65results about How to "Reduce the influence of external forces" patented technology

The invention discloses a gas extraction and coal spontaneous combustion coupling disaster-causing experimental simulation apparatus and method in a coal mine. The gas extraction and coal spontaneous combustion coupling disaster-causing experimental simulation apparatus comprises a pressure-resistant insulation seal tank, a gas extraction and filling apparatus and a monitoring apparatus; the gas extraction and filling apparatus comprises a vacuum gas extraction pump and a constant-pressure gas filling apparatus, the constant-pressure gas filling apparatus comprises a gas filling bottle with a pressure gauge, a decompression valve, an explosion-proof gas washing box, a gas drying box, a constant-temperature heating box, a pressure stabilizing valve, a pressure gauge, a flow gauge and two gas switch valves; the monitoring apparatus comprises a plurality of temperature sensors, a temperature analysis instrument and a gas chromatograph; the pressure-resistant insulation seal tank is internally provided with a coal sample, and the gas extraction and filling apparatus enables the vacuum gas extraction pump and the constant-pressure gas filling apparatus to be respectively connected with the coal sample in the heat-resistant insulation seal tank through an h-shaped steel pipe; and the monitoring apparatus is connected with the pressure-resistant insulation seal tank. By adopting the gas extraction and coal spontaneous combustion coupling disaster-causing experimental simulation apparatus and method, a gas extraction and coal spontaneous combustion coupling disaster causing process in the underground gas extraction process of a coal mine can be really and accurately simulated.

The invention relates to a device for interlocking a chassis vehicle with a cabinet door of a circuit breaker chamber. A front baffle plate of a positioning frame is provided with a locking plate; an elastic member is sleeved on a connector; an external supporting plate covers the locking plate and is connected with the front baffle plate; a first stop block of a lead screw position-limiting mechanism is connected with a first rotary shaft through a first connecting shaft; a second connecting shaft installed on the first rotary shaft is arranged in a spiral guide groove of a first sleeve; an offsetting spring is installed between the first rotary shaft and the first sleeve; the first sleeve in a free state drives the first stop block to be installed between the locking plate and the frontbaffle plate; a second rotary shaft of a cabinet door position-limiting mechanism is installed on the external supporting plate; a second stop block is connected with the second rotary shaft through the first connecting shaft; the second connecting shaft installed on the second rotary shaft is arranged in a spiral guide groove of a second sleeve; an offsetting spring is installed between the first rotary shaft and the second sleeve; and the second sleeve in a free state drives the second stop block to be installed in a position-limiting groove of the cabinet door baffle plate. The device forinterlocking the chassis vehicle with the cabinet door of the circuit breaker chamber has the advantages of rational and compact structure, reliability for interlocking, and reduction of production cost.

The invention discloses an intelligent charging mechanism which comprises a base, a first supporting arm, a second supporting arm, a first dive mechanism, a second drive mechanism, a third drive mechanism and a control mechanism, wherein the first supporting arm is driven by the first drive mechanism to move; the second supporting arm is driven by the second drive mechanism to move; and the third drive mechanism provides lifting power for the control mechanism. In this way, the control mechanism can be conveyed to a charger of an electric car accurately, and intelligent charging of the electric car and automatic separation after the charging can be achieved.

The invention discloses glue scraping equipment which comprises a machine body, a scraper transmission device, a linear displacement device and a platform jig. The scraper transmission device is arranged on the machine body and comprises a scraper component capable of moving horizontally and vertically, the linear displacement device is arranged on the machine body, the platform jig is arranged on the linear displacement device and can be driven by the same to move from one side to the other side of the scraper transmission device. Consequently, the glue scraping equipment can remove a glue layer of a binding face quickly, greatly and stably through a mode of dragsaw-type glue scraping.

The invention relates to the technical field of automatic control, and relates to an electromechanical automatic leveling system and leveling method. The leveling system comprises a control module; the control module is connected with three or more servo electric supporting legs used for supporting a vehicle-mounted platform, a double-shaft inclination angle sensor, a display screen, a buzzer, a control terminal; a power module supplies power to the control module, the servo electric supporting legs, the double-shaft inclination angle sensor, the display screen, the buzzer and the control terminal; and the control module is also connected with a flatness laser measurement module. The electromechanical automatic leveling system and the leveling method have the advantages that leveling is rapid, the leveling precision is high, free switching among automatic leveling, semi-automatic leveling and manual leveling can be achieved, operation is easy, the automation degree is high, the size issmall, and reliability is high.

The invention discloses an improved TO-220D7L lead frame which includes a plurality of frame units sequentially connected in series by connecting ribs. Each frame unit includes a matrix and a pin area; the matrix includes a radiating fin area and a first chip loading area; the pin area is provided with seven pins; among the fixed pins, one pin is provided with a second chip loading area on the topthereof, and one pin is provided with a connecting piece on the top thereof; the pin area is connected with the matrix through the connecting piece; each of the other fixed pins is provided with a welding part on the top thereof, and the dummy pin is connected with the frame unit as a whole through the connecting ribs; a buffer groove is arranged at the joint of the radiating fin area and the first chip loading area; the radiating fin area is provided with fan-shaped gaps on the two sides thereof, and each fan-shaped gap is provided with a conical blind hole in the side thereof; and the radiating fin area is provided with a first positioning hole, and auxiliary positioning lugs are arranged on the two sides of the first positioning hole. By using the structure, two chips can be installedsimultaneously. The investment is reduced for enterprises. The improved TO-220D7L lead frame has a good waterproof effect and good performance, and has high market competitiveness.

The invention discloses a household appliance packaging device. The household appliance packaging device comprises a box body, wherein sliding grooves are vertically formed in the inner walls of the left end and the right end of the box body respectively, through holes communicating with the inside and the outside are formed in the inner walls of the sliding grooves, rotating rods penetrate through the through holes, first chain plates sleeve one ends, located in the sliding grooves, of the rotating rods, worm wheels are rotationally connected to the inner walls of the sliding grooves, the worm wheels are located under the rotating rods, the worm wheels are sleeved with second chain discs, the second chain discs are in transmission connection with the first chain discs, the top surfaces ofthe sliding grooves are rotationally connected with threaded rods, the threaded rods are sleeved with worm gears, the worm gears are meshed with the worm wheels, the threaded rods are in threaded connection with lifting plates, the lifting plates are located below the worm wheels, the lower ends of the lifting plates are connected with ejector rods, elastic devices are arranged at the bottoms ofthe sliding grooves, convex sliding blocks are arranged in the sliding grooves, and the upper ends and the lower ends of the convex sliding blocks are abutted against the lower ends of the ejector rods and the upper ends of the elastic devices. The household appliance packaging device not only can fix household appliances and has a certain buffering effect, but also is high in flexibility.

The invention discloses a high school physics free fall experiment simulation device, and particularly relates to the technical field of physics teaching equipment. The high school physics free fall experiment simulation device comprises a fixed base, wherein a balance plate is arranged at the top of the fixed base; two symmetrically distributed supporting sliding rods are arranged on the two sides of the top of the fixed base; sliding sleeves are slidably connected to the outer sides of the supporting sliding rods; an adjusting cross frame is arranged between the two sliding sleeves; and twosymmetrical mounting plates are fixedly connected to the top of the balance plate. According to the high school physics free fall experiment simulation device, by adjusting the heights of the adjusting cross frame and a bearing plate, a first experimental cylinder and a second experimental cylinder are slidingly stretched, the falling height of experimental spheres is adjusted, pumping is carriedout by a vacuum pump to enable the inner parts of a first experimental assembly and a second experimental assembly to be vacuum, the two experimental spheres with different masses are simultaneously released from the same height, free fall experiment demonstration is carried out, the influence by external force is small, the experiment result is accurate, the experiment error is reduced, the contrast is clear, and the relationship between mass and acceleration is convenient to observe.

The invention discloses a welding station pressure monitoring system and a monitoring method. The welding station pressure monitoring system comprises several chucks integrated with pressure detectiondevices, an on-site station data acquisition device, a data server, a storage server and a device terminal. The system can be used to continuously detect the pressure of the chucks, the on-site station data acquisition device sends data collected by the chucks to the data server so as to carry out subsequent data processing, and the processed data is stored in the storage server. The data serveris connected to the device terminal in a signal connection mode. The device terminal can be used to inquire real-time data in the data server or historical data in the storage server. By using the welding station pressure monitoring system and the monitoring method, the working pressure state of each chuck on a production line can be accurately monitored and can be integrally managed. When the chucks detect that the pressure deviates from expected data, the data server sends an alarm signal to the device terminal.

The invention discloses a demonstration device for physics teaching of gravitational acceleration, and relates to the technical field of physics teaching equipment. The demonstration device for physics teaching of gravitational acceleration comprises a square supporting column body, wherein an adjusting mechanism, a storage mechanism, a buffer mechanism, a mounting rod, a second photogate and a display screen are arranged on the square supporting column body, a base is welded to the outer surface of the bottom of the square supporting column body, and one end of the mounting rod penetrates through the hole and extends into the square supporting column body. According to the demonstration device for physics teaching of the gravitational acceleration, the whole demonstration process is morevisually displayed in front of teachers and students, various data can be read from the display screen in the experiment process, and students can better understand and master the nature and significance of the gravitational acceleration; and meanwhile, the free falling motion of an experimental iron ball is achieved by adopting an electromagnetic braking mode, the external force influence on theexperimental iron ball during free falling is reduced, and the experimental error is reduced.

The invention discloses an intelligent guide rail type sliding window capable of being automatically opened and closed according to environmental factors. The intelligent guide rail type sliding window comprises a window frame, a sliding window body matched with the window frame, a microprocessor module and an environmental factor acquisition device; a base of the window frame is provided with a stepping motor and a lead screw with one end connected with an output shaft of the stepping motor; the other end of the lead screw is movably fixed with the base of the window frame; a polished rod parallel to the lead screw is also fixed on the base; a sliding table is fixed at the bottom of the sliding window body; a threaded hole penetrating through the lead screw and a through hole penetratingthrough the polished rod are formed in the sliding table; and the microprocessor module receives and processes the signal of the environmental factor acquisition device and sends an instruction for driving the stepping motor to rotate according to the threshold value of the signal. According to the intelligent guide rail type sliding window, the sliding window can be automatically controlled according to the external environment, rainwater and strong wind can be isolated, the indoor temperature can be kept, and it is ensured that the sliding window is in an optimal opening state.

The invention discloses a stabilizing device for an unmanned aerial vehicle based on spraying of a spraying pipe, and belongs to the field of unmanned flight, the stabilizing device comprises a base, the base is provided with the spraying pipe, the bottom surface of the base is fixedly provided with a thrust device, and the thrust direction of the thrust device is opposite to the spraying direction of the spraying pipe; a guide device capable of changing the water flow direction is elastically and movably arranged at the spraying end of the spraying pipe; according to the stabilizing device for the unmanned aerial vehicle based on spraying pipe spraying, by arranging the reverse thrust rotor wings, when the aircraft conducts spraying fire extinguishing, reaction is balanced, the fuselage can reach balance, the flow speed of sprayed water flow is collected and fed back to the reverse thrust rotor wings, the reverse thrust can be adjusted in real time, and the stability of the unmanned aerial vehicle is improved. The aircraft can be balanced in real time, and the influence of external force is reduced.

The invention relates to an oxygen uptake device which comprises a bag body. A sticking tape is arranged at the front portion of the bag body, an oxygen interface is arranged at the rear portion of the bag body, and an oxygen port sealing cap is arranged outside the oxygen interface. A material beneficial to people is adopted, oxygen concentration most suitable for a human body is produced, and the oxygen uptake device has the advantages of being high in strength, light, portable, attractive, convenient to use and the like and is suitable for temporary oxygen therapy on various occasions and temporary usage of patients at home.

The invention discloses an in-vitro cell automatic-grasping co-cultivation platform system and aims to develop a bio-chip design used in a cell cultivation system. The system includes following characteristics: (1) a co-cultivation platform, wherein a micro-environment being suitable for cultivating various cells is established; (2) dynamic perfusion, wherein a micro-channel system is used for dynamically changing a culture medium so that an appropriate cell growth environment is maintained; and (3) automatic grasping, in which the to-be-cultured cell can be automatically positioned in certain positions by means of a flow resistance, thereby reducing probability of damaging cells due to artificial operations.

The invention discloses an improved TO-220EW lead frame. The frame comprises multiple frame units which are in series connection through connection ribs in sequence, each frame unit comprises a substrate and a pin area, and the substrates comprise heat dissipation sheet areas and slide glass areas; the slide glass areas are provided with chip installation slots, the pins areas are provided with multiple pins, and connection sheets are arranged at the tops of the middle pins; welding areas are arranged on the tops of the other pins, the pin areas are connected with the substrates through the connection sheets, and heat dissipation holes are formed in the heat dissipation sheet areas; first kidney-shaped holes are formed in the junctions of the heat dissipation sheet areas and the slide glass areas, first buffer slots are formed in the lower portions of the first kidney-shaped holes, second kidney-shaped holes are formed in the lower portions of the welding areas, and second buffer slotsare formed in the lower portions of the second kidney-shaped holes; protuberant pin protrusions are arranged on outer lead areas of all the pins, and pin mouths are arranged on the bottoms of the pins. The improved TO-220EW lead frame of the structure is excellent in insulation performance and high pressure resistance and good in waterproof effect and product performance and has high market competitiveness.

The invention belongs to the technical field of ordinary methods for coating surfaces with liquid or other fluids, and particularly discloses a method for spraying paint to boards. The method includesthe following steps that firstly, the paint is prepared, and a conveying belt, a rack above the conveying belt, three grinding pieces and two paint spraying mechanisms are prepared; 2, the three grinding pieces are sequentially and fixedly mounted on the rack in the moving direction of the conveying belt, the distances between the three grinding pieces and the conveying belt are sequentially increased, and the two paint spraying mechanisms are mounted on the portions, between every two adjacent grinding pieces, of the rack; 3, the paint is introduced into the paint spraying mechanisms, the boards are fixed to the conveying belt, and then the paint spraying mechanisms and the conveying belt are started; and 4, when the boards move along with the conveying belt, the boards are ground by thegrinding pieces and paint-sprayed by the paint spraying mechanisms alternately. The method aims at solving the problem that in the prior art, the efficiency during paint spraying is low.

The invention provides a pipe cutting machine with double blades. Two vertical blades are arranged on the top end of the pipe cutting machine in parallel, a fixed structure is arranged on the end of a base of the pipe cutting machine, the fixed structure comprises vertical rod pieces which are arranged on both ends of the base, threaded holes are formed in the bottoms of the rod pieces, screw rods I are inserted into the threaded holes, and the screw rods I are horizontally fixed to the base; a threaded hole which is perpendicular to the blades is formed in the upper end of one rod piece, a screw rod II is inserted into the threaded hole, the screw rod II is perpendicular to the blades, two parallel threaded holes are formed in the end, and two parallel screw rods III are respectively inserted into the two parallel threaded holes; and a through hole is formed in the upper end of the other rod piece, a movable short rod is inserted into the through hole, a clamping mechanism is connected to the end of the short rod, the clamping mechanism comprises a vertical screw rod IV, the thread directions of both ends of the screw rod IV are opposite, and the horizontal rod II is in threaded connection to both ends of the screw rod IV. Two-time cutting is performed at the same time, so that resources are saved, the efficiency is improved, and additionally, a steel pipe is transversely fixed, so that the influence of external force is reduced, and the rate of finished products is increased.