129results about How to "Realize free conversion" patented technology

The invention relates to a displaying device which comprises a device which provides image light source and a microlens array which is arranged at the front part of the device which provides image light source. The microlens array is composed of triangle-shaped prism lenses. Two adjacent lines of pixels are refracted to different directions by the microlens array. The invention also can further comprise a first transparent electrode and a second transparent electrode which are used for controlling an electric field and double-refractive material which is arranged between the first transparent electrode and the second transparent electrode. The light beam which is sent out by the device which provides image light source directly transmittedly or refractively passes through the microlens array and the double-refractive material in the area in which the double-refractive material is arranged under the condition that an electric field exists or no electric field exists. The conditions that two images can be displayed in different directions, and the same image can be displayed in the same direction can be controlled. The invention has the advantages of simple structure and wide application.

The invention discloses a high ground clearance and variable wheel distance and axle distance type plant protection machine. The high ground clearance and variable wheel distance and axle distance type plant protection machine comprises an upper vehicle frame and a lower vehicle frame, wherein the upper vehicle frame and the lower vehicle frame are connected by a miniature rotary platform; a power system, a main variable-speed system, a hydraulic system, a driving operation system, a pesticide spraying and pollinating system, a fertilizer applying system, and the like are symmetrically arranged around a central rotary platform according to a gravity center balance ratio principle; the lower vehicle frame is mainly provided with four foldable and telescopic support legs, and the walking, steering, change of wheel distance and axle distance, adjusting of ground clearance and gravity center height, and other functions of the machine are realized by a corresponding wheel rim transmission system. The invention also discloses the wheel rim transmission system; by utilizing the mixed transmission type of universal transmission, chain wheel transmission and bevel gear transmission, the wheel distance and axle distance can be adjusted. The high ground clearance and variable wheel distance and axle distance type plant protection machine has the advantages that the structure is compact, the function is complete, the working is stable, the application range is wide, the cruising ability is strong, the operation is easy, and the operation efficiency is high. The wheel rim transmission system has the advantages that the stability and operability are good, the driving force is large, the effect of one machine with multiple functions is realized, and the requirement of whole machine is met.

The invention discloses a general type six-dimension force sense interaction device with seven freedom degrees. The device is composed of a Z axis rotation substrate, a shoulder joint mechanical arm, an elbow joint mechanical arm, a bias spherical wrist holding mechanism, a six-dimension force sensor and drive motors. The shoulder joint mechanical arm is installed on the Z axis rotation substrate through a revolute pair, the elbow joint mechanical arm is installed at the tail end of the shoulder joint mechanical arm, the bias spherical wrist holding mechanism is fixed at one end of the elbow joint mechanical arm, the six-dimension force sensor is fixed on the holding mechanism, and the seven freedom degrees of the interaction device respectively exert feedback force through seven sets of drive motors. An operator achieves complex interactive operation through the bias spherical wrist holding mechanism. The general type six-dimension force sense interaction device with the seven freedom degrees is simple in structure, flexible in operation, free of singular points in mechanism motion, simple in mechanical kinetic model and convenient to control, and moreover, a U-type support at the elbow can reduce fatigue of the operator and increase comfort of the operation.

A microfluidic chip with a rotary valve structure includes a valve core, a substrate and a base plate, one surface of the substrate is attached to the base plate, the other surface of the substrate is provided with a valve chamber and a flow passage, the valve chamber is provided with at least two valve chamber through holes, each valve chamber through hole is respectively connected with the flow passage, the substrate is also provided with an inlet and an outlet respectively connected the flow passage, the valve core comprises a sealing layer and a support layer, the sealing layer is arranged in the valve chamber, the support layer is arranged on the sealing layer, the sealing layer is provided with a switching channel; and the support layer rotates to drive the rotation of the sealing layer for communication of the switching channel with the at least two valve chamber through holes. Free conversion and opening and closing of different flow paths can be realized only by use of one valve core, the control requirements of various flow paths can be met, production efficiency is improved; the control of the flow paths can be realized only by rotating of the valve core, and the control method is simple and efficient.

The invention discloses a glasses-free 3D touch AMOLED display device, which comprises bottom layer substrate glass, a low-temperature polycrystalline silicon thin film transistor, an organic light emitting material layer, a packaging cover plate, a polyemid, a liquid crystal molecular layer and an upper-layer glass cover plate stacked in sequence from the bottom top. The invention also discloses the manufacturing method of the display device. According to the glasses-free 3D touch AMOLED display device, on one hand, through carrying the AMOLED display device, the glasses-free 3D touch AMOLED display device has the advantages of wide viewing angle, high brightness, self light emitting, fast response speed and the like, a backlight device is not needed, and the technology process is simplified; on another hand, though optimizing the device structure, the product thickness and the cost are reduced; and on another hand, the liquid crystal molecular layer serves as the 3D display grating, and free switching between 2D and 3D can be realized.

The invention relates to an automatic Majiang and card apparatus, which comprises a table body provided with an upper table box (1a) and a lower table box (1b), a Majiang apparatus, a through hole positioned in the center of the table body, a card rising apparatus of the Majiang apparatus arranged on the periphery of the center hole, and a card shuffling apparatus (17) of the Majiang apparatus positioned inside the upper table box (1a). The invention is characterized in that: a poker machine assembly capable of achieving the functions of card rising, rotating and flicking is arranged in the central hole of the table body (1); the poker machine assembly rotates and flicks when risen above the table top, and is aligned with the table top through the top surface when dropt to the lowest point; the poker machine assembly comprises a flicking mechanism, a rotating mechanism, a lifting mechanism and a circuit control system. The invention has the advantages of having the automatic Majiang function as well ad the automatic shuffling and flicking card functions on the table top, realizing the optional transformation for playing card and Majiang, causing the games more equitable and interesting, reducing the cost of the game equipment for the double purposes, and saving the using space.

The invention relates to a massage device, in particular to the massage device with various traditional Chinese massage manipulations, such as kneading, finger rolling, finger pressing, palm kneading, palm pushing, palm pressing, rapping, rolling, vibrating and the like, which belongs to the technical field of massage device structures. The massage device with various traditional Chinese massage manipulations is characterized by mainly comprising a fixed supporting mechanism, a connecting mechanism and a massage execution mechanism and can be used for realizing free conversion between the various traditional Chinese massage manipulations, such as the kneading, the finger rolling, the finger pressing, the palm kneading, the palm pushing, the palm pressing, the rapping, the rolling, the vibrating and the like and various massage manipulations. The various massage manipulations in the invention are realized according to the requirements for the traditional Chinese massage manipulations and meet the requirements for a traditional Chinese massage theory matched with the various massage manipulations.

The invention discloses a soft material mechanical performance measurement apparatus and a method thereof. The apparatus comprises a voice coil motor, a controller, a computer, a translation stage and a CCD camera, the voice coil motor is arranged on a rack and is controlled by the controller, the voice coil motor comprises a grid ruler, a force sensor and a main shaft which are arranged in the voice coil motor, the controller is connected with the computer, and the controller drives the voice coil motor to linearly move along a vertical direction according to an instruction sent by the computer, and sends the displacement and load data obtained by the grid ruler and the force sensor to the computer in order to obtain the load-displacement relationship of a soft material to be measured; and the translation stage is arranged under the voice coil motor and is used for disposing the soft material, one side of the soft material is provided with the CCD camera, and the CCD camera is used for shooting the deformation image of the soft material before and after pressurization and transmitting the deformation image to the computer. The method uses the measurement apparatus to measure. The apparatus and the method have the advantages of compact structure, complete functions, high measurement precision and wide measurement range.

The invention provides a data processing method and system of a BACnet protocol stack in compatible with a Modbus protocol. The method comprises the following steps: an upper computer sends a UDP data frame to the internet when performing a read-write attribute operation on the BACnet protocol stack; after receiving the UDP data frame, the BACnet protocol stack resolves an object ID in the UDP data frame into an equipment address and a start address in a Modbus data frame, and resolves the current value of the UDP data frame into the data length and valid data in the Modbus data frame; the BACnet protocol stack sends the resolved information to a Modbus library; and the Modbus library sends the resolved information to each unit in a Modbus data frame format. By using the technical scheme provided by the invention, the free conversion between the Modbus protocol and a BACnet protocol can be performed.

The invention discloses a hydraulic piling machine pile controller which comprises a pile controller box body and a pile controller verticality adjusting mechanism connected with the pile controller box body. The pile controller box body comprises a control box body. A left swing arm hinge lug and a right swing arm hinge lug are arranged on the two sides of the control box body in a mirror-image mode. Clamping mechanisms are arranged on the left swing arm hinge lug and the right swing arm hinge lug. The pile controller verticality adjusting mechanism comprises a lower flange disc matched with the control box body in a rotating mode. The lower flange disc is connected with an upper flange disc through a periphery-arranged bolt. A longitudinal-shaft-surrounding verticality adjusting hydraulic cylinder is arranged on one side of the lower flange disc. One end of the longitudinal-shaft-surrounding verticality adjusting hydraulic cylinder is connected with a first longitudinal-shaft-surrounding verticality adjusting hydraulic cylinder hinge lug fixed at the bottom of the lower flange disc. The hydraulic piling machine pile controller is simple in structure, a left swing arm and a right swing arm are used for clamping and guiding a precast pile, the whole transmission structure stability and reliability are guaranteed, guiding performance is high, when a first pile is implanted, clamping locating is carried out through the pile controller, a guiding function is achieved during a precast pile implanting process, when a following pile is implanted, clamping of the ends of the two precast piles can be carried out through the pile controller, and coaxial connecting between the piles is carried out.

The invention relates to a reconfigurable optical mode converter. The reconfigurable optical mode converter comprises a first device, a first optical switch, a second optical switch, a third optical switch and a second device which are connected with one another sequentially; the second optical switch is connected with the first device and the second device; the first optical switch is connected with the third optical switch; and mode multiplexing / demultiplexing devices are adopted as the first device and the second device. According to the invention, a relatively simple principle in a traditional wavelength division multiplexing technology is applied to a mode multiplexing technology, so that the reconfigurable optical mode converter can be realized, and free conversion between differentwaveguide modes can be realized. On the basis of the same structure, an extensible mode selection exchanger is provided, and therefore, data selective exchange between any two modes can be realized, and problems such as flexible data network switching and data flow guide in an optical communication mode multiplexing technology can be solved, and the extensible mode selection exchanger is expectedto play an important role in implementing a flexible mode multiplexing optical communication network.

The method comprises: 1) respectively defining the field structure of the source call ticket and the field structure of the destination call ticket; 2) according to the field structure of source call ticket and the field structure of the destination call ticket, generating the field set of source call ticket and the field set of destination call ticket; according to the field set of source call ticket, resolving each field value of destination call ticket one by one; 4) according to the field set of destination call ticket, evaluating the field in the destination call ticket; 5) according to the field sequence, writing the field value in the destination call ticket into the call ticket records so as to complete the conversion of call ticket format.

The invention discloses an integral system of laser cornea operations. The system comprises a near-infrared pulse laser, a laser transmission device and a laser positioning device and is also provided with a laser wavelength conversion device, wherein the output end of the laser wavelength conversion device coaxially outputs basic near-infrared pulse laser and quintupled frequency ultraviolet pulse laser is obtained through frequency mixing; and the laser transmission device divides an optical path into a near-infrared branch optical path and a quintupled frequency ultraviolet branch optical path which are transmitted and controlled separately and are superposed to form an output optical path after passing through a dichroic mirror so as to be transmitted to a target position. The integral system separately controls two types of laser by properly using frequency doubling and mixing technology and using reasonable and artful light splitting and adjusting means; and therefore, the integral system perfectly realizes completing near-infrared and ultraviolet laser therapeutic means through making use of the same set of laser therapeutic equipment and realizes free conversion between both types of the laser, thereby simplifying operation procedures, greatly reducing operation time and possible hidden danger and bringing great convenience to both doctors and patients.

The invention discloses an air-replenishment and enthalpy-increment heat pump system based on solar heat storage defrosting. The system comprises a compression refrigerating subsystem and a solar heatstorage subsystem; when the system stores heat, the solar heat storage subsystem and the compression refrigerating subsystem are arranged in parallel; and when the system defrosts, the solar heat storage subsystem and the compression refrigerating subsystem are arranged serially. Compared with the prior art, the system can use solar energy and heating cycle afterheat for defrosting to synchronously achieve the technical effects of defrosting and energy conservation.

The invention relates to a PCIE_DMA data transmission device, which comprises: an FPGA module, wherein the FPGA module is provided with a PCIE hard core, is in communication connection with a host through a PCIE interface, and is configured with a DMA transmission module, a DMA channel is arranged between the DMA transmission module and a user layer logic interface, a channel mixing sub-module inthe DMA transmission module is configured to obtain data transmitted by a receiving sub-module and distribute the data transmitted by the receiving sub-module to the DMA channel for data transmission,and the channel mixing sub-module is also configured to receive the data transmitted by each DMA channel, integrate the data transmitted by each DMA channel and send the integrated data to a sendingsub-module. According to the invention, data is transmitted in and transmitted out through a DMA channel arranged between a channel mixing sub-module and a user layer logic interface, so that free conversion between single-channel data transmission and multi-channel data transmission is achieved, and the expandability of data transmission is improved.

The invention provides an electric vehicle jet heat pump air conditioning system and a control method thereof. The heat pump air conditioning system has the advantages of low energy consumption and high efficiency. On the premise of ensuring the comfort of passengers, the cruising mileage of an electric vehicle is increased under the condition of low temperature in winter. The electric vehicle jet heat pump air conditioning system comprises an electric secondary compressor, a four-way valve, an out-vehicle heat exchanger, an electronic valve, a reservoir, an ejector, an in-vehicle heat exchanger and a gas-liquid separator; the high-pressure port of the electric secondary compressor is connected with the main fluid inlet of the ejector after passing through the four-way valve, the in-vehicle heat exchanger, the electronic valve and the reservoir in sequence; the medium-pressure port of the electric secondary compressor is connected with jet fluid outlet of the ejector; the low-pressure port of the electric secondary compressor is connected through the gas-liquid separator, the four-way valve and the out-vehicle heat exchanger in sequence (the ejector is not passed under a low pressure, and is deleted). Compared with the conventional automobile air conditioner, the electric vehicle jet heat pump air conditioning system has the advantages of high efficiency of a heat pump system and very high practicability.

The invention discloses a method for bidirectional and free control on wettability of the surface of biological ceramic. The method comprises steps as follows: theoretical calculation is performed on biological ceramic structure characteristic values according to a wettability Wenzel model and a Cassie model, and basic characteristics of the hydrophilic or hydrophobic surface of the biological ceramic are determined and obtained; a microstructure model of the biological ceramic is designed according to the basic characteristics of the hydrophilic or hydrophobic surface of the biological ceramic; a short-wavelength picosecond laser with the repetition frequency lower than 1 MHz and the pulse width being in the range of 10-15 ps is selected as a laser source; laser control manufacturing is performed on surface characteristics of an arc-shaped groove microstructure and a columnar microstructure by the aid of the laser source. With the adoption of the method, bidirectional and free control from the super-hydrophilic surface of 10 degrees to the hydrophobic surface of 125 degrees can be performed on the wettability of the surface of the biological ceramic material, meanwhile, the method has the highly precise preparation controllability, and one material can have different wetting effects in different areas; besides, the technological method is easy to operate, low in manufacturing cost and wide in applicable material range, and no other auxiliary materials are required.

The invention provides a seismic exploration auxiliary data quality control method based on three-dimensional GIS, which belongs to the field of seismic exploration and development. According to the method of the invention, three-dimensional GIS is applied on seismic exploration auxiliary data quality control. In combination with high-resolution satellite images and aerial pictures, visual pattern monitoring is performed on the field seismic exploration auxiliary data, thereby improving a data processing efficiency and a data filing quality. The seismic exploration auxiliary data quality control method can improve SPS data processing efficiency and the data filing quality, and furthermore reduces time and manpower cost caused by actual exploration at the construction field.

The invention relates to an intelligent multifunctional horizontal directional drilling machine. The intelligent multifunctional horizontal directional drilling machine comprises a walking chassis, apower system, a rack rail, a driving platform, a drilling tool, a main engine, a push-pull system and a guide disk. The power system is installed on the walking chassis and provides power for the horizontal directional drilling machine. The rack rail is obliquely forwards and downwards fixed to the walking chassis. The driving platform moves along the rack rail. The drilling tool is mounted on thedriving platform to clamp the rear end of a drill rod. The main engine is mounted on the driving platform to drive the drilling tool to rotate, thereby driving the drill rod to carry out rotating feeding. The push-pull system is installed on the driving platform and includes an even number of hydraulic driving systems symmetrically disposed on both sides of the rack rail. The hydraulic driving systems include first hydraulic motors, reducers and gears, after the first hydraulic motors are decelerated by the reducers, the first hydraulic motors drive the gears to rotate, and the gears separately mesh with the rack rail. The guide disk is disposed on a chassis at the front of the main engine to guide the feeding direction of the drill tool.

The invention discloses an SIM (Subscriber Identity Module) card and a manufacturing method thereof. The SIM card comprises a card base and a 4FF SIM card module, wherein a 2FF SIM card sleeve is formed on the card base through cutting in a spearing way; a 3FF SIM card sleeve is formed on the 2FF SIM card sleeve through cutting in a spearing way; a first slot is formed in the 3FF SIM card sleeve; the difference between the thickness of the 3FF SIM card sleeve and the depth of the first slot is equal to the thickness of a 4FF SIM card; the card base under the first slot is in seamless connection with the 3FF SIM card sleeve; two layers of card slots are formed in the bottom surface of the first slot; the horizontal dimension of the first layer of card slot is equal to the overall dimension of a 4FF SIM card module, and the depth of the first layer of card slot is equal to the thickness of a carrier band of the 4FF SIM card module; the second layer of card slot is a position for accommodating the encapsulating compound of the 4FF SIM card module; the 4FF SIM card module is fixedly connected with the card base under the 4FF SIM card module. According to the SIM card, the 4FF SIM card, the 3FF card sleeve and the 2FF card sleeve are integrated onto one card base, and the international standards of the 2FF SIM card, the 3FF SIM card and the 4FF SIM card are met at the same time.

The present invention relates to a web service based adapter middleware method. The method comprises the following steps: a service adapter setting module specifying a target service type to a service encapsulating module; a service access module converting a source service to an atomic service and outputting the atomic service to a service parsing module; the service parsing module performing service parsing according to matched service type, and obtaining source data and outputting the source data to the service encapsulating module; and the service encapsulating module querying a service type library according to the target service type to obtain a service model corresponding to the target service type, and performing service encapsulating to obtain a target atomic service and output the target atomic service to a service publishing module for publishing. The system comprises the service adapter setting module, the service type library, the service access module, the service parsing module, the service encapsulating module and the service publishing module. The web service based adapter middleware system provided by the present invention employs a configurable technology and has good extensibility and versatility. Under the condition of not changing an architecture of the system, free conversion of multiple types of services can be implemented.

The invention discloses a pointer, an intelligent double-surface rotary watch and a manufacturing method of the intelligent double-surface rotary watch. The watch comprises a first belt loop, a second belt loop, a main body outer frame, an electronic piece bracket, a circuit board, a surface-A adhesive typeface and a piece of surface-B electronic display glass, wherein the main body outer frame, the surface-A adhesive typeface and the surface-B electronic display glass are encircled to form a cavity for accommodating the electronic piece bracket and the circuit board; an electronic piece of a conventional watch is arranged on the electronic piece bracket and is mechanically connected with a pointer on the surface-A adhesive typeface; the circuit board is connected with the surface-B electronic display glass; the first belt loop is connected with the main body outer frame on the end face of the watch in the twelve-clock direction in a rotatable manner; the second belt loop is connected with the main body outer frame on the end face of the watch in the six-clock direction in a rotatable manner. A watch body of the rotary watch is thin and light and is compatible with two watch functions which can be randomly switched, so that a watch wearing experience which cannot be achieved in the prior art can be brought to a user.

The invention discloses a heating and hammering composite device, and relates to the technical field of additive manufacturing. The heating and hammering composite device comprises a drive mechanism and a hammering mechanism. The drive mechanism has a first drive state and a second drive state. The hammering mechanism is in transmission connection with the drive mechanism, when the drive mechanismis in the first drive state, the drive mechanism is configured to drive the hammering mechanism to hammer accumulation layers, and when the drive mechanism is in the second drive state, the drive mechanism is configured to drive the hammering mechanism to heat the accumulation layers. According to the heating and hammering composite device, through the arrangement of the drive mechanism, electricenergy, kinetic energy and heat energy can be freely converted in a capacitance charge-discharge manner. After each accumulation layer is completed, treatment can be immediately carried out in a hammering and heating composite manner according to an accumulation path. Thus, the heating and hammering composite device has the beneficial effects of being easy to operate, convenient to construct, high in efficiency and the like, energy can be saved, and the cost can be reduced.

A multifunctional CCD-visualized composite tester for spraying agent ignition is disclosed. The tester is used for detecting ignition distances for spraying agents and inflammability of a mixture in a sealed space. The tester includes automatic injection, a stepwise type automatic ignition and testing bin, an inner baffle plate, a rack, auxiliary purging, and test control operation, display and outputting systems. The automatic injection controls start of mist spraying and stops the mist spraying according to feedback of a detecting system. A stepwise type automatic ignition system meets requirements on ignition distances and sealed-space ignition tests. An area array CCD collecting card synchronously acquires and outputs combustion and deflagration images and optical intensity. A working station feeds back sample injection, fuel gas and purging in real time. Automatic sample injection, result determination, alarming and test termination are achieved by the system. In an ignition distance test, a source of ignition is ignited by the stepwise type automatic ignition system and a mist spraying ignition distance is measured. In a sealed-space ignition test, the source of ignition is ignited, mist spraying is started to reach an ignition point or no combustion, and a purging system purges the test environment. The system is fully-automatically controlled. The tester is high in accuracy and has value for detection of spraying agents.

The invention relates to a locking structure for improving the vibration resistance of a steel ball locking type separation connector and the connector. The locking structure comprises a first lockingend and a second locking end, wherein the first locking end comprises a mandrel sleeve, a mandrel and a fixed lantern ring, and a spring is arranged between the front end of the mandrel and the fixedlantern ring; the front end of a spring pressing cylinder assembled outside the mandrel sleeve in a sliding mode is located between the mandrel sleeve and the fixing lantern ring, and a reset springenabling the spring pressing cylinder to move towards the stopping position is arranged between the mandrel sleeve and the spring pressing cylinder. The upper arc surface of the locking ball assembledin the through hole in the mandrel sleeve is stopped and limited by the inner circumferential surface of the spring pressing cylinder positioned on the stop position, and the lower arc surface of thelocking ball is stopped and limited by the conical reducing surface; when the first locking end and the second locking end are locked in an inserted mode, the spring pressing cylinder leaves the stopposition, the locking ball enters the inner ring groove of the second locking end along with the spring pressing cylinder, crosses the conical reducing face and enters the arc groove in the peripheryof the mandrel, and the upper arc face is limited by the inner ring groove. And the mandrel and the mandrel sleeve are circumferentially stopped from rotating.

The invention discloses an independent controllable intake-exhaust two-stroke (capable of being changed into four-stroke) internal-combustion engine system which is used for solving the defects including low fuel efficiency, large emission pollution, participation of engine oil in combustion and the like of a two-stroke internal-combustion engine by applying the independent controllable intake-exhaust system, so that the energy is saved, the emission is reduced, the pressurized working conditions of the two-stroke internal-combustion engine are realized, the defect that the power per liter of a four-stroke internal-combustion engine is lower than that of the two-stroke engine is solved, and a completely new function of freely converting between the two strokes and the four strokes in one internal-combustion engine is creatively realized. Moreover, the independent controllable intake-exhaust two-stroke internal-combustion engine system is simpler in structure, lighter, provided with theoretical maximum power which is twice that of the conventional four-stroke pressurizing internal-combustion engine, integrated with the advantages of the two-stroke internal-combustion engine and the four-stroke internal-combustion engine and capable of making up the defects of the two-stroke internal-combustion engine and the four-stroke internal-combustion engine, and therefore, the independent controllable inlet-exhaust two-stroke internal-combustion engine system is an internal-combustion engine system with a completely new principle and a completely new manufacturing method, and a novel power choice is provided for the vehicle industry and other equipment manufacturing industries.

The invention discloses a multi-drill-bit electric drill for construction. The multi-drill-bit electric drill comprises an electric drill body and a drill bit seat. The drill bit seat is arranged at the left end of the electric drill body and provided with a fixing ring. Drill bits are arranged in the fixing ring. A groove is formed in the electric drill body. A protective cover is arranged in the groove and provided with a graduated scale. A front handle is connected to the lower end of the electric drill body. A drill bit box is arranged in the front handle. A sealing cover is arranged at the lower end of the drill bit box. A slide rail is arranged at the right end of the electric drill body. A movable handle is connected to the lower end of the slide rail. A power line is connected to the lower end of the movable handle. The multi-drill-bit electric drill for construction has the advantages that multiple drill bits are mounted by the rotatable drill bit seat, free switching of the drill bits is achieved, holes of different sizes can be drilled, the electric drill is allowed to be convenient to use, construction efficiency is increased, and the electric drill is worthy of popularization.

The invention discloses a multifunctional smart gateway. The middle of the smart gateway is provided with a boss. The boss is equipped with an Ethernet network interface, a USB2.0 interface and an EnOcean 868MHz interface in sequence. A platform on one side of the boss is equipped with RS485 interfaces and digital output interfaces. A platform on the other side of the boss is equipped with a KNX / EIB interface at one end and a 220V AC power interface at the other end, and is equipped with resistive sensor input interfaces, analog / digital input interfaces, a 24V DC power interface and analog output interfaces side by side and in sequence in the middle. The multifunctional smart gateway of the invention is provided with multiple standard interfaces, and free switching between a variety of standard protocols can be realized. Moreover, a visual KNX graphical monitoring interface can be created quickly to realize visual interface control on a smart terminal and remote access monitoring of KNX.

The invention discloses an integrated pipe column for steam injection, leakage prevention, well backwashing and production of a thermal production well. The integrated pipe column comprises an oil pipe, a lifting pump, a downhole multifunctional control valve and a sealing plug. The sealing plug is sleeved with a sealing barrel and a downhole positioning tool, wherein the lower end of the sealingbarrel is connected with the upper end of the downhole positioning tool through a threaded nipple; a positioning locking claw is arranged on the outer wall of the downhole positioning tool, the lowerend of the downhole positioning tool is fixed on the sealing plug through a shear pin, a horse tooth buckle is arranged on the outer wall of the positioning locking claw, the horse tooth buckle of thepositioning locking claw is oppositely buckled with a horse tooth buckle in a packer for well staying, and the lower end of the packer is connected with a sand filtering pipe. The problems that threetimes of operation are needed for steam injection, back flushing and production, and time and labor are wasted are solved, and the problem that the temperature of an oil layer is reduced due to backflushing of an existing steam injection thermal production well is solved, so that the steam injection effect is ensured.