14results about How to "Convenient spacing" patented technology

The invention discloses a carbon dioxide inter-section displacement pre-fracturing process and a design method and related equipment thereof, and belongs to the technical field of oil and gas production, the design method comprises the following steps: establishing an integrated fractured horizontal well numerical simulation model according to seismic data of a target well, logging interpretation data and an engineering parameter range given by an oil production scheme; the integrated fractured horizontal well numerical simulation model is used for simulating single well yields under different section intervals and different single-section carbon dioxide injection amounts by adopting a section-separated gas injection method; drawing a parameter optimization chart based on the single well yield and the carbon dioxide injection section number obtained under different section distances and different single-section carbon dioxide injection amounts; and according to the parameter optimization plate, determining the final segment spacing and the single-segment carbon dioxide injection amount. While the recovery efficiency is improved, the construction efficiency is improved, and the fracturing cost is saved.

The utility model relates to the technical field of optical lenses, in particular to a miniature dot matrix contrast-reducing lens, which comprises a lens, the lens comprises a central optical area and a miniature dot matrix area, the miniature dot matrix area comprises two dot matrix structures, namely a large dot matrix with the diameter of 0.18 mm and a small dot matrix with the diameter of 20-30 microns, the number ratio of the large dot matrix to the small dot matrix is 1: 3-1: 8, and the number ratio of the large dot matrix to the small dot matrix is 1: 3-1: 8. The covering density of the dot matrix areas is 10-45%, the dot matrix spacing is 0.2-0.65 mm, the depth of the dot matrix is 2-8 microns, the edge of the dot matrix is provided with a smooth transition area of 0.05-0.1 mm, the lens further comprises micro-lens areas, and the micro-dot matrix areas and the micro-lens areas are alternately distributed. The central optical area of the lens is not covered by the dot matrix, so that clear view is guaranteed; the contrast of the dot matrix area is accurately regulated and controlled, full-view blurring is avoided, micro-lens defocusing and dot matrix contrast reduction are combined, eye axis growth is doubly inhibited, dot matrix size and interval optimization is achieved, and glare and visual interference are reduced.

The application discloses a photovoltaic inverter layered distributed installation layout optimization method convenient for operation and maintenance and upgrading, constructs a three-layer linkage architecture of a centralized management layer, a regional control layer and a device execution layer, the regional control layer automatically scans a photovoltaic inverter NFC electronic tag through a dynamic topology identification mechanism, realizes plug-and-play of the device and second-level topology updating, a master and standby regional control unit adopts an incremental snapshot synchronization technology, completes non-perception switching within millisecond-level time, and ensures continuity of control instructions, the system adopts an operation and maintenance efficiency index dynamic optimization algorithm, forms an adaptive optimal layout scheme, a five-dimensional health degree evaluation model is constructed by combining DC side attenuation and MPPT deviation, early warning and pre-maintenance of device failure are realized, a time-space separation gray upgrade strategy combined with power generation power prediction is deployed, batch upgrading is realized, and automatic function verification and rollback are realized, and zero risk in the upgrading process is ensured. The application solves the technical problems of static rigidity of a traditional layout and concentrated upgrading risks.

The utility model discloses a kind of horizontal and vertical deformation photovoltaic support, its structure includes two fixed frames and movable pieces of symmetrical distribution.The fixed frame is formed by second, third, fifth connecting piece of mutual connection, third and fifth connecting piece are fixed in the both ends of second connecting piece, form stable mechanical structure;Movable piece contains two different lengths connecting pieces, respectively for connecting fixed frame and supporting photovoltaic panel edge.By replacing movable piece, photovoltaic panel can be quickly converted between horizontal and vertical arrangement, adapt to different seasons light demand.Fifth connecting piece uses telescopic design, cooperate locking piece to realize photovoltaic panel inclination accurate adjustment.The support system optimizes material utilization, reduces cost, improves power generation efficiency and stability.

This utility model discloses a tablet powder removal device for a tablet press, including a mounting frame. A feeding hopper is fixedly mounted on the mounting frame. A first conveyor belt group is provided at the output end of the feeding hopper. A second conveyor belt group is provided above the first conveyor belt group. Brushes are provided on the conveyor belts of the first and second conveyor belt groups. The second conveyor belt group rotates in opposite directions to the first conveyor belt group, with the second conveyor belt group rotating at a lower speed than the first conveyor belt group. A powder suction chamber and a powder collection box are fixedly mounted on the mounting frame. One side of the powder collection box is connected to the powder suction chamber through a pipe. An exhaust fan is provided on the side of the powder collection box away from the powder suction chamber. This utility model, by setting up the second and first conveyor belt groups with brushes, brushes away the powder from the tablets and promptly removes it through the powder suction chamber, reducing wear between tablets and the possibility of powder re-adheding to the tablets.

The utility model relates to the technical field of conveying equipment, in particular to a modular conveyor capable of being quickly disassembled and assembled, which comprises a pair of mounting side plates, a width adjusting component arranged between the two mounting side plates, a pair of height adjusting components arranged at the bottoms of the two mounting side plates, a splice plate arranged on one side of each mounting side plate, and a plurality of connecting plates arranged on the splice plates. And a splicing groove is formed in one side, far away from the splicing plate, of each mounting side plate. The width adjusting assembly is arranged, the rotating shaft can be driven by rotating the rotating handle to drive the gear to rotate, then the racks on the two sides move synchronously along the guide rails, the telescopic frame is driven to accurately adjust the distance between the installation side plates on the two sides, and convenient width adjustment is achieved; and through combined use of a mounting frame, a limiting rod, a handle I, a disc, a spring, a limiting disc and a limiting hole, the positions of a rotating shaft, a gear, a rack and a telescopic frame after adjustment can be effectively locked, and the situation that the distance between the two mounting side plates is changed due to accidental looseness is prevented.

The utility model relates to the field of turnover devices, and discloses a wind power motor base machining turnover device which comprises a transverse strip, a vertical plate is fixedly installed at one end of the transverse strip, a driving structure is arranged on the surface of the transverse strip, a second motor is arranged at the top of the driving structure, and rotating shafts are arranged on the sides, close to each other, of the second motor and the vertical plate. According to the design of the device, the special structure of the wind power motor base is fully considered, the device can be suitable for machining of bases of different sizes, in actual production, equipment does not need to be frequently replaced, and the equipment purchasing and maintaining cost of enterprises is reduced.

The invention relates to the technical field of steel cutting, in particular to a steel cutting machine with a pre-fixing function, and solves the problems that when tubular steel is cut in the prior art, due to the fact that the section of the steel is round, the steel is inconvenient to fix, deflection and sliding are easily caused during cutting, and the cutting efficiency and quality are affected. The device comprises a placing and discharging mechanism, a rotary disc cutting machine frame is installed in the middle of the placing and discharging mechanism, material conveying fixing mechanisms are installed on the two sides of the rotary disc cutting machine frame, and the two material conveying fixing mechanisms are symmetrically installed relative to the rotary disc cutting machine frame; the conveying fixing mechanism comprises a guide vertical frame, and a second transmission motor is fixedly installed at the upper end of the guide vertical frame. Multi-point pre-fixing is conducted on the steel, pressure monitoring is conducted while fixing is conducted, it is guaranteed that the tubular steel is stably locked, the cutting quality is improved, and automatic feeding and discharging of the tubular steel are facilitated.

The utility model discloses a deep-sea double-cutting nipper special for cutting a large-pound steel wire, which comprises a left nipper body, a right nipper body, a sharp middle cutting edge, a flat middle cutting edge, an adjusting screw, a sawtooth cutting blade, an adjusting cutting blade and a connecting mechanism, and the sharp middle cutting edge, the flat middle cutting edge, the sawtooth cutting blade and the adjusting cutting blade are respectively arranged. The steel wire shearing machine is specially used for shearing a large-pound steel wire, a PE wire is sheared through cooperation of a sharp middle cutting edge and a flat middle cutting edge, different use requirements of users are met at the same time, and the saw-tooth-shaped saw-tooth shearing blades are adopted, so that wire shearing is neat; the adjusting screw is matched with the adjusting shear blade, the height of the adjusting shear blade can be finely adjusted through the adjusting screw, it can be guaranteed that the distance between the shear blades is in the optimal state all the time, and thread trimming is excellent.

The application relates to a communication device, a multi-frequency array antenna and a manufacturing method thereof, and the multi-frequency array antenna comprises a reflecting plate, at least one high-frequency subarray and at least one first phase shifter. The high-frequency subarray comprises a plurality of high-frequency radiation units which are connected with the reflecting plate and are arranged in sequence and at intervals. Since one of the main body part and the top panel shares the reflecting plate, the first phase shifter can be assembled simply, the material composition is reduced, the consistency and assembly efficiency of the antenna are improved, and the flexibility of the integrated antenna design is improved. In addition, the other part is integrally extruded and produced separately, the production efficiency is higher, the part can be replaced and maintained flexibly according to actual needs, the cavity design is flexible, the cavity spacing and boundary can be optimized according to the antenna design, and the design popularization and serialization of the antenna are facilitated. In addition, the main body part and the top panel of the cavity constituting the first phase shifter are easy to process and have few post-processes, are not prone to errors, and thus the yield is high and the replacement of the parts is facilitated.

A metal plate paint spraying fixing support relates to the technical field of metal processing and comprises a bottom plate, a supporting rod, a bearing plate, a fixing block, a suction cup, a supporting block and an anti-skid block, the supporting rod is arranged in the center of the upper end face of the bottom plate, the bearing plate parallel to the bottom plate is arranged at the upper end of the supporting rod, the fixing block is arranged in the center of the upper end face of the bearing plate, and the suction cup is arranged on the upper end face of the fixing block. Four supporting blocks are arranged on the upper end face of the bearing plate, an anti-skid block is arranged at the upper end of each supporting block, and the upper end face of each anti-skid block is flush with the upper end face of the suction cup. The universal wheels and the supporting rods are arranged on the bottom plate, so that overall movement and height adjustment of the fixing support are facilitated; a fixing block and a suction cup are arranged on the bearing plate, and the metal plate above is adsorbed and fixed; by arranging the supporting blocks and the anti-sliding blocks, the edge of the upper plate is supported, the flatness of the plate is kept, and the paint spraying quality is improved; a bidirectional lead screw is arranged on the supporting block, and the supporting distance is adjusted so as to adapt to plates of different specifications.

This invention discloses a method and system for calculating the strength of surrounding rock based on the equivalent support reaction force of prestressed anchor bolts, relating to the field of surrounding rock data processing technology. The method includes: acquiring the initial mechanical parameters of the surrounding rock, tunnel excavation parameters, and anchor bolt support design parameters; calculating the cohesion increment, the elastic modulus of the anchor bolt-surround rock composite structure, and the equivalent support reaction force based on the design parameters; superimposing the cohesion increment with the initial cohesion of the surrounding rock to obtain the total cohesion; applying the equivalent support reaction force as a boundary condition to the bearing arch model; calculating the rock mass strength safety factor, the anchoring system efficiency coefficient, and the comprehensive deformation stability coefficient in parallel; and synthesizing the rock mass strength safety factor, the anchoring system efficiency coefficient, and the comprehensive deformation stability coefficient to obtain the final surrounding rock strength safety factor. This invention, through quantitative analysis, reduces the possibility of engineering risks and provides technical support for the special and complex engineering type of large-span tunnels.

The utility model relates to the technical field of medical machinery, in particular to a portable oral cavity impression instrument which comprises a placing component and an oral cavity impression instrument component, the placing assembly comprises a base, an adjusting frame, an adjusting hole, a mounting block, a fixing rod, a connecting rod, a side clamping plate, a fixing piece and a charger; the two sides of the base are connected with the adjusting frames respectively, the adjusting holes are formed in the adjusting frames, the mounting blocks are connected with the fixing rods, the fixing rods are connected with the connecting rods, the connecting rods are connected with the side clamping plates, and the mounting blocks are connected to the adjusting frames and provided with reserved mounting holes. And the oral impression instrument assembly is connected to the placing assembly. According to the utility model, the adjusting frame and the mounting block are connected and can be detachably adjusted, so that the distance between the two side clamping plates can be conveniently adjusted, the placing and fixing application range of the oral cavity impression instrument assembly can be conveniently increased, the oral cavity impression instrument assembly can be adjusted, clamped and fixed according to the oral cavity impression instrument assembly, and the oral cavity impression instrument assembly is prevented from being damaged in the carrying process; the use cost of the oral impression instrument is conveniently reduced, and the convenience of the oral impression instrument is improved.

The application discloses a kind of high-precision PCB X-ray detection equipment and detection method, including X-ray emission source transmission system, X-ray detector transmission system and PCB conveying system;X-ray emission source transmission system includes emission source transmission device and X-ray emission source;X-ray detector transmission system includes detector transmission device, detector Z-axis adjusting mechanism, detector mounting seat, X-ray detector, CCD camera and 3D scanner;PCB conveying system includes support beam, first support seat plate, seat plate translation device, second support seat plate, carbon fiber bearing sheet, first belt translation device, first belt conveying device, first transfer bearing device, second belt translation device, second belt conveying device and second transfer bearing device.The application can adjust the distance between X-ray emission source, X-ray detector and PCB, can carry out 3D scanning to PCB surface, can transfer bearing PCB, so that PCB detection is comprehensive and accurate.