61results about How to "Avoid tilting and falling" patented technology

The invention relates to the field of plantlet planting, in particular to a planting method for increasing the survival rate of greening plantlets. The method comprises the steps of selection of appropriate land and appropriate trees, preparation before transplanting, selection of the plantlets, digging of the plantlets, soaking of roots in a plantlet rooting powder solution and planting of the plantlets, wherein the root system of the plantlets is soaked in the 10-20 mg / L plantlet rooting powder solution for 0.5-2 hours, and then the root system of the plantlets is wrapped in wet mud. The method greatly increases the survival rate of the greening plantlets through enlargement of tree pits, covering with mulching film, arrangement of wind barriers, shading nets and drainage ditches or cofferdams, protection treatment for tree trunks and application of a shooting agent and other measures, and has a great popularization value.

The invention relates to a folding conveyor belt. The folding conveyor belt comprises rollers, side wheels, ejecting pillars, columns, universal wheels, folding arms, fixed shafts, telescopic rods, side shafts, bolts, cross shafts and cross shaft holes. The universal wheels are arranged at the bottoms of the columns, the telescopic rods are mounted in the middle positions of the columns, the topsof the columns are separately connected to the upper and lower cross shafts, the rollers are mounted on the cross shafts in a sleeving mode, ejecting pillars are separately mounted on two sides of therollers, the side shafts are arranged on the tops of the ejecting pillars, the side shafts and the side wheels are in interference fitting connection, the cross shaft holes are formed in the two endsand the middle positions of the folding arms, two ends of the cross shafts penetrate the cross shaft holes, separately, the folding arms are separately mounted on the outer sides of the ejecting pillars, and the folding arms are connected to the upper and lower cross shafts in a staggered mode. The folding conveyor belt designed by the invention is convenient to operate, convenient to fold and store and high in practicality.

The invention relates to a tool clamp for automobile part machining and manufacturing. The tool clamp comprises a bottom plate, a rotating shaft, tool clamp devices and adjusting devices, wherein a circular through hole is formed in the middle of the bottom plate, semicircular grooves are uniformly formed in the outer side of the bottom plate, the rotating shaft is installed in the middle of the bottom plate through a bearing, the tool clamp devices are installed on the semicircular grooves through a pin shaft, the adjusting devices are symmetrically arranged on the rotating shaft, and the adjusting devices are connected with the outer sides of the tool clamp devices through steel wire ropes. The automobile part machining and manufacturing tool clamp can solve the problem that in the machining process of an existing automobile part machining and manufacturing tool clamp, the machining position of a workpiece to be machined cannot be changed randomly according to the machining positionof the workpiece to be machined on the same tool clamp, the machining process is large, the process is tedious, and the period is long; and meanwhile, when the to-be-machined workpiece is processed, the phenomena such as inclination or falling are easily generated, and the problems that the machining is difficult or failed due to the position deviation of the to-be-machined workpiece during machining are solved.

The invention relates to a special transporter for a mine oil drum. The special transporter for the mine oil drum comprises a base. The bottom of the base is provided with wheels. The top of a chassisis provided with a curb frame. The curb frame comprises a support column. The support column comprises a corner support column and a middle support column. The left and right sides of the middle support column are provided with oil drum fixing devices. The oil drum fixing devices are between a front fixing cross rod and a back fixing cross rod. The support column is provided with a brace rod groove. The brace rod groove is provided with a brace rod. The beneficial effect of the special transporter for the mine oil drum is that the oil drum can be convenient loaded and unloaded through the special transporter. The oil drum is fixed and buffered better in a transporting process of the oil drum, the inclined falling and excessive bumping of the oil drum are avoided, and dangers in the transporting process caused by the rollover or inclination of the transporter are effectively avoided. In addition, two oil drums are installed on one transporter, so the working efficiency and the workingsafety are greatly improved, and the working strength of workers is relieved. The special transporter for the mine oil drum further has the advantages of simple structure, lower cost, and convenient maintenance.

The invention discloses a clamping and transferring device of a hydrogen fuel cell production line. The device comprises a device main body, a motor and a conveyor belt, wherein the motor is arrangedon the outer surface of the rear end of the device main body; the conveyor belt is movably connected to the middle position of the outer surface of the device main body; support legs are fixedly connected to the outer surface of the lower end of the device main body; a fixed plate is fixedly connected to the outer surface of one side of the device main body; a roller is movably connected inside the fixed plate; a plurality of grooves are formed in the outer surface of the upper end of the conveyor belt; a movable plate is movably connected inside each groove; and the distance between the roller and the conveyor belt is larger than the height of each movable plate. According to the device, more stable transferring of hydrogen fuel cells is ensured, the hydrogen fuel cells are prevented fromfalling obliquely in the moving process, the structure is simple, the cost is low, the friction between the hydrogen fuel cells and the device can be reduced, the hydrogen fuel cells are convenient to transfer, the effect is remarkable, and the device is convenient to use.

The invention belongs to the technical field of mechanical automatic machining, and discloses a portal frame device for mechanical automatic machining. The portal frame device comprises two bases, wherein supporting columns are fixedly mounted in the middles of the top surfaces of the two bases, universal wheels are fixedly mounted on the front and rear sides of the bottoms of the two bases, a topbeam is fixedly mounted at the tops of the two supporting columns, and reinforcing steel pipes are fixedly connected to the front and rear sides of the tops of the bases and fixedly connected with the supporting columns. According to the portal frame device, an output shaft of a servo motor drives a rotating shaft to rotate, free winding and unwinding of steel wire ropes are achieved through rotation of wire winding devices and a connecting shaft, and then the gravity of a movable cross beam acts on the wire winding devices and the connecting shaft; compared with the prior art, acting force acting on the middle of the top beam is dispersed, and it is avoided that the middle of the top beam of the portal frame device deforms and even breaks due to long-term stress; and meanwhile, the steelwire ropes are always in a tensioned state, so that the use safety of the portal frame device is improved.

The invention discloses a water-soluble polymer adhesive. The water-soluble polymer adhesive is prepared from the following materials in weight percent: 30-50 percent of modified starch solution, 1-5 percent of water-soluble polymer, 0.1-0.2 percent of film forming agent, 0.01-0.1 percent of crosslinking agent and the balance of water. In addition, the invention also discloses a method for preparing the water-soluble polymer adhesive. The water-soluble polymer adhesive disclosed by the invention is prepared from the water-soluble polymer and oxidized and gelatinized modified starch solution, aldehyde groups and carboxyl groups contained in the modified starch solution and the water-soluble polymer take effect with each other to mutually dehydrate to form a network structure, simultaneously the modified starch and the water-soluble polymer further cross link and produce crosslinking to form an interpenetrating network structure under the action of the crosslinking agent, and therefore, the water-soluble polymer adhesive just has high adhesion strength in the transverse direction and almost has no adhesion strength in the longitudinal direction.

The invention discloses a novel rotary moving mechanism, and relates to the technical field of transportation equipment, the novel rotary moving mechanism comprises a bottom frame, a mounting shell, a stepping motor, a conveying gear, a pulley assembly, a conveying rack, a roller assembly, a bearing plate and a tray, the bottom frame comprises a base plate and supporting legs, and the base plate is in a rectangular plate shape; supporting legs are fixedly installed at the four corners of the bottom of the base plate, two installation shells are fixedly connected to the bottoms of the supporting legs, moving mechanisms are arranged in the two installation shells, and the stepping motor is fixedly installed on the bottom frame. According to the device, the stepping motor drives the conveying gear and the conveying rack to move, the conveying gear and the conveying rack convert rotary motion into linear motion, then a heavy object is moved back and forth through the pulley assembly and the roller assembly, manpower and labor are saved, noise pollution is reduced, energy is saved, the environment is protected, and the device is low in cost, can be repeatedly used and conforms to the claim of environmental protection.

The invention discloses a carrying system for a stereo garage. The carrying system comprises a rack, a guiding rail seat arranged at the bottom of the rack, and a guiding rail strip arranged at the top of the rack. The rack comprises a portal frame body and a bracket arranged in the portal frame body. The bracket comprises a bracket body, an anti-slip pad arranged on the surface of the bracket body, and a base arranged at the bottom of the bracket body. A first hydraulic oil cylinder is arranged on one side inside the base, and a second hydraulic oil cylinder is arranged on the other side inside the base. The first hydraulic oil cylinder and the second hydraulic oil cylinder are arranged at the bottom of the bracket body, the bracket body can be clamped on the portal frame body in extending and retracting modes when stopping lifting, and thus the bracket body is further stabilized. The bracket body is further provided with the anti-slip pad, and a car is fixed by the anti-slip pad through a rectangular hole groove, thus the car can be prevented from sliding on the bracket body and consequently falling obliquely, and the car is parked more safely; and the anti-slip pad is resistantto scratching and extruding and suitable for preventing slipping during car parking.

The invention discloses an automobile part machining device. The automobile part machining device comprises a control panel, a machine body, a heat dissipation opening, an opening and closing door, a main shaft and a waste chip filtering and discharging device, wherein the control panel is fixedly connected with the right portion of the front end of the machine body in an embedded mode, the heat dissipation opening and the machine body are of an integrated structure, the opening and closing door is movably clamped with the machine body, the main shaft is installed on the left side of the inner wall of the machine body, the waste chip filtering and discharging device communicates with the machine body, the main shaft comprises a chassis, connecting blocks, fixing seats and cover plates, the fixing seats are in threaded connection with the connecting blocks through screws, and the fixing seats are in sliding connection with the chassis through the connecting blocks. The invention relates to the technical field of automobile part machining. According to the automobile part machining device, the situation that the fixing seats are difficult to replace due to the fact that scrap iron blocks fixing clamping grooves and threaded holes, and consequently, the disassembling time of workers is prolonged is avoided, a clamp better attaches to a workpiece, and then the situation that the machined part is scrapped due to the fact that a groove is formed in the surface of the workpiece by a clamping device through clamping is avoided.

The invention discloses a cylindrical workpiece length sorting device, which comprises a frame, on which a bottom plate is arranged, the top of the bottom plate is connected to a feeding plate, the bottom of the bottom plate is connected to a first discharge plate, the bottom plate is arranged obliquely, the bottom of the bottom plate One side is provided with a fixed plate, the fixed plate is triangular, the top edge of the fixed plate is horizontal, the bottom edge of the fixed plate is parallel to the bottom plate, and the other side of the bottom plate is provided with a movable plate, the movable plate and the fixed plate are parallel to each other, and the movable plate The shape and size are the same as the fixed plate, and the ends of the fixed plate and the movable plate are connected with the second discharge plate. The invention can automatically separate cylindrical workpieces with different lengths through the fixed plate and the movable plate, the distance between the fixed plate and the movable plate can be adjusted, and can adapt to the sorting of different cylindrical workpieces, which is convenient, flexible and adaptable.

The invention discloses a protective type quick loading mechanism for a vacuum oven. A feeding protective assembly is arranged on the top surface of an objective table; the middle part of one end of amovable frame is equipped with a reduction box; the middle part of the back surface of the reduction box is equipped with a lead screw; opposite side surfaces of two clamping plates are pasted with high-temperature-resistant ceramic plates; the position, which corresponds to a slide block, of the top surface of the objective table is equipped with a slide slot; a pushing assembly is mounted inside a movable frame; a pushing rod end of a second gas cylinder is connected with a pushing plate; an outer threaded tube is placed inside a smooth hole; and one end of the pushing plate is placed witha carrier plate. In a feeding process, a first motor drives the lead screw to rotate, and the lead screw rotates for pulling the two clamping plates to get close to each other for clamping raw materials at the top end of the carrier plate and clamping the raw materials or the placing frame for placing the materials, so that the raw materials are prevented from inclining and dropping; and a secondmotor drives a connecting rod to drive the outer threaded tube to rotate, and the outer threaded tube is screwed into a connecting threaded hole during rotation, so that connection is convenient, manual separation is not needed, and safety is higher.

The invention discloses a logistics unmanned aerial vehicle with an anti-collision function, and relates to the technical field of unmanned aerial vehicles. The logistics unmanned aerial vehicle with the anti-collision function comprises an unmanned aerial vehicle body, a storage rack is arranged at the bottom of the unmanned aerial vehicle body, a telescopic sleeve is fixed to the left side of the storage rack, a positioning rod is arranged in the telescopic sleeve in a sleeved mode, and a positioning buckle device is fixed to the top of the left end of the telescopic sleeve. According to the logistics unmanned aerial vehicle with the anti-collision function, goods can be stored by arranging the storage rack, when the unmanned aerial vehicle body is located on the ground, the insertion blocks are separated from the positioning grooves, and the storage rack can freely rotate, so that the gravity center position can be adjusted according to weight distribution of the goods; the gravity center of the whole unmanned aerial vehicle is located on the central axis of the unmanned aerial vehicle body, yawing of the unmanned aerial vehicle body in the flying process is avoided, and when the unmanned aerial vehicle body flies away from the ground, the storage rack is fixed through the positioning grooves by the insertion blocks and prevented from swinging.

The invention relates to the technical field of paper processing equipment, in particular to automatic unloading equipment for cut roll paper with a diameter being 23 centimeters. In order to solve the technical problem that cost is relatively high as a great deal of labor power is wasted in an unloading process of the roll paper, the invention provides the automatic unloading equipment for cut roll paper with the diameter being 23 centimeters. The automatic unloading equipment comprises a supporting base, wherein the top of the supporting base is fixedly connected with an arc-shaped supporting plate, two arc-shaped branch plates and a drive motor separately from left to right; the top of the arc-shaped supporting plate is fixedly connected with a roll paper gliding device; and the tops ofthe two arc-shaped branch plates are fixedly connected through a circular ring protective sleeve. The automatic unloading equipment for cut roll paper with the diameter being 23 centimeters reduces needs of manpower resources; and the whole equipment is formed by combining single mechanical structures, is relatively low in production cost, and is relatively low in maintenance cost, so that the roll paper production cost is reduced, and the market competitiveness is improved.

The invention relates to a desk, in particular to a desk facilitating classified placement of books. According to the desk facilitating classified placement of the books, the students can place the books in a classified mode, and other activities of the students are not hindered. The desk facilitating classified placement of books comprises a separation assembly arranged on a desk body, a lower isolation assembly arranged on the desk body, and an upper isolation assembly arranged on the desk body. The desk body is internally provided with a first partition plate and a second partition plate sothat books can be well placed in a classified mode, and a first sliding groove, a first sliding block and a sliding plate are arranged so that the space of each part can be adjusted; the desk is provided with the lower isolation assembly and the upper isolation assembly, books can be placed on the desk body in a classified mode, and the books can be prevented from falling obliquely; the deskis simple and convenient to operate, and the lower isolation assembly and the upper isolation assembly can be freely controlled to be taken up and put down, so that students are not hindered.

The invention discloses an electric pole hoisting device for electric power construction. The electric pole hoisting device comprises a supporting frame, a connecting frame and a clamping piece. The connecting frame is mounted at the top of the supporting frame. A mounting groove is formed in the middle of the supporting frame. Fixing plates are mounted on the two side walls of the mounting groove. Grooves are formed in the fixing plates. First supporting plates are mounted on the fixing plates. The two ends of each first supporting plate are mounted on the two corresponding fixing plates correspondingly. The clamping piece is mounted in the mounting groove in the middle of the supporting frame and matched with the fixing plates and the first supporting plates. A fixing frame is further mounted at one end of the supporting frame. A sliding rail is mounted in the supporting frame. According to the electric pole hoisting device, through arrangement of the connecting frame, a crane can conveniently hoist the device, an electric pole can be clamped by the clamping piece, and the safety of the electric pole during hoisting is guaranteed; and through arrangement of a clamping mechanism, the clamping and limiting effects can be achieved, the electric pole is prevented from inclining and sliding down in the hoisting process, the safety of the electric pole and the electric pole transferring efficiency are guaranteed, and the personal safety of workers is guaranteed.

The invention belongs to the field of construction of planting arbors in water, and particularly relates to a construction device and method capable of building an overwater forest in a water environment. By mainly aiming at solving problems that a waterproof layer is arranged at the bottom of a water system, root systems of the arbors planted in water are isolated from original soil, the root systems cannot be inserted to the original soil layer and are unstable and the survival rate and later growth vigor are affected, the following scheme is proposed currently: a planting circle for treating the contradiction between original soil and the waterproof layer is arranged. The invention further provides the construction method capable of building the overwater forest in the water environment. The construction method comprises the following steps: selecting the type of the planting circle; carrying out field leveling; laying the planting circle; laying the waterproof layer; carrying out plant backfilling; planting the arbors; fixing the arbors; beautifying the device; and dismounting a fixing frame. According to the invention, the root systems of plants in the planting circle can be inserted into the original soil layer, meanwhile, the planted arbors can be fixed, in addition, the device and the method can also be applied to a shallow water environment, and the influence of water logging on tree growth is avoided.

The invention discloses detection equipment with an anti-wear structure for metal product production. The detection equipment comprises a base, wherein fixed legs are fixedly connected to both sides of the top of the base; a stretching device is slidably connected to the tops of the inner sides of the fixed legs; a fixed seat is fixedly connected to the top of the base; a transverse plate is fixedly connected to the top of the fixed seat; clamping columns are slidably connected to the two sides of the top of the transverse plate; rubber pads are arranged at the inner sides of the clamping columns; and fixed blocks are fixedly connected to the tops and the bottoms of the outer sides of the rubber pads. According to the detection equipment with the anti-wear structure for metal product production, the effect of preventing wear of parts is achieved, the practicability of the detection equipment is enhanced, the quality of the parts is enhanced, and the problems that when existing detection equipment clamps the parts with too large force, the surfaces of the parts are worn to a certain extent, and the quality of the parts cannot be guaranteed are solved.

The invention discloses a safety protection type child seat comprising a backrest, a seat cushion and side baffles. The two sides of the top of the seat cushion are provided with the side baffles, oneside of the backrest is provided with a mosquito-repelling box, the mosquito-repelling box is internally provided with an accommodating chamber, the mosquito-repelling box is mounted on the backrestthrough a fixing screw, one side of the backrest is provided with a safety belt, the middle portion of the safety belt is provided with a protective sleeve, one side of the protective sleeve is provided with an accommodating bag provided with a zipper, the two sides of the side baffles are provided with a plurality of buckles, the top of each buckle is provided with a bracket, the bracket is connected to the side baffles through a rotating shaft, the two sides of the bottom of the seat cushion are provided with supporting columns, and suckers are disposed at the bottoms of the supporting columns and the bracket. Each supporting column is of a telescopic structure, the length can be adjusted according to the height of a dining table, the ground is adsorbed by the suckers, the seat stabilityis reinforced, the bracket is rotated during the dinning at the dining table, the suckers of the bracket are adsorbed to a table top, the protective effect is enhanced, and children have a safe rangebetween the table top and the seat. The safety protection type child seat is reasonable in design and suitable for popularization and use.

The invention discloses hard box packaging equipment which comprises a conveying device and an anti-deviation arrangement device, wherein a mounting groove is formed in one side of the upper end of asupporting plate, a roller is arranged in the mounting groove through a connecting rod, an overturning arm is mounted at the upper end of the supporting plate at one end of the mounting groove and used for overturning and conveying stacked paper boxes sleeved with plastic bags, transmission belts are symmetrically arranged on the edges of the supporting plates on two sides of the upper end of thetop end opening of the mounting groove correspondingly to clamp and convey stacked paper boxes, and the overturning arms deflect and convey the stacked paper boxes to the upper end of the roller and then are matched with the transmission belts to clamp and convey the stacked paper boxes to the anti-deviation arrangement device at the upper ends of the supporting plates for anti-deviation arrangement. And then the plastic bags are conveyed to a discharging door to be heated and slightly melted through an infrared heating lamp tube on the inner wall of the discharging door, the plastic bags arecondensed to wrap the stacked paper boxes to be packaged, and the stacked paper boxes are tightly sleeved by means of thermoplasticity of the plastic bags, so that the equipment is convenient and rapid to operate, and the plastic bags are good in waterproofness. The waterproof performance of the completely wrapped stacked paper boxes is greatly improved during transportation.

The invention discloses a self-balancing agricultural spraying unmanned aerial vehicle, which comprises a vehicle body. A water tank is mounted below the vehicle body; a plurality of wings are mountedon the side wall of the vehicle body; flying parts are mounted on the wings; a plurality of air cylinders are fixedly connected to the bottom in the water tank at equal intervals; a rubber partitionplate is embedded in each air cylinder, a first through hole and a second through hole are formed in the side wall of each wing, a first air guide pipe is communicated between each first through holeand the corresponding air cylinder, a second air guide pipe is communicated between each second through hole and the corresponding air cylinder, and elastic air hoods are embedded in the bottoms in the first through holes and the bottoms in the second through holes. When the unmanned aerial vehicle flies at variable speed or turns, airflow passing through the through holes in the wings provides lifting force for the wings, so that the impact force of liquid in the water tank is balanced, the unmanned aerial vehicle is prevented from falling obliquely, and the balance performance of the unmanned aerial vehicle at variable speed or turns is greatly improved.

According to the fork arm carrier provided by the invention, after the sensing device senses that goods move in the front-back direction, the corresponding sensing signal is generated. The driving transmission device drives the hydraulic device to press in or suck out hydraulic oil from the first hydraulic elastic piece and the second hydraulic elastic piece after receiving the induction signal, so that one of the first hydraulic elastic piece and the second hydraulic elastic piece extends, and the other one of the first hydraulic elastic piece and the second hydraulic elastic piece is shortened. The first hydraulic elastic piece and the second hydraulic elastic piece stretch or retract to drive the first connecting rod to move in the front-back direction, and then the upper end of the driving arm is driven to swing. The upper end of the driving arm swings to drive the pallet fork to swing, so that goods incline forwards or backwards and move, and the position of the goods in the front-back direction is adjusted. The fork arm carrier provided by the invention can automatically and quickly adjust the position of the goods and prevent the goods from inclining and falling off.

The invention discloses a showing stand for network product marketing. The showing stand comprises a base, a first machine base is fixedly connected to the middle of the lower end face of the base, a double-shaft motor is arranged in an inner cavity of the first machine base, a rotating column is fixedly connected to the output shaft end of the double-shaft motor, a first bevel gear is fixedly connected to the end, away from the double-shaft motor, of the rotating column, second bevel gears are connected to the front side and the rear side of the first bevel gear in an engaged mode, a connecting column is rotatably connected between the second bevel gears, a threaded rod is fixedly connected to the face, away from the connecting column, of each second bevel gear, the middle parts of the threaded rods are in threaded connection with threaded columns, limiting rods are connected to the upper portions of the threaded columns in a penetrating mode, the lower end faces of the threaded rods are fixedly connected with first lugs, and the inner cavities of the first lugs are rotationally connected with rotating plates. The invention relates to the technical field of showing stands. According to the showing stand for network product marketing, the problems that an existing showing stand for network product marketing is inconvenient to adjust in height, inconvenient to move and poor in showing effect are solved.

The invention discloses edge banding equipment for rice straw decoration plate production. The edge banding equipment for rice straw decoration plate production comprises an edge banding machine and asupporting device, wherein the supporting device is slidably inserted into the side face of the edge banding machine; a rotating shaft is rotatably installed at the bottom end of the interior of theedge banding machine; coil springs are evenly and fixedly connected to the outer surface of the rotating shaft; a rope belt is connected to the outer surfaces of the coil springs in a wound mode; a limiting sleeve is fixedly connected to the center of the bottom face of the edge banding machine; connecting holes are evenly formed in the center of the side face of the edge banding machine; a toothgroove is formed in the center of one end face of the limiting sleeve; a supporting frame is fixedly installed in the supporting device; a supporting top plate is fixedly connected to the top end of the supporting frame; and a baffle is welded to the side edge of the top end of the supporting frame. According to the edge banding equipment for rice straw decoration plate production provided by theinvention, by adjusting the distance between the supporting device and the side face of the edge banding machine, the supporting device can play a role in supporting straw plates with different sizes,so that the side edges of the straw plates with the large size are prevented from falling obliquely.

The invention discloses a laser spot calibration platform, relates to the technical field of machining equipment, and aims to solve the problems that the Y-direction position of laser welding spot calibration of an existing V362 vehicle type top cover is out of tolerance, and a laser welding surface of a vehicle body top cover is easy to lose efficacy. A first clamping mechanism is arranged at the upper end of the placing platform, a second clamping mechanism is arranged on one side of the first clamping mechanism, a welding seam guide groove is formed in the upper surface of the placing platform, the welding seam guide groove and the placing platform are of an integrated structure, and a supporting column is arranged below the placing platform; the rotating column is arranged at the lower end of the placing platform, the rotating column and the placing platform are of an integrated structure, a rotating shaft is arranged at one end of the rotating column, and the rotating shaft and the rotating column are of an integrated structure; the electric push rod assemblies are arranged on the two sides of the supporting column, and adjusting columns are arranged at the upper ends of the electric push rod assemblies; and the moving column is arranged above the adjusting column.

The invention provides a horizontal transport chain used for wood. The horizontal transport chain is formed by connecting chain links sequentially. Each chain link comprises two inner chain plates, two outer chain plates, two rollers, two sleeves, two pin shafts, a supporting plate, two edge anti-skid strips, one or more middle anti-skid strips, a side extension connecting mechanism and an anti-slippage mechanism. The horizontal transport chain can effectively reduce damage in the wood transport process and has high transport stability.

The invention discloses a high school biologic anti-sleepiness seat which comprises an inner supporting frame, the bottom of the inner supporting frame is fixedly connected with a fixed base, the tops of the outer walls of the two sides of the inner supporting frame are fixedly connected with vertical bearing arms, and the tops of the vertical bearing arms are slidably connected with a mounting device. Lifting handles are slidably connected to the two sides of the top of the mounting device, and a seat backrest is fixedly connected to the top of the back face of the mounting device. According to the anti-sleepiness seat for the senior high school students, the situation that a user shakes left and right when sitting down due to looseness of the inner supporting frame is effectively avoided, then the service life of the inner supporting frame is prolonged, the locking frame can abut against components in contact with the inner supporting frame, and therefore the stopping position of the lifting height of the mounting plate is fixed, and the anti-sleepiness seat for the senior high school students is convenient to use. The problem that the mounting plate descends due to the pressure of a user is effectively avoided, and the convenience of adjusting the mounting plate to a proper sitting posture by the user is improved.