63results about How to "Prevent getting stuck" patented technology

The invention discloses a teak low-chipper sprout-promotion rapid-propagation seed-growing method. Seeds are soaked by lime water and gibberellin and then sowed, then seedlings are transplanted into a first nutrition substance container to cultivate mother seedlings to a stage when leaves are mutually overlapped, then the seedlings are graded and arranged according to certain planting space, when ground diameter of the mother seedlings is 0.4-0.8cm, the mother seedlings are planted into a plastic pot with a bottom support to be bred, wherein the mother seedlings are not separated from container cups, and second nutrition substance is arranged in the plastic pot. After 10-15 days, the mother seedlings are cut at a position where base parts of the mother seedling are close to the ground to promote sprouting, collecting cuttings and arranging the cuttings in a container cup provided with third nutrition substances in cottage mode, growing seedlings on an elevated seedling bed in a plastic greenhouse, controlling air temperature and relative humidity of a cottage bed by utilizing a greenhouse temperature and moisture adjuster, and thus obtaining teak container cottage seedlings. By means of the teak low-chipper sprout-promotion rapid-propagation seed-growing method, cottage branches are short, interval time of cutting collection is shortened, breeding efficiency is improved, field condition requirements of nursery gardens are not strict, management is convenient, cutting quality is easy to control, cottage survive rate is high, and economic benefit is good.

The curving operation device of an endoscope is provided with the pulley 26 to be turned by an angle knob 24 and a groove 46 in a helical shape is formed on the outer peripheral surface of the pulley 26. The proximal end parts of a pair of traction wires 28a and 28b are wound from the end parts 46a and 46b of the groove 46 to the groove 46. The distal parts of the traction wires 28a and 28b are extended from the pulley 26 and connected via connecting members 32a and 32b to angle wires 34a and 34b. The traction wires 28a and 28b are constituted by twisting the plurality of wires 56 in the same direction as the winding direction of the groove 46.

The invention discloses a cylindrical cam universal joint type bird imitation flapping wing flight device, and belongs to the field of bird imitation robots. The bird imitation flapping wing flight device comprises a base, wing rods symmetrically distributed on the two sides of the base, and flapping wings linked with the wing rods. A cylindrical cam is arranged in the middle of the base. A largebelt wheel is fixed to the upper portion of the cylindrical cam. A driving motor is slidingly fixed to the middle of the base. An output shaft of the driving motor is connected with a small belt wheel. The large belt wheel is connected with the small belt wheel through a belt. A universal joint connecting rod, a universal joint, a first spring rod, a spring, a second spring rod and a miniature motor are sequentially arranged between the cylindrical cam and each wing rod. The cylindrical cam is driven by the driving motor rotate, then the universal joints and the wing rods are driven to move, and the flapping wings flap up and down; by rotating the miniature motors, the flapping wings turn, and the lift force borne during flight is improved. The bird imitation flapping wing flight device issimple in structure, safe, reliable, high in stability, capable of effectively improving the flapping wing flight efficiency and particularly suitable for flight under strong wind, strong breeze andother environments.

The invention relates to the field of laser cutting motion control of metal tubes, in particular to a method for determining the position of a mechanical center of a rotating shaft of a metal tube cutting system. In the method for determining the position of the mechanical center of the rotating shaft of the metal tube cutting system, a capacitive height adjustment device is used. The method is characterized by comprising the following specific steps: measuring the width W and the height H of a metal tube by using a caliper; then observing whether a sensing head of the capacitive height adjustment device is above the metal tube or not; if the sensing head of the capacitive height adjustment device is not above the metal tube, adjusting the position of a cutting nozzle; carrying out rough flattening operation; carrying out rough centering operation; carrying out accurate flattening operation; and carrying out accurate centering operation. By the rough flattening operation, the circumstance that the height adjustment device collides with the tube accidently due to excessive inclination of the tube is avoided; by the rough centering operation, the approximate position of the center of the tube is calculated, and the height adjustment device is prevented from pricking the outside of the square tube; after rough flattening and rough centering are carried out, flattening precision is improved by the accurate flattening operation, and flattening is finished; and finally, by the accurate centering operation, high-precision measurement on the mechanical center is finished.

The invention discloses a low-temperature ball valve, which comprises a valve body, a valve cap, valve seat assemblies, a ball body, a valve rod and a stationary shaft, wherein the valve body and the valve cap are respectively provided with a runner; the valve body and the valve cap are connected by a gasket, a stud and a nut; the ball body is arranged in the valve body; and two sides of the ball body are respectively provided with one valve seat assembly respectively connected with the insides of the valve body and the valve cap. The low-temperature ball valve is further provided with a driving device, wherein the driving device is connected with the upper part of the valve rod by a key, and the lower end of the valve rod is connected with the ball body. According to the low-temperature ball valve disclosed by the invention, a welding line for connecting the valve body and the valve seat adopts a full-automatic welding technology, and the valve body and the valve seat adopt the U-shaped welding line so as to eliminate a leaking point in the welding line for the valve body and the valve seat. The valve sealing surface adopts Stellite hard alloy, the surface is formed by rolling, and the service life of the valve is prolonged. The sealing surface adopts automatic grinding, and the goodness fit of the sealing surface is improved.

The invention discloses a ball valve. The ball valve comprises a valve body, a valve cover, valve seat assemblies, a ball, a valve rod, a spring, a fixed shaft, a long-neck support and a top support and further provided with a driving device. The valve body and the valve cover are respectively provided with a flow channel and connected through a gasket, a stud and a nut; the ball is arranged in the valve body, and the two sides of the ball are respectively provided with one valve seat assembly and connected with the inside of the valve body and the inside of the valve cover respectively; the driving device is connected with the upper portion of the valve rod through a key, the lower end of the valve rod is connected with the ball, and the driving device rotates to make the valve rod and the ball to rotate around the axis so that the valve can be opened or closed by 90 degrees. Corners of an upper seal support, a packing gasket and a packing pressing sleeve are designed into rounded corners, the gap is appropriately increased for inner holes, and the gap is appropriately reduced for outer circles. Roller forming and surface nitriding treatment are adopted for the surface of the valve rod to improve the surface hardness of the valve rod and prevent the surface of the valve rod from straining and galling, mechanical abrasion is reduced, and operation torque of the valve is reduced.

The invention provides a paper separation mechanism. The subject is to solve the problem that when papers of different sizes are put in and two pieces of paper connected with a picking roll are send out at the same time, the papers are stuck or separated badly. As a solution, the paper separation mechanism of the invention consists of a picking roll (1), a output roll (2) and a separate roll (3), rows of paper detect device arranged at the transmit direction (A). The paper detect device is arranged at the transmit direction (A) vertical to the papers (10) in a row and provided with a right, a central and a left sensor. The difference of shading sequence between the sensor (7) of the first paper detect device row and the sensor (8) of the second paper detect device row is regarded as paper abnormality, and the papers (10) are send back to a paper input opening.

The invention discloses a novel device for preventing an edge of a colored tape from silk running and fuzzing. The novel device comprises a fuzzing-prevention colored tape box, wherein the tops of twosides of the fuzzing-prevention colored tape box are connected with colored tape conveying connectors; the tops of the colored tape conveying connectors are connected with the colored tape; the bottom end of the outer part of the fuzzing-prevention colored tape box is fixedly connected with a dust-removing control box; a ventilation opening is formed in the bottom end of the dust-removing controlbox; one end, which is far away from the fuzzing-prevention colored tape box, of the ventilation opening is communicated with a small-size dust collector; left and right sides of a dust collection opening of the small-size dust collector are communicated with fuzz removing and dust collection devices through a first dust collection pipe and a second dust collection pipe respectively. The novel device belongs to the technical field of printing equipment. By adopting the novel device for preventing the edge of the colored tape from silk running and fuzzing, the problems that the edge of an existing colored tape easily has the silk running and easily winds a colored tape wheel after being fuzzed, so that the colored tape wheel is clamped and the colored tape cannot be normally retracted backto the colored tape box are solved, the service life of the colored tape is prolonged to a certain extent and the printing efficiency of the colored tape is improved to a certain extent.

The invention discloses a rail transit shielding door. The rail transit shielding door structurally comprises a box body, wherein the box body is of a frame type structure, symmetrical sliding inner cavities are formed in the two sides of the box body in a penetrating mode, sliding plates are arranged in the sliding inner cavities in a sliding mode, rotating plates located in the box body are arranged on one sides of the sliding plates, the rotating plates are connected with the box body in a rotating fit mode, a linkage opening device capable of enabling the sliding plates and the rotating plates to be opened in a linkage mode is arranged on the upper side of the box body, and a gap closing device which is located in the box body and can close a gap between a carriage and a platform according to the change of the distance between the carriage and the platform is arranged on the lower side of the box body. According to the rail transit shielding door, a mode that sliding and overturning are conducted at the same time is adopted, on the premise that the space of the door frame is enough, people can be guided to get on and off a train, meanwhile, the function of filling the gap between the shielding door and the train can be achieved, and people are prevented from being stuck or objects are prevented from falling into a rail.

The invention discloses a novel tool apron for preventing eccentric wear of a hobbing cutter. The novel tool apron comprises bases symmetrically arranged onthe two sides of the hobbing cutter, U-shaped mounting grooves opened upwards are formed in the bases, sliding guide slots are formed in the bottoms of the mounting grooves in the direction vertical to the axis direction of the hobbing cutter,fixed blocks sliding along with the sliding guide slots are mounted on the sliding guide slots, joint bearings connected witha cutter shaft of the hobbing cutter are mounted on the fixed blocks, and elastic elements are separately arranged between the mounting grooves and the fixed blocks. By adjusting the hobbing cutter and the axis angle of the hobbing cutter, eccentric wear and abrasion of thehobbing cutter are avoided, the problem that the conventional hobbing cutter is easy to wear, wear eccentrically and flake is solved, the service life of the hobbing cutter is prolonged, the replacingand maintenance numbers of times of the hobbing cutter are reduced, and the cost is saved.

The invention relates to the technical field of the planting industry and discloses a pitaya picking device for the planting industry. The pitaya picking device comprises a base, wherein the two sidesof the bottom part of the base are respectively and fixedly connected with a supporting column; supporting rods are fixedly connected at the bottom parts of the supporting columns; rollers are arranged on the supporting rods; a collecting basket is arranged at the top part of the base; blocking rods are fixedly connected at the two sides of the top part of the base. The pitaya planting device disclosed by the invention has the beneficial effects that by arrangement of the base, the collecting basket, a receiving groove, an elastic net bag, a spring, shears, cutting edges, handles, a supporting frame, the blocking rods, a first through hole, a positioning rod and second through holes, the problems that the traditional pitaya-picking method for using hand or picking shears to pick off the pitaya from paper strips is easy to cause puncture due to thorns on the branch surfaces of the pitaya so as to cause inconvenient picking and low efficiency are changed, and the picking can be achievedonly by taking up the shears to open the upper opening of the elastic net bag, buckling the pitaya into the elastic net bag, aligning the cutting edges to the root of the pitaya and shearing off.

The invention discloses a wedged hard sealing wear resistant gate valve. The gate valve comprises a valve body, a valve base, a gate plate, a valve rod, a valve cover and a driving device. The valve body and the valve cover are made of WCB; the sealing surface of the valve adopts is made of hard alloys; and the surface is formed through rolling. A welding lineconnecting the valve body and the valve base is realized by a full-automatic welding method; and the welding line of the valve body and the valve base is U-shaped. The sealing surface of the valve is made of Stellite hard alloys; the surface is formed through rolling; and the hardness can reach HRC 45; and the sealing surface is automatically grinded. The gate valve is an elastic gate plate; a tie piece is added at one side of a T-shaped groove of the gate plate; the edge part of a guide groove of the gate plate takes the shape of a round corner; the corners of an upper sealing base, a filler pad and a filler pressure sleeve of the gate valve all take the shape of round corners; and the surface of the valve rod is formed through rolling, and is subjected to nitriding treatment. The service life of the valve is prolonged; and the tightness of the valve is improved.

The invention discloses an automatic blowback emptying device applied to blockage of a filter tip rod conveying pipeline. The automatic blowback emptying device comprises a transmitting end, a conveying pipeline, a pulling mechanism and a rotating mechanism, the pulling mechanism and the rotating mechanism are arranged between the transmitting end and the conveying pipeline, and the conveying pipeline is connected with a receiving end; and dislocation and reset butt joint between the transmitting end and the conveying pipeline are achieved through the pulling mechanism and the rotating mechanism, and a connector is arranged at the butt joint position of the pulling mechanism and the rotating mechanism. By means of the device, when the filter tip rod conveying pipeline is blocked, the pipeline can be automatically disconnected, blowback emptying is conducted, the work intensity and the response speed of on-site operators are greatly reduced, meanwhile, the possibility that the equipmentis shut down due to misoperation of the on-site operators is eliminated, and the production efficiency of the equipment can be effectively improved.

The invention discloses a special internal medicine protective garment with antibacterial and radiation-proof functions. The protective garment mainly comprises a head hood, an upper coat body and a lower coat body, the bottom portion of the upper coat body and the upper portion of the lower coat body are sewn together, strainers are sewn in the sewn positions, strainers are sewn on two shouldersand two cuffs of the upper coat body and knees and ankles of the lower coat body, and multiple ventilation openings are symmetrically formed in the surface of the upper coat body and the two trouser legs of the lower coat body. The head hood comprises an eyeshade and a mask, magnetic attraction buckles are arranged at the neckline of the back face of the upper coat body and comprise a concave buckle and a convex buckle, the concave buckle and the convex buckle are each connected with a magnetic attraction strip, the other ends of the two magnetic attraction strips are connected to a fixing block of a crotch of the lower coat body, and the special internal medicine protective garment is easy to wear, breathable and comfortable.

The invention discloses a hydraulic engineering pipeline supporting system which comprises a base, supporting plates are symmetrically installed at the top of the base, a supporting disc is slidably connected to the tops of the supporting plates, a clamping device is arranged outside the base and the supporting disc, the clamping device is provided with a supporting arc plate, and a clamping plate is rotatably connected to the top of the supporting arc plate; the adjusting device is provided with a threaded column, and the threaded column penetrates through the base and extends to the outside of the base; and the cleaning device is provided with sewage discharge grooves, and the sewage discharge grooves are evenly formed in the top of the semicircular disc. According to the hydraulic engineering pipeline supporting system, the purpose of improving the buffering capacity is achieved, damage caused by collision between the pipeline and the supporting device is reduced, the height of the pipeline at the fixed position can be adjusted according to needs, impurities deposited in the pipeline are discharged in time, the water conveying efficiency of the pipeline is guaranteed, and the adaptive capacity to the environment is improved.

The invention relates to the field of deep sea sampling, in particular to a fidelity sampler containing overlying water and sediments based on an underwater mobile platform. The sampler comprises a sampling outer cylinder, two ends of the sampling outer cylinder are opened, the top end is connected with an end sealing cover, and the bottom end is connected with a ball valve; a pressure sensor is arranged on the end sealing cover; a hydraulic device is arranged on the end sealing cover, a through hole is formed in the end sealing cover, an upper piston and a lower piston are arranged in the sampling outer cylinder and are flexibly connected through a steel wire rope, and the upper piston is connected with the hydraulic device; a through hole is formed in the lower piston, and a one-way valve is arranged in the through hole; the bottom of the lower piston is connected with a sampling inner cylinder; the bottom end of the sampling inner cylinder is connected with sampling petals; through holes are formed in the side walls of the upper part and the middle part of the sampling outer cylinder, and pressure retaining valves are mounted in the through holes; an energy accumulator is connected with the sampling cylinders through hydraulic pipes and pressure retaining valves in the through holes in the upper part of the sampling outer cylinder. The sediments and overlying water can be taken at the same time, the sampling efficiency is improved, and meanwhile the workload of a matched moving platform is reduced.

The invention discloses a pepper stalk removing device which comprises a frame body; the bottom of the right side of the frame body is fixedly connected with a first motor through a support plate; anoutput shaft of the first motor is fixedly connected with a driving wheel; the surface of the driving wheel is connected with a driven wheel through a belt in a transmission manner; a rotating rod iswelded on the axial center of the left side of the driven wheel; and the left side of the rotating rod penetrates the frame body and extends to an inner cavity of the frame body to be welded with a stirring cage. By cooperation of the first motor, the driving wheel, the belt, the driven wheel, the rotating rod, the stirring cage, a movable rod, ring knives, a discharge tube, an electromagnetic valve, springs and a transverse scraper, the effect of stalk removal for peppers are achieved; and by cooperation of a second motor, a screw rod, a pushing plate and a material feeding tube, the effect of collecting and pushing the peppers after the stalk removal is achieved, thereby achieving the effect of saving time and saving effort on the pepper stalk removal, improving the work efficiency of personnel to remove stalks, and ensuring the subsequent processing of the peppers.

The invention discloses a piston of a circular slider-crank mechanism, comprising a piston seat and a crown arranged at one end of the piston seat, wherein, a circular slider containing hole and a lateral guide plate are arranged on the piston seat; the crown comprises an annular zone; the lateral guide plate is arranged along the profile of the piston seat; thermal resistance gap is arranged between the lateral guide plate and the annular zone. The piston can prevent the heat of the crown from being transferred to the lateral guide plate of the piston seat or decrease the heat when an internal combustion engine works, thus decreasing expansion and deformation of the lateral guide plate of the piston seat due to heat. The invention also provides the internal combustion engine comprising the piston of the circular slider-crank mechanism.

The invention discloses a seedling culture device for jujube tree planting, and relates to the technical field of jujube tree planting. The seedling culture device for jujube tree planting comprises a device main body, a placing mechanism is arranged in the device main body, and the placing mechanism comprises a plurality of placing trays arranged in the device main body and side surrounding plates arranged on the two sides of the placing trays and fixedly connected with the placing trays; the placing trays are horizontally arranged in the device main body and is formed by splicing and combining a plurality of horizontally-placed placing boxes with trapezoidal cross sections, bottom plates are further arranged below the placing trays, the bottom plates are fixedly connected with the side surrounding plates located on the two sides of the placing trays, and the bottom plates are further in sliding connection with the inner wall of the device main body. Compared with a traditional device, the seedling culture device for jujube tree planting can automatically replenish water for jujube tree seedlings, so that complicated manual operation is avoided, and labor force is liberated.

The invention provides a cutter cylinder blocking resistance device which comprises a cutter cylinder. A washing ring groove located in the side part of the cutter cylinder is formed in the front endof the cutter cylinder, the part, located at the front end of the washing ring groove, of the cutter cylinder is lower than the part, located at the rear end of the washing ring groove, of the cuttercylinder, and a new washing channel extends to the position of the washing ring groove. The cutter cylinder blocking resistance device has the advantages that (1) targeted washing to the cutter cylinder can be achieved, and blocking and scratching of the cutter cylinder are effectively prevented; and (2) abnormal damage of the cutter cylinder can be reduced, and the cutter changing efficiency andcutter changing safety are improved.

The invention relates to a fluffy soil compacting device which comprises a compacting wheel and also comprises a leveling plate, two mounting and fixing side plates and a plurality of blades. Guide bars are separately arranged on two sides of the bottom of each blade. A plurality of blade slots are uniformly formed in the compacting wheel. The compacting wheel is mounted between the two mounting and fixing side plates through a rotary shaft. Guide slots, through which the blades stretch out of and retract to the compacting wheel, are symmetrically formed in the inner wall of each mounting andfixing side plate. The blades are inserted into the blade slots. The guide bars of the blades are located in the guide slots. One ends of the two mounting and fixing side plates are connected to the leveling plate through extension plates while the other ends of the mounting and fixing side plates are connected to a power machine. The fluffy soil compacting device is provided with the front leveling plate, so that the fluffy soil compacting device can preliminarily settle and level concave-convex and slack soil. The blade structures can follow the compacting wheel to move to stretch out of andretract to the compacting wheel. In the walking process, slack soil can be protected, and the slack soil is prevented from being extruded by the compacting wheel to move forward. The compacting wheelcan be prevented from being sunken into the soil under the action of the front leveling plate and the blades.

The invention relates to the technical field of a device used for removing sulfur impurities from a well testing steel wire and discloses a sulfur scraping device applied to operation of a well testing steel wire for an ultradeep high-sulfur gas well. The sulfur scraping device comprises a housing, a sulfur scraping part, sulfur scraping grooves, a discharging tray and a positioning part; the sulfur scraping part is arranged inside the housing; the surface of the housing is provided with mutually-symmetric sulfur scraping grooves; the discharging tray is in threaded connection with one end ofthe housing and pushes against the sulfur scraping part which is arranged inside the housing so that the sulfur scraping part is fixedly arranged inside the housing; the discharging tray is further provided with discharging grooves which correspond to the sulfur scraping grooves one by one; the discharging grooves are used for discharging the impurities scraped by the sulfur scraping part; the housing, the sulfur scraping part and the discharging tray are each provided with a through hole which is convenient for the well testing steel wire to pass through and is used for scraping the impurities on the well testing steel wire; and the positioning part is used for circumferentially fixing the discharging tray so that the discharging tray cannot rotate relative to the housing. The sulfur scraping device disclosed by the invention is simple in structure and convenient to operate, can be used for removing the impurities on the well testing steel wire under a severe operation environment condition and prevents the well testing steel wire from being stuck.

The invention discloses a rapid squid cleaning device, and belongs to the field of fish cleaning. The rapid squid cleaning device comprises a cleaning tank, one side of the upper end of the cleaning tank is connected with a conveyor belt, an air blower is arranged below the conveyor belt and is arranged on the outer side wall of the cleaning tank, the air blower is connected with a blowpipe on theinner side of the cleaning tank, the blowpipe inclines downwards, a motor is arranged at the upper end of the cleaning tank, an output end of the motor is connected with a stirring shaft, the stirring shaft is located in the cleaning tank, a sliding plate is arranged at the right upper part of the inner side of the cleaning tank, an outlet is arranged below the sliding plate, a filter screen boxis arranged at the lower end of the air blower and connected with one end of an inclined plate in the cleaning tank, the other end of the inclined plate is located between the stirring shaft and a rotating frame, the inclined plate is hollow, a filter screen in the filter screen box penetrates through the inclined plate, the air is blown to the inclined plate through the blowpipe due to the arrangement of the air blower, the falling speed of the squid is accelerated, and the squid is prevented from blocking the inclined plate, the device is simple to operate, is high in cleaning efficiency, cleans the squid clean, and is suitable for large-scale promotion.

The invention discloses a quartz stone grinding device for quartz product production and processing. The quartz stone grinding device comprises a grinding box, wherein a first circular clamping blockis fixedly arranged at the top end of the grinding box and is connected with a first circular clamping groove formed in the side edge of the bottom end of a top cover in a clamped mode; a feeding portis formed in the middle of the top end of the top cover; and a second circular clamping block is fixedly arranged at the bottom end of the grinding box. According to the quartz stone grinding devicefor quartz product production and processing, the grinding box is connected with the top cover and a base in a clamped mode, a first connecting block and a second connecting block are connected through a connecting plate, a connecting shaft is connected with a rotating shaft in a clamped mode, so that the quartz stone grinding device is more convenient to disassemble, and when the device breaks down, maintenance is more convenient; and a round lapping block is lapped on a round lapping plate and is connected with a filter screen, and a connecting rod is connected with a hanging rod, so that the quartz stone grinding device is provided with a filter structure, quartz stone can be filtered, and personnel and property are protected.