31results about How to "Prevent compromising security" patented technology

The invention discloses an experimental device for a flow field display. An air inlet and an air outlet are arranged at two ends of a pipeline respectively; a trace gas generating device is arranged in the pipeline and is close to the air inlet; an axial-flow fan is arranged in the pipeline and is close to the air outlet; an observation section is arranged on the pipeline with the trace gas generating device and the axial-flow fan; a model control device is arranged in the observation section; a laser sheet cutting flow field device and an image data acquisition control device are arranged above the observation section; a steady flow tube bundle is arranged in the pipeline between the trace gas generating device and the observation section; a computer is connected with the model control device, the image data acquisition control device and the axial-flow fan through data transmission lines; and a fan frequency conversion control device is connected between the computer and the axial-flow fan. The experimental device is simple and convenient in control, acquires reliable experimental data and is used for qualitative experimental research for a flow field.

The invention discloses an extraction condensing heating system additionally provided with a steam ejector and an adjusting method of the system. The system comprises a boiler, an extraction condensing type turbine unit, the steam ejector, a steam cooler, a temperature and pressure reducing device, a throttle orifice plate and a control valve. Two inlets of the steam ejector are connected with a turbine main steam pipeline and a medium pressure cylinder steam exhaust pipeline correspondingly, an outlet is connected with the steam cooler, a water inlet pipe and a water outlet pipe of the steamcooler are connected with a boiler water supply pipeline, the boiler water supply pipeline is provided with the throttle orifice plate, a steam outlet pipeline of the steam cooler is connected with the temperature and pressure reducing device, and the temperature and pressure reducing device is further connected with a high pressure cylinder steam exhaust pipe. Compared with the prior art, the unit emergency heating ability is improved on the premise of not affecting unit safety, it is ensured that a power plant can also meet heating requirements when some units break down and stop, meanwhile,the irreversible loss of the emergency heating process is effectively reduced compared with traditional emergency heating measures, and unit heating and energy saving effects are better.

The invention discloses a diesel engine generator set digital type joint operating vehicle control device for an oil drilling rig, comprising a joint operating vehicle control integration system 16, a circuit breaker control system 4, a power limit unit 5 and an external input-output circuit 3; the joint operating vehicle control integration system 16 comprises a signal detection unit, a signal data processing unit, a system protection unit, a system alarm unit, a joint operating machine control unit, a voltage and speed regulating output unit, a power distribution unit, an input-output unit, a PID adjustment unit, a logic control unit, and a liquid crystal display screen; and a signal input conductor which is connected with the joint operating vehicle control integration system 16 is used as a shielding line. As the further improvement, the joint operating vehicle control integration system 16 selects a Woodwad easygen 3200 joint operating vehicle module; a voltage isolator is arranged between the Woodwad easygen 3200 joint operating vehicle module and a generator 1; and the power limit unit 5 uses a power transducer. The invention has the advantage that the control device can still operate smoothly, stably and easily under the terrible working conditions of harmonic resistance, interference resistance, and sudden load adding reduction.

The invention relates to the technical field of industrial waste residue treatment, and discloses a high-strength industrial waste residue treatment device with a filtering function. A filtering box is integrally mounted at the upper half part of one side of a treatment box, a drying box is integrally mounted at the lower half part of the other side of the treatment box, a mounting frame is fixedly mounted on the upper surface of the filtering box, an air cylinder is installed on the upper surface of the mounting frame, a liquid leakage plate is installed in the middle of the interior of the filtering box, and a desulfurization box is installed on the portion, above the drying box, of one side of the treatment box. Waste residues and waste liquid in industrial waste residues are separatedin an extrusion mode through the effect of the air cylinder, the waste liquid can be effectively filtered through the liquid leakage plate and a filter screen, and the situation that waste liquid exists in the waste residues, and later treatment of the waste residues is affected is prevented. A desulfurization agent in the desulfurization box is sprayed into the treatment box under the action of awater pump, and therefore the waste residues can be desulfurized, and environmental pollution is avoided.

The invention discloses a wall template split bolt construction method. According to the method, two parallel templates are arranged in the position of a wall to be poured, the templates are penetrated by sleeves, a plurality of clamps are installed above the templates in a suspension mode, fixing bolts of the clamps are connected through fixing rods, and the fixing bolts are screwed through fixing nuts to fix the fixing rods; the templates and the clamps are penetrated by rebars, so that the rebars pass through the sleeve; a plurality of sealing spacers are arranged at the two ends of each rebar, and sealing nuts are arranged on the outer portions of the sealing spacers; the tops of adjacent angle steel pipes are arranged in the two sides of each connecting rod in a sleeved mode and sleeved with limiting blocks, the connecting rods are fixed by the limiting blocks, and a sealing steel board connected with each angle steel pipe is arranged on the bottom of the corresponding angle steel pipe, so that the sealing steel boards are connected with the bottoms the templates, and the angle steel pipes are connected with the rebars; reinforced concrete is poured into the gaps between the clamps; the sealing steel boards, the limiting blocks, the connecting rods, the angle steel pipes, the sealing nuts, the sealing spacers, the rebars, the fixing nuts, the fixing rods, the clamps and the templates are dismantled; the portions, exposed on the two sides of the wall, of the sleeves are cut, and sealing cover boards are connected with the two sides of the sleeve in a welded mode.

The invention discloses a surface pretreatment process for steel wire processing, which comprises the following steps: step 1, conveying a steel wire through a feeding roller of pretreatment equipment, then leading the steel wire through a traction mechanism of the pretreatment equipment, then pulling the steel wire, and then resetting a sliding piece; 2, acid leaching is conducted, then the steel wires are cleaned, and leakage prevention treatment is conducted through a draught fan box during cleaning; the invention relates to the technical field of steel wire processing. According to the surface pretreatment process for steel wire processing, the steel wire is conveyed through the feeding roller of the pretreatment equipment, then the wire is led through the traction mechanism of the pretreatment equipment, and then the steel wire is pulled, so that the steel wire can quickly penetrate through the treatment box without opening the box for operation, and internal acid mist can be effectively prevented from leaking to influence safety; and through anti-leakage treatment, an effective protection effect can be achieved, the overall safety performance is high, and wire leading is convenient.

The invention provides a preparation method of blended fabric suitable for an exercise mat. The principal raw material comprises a polygonum multiflorum rattan single fiber, cotton fibers and polyester fibers, wherein the proportion of the polygonum multiflorum rattan single fiber exceeds 2 / 3, the waste can be used, and the prepared fibers have the remarkable anti-bacterial effects. A covering yarn mode is used because the spinning property of the polygonum multiflorum rattan fiber is poorer, the covering yarn is formed by using the cotton fibers for covering and blended with Dacron. Although the content of the cotton fibers and the polyester fibers is not higher than 30% still, the appearance of the blended fabric is beautiful, and even a lot of the cotton fibers on the surface layer is worn after the long-term use, and the polygonum multiflorum rattan single fiber is exposed, the blended fabric still has not the burr feeling. In conclusion, the prepared blended fabric suitable for the exercise mat has the characteristics of low cost, good safety, and good anti-bacterial effect, and is a novel fiber suitable for the requirement of modern sports equipment.

The invention discloses an induction type automobile door step lamp and anti-pinch device switch based on a Hall element. The induction type automobile door step lamp and anti-pinch device switch comprises a Hall component, a signal amplifier and a wiring harness. The Hall component comprises the Hall element and a magnet. The Hall element and the magnet are mounted at corresponding positions of a door edge and a door frame correspondingly. The output of the Hall element is connected with the signal amplifier through the wiring harness. The output of the signal amplifier is connected to a finished automobile electric system through the wiring harness. The finished automobile electric system is connected to control the work states of an automobile door step lamp and an anti-pinch device. According to the induction type automobile door step lamp and anti-pinch device switch, the Hall element and the magnet are mounted at the corresponding positions of the door edge and the door frame correspondingly; in the door opening process, the Hall element moves far away from the magnet, in the door closing process, the Hall element moves close to the magnet, and variation of induction signals is generated, so that switch signals of the switch are precise and do not need to be adjusted; the situation that safety is affected due to malfunction of door caused by signal error can be effectively prevented; and meanwhile, work difficulty of site workers is lowered, and production efficiency is improved.

The invention discloses a working method of a charging pile for a new energy automobile. Charging equipment is included. According to the charging pile for the new energy automobile, through the cooperation of a positioning cylinder and a limiting cylinder, a movable rod is prevented from falling out of the charging equipment in the moving process, and the power transmission efficiency is prevented from being influenced; through the cooperation of compression springs and connecting rods, the two connecting rods are kept in a connected state in the using process, the situation that in the charging process, the two connecting rods are loosened, and consequently the automobile cannot be charged is avoided; and through arrangement of a pushing rod 10, the situation that the automobile is on fire in the charging process, and the safety of people is affected is avoided.

The invention discloses a fastening structure of a through-wall cover of an automatic teller machine (ATM) machine. The fastening structure is used for fixing the through-wall cover to a rack of the ATM machine, a screw hole is formed in the rack, the fastening structure of the through-wall cover of the ATM machine comprises a cushion block, a fastening screw and a compaction member, a placing hole and a sliding groove communicated with the placing hole are formed in the through-wall cover, the cushion block is placed in a gap between the through-wall cover and the rack through the placing hole and slides along the sliding groove, the compaction member is arranged on the outer side of the through-wall cover, and the fastening screw can sequentially penetrate the compaction member and the cushion block to be screwed in the screw hole in the rack so as to fix the through-wall cover to the rack. By means of the fastening structure, the assembling efficiency is high, material costs are low, and meanwhile, safety can be guaranteed.

The invention discloses a protective clothing background data acquisition and alarm system based on the Internet of Things, relates to the field of data acquisition and analysis, solves the technical problem that the real-time state of protective clothing cannot be analyzed through data acquisition in the use process of the protective clothing in the prior art, and performs data acquisition and analysis on the protective clothing, so that the real-time state of the protective clothing can be analyzed. Whether the real-time operation state of the protective clothing is abnormal or not is judged, so that the operation efficiency of the protective clothing is improved, and the situation that the safety of a user is affected due to low protection efficiency caused by the abnormality of the protective clothing is prevented; data analysis is conducted on the real-time environment of the protective clothing, whether the environment of the protective clothing is qualified or not is judged, and it is prevented that the protective clothing is affected by the environment, the safety protection efficiency of the protective clothing is reduced, the use quality of a user is reduced, and meanwhile the infection risk of the user is increased; the protective clothing used in real time is subjected to use analysis, and the use intensity of the corresponding protective clothing is judged, so that the situation that the safety efficiency of the protective clothing is reduced due to abnormal use is prevented.

The invention relates to the technical field of supercritical drying equipment, and discloses a supercritical carbon dioxide drying device which comprises a storage tank, a high-pressure pump, a drying heater and a drying kettle which are sequentially communicated through pipelines, and further comprises an identification detection module and a control module. The high-pressure pump, the drying heater and the identification detection module are electrically connected with the control module; the recognition and detection module is used for detecting the states of CO2 and materials and uploading the states to the control module; and the control module is used for analyzing the state information of the CO2 and the drying material and adjusting the drying device. The state of the drying process is detected through intelligent control, automatic adjustment is carried out, the dependence of the device operation process on professional technicians is reduced, intelligent data analysis response is rapid, problems are found in time, and tedious manual operation is avoided through automatic adjustment.

The invention discloses a fast charging device of an electric vehicle, an application method and an electric vehicle. The fast charging device of the electric vehicle comprises a fast charging substrate, a servo motor, a turning cover, and a flexible waterproof structure; the servo motor is arranged on the fast charging substrate, and connected with a vehicle control unit; the turning cover is rotationally connected with the fast charging substrate; one end of the waterproof structure is fixedly connected with the turning cover and the other end is fixedly connected with the fast charging substrate, wherein the waterproof structure is connected with the servo motor, and the vehicle control unit controls the servo motor to drive the waterproof structure to stretch, and also drive the turning cover to rotate around the fast charging substrate, thus the turning cover is converted from one state into the other state. The fast charging device of the electric vehicle can adjust the flexible state of the waterproof structure through the servo motor, prevent the water inflow of the fast charging opening in rainy days from influencing on the charging safety; meanwhile, the opening position of the turning cover can meet the demands of different working states; the fast charging opening can be automatically closed through the servo motor, thus the safety grade and the practicability of the fast charging opening are promoted.

The invention relates to the technical field of new energy vehicles, and discloses a charging pile for new energy vehicles, comprising charging equipment, a positioning cylinder is fixedly installed inside the charging equipment, and a limiting cylinder is fixedly installed inside the positioning cylinder, so A movable rod is movably connected to the side of the limiting cylinder, one end of the movable rod penetrates and extends to the outside of the movable rod, one side of the movable rod is fixedly installed with a connecting rod, and the number of the connecting rods is two, The two connecting rods are movably connected. The charging pile for new energy vehicles, through the cooperation of the positioning cylinder and the limit cylinder, prevents the movable rod from falling out of the charging device during movement, which affects the efficiency of power transmission. The cooperation between the compression spring and the connecting rod makes the two connections During the use of the rod, the connected state is maintained to prevent the two connecting rods from loosening during charging, resulting in the car not being able to be charged, preventing the car from catching fire during the charging process and affecting people's safety.

The invention discloses a water area rescue helmet which comprises a water area rescue helmet shell, a pneumatic life buoy assembly, a second connecting belt and a buzzer, a water outlet penetrates through the water area rescue helmet shell, a graphene heating piece is embedded in the water area rescue helmet shell, and a swimming goggle assembly is placed on the water area rescue helmet shell. The swimming goggle assembly is clamped in an auxiliary fixing assembly, the pneumatic life buoy assembly is used for emergency rescue, the pneumatic life buoy assembly, a GPS positioner and a temperature sensor are all fixed to the front side of the water area rescue helmet shell, and the pneumatic life buoy assembly is arranged on the lower side of the GPS positioner and the lower side of the temperature sensor. The water area rescue helmet shell is fixed to the second connecting belt through rivets. The water area rescue helmet has the advantages that eyes can be protected during underwater rescue, a life buoy can be used during emergency rescue, heating and drying can be achieved in winter, and a user can be located, found and alarmed.

The invention discloses a system supporting device based on equipment integration, and relates to the technical field of communication equipment, the system supporting device comprises a mounting seat, a lifting mechanism, a placing seat, two fixing mechanisms, two position limiting mechanisms and two supporting damping mechanisms, the mounting seat is horizontally arranged, the lifting mechanism is rotatably connected to the mounting seat, and the placing seat is arranged on the mounting seat; the placing seat is slidably connected to the mounting seat, the lifting end of the lifting mechanism is connected with the bottom of the placing seat, the two supporting damping mechanisms are symmetrically arranged at the bottom of the mounting seat, the two fixing mechanisms are symmetrically arranged on the placing seat, and the two position limiting mechanisms are symmetrically arranged on the side wall of the mounting seat. The position of the mounting base is limited and fixed through the two position limiting mechanisms, and the situation that the position of the mounting base moves in the using process, and consequently the working safety of equipment is affected is prevented.

The invention discloses a pipe body constraining device used in pressure release of an air pressure explosion test for a high-pressure metal gas delivery pipe. The pipe body constraining device comprises a fixed station; the fixed station is provided with a pipe groove used for accommodating the high-pressure metal gas delivery pipe; two ends of the pipe groove are equipped with anchoring units; a plurality of sets of friction piles are arranged on the fixed station; each set of friction piles comprise two friction pile units; a fixing flexible steel rope for fixing the high-pressure metal gas delivery pipe is wound on each friction pile unit; a supporting layer is arranged below the pipe groove; a plurality of fixed piles are arranged on the supporting layer; and the tops of the fixed piles are aligned with the bottom end of the pipe groove. According to the invention, the axial movement of the high-pressure metal gas delivery pipe is restricted by the two anchoring devices; the fixing flexible steel ropes are wound on the high-pressure metal gas delivery pipe and fixed on the friction piles so as to better fix the high-pressure metal gas delivery pipe; and the plurality of fixed piles distributed below the pipe groove can avoid influence of insufficient bearing capacity of a foundation on safety.

The invention discloses a dual-redundancy front wheel turning monitoring method, which belongs to the technical field of aircraft flight control systems. The method includes the following steps: S1, monitoring whether there is a fault in bus communication; S2, judging whether there is a self-monitoring fault in front wheel turning; S3, monitoring the dynamic performance of front wheel turning, comparing the actual output of front wheel turning with the output of a front wheel turning dynamic performance model, and if the difference exceeds a specified difference value, determining that the front wheel has a turning fault; and S4, analyzing the fault state of the front wheel: under the condition that the front wheel turning communication at dual redundancies is normal and the fault state monitoring and dynamic performance monitoring are normal, if the swing reducing / turning state fed back by front wheel turning at dual redundancies or the turning deviation fed back is inconsistent for 200ms, determining that front wheel turning at dual redundancies fail, otherwise, keeping front wheel turning at dual redundancies normal; and when front wheel turning at dual redundancies fail, judging the failure of front wheel turning, and controlling front wheel turning in a swing reducing state.

A construction method for pulling bolts in the formwork of the wall. Two parallel formworks are set at the position of the wall body to be poured, the sleeve is passed through the formwork, several clamps are hoisted above the formwork, the fixing bolts of the clamps are connected by a fixing bar, and the fixing nuts are Tighten the fixing bolts to fix the fixing rod; pass the steel bar through the template and the fixture, so that the steel bar passes through the sleeve; set a number of sealing gaskets at both ends of the steel bar, and set sealing nuts outside the sealing gasket; set the top end of the adjacent angle steel pipe Insert the two sides of the connecting rod, cover the angle steel pipe with the limit block and fix the connecting rod, set the sealing steel plate connected with the angle steel pipe at the bottom of the angle steel pipe, make the sealing steel plate connect with the bottom of the template, and connect the angle steel pipe with the steel bar; Pour reinforced concrete into the gap between the clamps; remove the sealing steel plate, limit block, connecting rod, angle steel pipe, sealing nut, sealing gasket, steel bar, fixing nut, fixing rod, clamp and formwork; the sleeves on both sides of the wall will be exposed The barrel is cut, and the sealing cover is welded on both sides of the barrel.

The invention discloses a fastening structure of an ATM machine wall-through cover, which is used for fixing the wall-through cover on the frame of the ATM machine. The frame has screw holes. The fastening structure of the ATM machine wall-through cover is The structure includes a spacer, a fastening screw and a pressing piece. A placement hole and a sliding groove communicating with the placement hole are opened on the wall penetration cover. The spacer can be placed in the placement hole through the placement hole. Through the gap between the wall cover and the frame and move along the sliding groove, the pressing part is arranged on the outside of the wall cover, and the fastening screw can pass through the pressing part and the spacer in turn and screw into the machine The screw holes on the frame are used to fix the wall penetration cover on the frame. The present invention adopts the above-mentioned fastening structure, which not only has high assembly efficiency and low material cost, but also ensures safety.

The invention provides a preparation method of blended fabric suitable for an exercise mat. The principal raw material comprises a polygonum multiflorum rattan single fiber, cotton fibers and polyester fibers, wherein the proportion of the polygonum multiflorum rattan single fiber exceeds 2 / 3, the waste can be used, and the prepared fibers have the remarkable anti-bacterial effects. A covering yarn mode is used because the spinning property of the polygonum multiflorum rattan fiber is poorer, the covering yarn is formed by using the cotton fibers for covering and blended with Dacron. Although the content of the cotton fibers and the polyester fibers is not higher than 30% still, the appearance of the blended fabric is beautiful, and even a lot of the cotton fibers on the surface layer is worn after the long-term use, and the polygonum multiflorum rattan single fiber is exposed, the blended fabric still has not the burr feeling. In conclusion, the prepared blended fabric suitable for the exercise mat has the characteristics of low cost, good safety, and good anti-bacterial effect, and is a novel fiber suitable for the requirement of modern sports equipment.

The invention discloses a suspended floor structure and relates to the technical field of building walls. The suspended floor structure includes several core tubes and a floor body. Several core tubes are arranged in two rows, and the top of each row of core tubes is fixedly connected with the same I-shaped steel beam. The floor body is located in two columns. Between the steel girders, a load-bearing frame is arranged at the bottom of the floor body, and several fixing pieces are arranged on the load-bearing frame and the bottom of the floor body. The present invention is equipped with a locking device, which is beneficial to lock and fix the hanging steel bars at the top and bottom of the I-shaped steel beam through the U-shaped lock, and lock and fix the two U-shaped locks at the same time through the locking rod. Prevent the hanging steel bar from falling off, so as to ensure the firmness between the hanging steel bar and the I-beam.

The invention discloses an anti-seismic and flood control device of the Guyun Corridor Bridge and a construction method thereof. The base of the approach bridge is set above the anti-seismic and flood control mechanism. The anti-seismic plate connects the first anti-seismic and flood control mechanism and the second anti-seismic and flood control mechanism. The bridge base is connected to the bridge body, and the second anti-seismic and flood prevention mechanism is connected to the bridge body through the second steel column penetrating the approach bridge base. Its construction methods include: construction preparation, construction of the second earthquake and flood control mechanism, construction of the first earthquake and flood control mechanism, seismic slab construction and corridor bridge construction. The construction method of the invention has simple steps, not only can satisfy the construction of ancient canal corridor bridges with different widths of rivers, but also can greatly improve the anti-seismic and flood control capacity of the ancient canal corridor bridges, prolong the service life of the ancient canal corridor bridges, and reduce maintenance costs.

The invention discloses a recyclable large pallet. The recyclable large pallet comprises a leak-proof net, a load-bearing pallet, a small pallet and a plurality of load-bearing beams, wherein the leak-proof net is used for carrying the surrounding rock surface broken rock mass pressure, the load-bearing pallet is connected to the center of the leak-proof net and provided with a drop hole, the small pallet is used for carrying the load-bearing pallet and can pass through the drop hole after rotating, the load-bearing beams are used for carrying the surrounding rock pressure, and a plurality ofregular arranged net holes are formed in the surface of the leak-proof net; the load-bearing beams are radially connected to the edge of the load-bearing pallet; and an anchor rod installation hole for an anchor rod to pass through are formed in the small pallet. Under the condition of roadway large deformation convergence, because the load-bearing beams are radially connected to the edge of the load-bearing pallet, the pressure can be transmitted to the load-bearing pallet and the load-bearing beams after the leak-proof net is subjected to the surrounding rock pressure, the load-bearing beamsdeform and shrink compactly, thus the support force of the guard surface is higher and the support effect is more stable, and the appearance of net pocket is avoided; and meanwhile, the leak-proof net, the load-bearing pallet and the load-bearing beams can be recycled and reused, and the support cost is reduced.

The invention relates to the technical field of drug detection equipment, in particular to a drug detection recorder which comprises a machine body and a sampler mounted at the top of the machine body, the sampler comprises a mounting plate and an annular groove, a first protective ring is embedded in the annular groove, and two symmetrical locking assemblies are arranged on the mounting plate on the outer side of the annular groove. The locking assembly is matched with an arc-shaped groove in the first protection ring to lock and fix the first protection ring, an adjusting plate matched with a sliding groove in the inner wall of the first protection ring is arranged on the first protection ring, a plurality of through holes are evenly formed in the adjusting plate, and electric comb scissors and a second protection ring are installed on the inner wall, close to the installation plate, of the adjusting plate. The top end of the second protection ring is connected with the inner wall of the adjusting plate, the second protection ring sleeves the outer side of the electric comb scissors, and a sealing plate is arranged below the second protection ring, the hair of a detector can be conveniently collected, sampling and detection are integrated, and inaccurate detection results caused by sample packet changing can be prevented.

The invention discloses a pipe body constraining device used in pressure release of an air pressure explosion test for a high-pressure metal gas delivery pipe. The pipe body constraining device comprises a fixed station; the fixed station is provided with a pipe groove used for accommodating the high-pressure metal gas delivery pipe; two ends of the pipe groove are equipped with anchoring units; a plurality of sets of friction piles are arranged on the fixed station; each set of friction piles comprise two friction pile units; a fixing flexible steel rope for fixing the high-pressure metal gas delivery pipe is wound on each friction pile unit; a supporting layer is arranged below the pipe groove; a plurality of fixed piles are arranged on the supporting layer; and the tops of the fixed piles are aligned with the bottom end of the pipe groove. According to the invention, the axial movement of the high-pressure metal gas delivery pipe is restricted by the two anchoring devices; the fixing flexible steel ropes are wound on the high-pressure metal gas delivery pipe and fixed on the friction piles so as to better fix the high-pressure metal gas delivery pipe; and the plurality of fixed piles distributed below the pipe groove can avoid influence of insufficient bearing capacity of a foundation on safety.

The invention discloses a foam plastic board cutting device for foam plastic production. The foam plastic board cutting device structurally comprises a cutting table, a rectangular hole, a fixed baffle, a device shell, a main body device, a mounting fixing seat, a mounting fixing hole and a waste outlet, the main body device comprises a cutting driving structure, a cam mechanism, a sheave mechanism, a manual adjusting mechanism, a waste collecting mechanism, a waste collecting opening, a cutting blade, a movable baffle opening and a movable baffle transmission mechanism. According to the foamplastic board cutting device for foam plastic production, the cutting driving structure, the cam mechanism, the sheave mechanism, the manual adjusting mechanism, the waste collecting mechanism and themovable baffle transmission mechanism are mounted in the main body device, thus rising and falling of the baffles can be achieved, waste generated in cutting is subjected to blocking collection and unified treatment, the satiation that the waste splashes around and falls to affect the machining environment of a workshop is prevented, and the workers are protected.

The invention discloses an experimental device for a flow field display. An air inlet and an air outlet are arranged at two ends of a pipeline respectively; a trace gas generating device is arranged in the pipeline and is close to the air inlet; an axial-flow fan is arranged in the pipeline and is close to the air outlet; an observation section is arranged on the pipeline with the trace gas generating device and the axial-flow fan; a model control device is arranged in the observation section; a laser sheet cutting flow field device and an image data acquisition control device are arranged above the observation section; a steady flow tube bundle is arranged in the pipeline between the trace gas generating device and the observation section; a computer is connected with the model control device, the image data acquisition control device and the axial-flow fan through data transmission lines; and a fan frequency conversion control device is connected between the computer and the axial-flow fan. The experimental device is simple and convenient in control, acquires reliable experimental data and is used for qualitative experimental research for a flow field.