44results about How to "Reduce motion friction" patented technology

The invention discloses a patient caring bed with a turnover assisting function and a turnover assisting method thereof and belongs to the field of caring beds. The patient caring bed comprises a bed body frame, a bed plate, an ejection mechanism and a cloth winding mechanism, wherein the cloth winding mechanism comprises cloth winding rolls, a driving device and turnover cloth; the cloth winding rolls are arranged at the two sides of the caring bed; the driving device is used for driving the cloth winding rolls to rotate; the two ends of the turnover cloth are respectively and fixedly wound on the cloth winding rolls at the two sides; the turnover cloth between the two cloth winding rolls are laid on the bed plate; the ejection mechanism comprises two ejecting rolls positioned under the turnover cloth, an ejecting bracket for installing the ejecting rolls, an electric pushing rod arranged under the ejecting bracket and a guiding device. The invention also discloses the turnover assisting method of the patient caring bed. The patient caring bed and the turnover assisting method disclosed by the invention have the advantages that the inclination of the body of a patient is realized by utilizing the ejection mechanism and the cloth winding mechanism to assist serving staffs to turn over the patient, the turnover action is gentle, the comfort level of the patient is high, and the working intensity of the serving staffs is greatly reduced.

The invention discloses a three-axial-force performance test device of a large-push-force superconductive linear motor. A horizontal moving test desk and a vertical moving test desk are mounted on a main body frame; a horizontal moving test desk consists of a transverse servo motor, a longitudinal servo motor, a transverse ball screw and a longitudinal ball screw; a horizontal plate is mounted on the horizontal moving test desk; a primary linear motor is fixed on the horizontal plate; the vertical moving test desk has the structure that servo motors and ball screws are vertically mounted; two groups of linear modules are vertically fixed on the left side surface and the right side surface of the main body frame respectively; a rectangular frame is fixed on sliding blocks of four linear modules; four three-axial-force sensors are fixed between an upper plate and a lower plate of the bottom surface of the rectangular frame; a secondary linear motor is fixed on the bottom surface of the lower plate; linear displacement sensors are respectively mounted close to the three ball screws; and signals of the three-axial-force sensors are transmitted to an industrial personal computer by an amplifier and a multichannel data acquisition card. The device is used for achievement verification of theoretical research of large-push-force and large-air-gap superconductive linear motors in a laboratory at present, is simple in structure and easy to mount, and is applicable to multiple experiment environments.

The invention provides electric power supply equipment provided with roller grooves and capable of damping. The electric power supply equipment comprises a pin type insertion device (3) and a base hole type fixing device. The pin type insertion device (3) comprises a body part (30) and two pin type plugs (31) which are symmetrically arranged relative to a central axis of the body part (30). An upper part of each of the two pin type plugs (31) is provided with a guiding horizontal part (33) which is used for slidably cooperating with a corresponding one of two slide grooves (32) in the body part (30) and bearing a force load in an up-and-down direction. The base hole type fixing device comprises a pedestal (1) and two mounting racks (4) which are symmetrically arranged relative to the central axis and which are fixed on the pedestal (1). Each mounting rack (4) is internally provided with a slot (40) in which a corresponding one of the two pin type plugs (31) is inserted.

The invention discloses a three-sleeve elastic self-sealing safety valve. The three-sleeve elastic self-sealing safety valve comprises a bonnet, a valve body, a valve seat, a valve flap, a guiding cylinder, a sleeve, a lower cooling fin, an upper cooling fin and a valve rod; an anti-blowing sleeve positioned above the lower cooling fin is arranged on the valve rod; an annular groove is arranged on the lower end surface of the anti-blowing sleeve; a retainer ring capable of extending into the groove in a matched manner is arranged on the upper surface of the lower cooling fin; a sealing cylinder capable of extending into the inner ring of the lower cooling fin is arranged on the inner side of the lower end surface of the anti-blowing sleeve; a limit sleeve positioned under the lower cooling fin and a lock sleeve matched with the upper surface of the valve flap in a compression joint manner are arranged on the valve rod; a conical block which has a small lower part and a large upper part is arranged in the center of the lower surface of the valve flap; an annular pressure bearing slot is formed in the lower surface of the valve flap; an elastic sealing ring positioned on the outer side of the pressure bearing slot is arranged on the lower surface of the valve flap. The three-sleeve elastic self-sealing safety valve has the advantages that the design is reasonable, the sealing performance is high, the lifting guiding and vertical stability are high, the adjustment sensitivity is high, the performance and stability of opening, setting and return actions of the valve are good, and the valve is particularly applicable to harsh working conditions such as high temperature and high pressure conditions.

Electric power supply equipment with a rolling wheel and a touch sensor is disclosed. The electric power supply equipment comprises a pin type inserting apparatus (3) and a base-hole type fixed apparatus; the pin type inserting apparatus (3) comprises a body part (30) and two pin type plugs (31) that are arranged symmetrically around the central shaft line of the body part (30); a guide horizontal part (33) is arranged at the upper part of each of the two pin type plugs (31); the guide horizontal part is used for being glidingly matched with a corresponding one of two sliding grooves (32) in the body part (30) to bear the force load in the up and down directions; the base-hole type fixed apparatus comprises a base (1) and two mounting racks (4) that are fixed on the base (1) and arranged symmetrically around the central shaft line; and a slot (40) for allowing corresponding one of the two pin type plugs (31) to be inserted is formed in each mounting rack (4).

The invention belongs to the technical field of safety protection of underwater facilities, and discloses a pier anti-collision system capable of resetting automatically and a method, the pier anti-collision system capable of resetting automatically is provided with a pier, an anti-collision unit and a buoyancy tank are assembled around the pier through a frame panel, and a pulley structure is arranged between the pier and the frame panel; the anti-collision unit is provided with a second steel plate welded to the first steel plate, and a rotating shaft seat is fixed to the upper side of the first steel plate; the rotating shaft seat is connected with a compression inclined cylinder through a rotating shaft, and an inclined rod is sleeved with the compression inclined cylinder and connected with a rotating strip through the rotating shaft seat; a spring is wound on the compression inclined cylinder and the inclined rod, and a baffle is arranged at the lower end of the compression inclined cylinder and connected with the spring. The pier anti-collision system focuses on energy dissipation, compresses the elastic rod pieces after collision to obtain flexible buffering, increases resistance borne by a ship, slows down the speed, enables the ship to be far away from a pier after the anti-collision component releases elastic energy, can effectively prevent collision, and protects the safety of the ship to the maximum extent.

The invention relates to the technical field of switching valves used for pneumatic conveying systems, and in particular discloses a single-disk valve which is sealed reversely. The inlet valve body of the single-disk valve is in a cylindrical structure of which the upper end and the lower end are provided with flange disks; a valve rod hole is formed in the flange disk at the lower end of the inlet valve body; the outlet valve body of the single-disk valve is in a funnel-shaped structure of which the upper end and the lower end are provided with flange disks; the flange disk at the upper endof the outlet valve body is matched with the flange disk at the lower end of the inlet valve body; a valve disk is in an inverted conical disk structure of which the edge is a sharp edge; and a valverod assembly passes through the valve rod hole of the inlet valve body and is arranged between the inlet valve body and the outlet valve body so that the valve rod assembly can drive the valve disk to open or close a channel in the lower end surface of the cylinder of the inlet valve body. In the single-disk valve, the influence on the action of a valve caused by the accumulation and the slag-bonding of materials can be eliminated by a funnel-shaped valve cavity; simultaneously, the single-disk valve is simple in structure and convenient to maintain, and has the characteristics of lighter weight, lower cost and longer service life compared with other material cutout valves such as sealing ball valves and the like in the same specification, hardness and density; and a plurality of single-disk valves can be connected in series or are installed and used by exchanging with other ball valves.

Electric power supply equipment with a rolling wheel and a guide rod is disclosed. The electric power supply equipment comprises a pin type inserting apparatus (3) and a base-hole type fixed apparatus; the pin type inserting apparatus (3) comprises a body part (30) and two pin type plugs (31) that are arranged symmetrically around the central shaft line of the body part (30); a guide horizontal part (33) is arranged at the upper part of each of the two pin type plugs (31); the guide horizontal part is used for being glidingly matched with corresponding one of two sliding grooves (32) in the body part (30) to bear the force load in the up and down directions; the base-hole type fixed apparatus comprises a base (1) and two mounting racks (4) that are fixed on the base (1) and arranged symmetrically around the central shaft line; and a slot (40) for allowing corresponding one of the two pin type plugs (31) to be inserted is formed in each mounting rack (4).

The invention provides electric power supply equipment provided with roller grooves. The electric power supply equipment comprises a pin type insertion device (3) and a base hole type fixing device. The pin type insertion device (3) comprises a body part (30) and two pin type plugs (31) which are symmetrically arranged relative to a central axis of the body part (30). An upper part of each of the two pin type plugs (31) is provided with a guiding horizontal part (33) which is used for slidably cooperating with a corresponding one of two slide grooves (32) in the body part (30) and bearing a force load in an up-and-down direction. The base hole type fixing device comprises a pedestal (1) and two mounting racks (4) which are symmetrically arranged relative to the central axis and which are fixed on the pedestal (1). Each mounting rack (4) is internally provided with a slot (40) in which a corresponding one of the two pin type plugs (31) is inserted.

The invention discloses building template waste removing equipment, and belongs to the technical field of building waste treatment. The building template waste removing equipment comprises a stock bin and two adjusting assemblies arranged on the outer wall of the top of the stock bin; two grinding cylinder mechanisms are arranged between the two adjusting assemblies, and each grinding cylinder mechanism comprises a main shaft cylinder and a rotary column rotationally connected to the inner wall of the main shaft cylinder; and the outer wall of each main shaft cylinder is provided with three groups of material guiding assemblies and two groups of crushing assemblies which are arranged spaced from the material guiding assemblies, and each crushing assembly comprises a crushing cylinder body fixedly connected to the outer wall of the corresponding main shaft cylinder and three movable plates slidably connected to the inner wall of the crushing cylinder body. By arranging the grinding cylinder mechanisms, the problems that in the prior art, smashing elements of an existing device are simplified, the execution function is single, and building template powder can be removed only through staged working procedures of multiple power elements are solved; the grinding cylinder mechanisms of the device can guide and convey materials in time, the materials are treated in the conveying process, the removing efficiency is improved, and power can be applied to the material guiding assemblies and the crushing assemblies through the main shaft cylinders and the rotary columns.

The invention discloses a granule transmission which comprises an input cylinder, an input piston, a connecting transition section, an output cylinder, an output piston and granules, wherein the input cylinder is communicated with the output cylinder through the connecting transition section; one end of the input piston is arranged in the input cylinder; one end of the output piston is arranged in the output cylinder; the granules are filled in the input cylinder, the output cylinder and the connecting transition section. The granule transmission disclosed by the invention has low requirement to the processing accuracy of the cylinders and the pistons and has the obvious advantages of no leakage, less pollution, high temperature resistance and the like.

The invention discloses a rolling cylinder transmission device. The rolling cylinder transmission device comprises an input cylinder body, an input piston, a variable-cross-section transition section, an output cylinder body, an output piston and a rolling cylinder, wherein the input cylinder body is connected with the output cylinder body through the variable-cross-section transition section, one end of the input piston is arranged inside the input cylinder body, one end of the output piston is arranged inside the output cylinder body, and the rolling cylinder body is injected into the input cylinder body, the output cylinder body and the variable-cross-section transition section. The rolling cylinder transmission device is low in requirement for machining accuracy of the cylinder bodies and the pistons, and has the obvious advantages of being free of leakage, small in pollution, resistant against high temperature and the like.

The invention discloses a three-way valve assembly of a new energy vehicle cooling system and a control method and belongs to the technical field of new energy vehicles. Through the three-way valve assembly of the new energy vehicle cooling system and the control method, the problems of poor leakproofness, jamming, instable work, low precision, high cost and the like in the prior art are solved, and high applicability is achieved particularly for special occasions with strict requirements for work environment and performance. The three-way valve assembly of the new energy vehicle cooling system comprises a three-way valve shell and a three-way valve core. A drive drives the three-way valve core to rotate, and then a cooling liquid channel is adjusted. The drive comprises a worm-gear transmission mechanism driven by a motor, and a worm gear is connected with a reduction gear unit. The three-way valve core is installed on a reduction gear of the reduction gear unit. The angle needed by rotation of the motor is controlled by a controller. The three-way valve assembly of the new energy vehicle cooling system and the control method have the advantages that structure is reasonable, application range is wide, and work is stable and reliable, and good economic benefits and wide market prospects are achieved.

Provided is a power supply device with rollers. The power supply device comprises a pin-type insertion unit (3) and a seat-hole type fixing unit. The pin-type insertion unit (3) comprises a unit body part (30) and two pin-type plugs (31) which are symmetrically arranged relative to the central axis of the unit body part (30). The upper part of each pin-type plug (31) is provided with a horizontal guide part (33) for slidingly being in slide fit with a corresponding one of two slide grooves (32) in the unit body part (30) and for bearing the force load in the vertical direction. The seat-hole type fixing unit comprises a base (1) and two mounting racks (4) which are fixed on the base (1) and are symmetrically arranged relative to the central axis. Each mounting rack (4) is provided with a slot (40) therein for insertion of the corresponding one of the two pin-type plugs (31).

The invention discloses an anti-falling device for a building component for building construction, and relates to the technical field of buildings. The problem of low mounting and fixing efficiency issolved. The anti-falling device specifically comprises a bottom plate, clamping assemblies, moving assemblies, connecting assemblies and buffering assemblies; the clamping assemblies comprise first fixing plates and threaded sleeves, the outer walls of the tops of the first fixing plates are fixedly connected with supports I, and the outer walls of the threaded sleeves are fixedly connected to the inner walls of the supports I; the inner walls of the threaded sleeves are in threaded connection with screw rods, and the outer walls of one ends of the screw rods are connected with push plates through flanges; guide rods are fixedly connected to the outer walls of one sides of the push plates, guide sleeves are movably connected to the outer walls of the guide rods, the outer walls of the guide sleeves are fixedly connected to the inner walls of the supports I, and first clamping plates are fixedly connected to the outer walls of the other sides of the push plates; and supports II are fixedly connected to the outer walls of the tops of the first fixing plates, and second clamping plates are fixedly connected to the outer walls of one side of the supports II. According to the anti-falling device for the building component for building construction, by arranging the clamping assemblies, drilling on a steel beam can be avoided, and the mounting and fixing efficiency of the device isimproved.

The invention discloses an automatic picking, placing and conveying device for insect breeding. The automatic picking, placing and conveying device comprises a rack arranged at one side of a multi-layer breeding frame, wherein a tray picking mechanism used for picking and placing breeding trays is arranged on the rack and comprises a bearing seat capable of ascending and descending in the rack anda push-and-pull assembly capable of translating back and forth on the bearing seat; the bearing seat is used for lifting to a position near the breeding trays at any layer of the breeding frame; andat least one end part of the front end and the rear end of the push-and-pull assembly is provided with a connecting assembly which is used for being connected with the breeding trays on the same layerto pull the breeding trays on the breeding frame to the bearing seat through horizontal movement of the push-and-pull assembly or used for being disconnected after the push-and-pull assembly horizontally moves and pushes the breeding trays on the bearing seat to the breeding frame. The invention also discloses an insect breeding system. The automatic picking, placing and conveying device providedby the invention has the advantages of convenience and rapidness in operation, high intelligent automation degree, high breeding area utilization rate, good breeding effect and capabilities of greatly reducing the labor intensity and well adapting to an automatic breeding system.

The invention provides a PVC plate laminated film edge cutting device. The cutting device comprises a rack and a PLC, wherein the rack is provided with an operation platform and a feeding roller, theoperation platform is provided with an adjusting lead screw and an adjusting motor which are connected with each other, and meanwhile, the two ends of the adjusting lead screw are connected with adjusting seats through threaded screw threads opposite in rotating direction; and pressing rollers and hot cutting knives are arranged on the adjusting seats, and electric soldering irons for heating thehot cutting knives further arranged on the adjusting seats. According to the PVC plate laminated film edge cutting device, redundant films are heated and burnt through the hot cutting knives, and thenthe burnt films are extruded and cut through the pressing rollers, so that the burnt films are removed, the redundant films are rapidly removed under the condition that a PVC plate is not damaged, the cutting and removing efficiency of the redundant films is improved, and the cutting quality is guaranteed.

The aerostatic bearing comprises a throttler mounting seat, a rotating shaft, a first thrust plate, a second thrust plate and a throttler set, mounting through holes perpendicular to a first plane and a second plane are formed in the throttler mounting seat, the rotating shaft is arranged in the mounting through holes of the throttler mounting seat, and the first thrust plate and the second thrust plate are arranged in the throttler mounting seat. The first thrust plate is fixedly connected with the first end of the rotating shaft, the second thrust plate is fixedly connected with the second end of the rotating shaft, the throttler set is located between the throttler mounting base and the first thrust plate and between the second thrust plate and the rotating shaft, and an air inlet channel communicated with the throttler set is arranged in the throttler mounting base; the throttler group is mounted between the rotating shaft and the throttler mounting seat, a high-pressure gas film is formed between the rotating shaft and the throttler mounting seat through the throttler group, and the surface of a kinematic pair is isolated by the high-pressure gas film, so that the kinematic friction can be remarkably reduced, and the high-precision high-speed low-heat-emission motor has the advantages of high precision, high speed, low heat emission, no pollution and the like.

The invention relates to the technical field of precise movement, and discloses a precise movement air floatation supporting device which comprises a base, a guide rail and a supporting frame, wherein the guide rail is horizontally arranged on the base and fixedly connected with the base, the supporting frame is arranged on the guide rail in a sleeving mode and can slide along the guide rail, and the supporting frame comprises a bottom air floatation plate, a top air floatation plate and lateral air floatation plates; the number of the lateral air floating plates is two, the two lateral air floating plates are symmetrically arranged, lateral air paths are arranged in the lateral air floating plates, lateral air inlet holes and lateral exhaust holes which are communicated with the lateral air paths are formed in the surfaces of the lateral air floating plates, and a bottom surface air path is arranged in the bottom air floating plate. And the surface of the bottom air floating plate is provided with a bottom surface air inlet hole and a bottom surface air outlet hole which are communicated with the bottom surface air path. Compared with the prior art, the precise movement air floatation supporting device is simple and reliable in structural design, the air inlet and outlet holes and the air path design can effectively reduce the space occupation amount of an air source, the supporting frame has good movement posture and movement precision, and the use experience of operators is good.

One kind of rate of fluid flow adjusting device, including the outer covering, installs in the outer covering the electrically controlled valve body and the control electrically controlled valve body movement control circuit board, states the electrically controlled valve body to include the coil, the skeleton, the magnetic core good support, the ball arm of force and the magnetic core stick, outside the skeleton circles the coil, the coil causes the welding control circuit board, for the skeleton center magnetic core good support through two designs balls arm of force with the skeleton company is a body, a magnetic core stick end loads fixes on the magnetic core good support, the magnetic core stick another end surface pastes is useful coats the idle talk to the control electromagnetic screen to open / shutting down gas bag, The outer covering is the electromagnetism screening can, the control circuit board surface has the shield level, on the electrically controlled valve body fixed once more control circuit board, has the electromagnetism screening can and the seal electromagnetic screen gap control circuit board permanent connection constitution electromagnetism entire screening can. Uses this invention, screening can eliminated the electronmagetic interference through the electromagnetism, the electric circuit control section and the product design is a body, big simplified the product zero number of articles, reduced the production cost, is the production is easier to manage the control, makes the product reliability greatly to enhance.

The invention relates to the field of manufacturing equipment of smoke suppressing glass sand and particularly relates to manufacturing equipment of smoke suppressing glass sand. The manufacturing equipment comprises a glass crusher, a paraffin wrapper and a motor. The glass crusher is connected to a conveyer belt, the other end of the conveyer belt is connected to the paraffin wrapper, the paraffin wrapper comprises a smelter and a hollow heating layer located on the bottom surface of the smelter, a top cover is arranged on the smelter, the upper portion of the top cover is connected to a condensing pipe, the lower portion of the top cover is connected to a plurality of stirring rods which are different in length, screens are fixedly arranged at the bottoms of the stirring rods, the top cover is connected to a driving shaft, the driving shaft is connected to the motor, a feed inlet of paraffin is formed in the driving shaft, and the feed inlet extends into the smelter downward along the driving shaft. According to the manufacturing equipment provided by the invention, coarse glass sand is prepared by using leftovers of glass, so that raw materials are saved; furthermore, a step of preparing glass at a high temperature is further cancelled, so that the preparation cost is lowered. The paraffin glass sand manufactured by the equipment forms cakes during smoke suppression, so that the cakes are only be cleaned if the paraffin glass sand is cleaned, and the manufacturing equipment is simple to operate.

The invention discloses a pressure plate structure for a clutch. The pressure plate structure comprises a driven plate and a driving plate; the driven plate is provided with one or more engagement parts; each engagement part is composed of an inner bent board, an outer bent board and a plurality of rotary rollers, the inner bent board and the outer bent board are installed on the same surface of the driven plate, and the two ends of the rotary rollers are rotationally installed on the inner bent board and the outer bent board; the driving plate is provided with at least one first through hole,and the multiple first through holes are distributed on the concentric circle of the driving plate; and each first through hole is internally and rotationally provided with a gear, and the gears drive the rotary rollers to rotate in the process of passing through the engagement parts. According to the pressure plate structure for the clutch, the rotary rollers and the gears are rotationally installed, the centripetal force applied by the gears to the driven plate in the driving plate rotation process can be eliminated advantageously, and accordingly, motion friction of the driven plate is reduced so that the pressure plate abrasion risk can be reduced; and the rotary rollers are engaged with the gears, so that the risk that the driven plate and the driving plate are separated and fail isavoided.

The invention discloses homogenizing equipment for producing and processing chemical and blended textile fabrics and a using method of the homogenizing equipment, and particularly relates to the field of textile production. The homogenizing equipment comprises a homogenizing treatment tank, an unwinding roller and a winding roller which are located at the two ends of an inner cavity of the homogenizing treatment tank are detachably installed in the homogenizing treatment tank, a rotation driving mechanism is in transmission connection with the end part of the winding roller, a circulating homogenizing tank is fixedly installed in the homogenizing treatment tank, a thermal fixing mechanism is fixedly installed on one side of the circulating homogenizing tank, and a circulating flow guide mechanism and a high-pressure spray pump are fixedly installed in the circulating homogenizing tank. According to the scheme of the homogenizing equipment for producing and processing the chemical and blended textile fabrics, the textile homogenizing equipment adopts the circulating slurry spraying and homogenizing structure, a homogenizing spraying mechanism and the circulating flow guide mechanism are used for spraying slurry and circularly guiding the slurry in the circulating homogenizing tank, slurry flow driving is carried out on the two sides of a fabric correspondingly, so that the slurry can go deep into gaps of fabric fibers, the adhesive capacity of the feed liquid is effectively enhanced, and the homogenizing effect is improved.

The invention discloses a fermentation tank moving vehicle, fermentation tank transferring equipment and a transferring method. The fermentation tank moving vehicle comprises a structural frame, a supporting platform is fixedly connected to the upper portion of the structural frame. A plurality of rolling wheels are fixedly connected under the base; a telescopic platform and a driving mechanism are arranged on the supporting platform; the telescopic platform is connected with the supporting platform through the telescopic mechanism, the telescopic platform is used for supporting the fermentation tank, when the fermentation tank is placed on the telescopic platform, the telescopic platform drives the fermentation tank to move up and down in a telescopic mode, and the driving mechanism is used for driving the telescopic platform to do telescopic motion. According to the invention, the fermentation tank is transferred in a roller track manner; therefore, the problem that a rolling chain is frequently overhauled and maintained is avoided, the transfer cost and the maintenance cost are greatly reduced, meanwhile, the fermentation tank is transferred in a special transfer mode, and underthe condition that the transfer requirement of large-batch fermentation tanks is met, the conveying route is remarkably shortened, the transfer efficiency is improved, and the utilization rate of thefermentation tank moving vehicle is increased.

The invention discloses a transplanting mechanism special for male parent two-line transplanting of hybrid rice seed production. The transplanting mechanism comprises a transmission part, a left transplanting mechanism and a right transplanting mechanism, wherein the left transplanting mechanism and the right transplanting mechanism are in symmetrical structures, the left transplanting mechanism is respectively in hinge connection with the left end of a gear shaft of the transmission part and the rear left part of a transmission case through a left crank shaft and a left rocker shaft, the right transplanting mechanism is respectively in hinge connection with the right end of the gear shaft of the transmission part and the rear right part of the transmission case through a right crank shaft and a right rocker shaft, and the crank of the left crank shaft and the crank of the right crank shaft are arranged by 180 degrees at two ends of the gear shaft. By adopting the transplanting mechanism, the left seedling claw of the left transplanting mechanism and the right seedling claw of the right transplanting mechanism realize a two-row staggered transplanting function, the final transplanting effect of the one-stage two-row male parent is 'delta-shaped'or triangular, specific agronomic requirements of male parent one-stage two-line interval transplanting of the hybrid rice seed production can be met, seedling intervals are uniform, the seedling transplanting quality is good, the production efficiency is high, and the labor intensity of the hybrid rice seed production is effectively reduced.

The invention discloses a current-limiting operating mechanism of a circuit breaker. The mechanism comprises a main shaft, an opening half shaft, a lower connecting rod and a jump pin assembly. When the circuit breaker is short-circuited, the main shaft, the lower connecting rod, the jump pin assembly and the opening half shaft are linked in sequence to protect limit current of the circuit breaker. The mechanism is characterized in that the the jump pin assembly comprises a support, a jump pin plate, a first rotating shaft, a second rotating shaft and an elastic piece; the first rotating shaft penetrates through the support; the support can rotate along the first rotating shaft; a second rotating shaft is arranged on the support; the second rotating shaft penetrates through one end of thejump pin plate; and an elastic piece is arranged between the other end of a tripping plate and the support, the elastic piece enables the tripping plate to abut against the opening half shaft in theclosing state, and when the circuit breaker is short-circuited, the elastic piece pushes the tripping plate to rotate, so that the tripping plate is separated from the opening half shaft. The inbvention is stable in work, rapid in tripping and accurate in current limiting.