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

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 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 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 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 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.

The invention provides a fingerprint identification structure and a manufacturing method thereof. The fingerprint recognition structure includes: a base substrate, a plurality of first touch electrodes and a plurality of second touch electrodes formed on the base substrate, and a plurality of first touch electrodes and a plurality of second touch electrodes criss-crossed ; A plurality of light-sensing patterns are correspondingly disposed at positions where the first touch electrodes intersect with the second touch electrodes, and separate the second touch electrodes from the first touch electrodes. In the present invention, the photosensitive pattern between the first touch electrode and the second touch electrode constitutes a photodiode structure. When the light reflected by the finger passes through the light-emitting diode, the light-emitting diode can generate current to increase the signal difference at the valley and ridge position of the fingerprint, so that the fingerprint can be identified more sensitively, thereby reducing the contact between the finger and the first touch electrode, The requirement for the distance between the second touch electrodes enables the subsequently deposited protective layer to be made thicker, so as to increase the structural stability of the device.

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.

Embodiments of the present invention disclose a semiconductor device and a method for manufacturing the same. The semiconductor device includes: a substrate, an epitaxial multilayer structure formed on the substrate, and a gate structure formed on the epitaxial multilayer structure , the gate structure is embedded in the epitaxial multilayer structure, the gate structure sequentially includes a gate channel layer, a gate modulation layer and a gate metal layer, and the material of the gate modulation layer contains aluminum components, and the aluminum component content is variable. The gate modulation layer of the present invention can effectively avoid the problem of increasing on-resistance caused by the height difference between the gate channel layer and the surrounding channel layer, realize the precise control of the threshold voltage of the semiconductor device, and improve the threshold value Voltage uniformity and electron mobility.

The application provides a double-speed pusher, a flexible production line for an air-conditioner external unit and a production method thereof. The double-speed pusher includes a frame, a conveying structure, a blocking structure, and a feeding structure arranged on the frame; the conveying mechanism includes a A plurality of conveying rollers arranged in the length direction of the frame and a drive assembly connected to the ends of the conveying rollers to drive the synchronous rotation of the conveying rollers; the blocking mechanism includes a baffle between two adjacent conveying rollers, and the baffle The bottom of the bottom is connected with a lifting assembly for lifting the baffle to be higher or lower than the conveying roller; the feeding structure includes a pushing part and a moving assembly that pushes the push rod to move along the length of the frame. The workpiece is transported through the roller conveying structure, and the loading and pushing of the workpiece is completed through the feeding structure. It has a wide range of applications and a simple and reasonable structure, which can effectively reduce costs, improve work efficiency, and reduce the risk of injury to operators and maintenance personnel. .

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 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 discloses an electric tool and an electric hammer special drill bit and a straight shank drill integrated interchangeable locking device thereof. The electric hammer special drill and straight shank drill integrated interchangeable locking device includes: electric hammer special drill bit clamping and locking mechanism , including rotating sleeve, drill clamp main body, positioning beads, ferrules, spring fixing parts, drill clamp springs and positioning bead baffles; jaw locking mechanism, including ring gear and clamp jaws threaded with the ring gear, drill clamp main body There is an inclined slideway for the jaw to move, and the inclined slideway communicates with the fixed channel of the drill bit; the self-locking mechanism of the jaw is fixedly connected with the ring gear, and its end facing the ferrule has a positioning structure that cooperates with the ferrule; The ferrule suspension mechanism includes a self-locking position piece fixing frame set on the rotating sleeve, and an elastic positioning piece arranged on the self-locking position piece fixing frame. The ferrule has a locking groove and a pause groove that cooperate with the elastic positioning piece . The above-mentioned locking device improves the connection accuracy, solves the problem of wild matching, and improves the service life.

The invention provides a moving combined-type device for light-weight objects. The device comprises a rack, a conveying rolling path device disposed on the rack, a moving device and a jacking device, wherein the moving device is installed between supporting legs of the rack and comprises a moving device motor base, a straight-line guide rail, a straight-line slide block, the jacking device, a moving frame, a moving air cylinder, an air cylinder floating joint and a moving air cylinder support; the jacking device is installed on the moving frame and comprises an installation plate, a jacking air cylinder, a straight-line bearing, a guide rod and a jacking frame; and the conveying rolling path device comprises a drive motor reduction gear, a main chain wheel, a chain, a left side plate, a right side plate and a forced dual-chain wheel roller. The device provided by the invention is applicable to operations such as moving and conveying, and unqualified product removal of the light-weight flat-bottom rigid objects. The device has the advantages that operations are quick; actions are gentle and smooth; and the conveyed objects are not damaged, etc.

The invention discloses a double-stage reinforced soil abutment with closely arranged reinforcement materials, comprising a road-bridge connection support system, an upper-level reinforced soil abutment system and a lower-level reinforced soil abutment system, and the road-bridge connection support system includes a road surface structure , bridge superstructure, closely spaced reinforced soil approaches and pedestals, the pavement structure is located on top of the bridge superstructure and closely spaced reinforced soil approaches, and the bridge superstructure and closely spaced reinforced soil approaches are arranged in parallel; the superior The reinforced soil abutment system is set on the upper part of the lower reinforced soil abutment system, and the reinforcements inside both are closely arranged. The invention also provides a construction method of the double-stage reinforced abutment. The beneficial effects of the present invention are: the tight arrangement of reinforcements can effectively increase its bearing capacity, the improvement of the previous single-stage abutment into a double-stage abutment can effectively reduce the overturning moment, improve the external stability of the structure, and the use of anchoring devices can effectively Improve stability, reduce deformation during service, and lay the foundation for the expansion of its application range.

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 invention discloses a backpack type projection apparatus. The apparatus comprises a backpack, the backpack is internally provided with a projector and at least one reflector, the front wall of the backpack is provided with a projection screen, the transverse extending direction of the reflector is consistent with the transverse extending direction of the projection screen, multiple support rods are inserted into the backpack, the extending direction of the support rods is consistent with the transverse extending direction of the reflector, the multiple support rods support the backpack, the two sides of the reflector are connected with the side wall of the backpack through a telescoping assembly, light emitted by the projector is projected on the projection screen after being reflected by the reflector, after the support rods are taken away from the backpack, the backpack is compressed towards the direction of the side wall, and the reflector is turned by 90 degrees to be parallel to the side wall. The backpack type projection apparatus has the following advantages: the projector, the reflector and the projection screen are integrated in one backpack, the volume occupied by projection equipment is reduced, and the carrying is facilitated; and when the projection equipment is not used, the backpack is compressed towards the direction of the side wall and the reflector is reversed by 90 degrees to be parallel to the side wall, such that the occupied space is smaller, and the carrying is more convenient.