48 results about "Square cross section" patented technology

The ant nest comprises a plurality of ant nest assemblies with the side faces tightly attached, each ant nest assembly comprises an ant nest body and a water box, and a transparent cover plate and a bottom plate are installed at the upper end and the lower end of each ant nest body respectively. A layer plate is horizontally arranged in the middle of the ant nest body and divides the ant nest body into an upper breeding area and a lower water storage area. The water box is arranged in the lower water storage area; the four corners of the outer side of the ant nest body are each provided with an installation notch with the square cross section, and two threaded holes which are distributed up and down and formed in the length direction of the side plate on the corresponding side are formed in each installation notch. A nest body connecting piece is mounted in each mounting notch through a positioning bolt, the nest body connecting piece is rectangular or rounded rectangular, the length of the nest body connecting piece corresponds to the height of the mounting notch, the ratio of the length to the width of the nest body connecting piece is 2: 1, and the outer side face of the nest body connecting piece is flush with the outer side face of the nest body on the corresponding side or is arranged in the mounting notch.

The utility model provides a pull disc whole-assembling structure which comprises a left side whole-assembling portion, a right side whole-assembling portion and a whole-assembling bottom, the left side whole-assembling portion and the right side whole-assembling portion are respectively clamped on two sides of the whole-assembling bottom to form a groove used for placing a pull disc, the groove is composed of a plurality of circular grooves, the plurality of circular grooves sequentially form steps, a front step is formed close to the left side whole-assembling portion, and a rear step is formed close to the right side whole-assembling portion. An inverted step is formed on the right side integral part close to the right side integral part, and each circular groove is matched with the pull disc. The stepped circular groove design is matched with a plurality of pull discs, anti-slip fall is naturally formed during stacking, one-key disassembly and assembly are achieved through the magnetic iron shaft structure, transportation and storage are facilitated, and the surfaces of the pull discs are prevented from being damaged by edges and corners due to arcing of the two ends of the rectangular section.

The utility model belongs to the technical field of cleaning machine, especially relate to the cleaning machine inner bag structure, be located in the shell of cleaning machine, including the cavity of top opening, cavity top end is equipped with the annular step position of outward extension, the bottom of step position is equipped with the installation component of downward extension, and installation component and the annular support component cooperation of shell top, the cavity has the gradually changing cross -section structure of big down small, and the upper part is square section and gradually changes into circular section downward, the cavity lateral wall below is equipped with the air inlet, and the cavity bottom forms the arc flow guide portion of downward concave, and the flow guide portion is equipped with high -level water inlet and low -level drain, when the airflow flows into the cavity from the air inlet, the cavity bottom forms the airflow channel of low resistance, and the vortex is formed to the airflow rotation movement, makes air along the inner wall spiral ascending, prolongs the airflow path, improves the drying efficiency to the inner bag and the article in the cavity. The gradually changing cross -section structure design of big down small, reduces stress concentration, promotes the overall strength of inner bag structure, strengthens the compression resistance.

The utility model relates to the technical field of large power transformer oil tank and structural part machining, in particular to a cylinder axis space tilting transformer ascending flanged base tool which comprises a base flange, a structural pipe, a first positioning plate, a second positioning plate and a pipe joint. The first positioning plate and the second positioning plate are both arranged above the base flange, and the pipe joint is arranged on one side of the structural pipe; a traditional working cylinder is replaced by the structural pipe, manufacturing is simpler, materials are saved, meanwhile, a traditional square flange can be replaced by the base flange, the size is smaller, the structural pipe can be conveniently matched with the first positioning plate and the second positioning plate to be accurately positioned due to the arrangement of the square section of the structural pipe, and the working efficiency is improved. The center line direction of the structural pipe is parallel to the axis of the ascending flanged base barrel, meanwhile, assembling of a traditional designed tool pipe joint and a cylinder arc face can be avoided, and the pipe joint can be conveniently and accurately positioned on the side wall of the structural pipe.

The utility model discloses a modular assembly type reinforced concrete bulletproof layer which comprises a bottom plate, a plurality of bulletproof units with square cross sections are arranged on the bottom plate, the bulletproof units are spliced to form a bulletproof layer, and the bulletproof layer is formed by splicing a plurality of bulletproof layers. Each bulletproof unit comprises four strip-shaped reinforced concrete modules with the same size and a square reinforced concrete module, and the square reinforced concrete module is embedded in a middle gap formed by the four strip-shaped reinforced concrete modules which are in butt joint end to end in sequence; longitudinal steel screws are arranged on the strip-shaped reinforced concrete modules and the square reinforced concrete modules and penetrate through all the bulletproof layers. The strip-shaped reinforced concrete modules and the square reinforced concrete modules on the adjacent bulletproof layers are opposite in trend and staggered. The steel screws can penetrate through the multiple layers of concrete modules, on one hand, the assembly function is achieved, and on the other hand, the overall shear strength is provided. And the modular assembly type bulletproof layer is adopted, so that the energy consumption mechanism is rich.

This invention discloses a beam formwork installation and reinforcement device for confined spaces, comprising a disc-lock frame. An aluminum alloy beam bottom horizontal plate is mounted on top of the disc-lock frame, and a beam bottom support formwork is installed above it. A first timber beam is installed between the two. The inner side of the formwork is a concrete beam with integrated columns. Irregularly shaped metal rods with steel plates and clearance grooves are installed on the outer sides of the formwork on both sides of the columns. These irregularly shaped metal rods are connected by a connecting assembly. A second timber beam is installed between the two columns, with both ends contacting small channel steel. L-shaped fixing clips are fixed to the small channel steel. The connecting assembly replaces the original first nut with an end assembly, which includes a magnetic end plate, a square-section threaded sleeve, and a limiting nut. This invention adapts to confined space layouts through a modular aluminum alloy beam bottom horizontal plate and achieves precise reinforcement of the beam formwork while being suitable for operation in confined spaces using irregularly shaped metal rods with clearance grooves and a connecting assembly containing end assemblies.

This utility model relates to a suspension coil spring coating fixture, belonging to the technical field of coating fixtures. It includes a main hanging rod, with multiple part hook assemblies detachably connected to both sides of the main hanging rod. These part hook assemblies are used to suspend the suspension coil springs. Each part hook assembly includes a V-shaped hook and a connecting block, which are fixedly connected. The V-shaped hook has a V-shaped body and a square cross-section. During suspension, the edges of the square cross-section contact the spring, reducing the contact area between the fixture and the spring, thereby minimizing the impact of the hooking point on the powder coating process. This suspension coil spring coating fixture, by setting multiple part hook assemblies on the main hanging rod, increases the number of springs that can be suspended, thus improving the powder coating efficiency of the coating production line. Simultaneously, by setting the V-shaped hook with a square cross-section, the contact area between the fixture and the spring is reduced, thereby minimizing the impact of the hooking point on the powder coating process.

The invention belongs to the technical field of superconducting material processing, and discloses a high-n-value NbTi superconducting wire and a preparation method thereof. The method comprises the following steps: firstly, bending a special-shaped soft copper flat belt on line to form a thin-wall copper slot line, and then embedding and welding the thin-wall copper slot line to the surface of a low-copper-ratio and small-size composite round wire to obtain a large-copper-ratio NbTi superconducting composite wire with a round or round-corner square cross section. And finally, performing small-size stretching to obtain the high-n-value NbTi superconducting wire with a circular or rounded rectangle-shaped cross section. According to the preparation method, the problem that due to the fact that the hardness and work hardening difference of Cu and NbTi is large, and large-work-amount stretching and rolling are conducted, the synergistic deformation of the Cu and NbTi core wires is poor can be effectively solved, the deformation uniformity of the core wires is improved, and under the condition that the copper ratio of the prepared NbTi superconducting wire is 3-6, the n value is not lower than 43.

The invention discloses a lateral wide-area wave-transparent high-strength composite material pod structure and application, the lateral wide-area wave-transparent high-strength composite material pod structure comprises a pod main body with a square cross section, and the pod main body comprises an upper beam, a lower beam, an end frame, a common skin and a side skin; the side surface skins are adopted as wave-transparent radomes on wave-transparent surfaces on two opposite sides of the pod main body; the other non-wave-transparent surfaces of the pod main body are provided with the common skin; wave-transparent structures are arranged in the edge areas, adjacent to the side skin, of the upper beam and the lower beam, the wave-transparent structures are made of wave-transparent composite materials, and one side of each wave-transparent structure and the common skin on the upper beam and the common skin on the lower beam are integrally formed in a layered mixed laying mode; and the other side of the wave-transparent structure is connected with the side skin.

The present disclosure relates to the field of machining and production of a tool table. Disclosed is a tool table convenient for folding, comprising a table plate body having a concave accommodating cavity at a bottom thereof, two ends of each of parallel rotating shafts being respectively rotatably connected to side walls of the accommodating cavity at the corresponding sides; support legs, an end of each of the support legs being connected to a rotating shaft and the support legs being mounted in the accommodating cavity in a foldable manner, and a connecting plate being fixedly connected between the two support legs; and reinforcing rods, which are hollow rods with a square cross section are provided between the two rotating shafts, an end of each of the reinforcing rods being connected to a rotating shaft.

The application provides a double-layer sole forming die and a forming process, and belongs to the field of forming processing.The double-layer sole forming die comprises an outer shell and through grooves.The outer shell has a square cross section and three through grooves and one feeding port are arranged on the side wall.Four first dies are arranged in an array in the inner cavity of the outer shell, and a rotating shell is arranged at the center of the outer shell.A mounting plate is arranged on the first die.An installation frame is fixedly connected to the front through groove of the outer shell.A second die is arranged in the installation frame.A die mounting assembly is arranged on the mounting plate and the installation frame.The first die can move to the position of the through groove and the feeding port through the operation of the position adjusting assembly, so that one layer of forming, glue spraying, two layers of forming and material taking can be simultaneously performed, the overall forming efficiency is significantly improved, and the first die can be continuously converted between different process positions through the operation of the rotating assembly, so that the efficiency of double-layer sole forming processing is effectively improved.

The application provides a hollow thin-wall fan tower drum with special-shaped steel column bundles, and belongs to the technical field of fan tower drums. The application solves the problems of large steel consumption, high construction difficulty, unreasonable stress and inability to fully exert the material characteristics of steel in the existing fan tower drum structure. The application comprises special-shaped steel column bundles, a tower drum body and a stiffening rib structure. The tower drum body is formed by two concentric steel plates with different diameters. The special-shaped steel column bundles are arranged inside the hollow cylindrical structure and connected with the inner wall of the tower drum body. The number of the special-shaped steel column bundles is multiple. The multiple special-shaped steel column bundles are arranged along the circumferential direction. The multiple special-shaped steel column bundles are connected through the stiffening rib structure. The cross section of the special-shaped steel column bundles is a V-shaped, trapezoidal or square special-shaped cross section or multiple V-shaped, trapezoidal or square cross sections connected transversely or a structure formed by the combination of multiple special-shaped cross sections. The cross section size of the special-shaped steel column bundles gradually changes along the height direction of the tower drum body. The application is mainly used for fan tower drums.

This product is a pair of cooking chopsticks. The square cross-section has a rounded, comfortable shape that fits the fingers well, providing a gentle feel. The handle is thicker for a better grip, and the rounded, tapered tip prevents tangling and makes handling easier. The tapered tip facilitates detailed work. The tip is made of heat-resistant silicone rubber. The silicone rubber tip prevents scratching Teflon-coated pots and delicate tableware, and reduces the noise of the chopsticks hitting pots and pans during cooking. Furthermore, the silicone rubber is flush with the chopstick body, eliminating any recesses that easily become soiled.

A turbofan gas turbine engine comprises, in axial flow sequence, a heat exchanger module, a fan assembly, a compressor module, a turbine module, and an exhaust module. The fan assembly comprises a plurality of fan blades defining a fan diameter (D). The heat exchanger module is in fluid communication with the fan assembly by an inlet duct, and the heat exchanger module comprises a plurality of radially-extending hollow vanes arranged in a circumferential array with a channel extending axially between each pair of adjacent hollow vanes. The heat exchanger module has a square axial cross-sectional profile, where a side length of the square cross-section is D.

The application discloses a forming method of a large valve body forging for nuclear power, which comprises the following steps: S1, selecting a blank, performing upsetting and elongation deformation, refining the grain structure of the forging, and obtaining a square solid blank; S2, heating the square solid blank in S1 by re-melting, and deforming the two end portions from a square surface into a circular cross section after heat preservation; the initial forging temperature is 1100±20 DEG C, the heat preservation time is calculated according to the thickness of the square solid blank when entering the furnace, and is 0.2-0.4 min / mm, and the final forging temperature needs to be greater than 850 DEG C; S3, heating and heat preserving the forging after processing in S2 by a reversing furnace, and then performing the next fire forging; the initial forging temperature is 1080±20 DEG C, the heat preservation time is calculated according to the thickness of the blank when entering the furnace, and is 0.2-0.4 min / mm; the final forging temperature needs to be greater than 850 DEG C; and in the finishing forming process, the middle square cross section part is elongated to the size of the forging first, and then the two circular cross section parts are respectively rolled and elongated to the size of the forging. The scheme solves the problem of coarse grains of the profiled forging.

The application discloses a kind of forging methods of bending rudder bar, belong to bending rudder bar technical field, including selecting the steel blank of circular or square section;Steel blank is preheated;Forging operation includes cutting shoulder with lower chopper, lengthening, bending;When cutting shoulder with lower chopper, adopt shoulder 200mm with inclination;After cutting shoulder with lower chopper processing, install on square drawing machine and carry out lengthening;When bending, bending rudder bar is placed between flat anvil and V-shaped anvil using clamp fixed, and using hammer head to exert force;After forging operation is completed, the size of bending rudder bar is calibrated;After size calibration, bending rudder bar is heat treated;After heat treatment, the quality of bending rudder bar is inspected;After quality inspection, the surface of bending rudder bar is treated and sprayed;The slope of shoulder with inclination can make stress distribution more uniform, reduce the concentration of local stress, so as to improve the strength and fatigue resistance of ship bending rudder bar;Meanwhile, shoulder with inclination can reduce material loss in cutting process.

The utility model relates to numerical control machine tool technical field discloses a heavy cutting's crown block gantry five -face processing center, including the workstation, the workstation both sides symmetry is provided with the stand, two the stand top end is erected with the crossbeam, install the slide saddle and the slide saddle sliding connection's slide ram on the crossbeam, the slide ram lower extreme is connected with the universal head, drive system, including for driving the crossbeam, slide saddle and the slide ram move's X axle double screw rod synchronous drive mechanism, Y axle screw rod drive mechanism and Z axle screw rod drive mechanism, the utility model discloses through X axle double screw rod synchronous drive, ensure the positioning accuracy when crossbeam big stroke movement, cooperate Y, Z axle screw rod drive, promoted the stability of multi -shaft linkage processing, effectively solved the problem of single screw rod drive synchronous accuracy deficiency. The slide ram adopts the square cross section hard rail structure and cooperates the hydraulic balance oil cylinder, compared with traditional cylindrical section anti -deformation ability significantly enhances, and the stability is better when heavy cutting.

The utility model belongs to the technical field of diesel engine main engine manufacturing, and particularly relates to a round-top and square-bottom connecting device. The outer diameter of the upper end round flange is matched with that of a round flange of a ship smoke exhaust pipe; one end of the transition round pipe is welded to the upper end round flange, and the other end is gradually shrunk into a square section; the lower square flange is welded to the square end of the transition round pipe. The lower straight pipe section is vertically connected to the lower end of the lower square flange; the pressure sensor welding seat is arranged on the side wall of the transition circular pipe and is used for mounting a pressure sensor; the temperature sensor welding seat is arranged on the side wall of the lower straight pipe section and is used for mounting a temperature sensor; and the at least two screwed plugs are respectively in threaded connection with the pressure sensor welding seat and the temperature sensor welding seat and are used for plugging or opening the sensor interface. The structure adaptability is enhanced, the safety is high, the installation efficiency is high, and the installation difficulty is reduced.

The invention belongs to the technical field of gear rounding machining and manufacturing, and relates to a gear rounding machining method and device based on a ball-end cutter and a storage medium. The method comprises the following steps: discretizing a processing contour line to obtain a plurality of discrete points, and constructing a square section at each discrete point; the intersecting line of each square section and the gear to be machined is obtained to serve as a rounding section line; the rounding section lines are offset inwards to construct arc segments; discretizing each arc segment to obtain a plurality of contact points, and dividing the contact points with the same serial number on each arc segment into a group of tool path points; connecting the contact points in each group of tool path points along the tool path direction to obtain a connecting line, and obtaining the curved surface normal direction of the contact point based on the cross multiplication of the tangential direction of each contact point at the connecting line and the tangential direction of the arc segment; cutter location point information at each contact point is calculated based on each contact point, the normal direction of the curved surface of each contact point and preset cutter shaft information, so that a machining cutter path is obtained.

The invention is a storage system made of cardboard, which has a space-delimiting structure (10) with a U-shaped, vertical back panel (1) and side panels (2, 3) connected thereto, and storage elements that can be placed in said storage system. At the ends of the side panels (2, 3), there are closed columns (4, 5) with right-angled square sections, open at the bottom and top.  

The utility model discloses a four-point bending device. The four-point bending device comprises a base; the first supporting frame and the second supporting frame are connected to the base in a sliding mode, and each of the first supporting frame and the second supporting frame is provided with a first hoop used for fixing a component with a circular outer section and a supporting plate used for supporting a component with a square outer section; the first shaft of the first hoop is rotatably connected to the two vertical plates of the first support frame or the second support frame, and the second shaft of the support plate is rotatably connected to the two vertical plates of the first support frame or the second support frame; and the pressure applying assembly is used for applying pressure to the component with the circular outer section and the component with the square outer section, the pressure applying assembly comprises a first pressure applying frame, a second pressure applying frame and a transverse plate, and the first pressure applying frame and the second pressure applying frame are each provided with a second hoop used for fixing the component with the circular outer section and a pressure applying plate used for applying pressure to the component with the square outer section. The four-point bending device disclosed by the utility model can be used for carrying out four-point bending tests on components with circular sections and square sections.

The utility model discloses an auxiliary mechanism for hoisting, which relates to the technical field of hoisting accessories, and comprises two transverse members and two longitudinal members, and the two transverse members and the two longitudinal members are assembled to form a rectangular body; lifting rope limiting mechanisms are arranged on the two sides of the two longitudinal components and used for limiting steel cables. The two longitudinal members are arranged at the two side ends of the two transverse members and are assembled in a welded mode, displacement and slipping of the steel cable can be effectively prevented by arranging the two galvanized angle steels which are spaced by a certain distance, abrasion of the steel cable during use can be effectively prevented by arranging the arc plates, and the transverse members are welded to be of a hollow tubular structure with the square cross section, so that the service life of the steel cable is prolonged. Transverse pressure from the steel cables on the two sides can be better resisted, the structure is simple, and connection is reliable.

The utility model relates to the field of luggage, concretely relates to a luggage case mouth frame structure with trapezoidal plug-in rod, including two mouth frames and plug-in rod, mouth frame be equipped with box shell clamping mouth, main zipper clamping mouth and lining cloth zipper clamping mouth, two mouth frames symmetrically lay out, and the main zipper clamping mouth and lining cloth zipper clamping mouth are all the cavity of square cross section, and be equipped with the opening in one side of square cavity, the cross section of plug-in rod is trapezoidal, and four plug-in rods can be inserted into the zipper sleeve of embedding in main zipper clamping mouth and lining cloth zipper clamping mouth respectively. The cross section of plug-in rod is trapezoidal and the bottom edge of trapezoidal is adjacent to the opening of zipper clamping mouth, make the pressure contact area of plug-in rod and the opening of one side of main zipper clamping mouth and lining cloth zipper clamping mouth increase fully, and the gap between the two sides of plug-in rod and the side wall of main zipper clamping mouth and lining cloth zipper clamping mouth can also be left to reduce the resistance when plug-in rod is inserted, thereby improving the installation efficiency of zipper.

The utility model discloses a high-capacity runner for a melt spinning fiber production line, which comprises a feeding plate, and a horizontal runner and a vertical runner are arranged on the feeding plate; the upper part of the vertical runner is sealed by a large plug, the lower part of the large plug is provided with a first guide cambered surface, the lower part of the vertical runner is connected with a sub-runner, and the included angle between the sub-runner and the axis of the feeding plate is 60-80 degrees; each branch runner comprises an opening formed in the side wall of the feeding plate, and each opening is sealed through a small plug; an annular distribution groove is formed in the lower end surface of the feeding plate, the distribution groove comprises an upper groove with a triangular cross section and a lower groove with a square cross section, a plurality of sub-runners communicated with the sub-runners are arranged at the upper part of the upper groove corresponding to the sub-runners, and the sub-runners and the sub-runners have the same inner diameter; and the included angle between the sub-runner and the sub-runner is greater than 110 degrees.

This application relates to the field of 3D modeling technology for textiles, and particularly to an adaptive modeling method for 3D woven fabrics with square cross-sections based on the digital unit method. The method includes: obtaining the structural geometric parameters of the 3D square woven fabric to be modeled; establishing a yarn fiber bundle model using the digital unit method; simulating the interlacing process of the square cross-section woven fabric based on a four-step weaving method to establish a topological woven fabric structure; combining the topological woven fabric structure with the structural geometric parameters to determine the simulation region and generate a yarn unit cell model; and iteratively discretizing the yarn unit cell model to output a stable 3D square woven fabric geometric structure. The method designed in this application can accurately simulate the fiber distribution and interlacing morphology of square cross-section woven fabrics while maintaining a low parameter count, and simultaneously solves the error problem caused by the idealization of the cross-section in existing modeling methods.

The invention relates to a method for reconstructing a turbulence wake of a square-section building from random sparse data, and the method comprises the steps: constructing a generative adversarial network architecture with a U-Net as a generator and a convolutional neural network as a discriminator, and enabling the generative adversarial network architecture to be used for building end-to-end mapping from low-dimensional sparse input to high-dimensional full-field output; performing tensorization coding on sparse wind speed values acquired by a sensor at any moment and corresponding space coordinates to form dual-channel input including a wind speed value channel and a position information channel; in the training process, the vortex street periodicity of the square-section building streaming is used as physical prior, and the phase consistency constraint based on the phase difference is applied to the U-Net bottleneck tensor to embed periodicity information; a combined training strategy is adopted, and a combined loss function composed of adversarial loss, numerical reconstruction error loss and phase consistency constraint loss is used for alternately optimizing the generator and the discriminator; and after training, verifying the generalization and interpretability of the model.

The invention provides a design method of an aircraft nose connected with a square-section fuselage. The design method comprises the following steps: step 1, establishing a rectangular coordinate system oxyz; 2, in the rectangular coordinate system oxyz, according to the length of the aircraft nose and the downward declination angle of the aircraft nose, the position of the vertex A of the aircraft nose is determined, and the vertex A of the aircraft nose is in the xoy plane; 3, establishing a machine head guide line 1 between a machine head vertex A and a machine body section center point B; 4, according to the machine head vertex A and the machine head guide line 1, a machine head upper control line 2, a machine head lower control line 3, a machine head left control line 4 and a machine head right control line 5 are established. And 5, establishing a machine head arc cross section line HJIK. And step 6, establishing a transition curved surface 30 between the machine head arc cross section line HJIK and the machine body square cross section. And step 7, establishing a machine head upper curved surface 31 and a machine head lower curved surface 35 at the front part of the machine head arc cross section line HJIK. And 8, combining the transition curved surface 30 with the nose upper curved surface 31 and the nose lower curved surface 35 to form the airplane nose with the square-section fuselage.

The present application relates to the field of tea brick production, and discloses a tea shearing machine, which comprises a machine body, a driving cylinder arranged on the top of the machine body, and a pushing plate arranged on the output end of the driving cylinder in the horizontal direction, the bottom surface of the pushing plate is uniformly provided with a plurality of pushing pieces with square cross sections in the vertical direction, there is a set distance between any two adjacent pushing pieces, a discharging plate is arranged on the machine body in the horizontal direction, a plurality of discharging holes corresponding to the pushing pieces are formed on the discharging plate in the vertical direction, a pressing plate is movably arranged on the machine body in the horizontal direction, the pressing plate is located between the discharging plate and the pushing pieces, a plurality of pressing holes corresponding to the discharging holes are formed on the pressing plate, and the pushing pieces can drive the pressing plate to ascend and descend; the discharging plate is matched with the pressed tea brick, then the pressing plate is abutted on the tea brick under the driving of the pushing pieces, and then the pushing pieces are driven by the driving cylinder to push the tea brick for slitting, so that manual operation is not needed, and the production cost is greatly saved.

A system for making resin solutions includes a washer tub having an inner wall, an outer wall aligned parallel with the inner wall and spaced apart from the inner wall by a gap, and a sloped floor disposed within the inner wall. The inner wall, the outer wall and the sloped floor form a basin including a square cross-sectional shape with four rounded corners. A fluid circulation loop is located in the gap between the inner wall and the outer wall and wraps around the inner wall more than once for controlling a temperature of the washer tub. An impeller is centrally located above the sloped floor, an electric motor rotates the impeller under control of a controller, and a user interface receives instructions for various operating cycles of the impeller.

The invention discloses a multifunctional experimental device for acquiring ablation data of a solid rocket engine under multiple conditions, which comprises a combustion chamber section, a primary convergence section which is of a conical structure with a large upper opening and a small lower opening, an eddy current experimental section which is of an L-shaped cylindrical structure with a square cross section, and a secondary convergence section which is of a cylindrical structure with a large left end opening and a small right end opening, the left end is coaxial and mutually communicated with the right end of the transverse section of the eddy current experiment section, and the right end is sequentially communicated with a high-speed experiment section and an overload section which are inclined upwards from left to right; wherein the eddy current experiment section is used for generating eddy current in the eddy current experiment section and generating overload in the overload section after the eddy current passes through the high-speed experiment section, and then ablation data is obtained according to the ablation condition of each test piece; according to the invention, airflow vortex, high-speed fuel gas flow and fuel gas overload generated in the engine can be simulated at the same time, so that thermal insulation layer ablation data under various conditions can be obtained.