55results about How to "Adjust lift height" patented technology

The present invention discloses an oil cylinder lifting type lift brake test platform which is formed by a reaction drum brake platform, a sensor, a guide rail supporting frame assembly body and an oil cylinder guide wheel assembly body. The sensor and the guide rail supporting frame assembly body are symmetrically arranged at two ends of the reaction drum brake platform, through the matched installation of the guide wheel and the guide rail structure at the inner side of a guide rail supporting frame, the reaction drum brake platform is driven by the oil cylinder to slide up and down along a vertical direction, and the axis of an oil cylinder piston rod and the central axis of a spokewise weighing sensor coincide. According to the oil cylinder lifting type lift brake test platform, a hydraulic cylinder is employed to carry out the overall lifting of the brake test platform, the brake performance of the load condition of a tested vehicle shaft can be detected, and the oil cylinder lifting type lift brake test platform has the advantages of simple structure, high utilization rate of an existing reaction drum brake platform, convenient installation, small land occupation, easy in and out of a vehicle, and the improvement of detection efficiency.

The invention discloses key machining equipment. The key machining equipment comprises a base, a machine frame, a lifting mechanism, a driving mechanism, a clamp assembly and a horizontal movement mechanism, wherein the machine frame is arranged on the base; the lifting mechanism is arranged on the machine frame, a milling tool and a probe are arranged on the lifting mechanism side by side, and the lifting mechanism is used for driving the milling tool and the probe to ascend or descend; the driving mechanism is arranged on the machine frame and used for driving the lifting mechanism to slide up and down relative to the machine frame and positioning the lifting mechanism in a preset position; the clamp assembly is arranged below the lifting mechanism and used for clamping a key sample and a key blank; the horizontal movement mechanism is arranged on the base, the clamp assembly is supported on the horizontal movement mechanism, and the horizontal movement mechanism is used for driving the clamp assembly to horizontally move along the X axis and / or the Y axis. The key machining equipment has the beneficial effects of being good in adjustability, good in controllability, convenient to use and the like.

The invention discloses an aluminum alloy lift. The aluminum alloy lift also comprises a tilt supporting mechanism used for controlling a lifting body to tilt a certain angle; the lifting body comprises more than one mast groups and a supporting frame; each mast group comprises a tail mast, an upper mast, a plurality of middle masts, and a hydraulic cylinder; the masts are arranged from top to bottom, and upper masts can slide vertically along the lower masts; the upper end of each middle mast is provided with a driving sprocket and a sprocket frame; the driving sprocket is fixed on the sprocket frame; one end of a transmission chain is matched with the sprocket, and the other end of the transmission chain is arranged on the next mast; hydraulic cylinders are arranged on a base plate; the heads of the hydraulic cylinders are hinged with a lowermost pair of sprocket frames; the tilt supporting mechanism comprises a power cylinder; a cylinder body of the power cylinder is arranged on the base; and the top of a cylinder rod is connected with the supporting frame. By the structure, the aluminum alloy lift lifts flexibly and can be operated by one person; and the tilt supporting mechanism is arranged, so that the whole lift can tilt a moving angle, and can enter a narrow space for operation.

The invention discloses a thyroid surgery support for clinical surgery and belongs to the technical field of medical instruments. The thyroid surgery support comprises a supporting plate, wherein a head groove is formed in the middle of one side of the supporting plate, head air bags are fixedly connected to two sides of the head groove, a neck groove is formed in one side of the head groove of the supporting plate, a neck air bag I is fixedly connected to the bottom of the neck groove, and neck air bags II are fixedly connected to two sides of the neck groove. A cavity is formed in the otherside of the neck groove of the supporting plate, two ends in the cavity are respectively inserted with shoulder fixing plates, and the ends, located outside the cavity, of the two shoulder fixing plates are respectively fixedly connected with shoulder fixing air bags; the two sides of one end of the cavity of the supporting plate are respectively fixedly connected with a positioning plate I, the portions, at the bottoms of the positioning plates I, of the supporting plate are respectively fixedly connected with a positioning plate II, and the positioning plates II are connected with bolts II through threads. The technical problem is solved that an angle is inconvenient to adjust in the current thyroid operation process.

The invention belongs to the technical field of graphene production, and particularly relates to a graphene preparation system. The system comprises a material shaking module and a crushing module; the material shaking module and the crushing module are located in a closed bin, and the material shaking module is located below the crushing module; the material shaking module is fixedly arranged onthe inner wall of a side plate; the crushing module is fixedly arranged on the lower surface of an upper bottom plate; the material shaking module is used for raising graphite particles, and the crushing module is used for crushing the raised graphite particles; the upper bottom plate is rotationally arranged at the upper end of the side plate, the upper bottom plate drives the crushing module torotate by being matched with a first motor, and a suction cup is arranged at the lower end of a storage cover; the suction cup is fixedly arranged on the upper surface of a lower bottom plate througha first electric push rod; a rubber pad is fixedly arranged on the lower surface of a first installation block. The system is mainly used for preparing graphene, the graphene can be fully crushed, meanwhile, the fine-particle graphene conforming to the size can be filtered in time, and the production efficiency of the graphene is improved.

The invention discloses a lifting device for a coating device and a preparation method of the lifting device. The lifting device for the coating device comprises a workbench, and two lifting bases which are symmetrically arranged are fixedly installed on the top of the workbench; the top of each lifting base is provided with a lifting slide groove; supporting rods are connected in the lifting slide grooves in a sliding manner; the tops of the two supporting rods both extend to the upper portions of the lifting bases; the same adjusting plate is fixedly installed on the tops of the two supporting rods, and the adjusting plate is provided with a spraying pipe; the bottom of each supporting rod is provided with a strip-shaped groove; nuts are fixedly installed in the strip-shaped grooves; andscrews are in threaded connection with the nuts. The lifting device for the coating device is simple in structure, according to a lifting device body, the height of the spraying pipeline is adjustedthrough the mechanical power, adjusting is convenient and fast, manpower is liberated, it is achieved that the compactness of the product spraying face on the workbench is adjusted, and high practicability is achieved.

The invention discloses an electric lifting table. The electric lifting table comprises at least one stand column installed on a wall or a screen, a sliding piece arranged on the stand column and capable of sliding up and down relative to the stand column, a supporting frame connected with the sliding piece and sliding synchronously with the sliding piece and used for allowing the table board to be installed, and a driving device comprising a driving motor, a transmission assembly, a winding mechanism and a winding piece. The driving motor is in transmission connection with the winding mechanism through the transmission assembly, one end of the winding piece is connected with the winding mechanism, and the other end of the winding piece is connected with the stand column. When the windingmechanism rotates, the winding piece is wound on the winding mechanism or released from the winding mechanism and used for adjusting the lifting height of the supporting frame. The electric lifting table is simple in structure, low in noise during lifting, light in weight and convenient to carry, and can be combined with a wall or a screen in a room for use.

The invention discloses a desilting device for a pond. The desilting device comprises a fixed base, a first motor, a rotary shaft, a gear, a rack, a lifting base, a water pump, a connecting tube, a stain absorption tube, a second motor, a connecting rod and a dredge tool bit. The desilting device is delicate in structure, is strong in function, can be firstly used for performing negative-pressure type suction treatment on sludge inside the pond, can realize regulation on lifting height of the device though simple operation, i.e., improves the sludge suction effect; and finally, a dredging device further can be internally arranged according to a practical condition for crushing and breaking aquatic plant inside the sludge. In this way, the desilting device realizes efficient clearing for sludge inside a fish pond.

The invention belongs to the technical field of button attaching machines, and relates to a motor-driven lifting and pressing and thread trimming mechanism for a button attaching machine. An output shaft of a motor is connected with a lifting and pressing and thread trimming driving rod through a transmission assembly, the lifting and pressing and thread trimming driving rod is hinged to a fixed rotating shoulder screw, one end of the lifting and pressing and thread trimming driving rod is connected with a lifting and pressing assembly, and the other end of the lifting and pressing and threadtrimming driving rod is connected with a thread trimming assembly; and the motor is a two-way motor, when a motor shaft rotates in two directions, the motor shaft drives the lifting and pressing and thread trimming driving rod to rotate in different directions around the rotating shoulder screw correspondingly and a lifting and pressing and thread trimming action and a reset action are driven respectively. According to the motor-driven lifting and pressing and thread trimming mechanism for the button attaching machine, impact on related connecting pieces is reduced, noise is lowered, and the service life of products is prolonged.

The invention discloses a halved belt sorting trolley with a liftable conveying surface, a halved belt sorting system and a sorting method thereof. The sorting trolley comprises a chassis, wherein a storage box is arranged on the chassis; a first chain and a second chain which are opposite are rolled in the storage box; the first chain and the second chain are driven by a motor to extend and retract; mutually separated parts of the first chain and the second chain are flexible; mutually engaged parts of the first chain and the second chain define a rigid rod body; the rigid rod body extends tothe outer part of the storage box, and is connected to the bottom of a conveyor; and the conveyor is arranged on a limiting mechanism. The halved belt sorting trolley adopts a special chain, can realize switching needs of a conveying surface of the conveyor at different heights by regulating length of the rigid rod body extending to the outside of the storage box, and creates beneficial conditions for multi-layer grid hole sorting, so that occupied longitudinal space can be effectively reduced by rolling the chains into the storage box under a normal state; and meanwhile, lifting height of the halved belt sorting trolley can be reasonably regulated according to different application occasions.

The invention discloses a flower greenhouse bracket, and relates to the technical field of flower greenhouses. The bracket comprises drainage channel steel and bases; a bearing base is fixedly mountedin the middle of the top of each base, a rotating drum is fixedly connected to the top of each bearing base, a mounting sleeve is arranged in the middle of the bottom of the drainage channel steel, and a retractable rod is inserted in the bottom of each mounting sleeve. By means of the flower greenhouse bracket, a worker conveniently operates the bracket to adjust the lifting height of the bracket, the convenience of the bracket is improved, the labor intensity of the worker is greatly reduced, the bracket is conveniently mounted and dismounted, the later maintenance is facilitated, the function of lifting adjustment is achieved, the worker can change different heights according to the demands of actual situations, the later storage of the greenhouse bracket is facilitated, supporting plates different in specification and size are conveniently mounted, the rigidity and toughness are improved, the collapse of a greenhouse is prevented, the clamping effect is good, and the connection tightness and stability are improved.

The invention provides a pedal lifting adjusting device, which comprises a base, a lifting mechanism and a pedal plate. The lifting mechanism is installed on the base, and the pedal plate is connectedwith the lifting mechanism; the pedal lifting adjusting device further comprises a height adjusting mechanism, the height adjusting mechanism comprises a height positioning piece and a height lockingassembly, the height positioning piece is arranged on the base, and the height locking assembly is arranged on the lifting mechanism; and the height positioning piece is provided with a plurality ofpositioning through holes longitudinally, and the height locking assembly and the height positioning piece are in inserted connection through the positioning through holes so as to adjust the liftingheight of the lifting mechanism. The pedal lifting adjusting device can adjust the lifting height, and thus the demands of a driver for different pedal heights are met effectively.

The invention relates to the technical field of medical instruments, and discloses a medical midwifery apparatus for obstetrics and gynecology department use. The medical midwifery apparatus for obstetrics and gynecology department use comprises a bottom plate; a buttocks lifting plate is arranged above the bottom plate; an adjustment mechanism is arranged at the upper end of the bottom plate at a position corresponding to the buttocks lifting plate, and connects the upper end of the bottom plate with the bottom of the buttocks lifting plate; a head support plate is further arranged at the upper end of the bottom plate; the head support plate is located on the right side of the buttocks lifting plate; two symmetrically arranged T-shaped sliders are fixedly connected with the lower end of the head support plate; two T-shaped chutes, which match the two T-shaped sliders, are formed on the right side of the upper end of the bottom plate; the head support plate is in sliding connection with the bottom plate via the T-shaped sliders and the T-shaped chutes; and a connecting plate is fixedly connected with the head support plate on one side far away from the buttocks lifting plate. The medical midwifery apparatus for obstetrics and gynecology department use is capable of stably fixing a baby's head and pulling the baby out so as to assist a pregnant woman in childbirth process; moreover, the medical midwifery apparatus is also capable of lifting buttocks of the pregnant woman up, thereby reducing amniotic fluid outflow in the pregnant woman so as to avoid interference of the amniotic fluid outflow on midwifery operation of medical staff.

The invention discloses a river sediment content measuring device and method. According to the river sediment content measuring device and method, the problems that in the prior art, manual measurement of the river sediment content is large in danger, large in workload, and low in measurement accuracy are solved, and the beneficial effect of accurately and relatively quickly achieving a river sediment content value is achieved. According to the following scheme, the river sediment content measuring device comprises a shell; the exterior of the shell is provided with a mortar online density measuring instrument and a water depth measuring instrument which are connected with a controller, and the controller is connected with a remote terminal through the Internet of Things; the shell is provided with a water inlet and a drainage port for water feeding and drainage; and a water sucking piece and a water draining piece are arranged in the shell, and both connected with the controller to drive the shell to ascend and descend in a river. Through the mortar online density measuring instrument and the water depth measuring instrument, the content of sediment at different depths is averagedto obtain the average sediment content value of a measured point.

The invention provides a pedal lifting adjusting device, which comprises a base, a lifting mechanism and a pedal plate. The lifting mechanism is installed on the base, and the pedal plate is connectedwith the lifting mechanism; the pedal lifting adjusting device further comprises a height adjusting mechanism, the height adjusting mechanism comprises a height positioning piece and a height lockingassembly, the height positioning piece is arranged on the base, and the height locking assembly is arranged on the lifting mechanism; and the height positioning piece is provided with a plurality ofpositioning through holes longitudinally, and the height locking assembly and the height positioning piece are in inserted connection through the positioning through holes so as to adjust the liftingheight of the lifting mechanism. The pedal lifting adjusting device can adjust the lifting height, and thus the demands of a driver for different pedal heights are met effectively.

The invention discloses an open type wind tunnel lifting system for aircraft testing and a lifting method thereof, and belongs to the technical field of aircraft testing. The system comprises a tool standard knot, a shear fork type lifting mechanism, a fan module and a position monitoring device which are sequentially distributed from bottom to top, wherein the position monitoring device is used for controlling normal operation of each electrical element. The lifting height of the fan module is coarsely adjusted and finely adjusted through the shear fork type lifting mechanism, the large-weight and large-torque fan module is conveyed to a designated position, reliable stability and a positioning function are provided, the shear fork type lifting mechanism adopts a graded lifting process, and the stroke of a single hydraulic shear fork frame is shortened. The lifting height of the fan module can be adjusted, the horizontal rotation angle and the pitching angle of the fan module can also be adjusted, natural wind of various blowing angles can be better simulated, and test data are more comprehensive and accurate.

The invention discloses an automatic lifting mechanism and a filling machine. The automatic lifting mechanism comprises a detecting plate, a detecting switch matching the detecting plate, a central gear, a motor and at least two small gears, wherein the small gears are arranged uniformly along the circumferential direction of the central gear, and the small gears are meshed with the central gear; the small gears are provided with screw studs; each screw stud is provided with a nut in a matching manner; one screw stud is connected with the motor; the detecting plate is arranged on one screw stud. The filling machine comprises the automatic lifting mechanism, a connecting plate, a filling head and a bottle support mechanism; the connecting plate has a perforated filling hole; the filling head is arranged above the bottle support mechanism; the filling head matches the filling hole; the bottle support mechanism is connected with the connecting plate; the connecting plate is connected with the nuts. The automatic lifting mechanism and the filling machine are simple in structure, convenient to install, small in gap adjustment and suitable for the conditions with limited installation space; a tensioning device is unnecessary.

The invention belongs to the field of construction, and relates to the field of power construction, in particular to a large-diameter pipeline transport cart. The large-diameter pipeline transport cart aims to achieve horizontal transportation of a large-diameter pipeline in an existing construction process. The large-diameter pipeline transport cart is composed of a supporting rod, a wheel set and a fixed support frame, wherein the two ends of the supporting rod are respectively provided with a clamping fastener, and the pipeline is fixedly connected with the supporting rod into a movement whole through the clamping fasteners; the wheel set is composed of a set of idler wheels arranged in pairs, and the axes of the two idler wheels are fixed to the two ends of a rotary shaft respectively. After the technical scheme is adopted, actual possibility of ground transportation of the large-diameter pipeline is achieved, and therefore the problem of horizontal torque which is easily caused in a hoisting process is solved, and construction safety and operability are enhanced.

The invention discloses a medical repast device. The medical repast device comprises universal wheels, an I-shaped fixing support, a first telescopic column, a second telescopic column, a large-head nut, a transverse rod and a dining-table plate; the universal wheels are arranged at the four tail ends of the I-shaped fixing support; the first telescopic column and the I-shaped fixing support are fixedly connected; the first telescopic column and the second telescopic column are movably connected; the large-head nut is arranged at the connecting position of the first telescopic column and the second telescopic column; the second telescopic column and the transverse rod are fixedly connected; and the transverse rod and the dining-table plate are fixed. As the universal wheels are adopted in the medical repast device, the medical repast device can be moved at will; and the first telescopic column and the second telescopic column are arranged so that the lifting height can be adjusted, and a patient can conveniently use the medical repast device.

The invention relates to a jacking mechanism. An air cylinder is installed on a bottom plate through a front air cylinder support and a rear air cylinder support, a bearing table is installed above the bottom plate, the front end of a piston rod of the air cylinder is connected to the right side of a Z-shaped connection block, the left side of the Z-shaped connection block is connected to a lifting block, and the lower part of the lifting block is installed on the bottom plate in a sliding mode; a curved surface track formed by sequentially connecting a plane a, a curved surface b, an inclined surface c, a curved surface d and a plane e is arranged at the upper part of the lifting block; a rotating shaft assembly is installed on the curved surface track in a matched mode and comprises a rotating shaft base, rotating shaft fixing blocks, a rotating shaft and a rolling wheel, the rotating shaft base is fixed to the bottom of the bearing table, the rotating shaft is installed on the rotating shaft base through the rotating shaft fixing blocks, and the rolling wheel is arranged on the rotating shaft in a sleeving mode and can roll along the curved surface track. According to the jacking mechanism, the curved surface track on the upper surface of the lifting block drives the rotating shaft assembly to move vertically, different curved surface tracks can be designed for meeting different height requirements, the structure is simple and compact, the height space is saved, and the overall mechanism height is lowered.

The invention discloses an electronic commerce teaching device based on Internet. The electronic commerce teaching device comprises a shell, a through hole is formed in the top of the shell, a rectangular rod is limited and rotated through the through hole, a display screen is fixedly connected to the top of the rectangular rod, a first gear is arranged in the shell, a rectangular hole is formed in the inner wall of the first gear, the inner wall of the first gear is slidably connected with the surface of the rectangular rod through the rectangular hole, the rear side of the first gear is engaged with a first toothed plate, the rear side of the first toothed plate is fixedly connected with a connecting block, the rear end of the connecting block is fixedly connected with a roller, and a cylindrical cam is arranged in the shell; and a rectangular hole is formed in the inner wall of the cylindrical cam, and a second toothed plate and a third toothed plate are limited and slide through the rectangular hole. According to the electronic commerce teaching device, through the cooperative use of the structures, the problems that in the actual use process, a traditional display screen is still inconvenient to adjust, so that the actual use requirement is difficult to meet, and inconvenience is brought to use are solved.

The invention discloses an auxiliary walking device, which comprises a first rotary plate mounted on thighs of a human body, a second rotary plate mounted on calves of the human body, an angle adjusting mechanism, driving machines and an outer shell, wherein a main shaft, a first supporting shaft, a second supporting shaft, a third supporting shaft, a first circular arc hole and a second rotary plate are formed in the surface of the first rotary plate; a first mounting hole, a first rotary shaft, a second rotary shaft and a pressing part are formed in the second rotary plate; the angle adjusting mechanism comprises a rotary disc, a locking plate; and the outer shell is used for accommodating the first rotary plate, the second rotary plate, the angle adjusting mechanism and the driving mechanism. The technical scheme simplifies the structure of the traditional auxiliary walking device, the cost is reduced, the use for users is facilitated, the comfort of the users to use is improved, and the use requirements of different users are met.

The invention discloses an e-commerce teaching device based on the Internet, comprising a casing, a through hole is opened on the top of the casing, and a rectangular rod is fixedly rotated through the through hole, and a display screen is fixedly connected to the top of the rectangular rod , the housing is provided with a gear one, the inner wall of the gear one is provided with a rectangular hole and is slidably connected with the surface of the rectangular rod through the rectangular hole, the rear side of the gear one is meshed with a tooth plate one, and the tooth plate one The rear side of the connecting block is fixedly connected with a connecting block, the rear end of the connecting block is fixedly connected with a roller, and a cylindrical cam is arranged inside the housing, and the inner wall of the cylindrical cam is provided with a rectangular hole and through the rectangular hole, there are teeth Plate two and tooth plate three. The present invention solves the problem of inconvenient use due to the inconvenient adjustment of traditional display screens and difficulty in adapting to actual use requirements during actual use through the cooperative use of the above structures.

The invention discloses jacket layer lifting equipment, which includes a base, a matching component and a top layer module, wherein the base, the matching component and the top layer module are whollyshaped like square sleeves; the upper parts of the base and the matching component are both fixedly connected with a fixing table; a screw rod is in rotary connection with the lower part of the fixing table; the lower parts of the matching component and the top layer module are both fixedly connected with a lifting table; threaded holes are formed in the four corners of the lifting table; a screwrod is in threaded connection with the inside of each screw hole. The jacket layer lifting equipment forms a combination similar to the combination of a sliding groove and a sliding block during theuse to enable the top layer module to stably slide inside the matching component through the cooperation of the base, the matching component and the top layer module, besides, the matching component can stably slide inside the base, so that the inside of the lifting equipment forms a closed space through the combination, as a result, inner power devices of the equipment are not influenced and damaged by the outside, labor maintenance frequency is reduced, and stability and reliability are achieved.

The present invention provides a mattress care device which is provided so as to be capable of moving a mattress downward to a position lower than the top surface of a bed frame, and is provided with a cleaning module which performs sterilization cleaning while moving along the upper portion of the mattress when the mattress is moved downward. Therefore, under the condition that sterilization and cleaning are not carried out, the cleaning module is kept in a hidden state, and therefore the situation that a user possibly feels uncomfortable visually is avoided.

The invention discloses a stirring shaft upper end gas supply cutting device, and belongs to the field of cutting device. The stirring shaft upper end gas supply cutting device comprises a motor, a stirring shaft, a guide seat, and a pedestal; the guide seat is hollow, a step is arranged in the hollow guide seat to divide the guide seat into an upper guiding chamber and a lower gas chamber; in the upper guiding chamber, a spring force adjusting seat, a gap adjusting seat, a return spring, and a bearing positioning seat are arranged successively from top to bottom; the periphery surface of the spring force adjusting seat, and the periphery surface of the gap adjusting seat are connected with the inner surface of the upper guiding chamber through thread connection; a bearing is arranged in the bearing positioning seat; the lower end surface of the bearing positioning seat is provided with a flange matching the step; and dynamic sealing is formed between the bearing positioning seat and the inner wall of the upper guiding chamber, and the flange and the step. According to the stirring shaft upper end gas supply cutting device, gas supply uplifting and return spring down-pressing are adopted to realize rising and falling reciprocating motion of the stirring shaft; the structure is simple; unnecessary energy consumption is reduced; the lifting height of the stirring shaft can be adjusted, and using requirements are satisfied.

The invention discloses a multi-air-duct baking device for production of drinking chrysanthemum tea, and relates to the technical field of baking devices for production of chrysanthemum tea, the multi-air-duct baking device comprises a base plate and a stabilizing device, one side of the top end of the base plate is fixedly connected with a second supporting plate, and the middle of the top end of the base plate is fixedly connected with a first supporting plate; the baking mechanism is located at the top end of one side of the second supporting plate and rotationally connected with the second supporting plate and the first supporting plate. The chrysanthemum baking device has the beneficial effects that when chrysanthemum is baked and placed, the chrysanthemum is subjected to shaping, clamping and fixing, the situation that the chrysanthemum curls in the baking process and influences the attractiveness of manufactured chrysanthemum tea is avoided, energy saving and environment friendliness are achieved during chrysanthemum baking, the lifting height of an airing plate is conveniently adjusted while a chrysanthemum tea discharging valve is opened, and the chrysanthemum tea baking efficiency is improved. And the situation that the baked chrysanthemum tea is collided, scattered and damaged in the discharging and sliding process when the chrysanthemum tea is collected through the discharging materials, and the manufacturing quality of the chrysanthemum tea is affected is avoided.

The invention discloses a stretcher special for a medical ambulance helicopter. A sliding groove is formed in a stretcher body, a slidable sliding bed board is arranged in the sliding groove, and second idler wheels which slide in fourth slide grooves are arranged at the two sides of the sliding bed body respectively; slidable windproof hoods are arranged at the two sides of the stretcher body respectively; first motors for controlling the windproof hoods at the two sides to synchronously slide are further arranged on the stretcher body, the windproof hoods at the two sides correspond to the sliding bed body after being correspondingly connected, windproof cloth capable of stretching out and drawing back is arranged at the two ends of each windproof hood respectively, and the windproof cloth at the two ends corresponds to the sliding bed body after stretching out. Through sliding of the windproof hoods, the harm to a patient caused by wind power generated by the rotation of propellersof the helicopter can be further prevented.

The invention discloses an automatic lifting mechanism and a filling machine. The automatic lifting mechanism comprises a detecting plate, a detecting switch matching the detecting plate, a central gear, a motor and at least two small gears, wherein the small gears are arranged uniformly along the circumferential direction of the central gear, and the small gears are meshed with the central gear; the small gears are provided with screw studs; each screw stud is provided with a nut in a matching manner; one screw stud is connected with the motor; the detecting plate is arranged on one screw stud. The filling machine comprises the automatic lifting mechanism, a connecting plate, a filling head and a bottle support mechanism; the connecting plate has a perforated filling hole; the filling head is arranged above the bottle support mechanism; the filling head matches the filling hole; the bottle support mechanism is connected with the connecting plate; the connecting plate is connected with the nuts. The automatic lifting mechanism and the filling machine are simple in structure, convenient to install, small in gap adjustment and suitable for the conditions with limited installation space; a tensioning device is unnecessary.