54 results about "Middle plane" patented technology

The invention relates to the field of engineering machinery simulation, in particular to a median extraction method based on a normal vector, which comprises the following steps executed in sequence: S1, inputting a three-dimensional model, triangularizing each graph in the three-dimensional model, and obtaining all triangular patches; s2, calculating a normal vector of each triangular patch; s3, calculating a cosine value of an included angle between the normal vectors of the two adjacent triangular patches; s4, according to the cosine value obtained through calculation in the step S3, judging whether two adjacent triangular patches are in the same mid-plane area or not, performing mid-plane screening, and obtaining all mid-planes of the three-dimensional model; s5, calculating a thickness difference value of two adjacent middle surface patches; s6, according to the local thickness difference value, each middle surface of the three-dimensional model is grouped according to the thickness, and a grouping result is output; according to the mid-plane extraction method, manual intervention is not needed, the mid-plane of the three-dimensional model can be automatically identified and extracted, and the efficiency of the simulation modeling process is improved.

The invention relates to the technical field of supporting structures, aims to solve the problems that in the prior art, an out-of-plane supporting structure is diverse in form, free to machine, low in universality and low in standardization and assembly, and provides a movable modular assembly type out-of-plane supporting structure and a manufacturing and using method thereof. The supporting structure comprises a supporting stand column, a supporting inclined rod, a slotting bottom beam, a slotting connecting beam, a slotting expansion beam, a cover plate connecting piece and a lug plate connecting piece. The supporting stand columns are perpendicular to the slotting connecting beams, and the bottoms of the supporting stand columns are adjustably connected with the slotting connecting beams. The side face of the grooving connecting beam is connected with a grooving bottom beam and / or a grooving expansion beam. The slotting expansion beam is directly connected with the slotting connecting beam or is adjustably connected with the slotting connecting beam through a cover plate connecting piece; the movable modular assembly type out-of-plane supporting structure is divided into a heavy out-of-plane supporting structure, a middle out-of-plane supporting structure and a light out-of-plane supporting structure. According to the invention, standardized production and on-site rapid modular assembly can be realized.

The application discloses a nuclear power tunnel marine organism cleaning device and system, which comprises a movable main body device, a cleaning and gathering device and a conveying device arranged on the main body device respectively, and comprises profiled side plates arranged on both sides of the front end of the main body device. The bottom of the profiled side plate is used for being attached to the inner wall of the tunnel, the profiled side plate is used for cleaning marine organisms on the inner wall of the tunnel in a flat pushing mode under the advancement of the main body device, and the marine organisms peeled off during the cleaning are gathered on the middle plane of the bottom of the tunnel. The collecting device is arranged at the rear end between the two profiled side plates, and is used for collecting the marine organisms gathered on the middle plane of the bottom of the tunnel to the conveying device under the advancement of the main body device.

The utility model relates to a connecting structure of a split face of a double-shell multi-stage pump, which comprises an inner shell and an outer cylinder sleeved on the outer side of the inner shell, the outer cylinder is provided with an inlet flange and an outlet flange, the outer cylinder and a pump cover jointly form a sealing cavity, and the inner shell is sealed in the sealing cavity; the rotor part is arranged in the inner shell and forms a flow passage part of the pump together with the transition flow channel of the inner shell; the inner shell comprises an upper shell body and a lower shell body, and the upper shell body and the lower shell body are arranged in a central symmetry mode. An axially split flange face is arranged between the upper shell and the lower shell, and connecting devices are arranged on the two sides of the axially split flange face; the four corners of the middle opening face are each provided with a limiting mechanism. An inner shell anti-rotation positioning block is arranged on the end face of the high-pressure side of the inner shell, and an inner shell circumferential positioning block is arranged on the middle plane of the upper shell and the middle plane of the lower shell. The radial size of the inner shell is reduced, so that the radial size of the whole pump is small, and the transportation and installation space is reduced; the weight of the pump body and the cost are reduced. According to the utility model, the connection mode of the split surface reduces the casting difficulty of the split surface of the inner shell.

The invention provides a reconfigurable parallel mechanism capable of switching joint rehabilitation modes and a design method thereof.The reconfigurable parallel mechanism comprises a first motion branch chain, a second motion branch chain, a third motion branch chain, a movable platform and a fixed platform, and the movable platform is connected with the fixed platform through the first motion branch chain, the second motion branch chain and the third motion branch chain; the first motion branch chain and the second motion branch chain are both of a CRC structure, the third motion branch chain is of a CCC structure, and motion pairs, fixedly connected with the movable platform and the fixed platform, of all the motion branch chains are vertically symmetrical along the middle plane. By means of rapid switching of a two-rotation and one-movement ankle joint rehabilitation mode and a two-movement and one-rotation knee joint rehabilitation mode, configuration reconfiguration of the parallel mechanism is achieved, operation is simple, the motion trail of the reconfigurable parallel mechanism coincides with the joint motion axis, and the parallel mechanism has the advantages of being high in rigidity and precision.

The invention provides an analogy simplified analysis method and device for a worm grinding wheel grinding gear and a medium, belongs to the field of grinding machining, deduces and calculates a single-time grinding material removal area of a specific tooth surface through analysis of movement and contact behaviors on a middle plane, and calculates a single-time grinding material removal area of the specific tooth surface on the basis of a material removal rate equivalent principle. The worm grinding wheel gear grinding process is equivalently simplified into plane grinding. According to the method, equivalence of movement and contact behaviors in the grinding process is considered, grinding force and thermal effect equivalent analysis is achieved based on the material removal rate equivalent principle, and obtained equivalent plane grinding process parameters directly reflect the grinding behavior, grinding force and thermal characteristics of a worm grinding wheel grinding gear; the complex worm grinding wheel gear grinding process can be subjected to equivalent simplified research on a plane grinding platform, the experiment cost is reduced, experiment result analysis is simplified, and optimization analysis of worm grinding wheel gear grinding process parameters is facilitated.

A B-rep processing method for performing a structural simulation of a mechanical part is disclosed. The method includes providing a mid-plane of a B-rep representation of the part. Each mid-plane represents a thin portion. The method includes calculating a bond line corresponding to a respective bond of the respective mid-plane based on a boundary line of the respective mid-plane. The method includes determining one or more groups. Each group contains an end of the bond wire to be connected. One or more groups are determined by identifying connection boundary lines corresponding to the bond lines. The method includes, for each determined set of ends, determining a plurality of junction points. The multi-junction point is a connecting point of the tail end. The method includes connecting the bond wire using the determined multiple bond points. The method includes connecting a mid-plane to a connected bond wire.

The invention relates to the technical field of grinding equipment, in particular to a grinding device for bearing roller machining, which comprises a rack and a cylindrical grinding wheel, the working surface of the cylindrical grinding wheel is a spherical cambered surface, and the grinding device further comprises a rotating frame, a first rotating shaft, a second rotating shaft, a first rotating shaft and a second rotating shaft, the center line of the cylindrical grinding wheel, the center line of the roller body and the first axis are vertically arranged in pairs; the plane where the first axis and the center line of the cylindrical grinding wheel are located is a middle face, the swing amplitude of the rotating frame around the first axis is symmetrically distributed on the two sides of the middle face, and the roller body exceeds the edge of the cylindrical grinding wheel along with swing. The center of a base circle of the roller body coincides with the center of sphere of the spherical cambered surface, and the first axis passes through the center of the base circle of the roller body. In the swinging process of the rotating frame, the roller body passes through the whole spherical cambered surface, so that the working surface of the cylindrical grinding wheel is uniformly abraded.

The utility model discloses an anti-deformation floor deformation joint cover plate made of rigid materials, which comprises a deformation joint cover plate erected between two building bodies, and the deformation joint cover plate comprises a fixed plate, a tooth-shaped plate and a movable plate; the fixing plate is symmetrically designed and fixed to a building through fixing bolts, a slope is arranged at one end of the fixing plate, a sliding groove is formed in the other end of the fixing plate in a downward extending mode, and tooth-shaped grooves equal in interval and length are formed in the middle of the fixing plate. The tooth-shaped plate is symmetrically designed, one end of the tooth-shaped plate is a tooth-shaped end matched with the middle part of the fixed plate, and the other end of the tooth-shaped plate is a connecting section connected with the movable plate; the movable plate is in the middle plane design, the two ends of the movable plate extend downwards to be provided with sliding ends and are arranged in the sliding grooves in a sliding mode, and grooves used in cooperation with the connecting sections are formed in the connecting positions of the plane and the sliding ends. Through the arrangement of the fixed plate, the tooth-shaped plate and the movable plate, under the bearing condition, the function of adapting to deformation joint changes is achieved, and deformation and damage of the cover plate are prevented.

The utility model discloses a belt conveyor driving connecting device. The technical problem that a motor of an existing belt conveyor driving device cannot be coaxially connected with a coupler and a speed reducer during replacement is solved. The L-shaped seat body is provided with a bottom plate and a vertical plate, the two sliding grooves are formed in the bottom plate, the sliding pieces are correspondingly embedded in the sliding grooves in a sliding mode, and the seat plate correspondingly slides along with the sliding pieces. The sliding piece comprises two sliding blocks which are embedded in the sliding grooves in a sliding mode respectively, guide columns which are embedded in the strip-shaped sliding holes in a sliding mode are vertically arranged at the tops of the sliding blocks, a connecting plate is fixedly arranged between the two sliding blocks, and an adjusting stud is vertically arranged in the middle of the connecting plate; an adjusting sleeve and a guide sleeve are respectively arranged at the corresponding positions of the bottom of the seat plate; the adjusting stud is in threaded connection with an adjusting nut; a displacement screw is arranged along the symmetrical middle face of the two sliding grooves, and a displacement sleeve is arranged at the bottom of the connecting plate. The device has the advantages of being high in adaptability, convenient to adjust, stable in supporting and the like.

The present invention belongs to the field of the processing of the return device of a centrifugal fan, and particularly relates to a coaxial alignment method for the return device of a centrifugal fan, comprising the following steps: Step 1: Make the middle plane of the coaxial positioning table closely abut against the vertical workbench of the radial drilling machine; Step 2: Make the middle planes of the upper disc semi-circle and the lower disc semi-circle also closely abut against the vertical workbench and stack them up and down; Step 3: Position the upper processing surface and the lower processing surface by using the coaxial positioning table; Step 4: At the bottom edge of the lower disc semi-circle, fix it with a pressing plate, a fastening pad and a fastener; Step 5: Use the radial drilling machine to process fixing holes at the designated positions on the upper disc semi-circle, penetrate the fixing holes through the upper disc semi-circle and the lower disc semi-circle, and fix them with a bolt group; Step 6: Then repeat Steps 1 to 5 to also fix the other half of the upper disc semi-circle and the lower disc semi-circle with a bolt group; Step 7: Fix and clamp the two groups of upper and lower disc semi-circles on a lathe, and machine the upper processing surface and the lower processing surface on the lathe.

The present application relates to the technical field of freight car frame, and proposes a truss type highway-railway dual-purpose freight car frame, which comprises a three-dimensional truss, a highway walking system suspension and a traction frame. The three-dimensional truss comprises a middle plane truss, side plane trusses and a plurality of transverse connecting beams. Each of the side plane trusses and the middle plane truss has two. The middle plane truss is connected by the transverse connecting beams. The two side plane trusses are respectively connected to the two sides of the middle plane truss. The bottom of each of the two side plane trusses has a plurality of arc-shaped grooves. The side plane truss further has a fixing part for fixing a railway walking system. Through the above technical solution, the problem of reducing the weight of the freight car frame and realizing highway-railway dual-purpose is solved.

The application discloses a vertical scallion processing device, which comprises a whole base frame including a middle plane A and an upper plane B; a center rotating shaft rotating assembly is arranged on the plane A, and a plurality of acrylic cylinders for placing scallions are arranged on the center rotating shaft rotating assembly; a cutter assembly is arranged on the plane A and the plane B, and is used for cutting two ends of the scallions; a collecting assembly is used for cleaning and collecting the cut scallion heads; a rotating telescopic brush assembly is used for brushing away the scallion waste skins; a packaging assembly is arranged below the plane A, and is used for packaging the scallions; a pressure sensor weighing assembly is arranged below the plane A, and is used for clamping and weighing the packaged scallions; a labeling assembly is arranged below the plane A, and is used for labeling the weighed and packaged scallions; and a sorting assembly is arranged below the pressure sensor weighing assembly, and is used for classifying and placing the labeled scallions. The application solves the problems that the current manual scallion processing procedure is complicated, and the current scallion processing device has single functions and too many manual operation links.

The present invention provides an output lever and its assembly method, a mechanical cam shed forming mechanism, and a loom. The output lever has cam follower rollers and includes two follower rollers connected to a body. The body defines a middle plane and includes a central portion having two opposite surfaces and two attachment portions, the attachment portions being connected to the respective follower rollers by respective attachment means. The attachment means includes inner and outer fasteners each including one or more flanges. The flanges are each formed by a plate and are supported against each other in parallel planes. Each follower roller is U-shapedly mounted between the inner and outer fasteners such that the contact surfaces of the two follower rollers are on opposite sides of the middle plane. The first follower roller is attached to a first attachment portion of the two attachment portions including two opposite surfaces by a first attachment means, the opposite surfaces being connected by a flange, separated by a distance equal to the thickness of the central portion, and each coplanar with a respective surface of the central portion. The contact surface of the first follower roller is oppositely positioned with respect to the edge of the first attachment portion.

The utility model provides a sheet bar, along the length direction of the sheet bar, the two ends of the sheet bar are flow guide areas, the middle part of the sheet bar is a main heat exchange area, the flow guide areas are provided with medium inlets and outlets and flow guide ribs enabling media to be uniformly distributed in the width direction of the sheet bar, and the main heat exchange area is provided with a plurality of heat exchange units. The heat exchange units are arranged in an array mode in the length direction and the width direction of the sheet bar, each heat exchange unit is provided with a plurality of protruding tops and a plurality of concave bottoms, the tops and the bottoms are connected through side faces, the tops and the bottoms are welding parts used for being welded to adjacent sheet bars, and the welding parts are welded to the adjacent sheet bars. Every two adjacent bottoms are connected through a slope-shaped connecting part, a horizontally-arranged middle plane is arranged on each slope-shaped connecting part, and the middle planes are connected with the side faces of the heat exchange units through transition curved surfaces. The utility model further provides a heat exchanger which comprises a heat exchange core body, the heat exchange core body comprises a plurality of plates, and the plates are sequentially welded in the set direction.

The invention relates to the field of gantry crane construction, and discloses a manufacturing process of a rigid leg of a gantry crane, which comprises the following steps: step 1, manufacturing a fishtail section in a segmented manner, A1, manufacturing a fishtail bottom plane in a segmented manner, A2, assembling and welding a partition plate and a T row, A3, hoisting a bottom plate and a side plate plane in a segmented manner, A4, hoisting a top middle plane in a segmented manner, A5, assembling and welding a lug plate assembly, step 2, manufacturing a rigid leg vertical segment, b1, manufacturing a plane jig frame; the method comprises the following steps of S1, rigid leg assembling, B2, rigid leg bottom plane segmented positioning, B3, side plane segmented hoisting, B4, other side plane segmented hoisting, B5, top plane segmented hoisting and III, rigid leg assembling, and C1, the assembling sequence is as follows: firstly, rigid leg vertical segments G2 and G3 are assembled into G23, and rigid leg vertical segments G4 and G5 are assembled into G45; then, the three large segments G1, G23 and G45 of the fishtail segment are folded, and the segments are positioned through flat cars. The welding precision is improved, and the overall construction cost is reduced.

A connection device for a pipe (4) provided with ribs on the circumference has a pipe receptacle (1) with a receptacle opening for accommodating one end of the pipe (4) and at least one locking element (3) for fixing the pipe (4) in the pipe receptacle (1). The pipe receptacle (1) has a longitudinal middle plane (M) which runs through the receptacle opening. The locking element (3) has a first portion (S1) which allows movement of at least a portion of the locking element relative to the pipe receptacle (1) and a second portion (S2) which is configured for engaging into a corrugation groove (41) of the pipe (4) provided with ribs on the circumference. The first portion (S1) is closer to the longitudinal middle plane (M) than the second portion (S2) at least when the pipe (4) is introduced and fixed. The connection device according to the invention enables simple, sealed and secure fixing of the pipe.

The embodiment of the utility model discloses an electronic device, which is characterized in that a first branch and a second branch which extend towards different sides of a middle plane are arranged on a main supporting piece provided with a display screen, a first sound channel loudspeaker is arranged on the first branch, and a second sound channel loudspeaker is arranged on the second branch. A hardware structure capable of playing left channel and right channel audio respectively is provided. The control circuit can control the first sound channel loudspeaker to play left sound channel audio and control the second sound channel loudspeaker to play right sound channel audio, so that independent output of the left sound channel and the right sound channel can be realized, and sound field playback of the electronic equipment has good stereoscopic impression.

The present invention discloses a segmented machining method for a large four-lobe shell workpiece, which includes rough milling the horizontal middle planes of four sub-shells respectively and milling the reference plane; fixing the two sub-shells on the same side of the vertical middle plane in a circular manner and finishing the vertical middle plane and the vertical end face; assembling and fixing the two sub-shells on the same side of the horizontal middle plane and finishing the horizontal middle plane, the bearing seat, the vertical end face and the reference inner hole of the vertical end face; clamping and fixing the two sub-shells on the same side of the vertical middle plane on the workbench respectively and precision turning the vertical end face, the inner hole and the inner hole shoulder face; fixing the two sub-shells on the lower side of the horizontal middle plane by closing them together left and right, assembling the four sub-shells with the fixed seats respectively, hoisting the two sub-shells on the upper side of the horizontal middle plane to the upper part of the corresponding sub-shells respectively and fixing them in a circular manner. The present invention effectively reduces the machining height and makes full use of the existing machining equipment.

Water closet with a bowl (1) and a rinsing water supply (5, 6) which ends in an inlet opening (7) into the bowl, wherein the bowl's inner shape (1) has a first vertical mid-plane (M1), wherein the vertical mid-plane (M1) is, in ordinary installation in front of a straight wall, perpendicular to this mounting wall and, in the installed state of the toilet, conceptually divides a water drain and a user sitting on the toilet in the middle, i.e., is perpendicular to a second vertical mid-plane (M2) which divides the toilet into a front and a rear area, wherein a purely top-side supply of rinsing water into the bowl is provided, i.e. without an inlet opening below a third horizontal median plane (M3) of the bowl shape with respect to its total height including the siphon, i.e. a median plane (M3) running horizontally and otherwise through the center of the entire vertical extent of the bowl's inner shape including the siphon, and exactly one inlet opening (7) is provided above the third median plane (M3) of the bowl's inner shape, wherein the rinsing water supply (5, 6) and the inlet opening (7) are designed such that the rinsing water flows into the bowl (1) with a predominantly tangential velocity component with respect to the bowl's inner shape and undergoes a rotating motion in the bowl (1), wherein the bowl's inner shape has no rim, i.e. no circumferential channel for rinsing water with downward-facing inlet openings for the flow of rinsing water into the bowl (1), characterized by that the bowl's internal shape (1) has an asymmetrical form with respect to the first vertical median plane (M1), even apart from any flushing water inlet openings, such that the bowl's internal shape defines a flow path for the flushing water between an outer concave edge (8) and an inner convex edge (9), with respect to vertical sections through the bowl's internal shape to the center of a water level (WS) in a siphon of the bowl (1), which flow path is continuous with respect to the vertical sections and is inclined relatively shallowly inwards in relation to the rest of the bowl's internal shape and thereby descends monotonically around the water level (WS) and is thus lower on one side of the median plane (M1) than on the other and thus superimposes a bowl-shaped downward movement on the rotating flushing water movement,The bowl's inner shape also adds a downward vertical movement component. and by the fact that the water closet has a static siphon (2).

A cable stripping device comprises a rack, a lifting frame installed on the rack in an up-down sliding mode, a first height adjusting structure installed between the rack and the lifting frame, an upper rotating shaft rotationally installed on the lifting frame, an upper V-shaped groove wheel fixedly installed on the upper rotating shaft, and a lower rotating shaft rotationally installed on the rack and located below the lifting frame. An upper V-shaped groove wheel is fixedly installed on the upper rotating shaft, a lower V-shaped groove wheel is fixedly installed on the lower rotating shaft, the upper V-shaped groove wheel and the lower V-shaped groove wheel are arranged in an up-down opposite mode, a cutter is installed on the portion, located on the front side of the lifting frame, of the rack in an up-down sliding mode, the cutter is located on the vertical split face of the upper V-shaped groove wheel and the lower V-shaped groove wheel, and a second height adjusting structure is installed between the rack and the cutter. The cable stripping device can be used for stripping cables with different diameters and different insulation skin thicknesses, and is wide in application range.

An electric heater (1) for a vehicle, suitable for heating a liquid passing through said heater, comprising:-a body (2) made of a die-cast metal material; -at least one resistor (3) bonded at least partially along a first median plane (X) of the body (2); an inlet portion (10) and an outlet portion (11) for the liquid, both arranged on the same side of the heater; -a first flow path (4) for the liquid, from an inlet portion (10) to an outlet portion (11), formed on a first face of said body (2), arranged on a first side of said first median plane (X); -a second flow path (5) for the liquid, from the inlet portion (10) to the outlet portion (11), formed on a second face of the body (2), arranged on a second side of the first median plane (X) opposite to the first side; wherein the first flow path (4) and the second flow path (5) are arranged symmetrically with respect to the first median plane (X) and with respect to a second median plane (Y) of the body (2) perpendicular to the first median plane (X).

The utility model relates to a thin-wall shell forming die which comprises an upper die and a lower die, a containing groove is formed in the middle of the upper side of the lower die, a lower die core is arranged in the containing groove, a lower middle plane is arranged on the upper side of the lower die core, lower inclined planes are arranged at the two ends of the lower middle plane, and lower outer planes are arranged on the outer sides of the lower inclined planes. A lower forming groove is formed in the position of the lower inclined face, a protruding mold core is arranged in the middle of the forming groove, an upper mold core is arranged on the lower side of the upper mold, an upper middle plane, an upper inclined face and an upper outer plane are correspondingly arranged on the lower side face of the upper mold core, an upper forming groove corresponding to the protruding mold core is formed in the upper inclined face of the upper mold core, and a lower forming groove corresponding to the protruding mold core is formed in the lower inclined face of the upper mold core. The lower forming groove and the protruding mold core can form a certain inclination in the vertical direction, the mold opening process after injection molding is facilitated, at the moment, the arranged lower inclined face can also be used as a positioning structure when the upper mold and the lower mold are closed so as to improve the alignment degree when the upper mold and the lower mold are closed, and therefore the product forming precision is improved.

The light reflecting device comprises a support, a plane mirror set is arranged on the support, the plane mirror set is rotatably connected to the support, and the plane mirror set comprises a middle plane mirror, a left plane mirror and a right plane mirror; the middle plane mirror is rotationally connected to the support, the left plane mirror and the right plane mirror are arranged on the two sides of the middle plane mirror and are parallel to each other, a consumable projection area is arranged on the support, and an optical signal receiver is arranged on the side, away from the consumable projection area, of the support. The device has the advantages that the levelness and positioning accuracy of the light reflecting device are guaranteed, a light source penetrates through the PS diffusion plate, a light spot or a line light source is diffused into a soft and uniform area light source, the area light source projects the side faces and the bottoms of the cutter, the wire guide nozzle and the chopper, and the reflector reflects the projection to the light signal receiver through multiple reflections. The relative gap and height of the cutter, the wire mouth and the chopper can be clearly quantified by combining the images of the cutter, the wire mouth and the chopper with the scale on the screen, so that the installation positions of the cutter, the wire mouth and the chopper are uniform, accurate and visual.

The invention discloses a rapid registration method and a registration positioning device for aircraft assembly, and the method comprises the steps: building a three-dimensional stl model of an aircraft part, and taking a crossed rib on a frame beam of the aircraft part as a virtual-real matching feature point; a plane equation R11 and a plane equation RR2 of the two ribs are obtained respectively, and then a middle plane equation RMid1 and a middle plane equation RMid2 of the two ribs are obtained; and combining the plane equations RMid1 and RMid2 with the top plane equation RTop, and calculating to obtain a plane intersection point as a theoretical registration coordinate point F (x, y, z). And finally, according to the thickness of the real object registration point device, adjusting the offset to obtain an aircraft assembly registration point Final (x + s * a, y + s * b and z + s * c) so as to carry out registration assembly. The method solves the problems that in the prior art, the theoretical coordinates of the registration points cannot be rapidly obtained, the real object registration points are not accurate enough to place, and the adaptability is not high, and has good practicability.

The utility model provides a semi-hard magnetic core which comprises a rectangular magnetic core body, two coil grooves symmetrical about the middle plane of the magnetic core body are formed in the magnetic core body, and the portion, between the two coil grooves, of the magnetic core body is a magnetic core middle part; the flat arrangement of the rectangle determines that the magnetic core can be applied to a compact space, the height of the magnetic core body determines the height of the magnetic core body in the application space, and the magnetic core is particularly suitable for designing a horizontal driving mechanism in a molded case switch; preferably, the magnetic core bodies at the two ends can be clamped in the coil grooves, so that batch connection is achieved, waste of raw materials during machining is avoided, and compared with a cylindrical mechanism, the rectangular structure is more suitable for uniform heat treatment after flattening treatment, and therefore the heat treatment cost is reduced.

A furniture drive for moving a furniture front relative a furniture carcass includes a base body to be fixed to the furniture carcass, and an actuating arm pivotally supported on the base body about at least one first pivoting axis in a mounted condition. The actuating arm includes a plurality of levers hingedly connected to one another, and at least two of the levers of the actuating arm are configured to be releasably connected to the base body of the furniture drive. At least the levers of the actuating arm are symmetrically arranged with respect to a notional middle plane of the actuating arm.

The utility model discloses a steel-plastic composite positioning pin and a large-caliber steel-plastic composite electric melting sleeve pipe fitting, and relates to the field of pipe fitting manufacturing, the steel-plastic composite positioning pin comprises a positioning pin body, the positioning pin body comprises an inner core fixing piece and an outer surface plastic layer and is connected to a steel framework through threads, and the inner core fixing piece is made of metal materials; the outer surface plastic layer is made of the same material as a product, the locating pin is annularly arranged on the middle plane of the steel-plastic electric smelting sleeve pipe fitting and matched with a production mold, so that the freedom degree of a framework in the pipe fitting in all directions is restrained, and the locating problem of the embedded steel framework in the manufacturing process of the large-diameter steel-plastic composite electric smelting sleeve pipe fitting is effectively solved; the production efficiency and quality of pipe fittings are improved; and meanwhile, the protruding positioning pin on the central surface of the pipe provides a convenient and rapid balance hoisting point for subsequent installation and hoisting, and the position height of the pipe and the position height of the central line of the steel-plastic composite pipe to be connected can be ensured to be consistent, so that the installation efficiency is improved, and the connection quality of the whole pipeline is improved.

The invention discloses a coplanar origami honeycomb structure which is formed by in-plane and / or out-of-plane mirror images of basic origami units, and each basic origami unit is formed by splicing four folding subunits; each folding subunit comprises an upper plane, a lower plane, two middle planes and five inclined planes; the five inclined planes are two first inclined planes for connecting the upper plane and the two middle planes, two second inclined planes for connecting the lower plane and the two middle planes, and a third inclined plane for connecting the two first inclined planes and the two second inclined planes; the four folding subunits are spliced at the upper plane position to form an upper platform, and the four folding subunits are spliced at the middle plane position to form four middle platforms. An upper coplanar platform area and a lower coplanar platform area which are formed after a paper folding structure is folded are fully utilized, face-to-face connection between all layers of structures is achieved, the assembling complexity is reduced, the connection strength is improved, meanwhile, geometric parameters can be flexibly set and optimized according to specific application requirements in the initial design stage, and the design efficiency is improved. And the method has good engineering adaptability and application flexibility.

Cleaning device (40) for filters (32, 34) of filtering devices (10, 110) for a plastic material in the molten state, comprising a rotary main body (42) provided with scraping elements (48, 50) that cooperate with the filtering surfaces (32A, 34A) of two filters (32, 34) facing each other. On the two opposite sides (44, 46) of said main body (42) there are channels (60A, 60B, 60C, 70A, 70B, 70C) suited to receive the impurities collected by said scraping elements (48, 50) and to convey them into a discharge chamber (68), towards which they converge tangentially, and wherein the discharge openings (66) of said channels are made on a side of said discharge chamber (68) and arranged on the middle plane (M) of the main body (42).