137results about How to "Prevent impact phenomenon" patented technology

The invention discloses a floating-type cushion cylinder, comprising a cylinder barrel, a cylinder bottom head, a piston rod and a piston; wherein, the piston rod is extended back to front; a back end surface of the piston rod is provided with a cushion plunger which is in integral structure with the piston; the cylinder bottom head is provided with stepped holes which are located on the same axes with the piston rod; the diameter of a small hole of the stepped holes is larger than the external diameter of the piston rod, while a big hole of the stepped holes is internally provided with a cushion collar and an internal circlip which is used for preventing the cushion collar from sliding out in a floating manner; the cushion collar is provided with a cushion hole; a cushion gap is formed between the excircle of the cushion plunger and the cushion hole after the cushion plunger is driven by hydraulic oil to enter into the cushion hole. In the invention, the cushion collar is designed in a floating type, so when entering into the cushion hole, the cushion plunger can be automatically centered to reduce the cushion gap, thus having better cushion effect, effectively preventing striking when the cylinder cushion retracts to the cylinder bottom; and the cylinder has fine initiation. The invention is simple in structure and strong in practicability.

The invention provides an eccentricity detection method for a washing machine. The method comprises the following steps: S1, entering a washing procedure; S2, reading the value of an acceleration sensor to obtain an inclination angle of a corresponding outer drum; S3, judging whether the inclination angle of the outer drum is greater than a preset value; S4, if the judgment result is yes, controlling a motor to perform a certain period of time of eccentric treatment, then returning to S3, and if the judgment result is no, entering next step; S5, judging whether the washing time is ended; and S6, if the judgment result is yes, detecting and correcting the inclination angle and then ending the washing procedure, and if the judgment result is no, returning to S2. The method provides an active detection mode, namely whether the washing machine is eccentric during washing and bleaching is detected by utilizing the acceleration sensor, and the corresponding eccentric treatment is performed if the washing machine is eccentric, so that a drum collision phenomenon caused by high eccentricity during dewatering in the washing machine is avoided, and the service life of the washing machine is prolonged.

The invention discloses a coiling machine which is used for producing biodegradable films and is convenient for disassembly of a coiling block. The coiling machine comprises a bottom plate; a coiling block body is arranged on the top of the bottom plate; a clamping groove is formed in the left side of the coiling block body; a first support post is fixedly connected to the right side of the top of the bottom plate; a baffle plate is fixedly connected to the right side of the first support post; a motor is arranged on the top of the baffle plate; the output end of the motor penetrates through the first support post, extends to the outer part of the first support post, and is fixedly connected with a transmission plate; and the left side of the transmission plate penetrates through the coiling block body and extends to the inner part of the coiling block body. Through cooperative use of a forward-and-reverse thread screw rod, a bearing, threaded sleeves, pushing blocks, sliding rods, sliding grooves, rolling grooves, rollers, a support leg, a clamping rod, a spring and the clamping groove, the effect of the coiling machine used for producing the biodegradable films that the coiling block is convenient to disassemble is reached, so that the problems that the coiling block is not convenient to disassemble, and thus when a user disassembles the coiling block which coils the films, a large amount of time is wasted, and production efficiency is lowered are solved.

The invention discloses a grinding device for the inner wall and the outer wall of the pipe opening of a steel pipe. The grinding device comprises a base, steel pipe supports fixed to the base and used for supporting and rotating the steel pipe, a grinding assembly and a rotating assembly, wherein the grinding assembly and the rotating assembly are arranged on one side of the steel pipe supports. The grinding assembly comprises a machine frame, a drive device arranged in the machine frame, a transmission mechanism arranged in the machine frame, and two grinding wheels arranged on the outer side wall of the machine frame and driven by the drive device and the transmission mechanism to rotate. The rotating assembly extends into the machine frame. The whole machine frame is driven by the drive device to rotate. The two grinding wheels are fed to the steel pipe placed on the steel pipe supports to grind the pipe opening of the steel pipe. The two grinding wheels are arranged, and therefore the inner wall and the outer wall of the steel pipe can be ground at the same time, and the work efficiency is greatly improved; and in addition, the rotating assembly is arranged, and therefore the two grinding wheels can make contact with the inner wall and the outer wall of the steel pipe at the same time, and the grinding quality can be ensured.

The invention discloses a platform with adjustable height for an agricultural machine. The platform comprises a bottom box, wherein fixed columns are respectively and fixedly connected to two sides of the bottom of an inner cavity of the bottom box; a motor is arranged at the top of each fixed column; a first helical gear is fixedly connected to the output end of each motor; first bearings are respectively and fixedly connected to two sides of the bottom of the inner cavity of the bottom box; in addition, each first bearing is located on one side, close to the bottom box, of the corresponding fixed column; a threaded rod is fixedly connected to the top of each first bearing. According to the platform disclosed by the invention, by arrangement of the motors, the first helical gears, the first bearings, the threaded rods, second helical gears, sliding chutes, a sliding rod, a lifting plate, threaded holes, second bearings and a supporting rod, the platform for the agricultural machine realizes an effect of adjusting the height during use, thereby effectively solving the problems that the height of an ordinary platform for the agricultural machine cannot be adjusted when the ordinary platform is used, so that the agricultural machine is tedious to use and much time of a user is wasted.

The invention relates to an auxiliary packing machine for cigarette packet transparent paper and a cigarette packet conveying system thereof. An outlet of a host packing machine is connected with a differential transverse conveying belt moving toward the same direction as cigarette packets, and the rear part of the host packing machine is connected with a cigarette packet down-slide groove plate which is connected with a transverse conveying belt, wherein the rear part of the transverse conveying belt is connected with a turning corner, and the rear part of the turning corner is connected with a barrel-shaped cigarette packet down-slide channel. The auxiliary packing machine is provided with an on-board transverse conveying belt which is connected with an outlet of the down-slide channel and a lifting mechanism, wherein a cigarette pulling mechanism is arranged above the lifting mechanism; a pulling block is jointed with the rear side of the lifted cigarette packet; a joint cycle of the pulling block and the lifted cigarette packet is synchronous with a reciprocating cycle of the cigarette packet lifting mechanism. A conveying mode of vertically lying and longitudinally arraying of the cigarette packets is changed into a conveying mode of transversely lying so as to avoid the hitting of both ends of the cigarette packet during conveying. After entering the auxiliary machine, the cigarette packets are conveyed by the on-board transverse conveying belt, thus, the cigarette packets transversely enter a cigarette pressing mechanism of the auxiliary machine so as to avoid the hitting of one end of the cigarette packet with a positioning plate. The invention can thoroughly avoid the defects of 'empty ends' and interconnection of the cigarettes.

The invention discloses a building material cutting device with a convenient clamping function. The cutting device comprises a bottom box. An electric telescopic rod is fixedly connected with the left side of the top of the bottom box. A transverse plate is fixedly connected with the top of the electric telescopic rod. A first motor is arranged on the right side of the bottom of the transverse plate. A cutting plate is fixedly connected with the output end of the first motor. A second motor is arranged at the bottom of the inner wall of the bottom box. A disc is fixedly connected with the output end of the second motor. An oval groove is formed in the front face of the disc. The two sides of the inner wall of the oval groove are moveably connected with transmission shafts. By arranging the second motor, the disc, the oval groove, the transmission shafts, a connecting rod, a pushing rod, rolling wheels, a connecting block, a pushing plate, a sliding block, a sliding groove, a lifting rod, a spring and a clamping block for coordinate application, the convenient clamping effect is achieved, and the problems that existing cutting devices cannot clamp materials conveniently, consequently, clamping is tedious during application by a user, and lots of time is wasted are solved.

The invention discloses a cutting machine for building materials. The cutting machine comprises a box and is characterized in that an electric telescoping rod is fixedly connected to the left side of the top of the box, a support plate is fixedly connected to the top of the electric telescoping rod, a support rack is fixedly connected to the right side of the bottom of the support plate, a first motor is arranged on the right side of the support rack, and a cutting piece is fixedly connected to the output end of the first motor. The cutting machine has the advantages that by the coordination of the box, the electric telescoping rod, the support plate, the support rack, the first motor, the cutting piece, a second motor, a treaded rod, a threaded sleeve, a connecting rack, sliders, first slide grooves, first connecting blocks, connecting rods, second connecting blocks, a movable plate, slide rods, second slide grooves, a to-be-cut object, a through hole and clamping plates, the cutting machine has a cutting clamping function, and the problems that an existing cutting machine cannot fix materials, is inflexible in operation manner and greatly lowers the work efficiency of a user during cutting are solved.

The invention discloses a dust removal device for textile machinery, which comprises a box body, bases are fixedly connected to both sides of the bottom of the box body, a connecting block is fixedly connected to the bottom of the base, and the bottom of the connecting block passes through a rotating shaft A support is movably connected, and the back of the support is movably connected with a first roller through a rotating shaft; the right side of the box body is fixedly connected with a casing. The present invention uses a box body, a base, a connecting block, a bracket, a first roller, a sleeve, a chute, a first electric telescopic rod, a support plate, a horizontal plate, an air inlet box, a cushion block, a filter plate, a first fan, and a dust removal box. , the second blower fan, hose, wind cover, second electric telescopic rod, fixed block, second roller, sliding rod and buffer pad are used together, which has the advantages of efficient dust removal, and solves the problem that the structure of the existing dust removal device is relatively simple. It is also inconvenient to move, the effect of efficient dust removal cannot be achieved, it is not convenient for users to use, and the problem of reducing the frequency of use of the dust removal device.

The invention discloses an anti-drop transfer device, which comprises a bottom box, and supports are fixedly connected to both sides of the bottom of the bottom box, rollers are movably connected to the bottom of the support, and supports are fixedly connected to the back of the bottom box plate, the top of the support plate is fixedly connected with a motor, the output end of the motor penetrates the bottom box and extends to the inside of the bottom box and is fixedly connected with a gear, the bottom of the gear is provided with a first toothed plate, the first The tooth plate meshes with the gear. The present invention is used by setting brackets, rollers, support plates, motors, gears, first tooth plates, slide bars, chute, transmission columns, second tooth plates, sliding sleeves, polished rods, transmission rods, movable grooves and blocks. , so that the cart achieves the effect of preventing objects from falling, and solves the problem that the objects cannot be prevented from falling, and the user needs to be careful of objects falling during use, thereby reducing the practicality of the cart.

The invention discloses a mould carving machine with good clamping effect. The mould carving machine comprises a bottom box. The left side of the top of the bottom box is fixedly connected with a first electric telescopic rod. The top of the first electric telescopic rod is fixedly connected with a second electric telescopic rod. The right side of the bottom of the second electric telescopic rod is fixedly connected with a motor. The output end of the motor is fixedly connected with a rotating head. According to the mould carving machine with the good clamping effect, by matching and using of a third electric telescopic rod, a first connecting block, a connecting rod, a second connecting block, a sliding rod, a sliding groove, a light rod, a sliding sleeve, a transmission rod, a movable groove and a fixture, the problem that the clamping effect of an existing mould carving machine is not good, and moving or shaking phenomena are caused during mould carving, a mould is damaged, and a lot of time and financial resources of a user are wasted is solved, the mould carving machine with the good clamping effect has the advantages of being good in clamping effect, the moving or shaking phenomena are prevented during mould carving, the mould is protected, and a lot of time and financial resources of the user are saved.

The invention relates to an automobile seat adjusting device capable of being tilted forward and folded, and provides a seat device. The automobile seat adjusting device can be tilted forward and folded and moved forward to release a space as large as possible to enable rear-row staff to come in and go out, and the operation of the automobile seat adjusting device is labor-saving. The automobile seat adjusting device comprises a seat basin framework, a backrest framework, a rotating handle, and a sliding rail mechanism connected to floors of a compartment, wherein the sliding rail mechanism comprises fixed rails and sliding rails; a four-bar mechanism is jointly formed by the sliding rails, the rotating handle, the seat basin framework and the backrest framework; the rotating handle is connected with the seat basin framework through a hinge, the seat basin framework is connected with the backrest framework through a hinge, the backrest framework is connected with the sliding rails through hinges, and the sliding rails are separately connected with the rotating handle through a hinge; and the automobile seat adjusting device is provided with a locking mechanism.

The invention discloses an environment-friendly bookshelf capable of adjusting the height of a partition, which comprises a bookshelf body, a support plate is fixedly connected to the inside of the bookshelf body, a movable hole is opened at the bottom of the right side of the support plate, and the top of the inner wall of the bookshelf body The left side of the motor is provided with a motor, the output end of the motor is fixedly connected with the turntable, the bottom of the front of the turntable is movably connected with the first connecting rod through the rotating shaft, and the end of the first connecting rod away from the turntable is movably connected with the first connecting block. In the present invention, a motor, a turntable, a first connecting rod, a first connecting block, a second connecting rod, a second connecting block, a transmission column, a transmission frame, a transmission rod, a transmission plate, a sliding rod, a chute and a partition body are provided. Used together, the environmental protection bookshelf can achieve the effect of adjustable partitions, avoiding the non-adjustable partitions inside the ordinary environmental protection bookcases, resulting in the inability to put too large books, thus wasting a lot of time for users and reducing the practicality of the environmental protection bookcases. sex issue.

The invention discloses a cloth clamping device for weaving, which comprises a base, the left side of the top of the base is fixedly connected with a left support plate, the right side of the top of the base is fixedly connected with a right support plate, and the top of the left side of the left support plate is An electric box is fixedly connected, and the inner cavity of the electric box is provided with a motor. The present invention uses a base, a left support plate, a right support plate, a motor, a rotating rod, a cross bar, a reel, a box body, a connecting block, a moving plate, a connecting frame, a first connecting rod, a fixed block, an electric telescopic rod, and a moving rod. , casing, spring, support plate and the second connecting rod have the advantages of stabilizing the curled fabric, and solve the problem that the existing textile winding device cannot clamp the textile when winding the textile, and it needs to be wound manually. When the cloth is wound by driving the reel to rotate, the operation is cumbersome, which reduces the work efficiency, causes the textiles to be easily crumpled after being rolled up, and reduces the quality of the textiles.

The invention discloses a high-efficiency concrete mixer for construction, which comprises a bottom box, a mixing tank is arranged on the top of the bottom box, a first motor is fixedly connected to the top of the mixing tank, and the output end of the first motor runs through the The mixing tank extends to the inside of the mixing tank and is fixedly connected with a stirring rod, both sides of the stirring rod are fixedly connected with stirring blades, the left side of the top of the stirring tank is connected to the feeding hopper, and the bottom of the right side of the stirring tank is connected to the discharge pipe . The present invention solves the problem by setting the sliding rod, the chute, the moving plate, the through hole, the first transmission rod, the second motor, the disk, the second transmission rod, the bearing, the first transmission frame and the second transmission frame. The existing concrete mixer has the phenomenon of uneven mixing, which leads to the problem of slow mixing efficiency. The concrete mixer achieves the effect of efficiently mixing concrete, saves a lot of time for users, and improves the practicability of the concrete mixer.

The invention discloses a textile bobbin convenient to replace. The textile bobbin comprises a bearing table. A polished rod is fixedly connected to the bottom of the inner wall of the bearing table. A trapezoidal block is slidably connected to the surface of the polished rod. An electric telescopic rod is fixedly connected to the bottom of the right side of the inner wall of the bearing table. A support is fixedly connected to the left end of the electric telescopic rod. A rolling wheel is movably connected to the left side of the support. The surface of the rolling wheel makes contact with the left side of the bottom of the trapezoidal block. Connecting plates are movably connected to both the two sides of the front face of the trapezoidal block. According to the textile bobbin, through matched use of the bearing table, the polished rod, the trapezoidal block, the electric telescopic rod, the support, the rolling wheel, the connecting plates, a support plate, a sliding rod, a sliding ring, a spring, a fixed rod, a through hole, a clamping rod, a bobbin body and a clamping groove, the effect of convenient bobbin replacing is achieved, and the problems that an existing bobbin is inconvenient to replace by a worker, textile production efficiency is influenced, and economic benefits of a factory are lowered are solved.

The invention discloses a building material grinding machine capable of adjusting the grinding position. The building material grinding machine comprises a bottom plate. A clamping block is fixedly connected with the right side of the top of the bottom plate. An electric telescopic rod is fixedly connected with the left side of the top of the bottom plate. An adjusting box is fixedly connected with the top of the electric telescopic rod. A first motor is fixedly connected with the left side of the top of the adjusting box. By arranging the adjusting box, the first motor, a transmission rod, a first bevel gear, a bearing, a partition plate, a threaded rod, a second bevel gear, a threaded sleeve, a movable rod, a movable hold and a second motor for coordinate application, the problems that existing building material grinding machines cannot adjust the grinding position, consequently, a user needs to adjust the grinding position manually during usage, lots of time is wasted, and the practicability of the building material grinding machines is reduced are solved. The building material grinding machine capable of adjusting the grinding position has the advantage that the grinding position can be adjusted.

The invention provides an aerial photograph central type shutter mechanism and belongs to the technical field of structural design of aerial cameras. The central type shutter mechanism comprises main parts including a high-speed motor, a one-circle clutch, a driving wheel system, two blades and the like. The invention adopts a technical scheme that: the motor is used for driving the two blades to continuously rotate so as to increase speed and efficiency; the one-circle clutch is used for controlling an exposure period; the carbon fiber(M40) blades with enough rigidity and size stability are used so as to solve the problem of narrow air space in an objective lens; and by adjusting the position of a photoelectric pair, the photoelectric pair can precisely transmit pulses at the exposure starting time and the exposure ending time. The central type shutter mechanism has the advantages that: the high-speed motor is combined with the one-circle clutch, so that the problem that the high-speed motor is difficult to control with the instant acceleration and the instant speed reduction is solved; and the rotary speed of the blades is adjusted by changing the rotary speed of the high-speed motor, so that the impact is avoided so as not to damage the central type shutter mechanically and improve image quality. Because an interface of the mechanism is changed, the mechanism can be applied to other cameras.

The invention discloses a guide pipe fixing structure. The guide pipe fixing structure comprises an automobile body. The bottom of the automobile body is fixedly connected with a fixing box. A rotarydisc is arranged at the top of the left side of the fixing box. The right side of the rotary disc is fixedly connected with a transmission pillar. The right end of the transmission pillar penetrates through the fixing box and extends to a first gear fixedly connected inside the fixing box. Through cooperative use of the fixing box, the rotary disc, the transmission pillar, the first gear, a firstbearing, a second bearing, a positive and negative threaded rod, a second gear, a movable groove, a threaded sleeve, a movable rod and a fixed block, the problems that an existing guide pipe fixing structure is poor in fixing effect, consequently a guide pipe is prone to falling off during driving of an automobile, and the creativeness of the guide pipe fixing structure is lowered are solved. Theguide pipe fixing structure has the advantage of being good in fixing effect, the phenomenon that the guide pipe falls off during driving of the automobile is prevented, and the creativeness of the guide pipe fixing structure is increased.

The invention discloses a rice screening machine convenient to disassemble a screen. The machine comprises a screening box; the internal of the screening box is movably connected with a screen body; a clamping groove is formed in the left side of the screen body; the top of the left side of the screening box is fixedly connected with a clamping box; the top of the left side of the clamping box is fixedly connected with a fixed block; the left side of the fixed block is movably connected with a fixed rod; the bottom of the fixed rod is movably connected with a thread rod; a fixed groove is formed in the top of the thread rod; and the fixed groove is movably connected with the fixed rod. As the clamping groove, the fixed block, the fixed rod, the thread rod, the fixed groove, a bearing, a thread sleeve, a first connecting rod, a second connecting rod, a connecting block and a clamping rod are matched for use, the rice screening machine achieves the effect of more conveniently disassembling the screen, and the problem of wasting a lot of time by users during replacing of the screen due to more complicated disassembly of the screen in a general rice screening machine is effectively solved.

The invention discloses a garden knife convenient for dismounting a blade. The garden knife comprises a handle. The left side of the handle is provided with a blade. The right end of the blade penetrates the right end of the handle and extends to the inside of the handle. The blade is positioned at the bottom of the inner cavity of the handle and provided with a fixed slot. The left side of the bottom of the handle is fixedly connected with a casing. The bottom of the right side of the casing is fixedly connected with a fixed block. Through cooperation use of the handle, the blade, the fixed slot, the casing, the fixed block, a fixed support, a positive and negative threaded rod, a clamping groove, a bearing, thread bushings, first connecting columns, movable rods, first connecting blocks, limiting racks, second connecting blocks, second connecting columns, a movable plate, sliding bars, sliding chutes, a fixed plate and a rotating disk, the blade can be replaced conveniently, and the problems that for an existing common garden knife on the market, the process of replacing a blade is relatively tedious, user's application is influenced, a lot of time is wasted, and working efficiency is reduced are solved.

The invention discloses a length-adjustable winding device for production of textile lining cloth. The length-adjustable winding device comprises a bottom plate, and a first supporting plate is fixedly connected on the right side of the top of the bottom plate; a cross plate is fixedly connected at the bottom of the right side of the first supporting plate; and a motor is arranged at the top of the cross plate. According to the length-adjustable winding device, a first sliding plate, a first sliding groove, a first sliding block, winding roll bodies, a second sliding block, a second supporting plate, a second bearing, a second transmission shaft, a second sliding plate, a second sliding groove, a connecting block, a connecting rod, a threaded rod, a threaded sleeve and a third bearing are matched for utilization, the winding device for production of lining cloth achieves the purpose of adjusting the distance among winding rolls according to the length of lining cloth, and the problems that an operator needs to frequently change the winding rolls, utilization is inconvenient, and practicability of the winding device for production of lining cloth is reduced due to the fact that the distance among the winding rolls cannot be changed according to the length of lining cloth are solved.

The invention discloses an adjustable platform for an agricultural machine. The platform comprises a base tank, a motor is arranged on the right side of the bottom of the inner wall of the base tank, a round plate is fixedly connected with the output end of the motor, a connecting rod is flexibly connected with the top of the front surface of the round plate through a rotary shaft, a lever is flexibly connected with the top of the connecting rod, a pin is fixedly connected with the back surface of the inner wall of the base tank, the back surface of the inner wall of the base tank is flexibly connected with the lever through the pin, a transmission rod is fixedly connected with the left end of the lever, and a transmission pole is fixedly connected with the top of the front surface of the transmission rod. According to the platform, through arrangement of the motor, the round plate, the connecting rod, the lever, the pin, the transmission rod, the transmission pole, sliding grooves, sliding blocks, a transmission board, a transmission groove and a supporting column which are in matched use, the lifting effect of the platform for the agricultural machine is achieved, and the problem is solved that an existing platform for an agricultural machine cannot rise or fall, resulting in that the agricultural machine cannot be learned by a customer comprehensively, so that the practicability of the platform for the agricultural machine is reduced.

The invention discloses a heat preservation material cutting machine capable of being adjusted in the cutting distance. The heat preservation material cutting machine comprises a bottom plate. An electric telescopic rod is fixedly connected on the left side of the top of the bottom plate. A sleeving case is fixedly connected on the top of the electric telescopic rod. A transmission rod is arranged on the left side of the top of the sleeving case. The bottom of the transmission rod penetrates through the sleeving case and extends to the interior of the sleeving case to be fixedly connected with a first bevel gear. The surface, located inside the sleeving case, of the transmission rod is fixedly connected with a first bearing. By matched using of the transmission rod, the first bevel gear, the first bearing, a second bearing, a thread rod, a second bevel gear, a sliding groove, a sliding block, a supporting block, a telescopic column and a thread hole, the cutting machine can be adjusted in cutting distance, and the problem that a common heat preservation material cutting machine cannot be adjusted in cutting distance, so that when a user conducts cutting, a large amount of time is wasted, and the inventiveness of the cutting machine is reduced is solved.

The invention discloses a multi-purpose folding medical rehabilitation nursing bed. The multi-purpose folding medical rehabilitation nursing bed comprises a bed board, wherein connecting plates are fixedly connected to two sides of the bottom of the bed board, movable plates are movably connected to the bottoms of the front sides of the connecting plates, support legs are fixedly connected to thebottoms of the movable plates, sleeves sleeve the surfaces of the support legs, the tops of the sleeves extend to the surfaces of the connecting plates, and sliding chutes are formed in the tops of two sides of the inner wall of each sleeve. For the multi-purpose folding medical rehabilitation nursing bed, through the matched use of the connecting plates, the movable plates, the support legs, thesleeves, the sliding chutes, slide rods, first springs, brackets, rolling wheels, round plates, clamping rods, second springs and clamping grooves, the problem that the existing medical rehabilitationnursing bed does not have the folding, lifting and moving functions, thus the function of the medical rehabilitation nursing bed is single, is solved, the multi-purpose folding medical rehabilitationnursing bed has the advantages of multiple functions and the like, so that the use of users is facilitated, and the practicability of the medical rehabilitation nursing bed is improved.

The invention discloses a 3D printing back drawing motion track planning method. A back drawing motion track is planned between a first track and a second track of 3D printing. The method includes theprocesses that a printing head moves along the first track, and when the printing head does not reach the end point of the first track, the printing head stops conducting discharging in advance; after the printing head moves to the end point of the first track, the printing head turns around back along the first track to reach the position where discharging is stopped in advance; the printing head moves to the position above the outer side of the starting point of the second track from the position above the first track; and discharging begins when the printing head does not reach the starting point of the second track, the printing head is switched to the starting point of the second track with a downward switching inclined angle and moves continuously along the second track. By means ofthe 3D printing back drawing motion track planning method, the printing head stops discharging in advance and turns round back when back drawing begins, and the phenomena of wire drawing and materialaccumulating of back drawing are avoided; and when back drawing is over, the printing head conducts discharging in advance and is switched to the track of the next segment with the inclined angle, the phenomenon of shortage of the printing track due to delayed discharging of the spray head is avoided, large components can be printed, and the component printing quality is greatly improved.

The invention discloses a patient safe transporting device for intensive care. The patient safe transporting device comprises a bed board, wherein connecting plates are fixedly connected to two sidesof the bottom of the bed board, a movable plate is movably connected to the bottom of the front of each connecting plate, a support leg is fixedly connected to the bottom of each movable plate, the surface of each support leg is sleeved with a sleeve, the top of each sleeve extends to the surface of the corresponding connecting plate, and sliding chutes are formed in the tops of two sides of the inner wall of each sleeve. For the patient safe transporting device for intensive care, through the matched use of the connecting plates, the movable plates, the support legs, the sleeves, the slidingchutes, slide bars, first springs, brackets, rolling wheels, round plates, clamping rods, second springs and clamping grooves, the problem that the existing medical rehabilitation nursing bed does nothave the safe transporting function and can not be folded, lifted and moved, consequently, the nursing bed is single in function, is solved, the patient safe transporting device for intensive care provided by the invention has the advantage of multiple purposes, so that the use of a user is facilitated, and the practicability of the medical rehabilitation nursing bed is improved.

The invention discloses a sweet potato sheet jelly cooking device easy to move. The device comprises a cooking device main body. A bottom box is fixedly connected to the bottom of the cooking device main body. The right side of the bottom box is provided with a rotation disc. A first screw is fixedly connected to the left side of the rotation disc. The left end of the first screw passes through the bottom box, extends into the bottom box and is fixedly connected to a second screw. The surface of the first screw in the bottom box is fixedly connected to a first bearing. The device comprises the rotation disc, the first screw, the second screw, the first bearing, a second bearing, a threaded sleeve, a sliding rod, a chute, driving columns, connection blocks, connection rods, transmission holes and rollers. Through cooperation of the above units, the device is easy to move and solves the problem that the traditional sweet potato sheet jelly cooking device is difficult to move so that raw materials need to be moved to a position beside the sweet potato sheet jelly cooking device through a user in sweet potato sheet jelly processing and a lot of time of the user is wasted.

The invention discloses a movable lubricating oil barrel storage and transportation rack in the technical field of lubricating oil transportation. The movable lubricating oil barrel storage and transportation rack comprises a bottom plate, the bottom of the bottom plate is uniformly provided with four wheels, the top of the bottom plate is uniformly provided with a plurality of damping devices andconnected by insertion with a T-shaped threaded rod through a bearing, the top of the damping devices is provided with a support plate, the bottom of the support plate is provided with a threaded hole matched with the T-shaped threaded rod, the support plate is connected with the T-shaped threaded rod through the threaded hole, the top of the support plate is movably provided with a U-frame, theleft inner wall and the right inner wall of the U-frame are symmetrically and respectively provided with three groups of sliding grooves, the left and the right of the U-frame are provided with sliders matched with the sliding grooves, and the top of the U-frame is provided with fixing holes matched with oil barrels. According to the movable lubricating oil barrel storage and transportation rack,storage grooves and the inverted U-frame can avoid falling of the oil barrels during transportation, compressed springs and the damping devices can avoid collision between the oil barrels and the movable lubricating oil barrel storage and transportation rack due to bumping on roads, so that safety of the oil barrels can be guaranteed.