47results about How to "Life safety threat" patented technology

The invention discloses a motor function rehabilitation monitoring system based on a wireless body area network. The system comprises a sensor terminal node, a wireless gathering node, a wireless body area network gateway, a personal terminal, a remote medical terminal and an information feedback system, wherein the sensor terminal node comprises a medical sensor, a signal conditioning circuit, a microprocessor unit and a wireless transceiver unit which are sequentially connected, the medical sensor sends collected data into the signal conditioning circuit for preprocessing, and the wireless transceiver unit is controlled to perform wireless transmission after the data is processed by the microprocessor unit; the data collected by the sensor terminal node sequentially passes through the wireless gathering node and the wireless body area network gateway and is respectively transmitted into the personal terminal and the remote medical terminal, and the data is transmitted into the information feedback system after being processed by the remote medical terminal, and is displayed by a 3D model built through the information feedback system. The monitoring system can be used for monitoring the exercise rehabilitation situation of a patient in real time, providing reasonable guidance and advices for subsequent rehabilitation training and improving the rehabilitation training effect.

The invention discloses a transformer substation inspection system based on a mobile terminal. A inspection worker holds a mobile terminal by hand to plan an inspection path and perform inspection service, the mobile terminal and an inspection server perform information interaction through a communication module, the mobile terminal transmits the planned path of the inspection worker, access controller authority application information and inspection service information to the inspection server, and the inspection server positions the inspection worker according to the information transmittedby an RFID reader-writer, and controls an electromagnetic access controller and an illumination lamp to be turned on or turned off. Path planning, authority application and inspection service are performed by holding the mobile terminal by hand; real-time information interaction is performed with the inspection server, and the inspection efficiency is improved; an RFID electronic tag is positionedthrough a positioning module; a worker at a control center can conveniently know the inspection progress; the electromagnetic access controller can be controlled through an access controller controlmodule, and the phenomenon that life safety of the inspection worker is threatened due to the fact that the inspection worker enters a dangerous zone by mistake is avoided.

The invention relates to a cable pipeline construction method. The method comprises the steps of providing a corrugated pipeline, providing a sealing device, placing the sealing device in the corrugated pipeline, aerating the sealing device so as to fill the sealing device and seal the corrugated pipeline and sealing the sealing device. The invention is used for solving the problems that the toxic gas poisoning incident easily occurs in the man well and the transmission quality is influenced as an optical cable in a pipeline is soaked in the water.

The invention relates to the technical field of automobile part processing, in particular to a welding manipulator with a protection function for automobile parts. The welding manipulator comprises abase and a mechanical arm, wherein the upper end face of the base is fixedly connected with the mechanical arm, the left side of the mechanical arm is fixedly connected with a waste gas treatment device, the upper end face of the waste gas treatment device is fixedly connected with a tensioning device, the upper end face of the tensioning device is fixedly connected with the mechanical arm, the left end face of the mechanical arm is fixedly connected with a welding head, the outer side of the welding head is rotationally connected with a protection device, and the protection device comprises arotating ring and a connecting plate. According to the welding manipulator with the protection function for the automobile parts, through the arranged rotating ring, the connecting plate, a limitingspring, a protective cover and a fixing block, when the welding head carries out welding work, the protective cover can shield the welding part, meanwhile, the protective cover can filter out infraredand ultraviolet rays harmful to human eyes and generated by electric welding, meanwhile, the strong light is reduced to the weak light which can be borne by the human eyes, the eyes of people are effectively protected, and a good protective effect is achieved.

The invention discloses a multifunctional gas concentration detector, which includes an Atxmega64D4 microcontroller, a signal processing and acquisition device, a display device, a wireless communication device, an acousto-optic alarm and a button device; The output end of button device is connected with the input end of Atxmega64D4 microcontroller, and the input end of described signal processing and collection device is connected with the output end of Atxmega64D4 microcontroller, and described display device, wireless communication device, sound and light alarm and signal The output terminals of the processing and collecting device are connected; the signal processing and collecting device mainly include a methane measuring device and a carbon monoxide measuring device; the advantage of the present invention is that a multifunctional gas concentration detector of the present invention can detect methane gas and Simultaneously detects carbon monoxide gas, has a two-in-one detection function, and can also be connected to a PDA and individual rescue system through a wireless interface.

The invention belongs to the technical field of medical apparatus sterilization, particularly relates to fast medical apparatus sterilization equipment, and aims to solve the technical problem of providing the fast medical apparatus sterilization equipment which is excellent in sterilization effect and high in working efficiency, and does not threaten the life safety of a patient. The fast medicalapparatus sterilization equipment comprises a bottom plate, two support rods, a box body, a box cover, a rotary device, a net cage, a drying device and the like, wherein the support rods are connected with the top of the bottom plate in bilateral symmetry through bolts and are vertically arranged; the box body is mounted at the tops of the support rods through bolt connection; the rotary device is arranged at the top of the bottom plate between the two support rods; the net cage is connected with the rotary component of the rotary device and is positioned in the box body; and the box cover isarranged at the top of the box body. The fast medical apparatus sterilization equipment realizes the effects of being excellent in sterilization effect and high in working efficiency, and not threatening the life safety of the patient.

The invention relates to an online copper bar cutting machine. The online copper bar cutting machine comprises a base, a trolley arranged on the base, a tool apron fixedly arranged on the trolley, an upper tool used for cutting a copper bar, a downward pressing air cylinder and a meter counter. On the trolley, a traction air cylinder is used for driving the tool apron to horizontally move and reset. The upper tool is driven by a hydraulic cylinder, and the upper tool does not coincide with the vertical plane of the tool apron. The downward pressing air cylinder is right opposite to the center position of the tool apron. The downward pressing air cylinder and the tool apron are matched to fix a copper bar. According to the online copper bar cutting machine, the labor force cost is saved, automatic operation is more convenient, losses are avoided, and potential safety hazards are avoided.

The invention relates to a novel vehicle door for constraining the deformation caused by side impact. The novel vehicle door comprises a vehicle door body and an interior trim panel, wherein the vehicle door body consists of an outer plate, an anti-collision beam, a reinforcing plate and an inner plate, wherein an outer framework is arranged on the edge of the outer plate; the inner plate is fixed on the outer framework; a high-strength tensile fiberboard attached to the inner plate is arranged on the inner plate; the high-strength tensile fiberboard and the inner plate are fixed on the outer framework; and the interior trim panel is fixed on the outer side of the high-strength tensile fiberboard. The novel vehicle door disclosed by the invention has the characteristics of stronger side impact resistance and capability of avoiding the threatening to the life safety of passengers due to extrusion of space in the vehicle.

The invention discloses an adjusting mechanism of a ceramic calcining device. The adjusting mechanism comprises a base; a calcining chamber is fixedly connected to the top of the base; a placing platform is movably connected inside the calcining chamber; a ceramic body is movably connected to the top of the placing platform; and a screw is movably connected to the top of the calcining chamber through a bearing. According to the adjusting mechanism of the ceramic calcining device, a first motor drives a worm to rotate, the worm drives the screw through a worm gear to rotate, the screw rotates to drive a screw sleeve to move upwards, thus the screw sleeve drives a pulling block to pull a fixing block to move upwards through a crank, the fixing block drives a burner to rotate by using a connecting plate as a circle center, and the problems that cracks appear easily on the surfaces of ceramic forgings, the quality of finished products is affected and the aesthetic degree of porcelains is reduced due to the fact that angles of existing calcining devices are generally fixed and the ceramic forgings are unevenly heated during calcining are solved. The adjusting mechanism of the ceramic calcining device has the advantages that the angle of the calcining device can be changed and the like.

The invention discloses a panorama camera shooting method of an intelligent digital drilling panoramic camera device, and belongs to the technical field of rock engineering borehole camera shooting. The method comprises the following steps: a walking speed of a device body is set on an analysis control system; image information shot in a walking process of the device body in a borehole is timely transmitted to the analysis control system; when the device body encounters an obstacle in a forward moving process, a driving wheel enables a spring at the front end of a waterproof case to be extended to allow the driving wheel to pass over the obstacle, and a driven wheel enables a spring at the rear end of the waterproof case to be compressed to allow the driven wheel to pass over the obstacle; and when the device body encounters the obstacle in a retreating process, the driven wheel enables the spring at the rear end of the waterproof case to be extended to allow the driven wheel to pass over the obstacle, and the driving wheel enables the spring at the front end of the waterproof case to be compressed to allow the driving wheel to pass over the obstacle. The method provided by the invention can be applied to camera shooting observation of boreholes with various diameters, is high in security, and integrates borehole camera shooting observation and information processing.

The invention discloses a dangerous rock falling alarm device for a high-steep slope around a railway. The device comprises a protection detection system, a data transmission system, a central alarm system and an on-site driving alarm device. The protection detection system comprises a steel wire protection net and sensors. The steel wire protection net is mounted on a side of the high-steep slopearound the railway. The sensors are mounted on the steel wire protection net and are networked in an array. The data transmission system is connected with the sensors. The central alarm system is connected with the data transmission system. The on-site driving alarm device is connected with the central alarm system. The device can replace the method of manual monitoring, meet the daily patrols ofthe high-steep slope around the railway, reduce the intensity of the work of monitoring personnel, and prevent the life safety of the monitoring personnel from being threatened by sudden disasters such as slippage, collapse or mudslides.

The invention relates to the technical field of automobile charging piles, in particular to a movable new energy automobile charging pile which comprises a device body, a charging head, a charging sleeve, a conductive block and an automobile charging port, the charging head is inserted into the device body, a fixing mechanism is arranged in the device body, and an anti-electric shock mechanism isarranged in the charging head; the anti-electric shock mechanism comprises a fixed plate, a fixed rod, a first spring, a first sliding block, a first sliding groove, a movable rod, a sliding plate, aconducting strip, a movable inserting groove, a second sliding block, a second sliding groove, a fixed block, a wire cavity, a winding sleeve, a rotating groove, a conducting wire, a conducting electrode, a torsional spring, a movable plate, a third sliding groove, a conducting inserting groove and a sleeve groove. The charging pile is advantaged in that problems that most of existing automobile charging piles cannot move and are not provided with anti-electric shock structures, and existing new energy automobile charging piles are loose in connection with charging heads and prone to falling off are solved.

The invention discloses a fire hydrant box which is convenient for users to use. It comprises a box body. A motor is fixedly connected to the right side of the inner wall of the box. A first connecting rod is fixedly connected, a first roller is sheathed on the surface of the first connecting rod, a push rod is fixedly connected to the surface of the first roller, and a placement plate is slidably connected inside the box body. The present invention solves the problem that the existing fire hydrant box is inconvenient for users to take by setting the placement plate, the motor, the turntable, the first connecting rod, the first roller, the push rod, the bracket, the second roller and the second connecting rod. For the problem of taking the fire extinguishing device, the user-friendly fire hydrant box has the advantage of being easy to take, which reduces the time for the user to take the fire extinguishing device, thereby extinguishing the fire at the best time, reducing the impact of the fire on the user. Threat to the life safety of people, it is worth promoting.

The invention provides a double-section bearing type normal-pressure tank truck which comprises a tank body, the tank body comprises a first liquid tank and a second liquid tank, the opposite sides ofthe first liquid tank and the second liquid tank are fixedly connected, a coaming is fixedly connected with the top of the outer surface of the tank body, and a truck frame is fixedly installed at the bottom of the outer surface of the tank body; a disc brake shaft is fixedly installed on one side of the bottom of the truck frame, hubs are fixedly connected with the front end and the rear end ofthe disc brake shaft, tires are arranged on the outer surfaces of the hubs, a supporting device is fixedly connected with the bottom of the outer surface of the tank body and located on one side of the truck frame, and stainless steel discharging pipe boxes are fixedly connected with the front side and the rear side of the outer surface of the tank body. According to the double-section bearing type normal-pressure tank truck, the disc brake shaft and the like are connected with the tank body through bolts, disassembly is convenient, and repair and maintenance are facilitated.

The invention provides a monitor with a fault early-warning function. The monitor comprises a fault early-warning module. The fault early-warning module comprises a master control unit. The master control unit is connected with a voltage acquisition unit, a current acquisition unit, a GPS unit and a communication unit. The fault early-warning module further comprises a power supply unit. The powersupply unit supplies electric energy to the master control unit, the voltage acquisition unit, the current acquisition unit, the GPS unit and the communication unit. The monitor with the fault early-warning function according to the invention can monitor the health state of key sensors and components in the monitor in real time through using the fault early-warning method, and furthermore can predicate the sensor and components with a to-be-occurred fault, thereby preventing a threat to life safety of a patient caused by the fault of the monitor in a using process.

The invention discloses an automobile safety protection device, which comprises a front body, the left side of the front body is fixedly connected with an accommodation block 1, the interior of the accommodation block 1 is fixedly connected with an accommodation block 2, and the interior of the accommodation block 2 A baffle is fixedly connected, and the baffle divides the inner cavity of the receiving block 2 into a water storage tank 1 and a water storage tank 2, the water storage tank 1 is located on the left side of the water storage tank 2, and the water storage tank 1 and the water storage tank 2 A push plate one and a push plate two are movably connected respectively. The present invention achieves the effect of reducing the moving speed of push rod 1 by setting push plate 1 in cooperation with push plate 2, so that push block 1 cooperates with push block 2 to limit the speed of the transmission block, thereby achieving the effect of shock absorption and being able to Most of the impact force is absorbed, so as to effectively protect the life safety of the people in the car, prevent the life safety of the people in the car from being threatened, and make it very convenient for users to use.

The invention relates to the technical field of rescue equipment and in particular to a pressure underwater diving self-rescue device which is capable of extruding or releasing an airbag, preventing the situation that a threaded tube is not completely rotated by a diver and maintaining life safety, and is relatively high in practicability, in addition, a user can be effectively assisted, the device is applicable to users of multiple body types and is relatively low in use limit, and thus the use reliability of the device is improved. The pressure underwater diving self-rescue device comprisesan airbag, an air supply floater, a fixing rack, a threaded rod, a threaded tube, a clamping plate, a communicating hose as well as a first partition plate, a second partition plate, a servo motor, arotating roller, a transmission belt, a baffle cover, a cylinder, a driving motor, stirring blades and a sealing plate, wherein the top end of the communicating hose is communicated with the bottom end of the air supply floater; the servo motor is mounted on the bottom wall of a groove; a transmission shaft is arranged at the output end of the left side of the servo motor; the transmission shaft is sleeved by the rotating roller; a driving shaft is arranged at the output end of the bottom of the driving motor; the stirring blades are arranged on the driving shaft.

The invention belongs to the field of household electrical appliances and particularly relates to an electric leakage detection device of a washing machine. The electric leakage detection device of the washing machine comprises a detection module, an AD (Analog-to-Digital) conversion module, a control module and a power circuit, wherein the detection module is used for detecting whether electricity exceeding the safety of a human body leaks from the washing machine, and outputting a signal to the AD conversion module; the AD conversion module is used for digitizing the signal output by the detection module and outputting the digitized signal to the control module; the control module is used for receiving the signal output by the AD conversion module, judging whether the electricity exceeds the safety of the human body, and controlling the on and off of a buzzer; the power circuit is used for supplying power to the detection module, the AD conversion module, the control module and the buzzer. The electric leakage detection device of the washing machine can be used for immediately detecting whether the electricity which leaks in the washing process of clothes exceeds the safety of the human body, and making a reminding sound, so that the life safety of a user can be well prevented from being threatened by electric leakage.

The invention discloses an automobile bumper having a good collision preventing effect. The automobile bumper comprises an automobile bumper body, wherein two ends of the outer wall of one side of theautomobile bumper body are provided with foglight installing holes, the position, close to the bottom, of the outer wall of one side of the automobile bumper body is provided with a buffer strip, theposition, located in the middle, of the outer wall of one side of the automobile bumper body is provided with a placement opening, the inner wall of the placement opening is provided with a grid, theposition, close to the middle, of the outer wall of one side of the automobile bumper body is provided with a traction block installing hole, and the positions, close to the middle, of two ends of the outer wall of one side of the automobile bumper body are both provided with first fixing holes. The automobile bumper can prevent the phenomenon that the outer wall of the automobile bumper is damaged due to collision and accordingly the life safety of a driver is threatened, prevent the phenomenon that friction produced between a license plate falling from the automobile bumper due to jolting and the ground reduces the security coefficient of an automobile in running and can prevent the phenomenon that automobile jolting causes falling of the automobile bumper from the automobile.

The invention discloses an escape mechanism of an unarmed escort securicar. The escape mechanism comprises a car body, wherein the front surface of the car body is fixedly connected with the back surface of a bottom plate, a third chute is formed in the upper surface of the bottom plate, a third sliding block is arranged in the third chute, and a trapezoidal block is fixedly connected to the uppersurface of the third sliding block. According to the escape mechanism of the unarmed escort securicar, a motor, a threaded post, a threaded cap, a bearing, a driving gear, a driven gear, a fixed pulley, a first telescopic device, a second telescopic device, a first sliding block, a first chute and a connecting rod are arranged and formed, so that when a driver need to open a car door, the motor is controlled to operate, so that the driving gear rotates, the driven gear is driven to rotate by the driving gear, the driver can open the car door in two modes, the driver can quickly escape in danger and does not need to worry about the damage to a door opening device, the time of the driver cannot be wasted, and the life safety of the driver cannot be threatened.

The invention provides an automobile control device which comprises a detection unit which comprises one or more of a front camera and a microphone arranged on an automobile, and an acceleration sensor, a processor suitable for implementing each instruction, and a memory suitable that is used for storing a plurality of instructions for being loaded and executed by the processor: when the automobile is static, acquiring images and / or sounds in the automobile through the detection unit; judging whether the driver sits or not according to the image and / or sound; when judging that the driver does not sit, judging whether a passenger sits or not; when judging that the passenger sits, controlling a vehicle door to be locked; judging whether the acceleration value of the automobile is greater than a preset value; when judging that the acceleration value of the automobile is larger than the preset value, controlling the automobile door to be unlocked; and when the acceleration value of the automobile is not larger than the preset value, controlling an automobile window or an air conditioner to be opened. The automobile control device can protect life safety of passengers when the passengers are forgotten in the automobile. The invention further provides an automobile safety protection method.

The invention discloses a defibrillator for a CCU. The defibrillator comprises a main body, wherein a control switch and a display screen are arranged on the upper surface of the main body, the inputend of the control switch is electrically connected with the output end of a built-in battery, the built-in battery is arranged inside the main body, the output end of the control switch is electrically connected with the input end of a processor, the processor is arranged inside the main body, the output end of the processor is electrically connected with the input end of the display screen, andthe processor and a wireless transmission device realize bidirectional electric connection. For the defibrillator for the CCU provided by the invention, the built-in battery is arranged in the main body, so that emergency power supply can be realized for the defibrillator when a hospital has accidental power failure, thus threat caused to the life security of patients due to power failure of the defibrillator is prevented, when the defibrillator has abnormity, the processor can convey the corresponding information to a monitor terminal of a duty room through the wireless transmission device, an operator on duty is rapidly informed within short time, thus the delaying of disease conditions of the patients is avoided, and the body health of the patients is benefited.

The invention discloses a battery fire extinguishing device which comprises a battery pack metal shell, a plurality of battery packs are arranged in the battery pack metal shell, each battery pack comprises two battery bodies, each battery body is fixedly installed on the inner wall of the battery pack metal shell, and a fire extinguishing agent tank is arranged between the two battery bodies. The fire extinguishing agent tank is fixedly installed on the inner wall of the battery pack metal shell, a fusing metal sheet is arranged on the side wall of the fire extinguishing agent tank, a circuit breaking mechanism and a temperature sensor are arranged between every two adjacent battery packs, and the output end of each temperature sensor is electrically connected with an alarm. According to the invention, through fire extinguishing agent cooling, temperature sensing alarm and high-temperature circuit breaking, a battery accident is killed in an initial state, and the safety of the battery pack is improved; property loss caused by fire disasters of the electric automobile or the battery car is reduced; and threats to life safety of personnel are avoided.

The invention discloses a system for preventing a hydraulic supporting column of a crane from being shut down suddenly. The system comprises a sensor I, a processor I, a sensor II, a processor II anda starter; the sensor I is connected with the processor I, t he sensor II is connected with the processor II, the starter is connected with the processor I and the processor II, the sensor I and the sensor II are connected with a controller of the hydraulic supporting column, in the work process of the crane, the accident of sudden parking is avoided, the accident condition that an object is proneto falling off from the air is completely eradiated, the thread to the life safety of the worker is avoided, and when the crane works, the warning line does not need to be pulled up around the periphery.

The invention belongs to the field of household electric appliances, and in particular relates to an automatic electric leakage power-off device. The automatic electric leakage power-off device comprises a detection module, an AD conversion module, a control module, a switch circuit module and a power supply circuit, wherein the detection module is used for detecting the electric leakage phenomenon of the washing machine and outputting a signal; the AD conversion module is used for digitalizing the output signal of the detection module and outputting a signal; the control module is used for receiving the output signal of the AD conversion module, then judging whether the leaked electric power exceeds the safety utilization of electric power for the human body and controlling the switch circuit module and an LED display lamp to be switched on and off; the switch circuit module is used for switching on and off the power supply circuit of the washing machine; the power supply circuit is used for providing power. By adopting the automatic electric leakage power-off device, whether the leaked power exceeding the safety utilization of electric power for the human body exists or not can be detected in the first time, the power supply of the washing machine can be immediately powered off once the leaked electric power exceeds the safety utilization of the electric power for the human body, and thus the life security of a user can be well prevented from being threatened by the electric leakage.

The invention discloses an intelligent digital drilling panoramic camera device, which relates to a device for taking pictures of boreholes in rock mass engineering. It includes a device body, a waterproof case, a transparent tube, a battery, a driving wheel, a driven wheel, and a motor; a panoramic camera mechanism is installed in the transparent tube, the output end of the battery is connected to the motor, and the output end of the motor is connected to the drive through the front wheel drive mechanism. The wheel is connected; the front wheel diameter reducing mechanism is installed between the driving wheel and the waterproof casing, and the rear wheel diameter reducing mechanism is installed between the driven wheel and the waterproof casing; the panoramic camera mechanism, the front wheel driving mechanism, the front wheel diameter reducing mechanism Both the mechanism and the reducing mechanism of the rear wheel are wirelessly connected with the analysis control system located on the ground. The invention has a wide application range, can be applied to borehole camera observation of various apertures, is convenient to operate, is convenient and intelligent, has high safety, and integrates borehole camera observation and information processing.

The invention discloses a panoramic camera method of an intelligent digital drilling panoramic camera device, which belongs to the technical field of rock mass engineering drilling camera technology. It includes setting the walking speed of the device body on the analysis control system; transmitting the image information captured by the device body during the walking process in the borehole to the analysis control system in real time; The driving wheel stretches the first spring located at the front end of the waterproof case, making the driving wheel over the obstacle; the driven wheel extends the second spring located at the rear end of the waterproof case, making the driving wheel over the obstacle; when the device body is in the process of retreating When an obstacle is encountered, the driven wheel stretches the second spring located at the rear end of the waterproof housing, so that the driven wheel can overcome the obstacle; the driving wheel stretches the first spring located at the front end of the waterproof housing, and makes the driving wheel overcome the obstacle thing. The invention can be applied to borehole camera observation with various apertures, has high safety, and integrates borehole camera observation and information processing.

The invention provides a heating control device, a heating control method and a cooking appliance. The heating control device comprises a DC power supply circuit, an AC power supply circuit, an AC / DC selection circuit and a detection control circuit, wherein the AC power supply circuit is connected with the AC / DC selection circuit; one end of the AC / DC selection circuit is connected with the detection control circuit, and the other end is connected with an object to be heated; and the detection control circuit is used for detecting a resistance value and / or a current value of the object to be heated, determining whether the object to be heated is a detachable heating plate according to a detection result, controlling the AC / DC selection circuit to be connected with the AC power supply circuit after determining that the object to be heated is a detachable heating plate according to the detection result, and controlling the AC / DC selection circuit to be connected with the DC power supply circuit when determining that the object to be heated is not a detachable heating plate according to the detection result, thus the detection control circuit cannot use an alternating current provided by the AC power supply circuit for heating the detachable heating plate normally. By adopting the heating control device, the heating control method and the cooking appliance, the safety of a user using the cooking appliance can be effectively ensured.

The invention relates to the technical field of heavy truck cab welding, in particular to a protective device used for heavy truck cab assembly welding. The protective device comprises a base, a welding mechanical arm and a plumb joint. The upper end surface of the base is fixedly connected with the welding mechanical arm and a waste gas treatment device which are distributed left and right. The left end surface of the welding mechanical arm is fixedly connected with the plumb joint. The outer side of the plumb joint is in sliding connection with a protective unit. The upper end surface of theprotective unit is fixedly connected with the welding mechanical arm. A limit unit is arranged at the right side of the welding mechanical arm. The lower end surface of the limit unit is fixedly connected with the welding mechanical arm. According to the protective device provided by the invention, by arranging a fixing frame, a spiral ring and a push rod, a protective hood achieves shielding andprotecting purposes, and human eyes are not affected; an arranged telescopic spring has a certain buffer effect when the protective hood makes contact with a machine and protects the protective hoodagainst collision damage; and an arranged collecting box can collect fragments, and the situation that the welding fragments spatter everywhere and affect a working environment is avoided.