22results about How to "Eliminate height difference" patented technology

The utility model discloses a large-section hydraulic tunnel main adit intersection excavation support door frame in the technical field of tunnel construction, which comprises a reinforcing door frame and a connecting piece, the reinforcing door frame comprises outer door beams and inner door beams, a semicircular door beam is fixedly connected between the top ends of the inner door beams, and a door frame cross beam is fixedly connected between the tops of the outer door beams; the semicircular door beam is connected with the inner side of the portal cross beam, linear reinforcing ribs are fixedly arranged between the outer door beam and the inner door beam, a plurality of sections of inclined reinforcing ribs are fixedly arranged between the semicircular door beam and the portal cross beam, oblique angle supporting pieces are jointly connected between the tops of the inclined reinforcing ribs, and the oblique angle supporting pieces are fixedly connected between the outer door beam and the portal cross beam at the same time; according to the utility model, the outer door beam can be connected and fixed with the main hole support, the inner door beam and the semicircular door beam are in transition connection with the branch hole bracket, and the outer door beam and the inner door beam are connected through the linear reinforcing rib, so that the support at the intersection forms a whole, the stress is dispersed, and a good support effect is provided.

The invention relates to the technical field of fan motor bearing detection, and discloses fan motor bearing full-automatic press fitting and coaxiality detection equipment which comprises a rack used for containing a to-be-detected machine shell and installing a coaxiality detection mechanism, and the coaxiality detection mechanism comprises an insertion type detection assembly; the plug-in type detection assembly comprises a first detection cylinder used for detecting the coaxiality deviation condition of a bearing groove in a machine shell. The extension assembly comprises a detection head; the first driving assembly is used for driving the detection head to move after entering the shell, so that the detection head is in contact with the inner wall of a bearing on the shell, the first detection cylinder is aligned with the bearing of the shell to be inserted, and the first driving assembly extrudes gas in the first detection cylinder to enable the detection head to move towards the inner wall of the bearing; by observing whether the distances of the detection heads extending out of the first detection cylinder are consistent and whether the detection heads can smoothly move in the bearing, the coaxiality deviation can be judged to be caused by the machining error of the bearing groove of the shell and the installation inclination of the bearing, and the positioning problem can be solved without extra disassembly.

The utility model discloses a sheet metal part positioning bending device, including device main part, setting on the bending assembly and positioning assembly of device main part, the bending assembly includes the bending groove and with the lower pressure mechanism of bending groove correspondence, and the positioning assembly includes the positioning baffle and support plate respectively setting in the both sides of bending groove, and the end surface of support plate is flush with the end surface of bending groove, and the both sides of support plate are provided with two sets of positioning shafts, and the positioning shaft is swing setting. The positioning baffle in scheme ensures the sheet metal part end positioning precision, avoids the sheet metal part along the length direction deviation when bending. The support plate is flush with the end surface of bending groove, eliminates the height difference of both junctions, prevents the partial deformation or surface indentation of sheet metal part after placing. The swing setting positioning shaft replaces the traditional manual holding positioning mode, reduces the safety risk of the hand of operating personnel being injured by the lower pressure mechanism, can continuously limit the top surface of sheet metal part, reduces the bending position deviation and angle fluctuation, and improves the bending precision.

The seat frame structure comprises a base and a supporting frame located above the base, a first connecting rod and a second connecting rod are arranged between the supporting frame and the base, the two ends of the first connecting rod are hinged to the front end of the supporting frame and the front end of the base respectively, and the two ends of the second connecting rod are hinged to the front end of the base respectively. Two ends of the second connecting rod are respectively hinged with the rear ends of the support frame and the base; the driving assembly is used for directly or indirectly driving the second connecting rod to rotate by taking the lower end as a fulcrum; in the sitting posture state, the second connecting rod inclines backwards relative to the vertical direction, after the seat backrest is put down backwards, the driving assembly drives the second connecting rod to rotate in the vertical direction, and the height of the rear end of the supporting frame can be increased. The automobile seat cushion has the advantages that when the automobile seat backrest topples backwards, the height difference between the seat cushion and the backrest can be made up, and comfort is improved.

The utility model provides a subway train switch car door automatic crossing plate device relates to underground traffic engineering technical field, including basic system, control system, gas path system and support system, the basic system includes the mounting seat, the mounting seat top is covered with the encapsulation lid, the encapsulation lid is fixed on the mounting seat through bolted connection mode, and the both sides form a interlayer, and the slide rail is equipped in the bottom in interlayer, through setting linkage mechanism between support frame and rubber crossing plate, constitute the parallelogram structure of deformable between movable support, support frame and two pair of rotary branch, and cooperate the pulling effect of tension spring, in the moment of rubber crossing plate from interlayer unhooking, rubber crossing plate is lifted to the same height position with encapsulation lid by movable support, thereby makes up the height difference between support frame and train door sill, and the passenger is convenient for passenger safety to get on and off the train, has solved the problem that the automatic crossing plate for existing train can produce certain height difference when using, and the passenger has the risk of tripping and falling when getting on the train.

This application discloses a power device and its fabrication method. The power device includes a semiconductor device, a first electrode, a second electrode, a filler structure, and a thermal buffer layer. The semiconductor device includes a first surface and a second surface opposite to each other along its thickness direction. The first surface is provided with a first electrode and a control electrode, and the second surface is provided with a second electrode. The first electrode is in contact with the first electrode. The second electrode is in contact with the second electrode. The filler structure is disposed between the control electrode and the first electrode. The wall surface of the filler structure facing the first electrode is flush with or protrudes from the wall surface of the first electrode facing the first electrode. The filler structure includes a solid insulating element, and the thermal resistance of the solid insulating element is less than or equal to the thermal resistance of air. The thermal buffer layer is sandwiched between the control electrode and the filler structure. The control electrode forms contact with the first electrode at least through the thermal buffer layer and the solid insulating element. The thermal expansion coefficient of the thermal buffer layer is between the thermal expansion coefficient of the control electrode and the thermal expansion coefficient of the solid insulating element.

The utility model relates to the field of metering valves, and particularly discloses a rotational flow assembly which comprises a rotational flow piece and a valve seat, a receding groove and a positioning groove are formed in the rotational flow piece, and a clamping groove, a valve groove and a valve hole are formed in the valve seat. The utility model further discloses a metering valve comprising the rotational flow assembly. Wherein the spinning disk is integrally formed by adopting a die-casting process, so that the structural strength of the spinning disk can be improved, the problem of deformation of the metering disk during installation in a split design is avoided, the production efficiency is improved, and the cost is reduced; in order to guarantee the flatness of the plane, the receding groove is formed in the sprue to eliminate the height difference of redundant materials at the sprue, and the fitting degree of the surface of the spinning disk is guaranteed; and the positioning groove can play a role in positioning the workpiece when the spray hole is drilled, so that the machining precision is higher.

The I-shaped buckle comprises an upper plastic pressing plate and a lower plastic pressing plate which are oppositely arranged, and the space between the upper pressing plate and the lower plastic pressing plate is used for clamping the disassembly-free heat preservation integrated floor; the upper pressing plate and the lower plastic pressing plate are connected through the plastic bolts, the disassembly-free heat preservation integrated floor slabs are arranged on the upper side of the lower plastic pressing plate side by side and located on the two sides of the plastic bolts, and the upper plastic pressing plate is embedded between every two adjacent disassembly-free heat preservation integrated floor slabs and corresponds to the lower plastic pressing plate in the vertical direction. The problems that an existing disassembly-free heat preservation integrated floor slab is prone to grout leakage at the abutted seam position, the height difference exists, and the post-treatment cost is high can be solved.

The application relates to a variable sweep telescopic wing structure, which comprises a wing platform and a wing assembly, the wing assembly comprising a first wing and a second wing, a first driving assembly, a rotating assembly and a lifting shaft, the rotating assembly comprising a first rotating shaft and a second rotating shaft which are connected in parallel on the wing platform, the first rotating shaft being coaxially sleeved on the lifting shaft, the first rotating shaft being fixedly matched with the lifting shaft in the circumferential direction and being slidably matched with the lifting shaft in the axial direction, the first wing being connected at the top of the lifting shaft, the second wing being connected at the top of the second rotating shaft, and the first wing and the second wing both being telescopic structures, the first driving assembly being transmissionally connected with the first rotating shaft and the second rotating shaft to drive the first rotating shaft and the second rotating shaft to rotate and drive the lifting shaft to lift. The structure can realize wing unfolding and folding with any sweep angle, increase the stability and flexibility of the aircraft, be telescopic to change the wing area, adapt to different flight states, improve the wing efficiency and improve the flight performance.

The application relates to an image splicing method, device and medium for micro-morphology three-dimensional reconstruction. The method comprises the following steps: arranging a plane flat crystal on a stage, leveling the stage to obtain a leveled stage; obtaining multiple local plane flat crystal images of the plane flat crystal in a calibration region according to the leveled stage; performing plane fitting calibration according to height data of the multiple local plane flat crystal images to obtain calibration data in the calibration region; obtaining multiple to-be-spliced images of a workpiece on the plane flat crystal; performing height compensation on the multiple to-be-spliced images according to the calibration data and splicing image coordinates of the multiple to-be-spliced images to obtain multiple candidate splicing images; and performing superimposed splicing according to the multiple candidate splicing images to obtain a workpiece splicing image. The method can calibrate the height of each image data, and high-precision splicing between images can be realized based on the position coordinates of the image data after calibration.

The utility model relates to electroencephalogram signal collection equipment technical field, especially a kind of non-invasive electroencephalogram electrode. The minimum thickness of current product shell is 0.9mm, and the thickness of the best comprehensive performance of conductive silicone is 0.7mm, and the conductive silicone of general electroencephalogram electrode is directly pressed and injected on copper contact, and the conductive silicone cannot completely adhere to head skin, which greatly affects the collection of electroencephalogram signal. The utility model provides a kind of non-invasive electroencephalogram electrode, tin paste layer and a tinned copper sheet are added between conductive silicone and copper contact, under the premise of keeping the elastic property and the best conductive performance of conductive silicone, the height difference of conductive silicone and product shell is eliminated, and the collection quality of electroencephalogram signal is improved.

The utility model discloses a stable type adjustable lifting seat which comprises a base, a buffer seat is fixedly connected to the interior of the base, a stabilizing pipe is fixedly connected to the top of the buffer seat, a lifting threaded rod is slidably connected to the interior of the stabilizing pipe, and the outer wall, close to the stabilizing pipe, of the lifting threaded rod is in threaded connection with an adjusting nut. The outer wall, close to the adjusting nut, of the lifting threaded rod is in threaded connection with a locking nut, the outer wall, close to the locking nut, of the lifting threaded rod is in threaded connection with a fixing nut, the fixing base moving upwards drives the stabilizing base to move upwards, and the stabilizing base moving upwards drives the connecting pipe to move upwards through the overturning rod. The connecting pipe moves upwards to drive the stabilizing plate to move upwards, the stabilizing plate moving upwards can make the stabilizing plate overturn around the overturning rod by limiting the limiting pipe through the locking groove, the stabilizing plate in overturning movement can overturn along with rising of the fixing base, and stability of the fixing base can be kept.

The utility model relates to the field of sand casting equipment technology, concretely to a kind of automatic moulding device for sand casting, it includes: rack, rack includes guide rail, and the feeding mechanism is equipped below guide rail, and feeding mechanism is used to transport sand mould, and mobile assembly is equipped on guide rail, and mobile assembly includes moving car, and moving car moves along guide rail, and lifting structure is equipped below moving car, and lifting structure is connected with gripper assembly, and gripper assembly is used to clamp sand mould.The utility model, middle gripper spacing is adjustable, can change the contact point of gripper and sand mould, avoid the sand mould deformation caused by the inappropriateness of gripper spacing;By setting buffer structure, utilize gasket can absorb part of small vibration, avoid the damage of sand mould caused by vibration in hoisting process;By adjusting the height of pad, the height difference caused by gripper machining error can be eliminated, to avoid sand mould damage due to uneven stress.

The application belongs to the technical field of ceramic membrane processing, and particularly relates to a flat plate ceramic membrane surface treatment device, which comprises a centralized cleaning box, a mounting box and a cleaning module installed in the centralized cleaning box; a bearing plate is fixedly connected in the mounting box, and the bearing plate is used for bearing a plurality of ceramic membrane sheets arranged in parallel at equal intervals; the cleaning module is inserted into the centralized cleaning box and used for cleaning the surfaces to be cleaned of the ceramic membrane sheets; through cooperation of the mounting plate and the inclined surface of the cleaning scraper, horizontal driving force is converted into downward adhesion force of the cleaning scraper, the cleaning scraper is pressed to be displaced downwardly and obliquely until the cutting edge of the cleaning scraper is tightly attached to the surface to be cleaned of the ceramic membrane sheet, unevenness on the surface of the membrane sheet can be automatically compensated, effective contact of the cleaning scraper with the surface to be cleaned of each ceramic membrane sheet is ensured, height difference caused by the fixedly installed scraper is eliminated, the problem of cleaning dead angle or membrane sheet damage caused by height difference in the prior art is solved, and the effect of centralized cleaning of the ceramic membrane sheet is more uniform and safe.

The utility model discloses a petroleum drilling coring cylinder coring device which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with two sliding rails, the two sliding rails are both connected with sliding blocks in a sliding mode, the upper ends of the two sliding blocks are jointly and fixedly connected with a placing table, the upper end of the placing table is provided with a placing groove, and the upper end of the placing table is provided with a positioning groove. An L-shaped block is fixedly connected to the left side of the containing table, a hydraulic rod is fixedly connected to the right side of the L-shaped block, a push plate is fixedly connected to the telescopic end of the hydraulic rod, a mounting block is fixedly connected to the rear side of the containing table, and a driving motor is mounted at the upper end of the mounting block. According to the device, in the coring process of the coring cylinder, the placing table can transversely move through operation of the driving motor, then rock cores can be orderly arranged on the ground, and when the push plate moves back, water flow can be used for flushing the inner wall of the coring cylinder.

The utility model discloses a cross beam for eliminating the jump of an auxiliary frame, and relates to the field of glass curtain walls. The structure comprises an aluminum alloy stand column, general glass and rotating glass, an aluminum alloy cross beam is fixed to the inner side of the aluminum alloy stand column, silicone structural sealants are fixed to the ends, close to the aluminum alloy stand column, of the two sets of general glass, and an aluminum alloy auxiliary frame is fixed to the ends, close to the aluminum alloy stand column, of the two sets of silicone structural sealants. EPDM rubber strips are fixed to the ends, close to the aluminum alloy stand column, of the two sets of aluminum alloy auxiliary frames, the two sets of EPDM rubber strips are connected with one side of the aluminum alloy cross beam in a clamped mode, a first aluminum alloy pressing block is fixed to the middle of the side, close to the general glass, of the aluminum alloy cross beam through second bolts, and the two ends of the first aluminum alloy pressing block are fastened to the aluminum alloy auxiliary frames in a clamped mode. According to the utility model, a plurality of groups of aluminum alloy plates are pre-embedded and spliced, so that the height difference on the cross beam of the hidden frame curtain wall is effectively eliminated, the surface of the glass curtain wall is flat, and the safety and the aesthetic property of the glass curtain wall are improved.

The present disclosure provides a paint leveling device and a paint pointing device. The paint leveling device comprises a roller and a driving assembly. The outer side wall of the roller is provided with a plurality of mounting positions for fixing a curved workpiece. The driving assembly is connected to one end of the roller arranged along the axial direction of the roller for driving the roller to rotate. In this way, the distribution of paint on the surface of the curved workpiece is more uniform.

This utility model discloses a cup polishing device with a rotating frame leveling function, including a frame, a gantry, a slide block, and a rotating frame. The frame has first slide rails extending horizontally along the X-axis on both its left and right sides. The gantry is slidably connected to the first slide rails on both sides, and a displacement drive mechanism is connected to both sides of the gantry. A second slide rail extending vertically along the Z-axis is also provided on both sides of the gantry. There are two slide blocks, each slidably connected to the second slide rails on both sides, and a lifting drive mechanism is connected to each slide block. The rotating frame is mounted between the two slide blocks and can rotate around the C-axis on the slide blocks. A first rotation drive mechanism is connected to both sides of the rotating frame. This patent allows adjustment of the front-to-back position of one side of the gantry and the height of the slide block on one side to adjust the rotating frame, and the dual drive mechanism makes the movement more stable.

This disclosure relates to the technical field of equipment for grinding wheel production. One embodiment of this disclosure provides a feeding device for grinding wheel production, comprising: an equipment frame, a first cylinder, a second cylinder, and a pair of pusher plates. The first cylinder and the second cylinder are respectively mounted on the two side surfaces of the equipment frame. The pusher plates are located at the output ends of the first cylinder and the second cylinder. A top frame is fixed to the top of the equipment frame. A leveling component is mounted on the top frame. Both a low-level material tank and a high-level material tank are mounted on the equipment frame and fixed to a support. A conveying pipe is provided at the bottom of both the low-level and high-level material tanks. A spiral pusher is installed inside the conveying pipe, and the spiral pusher is rotated by a motor. A discharge pipe is provided at the bottom of the conveying pipe. This technical solution solves the technical problem that existing grinding wheel production feeding machines generally use a single feeding mechanism and rely solely on high-quality materials for production, a traditional model that brings many problems that urgently need to be addressed.

The utility model provides a cylindrical battery sealing welding device which comprises a support, a compensation mechanism lifting mechanism, a pressing driving mechanism and a welding gun, and a compensation mechanism is arranged on the support and used for compensating height difference in the cylindrical battery welding process. The lifting mechanism is arranged at the movable end of the compensation mechanism, is used for placing the cylindrical battery and can rotate on the lifting mechanism; the pressing driving mechanism is arranged on the support, located on the side, away from the lifting mechanism, of the cylindrical battery and used for pressing the cylindrical battery and driving the cylindrical battery to rotate. The welding gun is arranged on the support, the position of the welding gun corresponds to the sealing position of the cylindrical battery, and the welding gun is used for conducting sealing welding on the rotating cylindrical battery; the device can effectively compensate the height difference of the cylindrical battery in the welding process, ensures that the focus of the battery is kept on the same point during welding, effectively controls the state consistency of a molten pool, reduces the safety risk, and improves the welding quality and consistency.

This invention relates to the field of structural design technology for boarding bridges, and more specifically, to a boarding bridge connection platform with a buffer function. The platform includes a fixed base, a vertical floating platform, and a vertical guide mechanism and a vertical buffer mechanism disposed between the two. The fixed base connects to a passageway, and the floating platform connects to a canopy. The vertical buffer mechanism has two stiffness modes: when the boarding bridge is dynamic, the vertical buffer mechanism is adjusted to a low stiffness mode; when the boarding bridge is static, the vertical buffer mechanism is adjusted to a high stiffness mode. This invention provides a boarding bridge connection platform with a buffer function that solves the problem that the front connection platform of existing boarding bridges is usually an integral rigid structure, which only absorbs horizontal errors when the aircraft is parked through the horizontal buffer canopy at the front end, and cannot compensate for vertical settlement and turbulence displacement caused by passenger / baggage loading and fuel changes during passenger boarding and disembarking.