38results about How to "Reduce distance requirements" patented technology

The invention discloses a continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and a casing fracturing method, which are suitable for application in vertical wells and horizontal wells in the petroleum industry, in particular for sectional fracturing of unconventional oil-gas reservoir horizontal wells such as tight sandstone wells. The fracturing pipe column comprises a safety joint, a centralizer, a hydraulic jet tool and a reverse circulation valve, which are connected to a continuous oil pipe in sequence, wherein a mechanical continuous oil pipe fracturing packer is connected below the reverse circulation valve. The sectional casing fracturing method is used for placing the fracturing pipe column provided with the mechanical continuous oil pipe fracturing packer into a casing in a well through the continuous oil pipe; and by the method, a fracturing well section closest to the bottom of the well is fractured at first, and then the fracturing well section is packed by using the mechanical continuous oil pipe fracturing packer. By the continuous oil pipe sectional sand-blasting perforation casing fracturing pipe column and the casing fracturing method, a sand stopper is not needed as an isolation section, so that the sand stopper is not needed to be subjected to back flushing, the production cost is reduced, and multi-layer section fracturing operation for a short horizontal well section or straight well section can be realized.

The invention discloses a bridge anti-collision guardrail and a construction method thereof, Collision barriers include columns, An upper rail and a low rail are respectively sleeved with a buff cylinder and a swirling ring on that upright column, the two ends of the upright column are fix on the upper rail through a limiting seat, the lower rail is provided with a fixing ring on the upright column, the fixing ring is in contact with the limiting seat located below, an L-shaped mounting plate is provided on the upper rail, an L-shaped mounting plate is provided with an anti-collision plate, and a cushioning guardrail plate is provided on the anti-collision plate; The construction method comprises the following steps: (a) route marking; (b) Post positioning; (c) Installation of lower railings; (d) installation of an upper railing; (e) Installation of cushion shields; (f) Installation of bumper plates; (g) Installation of remaining uprights. The anti-collision guardrail of the inventionhas the advantages of high stability, convenient installation, cushioning and anti-collision, high safety, easy operation, orderly and reasonable construction, fast and convenient construction, time and labor saving, low construction intensity and convenient maintenance in the later period. The invention has the advantages of high stability, convenient installation, cushioning and anti-collision,high safety, easy operation, orderly and reasonable construction method, fast and convenient construction, and low construction intensity.

The invention discloses an automatic pricing machine. The automatic pricing machine comprises a support piece used for placing goods, a camera used for carrying out image capture on the outer surfaces of goods, and an image processing device used for identifying bar code regions on pictures shot by the camera and reading bar code information. The image processing device is connected with the camera. According to the invention, by arranging the camera and the image processing device, through once image capture and processing of images, one or more commodities can be priced, thereby facilitating improving of code scanning efficiency, reduction of labor intensity of cashiers, and reduction of payment time of customers. Meanwhile, production cost of commodity manufactures will not be increased; identification effects are quite good; the distance requirements between the commodity and the camera are reduced compared with the distance requirements between the commodity and a code scanning device in the prior art; and scanning missing phenomena are reduced.

The invention relates to a water curtain producing device. The water curtain producing device comprises a water storage device and a water delivery device, wherein the water storage device comprises a cylindrical water tank; the water delivery device comprises a water pump, and the water pump is connected with a pond by a water pumping pipe; the water pump is communicated with the right end of the water tank by a water delivery pipe; three brackets are fixedly arranged respectively at the left end, the right end and the middle of the water tank, the left end of the water tank is connected with a servo motor by a coupling, and water nozzles are arranged on a master pipeline of the water tank. The water curtain producing device has the advantages of reasonable structural design, low cost, simplicity in operation and control, high automation degree and the like. A dense and tidy water curtain can be produced. Compared with a mode of producing a silver curtain through spraying mist from the upper part to the lower part, the water curtain producing device has the advantages that water resources and power are saved, the clearness degree of the silver curtain is increased, the requirement on the abundant degree of the surrounding water resources is lowered, the space is saved, the water is prevented from being splashed on the bodies of neighboring people, and the requirement on distances between lookers and the silver curtain is lowered.

The invention relates to an auxiliary nozzle air path system for a bidirectional wefting insertion air jet loom. The outer end of a first air inlet and the outer end of a second air inlet in a solenoid valve seat are correspondingly communicated with a first air bag air outlet and a second air bag air outlet in an air bag respectively. A first air channel and a second air channel are arranged in the solenoid valve seat and are isolated and not communicated. A first solenoid valve and a second solenoid valve are mounted at the two ends of the solenoid valve seat respectively, the inner end of the first air inlet is connected with the first air channel through the first solenoid valve, and the inner end of the second air inlet is connected with the second air channel through the second solenoid valve. First jet air outlets and second jet air outlets are formed in the solenoid valve seat, the number of the first jet air outlets and the number of the second jet air outlets are identical with the number of auxiliary nozzles, the inner ends of the first jet air outlets are communicated with the first air channel, the inner ends of the second jet air outlets are communicated with the second air channel, and the outer ends of the first jet air outlets and the outer ends of the second jet air outlets are communicated with air inlets of first jet pipes and air inlets of second jet pipes in the auxiliary nozzles respectively. The auxiliary nozzle air path system for the bidirectional wefting insertion air jet loom is compact and reasonable in structural layout, short in air supply path and capable of stabilizing high-speed air flow and improving the quality of textiles.

The invention discloses an intelligent remote control camera stand, which comprises a bracket, a camera bearing platform, a rotating mechanism arranged on the bracket and a remote controller for controlling the rotating mechanism, wherein the rotating mechanism comprises a rotating motor, a motor driving module, a controller and a control signal receiving module; an output shaft of the rotating motor is connected with a connecting shaft of the camera bearing platform; the signal input end of the rotating motor is sequentially connected with the motor driving module and the controller; the controller is connected with the control signal receiving module, and is used for outputting a driving signal to the motor driving module after receiving a control signal from the remote controller by virtue of the control signal receiving module; the rotating motor is driven by the motor driving module to rotate to drive the camera bearing platform. According to the intelligent remote control camera stand, the rotating mechanism can be remotely controlled by the remote controller to be regulated, so that an angle can be conveniently controlled, a requirement on the distance between a user and the camera stand is lowered, and the angle can be timely and automatically regulated during photographing.

The invention relates to a super-luminance single-mode laser for realizing outer cavity coupling between a single-mode active fibre core and a multi-mode active fibre core, belonging to the field of high-power optical laser and comprising a pumping source and a double-cladding active optical fibre. The double-cladding active optical fibre comprises a single-mode active rare earth doped fibre core (4), a multi-mode active rare earth doped fibre core (6), an inner cladding (2) and an outer cladding (3). A diffraction optical element is arranged at one end of the double-cladding active optical fibre without plating the highly reflective membrane (8) with the laser wavelength; the diffraction optical element consists of a first beam splitter (91), a second beam splitter (92) and a combiner (93); and the working wavelength of the diffraction optical element is the corresponding laser wavelength. The invention realizes outer cavity coupling between the single-mode active rare earth doped fibre core and the multi-mode active rare earth doped fibre core, reduces the requirement of the distance between the surfaces of the single-mode active rare earth doped fibre core and the multi-mode active rare earth doped fibre core, reduces the difficulty of the process, and has the advantages of high yield, high-efficient pumping, and the like.

The invention discloses a high-layer bookshelf book taking device which solves the problems that a book cannot be easily taken out due to short distance between the book and the top of a bookshelf, and wrong books are taken as a book borrower is far away from the books and cannot clearly see call numbers and book names in the book taking process of an existing high-layer bookshelf book taking device. The high-layer bookshelf book taking device comprises a vertical rod and a hollow cross rod vertically connected with one end of the vertical rod, a book hooking device is arranged at a free end of the cross rod, a limit device is arranged on the book hooking device, and a book hooking plate retracts and extends by the aid of the limit device. The high-layer bookshelf book taking device has the advantages that the books are conveniently taken, book information can be clearly distinguished and the like.

The embodiment of the invention discloses a semiconductor device and a manufacturing method thereof. The semiconductor device comprises a substrate, an epitaxial multilayer structure formed on the substrate, and a gate structure formed on the epitaxial multilayer structure, wherein the gate structure is embedded in the epitaxial multilayer structure, the gate structure sequentially comprises a gate channel layer, a gate modulation layer and a gate metal layer, the material of the gate modulation layer contains an aluminum component, and the content of the aluminum component is a variable. Thegate modulation layer can effectively avoid the problem that the on-resistance is increased due to the height difference between the gate channel layer and the surrounding channel layer, the thresholdvoltage of the semiconductor device is accurately controlled, and the uniformity of the threshold voltage and the electron mobility are improved.

The technical scheme of the invention discloses a range hood gesture recognition method. The range hood gesture recognition method comprises the following steps: S1, encoding a preset infrared signalaccording to an encoding mode and a preset time sequence period; S2, sending the preset infrared signal according to the time sequence period, wherein the preset infrared signal carries an anti-interference algorithm and time sequence period information; S3, receiving and analyzing the preset infrared signal, and obtaining a gesture state by identifying the time sequence period information; and S4, receiving the preset infrared signal, and judging the gesture direction by identifying the time sequence of the preset infrared signal. By means of the range hood gesture recognition method, the requirement for the AB probe distance can be reduced, and the anti-jamming capability of gesture recognition can be improved, and the success rate of gesture recognition can be increased.

A single-mode active fiber core external cavity coupled multi-mode active fiber core ultra-brightness single-mode laser belongs to the field of high-power fiber lasers, and it includes a pump source and a double-clad active fiber; the double-clad active fiber includes A single-mode active rare-earth-doped fiber core (4), a multi-mode active rare-earth-doped fiber core (6), inner cladding (2) and outer cladding (3); A diffractive optical element is placed on one end of the high reflection film (8) of the wavelength, and the diffractive optical element is composed of three parts: the first beam splitter (91), the second beam splitter (92) and the beam combiner (93); The operating wavelength of the optical element is the corresponding laser wavelength. The invention realizes the external cavity coupling between the single-mode active rare-earth-doped fiber core and the multi-mode active rare-earth-doped fiber core, and reduces the gap between the surface of the single-mode active rare-earth-doped fiber core and the multi-mode active rare-earth-doped fiber core. The distance requirement reduces the difficulty of the process, and has the advantages of high yield and high efficiency pumping.

The invention belongs to the technical field of printed circuit board manufacturing, and discloses a thick copper backboard and a manufacturing method thereof. The method comprises the steps: etching a circuit on a thick copper layer core board of which the inner layer copper thickness is greater than or equal to 105 microns m in advance; pressing the thick copper layer core board for the first time; according to the expansion and shrinkage data of the laminated thick copper core board, obtaining pre-release expansion and shrinkage of other layers of core boards, and etching lines of other layers of core boards; and pressing a required PCB structure together. According to the invention, the thick copper layer core board is firstly pressed for one time so that a glue filling amount in a pressing process is reduced, the slippage of the pressed core board caused by the excessive glue filling amount in the pressing process is avoided, and the requirement on the distance from the hole to the inner layer pattern can be reduced; the thick copper layer core board is firstly pressed for one time so that interlayer holes caused by the too much filling glue due to too large thickness of interlayer copper during pressing can be reduced; meanwhile, the manufacturing process is simple, the percent of pass is high, and manufacturing of the backboard with the inner layer copper thickness larger than 105 microns can be achieved.

The invention provides a multi-speed pushing-in machine, an air conditioner outdoor unit flexible production line and a production method of the air conditioner outdoor unit flexible production line. The multi-speed pushing-in machine comprises a rack, and a conveying mechanism, a blocking mechanism and a feeding structure arranged on the rack, the conveying mechanism comprises a plurality of conveying rollers arranged in the length direction of the rack and a driving assembly connected with ends of the conveying rollers to drive the plurality of conveying rollers to rotate synchronously, the blocking mechanism comprises a baffle located between two adjacent conveying rollers, the bottom of the baffle is connected with a lifting assembly used for lifting the baffle to be higher than or lower than the conveying rollers, and the feeding structure comprises a pushing part and a moving assembly for pushing a pushing rod to move in the length direction of the rack. Workpieces are conveyed through the roller type conveying structure, feeding and pushing of the workpieces can be completed through the feeding structure, the application range is wide, the structure is simple and reasonable, the cost can be effectively reduced, the work efficiency is improved, and the risk that operators and maintenance personnel are injured is reduced.

The invention discloses an easy-to-implement traffic signal lamp adaptive method, and belongs to the technical field of traffic safety. The method comprises the following steps: S1, initializing a system; S2, collecting traffic flow data; S3, distributing the duration of each traffic light at the intersection; S4, carrying out road condition judgment; and S5, controlling a traffic light system. The low-power-consumption single-chip microcomputer, the wireless communication module and the camera are installed on the traffic light, the duration of all green lights at the intersection can be adjusted in a self-adaptive mode according to the traffic flow, the traffic light can be automatically turned off under specific conditions, the traffic condition is improved, meanwhile, the traffic light is more reasonably used, the traffic light or the road does not need to be constructed and reformed in the whole installation process, implementation is easy, and cost is low; the camera is combined with an image processing program to measure traffic flow data so that the traffic flow data can be accurately measured; and the traffic lights are communicated through the wireless communication module, and the requirement for the distance between the traffic lights is not high.

The invention provides a gamepad. Through the gamepad, operation flexibility and consistency can be greatly improved. The positions between a direction key and all trigger keys are each provided with a sliding pressing mechanism, and all the sliding pressing mechanisms comprise through holes and sliding stand columns arranged in the through holes in a sliding mode; the through holes are located above the trigger keys, and the sliding stand columns are located between the direction keys and the corresponding trigger keys; any sliding stand column slides in the corresponding through hole by pressing the direction key, the trigger key corresponding to the sliding stand column is vertically pressed, so that the trigger key makes contact with a trigger circuit board to trigger a corresponding function. When the direction key is pressed, pressing force is transferred to the trigger keys through perpendicular sliding in the vertical direction of the sliding stand columns, and then the pressing force borne by the trigger keys is vertical force; accordingly, the operation flexibility of the gamepad can be greatly improved. Besides, the directions of the pressing force borne by the trigger keys are all vertical directions, and therefore operations of all keys can be consistent.

The invention discloses a networking system applied to a temperature measurement terminal of a high-voltage power transmission line, and the networking system divides the temperature measurement terminal into two parts, i.e., a first-stage temperature measurement terminal and a second-stage temperature measurement terminal, and the second-stage temperature measurement terminal transmits collected temperature data to the first-stage temperature measurement terminal connected with the second-stage temperature measurement terminal. And the temperature is uploaded to the gateway by the first-stage temperature measurement terminal and finally sent to the cloud server. Since the distance between the temperature measuring terminals is usually short, the distance requirement of wireless communication can be greatly reduced, and the first-stage temperature measuring terminal only uploads the temperature data of the first-stage temperature measuring terminal and the temperature data of the second-stage temperature measuring terminal connected with the first-stage temperature measuring terminal, so that the number of nodes is small, and the real-time performance of data transmission is high. And finally, the temperature data is uploaded by using the first-stage temperature measurement terminal, so that no additional hardware is needed, and no additional cost is generated.

The invention discloses a water ring sealed mixed flow pump, which comprises a pump body, an impeller, a pump cover, a back cover, a bearing body and a pump shaft. The pump cover and the rear cover are respectively installed on the pump body for sealing the pump body. The bearing body is installed on the back cover. The pump shaft passes through the bearing body. The back cover penetrates the inside of the pump body. The impeller is mounted on the end of the pump shaft and is located in the pump body. The impeller is a hub structure consisting of a shaft, blades and rims. A sealing end face is formed between the rim and the pump cover. Tooth protrusions are arranged on the sealing end surface between the wheel rim and the pump cover. There are multiple tooth protrusions, which are arranged alternately along the circumference of the wheel rim. The sealing end surface between the pump cover and the wheel rim is provided with tooth grooves matching with the tooth protrusions. When the invention works, the water in the tooth groove is driven to rotate at a high speed by the rotating tooth protrusion to form a water wall to realize sealing.

The invention relates to an end surface contact type rotary electric connector which comprises a fixed insulating plate and a rotating insulating plate. The fixed insulating plate and the rotating insulating plate are arranged coaxially and opposite to each other; one side of one of the fixed insulating plate and the rotating insulating plate, which faces to the other one, is provided with a circular groove which shares the same axis, and the one side of the other one is provided with an elastic contact terminal; a conductive slip ring is fixed and embedded in the circular groove; the elastic contact terminal is provided with a connecting part and a contact part; the connecting part is fixed and matched with the insulating plate provided with the elastic contact terminal; the contact part is matched with conductive slip ring in a sliding and pressing way when the rotating insulating plate rotates along with a corresponding rotating component; and the contact part is raised from the surface of one side of one insulating plate provided with the contact part, which faces to the other insulating plate. The end surface contact type rotary electric connector solves the problem that the existing rotary electric connector can not be applied to the occasion that the distance between a fixed component and a rotary component which need to be connected is short.

The invention provides a non-hinge type auxiliary airbag support and relates to an automobile airbag support. The non-hinge type auxiliary airbag support comprises a support frame, a turnover plate Iand a turnover plate II, wherein the outer side of the support frame, the outer side of the turnover plate I and the outer side of the turnover plate II are connected with an IP body, and the tear line of the IP body is located between the turnover plate I and the turnover plate II; the support frame is connected with the turnover plate I and the turnover plate II through positioning grooves respectively, and in the positioning grooves, the distances between the support frame and the turnover plates are larger than or equal to the maximum travel distance of the turnover plates needing to moveupwards in the overturning process; hanging hook holes A are formed in the support frame, hanging hook holes B with the lengths larger than those of the hanging hook holes A are formed in the turnoverplates respectively, an auxiliary airbag is hooked into the hanging hook holes A and the hanging hook holes B through hanging hooks, and the distance between the lower edge of each hanging hook holeB and the corresponding hanging hook is larger than or equal to the maximum travel distance of the turnover plates needing to move upwards in the overturning process. By means of the non-hinge type auxiliary airbag support, the phenomenon that the distance between the auxiliary airbag and the IP body is too small, so that the auxiliary airbag is exploded to lose efficacy can be avoided, and the non-hinge type auxiliary airbag support has the advantages of being good in reliability, simple in structure and low in cost, and is easy to apply and popularize.

The embodiment of the invention discloses a distribution task information processing method and device, and the method comprises the steps: receiving an order amount supplement request submitted by a first distribution task executor, and enabling the order amount supplement request to carry target handover time information and target handover place information; determining a required centralized distribution range according to the target handover place information; determining at least one target transaction order meeting conditions according to the target handover time information and the centralized delivery range; and according to the target transaction order, generating a delivery task of an order amount supplement type, and allocating the delivery task to a second delivery task executor, so that after the second delivery task executor delivers goods corresponding to the target transaction order to the target handover place, the first delivery task executor carries out end delivery in the centralized delivery range. According to the embodiment of the invention, the distribution efficiency can be improved.

The invention provides a low-profile radial-line helical antenna comprising a coaxial line, a first metal layer, a first dielectric substrate, a second metal layer, a second dielectric substrate, and a third metal layer. The layers are laminated successively. A first helical line is formed at the first metal layer; a second helical line that is opposite to the first helical line and is coupled with the first helical line is formed at the second metal layer; the third metal layer is grounded; and the coaxial line passes through the first metal layer, the first dielectric substrate, the second metal layer, the second dielectric substrate, and the third metal layer successively. An outer conductor of the coaxial line is connected with the third metal layer electrically; and an inner conductor of the coaxial line is connected with an initial point of the first helical line electrically. According to the invention, on the basis of coupling between the second helical line and the first helical line, a phase requirement on the reflection path of the first helical line can be reduced and thus the distance requirement between the first helical line and the third metal layer can be reduced; the antenna size is reduced; and the low-profile radial-line helical antenna is realized.