73results about How to "Improve connection quality" patented technology

The invention provides a tower crane foundation prefabricated stand column pile and a construction method thereof. The tower crane foundation prefabricated stand column pile comprises a steel pipe concrete column and a prefabricated pipe pile. The bottom of the concrete-filled steel tubular column is connected with the prefabricated tubular pile; concrete is poured into the concrete-filled steel tubular column and the prefabricated tubular pile; the prefabricated pipe pile is formed by sequentially connecting a plurality of pipe pile sections; connecting assemblies are arranged at the connecting position of every two adjacent pipe pile sections and the connecting position of the concrete-filled steel tubular column and the prefabricated pipe pile. The connecting assembly comprises a reinforcing piece, and the two ends of the reinforcing piece extend into the connected components correspondingly. The reinforcer is anchored in the concrete. The steel pipe and the prefabricated pipe pile are prefabricated parts, so that the processing quality is better, and the process is simple and few in procedures during field operation; connecting assemblies are arranged between the adjacent pipe pile sections and between the prefabricated pipe pile and the steel pipe concrete column, and the connecting quality is more reliable. The concrete filled steel tubular column and the prefabricated tubular pile can effectively save materials and reduce cost.

The utility model discloses a flange plate machining device for valve machining, and relates to the field of valve machining. The device comprises a device table and an inner clamping piece, the device table comprises an outer shell box and first pneumatic cylinders, the first pneumatic cylinders are evenly and circumferentially arranged at the top of the outer shell box, the inner clamping piece comprises second pneumatic cylinders, abutting heads, an inner ring and a moving device, the second pneumatic cylinders are arranged in the outer shell box, and the abutting heads are arranged at the top of the outer shell box. The inner ring is arranged above the second pneumatic cylinder, the abutting head penetrates through the top of the inner ring, the moving device is arranged outside the inner ring, and a power motor is arranged outside the second pneumatic cylinder. The flange plate fixing device has the improvement points that firstly, the interior of the flange plate can be stably and accurately fixed in a fixing mode controlled by the power motor, the problem of unstable fixing force caused by factors such as spring fatigue and external environment change is solved, and therefore the machining precision and the connecting quality are improved;

The invention discloses a circuit board golden finger processing method which comprises the following steps: providing circuit board precursors which comprise a circuit area, a golden finger area and a lead area, the circuit area is provided with a metal circuit, the golden finger area comprises a plurality of golden finger precursors, the lead area comprises a plurality of leads, and the leads are connected with the golden finger precursors; the gold finger precursor is connected with the metal circuit, a solder mask layer covering the circuit area is formed, a wet film covering the lead area is formed, a first dry film covering the lead area is formed on the wet film, a gold layer is formed on the gold finger precursor in an electroplating mode, the first dry film and the wet film are removed, and the lead is removed in an etching mode. The first dry film can completely cover the lead in the lead area, the problem that the edge of the lead is exposed does not exist, the problem that the edge of the lead is plated with gold in the gold plating process, consequently, the edge of the lead cannot be etched and removed subsequently, and then the connection stability of the circuit board is affected is solved, and the connection stability and quality of the circuit board are improved.

The invention relates to a chip position prediction and adjustment method, device and equipment during reverse conversion, and a storage medium, and the specific method comprises the steps: employing a reversing device with a self-adaptive clamping adjustment function to pick up a chip, collecting the image information of the chip and a substrate, carrying out the feature extraction, and determining the relative position relation of the chip and the substrate; matching the coordinates of the chip bumps with the coordinates of the substrate welding spots in a one-to-one correspondence manner; according to the rotation center and length of a mechanical arm of the reversing device and the relative position relation between the chip and the substrate, the theoretical alignment position of the chip and the substrate after the chip is overturned is calculated, and a moving route is planned; the chip is moved according to the moving route, the state of the chip is monitored through multiple sensors of the mechanical arm, and the actual position of the chip is predicted based on the monitoring result; by comparing the actual position and the theoretical alignment position of the chip, the final position and the final movement route of the chip are adjusted, so that the purposes of effectively solving the problem of chip deformation and improving the precision and the reliability of inverse transformation time and chip position prediction are achieved.

The utility model relates to the technical field of packaging boxes, and discloses an embedded lock catch packaging box, which solves the problems that the existing packaging box is poorer in cover connection and fixation effect and insufficient in protection of articles in the packaging box, and comprises a box body, two sides of the upper end of the box body are respectively provided with an inserting groove, one end of the box body is provided with a through hole, and the through hole is communicated with the inserting grooves. A through opening is formed in the box body, clamping grooves are formed in the two sides of the interior of the through opening, fixing rods are connected to the two sides of one end of the box body, limiting grooves are formed in one ends of the fixing rods, and a box cover is connected to one side of the upper end of the box body. The pull plate is pulled towards one side, the pull plate is arranged outside the fixing rod in a sleeving mode, under the dual fixed connection of the lock catch assembly, the connection quality between the box cover and the box body is more stable, the situation that the box cover is opened in the using process of the packaging box, use of the packaging box is affected is avoided, and the safety of objects is guaranteed.

The utility model discloses a welding wire supply device for automatic submerged arc welding. In the existing submerged automatic arc welding process, welding work needs to be stopped after welding wires are used up, a new welding wire reel is manually replaced, the number of times of arc starting and arc quenching in the welding process can be increased due to the fact that the welding wires are replaced, and welding defects such as craters and cracks are generated. The welding machine comprises a welding machine body, the welding machine body comprises a movable welding trolley (3), a stand column (4) is vertically fixed to the movable welding trolley, a movable cross beam (5) is fixed to the stand column, and a welding device is fixed to the outer end of the cross beam; a welding wire supply device (1) is placed on the side face of the welding machine body, and a welding wire of the welding wire supply device is supplied to the welding device through a wire guiding mechanism (11). And the welding wire supply device comprises two welding wire reels (1a) which are connected in the box body and are arranged up and down, two wire pressing guide wheels (1e), a double-path wire threading device (1g), an induction heater (1h) and a wire rolling mechanism (1j). The automatic submerged arc welding wire feeding device is used for submerged arc automatic welding wire feeding.

The invention provides hot melting self-tapping drilling and riveting automatic nail feeding equipment and a quality monitoring method, and belongs to the technical field of riveting. The equipment comprises a rivet bin mechanism used for storing rivets, a vibration disc mechanism used for arranging the rivets in order, a rivet blowing mechanism used for blowing the rivets, a rivet overturning mechanism used for turning the directions of the rivets, a cap searching and tightening mechanism used for providing rotating torsion and axial pressure and a control mechanism. An accurate control and feedback mechanism is provided, and accuracy and high efficiency of the riveting process are ensured; the quality monitoring method comprises the steps of starting equipment, obtaining performance parameters of a connected piece, setting initial machining parameters, conducting real-time monitoring and data collection, conducting adjustment and control, recording data and optimizing the parameters and conducting quality inspection, the length-to-thickness ratio k of a conical cross section formed after drilling and riveting serves as a quality control standard, the machining parameters are adjusted in real time, and the machining precision is improved. The consistency and reliability of a riveting structure are ensured, and the product quality is improved.

The utility model provides a current collector, a top cover assembly, a battery and electric equipment, the current collector comprises a current collector body and a reinforcing part, the current collector body comprises a pole section, a tab section and a holding section, the pole section is used for being electrically connected with a pole, the tab section comprises a tab section main body and a tab connecting structure, the tab section main body is connected with the pole section, and the tab connecting structure is connected with the pole section. The tab connecting structure is connected to the tab section main body in a bendable manner and is used for being electrically connected with a tab of a core package, and the holding section is convexly connected to one side, deviating from the core package, of the tab section main body so as to be clamped and fixed by an external instrument; the reinforcing part is at least partially arranged on the surface of one side of the fixing section in the thickness direction. By arranging the reinforcing part, the strength of the holding structure is higher.

The embodiment of the invention discloses a cylinder assembling device of a cylinder mixer and a mounting method of a cylinder, a cylinder comprises a first cylinder and a second cylinder, the cylinder assembling device comprises at least two carrier rollers, at least two supporting rollers and a driving part, the two carrier rollers can be located on the two sides of the first cylinder respectively, the carrier rollers can move along with the first cylinder, and the driving part drives the first cylinder to move along with the second cylinder. The two supporting rollers can be located on the two sides of the second barrel correspondingly, the supporting rollers are used for supporting and rotating the second barrel so that the second barrel can be coaxially connected with the first barrel, and the driving part is connected with the supporting rollers and used for driving the supporting rollers to rotate. When the first barrel body and the second barrel body are connected, the first barrel body is driven by the driving piece to rotate, so that welding operation and barrel body rotation can be matched with each other, and a flat welding process can be adopted in the whole welding process. Therefore, the connection convenience and efficiency of the barrel are improved, the connection quality of the barrel is improved, and the installation and transportation cost of the barrel is reduced.

The present invention relates to a hot-melt butt connection mechanism for a spiral corrugated pipe, comprising a base, and also comprising: two rotating drums, on which a centering clamping assembly is arranged; a butt connection assembly arranged on the base, on which the two rotating drums are arranged, the two rotating drums share the same central axis, and the spiral corrugated pipe is clamped by the centering clamping assembly and the central axes of the two sections of the spiral corrugated pipe to be connected are kept to coincide, the butt connection assembly drives the two rotating drums to approach each other and causes the ends of the two sections of the spiral corrugated pipe to be connected to be squeezed against each other; a torsion assembly arranged on the butt connection assembly and corresponding to the rotating drum, the butt connection assembly drives the two rotating drums to approach each other and drives the torsion assembly to drive the corresponding rotating drum to perform reciprocating torsion; an expansion assembly arranged on the butt connection assembly and corresponding to the rotating drum, the torsion mechanism drives the corresponding rotating drum to perform reciprocating torsion and drives the expansion assembly to increase the clamping force between the centering clamping assembly and the corresponding spiral corrugated pipe.

The utility model discloses a mechanical connecting structure for prefabricated pipe piles. The mechanical connecting structure comprises a cylindrical hoop, an upper pipe pile connecting assembly, a lower pipe pile connecting assembly and a middle connecting assembly. The upper pipe pile connecting assembly is connected to the upper end of the cylindrical hoop, the lower pipe pile connecting assembly is connected to the lower end of the cylindrical hoop, the middle connecting assembly is connected to the middle of the inner wall of the cylindrical hoop, the upper pipe pile connecting assembly is connected to the lower end of an upper pipe pile, and the lower pipe pile connecting assembly is connected to the lower end of a lower pipe pile. The lower pipe pile connecting assembly is connected with the upper end of a lower pipe pile, and the upper end and the lower end of the middle connecting assembly are connected with the upper pipe pile and the lower pipe pile respectively. The middle connecting assembly comprises an annular end plate, and eight inserting rods are inserted into the upper circumference of the annular end plate at equal intervals; the upper ends and the lower ends of the eight inserting rods are connected with the upper pipe pile and the lower pipe pile correspondingly. The mechanical connection structure for the prefabricated pipe piles aims to overcome the existing defects, and solves the problem of connection strength of the pipe piles.

The application discloses a hot isostatic pressing diffusion connection synchronous aging treatment method for high-temperature alloy and copper alloy, relates to the field of dissimilar metal solid-phase welding, and can improve the strength of the high-temperature alloy, inhibit size distortion caused by stress change in the aging process, improve machining precision, shorten the process cycle of finished products and greatly improve production efficiency. Step 1: high-temperature alloy with a predetermined structure is prepared, and solid solution treatment is carried out; step 2: copper alloy with a predetermined structure is prepared, the surfaces of the high-temperature alloy and the copper alloy are polished smooth and cleaned; step 3: the copper alloy and the high-temperature alloy structure are attached to the surfaces to be connected, and vacuum sealing is carried out; step 4: the structure after sealing is sent into a hot isostatic pressing furnace to carry out hot isostatic pressing diffusion connection and in-furnace aging treatment, so that a final product is obtained. According to the hot isostatic pressing diffusion connection synchronous aging treatment method, the strength of the high-temperature alloy is improved, size distortion is inhibited, machining precision is improved, the process cycle of finished products is shortened, and production efficiency is improved.

The utility model discloses a special carrier for data line connector crimping in the technical field of data line processing, which comprises a working table, a data line body arranged in the middle of the working table, a crimping mechanism arranged above the working table, a molding mechanism arranged above the crimping mechanism, and a supporting seat fixedly mounted at the upper end of the working table, a mounting plate is fixedly mounted in the middle of the supporting seat, a hydraulic cylinder is fixedly mounted on the mounting plate, a connecting plate is fixedly connected to the transmission end of the hydraulic cylinder, a crimping block is fixedly mounted at the lower end of the connecting plate, a glue melting box is fixedly mounted at the rear end of the mounting plate, a pressurizing plate is arranged at the upper end of the glue melting box, and a connecting rod is fixedly mounted in the middle of the pressurizing plate. The special carrier for data line connector crimping is additionally provided with the crimping mechanism and the molding mechanism, and the beneficial effects of the crimping mechanism and the molding mechanism are reflected in that the crimping and molding processes of the data line connector are efficiently and stably completed, so that the production efficiency is improved, the product quality is ensured, and a reliable solution is provided for data line processing.

The utility model discloses a supporting frame for elevator installation, and relates to the technical field of elevator installation. The supporting frame for elevator installation comprises a support body, an electromagnet piece and a butt joint strip, the support body is of a vertical omega-shaped rod body structure with the right-angle-shaped section, the electromagnet piece and the butt joint strip are both in a vertical state and are arranged on the upper section and the lower section of the support body respectively, and the side edges of the electromagnet piece and the butt joint strip are flush. According to the supporting frame for elevator installation, due to the omega-shaped structural design of the support body, the situation that the connecting position between two sets of angle steel is shielded can be avoided, angle steel connecting and installing operation is not affected, and meanwhile the electromagnet is used for conducting magnetic attraction connection on the elevator angle steel to be installed and connected on the upper portion; and then the butt joint strip flush with the electromagnet is aligned with the elevator angle steel located on the lower portion so that it can be guaranteed that the angle steel attracted to the electromagnet can be aligned with the angle steel located on the lower portion, and the connecting precision between the two sets of angle steel can be guaranteed while an operator does not need to hold a support by hand.

The utility model relates to the technical field of assembly type concrete structures, in particular to a split type full grouting sleeve. The sleeve is composed of a first sleeve body and a second sleeve body, the outer diameter of the first sleeve body is the same as that of the second sleeve body, grouting holes and grout outlet holes are formed in the first sleeve body and the second sleeve body, the grouting holes and the grout outlet holes are located in the same side of the first sleeve body or the second sleeve body, and inner cavities of the first sleeve body and the second sleeve body are communicated with the outer surfaces of the first sleeve body and the second sleeve body. The first cylinder body and the second cylinder body form a full grouting sleeve through a threaded connection structure, the full grouting sleeve is divided into a left cylinder body and a right cylinder body which are provided with independent inner cavities by a threaded connection part, and the two cylinder bodies are fixedly connected with a connected reinforcing steel bar by injecting a grouting material respectively. The connecting structure is reasonable in structure, reliable in connection and small in required operation space during connection, further can greatly reduce the required length of a cast-in-place section between prefabricated parts, and is particularly suitable for butt joint connection between steel bars in a small space, so that the building construction speed is increased, and the construction quality of a connecting node is ensured.

The utility model relates to an audio and video display terminal, which relates to the technical field of display terminals and comprises a wiring terminal body, a terminal wiring body is fixedly mounted on the inner side of the wiring terminal body, insulating partition plates are arranged on the two sides of the terminal wiring body, a control assembly is mounted on the inner side of the wiring terminal body, and the control assembly is connected with the terminal wiring body. The control assembly comprises a hydraulic push rod fixedly installed on the inner wall of the wiring terminal body and a baffle fixedly connected to the extending end of the hydraulic push rod, positioning columns are movably arranged at the two ends of the wiring terminal body in a penetrating mode, and the baffle is fixedly connected with the positioning columns. The other ends of the two positioning columns are jointly connected with an insulation shell, a bottom plate is fixedly connected to the lower portion of the inner side of the insulation shell, and a protection assembly is installed on the upper portion of the bottom plate, the situation that an audio and video display terminal line is prone to loosening and disengaging is improved, input stability is guaranteed, butt joint is convenient, and connection efficiency is improved.

This application relates to an installation device and vehicle for a cab suspension bracket, including a first mounting member connecting to the first suspension bracket, the first mounting member including a first assembly portion and a second assembly portion; and a second mounting member connecting to the second suspension bracket and capable of connecting to the first mounting member; the second mounting member includes a first positioning portion and a second positioning portion respectively matching the positions of the first assembly portion and the second assembly portion; the first positioning portion and the second positioning portion are respectively connected to the first assembly portion and the second assembly portion, so that the first mounting member and the second mounting member are connected. This application can limit and position the first suspension bracket and the second suspension bracket in at least two directions, significantly improving the accuracy of the connection between the first suspension bracket and the second suspension bracket; through the precise positioning of these two brackets during the installation process, the connection quality and stability between the cab and the frame are effectively improved, making the installation process simpler and more reliable.

The utility model relates to the technical field of pipe fitting connecting devices, and discloses a porcelain tube with a quick connecting structure, which comprises a porcelain tube I, a porcelain tube II is connected to the right side of the porcelain tube I in a sliding manner, an annular groove is formed in the right side of the outer wall of the porcelain tube I, and a fixing hoop is fixedly connected to the outer wall of the porcelain tube I; an annular protruding edge is fixedly connected to the left side of the outer wall of the second porcelain tube, a threaded hoop is slidably connected to the outer wall of the second porcelain tube, and a sealing mechanism is arranged outside the annular protruding edge and used for preventing materials in the tube from leaking. According to the utility model, through the cooperation of the annular groove and the annular rib, the first porcelain tube and the second porcelain tube can be rapidly and preliminarily positioned, and through the threaded connection of the threaded hoop and the fixing hoop, the fastening force can be effectively transmitted, and the threaded hoop and the fixing hoop can be tightly attached, so that the first porcelain tube and the second porcelain tube can be firmly fixed together. And the stability and the reliability of the connecting structure are enhanced.

The utility model belongs to the technical field of connecting structures, and particularly relates to a connecting structure of a tab and a battery cell, which comprises the battery cell and the tab, a connecting body is led out of the battery cell, the tab is provided with a packaging body, and the connecting body and the packaging body are connected through a sewing process. Compared with the prior art, the connecting mode of the tab and the battery cell provided by the utility model has the advantages that the connecting body led out of the battery cell is connected with the connecting part between the packaging body of the tab through a sewing process, and particularly, the upper thread and the bottom thread of the upper layer and the lower layer are used for carrying out penetrating and staggered winding on the connecting part by utilizing a sewing machine principle; the multi-layer laminated tabs and the battery cell are firmly attached together, the connection effect is better, the stability is higher, and compared with a common tab welding mode, the phenomena of insufficient welding, insufficient tension, insufficient residues and the like can be effectively avoided, so that the connection quality and the product quality and reliability are improved.

The utility model relates to the technical field of pipe pile mechanical connection, and discloses a pin joint type and buckle type combined pipe pile mechanical connection structure which comprises a sleeve, an end plate is arranged in the middle of the sleeve, a steel pin rod is arranged on the inner wall of the end plate, a buckle groove is formed in the outer wall of the sleeve, a prestressed pipe pile is connected to the inner wall of the sleeve in a sleeved mode, and the prestressed pipe pile is connected with the buckle groove in a sleeved mode. A buckling groove is formed in the inner wall of the prestressed pipe pile, a buckling device is placed on the inner wall of the buckling groove, a first gasket is placed at the bottom of the buckling device, a second gasket is placed at the top of the buckling device, and a steel pin hole is formed in the inner wall of the prestressed pipe pile. According to the novel prefabricated pipe pile mechanical connecting structure combining pin joint type connection and buckle type connection, the problem of pipe pile connecting strength is solved, complicated and time-consuming welding or bolt reinforcement in the existing pile connecting process is avoided, the strength is sufficient, and meanwhile the pipe pile connecting efficiency is improved.

The utility model provides a connecting line crimping contact pin structure, the connecting line crimping contact pin structure comprises a connecting material belt and a plurality of crimping contact pins, the connecting material belt and the crimping contact pins are integrally formed through punching, the connecting material belt is provided with a positioning through hole, one side surface of the connecting material belt is convexly provided with a positioning bulge, and the positioning bulge is used for limiting the connecting material belt; the plurality of crimping contact pins are arranged at the extending end part in the width direction of the connecting material belt at intervals, each crimping contact pin is provided with a line connecting groove, one end, adjacent to the connecting material belt, of each crimping contact pin is provided with an inclined plane cutting groove, and the connecting material belt is convexly provided with an inclined plane supporting block which is adaptively embedded into the inclined plane cutting groove. The positioning through holes and the positioning protrusions on the connecting material belt are subjected to dual positioning in installed crimping equipment, so that the installation positions of the multiple crimping contact pins on the connecting material belt are accurate; and the connecting material belt is bent towards one side deviating from the inclined plane cutting groove, so that the crimping contact pins are quickly disconnected from the connecting material belt, and the production efficiency of connection of the plurality of crimping contact pins and the connecting wire is improved.

A laser-assisted rivet-free riveting method of composite and metal materials, first, the composite material is stacked on the metal material to complete the laser ring cutting of the composite material through the annular laser to form regular through holes; then the connecting plate is pre-tightened by pressing the concave die; under the forming force of the convex die upward movement, the metal material is plastically deformed and rivet-free riveting is formed at the hole cutting part of the composite material; the waste cutting is collected under the condition of not completely opening the riveting die by opening the concave die outer cylinder in sections. The present application utilizes the difference in the absorption capacity of resin-based composite and metal materials for specific laser waveband laser energy, realizes the continuous process of laser cutting composite and metal material plastic deformation, and further realizes the rivet-free riveting of composite and metal materials without pre-punching, which is suitable for the connection of composite and metal materials with different resin materials as the matrix, and the connection head can have a certain tensile strength.

The utility model relates to a sealing structure of a stator leading-out wire, which comprises an insulating bush connected with a through hole of a casing and a leading-out wire terminal connected with a stator coil, the leading-out wire terminal penetrates through the insulating bush through a binding post and is connected to a wire assembly positioned outside the casing through a welding part, and the binding post is provided with a wiring end connected with the leading-out wire terminal. An elastic washer and an insulation pad are sequentially connected between the wiring end and the inner wall of the machine shell, the insulation bush is provided with a threading hole for the wiring column to penetrate through and a limiting hole with the inner diameter larger than that of the threading hole, the upper portion of the wiring column is provided with a limiting end matched with the inner diameter of the limiting hole, and the inner wall of the limiting hole is connected with a limiting insulation sleeve and a limiting sealing ring which limit the limiting end. And the sealing effect is prevented from being influenced when the binding post is pulled. According to the utility model, the binding post can be prevented from being pulled up and down by pulling force, the sealing effect is improved, the wire assembly can be prevented from being separated from the binding post due to pulling force of the wiring nose to the wire assembly, and the connection quality of the stator outgoing line is improved.

The invention discloses a preparation method of a conjoined three-way drill rod joint, belongs to the field of mechanical manufacturing, and aims to solve the problems of hidden danger of stress concentration, insufficient torsional property, poor sealing performance and the like of the existing welded joint and realize integral forming of the joint through an integral weldless structure. The preparation method comprises the steps of forging stock hot forging forming, tempering treatment, transverse edge rough turning, axial inner hole drilling, transverse edge outer circle finish turning, bypass connector milling, thread finish turning and thermal refining. The drill rod joint prepared through the method has a uniform and compact metal structure, a continuously fiberized metal structure is formed in the drill rod joint, the defect risk caused by welding seams is eliminated, and the torsion resistance and the fatigue resistance are remarkably improved; the structure is weldless, and the sealing performance is better; threaded connection precision is high, and safety and reliability of the connector and equipment are ensured. The preparation method is simple and efficient, the production cost is remarkably reduced, meanwhile, the method adapts to complex working conditions such as deep wells and ultra-deep wells, the service life of products is greatly prolonged, and the safety of the products is greatly improved.

The utility model provides a kind of exempt from formwork piece prefabricated comprehensive pipe gallery structure, including along longitudinal piece prefabricated side wall, middle wall, roof and bottom plate;The side wall top is equipped with cantilevered plate integrally formed with one, and the cantilevered plate is used to rest roof and as the template of wet connecting node;The side wall and roof, the side wall and bottom plate are connected by steel bar lap joint and post-poured concrete to form wet connecting structure;The middle wall and roof are connected by high-strength bolt to form dry connecting structure;The middle wall and bottom plate are connected by mortise and tenon structure to form dry connecting structure;The longitudinal end of the side wall, roof and bottom plate is equipped with the connecting box of built-in steel wire rope ring, and the corresponding steel wire rope ring of adjacent pipe gallery section is connected by pin shaft steel bar and forms longitudinal connecting structure by pouring concrete.The utility model has good economy, and multiple segments can also be parallel advanced during construction, and efficiency is stable.

The invention provides a micro-channel heat exchange device based on high-entropy alloy connection and a preparation method and application of the micro-channel heat exchange device. According to the micro-channel heat exchange device, the connection quality of the joints of all layers of the micro-channel heat exchange device is improved, the tensile strength, the corrosion resistance and the hydrogen embrittlement resistance are improved, and the compactness, the corrosion resistance and the hydrogen embrittlement resistance of the fluid contact surface in the micro-channel heat exchange device are improved; the strength, the corrosion resistance and the hydrogen embrittlement resistance of the micro-channel heat exchange device are integrally improved, so that the micro-channel heat exchange device based on high-entropy alloy connection is suitable for places with high requirements for the space utilization rate and the reliability such as a hydrogen refueling station, and is particularly applied as a micro-channel heat exchanger of a hydrogen cooling system of the hydrogen refueling station.

A longitudinal connecting device for steel arches comprises a plurality of connecting ribs, the connecting ribs and the steel arches are arranged in a one-to-one correspondence mode, the connecting ribs are connected to webs of the steel arches in an inserted mode through fixing assemblies, and every two adjacent connecting ribs are connected through a connecting piece. According to the design, the connecting ribs are connected with the steel arches in an inserting mode, compared with welding, the connecting speed is high, the two connecting ribs are in butt joint through the connecting pieces, and the butt joint precision is high; meanwhile, the connecting ribs are connected with the steel arch frame through the fixing assemblies, the fixing effect is good, traditional welding connection is replaced with mechanical connection, fire operation in a tunnel is avoided, and particularly potential safety hazards in the tunnel with gas are greatly reduced; the connection mode of the I-shaped steel of the steel arch and the connecting ribs is directly converted from passive contact connection of the I-shaped steel and the connecting ribs into the mode that the two materials form a whole through structure interpenetration, external force is borne through the material strength, and the connection quality is greatly improved.

This utility model discloses a double-bonded, non-scraping grout-stopping tape, relating to the field of grout-stopping tape technology. It includes a grout-stopping tape substrate with a plurality of staggered and evenly distributed large and small teeth integrally connected to the upper surface of the substrate. The substrate is composed of a sealing layer, an adhesive transition layer, a fiber reinforcement layer, and a polymer wear-resistant layer. The sealing layer is made of natural rubber or nitrile rubber, the adhesive transition layer is made of resin adhesive, the fiber reinforcement layer is made of glass fiber, and the polymer wear-resistant layer is made of high-density polyethylene or polytetrafluoroethylene. The large teeth have a right-angled trapezoidal structure, and the small teeth have grooved protrusions. This utility model achieves double bonding and fixation, forming stable burrs on the surface of the precast component, improving connection strength, eliminating the need for scraping, and improving construction efficiency.

The utility model discloses a pipeline flange joint connecting structure, a vehicle thermal management system and a vehicle, the joint connecting structure comprises a runner plate, a flange joint and a connecting part, the end part of one side of the runner plate is a first connecting end part, at least one runner opening is arranged on the runner plate, and the flange joint is connected with the connecting part; each runner opening penetrates through the runner plate in the thickness direction of the runner plate, and a limiting groove is formed in the end, close to the first connecting end, of each runner opening. The end of the side, close to the runner plate, of the flange connector is a second connecting end, the flange connector is also provided with at least one channel opening penetrating in the thickness direction, the side, located at the second connecting end, of each channel opening is further provided with a limiting boss matched with the corresponding limiting groove, and the limiting bosses protrude out of the end face where the second connecting end is located. The connecting part is arranged between the flange connector and the runner plate, the two side parts of the connecting part are tightly attached to the first connecting end part and the second connecting end part respectively, and the structure has the advantages of being stable in connecting structure, high in connecting strength and high in connecting quality.

The application discloses a battery box and an energy storage device. The battery box comprises a box body and a temperature component. The box body comprises an outer shell and a lap joint part. The outer shell is enclosed to form an opening. The lap joint part is connected with the inner wall of the outer shell and is located at the opening. The temperature component is lapped on the lap joint part and closes the opening. The temperature component is provided with a containing cavity for containing temperature material. The temperature component and the battery pack are attached to adjust the temperature of the battery pack. Compared with the prior art, the application sets the lap joint part at the opening of the box body, laps the temperature component on the lap joint part and closes the opening. The temperature adjustment of the battery pack is realized by the containing cavity in the temperature component. The lap joint part provides the installation position for the temperature component. Before the temperature component is installed, the temperature component can be placed on the lap joint part. The lap joint part supports the temperature component, so that manual support or support of the temperature component is not needed, so as to facilitate the fixed connection between the temperature component and the box body and simplify the installation steps.