112results about How to "Prevent self-rotation" patented technology

The invention discloses a conveniently fixed underwater drilling device for construction engineering, which includes a support leg, the bottom end of the support leg is fixedly connected with a fixed base, the surface of the fixed base is fixedly connected with a bearing seat through bolts, and the inside of the bearing seat The first bearing is fixedly connected, the inner ring of the first bearing is fixedly connected with the first rotating shaft, one end of the first rotating shaft is fixedly connected with the worm, and the inside of the fixed base is respectively provided with a lifting chamber and a chute. The easy-to-fix underwater drilling device for construction workers achieves the effect of telescopically adjusting the first threaded pipe, thereby facilitating the fixed base to be fixed and stable, achieving the effect of facilitating the rotation of the first threaded rod, and at the same time preventing the first threaded rod from The problem of the self-rotation of the rod after adjustment occurs, which can make the two-threaded rod connected by the second threaded pipe screw up and down more stable, and enhance the drilling effect of the drill bit, thus effectively solving the problem of insufficient stability of ordinary underwater drilling equipment question.

The invention relates to a bracket structure, particularly to a connection structure for a tablet computer and a bracket thereof, comprising a tablet computer and a bracket; the connection structure is characterized in that the tablet computer is externally provided with a protecting jacket, and an interlayer or an inner side of the projecting jacket close to the tablet computer is provided with a sheet iron; and the tablet computer can be adsorbed to the bracket having a magnet via the sheet iron. The connection structure for the tablet computer and the bracket thereof provided by the invention is simple in structure design and ingenious in concept, so that tablet computer can be automatically absorbed to the bracket when the user takes the back of the tablet computer close to the bracket; the universal connection structure at the bottom of the bracket can drive the tablet computer to freely rotate with wider angles, so that requirements on visual angles of the users can be satisfied; and the universal structure is provided with an anti-slip structure capable of preventing the tablet computer from rotating voluntarily with the universal structure.

The invention discloses a self-clamping linkage clamp capable of preventing shaft rotation. The self-clamping linkage clamp capable of preventing shaft rotation comprises a front clamping mechanism used for clamping a shaft and a rear clamping mechanism used for clamping a fixing piece installed on the shaft in a screwed mode. A connecting mechanism is arranged between the front clamping mechanism and the rear clamping mechanism, and the front clamping mechanism and the rear clamping mechanism are connected and can rotate relatively in one direction through the connecting mechanism. The connecting mechanism can stretch in the axial direction, and the maximum stretching distance of the connecting mechanism is larger than the axial length of the fixing piece. According to the self-clamping linkage clamp capable of preventing shaft rotation, through the arrangement of the front clamping mechanism, the rear clamping mechanism and the connecting mechanism, the purpose of preventing the shaft from rotating when the fixing piece on the shaft is dismounted is achieved, oil leakage and even falling of internal connecting lines caused by shaft rotation are prevented, and using is convenient. After dismounting is completed, a handle is rotated so as to rotate a stop lever out of a clamping groove, an auxiliary handle rebounds automatically under the action of a return spring, the clamped piece is loosened, and thus the clamp can be dismounted from the shaft, and operation is easy and convenient.

The invention discloses an automatic demolding machine for medical gloves, and relates to the technical field of automatic demolding machines for the gloves. Demolding is realized without participation of a blow-off mechanism. The automatic demolding machine specifically comprises a mold conveying rail used for conveying glove molds and a demolding rail with demolding mechanisms, the glove molds are installed on the mold conveying rail through a conveying fixing seat, the demolding rail is arranged below the mold conveying rail, the demolding mechanisms are evenly distributed on the demoldingrail, and the demolding mechanisms comprise demolding clamps, demolding bases and lifting motors; and a pushing mechanism for pushing the demolding mechanisms to longitudinally move relative to the glove molds is further arranged on one side of the demolding rail. By arranging a lifting stud, the lifting motors, a rotating rod and other structures, a mounting frame can be driven to perform liftingmotion, rolling wheels correspondingly slide on the outer wall of the rotating rod, the motion trails of the rolling wheels are limited through the acting force between the rotating rod and the rolling wheels, and the demolding clamps can achieve demolding without the participation of the blow-off mechanism.

The invention discloses a sawtooth-shaped cutting steel wire with a flat section. The sawtooth-shaped cutting steel wire comprises a cutting steel wire body, wherein the cross section of the cutting steel wire body is flat; the cutting steel wire body is in continuous sawtooth-shaped distribution along the axial direction; the length of a short sawtooth edge of each sawtooth in the cutting steel wire body is 1 / 3-1 / 2 time of the length of a long sawtooth edge of each sawtooth; the height of each sawtooth is 0.15-0.3 time of the height of the flat cross section of the cutting steel wire body; a ratio of the width to the height of the flat cross section of the cutting steel wire body is 0.7-0.9. The sawtooth-shaped cutting steel wire with the flat section has the advantages that due to the flat arrangement of the cross section of the cutting steel wire, the phenomenon of self-rotation of the cutting steel wire in a main roller guide slot in a cutting process is avoided; line marks on the tail part of a silicon crystal cutting surface are reduced, the surface smoothness of the silicon crystal cutting surface is improved, and the cutting stability of the cutting steel wire is further improved; furthermore, due to the continuous and uniform sawtooth-shaped arrangement of the cutting steel wire along the axial direction, the silicon stick feeding speed of the cutting steel wire is increased, and the cutting efficiency is improved.

The invention relates to a sampling device, in particular to a layered quantitative sampling device for petroleum detection. The invention provides the layered quantitative sampling device for petroleum detection, which can be used for quantitatively sampling petroleum. The layered quantitative sampling device for petroleum detection comprises a fixing frame, a first connecting plate, connecting frames, a fixing plate, a fixing rod, a first telescopic rod, a second connecting plate, a pulley, a pull rope, a first spring, a third connecting plate, a first connecting block, a first rotating shaft, a loading frame, a shell, a lifting mechanism and a rotating mechanism, wherein the first connecting plate is arranged on the inner side of the middle part of the fixing frame, and the connecting frames are installed on the left and right sides of the middle part of the fixing frame. Through the lifting mechanism, a worker can move the loading frame to a petroleum sampling position only by rotating a rocker to sample petroleum, the sampling amount of the petroleum can be controlled through the rotating mechanism, and excessive petroleum is prevented from being taken.

The invention belongs to the technical field of locknuts and discloses a locknut for a rotor of a gas turbine. The locknut comprises a recessed part arranged on the outer side face of a nut body, the distance between any point on the recessed part and the center of the nut body is smaller than the radius of the outer side face of the nut body, and the recessed part penetrates the whole nut body in the radial direction. Through the arrangement of the recessed part penetrating the whole nut body in the radial direction on the outer side of the nut body, the recessed part is matched with a protruding shoulder, and the locking function is achieved. The structure of an existing wheel disc is fully used, the structure is simple, assembly and disassembly are convenient, and the anti-looseness self-locking effect is good. The invention discloses two machining methods of the locknut. Multiple recessed parts can be machined at the same time through a tool rotary disc and linear cutting, and the recessed parts are not limited to the contour shape.

The invention relates to an aquaculture tank, in particular to an aquaculture tank providing convenience for classified placement and quick picking and placement. The to-be-solved technical problem isto provide an aquaculture tank providing convenience for classified placement and quick picking and placement and capable of facilitating transport and preventing arm aches of a worker. According tothe technical scheme, the aquaculture tank providing convenience for classified placement and quick picking and placement comprises a bottom plate, mounting frames, a glass box, a first bearing seat,a first guide rail, a first guide sleeve, a supporting plate, a first extension rod and the like; the mounting frames are connected to the left and right sides of the top of the bottom plate, and theglass box is connected between the tops of the two mounting frames. The aquaculture tank providing convenience for classified placement and quick picking and placement has the advantages that a control device can provide convenience for people to pick and place a cultivation box in the glass box, an oxygen supply device can supply oxygen to aquatic products in the cultivation box, thereby preventing the aquatic products in the cultivation box from dying out of oxygen, a baffle can prevent the aquatic products in the cultivation box from jumping out of the cultivation box, a pressing block moves vertically to fix a first rotating shaft, so that a second rocker can be prevented from rotating actively.

The invention discloses a constant-temperature incubator for cell culture and relates to the technical field of bioengineering devices. The constant-temperature incubator comprises an incubator body, a placing table is arranged in the incubator body, an air inlet is formed in the incubator body, a rotating shaft is arranged in the incubator body, a turntable is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected with a breather pipe through a linear bearing, an air outlet is formed in the incubator body, and a linkage mechanism is arranged in the incubator body. By arranging a piston, a conductive rod and a ventilating fan, an air pressure difference generated when gas components in the constant-temperature incubator change pushes the piston to drive the ventilating fan to work, so that gas exchange occurs inside and outside the constant-temperature incubator to maintain an oxygen concentration in the incubator, cell culture is always in air with a proper oxygen concentration, the ventilating fan can be automatically turned off after gas exchange is completed, and thus energy consumption is reduced.

The invention belongs to the field of fruit processing, and particularly discloses a kiwi wine processing device comprising a frame, a stirring tank is rotatably connected to the frame, a stirring shaft is rotatably connected in the stirring tank, and a first stirring blade is arranged on the stirring shaft in the circumferential direction. The inner wall of the stirring tank is provided with spikes, and the upper part of the side wall of the stirring tank is provided with an air outlet; the kiwi wine processing device also comprises a planetary gear train, an adjusting unit and a fixing unit;the lower end of a planetary carrier extends into the stirring tank, and the portion, that protrudes into the stirring tank, of the planetary carrier is provided with a second stirring blade; the portion which is located outside the stirring tank, of the planetary carrier is fixedly connected with a cylindrical cam, the adjusting unit comprises a handle pivotally connected to the frame, and the fan gears are fixedly connected at both ends of a rocker; the fixing unit includes a first rack and a second rack, the outer wall of the stirring tank is provided with a first limiting hole matched with the first rack, and the planetary carrier is provided with a second limiting hole matched with the second rack. Requirements that kiwifruit crushing and fermentation share one device are satisfied.

The invention relates to a wire take-up device for a non-binding steel stranded wire. According to the wire take-up device, the defects in the prior art that a greater frictional force is generated between a fixed inner-diameter fixing post and a steel stranded wire disc, and the steel stranded wire disc cannot be smoothly taken down. The wire take-up device comprises a base and a rotating disk which is arranged on the base and can be rotated; an inner-diameter upright post is hinged to the rotating disk; a central post is arranged at the middle position of the rotating disk; a detachable radial rod is arranged between the upper end of the inner-diameter upright post and the central post. The inner-diameter upright post can rotate relative to the rotating disk; after the steel stranded wire is wound, the inner-diameter upright post rotates relative to the rotating disk and further can be separated from the inner diameter of the steel stranded wire disc, so that the taking of the steel stranded wire disc is facilitated; meanwhile, great force is not applied in a taking-out process, so the damage to a PE extrusion molding casing pipe on the surface of the steel stranded wire is avoided.

The invention discloses a fast opening and closing gate valve with pendulum in the middle chamber, which comprises a gate valve body, a gate valve cover, a driving valve rod and a gate valve middle chamber. The drive valve rod runs through the gate valve cover, the middle part of the inside of the runner is provided with a movable connection sleeve, the lower end of the movable connection sleeve is evenly distributed with limited blocks, and the lower part of the gate valve cover is provided with Connecting the tooth groove, the right side of the first movable shutter is provided with a second movable shutter, and the side of the second movable shutter is provided with a flexible graphite sealing gasket. The pendulum-type fast opening and closing gate valve in the middle cavity is equipped with a first movable gate and a second movable gate for synchronous parallel swing opening and closing. The limit block of the movable connection sleeve can facilitate the flexible limit of the device and improve the practicability of the device.

The invention provides a ceiling fan blade structure and a ceiling fan. The ceiling fan blade structure comprises at least one fan blade and a mounting plate; first inserting parts are arranged on the fan blades, and second inserting parts are arranged on the mounting plate; the mounting plate and the fan blades can be detachably connected through cooperation of the first inserting parts and the second inserting part; and according to the scheme, the mounting manner of the fan blades is changed, connecting parts used in an existing fan blade assembly scheme are removed, the first inserting parts are arranged on the fan blades, the second inserting parts are arranged on the mounting plate, and through corresponding inserting of the first inserting parts and the second inserting parts, assembling of the fan blades and the mounting plate can be rapidly completed; and due to design, the number of parts of the ceiling fan blade structure is small, the cost is low, when the fan blades are assembled, assembling operation can be completed without assistance of auxiliary tools, assembly operation is simple, and spent time is short.

The invention discloses an array antenna for 5G communication. The array antenna comprises a plurality of active array modules arranged in an array, each active array module comprises substrates, every two adjacent substrates are fixedly connected through a connecting piece, connecting grooves are formed in the tops of the substrates, the connecting grooves of every two adjacent substrates are connected, and the connecting piece comprises a connecting plate; the connecting plate is located between the connecting grooves of every two adjacent substrates, a transverse sliding groove is formed in the bottom of the connecting plate, two transverse sliding blocks are arranged in the transverse sliding groove, compression springs are connected to the outer sides of the transverse sliding blocks, inserting grooves corresponding to the transverse sliding blocks are formed in the bottoms of the connecting grooves, and inserting plates located in the inserting grooves are arranged at the bottoms of the transverse sliding blocks; and a clamping hook is arranged on the inner side of the bottom end of each inserting plate, a clamping table connected with the clamping hook in a buckled mode is arranged on the groove wall of the inserting groove, a first inclined surface is arranged on the inner side of the clamping hook, and a second inclined surface corresponding to the first inclined surface is arranged on the clamping table. The invention aims to provide the array antenna for 5G communication. The array antenna is convenient to disassemble and assemble and reliable in connection.

The invention discloses a gas cooking range with an adjustable flame jetting face. The gas cooking range comprises a support. The middle of the support is provided with a fixed ring. A rotation shaftis arranged in the fixed ring. The upper end of the rotation shaft is provided with a worm. The lower end of the rotation shaft is provided with a first gear. The external annular array of the supportis provided with at least three guiding slides. A bracket is slidingly arranged in each guiding slide. The upper end of the support is provided with a center seat through a connection rod. A center ring is arranged on the center seat.

The invention discloses a diesel engine air guide device for agricultural machinery. The diesel engine air guide device comprises an air guide channel, wherein a fan is arranged in the air guide channel, a filter screen is fixedly connected to the interior of the air guide channel, the top end of the air guide channel is connected with a transmission rod through a driving mechanism, one end of thetransmission rod is fixedly connected with a sliding rod, the surface of the sliding rod is connected with a transverse sliding rail in a sliding mode, the bottom end of the transverse sliding rail is fixedly connected with a movable rod, the bottom end of the movable rod is fixedly connected with a cleaning rod, the bottom end of the cleaning rod is fixedly connected with a piston rod, the bottom end of the air guide channel is fixedly connected with a connecting box, the bottom end of the interior of the connecting box is fixedly connected with a piston cylinder, a plurality of connecting plates are symmetrically connected to the inner wall of the air guide channel, a plurality of protruding blocks are fixedly connected to the surfaces of the connecting plates, and silencing mechanismsare symmetrically connected to the interiors of the protruding blocks. The diesel engine air guide device has the advantages that the filter screen can be cleaned in time, the filter screen is prevented from being blocked by dust accumulation, and the noise of the air guide device can be reduced.

The invention discloses a sawtooth-shaped cutting steel wire with a flat section. The sawtooth-shaped cutting steel wire comprises a cutting steel wire body, wherein the cross section of the cutting steel wire body is flat; the cutting steel wire body is in continuous sawtooth-shaped distribution along the axial direction; the length of a short sawtooth edge of each sawtooth in the cutting steel wire body is 1 / 3-1 / 2 time of the length of a long sawtooth edge of each sawtooth; the height of each sawtooth is 0.15-0.3 time of the height of the flat cross section of the cutting steel wire body; a ratio of the width to the height of the flat cross section of the cutting steel wire body is 0.7-0.9. The sawtooth-shaped cutting steel wire with the flat section has the advantages that due to the flat arrangement of the cross section of the cutting steel wire, the phenomenon of self-rotation of the cutting steel wire in a main roller guide slot in a cutting process is avoided; line marks on the tail part of a silicon crystal cutting surface are reduced, the surface smoothness of the silicon crystal cutting surface is improved, and the cutting stability of the cutting steel wire is further improved; furthermore, due to the continuous and uniform sawtooth-shaped arrangement of the cutting steel wire along the axial direction, the silicon stick feeding speed of the cutting steel wire is increased, and the cutting efficiency is improved.

The invention provides a rotary LED fluorescent lamp cap which comprises an end cover and a cylindrical base. Electrodes are arranged on the outer surface of the end cover and are connected with a power line. The rotary LED fluorescent lamp cap is characterized in that a gear is fixed to the inner surface of the end cover, one end surface of the gear is in contact with the inner surface of the end cover, an elastic retaining pin is perpendicularly arranged in the middle of the other end surface of the gear, a mounting support is fixed into the base, a mounting hole is arranged in the middle of the mounting support, elastic limiting lugs are arranged on the inner wall of the base, the gear is arranged in the base, the elastic retaining pin on the gear is rotatably clamped in the mounting hole on the mounting support, and the elastic limiting lugs are abutted onto teeth of the gear. The rotary LED fluorescent lamp cap has the advantages that the orientation of an LED fluorescent lamp tube can be adjusted by the rotary LED fluorescent lamp cap, and the illumination range of the LED fluorescent lamp tube is expanded.

The invention relates to an installing support, in particular to a fire protection pipeline installing support. The fire protection pipeline installing support can lower the labor intensity and improve the installing efficiency. According to the technical scheme, the fire protection pipeline installing support comprises a support plate, first struts, universal wheels, a bearing, a first hollow pipe, a second strut, a first directional wheel, a first support, a second directional wheel and the like; and four first struts are correspondingly installed at the front and rear parts of the left andright sides of the bottom of the support plate, the universal wheels playing a role of moving are rotatably installed at the bottom of the first struts, and the bearing is installed at the middle partof the top of the support plate in an embedding mode. The fire protection pipeline installing support can perform installation and support on fire protection pipelines through a concave groove plate,so that people are freed from delivering and supporting the fire protection pipelines with hands, the labor intensity is lowered, and the installing efficiency is improved; and a first spring enablesa hollow clamping block to be in contact with a ratchet wheel constantly, so that the ratchet wheel is prevented from rotating voluntarily.

The invention discloses a fumigation treatment instrument for the gynecology department and relates to the technical field of medical equipment. The instrument comprises a base box, a first fixing rack and a second fixing rack are fixedly connected to the front and rear sides of the top of the base box respectively, and a fumigation box is rotatably connected between the first fixing rack and thesecond fixing rack; supporting racks are fixedly connected to the left and right sides of the fumigation box, sliding blocks are slidingly connected into the supporting racks, and a first air cylinderand a second air cylinder are fixedly connected to the left and right sides of the top of the base box respectively; the top of the first air cylinder and the top of the second air cylinder are fixedly connected with the bottoms of the sliding blocks. According to the fumigation treatment instrument for the gynecology department, the rotation angle of the fumigation box can be adjusted through the first air cylinder and the second air cylinder, by cooperatively using a leg placement rack and a backrest, a user can sit on or lie on the instrument for fumigation, the user can be more relaxed when using the instrument and cannot feel tired during long-time fumigation, and the instrument is beneficial to better recovery of the user.

The invention discloses a hydraulic tea leaf granule former which comprises a box. A frame is fixedly connected in the middle of the box, a profiling groove is formed in the middle of the frame, a hydraulic female die is movably connected at the upper end of a first hydraulic rod, a hydraulic male die is movably connected at the bottom end of a second hydraulic rod, a tea leaf storage box is fixedly connected on the inner lower side of the box, a discharging device is arranged in the middle of the frame, a limit tenon is rotatably connected with the frame through a rotating button, a discharging pipeline penetrates the right side of the frame and is fixedly connected in the frame, a connecting rod is rotatably connected between a rotating button of a discharging tenon and a rotating buttonof the limit tenon, a clamping groove is formed in the middle of a fixed clamping seat, a clamping block is fixedly connected at one end, close to the hydraulic seat, of the hydraulic female die, a clamping block is fixedly connected at one end, close to the hydraulic seat, of the hydraulic male die, ejector springs are symmetrically arranged at the left end and the right end of each clamping block, and an ejector groove is formed in the inner wall of the fixed clamping seat. The former has the advantages that finished products are simply, conveniently and skillfully conveyed outside the boxand coarsely packaged, a hydraulic mold is conveniently replaced, and lubricating oil is conveniently and rapidly added.

The invention discloses automatic block forming equipment having a fishing function. The automatic block forming equipment comprises a machine frame, wherein an upper bottom plate, a grinding mechanism, a material storing tank and a block forming and shaping bin are arranged on the machine frame; the grinding mechanism consists of a grinding cylinder and grinding disks; the lower end of the grinding cylinder is connected with a rubber baffle; a grinding telescopic air cylinder is connected to the grinding cylinder; a through hole is formed in the lower end of the grinding cylinder; a discharging outlet is formed in the material storing tank; an upper grinding disk and a lower grinding disk are connected with the grinding motor; a shaping tank box is arranged at the lower end of the block forming and shaping bin; a steam connector is formed in a braising tank; sliding seats are arranged on the braising tank; a rack plate is connected to each sliding seat; a lifting fishing disk is arranged at the lower end of the rack plate; a rotating shaft is arranged on the braising tank; a gear component is fixed to the rotating shaft; and a hand wheel is arranged at the tail end of the rotatingshaft. The invention aims to provide the automatic block forming equipment having a fishing function, in accordance with the above problems, so that integrated operation is realized; and the whole processing technical procedure is under an aseptic environment, so that the working efficiency and the quality of finished products are improved.

The present invention relates to a display cabinet for selling electronic products. The display cabinet comprises a base, a disc, material placing plates, a first support, a supporting mechanism and a driving mechanism, wherein an upper portion of an outer wall of which is connected to a frame; the disc is rotationally connected to an upper part of the outer wall of the base; the top of the disc is connected with a plurality of material placing plates capable of placing mobile phones; the middle of the top of the disc is connected with the first support, and an upper portion of the first support is connected with a plurality of display panels capable of pasting mobile phone related introductions; the supporting mechanism is arranged on one side of an outer wall of the base and used for a customer to sit; and the driving mechanism is arranged in the base, and the driving mechanism is in transmission connection with the disc. The display cabinet is advantaged in that multiple mobile phones can be placed on the multiple material placing plates, so the mobile phone display device can display the multiple mobile phones, the disc can be driven to rotate through the driving mechanism, the mobile phones can be rotationally displayed, and customers can sit on the supporting mechanism to select the mobile phones; and the customers can be supported through the supporting mechanism, so the customers are prevented from feeling tired after standing for a long time.

The invention discloses a soil sample treatment device based on heavy metal detection, and relates to the technical field of soil detection. The device comprises a heating barrel and a heating bowl fixed on the heating barrel; a water inlet is formed in the bottom side surface of the heating barrel, and an L-shaped overflow pipe is fixed in the heating barrel; an electric heating unit and a temperature sensor are further arranged in the heating barrel, and the electric heating unit and the temperature sensor are both connected with a controller, and the electric heating unit and the temperature sensor are both connected with a power supply; an outer edge is arranged on the peripheral side of the heating bowl, and a plurality of fixing flanges are arranged on the edge of the outer edge andare in threaded connection with fixing screws; and blind holes matched with the fixing screws in position are formed in the outer side wall of the heating barrel. While drying is conducted through thecombined use of the heating bowl, the heating barrel, an end cover and a moisture absorption device, the problem that secondary cross contamination is likely to be caused in the existing drying process is solved.

The invention discloses a strong drive type household elevator, which comprises a guide shoe mounted on a car frame. The guide shoe comprises a base, an adjustment mechanism and an idler wheel assembly; a reinforcing plate is arranged at the top of the base, and the adjustment mechanism comprises a screw rod and two supporting plates; the bottoms of the supporting plates are provided with first sliding blocks connected with the base, and the side parts of the supporting plates are provided with second sliding blocks penetrating through the reinforcing plate; a strip-shaped sliding groove allowing the second sliding blocks to penetrate through is formed in the reinforcing plate, and the screw rod penetrates through the second sliding blocks on the two supporting plates; the two second sliding blocks are provided with threaded holes correspondingly, wherein the threaded holes allow the screw rod to penetrate through and are in threaded connection with the screw rod, and the thread rotating directions of the threaded holes of the two second sliding blocks are opposite; and the idler wheel assembly comprises two idler wheel mounting frames connected with the two supporting plates in aone-to-one correspondence mode, and idler wheels are mounted on the idler wheel mounting frames. According to the strong drive type household elevator, by arranging the guide shoe with the idler wheels, abrasion between the guide shoe and a guide rail is reduced, the distance between the idler wheels can be adjusted, and thus the guide shoe is conveniently mounted.

The invention provides a stator coil tightening device and coil tightening method for a motor. The tightening device comprises a guide disc, a driving rotary disc and a pushing mechanism; the inner ring of the upper surface of the guide disc is provided with a circle of insertion pipe into which the first bottom pin of a U-shaped coil can be inserted; a plurality of first guide slide grooves are formed in the guide disc; the driving rotary disc is arranged below the guide disc; a plurality of second guide slide grooves are formed in the driving rotary disc; the pushing mechanism is provided with a plurality of push rods; each push rod penetrates through the corresponding first guide slide groove and second guide slide groove at the same time and can move in the first guide slide groove andthe second guide slide groove; and the driving rotary disc rotates relative to the guide disc to drive the push rods in the first guide slide grooves and the second guide slide grooves to move from outside to inside so as to push the second bottom pin of an outer ring to rotate towards the inner ring. According to the device, a coil barrel is tightened in a mechanical mode, and therefore, tightening efficiency is greatly improved, and meanwhile, coil deformation can be effectively avoided.

The invention provides a limiting type rocket separation impulse providing device based on a spring. The limiting type rocket separation impulse providing device comprises a sleeve and an ejector rod located in the sleeve, one end of the ejector rod extends out of the sleeve, the outer side of the other end of the ejector rod is sleeved with the spring, and a polygonal limiting section is arranged on the outer side wall of the ejector rod. A cavity section matched with the polygonal limiting section in shape is arranged in an inner cavity of the sleeve, limiting holes capable of being matched with a positioning pin are formed in the outer side wall of the ejector rod and the side wall of the sleeve respectively, and the center distance between the limiting hole in the ejector rod and the limiting hole in the sleeve is equal to the working stroke of the spring. The device can ensure that the ejector rod only moves in the axial direction to push the separation section of the rocket along with gradual release of the compression spring, and therefore separation impulse loss is prevented.

The invention relates to a cleaning box, in particular to a scalpel preliminary cleaning box. The technical effects that through the provided scalpel preliminary cleaning box, scalpels can be prevented from colliding with each other in the cleaning process, multiple scalpels can be simultaneously cleaned, and the cleaning time is shortened are achieved. According to the technical scheme, the scalpel preliminary cleaning box comprises a frame body, foot pads, a circular ring, a grip, an insertion rod, a first connecting rod, a first sliding block and the like; a placement device comprises a placement plate, a second sliding rail, a bolt, a cushion block, a second sliding block, a spring and a guide rod; the foot pads are arranged on the front portion and the rear portion of the left side and the right side of the bottom of the frame body; the circular ring is arranged on the lower portion of the right side of the frame body; and the grip is arranged at the inner top of the circular ring. By forming a plurality of placement grooves, the multiple scalpels can be cleaned simultaneously, the cleaning efficiency is improved, through the arranged cushion block, the right portion of a screen board can be adjusted and fixed as required, and thus the right portion of the screen board is prevented from tilting after adjustment.

The invention discloses a portable type double-rail curtain rod control system and an operation method thereof. The portable type double-rail curtain rod control system comprises a first shell and a second shell, wherein separation plates are fixedly connected in the first shell and the second shell; prisms are arranged in the first shell and the second shell and are located at front and rear sides of the separation plates in a rotary connection manner; a first rotary sleeve and a second rotary sleeve are fixedly connected with one side of the two prisms respectively; the left side of the surface of the first rotary sleeve is fixedly connected with a pulling bead sleeve; the right side of the top of the first shell is hinged to the left side of the top of the second shell through a hinge;a limiting sleeve is fixedly connected with the right side of an inner wall of the first rotary sleeve; the portable type double-rail curtain rod control system relates to the technical field of furniture. According to the portable type double-rail curtain rod control system and the operation method thereof, two pieces of curtain cloth are mounted on the first rotary sleeve and the second rotary sleeve respectively in different forms, and strips on the surfaces of the two pieces of curtain cloth are staggered; different brightness can be adjusted through lowering the curtain cloth with different quantities, and a visual angle and a visual range are not influenced.

The invention discloses a multifunctional portable gas stove which comprises a stove body. A portable gas stove body is slidably inserted in the inner wall of the stove body. A fuel bottle fixedly adheres to the outer surface of one end of the stove body through a double-sided adhesive. The fuel bottle fixedly communicates with the gas inlet end of the portable gas stove body through a gas pipe. The multifunctional portable gas stove achieves the effect of conveniently and stably supporting the stove body. During supporting, threaded pipes are taken out from elastic snap rings, the threaded pipes drive U-shaped blocks at the top ends of threaded rods to expand, meanwhile, first torsion springs apply elastic force to the outer sides of the threaded rods and are finally blocked by limiting rods, the four threaded pipes and the threaded rods are expanded in a splayed mode, and fixing cones distributed in a splayed shape can effectively improve the stability of the stove body. Meanwhile, the height and balance performance of the stove body can be adjusted by rotating the threaded pipes, and the applicability of the stove body is enhanced. When the portable gas stove is not used, the threaded pipes can be rotated and reset and then pressed into the elastic snap rings after being hinged, so that the portable gas stove has the advantages of being convenient to use and convenient to carry.