88results about How to "Realize safety hazard" patented technology

The invention relates to a risk assessment method suitable for an industrial control system. According to the method, modeling is performed on a target network by using a hierarchical modeling method based on the security attribute, and modeling is performed on the capacity of an attacker in the attack process by using an attack mode knowledge base; then a hierarchical attack graph is constructed according to the security model of the target network and the attacker, and the attack graph is converted into an attack tree; and then a hierarchical risk evaluation index system is constructed by using a hierarchical index analysis method, and comprehensive judgment is performed by using a layer-by-layer weighing method so that the risk assessment result of the industrial control system can be obtained. The system or equipment does not need to be offline in the analysis method, and the method is a risk assessment and management tool based on combination of qualitative and quantitative analysis of the model so that the security hidden trouble in the industrial control system can be discovered, and the security assessment level of the industrial control system can be enhanced.

The invention discloses a gel type ionic liquid / polymer electrolyte for a lithium ion battery and a preparation method thereof, and relates to a gel type ionic liquid / polymer electrolyte and a preparation method thereof. The invention solves the problem of short cycling time of the prior imidazole ionic liquid and electrode material. The electrolyte is prepared from macromolecular polymers, the imidazole ionic liquid and lithium salt. The method comprises: firstly, dissolving the macromolecular polymers into an organic solvent; secondly, adding the imidazole ionic liquid into a mixture, and stirring the mixture until the mixture is uniform; thirdly, adding the lithium salt into the mixture and obtaining a gel liquid; and fourthly, pouring the gel liquid into a die and performing vacuum drying and demolding. The electrolyte has good compatibility with a cathode of lithium titanate; the lithium ion battery prepared by the electrolyte has good safety and stable cycling performance under the condition of different multiplying factors, so as to have long cycling time; and the method has the advantages of simple technique, convenient operation and low cost.

The invention relates to a steel structure positioning and conveying construction frame comprising a supporting bottom plate and a lifting device. The lifting device is mounted at the top of the supporting bottom plate and comprises a lifting adjustment mechanism, a limiting mechanism, a fixing bottom plate, a locking mechanism, side fixing branch chains and position clamping mechanisms; and the locking mechanism comprises a locking sliding plate, a locking pushing rod, a locking supporting frame, a locking hydraulic cylinder, a locking connecting plate, idler wheel frames, supporting idler wheels, locking clamping frames and clamping frame adjustment rods. According to the steel structure positioning and conveying construction frame, the problems that during conveying of existing I-shapedsteel, when the I-shaped steel is conveyed to the mounting position, the angle of the I-shaped steel cannot be adjusted, the I-shaped steel cannot be fixed in all directions during conveying of the I-shaped steel, security hidden dangers exist during conveying of the I-shaped steel, and the position of the I-shaped steel needs to be adjusted manually when the I-shaped steel is conveyed to the mounting position can be solved; and the functions that the I-shaped steel can be fixed in all directions and the I-shaped steel is conveyed to the proper position can be achieved.

The invention belongs to the technical field of plant active ingredient extraction, and provides a method for separating and purifying polysaccharides of dendrobium officinale by aqueous two-phase extraction in order to solve the problem of using an organic solvent having a safety hazard as an extractant to purify proteins mixed in the polysaccharides in extraction of the polysaccharides from thedendrobium officinale. Stalks of the dendrobium officinale are dried and pulverized; powder of the dendrobium officinale is dissolved in active water according to a ratio of material to liquid 1: 50,and a solution is treated twice by ultrasonic waves; leaching liquors of two-time ultrasound are combined; the leaching liquors are precipitated with ethanol; and obtained precipitation is heated anddissolved by ethanol with the concentration 80%, and the proteins mixed in crude polysaccharides are removed with a PEG / ammonium sulfate mixed solution. Usage of toxic chloroform is avoided to purifythe crude polysaccharides, and the purity reaches 90-95%. The extraction rate is 177-187% of the extraction rate of a conventional hot water extraction method and an ultrasonic extraction method. Thepolysaccharides obtained by extraction has obvious capability to remove DPPH free radicals and hydroxyl radicals, and has significant antioxidant capacity. The method provides reference for preparation methods of other plant polysaccharides.

The invention discloses a fully-decoupled electronic hydraulic braking system and a corresponding vehicle. The fully-decoupled electronic hydraulic braking system includes a electronic control unit, a motor, a braking pedal displacement sensor, a braking pedal, a secondary main cylinder, a pedal simulator, a decoupling cylinder, a main cylinder, a wheel cylinder, and a liquid storage device; a pipeline between the decoupling cylinder and the liquid storage device is provided with a normally closed solenoid valve of the decoupling cylinder; the main cylinder can be decoupled with the secondary main cylinder through the decoupling cylinder and is driven by the motor or is coupled with the secondary main cylinder and is driven by the secondary main cylinder. The fully-decoupled electronic hydraulic braking system can achieve active control and adjustment of hydraulic pressure without a high pressure energy accumulator, a pump, a hydraulic pipeline, and a solenoid valve, so the fully-decoupled electronic hydraulic braking system has no the problem of potential safety hazard of the high pressure energy accumulator and a disabled solenoid valve; the structure of the fully-decoupled electronic hydraulic braking system is simple, the main cylinder is not needed to be changed, and then the cost is reduced; and failure protection of the braking system can be achieved through interaction of the decoupling cylinder and the normally closed solenoid valve.

The invention provides an aluminum bar low position bar feeding device applied to the technical field of aluminum profile production and processing. The bar placing surface (10) of a bar placing frameof the bar placing frame (1) of the aluminum bar low position bar feeding device is arranged of an inclined structure, a material stirring disc movably mounted on the side face of the bar placing frame (1) is connected with a bar overturning and supporting oil cylinder (3), and the bar overturning and supporting oil cylinder (3) is mounted on the side face of the bar placing frame (1); the bar overturning and supporting oil cylinder (3) is connected with a control part (4), and a lifting frame (5) is arranged at the end portion of one end of the bar placing frame (1); a bar feeding oil cylinder (6) is mounted on the lifting frame (5), and a bar input idler wheel (8) is arranged on the upper part of a feeding machine frame (7); and a bar supporting swing arm (9) is connected with the bar feeding oil cylinder (6). The aluminum bar low position bar feeding device has a simple structure, and a long aluminum bar can be conveniently, reliably and automatically transported from the bar placing frame into a heating furnace, low position bar feeding can be realized, so that the lifting and lowering height of the long aluminum bar is lowered, and the safety hazard of the heating operation of the long aluminum bar is eliminated.

A micro module data center room channel environment intelligent monitoring system integrates a DC12V sensor working power supply, a smoke alarm sensor, a water logging alarm sensor, an intelligent temperature and humidity transmitter, a door access controller, and a skylight controller. The system can monitor the temperature, humidity, smoke alarm status, water logging alarm status, skylight status and end door status in a cold channel in real time. Local fire alarm linkage and security linkage control is realized. The alarm response speed of a micro module data center is improved. The security risk in a channel is reduced. A main control module adopts an ear-hung installation module of standard 1U specification, and is easy to install. A DI port adopts an RJ-45 interface and a standard 568B port line sequence. Wiring ports are unified. Wiring is simplified, and construction is facilitated. The number of front-end acquisition and control modules of the micro module data center channel monitoring system is reduced. The cost of the micro module data center monitoring equipment is reduced.

The invention relates to a robot for automatically removing concrete pouring protective panels for pile foundations of high-rise buildings, which comprises a bottom plate, a walking device is installed on the lower end of the bottom plate, a reciprocating excavation device is installed on the front side of the upper end of the bottom plate, and an auxiliary device is installed on the bottom plate. The present invention can solve the problem of manual use of an electric chisel to separate the protective plate from the solidified concrete in the removal process of the existing pile foundation concrete pouring protective plate. Manual assistance is needed to remove the protective plate at a higher position with the help of existing climbing tools. The concrete particles splashed during the manual use of electric chisels are likely to hurt the staff. Removing the protective plate with the help of climbing tools poses a safety hazard , The manual removal of the pile foundation concrete pouring protective plate is difficult to operate and the work efficiency is low, and the function of automatic removal of the pile foundation concrete pouring protective plate can be realized.

The invention relates to a special wall cleaning robot for cement fiberboard, a building decoration material, which includes a lifting platform, a bottom plate, a filling device, a leveling device and a brushing device. A leveling device is installed, and a brushing device is installed at the rear end of the bottom plate. The number of filling devices is three, and the three filling devices are evenly installed at the front end of the bottom plate. Each filling device includes a placing frame, a fixing plate, a pushing cylinder, a sliding plate, and a dividing frame , fixed frame, adjusting cylinder, electric slide table, lifting cylinder, lifting frame, traction electric push rod, sliding frame and spray gun. The invention can solve the problems of high labor intensity, high labor cost, potential safety hazards, complicated operation, uneven filling and low work efficiency existing in the existing cement fiberboard wall surface cleaning technology, and can realize cleaning of the cement limit board wall surface. Automatic cleaning function.

The invention relates to automatic treatment equipment for a bridge construction pile foundation steel bar for a high-speed railway track. The automatic treatment equipment comprises a bottom plate; awalking device is installed at the lower end of the bottom plate; a collection tank is installed on the bottom plate; a collection device is installed at the front end of the bottom plate; and a cutting and polishing device is installed at the lower end of the collection device. The automatic treatment equipment provided by the invention can solve the problems that redundant pile foundation steelbars need to be manually cut in the pile foundation steel bar treatment process, manual assistance is needed in the pile foundation steel bar cutting process, the top ends of the pile foundation steel bars after cutting need to be manually polished, the pile foundation steel bars after cutting need to be manually collected, the labor intensity of manually cutting the pile foundation steel bars islarge, and particles in the pile foundation steel bar cutting process is liable to cause damage to a worker, so that safety hidden dangers exist, the cutting technology and the polishing technology cannot be performed at the same time, the time is wasted, the operation of manually conveying the pile foundation steel bars is complex, the labor intensity is large, the working efficiency is low andthe like at an existing building site and can realize the function of automatic treatment of the pile foundation steel bars.

The invention relates to a special automatic assembly and disassembly machine for sewage inspection manhole cover of drainage pipeline system, which includes a bottom plate, two moving lifting mechanisms are symmetrically installed on the left and right sides of the bottom plate, and the upper ends of the two moving lifting mechanisms are installed on a horizontal plate, and the horizontal plate The lower end of the telescopic hydraulic cylinder is installed on the ring mounting plate, the auxiliary clamping mechanism is installed on the ring mounting plate, and the rotation fixing mechanism is installed on the lower end of the ring mounting plate. The present invention can solve the problems existing in the assembly, disassembly and cleaning process of the existing sewage inspection manhole cover. The installation and disassembly of the sewage manhole cover by the lifting equipment is unstable, and the sewage manhole cover is easy to shake during the assembly and disassembly process, which has potential safety hazards, labor intensity, low work efficiency and other problems. The function of automatic assembly and disassembly of the sewage inspection manhole cover can be realized.

The invention relates to a safety protecting and hoisting device of a safety valve calibration console, in particular to a protecting device for protecting workers during safety valve off-line calibration and a hoisting device for lifting and positioning a safety valve. The safety protecting and hoisting device comprises a clamping table, a protective wall, a hoisting mechanism and a folding baffle mechanism, wherein the protective wall is arranged between the clamping table and the hoisting mechanism, a rolling wheel guide rail is arranged in the protective wall, and the folding baffle mechanism is installed in the rolling wheel guide rail in a sliding mode. The safety protecting and hoisting device is small in occupied space, convenient to use, comprehensive in function, attractive in appearance and practical, potential safety hazard produced during the safety valve calibration is avoided, meanwhile the protective wall can further play certain sound insulation effect and enables carrying and unloading of the safety valve not to be difficult, the labor intensity of the workers is reduced, and the working efficiency is improved.

The invention relates to an automatic processing and recovering robot for waste aluminium profiles produced during aluminium alloy machining. The robot comprises a bottom plate; and a limiting deviceand a smashing device are sequentially mounted on the bottom plate from front to back. By the aid of the robot, the problems that the processing and machining quantity of the waste aluminium profilesis required to be controlled manually during existing manual machining and processing of the waste aluminium profiles, time consumed for manual control on processing and machining is long, the labor force is wasted, the waste aluminium profiles are required to be machined by the aid of existing hammering tools manually, no corresponding fixing measures are provided for hammering machining of the waste aluminium profiles, the waste aluminium profiles are splashed and hurt workers easily during hammering, potential safety hazards exist, the waste aluminium profiles in different lengths are required to be manually cut into the unified sizes, repeated smashing machining is required for manual smashing of the waste aluminium profiles by the aid of existing equipment, the stability is poor, thelabor intensity is high and the working efficiency is low during manual machining and processing of the waste aluminium profiles and the like can be solved, and the function of mechanical processing of the waste aluminium profiles can be realized.

The invention relates to an automatic traditional Chinese medicine decoction piece taking and storing cabinet. The automatic traditional Chinese medicine decoction piece taking and storing cabinet comprises a cabinet body, brackets, storage devices and a lifting translating device; the brackets are uniformly mounted at the lower end of the cabinet body; the storage devices are uniformly arranged in the cabinet body and are symmetrically mounted on the left side and the right side in the cabinet body; and the lifting translating device is arranged in the middle of the cabinet body. According tothe automatic traditional Chinese medicine decoction piece taking and storing cabinet, the difficult problems that a person needs to stand at a high place to take the traditional Chinese medicine decoction pieces manually because the traditional Chinese medicine decoction pieces are often stored at a high position when the existing traditional Chinese medicine decoction pieces are stored, the existing traditional Chinese medicine decoction pieces are inconvenient to take, a potential safety hazard exists, the existing medicinal material storage cabinet is poor in storage effect, hidden dangers, such as mildew, worms and mice, are easily caused to the medicinal materials, the medicinal material waste is great, the body health of a patient is affected in a serious case, the medicinal material taking is troublesome, complex in operation, poor in storage effect and the like are solved; the functions of automatically storing and taking the traditional Chinese medicine decoction pieces canbe realized; and the automatic traditional Chinese medicine decoction piece taking and storing cabinet has the advantages of easiness in taking, convenience in operation, good storage effect and the like.

The invention relates to a grabbing and conveying robot for a road retaining wall. The robot comprises a self-stabilization walking platform, the self-stabilization walking platform has the good damping performance and the good stabilization performance, vertical shaking or left-and-right shaking phenomena appearing in the masonry carrying process are avoided, and therefore the robot is suitable for being work in uneven or muddy construction sites. A hydraulic grabbing device is arranged on the right side of the upper end face of the self-stabilization walking platform and can achieve the automatic hydraulic grabbing function of the masonry, manual grabbing and putting are not needed, a limiting conveying device is mounted in the middle of the upper rend of the self-stabilization walking platform, the limiting conveying device can achieve stable limiting conveying functions of the masonry, left-and-right limiting of the whole masonry conveying process is achieved, and the rolling hidden danger existing in the masonry conveying process can be removed. The automatic grabbing and conveying function of the masonry can be achieved, the vertical shaking or left-and-right shaking phenomena appearing in the masonry carrying process are avoided, and stable performance is good.

The invention relates to an automatic hydraulic grabbing machine for building rock-soil mortar stones. The automatic hydraulic grabbing machine comprises a self-stabilizing travelling platform which has good vibration reducing performance and stability performance, and eliminates an up-down shaking phenomenon or a left-right waggling phenomenon in a mortar stone transportation process, so that the automatic hydraulic grabbing machine is suitable for working in an uneven or muddy construction site; a hydraulic grabbing device is mounted at the right side of the upper end surface of the self-stabilizing travelling platform; and the hydraulic grabbing device can realize a hydraulic automatic grabbing function on mortar stones without manual grabbing and placing, so that grabbing speed is high and grabbing efficiency is high. The self-stabilizing travelling platform comprises a mounting platform; two transmission branch chains are symmetrically mounted at the left side and the right side of the lower end surface of the mounting platform; and two travelling branch chains are symmetrically welded on the front side and the rear side of each transmission branch chain. The automatic hydraulic grabbing machine can realize the automatic grabbing function of mortar stones, eliminates the up-down shaking phenomenon or the left-right waggling phenomenon in the mortar stone transportation process, and is good in stability performance.

The invention relates to the related field of LED screens, and discloses a self-cleaning windproof self-falling type LED advertising board device which comprises a main box, a cleaning lead screw cavity with a forward opening is formed in the main box, a torsion spring cavity is formed in the right side of the cleaning lead screw cavity, and an auxiliary conveying belt cavity extending downwards is formed in the left side of the cleaning lead screw cavity. A motion switching cavity located on lower side of cleaning lead screw cavity is formed in right side of auxiliary conveying belt cavity, and a steering bevel gear cavity is formed in right side of motion switching cavity. The outdoor wind speed is monitored through the wind wheel, and the lifting effect of the lifting lead screw is achieved, so that automatic descending of the LED advertising board in strong wind weather is achieved. And thus the potential safety hazard caused by the LED advertising board in strong wind weather is reduced. After the wind stops, the device rises automatically to ensure normal use. Moreover, the cleaning sponge is driven by the cleaning lead screw in the device to reciprocate on the LED display screen, self-cleaning of the LED display screen is achieved, and potential safety hazards brought by manual cleaning are avoided.

The invention provides an escape door lock which comprises a lock shell, a shell cover, a lock head outlet, a lock head, a lock head groove, an electromagnet, a touch switch, a lock machine, a shifting block, a suction plate return spring, a shifting block return spring and a lock head return spring, wherein the lock head comprises a lock head rod and a pushing block; the lock machine comprises a pushing arm and an electromagnet suction plate; the shifting block comprises a trough body and a shifting plate; the touch switch is arranged corresponding to the pushing block, the touch switch is connected with the electromagnet, and the pushing arm is hinged with the inner wall of the lock shell; a shifting notch is formed on the lock shell, and the trough body is arranged in the shifting notch; the suction plate return spring is connected between the lock shell and the electromagnet suction plate; the shifting block return spring is connected between the lock shell and the shifting plate; the lock head return spring is sleeved on the lock head rod and is propped between the lock shell and the pushing block; and the electromagnet suction plate is arranged corresponding to the shifting plate, the electromagnet suction plate is arranged corresponding to the electromagnet, and the pushing arm is pushed on the pushing block. The door lock has the advantages of convenient use, firm locking, safety and reliability and is convenient for opening a door.

The invention discloses a smoke-free type vertical coal-saving machine special for an industrial boiler. The smoke-free type vertical coal-saving machine comprises a machine base, a fixing device is mounted above the machine base, a water storage tank is mounted on the top of the fixing device, a hot water pipe is arranged at one end of the water storage tank, a water tank cover is arranged above the water storage tank, a water inlet pipe is arranged on the water tank cover, a water storage tank and a water collection tank are symmetrically arranged at the position, on the two sides of the fixing device, of the machine base, the outer side of the fixing device is wound by a metal guide pipe, the two ends of the metal guide pipe are connected with the water collection tank and the water storage tank, and a smoke purification device is arranged at the end, close to the water storage tank, of the machine base. Efficient utilization of smoke heat and smoke automatic filtering purification functions are achieved, and the beneficial effects that a heat preservation layer is arranged, heat losses are small, a heat insulation layer is arranged, smoke heat losses are small, the smoke heat utilization rate is high, potential safety hazards do not exist, slag-free particle filtering is carried out on a smoke inlet, and therefore a flue cannot be blocked; coal is completely combusted, the resource utilization rate is high, and the smoke is automatically purified and exhausted to the air are achieved.

The invention discloses a high-voltage cable oscillatory wave partial discharge test system which comprises a high-voltage DC power supply, a high-voltage switch, a high-voltage reactor, a capacitivevoltage divider, a data acquisition analysis unit and an partial discharge coupling unit. The bottom of the high-voltage reactor is provided with a base. The top of the high-voltage reactor is provided with a clamping seat. The base includes a substrate base fixed to the high-voltage reactor. Two symmetrically arranged annular fixing seats are arranged below the substrate base. Both ends of each annular fixing seat are inclined structures. A stopping plate is arranged between the annular fixing seats. Positioning holes are arranged on both end faces of the stopping plate. A telescopic rod is arranged between the stopping plate and the substrate base. A spring sleeves the telescopic rod. The high-voltage cable oscillatory wave partial discharge test system is able to reduce potential safetyhazards and improve installation efficiency.

The invention relates to an intelligent harvesting device for agricultural vegetable aquaculture. The intelligent harvesting device comprises a base plate, a top plate, a supporting air cylinder, a sorting device, an auxiliary device, a shearing device and a placement box; the supporting air cylinder is installed on the base plate, the top plate is installed at the top end of the supporting air cylinder, the sorting device is arranged on the top plate, the auxiliary device and the shearing device are installed at the lower end of the sorting device, the placement box is installed at the left end of the auxiliary device, the auxiliary device, the shearing device and the placement box are all installed on the base plate, and the sorting device comprises an electric sliding block, an installing plate, a lifting air cylinder, a working plate, a sorting branched chain and a guiding sliding rail. The problems that in the existing aquaculture vegetable harvesting process, the manual dependence degree is high, the labor cost is high, the working efficiency is low, and potential safety hazards exist can be solved, the functions of automatically harvesting and cutting aquaculture vegetable can be achieved, and the intelligent harvesting device has the advantages of being high in automatic degree, low in labor cost and high in working efficiency, causing no potential safety hazards and the like.

The invention relates to an automatic mounting and dismounting robot for an LED lamp tube grating-shaped protective cover. The automatic mounting and dismounting robot comprises a base plate. Four universal wheels are symmetrically installed at the lower end of the base plate. A mounting and dismounting mechanism is installed at the front end of the base plate and can mount and dismount the grating-shaped protective cover. An automatic mounting and dismounting technology of the LED lamp tube grating-shaped protective cover can be completed through the mounting and dismounting mechanism. The automatic mounting and dismounting robot can solve the problems that tools like a ladder are required manually for climbing operations in the sweeping process of an LED lamp tube with the grating-shaped protective cover, the tools are needed manually to remove the grating-shaped protective cover, the removed grating-shaped protective cover needs to be manually mounted into a wall, operation is complicated, potential risks exist when the tools like the ladder are required manually for climbing operations, the labor intensity is large and working efficiency is low when the grating-shaped protective cover is mounted and dismounted manually; and the automatic mounting and dismounting function of the LED lamp tube grating-shaped protective cover can be achieved.

The invention relates to automatic anchor rod mounting equipment special for tunnel and bridge construction. The automatic anchor rod mounting equipment special for tunnel and bridge construction comprises a base plate. Two adjustment devices are symmetrically mounted on the base plate. An adjustment column is mounted between the two adjustment devices. A conversion device is mounted on the adjustment column. A drilling device is mounted at the right end of the conversion device. A feeding device is mounted at the left end of the conversion device. A clamping device is mounted on the feeding device. The adjustment devices, the adjustment column, the conversion device, the drilling device, the feeding device and the clamping device are used in cooperation to complete the automatic anchor rod mounting process during tunnel and bridge construction. By adoption of the automatic anchor rod mounting equipment special for tunnel and bridge construction, the problems that in the prior art, when large mechanical equipment is used in the anchor rod reinforcing process during tunnel and bridge construction, drilling in a narrow working environment is troublesome, and consumption is large; and manual drilling can cause potential safety hazards and is high in labor intensity and low in working efficiency, anchor rods need to be mounted in drilled holes manually after drilling is ended, and operation is complex can be solved; and the automatic anchor rod mounting function can be achieved in the tunnel and bridge construction process.

The invention relates to a mounting device for a prefabricated building prefabricated component. The mounting device comprises an assembly mounting groove and a supporting bearing plate, wherein the supporting bearing plate is movably arranged in the assembly mounting groove, a plurality of rotary supporting columns are connected to one end of the supporting bearing plate, and rotating rods are fixedly inserted into the rotary supporting columns. The mounting device is used for clamping, fixing and lifting the prefabricated building prefabricated component in the mounting process, specifically, in the mounting process of the prefabricated building prefabricated component, the prefabricated building prefabricated component is clamped and fixed from the bottom through the device, then the prefabricated building prefabricated component is lifted to the corresponding mounting position through the equipment, and finally the device can drive the prefabricated building prefabricated componentto rotate, so that the prefabricated building component is in a vertical state; and meanwhile, the device can also achieve a rapid positioning effect, so that the working efficiency can be effectively improved.

The invention relates to a round steel pipe rapid recovery device, which comprises a bottom plate, a lifting adjustment device is installed on the bottom plate, and a beating recovery device is installed on the upper end of the lifting adjustment device. The present invention can solve the problems existing in the restoration process of the existing deformed circular steel pipes that the steel pipes need to be manually fixed, and the baked steel pipes need to be manually restored with the help of tools, and the fixing of steel pipes of different specifications requires manual adjustment of the clamp position, the operation Complicated, artificial restoration of high-temperature baked steel pipes is easy to be scalded, and there are potential safety hazards. Manual restoration of steel pipes with tools is limited and the special structure of steel pipes. Manual restoration of steel pipes is cumbersome, labor-intensive and low-efficiency. Realize the function of quick recovery of round steel pipe.

The invention provides a double-door escape door lock which comprises a lock groove, electromagnet, a touch switch, a strip-shaped door lever and a door lever mounting body, wherein one end of the strip-shaped door lever is articulated with the door lever mounting body, and the other end thereof is provided with an electromagnet absorbing plate; the electromagnet and the touch switch are respectively installed in the lock groove; an absorbing end of the electromagnet is arranged correspondingly to one side of the electromagnet absorbing plate; the touch switch is arranged correspondingly to one side of the electromagnet absorbing plate; the touch switch is connected in an electromagnet power supply circuit; the lock groove is internally provided with a stress protection clip which is provided with a concave-arc-shaped inner side wall; and the concave-arc-shaped inner side wall is arranged correspondingly to the strip-shaped door lever. The door lock has the advantages of simple structure, ingenious design, convenient use, firm locking, convenient and fast opening of a door, safety and reliability.

The invention discloses a dispatching display terminal capable of displaying dead zone information, relating to equipment for detecting vehicle travelling dead zones through a camera. In the terminal, four groups I / O (input / output) ports of a micro processor are respectively connected with a memory, a display driver, a keyboard, a buzzer and a URAT (universal asynchronous receiver / transmitter) serial interface module; and the display driver provides a signal to a display device. The camera arranged on the front face of a vehicle and / or the side face of the vehicle is connected with the display driver by a video input module, and is arranged on corresponding brackets and driven to deflect by a motor; and a fifth group of I / O port of the micro processor is respectively connected with a acceleration sensor and the driver of the motor. The micro processor receives vehicle travelling state information provided by the acceleration sensor and controls the motor on the corresponding bracket to rotate so as to change the detection angle of the corresponding camera; and the micro processor controls the display driver to acquire dead video information detected by the camera through the video input module and sends the dead zone video information to the display device for displaying, thereby exposing potential safety hazards in advance.

The invention relates to a low-grade coal gas flow injection dense-phase quick dry distillation upgrading method and system. The system comprises a dehydration treatment system, a dry distillation upgrading system and a gas supply system for providing a heat source for the dehydration treatment system and dry distillation upgrading system. The method combines the low-grade coal dehydration treatment technique and the dry distillation upgrading technique to coproduce semicoke, tar and coal gas. The method has the characteristics of simple system technique, low equipment investment, small occupied area, no emission of dust and other pollutants in the whole process, environment friendliness, energy saving and high efficiency, is convenient to operate, implements clean conversion of low-grade coal, and satisfies the requirements for continuous large-scale production.

The invention relates to installation and maintenance equipment for an LED bulb lamp. The installation and maintenance equipment comprises a movement adjustment device, a grabbing device, two auxiliary devices, a limit device and a wiping device, wherein the grabbing device is installed at the middle part of the front end of the movement adjustment device; the limit device is installed at the right side of the front end of the movement adjustment device; the two auxiliary devices are installed at the middle part of the movement adjustment device, and symmetrically arranged; and the wiping device is installed at the rear end of the movement adjustment device. The installation and maintenance equipment disclosed by the invention is capable of solving the problems that a bulb needs to be manually installed in the existing installation and maintenance processes for the LED bulb lamp, during bulb installation, personnel carry a ladder to a specified position, then take the LED bulb lamp andclimb up to install, and the ladder slips down due to smooth floor to cause potential safety hazards, and during maintenance for the LED bulb lamp, the personnel climb up by virtue of the ladder andthen remove dust, the dust falling off is liable to get into eyes to cause potential safety hazards, and the like; and the installation and maintenance equipment is capable of realizing the functionsof automatic stably-clamping installation, later maintenance and multidirectional adjustment for the LED bulb lamp.

The invention relates to an automatic cutting equipment for steel bar molds for building concrete herringbone-shaped steel structures, which includes a lifting plate, a mobile adjustment device is installed on the lower end of the lifting plate, a cutting device is installed on the lower end of the mobile adjustment device, and symmetrically installed on the lower end of the mobile adjustment device. Two collection devices. The present invention can solve the problems existing in the cutting process of existing herringbone-shaped building structure steel bar molds, which require manual use of cutting tools to cut steel bars, cutting steel bars at different positions requires manual handling and cutting equipment, and manual cutting of steel bars requires the use of existing ladders, etc. When the tool is used for climbing operations, it is necessary to manually collect the steel bars scattered on the ground after cutting. Manually moving the cutting equipment is labor-intensive, and the cutting operation with the help of climbing equipment is unstable and has potential safety hazards. Manually collecting the cut steel bars is complex and labor-intensive. It can realize the function of automatic cutting of herringbone building structure steel bar molds to solve the problems of high strength and low work efficiency.