62results about How to "Play a positioning function" patented technology

The invention discloses a mounting method and mounting bases for locomotive underframe parts, and belongs to the technical field of railway locomotives. In order to mount and dismount the parts on a locomotive body underframe conveniently and adjust the positions of the locomotive underframe mounting parts, sliding rails are welded to the locomotive body underframe in advance, mounting beams are welded on one part to be mounted, the mounting bases are arranged at the ends of the mounting beams, then guide rails on the mounting bases are matched with the sliding rails, and the mounting bases are fixed by limiting stopping blocks and positioning stopping blocks. The mounting method is suitable for smoothly mounting most of locomotive underframe parts, the weights of the mounted parts are borne by a locomotive body and the mounting bases, and bolts are prevented from bearing transverse shear force in the locomotive operation process. The sliding rail type mounting structure is used by the locomotive underframe parts, the positions of the locomotive underframe mounting parts can be adjusted easily, the mounted parts can be prevented from abrading pipelines and cables under a locomotive, and therefore the operation safety of the locomotive is improved.

The invention discloses a plunger gas-lifting draining device used for a horizontal gas well and a production method. The device comprises a self-buffering plunger and a uniflow device which are arranged in an oil pipe, the oil pump comprises two sections of pipelines who have different pipe diameters and are connected by a reducing short section, the self-buffering plunger is arranged in the part, which is located at the upper part of the reducing short section, of the pipeline, the uniflow device is used for controlling a gas liquid to flow unidirectionally from bottom to top and arranged inthe part, located at the lower part of the reducing short section, of the pipeline, the shaft accumulated fluid can be lifted to the upper part of the uniflow device by the own energy of the gas well, is delayed, and is lifted to the well mouth by the aid of the self-buffering plunger, and drainage production is completed. A downhole tool of an existing plunger device is simplified; the functionof gas liquid unidirectional flow is realized by the uniflow device, the structure is simple and easy to put and slave, the own lifting capacity of the gas well is effectively utilized, the shaft accumulated fluids of the horizontal gas well bottom part inclined shaft part and horizontal section are lifted, the shaft liquid column height is reduced greatly, the gas yield is increased, and the horizontal gas well draining gas production difficulty is effectively solved.

The invention relates to an old roof waterproof heat-preservation energy-saving construction device and method. The device comprises a machine frame, an unwinding roller, a high-pressure blowtorch anda moving mechanism, wherein the unwinding roller is rotationally connected to the machine frame and used for winding a waterproof coiled material, the high-pressure blowtorch is arranged on one sideof the unwinding roller, a nozzle of the high-pressure blowtorch faces the unwinding roller, the moving mechanism is arranged on the machine frame and drives the high-pressure blowtorch to move in theaxial direction of the unwinding roller, the moving mechanism comprises a screw rod rotationally connected to the machine frame and a moving block in threaded connection with the screw rod, and the high-pressure blowtorch is mounted on the moving block. According to the old roof waterproof heat-preservation energy-saving construction device and method, an operator can conveniently heat and lay the waterproof coiled material on an old roof, the labor intensity of the operator is reduced, and the construction efficiency of waterproof heat preservation transformation on the old roof is improved.

The invention discloses a welding table for a welding device. The welding table comprises a supporting frame body; a turn table is arranged above the supporting frame body; a worm is arranged under the supporting frame body and is engaged with a worm wheel; the worm wheel is connected with the bottom of the turn table through a rotary shaft; a crank handle is connected to one end of the worm; and a rotary arm clamping mechanism is further arranged at one end of the supporting frame body. The problems that existing welding workbench mechanisms are low in freedom degree and cannot conduct omnibearing fixing on workpieces are solved.

The invention discloses an intelligent household automatic cleaning sweeping robot, and particularly relates to the field of robots; the intelligent household automatic cleaning sweeping robot, comprises a sweeping robot and a charging base, wherein the sweeping robot comprises a sweeping robot base; a battery placement groove is formed in the top surface of the sweeping robot base; a charging connector fixing groove communicated with the battery placing groove is formed in the top face of the sweeping robot base; a charging connector copper piece is fixedly installed on the bottom face of thecharging connector fixing groove; a compression spring is fixedly installed at the end of the charging connector copper piece; a protection cover fixing device is welded to the end of the charging connector copper piece; and a noise reduction device is movably arranged on the outer surface of the sweeping robot base in a sleeving mode. An insulating layer is fixedly arranged on the outer surfaceof a charging plug in a sleeving mode, so that a wire cannot be exposed, the circuit short circuit of the equipment due to the foreign matters is avoided, and meanwhile, electric sparks and fire hazard generated due to the foreign matters are avoided, and the safety and applicability of the equipment are improved.

The invention discloses an urban drinking water source monitoring system and a monitoring method thereof. The monitoring system comprises a fixed bedplate, fixed bottom rods are arranged on the periphery of the bottom end of the fixed bedplate, trigger mechanisms are arranged at the middle upper end and the middle lower end of the fixed bottom rod at the front end of the right side, and a mounting ring is arranged at the middle upper end of the outer part of the fixed bottom rod at the front end of the left side. When liquid water is injected into the detection water frame, a floating net plate and a cleaning lantern ring are driven to move upwards through buoyancy, the cleaning lantern ring penetrates through the lower end of the outer portion of a detection rod head, and when a water body in the detection water frame is drained away through an electromagnetic valve, the floating net plate moves downwards and drives the cleaning lantern ring to move downwards; if the detection rod head is detected, the bottom end of the outer part of the detection rod head is moved and rubbed through the cleaning lantern ring, so that the outer part of the detection rod head is automatically processed, and the situation that the detection result is not standard enough and errors are generated when the detection rod head is detected next time is prevented.

The invention relates to a panel connection method applied in decoration panels and building materials. Panels include the panel A and the panel B. A U-shaped butt joint end is arranged on one side of the panel A and comprises an upper edge end, a butt joint opening and a lower edge end. An inverted-T-shaped butt joint end is arranged on one side of the panel B and comprises an upper edge butt joint end, a lower edge butt joint end and a base. A nailing position is arranged on the overlapped part of the lower edge butt joint end and the base. The width of the upper edge end is larger than that of the lower edge end. When the panel A and the panel B are spliced, the panel construction method includes the following steps that firstly, the panel B is placed at an installation position, then a screw is screwed in the nailing position of the panel B, and the panel B is fixed to the installation position through the screw; and secondly, the U-shaped butt joint end of the panel A is inserted in the inverted-T-shaped butt joint end of the panel B which is fixed well in the first step so that the panel A and the panel B can be spliced together. The panel construction method is low in rejection rate, long in service life, low in cost and good in effect.

The invention provides an adjustable multifunctional rubber tire processing device which includes a horizontal bottom plate, supporting frames, an inverted U-shaped fixing frame, an air rod, a horizontal connecting frame, a longitudinal mounting frame, a pressure wheel, a side mounting frame, a softening fan, a cooling fan, a bottom supporting buffer frame structure, a bottom wheel frame, a conveying roller, a conveyor belt, a conveying motor, an adjustable positioning frame structure, a drive storage frame structure and an easy-to-disassemble winding frame structure. The supporting frames areinstalled on the left and right sides of the upper middle part of the horizontal bottom plate in a bolted mode; the inverted U-shaped fixing frame is installed on the upper parts of the supporting frames in a bolted mode; the air rod is installed on the middle lower part of the top end of the inverted U-shaped fixing frame; and the horizontal connecting frame is installed on the lower part of theair rod in a bolted mode. A positioning roller is axially connected to the lower part of the inner side of a mounting roller frame, pushing of a tread rubber passing through the upper side of the conveyor belt is facilitated during use, so that the tread rubber is prevented from tilting upwards after being squeezed by the pressure wheel, and the tread rubber can be positioned.

The invention discloses a school bag. The school bag comprises a school bag body, a zipper, straps, a locking assembly, a battery, a palm vein collection screen and a control system; the school bag body is provided with the zipper, the straps, the palm vein collection screen, a solar power generation board and a battery pack, and the battery is arranged in the battery pack; the locking assembly comprises a puller, a fixing piece, a first connecting piece, a second connecting piece, locking pieces, driving pieces, rotating pieces, threaded rods and sliding pieces. The invention provides an anti-theft system of the school bag. The anti-theft system comprises a palm vein collection module, a palm vein storage module, a palm vein recognition module, a controller, a display module, a driving module, an alarm module, a positioning module, a signal transceiving module and a wireless communication module. The anti-theft system has a positioning function, unlocking is conducted by using a palmvein technique, the operation is simple, the efficiency of recognizing the palm veins is high, the recognition accuracy is high, the safety is excellent, the energy is saved, and the environment is protected.

The invention provides an elevator buffer device convenient to disassemble and assemble. The device comprises an elevator shaft, a left side slide rail, left side slide blocks, a lift car, an upper side buffer positioning frame structure, a rubber plate, a longitudinal support rod, a transverse mounting plate, a side edge reinforcing plate, a conveniently-disassembled connecting frame structure, alimiting slide groove, a bottom buffer frame structure, a right side slide rail and right side slide blocks. The left side slide rail is embedded into the left side of the inner wall of the elevatorshaft; and the left side slide blocks are installed on the upper portion and the lower portion of the left side of the lift car through bolts and meanwhile, clamped to the inner sides of the left sideslide rail in a sliding manner. The lift car is arranged at the upper part of the inner side of the elevator shaft; and the upper side buffer positioning frame structure is mounted at the lower partof the lift car. Connecting bolts are arranged at the inner sides of bolt grooves and meanwhile penetrate through upper side connecting plates to be in threaded connection with transverse plates, theupper side connecting plates and the transverse plates can be conveniently connected through the connecting bolts in the using process, and the transverse plates at the left side and the right side can be conveniently separated after the connecting bolts are detached.

The invention discloses a self-positioning clamping type packaging box which comprises a box body and a box cover, wherein the box cover is arranged on the upper side of the box body in a buckled mode, the centers of the inner walls of the box body and the box cover are composed of anti-collision assemblies. Each anti-collision assembly comprises an outer-layer box board, an inner-layer box board,circular rings and supports, wherein the supports are fixedly connected with the inner walls of the outer-layer box board and the inner-layer box board, and the outer sides of the inner and outer circular rings are fixedly connected with the inner-layer box board and the outer-layer box board correspondingly. The composite type anti-collision packaging box for transportation is scientific and reasonable in structure and safe and convenient to use; the box body, the outer-layer box boards, the inner-layer box boards, first supporting boards, second supporting boards, the supports and the circular rings are arranged and cooperate with one another, so that the stability of a plurality of triangles formed by the supports, the outer-layer box boards and the inner-layer box boards and the anti-pressure capacity of the cambered surfaces between the supports and the circular rings both greatly enhance the anti-pressure and anti-impact capacity between the outer-layer box boards and the inner-layer box boards, and then the packaging box has enough anti-impact capacity to prevent the deformation problem when being impacted.

The invention provides a coke tower decoking device for a needle coke production process, which belongs to the technical field of decoking equipment, and comprises a coking tower, an eduction tube, aneduction flange, a mounting cover, a driving motor, a driving gear, a driven gear and a scraping jet frame structure, the eduction tube is welded at the lower part of the coking tower; the leading-out flange is welded at the lower part of the leading-out pipe; the mounting cover is mounted at the upper part of the coking tower through bolts; the driving motor is mounted on the right side of the upper part of the mounting cover through bolts; and the driving gear is arranged on the inner side of the mounting cover. Through the arrangement of the liquid pumping pipe, the liquid storage tank andthe booster pump, water liquid in the liquid storage tank is pumped through the liquid pumping pipe by utilizing the booster pump, so that the water liquid is sprayed from the spray head to the innerwall of the coking tower through the liquid guide pipe, the liquid leading-in pipe, the confluence pipe and the inner ring of the sealing bearing and finally through the longitudinal transmission pipe and the transverse material conveying pipe; therefore, the cleanliness of the inner wall of the jet coking tower is improved.

The invention relates to modular furniture with all boards connected. The modular furniture comprises a T-shaped connecting part and an L-shaped connecting part. The T-shaped connecting part comprises a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are connected through a turning connecting piece. The turning connecting piece is provided with a first clamping part, and the first connecting plate is provided with a first matching part matched with the first clamping part. The L-shaped connecting part comprises a first right-angle side and a second right-angle side. Three-point lock catches used for fixed connection are arranged at one side of the second right-angle side. The three-point lock catches are inlaid and fixed into an inner cavity of the second right-angle side, and locking clamping heads are further reserved. Fixed grooves matched with the locking clamping heads in position are formed in the side to be fixed of the first right-angle side. The T-shaped connecting part and the L-shaped connecting part are adopted between the boards of the modular furniture. The structural and dimensional design of each board body is reasonable, the cross-section shape of the concave-shaped board bodies is reasonable in design, the three-dimensional effect and overall decoration effect after installation are good, and the modular furniture is attractive and elegant. Meanwhile, the boards of the cavity structure have a sound absorption effect.

The invention relates to the technical field of perfect binding covering machines, and discloses an elliptical perfect binding covering machine with a positioning device. The covering machine comprises a covering main body, the left side of the front surface of the covering main body is fixedly connected with a control box, the control box is internally provided with a controller and a chip, the upper surface of the covering main body is fixedly connected with an elliptical supporting piece, a placing plate is slidably connected to the outer side wall of the elliptical supporting piece, a round hole is formed in the left side of the interior of the placing plate, and a photoelectric sensor is embedded in the front surface of the placing plate. According to the machine, a worker can directly place a pile of book blocks between clamping plates and the placing plate; at the moment, the photoelectric sensor detects that paper is placed in, a single-chip microcomputer sends information to the controller, the controller immediately controls displacement sensors, and the displacement sensors start to detect the moving conditions of the clamping plates in real time; and in this process, the bottoms of the book blocks make contact with a cylinder, the bottoms of the book blocks and the cylinder have a relative sliding relation, the book blocks are not tightly clamped by the clamping plates, and the bottoms of a stack of book pages can move to be flush.

The present invention provides a feeding device for food packaging. The feeding device for food packaging includes a longitudinal fixing frame, an oblique fixing frame, an auxiliary material lifting rack structure, a classification guiding-out structure, a transverse cushion frame, a powder storage hopper, a quantitative material guiding-out frame structure, a fixing bottom plate, a material bag conveying frame, a material bag conveying roller, a conveying motor, a material bag conveyor belt, a console, a tool storage frame and a cross-shaped splitting plate. The oblique fixing frame is installed on the upper side of the longitudinal fixing frame through bolts. According to the feeding device for food packaging, a guiding-out mesh plate is inclined from the left to the lower right, coarsewaste is advantageously and conveniently guided into a finished product guiding-out pipe during using, meanwhile, powder materials are guided to the bottom of a guiding-out frame, and the powder materials are screened better. Spiral blades are welded to the outer side of a transmission rod, a stepping motor is advantageously and conveniently used for driving the spiral blades to rotate through thetransmission rod, the materials are conveniently conveyed to the lower side, the materials stop on the inner sides of the spiral blades when the spiral blades are stopped, and therefore quantitativeaddition of the materials is achieved.

The invention provides an adjustable automatic ejector for a traditional Chinese medicine slicer. The ejector comprises a transverse bottom plate, anti-skid supporting legs, a mounting frame, a transverse conveying frame structure, a longitudinal mounting frame, a transverse mounting plate, a side supporting plate, an adjustable fixing frame structure, an adjustable mounting frame structure, an auxiliary jacking frame structure, a side mounting frame, a fixing hoop, a lifting cylinder, a cutter and a cutting seat, wherein the anti-skid supporting legs are connected to the four corners of the lower portion of the transverse bottom plate in a glued mode; the mounting frame is installed at the upper portion of the transverse bottom plate through bolts; the transverse conveying frame structure is installed at the upper portion of the inner side of the mounting frame; and the longitudinal mounting frame is installed at the left side of the upper portion of the mounting frame through bolts. A jacking spring is arranged on the upper portion of the inner side of a movable frame, and a jacking wheel can be conveniently used for jacking medicinal materials during use; and a threaded pipe is in threaded connection with the outer side of a threaded rod, so that the medicinal materials can be conveniently pushed to the right side during use.

The invention discloses an intelligent buried type garbage sorting, collecting and transferring system and belongs to the technical field of garbage sorting and treatment. The intelligent buried typegarbage sorting, collecting and transferring system comprises a plurality of types of garbage bags, a garbage collecting device, a mobile terminal and a remote management center, wherein each type ofgarbage bag is provided with a garbage sorting code; the garbage collecting device is used for sorting, recognizing and weighing the garbage; the mobile terminal is in control connection with the garbage collecting device; the remote management center is connected with the garbage collecting device and the mobile terminal; the garbage collecting device comprises a micro-processor, a lifting mechanism and a garbage passage; the garbage passage is provided with a code scanning device and a weighing sensor; the code scanning device is used for recognizing the code on each garbage bag; and the weighing sensor is used for weighing each garbage bag and sending data information to the micro-processor. The intelligent buried type garbage sorting, collecting and transferring system solves the problems that an existing garbage sorting and treatment system cannot realize effective garbage sorting from the source, implements no sorted recycling in clearing, transfer and recycling, and cannot realize the aim of sorted treatment and recycling.

The invention relates to a heat preserving and energy saving structure for an outer wall of an old house and a modification construction technology thereof. The structure comprises multiple heat preserving plates, grid cloth and anti-crack mortar, wherein the heat preserving plates are bonded to the surface of the outer wall, the grid cloth is bonded to the sides, away from the outer wall, of theheat preserving plates, and the anti-crack mortar covering the grid cloth. Connecting parts are detachably connected to the peripheries of the heat preserving plates. A filling groove is formed between every two adjacent heat preserving plates through two connecting parts. Seam filling blocks made of the same material as that of the heat preserving plates are arranged in the filling grooves. The seam filling blocks are filled between every two adjacent heat preserving plates, the seam filling blocks are fully filled into gaps between every two heat preserving plates, the gaps between every twoadjacent heat preserving plates are reduced, and the heat preserving effect of the outer wall is improved.

The invention relates to a board connection structure, which is applied to decorative sheets and building materials. An upper edge end and a lower edge end are fixed on one side of a board A, the upper edge end approaches to the front side of the board A, and the lower edge end approaches to the back surface of the board A; a butt joint hole is formed in one side of the board A and is positioned between the upper edge end and the lower edge end; an upper edge butt joint end, a lower edge butt joint end and a base are fixed on one side of a board B, the upper edge butt joint end approaches to the front side of the board B, the base approaches to the back surface of the board B, and the lower edge butt joint end is positioned between the upper edge butt joint end and the base; the lower edge butt joint end is in clearance fit with the butt joint hole; when a concave shape butt joint end and a convex shape butt joint end are spliced, the lower edge butt joint end is inserted into the butt joint hole, the upper edge butt joint end and the upper edge end are opposite, and the lower edge butt joint end and the base are opposite; the overlapping part of the lower edge butt joint end and the base is provided with a nailing position; the upper edge end is wider than the lower edge end. The board connection structure has the advantages of low rejection rate, long service life, low cost and good effect.

The invention provides an intelligent suction crane based on an optical-mechanical-electrical integration technology. The intelligent suction crane comprises a fixed underframe, a bottom fixed frame,a longitudinal support, a cross beam, a ball bearing, a reinforced support structure, a top rotating frame structure, a rectangular cross rod, a fixed seat, a roller bearing, a threaded rod, a movablehanging frame structure, a rotating motor, a winding motor, a winding roller, a steel wire lifting rope, a transverse plate, fixed suckers, adjustable fixed frame structures, a control table, a controller and control buttons, wherein the bottom fixed frame is welded to the upper part of the fixed underframe. According to the intelligent suction crane, a driven gear is arranged on the upper part of the cross beam through bolts and is engaged with a driving gear so that the cross beam can rotate on the outer ring of the ball bearing, and the position angle of the cross beam can be convenientlyadjusted; and a positioning wheel shaft is connected to the inner side of a wheel frame through a shaft and is in contact with the outer wall of the longitudinal support, so that the positioning of the cross beam is facilitated, and the situation that normal use is affected due to the fact that the cross beam inclines to one side is avoided.

The invention relates to the field of building materials, in particular to a steel galvanized group corner combining piece. The steel galvanized group corner combining piece comprises a steel subsidiary frame, an intermediate corner combining section plate is arranged at the corner of the steel subsidiary frame, the two sides of the intermediate corner combining section plate are provided with side edge corner combining section plates respectively, and the side edge corner combining section plates and the intermediate corner combining section plate are fixed through screws. According to the steel galvanized group corner combining piece, the side edge corner combining section plates and the intermediate corner combining section plate cooperate and are fixed through the screws, the steel subsidiary frame is stably fixed, welding is not needed, the structure and performance of sections cannot be damaged, later assembly is simple and quick, and the material and labor cost can be effectively reduced; during construction, wall whitewashing and plastering can be conducted to easily achieve the effect that the exterior is low and the interior is high, the defect that welding is needed whenan existing square pipe replaces the steel subsidiary frame is overcome, and rainwater can also be prevented from penetrating into a room; during installation, gaps between a window and a wall can bemore precise, the function of locating the window can be achieved, and the working efficiency is improved. The problem is solved that since the steel subsidiary frame is made of hot-dip galvanized steel, high-temperature welding is not suitable during later galvanizing processing.

The invention provides a waste plastic recycling equipment for cable production, which includes a fixed outer frame, a cable conveying positioning frame structure, an adjustable cable top-tightening fixing frame structure, an adjustable cable peeling frame structure, a longitudinal fixing plate, and a separating scraper , material guide plate, crushing motor, crushing knife, export frame, protective door, material skin storage chamber, wire core storage chamber, guide cover and wire core rolling frame structure, and the cable conveying positioning frame structure is installed on the fixed outer frame The upper left side of the upper part; the adjustable cable top fastening frame structure is installed on the upper part of the cable conveying positioning frame structure; the adjustable cable peeling frame structure is installed on the upper right side of the cable conveying positioning frame structure. The crushing teeth of the present invention are respectively welded on the outer sides of the crushing teeth, which is beneficial to use the crushing motor to drive the crushing teeth to rotate during use, thereby facilitating the extrusion function of the wire core passing through the inner side of the crushing teeth, thereby facilitating the gathering The cores that are together are separated.

The invention provides a coking tower decoking device used in the production process of needle coke, which belongs to the technical field of coking equipment and includes a coking tower, an outlet pipe, an outlet flange, a mounting cover, a driving motor, a driving gear, a driven gear and Scraping spray rack structure, the outlet pipe is welded at the lower part of the coking tower; the outlet flange is welded at the lower part of the outlet pipe; the installation cover bolt is installed at the upper part of the coking tower; the drive motor bolt It is installed on the upper right side of the installation cover; the driving gear is arranged on the inner side of the installation cover. The arrangement of the liquid suction pipe, the liquid storage tank and the booster pump of the present invention uses the booster pump to extract the water liquid in the liquid storage tank through the liquid suction pipe, so as to pass through the catheter tube, the liquid introduction tube, the confluence tube and the sealed bearing Finally, through the longitudinal transmission pipe and the transverse feed pipe, the water is sprayed from the nozzle to the inner wall of the coking tower, thereby increasing the cleanliness of the inner wall of the spraying coking tower.

The invention provides a waterproof structure of an automobile connector. The waterproof structure of the automobile connector comprises a sheath, an end cover, a waterproof bolt and at least two clamping pieces, wherein at least two threading channels are arranged in the sheath, an upper accommodating groove is formed in an end surface of one end of the sheath, at least two waterproof holes are formed in the waterproof bolt, the waterproof bolt is arranged in the accommodating groove, the waterproof bolt is in interference fit with the accommodating groove, the threading passages, the waterproof holes and threading holes are arranged in one-to-one correspondence, at least two clamping grooves are formed in a side wall of the waterproof bolt and are arranged along a circumferential direction of the waterproof bolt, one end of each clamping piece penetrates through an outer wall of the sheath and is embedded into the clamping groove, and the clamping pieces are in interference fit withthe clamping grooves. The waterproof structure of the automobile connector has good waterproof performance.

The invention provides a multi-protection structure-based intelligent roller blind device for an agricultural greenhouse. The multi-protection structure-based intelligent roller blind device for the agricultural greenhouse comprises a greenhouse body, bottom fixing frames, a left reinforcing rib, a right reinforcing rib, an aluminum alloy hollow plate, a left fixing frame, a right fixing element,an intermediate protective frame structure, a left arc-shaped rod, a right arc-shaped rod, a left roller blind, a right roller blind, winding frame structures, positioning frame structures and a control frame structure, wherein the bottom fixing frames are arranged at the front side and the rear side of the lower part of the greenhouse body through bolts. A top protective cover is arranged at theupper end of a longitudinal rod through screws, and a sunscreen function for the retracted left roller blind and the right roller blind in use is facilitated, so that the left roller blind and the right roller blind are prevented from being frequently exposed to the sun to be damaged; and puller bolts penetrate through side fixing pipes and are in threaded connection with the upper end of the leftarc-shaped rod or the right arc-shaped rod, so that a good fixing effect on the upper end of the left arc-shaped rod or the right arc-shaped rod in use is facilitated.

The invention provides a distillation system for preparing furfural, which comprises a distillation tower, a bottom fixing frame, a leading-in pipe, a leading-in valve, a stock solution box, a leading-in condensation frame structure, a gas outlet pipe, a circulating condensation frame structure, a leading-out pipe, a leading-out valve, a furfural metering tank, a discharge pipe, a discharge valve, a material receiving frame structure convenient to disassemble and a buffer support frame structure, the bottom fixing frame is mounted at the lower part of the distillation tower through bolts; the leading-in pipe is inserted into the lower part of the left side of the distillation tower; the leading-in valve is in threaded connection with the left side of the leading-in pipe; and the stock solution box is welded on the left side of the leading-in pipe. First semiconductor chilling plates are arranged in a staggered mode, the cooling speed of gas passing through the cooling pipe can be increased in the using process, and therefore the cooling speed of the gas can be increased; a jacking spring is arranged on the upper portion of the inner side of the supporting pipe, the buffering function can be achieved when the connecting cover is supported, and then the fixing disc and the bottom flange can be tightly attached.

The invention discloses a school bag. The school bag comprises a school bag body, a zipper, straps, a locking assembly, a battery, a palm vein collection screen and a control system; the school bag body is provided with the zipper, the straps, the palm vein collection screen, a solar power generation board and a battery pack, and the battery is arranged in the battery pack; the locking assembly comprises a puller, a fixing piece, a first connecting piece, a second connecting piece, locking pieces, driving pieces, rotating pieces, threaded rods and sliding pieces. The invention provides an anti-theft system of the school bag. The anti-theft system comprises a palm vein collection module, a palm vein storage module, a palm vein recognition module, a controller, a display module, a driving module, an alarm module, a positioning module, a signal transceiving module and a wireless communication module. The anti-theft system has a positioning function, unlocking is conducted by using a palmvein technique, the operation is simple, the efficiency of recognizing the palm veins is high, the recognition accuracy is high, the safety is excellent, the energy is saved, and the environment is protected.

The invention provides a thermal insulation device for on-line coated glass production, which includes a device shell, an air outlet pipe, a motor, fan blades, high-temperature silicic acid fiber cotton, a movable door, a movable mounting frame structure, and a locking, buffering and fixing frame structure. Sleeve protective bearing frame structure, steam radiator, inlet pipe, connecting pipe, steam pressure control valve, protective cover and steam control circuit, the air outlet pipe is plugged into the upper left and right sides of the device shell; the motor Bolts are installed in the middle and upper part of the device casing, while the output shaft of the motor runs through the top of the device casing. The upper screw of the horizontal protective plate of the present invention is equipped with a rubber protective pad, which is beneficial to avoid damage caused by falling when the glass is operated on the front side of the dodge door; the buffer spring is arranged on the inner upper part of the buffer frame, which is beneficial to facilitate the operation of the glass during use. The limiting plate acts as a tight cushioning function, so as to play a cushioning function when the positioning rod is used to support the transverse protective plate.