32results about How to "Avoid causing harm" patented technology

The invention discloses a catalyst system for preparing vinyl chloride by hydrochlorinating acetylene, and preparation and application thereof. The catalyst system comprises a catalyst carrier and a catalyst, wherein the catalyst carrier is pyridine ionic liquid, and the catalyst is one or any combination of more than two of tin, palladium, gold, copper, manganese, bismuth, mercury and rhodium. The preparation method for the catalyst system comprises a step of dissolving the catalyst in the catalyst carrier. Acetylene gas and hydrogen chloride gas are mixed and then reacted in the presence of the catalyst system. The preparation process realizes a liquid phase reaction for preparing the vinyl chloride by hydrochlorinating the acetylene, avoids the loss of the catalyst system, is more environment-friendly and safer, and improves the conversion rate of the acetylene and the selectivity of the vinyl chloride.

The invention discloses a method for measuring and acquiring body image data of a dairy cow in combination with multimedia image shooting and computer processing. In the method, the problem of body data acquisition of a dairy cow is solved by an image measuring method without contacting a dairy cow individual so that the stress reaction of the dairy cow to a stranger is avoided and damages of the dairy cow to measuring personnel can be prevented. Simultaneously, practical measurement of the image method is completed off line so that the time of a data acquisition process is much shorter than that of the conventional common manual measuring method. Moreover, the dairy cow moves little in a data acquisition period so that effect on a measuring result is small. The subjective factor of the conventional manual measurement has large effect on the measuring result while the image method is more objective and has higher data repeatability and correctness. Data obtained by the image method can be directly saved in a digital system in the form of database so that error caused by manual secondary input is avoided and contribution to digital management of a dairy farm is made.

The invention discloses a liftable medical push cabinet, comprising a bottom box, the top of the bottom box is movably connected with a top box, the back of the inner wall of the bottom box is provided with a mechanical groove, and the bottom of the mechanical groove is provided with a The top of the bottom box is provided with a lift slot corresponding to the position of the top box. The bottom of the placement slot is fixedly connected with an electric telescopic rod, and the tops on both sides of the electric telescopic rod are fixedly connected with a fixed rod. The end of the rod far away from the electric telescopic rod is movably connected with a connecting rod, and the end of the connecting rod far away from the fixed rod is movably connected with a rotating rod. One side is fixedly connected with a transmission shaft, both sides of the bottom of the mechanical tank are fixedly connected with a fixed column, and the top of the fixed column is fixedly connected with a support block. When the user of the present invention is pushing, the sight line of the user will not be blocked, and the patient or the wall will not be hit, so as to avoid causing harm.

The invention relates to a cutting device for sheet metal processing. The cutting device comprises a lathe body, a walking frame and a laser cutting head, the lathe body is provided with a clamping device and a flow guide hole, a water circulation mechanism is arranged in the lathe body, the outer periphery of the laser cutting head is provided with a protective mechanism, the protective mechanismincludes a clamp, a hollow ring and a plurality of water spray components, each water spray component include a connection seat, a water curtain nozzle and a connection pipe, the water circulation mechanism includes a filter screen, a water tank, a circulation pump and a water supply joint, and the clamping device includes a jacking air cylinder, a clamping plate and a plurality of pressing components. In the cutting device for sheet metal processing, a water curtain can be used for cooling and intercepting high-temperature sparks to prevent the sparks from harming operators and prevent hidden fire hazards; collection of waste debris such as the sparks is simple and convenient to realize, and the difficulty of equipment cleaning is reduced; water recycling is realized, and water resourcesand processing cost are saved; and sheet metal parts in different shapes and sizes can be fixed, the application scope is wide, and the fixing effect is good.

The invention provides a battery charging and discharging current control method and a method for using the battery charging and discharging current control method to establish a BMS (Battery Management System) model, and belongs to the technical field of electric automobile charging and discharging. The control method comprises the following steps: monitoring actual battery charging/discharging current value of a battery; if the battery charging/discharging current value is smaller than or equal to a first current value (ichg_cont_A, idischg_cont_A) of the battery under current working condition, carrying out regressive calculation on battery charging/discharging ability value, and if the battery charging/discharging current value is greater than the first current value of the battery under the current working condition and is smaller than a second current value (ichg_peak_A, idischg_peak_A), carrying out accumulative calculation on the battery charging/discharging ability value; and judging whether the battery charging/discharging ability value is greater than or equal to the maximum allowable value, if yes, limiting the battery charging/discharging current value to be smaller than or equal to the first current value. The control method can protect the battery and can also give full play to the battery operating ability, and the BMS model established by using the method provided by the invention can accurately simulate the battery charging/discharging ability.

The invention relates to a non-pneumatic laryngeal mask with an imbibition function. The existing laryngeal mask cannot discharge mucous secretion on the laryngeal part of pharynx in time, and a vent hole of the laryngeal mask is likely to block by epiglottis. The non-pneumatic laryngeal mask with the imbibition function is characterized by also comprising a connector and a flexible rubber capsule, wherein an inflating cavity is formed between the flexible rubber capsule and a mask body, the mask body is provided with a plurality of suction holes, a ventilation pipe is internally provided with a ventilation passage, a feed drain passage and a suction passage, the ventilation passage is communicated with the inflating cavity, the feed drain passage penetrates through the ventilation pipe and the cover body to be connected with a feed hole on the front end of the mask body, the suction hole is communicated with the suction passage, the connector is provided with an inflating opening, a feed opening and a suction opening, the inflating opening is communicated with the ventilation passage, the feed opening is communicated with the feed drain passage, and the suction opening is communicated with the suction passage. The non-pneumatic laryngeal mask is simple in structure, reasonable in design and good in sealing performance; the mucus and coagula on the laryngeal part of pharynx can be discharged in time, the vent hole is unlikely to block, and the injury on a patient is little.

The invention discloses a children's tricycle and its front wheel. The front wheel includes: a front wheel body; a front fork, which includes a first arm, a second arm and a front fork connecting portion connecting the first arm and the second arm, wherein the first The support arm and the second support arm are respectively fixedly connected to the two outer surfaces of the front wheel body; the wheel center movable seat is located inside the front wheel body and is connected to the front wheel body in rotation; the wheel shaft passes through the The front wheel body and the wheel center movable seat; the wheel shaft driving seat, which is fixedly connected with the wheel shaft and passed through by the wheel shaft; the clutch, which covers the wheel shaft driving seat and cooperates with the wheel center movable seat and two pedals, which are respectively fixedly connected to the two ends of the axle. Beneficial effects: the clutch device is designed so that the pedals and the drive shaft do not rotate together with the front wheels when the adult pushes the tricycle; the possibility of causing injury to children's feet when the adult pushes the tricycle is avoided.

The invention discloses a cell sorting system and method. The system comprises a signal generator, a power amplifier, a relay and an ultrasonic transducer device, wherein the signal generator is connected with the power amplifier, the power amplifier is connected with the relay, and the relay is connected with the ultrasonic transducer device; the signal generator and the power amplifier are used for generating ultrasonic signals of target-frequency target acoustic energy, and the relay is used for controlling on-off state of the ultrasonic signals; the ultrasonic transducer device comprises an ultrasonic transducer, an ultrasonic transducer cover and a phonon crystal plate, the ultrasonic transducer is arranged at the top in the ultrasonic transducer cover, the phonon crystal plate is arranged at the bottom of the ultrasonic transducer cover, the ultrasonic transducer is used for receiving the ultrasonic signals, the phonon crystal plate is used for generating target radiation force according to the ultrasonic signals, and the target radiation force is used for attracting cells with a target size. By the adoption of the system or method, the sorting efficiency of cell sorting can be improved, and damage to the cells can be avoided.

The invention discloses a feeding device for sensor shell machining, and belongs to the technical field of sensor machining. The feeding device comprises a workbench, a material shifting mechanism, a specification detection mechanism, a deflection mechanism, a weight detection mechanism and a material distribution mechanism. The material shifting mechanism is mounted at the top of the workbench, the specification detection mechanism is installed on the top of the workbench and located beside the material shifting mechanism, the deflection mechanism is installed on the top of the workbench and located at the specification detection mechanism, the weight detection mechanism is installed on the top of the workbench, and the material distribution mechanism is installed on the weight detection mechanism. A mechanical hand is arranged at the position of the specification detection mechanism and the weight detection mechanism. According to the feeding device for sensor shell machining, in the feeding process, the specifications of sensor shells are detected, the sensor shells which do not conform to the specifications are separated from the sensor shells which conform to the specifications, and product mixing is avoided.

The invention discloses a pressure-adjustable grinding jig comprising a box body (1). The inner wall of the left side of the box body (1) is provided with a sliding table fixing seat (6) and a springfixing seat (4), a sliding table (5) moving up and down is arranged on the sliding table fixing seat (6), a motor (25) is connected to the sliding table (5), the rear portion of the motor (25) is connected with the lower end of an adjustment rod (3), the adjustment rod (3) ) passes through the spring fixing seat (4), the adjustment rod (3) is provided with a stopping portion (2), the adjustment rod (3) is sleeved with a spring (24), a sliding seat (22) is located at the exterior of the left side wall of the box body (1), the left side wall of the box body (1) is provided with a notch for sliding of an interlocking rod (23), a rotating shaft of the motor (25) is connected with a grinding sheet (9), the bottom surface of the box body (1) is provided with a sliding plate (8), the sliding plate (8) is provided with a groove (10) for containing a product (14). The pressure-adjustable grinding jig adopts a mechanical grinding manner, efficiency is high, and dust or iron filings can be collected.

The invention discloses a safety speed reducing device of an inclined elevator. The inclined elevator comprises a car body; the safety speed reducing device comprises a parachute box fixed at the middle part of the side, facing the upward moving direction of a pair of inclined guide rails, of the car body, a box door opening mechanism arranged in a parachute box cavity and hinged to a box door, a set of springs positioned in the parachute box cavity and supported on the cavity wall of the side, opposite to a cavity opening, of the parachute box cavity by one ends and supported on the box door opening mechanism by the other ends, a locking rod control mechanism fixed on the cavity wall of the side, opposite to the cavity opening, of the parachute box cavity and corresponding to the box door opening mechanism, and a parachute arranged between the box door opening mechanism and the box door in a folding state; a parachute control rope of the parachute is wound on the cavity wall of the side, opposite to the cavity opening, of the parachute box cavity; and the cavity opening faces the upward moving direction of the pair of guide rails. The parachute can be smoothly released; the automatic immediate release of the parachute is guaranteed; the misoperation is prevented; and the management work intensity is relieved.

The invention discloses a radio frequency chip fan-out system-level packaging process comprising the following steps of (101) carrier processing, (102) base processing, and (103) packaging. The present invention provides the radio frequency chip fan-out system-level packaging process, and the damage to a chip by secondary processing is avoided.

The invention relates to a wire-arranging method for a motor stator winding. The wire-arranging method includes steps: the winding of a primary winding: during the winding of the primary winding, a main over-bridge line passes for a predetermined length along the excircle surface of a stator core and then enters a tooth portion of the stator core for the winding of the next primary winding so that a first filling gap is reserved between the main over-bridge line and a secondary winding; and the insulation of primary and secondary windings: the main over-bridge line is arranged at an end part of the stator core, and the first filling gap is filled with an insulation part so that the main over-bridge line is insulated from the secondary winding. According to the wire-arranging method, the wire-arranging efficiency of the stator winding is greatly improved, tools such as blades and bamboo sticks are not needed, the main over-bridge line does not need to be selected, and the condition of the damage to stator winding coils is effectively avoided.

The invention discloses a chemical reaction cleaning pond for a chemical cleaning machine of a vehicle condenser. The chemical reaction cleaning pond for the chemical cleaning machine of the vehicle condenser comprises a liquid storage tank, a water inlet device, a chemical agent conveying device, a servo feeding and shifting manipulator and a frame type bracket, wherein the water inlet device and the chemical agent conveying device are arranged on the front and back sides of the liquid storage tank respectively; the frame type bracket fixed on the plant ground is arranged above the liquid storage tank; the servo feeding and shifting manipulator is arranged on the frame type bracket. Through the way, the vehicle condenser can be chemically cleaned effectively, oil stains in a pipe are removed, harm to the respiratory tracts of workers caused by a chemical cleaning agent is prevented, and the cleaning efficiency is increased.

The invention relates to the technical field of medical auxiliary instruments, in particular to a child airway mucous plug safe removing assembly which comprises an operation handle, a main handle, a control line, a working line and a sleeve. The working components comprise a component a provided with an umbrella-shaped cleaning structure, a component b provided with a net type clamping mechanism, a component c provided with a scraping mechanism and a component d provided with a cleaning structure with a variable diameter; different working assemblies are selected according to different children, different physiological conditions of airways, different positions of the mucus plugs and types of the mucus plugs, doctors can conveniently clear the mucus plugs under different conditions, the mucus plug clearing effect can be improved, and the problem that the mucus plugs are prone to remaining after being cleared is solved. Various working assemblies are subjected to round corner treatment or safety balls are added, it is guaranteed that the inner wall of the airway of the child cannot be hurt in the using process, and good practicability, effectiveness and safety are achieved.

The invention relates to the related field of detectors, in particular to earthquake rescue equipment with a life detection function. The earthquake rescue equipment with the life detection function comprises a box body and a first cavity fixedly arranged in the box body, a life detector is fixedly mounted on the outer surface of the left end wall of the box body, chain wheel shafts are rotatablymounted on the lower end wall of the first cavity in a bilateral symmetry manner, chain wheels are fixedly mounted on the outer surfaces of the tail ends of the front side and the rear side of each chain wheel shaft, and the chain wheels are connected through a crawler belt. According to the earthquake rescue equipment with the life detection function, life can be detected through the detector, sothat the rescue direction is determined, obstacles on a rescue advancing road can be removed, the rescue equipment can enter for rescue conveniently, a rescue channel can be created while advancing,rescue is facilitated, injury to rescue personnel and rescued personnel during collapse again can be prevented, and the rescue personnel and the rescued personnel are protected through a partition plate.

The invention relates to a safety protection device of a lifting belt or a traction belt and a using method of the safety protection device. The safety protection device is arranged in the middle of the lifting belt or the traction belt, and the safety protection device comprises two lead blocks, a high-strength elastic belt and a plurality of bolts; the two ends of the high-strength elastic belt are fixedly connected with the lead blocks respectively, and the corresponding parts of the lifting belt/traction belt are clamped and fixed through the lead blocks and bolts; and after being connected with the lifting belt/traction belt, the high-strength elastic belt is in a natural stretching state. The elastic protection device is arranged in the middle of the lifting belt or the traction belt, so that the lifting belt or the traction belt can be effectively prevented from being bounced off due to breakage or unhooking on the premise of not influencing normal work of the lifting belt or the traction belt, and injury to constructors or damage to equipment is avoided.

The invention discloses a protective element with a heat energy guiding function. The element comprises a main body which is electrically connected with a first lead electrode and a second lead electrode. The main body is coated by using a packaging material. A heat energy guiding part is arranged on the main body. The heat energy guiding part is a continuous lead wire with one end arranged on the first lead electrode and the other end extending outwards and penetrating to the outer side of the packaging material. With the structure, with the heat energy guiding part, hear energy can be conducted into or out of the main body with a thermal conduction manner. Therefore, the failure of timely perception when electronic components fail due to overloading can be avoided, and harm can be prevented.

The invention discloses a building fire-fighting robot. The robot involves a building main body, stroke grooves are formed in the peripheral surfaces of the building main body, a water storage tank isfixedly connected to the top of the building main body, and fire-fighting water pipes fixedly communicate with the peripheral surfaces of the water storage tank. According to the building fire-fighting robot, protective frames are fixedly connected to the peripheral surfaces of the top of the building main body, moving devices are arranged on the inner walls of the stroke grooves, and the movingdevices comprise robot mounting blocks, so that the robot has the characteristics that when a fire suddenly breaks out, personnel can be quickly evacuated, and through a property management system andby turning on a program control switch, the robot is powered on to work, the robot is controlled to move to a fire-catching point, the robot drives a water pipe to move when moving, the robot is operated to crush glass of a fire-catching resident, the fire-fighting water pipe is opened to spray water to extinguish fire, the fire behavior can be effectively controlled to provide the rescue time for firemen, and the harm caused by self-extinguishing of the resident is avoided.

The invention discloses a biosafety cabinet with external scanning equipment. The biosafety cabinet comprises a cabinet body, an operation area, a glass door, a monitoring camera and the external scanning equipment. The external scanning equipment is arranged on the left side and the right side of the cabinet body. The external scanning equipment is arranged outside the operation area and the glass door; decorative plates are arranged on front panels on the left side and the right side of the cabinet body; the external scanning equipment is installed on the decorative plates on the left side and the right side of the cabinet body; the external scanning equipment comprises a scanner and a display screen, and the external scanning equipment is connected with an electrical circuit; circuit boards are fixedly arranged on the front panels on the two sides of the cabinet body; and the electrical circuit is connected with the circuit boards. The invention relates to the technical field of biosafety cabinets, in particular to the biosafety cabinet with the external scanning equipment. The operation space of the biosafety cabinet is not occupied, the cabinet body; and the left and right decorative plates of the cabinet body and the external scanning equipment are all detachably connected, so that the biosafety cabinet is attractive and convenient to operate.