43results about How to "Adjust height difference" patented technology

The invention provides a self-elevating platform pile leg mounting method which includes the steps: positioning and floating a main hull with built base pile leg sections in a dry dock; keeping the base pile leg sections vertically static relative to the main hull, gradually lifting the pile leg sections to be mounted to a folding port by a sea crane, and positioning and welding the pile leg sections until the pile leg sections on the main hull reach a preset height. The sea crane is positioned at a designated position in an open sea area of the dry dock. Lifting of the pile leg and standing are omitted, and construction period is shortened. As both the main hull and the sea crane float, relative positions of the main hull and the sea crane float can be adjusted, and the pile leg is conveniently folded.

The invention discloses a back rest structure with adjustable height difference. The structure comprises a regularly hexagonal center shaft, a plurality of metal insertion rods and warp platforms correspondingly arranged at the two ends of each metal insertion rod one to one. The regularly hexagonal center shaft comprises two center shaft panels A, two center shaft panels B and two center shaft panels C. The two center shaft panels A, the two center shaft panels B and the two center shaft panels C are spliced in pairs oppositely to form the regularly hexagonal center shaft. Rectangular insertion rod holes identical in shape and size are formed in the two center shaft panels A, the two center shaft panels B and the two center shaft panels C in the length direction. Every two metal insertion rods are correspondingly inserted into the two corresponding symmetric rectangular insertion rod holes one to one; a plurality of round positioning holes identical in shape and size are formed in the metal insertion rods in the length direction; the metal insertion rods are fixed into the rectangular insertion rod holes through positioning lead wires. The back rest structure has the advantage that yarns on adjacent sections have tightness difference by fixing, interchanging and changing the height difference of the adjacent insertion rods.

A traffic mechanical traction device in accordance with the present invention, The first slider comprises a first casing, an upper surface and a lower surface of the inner wall of the first casing areprovided with a first sliding groove, two first sliding grooves are slidably connected with a first sliding block, and the opposite surfaces of the two first sliding blocks are fixedly connected witheach other through a first connecting plate, and two first sliding sleeves are clamped on the side surfaces of the first connecting plate. The utility model relates to a traffic mechanical traction device with an automatic adjustment function, through the first rotational shaft, First spring, steering mechanism, third axis of rotation, a fit between the second spring and the second rotational shaft, The traffic mechanical traction device not only prevents the rear-end collision between the faulty vehicle and the consignment vehicle due to inertia and other reasons, but also makes the consignment vehicle and the faulty vehicle have a certain buffer force, thereby reducing the impact force of the faulty vehicle on the consignment vehicle due to inertia or failure to brake in time, so that the faulty vehicle and the consignment vehicle can be well protected.

The invention discloses a buoyancy-adjustable artificial floating island which comprises a floating island body. The floating island is provided with retractable buoyancy tanks, and an adjusting device is arranged between the floating island body and each retractable buoyancy tank. By means of the buoyancy-adjustable artificial floating island, the overwater exposed size of the artificial floating island can be changed through operation of the retractable buoyancy tanks, the height difference between the artificial floating island and a freighter moored in a deep water area outside the island reef is adjusted, and material transfer work efficiency and safety are improved. The buoyancy-adjustable artificial floating island can be adapted to freighters of different tonnages, construction units can have much room for freighter arrangement in the construction material conveying process, limitation on selection of sizes of the freighters due to consideration of the size difference between the freighters and small boats is not needed, the parking time of the freighters can be reduced when materials are transferred, and economy of island reef construction is improved.

The invention discloses a self-propulsion type artificial floating island. The self-propulsion type artificial floating island comprises a floating island body, a telescopic floating box is arranged on the floating island body, an adjustment device is arranged between the floating island body and the telescopic floating box, a center cylinder is fixedly arranged at the center of the telescopic floating box in the axial direction, the inner wall of the center cylinder is provided with a spiral groove channel, the adjustment device comprises a driving motor and a lifting driving rod, the driving motor is fixedly arranged on the floating island body, the lifting driving rod is in transmission connection with the output end of the driving motor, the top end of the lifting driving rod is rotationally connected to the floating island body, a lower section of the lifting driving rod is provided with a spiral convex curve which is matched with the spiral groove channel, and the lifting driving rod and the center cylinder are in transmission connection through the matching between the spiral convex curve and the spiral groove channel. According to the self-propulsion type artificial floating island, efficiency and safety of transferring of externally input materials in a construction progress of the island are improved, and economical efficiency of island construction is also improved.

The invention discloses a rapid automatic truck loading system. The rapid automatic truck loading system comprises a truck loading device and a material fetching component located at one end of the truck loading device, wherein the truck loading device comprises a stretching and contracting component, a supporting component and a material feeding forklift, the stretching and contracting componentcomprises a plurality of sliding rails performing stretching-contracting moving among the sliding rails, the adjacent sliding rails are stacked inside and outside and are driven by a first stretchingand contracting rod, the sliding rail on the outermost side is installed on supporting racks, and the lower portions of the sides, close to a truck-loading vehicle, of the other inner-side sliding rails are all provided with a plurality of different supporting idler wheels, the different supporting idler wheels can be in supporting contact with a carriage, the stretching and contracting componentcan perform stretching and contracting into the carriage in the length direction of the carriage, the material feeding forklift performs linear movement through one sliding rail with a guiding position-limiting strip and performs truck loading on cargoes, and the material fetching component is located at the tail portion of the truck-loading vehicle and can perform material fetching on the conveyed cargoes. By means of the rapid automatic loading system, the cargoes is fed into the carriage, manual carrying is saved, furthermore, rapid truck loading is realized through the linear movement of the material feeding forklift, the rapid automatic loading system is more efficient and rapid, and the truck loading is conveniently performed.

The invention discloses efficient spring height arc surface detection equipment. The equipment comprises a base and a detection groove arranged at the top of the base; a stand column is fixedly connected to the bottom of the base; a supporting seat is welded to the bottom end of the stand column; grooves are formed in the two sides of the bottom of the supporting seat; a rotating hole is formed inthe inner wall of the top of each groove; a screw rod is rotationally mounted in each rotating hole; the bottom end of each screw rod extends into the corresponding groove; the outer side of each screw rod is sleeved with a supporting rod in a threaded manner; each supporting rod is mounted in the corresponding groove in a sliding mode; balance rods are rotationally mounted on one sides, close toeach other, of the two supporting rods; balls are in contact with the two sides of the bottom of each balance rod; and supporting legs are welded to the bottom sides of the balls. The equipment is reasonable in design, simple and practical; and a height difference between the two balance rods can be adjusted, and the lengths of the four supporting legs extending to the lower part of the supporting seat can be adjusted, so that the levelness of the base and the detection groove can be adjusted conveniently, and the accuracy of spring radian detection can be improved.

The invention provides a structure and construction method of T-beam prefabricated field pedestals. A leak-proof slurry device is arranged at the upper ends of the pedestals; a T-beam side formwork split bolt reserving pipe is pre-buried in the upper parts of the pedestals; a bottom mould support device is arranged on a hanging beam between the pedestals; drain grooves are formed in the bases of the pedestals. The structure and construction method of the T-beam prefabricated field pedestals have the advantages that the close fit between a T-beam bottom mould and a side mould is achieved through a sealing rubber pipe in the leak-proof slurry device, the phenomena of leakage, honeycomb and pitted surface occurred in the T-beam pouring process are avoided, the robustness and adherence of theT-beam template are strengthened through the arrangement of the T-beam side formwork split bolt reserving pipe, and a strong fixing effect is achieved for preventing the offset and leakage of the formwork. The bottom mould support device at the position of the hanging beam is convenient to move and can be reused. The height difference can be conveniently adjusted through a screw adjusting rod, andthe placement position is accurate. Drainage can be quickly achieved through the design of a drainage system, the phenomenon of water ponding does not exist, and the construction is not affected.

The invention discloses a mold frame mechanism for a high-precision powder mold forming servo press. The mechanism comprises a master pattern, an upper sliding assembly, a lower sliding assembly, a fixed mold mounting plate, a mold mounting plate, a middle bar base and core bars. A lower mold base is arranged above the fixed mold mounting plate, a gap is reserved between the lower mold base and the fixed mold mounting plate, a lower mold is arranged on the lower mold base, the middle bar base is arranged in the gap between the lower mold base and the fixed mold mounting plate, a mold mountingplate is arranged above the lower mold base, the master pattern is arranged on the mold mounting plate, the middle bar base and the master pattern are fixedly connected, multiple mold cavities in clearance fit with the lower mold are machined in the master pattern, multiple core bars penetrating through the lower mold are arranged on the middle bar base, and the tops of the core bars are arrangedin the mold cavities. The master pattern, the upper mold, the lower mold and the core bars are arranged on the mold mounting plate, the upper mold, the lower mold and the core bars are matched with the master pattern, the filling powder can be conveniently pressed into a cylindrical product with the inner ring and the outer ring concentric, and meanwhile, the equipment pressing precision is ensured.

The invention provides a drug storage device and an automatic dispenser and relates to the technical field of drug dispensers. The drug storage device comprises a frame and storage plates in multipletiers, mounted obliquely on the frame along a conveying direction; all the storage plates are mounted movably mounted on the frame in order to adjust a height difference of the adjacent storage plates; a plurality of slideway partitions are movably mounted on each storage plate and divide the storage plate into a plurality of storage slideways in order to adjust the width of the storage slideways;a dispensing component for blocking drugs is mounted at the bottom of the corresponding storage slideways. The technical problem is solved that slideway width and shelf height cannot be adjusted.

The invention discloses field rock determination equipment and a using method thereof. The field rock determination equipment comprises a top plate, wherein stand columns are fixedly connected to thefour corners of the bottom part of the top plate correspondingly, a groove is formed in the bottom part of the top plate, rotating holes are formed in the inner walls of the two sides of the groove correspondingly, a horizontally-arranged worm is rotatably connected into the rotating holes, two symmetrically-arranged worm wheels are rotationally connected into the groove, two spiral teeth oppositein rotating direction are arranged on the outer side of the worm, the two sets of spiral teeth are engaged with the two worm wheels correspondingly, gears are fixedly connected to the front sides ofthe worm wheels, a vertically-arranged toothed rod is slidably connected into the groove, racks engaged with the gears are arranged on the two sides of the toothed rod correspondingly, and a sliding groove is formed in the bottom part of the toothed rod. According to the design of the field rock determination equipment, the height difference of rock supporting points can be adjusted, then uneven rock can be stably supported, the upper pressing head can be controlled to apply loads to the surface of the rock by rotating the hand wheel, the weight and load data of the rock can be accurately measured, and the load intensity of the rock can be conveniently calculated.

The invention provides a box spacing adjusting mechanism and an LED box assembly. The box spacing adjusting mechanism comprises a first spacing adjusting structure, wherein a driving piece is eccentrically arranged relative to the rotating axis of a rotating piece, one part of the driving piece is arranged in a spacing adjusting lock hook in a penetrating mode and drives the spacing adjusting lock hook to move in a first spacing adjusting direction or a second spacing adjusting direction, the first spacing adjusting direction is perpendicular to the rotating axis of the rotating piece and is opposite to the second spacing adjusting direction, and when the rotating piece rotates, the spacing adjusting lock hook can be driven to rotate, so that the spacing adjusting lock hook can have a locking position and an unlocking position; and a second spacing adjusting structure, wherein the spacing adjusting lock hook can be matched with or separated from a spacing adjusting rod, the spacing adjusting lock hook is located at the locking position under the condition that the spacing adjusting lock hook is matched with the spacing adjusting rod, and the spacing adjusting lock hook is located at the unlocking position under the condition that the spacing adjusting lock hook is separated from the spacing adjusting rod. According to the technical scheme, the problem that the function is single due to the fact that only gaps between the adjacent box bodies are adjusted in the prior art is effectively solved.

The invention disclose a stabilize panel base comprising a base body used for installing the stabilizing surface seam plate module; the device comprises a stabilizing surface base plate connected andfixed with the side surface of the rail beam, and an end seal plate connected and fixed with the end surface of the rail beam, wherein the stabilizing surface base plate and the end seal plate are vertically and integrally connected and fixed with each other, and a concave notch is arranged on the edges of the stabilizing surface base plate and the end seal plate connected with each other. Comprises an end seal plate and a stabilizing surface base plate which are respectively embedded and connected with two surfaces perpendicular to each other of the rail beam body, and a concave notch is arranged on the edge of the joint of the end seal plate and the stabilizing surface base plate to accommodate the free expansion and contraction of the rail beam, thereby avoiding the collision between the toothed cantilever end of the guide surface seam plate and the supporting plate and the base plate, and causing the structural function failure. The phenomenon that the finger-shaped slab base of the existing monorail track beam is not firmly connected and easy to fall off or the concrete under the slab base is out of place is effectively solved. The invention also discloses a rail beam stabilizing surface joint module and a rail beam joint device.

The invention discloses a traffic mechanical traction device with a regulating function, in accordance with that present invention, The first slider comprises a first casing, an upper surface and a lower surface of the inner wall of the first casing are provided with a first sliding groove, two first sliding grooves are slidably connected with a first sliding block, and the opposite surfaces of the two first sliding blocks are fixedly connected with each other through a first connecting plate, and two first sliding sleeves are clamped on the side surfaces of the first connecting plate. The utility model relates to a traffic mechanical traction device with an automatic adjustment function, through the first rotational shaft, First spring, steering mechanism, third axis of rotation, a fit between the second spring and the second rotational shaft, The traffic mechanical traction device with the regulating function not only prevents the rear-end collision between the faulty vehicle and theconsignment vehicle due to inertia and other reasons, but also makes the consignment vehicle and the faulty vehicle have a certain buffer force, thereby reducing the impact force of the faulty vehicle on the consignment vehicle due to inertia or failure to brake in time, so that the faulty vehicle and the consignment vehicle can be well protected.

The invention discloses assembly line type material turnover equipment. A material is conveyed to machining equipment through a transmission belt, the material is a tubular piece, the transmission belt comprises a first transmission belt body and a second transmission belt body, the turnover equipment is arranged between the first transmission belt body and the second transmission belt body, and the turnover equipment comprises a turnover mechanism. The turnover mechanism comprises a rotary table, a penetrating hole for the material to penetrate through is formed in the rotary table, and the penetrating hole is in clearance fit with the material. The turnover equipment further comprises a first correcting mechanism, the material is corrected by the first correcting mechanism before entering the penetrating hole, the material enters the penetrating hole after being corrected, the rotary table rotates in the circumferential direction to overturn the material in the penetrating hole, andthe material always fits the first transmission belt body during turnover. The invention further discloses an assembly line type material turnover method based on the assembly line type material turnover equipment. The assembly line type material turnover equipment and the assembly line type material turnover method have the advantages that the automatic degree of machining can be effectively improved, and meanwhile, the production efficiency is improved.

The invention provides an intelligent bed used for infant care. The intelligent bed comprises a base plate, an upper support wedge and a humidity sensor. The base plate is in a rectangular plate-shaped structure. The side edges of the left end and the right end of the base plate are upper convex cylindrical structures. The left end of the top plane of the base plate is fixedly connected to a rectangular energy storage power supply through a bolt. The front end and the right end of the top plane of the base plate are fixedly and upwardly connected to side guard plates. The tops of the outer endside walls of the side guard plates are vertically and outwardly provided with five groups of hooks which are fixedly connected through the bolts. In the invention, a support body and a connection plate are arranged. The bottom end plane of the support body is fixedly connected to the center of the top plane of the base plate through the bolt so that the inclination angle of a crib can be changedby adjusting the upper and lower positions of an angle adjustment block on the left side and the angle adjustment block on the right side. The height difference between the head and the body of an infant during sleep is adjusted so as to solve the problems of milk vomiting and difficult breathing caused by the sleeping posture of the infant.

The invention discloses child growth and development detection equipment, and relates to the technical field of medical detection equipment. The invention relates to an examination and measurement bed, which comprises a bearing plate, a support plate and support legs, and is characterized in that the bearing plate and the support plate are mutually connected to form a weighing scale structure; andone surface of the support plate is welded to several support legs. The detection equipment is arranged to be of a structure of the examination and measurement bed and comprises the weighing scale, and common indexes of growth and development of children can be examined and observed more visually; the bearing plate and a positioning groove can stabilize and even fix teenagers and children on theexamination and measurement bed, so that a detection result can be obtained more easily; a head top plate and a foot top plate are matched with the bearing plate to measure the length of a lying body,so that the body of a child can reach a natural state, and a measurement result is closer to a normal value; by arranging a sampling column, the sampling column is pressed down by utilizing the gravity of a human body, so that the body form of a child is naturally formed in the sampling column group, and the detection result is more intuitive.

The invention discloses a transportation machinery traction device with an adjustment function, which relates to the technical field of transportation machinery, and comprises a first casing, the upper surface and the lower surface of the inner wall of the first casing are both provided with a first chute, and The first sliding blocks are slidably connected in the two first sliding grooves, and the opposite surfaces of the two first sliding blocks are fixedly connected through the first connecting plate, and the sides of the first connecting plate are clamped with two first sliding blocks. set. The traffic machinery traction device with automatic adjustment function, through the cooperation between the first rotating shaft, the first spring, the steering mechanism, the third rotating shaft, the second spring and the second rotating shaft, can not only prevent the malfunctioning vehicle from The reason is that there is a rear-end collision with the consigned vehicle, which also makes there is a certain buffer force between the consigned vehicle and the faulty vehicle, which can reduce the impact of the faulty vehicle on the consigned vehicle due to inertia or failure to brake in time, so that the consigned vehicle and the faulty vehicle can be The faulty car plays a very good protective role.

An automobile traction device in accordance with that present invention, The first slider comprises a first casing, an upper surface and a lower surface of the inner wall of the first casing are provided with a first sliding groove, two first sliding grooves are slidably connected with a first sliding block, and the opposite surfaces of the two first sliding blocks are fixedly connected with eachother through a first connecting plate, and two first sliding sleeves are clamped on the side surfaces of the first connecting plate. The utility model relates to a traffic mechanical traction devicewith an automatic adjustment function, through the first rotational shaft, First spring, steering mechanism, third axis of rotation, a fit between the second spring and the second rotational shaft, The automobile traction device not only prevents the rear-end collision between the faulty vehicle and the consignment vehicle due to inertia and other reasons, but also makes the consignment vehicle and the faulty vehicle have a certain buffer force, thereby reducing the impact force of the faulty vehicle on the consignment vehicle due to inertia or failure to brake in time, so that the faulty vehicle and the consignment vehicle can be well protected.

The invention discloses a marine engineering auxiliary ship. The marine engineering auxiliary ship comprises a hull; the hull is provided with telescopic floating boxes; an adjusting device is arranged between the hull and each telescopic floating box; a central cylinder is arranged at the center of each telescopic floating box along an axial direction; the inner wall of each central cylinder is provided with a spiral groove; each adjusting device comprises a driving motor and a lifting driving rod; the driving motor is fixed on the hull; the lifting driving rod is in transmission connection with the output end of the driving motor; the top end of the lifting driving rod is rotatably connected with the hull; the lower section of the lifting driving rod is provided with a spiral protruding line matched with the spiral groove; the lifting driving rod is in transmission connection with the central cylinder through the matching of the spiral protruding line and the corresponding spiral groove; the stem of the hull is provided with a beaching rack; the beaching rack is connected with the stem; and the beaching rack is provided with a crawler-type retractor. According to the marine engineering auxiliary ship, the hull can berth stably. With the marine engineering auxiliary ship adopted, the efficiency and safety of external input material transfer during island reef construction can be improved, and the economical efficiency of the island reef construction can be improved.

The invention discloses a medical ear washing device which comprises a base, a support plate and a container, wherein the support plate is fixed at the top of the base; the container is used for containing normal saline; a hose communicated with the inner cavity of the container is fixed at the bottom of the container; a washing tube is fixed at an end of the hose; a control valve is mounted on the outer wall of the washing tube; a hollow tube is fixed on the outer wall of the left side of the support plate in a length direction of the support plate; a column body is moveably arranged in the inner cavity of the hollow tube; a connecting block which extends outside the hollow tube and is connected with the container is fixed at the top of the column body; a transverse plate is fixed on theouter wall of the right side of the support plate; a fixing base is fixed on the transverse plate; a rotating rod is rotationally arranged on the fixing base; a winding reel is fixed at one end of therotating rod; an L-shaped rocker rod is fixed at the other end of the rotating rod; a fixed pulley is mounted at the top of the support plate; a wire which winds cross the fixed pulley and is connected with the top of the column body is wound on the winding reel; a stripy groove in which the connecting block slides is formed in the outer wall of the hollow tube.

The invention discloses a full-automatic vegetable cutter. A rotary disc mechanism comprises a rotary disc cover plate, a rotary disc, a rotary disc bottom plate and a cam bearing; the rotary disc is installed between the rotary disc cover plate and the rotary disc bottom plate; the cam bearing is eccentrically fixed to the rotary disc; the rotary disc bottom plate is provided with outer threads. A shredding mechanism is located between the rotary disc mechanism and a slicing mechanism and comprises multiple shredding cutters arranged on a positioning shaft and a shredding cutter box; the positioning shaft is fixed to the shredding cutter box; the bottom of the shredding cutter box is open; the bottoms of all the shredding cutters are exposed. A first motor drives a feeding mechanism to linearly move in a reciprocating mode in a shell through the rotary disc and the cam bearing; a driving gear installed on an output shaft of a second motor is engaged with a lifting gear; the lifting gear is provided with inner threads matched with the outer threads of the rotary disc bottom plate; each lever makes contact with the bottom of the corresponding shredding cutter; a third motor enables part of the levers or all the levers to upwarp through a cam and pushes the corresponding shredding cutters to extend out of the shredding cutter box. Slicing, shredding and dicing can be finished easily and rapidly.

The present invention relates to a semiconductor device and a manufacturing method thereof, by forming first and second grooves in the first, second, third and fourth chips respectively , third, and fourth blind holes, and respectively form first, second, third, and fourth protrusions on the respective back surfaces of the fifth, sixth, seventh, and eighth chips, and The side surfaces of the second, third, and fourth protrusions respectively form through holes, and then in the subsequent bonding process, in the first, second, third, and fourth grooves and the first, second, and third 1. Adhesive material is set in the fourth blind hole, and the fifth, sixth, seventh, and eighth chips are correspondingly set in the first, second, third, and fourth grooves, so that the first, the first Two, third, and fourth protrusions are respectively embedded in the corresponding first, second, third, and fourth blind holes, and a part of the bonding material in each blind hole is embedded in each through hole of each protrusion .

The invention provides a method for solving hard mask layer silicon nitride residue on a dual active region graphic wafer. The method includes the step that a first hard mask layer and a second hard mask layer which are different grow in order on a wafer substrate. Patterns of the first hard mask layer and the second hard mask layer are formed through lithography and etching technologies, and a first type of groove and a second type of groove are formed in the wafer substrate. A photoresistive agent is coated to cover the first type of groove, and the second type of groove is exposed. The second type of groove exposed by the photoresistive agent is further etched, so that the depth of the second type of groove in the wafer substrate is deepened. The depth of the second type of groove in the wafer substrate is more than that of the first type of groove in the wafer substrate. The photoresistive agent is removed, and then the second hard mask layer is removed.

The invention discloses an assistant artificial floating island for a fishery industry, comprising a floating island body, wherein a telescopic floating box is arranged on the floating island body, and an adjusting device is arranged between the floating island body and a telescopic floating box; the middle of the telescopic floating box is fixedly provided with a center cylinder along the axial direction, and the inner wall of the center cylinder is provided with a rack; the adjusting device includes a driving motor, a lifting driving gear and a hanging cylinder; the driving motor is fixedly arranged on the floating island body, and the lifting driving gear is in drive connection with the output end of the drive motor, and also rotationally connected to the bottom end of the hanging cylinder; the lifting driving gear is meshed with the rack, and the top end of the hanging cylinder is fixedly connected to the floating island body. Through the operation of the telescopic floating box, the overwater exposed volume of the floating island body is changed, the height difference between a fishing boat and the assistant artificial floating island for the fishery industry is adjusted, the internal material and product transferring efficiency and safety of a fleet are improved; besides, the open sea endurance of the fleet and economic benefit of the open sea work are also improved.

The invention relates to a scanning head of a laser leveling instrument, which includes a casing, a laser emitter is arranged in the casing, a first installation frame is arranged directly above the laser emitter, and a first through hole is arranged on the bottom wall of the first installation frame. Light hole, the top wall of the first installation frame is provided with a second light hole, the first installation frame is provided with a half mirror, the top of the first installation frame is provided with a second installation frame, and the second installation frame slides with the housing Cooperate, the bottom wall of the second installation frame is provided with a third light hole, the second installation frame is also provided with a reflector, and the side walls of the housing are respectively provided with a first exit port corresponding to the semi-mirror and a reflector. The second exit port corresponding to the mirror, the scanning head of the laser leveling instrument also includes a height adjustment device for driving the second installation frame to move up and down. The scanning head of the laser leveling device of the present invention emits two laser scanning lines at the same time and it is convenient to adjust its height.

The invention discloses a new type of seeding device, which comprises a base and a support plate. A horizontal plate is fixed on the top of the support plate. A seed container is arranged above the horizontal plate. The bottom of the tapered mouth is connected with an outflow pipe, the outer walls of the left and right sides of the seed container are respectively fixed with a connecting plate, the top of the horizontal plate is fixed with an elastic support device connected with the connecting plate; the top of the base is fixed with a vertical pushing device , a fertilizer container is fixed on the top of the vertical propulsion device, and a mounting seat is fixed on the outer walls of the left and right sides of the fertilizer container, and a stirring motor is installed on the mounting seat, and the output shaft of the stirring motor is connected to the fertilizer container through the first coupling. The inner stirring rod has a stirring blade fixed on the outer wall of the stirring rod, the bottom of the fertilizer container is connected with an outlet, and the bottom end of the outlet is connected with a nozzle through a pipe body. The beneficial effect is that the functions are diverse.

The invention provides a box adjusting mechanism and an LED box body assembly. The box adjusting mechanism comprises: a horizontal adjusting structure which comprises a first connecting seat, a rotating part arranged on the first connecting seat, an adjusting lock hook movably arranged on the rotating part, and a driving part penetrating into the rotating part; and a vertical adjusting structure which comprises a second connecting seat and an adjusting rod movably arranged in the second connecting seat, the adjusting latch hook is matched with the adjusting rod when switched from the unlocking position to the locking position, and the adjusting latch hook is separated from the adjusting rod when switched from the locking position to the unlocking position. The first connecting seat is provided with a limiting hole and a first avoiding groove communicated with the limiting hole, the rotating piece is installed in the limiting hole, the rotating piece is provided with a guide hole communicated with the limiting hole, and a part of the adjusting lock hook is arranged in the guide hole and the first avoiding groove in a penetrating mode. According to the technical scheme, the problem that the function is single due to the fact that only gaps between adjacent box bodies are adjusted in the prior art is effectively solved.