671 results about "Right triangle" patented technology

The invention relates to the technical field of ocean engineering digital twinning and three-dimensional visualization, and provides a method and system for generating dredging terrain twinning based on a right-angle triangular mesh, and the method comprises the steps: obtaining regular grid elevation unified to an engineering plane coordinate system or preprocessed sampling height data, determining a covered space range, reading the space range and density parameters, and calculating the total row number and the total column number of the grids based on the space range and the density parameters; generating regularly arranged vertexes in the covered space, and constructing a topological structure of an isosceles right triangle grid; dividing the global grid into a plurality of Chunk blocks according to a fixed size by taking a vertex as a unit, establishing a triangular index mapping relationship between global rows and columns and the Chunk blocks, filling three vertexes of an isosceles right triangle and elevation / height data in each Chunk block in parallel, and generating local VBO, IBO and AABB; and performing batch rendering and coloring according to a height color table on all Chunk blocks to realize visualization of the terrain.

The invention discloses a continuous overturning and pouring device for saggars, which relates to the related technical field of material conveying and blanking and comprises an overturning unit, a driving unit and a cover pushing unit. The overturning unit comprises a rotating motor, a rotating roller is arranged at the output end of the rotating motor, a baffle is arranged at one end of the peripheral side of the rotating roller, a bottom supporting plate is arranged at one end of the baffle, and a top supporting plate is arranged at the other end. The driving units are arranged on the two sides of the baffle in a mirroring mode, each driving unit comprises a second linear mechanism arranged at one end of the peripheral side of the rotating roller, a vertical L-shaped plate is arranged at the output end of the first linear mechanism, a transverse L-shaped plate is arranged at the upper end of the vertical L-shaped plate, and a cover blocking block further extends from the upper end of one short side of the C-shaped clamp. The cover pushing unit is arranged below a driving unit, a transverse rod is arranged at the output end of the fourth linear mechanism, and a pair of triangular blocks with right-triangle-shaped sections is arranged on one side of the transverse rod. According to the saggar overturning and discharging device, the saggar can be automatically overturned and discharged, and the saggar can be automatically overturned and put back to the roller conveyor.

A compact substrate integrated waveguide triangular cavity dual-band band-pass filter is sequentially provided with an upper metal layer, a dielectric layer substrate clamped between the two metal layers and a lower metal layer from top to bottom, and the upper metal layer is connected with the lower metal layer through a metalized via hole. The middle dielectric layer substrate and the middle dielectric layer substrate form a cavity filled with dielectric, and the shape of the cavity is an isosceles right triangle. The whole filter is composed of four isosceles right-angle triangular cavities, and the whole filter is of a square structure. According to the invention, the passband parallel connection technology and the harmonic coupling control technology are combined, and the mode cross coupling technology is used, so that double passbands are realized, a transmission zero point is generated on a transition band between the two passbands, and the isolation degree between signals passing through the two passbands is improved. In addition, the whole filter is very simple and compact in structure.

The present invention discloses a bending device for angle steel production, which relates to the technical field of angle steel processing, and includes an operating table, a stamping mechanism, and a detection unit. The operating table is equipped with a bending mechanism for bending the angle steel, and the bending mechanism includes two bending blocks and a power assembly for pushing the angle steel to bend. A stamping groove with a right-angled triangle cross section is provided at the center of the operating table. Two symmetrically distributed arc grooves are provided on the operating table with the right angle point of the stamping groove as the center of the circle. An arc slider is connected to the bottom of each bending block, and the two arc sliders are slidably connected to the two arc grooves respectively. The stamping mechanism is installed on the operating table for stamping before the angle steel is bent. The right-angle detection head provided by the present invention can perform right-angle detection on the stamping cutter and the angle steel bent part during the two processes of stamping and bending, which ensures product quality on the one hand and facilitates timely discovery of product problems and the cause of the problems on the other hand.

The invention discloses a composite toggle type displacement amplification damping device of a self-resetting damper and an assembly method, and belongs to the technical field of structural engineering and structural earthquake resistance, the device comprises a steel frame structure, the self-resetting damper installed on the steel frame structure, a toggle type supporting rod piece and a right-angle curved bar; one end of the self-resetting damper is hinged to the steel frame structure, the other end of the self-resetting damper is hinged to a right-angle curved bar, the end of the first supporting piece and the end of the second supporting piece are hinged to the steel frame structure, and the end of the third supporting piece is hinged to the right-angle curved bar which is hinged to the steel frame structure. A movable triangular plane is formed among the second supporting piece, the third supporting piece, the right-angle curved bar and the self-resetting damper, and a plane formed by connecting lines between hinge points on the right-angle curved bar is a right triangle. The damper can solve the problems of low damping efficiency and large post-earthquake residual deformation caused by insufficient relative deformation of the two ends of an existing damper and incapability of fully dissipating earthquake energy.

The invention provides an ultrasonic-guided out-of-plane positioning and guiding method, system and device, a medium and a program product, and relates to the field of intelligent medical treatment. The method comprises the steps that an ultrasonic image containing a to-be-punctured target C is obtained, and the distance between the to-be-punctured target C and skin A is measured according to the image; the projection point of the edge midpoint of the detection end of the narrow surface of the ultrasonic probe in the transverse axis direction of the ultrasonic probe is a point A; acquiring one half of the length of the narrow surface of the ultrasonic probe as AB; lines of the AB and the AC are perpendicular to each other; calculating a predicted puncture depth BC according to AB and AC; the line segment AD is equal to the line segment AC on the basis that the image extends to the point D in the reverse direction of the AC; making a line segment DE perpendicular to the line segment AD, wherein the length of the line segment DE is twice that of the line segment AB; the puncture needle punctures the target object to be punctured in the directions of the point E and the point B, and the puncture depth is the BC length. The method calculates the predicted needle insertion depth through the right triangle function principle, does not need to calculate the needle insertion angle, is simple and effective, and is high in success rate.

The utility model discloses a device for preventing collapse of a high-position cut pile. The device comprises a telescopic adjusting ring, a vertical telescopic supporting rod, an inclined telescopic supporting rod and a horizontal telescopic supporting rod, the pile head is sleeved with the telescopic adjusting rings of the rectangular annular structures and abuts against the side wall of the pile head. The vertical telescopic supporting rods, the inclined telescopic supporting rods and the horizontal telescopic supporting rods are hinged to form anti-collapse supporting components of right triangle structures, and the four sets of anti-collapse supporting components are arranged on the outer sides of the corners of the telescopic adjusting ring. The lowermost telescopic adjusting ring and the horizontal telescopic supporting rod are connected in the same horizontal plane, and the corners of the other telescopic adjusting rings are connected with the vertical telescopic supporting rods. The utility model relates to the technical field of constructional engineering, and can solve the problems of poor convenience, high economic cost, large site limitation and poor safety caused by connecting pile heads through a steel wire rope by adopting a large machine in the prior art. The problems that in an existing device, a supporting rod is prone to slipping, and the adaptability to square piles and round piles and square piles of different sizes is not high due to limited resistance bending moment can be solved.

The invention discloses a combined structure of an assembled ditch and a retaining wall and a construction method thereof, and belongs to the technical field of agriculture and forestry land reclamation. The structure comprises a ditch and a retaining wall, the ditch is formed by interlocking and clamping a bottom plate and a wall plate through a broken-line-shaped groove and a tenon, and the outer side of the ditch is wrapped with hydraulic cloth and a hydraulic film in a layered mode to enhance the impermeability; the retaining wall adopts the right triangle buttress and the hollow reinforced concrete baffle, is fixed through the plug pin and is connected with the ditch through the inhaul cable in the threading pipe, so that the anti-overturning and anti-sliding stability is improved. The construction method comprises the steps of prefabricating the components, laying impermeable materials in a layered mode, conducting modular assembling, conducting backfilling and greening and the like. Through structure optimization and standardized prefabrication, the problems that a traditional cast-in-place structure is long in construction period, high in manufacturing cost and the like are solved, and the advantages of being rapid in assembly, multiple in seepage prevention, capable of saving cost and environmentally friendly are achieved. Compared with a cast-in-place scheme, the comprehensive manufacturing cost is reduced, the construction efficiency is remarkably improved, and the water and soil loss prevention and control effect is better.

The utility model discloses a calibration device for a sight, relates to the technical field of sights, and comprises a fixing tube, a sight body, a group of mounting mechanisms, and a group of calibration mechanisms; the components and functions of the group of mounting mechanisms are the same; the components and functions of the group of calibration mechanisms are the same; a base is arranged on the fixing tube, a group of calibration mechanisms are arranged on the base, a group of mounting mechanisms are respectively arranged on a group of calibration mechanisms, and the sight body is arranged on a group of mounting mechanisms; the calibration mechanism comprises a mounting seat, an adjustment seat and a support seat arranged on the mounting seat; the mounting seat is in an L-shaped structure; the adjustment seat is in a right-angled triangle structure, and a side of the support seat facing the adjustment seat is provided with an inclined surface matched with the inclined surface of the adjustment seat; the shooter can adjust the sight body in multiple directions according to his shooting habits, so as to improve the shooting accuracy.

The invention belongs to the technical field of mechanical part machining, and particularly relates to automatic feeding and discharging laser cutting equipment for flange plate production. The automatic feeding and discharging laser cutting equipment comprises a workbench, a slag discharging opening is formed in one side of the upper end of the workbench, a recycling opening is formed in one side of the lower end of the workbench, and the recycling opening is in an inverted right triangle shape and communicates with an inner cavity of the slag discharging opening; a discharging cleaning assembly is arranged in an inner cavity of the slag discharging opening, a feeding cutting assembly is arranged above the slag discharging opening and used for cutting an alloy steel plate machining flange plate, and the problems that due to cutting of existing laser cutting equipment, a large amount of waste residues generated through laser heating gasification can be generated, the waste residues are accumulated in a workbench for a long time, and the waste residues generated through laser heating gasification can be mutually bonded and blocked; if the flange plate is cleaned in time, the penetrability of the laser cutter can be influenced by waste residues, and after the flange plate is cut, the alloy steel plate, the flange plate and waste materials need to be separated and recycled, so that the operation is tedious, and the production efficiency of the flange plate is influenced.

The invention relates to an explosive shock wave absorbing structure and a design method, and relates to the technical field of underground mine mining, the wave absorbing structure comprises a core wave-blocking rock and a roadway arranged with the core wave-blocking rock as the center, the core wave-blocking rock is a right triangle or obtuse triangle, one side of the corner with the largest angle is an explosive warehouse connecting roadway, and the other side of the corner with the largest angle is an explosive warehouse connecting roadway. The explosive warehouse connection lane is connected with the underground explosive sub-warehouses, the explosive warehouse connection lane serves as an inlet end of explosive shock waves of the explosive warehouse, the two edge sides and the opposite edge side connected with the corner, with the largest angle, of the triangular structure of the core wave blocking rock serve as shock wave gas buffering lanes, and a safety lane connection lane is arranged at the midpoint of the opposite edge of the corner with the largest angle. Through the engineering arrangement of the explosion shock wave absorbing structure, shock waves generated by accidental explosion of an underground explosive warehouse can be absorbed, so that the effect of protecting main roadways, personnel and equipment at the output end position is achieved.

The utility model relates to the technical field of sweeping robots, in particular to a cleaning mechanism of an indoor sweeping robot, which comprises a first vertical plate and a second vertical plate, a telescopic component is arranged between the first vertical plate and the second vertical plate, a connecting plate is fixedly arranged on the left side of the first vertical plate, and two groups of cleaning units are arranged on the left side of the connecting plate; the cleaning unit comprises a support, the support is of a hollow right triangle structure, supporting shafts are assembled at the three corners in the support in a penetrating mode, transmission wheels are assembled on the supporting shafts on the lower side of the support and are in transmission connection through cleaning belts, cleaning brushes are fixedly arranged at the lower ends of the cleaning belts, and belt wheels are assembled on the supporting shafts on the upper side of the support. The belt wheels are in transmission connection through a belt. Through the two sets of cleaning units which are arranged in an attached mode and are of a right triangle structure, the bottom and corners of the wall surface can be effectively cleaned, adaptability is high, the cleaning effect is remarkably improved, and the overall cleanliness of the indoor environment is guaranteed.

The utility model discloses a prism structure, a visual angle expanding film, a backlight module and a display device, and relates to the technical field of optical films. The prism structure comprises a plurality of first prism parts and a plurality of second prism parts, the top of the second prism part is connected with the bottoms of the first prism parts; wherein the cross sections of the first prism parts are isosceles right triangles, the cross sections of the second prism parts are isosceles trapezoids, and the top width of the second prism parts is the total bottom width of the first prism parts. According to the utility model, the problems that the 1 / 2 light intensity range in the horizontal direction of a general display is within + / -50 degrees, and the 1 / 2 light intensity range in the vertical direction of the general display is within + / -35 degrees due to a single prism sheet, or a diffusion film and prism sheet bonding (DOP) / micro lens film and prism sheet bonding (MOP) and other structures with single prism layers in the current brightness enhancement film technology are solved; if a double-layer prism framework optical film scheme is used, the 1 / 2 light intensity range in the horizontal direction and the 1 / 2 light intensity range in the vertical direction are both lower than + / -35 degrees.

The utility model discloses a gantry three-coordinate measuring machine, which comprises a cross beam, the cross section of the cross beam is an isosceles right triangle, and the cross beam comprises a hypotenuse part; a first right-angle notch part and a second right-angle notch part are respectively formed at two 45-degree corner parts of the cross beam; the sliding frame comprises a sliding frame connecting plate, and the sliding frame connecting plate is parallel to the bevel edge part; a first air floating sliding block and a second air floating sliding block are arranged at the bottom of the sliding frame connecting plate, the first air floating sliding block is in sliding contact with the first intersection part, and the second air floating sliding block is in sliding contact with the bevel edge part; a third air floating sliding block and a fourth air floating sliding block are installed on the top of the sliding frame connecting plate, the third air floating sliding block is in sliding contact with the second intersection part, and the fourth air floating sliding block is in sliding contact with the bevel edge part. Through the distribution of the six air floating sliding blocks, stable, effective and symmetrical sliding support can be realized for the cross beam, so that the sliding frame moves more stably, the abrasion of the sliding frame is reduced, the motion performance is obviously improved, the motion torsional pendulum is reduced, and the measurement precision of the measuring machine is improved.

The utility model belongs to the technical field of relays, and especially relates to an automobile relay comprising a housing; the two fixing plates are detachably arranged on one side wall of the shell, and the two fixing plates are arranged on the two sides of one side wall of the shell in a spaced mode; the two limiting sets are arranged on the opposite sides of the two fixing plates correspondingly, each limiting set comprises a plurality of limiting grooves formed in the height direction of the fixing plates at intervals, each limiting groove is in an inverted right triangle shape, one right-angle side of each limiting groove is the top end of the corresponding limiting groove, and the other right-angle side of each limiting groove is the side wall of the opposite side of the corresponding fixing plate; one end of the connecting plate is inserted between the two fixing plates, and the other end of the connecting plate extends to the upper part of the shell; the elastic ends of the two elastic limiting pieces are oppositely arranged in the two sides of the connecting plate respectively, and the limiting ends of the two elastic limiting pieces are inserted into the limiting grooves through the elastic ends respectively; the two sides of the connecting plate are each provided with a containing groove for installation of the elastic limiting piece. The utility model has the beneficial effects; and the connection position is adjustable.

The utility model provides a sealing ring structure of a chip and the chip, the sealing ring structure surrounds a chip main body and is arranged in a dielectric layer above a substrate, the sealing ring structure comprises an inner sealing ring, the inner sealing ring surrounds the chip main body and comprises a plurality of straight edges, extension lines of adjacent straight edges form a right angle, and a chamfer is formed between adjacent straight edges; the outer sealing ring is arranged around the inner sealing ring, and chamfers are formed between the adjacent straight edges; the right triangle sealing areas are arranged on the periphery of the chamfer of the outer sealing ring on the outermost layer, the bevel edges of the right triangle sealing areas are opposite to the chamfer, and the right-angle edges of the right triangle sealing areas are overlapped with the extension lines of the straight edges of the outer sealing ring on the outermost layer; in the thickness direction of the chip body, the inner sealing ring, the outer sealing ring and the right triangle sealing area comprise a plurality of metal layers, and a plurality of staggered metal strips coupled between every two adjacent metal layers are arranged between the adjacent metal layers. According to the technical scheme, the sealing ring is stable in structure, especially at the corner.

A multi-purpose framer's speed square in the form of a right triangle comprising a top plate with a T-shaped edge and a series of etched top plate lines including framing top plate call outs, a notched front edge having a plurality of notches spaced along the length in ¼″ increments, ruler etching callouts, and lumber width callouts denoting lumber sizes, and a hypotenuse edge having etched top plate lines, common rafter window plumb cut outs and a hip / valley section disposed above the hypotenuse edge having etched degrees and hip / valley roof rafter plumb cuts.

The invention discloses a picture type hyperspectral full-wave band imaging system based on image space scanning. The system comprises a telescope system, an image space scanning mirror, a view field separation device, a spectrograph and a detector, wherein the spectrograph and the detector are arranged at different wave bands from visible light to long-wave infrared light; wherein the image space scanning mirror is in the shape of a cylinder with a right triangle section, a central optical axis is arranged in the image space scanning mirror, and the image space scanning mirror can move in parallel or rotate horizontally along the central optical axis to form rectangular view fields in different directions and at different angles; light from the rectangular area of the earth surface is converged to the image space scanning mirror through the telescope system, and a plurality of rectangular view fields are formed at different positions; and after passing through the field of view separation device, the light is split by a spectrograph and received by a detector in different bands of visible light-long wave infrared, and the problem of virtual focus of an image plane is avoided in the process of obtaining the hyperspectral full-band earth surface information in a picture manner. According to the invention, a foundation is laid for high-resolution area array staring imaging and full-band picture type hyperspectral and multispectral comprehensive detection.

The invention discloses a pile side load transmission prediction method for a cast-in-place pile in an IGM stratum, and belongs to the technical field of pile foundation bearing characteristic research. The method comprises the following steps: predicting lateral and vertical load transfer behaviors of the cast-in-place pile under different IGM stratum mechanical properties, pile body geometry and material properties and aperture roughness; a hole wall two-dimensional profile curve is drawn, reconstruction based on a similar right triangle rough body is conducted on the hole wall curve according to the characteristic value of the curve, the height distribution of the hole wall curve is made to accord with the Gaussian distribution law, and therefore the pile IGM contact face characteristic formed in the actual drilling process is simulated; the method comprises the following steps: performing mechanical modeling on a single triangular rough body to obtain local shear stress, summarizing a stress deformation rule, and popularizing a calculation method to a large number of similar triangular rough bodies on a macroscopic contact surface in combination with statistical parameters. And an effective way is provided for quantitative prediction of the cast-in-place pile side load transmission behavior considering the hole wall roughness.

The utility model discloses a sound barrier structure arranged back to a noise source, which comprises a T-shaped device body, the top end of the device body is provided with a sound absorber structure, the sound absorber structure comprises a plurality of tip sound absorbers which are arranged in sequence, each tip sound absorber is of an isosceles right triangle structure, and the tip sound absorbers are arranged at the top end of the T-shaped device body. The first right-angle side of each tip sound absorber serves as the bottom of the tip sound absorber and is connected with the top end of the T-shaped device body, the first right-angle sides and the inclined sides are arranged in the mode that the first right-angle sides and the inclined sides do not face a noise source, namely the second right-angle sides are opposite to the noise source, and the second right-angle side of each tip sound absorber serves as the height of the tip sound absorber and is right opposite to the noise source in a vertical mode. Compared with the prior art, the sound barrier structure has the highest insertion loss value within the center frequency range of 500 Hz to 1600 Hz, so that the sound wave absorption rate is highest, and the noise reduction effect is best.

The utility model relates to the technical field of bolts, and discloses a gravity fastening bolt which comprises a double-thread screw, a lower gasket, a fixing object, an upper gasket, a lower tightening nut and an upper tightening nut, clockwise rotation threads are arranged on the 2 / 3 portion of the lower portion of the outer wall of the double-thread screw, and anticlockwise rotation threads are arranged on the remaining portion of the upper end of the outer wall of the double-thread screw. The left part of the upper end of the outer wall of the double-thread screw is provided with a reverse rotation thread, the reverse rotation thread is meshed and provided with a lower tightening nut through a surface thread, and the double-thread screw is matched with the lower tightening nut and the upper tightening nut, so that in the rotating and attaching process, the upper tightening nut can be tightened. Due to the fact that the inclined clamping teeth are in the shape of an equilateral right triangle and incline from left to right, when the upper tightening nut is screwed in anticlockwise, the inclined edges of the clamping grooves are perfectly meshed with the inclined clamping teeth, the two nuts can resist against each other and cannot rotate, and the nuts are fixed more firmly through rotation under the influence of gravity or when a fixed object shakes.

Provided in the present disclosure are a rasterization method, and a processor, a system and an electronic device. The method comprises: on the basis of vertex coordinates of a triangular primitive to be rasterized and vertex coordinates of a bounding rectangle of the triangular primitive, determining vertex coordinates of a first rectangle, wherein the bounding rectangle is divided into the at least one first rectangle by means of a first tangent line and a second tangent line; and for some or all pixel points in each first rectangle, using the following method to determining whether the pixel points are within the triangular primitive: for pixel points located within a first rectangle of a first type, determining that the pixel points are outside the triangular primitive, and for the pixel points located within a first rectangle of a non-first type, on the basis of the distances between the pixel points and two right-angled edges of a target right triangle and on the basis of the proportionality principle of similar triangles, determining whether the pixel points are within the triangular primitive. Thus, complex operations are reduced, thereby greatly saving on hardware resources and reducing power consumption required during rasterization.

The utility model discloses a water body purification ecological floating island, and particularly relates to the technical field of ecological floating islands, the water body purification ecological floating island comprises a planting pot used for planting plants, a floating bed plate is arranged at the outer end of the planting pot, and the cross section of the floating bed plate is in a regular octagon shape; splicing assemblies used for connecting the multiple floating bed plates together are installed on the side edges of the floating bed plates. The splicing assembly comprises eight triangular floating plates, the eight triangular floating plates are movably connected with the eight side edges of the floating bed plate through hinges respectively, and the cross section of each triangular floating plate is in the shape of an equilateral right triangle. According to the utility model, the triangular floating plates at different positions are turned over downwards, so that the single ecological floating bed is square, all the triangular floating plates are turned over downwards, so that the single ecological floating bed is regular octagonal, the shapes and types of the single ecological floating bed are enriched, and the single ecological floating bed provided by the utility model can have different shapes after being spliced.

The utility model discloses a combined device supported by a unilateral formwork, which comprises a unilateral formwork system, a unilateral support system, an embedded part system and a support system, the unilateral support system is provided with an embedded part limiting support, and the embedded part system comprises a ground embedded rod, a connecting nut, an external connecting limiting rod, beam pressing section steel and a fixing part. The pressing beam profile steel is located on the upper side of the embedded part limiting support, and the top end of the externally-connected limiting rod penetrates through a reserved seam between the two pieces of pressing beam profile steel and is anchored through a fixing part connected to the surfaces of the pressing beam profile steel in a pressed mode. The support system comprises a ground support rod, a horizontal support rod and a support vertical buried rod, the front end of the ground support rod is supported at the far end of the right triangle frame, the rear end of the ground support rod is supported at the front side of the horizontal support rod, and the bottom of the support vertical buried rod is buried in the ground. A force transmission system is clear, structural loads are transmitted through the reliable force transmission system through reasonable connection and anchoring, the forming effect is good, repeated turnover use can be achieved, erecting and disassembling are convenient and fast, and labor cost is saved.

The invention belongs to the field of microwave wireless power transmission, and discloses a transparent linear circular polarization converter applied to microwave wireless energy transmission, which is composed of five layers of structures: a first layer is a cross patch with an inclined angle of 45 degrees, a cross recess is formed in the middle of the cross patch, and the whole body is composed of a cell with the external size of 1 * 1mm and the internal size of 0.95 * 0.95 mm; the wire width of all the copper wires is 0.05 mm; the second layer is a square substrate pet, the dielectric constant is 3.5, and the dielectric loss angle tangent is 0.03; the third layer is formed by splicing four isosceles right triangles, and the length of the right-angle side of each triangle is equal to half of the unit period; and the fourth layer and the fifth layer are completely the same as the second layer and the first layer. According to the invention, linear polarized waves can be effectively converted into circularly polarized waves in a microwave frequency band, high light transmittance can be maintained, and the device is suitable for being applied to intelligent windows, photovoltaic-microwave hybrid energy systems and other scenes.

The utility model discloses a polishing machine for mechanical parts, which relates to the technical field of polishing machinery and comprises a base, a polishing unit and a jacking unit are arranged on the base, the polishing unit comprises a stand column, an auxiliary wheel is arranged at one end of the stand column, a driving wheel is arranged at the other end of the stand column, a first driving motor is arranged on the driving wheel, and a tensioning wheel is arranged on the stand column. A polishing belt is wound on the auxiliary wheel, the tensioning wheel and the driving wheel, the jacking unit comprises a sliding seat and a jacking plate, two jacking pieces are arranged on the sliding seat, each jacking piece is of a right triangle structure, a pulley is arranged on each jacking piece in a sliding mode, the pulleys are installed on one side of the jacking plate, a guide mechanism is arranged between the jacking plate and the base, and an elastic mechanism is arranged on the other side of the jacking plate. The elastic mechanism is elastically and horizontally connected with a carrying plate; a threaded hole is formed in the jacking piece in a penetrating mode, a lead screw is arranged in the threaded hole, and a second driving motor is arranged at one end of the lead screw. According to the utility model, the elastic adjustment of the polishing distance is realized, the excessive polishing is prevented, and the polishing quality and efficiency are improved.

The invention provides a solid waste landfill positioning leakage detection device, which takes a matrix type detection network and an acquisition host as a core framework, detection units made of graphene or titanium alloy form a detection unit group according to a membrane upper-membrane lower-membrane corresponding principle, and a matrix distributed electrode pair structure is formed between a solid waste landfill area and a foundation area. The acquisition host applies excitation voltage to the detection unit groups, receives current signals, judges whether leakage occurs or not based on resistance parameters, and determines leakage positions through a three-point positioning principle (the detection unit groups with abnormal resistance parameters are used as vertexes of a right triangle, and leakage point coordinates are calculated in combination with preset Dx and Dy distance parameters and Ra, Rb, Rc and Rd resistance proportions); meanwhile, an anti-corrosion insulating layer (high-density polyethylene) is used for protecting the detection unit, a storage module is used for recording historical data, a communication module is in butt joint with an upper computer, and an alarm module is used for prompting the leakage position in real time, so that a complete leakage detection system is constructed.

The invention relates to the technical field of flow guide assemblies, and discloses a stop valve flow guide assembly which comprises a valve seat and a flow guide ring, the flow guide ring is arranged in a valve seat water inlet pipeline and composed of a fixed ring body and a movable ring body, the fixed ring body is fixed to the inner wall of the valve seat water inlet pipeline, and the movable ring body is arranged on the fixed ring body and can freely rotate. Delta wing plates are arranged on the inner side wall face of the movable ring in a circumferential array mode, the plane of each delta wing plate is in a right triangle shape, the joint of each delta wing plate and the movable ring is in large-radius fillet transition, the front edge of each delta wing plate is sharp, and the rear edge of each delta wing plate is thin and sharp.

The utility model discloses a sealing ring and a mould for manufacturing the sealing ring, and relates to the technical field of sealing products, the sealing ring comprises a sealing ring body, the section of the sealing ring body is in a right triangle shape, the outermost periphery of a fillet corresponding to the right angle of the right triangle is a sealing surface, and the half position of a second right-angle side is used as a reference surface. The sealing ring body is provided with an outer parting line and an inner parting line, and the inner parting line and the outer parting line are arranged on the upper side and the lower side of the datum plane respectively and avoid the sealing face. Wherein the die is provided with parting surfaces with height difference through an upper die plate and a lower die plate, so that an inner parting line and an outer parting line avoid a sealing surface. The sealing face of the sealing ring is smooth, the sealing ring can make close contact with a ball body when installed in the ball valve, the parting line is prevented from making contact with the ball body, and the sealing reliability of the valve is guaranteed.

The utility model discloses an electric small-sized corn thresher, which comprises a supporting seat, a corn thresher and a corn thresher, the threshing cylinder comprises an annular connecting cylinder and threshing teeth arranged at the top of the connecting cylinder, one end of the connecting cylinder is connected with the mounting hole in an inserted mode, the threshing teeth are fixed to the other end of the connecting cylinder, the threshing teeth are right triangle teeth, the right-angle sides of the threshing teeth are parallel to the axis of the connecting cylinder, and the multiple threshing teeth are arranged around the axis of the connecting cylinder at intervals; the motor is fixed on the supporting seat, and the output end of the motor is in transmission connection with the connecting cylinder; the feeding hopper is mounted on the supporting seat, the feeding hopper is erected above the threshing cylinder, and the axis of the feeding hopper is coaxial with the axis of the threshing cylinder.