129results about How to "Easy to make and assemble" patented technology

The invention discloses a flexible ecological floating bed relating to a plant growth carrier. The invention provides a flexible ecological floating bed which has better landscape effect, has the advantages of small volume, light weight, no fixed frame, large buoyancy and the like, can be applied to lakes and riverways on large area, can be applied on ecological comprehensive treatment of water areas, such as salt-water inner bays, lagoons and the like. The flexible ecological floating bed is provided with a bed body and cultivated plant, wherein the bed body is provided with an upper-layer film coating woven fabric and a lower-layer film coating woven fabric; double layers of air bubble films are arranged between the upper-layer film coating woven fabric and the lower-layer film coating woven fabric; the periphery of the bed body is provided with a floating body bag along the edge; two side bags of the floating body bag are respectively provided with a floating bottle; bags on the head and the tail of the floating body bag are inserted with bamboo poles for shaping; the bed body is provided with a cultivation hole (or a field planting hole) for cultivating plant; plants are cultivated in the cultivation hole; and the periphery of the bed body is provided with fixing rings.

The invention relates to a machine for automatically removing joints of a bamboo frame board and drilling holes in the bamboo frame board. The machine comprises a worktable, a lifting table, a lifting table rotation mechanism, drill rods, a drill rod transmission mechanism and a machined part transmission mechanism, wherein a machined part feeding opening is formed in one side of the worktable; an opening and closing door is formed in the other side of the worktable; a joint removing cutter is arranged in the machined part feeding opening of the worktable; the lifting table is arranged above the worktable and located between the machined part feeding opening and the opening and closing door; the lifting table transmission mechanism is arranged at the bottom of an inner cavity of the worktable; the lifting table transmission mechanism is connected with the lifting table; a plurality of uniformly-arranged drill rods are arranged on the lifting table; the drill rod is vertical and downward and directly faces a table top of the worktable; the drill rod transmission mechanism is arranged on the lifting table; the drill rod transmission mechanism is connected with the drill rods; the machined part transmission mechanism is arranged on the table top of the worktable; the machined part transmission mechanism, the machined part feeding opening and the opening and closing door are arranged on the same straight line; the machined part transmission mechanism is arranged under the drill rods. When the machine is used, the working efficiency can be improved; meanwhile, groups of holes can be conveniently formed.

The invention belongs to the field of robots, and discloses a multi-legged walking robot capable of flexibly steering and advancing. The multi-legged walking robot comprises a torso unit and a plurality of walking leg units. Each walking leg unit comprise a first support frame, a first motor driving module, a second support frame, a passive foot module and two leg propulsion modules, and each legpropulsion module comprises a second motor driving module, a thigh and a shank; and the passive foot module comprises a passive support foot and a passive rotating joint, the passive support foot is fixedly mounted on the passive rotating joint, and the passive rotating joint is rotatably mounted at the lower end of one of the shanks. The first motor driving modules of the robot can drive the walking leg units to rotate integrally, to change the propulsion plane, in-situ 360-degree flexible steering of the robot can be realized by combining the passive rotating joints and the support feet, therequired torque for steering is extremely small and only joint friction needs to be overcome, and the leg propulsion modules can fulfill the walking propulsion function of the robot.

A heat exchanger of plate type with three channels is featured as including a numbers of heat transfer plates being laminated together, setting distribution equalizer separately at the second inlet and the third inlet between the first layer of heat transfer plate and the second layer of heat transfer plate as well as setting distribution equalizer separately at the second inlet and the third inlet between the third layer and the fourth layer of heat transfer plates and so forth. The service efficiency of said heat exchanger is raised obviously since distribution equalizer is installed at inlet between layers of heat transfer plate.

The invention, which relates to the technical field of virus detection, discloses a colloidal gold test strip for detecting nervous necrosis virus of a grouper and a preparation method thereof. The colloidal gold test strip comprises a bottom plate, a sample pad, a combination pad, a nitrocellulose membrane and an absorption pad, wherein the sample pad, the combination pad, the nitrocellulose membrane and the absorption pad are fixed on the bottom plate in a lap joint manner successively. The combination pad is coated with a gold-labeled probe. The nitrocellulose membrane is provided with a detection line and a quality control line; the detection line is fixedly provided with a capture probe; and the quality control line is fixedly provided with a quality control probe. The invention alsodiscloses a method for detecting the grouper nervous necrosis virus by adopting the colloidal gold test strip. According to the invention, the colloidal gold test strip is prepared based on the principle of combining the nucleic acid aptamer with the lateral flow biosensor and colloidal gold color development and has advantages of high sensitivity and specificity, simple assembling, and high portability; and the detection method operation is simple. The grouper nervous necrosis virus can be efficiently, accurately and quickly detected on site in real time.

The invention provides a mechanical spiral door bolt mechanism for a safe box and cabinet. The mechanical spiral door bolt mechanism is formed in a way that a gear which is provided with a pulling sheet and is arranged on the handle is engaged with a sliding rack, the sliding rack is matched with a main shaft seat provided with a main shaft, the rack is matched with the rack seat and the pulling sheet, the rack is engaged with the main shaft, the sliding rack is fixedly arranged on a connecting rod, and the handle, the main shaft seat and the rack seat are fixedly arranged on a door plate. The middle links and excessive parts are reduced and omitted, the structure is compact, the size is small, driving and transmission elements are directly and fixedly arranged on the handle, the main shaft seat and the rack seat of the door plate, the transmission interference is avoided, and all parts can be easily manufactured and assembled. The gear and the sliding rack are engaged, the main shaft is driven to move through the connecting rod, the gear drives the double-groove rack to move through the pulling sheet, inclined teeth arranged on the double-groove rack are engaged with the long rack arranged on the main shaft for driving the main shaft to rotate, the connection between the main shaft and a screw sleeve fixedly arranged on the side door frame is firm and reliable, the prying is not easy, the anti-theft performance is good, and safety and reliability in use are realized. The mechanism is arranged on the handle seat and is arranged around the handle seat, the handle is directly held for operation, middle parts do not exist, and the operation is comfortable, easy and labor-saving.

The invention discloses an FRP component with ribs. The FRP component with the ribs comprises FRP basic splicing blocks, wherein each FRP basic splicing block is composed of an FRP basic base plate on the lower portion and an FRP basic longitudinal slab rib arranged on the top of the FRP basic base plate, a convex key and / or a concave key is additionally arranged on the side wall of each FRP basic base plate, and the FRP basic splicing blocks are connected in an interlocking mode to form the FRP component with the ribs. The FRP component with the ribs is easy and convenient to manufacture and splice, the construction speed is high, the size of the FRP component is not limited by the size of the FRP basic splicing blocks, and splicing is flexibly carried out according to the requirement for the actual size of the FRP component with the ribs. A construction method for combining the FRP component and concrete to form a bridge deck comprises the following steps that the FRP basic splicing blocks provided with the convex keys and / or the concave keys and transverse through holes are manufactured; the FRP basic splicing blocks are spliced; transverse rebars penetrating through the holes are arranged, and the surface course concrete is poured. The formed FRP and concrete combination bridge deck integrates the advantages, of being high in compressive strength and low in cost, of the concrete and the advantages, of being high in tensile strength and high in duration performance, of FRP, and the whole FRP component is excellent in structural performance and considerable in economic performance.

The invention relates to a speed reduction driving wheel and a robot with the same, and belongs to the technical field of robots. The speed reduction driving wheel comprises an omnibearing wheel body and a speed reducer, wherein the omnibearing wheel body is provided with an installation hole, and the speed reducer is arranged in the installation hole; the speed reducer comprises a first shell which is rotationally connected with the omnibearing wheel body; and the output end of the speed reducer is fixedly connected with the omnibearing wheel body. The speed reducer is arranged in the wheel body, and the omnibearing wheel body and the internal speed reducer both adopt a component-based power and free structure, so that the speed reduction driving wheel has the advantages of being easy and convenient to manufacture and assemble, compact in structure, adjustable in speed reduction ratio, high in bearing and friction driving capacity, stable in movement and good in controllability. The robot with the speed reduction driving wheel comprises a robot body and the speed reduction driving wheel. The robot is provided with the speed reduction driving wheel, is simple in structure, is convenient to assemble, can conduct translational motion and rotate simultaneously in any direction in a two-dimensional plane, and is suitable for occasions with a narrow space or requiring high maneuverability of the robot.

The invention relates to an ultra-thinning method of a flat liquid crystal TV and a flat liquid crystal TV structure. The flat liquid crystal TV structure comprises a front shell (1), a liquid crystal screen (2), a rear panel (3), a power panel (12), a mainboard (11) and a base (20) and is characterized in that the rear board (3) is provided with a groove (19) which is provided with a screw hole (13) in a wall-hanging manner and used for connecting a support (5) on the base (20), and the power panel (12) and the mainboard (11) are arranged in the base (20); and the support (5) is positioned on a base lower shell (7) of the base (20) through a clamping mechanism (8), and the power panel (12) and the mainboard (11) which are arranged in the base (20) are electrically connected with a printed display circuit on the liquid crystal screen (2) by passing a flat cable through a through hole (14) on a support shell (4) covering the lower part of the support (5). According to the ultra-thinning method and the flat liquid crystal TV structure, the life of the liquid crystal screen can be prolonged, the stability of the liquid crystal screen can be improved, the thickness of the flat liquid crystal TV can be greatly thinned, and the liquid crystal TV is thinner.

The invention discloses an automatic repeating poking mechanism, which comprises a pin shooting base, a dial, a top pressing mechanism and a pressing and poking mechanism. The pin shooting base is provided with a sliding magazine groove, a pin shooting hole and a positioning surface; the dial can rotate relative to the pin shooting base; an outer rotating surface of the dial is provided with a plurality of annularly arranged dial pawls; the dial is provided with a front surface and a back surface facing the positioning surface; the back surface is provided with annularly arranged aligning grooves in the same number as the dial pawls; the top pressing mechanism comprises a first spring positioned inside the pin shooting base and a positioning ball capable of sliding relative to the pin shooting base; the first spring presses the positioning ball to make the positioning ball partially extend out of the positioning surface so as to be matched with the aligning grooves; the pressing and poking mechanism comprises a fixed base fixedly connected to a cylinder, a pressing and poking piece rotatably connected with the fixed base, and a second spring arranged between the fixed base and the pressing and poking piece; and the pressing and poking piece can act on the dial. The invention has the advantages that: by combining the positioning function of the positioning ball and the pressing and poking function of the pressing and poking mechanism, a phenomenon of automatic repeating blockage can be effectively avoided, and automatic jump repeating is avoided.

The invention relates to a lens driving device applying electromagnetic thrust force, which comprises a stand body, a sleeve, a lens clamping part, a lens, a push plate, a plurality of electromagnets and an elastic element, wherein the sleeve and the stand body are combined and fixed so that the sleeve can be rotated on the stand body, and the sleeve is provided with a first pushing mechanism; the lens clamping part is provided with a second pushing mechanism and connected with the sleeve by the second pushing mechanism and the first pushing mechanism; the lens is combined and fixed in the lens clamping part; the push pate is positioned on the outer wall of the sleeve; the electromagnets are respectively arranged on the stand body and the push plate, and the elastic element is connected with the sleeve and the stand body. By means of the repulsion force or the suction force in the magnetic field formed by electrifying the electromagnets, the sleeve is pushed to rotate, and the second pushing mechanism is actuated by the first pushing mechanism to drive the lens clamping part to move between a fist position and a second position. The invention is convenient for the miniaturization and the simplification of a lens module and can improve the probability of mass production.

The invention relates to an electric automatic gear shifting tricycle or quadricycle rear-drive shifter. The electric automatic gear shifting tricycle or quadricycle rear-drive shifter comprises a case, a drive shaft, a driven shaft and an inner rotator, wherein the drive shaft, the driven shaft and the inner rotator are arranged in the case; the drive shaft is fixedly provided with a fast shaft gear and a slow shaft gear; the driven shaft is fixedly provided with a first transmission gear in a connected mode and is freely sleeved with a first gear shifting gear and a second gear shifting gear; the first gear shifting gear and the second gear shifting gear are meshed with the fast shaft gear and the slow shaft gear respectively; the first transmission gear is meshed with a drive gear arranged on the inner rotator; a combination ring is fixedly connected between the first gear shifting gear and the second gear shifting gear; a groove and a convex block which can be in clamping-connecting fit with each other are correspondingly arranged on the faces, adjacent to the first gear shifting gear and the second gear shifting gear, of the combination ring; the combination ring is connected with an automatic gear shifting mechanism; the automatic gear shifting mechanism is controlled by a gear shifting motor outside the case. The electric automatic gear shifting tricycle or quadricycle rear-drive shifter is simple in structure, convenient to manufacture and assemble, and capable of achieving automatic gear shifting through the automatic gear shifting mechanism on the rear-drive shifter.

The invention discloses a manual splitter which comprises a splitting mechanism, wherein the splitting mechanism is connected with a manual drive mechanism used for driving the splitting mechanism to operate. The manual splitter has the advantages of being simple and compact in structure, being handy to carry by a single person, being manually driven through manpower, and being especially suitable for post-disaster emergency rescue, barrier breakage and other special occasions.

The invention relates to a turntable bearing in a chassis articulated system of an articulated vehicle. The articulated system comprises a front frame, a rear frame and the turntable bearing, wherein the turntable bearing comprises an outer ring and an inner ring; the rear frame is fixedly connected with the inner ring; a steel ball rolling way is formed between the outer ring and the inner ring in the circumferential direction; the outer ring consists of a first outer ring and a second outer ring; a concave step part is formed at the lower end of the second outer ring in the circumferential direction; the first outer ring is arranged on the step part of the second outer ring; and the second outer ring is connected with the front frame into a whole. The turntable bearing has a skilful design, a simple and compact structure, high reliability, light weight and long service life and is easy to process.

The invention relates to a material feeder of powder molding press, wherein said feeder is arranged on the frame of powder molding press and on the punch mould; it comprises a material hopper with a top material inlet and lower material outlet; the feeder also comprises a material feeding cylinder with bottom material feeding open; the side of feeding cylinder is through to the material outlet of hopper; the feeding cylinder has feeding brush formed by connected handle and brush part; the handle is connected to the motor; the brush part is at the material feeding open. The invention has simple structure and high stability.

The invention discloses a solar photovoltaic-thermal system and a manufacturing process thereof, which belong to the field of the photovoltaic-thermal technology. The system cavity is internally provided with a heat insulation layer, a photovoltaic assembly, a heat absorption plate, a heat exchange assembly and a heat preservation layer sequentially from top to bottom, wherein the core component of the photovoltaic assembly is a photovoltaic cell; and the heat absorption plate adopts a glass substrate. As the glass substrate and a silicon solar cell have equivalent material thermal expansion coefficient, when the cell works to enable the temperature to rise, the thermal stress of the contact surface between the glass substrate and the silicon solar cell can be reduced, cell breaking or connecting wire falling caused by the thermal stress can be avoided, and the service life of products can be prolonged; and the photovoltaic cell, the glass substrate and a microchannel heat exchanger are laminated integrally through a hot melt adhesive, the thermal resistance between a heat transfer plate and the heat exchange assembly is reduced based on the surface smoothness of the microchannel heat exchanger and the low loss thermal resistance characteristic of the hot melt adhesive, the product manufacturing steps are simplified, and the product manufacturing cost is reduced.

The invention provides a multi-purpose unmanned aerial vehicle disassembling and assembling vector screwdriver and relates to the technical field of installation tools. The multi-purpose unmanned aerial vehicle disassembling and assembling vector screwdriver comprises a torsion bar, a transmission shaft, a transmission assembly and an output shaft. One end of the torsion bar is detachably connected with one end of the transmission shaft, and the other end of the transmission shaft is connected with the transmission assembly which is connected with the output shaft; and the output shaft is usedfor installing a screwdriver blade. Twisting force is applied to the torsion bar, and is transmitted to the transmission assembly through the transmission shaft, and the transmission assembly transmits the twisting force to the output shaft so that the screwdriver blade can be driven to work. The multi-purpose unmanned aerial vehicle disassembling and assembling vector screwdriver is simple in structure, flexible to operate and convenient to manufacture and assemble; and due to the fact that mechanical connection is adopted during all assembling, the condition that two parts are welded does not exist, parts in the multi-purpose unmanned aerial vehicle disassembling and assembling vector screwdriver are easy to disassemble, maintain or replace, and the service life is longer.

The invention discloses a permanent magnet brushless direct current motor for an automobile window. The permanent magnet brushless direct current motor consists of an upper end cover, a lower end cover, a machine case, a bearing, a clamp spring, a support frame, a sensor installing plate, a stator iron core, a rotor iron core, a coil bag and a permanent magnet, wherein the support frame is fixed on the stator iron core and is used for supporting the sensor installing plate; a rectangular groove is formed in the surface and is used for coil gear groove crossing connection; through the sensor installing plate, a sensor and the stator iron core realize separated installation; the sensor can be conveniently repaired; a rotor is a stepped shaft without a rotor punching sheet; the structure is simple; the permanent magnet is of a circular ring shape, adopts surface pasting type installation and is directly embedded into the rotor iron core with cylindrical steps; the positioning is simple; the upper surface of the permanent magnet is fixed by the clamp spring so as to prevent the axial movement. The whole structure of the motor is simple; the installation is convenient; the repair and the replacement of the sensor are convenient; the work efficiency is much greater than that of a traditional permanent magnet direct current brush motor for the automobile window; wide market prospectsare realized.

The invention relates to an iron finishing machine iron finishing roller structure, and belongs to the technical field of textile printing and dyeing post-finishing machinery. The iron finishing machine iron finishing roller structure comprises: an iron finishing roller body, wherein a left shaft head cover is fixed on the left end, one side of the left shaft head cover forms a left supporting shaft head, a right shaft head cover is fixed on the right end, and one side of the right shaft head cover forms a right supporting shaft head; and a heating mechanism arranged in a cavity, wherein the heating mechanism comprises a left sealing disk, a right sealing disk, electric heating pipes, and an electric heating pipe protection casing, the left sealing disk and the right sealing disk are matched with the inner wall of the cavity, the group of the electric heating pipes is arranged between the left sealing disk and the right sealing disk, the left end and the left shaft head cover are fixed, the right end and the right shaft head cover are fixed, the electric heating pipe protection casing sleeves outside the electric heating pipe, a media heating chamber is formed on the cavity, a media introducing hole is arranged on the left and / or right sealing disk, and the position corresponding to the media introducing hole is provided with a media introducing hole sealing cover. The iron finishing machine iron finishing roller structure has characteristics of convenient manufacturing assembly and use maintenance, uniform iron finishing roller body temperature, assurance of fabric iron finishing quality, and energy consumption saving.

The invention discloses an engine hood for an electric vehicle and an assembly method thereof. The engine hood comprises a plastic outer plate, and a plastic cover plate bracket arranged at the inner side of the plastic outer plate. The assembly method of the engine hood for the electric vehicle realizes the assembly of the engine hood for the electric vehicle. The assembly method can satisfy the lightening requirement, has the advantages of energy conservation and environmental protection, can improve the driving mileage of the electric vehicle, and can provide the protection to pedestrians in the vehicle collision process; meanwhile, the connecting structure of the plastic outer plate and the plastic cover plate bracket satisfies the requirement of structural strength under the precondition of satisfying the battery heat dispersion of the electric vehicle; and compared with a metal engine hood, the engine hood for the electric vehicle is low in production and maintenance costs, and can satisfy the requirements of energy conservation and environmental protection.

The present invention discloses a lifting device for a substation and belongs to the technical field of electric tools. The device solves the technical problems in the prior art that the space between adjacent equipment in a substation is small and the equipment is inconvenient in lifting operation. The lifting device for the substation comprises a support. The bottom of the support is provided with a base. The base is connected with a power grid bracket in the substation. The top of the support is provided with a crane jib assembly. The crane jib assembly is connected with a fixed pulley and a lifting rope. The lifting rope is connected with a movable pulley. The movable pulley is provided with a lifting hook. The lifting rope sequentially comes round the movable pulley and the fixed pulley. The lifting device of the present invention is used for lifting and transporting to-be-maintained equipment in the substation.

The invention relates to the technical field of electric vehicles, in particular to a lightweight chassis structure of a low-floor electric coach. The front part of a dual-carling chassis main structure is connected with a front axle saddle through a group of beams, a dual-swing arm front suspension assembly is positioned and assembled on the front axle saddle, after being assembled, the dual-swing arm front suspension assembly is positioned above a carling horizontal structure zone, the rear part of the dual-carling chassis main structure is connected with front support boxes and rear support boxes through two groups of beams, front and rear pivots of a plate spring type rear axle assembly are positioned and assembled on the front and rear support boxes, after being assembled, the plate spring type rear axle assembly is also positioned above the carling horizontal structure zone, and the carling horizontal structure zone can serve as the in-coach floor support surface. The chassis main structure is simple and safe, the front and rear axle assemblies are conveniently assembled, the workspaces are not interfered, the height of the in-coach floor and the coach door stepping height are obviously lowered, and thus the height of the coach is lowered, so that the comfort of getting on and off the coach and the trafficability of the coach can be improved.

The invention provides an automatic adjustment structure and method of a cutter position of a gear shaper. The automatic adjusting structure of the cutter position of the gear shaper comprises a swingrod; a ball pull rod is installed inside the swing rod through a thread in a transmission fit mode; a first gear is machined on the ball pull rod; a second gear is machined on a ball pull rod gland matched with the ball pull rod; an oil cylinder is fixedly installed on a vertical column of a gear shaper body; a gear seat is fixedly installed at the tail end of a piston rod of the oil cylinder; transition gears are installed inside the gear seat; the transition gears are in meshing transmission with the first gear and the second gear at the same time; and the gear seat is matched with a guidemechanism fixed on the gear shaper body. According to the automatic adjustment structure of the cutter position of the gear shaper, a ball pull rod and a cutter shaft of a traditional gear shaper arerespectively provided with a gear, the other transition gear is pushed by the oil cylinder to be engaged with the two gears at the same time, then the cutter shaft is driven to rotate by a motor of the gear splitting movement of the cutter shaft and to drive the ball pull rod to rotate, the up-and-down movement of the cutter shaft is finally realized, and the automatic adjustment of the cutter position is realized.

The invention discloses a low-energy acoustooptic controlled LED lamp device, comprising a lampshade; an inner sidewall of the top of the lampshade is provided with connecting threads; an upper connecting cover is in threaded connection with the connecting threads and pressed against a top end face of the lampshade; an annular fixing ring is fixed on an inner sidewall of the lampshade; an LED lamp panel is inserted and nested into the annular fixing ring; an aluminum alloy heating panel is fixed on a top surface of the LED lamp panel and pressed against a top surface of the annular fixing ring; an annular elastic ring is fixed on a bottom surface of the upper connecting cover and pressed against a top surface of the aluminum alloy heating panel; a connecting piece extending radially and outwardly is arranged on one side of the upper connecting cover; a connecting circuit board is fixed in a placement groove formed in the connecting piece, and a photosensitive diode is fixed on the connecting circuit board; a through hole is formed in a bottom surface, facing the connecting piece, of the photosensitive diode, and a protective transparent block is fixed on a bottom surface of the connecting piece and covers the through hole; the low-energy acoustooptic controlled LED lamp device is good in heat dissipation effect, simple and convenient to manufacture and assemble, and long in service life.

The invention discloses a turnover type intelligent reconfigurable riveting clamp for thin plate parts. The turnover type intelligent reconfigurable riveting clamp is mainly used for clamping the thinplate part for drilling and riveting operation. The turnover type intelligent reconfigurable riveting clamp mainly comprises a multi-point flexible turnover tool mechanical body, a sensing module anda control module, clamping is carried out on a skin mainly in an N-2-1 positioning mode, the actual position of a positioning ball head is fed back through a stay wire displacement sensor assembled on an electric cylinder, a force measuring sensor and a vacuum pressure sensor feed back actual positioning point contact force and clamping force, an angle sensor detects the actual overturning angleof an overturning workbench, a controller collects actual clamping layout information through the data collection module, the actual clamping layout information and optimal clamping layout data inputby an upper computer are analyzed and decided, instructions from the controller are executed by the electric cylinder and an air pump, and adjusting is carried out on the tool position and the clamping force. The turnover type intelligent reconfigurable riveting clamp is suitable for riveting thin plate parts with different sizes and curvatures, the clamping layout can be adjusted in the machininggap according to different hole forming and riveting positions, and the product quality is effectively guaranteed.

The invention discloses a magnesium alloy automobile seat frame, comprising: a seat cushion frame; Double-lifting support mechanism, which are respectively arranged below the left and right side wallsof the cushion frame, each lifting support mechanism comprises a convex hexagon surrounded by the first link, the second link, the third link, the fourth link, the fifth link and the same side wall of the cushion frame, wherein the third link of the two lifting support mechanisms and the hinge points of the first link are connected through a horizontal sixth link; An elevation adjusting mechanismcomprising an eighth link, the other end of the eighth link extending in a direction away from the sixth link, the portion of the eighth link near the other end being provided with a rack; A gear positioned above and meshing with the rack; A ninth link connected to one end of the gear shaft and provided with a first adjusting handle at the end. The magnesium alloy automobile seat frame has the advantages that the height of the seat can be conveniently adjusted, the structure is simple, and the assembly is easy.

Disclosed in the invention is a magnetic loop type infinitely variable-speed device comprising an active permanent magnetic ring in an active rotation manner and an intermediate permanent magnetic ring. When the intermediate permanent magnetic ring enters the active permanent magnetic ring, the intermediate permanent magnetic ring is driven to make rotation by a magnetic torque generated by cutting magnetic force lines mutually; the intermediate permanent magnetic ring drives a spline shaft to make synchronous rotation; and a driving force is inputted into a gear variable-speed unit. In addition, the magnetic loop type infinitely variable-speed device also includes a static braking permanent magnetic ring. After exit of the rotating intermediate permanent magnetic ring, the braking permanent magnetic ring sleeves the intermediate permanent magnetic ring and rotation of the intermediate permanent magnetic ring is stopped by a magnetic torque generated by cutting magnetic force lines mutually, so that the spline shaft and the gear variable-speed unit connected with the spline shaft rotates at a reduced speed or stops rotating. According to the magnetic loop type infinitely variable-speed device, infinitely variable-speed, braking, and overloaded slip frequency protection functions can be realized simultaneously; and the torque is transmitted by the magnetic field, so that the harmful vibration, wearing, and breakage can be eliminated substantially, the service life of the variable-speed device can be prolonged, and the damage caused by overloading is avoided.

The invention provides a modularized front panel of a power distribution plug-in box. The modularized front panel comprises a front panel; a power distribution coupler is arranged on the front panel;a miniature circuit breaker is arranged below the power distribution coupler; the miniature circuit breaker is mounted on the front panel through a circuit breaker mounting assembly; a terminal driving mechanism is arranged on one side of the miniature circuit breaker; a multifunctional instrument is arranged above the terminal driving mechanism and is used for detecting electric and environmentalparameters; the circuit breaker mounting assembly comprises a clamping grooved rail, two mounting fixing plates and a circuit breaker protection cover; the mounting fixed plates are mounted on the front panel through pressing bars and bolts; the sizes of the pressing bars are matched with the sizes of the mounting fixed plates; and two wedge-shaped snap joints are clamped on one side of the miniature circuit breaker. According to the modularized front panel, the packaged mounting and dismounting of the miniature circuit breaker and the power distribution coupler can be realized, and the modularized layout is more reasonable.