103results about "Mechanical audible signalling" patented technology

The mining lithium battery protection device comprises a battery box body, a fire extinguishing trigger mechanism, a fire extinguishing assembly and an acoustic early warning unit, the interior of the battery box body is divided into a battery cabin and an auxiliary cabin which are distributed up and down through a sealing partition plate, the interior of the battery cabin is used for containing a lithium battery pack, and the fire extinguishing trigger mechanism comprises a communicating pipeline and a valve; the fire extinguishing assembly comprises a fire extinguishing agent container, the output end of the fire extinguishing agent container is located on one side of the lithium battery pack, and the valve is used for controlling the output end of the fire extinguishing agent container to be opened and closed. The acoustic early warning unit comprises a brass whistle, the air inlet end of the brass whistle is communicated with the auxiliary cabin, and the sound outlet of the brass whistle is located outside the battery box body. A mechanical fire extinguishing and early warning triggering mechanism is adopted, electric power work is not depended, the structure is simple and stable, and the early warning and fire extinguishing actions are prevented from being influenced by factors such as power failure and electronic element damage.

The invention relates to the technical field of attenuators, and discloses a conductor short circuit type mechanical adjustable attenuator which comprises an attenuator body, and a first interface and a second interface are arranged on the two sides of the attenuator body respectively. A concentric-square-shaped mounting plate is arranged in an inner cavity of the attenuator body, and a knocking plate is arranged in an inner cavity of the concentric-square-shaped mounting plate. According to the invention, when a worker debugs the attenuator body, and when the precision between the worm and the worm gear and the precision between the lead screw and the guide sleeve are not accurate, the number of turns of rotation of the worm is increased, so that the movement track of the concentric-square-shaped mounting plate arranged below becomes more accurate; a knocking plate can horizontally move between a convex block and a groove which are arranged on a mounting plate, so that the knocking plate is overturned, and a worker is reminded of inaccurate precision between a worm and a worm gear or between a lead screw and a guide sleeve and the like at the moment; therefore, workers can conveniently perceive in the debugging process at the first time, and maintenance and replacement are achieved.

A ship navigation assisting device includes: an area setter 304 that sets, for a target ship, a polygonal safe navigation area defined by a plurality of vertices and surrounding the target ship; a collision point calculator 305 that calculates, based on a speed of the own ship, a relative position between the own ship and the target ship, and a velocity vector of the target ship, collision points between each of the plurality of vertices constituting the safe navigation area and the own ship; and a collision danger area calculator 306 that connects the plurality of collision points calculated by the collision point calculator 305 to calculate a collision danger area.

The utility model belongs to the field of municipal engineering, and provides a safety warning device for municipal engineering, which comprises a shell, a safety warning device and a safety warning device, the winding rod is rotatably arranged in the shell; the fluorescent isolation strip is wound on the winding rod, the inner end of the fluorescent isolation strip is fixedly connected with the side wall of the winding rod, and the outer end of the fluorescent isolation strip extends out of the window; the winding assembly is arranged in the shell and used for winding the fluorescent isolation strip; and the lighting assembly is arranged at the top end of the shell. When the safety warning device is used on a construction site at night, even if light is poor, the fluorescent isolation strip has a good warning effect. And the lighting assembly is arranged, so that a certain lighting effect can be achieved, passing personnel and vehicles can conveniently find the safety warning device shell body and the fluorescent isolation strip in time, and the warning effect is improved.

The invention belongs to the technical field of water conservancy projects, and particularly relates to a water level alarm device for water conservancy project construction, which comprises a base, one side of the upper end surface of the base is fixedly connected with a support column, one side of the upper end of the support column is rotatably provided with a rotating roller, the rotating roller is wound with a rope, and one side of the upper end of the support column is provided with a support roller. The rope is attached to the surface of one side of the supporting roller, a shell is fixedly connected to the end of the rope, an alarm is arranged on one side of the upper end of the shell, two first sliding rods are slidably connected to one side of an inner cavity of the shell, and a lifting plate is fixedly connected to the lower ends of the first sliding rods. By means of the water flow driving type alarm assembly, when the water level rises to the warning line, the edge of the mounting plate is flush with the impact ball, when water flow impacts the floating block, the edge of the mounting plate makes contact with the impact ball, and when the edge of the mounting plate makes contact with the impact ball, a sound is made to remind a construction party to take emergency measures in time.

The utility model belongs to the technical field of alarm equipment, and particularly relates to an anti-collision rope. Comprising an upper mounting plate, a lower mounting plate, an alarm mechanism and a rope body, the alarm mechanism is fixedly connected to the upper mounting plate and comprises an outer box body, a normally-closed switch is arranged at the top of the outer box body, a trigger block is arranged in the outer box body, the top end of the trigger block makes contact with the normally-closed switch, and a guide column is fixedly connected to the bottom end of the trigger block; the bottom end of the guide column downwards penetrates through the bottom wall of the outer box body to be fixedly connected with one end of a rope body, the other end of the rope body is fixedly connected with the lower mounting plate, the guide column is sleeved with a first spring, and an alarm is arranged on the outer wall of the outer box body and connected with an external power source through a normally-closed switch. The car washing rope can be installed on the two sides of a car washing shed, when the rope body is touched, the rope body can pull the trigger block downwards, the trigger block is made to be separated from the normally-closed switch, the alarm can give an alarm, and therefore a driver is reminded to stop the car immediately, and collision accidents are avoided.

The invention discloses a mining audible and visual alarm based on a mining area environment, and belongs to the technical field of alarm devices. The alarm comprises a box body, and a monitoring sensor and an alarm assembly are arranged in the box body; the alarm assembly performs corresponding actions by monitoring a vibration signal sent by the sensor, and the alarm assembly comprises a sound production assembly, a transmission mechanism and a hydraulic adjusting system; the sound production assembly comprises a plurality of iron pipes, and sound production holes are formed in the iron pipes; the plurality of iron pipes are annularly distributed in sequence according to the diameter size; the transmission mechanism comprises a knocking rod and can enable the knocking rod to knock the iron pipe; the hydraulic adjusting system comprises an oil cylinder and a fixing ring, and a round pipe connected with the fixing ring slides in the iron pipe, so that the round pipe is far away from or close to the sound production hole in the iron pipe; the mining audible and visual alarm solves the problem that a traditional mining audible and visual alarm cannot carry out distinguished early warning according to audible and visual signals with different intensities, and misjudgment is caused.

The utility model discloses a CO2 capture and storage injection monitoring device which comprises a bottom plate, the top of the bottom plate is fixedly connected with a storage box, the top of the bottom plate is fixedly connected with a frame, the top of the bottom plate is fixedly provided with a motor through bolts, the output end of the motor is fixedly connected with a threaded rod, and the top of the surface of the threaded rod is in transmission connection with a second gear. The surface of the second gear is engaged with a first gear, and the bottom of the first gear is fixedly connected with a second rotating rod. The motor drives the threaded rod to rotate, the threaded rod drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear drives the second rotating rod to rotate, the second rotating rod drives the rubber plate to rotate, and the rubber plate is in contact with the surface of the knocking plate and drives the knocking plate to rotate while rotating. When the knocking plate makes contact with the rubber plate, large knocking sound can be generated, an operator can be reminded through continuous knocking sound, and the monitoring efficiency is improved.

The utility model discloses a central water outlet high-pressure pump with a pressure maintaining device for a machine tool, which relates to the technical field of high-pressure pumps and comprises a high-pressure pump body, a pressure relief pipe and a rotating shaft extending to the outer side of the pressure relief pipe, an impeller is mounted on the portion, located on the outer side of the pressure relief pipe, of the rotating shaft, and an elastic connecting assembly is mounted at the top end of the rotating shaft. A clicker is mounted at a pipe orifice on one side, close to the rotating shaft, of the pressure relief pipe. Through the arrangement of the impeller, a worker can know the pressure relief condition by observing the rotating speed of the impeller, through the arrangement of the elastic connecting assembly and the clicker, when the pressure relief amount of the high-pressure pump body is out of a preset range, airflow enables the impeller to rotate at a high speed, and the rotating shaft drives the elastic connecting assembly to rotate at a high speed; the elastic connecting assembly extends under the action of overlarge centrifugal force, the elongated elastic connecting assembly knocks the clicker to make a sound and give a noise alarm in the rotating process, even if sensor equipment in the prior art breaks down, the elastic connecting assembly can be matched with the clicker to give an alarm, and the alarm effect is more stable and reliable.

The invention relates to the technical field of mutual inductor detection, and particularly discloses a current transformer fault alarm device, which comprises a current transformer body and an alarm, and is characterized in that when the current transformer body is abnormal, the current transformer body can shake, and a driving mechanism in the alarm can be driven to work under the shaking condition, so that the current transformer body is prevented from being damaged. The driving mechanism is used for driving the striking mechanism to strike the alarm bell, so that a sound is made to attract a worker, mechanical alarm can be realized through synchronous transmission of the driving mechanism and the striking mechanism, and misjudgment and other conditions in a strong electromagnetic environment can be avoided through mechanical alarm. Moreover, the work of the alarm is not affected by the temperature and humidity of the environment, and meanwhile, the later maintenance is facilitated, and the maintenance cost is reduced.

The invention relates to the technical field of vacuum ring main units, and provides an air-insulated high-voltage vacuum ring main unit which comprises a ring main unit body, the inner wall of the ring main unit body is fixedly connected with an air pressure sensor and a positioning seat, and the inner side of the positioning seat is rotatably connected with an air collecting pipe; the support frame is fixedly connected to one side of the ring main unit main body, one side of the support frame is fixedly connected with a concentration box, and one end of the concentration box is fixedly connected with a control panel; the gas guide assembly is arranged at the top end of the concentration box and used for being matched with the supporting frame to guide the SF gas out of the ring main unit body; and the warning assembly is assembled at the top end of the concentration box and used for warning nearby personnel, and the air guide assembly comprises an air guide fan. According to the technical scheme, the problems that in the prior art, when SF gas in the device leaks, due to the lack of effective treatment measures, it is difficult for surrounding operators to find the leakage in time, and accidents are extremely likely to happen are solved.

The invention belongs to the technical field of electrician instruments and meters, and particularly relates to a charging pile safety detection and alarm device which comprises a box body and a box cover, a detection device is installed in the box body, an interface seat is arranged on the detection device, an insertion groove is formed in the interface seat, a protection cover is installed on the interface seat, and the protection cover is provided with an alarm device. A temperature sensor is mounted in the interface seat; a locking groove is formed in the inner wall of the inserting groove, a guiding inclined face is arranged at the lower end in the locking groove, a clamping block is slidably installed in the locking groove, and a silica gel layer is arranged on the surface of the clamping block; an electromagnet is installed in the detection device, and the clamping block is connected to the electromagnet through an ejector rod. The arc-shaped rod is made of shape memory alloy, and a heat pipe is installed in the ejector rod. The device is simple in structure, and can give an alarm in time and automatically disconnect the charging gun and the interface seat when an abnormal condition occurs.

The utility model discloses an automatic alarm precipitation well protection device, which comprises a bottom frame, a solar panel, an alarm and a storage battery, a bottom plate is fixed above the bottom frame, a hollow column is fixed in the middle above the bottom plate, a top plate is fixed at the top of the hollow column, the solar panel is arranged above the top plate, and the alarm is arranged above the solar panel. An alarm is fixed to the middle of the top plate, mounting nails are mounted on the surface of the bottom plate, a connecting rod is arranged on the surface of the hollow column, a movable rod is connected to the surface of the connecting rod, a supporting plate is fixed to the end of the movable rod, a clamping groove is formed in the surface of the supporting plate, and fixing blocks are fixed to the two ends of the surface of the connecting rod. According to the dewatering well protection device with the automatic alarm function, the adjustable connecting rod and the movable rod can be used in cooperation with the supporting plate and the vertical plate, the device can conveniently support the inner walls of dewatering wells with different diameters, and the protection effect of the device on the dewatering wells is improved.

The invention discloses a nitrogen pressure adjusting device based on a mainboard control electromagnetic valve, and relates to the field of pipeline pressure adjustment. A nitrogen pressure adjusting device based on a mainboard control electromagnetic valve comprises the electromagnetic valve, a mainboard box for controlling the mainboard is installed on the electromagnetic valve, the air inlet end and the air outlet end of the electromagnetic valve are connected with an air inlet pipe and an air outlet pipe respectively, and the nitrogen pressure adjusting device further comprises pressure sensors fixedly connected to the air inlet pipe and the air outlet pipe respectively. The pressure sensor is used for detecting nitrogen pressure in the gas inlet pipe and the gas outlet pipe; the air inlet end of the pressure relief tank is communicated with the air inlet pipe; through the arrangement of the pressure relief tank, when a nitrogen conveying pipeline is shut down through the electromagnetic valve, redundant air pressure at the air inlet end can be adjusted, sudden pressure increase caused by the water hammer effect is reduced, the influence of the sudden pressure increase on a sealing piece is reduced, the service life of the sealing piece is effectively prolonged, and the safety of the sealing piece is improved. And long-time use is facilitated.

The utility model provides a substation high-voltage test safety protection device, and relates to the technical field of high-voltage test safety protection. Fixing bases are evenly and fixedly installed on the edge of the upper end of the fixing table, and the two ends of each fixing base are each provided with a row of connecting holes. All the fixed inner frames are mutually connected to form a layer of protection structure, high-voltage equipment can be directly isolated from the external environment, the firm structure can resist accidental collision, human climbing and the like, irrelevant personnel or objects are prevented from entering dangerous areas from the physical level, and the protection structure is a first firm barrier for guaranteeing the safety of the transformer substation and has good practicability. And then a layer of protection warning structure is formed on the outermost periphery of the high-voltage transformer substation by using the connecting net and the peripheral rods, so that the problem that two layers of protection structures need to be mounted on the periphery of the high-voltage transformer substation because safety protection is required during the test of the high-voltage transformer substation, otherwise, passers-by can easily get close to the high-voltage transformer substation to cause danger is solved.

The utility model discloses an anti-burnout junction box in a photovoltaic power generation system, which comprises a box body, the box body is made of flame-retardant materials, two wiring terminals are arranged in the box body, a diode is fixedly connected between the two wiring terminals, one end of each wiring terminal is fixedly connected with a cable, the side surface of the box body is provided with a raised box, and the raised box is fixedly connected with the two wiring terminals. A pulling sound device is arranged in the protruding box, and the cable is clamped in the pulling sound device. When the cable is excessively dragged, the dragging sound device generates vibration sound to remind installation personnel to pay attention to not causing connection loosening of the cable, so that the installation quality is ensured, and the burning risk increase caused by human factors is avoided.

The utility model discloses a bird-shaped doorbell which comprises a connecting seat, the top of the connecting seat is fixedly connected with a bird body, the top of the connecting seat is fixedly connected with two rubber columns, the top ends of the two rubber columns are jointly fixed with a metal cylinder, and a connecting frame is rotatably inserted between the inner walls of the two sides of the bird body through a rotating shaft. One end of a rotating shaft of the connecting frame is in key connection with a transmission gear, the top end of the connecting frame is fixedly connected with a connecting spring, and the top end of the connecting spring is fixed with a bird head located at the top of the bird body. According to the utility model, the metal ball at the mouth part of the bird head is knocked on the metal cylinder to realize the door knocking operation, so that the bell knocking operation can still be realized in case of power shortage, and then the other teeth on the sliding block are meshed with the transmission gear again, and the metal ball at the mouth part of the bird head is knocked on the metal cylinder again under the action of the transverse spring, so that the door knocking operation is realized. Therefore, the continuous door knocking action is realized, the door knocking effect is improved, and then the electronic doorbell can make different birds' sounds.

The application discloses a solar cell panel support shaking early warning device, and relates to the technical field of solar panel supports, which comprises a base, a supporting cylinder fixedly connected to the upper surface of the base, a motor fixedly connected between the inner walls of the base, a storage rack slidingly connected between the inner walls of the supporting cylinder, a screw rod rotatably connected to the bottom of the inner walls of the supporting cylinder, the output end of the motor being fixedly connected to the bottom end of the screw rod, the screw rod being threadedly connected with the bottom end of the storage rack, and U-shaped pressing rods being slidingly connected to the outer surface of the supporting cylinder at equal intervals. The device can reduce the overall height of the device by sliding the storage rack into the supporting cylinder, thereby reducing the overall gravity center of the device, making the device easier to keep balanced, and reducing the area of the device subjected to wind, the force arm of the device, the torque of the wind force acting on the device, and the influence of the wind force on the device, so that the shaking amplitude of the device is reduced.

The invention relates to the technical field of fire-fighting smoke sensing devices, and provides an intelligent fire-fighting smoke sensing device with a self-cleaning function, which can effectively promote smoke flow on the premise of ensuring the smoke detection effect, can improve the detection sensitivity while improving the smoke entering efficiency, and can effectively clean the smoke after the detection is completed. The smoke staying time in the rotary cylinder is short, sedimentation and gathering of smoke dust in the rotary cylinder can be greatly reduced, the practicability is improved, the use cleanliness is better, the fire detection module is installed in the base, the assembly structure comprises a conical shell and a double-hemisphere shell, and the conical shell is provided with a plurality of conical holes. The conical shell is fixedly connected to the bottom end of the base, the double-hemisphere shell is fixedly connected to the bottom end of the conical shell, the whirling smoke driving structure comprises a whirling cylinder, the whirling cylinder is rotationally connected into the conical shell, a plurality of labyrinth inward-extending frames are fixedly connected into the whirling cylinder, double spiral plates are fixedly connected into the whirling cylinder, and a wind chime driving assembly is installed in the double-hemisphere shell.

The utility model discloses a carbon inspection data acquisition device, which belongs to the technical field of carbon inspection data acquisition devices, and comprises a data acquisition module and a hinge, one side of the data acquisition module is provided with the hinge, the data acquisition module is internally provided with a protection assembly, the data acquisition module is internally provided with an alarm assembly, and the alarm assembly is connected with the hinge. The protection assembly comprises a protection plate, clamping plates are arranged on one side of the data acquisition module and one side of the protection plate, and a rubber frame is fixedly connected to the bottom surface of the protection plate; according to the utility model, through the arrangement of the protection assembly, through the design, the protection plate is used for protecting the display, the display is prevented from being damaged due to impact of external factors, the protection plate is fixed and opened conveniently through a sliding strip, a sliding plate and a clamping plate, and the sealing performance of the protection plate and the data acquisition module is improved through a rubber frame; therefore, the waterproof performance of the protection plate is improved.

The utility model relates to the technical field of cable supports, in particular to a cable support with a looseness warning function, which comprises a warning box fixedly mounted on the lower surface of a supporting rod, a mounting plate fixedly mounted on the inner side of the warning box, and a warning assembly fixedly mounted on the side wall of the mounting plate. A lever body is fixedly installed on the lower surface of the shaft sleeve, a limiting groove is formed in one end of the lever body, an iron ball is arranged on the inner surface of the limiting groove, a storage battery is fixedly installed on the side surface of the installation plate, a microswitch is arranged on the side surface of the storage battery, and a connecting wire is arranged on the upper surface of the storage battery. The support has the advantages that a good warning effect is achieved, compared with the mode that an elastic ball makes a sound on an arc-shaped metal sheet, good continuity is achieved, a worker can be reminded to fix the support in time when the support body inclines, and potential safety hazards are avoided.

The present invention relates to the field of motor load detection technology, specifically a brushless motor load detection device and a method for use, comprising a detection table, a mounting table fixedly provided on the detection table, a brushless motor mounted on the mounting table, a load testing machine fixedly provided on the detection table, and a fixed disk fixedly provided on the connecting shaft of the load testing machine. In this brushless motor load detection device and method for use, a mechanical loosening alarm protection mechanism adopts a mechanical whistle alarm system to monitor the state of the motor shaft in real time through a roller assembly. When abnormal looseness of the shaft is detected, the rotational motion of the roller drives the whistle hole to generate high-frequency airflow, emitting a clearly identifiable alarm sound. This purely mechanical alarm method does not rely on power supply, has extremely high reliability, and is particularly suitable for use in complex industrial environments. After the alarm is triggered, the operator can immediately take corresponding measures to effectively prevent equipment damage and safety accidents.

This invention discloses a silane gas delivery cabinet leakage detection device and method, belonging to the field of gas delivery cabinet safety protection. The silane gas delivery cabinet leakage detection device includes a cabinet body, inside which a gas cylinder is placed. An on / off valve is installed on the top of the gas cylinder, and a locking assembly for locking the gas cylinder is provided on the inner wall of the cabinet body. This invention, through the cooperation of the locking assembly, copper plate, reciprocating assembly, and exhaust assembly, promptly closes and locks the gas outlet at the top of the gas cylinder when a leak occurs inside the cabinet, preventing further gas leakage. Simultaneously, the power source generated by the operation of the locking assembly drives the reciprocating assembly to reciprocate and strike the copper plate, promptly alerting personnel to perform maintenance and inspection, reducing waiting time and improving work efficiency. At the same time, the ventilation opening at the exhaust assembly is opened to maintain air circulation, providing good protection for maintenance personnel.

The application relates to the technical field of building equipment, and discloses an automatic sizing robot for wall bricks, which is capable of moving along the surface of the wall bricks stably under the guidance of the directional wheels, and the wall bricks provide stable support for the robot when the robot moves along the wall bricks with the help of the directional wheels, the symmetrically distributed directional wheels form reliable guiding constraints with the side edges of the wall bricks, and the robot can only move along the predetermined track of the wall bricks, so that the robot position and the wall bricks are accurately aligned during the sizing process, the robot movement deviation phenomenon is effectively eliminated, and the accuracy and stability of the sizing operation are improved.

To effectively address the diversification of hidden camera functions, better protect user privacy, and provide a portable, multi-functional detection device that is easy to carry, easy to use, relatively inexpensive, and advantageous for widespread adoption and use. [Solution] The device includes a housing 1, a handle 11 provided on the housing, a control circuit board 2 provided inside the housing, an infrared detector 3 and a red light generator provided on the housing, both of which are electrically connected to the control circuit board, the infrared detector is used to detect red light emitted from the camera, the red light generator is used to emit red light toward the camera, and a signal detection module 5 is further provided on the control circuit board, which is used to detect whether or not a communication signal is present in the surroundings.

This invention relates to the field of audible warning technology, and more specifically, to a safety warning device for trackless rubber-tired vehicles. The device includes a housing fixedly installed on the trackless rubber-tired vehicle, and a pneumatic mechanism is disposed within the housing. The pneumatic mechanism consists of a cylinder, a first piston, and a telescopic rod. The first piston is movably disposed inside the cylinder, and its top end is fixedly connected to one end of the telescopic rod. The telescopic rod passes through the top end of the cylinder and extends to its exterior. The circumferential sidewall of the telescopic rod has linearly arranged toothed grooves along the axial direction, and one side of the telescopic rod has transmission teeth that mesh with the toothed grooves. A speed ratio mechanism and a delay mechanism are respectively disposed on both sides of the transmission teeth, and the transmission teeth, speed ratio mechanism, and delay mechanism are coaxially arranged. The transmission end of the speed ratio mechanism is connected to a pneumatic warning mechanism. This invention solves the problem that warning devices for trackless rubber-tired vehicles rely on electric power or require manual operation when temporarily stopped in mines.

The utility model discloses a multifunctional brake pedal structure of an electric sickbed, which relates to the technical field of electric sickbeds and comprises a rotating shaft and a pedal, a loudspeaker component and a battery component are arranged in the pedal, a switch is embedded in the rear end face of the pedal, and the loudspeaker component and the switch are both electrically connected with the battery component. The front end face of the pedal is fixedly connected with a first inserting block and a second inserting block, the outer wall of the rotating shaft is fixedly sleeved with a shaft sleeve, the outer wall of one side of the shaft sleeve is fixedly connected with a first socket and a second socket, and the pedal is detachably connected with the first socket and the second socket in the mode that the first inserting block and the second inserting block are matched with the first socket and the second socket. According to the hospital bed, the horn assembly and the switch are arranged, the horn can be turned on to play languages only by touching the switch through tiptoes, front personnel are effectively reminded to pay attention to avoiding, compared with traditional shouting, the better transmission effect is achieved, the risk of collision in the moving process of the hospital bed is greatly reduced, and the safety of patients and medical staff is guaranteed.

The invention relates to the technical field of anchor rods, in particular to a self-expanding early-warning anchor rod. Comprising a rod body, an expansion mechanism and an early warning mechanism, the expansion mechanism comprises a shell, a water absorption cavity, an outer water absorption sponge, an inner water absorption sponge, a first push rod, a second push rod, a distance ring, a first expansion device and a second expansion device, and the water absorption cavity, the outer water absorption sponge, the inner water absorption sponge, the first push rod, the second push rod, the distance ring, the first expansion device and the second expansion device are all arranged in the shell; the two ends of the second push rod are connected with the inner water absorption sponge and the second expansion device respectively, the distance ring is provided with a communicating hole and a baffle ring connected with the first push rod, the early warning mechanism comprises a ringing device connected with the first push rod and a buzzing device connected with the second push rod, and the second expansion device is provided with a locking device. The expansion strength can be automatically adjusted according to the water content of the soil layer, a reliable early warning function and an intelligent drainage mechanism are achieved, and the functions of water content sensing, graded expansion, dual early warning and automatic drainage are achieved through the double-layer water absorption structure.

The present invention belongs to the field of medical bracelets, and specifically is a wearable bracelet for medical assistance, comprising a sub-ring and a main ring, wherein a monitoring module and a control module are fixedly connected to the middle of the sub-ring, wherein the monitoring module is used to monitor the wearer's physical values, and the main ring is arranged in a ring shape, and a telescopic component is arranged on the outside of the main ring, wherein the telescopic component is used to extend outward and can be retracted after use, and the control module is used to control the telescopic component of the main ring. When the patient needs to be turned over, it is only necessary to put one hand of the patient between the patient's back and the bed, and then activate the telescopic component to push out, so that the patient's back can be pushed up by a distance of twenty centimeters on one side, so that the patient is in a semi-tilted state. At this time, the caregiver can easily push on the patient's back to let the patient turn sideways. At the same time, for patients whose muscle weakness is not very serious, the patient can put his arm behind his back and activate the telescopic component to assist the patient in the turning process.