44results about How to "Enter to ensure" patented technology

The invention relates to an elastic locating pin comprising an elastic pin, a pin seat, an adjusting bolt and a spring; the elastic pin is matched in the pin seat in a sliding mode and protrudes out of one end of the pin seat; the other end of the pin seat is fixedly provided with a limiting screw cap; the adjusting bolt is screwed in the limiting screw cap; and the spring is assembled between the adjusting bolt and the elastic pin. According to the invention, the limiting screw cap is additionally arranged at the end of the pin seat, when the elastic pin does not enter a locating hole of a workpiece, the limiting screw cap can stop the elastic pin from being pressed to the bottom, a worker can discover that the workpiece is not clamped in situ in time, in this way, the elastic pin can be enabled to enter the locating hole of the workpiece so as to locate the workpiece reliably.

The invention discloses an open hole gravel packing tool for a horizontal well and a use method thereof. An oil layer is packed from top to bottom by adopting the open hole gravel packing tool for the horizontal well. In a packing process, a sand-carrying fluid enters through an oil pipe; specific to the aim of preventing a suction valve from being closed, the sand-carrying fluid is not allowed to flow through the suction valve, can only enter an annulus between an outer pipe column and a service tool through a packing hole of the packing tool of the service tool, and enters an open hole section oil layer through a fluid outlet hole in a packing sliding bush; and sand in the sand-carrying fluid is blocked in the oil layer through a sieve tube, the fluid enters a sand-prevention outer pipe column through the sieve tube, continually flows upwards after entering the service tool from a bottom sealed lower end hole, enters double barrels of the packing tool as well as a packing annular space formed by a central pipe and an outer layer pipe which are communicated with the double barrels, enters annuluses of a casing and the service tool through a return hole in the packing tool, and returns to the ground till packing from top to bottom is completed.

The invention discloses a total heat exchange fresh air system and indoor purification coupled air cleaning device which comprises a fan, a total heat exchange component, a high-voltage electrostatic component, a catalyst component, a coarse filtration component and the like. Fresh air is led in by the aid of total heat exchange, the fresh air and indoor air are synchronously cleaned, contaminant is circularly cleaned in an indoor space, the content of indoor CO2 is reduced by leading in the fresh air, the freshness of the indoor air is increased, inlet outdoor air and outlet indoor air are exchanged by the aid of total heat, super-cooled air cannot enter the indoor space in winter, superheat air cannot enter the indoor space in summer, heat is recovered, energy consumption is reduced, outdoor air is exchanged by the aid of total heat and then directly enters a cleaning component, clean and fresh air enters the indoor space, and the influence of fog and haze on the indoor air is remarkably reduced.

The invention discloses an automatic loading production line for the magnetic steel sheets of motors. The automatic loading production line includes a frame which is provided with a guide plate. The guide plate is provided with guide slots which correspond to the magnetic steel slots of a rotor core and are used for magnetic steel sheets to pass through. A jacking component used for jacking the rotor core towards the guide plate is arranged below the guide plate. An assembly line capable of conveying to-be-loaded rotor cores and delivering loaded rotor cores is arranged between the jacking component and the guide plate. A core tooling plate for placing a rotor core is arranged on the assembly line. The core tooling plate is provided with a jacking hole for the jacking component to pass through below the rotor core. The frame is provided with a feeding mechanism used for providing magnetic steel sheets. The frame is provided with a manipulator device which can clamp the magnetic steel sheets on the feeding device to the guide slots. The automatic loading production line for the magnetic steel sheets of motors further includes a control system used for controlling the movement of thefeeding mechanism, the jacking component, the manipulator device and the assembly line. The automatic loading production line for magnetic steel sheets of motors has a simple structure and high production efficiency.

The invention discloses a feeding device for a winding machine. The feeding device comprises a main framework. The main framework is adjacent to a winding device of the winding machine, and a fixing groove is arranged at the peripheral edge of the winding device. The feeding device is characterized in that a notching mechanism and a guiding mechanism are sequentially arranged on the main framework, a positioning groove can be punched on a to-be-wound steel belt by the notching mechanism, the steel belt can be guided into the fixing groove and positioned in the fixing groove by the guiding mechanism, and the positioning groove is matched with the guiding groove; the guiding mechanism comprises a guiding element, the guiding element is arranged on the main framework and can move relative to the main framework, a guiding groove is arranged in the guiding element, an inclination angle of the guiding groove is identical to an inclination angle of the fixing groove, and the shape of the guiding groove is matched with that of the steel belt; a through hole which is communicated with the guiding groove is formed in the upper portion of the guiding element, and a lower pressing piece capable of compressing the steel belt and the guiding groove is arranged in the through hole. The feeding device has the advantages that the winding machine is provided with the feeding device comprising the notching mechanism and the guiding mechanism, so that the steel belt can be precisely positioned to the upper side of the fixing groove of the winding device, and a starting end of the steel belt can be automatically fed into the fixing groove.

The invention discloses a transformer substation maintenance operation centralized management and control information platform. The platform comprises a construction area, a second door area and a central control area, the second door area is arranged between the construction area and the central control area, the construction area is provided with an electronic fence and an electronic fence camera, and the electronic fence has an alarm function; the electronic fence camera has the functions of video monitoring acquisition and border crossing alarm prompt; the second door area is provided withan AI face recognition camera and an all-in-one machine, the AI face recognition camera recognizes the identity of a constructor, and the all-in-one machine is used for security personnel to verify and check in-and-out personnel information and can also give an alarm for prompting; and the central control area is provided with a control server, the control server comprises a central core controlsystem, and the central core control system is used for acquiring equipment information on the control server and displaying the equipment information on the central control large screen for background management personnel to manage and monitor conditions of a construction site in real time. Equipment used by the information platform is simple, and the information platform is reasonable in layout,easy to build, convenient to maintain and low in investment cost.

The embodiment of the invention provides a sound production device and electronic equipment. The electronic equipment can comprise a mobile phone, a tablet personal computer, a notebook computer, a super mobile personal computer (UMPC), a handheld computer, an interphone, a netbook, a POS machine, a personal digital assistant (PDA), an automobile data recorder, wearable equipment, virtual realityequipment, Bluetooth sound equipment/earphones, vehicle-mounted front equipment and other mobile or fixed terminals with a loudspeaker function. A damping assembly is arranged and plays a role in decelerating the air flow formed in the rear sound cavity, so that the air flow formed in the rear sound cavity enters the cavity in the electronic equipment in a low-flow-speed state, the impact of the air flow on the thinner electronic equipment shell is weakened, the amplitude is reduced, the purpose of suppressing or reducing the shell vibration of the electronic equipment is achieved, and the experience of holding the electronic equipment by a user is improved.

The invention discloses an automatic pet feeding and discharging mechanism. A rotating shaft is driven to rotate through a synchronous motor, and space between each two adjacent blades on the rotatingshaft pushes feed in an unloading box into a discharging port of a discharging box to be discharged one by one; the number of times that operation personnel needs to start the synchronous motor depends on how much feed is needed; every time when the synchronous motor is started, the synchronous motor drives the rotating shaft by a certain angle, and the blades on the rotating shaft push one partof the feed to enter the discharging port of the discharging box; a stirring rod can stir part of the feed in the unloading box to enable the part of the feed to flow when the rotating shaft rotates,in this way, the feed is ensured to enter the unloading box; a jamming-preventive comb piece can card the feed between the upper edges of the blades and a lower port of the unloading box, so that thefeed can be prevented from being jammed at the upper edges of the blades. The automatic pet feeding and discharging mechanism is smoother in discharging.

The invention discloses a simulation experiment well. The simulation experiment well comprises a wellhead apparatus, a test inner shaft and a test outer shaft, the test inner shaft and the test outershaft are both in vertical states, the test inner shaft is arranged in the test outer shaft in a sleeved manner, the wellhead apparatus is arranged above the test outer shaft, the wellhead apparatus is connected with the upper end of the test inner shaft, the lower end of the test inner shaft is connected with the lower end of the test outer shaft through an anti-rotating mechanism, and the anti-rotating mechanism can prevent the rotation of the test inner shaft relative to the test outer shaft. The simulation experiment well can be arranged underground so that problems of long construction period, large investment, and inconvenient maintenance of the conventional test well are solved.

The invention discloses a continuous organic waste gas catalytic purification device and a running method thereof, relates to a waste gas treatment technology, and aims to solve the problem that the prior art is not suitable for low-concentration organic waste gas. The continuous organic waste gas catalytic purification device is characterized by comprising an air inlet pipe, an exhaust pipe, a primary catalytic combustion device, a smoke exhaust barrel, at least five adsorption beds and a heater, wherein the adsorption beds are communicated with the air inlet pipe, and are provided with air inlet valves; the adsorption beds are communicated with the exhaust pipe, and are provided with air outlet valves; the heater is communicated with the adsorption beds, and heating valves are arranged between the heater and each adsorption bed respectively; the primary catalytic combustion device is communicated with the adsorption beds, and connection valves are arranged between the primary catalytic combustion device and each adsorption bed respectively; and the air outlet end of the primary catalytic combustion device is communicated with the smoke exhaust barrel. The continuous organic wastegas catalytic purification device disclosed by the invention can not only be suitable for treating the low-concentration organic waste gas, but improve the purifying effect of high-concentration organic waste gas.

The invention discloses an air-suction cell seed distributor which comprises a distributor shell, a seed chamber, a seed-clearing brush, a discharge plate, an air cutoff stopper, a secondary seed charge girdle device and a shaft. The distributor shell comprises a front end cover, a cover plate, a belt and an external fixed plate. The shaft is mounted on the distributor shell, the discharge plate is positioned by the shaft and fixed onto the external fixed plate through bolted connection, the front end cover is positioned on the upper portion of the discharge plate, the air cutoff stopper is positioned in a negative-pressure air chamber of the discharge plate, the seed-clearing brush is mounted on the inner side of the front end cover, and the secondary seed charge girdle device is welded on the inner wall of the belt. The air-suction cell seed distributor can be divided into a seed taking area, a seed-clearing area, a seed carrying area and a seed throwing area. Seeds in the seed taking area enter cell holes under the action of negative pressure and the gravity of the seeds, redundant seeds at the edges of the cell holes are brushed back into the seed chamber by the seed-clearing brush in the seed-clearing area, the moving area of the seeds can be limited by a seed protecting plate in the seed carrying area, the negative pressure is cut off by the air cutoff stopper in the seedthrowing area, and the seeds are thrown under the action of the gravity of the seeds. The requirements for seed arrangement negative pressure and damage to the seeds can be effectively reduced, the sowing qualification rate of the seed distributor is increased, and the seed distributor is suitable for precision sowing of irregular seeds with medium and large particle sizes and shapes.

The invention provides a photovoltaic system and a turn-off control method. In the photovoltaic turn-off method, if an inverter enters a safe state, the input voltage of turn-off devices at the preceding stage of the inverter are reduced, so that the turn-off devices enter a shutdown state or an under-voltage protection state, namely, the turn-off devices are turned off; and when the turn-off devices at the preceding stage of the inverter are turned off, photovoltaic strings can enter a safe state. Therefore, according to the photovoltaic turn-off method provided by the invention, when the inverter enters a safe state, the photovoltaic strings can be ensured to enter a safe state.

The invention relates to a smoke sensor with an independent condensation recognition bin and a using method. The smoke sensor comprises a shell. The shell is fixedly provided with a smoke detection bin and a condensation recognition bin. The smoke detection bin is fixedly provided with a first transmitting tube, a first receiving tube and a first partition plate; the smoke detection bin is provided with a first smoke inlet; a reflection column is fixedly arranged in the condensation recognition bin; the condensation recognition bin is fixedly provided with a second transmitting tube, a secondreceiving tube and a second partition plate; the second transmitting tube and the second receiving tube are positioned at the middle upper part of the condensation recognition bin; the reflecting column is used for reflecting the detection light emitted by the second emitting tube, and the second receiving tube is not in the emergent area of the light reflected by the reflecting column; the condensation recognition bin is provided with an air inlet; the shell is provided with a plurality of second smoke inlets; the shell is further provided with a control panel. The control panel is used for outputting an alarm signal when the difference between the reverse current value of the second receiving tube and the reverse current value of the first receiving tube is greater than a trigger threshold value; and the condition of false alarm is effectively avoided.

The invention discloses a pile foundation type test well building method. The method comprises the following steps that 1, ground well drilling is performed through a drilling machine; 2, the drillingmachine is removed, a test outer well shaft is put down into a drilled well hole, and the position of the test outer well shaft is fixed; 3, a test inner well shaft is put down into the test outer well shaft; 4, a well mouth device is installed at the upper end of the test inner well shaft. According to the pile foundation type test well building method, the problems that an existing test well islong in building period, large in investment and not convenient to maintain and repair are solved.

The invention discloses a steel structure plant with ventilation performance, and belongs to the technical field of steel structure plants. The steel structure plant comprises a foundation and steel frame walls, the steel frame walls are fixedly connected with the two sides of the top end of the foundation, through holes are transversely formed in the steel frame walls, and air deflectors are connected in the through holes. First net covers are fixedly connected to the positions, located on the outer sides of the steel frame walls, of the air deflectors, a top plate is fixedly connected to the top ends of the steel frame walls, tempered glass is installed in the top plate, a wind indicator is fixedly connected to one side of the top plate, a ventilation opening is formed in the middle of the top end of the top plate, and a second net cover is fixedly connected to the position, corresponding to the ventilation opening, of the top end of the top plate. Supporting columns are fixedly connected to the two sides of the second net cover and located at the top end of the top plate, a shielding plate is fixedly connected to the top ends of the supporting columns, the first net covers and the second net cover are arranged, so that dust entering the plant is reduced, and damage caused by the fact that the dust enters machines in the plant is reduced.