1114 results about "Personal security" patented technology

The invention discloses a grinding device for a steel pipe, comprising: a support table for supporting; the limiting part is horizontally connected to the supporting table in a sliding mode and used for limiting the steel pipe in the horizontal direction; the grinding part is horizontally and slidably connected to the supporting table and used for grinding the inner wall of the steel pipe; the lead screw driving part is arranged on the supporting table and used for controlling the limiting part and the grinding part to synchronously move in the direction close to each other or away from each other. Mechanical automatic grinding machining of the inner wall of the steel pipe can be achieved, the burden of workers is reduced, the production efficiency is improved, meanwhile, the risk that the workers inhale too much dust can be reduced, and the personal safety of the workers is guaranteed.

A method for an access point (AP) to advertise that it supports Wi-Fi Easy Connect provisioning by broadcasting to devices, a frame that specifies the provisioning in question. The method includes, by the AP, receiving from a device, a frame indicating the device wishes to connect to the AP, and sending, by the AP, to the device a frame indicating the AP allows the device to connect to the AP. Subsequently, the AP and device follow the Wi-Fi Easy Connect protocol. Also provided is a method for an AP to advertise it supports a Wi-Fi Protect Setup (WPS) provisioning protocol and the Wi-Fi Easy Connect provisioning protocol to connect a device to the AP. The method includes, by the AP, broadcasting an AP frame structured to specify that the AP supports a Wi-Fi Protect Setup (WPS) provisioning protocol and a Wi-Fi Easy Connect provisioning protocol to connect a device to the AP; receiving, from a device that received the first AP frame, one of: a device frame structured to indicate that the device selects the WPS provisioning protocol to connect to the AP; and a device frame structured to indicate that the device selects the Wi-Fi Easy Connect provisioning protocol to connect to the AP. Further provided is an access point configured to perform the methods mentioned herein.

The invention discloses a gastric retention capsule robot and a gastric retention capsule device, and relates to the technical field of medical instruments, the gastric retention capsule robot comprises a capsule shell, a robot body, an unfolding arm, a driving mechanism and a restoring mechanism; the robot body is arranged in the capsule shell, and a carrying module used for carrying the functional module is arranged on the robot body; the unfolding arm is movably arranged on the robot body; the driving mechanism is arranged on the robot body, and after the capsule shell is dissolved, the driving mechanism can drive the unfolding arm to unfold towards the outside of the robot body so as to limit discharging of the robot body; the restoring mechanism is arranged on the robot body and can fold the unfolding arm to be attached to the robot body so that the robot body can be discharged. The device can be detained in the stomach and can be discharged from the gastral cavity through active folding, the timeliness is good, the risks of gastrointestinal tract blockage, mechanical injury and the like existing in a passive discharging mode are avoided, and the personal safety of a patient is guaranteed.

The application discloses an inertial centrifugal force control safe belt tightening device, relates to the technical field of tightener, and comprises a handle assembly, a base assembly and a long belt, wherein the handle assembly comprises a handle and a ratchet wheel, the base assembly comprises a base, the handle and the base are pivotally connected through a volute spring shaft, one end of the volute spring shaft is provided with a centrifugal brake assembly, and the centrifugal brake assembly comprises a brake disc, a brake cover, a brake pawl and a return compression spring. The application has the advantages of reasonable design, brake function, prevention of long belt swinging and injury of operators, personal safety of operators, handle limiting function, obvious improvement of smoothness and service life of the tightening device and excellent practicability.

The utility model discloses a mechanical lock interlocking system for a grounding switch of a gas insulated switchgear, which belongs to the technical field of insulated switches and comprises a circuit breaker operating mechanism and a three-position operating mechanism which are mounted in a mechanism compartment. The grounding interlocking device is arranged between the low-voltage compartment and the high-voltage compartment in a penetrating manner below the mechanism compartment; wherein the three-station operating mechanism, the circuit breaker operating mechanism and the grounding interlocking device are sequentially distributed from top to bottom, and every two of the three-station operating mechanism, the circuit breaker operating mechanism and the grounding interlocking device are mechanically linked; the circuit breaker operating mechanism and the three-station operating mechanism are respectively connected with the circuit breaker and the three-station isolating switch in the inflatable compartment; a rear lower door plate is installed behind the high-voltage compartment cabinet, and the grounding interlocking device is connected with the rear lower door plate. Operation and maintenance personnel must operate in sequence when wanting to open the rear lower door plate of the high-voltage compartment; by adopting the mechanical interlocking, programmed step operation of an operator can be ensured, the reliability is higher, and the personal safety of the operation and maintenance personnel can be further ensured.

The invention relates to the related technical field of carbon dioxide detection, in particular to a carbon dioxide leakage detection device which comprises a gas chamber, an infrared light source, an optical filter and a detector. A first-stage connecting lug plate and a second-stage connecting lug plate are integrally formed at ports of the front shell and the rear shell respectively, the first-stage connecting lug plate and the second-stage connecting lug plate are positioned and connected through a first-stage bolt and a first-stage nut, and a mounting bracket is fixedly mounted on the back surface of the gas chamber; external air is pumped into the gas chamber through the air pump, then infrared light is emitted through the infrared light source, carbon dioxide in the gas can absorb infrared light of a specific wave band in the infrared light, then the infrared light irradiates the detection end of the detector through the light filter, the detector detects and analyzes the infrared light, and the infrared light is detected and analyzed through the infrared light source. Therefore, the concentration of carbon dioxide in the air is monitored in real time, and personal safety is effectively guaranteed.

The utility model discloses an electronic expansion valve welding cooling protection tool which comprises a tool groove body which is supported by a base and provided with an upper cover plate used for opening and closing the tool groove body, and a water supply pipe and a water outlet pipe are arranged at the two ends of the bottom of the tool groove body respectively. The expansion valve fixing frame is located in the tool groove body and used for fixing the electronic expansion valve to be welded; the pipeline supporting table is used for placing a welding copper pipe; the flow equalizing plate is fixed in the tool groove body, is positioned between the water supply pipe and the electronic expansion valve, and is used for enabling water flow to flow through the lower side and the upper side of a valve body of the electronic expansion valve respectively; and the water baffle is fixed in the tool groove body, is positioned between the water outlet pipe and the electronic expansion valve, and is used for enabling the water surface in the tool groove body to just overflow the copper pipe of the electronic expansion valve. According to the electronic expansion valve welding device, the phenomenon that an existing electronic expansion valve is damaged due to overheating in the welding process can be effectively avoided, the reject ratio of welding pipeline assemblies is reduced, the welding efficiency is improved, and the personal safety of operators can be well guaranteed.

The invention discloses a drill string state real-time monitoring and analyzing method under limit drilling parameters, which comprises the following steps of: acquiring multi-source sensor data of a drill string in real time, and transmitting the acquired original multi-source sensor data to a data processing center in real time; de-noising and drift correction are carried out on the multi-source sensor data by adopting a self-adaptive filtering algorithm; the preprocessed multi-source sensor data are input into the multi-parameter fusion analysis model subjected to data equalization processing optimization, and the current drill string state is recognized; outputting a drill string state identifier by using a multi-layer neural network structure and a nonlinear activation function, and transmitting the drill string state identifier to a monitoring terminal on a drilling site in real time; and the data processing center classifies and stores the information in a distributed database. According to the invention, the working state information of the drill string under the complex working condition can be comprehensively and timely obtained, and the state of the drill string can be accurately identified. Major accidents are effectively avoided, and the personal safety of drilling operators and the safety of drilling equipment are guaranteed.

The utility model relates to the technical field of vehicle safety, and particularly discloses a vehicle falling-into-water auxiliary rescue system and a vehicle, the vehicle falling-into-water auxiliary rescue system comprises a wading detection unit, an inflation part and a controller, and the wading detection unit is arranged on a vehicle body and used for sensing current road condition information of the vehicle body and used for sensing water level information around the vehicle body; the inflation part is arranged on the vehicle body and communicates with a passenger compartment of the vehicle body. The controller is arranged on the vehicle body and electrically connected with the wading detection unit and the inflation part, the controller judges whether the vehicle body is in a wading state or a drowning state or not according to sensing information of the wading detection unit, and the controller further controls the inflation part to inflate the passenger compartment when the vehicle body is in the drowning state. According to the vehicle falling-into-water auxiliary rescue system, by arranging the wading detection unit, the accuracy of judging whether the vehicle is in the wading state or the falling-into-water state is improved. The controller is arranged to control the inflation part to inflate the passenger compartment of the vehicle body when the vehicle body falls into water, so that the personal safety of a driver and passengers is enhanced.

The utility model discloses a vehicle feed inlet cover, which relates to the technical field of vehicles, and comprises a cover body arranged on a transport tank opening, the transport tank opening is divided into an even number of feed inlets by partitions along the width direction, and a cylinder is arranged on the partition between every two adjacent feed inlets; the cover body is composed of sub-cover bodies with the number corresponding to that of the feeding ports, the two sub-cover bodies arranged on the two sides of the air cylinder are connected through a connecting strip to form a sub-cover body pair, and the connecting strip stretches across the air cylinder. Compared with the prior art, the device has the advantages that the air cylinder is used for pushing or retracting the air cylinder telescopic rod so as to drive the cover separating bodies to be opened or closed, the biological safety risk caused by the fact that people make contact with feed in the charging process is avoided, and the device is convenient to use and high in practicability. And workers do not need to climb to the top of the tank, so that the workload and the personal safety of the workers are reduced, the opening and closing speed of the feed port cover is increased, and the working efficiency is improved.

The invention discloses a freight train shunting method based on an unmanned aerial vehicle radar, and belongs to the technical field of freight train shunting. The method comprises the following steps: initiating a shunting task based on a communicator, and automatically distributing an unmanned aerial vehicle based on an initiated shunting request; unmanned aerial vehicle preparation operation: if the distributed unmanned aerial vehicle is an idle unmanned aerial vehicle, taking off from the unmanned aerial vehicle charging warehouse, starting an audible and visual alarm, vertically climbing to a preset height, and then positioning a vehicle head; otherwise, directly positioning the headstock; recognizing the tail of the vehicle and moving the vehicle to a position right above the tail of the vehicle to execute dwelling and stopping monitoring; and finally, a shunting locomotive driver executes shunting operation based on the real-time monitoring information of the unmanned aerial vehicle. The invention aims to take the unmanned aerial vehicle as an intermediate link of the freight train shunting system to replace the work of the personnel of the shunting train in the freight train shunting process, optimize the freight train shunting speed on the basis of guaranteeing the personal safety of the personnel, improve the commuting efficiency of the freight train system, and improve the freight train shunting safety. The intelligence of a traditional freight train railway network system is promoted.

The invention provides a navigation method, electronic equipment and a computer readable storage medium. And the user can travel according to the route information specified by the first planned route to carry out outdoor operation. The electronic equipment can obtain and display signal intensity information of a plurality of position points on a first planned route selected by a user, and the signal intensity information of the plurality of position points on the first planned route is used for indicating signal intensity of different position points on the first planned route. The signal intensity of different position points on the first planning route is used for the communication quality of different position points on the first planning route, and the higher the signal intensity is, the better the communication quality is. By implementing the method, a user can obtain the signal strength of the plurality of position points on the first planned route based on the signal strength information of the plurality of position points on the first planned route, and the user can know the communication condition of the first planned route in advance, plan the route and improve the user experience. Therefore, the personal safety of the user is improved when the user travels according to the route information specified by the first planned route.

The utility model provides a wave-shaped beam plate forming machining device which comprises a first machining area and a second machining area, and a supporting sliding part is arranged between the first machining area and the second machining area. A push plate moving towards the second machining area is arranged on the first machining area. Positioning columns are arranged at the two ends of the side, away from the first machining area, of the second machining area correspondingly, and the distance between the two positioning columns is smaller than the width of a steel plate used for producing the corrugated beam plate and larger than the width of the formed corrugated beam plate. The semi-finished product in the first machining area is pushed to the next machining area through the push plate, and then the corrugated beam plate can pass through the position between the two positioning columns by means of the width change of the bent semi-finished product, so that automatic feeding and discharging of the corrugated beam plate are completed. And meanwhile, hidden dangers to personal safety of workers due to the fact that hands or tools of the workers stretch into the machine in the operation process are avoided.

The utility model relates to a square timber multi-blade sawing machine and an automatic side feeding device thereof, which comprises a feeding chain, a blade separating baffle plate and an automatic side mechanism, the automatic side mechanism comprises a side pushing power assembly, a side pressing assembly and a sensing device, and the sensing device is used for detecting the position of timber. The side pushing power assembly drives the side pressing assembly to enable the timber to be automatically pulled to the side. According to the utility model, the fragmentation baffle plates are arranged, so that a worker is prevented from operating at a dangerous position, the risk of hurting people caused by timber rebound is greatly reduced, and the personal safety of the worker is guaranteed. A plurality of timbers can be stacked at the feeding and stacking position, so that the production efficiency is improved; due to the realization of automatic feeding and side-leaning functions, the manual material pushing operation of workers is reduced, and the labor intensity is effectively reduced.

The invention discloses an energy storage PCS-body cabinet, and relates to the field of energy storage PCS-body cabinets. An energy storage PCS-body cabinet comprises a bearing plate, the top of the bearing plate is fixedly connected with a box body, an inner cavity of the box body is fixedly connected with a battery rack, the top of the battery rack is fixedly connected with a battery cluster, the right side of the inner cavity of the box body is fixedly connected with an electrical bin, and the rear side of the right side of the bottom of an inner cavity of the electrical bin is fixedly connected with an energy storage EMS cabinet. The rear side of the left side of the inner cavity of the electrical bin is fixedly connected with a distribution box. According to the energy storage PCS-body cabinet, the battery clusters in the box body can be flexibly matched and meet the power requirement of (215 KW-1. 3MW), the battery racks used by the battery clusters can be flexibly fixed to the bottom and the top of the box body and fixed through bolts, the battery racks can be rapidly fixed or disassembled and assembled through the side faces, the safe escape design is achieved, the access door is designed on the end face of the box body, and the service life of the box body is prolonged. And if an emergency occurs in the electrical cabin, people can escape emergently through the access door, so that the personal safety of maintenance personnel is ensured.

The application provides a wind guide device and a ventilation system, comprising a base, a lifting rod, an angle adjusting mechanism and a wind guide plate. The base fixes the wind guide device in the air supply channel, the lifting rod is fixedly connected with the base, the angle adjusting mechanism is fixedly connected with the lifting rod, and the wind guide plate is rotationally connected with the angle adjusting mechanism. The lifting rod can adjust the height of the wind guide plate, and the angle adjusting mechanism can adjust the orientation of the wind guide plate. By adjusting the height and orientation of the wind guide plate, the wind guide plate can guide part of the air flow in the air supply channel to the working point located in the pillar construction area, and the part of the air flow will directly impact the dirty air accumulated at the working point, so as to strongly wash and dilute the dirty air. The diluted dirty air will be dispersed away from the working point under the double actions of air flow dispersion and natural diffusion, and finally flow into the air supply channel and be discharged, so that the ventilation effect at the working point is improved, the dirty air accumulation problem is solved, the occupational health and personal safety of the workers are ensured, and the safety hidden danger is eliminated.

The present application relates to the field of drilling fluid filtration, especially to a kind of oil drilling fluid cleaning filtration equipment and its use method.The technical problem is that in the process of cleaning and filtering drilling mud, hydrogen sulfide and gas drilling fluid are wrapped in oil to form bubbles, which are difficult to separate, reduce the recycling rate of gas drilling fluid, increase the cost of oil exploitation, and at the same time, since hydrogen sulfide mixes with air in gas drilling fluid to form flammable and explosive gas, combustion and explosion are easy to occur in the container, which endangers the personal safety of surrounding workers.The technical scheme is: a kind of oil drilling fluid cleaning filtration equipment, including first mounting frame and vibrating screen, etc.;vibrating screen is arranged on the first mounting frame for separating cuttings in drilling mud.The present application realizes the crushing of bubbles on the rotating crushing block by the crushing block, avoids the wrapping of part of gas by oil, ensures the complete separation of gas from oil, and guarantees the liquid-gas separation effect.

The invention provides a radiation shielding device and a neutron capture treatment system. The radiation shielding device comprises a shielding body, a base part and a driving device, the shielding body is movably arranged on the base part; the shielding body is provided with a first position and a second position, the first position is the position where the shielding body shields the beam outlet, and the second position is the position where at least part of the shielding body does not shield the beam outlet; the driving device is connected with the shielding body, and the shielding body can be switched between a first position and a second position through the driving device. According to the technical scheme, after a patient finishes irradiation and before a worker enters a treatment room to carry out a subsequent operation process, the position of the shielding body can be adjusted and controlled to shield the beam outlet, so that the patient and the worker are prevented from being radiated, activation of other equipment in the treatment room is avoided, and the treatment efficiency is improved. And the personal safety of patients and workers and the normal operation of equipment are ensured.

The utility model belongs to the stirring rake block cleaning technical field, specifically disclose a kind of manheim furnace stirring rake block cleaning tool, including connecting rod one and connecting rod two, and the both ends of connecting rod one and connecting rod two are detachably connected with spade head and double-toothed peg harrow, the other end of connecting rod one and connecting rod two is mutually hinged, and the width direction of spade head and double-toothed peg harrow is tangent to the rotation direction of connecting rod one and connecting rod two, and the hinge of connecting rod one and connecting rod two is equipped with bolt one for mutual fixation. When the existing stirring rake cleaning tool is placed after use, it will lose balance and fall to the ground, and the falling tool can easily trip the workers, posing a threat to their personal safety. The utility model is fixed by bolt one Connecting rod one and connecting rod two are folded, the spade head or double-toothed peg harrow is supported on the ground, so that the tool can be independently supported, avoiding the problem of easy sliding when the traditional tool is placed alone.

The utility model discloses a dual-optocoupler protection circuit, which comprises a chip U1, an optocoupler U2 and an optocoupler U3, and is characterized in that the FB end of the chip U1 is connected with the fourth pin of the optocoupler U2 and the fourth pin of the optocoupler U3; a pin 3 of the optocoupler U2 is connected with a pin 3 of the optocoupler U3; a pin 2 of the optocoupler U2 is connected with a pin 1 of the optocoupler U3; a pin 1 of the optocoupler U2 is connected with a resistor R121 and a resistor R98, the resistor R121 is connected with a voltage stabilizing diode ZD6, and the voltage stabilizing diode ZD6 is connected with a resistor R120; and the resistor R98 is connected with the pin 2 of the optocoupler U2 and the pin 1 of the optocoupler U3. According to the utility model, the damage of the power supply caused by failure of a single device can be met, the power supply and the personal safety of a user can be better protected, and the protection circuit can be better applied to the market due to more and more safety accidents caused by failure of a charger and higher and higher requirements on the safety of the charger at present.

A high-altitude double-grounding gas-filled cabinet gas tank structure comprises a gas tank formed by connecting a plurality of plates, the gas tank is filled with insulating gas, and the gas tank is divided into an upper gas tank, a middle gas tank and a lower gas tank along the height direction; the upper gas tank is internally provided with a first grounding system, the first grounding system is a two-station grounding switch and comprises a first guide sleeve and a first conducting rod, and one end of the first guide sleeve is provided with an insulation plugging structure, so that the first conducting rod can only move in a single direction; a second grounding system is arranged in the middle gas tank, the second grounding system is a three-station isolating switch, the three-station isolating switch comprises a second guide sleeve and a second conducting rod, and the two ends of the second guide sleeve are open, so that the second conducting rod can move in two opposite directions. Two sets of grounding systems are arranged, when one set of grounding system fails due to reasons, the other set of grounding system can still operate normally, and personal safety is guaranteed.

The utility model relates to the technical field of lighting devices, and discloses a turnover type lighting device which comprises a cleaning box, a turnover lighting device body rotating around the length direction of the cleaning box is arranged on the cleaning box, the turnover lighting device body comprises a U-shaped rotating frame, and the rotating frame comprises a transverse rod and connecting rods located at the two ends of the transverse rod. Light bars are arranged on the inner side faces, facing the connecting rods, of the transverse rods, and the free ends of the connecting rods are rotationally connected with the buckling corners of the outer side faces of the cleaning box end plates; the turnover lighting device is arranged outside the cleaning box, on one hand, damage to the light bar caused by water scouring in the cleaning process can be prevented, the situation that personal safety and equipment safety are threatened by negative effects such as short circuit is avoided, corrosion of chemical cleaning agents can be eradicated, and the service life is prolonged; and on the other hand, the external structure is convenient to maintain and does not conflict with the internal cleaning process, that is, integral maintenance of the lighting device or replacement of parts can be achieved in the cleaning process.

The application discloses a kind of low resistance low inductance high reliable electrode connecting structure for high voltage Pockels cell, belongs to Pockels cell electrode connecting technical field, solve the existing Pockels cell electrode connecting structure connection reliability problem, electric contact medium performance is not good;Including anti-drop insulating sleeve, pin, input electrode, metal hair button, shell and crystal;The top of pin is equipped with anti-drop insulating sleeve, the bottom of pin is connected with input electrode, input electrode is installed in the mounting hole of shell, the inside of shell is provided with crystal, and the outer side surface of both ends of crystal is provided with gold plating layer;Metal hair button at the bottom of input electrode is pressed on gold plating layer.In the application, pin and input electrode are inserted into position and wrapped by anti-drop insulating sleeve, input electrode is not exposed, and the personal safety hazard of high-voltage electric shock is fundamentally eliminated;Metal hair button is used instead of conductive rubber, to ensure that the contact pressure with crystal electrode is constant, and the anti-vibration and anti-impact performance is strong.

The utility model relates to the technical field of acetic acid ethanol preparation, in particular to a high-purity ethyl acetate refining device which comprises a base, a preparation box is fixed on one side of the top of the base, a heating copper plate is fixed at the bottom of the base through screws, a cover plate is mounted at the top of the preparation box, and a stirring assembly is mounted in the cover plate. And a recycling suction pipe is fixed to one side of the quantitative tank through a fixing rod, one end of the recycling suction pipe is in sealed connection with a piston rod assembly through threads, a three-way valve is installed at one end of the recycling suction pipe, and one side of the three-way valve communicates with a recycling pipe. According to the chemical material recycling device, chemical materials stored in the recycling suction pipe are squeezed into an original storage container through the recycling pipe by converting the outlet direction of the three-way valve, so that redundant chemical materials are recycled, the situation that the chemical materials are splashed when being recycled by experimenters is avoided, the personal safety of the experimenters is guaranteed, and the experiment efficiency is improved. Meanwhile, pollution and loss of chemical materials are reduced.

The utility model relates to an automatic slag salvaging device for anode pouring molten iron, which comprises a furnace surface, an electric furnace mounted on the furnace surface, a slag salvaging robot mounted on the furnace surface, a control box mounted on the bottom surface of the slag salvaging robot, a mounting base of the slag salvaging robot mounted on the surface of the control box, a fixing rod connected to the surface of the mounting base, and an operating rod connected to one end of the fixing rod. An operation head is fixedly connected to the end of the operation rod, a fixing plate is fixedly connected to the bottom face of the operation head, and slag salvaging grab buckets are hinged to the side walls of the two sides of the fixing plate respectively. And a slag box is arranged on the furnace surface. And an ash sticking barrel is arranged on the stove surface. The automatic slag salvaging device has the advantages of being reasonable in structural design, convenient and fast to operate, low in machining and manufacturing cost, safer and more reliable to operate, time-saving and labor-saving, parameters can be set according to site working condition requirements of slag salvaging, automatic slag salvaging operation is achieved, and personal safety of site workers is fully guaranteed.

The utility model relates to a balloon dilatation catheter for a dialysis vascular access, which belongs to the field of medical instruments and comprises a catheter. The expansion assembly is arranged on the outer side of the catheter and comprises an expansion balloon which is arranged on the outer side of the catheter; the plurality of medicine filling grooves are uniformly formed in the outer side of the dilatation balloon; and the protection assembly is arranged on the outer side of the guide pipe. According to the dialysis vascular access expansion device, through the arranged expansion assembly, the narrow portion of a dialysis vascular access can be expanded, and the narrow portion of the dialysis vascular access can be coated with medicine, so that cell hyperplasia of the dialysis vascular access is reduced, and the number of times of dialysis vascular access expansion needed by a patient is reduced; in this way, the personal safety of a patient can be improved, meanwhile, under the action of the protection assembly, the medicine in the medicine filling groove can be prevented from being added to the non-narrow part of the dialysis vascular access, and therefore the inhibition effect of the medicine on dialysis vascular access cells is improved.

The application relates to a PC stair hoisting positioning method and system, a storage medium and an intelligent terminal, relates to the field of PC components, and comprises the following steps: acquiring shooting image information; analyzing arc characteristic information and whole-circle characteristic information in the shooting image information; judging whether the whole-circle characteristic information exists; if the whole-circle characteristic information exists, vertically falling the PC stair until the whole-circle characteristic information does not exist; if the whole-circle characteristic information does not exist, horizontally moving the PC stair until the whole-circle characteristic information appears; and falling a preset standard falling height information when a boundary line of the shooting image information and the whole-circle characteristic information coincide. The application improves the problem that the falling process of the hoisted PC stair needs to be commanded by a construction worker, threatening the personal safety of the construction worker, and has the effects of reducing the hidden danger to the personal safety in the PC stair hoisting process and improving the safety and intelligentization of the PC stair hoisting process.

The utility model discloses an isolation negative pressure weighing device for high-activity drugs, and relates to the technical field of weighing devices, the isolation negative pressure weighing device further comprises a cover body, the top of the cover body is fixedly connected with a static pressure box, a plurality of exhaust holes are formed in the bottom of the front surface of the static pressure box in a penetrating manner, the inner side of the cover body is fixedly connected with a fixing plate, and one side of the front surface of the cover body is hinged with a door body through a hinge; through holes are formed in the two sides of the front face of the fixing plate in a penetrating mode, operating mechanisms are arranged in the through holes and comprise operating gloves, the operating gloves are located in the through holes, the outer sides of the operating gloves are fixedly sleeved with mounting rings, and the mounting rings are located on the front face of the fixing plate. A worker can stretch the hand into the cover body to operate on the outer side of the cover body, the worker is prevented from being hurt due to the fact that the worker makes contact with the high-activity medicine, and then the protection performance for the personal safety of the worker is improved conveniently.

The present application relates to a kind of for aviation HB-02-A type split pin hammering method and hammering special tool.This technical scheme is combined by mechanical and electric control two parts, simple structure, low cost, and small, easy to carry;It is easy to operate, power part is electric, time-saving and labor-saving;Design is ingenious, can realize split pin two remaining foot synchronous high-precision bending and buckle position, and can ensure that each bending of split pin tail is formed once, effectively avoid the deformation misplacement in the installation process of split pin, while greatly improve installation efficiency, further guarantee the installation accuracy of split pin, maximum limit the stress intensity of split pin, well satisfy the need of high anti-looseness performance and high reliability of mechanical connection structure in aviation field.The present application improves the installation quality of split pin, reduces the work intensity of on-site operator and inspector, guarantees the personal safety of operator, reduces the risk of nut damage.