57results about How to "Easy rescue" patented technology

The invention discloses an intelligent monitoring and safety emergency system based on the health state of a vehicle driver, and relates to the technical field of safe driving. Comprising the steps that the state of a current driving vehicle of a driver is obtained through a physical sign obtaining module and an image recognition module, and when an early warning prompting module recognizes that health data, gravity data and facial expressions of the driver exceed normal ranges, it is indicated that the driver is at risk of myocardial infarction and other abnormal states. Through the vehicle steering wheel and the vehicle seat cushion, direct contact with a driver can be achieved, various accurate driver physical sign data are obtained, the image recognition module is combined to recognize expression features when the driver pains or not, and whether the driver is at risk and has an abnormal state or not is jointly judged. When an abnormal state occurs due to risks, early warning is carried out to remind that the body is possibly abnormal, the vehicle is prevented from being driven again as much as possible, if the body cannot be controlled, rescue is directly requested, a driver is rescued as soon as possible, and loss is effectively reduced.

The utility model relates to the technical field of emergency equipment, and discloses portable emergency equipment which comprises two embedding mechanisms, two splicing mechanisms and a pushing mechanism, the two embedding mechanisms comprise two embedding blocks, friction pads are arranged on the end faces of the opposite sides of the two embedding blocks in an embedded mode, and the two splicing mechanisms are connected with the pushing mechanism. And stable blocks are fixedly arranged at the positions, close to one sides, of the middles of the front end faces and the rear end faces of the two embedded blocks correspondingly, and the two splicing mechanisms comprise two contact plates and two splicing plates. According to the elevator door splicing device, the embedded block is inserted into the inner wall of the mounting groove, then the pushing mechanism slides into the position between the two splicing plates, then the embedded block is inserted into the gap of the elevator door, the rotating block is rotated to drive the threaded rod to rotate, the threaded barrel can push the splicing mechanism, and therefore the splicing mechanism drives the embedded mechanism to pry the elevator door; and in addition, the equipment formed by splicing a plurality of structures is more convenient to carry.

The utility model discloses a storable armrest structure of a first-aid transfer bed, which comprises four bottom shells which are fixedly mounted at four corners of the first-aid transfer bed respectively; the top shell is fixedly mounted on the bottom shell through bolts; the storage connecting mechanism penetrates through the top shell; according to the storable armrest structure of the first-aid transfer bed, the armrest bodies are arranged at the four corners of a bed body of the first-aid transfer bed, and the armrest bodies are connected through the bottom shell, the top shell and the storable connecting mechanism, so that the armrest bodies can be stored in the bottom shell, and the storage connecting mechanism can be used for storing the first-aid transfer bed. Therefore, the handrails can be erected during transferring to push the bed body to move, the handrails can be folded and stored during rescue to be flush with the bed board, rescue and transferring of medical staff are facilitated, and meanwhile operation is easy, convenient and rapid.

The utility model discloses an anti-falling early warning device for old people, which comprises a waist support belt, an early warning mechanism and an anti-falling mechanism, the early warning mechanism is fixedly arranged at one end of the waist support belt along the length direction of the waist support belt, the anti-falling mechanism is electrically connected with the early warning mechanism, the waist support belt comprises a belt body, and the belt body is provided with an extending opening for the anti-falling mechanism to pop out; the anti-falling mechanism comprises an air bag, an air bottle fixedly arranged at the end, away from the early warning mechanism, of the belt body, an air path fixedly connected with the air bag and the air bottle and communicated with the air bag and the air bottle, and a plurality of damping assemblies evenly and fixedly arranged on the belt body and located below the air bag. The damping assembly comprises two fixing pieces which are symmetrically arranged in the thickness direction of the belt body and fixedly connected with the belt body and a damping spring, and the damping spring is perpendicular to the two fixing pieces and fixedly connected with the two fixing pieces. The early warning mechanism comprises a processor, a buzzer, an acceleration sensor and a gyroscope sensor, the input end of the processor is connected with the acceleration sensor and the gyroscope sensor, and the output end of the processor is connected with the gas cylinder and the buzzer. The utility model is used for solving the technical problem that the old people are hurt and nobody knows after falling down.

The invention belongs to the technical field of intelligent monitoring, and particularly relates to a health condition monitoring system and a preparation method thereof. The system comprises a health condition monitoring mask and an upper computer, the health condition monitoring mask comprises a mask and a respiration monitoring unit, a heartbeat monitoring unit and a health condition monitoring unit which are arranged in the mask, and the upper computer comprises a display interface and a data processing module which is arranged in the display interface. The respiration monitoring unit comprises thermoelectric devices prepared from P-type and N-type semiconductor thermoelectric particles, the heartbeat monitoring unit is composed of MAX30102, a voltage stabilizing circuit, a decoupling capacitor and a pull-up resistor which are integrated on a flexible PCB, and the health condition monitoring unit is sewn in a mask and comprises an ADC conversion unit I, a microcontroller chip with a Bluetooth module and an integrated circuit bus. The upper computer comprises a display interface and a data processing module which are used for receiving monitoring data of the respiration monitoring unit and the heartbeat monitoring unit, matching the data of the respiration monitoring unit and the heartbeat monitoring unit into groups for multi-source fusion, and identifying and judging the health condition of a human body according to the data after multi-source fusion.

The utility model discloses a portable constant-temperature constant-pressure invasive arterial pressure monitoring device for preloading heparin saline water. The portable constant-temperature constant-pressure invasive arterial pressure monitoring device comprises a device main body and a disposable sensor consumable for preloading the heparin saline water. The device body is small in size, can be hung on an infusion support for use, and is good in portability. After the improved sensor consumable is connected with an artery indwelling catheter of a patient, an artery pulse signal of the patient can be converted into pressure data to be displayed on a main body screen. A pressure control device and a temperature control device are further arranged in the main body, and a nurse can control the pressure control device and the temperature control device through the touch display screen, so that the pressure and the temperature of liquid in the saline bag are controlled, and constant temperature and constant pressure are kept. A nurse does not need to repeatedly adjust pressure and temperature, and a patient does not feel cold and uncomfortable when flushing the pipeline. According to the device, heparin, normal saline and a traditional sensor are integrally designed, so that the time consumed for nurse article preparation and operation is shortened, the labor cost is saved, and meanwhile, the time is bought for rescuing and transferring a patient.

The utility model discloses a wound flushing device, which belongs to the technical field of field rescue and comprises a portable frame, the inner wall of the portable frame is respectively and fixedly connected with a storage shell and a support table, the upper surface of the portable frame is fixedly connected with a support frame, and the inside of the support frame is slidably connected with two moving plates. An electric telescopic rod is fixedly connected to the inner wall of each movable plate, a connecting plate is fixedly connected to the telescopic end of one electric telescopic rod, a fixing plate adheres to the bottom face of the connecting plate, a disinfection towel is fixedly connected to the bottom face of the fixing plate, and a bottom block is fixedly connected to the telescopic end of the other electric telescopic rod. According to the wound flushing device, through the two electric telescopic rods, the storage shell, the movable plate, a disinfection towel, a micro water pump, a first communicating pipe, a second communicating pipe and a spray head, the wound of a patient can be treated conveniently, and the device is compact in structure, can be conveniently carried by rescue workers and assists the rescue workers in treating the wound of the patient; and the use effect is effectively improved.

The utility model discloses protective safety laminated glass for buildings, which comprises a window frame, glass plates and rapping bars, the glass plates in double-layer design are erected on the inner wall of the window frame, a partition plate is mounted at one corner of the window frame, the rapping bars are arranged on the window frame along the inner side of the partition plate, and the rapping bars are distributed along the corners of the glass plates. A knocking head penetrates into one end of the knocking rod, a connecting plate is movably connected to the outer wall of the end, along the knocking head, of the knocking rod, and a first connecting shaft and a second connecting shaft penetrate into the two ends of the connecting plate correspondingly. When the protective safety type laminated glass for the building is used, the double-layer glass plate breaking structure adopts a first-level lever structure design, the requirement of a user for breaking the whole double-layer glass plate is met, convenience is brought to people who escape from or rescue a room subsequently, the double-layer glass plate breaking structure serves as a prevention structure, a good safety protection effect is achieved, and the service life of the double-layer glass plate is prolonged. The situation that the double-layer glass plate is difficult to break due to disasters is reduced, and convenience is brought to follow-up rescue or escape.

The invention discloses a high-rise building fire-fighting and life-saving multifunctional device capable of self-locking and staying at any position, and belongs to the technical field of fire-fighting and life-saving devices. The device comprises a rescue capsule, a transmission device, a stand column and a hand-cranking device, the stand column is fixedly erected on the ground, the rescue capsule is installed on the stand column and can freely move in the axial direction of the stand column, the transmission device is installed at the bottom of the rescue capsule, the transmission device is connected with the center stand column, and the hand-cranking device is connected with the center stand column. The hand-cranking device is installed on the transmission device, the transmission device achieves vertical movement and stop at any position of the rescue capsule through gear transmission, self-locking and stop of the device are achieved through worm and gear transmission, efficiency is high, controllability is good, and the device is suitable for various high-rise fire fighting and lifesaving applications.

The utility model discloses a coal mine ventilation rescue emergency channel, and relates to the technical field of coal mine ventilation rescue channels, the coal mine ventilation rescue emergency channel comprises a rescue pipeline, the inside of the rescue pipeline is fixedly connected with a plurality of crawling ladders, and the coal mine ventilation rescue emergency channel has the beneficial effects that trapped people can conveniently climb to the upper part of the rescue pipeline through the crawling ladders; through mutual cooperation of a winch, a traction rope, an anti-falling safety garment and a guide wheel, rescue of injured people is facilitated, a third rotating shaft is rotated to drive a worm to rotate, so that a second rotating shaft and a worm gear are driven to rotate, and then a protective net plate is driven to rotate; or a fifth rotating shaft and a second bevel gear are rotated to drive a first bevel gear and a fourth rotating shaft to drive a third rotating shaft, a worm, a second rotating shaft and a worm gear to operate, and the protective net plate is put down; therefore, trapped persons outside the rescue pipeline can conveniently enter the rescue pipeline through the escape exits to escape, or trapped persons climbing up from the lower portion can conveniently escape through the escape exits.

The utility model discloses a small blood drawing table which comprises a blood drawing table installation frame, a hidden automatic disinfection assembly is arranged above the blood drawing table installation frame, a disinfection infusion assembly is arranged on one side of the hidden automatic disinfection assembly, and a suction cup fixing assembly is arranged at the bottom of the blood drawing table installation frame. In actual use, when medical staff collect blood samples outdoors in field operations, the occupied space in a medical vehicle is effectively reduced through the hidden automatic disinfection assembly, the small blood drawing table has the automatic disinfection and sterilization functions and the lighting function, operation or rescue is facilitated under the dark light condition, and the small blood drawing table is suitable for field operation medical service; the clinical laboratory biochemical clinical blood drawing table is convenient to lift through the drawing handle, and the problems that an existing clinical laboratory biochemical clinical blood drawing table in the market is not convenient to carry, extra disinfection equipment is needed for disinfection when the blood drawing table conducts sampling and blood sampling on clinical patients, and taking is inconvenient are solved, so that convenience is brought to work of medical staff.

The utility model discloses an expansion rescue device for a water surface rescue robot, which belongs to the technical field of water surface rescue, aims at solving the problems that the number of water surface rescue personnel is difficult to meet the requirement and the water surface rescue personnel are easy to collide to cause damage, and comprises a suspension platform, the suspension platform further comprises two air bag barrels a, and the two air bag barrels a are arranged on two sides of the suspension platform. Two symmetrically-distributed air bag barrels b are fixed to the side wall of the bottom end of the suspension platform, a driver is arranged on the side wall of the bottom end of the suspension platform, and an adjusting assembly matched with the two air bag barrels a is arranged on one side of the suspension platform. Through the arrangement of the adjusting assembly, the distance between the two air bag barrels a and the suspension platform can be adjusted according to specific requirements, so that rescued persons located on the two sides of the suspension platform can be conveniently rescued, the number of the persons capable of being rescued by the device is effectively increased, practicability is high, and practicability is high. And the rescue work efficiency of the device is greatly improved.

The present invention relates to an energy-saving casement window with safety protection, anti-theft and anti-mosquito functions, comprising an outer frame, a left-opening sash, a right-opening sash, a middle sash and a fixed sash. The left-opening sash and the right-opening sash respectively comprise a glass window sash, an invisible screen window and a guardrail which are sequentially arranged from indoor to outdoor or from outdoor to indoor. The invisible screen window comprises a screen mesh, a screen fan handle, a reel, a sliding chain and a slide rail. After the two screen fan handles on the two invisible screen windows are moved close to each other to a certain position, the screen fan can be opened by inserting the handle plug-in on one of the screen fan handles into the handle slot on the other screen fan handle. When closing, the handle plug-in only needs to be taken out of the handle slot. The present invention is a double-opening casement window, which not only has a good ventilation effect, but also can be used as an inner opening window or an outer opening window by only changing the hardware accessories and the installation direction. The screen mesh of the present invention can use a stainless steel mesh to make a reel invisible screen window, which is mosquito-proof and rat-proof and not easy to be damaged.

The present invention discloses a lifeboat for people falling into water from a height, and relates to the field of underwater lifesaving equipment. The technical solution is as follows: the lifeboat comprises a net unit, which is in a net shape; a floating unit, which is connected to the net unit and can make the net unit float on the water surface; a power unit, which is connected to the floating unit and can drive the floating unit to move on the water surface; a supporting unit, which is arranged between the floating unit and the net unit; the net unit is located above the floating unit; and the net unit is connected to the floating unit through the supporting unit. The beneficial effect of the present invention is that the lifesaving device of the present solution can receive people falling toward the water surface, especially the arrangement of the device in advance for the falling people can better rescue them. The device can reduce the damage caused by the impact of the water surface to people falling into the water from a height, and save the lives of the people falling into the water in time. The device of the present solution fills the gap in water rescue, has a variety of different implementation methods, and can be selectively used according to actual needs.

The utility model relates to a nursing box which comprises a box body and a box cover, an inner cavity of the upper layer of the box body is fixedly connected with a baffle, the baffle divides the upper layer of the box body into a first containing cavity and a second containing cavity, one end of the first containing cavity of the upper layer of the box body is fixedly connected with a guide rail, and the guide rail is sleeved with a sleeve. And one side of the sleeve is fixedly connected with a sliding plate. According to the nursing box, the lower groove of the box body is slidably connected with the drawer, so that the drawer can be quickly opened to facilitate quick searching and taking of medicines; a positioning groove is formed in a guide rail, a sleeve sleeves the outer wall of the guide rail, a positioning pin matched with the positioning groove is assembled at the bottom of a pressing plate, a spring is assembled between the bottom of the pressing plate and the top of the sleeve in a matched mode, the pressing plate is pressed, the positioning pin extrudes the spring and disengages from the positioning groove, the sleeve and a sliding plate are moved, and pressing is released after adjustment is conducted to a proper position. The elastic force of the spring pushes the positioning pin to clamp the positioning groove, so that the proper space can be adjusted according to the size of an article, and the space utilization rate is increased.

The invention relates to the technical field of automobile accessories, in particular to a guide rail structure of an automobile seat with an adjusting mechanism, which comprises a seat guard plate, a seat rail bracket for supporting is arranged on the inner side of the seat guard plate, a slide rail is arranged below the seat rail bracket, and a guide rail is arranged below the slide rail. An adjusting assembly used for adjusting the position of the seat is arranged on the inner side of the seat rail bracket, a first rotating disc and a second rotating disc which are used for adjusting the sliding amplitude of the seat are arranged in the adjusting assembly, a pushing-aside assembly is arranged on the inner side of the adjusting assembly, and a pushing rod is arranged in the pushing-aside assembly. Through starting of the adjusting assembly, the position of an automobile seat is adjusted through the first rotating disc and the second rotating disc, and meanwhile the sliding tightness of the seat is adjusted through the poking assembly and the poking rod.

The utility model discloses a multifunctional nursing bed, which relates to the technical field of nursing beds and comprises a bedstead, one end of the bedstead is fixedly connected with a headboard through bolts, and one end of the bedstead far away from the headboard is provided with a footboard; a bottom plate is arranged at the bottom of the bed frame, supporting columns are fixedly connected to the four corners of the top of the bottom plate, and the tops of the multiple supporting columns are fixedly connected with the bed frame; when the transmission shaft rotates in the forward direction, a plurality of first rotating top plates can rotate upwards and drive overturning plates above the first rotating top plates to rotate with the connecting positions of the overturning plates and the frame as the circle center through rolling wheels, and therefore a patient on the nursing bed can turn over to change the body position. When the transmission shaft rotates reversely, the second rotating top plates can rotate upwards and drive the overturning plates above the second rotating top plates to rotate with the connecting positions of the overturning plates and the frame as the circle center through the rolling wheels, and the patient can turn over in the other direction to change the body position.

The utility model belongs to the field of building decoration, and particularly provides a multifunctional wall body for indoor decoration, which comprises an inner wall body and an outer wall body, the inner wall body and the outer wall body are arranged in parallel, an air layer is arranged between the inner wall body and the outer wall body, the inner wall body is provided with a through hole, the multifunctional wall body further comprises an alarm mechanism, and the alarm mechanism comprises a sleeve and a sound conductor. The sleeve is fixedly installed in the through hole, one end of the sound conductor is in threaded connection with the sleeve, and the other end of the sound conductor is connected with or disconnected from the outer wall body under the screwing of the threads. Through the arrangement of the air layer and the alarm mechanism comprising the sleeve and the sound conductor, the sound conduction performance between the inner wall body and the outer wall body can be changed, on one hand, the sound insulation and fire prevention effects of the wall body can be improved, and on the other hand, when an accident occurs, the wall body can be knocked to call for help.

The utility model relates to the technical field of safety hooks, in particular to an information monitoring device for a safety hook, which comprises a containing box body and the safety hook. Compared with the prior art, the safety hook and the containing box body are arranged, the pressure sensor is arranged on the safety hook, and the processing module, the loudspeaker and the height position sensor are arranged in the containing box body, so that when an operator uses the safety hook, the safety hook is hung on an external bearing handrail or a pipe fitting; the pressure sensor sends an electric signal to the processing module, meanwhile, an operator rotates the locking arm sleeve to enable the two contacts to be communicated, and if the two contacts are not communicated, the processing module controls the loudspeaker to give an early warning to the operator along with the fact that the height position sensor measures signals and inputs the signals to the processing module; meanwhile, related data are uploaded to the Internet through a 4 / 5G module and transmitted to a control background server, so that the use condition of the safety hook is monitored at the non-starting stage of construction, and the safety of construction is ensured.

The application provides a train control method and system, which comprises the following steps: in the case that a train running in a full automatic mode (FAM) or a peristaltic mode (CAM) loses positioning, determining whether the train meets the condition of entering a remote speed limit mode; in the case that the train meets the condition of entering the remote speed limit mode, sending an application of entering the remote speed limit mode to a train intelligent integrated automatic system (TIAS) of the train; after receiving information of agreeing to the application sent by the TIAS, sending the application to a zone controller (ZC) of the train; receiving a latest safety envelope of the train maintained by the ZC when the ZC agrees to the application, updating a current safety envelope of the train according to the latest safety envelope, and sending the current safety envelope to the ZC; and receiving a movement authority calculated by the ZC according to the current safety envelope, and controlling the train to run at a limited speed according to the movement authority in the remote speed limit mode. The application reduces the influence on the operation of the train and facilitates the staff to get on the train for rescue.

The utility model relates to waterproof graphene electric heating rescue gloves belong to rescue gloves technical field, including waterproof gloves main part, graphene electric heating film, magic tape arm band, waterproof battery, waterproof gloves main part sets up neoprene thermal layer and wear -resisting layer, waterproof gloves main part sets up and places the groove with graphene electric heating film, waterproof gloves main part sets up moisture absorption sweat fabric lining, waterproof gloves main part sets up magic tape wrist band, magic tape arm band sets up battery storage bag, waterproof battery is placed in battery storage bag. The utility model, glove outer configuration has antiskid layer, inside configuration has graphene heating film, configuration and battery placement area, can be used for power supply to graphene heating film when configuring waterproof battery under water diving or winter water area rescue, make overwater rescue more convenient, prevent hand stiff because of cold, can give consideration to protectivity, flexibility and comfort in extreme environment, improve rescue efficiency.

The utility model relates to the technical field of rescue buoy fixing devices, in particular to a ship drowning personnel rescue buoy fixing device which comprises a ship body, a guardrail is installed and connected to the upper end of the ship body, an installation plate is movably connected to the guardrail, and a plurality of hooking devices are fixedly connected to the right end of the installation plate. And the plurality of hanging devices are movably connected with buoy bodies. According to the fixing device for the rescue buoy for the personnel falling into the ship, a plurality of hooking devices are arranged at the right end of the mounting plate, the poking piece is poked to drive the limiting block to slide in the baffle, the end of the limiting block retreats from the clamping groove formed in the hooking piece while the limiting block slides, limiting on the baffle is relieved, the angle of the baffle can be adjusted, and therefore the rescue buoy can be used for rescue of the personnel falling into the ship. And therefore, the buoy body hung in the hanging piece is taken out, the taking efficiency is high, and people falling into water can be conveniently rescued.

The invention relates to the technical field of lifesaving equipment, and discloses a water lifesaving knapsack which comprises a life jacket, a plurality of fixing straps are fixedly connected to the outer wall of the life jacket, a main air bag is fixedly connected to the top of the life jacket, a plurality of branch air bags are fixedly connected to the outer wall of the main air bag, and the branch air bags are annularly arrayed on the outer wall of the main air bag. An automatic inflation valve is fixedly connected to the top of the main air bag, a fixing ring is fixedly connected to the outer wall of one branch air bag, a pull ring is arranged on the inner wall of the fixing ring, a rope is fixedly connected to the outer wall of the pull ring, a first self-adhesive tape is fixedly connected to one side of each branch air bag, and a second self-adhesive tape is fixedly connected to the other side of each branch air bag. According to the device, air is injected into the main air bag and the branch air bags through the automatic inflation valves, so that the main air bag and the branch air bags are of a spherical tumbler structure, a drowning person is conveniently supported, the drowning person is conveniently rescued through connection of the fixing rings and the ropes, and the rescue effect of the device is enhanced.

The invention discloses a quick rescue device for a stock bin and a using method.The quick rescue device for the stock bin comprises a material isolation barrel, openings are formed in the bottom and the top of the material isolation barrel, lifting lugs used for being connected with lifting equipment are arranged on the material isolation barrel, and a discharging mechanism is arranged in the material isolation barrel; the discharging mechanism comprises a conveying pipe and a driving mechanism, a conveying screw is arranged in the middle of the conveying pipe and connected with the driving mechanism, a feeding port is formed in the bottom end of the conveying pipe, and a discharging port facing the outer side of the material isolation barrel is formed in the upper portion of the conveying pipe. A supporting mechanism for people to grasp or stand is arranged in the material isolation cylinder; the device has the advantages of being easy to operate, high in safety and high in efficiency.

The utility model discloses an electronic door lock panel, and belongs to the technical field of electronic door locks, and the electronic door lock panel is characterized by comprising a panel shell, the panel shell comprises a first panel, a second panel and a third panel, the first panel comprises a fixed door handle and a first mounting plate; the second panel comprises a movable door handle and a second mounting plate; the first lock body comprises a first spring bolt; the second lock body comprises a second spring bolt; the emergency device comprises a temperature-sensing and smoke-sensing sensor; the key is arranged on the first panel; and the electronic driving assembly is in communication connection with the temperature-sensing and smoke-sensing sensor and is in communication connection with the keys. According to the electronic door lock panel, the two spring bolts are arranged, safety is improved, the emergency device is arranged, the panel can be automatically unlocked when an emergency occurs indoors, and the door handle is further arranged on the panel so that a door can be conveniently closed and articles can be conveniently hung.

This utility model discloses a car escape system, including a tray mounted on the bottom of the car, with a throwable counterweight placed on top of the tray; one side of the tray is rotatably connected to the car, and the other side is locked by a locking tongue; a control component is used to control the locking tongue to unlock the tray according to the car's operating conditions. Thus, when the elevator car is trapped and in equilibrium with the counterweight, the throwable counterweight at the bottom of the car is released to break the balance, allowing the car to slide to a landing or other suitable area, facilitating rescue, significantly improving rescue efficiency, and simplifying subsequent maintenance.

This application relates to a synchronous door knife with a car door lock, comprising a door knife base plate, a knife arm assembly disposed on the door knife base plate for opening the landing door, a connecting rod assembly rotatably disposed on the door knife base plate for opening or closing the knife arm assembly, and a swing arm assembly rotatably disposed on the door knife base plate for driving the connecting rod assembly to rotate. The door knife base plate is also provided with a locking hook assembly for locking or unlocking the car door. A rotation point is located between the swing arm assembly and the door knife base plate, and a compression spring is disposed between the swing arm assembly and the door knife base plate, the compression spring having a pushing force. When the pushing force is located on one side of the rotation point, the compression spring tends to force the swing arm assembly to rotate to one side; when the pushing force is located on the other side of the rotation point, the compression spring tends to force the swing arm assembly to rotate to the other side. This application uses the compression spring to keep the swing arm assembly stationary when there is no external force, thereby reducing the difficulty of leveling the landing during elevator power outages.