30 results about "Column design" patented technology

The invention discloses a method for determining the minimum cylindrical shell thickness of a core-filled concrete column, and relates to the technical field of constructions.The method for determining the minimum cylindrical shell thickness comprises the steps that the first cylindrical shell thickness meeting the design bearing capacity condition of the core-filled concrete column is calculated; calculating the thickness of a second cylindrical shell meeting the requirements of the construction pouring stage; calculating a third cylindrical shell thickness meeting the construction requirement that the stirrups and the longitudinal bars are pre-embedded in the cylindrical shell; and selecting the maximum value of the first cylindrical shell thickness, the second cylindrical shell thickness and the third cylindrical shell thickness, and determining the maximum value as the minimum cylindrical shell thickness. According to the method, the minimum column shell thickness value of the core-filled concrete column under different column heights and different design bearing capacities can be quantitatively determined in the design process through an effective acting stress model, a thick-wall cylinder theory and other theoretical models, the core-filled concrete column designed according to the minimum column shell thickness meets the requirements of engineering design, column shell materials can be saved, and the cost is reduced. And the utilization rate of the column shell UHPC material in the core-filled concrete column is improved.

The application discloses a reversing rotary lifting support based on a mining shovel plate carrier, relates to the technical field of shovel plate carrier load adjustment, and specifically comprises a bracket, a transmission ring is fixed on the top of the bracket through bolts, and a rotating mechanism is movably connected in the transmission ring and at the top of the bracket; the application is dynamically coupled through the rotating mechanism-limiting mechanism, single power source drives lifting-rotation composite action, the vertical displacement is realized through the cooperation of the lifting groove on the rotating sleeve and the slope of the supporting column, the automatic engagement of the limiting block and the temporary storage circular groove and the decoupling control of rotation start and stop eliminate the delay of function switching, introduce the bimodal constraint mechanism, the limiting block is clamped into the clamping groove on the inside of the lifting frame, the rotation degree of freedom is forcibly locked, after the supporting column reaches the top of the lifting groove, the adjusting column is slid to align the limiting block with the temporary storage circular groove, the mechanical constraint is released, the counterweight block and the independent rotating motor are cancelled, the gear ring-gear meshing transmission and the modular supporting column design are adopted, and the overall machine quality is reduced.

The application provides a kind of pier column steel part vertical non-matching forming industrialized construction method and construction device, comprising the following steps: S1, according to the shape and size of the steel mesh required by pier column design;S2, complete the welding of steel mesh;S3, steel mesh is placed in bracket;S4, use hook and cable to hoist the whole bracket and steel mesh into the first operation platform;S5, the two sides of the lifting appliance are installed with flexible cable;S6, the steel mesh of each layer is hung on the corresponding hook on the flexible cable;S7, the steel mesh in the bracket is hoisted in turn and the separation of the steel mesh is completed to form the mesh intermediate body;S8, continue to lift the hook to fix the lifting appliance and the upper cross beam on both sides;S9, install the alignment hanger on the lower side of the hook, and fix the main reinforcement in the mesh intermediate body through the positioning sleeve on the alignment hanger. The application is designed ingeniously, can greatly improve the production efficiency of steel parts, at the same time ensure the construction quality, thereby improve the efficiency of project construction.

The lock catch type rib outlet end mold comprises an end mold body and a lock catch circular ring, rib outlets are formed in the periphery of the end mold body, ribs are arranged in the rib outlets in a penetrating mode, threaded holes are formed in the two sides of the rib outlets, and the lock catch circular ring is arranged in the threaded holes. The end mold body comprises an upper end mold arranged at the top end of a prefabricated column and a lower end mold arranged at the bottom end of the prefabricated column, and the lock catch ring is arranged on the outer side face of the end mold body and comprises a lower semicircular ring, an upper semicircular ring hinged to the lower semicircular ring and lug plates fixed to the two sides of the lower semicircular ring. The two lug plates and the two threaded holes are arranged in a one-to-one correspondence mode and are fixedly connected through screws. The lock catch type rib outlet end mold for the prefabricated column is advanced in design, compact in structure and convenient to use, the slurry leakage problem in the concrete pouring process is avoided, the rib outlet position deviation can be avoided, then friction between the rib outlet and the end mold body can be avoided, and mold removal is convenient.

The utility model discloses a combined refrigerator for food processing, which belongs to the field of refrigerators and comprises two flat plates. The four stand columns are detachably arranged between the two flat plates through fixing pieces respectively; each stand column is formed by splicing two column bodies through a connecting piece. Two sliding grooves and two fixing grooves with T-shaped cross sections are formed in the outer wall of the column body. According to the combined cold storage for food processing, the column bodies are designed in a splicing mode, the internal space of the cold storage can be adjusted according to different use requirements, the applicability in the use process is improved, meanwhile, compared with an integrated cold storage, the cold storage can be disassembled before transfer, more transfer space can be saved, and the cold storage is convenient to use. The transportation cost is saved.

The utility model relates to the technical field of lighters, and provides a crow plate of an ignition frame of a grinding wheel lighter, which comprises a crow plate main body, and a fixed column II extending outwards is arranged on the crow plate main body; different production requirements are used for prying the air valve; a chamfer II is formed in the elliptical square opening structure of the lower radius of the front end; an elastic notch is further formed in the front end position of the front-end opening groove, the air valve can be easily pressed and buckled, pressing and buckling resistance is reduced, frictional resistance is optimized, the elastic buckling air valve is firmer, a third chamfer is arranged on the whole groove of the bottom of the opening groove, and arc-shaped oval blocks are arranged on the two sides of the periphery of the protruding position of the bottom of the rear end of the crow plate body and used for being suitable for automatic assembly and improving production efficiency; the assembly deviation rate is reduced by 90%; a chamfer II and a chamfer III are designed, so that the crow plate is not obstructed by the outside, and the wear life of parts is prolonged; and the second fixing column and the non-column design cover different production requirements, and automatic and manual assembly scenes are adapted.

1. Name of this design product: Storage Box (Roman Column Design). 2. Purpose of this design: For storing and displaying figurines, dolls, and other items. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The present application relates to the field of gas turbine design optimization, and particularly relates to a double-wall force support column design method for a gas turbine, comprising: obtaining complete constitutive curve data changing with temperature through high-temperature tensile experiment on all candidate materials; extracting principal stress direction vectors and forming a vector field; finally, after the skeleton model is solidified, assembling and performing Boolean operation with the heat shield entity and the fluid domains on the gas side and the cooling air side to obtain a complete double-wall initial calculation domain containing solid domains and fluid domains; establishing a three-dimensional coupled simulation model, and extracting key performance indicators through mesh division and multi-field solution on the simulation model. The present application forms a heat-force composite load path by combining heat flux and principal stress direction, and naturally forms a cooling air channel network in the low load area, thereby strengthening the heat dissipation effect through the internal cooling channel, realizing the collaborative optimization of mechanical bearing and thermal management, effectively improving the structural thermal stress distribution and improving the overall thermal stability.

The utility model belongs to the technical field of injection molding, and relates to a mixing component and an injection molding machine with the same. The mixing component comprises a mixing barrel body and a mixing and shunting inner barrel; a melting runner is arranged in the mixing barrel body in the axial direction, one end of the mixing runner is a feeding end, and the other end of the mixing runner is a discharging end; the mixing and shunting inner barrel is arranged on the inner wall of the melting runner; wherein the inner surface of the mixing and shunting inner cylinder is provided with net-shaped columns which are stacked and arranged along the axial direction. The mixing and shunting inner barrel designed by the utility model aims to increase the flow activity of molten plastic, so that the plastic is mixed more uniformly, and the mixing effect is enhanced; the net-shaped columns designed in the mixing and shunting inner barrel can shear the materials, the materials are layered through the net-shaped columns, and the speed difference between vortex and fluid is treated, so that the overall homogenization can be realized. When the mixing component disclosed by the utility model is used for mixing a material with a certain solid-phase material, a better effect can be exerted, and the color mixing and plasticizing effects of the material are more excellent.

There is described a central column for a toroidal field coil of a tokamak plasma chamber. The central column comprises a support member extending vertically along a central axis of the central column made from material with high compressive strength, and current carrying elements located radially outward of the support member. The support member is in structural contact with the current carrying elements so as to support them radially against compressive Lorentz stress.

The utility model discloses a magnetic filter with high sealing performance, which comprises a runner pipe, a mounting sleeve arranged on the runner pipe, a tank body arranged on the mounting sleeve, a cover plate arranged on the tank body, a sealing block arranged at the lower end of the cover plate, first threaded holes arranged on two sides of the cover plate, second threaded holes arranged on two sides of the upper end of the mounting sleeve, and a sealing block arranged on the sealing block. Bolts are in threaded connection with the interiors of the first threaded hole and the second threaded hole, penetrate through the cover plate and the tank body and make contact with the sealing block. The magnetic filter has the advantages that the high sealing effect of the magnetic filter is realized through the sealing block at the lower end of the cover plate and the fastening effect of the bolt. The sealing block adopts the silica gel column design, has good elasticity and sealing performance, and can be in tighter contact with the inner wall of the tank body through continuous extrusion of the bolt, so that fluid leakage and external impurity entering are effectively prevented.

The utility model relates to the technical field of electric ceramic cookers, in particular to a floating type control panel supporting structure of an electric ceramic cooker, which comprises a bottom plate with a plurality of connecting holes, a plurality of supporting columns are mounted above the bottom plate, and the supporting columns are in sliding connection with the connecting holes and are detachable; wherein a plurality of supporting columns are arranged on the bottom plate, a control panel is placed on the tops of the supporting columns, and mounting holes are formed in the end face of the control panel. Through the structural design that the connecting holes are formed in the end face of the bottom plate and the clamping jaws are arranged at the bottoms of the supporting columns, the clamping jaws are clamped in the connecting holes and are kept in a slidable state; according to the technical scheme, the positions of the supporting columns only need to be adaptively adjusted according to the positions of the mounting holes in the control panel, in this way, stable connection between the supporting columns and the mounting holes can be ensured, compared with a traditional directly-formed supporting column design, the floating type structure in the scheme can effectively eliminate assembly errors, and therefore the assembly stability and convenience are improved.

The invention belongs to the field of comb tooth structures, and discloses a comb tooth structure which comprises a first comb tooth module with a plurality of rows of first racks and a second comb tooth module with a plurality of rows of second racks. In any row of first racks of the first comb tooth module, a through hole is formed between every two adjacent first racks; a second rack of the second comb tooth module can penetrate through the through hole and is assembled with the first comb tooth module to form a comb tooth part; and in any row of racks of the comb tooth part, the gap between the adjacent first rack and second rack is a curved surface gap. The comb teeth adopt a multi-row design, and in any row of racks, the gaps between the adjacent first racks and second racks are curved surface gaps, for example, the first racks are convex-arc-shaped, and the second racks are concave-arc-shaped, so that the contact area between hair and the comb teeth can be increased and the hair straightening time can be prolonged through mutual matching of the curved surface gap structures; the hair straightening effect is improved by increasing the length of the hair straightening channel.

The utility model provides a reinforcing device for a linear wall constructional column formwork, which comprises a first support unit and a second support unit, the first support unit and the second support unit are respectively clamped on a left wall of a constructional column, the second support unit is clamped on a right wall of the constructional column, and a plurality of supporting units are detachably connected between the first support unit and the second support unit. The supporting units are provided with crimping units used for being pressed on the side faces of the formworks, and the supporting units and the crimping units are arranged on the front sides and the rear sides of the constructional columns correspondingly. The first support unit and the second support unit are clamped on the wall bodies on the two sides of the constructional column, and in combination with rigid connection of the supporting unit, lateral pressure during concrete pouring can be effectively resisted, and formwork expansion or displacement is prevented; the crimping unit ensures that the formwork is tightly attached to the design position of the constructional column, the quality defects of slab staggering, slurry leakage and the like after pouring are avoided, and the perpendicularity and flatness of a wall are improved; the positioning assemblies and the reinforcing assemblies at the tops of the first support unit and the second support unit can be adjusted up and down, and construction of linear wall constructional columns with different heights is met.

This utility model discloses a tool for adjusting the tightness of a corrector baffle, belonging to the field of papermaking technology. It includes a corrector valve body, with a baffle at one end connected to a valve core inside the corrector valve body; a support rod at the other end of the corrector valve body, with a spring base threadedly connected inside the support rod. A first spring is installed at one end of the spring base, and the other end of the first spring is connected to the valve core inside the corrector valve body. An iron block is provided at one end of the spring base, with protrusions at both ends of one side of the iron block. Limiting holes are opened at both ends inside the spring base, and the two protrusions are slidably connected inside the two limiting holes. A T-shaped column is provided at the end of the iron block away from the spring base. By rotating the T-shaped column, the position of the spring base inside the support rod can be easily adjusted. The T-shaped column design provides a larger lever arm, allowing the operator to complete the adjustment with only a small force, preventing slippage or displacement, and has low manufacturing cost.

The invention discloses a reversing rotary lifting support based on a mining shovel plate type carrier, and relates to the technical field of load adjustment of the shovel plate type carrier, the reversing rotary lifting support specifically comprises a bracket, a transmission ring is fixed to the top of the bracket through a bolt, and a rotating mechanism is movably connected in the transmission ring and located at the top of the bracket; through dynamic coupling of a rotating mechanism and a limiting mechanism, a single power source driving lifting-rotating composite action, matching of a lifting groove in a rotating sleeve and an inclined face of a supporting column, vertical displacement is achieved, automatic meshing of a limiting block and a temporary storage circular groove and decoupling control of rotating starting and stopping are achieved, function switching delay is eliminated, a bimodal constraint mechanism is introduced, and the function switching efficiency is improved. The limiting block is clamped into a clamping groove in the inner side of a lifted frame, the rotation freedom degree is forcibly locked, after the supporting column reaches the vertex of the lifting groove, the adjusting column slides to enable the limiting block to be aligned with the temporary storage circular groove, constraint is mechanically relieved, a balancing weight and an independent rotating motor are omitted, and the mass of the whole machine is reduced through gear ring-gear meshing transmission and modular supporting column design.

A machine tool (10) of column design, in particular a pillar drilling machine, comprising: a. a column (12) attached to a base plate (14), b. a bearing bridge (18) for a working tool (22), which is mounted to be displaceable in the axial direction of the column (12), c. a return spring (44) which acts on the bearing bridge (18) and is arranged between the bearing bridge (18) and an associated stop element (46), d. wherein the stop element (46) is adjustable on the column (12) in its axial direction and can be fixed by means of a clamping lever (50), e. wherein a complete machine head (24) is arranged on the bearing bridge (18) as a working tool (22), f. a rack (34) arranged on the column (12) which engages with a gear (38) associated with the bearing bridge (18), whereby the bearing bridge (18) is displaceable along the column (12), characterized in thata raised section (64) is provided on one of the toothless end sections (60) of the rack (34) facing the base plate (14) as a locking element (62) for the stop element (46) in order to prevent the bearing bridge (18) from slipping out of the rack (34), and that the raised section (64) is formed with an angle (74) with a short leg (76) and a long leg (78), wherein the short leg (76) bears at least partially against an end face (80) and the long leg (78) bears at least partially against the toothless end section (60) of the rack (34).

The application discloses a high-low double-column type power transmission structure and a column body design method thereof. The structure comprises a plurality of tower positions arranged in sequence. Each tower position comprises a horizontally extended cross arm. Two column bodies with a height difference in the vertical direction are connected to the cross arm. The two column bodies comprise a vertical column part connected to the cross arm. The bottom of the column body is further provided with a plurality of independent legs. The legs and the vertical column part are connected through a body part. The body part is composed of a plurality of connecting parts to adjust the height of the body part. The application has the advantages of strong adaptability to steep terrain, clear force bearing of the iron tower, simple structure, large transverse stiffness, good anti-deformation capacity, convenient construction, good economy and the like, and is especially suitable for use in mountainous large-load power transmission line engineering.

This invention relates to the field of auxiliary transportation technology in coal mines, and discloses a self-moving telescopic belt frame for a fully mechanized mining face conveyor, solving the problem of low stability. It includes a frame, with several sets of lifting columns at the left end of the frame. Several ordinary columns are located between every two lifting columns. A positioning frame is fixed inside each ordinary column and each lifting column. A main telescopic frame is hinged between every two positioning frames. Adjusting rods are provided on the inner side of each ordinary column and each lifting column. A bracket is fixed to the top of each set of adjusting rods. A main idler roller and a side idler roller are located on the top of each bracket. This invention can quickly, efficiently, and stably complete the extension and retraction of the entire machine, realizing long-distance overlap between the conveyor and the self-moving tail section after the belt frame of the fully mechanized mining face conveyor is removed. Simultaneously, the invention eliminates the influence of uneven roadway floors through a unique column design.

This application relates to the field of marine technology, specifically to a method, computer storage medium, and device for verifying marine portal frame pipe supports and columns. By supplementing the non-geometric parameters of the three-dimensional piping model, the model number of the pipe support column profile is retrieved using a lookup function from the pipe support column's empirical design parameter library. This model is then compared with the pipe support column model in the three-dimensional piping model. If they do not match, they are marked for subsequent processing by the designer; if they match, the verification passes. This verification method uses a lookup function from the pipe support column's empirical design parameter library to determine whether there are any unconventional designs or design errors in the pipe support column design. Compared to manual search and calculation verification, this verification method is more efficient.

The invention relates to a forming method of a near all-composite material gear, belongs to the field of gear manufacturing, and solves the problems that the tooth surface strength and wear resistance of an all-composite material gear are insufficient, and light weight and comprehensive mechanical properties are difficult to be compatible. The composite material gear base body is made of the resin matrix composite material, and the aluminum alloy reinforcing columns and the metal gear ring wrapping edges are arranged at the tooth roots, so that the weight of the gear is reduced by 40%-60%. The titanium-aluminum alloy powder transition layer is combined through the explosive bonding technology, a metallurgical-mechanical composite connection interface is formed, and the shear strength of the interface is larger than or equal to 700 MPa and is three times or above that of a traditional bonding technology. Aiming at the stress concentration of the tooth root, a three-dimensional stress transfer network is constructed by adopting the design of multiple rows of gradient diameter reinforcing columns and combining an explosion combination process, so that the fatigue life and the stability of the gear are improved. High-efficiency transmission, low inertia resistance and low operation noise of the gear are realized under complex working conditions of high load, high-frequency alternating load and the like.

The invention discloses a parameterization design and quality analysis integration method for an offshore floating type fan platform. Establishing a parameterized assembly in SolidWorks, and binding key dimensions such as column spacing, inclination angle and draft depth to an external text configuration file through global variables; constructing a parameter matrix of a plurality of columns of design schemes in Excel; a Python central control platform reads parameters column by column and overwrites a configuration file, an API drives SolidWorks to automatically reconstruct a model, mass, volume, gravity center and rotational inertia are extracted, and the mass, the volume, the gravity center and the rotational inertia are written back to Excel according to an original column sequence to form a'design parameter-quality characteristic 'associated database. Manual intervention is not needed in the whole process, a design-analysis closed loop is achieved, evaluation of nearly hundreds of schemes is completed within a few minutes, and the design efficiency, data accuracy and optimization depth of the floating type platform are remarkably improved.

A machine tool (10) of column design, in particular a pillar drilling machine, with a column (12) on which a bearing bridge (18) for a working tool (22) is slidably mounted in the axial direction of the column (12), wherein the bearing bridge (18) is acted upon by a return spring (44) which is arranged in the area between the bearing bridge (18) and an associated stop element (46) which is adjustable on the column (12) in its axial direction and can be fixed in a predetermined operating position by means of a clamping lever (50), and wherein a complete machine head (24) is arranged on the bearing bridge (18) as a working tool (22), which contains a drive motor with gearbox in a housing (26) and has a tool holder (28), wherein a locking element (58) is provided which is designed to enable the bearing bridge (18) to be locked to the stop element (46), characterized in thatthat the locking element (58) has a spring element (62) designed in the manner of a strip-shaped spring clip, wherein a guide pin (84) is formed on the stop member (46) and the bearing bridge (18) has a recess (66), wherein the locking element is formed in the manner of a locking lever (90) which has on a first end section (92) a projection (94) that can be engaged in the recess (66) of the bearing bridge (18) and an opening (106) for receiving the guide pin (84) and on a second end section (96) an opening (100) for the passage of the clamping lever shaft (52), wherein a spring element, in particular a compression spring (104), is located between the locking lever (90) and the stop member (46).is arranged and that, by actuating the clamping lever (50), the locking lug (64) or the projection (94) automatically disengages from the recess (66) in the bearing bridge (18) when the stop member (46) is fixed on the column (12) and automatically engages in the recess (66) of the bearing bridge (18) when the stop member (46) is released on the column (12).

The present application belongs to the technical field of ceramic tiles, and particularly relates to a stair step anti-skid ceramic tile and an adjusting structure, which comprises a step tile, an anti-skid column, a metal mounting shell, a screw rod, a top plate, a spring, a metal sleeve and a mounting sliding sleeve. The anti-skid column is made of rubber material, and the anti-skid column protruding from the upper end surface of the step tile has an anti-skid effect, and is relatively safe compared with a metal strip. After the anti-skid column designed in the present application is worn after a period of use, the anti-skid column can be controlled to rotate through the adjusting structure, and the area of the anti-skid column protruding from the circular groove is changed. The anti-skid column does not need to be replaced, and the service life is increased. Moreover, after the anti-skid column cannot be used completely, the anti-skid column and the metal sleeve only need to be removed, and the anti-skid column is replaced, and the metal sleeve inside the anti-skid column can continue to be used, so that the cost is greatly reduced, and the use is relatively convenient.

1. The name of the design product: outdoor column (squirrel shape). 2. The use of the design product: for outdoor column design. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

The utility model is suitable for the technical field of cylinder copper cladding, and provides a cylinder copper cladding structure, which comprises a first half column, the second half column is detachably mounted on the first half column, and the second half column and the first half column are connected to form a cylinder; the first half column and the second half column are sleeved with the metal sheets respectively; bayonets are formed in the first half column and the second half column; the edges of the metal sheets can be buckled inwards and extend into the bayonets, and the metal sheets located on the first half column and the second half column can make contact with each other so as to limit each other and stabilize the edges of the metal sheets. According to the cylinder copper-clad structure provided by the scheme, convenient assembly and stable decoration of the cylinder are realized through a detachable half-cylinder design and an ingenious metal sheet fixing mode.

The utility model provides a combined beam column structure, which belongs to the field of beam column node structures, and comprises a prefabricated column, a prefabricated beam, a first reinforcing piece and a floor slab, the end part of the prefabricated beam is connected with the prefabricated column, and a stud is arranged at the top of the prefabricated beam close to the prefabricated column; the first reinforcing piece is located above the prefabricated beam and fixed to the side portion of the prefabricated column, and the floor slab is formed on the prefabricated beam and covers the studs and the first reinforcing piece; according to the structure, the first reinforcements are connected with the stand columns, so that the internal force of the first reinforcements can be transmitted to the stand columns, the effect that the internal force of the precast beam is transmitted to the precast columns is achieved, the frame beam and the first reinforcements (steel bars) in the floor form a combined beam, and a reliable force transmission method is achieved; therefore, the combined beam can be conveniently applied to the design of connecting the frame beam to the stand column, steel consumption is saved, materials are saved, and carbon is reduced.

The invention discloses a full-bore fracturing and same-well injection-production integrated tubular column design method, belongs to the technical field of exploration and development, improves the safety and efficiency of a drilling well entering a horizontal section through repeated drifting and redressing, realizes staged fracturing by using a well cementation sliding sleeve, can accurately act on different stratum sections, improves the reservoir permeability, and improves the production efficiency. And meanwhile, the injection section is flexibly adjusted according to injection and production requirements, the production strategy is optimized, and the oil and gas recovery efficiency and economic benefits are improved. Meanwhile, a special tool for the well cementation sliding sleeve is matched with the well cementation sliding sleeve, the tripping-in process is easy to operate, finally, the method is expanded to full-bore operation, the injection and production requirements within a larger range can be met, meanwhile, downhole operation of various measures can be met, convenience is provided for long-term production, and the well cementation sliding sleeve is a full-bore infinite-level switchable well cementation sliding sleeve and is convenient to use. The structure of an existing fracturing and same-well injection-production pipe column is simplified, the tripping-in process is easy to operate, later complex maintenance and other operations are not needed, and the overall operation efficiency is improved.

The utility model relates to the technical field of cleaning and screening, in particular to a wine brewing material cleaning and screening device. Comprising a cleaning structure, a conveying structure and a screening structure, the cleaning structure comprises a first tank body, the first tank body is of a cylinder design, a first motor is arranged at the top end of the first tank body, a stirring frame is arranged in the first tank body, and the top end of the stirring frame movably penetrates through the top end of the first tank body and is fixedly connected with the power output end of the first motor; a feeding pipe is arranged at the top end of the first tank body, a water injection pipe is arranged at the top end of the first tank body, a second material guiding pipe is arranged at the bottom end of one side of the first tank body, a valve is arranged on the second material guiding pipe, and the conveying structure is arranged on one side of the cleaning structure and comprises a second tank body. The corn screening device has the advantages that the surfaces of corns are cleaned before the corns are screened, dust and impurities on the surfaces are removed, then the cleaned corns are conveyed into the screening structure through the conveying structure to be subjected to multiple screening, and the screening efficiency is improved.

A column-type transfer four-axis robot includes a support frame, with a hollow column rotatably mounted on top of the support frame. The column has a lifting slider connected to a horizontal large arm, and a small arm rotatably connected to the end of the large arm away from the lifting slider. The small arm has a clamping flange. An extension rod extending towards the large arm is located above the column, with a lifting sprocket at the end of the extension rod away from the column. A tension spring energy storage device is housed within the hollow cavity of the column, and a drive sprocket is positioned directly above it. One end of a lifting chain is fixed to the large arm, and the other end passes over the lifting sprocket and the drive sprocket before being fixed to the top of the tension spring energy storage device. Unlike existing handling equipment, this robot uses an integrated column design, assembling all the necessary structures for basic functions, resulting in a simpler overall structure, easier maintenance, and the ability to perform essential functions at minimal cost.