147 results about "Square cylinder" patented technology

The luggage with the external storage function comprises a luggage body, square cylinders are arranged on the outer wall of the luggage body and located on the two sides of the luggage body, square columns are arranged in the square cylinders in a sliding mode, one ends of the square columns are provided with connecting springs, and the other ends of the square columns are connected with the connecting springs. One end of each connecting spring is fixedly connected with the inner wall of the square cylinder, hanging holes are formed in the square columns, hanging rods are arranged in the hanging holes, storage boxes are arranged at the bottoms of the hanging rods, avoiding holes are formed in the two side faces of the square cylinder, and the hanging rods are located in the avoiding holes. A user can pull a pull ring to enable a hanging hole in a square column to be separated from a square cylinder, and at the moment, a hanging rod can be hung in the hanging hole, so that the storage box and the luggage box body are hung and placed, and the storage box and the luggage box body are convenient to take.

The utility model discloses a quick and uniform mortar stirring device for building construction, which relates to the field of building construction and comprises a tank body, a top cover is arranged at the top of the tank body, a stirring component is arranged at the bottom of the tank body, feeding pipes are connected to the left side and the right side of the top cover, two discharging pipes are connected to the bottom of the tank body, and electromagnetic valves are connected to the outer walls of the discharging pipes. A clamping groove is formed in the top of the tank body. Non-caked mortar raw materials are filtered through the filter sieve hopper, the caked mortar raw materials are located at the bottom of the filter sieve hopper, the electric telescopic rod is used for pulling the connecting plate, the connecting plate pulls the square rod, the square rod slides in the square cylinder, the square rod is used for pushing the grinding head, and the grinding head is driven by the motor to rotate. According to the mortar stirring device, the grinding head extends into the filter sieve hopper, the second motor is used for driving the grinding head to rotate, and the grinding head can be used for grinding and crushing caked mortar raw materials at the bottom of the filter sieve hopper, so that the mortar stirring efficiency and quality can be effectively improved.

The utility model relates to server base technical field discloses a spliced server base structure, including the placement board, the top fixedly connected with square cylinder no.

The invention relates to the technical field of automobile part processing equipment, discloses a small-head oil hole detection device for connecting rod production, and aims to solve the problem that a hole wall detection result of a small-head oil hole is affected due to the fact that a detection rod is affected by external impurities. Through the arrangement of the blocking mechanism, during use, the cylinder and the square cylinder are arranged on the two sides of the small-head oil hole, then the detection table extends into the small-head oil hole, the detection operation is completed by utilizing the axial contact between the detection rod on the detection table and the inner wall of the small-head oil hole, and in the process, the cylinder and the square cylinder are pressed on the two side faces of the small-head oil hole, so that the detection efficiency is improved. Through the actions, the amount of external impurities entering the small-head oil hole is reduced, so that the hole wall detection result of the small-head oil hole is not easily influenced.

The invention provides a vehicle framework structure. In the vehicle frame structure, a bracket couples a side member and a cross member. And the side components are aluminum square cylinder components. The transverse component is an iron square cylinder component. The bracket is provided with an abutting wall and a pair of clamping flanges. The abutting wall abuts against a tube end portion of a vehicle width direction end of the cross member. The pair of clamping flanges extends from the abutting wall to the outer side of the width direction of the vehicle and clamps the side surface member in the vertical direction.

The utility model discloses a monitoring device for building foundation settlement, which relates to the technical field of foundation settlement monitoring and comprises a bottom plate, an upright post fixedly connected to the upper side of the bottom plate, a limiting piece fixedly connected to the outside of the upright post, a rotating sleeve rotationally connected to the outside of the limiting piece, and a gear ring fixedly connected to the outside of the rotating sleeve. A rotating mechanism is installed outside the stand column, a plurality of sets of annularly-arranged fixing rods are fixedly connected to the outer portion of the rotating sleeve, a connecting cylinder is fixedly connected to the tail end of each fixing rod, a fixing square cylinder is fixedly connected to the tail end of each connecting cylinder, and a monitoring mechanism is installed on the inner side of each fixing square cylinder. According to the device, a sliding rod is automatically driven to make contact with a foundation through a balancing weight, settlement data are directly read through a graduated scale on a fixed square cylinder, the monitoring process is greatly simplified, convenience is improved, and meanwhile the settlement data can be accurately measured in the mode that the telescopic length of a connecting cylinder is adjusted and a motor drives a gear and a gear ring to rotate in a meshed mode. Different monitoring points can be flexibly covered, and omnibearing monitoring of foundation settlement is realized.

The application relates to the field of crane technology and discloses a large-scale steel structure hydraulic lifting device which comprises a hydraulic support, a slide rail connected to one end of the hydraulic support, a steel frame connected to the lower end of the slide rail, a circular frame installed at the lower end of the steel frame, a hook connected to the lower end of the circular frame, a supporting device installed in the steel frame, a detection device connected to the lower end of the supporting device, a second fixing device installed at the lower end of the detection device and a first fixing device installed at one end of the detection device. The first magnet plate and the second magnet plate are driven to slide downwards by the square cylinder, so that the first magnet plate and the second magnet plate can contact the steel structure, the steel structure is magnetically adsorbed, when the steel structure shakes, the first magnet plate and the second magnet plate are magnetically adsorbed and fixed on the steel structure, the first slide column is used as the support, and the shaking of the steel structure is reduced.

The utility model discloses a height-adjustable iron stand bunk bed which comprises a lower bed board, an upper bed board is arranged above the lower bed board, an adjusting mechanism is arranged between the lower bed board and the upper bed board, and the adjusting mechanism comprises a first adjusting piece, a second adjusting piece and a transmission rod. The first adjusting part and the second adjusting part are arranged in the middles of the two sides between the lower bed board and the upper bed board respectively, the transmission rod is arranged between the first adjusting part and the second adjusting part, the first adjusting part and the second adjusting part are the same in internal structure, and the first adjusting part comprises a top box, an adjusting square cylinder and an adjusting column; the top box, the adjusting square cylinder and the adjusting column are sequentially arranged from top to bottom. The height of the double-layer bed with the iron stand can be adjusted, practicability is improved, and therefore the problems that when the double-layer bed with the iron stand is used, the height requirements of different users cannot be met, and installation limitation of a non-standard space cannot be met are solved.

The utility model relates to the technical field of filters, in particular to a square cylinder type filter of an air purifier. A square barrel type filter of an air purifier comprises a filter body, the filter body comprises metal nets, filter glue, covered edges, a coarse filter screen and a filter element, the covered edges are arranged at the two ends of the filter body, the metal nets are arranged in the filter element, the metal nets are connected end to end to define a square barrel shape, the four corners of each metal net are in round corner transition, the coarse filter screen is arranged outside the filter element, and the filter glue is arranged on the filter body. And filter glue is coated inside the filter element. Compared with the prior art, the filtering area is increased in a limited space, the structural resistance of the filter is reduced, the air passing amount of the filter is increased, the filtering and purifying effects are improved, a product is shaped in a single-face glue injection mode, the strength is guaranteed through the metal net, the appearance is guaranteed and large-particle hair is filtered by additionally arranging the coarse filter net on the outer ring, and the service life of the product is prolonged. The service life is prolonged.

The utility model relates to the technical field of coal, in particular to a coal bed gas reservoir pulverized coal monitoring device which comprises a square cylinder, the square cylinder is communicated and fixed to a water inlet pipe of a pump, a first cylinder is communicated and fixed to the square cylinder, a first sealing plate is inserted into the first cylinder, and a guide pipe is arranged on the first sealing plate in a penetrating and sliding mode. A circular ring is fixed to the guide pipe in a penetrating mode, the circular ring makes contact with the first sealing plate, a monitoring probe and a controller are fixed to the two ends of the guide pipe respectively, a wire is fixed between the controller and the monitoring probe, the wire penetrates through the guide pipe, and the monitoring probe is inserted into the square barrel. When the device is used, the monitoring probe is used for monitoring the content of pulverized coal at the gas production port of the gas storage layer, so that a worker can timely find the situation that the content of the pulverized coal at the gas production port of the gas storage layer is increased suddenly and can timely process the situation, and the phenomenon that a gas production channel is disturbed and blocked can be avoided.

The utility model discloses an injection molding machine feeding mechanism with a safety protection structure, which belongs to the technical field of injection molding machines and comprises a screw conveyor, connecting support rods are mounted at two ends of the top of the outer wall of the screw conveyor, and a melting bin is mounted at one end, far away from the screw conveyor, of each connecting support rod. Concentric-square-shaped positioning grooves are formed in the top of the spiral conveyor and the bottom of the melting bin; a square cylinder is arranged at the bottom of the melting bin, a filter plate is arranged in the square cylinder, and a limiting groove is formed in one side of the filter plate; and a cavity is reserved in the outer wall of the square cylinder. According to the utility model, the square cylinder is arranged between the melting bin and the screw conveyor, and the filtering plate is arranged in the square cylinder, so that raw materials melted by the melting bin can be further filtered by the filtering plate and then enter the screw conveyor, and furthermore, the situation that part of parts which are difficult to melt enters the screw conveyor and damage parts such as an injection molding nozzle is avoided.

A cover turning and conveying device for a wet tissue cover is arranged on a sticky cover conveying path of the wet tissue cover and comprises two clamping plates arranged side by side, a square cylinder sliding way, an annular belt wheel and a main belt wheel. The square cylinder slideway is sleeved into the center of the annular belt wheel and is fixed with the annular belt wheel into a whole, one end part of the clamping plate is provided with a large round hole, the annular belt wheel is rotationally sleeved between the large round holes, and the square cylinder slideway extends out of the large round hole; a small round hole is formed in the other end of each clamping plate, a motor is installed at the small round hole, a main belt wheel is connected with the output shaft between the two clamping plates, and a transmission belt is arranged between the main belt wheel and the annular belt wheel in a sleeving mode; according to the device, the annular belt wheel and the square barrel slide way can be driven by the main belt wheel through a belt to rotate by a circle at a high speed, and a wet tissue cover is instantly turned over to be located on the front face and slides out of the square barrel slide way to enter a conveying roller on the lower portion to be conveyed to the cover sticking procedure. The full-automatic cover turning and arranging device can adapt to the production speed of a cover sticking production line, and the labor cost is reduced.

The utility model belongs to a tree diameter at breast height and height surveying device, and particularly relates to the technical field of tree surveying, which comprises a machine body, a height measuring assembly is arranged on the outer top surface and the left end of the machine body, a diameter at breast height measuring assembly is arranged on the left end of the outer bottom surface of the machine body, and a grip is fixedly arranged on the right end of the outer bottom surface of the machine body. A square plate is fixedly connected to the outer bottom face of the grip, a clamping and fixing assembly is arranged on the outer wall of the left side of the square plate, a rope can be wound around and attached to a tree by a circle through the arranged positioning square cylinder and then is connected with a rope head in a clamped mode, then the rope is prevented from being automatically recycled, and therefore the situation that the rope head needs to be continuously pulled is avoided; and the workload of a user is reduced.

The utility model discloses a novel industrial solid waste recycling treatment device which comprises a working table, a central square cylinder is welded to the middle of the working table, and a feeding hopper is welded to the top of the central square cylinder; according to the industrial waste shredding device, the two motors on the workbench are started to work, the two motors are promoted to drive the speed reducer to rotate through the transmission belt and the belt wheel respectively, the two shredding cutter shafts connected with the output shaft of the speed reducer through the coupler are made to rotate, and industrial waste fed by the feeding hopper is shredded by the two shredding cutter shafts in the center square cylinder; crushed industrial waste falls onto the screening plate and is separated by a first hollow structure on the surface of the screening plate, powder and slag substances penetrate through the screening plate and are discharged from the bottom of the central square cylinder, and metal materials or other fragment materials are discharged from the discharging nozzle under the action of gravity in the process. Electromagnets installed in barrier strips on the left side and the right side of the screening plate are started to work, so that fine metal waste in the crushed industrial waste is adsorbed.

The utility model relates to a cooperative bearing column bearing type double-wall square cylinder group bin. The upper frame beam and the lower frame beam are of a reinforced concrete structure formed by integral pouring and are used for connecting the square cylinder single bins and the supporting columns to form a collaborative bearing system, and a plurality of friction pendulum shock insulation supports are evenly distributed between the upper frame beam and the lower frame beam so that rigid connection can be changed into semi-flexible transition connection. The inner wall and the outer wall of the double-wall structure are connected together through a plurality of evenly-distributed connecting embedded columns to be borne on the upper frame beam to form an integrally-integrated bearing structure, the upper frame beam is used for cooperatively bearing the square cylinder single bins, the lower frame beam is used for cooperatively connecting the supporting columns, and therefore cooperative bearing of the upper frame beam is matched. The stress concentration effect caused by direct rigid contact of the silo wall and the supporting columns can be obviously relieved, the problems of eccentric stress and large local stress peak value caused by different gravity of each single square cylinder silo are solved, and it is ensured that the structural safety of the square cylinder group silo is higher, and the anti-seismic property is higher.

A steel structure square cylinder butt joint fixing device is characterized in that a square ring lining plate is arranged on the inner side face of an upper end opening of a base cylinder, the square ring lining plate protrudes out of the upper end opening of the base cylinder, a chamfer is arranged on the outer edge portion of the lower end of an upper cylinder, and a butt joint plane is formed between the inner edge of the chamfer and the inner edge of the lower end opening of the upper cylinder; the lower end of the upper column body is sleeved on the square ring lining plate in a matching manner, and the butt joint plane corresponds to the port surface of the upper column body; a lower positioning plate is arranged in the middle of the outer side face of the base column body in the length direction, and an upper positioning plate is arranged in the middle of the outer side face of the upper column body in the length direction. The square ring lining plate of the device plays a guiding and limiting role between the upper column body and the base column body, rapid and accurate butt joint of the upper column body and the base column body is facilitated, the chamfer and the square ring boss form a gap with the cross section in the shape of a right trapezoid, more welding materials can be welded into the gap with the irregular cross section, better fusion of the welding materials can be promoted, and the welding quality is improved. And the connection firmness and the butt joint construction efficiency of the upper column body and the base column body are effectively improved.

The six cylinder bodies are arranged around the combustion chamber, detonation waves generated in the explosion process of the combustion chamber are fully absorbed from six directions by using the detonation waves as much as possible in all directions, and then the absorbed detonation waves are converted into kinetic energy through the crank connecting shaft device, so that the efficiency of the engine is improved. According to the first type, when the diesel engine is used, the diesel engine does not need to be ignited by a sparking plug, so that the cylinder bodies are six square cylinder bodies; in the second case, when gasoline is used as fuel, a spark plug is needed for ignition, so that one of the cylinder bodies in the six directions is made into a round shape to be used for installing the spark plug. Rails are arranged at four corners of a square cylinder body, and a sealing valve, a piston ring and a ball are arranged on a piston. The top end of the piston is spherical and protrudes as much as possible, and the size of a combustion chamber is reduced.

The new energy prime mover equipment manufacturing tool comprises a device body, an operation groove is formed in the middle of the device body, a mounting top plate is fixedly connected to one side of the top end of the operation groove, a forward and reverse motor is fixedly mounted in the middle of the back face of the mounting top plate, and the output end of the forward and reverse motor is fixedly connected with a rotating shaft; one end of the rotating shaft penetrates through the mounting top plate to be fixedly connected with a rotating disc and a transverse conical wheel in sequence, the top end of the side, close to the transverse conical wheel, of the rotating disc is fixedly connected with a mounting square plate, and the middle of the mounting square plate is fixedly connected with a vertical square cylinder; according to the new energy prime mover equipment manufacturing tool, a user conducts adjustment according to prime mover equipment needing to be polished, operation is easy and convenient, when the new energy prime mover equipment manufacturing tool is used, the prime mover equipment can be conveniently clamped, and limitation is reduced when the new energy prime mover equipment manufacturing tool is used.

The anti-falling mechanism comprises a working platform, protection assemblies are arranged at the front end, the rear end and one side of the upper portion of the working platform, each protection assembly comprises a protection square cylinder and a protection inner plate, the protection square cylinders are fixedly connected with the working platform, the lower ends of the protection inner plates extend into the protection square cylinders, and the lower ends of the protection inner plates are fixedly connected with the working platform. And hand screwing bolts are symmetrically installed on the two sides of the upper portion of the front end of the protection square barrel in a threaded mode correspondingly, the screw rod ends of the hand screwing bolts extend into the protection square barrel and make contact with the protection inner plate, guide columns are symmetrically arranged at the front end and the rear end of the working platform correspondingly, and protruding plates are arranged on the outer sides of the guide columns in a sliding mode. According to the anti-falling working platform, the anti-falling capacity of the working platform is achieved, practicability is improved, and therefore the problems that when a constructor works on the working platform, an anti-falling mechanism is lacked, certain potential safety hazards exist, and practicability is poor are solved.

The utility model discloses a composite film cutting device convenient to prevent the shrinkage and re -winding of diaphragm, including cutting table, the back surface fixed connection of cutting table has square cylinder, the inner wall mounting of square cylinder has driving part, the front surface fixed connection of square cylinder has cutting part, the top of cutting table is provided with two with the installation of two transmission rods of driving part, the outer surface of every transmission rod all is fixedly connected with square board, the outer surface of two square boards all is fixedly connected with U -shaped pressure frame, and cutting part is located between two U -shaped pressure frames. This composite film cutting device convenient to prevent the shrinkage and re -winding of diaphragm moves through driving part and takes transmission rod, square board and U -shaped pressure frame, and the position of cutting composite film piece cutting near is pressed tightly fixed before cutting, and the convex block on U -shaped pressure frame can increase the friction with diaphragm, further prevent the shrinkage and re -winding phenomenon of diaphragm in cutting process because of internal stress release and other factors, ensure the film piece size accurate after cutting.

The utility model discloses a corrugated carton cutting waste recovery device, and particularly relates to the corrugated carton processing field, the corrugated carton cutting waste recovery device comprises a collection box, the upper surface of the collection box is provided with a circular crushing cylinder, the upper surface of the circular crushing cylinder is provided with a crushing square box, the upper surface of the collection box is fixedly connected with a dust collection square box, and the dust collection square box is provided with a dust collection box. The outer surface of the square dust collection box fixedly communicates with an auxiliary dust collection cover and a square dust collection barrel, the auxiliary dust collection cover communicates with the circular crushing barrel, the top end of the square dust collection barrel fixedly communicates with a main dust collection cover, and the main dust collection cover communicates with the square crushing box. The square dust collection box, the main dust collection cover and the auxiliary dust collection cover respectively cover the square crushing box and the circular crushing barrel, paper scraps and dust generated in the crushing process can be collected, dust-containing air is sucked into the square dust collection box under the action of the negative pressure fan in the square dust collection box, and the dust-containing air is filtered by the filter screen and the filter element, so that the dust collection effect is improved. And dust is effectively prevented from diffusing to the surrounding environment.

The application discloses an automatic balance gas-reducing and dust conveying unloading replacement mechanism, which comprises a square cylinder, a conical cover is installed on the upper wall of the square cylinder, a conveying mechanism is arranged in the interior of the square cylinder and is used for conveying materials, a box body is internally provided with a vertical pipe, the outer surface of the vertical pipe is fixedly connected with the bottom wall of the square cylinder, an evaporation cylinder is slidably connected with the interior of the vertical pipe, the cooperation between a horizontal shaft, a gas pressure balancing mechanism, a horizontal plate and a sealing plate enables the gas in the evaporation cylinder to be extracted by an air pump and then enter the interior of the gas pressure balancing mechanism, the sealing plate is rotated under the control of the gas pressure balancing mechanism, the materials in the evaporation cylinder are discharged onto a conveying belt, the transportation of the materials after unloading is realized, the materials will not be caked after drying, and the pipeline will not be blocked.

The utility model provides a horizontal spiral discharge sedimentation centrifuge for desalination, and relates to the technical field of sewage desalination. The horizontal type desalting spiral discharging sedimentation centrifuge comprises a centrifuge bottom plate, and a horizontal type desalting spiral discharging sedimentation centrifuge body is installed at the top of the centrifuge bottom plate. According to the horizontal spiral discharging sedimentation centrifuge for desalination, a limiting frame is far away from a mounting frame, a connecting rod drives one rack to move through one moving plate, at the moment, a reset spring arranged on the outer side of the connecting rod in a sleeving mode is in an elastic compression state, and the two racks are both engaged with a gear; by means of the structure, the multiple closed lifting rings can be disassembled synchronously, multiple times of disassembly by personnel are not needed, and the disassembly progress is accelerated. The two racks drive the two moving plates to move in the opposite directions, and the two connecting blocks move towards the interiors of the two square cylinders correspondingly, so that the closed lifting rings are released from limitation. The structure can be used for disassembling the multiple closed lifting rings synchronously, and multiple times of disassembly by the personnel are not needed, and the disassembly progress is accelerated.

The utility model relates to the technical field of sand mixers for casting, and discloses a sand mixer for casting capable of conveniently adjusting discharge flow, which comprises a stabilizing block, the top end of the stabilizing block is fixedly connected with a sand mixer body, one end of the sand mixer body is fixedly provided with a discharge opening, the discharge opening is internally and fixedly provided with a discharge square cylinder, and the discharge square cylinder is fixedly connected with the stabilizing block. Rotating grooves are formed in the two ends of the interior of the square discharging barrel, rotating rods are rotationally connected between the two ends of the interior of the two rotating grooves, and a first motor, a two-way screw, a rotating screw sleeve, a moving plate and a moving rod are used in cooperation, so that a closing plate is pushed, and the closing plate is turned over with the rotating rods as the circle center; and when the two closing plates make contact with each other, closing of the discharging square barrel is completed, the discharging amount of raw material discharging is controlled under adjustment of the closing plates, and the using effect of the sand mixer is improved.

The utility model relates to the technical field of flashing structure molds, and discloses a flashing arc-shaped protective layer construction mold which comprises a balance weight reference frame. The automatic withdrawing mechanism is fixedly mounted on the outer surface of the counterweight reference frame, and the automatic withdrawing mechanism is used for withdrawing the mold at regular time; and the arc-shaped mold mechanism is fixedly connected to the working end of the automatic withdrawing mechanism, and the arc-shaped mold mechanism is used for carrying out forming and supporting treatment on the mortar. Through the design of the time control switch, the electric valve can be opened in a timed mode, after mortar is formed, gas in the square barrel can be released, the extension shaft body is promoted to contract towards the inner cavity of the square barrel under the influence of the initial elastic force of the elastic piece, and the arc-shaped mold mechanism is driven to integrally move in the direction away from the mortar; the automatic timed withdrawing function is achieved, the problem that the natural air drying efficiency of the arc-shaped mold mechanism is affected due to the fact that the arc-shaped mold mechanism is continuously attached to mortar is solved, and the construction progress is guaranteed.

The invention relates to the technical field of coating detection, in particular to a coating adhesive force detection device which comprises a workbench, a hydraulic host is mounted on the workbench, a sleeve is in threaded connection with the lower portion of the hydraulic host, a test column is fixedly connected to the lower end of the sleeve, and a pressing assembly is connected between the sleeve and the test column; the test column is a square cylinder, the bottom of the test column is fixedly connected with an elastic sheet, the elastic sheet wraps the bottom of the test column, a plurality of small steel balls are placed in the test column, and the pressing assembly is located above the small steel balls. Through the arrangement of the test column and the pressing assembly, the problem that in the prior art, only a plane coating is detected in coating adhesive force detection is solved, the function that one detector can detect the plane coating adhesive force or the cambered surface coating adhesive force is achieved, and the completeness of coating adhesive force detection is improved.

The utility model relates to the technical field of reservoir dam protection, disclose a reservoir dam flood control reinforcing structure, including mounting panel, two -stage shock -absorbing buffer structure, movable plate, primary shock -absorbing buffer structure and hit cover shell, the hit cover shell is the square tube structure of one end closed, and the arc plate is formed to the closed end, and the movable plate is movably matched and is arranged in the hit cover shell, and with the arc plate between the hit cover shell is connected through primary shock -absorbing buffer structure. Compared with prior art, the advantage lies in: the hit cover shell directly meets the water wave, thereby effectively preventing the water wave from directly attacking the reservoir dam, after the hit cover shell is impacted by the water wave, the arc plate of the hit cover shell can change the direction of the water wave, so as to relieve the impact of the water wave, and then the rubber air bag can exert the damping effect, and the damping spring telescopic rod and spring steel sheet can further provide the damping effect, thereby exerting effective damping protection effect for the reservoir dam.

The utility model provides a lithium ion battery structure. An inner cavity of a shell is uniformly divided into a plurality of monomer accommodating spaces through partition plates; each core body is accommodated in the corresponding single body accommodating space; the injection molding cover plate is integrally formed by a plastic plate and a plurality of pole columns through nano injection molding, a seal is formed between the injection molding cover plate and the open square cylinder on the upper side of the shell and is used for accommodating a plurality of separated core bodies, and connecting channels for the pole lugs to penetrate through are formed in the pole columns; according to the lithium ion battery module disclosed by the utility model, the core bodies are connected in series / in parallel to be directly assembled into the module, so that the manufacturing cost is reduced, and the space utilization rate is improved; according to the top cover structure, the plastic plate and the pole are integrally formed through nanometer injection molding, the bonding strength between different materials and the excellent waterproof air tightness are improved, meanwhile, the number of parts of the top cover structure is reduced, assembly of the top cover structure is simplified, and the top cover structure is made to be light in weight.

This invention relates to a dual-duct area independently adjustable circular-to-square two-dimensional vector nozzle, belonging to the field of aero-engine technology. The nozzle includes a circular-to-square cylindrical body, a main duct and a second duct adjustment vane system, a heat shield assembly, and an actuation mechanism. The second duct airflow channel, formed by the circular-to-square cylindrical body and the heat shield, has a circular-to-square cross-section transition. The main duct airflow passes through the central cavity enclosed by the heat shield. A rocker arm-actuator mechanism independently drives the outer duct adjustment vanes to adjust the second duct area, while the main duct adjustment vanes control the throat area, exit area, and thrust vector. The low-temperature airflow from the second duct cools the heat shield. This invention integrates independently adjustable dual duct area, circular-to-square cross-section transition, and two-dimensional vector function, offering advantages such as compact structure, good thermal protection performance, and high adjustment precision.