54results about How to "Reduce layout density" patented technology

The invention relates to a novel non-pressure irrigation rig. The water outlet valve of a water supply tank is opened, irrigation water flows into a water level control tank, when the water level of the tank is higher than h1, an intake tube is submerged, air suction is changed into water inflow until the water level in the intake tube is equal to the water level in the water supply tank, the irrigation water does not flow into the water level control tank, the water level of the tank is stabilized at the water level slightly higher than h1, the irrigation water enters into a filling area at the upper part in a U-shaped slot by virtue of a permeable cover plate and a sand inverted filter from the bottom in the U-shaped slot of the irrigator, a soil saturation water layer which is at the same height of the water level of the water level control tank and is lower than the upper edge of the U-shaped slot, water of the saturation water layer rises to the root layer of a crop in a capillary water way, a crop consumes water to cause the water level of the water level control tank to be lower than h1, the intake tube comes out of water surface, air is sucked in air bubbles, the irrigation water flows into the water level control tank, the water level rises to submerge the intake tube again, the crop consumes the water to cause the water supply process to be repeated, the output of supplying water is increased or reduced along with water consumption, irrigation is adaptive, and the irrigation rig is simple to operate and is convenient to use.

The invention discloses a hybrid navigation method, device and system based on laser radar and light reflection boards. The method comprises the following steps: acquiring point cloud data of the laser radar; calculating pose information of the carrier according to the point cloud data of the laser radar; and formulating a motion strategy, and driving the carrier to move, wherein the step of calculating the pose information of the carrier according to the point cloud data of the laser radar comprises the steps of judging whether the point cloud data of the laser radar includes at least three special data accordant with return signal features of the light reflection boards, if so, calculating pose information of the carrier according to the special data, otherwise, directly calculating poseinformation of the carrier according to the point cloud data. According to the method, the laser radar is cooperated with the light reflection boards in use, the accurate position of the carrier canbe calculated according to the special data with relatively high strength returned by the light reflection boards, the position can be further corrected when the environmental scene is changed hereby,and the light reflection boards can be flexibly distributed according to requirement, so that the distribution density of the light reflection boards is decreased, and a dead corner on which the carrier is lost is not formed.

The invention relates to a straw chopper, comprising a distributing roller, a cropping roller, a rack and a chain type dissepiment conveyor; the front end of the rack is provided with a feed inlet and the rear end thereof is provided with a discharge hole; the distributing roller is arranged above the feed inlet; a cross cutting tooth and a circumferential cutting tooth are arranged on the distributing roller; the cropping roller is arranged at the oblique and lower part of the rear side of the distributing roller; the outer circle of the cropping roller is provided with a plurality of cutting knives; the lower part of the cropping roller is provided with a particle screening plate which consists of a frame and a plurality of screening pieces; each screening piece is arranged in the frame in parallel and a gap is left between the two adjacent screening pieces; a pressure plate is arranged between the distributing roller and the cropping roller; the middle shafts of the distributing roller and the cropping roller are connected with a power device; the chain type dissepiment conveyor is arranged at the lower part of the feed inlet and a roller of chain type dissepiment conveyor extends to the bottom of the front end of the distributing roller. The straw chopper of the invention has the advantages of compact structure, reasonable layout, reliability and safety, even crashing, high efficiency and high yield and can realize continuous feeding.

The invention discloses a spiral high-pressure jetting wing-enlarged stirring bottom-expanded stiff composite pile, a construction method thereof and a drilling machine. According to the stiff composite pile, the construction method thereof and the drilling machine, the technical problems of relatively low bearing capacity, high cost, certain quality defects and the like of an existing stiff composite pile are solved. The spiral high-pressure jetting wing-enlarged stirring bottom-expanded stiff composite pile comprises an outer pile body, an inner core pile body and a bottom-expanded base, wherein the outer pile body, the inner core pile body and the bottom-expanded base are combined into a whole, the strength composite pile further comprises a prefabricated pile tip installed at the lowerend of the inner core pile body, and the inner core pile body and the prefabricated pile tip are planted into the center of the outer pile body. According to the stiff composite pile, the construction method thereof and the drilling machine, firstly, the outer pile body is subjected to high-pressure grouting injection to carry out first-stage extrusion and compaction on pile periphery soil, whenguncreting is carried out on center concrete through the bottom-expanded base, second-stage extrusion and compaction are carried out on the outer pile body, third-stage extrusion and compaction are carried out on the outer pile body in the process of planting the inner core pile body, and the outer pile body which are formed through the three stages of extrusion and compaction is extruded and compacted with the surrounding soil layer, and the resistance of the side of the pile is greatly improved; and secondly, the three stages of extrusion and compaction are carried out on the bottom-expandedconcrete through high-pressure grouting bottom expanding, concrete guncreting bottom expanding and the prefabricated pile tip, so that the resistance of a pile end is further improved.

The invention discloses a vehicle-mounted laser radar scanning target arrangement and measurement method. The method comprises the following steps of (1) determining the shape and specification of a target, (2) laying a survey mark, (3) target control point measurement, (4) target plane control measurement, and (5) target elevation control measurement. Compared with the prior art, the method has the advantages that (1) the target laying density is reduced by 30%, and the working efficiency is improved by 40%; (2) the problem of inconsistent uplink and downlink separated scanning precision is solved, and the reliability of the point cloud data is improved; and (3) new technology and new process research is carried out, a high-speed and efficient surveying and mapping production system is constructed, the highway reconstruction and extension surveying and mapping production capacity is effectively improved, and the ultrahigh precision requirements that the error in the pavement point cloud plane position is superior to + / -3 cm, and the error in the elevation is superior to + / -2 cm are met.

A turbine blade for fluid machinery is provided with an outer wall, wherein an inner cavity of the turbine blade is limitedby the outer wall; a cooling fluid used for performing film cooling of the turbine blade can be supplied in the inner cavity; one or more continuous channels are formedin the outer wall; the cooling fluid can penetrate through one or more continuous channels from the inner cavity, flows towards the exterior of the turbine blade, and is used for forming a cooling film on the outer side of the outer wall, and the one or more continuous channelsare inclined towards the rear edge of the turbine blade; relative to other edge sections of inlets, the edge sections at the inlets of the continuous channels and on the sides located atthe upstream of the continuous channels are sharp ridge-shaped, as a result, partition areas can be formed in the continuous channelsforthe flow of the cooling fluid, and transverse flow inthe center of the cooling fluid is generated via the parathion areas; the transverse flow points to the sides of the continuous channels, opposite to the partition areas. Therefore, a pair of reversededdy currentsis formed in the continuous channels, and the speed vector of the flow of thecooling fluid between the centers of the eddy currentspoints to the sides of the continuous channels, located at the downstream.

The invention discloses a projection centrifugal automatic rotation spraying device, which comprises a liquid inlet vertical pipe body, an upper end cover, a lower end cover and a conical flow rate control tongue, wherein the flow rate control tongue is arranged at the middle part of the upper surface of the lower end cover, the liquid inlet vertical pipe body is a stepped connecting pipe, an oil-free end surface bearing and an oil-free shaft surface bearing are sequentially sheathed on the liquid inlet vertical pipe body, the upper end cover is sheathed on the outer sides of the oil-free shaft surface bearing and the oil-free end surface bearing, a gap is retained between the upper end cover and the oil-free end surface bearing, a rabbet shaft surface sealing part is arranged in the gap, the sealing part passes through a sealing pressure block and a locking nut and is further fixed in the gap, and a spiral opening with a parabolic cross section is arranged on the periphery of the flow rate control tongue of the lower end cover. The spraying device not only utilizes impact of a water source in a flow passage for generating a rotating force and further enabling water to form rotary spraying, but also has the larger water body projection coverage surface; simultaneously, the spraying device can further protect waterproof and maintenance-free functions of a rotating mechanism and achieve the long-term reliable operation of water-spraying fire-extinguishing function.

The invention provides a rotary screen type big-flow fire extinguishing sprayer, which comprises a tube socket, a support bracket, a flow divider, a shaft bearing water dividing wheel, and vortex current blades, the upper tube socket is connected and fixed with the fire extinction water supply pipe, the lower portion is in running fit with the shaft bearing, the water dividing wheel is provided with a cone shaped flow divider over the center and is mounted and fixed with the support bracket, the water dividing wheel is provided with a plurality of bar-shaped sieving ports radially outwards from the axes. The sprayer can be in combination control with high altitude flame detector and solenoid valve, which solves the problem of small radius of fire extinction sprayer sprinkling and delayed unlatching.

The invention discloses a distributing method of fixed pipe sprinkling system branch pipe, which comprises the following steps: removing multiple sprinkling branch pipes at even number allocation; remaining sprayer; setting a level vertical short-pipe between two sprayers on two ends of adjacent branch pipe; removing sprayer corresponding the branch pipe.

The invention discloses a battery electric vehicle power exchanging double-acting end effector. The battery electric vehicle power exchanging double-acting end effector comprises protective mechanisms, roller groups, a sliding block and guide rail mechanism, a horizontal unlocking mechanism, a bracket and a vertical unlocking mechanism; the roller groups are evenly mounted on the bracket and formsa revolute pair with the bracket; the protective mechanisms are mounted on two sides of the bracket and one end of the bracket, can be lifted and lowered relative to the bracket, and are used for limiting a battery unloaded from a car battery storage; the vertical unlocking mechanism is mounted on the bracket, matched with the number and the position of locking parts of fixed battery and used forbattery unloading and mounting of chassis type power exchanging; the block sliding and rail guiding mechanism is mounted on the bracket; and the horizontal unlocking mechanism is mounted on the sliding block and guide rail mechanism, can move along the sliding block and guide rail mechanism, is used for being matched with the battery locking device, and achieves movement of the battery and battery unloading and mounting of side-box type power exchanging by locking and unlocking. The effector achieves simultaneously the power exchanging of the chassis type and the side-box type, and solves theproblem that various power exchanging devices are difficult to communicate with each other.

The invention relate to a reinforcing structure for a fatigue cracked steel bridge panel. According to the technical scheme, the reinforcing structure for the fatigue cracked steel bridge panel comprises the cracked steel bridge panel, carbon fiber reinforcing battens, metal reinforcing battens, shear connecting parts, steel fabrics, an ultra-high performance concrete layer and a wearing layer, wherein the carbon fiber reinforcing battens are bonded to the cracked steel panel through organic structural adhesives; the shear connecting parts are welded to the metal reinforcing battens; and the metal reinforcing battens with the shear connecting parts are bonded above the carbon fiber reinforcing battens through organic structural adhesives, the steel fabrics are placed on the cracked steel bridge panel, the steel fabrics are composed of longitudinal steel bars and transverse steel bars, the longitudinal steel bars and the transverse steel bars are crisscrossed, the ultra-high performanceconcrete layer is arranged on the cracked steel bridge panel in a pouring mode, the carbon fiber reinforcing battens, the metal reinforcing battens, the shear connecting parts and the steel fabrics are covered with the ultra-high performance concrete layer, the ultra-high performance concrete layer is connected with the cracked steel bridge panel, and the ultra-high performance concrete layer iscovered with the wearing layer.

The invention relates to a repairing system for preventing soil gas invasion. The repairing system comprises a pressure monitoring system, a pollutant concentration monitoring system, a control center and a flow monitoring system, wherein the pressure monitoring system is used for detecting the pressure difference between the position under the stratum and the indoor space in real time and transmitting the detected pressure difference to the control center; the pollutant concentration monitoring system is used for detecting the concentration of pollutants in soil gas under the stratum in real time and transmitting the detected concentration information to the control center; the control center judges the possibility of health risks caused by soil gas invasion according to the received pressure information and the concentration information of the pollutants and starts a soil gas exhaust system if the health risks exceed a threshold; the flow monitoring system is used for providing an operation effect of the soil gas exhaust system and feeding back flow data to the control center; and the control center controls the operation state of the soil gas exhaust system according to the feedback information. The repairing system is low in cost, can effectively prevent soil gas invasion and can be widely applied in the environmental modification field.

The invention provides a horizontal well injection repairing method and device for a shallow organic pollution site. The method comprises the following steps: 1, burying a prefabricated horizontal well in a pollution area, arranging a plurality of vertical pipes without sieve pores in the length direction of the horizontal well, connecting the bottom ends of the vertical pipes with the horizontal well in a sealing manner, and connecting the other top ends of the vertical pipes with a medicament injection unit; and 2, alternately injecting ahydrogen peroxide and sodium persulfate mixed solution and a sodium hydroxide and sodium persulfatemixed solution into the vertical pipe. In the in-situ injection process of the horizontal well, injection short flow caused by formation difference is reduced, and underground water flows to accelerate agent diffusion, so that the remediation agent can be in full contact with a polluted area, the oxidation efficiency in the reaction process is improved, and agent and pipe waste is reduced; and a double-activation oxidation system is formed by alternately injecting the sodium persulfate and hydrogen peroxide mixed solution and the sodium persulfate and sodium hydroxide mixed solution, the oxidation effect is improved, and the physical and chemical properties of soil are improved.

The invention discloses a bonding pad structure of a ceramic heating piece with temperature control. The bonding pad structure of the ceramic heating piece with the temperature control is of a plate structure formed by an upper ceramic piece (1), a middle ceramic piece (2), a lower ceramic piece (3), heating resistors (4), temperature control resistors (5), heating leads (6), temperature control leads (7), heating resistance bonding pads (8) and temperature control resistance bonding pads (9), wherein the ceramic pieces are stacked in sequence, the multiple heating resistors (4) and the multiple temperature control resistors (5) are provided correspondingly, the heating resistors (4) and the temperature control resistors (5) are located on different planes, the heating resistance bonding pads (8) and the temperature control resistance bonding pads (9) are also located on different planes and are located on the same side of the ceramic heating pieces, and the area where the heating resistance bonding pads (8) located and the area where the temperature control resistance bonding pads (9) located are staggered in a stair shape. The density of the welding pads and the density of lead arrangement are reduced to a large extent, printing and lead welding operation is easy, the rate of finished products is ensured, and manufacturing cost is lowered.

The invention discloses an optical fiber coupler used for a high-voltage equipment control device. The optical fiber coupler comprises optical fiber plugs and an external terminal, wherein the external terminal is composed of an external terminal base body and N optical fiber plug channels which are positioned in the external terminal base body, and N is greater than or equal to 1; the optical fiber plug channels are used for fixing the optical fiber plugs passing through the optical fiber plug channels; a board clamping terminal is composed of a board clamping terminal base body and N light-emitting tube sleeves arranged inside the board clamping terminal base body; a light-emitting tube packaging hole used for packaging a light-emitting tube is formed inside each light-emitting tube sleeve; when the optical fiber plugs pass through the optical fiber plug channels and the front parts of the optical fiber plugs are completely inserted in the light-emitting tube sleeves, gaps are formed between the optical fiber plugs and the light-emitting tubes; the optical fiber plug channels are in one-to-one correspondence with the light-emitting tube sleeves; and axes of one optical fiber plug channel and the corresponding light-emitting tube sleeve are aligned with each other. The invention further discloses the optical fiber plug. The optical fiber coupler has the advantages of high arrangement density, good anti-interference performance, high maintainability and the like.

The invention belongs to the technical field of geological exploration drill tools, and relates to a special-structured PDC drill bit. Cutting wings and stabilizing wings are alternately uniformly arranged at intervals in the circumferential direction. Portions, exposing a drill bit body of the stabilizing wings are shorter than the cutting wings. PDC cutting teeth and spherical stabilizing teethare arranged at crown portions of the cutting wings. Drill bit protection necks are arranged on the lateral faces of the cutting wings and the stabilizing wings. PDC side direction cutting teeth and spherical abrasion resisting teeth are inlaid at the drill bit protection necks. The drill bit body is provided with fluid channels. Connecting screw thread is arranged at the top of the drill bit. Thecutting wings and the stabilizing wings are provided with the PDC cutting teeth. The PDC side direction cutting teeth are arranged at root portions of the cutting wings and the stabilizing wings meanwhile. The spherical stabilizing teeth are arranged at the drill bit protection necks. The structure is simple, and application is safe and convenient. The number of the cutting wings can be reduced,teeth arrangement density is lowered, pressure intensity of single tooth is improved, the special-structured PDC drill bit can be effectively fed into stratigraphic broken rocks, and can stably work at the shaft bottom. Rock breaking efficiency of the drill bit is high, the service life is long, and shaft body quality is guaranteed.

The invention relates to a combined reinforcement structure for solving a cracked steel bridge deck by additionally arranging a fiber-reinforced layer. The combined reinforcement structure for solvingthe cracked steel bridge deck by additionally arranging the fiber-reinforced layer is characterized in that the combined reinforcement structure for solving the cracked steel bridge deck by additionally arranging the fiber-reinforced layer comprises the fatigue cracked steel bridge deck, a fiber-reinforced composite material layer, shear connecting parts, steel fabrics and a concrete layer, wherein the shear connecting parts are arranged on the fiber-reinforced composite material layer, the fiber-reinforced composite material layer is laid to a cracked part of the fatigue cracked steel bridgedeck, the steel fabrics are placed on the fatigue cracked steel bridge deck, the concrete layer is arranged on the fatigue cracked steel bridge deck in a pouring mode, the shear connecting parts andthe steel fabrics are covered with the concrete layer, and the concrete layer is connected with the fatigue cracked steel bridge deck.

The first purpose of the invention is to provide an along-the-railway communication coverage method, which can realize antenna signal coverage in narrow and narrow scenes. The second purpose of the invention is to provide a wide-beam high-gain antenna, which can realize that the width of a half-power beam in a horizontal plane is about 65 degrees and the gain of the antenna is larger than or equalto 19 dBi. The third purpose of the invention is to provide a wide-beam high-gain multi-band common antenna, which can realize that the width of the half-power beam in the horizontal plane is about 65 degrees, the gain of the antenna at the low frequency band (less than or equal to 1 GHz) is greater than or equal to 16 dBi, and the gain of the antenna at the high frequency band (greater than or equal to 1.4 GHz) is greater than or equal to 19 dBi. Further, for reducing the difficulty of adjusting an electrical downward inclination angle in an engineering use process and avoiding the coverageof "shadow under a tower", a vertical plane of the antenna needs to be subjected to shape design of "null filling" and "vertical plane 3dB beam width increment"; and furthermore, for reducing the bearing requirements on a lifting pole and improving an engineering safety coefficient, the antenna is required to have a miniaturization characteristic, for example, the width of the antenna is less thanor equal to 400 mm.

The invention discloses a front-supporting and rear-pulling type foundation pit support system and a construction method thereof. The foundation pit support system comprises a support pile, a capping beam, a front-supporting type grouting steel pipe pile, and a rear-pulling type grouting steel pipe pile; the support pile is vertically constructed in a soil body to form a foundation pit support; the capping beam is arranged on the support pile; the front-supporting type grouting steel pipe pile is obliquely buried in the soil body in a foundation pit, the front-supporting type grouting steel pipe pile is anchored on the capping beam, and grout is injected into a pipe section, below the elevation of the bottom of the foundation pit, of the front-supporting type grouting steel pipe pile; and the rear-pulling type grouting steel pipe pile is obliquely buried in a soil body outside the foundation pit, the rear-pulling type grouting steel pipe pile is anchored on the capping beam, grout is injected into the whole rear-pulling type grouting steel pipe pile, and the rear-pulling type grouting steel pipe pile and the front-supporting type grouting steel pipe pile are alternately distributed. According to the system and the construction method thereof, the arrangement density of the front-supporting type grouting steel pipe piles in the length direction of the support pile can be reduced, the reliability, stability, safety and overall strength of the support system are improved, and the excavation difficulty of earth beside the foundation pit is reduced.

The invention discloses a wireless coverage system applied to a parking lot, which comprises a plurality of APs arranged in the parking lot, wherein the APs at least comprise a directional AP, and theradiation direction of the directional AP is the same as or approximately the same as the direction of a channel in the parking lot. According to the wireless coverage system applied to the parking lot, the directional AP and the omnidirectional APs are combined with the parking lot environment to carry out wireless coverage, positioning and navigation in the parking lot can be realized by usingfewer APs, the planning difficulty of AP layout can be effectively reduced, the use number of APs is reduced, the layout density of the APs is reduced, the wireless coverage cost of the indoor parkinglot is effectively saved, and the method is suitable for large-scale popularization and application.

The invention relates to a rotary microporous aeration circular coil system for treating sewage, belonging to the field of microporous aeration pipe equipment for treating the sewage. The rotary microporous aeration circular coil system is characterized in that: each microporous concentric circular coil group consists of a vertical rotating main pipe and a horizontal microporous concentric coil, wherein the horizontal microporous concentric coil is an integral coil which is formed by connecting a plurality of microporous concentric circular pipes from the inside out with microporous communicating pipes which are radially and uniformly arranged between the adjacent inner circular pipes and outer circular pipes at intervals; the central inner circular pipes of the coil are communicated with the vertical rotating main pipe through the microporous communicating pipes which are radially arranged at intervals; a plurality of microporous concentric circular coil groups are arranged intervals; and the upper ends of the rotating main pipes in all groups are connected with rotation drivers and control mechanisms respectively, and the lower ends of the rotating main pipes are communicated with gas transmission branch pipes respectively to form the rotary microporous aeration circular coil system. The rotary microporous aeration circular coil system greatly improves the aeration efficiency, ensures that oxygen dissolved in water bodies in a whole aeration tank is more uniformly distributed, reduces the operating cost of the aerobic process, and realizes the high-efficient and low-energy consumption operation of the aeration tank.