ring adopts bonded neodymium iron boron material.The present application is composed of a functionization outer diameter bonded neodymium iron boron magnetic ring and its matching multipole magnetizing fixture, wherein the outer diameter of magnetic ring adopts two kinds of functionization size, by reducing the thickness of magnetic pole transition area, the harmonic component of surface magnetism of magnetic ring is controlled, and the amplitude of cogging torque is reduced.The multipole magnetizing core of matching magnetizing fixture can magnetize magnetic ring into surface alternately distributed multiple magnetic poles.

A frameless car door C-pillar sealing strip upper corner, C-pillar sealing strip assembly, and vehicle are disclosed, relating to the field of vehicle body structure technology. The C-pillar sealing strip upper corner includes: a corner body having a top surface corresponding to the roof direction and an outer surface corresponding to the side of the vehicle; a water-blocking lip protruding from the inner, rear, and outer sides of the top surface to block water from flowing towards the rear and roof direction on the top surface; and a water guide channel disposed on the top surface to guide the water blocked by the water-blocking lip from the top surface to the outer surface. When water flows in from the gap between the side trim strip and the rear quarter window trim strip, the water is blocked by the water-blocking lip on the top surface of the corner body, preventing it from flowing towards the rear and roof direction. The blocked water is then guided by the water guide channel to the drainage channel inlet of the C-pillar sealing strip and discharged outside the vehicle along the drainage channel path. By improving the sealing structure at the water inlet and optimizing the water flow path, the water leakage problem of the C-pillar sealing strip assembly is solved at its root.

The mechanical arm feeding device comprises a moving frame, the moving frame is provided with a clamping jaw assembly and a position adjusting assembly, the clamping jaw assembly comprises two first clamping jaws which are oppositely arranged, the first clamping jaws are provided with air bags, the air bags are fixedly provided with second clamping jaws, and the position adjusting assembly comprises a first barrel and a second barrel. The second barrel is inserted into the first barrel, a spiral groove is formed in the inner wall of the first barrel, a protruding part is arranged on the outer wall of the second barrel and inserted into the spiral groove, a plurality of rotating plates are installed on the side, close to the clamping jaw assembly, of the second barrel, and a cushion layer is installed on the side, close to the axis of the second barrel, of each rotating plate. The position adjusting assembly further comprises a baffle, a first spring and a second spring, the baffle is fixedly connected with the first barrel, and the first spring is located in the second barrel. According to the mechanical arm feeding device and feeding method of the machine tool, a workpiece spline can be conveniently aligned and inserted into a machining position of the machine tool.

The utility model discloses a mounting and locking mechanism of an electric automobile battery, which adopts a split design of a first lock body and a second lock body, the battery on the second lock body and the first lock body on an electric automobile are quickly disassembled and assembled through a spring bolt, the requirement on assembly precision is low, the whole structure is compact, and the mounting and locking mechanism is suitable for limited space layout of the electric automobile. Vertical and parallel switching of the pressing strip and the kidney-shaped hole is achieved through 90-degree rotation of the spring bolt, a mechanical interlocking structure is formed in combination with threaded driving of the unlocking nut, the pressing strip vertically presses the two sides of the through groove during locking, stable locking force is provided, accidental loosening caused by vibration in the vehicle running process is effectively avoided, safety is improved, and the service life of the vehicle is prolonged. According to the electric vehicle battery quick-change locking device, quick separation can be achieved by reversely rotating the nut during unlocking, operation is easy and convenient, reliability is high, the disassembly and assembly efficiency is improved, in conclusion, the reliability is high, operation convenience and safety are achieved, the requirements for quick change and stable locking of an electric vehicle battery can be met, meanwhile, the maintenance cost is reduced, and the remarkable practical value and market application prospects are achieved.

The application discloses a kind of lunar surface equipment active heat control methods under lunar polar extreme environment, belongs to spacecraft thermal control technical field.The application aims at the problem of complex structure and poor reliability of spacecraft active heat switch.The application comprises setting L-shaped heat-conducting film, the outer surface of one fold surface of L-shaped heat-conducting film is fixedly connected with lunar surface equipment circuit board, and the outer surface of another fold surface is arranged corresponding to the glass fiber contact surface of lunar surface equipment;During lunar day, another fold surface of L-shaped heat-conducting film is controlled to contact with the glass fiber contact surface of lunar surface equipment, so that the heat generated by lunar surface equipment circuit board during operation is transferred to the glass fiber contact surface of lunar surface equipment through L-shaped heat-conducting film;During lunar night, another fold surface of L-shaped heat-conducting film is controlled to be separated from the glass fiber contact surface of lunar surface equipment, to reduce the rate of heat transfer from lunar surface equipment circuit board to outside.The application actively controls the on-off of heat transfer path, and the control precision is high.

The application discloses a drill pipe box and a drill pipe conveying device, and relates to the technical field of geological drilling mechanical equipment, which comprises a box body, a lifting mechanism and an adjusting mechanism; the box body is used for storing drill pipes; the adjusting mechanism is arranged outside the box body and is used for adjusting the height and / or the inclination angle of the box body; the lifting mechanism is arranged on the box body and is used for lifting or lowering the drill pipes in the box body; the lifting mechanism can lift the drill pipes to the top outlet of the box body, so that the drill pipes are rolled and transferred under the action of gravity; the application also provides a drill pipe conveying device, which comprises a storage arm, a catwalk machine and a drill pipe box; the storage arm is arranged between the drill pipe box and the catwalk machine and is used for transferring the drill pipes from the drill pipe box to the catwalk machine or from the catwalk machine to the drill pipe box; therefore, the device can reduce the operation difficulty and improve the drilling operation efficiency.

The utility model discloses an ultrasonic endoscope, include: the insertion part, including for inserting into the body's insertion pipe and the insertion pipe sleeve connected in the insertion pipe proximal end, operating part, including the fixed pipe of connecting in the insertion part sleeve proximal end, the compression ring is screwed on the outer periphery of insertion pipe sleeve, the proximal end and the distal end of fixed pipe are opposite, and the compression ring is used for realizing the axial compression of insertion pipe sleeve and fixed pipe, adjustable locking piece, along the radial activity of fixed pipe is connected in fixed pipe, can lock the relative circumferential rotation between insertion pipe sleeve and fixed pipe completely. Through the adjustable locking piece of radial activity setting of multiple along fixed pipe is additionally established on fixed pipe, through simple dismounting can adjust the installation angle of insertion part, reduces assembly accuracy requirement and operation difficulty, and reduces the size accuracy requirement of insertion pipe sleeve and fixed pipe and other parts, reduces the cost of generation, improves product yield.

This invention discloses a high-power-density planetary traction drive. A loading wedge space and a balancing space are formed on both sides of the radial distance circumference between the planetary rollers and the outer ring. A loading roller is located within the wedge-shaped loading space and rolls in contact with the planetary rollers and the outer ring. A balancing idler wheel is provided in the balancing space. The planetary rollers, balancing idler wheel, and loading rollers are all floating, with the loading rollers abutting against the planetary carrier. The torque or counter-torque transmitted by this invention can directly act on the loading rollers, achieving adaptive loading and making the loading process faster and more flexible. Optimization of the load in the contact area also improves the service life of the traction drive. The superposition of contact forces generates a larger clamping force, thereby ensuring sufficient tangential force in each contact area to transmit power. Furthermore, the planetary traction drive provided by this invention can achieve high-load transmission under the load-sharing effect of multiple rollers. The zero-spin design based on cylindrical rollers also minimizes power loss, resulting in high power density and improved transmission accuracy and efficiency.

The invention relates to the technical field of connecting pipes, and discloses a connecting pipe of a liquid-cooled driving water pump and a working method thereof.The connecting pipe comprises two sets of connecting pipe bodies and two sets of socketed pipes arranged on the outer sides of the connecting pipe bodies, and multiple sets of threaded grooves are formed in the inner sides of the connecting pipe bodies; the sealing reliability and the mass production consistency are improved, the multi-section cylindrical connecting structures at the two ends of the connector pipe are matched with the sealing pieces to form multi-stage sealing, traditional dynamic sealing is replaced with a closed static sealing assembly, the sealing performance of the connector pipe is improved, and the sealing performance of the connector pipe is improved. The problems of running, overflowing, dripping and leaking of cooling liquid under the working conditions of high temperature and low temperature ranging from minus 40 DEG C to 120 DEG C are thoroughly solved, meanwhile, the requirement for assembly precision is lowered through the standard connection and locking design, qualified batch production of products is achieved, and potential safety hazards of leakage of flammable and explosive media are eliminated.

The invention discloses a rolling mill pull rod thread clearance eliminating device and method. The rolling mill comprises a machine frame and a bearing seat assembled on the machine frame through a pull rod. A threaded section is arranged on each pull rod; a copper nut corresponding to the threaded section is arranged in each bearing seat; the pull rod rotates to drive the bearing seat to move; a spherical pad matched with a nut for use is coaxially arranged at one end, facing a rolling center, of the copper nut of the bearing seat; a wedge-shaped groove is formed in the peripheral side of the same horizontal section of the copper nut of the bearing seat; a hydraulic cylinder is arranged on the bearing seat on one side of the copper nut of the bearing seat, and a tensioning wedge block matched with the wedge-shaped groove is mounted at the free end of a piston rod of the hydraulic cylinder; and the hydraulic cylinder can drive the tensioning wedge block to extrude into the wedge-shaped groove, so that the copper nut and the spherical pad move towards one side of a rolled piece to eliminate a thread gap.

The utility model belongs to the technical field of storage tank suspension equipment, concretely relates to a rust removal hanging basket suspension device for the inner wall of outer floating roof tank, which comprises an outer floating roof tank, a wind-resisting ring and a connecting support for reinforcing the wind-resisting ring are fixedly connected to the outer wall of the outer floating roof tank, a fixed support frame is further arranged on the outer floating roof tank, a suspension cross beam is connected to the fixed support frame, a set of front-to-rear penetrating connecting holes are further arranged on the suspension cross beam, a rotating frame and a fixed frame are respectively arranged at the two ends of the suspension cross beam, a roller for guiding a steel wire rope is fixedly connected to the top end of the suspension vertical beam, a fixed mounting plate is further arranged on the wind-resisting ring, and a hanging basket is further arranged in the outer floating roof tank. The utility model ensures the balance and stability of the suspension device through the arrangement of support points and anchoring points, so that the hanging basket can be safely suspended on the tank top, the hanging basket can be operated up and down, the requirements of operators for working in the hanging basket can be met, and the utility model has simple structure and low manufacturing cost.

This invention discloses an adjustable wrench that achieves rapid opening and closing through nut rotation, relating to the field of manual hardware tools. It includes a wrench body, a movable jaw, an adjusting nut, a stop block, a compression spring, a pin, and a detachment pin. The wrench body has a fixed jaw and a sliding groove. The movable jaw is slidably fitted into the sliding groove, and its root shaft at the bottom end has a follow-up adjusting tooth and a guide slope. The adjusting nut is rotatably mounted on the wrench body via a pin and has a guide notch adapted to the guide slope, as well as anti-slip patterns that mesh with the follow-up adjusting tooth. The compression spring and the stop block are assembled in the movable groove of the wrench body, forming a constantly engaged locking mechanism for the adjusting nut. The detachment pin cooperates with the limiting groove of the movable jaw to form a full-stroke anti-detachment protection. This invention achieves a wide range of opening range adjustment within seconds through nut rotation, while also enabling precise micro-adjustment, and combines the advantages of stable locking, anti-detachment safety, and a simplified structure.

The utility model discloses a motor operation angle detection device belongs to motor control and sensor technical field, this device realizes through following technical scheme: the same multi -pole magnetic ring of motor pole pair number is outside in motor rotating shaft terminal, and magnetic ring is along the circumferential direction and alternately arranges N north pole and N south pole, the lateral installation mode is adopted to the encoder, and its induction surface is perpendicular to rotating shaft axis, is used for detecting magnetic ring magnetic field and exports rotor angle signal. The encoder supports PWM or ABZ incremental encoding signal or absolute value SSI / SPI output, improves every rotation signal period number through multi -pole magnetic ring design, realizes high resolution angle detection. This scheme is through the magnetic ring outside isolation motor internal electromagnetic interference, combines lateral installation and reduces assembly accuracy requirement, has improved the precision of angle detection, anti -interference ability and installation convenience obviously, is applicable to servo motor, robot joint etc. High -performance control scene.