119results about How to "Efficient connection" patented technology

The invention relates to the technical field of high-density packaged chips, in particular to a high-density packaged chip and a packaging structure, the high-density packaged chip comprises a mounting shell, a cover plate, a positioning mechanism and a circuit connecting mechanism, a substrate is arranged in the mounting shell, a mounting groove is formed in the substrate, and a chip is placed in the mounting groove; the cover plate is arranged at the top of the mounting shell; a silver paste bonding layer is arranged in the mounting groove and is used for fixing the chip; a heat-conducting plate is arranged at the top of the chip; the positioning mechanism comprises a positioning plate, a positioning bolt and a clamping block; the positioning plate is arranged above the heat conducting plate, the clamping blocks are arranged at the two ends of the positioning plate, and the inner walls of the ends, extending out of the mounting shell, of the clamping blocks are clamped with the outer side wall of the mounting shell; a positioning hole is formed in the base plate; a positioning bolt is arranged at the bottom of the positioning plate; a plurality of welding spots are arranged on the two sides of the top of the heat conducting plate and connected with the circuit connecting mechanism. The packaging structure provided by the invention has good thermal conductivity, and provides enough space for integration of other elements while ensuring stable installation of the chip.

The invention discloses a health quarantine space module system and a construction method. The health quarantine space module system comprises a front-end conventional inspection area and a rear-end troubleshooting disposal area, the front-end conventional inspection area comprises a health declaration verification module, a medical inspection module and a body temperature monitoring module; and the rear-end troubleshooting treatment area comprises a medical troubleshooting module and a subsequent treatment module. The health quarantine space construction method matched with the method comprises the following processes of health declaration verification, medical inspection, body temperature monitoring, medical investigation and subsequent treatment. According to the module system, efficient connection between a traditional port building and a new-period health quarantine module is established, and the inspection process of customs clearance personnel is more convenient and efficient through more scientific streamline system setting, functional structure and air pressure control; the field operation is more scientific and orderly; the risk of cross infection caused by mixed flow of personnel is avoided, and indoor space environment pollution caused by gas flow is avoided.

The utility model provides a frame structure of a photovoltaic module, which comprises a main body back plate surrounding the periphery of the photovoltaic module, a baffle plate part and a clamping plate part, the baffle plate part is perpendicular to the main body back plate and comprises a first baffle plate and a second baffle plate which are connected to the same side surface of the main body back plate, and the clamping plate part is located between the first baffle plate and the second baffle plate. The frame structure is arranged on the main body back plate and encloses the containing space with the baffle part and the main body back plate, the junction box is installed in the containing space, the junction box can be hidden in the frame structure, the overall attractiveness of a building is improved, the junction box can move in the circumferential direction of the photovoltaic module, the position of the junction box can be flexibly adjusted according to actual installation requirements, and the practicability of the photovoltaic module is improved. Accurate positioning of the junction box is facilitated, and efficient connection between the photovoltaic module and an external circuit is realized.

The invention provides a large floating body connecting system and a using method thereof. The large floating body connecting system is used for connecting a first large floating body and a second large floating body which are adjacent on the sea and comprises a plurality of prestress tensioning devices and a plurality of strands of limiting mooring ropes, the prestress tensioning devices are connected with upper structures of the large floating bodies, and the limiting mooring ropes are connected with lower floating boxes of the large floating bodies. Each pre-stress tensioning device comprises a pre-stress cable and a pre-tensioning cable which are arranged side by side; the plurality of prestress tensioning devices are configured to keep fit connection between the two large floating bodies under normal sea conditions; and when the two large floating bodies cannot maintain attached connection under the severe sea condition, the tensioning state of the prestressed cable and the pre-tensioning cable is relieved, and non-attached connection between the first large floating body and the second large floating body is achieved. The method is suitable for mutual connection of a plurality of deep and far sea large floating bodies, and a reliable solution is provided for floating body development and design of ship and ocean engineering and ocean energy development.

The invention relates to a high-intensity area stainless steel-ECC assembly type pier column-foundation joint connecting structure and a construction method, and belongs to the technical field of structural engineering. Comprising a prefabricated concrete pier column and a concrete foundation, and the good anti-seismic performance of the joint is guaranteed in the mode of high-strength stainless steel bar grouting sleeve connection and UHPC grouting socket and spigot joint combined connection; the prefabricated concrete pier column is composed of common concrete, pier body longitudinal common steel bars, pier body common stirrups, ECC concrete, pier body longitudinal stainless steel bars, pier body longitudinal high-strength stainless steel bars, pre-buried grouting sleeves, pre-buried grouting pipes, pre-buried grout outlet pipes and pier body FRP stirrups. The concrete foundation is jointly composed of reserved high-strength stainless steel bars, reserved socket grooves, foundation longitudinal steel bars, annular stirrups and foundation stirrups. The method can break through the bottleneck problem of limiting the connection reliability and the anti-seismic safety of the fabricated bridge pier joint in the high-intensity area, is popularized to new construction and reconstruction and extension of bridges and ocean engineering structures in the high-intensity area, and has a wide application prospect.

The invention provides an automatic transfer system for tobacco primary processing and unpacking, the automatic transfer system for tobacco primary processing and unpacking comprises a process planning module, an equipment execution module and an operation monitoring module, the process planning module is used for obtaining a box skin transfer process of a tobacco primary processing and unpacking link and generating a corresponding unpacking operation instruction; the equipment execution module is used for responding to the unpacking operation instruction and carrying out unpacking transfer work according to the unpacking operation instruction; and the operation monitoring module is used for monitoring the instruction issuing state of the process planning module and the operation running state of the equipment execution module, and visually displaying the instruction issuing state and the operation running state. Through cooperative linkage of the three modules, full-process automation of box skin and lining paper collection and the like in the tobacco primary processing unpacking link is achieved, manual operation is effectively replaced, the situation that in the prior art, an AGV is only used as a pure transfer tool is changed, and the overall automation degree and operation efficiency are greatly improved.

The utility model discloses a kind of VOC processing device convenient to replace filter screen, it is related to VOC processing technical field, including article main body, the side of the article main body is equipped with installation opening, the side of the article main body is fixedly connected with fixed plate, the side of the fixed plate is fixedly connected with storage shell, the side of the storage shell is movably connected with cover plate, the side of the cover plate is fixedly connected with handle, the side of the storage shell is fixedly connected with controller, the side of the storage shell is fixedly connected with protective shell, the side of the protective shell is fixedly connected with air guide frame, the side of the air guide frame is fixedly connected with fixed block, the side of the fixed block is fixedly connected with motor. The utility model, when user needs to use installation to processing device, the side of the article main body set by user through multiple installation openings can be conveniently used to efficiently use installation to processing device.

The utility model relates to the technical field of building steel structures, in particular to an anti-shearing key and a steel structure support anti-shearing device, the anti-shearing key comprises an anti-shearing bottom plate, an anti-shearing check block and an anti-shearing embedded part, and a through hole is formed in the anti-shearing bottom plate and used for penetrating a foundation bolt; the anti-shearing baffle block is arranged on the anti-shearing bottom plate and is used for bearing transverse shearing force; the shear-resistant embedded part is arranged on the side, away from the shear-resistant check block, of the shear-resistant bottom plate. The anti-shearing embedded part of the anti-shearing key is embedded in the foundation, the bottom of the steel structure support is connected to the anti-shearing bottom plate through the foundation bolt, the end of the foundation bolt penetrates into the foundation, and then the steel structure support can be fixed to the foundation, when transverse shearing force occurs, the steel structure support can form transverse shearing force on the anti-shearing check block of the anti-shearing key, and therefore the steel structure support can be fixed to the foundation. Transverse shearing force at the bottom of the steel structure support is transmitted to the shear key, the foundation bolt is prevented from bearing the transverse shearing force, connection of the foundation and the steel structure support is more efficient, force transmission is clear, and the shear key is easy to install and operate, time-saving and labor-saving.

The welding-free combined heating furnace core comprises an upper furnace core body and a lower furnace core body, the upper furnace core body is connected to the upper portion of the lower furnace core body, a fire gathering opening is formed in the connecting position of the upper furnace core body and the lower furnace core body, the fire gathering opening is of a closing-up structure from bottom to top, an outer edge is arranged on the side portion of the upper furnace core body, and the outer edge is connected with the lower furnace core body. A connecting groove is formed in the surface of the outer edge and used for being connected with a top extrusion closing opening of an outer barrel. By arranging the fire gathering opening, heat of the lower portion of the stove core can be gathered to the upper portion of the stove core through the fire gathering opening to heat cookware, the efficiency of heating the cookware by the stove core can be improved, by arranging the air inlet, external oxygen enters the stove core through the air inlet, the combustion-supporting effect can be achieved, the flame impact force is improved, and the combustion efficiency is improved; the connecting groove is used for being connected with the top of the outer barrel in an extrusion closing-up mode, the problems that time and labor are wasted, and welding quality cannot be guaranteed due to manual welding are solved, and connection is more efficient, firmer and more attractive.

The invention discloses a portable automatic terminal testing device and a using method thereof, and relates to the field of automatic terminal testing, and the portable automatic terminal testing device comprises a protection assembly which comprises a box body and a cover plate; the test assembly comprises a relay protection tester and a power supply; the moving assembly comprises a hand lifting piece and a dragging piece. The protection assembly is adopted to effectively protect internal test equipment, and the structural design of the box body and the cover plate ensures that the equipment is safe and stable in the transportation and storage process. The test assembly integrates various interfaces so as to be conveniently and efficiently connected with the to-be-tested automatic terminal, and the adaptability and the accuracy of the test are enhanced. And the moving assembly is flexible in design, the hand lifting piece and the dragging piece are combined, two different moving modes are provided, different ground conditions are adapted, and convenience and practicability are greatly improved. And the stability and the operation convenience of the device are improved through a spiral matching mechanism of the rotating drum and the driving rod, and the stability of the device in the moving process is ensured.

The invention discloses a reinforcing steel bar connecting sleeve, a connecting structure and a construction method, and relates to the technical field of building reinforcing steel bar connection.The reinforcing steel bar connecting sleeve comprises a sleeve body and reinforcing steel bars to be connected, and the sleeve body comprises a sleeve body and a sealing gasket located at the end opening of the sleeve body; a closed cavity is formed in the barrel through the sealing gasket, and a cementing material is arranged in the closed cavity of the barrel; the connecting reinforcing steel bars penetrate through the sealing gasket and penetrate into the cylinder body, the connecting reinforcing steel bars are wrapped by the cementing material, and the cylinder body is connected with the reinforcing steel bars. The invention has the advantages that the cementing material is injected into the sleeve in advance, only the reinforcing steel bar is inserted during installation, the installation is convenient, and the connection is reliable; due to the structure of the sealing gasket, little cementing material leaks out, the connection of the sleeve is visually checked due to the arrangement of the material bolt hole, and compared with an existing grouting sleeve, the connection quality is better guaranteed; the sleeve can be applied to a cast-in-place environment and a prefabrication environment, and the other end of the sleeve is provided with ports in different forms, so that the sleeve can be suitable for various occasions and is convenient to install and efficient in connection.

The utility model relates to a connecting component for connecting different square tubes, which comprises a lantern ring piece sleeved on a thin square tube, and the lantern ring piece is connected with the front end or the rear end of a thick square tube; during use, the thick square tube and the thin square tube are connected and fixed together through the lantern ring piece. The lantern ring piece is provided with a plurality of first connecting holes used for being connected with the thick square pipes, the thick square pipes are provided with second connecting holes corresponding to the first connecting holes, and the first connecting holes are connected with the second connecting holes through connecting pieces. At least one first connecting hole is located in the top of the lantern ring piece, and at least one first connecting hole is located in the bottom of the lantern ring piece. The first connecting holes and the second connecting holes are pin holes, the connecting pieces are pins corresponding to the pin holes, and therefore the thick square pipe and the thin square pipe are hinged. The connecting mode provided by the product is efficient and reliable, installation is convenient, the existing problem that square tubes made of metal and other materials must be connected through welding is solved, and meanwhile the problem that stress is generated due to temperature change between the cross beam and the stand column which are matched with the square tubes is solved.

The utility model discloses a kind of for joist pulls out column's underpinning jacking platform, including frame body underpinning platform and jacking platform;Frame body underpinning platform is set to the lower outer periphery of column to be constructed, and by four steel columns fixedly supported on foundation respectively arranged at its corner position;Jacking platform is set to the upper outer periphery of column to be constructed, jacking platform is connected by being anchored with the column to be constructed by multiple along its circumferential uniform setting of planting nail, and the gap between jacking platform and the column to be constructed is filled with grouting material;Four corner positions between the frame body underpinning platform and the jacking platform are respectively provided with underpinning support, and four edges of the frame body underpinning platform and the jacking platform are respectively provided with vertical jack.The utility model guarantees the effective connection of underpinning platform and the upper structure of column to be constructed, realizes the jacking unloading of upper structure of column to be constructed, and effectively reduces the operation risk in jacking unloading construction process.

This utility model discloses a protective baffle for flange production in the petrochemical industry, relating to the technical field of flange production equipment in the petrochemical industry. The protective baffle includes a main protective plate with a mounting plate fixed to its bottom, the mounting plate having multiple mounting openings. A supporting plug-in protective plate is connected to the inner ring of the main protective plate, and an upper protective plate is connected to the top of the supporting plug-in protective plate. Connecting rings and connecting protrusions are respectively provided on the sides of the main protective plate. The connecting rings have snap-fit ​​openings that match the connecting protrusions, and a first fixing component is also provided on the connecting rings. A second fixing component is provided on the front of the main protective plate. This utility model achieves height adjustment of the supporting plug-in protective plate through the second fixing component, and enables rapid connection of multiple protective baffles through the connecting rings, connecting protrusions, and the first fixing component. It solves the problems of incomplete functionality and inconvenient connection of existing protective baffles, and has the advantages of convenient adjustment, efficient connection, and comprehensive protection.

The utility model discloses a kind of connection structure of energy storage battery pack liquid cooling plate and energy storage battery pack module, including aluminum extrusion cold plate and the battery module of being located at its top, aluminum extrusion cold plate both ends are equipped with several fixed holes, fixed hole is clamped with fixed part, fixed part is welded in fixed hole, bolt is inserted in the mounting hole of battery module outer side, bolt hole is set in the center of fixed part, bolt is rotated with its corresponding bolt hole, it is related to new energy battery energy storage system technical field, simplify the complex structure of relying on multiple components welding in prior art, design is embedded into cold plate using single diamond connecting piece, cancel beam and redundant components such as back plate, improve sealing performance and assembly efficiency by threaded connection structure, adapt to the demand of new energy automobile battery module to lightweight, high-integration thermal management system, optimize part structure, processing technology and assembly process, realize efficient, compact and high-reliability connection.

The invention belongs to the technical field of hydrogel, and mainly relates to preparation and application of hydrogel with a doughnut structure. The invention aims to solve the problem that the existing seawater desalination material based on hydrogel is insufficient in recyclability. The preparation method comprises the following steps: mixing ZrOCl2. 8H2O and fumaric acid, and performing ultrasonic dispersion on the mixture and a multi-walled carbon nanotube to obtain a pretreated precursor; carrying out hydrothermal treatment on the pretreated precursor, and modifying the pretreated precursor with acryloyl chloride to obtain modified MOF801 (at) CNT; the modified MOF801-coated CNT, polyvinyl alcohol, cassava starch and a cross-linking agent are subjected to thermosensitive cross-linking treatment, and the hydrogel with the doughnut structure is obtained. The hydrogel has high application value in the field of seawater desalination, has self-adjustability of temperature response, is high in evaporation efficiency, can be recycled, and can efficiently desalinate seawater with different temperatures and components.

The application discloses a kind of Internet of Things card connection management method, system, equipment and product, method includes: obtaining connection request by physical network card;The connection request is carried out number attribution identification processing by global connection management platform, and the operator interface is obtained;The operator interface is carried out timeout retry detection processing, and the detection result is obtained;According to the detection result, the operator interface is carried out dynamic service polling processing, and the service processing result is obtained;The service processing result is carried out multi-dimensional result check processing, and the check result is obtained.The application embodiment can improve the connection efficiency of Internet of Things card, and can be widely applied in wireless communication technical field.

This invention belongs to the field of organic synthesis and relates to a [3+2] orthogonal cycloaddition method for the reaction of an active amino acid ester with a diazo compound and its application in synthetic chemistry. The method comprises: under inert gas protection and in the presence of a base and solvent, contacting the active amino acid ester with a diazo compound to undergo a [3+2] orthogonal cycloaddition reaction to obtain the 1,2,4-triazole compound represented by Formula I. The method of this invention uses readily available active amino acids and diazo compounds as starting materials, enabling the efficient and selective synthesis of highly functionalized, fully substituted 1,2,4-triazoles, and achieving a rapid and efficient orthogonal connection between two molecules linked to the diazo compound and the active ester.

This invention provides a PCB board processing system and method, comprising: a loading mechanism, a first processing mechanism, a second processing mechanism, a third processing mechanism, an unloading mechanism, and a transmission mechanism. The first processing mechanism includes a first loading feeder, a first clamping assembly, and an adhesive suction cup; the second processing mechanism includes a second loading feeder, at least two film-peeling grippers, and foam transfer grippers; the third processing mechanism includes a resistor bending assembly and an unloading gripper; and the transmission mechanism includes a second clamping assembly and a third clamping assembly. This invention can complete a complete, high-precision, and high-efficiency PCB board processing flow, achieving efficient connection between the various processing mechanisms and realizing continuous processing. Compared with conventional processing technologies, this application enables fully automated processing with seamless connection between each process, significantly shortening the processing cycle and thus meeting the needs of mass production. Furthermore, it also possesses significant advantages such as strong controllability, strong compatibility, wide applicability, and stable processing quality.

The present invention relates to the technical field of prefabricated toilets, specifically to a prefabricated rock slab waterproof and moisture-proof toilet wall and floor structure, comprising a plurality of wall panels and a floor, wherein the wall panels and the floor both comprise a layer of board and a layer of rock slab, and adjacent wall panels are connected with a hidden connection component embedded therein; the hidden connection component comprises a reference block and an embedded block, and grooves for installing the reference block and the embedded block are respectively provided on one side of two adjacent wall panels, and a self-tapping screw with one end movably penetrating the reference block is installed between the reference block and the embedded block, and the gap between the reference block and the embedded block and the wall is filled with a waterproof adhesive strip, and the reference block comprises a square block. The present invention solves the problem that the existing prefabricated toilets occupy a large space on the ground and the wall, and also reduce the aesthetics of the prefabricated toilets, and the problem that the bolts need to be tightened during assembly to fix the connectors to the wall and the plate, resulting in greater difficulty in assembly.

The utility model discloses a quick connecting structure of a tool bit and a tool handle for a hair removing tool, which comprises a tool bit rear seat, a handle is arranged on one side of the back of the tool bit rear seat, a connecting assembly is arranged between the handle and the tool bit rear seat, and the connecting assembly comprises a clamping block, a connecting frame and a connecting plate. The tool bit has the advantages that the connecting assembly composed of the clamping block, the connecting frame and the connecting plate is installed between the handle and the tool bit rear seat, so that when the tool bit rear seat is connected with the handle, rapid connection can be achieved in a direct inserting mode, tedious screwing operation is omitted, and the tool bit rear seat is convenient to use. Compared with the prior art, the tool bit rear seat and the handle are connected in a short time, meanwhile, the tool bit rear seat and the tool bit front seat are connected through the elastic piece, the linkage plate and the blade installation plate, an original button on the tool bit rear seat and an elastic assembly are integrally spliced, connection between the tool bit rear seat and the handle is more efficient, and the connection efficiency is higher.

The utility model discloses an assembly type disassembly-free steel bar truss floor support plate which comprises a first floor support plate, a second floor support plate is arranged on one side of the first floor support plate, a connecting device is arranged on the first floor support plate, and the connecting device comprises an inclined block, a conical block, an inserting block, an inserting groove, an inserting rod, an inserting sleeve, a clamping groove and an elastic plate. The multiple inserting sleeves are installed at the corresponding positions of the first floor bearing plate and the second floor bearing plate correspondingly, the inserting rods are installed in the inserting sleeves, the elastic plates are installed in the inserting sleeves, the clamping grooves are formed in the side walls of the inserting rods, the conical blocks are connected to the bottom ends of the inserting rods, the inclined blocks are installed in the inserting sleeves, and the inserting grooves are formed in the corresponding positions of the inner sides of the first floor bearing plate and the second floor bearing plate. One end of the inserting block is fixedly connected with the inclined block, the other end of the inserting block is inserted into the inserting groove, a supporting rib is arranged on the first floor support plate, the bottom end of the supporting rib is connected with a positioning device, and the problems that in the prior art, floor support plates are not stable in connection, and steel bars are difficult to position are effectively solved.

The utility model relates to the field of building decoration, in particular to a connecting component for connecting angle steel and a steel square tube, which comprises a connecting piece, the connecting piece is detachably connected with the top surface and the left side surface of the angle steel, and the front end or the rear end of the connecting piece is connected with the front side surface or the rear side surface of the steel square tube; during use, the steel square tube and the angle steel are connected together through the connecting piece. The product is simple in structure and convenient to operate, assemble, disassemble and maintain, the special connecting pieces made of aluminum alloy and the steel pins are adopted for achieving hinged connection of the angle steel and the steel square pipe, the connecting mode provided by the product is efficient and reliable, and installation is convenient; the product solves the problem that the angle steel and the steel square tube must be connected by welding, and also solves the problem that stress is generated between the cross beam and the stand column due to temperature change. The product is simple and convenient to operate, safe and reliable, replaces the existing welding connection mode with heavy problems, and improves the work efficiency and the construction quality.

The present disclosure relates to polyquinoxalines containing basic groups, which are obtained by copolymerization of a dioxinone monomer and a tetramine monomer. The present disclosure also relates to proton exchange membranes formed from the polyquinoxalines containing basic groups. The polyquinoxalines containing basic groups provided by the present disclosure have excellent mechanical strength, thermal stability, chemical stability and phosphoric acid doping rate, while having site-controllable basic groups, and have broad application prospects.

The invention discloses a rear-mounted threshold-free light-weight double-leaf protective air-tight door and a mounting method, the rear-mounted threshold-free light-weight double-leaf protective air-tight door comprises a door frame and door leaves mounted on two sides of the door frame, the door frame comprises an upper rolling frame, a left rolling frame, a right rolling frame and a lower horizontal support plate, a locking seat is mounted on the upper rolling frame, and a locking hole is formed in the lower horizontal support plate; double sealing strips are arranged on the upper rolling frame, the left rolling frame and the right rolling frame; the two door leaves are each provided with a locking and sealing linkage component, and each locking and sealing linkage component comprises a plurality of plug pin assemblies installed on the corresponding door leaf, a linkage assembly connected with the plug pin assemblies, a driving assembly driving the linkage assembly to act and a lower sealing assembly fixedly installed at the bottom of the plug pin assemblies. The door leaf is composed of a steel framework, a light steel front panel and a light steel rear panel. The door adopts modular design on the whole, is suitable for intelligent manufacturing, is convenient to install and construct, has relatively strong locking capability and leakproofness, is simple and convenient to operate, and is worthy of popularization and application.

The invention relates to the technical field of connectors, and particularly discloses a straight high-voltage connector for a new energy automobile, which comprises a plug and a socket, the plug comprises a first shell, a first insulating sheath, a pin terminal and a wire clamp assembly; the pin terminal can be limited and fixed in the first insulating sheath through the elastic limiting piece and the limiting rod; the socket comprises a second shell, a second insulating sheath and jack terminals; the second shell and the first shell can be locked and connected in the butt joint direction through bolts. The pin terminals and the jack terminals can be positioned and butted more accurately, poor contact or loosening of the plug and the socket in use is prevented, and stability and safety are high; the electromagnetic shielding performance and the mechanical strength are good, the reliability is high, and the required assembly space is small; according to the assembling method, rapid and efficient connection of the cable at the plug end of the connector is realized, accurate positioning and butt joint of the socket and the plug in plugging use can be ensured, the connection stability of the connector is enhanced, and the connector is convenient to use.

The utility model belongs to the field of photovoltaic power generation, and particularly relates to an integrated assembly type photovoltaic tile device which comprises a plurality of photovoltaic tile units, each photovoltaic tile unit is provided with an assembly frame, and the photovoltaic tile units are assembled with one another and installed on a tile hanging strip. Each photovoltaic tile unit comprises a plurality of battery pieces which are back contact battery pieces with grid lines integrated on the back face and are distributed in a rectangular array mode. The positive electrodes and the negative electrodes of the adjacent battery pieces in each row abut against each other, the back surfaces of the adjacent battery pieces are connected through interconnecting strips, and the half-cut battery pieces are laminated, welded and connected in series to form n rows of long-strip-shaped battery panels, and n is larger than or equal to n; the anodes at one ends of the n rows of cell panels are gathered and connected in parallel, and the cathodes at the other ends are gathered and connected in parallel and are respectively led out by bus bars; according to the back contact battery piece integrated on the back face through the grid lines, the appearance color can be unified, shielding of the interconnection strips is reduced, the power generation efficiency is higher, in addition, through the arrangement of the assembly frame, installation is convenient and efficient, and fragmentary parts are reduced on the whole.

The utility model discloses a protective net structure for constructional engineering construction, which relates to the technical field of protective net installation and comprises a protective net consisting of a net cloth main body and an I-shaped reinforcing ring, and the I-shaped reinforcing ring is pressed and fixed on the edge of the net cloth main body and penetrates through the upper surface and the lower surface of the net cloth main body. The plurality of I-shaped reinforcing rings are arranged along the edge track of the mesh cloth main body, the mesh cloth main body is connected with a quick-mounting assembly through the I-shaped reinforcing rings, and the quick-mounting assembly is used for realizing the mounting connection of the protective net and a steel pipe. According to the utility model, efficient connection between the protective net and the steel pipe can be realized by arranging the quick-mounting assembly, compared with the traditional binding operation of iron wires or binding bands, the whole mounting operation is easier and more convenient, the situation of mounting looseness can be effectively avoided, and the mounting efficiency and stability of the protective net can be further improved.

The invention relates to the technical field of optical fiber optics, and discloses a three-section optical fiber probe and a polarization optical coherence tomography system.The three-section optical fiber probe comprises a first optical fiber section, a second optical fiber section and a third optical fiber section which are sequentially connected; the fiber core diameter of the first optical fiber is larger than that of the third optical fiber, and the fiber core diameter of the third optical fiber section is matched with the fiber core radius of a polarization maintaining optical fiber in the polarization optical coherence tomography system; the second optical fiber section comprises a gradual change fiber core, and the radius of the gradual change fiber core is gradually reduced from the fiber core diameter of the first optical fiber section to the fiber core diameter of the third optical fiber section. The optical signal receiving energy of the three-section type optical fiber probe can be improved.

This utility model relates to the field of transfer equipment technology, specifically disclosing a two-stage telescopic mechanism. The mechanism includes a fixed frame, a first lifting frame, a second lifting frame, and two drive units. The fixed frame includes two first male connectors. The first lifting frame includes a first frame plate, one surface of which is fixed with two first female connectors that slide in cooperation with the first male connectors, and the other surface of which is fixed with two second male connectors. The second lifting frame includes a second frame plate, one surface of which is fixed with two second female connectors that slide in cooperation with the second male connectors, and its bottom has a through-hole, with the two second female connectors located on opposite sides of the through-hole. One drive unit is fixed to the fixed frame and located between the two first male connectors, and the other drive unit is fixed to the first lifting frame and at least partially passes through the through-hole. This mechanism simplifies the specific structure, reduces the space occupied, and achieves precise transfer of products to be processed.