18results about How to "Increase the working distance" patented technology

The invention provides a deep ultraviolet microscope objective lens and a microscope. The objective lens of the deep ultraviolet microscope comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged on the same optical axis from an object side to an image side. According to the scheme of the invention, the method is designed according to the wavelength range of 260-262 nm, and the design value of the resolution in the wavelength range is consistent with the theoretical value; independent design is completely achieved, and the problem that an existing 50-time objective lens cannot meet many use requirements in optical detection is solved; specific parameters and structures of all the lenses are set, so that the amplification factor of the objective lens of the deep ultraviolet microscope is 50 times, the object space view field is 0.6 mm, a tube lens with the focal length of 200 mm can be used in a matched mode, the working distance is 13 mm, the numerical aperture is 0.528, the object space view field and the working distance of the objective lens of the deep ultraviolet microscope are improved, and then the overall performance of the microscope is improved.

The present invention relates to the technical field of dust suppression equipment, and has a protective device for road environmental protection construction, including a guardrail, and also includes a dust suppression mechanism arranged on the guardrail; the dust suppression mechanism includes an annular water tank, an annular pipe, a plurality of dust suppression components arranged equidistantly along the circumferential direction of the annular pipe, a chamber opened in the guardrail, and a driving component for driving the annular pipe to rotate; the annular water tank is located in the chamber, and the annular water tank is fixedly connected to the chamber; a through hole is opened on the chamber, the annular pipe is slidably connected to the annular water tank, a plurality of water inlet holes are opened on the annular pipe, and a plurality of water outlet holes are opened on the annular water tank, and the water inlet holes and the water outlet holes are connected; the dust suppression component includes an atomizing nozzle, a rubber tube, an extrusion block, and a power unit for driving the extrusion block to perform vertical reciprocating motion; the atomizing nozzle is connected to the annular pipe; the rubber tube is connected to the atomizing nozzle; and the rubber tube is located on the motion trajectory of the extrusion block. In order to solve the problem that the atomizing nozzle of the existing protective device has a small range of action and incomplete dust suppression.

The pneumatic monorail crane disclosed in the present invention comprises a box body, wherein a driving device, an energy storage device, a braking device and a supporting frame are arranged in the middle of the box body. The pneumatic monorail crane described in the present invention adopts self-contained compressed air that can work independently from the air duct as a power source. Changing the fixed air source compressed air to self-contained air can greatly improve the flexibility of the monorail crane operation, reduce the labor intensity of workers, and increase the working distance. It is equipped with a two-stage expansion plunger motor, which is twice as efficient as an ordinary pneumatic motor. The entire working process is free of any sparks and high temperatures, and has excellent explosion-proof characteristics. The driving brake device is used for speed control during the normal operation of the monorail crane. The speed of the monorail crane can be adjusted by adjusting the corresponding buttons on the control panel or remote control according to the driving environment or the slope size. The pneumatic monorail crane is used in conjunction with a supercharging system, and the supercharging system is fully pneumatically driven, which is safe and reliable for underground use.

The invention discloses a low-pressure low-permeability oil layer alternate injection reverse self-displacement pressure flooding method and system, and relates to the technical field of petroleum reservoir transformation and yield increase, and the method comprises the steps that an oil flooding system is injected into a low-pressure low-permeability oil layer until the formation pressure coefficient of the low-pressure low-permeability oil layer rises to a first preset threshold value; high-viscosity fracturing fluid is injected into the low-pressure and low-permeability oil layer until the fracturing crack length of the low-pressure and low-permeability oil layer is increased to a second preset threshold value; an oil displacement system and high-viscosity fracturing fluid are alternately injected into the low-pressure and low-permeability oil layer until the formation pressure coefficient rises to a third preset threshold value and the fracturing fracture length increases to a fourth preset threshold value; and the soaking time is determined based on the geological parameters of the low-pressure and low-permeability oil layer and the total amount of injected liquid, and soaking is conducted on the production well of the low-pressure and low-permeability oil layer based on the soaking time. The technical problem that the yield stabilizing effect is not ideal in the prior art is solved.

The utility model provides a terahertz wide-spectrum radiation source device based on a nonlinear crystal, which relates to the technical field of electromagnetic radiation and terahertz, and comprises a coupling prism, the bottom of the coupling prism is connected with a ridge-shaped waveguide, and the side surface of the ridge-shaped waveguide is coated with a buffer layer; the top of the ridge-shaped waveguide substrate is connected with a middle layer, and the top of the middle layer is connected with the bottom of the ridge-shaped waveguide. The terahertz wide-spectrum radiation source device has the beneficial effects that the ridge-shaped waveguide coupling prism forms the terahertz wide-spectrum radiation source device, the middle layer and the ridge-shaped waveguide substrate are arranged below the ridge-shaped waveguide, the coupling prism is attached to the ridge-shaped waveguide, the coupling prism is tightly attached to the buffer layer, pump light can be limited in the ridge-shaped waveguide to be transmitted, the operating distance of a nonlinear crystal is increased, and the effect of the nonlinear crystal is improved. And meanwhile, the loss of the terahertz waves in the transmission process is also reduced.

The utility model discloses a geotechnical investigation sand sampler, which relates to the technical field of geotechnical investigation and comprises a support table, a plurality of support components are uniformly arranged on the peripheral side of the support table along the circumference, a driving motor is fixedly mounted at the top of the support table, and a fixed cylinder is fixedly mounted at the bottom of the support table. A sliding cylinder I, a sliding cylinder II and a sliding cylinder III are sequentially sleeved with the fixed cylinder in the radial direction, the sliding cylinder I, the sliding cylinder II and the sliding cylinder III slide in the axial direction, and the lower end of the sliding cylinder III is rotationally sleeved with a rotating disc; and a screw rod is movably sleeved with the sliding cylinder III and is in transmission connection with a driving motor. According to the sand taking device for geotechnical investigation, the driving motor serves as a power source, the rotary disc can be driven to rotate synchronously through the telescopic transmission mechanism, the sliding cylinder I, the sliding cylinder II and the sliding cylinder III can be driven to slide in the vertical direction, and the sand taking cylinder continuously moves downwards, so that sandy soil in the deep position can be taken out, and the working distance of the sand taking device is increased.

The invention provides an infinite correction microscope objective lens and a microscope. The infinite correction microscope objective lens comprises a first lens, a first lens group, a second lens group and a sixth lens which are sequentially arranged on the same optical axis from an object side to an image side. According to the scheme, the specific parameters and structures of all the lenses are set, so that the amplification factor of the objective lens of the infinite correction microscope is five times, the object space view field is 8 mm, a tube lens with the focal length of 200 mm can be used in a matched mode, the working distance is 30.12 mm, the corresponding numerical aperture is 0.12, the object space view field and the working distance of the objective lens of the infinite correction microscope can be improved, and the objective lens of the infinite correction microscope can be used in a matched mode. The overall performance of the microscope is improved; while the field of view is improved, the infinite effective clear aperture is optimized, vignetting can be reduced to a great extent, and the imaging effect is improved; the resolution ratio at a large field of view is high; and moreover, the independent design is completely realized, and the problem that the existing five-time objective lens cannot meet many use requirements in optical detection is solved.

The invention discloses a bionic frog jumping robot. The bionic frog jumping robot comprises a head, a trunk, bionic front limbs, jumping rear limbs and supporting rear legs; the head part comprises an upper end plate, and the head part is connected with the trunk through the upper end plate; the bionic forelegs are distributed and placed on the two sides of the front part of the trunk in a bilateral symmetry manner; the supporting rear leg comprises a lower end plate; the bouncing hind limbs are arranged on the rear portion of the trunk in the body length direction and connected with the trunk through an upper end plate and a lower end plate. The supporting rear feet are arranged on the rear side of the lower end plate and make direct contact with the ground. Based on the principle of acting accumulation, the natural limitation of limited energy of single burst of jumping in the biological field is broken through, the upper limit of energy storage is greatly improved, extremely high jumping performance is achieved, and climbing over the complex environment can be achieved.

The application provides a kind of millimeter wave three-dimensional detection imaging radar, including millimeter wave MIMO transceiving antenna, millimeter wave transceiving link, radar control processing module, external display control unit and power module;The antenna port area of mouth-shaped transceiving antenna array can be minimum under the condition that resolution requirement is relatively high, the antenna array carries out cutting angle processing, increases the transmitting and receiving spacing, reduces transmitting and receiving coupling, improves the action distance;wk imaging algorithm solves the problem that traditional three-dimensional FFT conversion imaging algorithm exists distance bending under large bandwidth, cannot realize focusing imaging and obtains material surface three-dimensional data.This application adopts millimeter wave technology, meets the surface of cement, ore and other material level in harsh environment to carry out three-dimensional imaging, detects silo inner wall sticky material, material virtual hitch, cavity;The application can also be applied to composite material flaw detection field, reconstructs three-dimensional image under surface layer by penetrating surface layer structure, realizes non-destructive flaw detection to composite material.

This invention discloses an anti-corona insulated permanent magnet motor, relating to the field of permanent magnet motor technology. It utilizes the motor's temperature rise to drive the expansion of a thermal expansion medium, and through a telescopic component, sliding rod, and adjusting ring, moves an adjusting block, allowing the adjusting port to automatically change its flow area according to temperature variations. When the airflow is low, a relatively concentrated airflow is formed, increasing the airflow distance; when the airflow increases, ventilation resistance is reduced, improving the overall ventilation capacity of the heat dissipation duct. When the motor speed decreases and the fan's airflow capacity weakens due to a sudden increase in load, but the heat generation remains high, the liquid cooling circuit can be automatically activated based on the temperature rise, allowing air cooling and liquid cooling to work together, avoiding reliance solely on shaft speed for heat dissipation. The coolant flows sequentially through the front cooling ring, cooling channel, and rear cooling ring, absorbing heat from the front, outer periphery, and rear end regions of the stator assembly, respectively. Combined with the external heat dissipation duct of the housing, this forms a cooling path that integrates internal and external cooling, and end and outer periphery cooling.

The utility model relates to the technical field of pipeline dredging, in particular to a detachable and cleanable pipeline dredging device for building drainage, which comprises a mounting rod, one end of the mounting rod is fixedly connected with a hook claw, the mounting rod is connected with a sliding seat in a sliding manner, and the surface of the sliding seat is fixedly connected with a cutter. A protruding block is fixedly connected to the surface of the mounting rod, a spring is fixedly connected to the side, close to the protruding block, of the sliding base, the mounting rod is sleeved with the spring, the end, away from the sliding base, of the spring is fixedly connected with the surface of the protruding block, the cutter is in a triangular prism shape, and a cutting face is arranged on the side, away from the hook claw, of the cutter. And the extension rod is positioned on one side of the mounting rod. According to the hair winding device, hair in a pipeline is effectively wound through the hook claw, the hair is cut off through the cutter, sundries are rapidly treated, the working efficiency of equipment is improved, and the workload of operators is reduced.

The present application relates to oil and gas field chemical auxiliary technical field, disclose a kind of high-temperature resistant hyperbranched viscosifying self-generating acid, preparation method and application thereof, the viscosifying self-generating acid of the present application is prepared by iteration reaction with maleic anhydride and polyhydroxy alcohol and / or polyhydroxy alcohol amine as raw material, and the viscosifying self-generating acid obtained by preparation is hyperbranched molecule, and its molecule has hyperbranched structure inside.The hyperbranched viscosifying self-generating acid of the present application is hyperbranched structure, without additional thickening agent when using, itself has thickening function, with excellent viscosifying performance, and preparation process is simple, yield is high and cost is low.And, as acidizing fluid still has good self-generating acid ability under superhigh temperature, especially suitable for acid fracturing reconstruction of superhigh temperature reservoir.

A receiving and transmitting combined transducer based on a relaxor ferroelectric single crystal PMNT belongs to the technical field of underwater acoustic transducers, and comprises a prestress layer, a watertight layer, a cable, a splicing ring and two cover plates, the splicing ring is formed by connecting a plurality of splicing units; each splicing unit comprises two PMNT single crystal trapezoidal strips and two aluminum alloy trapezoidal strips; each splicing unit comprises a positive electrode and a negative electrode; leads led out from the anodes of all the splicing units are connected in parallel to lead out a total lead A, and leads led out from the cathodes are connected in parallel to lead out a total lead B; the prestress layer wraps the outer circumferential surface of the splicing ring; the two cover plates are installed at the two ends of the splicing ring respectively, and the two cover plates and the splicing ring are matched to form an air backing. The watertight layer wraps the peripheries of the two cover plates and the splicing ring; the cable is of a two-core structure and is electrically connected with the main wire A and the main wire B respectively. According to the utility model, the sound source level and the sensitivity of the transducer can be improved, and the working distance of the transducer can be effectively increased.

The invention discloses a radar communication integrated radio frequency signal generation device. In the device, a data interface unit is used for receiving data to be transmitted; the data grouping unit is used for grouping data; the pulse control unit maps each data combination of the pulse mapping group into K pulses selected from a pulse set for data transmission according to a one-to-one mapping relationship, maps each data combination of the transmission sequence group into a certain serial transmission sequence of the K pulses, and outputs the serial transmission sequence to the pulse modulation unit; the pulse modulation unit loads the data of the data modulation group to the K serial pulses according to a mapping modulation mode to complete pulse modulation; and the nonlinear unit generates a nonlinear frequency modulation signal with variable carrier frequency and phase and outputs the nonlinear frequency modulation signal to the power amplifier unit. According to the technical scheme disclosed by the invention, the data transmission capability and the target detection capability of the radar communication integrated signal are improved.

This invention relates to a method for measuring the tilt angle of an object based on optical vortices with continuously varying ellipticity. First, the rotational Doppler frequency shift mechanism of vortexes with different ellipticities is elucidated. Then, a set of vortex beams with continuously varying ellipticity is prepared by adjusting the beam intensity and phase using a complex amplitude modulation method. These beams are sequentially irradiated onto a rotating object, and the echo signals are received. Subsequently, the rotational Doppler time-frequency spectrum is obtained using time-frequency analysis. Theoretical analysis shows that when the ellipticity of the vortex beam and the tilt angle of the object satisfy a corresponding relationship, the spectral broadening is minimized and the signal amplitude is maximized. Therefore, the optimal ellipticity of the beam and the object tilt angle can be determined based on the time-frequency spectrum changes. This method requires a simple detection system, is easy to operate, and can accurately measure the tilt angle of an object, thus having great application potential in telemetry.

This utility model discloses a welding support and positioning fixture for a tunneling machine, including a work frame connected to one side of the top of the work platform, and a front support frame connected to the top of the work platform away from the work frame; a rear support frame is also provided on the work frame facing the front support frame, and a support assembly for horizontal adjustment facing the front support frame is connected to the top of the work frame. The advantages of this utility model compared to the prior art are: it provides a welding support and positioning fixture for a tunneling machine that reduces material waste and ensures construction efficiency.

The invention relates to the technical field of oil and gas field yield increase, and provides an integrated composite transformation liquid and a preparation method thereof. The problems that in the prior art, fracturing fluid and acid fluid cannot be used by one liquid, crosslinking in the acid fluid and hydrogen ion slow release for rock surface adsorption cannot be met at the same time, the resistance reducing function is achieved in the acid fluid, and the desorption function is not achieved when the fracturing fluid and the acid fluid are used for a reservoir mainly containing adsorption gas are solved. According to the main scheme, the preparation method comprises the following steps: preparing a resistance reducing agent main agent, a retarding and desorbing component and a cross-linking agent component. The main agent of the resistance reducing agent is prepared from polyacrylamide, poly (N-isopropylacrylamide) and other raw materials; the retarding and desorption component comprises a fluorocarbon surfactant, a titanate coupling agent and the like; the cross-linking agent component is composed of an organic zirconium cross-linking main agent, an organic acid salt cross-linking ligand and the like. The acidizing and fracturing fluid is used for acidizing and fracturing construction of oil and gas fields, can meet the technological requirements of acidizing and fracturing at the same time, and has the advantages of resistance reduction, low residue, high retardance and deep penetration in acid liquor.

The invention discloses a super-resolution photoetching device based on a topological photonic crystal and a method thereof. The device is sequentially provided with a transparent substrate, a mask layer, a planarization film layer and a photonic crystal structure layer from top to bottom, the photonic crystal structure layer is formed by combining sub-unit cells in different dielectric film layer stacking modes, and the photonic crystal multilayer film formed by combining the sub-unit cells has a topological non-trivial state. According to the device, a photon energy band is regulated and controlled by using subunit cells, and a spatial spectrum transmission pass band is formed. According to the spatial frequency spectrum filtering function of the photonic crystal multilayer film, high-frequency diffracted waves of the same level are efficiently transmitted, and can be transmitted to the photosensitive layer through a large working distance to form a super-resolution array pattern of a deep sub-wavelength scale. In actual production, the topological non-trivial state can reduce the requirements of the device preparation process. Moreover, the photoetching device with the large working distance is wider in application range, the operability of super-resolution photoetching is improved, and the service life of the photoetching device is prolonged.