33results about How to "Play a role in safety" patented technology

The invention discloses a fireproof material and a fireproof module and a fireproof board made of the material. It includes raw vermiculite and mainly includes the following components, and the parts by weight of each component are: 1 to 40 parts of raw vermiculite; 50-90 parts of cooked vermiculite; 15-25 parts of binder; 2 parts or less of graphite; the preferred amount of each component is: 10-20 parts of raw vermiculite; 60-80 parts of cooked vermiculite; 20 parts of binder parts; graphite is less than or equal to 1 part. The fire-blocking module and the fire-proof board are made of the above-mentioned fire-proof materials mixed and pressed. Utilizing the characteristics of thermal expansion of raw vermiculite, raw vermiculite is used instead of expanded graphite, which is a safe and effective fireproof material. It can be applied to various fireproof materials, and is especially suitable for fireproof modules, fireproof modules, firewalls, fireproof boards and the like made of fireproof materials.

An intercity electric multiple unit (EMU) power bogie relates to the technical field of EMU bogies. The intercity EMU power bogie comprises a frame, two wheel set and axle box assemblies, four primary suspension assemblies, a secondary suspension assembly, a traction assembly, two driving device assemblies, four basic braking device assemblies, and shaft-end equipment. The gear box of the power bogie is suspended in a C-shaped bracket structure, which has the advantages of small coupling displacement and higher installation reliability compared with the hanger rod structure of the previous gear box. The bogie and the train body are connected by a connection sleeper beam, the train body and the bogie can be separated quickly and conveniently in application and maintenance, and modular design of the bogie is realized. The primary suspension devices are each provided with a primary stop pin, and the primary stop pins can support the train body and achieve a safety protection effect when steel springs are broken. The wheel set and axle box assemblies are provided with anti-off plates which can prevent an axle box swivel arm from falling off when axle box swivel arm installing bolts are loosened.

The invention provides a combined cylinder valve, and belongs to a cylinder valve. The combined cylinder valve comprises a main valve body. The right end of the main valve body is used for being in threaded connection with an air cylinder. A main channel and an air outlet channel are arranged on the main valve body. A filter is connected at the right end of the main channel. The right end of the main channel is communicated with the air cylinder through the filter. A check valve is connected on the main valve body at the left end of the main channel. A pressure reducing valve with a switch function is arranged on the main valve body between the main channel and the air outlet channel. A pipe joint is connected on the exit of the air outlet channel. A joint channel on the pipe joint is communicated with the air outlet channel. A safety valve is arranged on the pipe joint. A pressure gauge is connected on the main valve body and communicated with the main channel through a side channel. The combined cylinder valve has the advantages that switching of air inflation or outward air delivery can be realized only by pulling a handle, inserting a dowel or pulling up the dowel by people, so that troubles in demounting and mounting of the pressure reducing valve are avoided, and great convenience is brought to people to operate.

The invention discloses an infusion tube liquid flow rate detection system and a detection method thereof. The system comprises an infusion tube, wherein a wave transmitter and a wave frequency detector are respectively arranged on two sides of the infusion tube; the wave frequency detector is used for receiving and calculating the frequency of the wave transmitter; both the wave transmitter and the wave frequency detector are connected with a controller; the controller is connected with a frequency comparison operator used for comparing and calculating the transmitted wave frequency of the wave transmitter and the received wave frequency of the wave frequency detector and an infusion tube valve used for turning off the infusion tube; the frequency comparison operator judges whether liquid exists in the infusion tube and whether the liquid flows and calculates the liquid flow rate by comparing the transmitted wave frequency with the received wave frequency; the controller judges whether the liquid flow rate in the infusion rate is regulated by controlling an infusion tube valve according to the detection result of the frequency comparison operator.

The invention discloses a tire burst preventive safety mechanism for an automobile. A support ring of the tire burst preventive safety mechanism is mounted on the annular outer surface of a wheel rim,is at least provided with a notch and is broken at the notch, a connecting component is arranged at the notch of the support ring and is used for being connected with the support ring, a plurality ofpendulum hammer components are arranged on the outer periphery of the support ring, an antiskid ring or a rubber ring is arranged on the inner wall of the support ring, second openings are formed inthe antiskid ring or the rubber ring, and 'V'-shaped tongue pieces can be stored in the second openings via first openings. The tire burst preventive safety mechanism has the advantages that a supportring body is connected to the surface of the wheel rim to form the support ring, the support ring is provided with the multiple pendulum hammer components, the pendulum hammer components can swing out under the effect of centrifugal force when a tire is in dynamic balance or the travel speeds of the automobile are higher than 30 km / H, the tire can be effectively safely supported after being burst, the inner side edge of the tire can be supported by pendulum hammers at the moment, the tire can be positioned on the outer periphery of the wheel rim under the control when burst and is still in contact with pavements, accordingly, the directions can be guaranteed against getting out of control, and safety effects can be realized.

The invention discloses a remotely controlled fingerprint combination lock based on the Internet of Things, which comprises a facial recognition unit, a fingerprint recognition unit, a communication module, a camera unit, a two-dimensional code display module, and a user control module connected to a liquid screen control panel; an unlocking person uploads the facial features or fingerprint features or whole body features of the unlocking person by means of the facial recognition unit, the fingerprint recognition unit or the camera unit and the communication module; a householder control module, which is arranged on a mobile terminal, is used for controlling the reception of unlocking request information and judging whether the unlocking person is a specific person, and moreover, further comprised inside are an unlocking person information module and an unlocking two-dimensional code generation module; the unlocking two-dimensional code generation module generates an unlocking two-dimensional code according to the facial features or fingerprint features or whole body features uploaded by the unlocking person or acquired from an original picture of the householder; and the two-dimensional code display module displays the unlocking two-dimensional code for the unlocking person to scan. When the lock is in use, a key does not need to be carried, and only a two-dimensional code needs to be scanned.

The invention provides complete power-frequency oil-gas partial discharge-free test transformer equipment and relates to the field of manufacturing of complete transformer equipment for testing a gas insulated switchgear (GIS) high-voltage switch and a disc insulator. The equipment comprises a transformer, a high-voltage isolation impedor, a high-accuracy voltage measuring device, a square wave measuring device, a coupling capacitor and a capacitive voltage divider. The output end of the transformer is coupled with a square wave injection device; the output end of the square wave injection device is connected with the input end of the high-voltage isolation impedor; the output end of the high-voltage isolation impedor is connected with the input end of the coupling capacitor; the output end of the coupling capacitor is connected with the capacitive voltage divider and the high-accuracy voltage measuring device; the output end of the capacitive voltage divider is provided with a measuring port; and the square wave measuring device, the high-voltage isolation impedor, the high-accuracy voltage measuring device, the coupling capacitor and the capacitive voltage divider are arranged in sealed pipelines filled with SF6 gas respectively. The device has the advantages of long rated running time, small floor area and convenient operation.

The invention relates to the technical field of capacitor installation equipment, and particularly relates to a waterproof capacitor installation device. The device comprises an elastic half-cylindrical arc chucking surface and clamping surfaces at two edges of the arc chucking surface in the axial direction, an assembly opening is formed between the two clamping surfaces, an assembly edge is formed on the side of each of the two clamping surfaces far from the arc chucking surface, an annular capacitor end cover protrusion limiting portion is formed on the inner surface of the arc chucking surface, the annular capacitor end cover protrusion limiting portion is coaxial with the arc chucking surface, one end of the arc chucking surface is a waterproof portion, and the capacitor end cover protrusion limiting portion presses against the waterproof portion. By adopting the device, a capacitor can be stably fixed; moreover, the waterproof portion can effectively shield and protect a capacitor connection terminal, and can prevent condensed water of a tubing system above from dropping and entering the connection terminal to cause short circuit and burning after the capacitor is assembled.

The invention discloses a natural gas dryer. The natural gas dryer comprises a first inlet, a fusible plug, an outlet, a second inlet, a casing, a drying agent, an extraction pipe and porcelain balls, wherein the first inlet and the second inlet are located on two horizontal sides of the top of the dryer, the outlet is located in the center of the top of the dryer, the fusible plug is arranged at the upper end of the extraction pipe, and the porcelain balls cover the upper layer of the drying agent. The natural gas dryer is reasonable in design, simple in structure, safe, portable and capable of realizing repeated drying.

The invention provides a self-adjusting picking ladder. Fixing plates are in threaded connection with the bottoms of ladder pillars; a fixing belt is mounted at the top of the ladder pillar; a sliding groove is formed in each ladder pillar in the length direction; a sliding block is mounted in each sliding groove; each pedal includes two independent sub-pedals; one end of each sub-pedal is fixed onto the ladder pillar, and the free ends of the two sub-pedals are hinged to each other with a vertical rotating shaft. As the fixing plates are in threaded connection with the bottoms of the ladder pillars, the distance between each fixing plate and the bottom of the corresponding ladder pillar can be adjusted by rotating the fixing plate, and a leveling function can be achieved when the picking ladder is used on uneven ground; in addition, the area of each fixing plate is large, and the contact area between the fixing plate and the ground is enlarged, so that the entire picking ladder is relatively stable; the fixing belt can be winded on a tree trunk, so that the entire top of the picking ladder can be fixed onto the tree trunk; through the arrangement of the rotating shafts at the hinge parts on the pedals, the sub-pedals can be rotated, and a certain angle can be formed between the two sub-pedals.

The invention relates to a methane gas recycling system and control method. According to the system, interlocking control is set over starting and stopping of a compressing device, the pressure of a methane storage tank and the pressure and the temperature of an inlet of the compressing device; and meanwhile it is set that the throttling pressure of a throttle valve is higher than the pressure of the inlet of the compressing device, it is accordingly guaranteed that the compressing device works within the normal pressure range and the normal temperature range to prevent pressure building of the compressing device, and safe and stable running of the compressing device is guaranteed.

The invention discloses an anti-peep overturn type password input device. A keyboard base is mounted on a base and connected with the base through a hinge; movable press keys are mounted on the reverse side of the keyboard base; a front panel is fixed on the front side of the keyboard base through a fixing bolt; fixed keys are mounted on the front panel; and the positions of symbolic keys of the fixed keys on the front side of the keyboard base are in one-to-one correspondence to those of symbolic keys of the movable keys on the reverse side of the keyboard base. Besides, the lateral surface of one side of the base is empty, so that a hand can extend into the base with the palm upward and operate passwords by fingers through pressing the keys reversely. According to the anti-peep overturn type password input device, input buttons are mounted on the reverse side of the input device, the fingers press the keys reversely, corresponding number press keys are mounted, and the numbers correspond to numbers in the corresponding positions of the reverse side; during use, all that is needed is to extend the palm upwards into the password input device, the buttons are pressed upwards by the fingers, then the 7passwords are input without being seen by others, and the safety effect is achieved.

The invention relates to the field of indoor warning, in particular to a door stopper warning device. The door stopper warning device comprises a door stopper seat and a warner, wherein an inclined slope is arranged at the front side of the door stopper seat, a connecting part is arranged at the rear part of the door stopper seat and rotationally provided with the warner, the warnere comprises a casing, a circuit board, a battery, a loudspeaker, a motion switch and a power switch are arranged in the casing, an alarm circuit and a receiving circuit are arranged on the circuit board, the loudspeaker is connected with the alarm circuit, the alarm circuit and the receiving circuit are connected with the battery through the power switch, and the warner rotates to trigger the motion switch so asto realize the warning effect. The door stopper warning device has beneficial effects as follows: the structure is novel, the design is ingenious and simple, the door stopper seat effectively prevents the door from being opened easily from the outside, the alarm warning can be triggered by door opening, people inside can have time for the emergency situation, and the device plays a role of safety.

The present invention discloses a method for passing an aluminum bus through a firewall in an aluminium electrolysis workshop and a structure. Firstly, epoxy resin glass cloth lamination plates 4 are used to block the inner and outer sides of a firewall 1, then a fireproof plate 5 is used to block the circle of a wire through hole 2, a bounding walls are built at the outer sides of the wire through hole 2 for enclosure, the walls are filled with sands, and the walls are covered by a reinforced concrete movable cover plate 8. The structure has good waterproof and insulating performance in high temperature and high wet environments, and a double-layer fireproof blocking effect is used to be better than a single-layer fireproof blocking effect. The bounding walls and cover plate structure are used, the later cover opening for maintenance is facilitated, and the effects of shielding rain and protecting people who passes the structure are achieved.

A traditional Chinese medicinal composition used for alleviating fatigue, deepening sleep, focusing attention and improving memory is developed to cover shortages in the prior art. A Fructus Citri Sarcodactylis, white chrysanthemum and ginseng composition is prepared from, by weight, 30-50 parts of ginseng adopted as a main medicine, 20-30 parts of white chrysanthemum used for calming liver and reducing internal heat and 20-30 parts of Fructus Citri Sarcodactylis used for coursing liver, rectifying qi and relieving depression to realize difficult formation of side effects of ginseng in the stomach and intestine. The ginseng, the white chrysanthemum and Fructus Citri Sarcodactylis form the small composition for supplementing primordial qi, so the composition keeps the qi tonifying effect of ginseng and avoids the untoward effects of ginseng in order to play a role in safe qi tonifying.

The invention relates to vehicle colored spectacles with functions of shallowly shading the sunlight, shading the sunlight and resisting to the hard light. The vehicle colored spectacles are characterized in that a large colored lens is designed; the large colored lens is assembled in a spectacle frame matched with the large colored lens; the spectacle frame is connected with one end of a supporting body which can be fixed and can move; and the other end of the supporting body which can be fixed and can move is connected with a vehicle cab. When the vehicle colored spectacles are in use, the large colored lens is moved to the position in front of eyes of a driver; when the vehicle colored spectacles are not in use, the large colored lens is arranged at the position where the driver is not stopped from driving a vehicle; when being used at night, the vehicle colored spectacles can resist to radiation of a high-beam light of an opposite vehicle in the meeting process; and when the vehicle colored spectacles are used in the daytime, the sunlight can be shallowly shaded, the large colored lens is sleeved with a lightproof bag, the bag is fixed and the large colored lens can be used as a plate for shading the sunlight (i.e. the large colored lens has the same function with an existing sunshading plate). The vehicle colored spectacles are used for shallowly shading the sunlight, shading the sunlight, resisting to radiation of the high-beam light of the opposite vehicle in the meeting process at night and resisting to all the hard light.

The invention relates to the improvement of a switch circuit structure, in particular to a safe lamp switch circuit. The safe lamp switch circuit provided by the invention comprises a lamp, a switch rectifier bridge, a diode, a capacitor, a resistor and a thyristor. A structural key point is that: the rectifier bridge is connected in series with the lamp; a positive current output end of the rectifier bridge is respectively connected with positive electrodes of the diode and the thyristor, and a negative output end of the rectifier bridge is respectively connected with negative electrodes of the capacitor and the thyristor; a control electrode of the thyristor is connected with the resistor; the other end of the resistor is respectively connected with the positive electrode of the capacitor and the switch; and the switch is connected with the negative electrode of the diode.

The invention provides plant insecticide. The plant insecticide is characterized by being prepared from, by weight, 6-8 parts of geranium, 5-9 parts of mint, 10-14 parts of cordate telosma, 4-10 partsof daphne odera, 2-4 parts of emulsifier, 15-20 parts of ethylene glycol, 5-8 parts of capsaicin, 3-5 parts of fructus evodiae, 6-12 parts of chinaberry bark powder, 4-14 parts of radix stemonae and4-6 parts of pine needle. The plant insecticide is safe to aquatic products, livestock and poultry; plant ingredients are adopted as raw materials, so that the plant insecticide is simple and easy-to-obtain in material and has the advantages of being safe, nontoxic and good in insecticidal effect.

A manual and automatic integrated return oil filter comprises an upper shell and a lower shell, a filter element is arranged between the upper shell and lower shell, the upper shell is provided with agas discharging port, the lower part of the lower shell is provided with a gas feeding port, the gas feeding port is provided with an oil returning mechanism, an annular boss is arranged at the innerbottom surface of the lower shell, an oil storage groove is formed in the annular boss, the bottom of the lower shell is provided with a vertical oil returning hole and a horizontal oil returning hole, an automatic oil return port is arranged at the inside end of the horizontal oil returning hole, the automatic oil returning port is communicated with a vacuum pump oil storage tank, an automatic oil sealing and returning mechanism is arranged in the automatic oil returning port, a manual oil returning joint is arranged at the outside end of the horizontal oil returning hole, the manual oil returning joint is connected with the vacuum pump oil storage tank through an oil pipe, an oil discharging hole is arranged at one side of the gas feeding port, and a stop valve is arranged in the oil discharging hole.

The invention discloses a protection device for a communication line interface, and the device comprises a communication connector. The central part of the front side wall of the communication connector is fixedly provided with a connector, and the front side wall of the connector is provided with a slot. The lower surface of the inner side wall of the slot is fixedly provided with a contact piece, and an outer side wall of the connector is sleeved by a protection cover. Whether a protection sleeve is needed or not depends on the actual situations: if the connector is a naked connector, the connector can be directly inserted for use without disassembling the protection sleeve. When the device moves a resetting support seat and is clamped, a connecting rod still moves, and drives a clampingblock to move. When the pressure reaches a certain value, a resetting spring will generate a recoil force and will moves in an opposite direction, i.e., driving the connecting rod to move in the opposite direction, and the clamping block will rebound immediately. However, a clamping board clamped with the clamping block will be free of clamping, thereby facilitating the disassembly of the protection cover, and reducing the damages to the communication connector. Moreover, the device can achieve the judgment of whether there is electric leakage at an interface or not, and guarantees the safety.

The invention provides organic insecticide. The organic insecticide is characterized by preparing from, by weight, 4-9 parts of platycladus orientalis juice, 20-30 parts of alcohol, 4-8 parts of sandalwood oil, 20-30 parts of capsaicin, 8-14 parts of garlic, 20-28 parts of water, 6-14 parts of camphor, 5-9 parts of onion, 1-3 parts of sodium hexametaphosphate, 10-20 parts of butyl chitosan and 1-3parts of atlas root bark. The organic insecticide is safe to crops, is prepared by adopting natural materials and has the advantages of being safe, nontoxic and free of environment pollution.