271 results about "High loading" patented technology

A logistics loading work control system includes a server configured to mirror facility data of an actual logistics facility and a virtual environment, for example, based on a digital twin. The system also includes a packaging simulator configured to calculate cargo information corresponding to a loading area received from the server through a loading algorithm and predict priority cargo information in a sequence of highest loading efficiency with respect to a current work-target cargo container, and a worker terminal configured to assist a logistics loading work of a worker by deriving a scenario branch-type loading sequence and an expected loading rate based on a logistics loading situation inside the loading area through the packaging simulator and providing a recommended cargo logic according to the derived result.

Aircraft high-load landing event detection, classification and maintenance guidance methods relate to the technical field of aircraft high-load landing event detection. The aircraft high-load landing event detection method collects complete and accurate landing data online during an aircraft landing process and performs an analysis and calculation to determine whether a high-load landing event occurred and determines the type of the high-load landing event. The aircraft high-load landing event detection method removes the high-load landing event determination from the pilot's subjective perception and does not need to wait for decoding of quick access recorder (QAR) data, greatly improving the accuracy and timeliness of high-load landing event detection. In addition, by analyzing and estimating structural loads of the aircraft, the aircraft high-load landing event detection method provides targeted maintenance recommendations for possible aircraft structural damage caused by the high-load landing event, and forms a corresponding report.

Concentrated dispersions of silver nanowires are used to prepare qualitatively distinct silver structures with a range of properties. The concentrated dispersions can have a high weight percent of silver nanowires and can be formulated to be flowable liquids or non-flowing pastes. The concentrated dispersions can be stable with no visible settling over the course of a week, can have non-Newtonian rheology, and can be diluted to a desired weight percent of silver nanowires without detrimental effects on the uniformity of the dispersions. The concentrated dispersions can be formulated with or without polymers or pre-polymer components. The concentrated dispersions can be formulated with silver salts to adjust dispersion of the silver nanowires and to improve electrical conductivity of cured silver structures formed from the dispersions. Methods for forming the concentrated dispersions are described as are methods to form silver structures from the dispersions.

The invention relates to a tool surface microstructure laser additive filling modification process, in particular to the technical field of tool machining, and the tool surface microstructure laser additive filling modification process comprises the following steps that S1, microstructure design is conducted, specifically, the type of a microstructure is determined according to the tool service condition, the microstructure is of a groove type or a dot matrix type or a two-dimensional or three-dimensional structure, the design depth is 50-800 microns, and the distance between every two adjacent structures is 50-800 microns; according to the tool, the reinforced lubricating composite filling layer is constructed in situ in the micro-texture concave area of the tool, precise filling with the deep micro-texture depth reaching 800 microns is achieved, the filling layer remarkably enhances the mechanical strength of the micro-texture area while providing a chip storage and lubricating space, and therefore the tool can have the good cutting performance under the conditions of high-speed cutting and high-load machining, and the service life of the tool is prolonged. The bending strength attenuation rate is controlled within 5%, and the bending strength attenuation rate of a traditional non-filling or mechanical filling process is generally larger than 8%.

To provide a friction material that exhibits superior wear resistance and fade resistance under high load conditions, among other frictional performance characteristics. [Solution] A friction material comprising a fibrous base material, a friction modifier, and a binder, wherein the copper content is 0.5% by mass or less in terms of copper element, the fibrous base material contains steel fibers, the steel fiber content is more than 20% by mass and less than 50% by mass, and the friction modifier contains titanium carbide powder.

The application discloses a graphene-diamond composite coating and a preparation method and application thereof, and belongs to the technical field of materials. The graphene-diamond composite coating comprises a diamond coating and a graphene coating; graphene sp2 bond structure is covalently combined with diamond sp3 bond structure; and the graphene coating has a graphene structure with non-parallel growth mainly in a vertical direction. The graphene-diamond composite coating has small lattice mismatch between the diamond and the graphene, avoids volume expansion caused in a friction heat process, and has the advantages that the diamond coating can provide a support layer for the graphene, forms super-strong C-C covalent bonds at an interface, and significantly improves the adhesion strength of the graphene; the graphene can avoid brittle fracture of the diamond, and significantly improves the lubricating performance of the surface of the diamond coating. The composite coating has better wear resistance, a low friction coefficient and excellent oxidation resistance, and can remain stable under high-temperature and high-load working conditions, so that the service life and processing efficiency of wear-resistant parts are improved.

The present disclosure provides a logistics loading job control system that includes a server configured to mirror facility data of an actual logistics facility and a virtual environment (e.g., based on digital twin). The system further includes a package simulator configured to calculate cargo information corresponding to the loading area received from the server by a loading algorithm, and predict, for a current work target cargo container, a priority cargo information cargo container in an order in which loading efficiency is high, and a worker terminal configured to receive the priority cargo information cargo container from the current work target cargo container. And the worker terminal is configured to derive a scene branch type loading sequence and an expected loading rate through the packaging simulator based on the logistics loading condition in the loading area, and provide recommended cargo logic according to a derivation result, so as to assist the logistics loading operation of workers.

The utility model discloses a buckle type transformer fixing support convenient to install, and particularly relates to the technical field of transformer construction, the buckle type transformer fixing support convenient to install comprises a transverse steel channel, a supporting assembly and a hoop assembly, the supporting assembly and the hoop assembly are located on the upper side and the lower side of the two ends of the transverse steel channel respectively, and a pair of connecting assemblies is arranged above the supporting assembly. And crossed and staggered steel cable assemblies are arranged between the two diagonal supporting assemblies and the hoop assemblies. Through mutual cooperation of the supporting assemblies, the connecting assemblies, the hoop assemblies and the steel cable assemblies, installation and high-load bearing can be more convenient, specifically, on one hand, the supporting assembly on one side can be installed on the pair of connecting assemblies firstly, then the transverse steel channel is rotated to be parallel to the ground, the height does not need to be adjusted frequently, and therefore the installation efficiency is improved; on the other hand, the steel cable assemblies enable the supporting assemblies and the hoop assemblies which are opposite in the left-right direction to be connected in a crossed mode, and therefore the load capacity of the whole support is enhanced.

The utility model relates to the technical field of plastic plate processing, in particular to an automatic plastic plate laminating and pressing device which comprises a workbench, a supporting plate and a pressing mechanism are arranged on the workbench, a laminating mechanism and a fixing plate are arranged on the supporting plate, and the pressing mechanism comprises a U-shaped frame and a pressing roller. A driving mechanism and a heating mechanism are arranged between the pressing roller and the U-shaped frame, an elastic supporting mechanism is arranged between the top end of the U-shaped frame and the fixing plate, the elastic supporting mechanism is used for replacing a traditional mode of directly applying downward pressure, the direct stress condition of main driving components is reduced, and the pressing efficiency is improved. As a result, key mechanical parts do not bear a continuous high-load working state any more, so that the service life of the parts is effectively prolonged, the position change of the arc-shaped plate is controlled by utilizing the moving mechanism, the automatic process from laminating to laminating to stopping operation is realized, and the operation steps are simplified.

The utility model provides a main shaft sleeve for micro-deformation step quenching treatment, and belongs to the technical field of main shaft sleeves. Comprising a main shaft sleeve body which is subjected to micro-deformation step quenching treatment; the two sealing grooves are formed in the main shaft sleeve body and are distributed up and down; the magnetorheological fluid is arranged in the sealing groove in a filling manner; the two annular strips are arranged on the main shaft sleeve body and correspond to the sealing grooves, and the annular strips are hollow; and the electromagnetic coil is arranged in the annular strip and is used for generating a magnetic field to change the state of the magnetorheological fluid. By arranging the electromagnetic coil and the magnetorheological fluid, sealing is strengthened by applying a magnetic field during high-speed rotation and high-load work, lubricating oil can be effectively prevented from leaking, external pollutants can be effectively prevented from entering, and the problem that the sealing performance of a traditional sealing mode is reduced under severe working conditions is solved.

The utility model is suitable for the field of air supply check valves, and provides a one-way valve which comprises an upper valve body, a lower valve body, an air inlet pipe connector, a valve element, a valve needle and a locking nut. The sealing design is adopted, and powder or particles are effectively prevented from entering the rotating shaft or the lifting shaft. The protective measure can prolong the service life of the valve, reduce the maintenance frequency and ensure the continuous and stable operation of the valve. The problem that a traditional valve is prone to being stuck in the dust environment is solved, and therefore the working reliability of the valve is improved. When the valve works in a high-load or high-frequency operation environment, a smooth operation state can be kept, smooth flowing of gas or substances is ensured, and frequent maintenance is not needed. And internal parts of the valve are not easy to be polluted by dust, so that the maintenance complexity is reduced. A user can reduce the downtime, so that the production efficiency is improved, and the maintenance cost is saved.

This invention provides a multi-field coupled shear testing device, including a test host, a pressure chamber, a power distribution cabinet, and a water supply device. The test host is supported by a workbench. The confining pressure chamber, together with the vertical, horizontal, and longitudinal loading systems, applies a three-dimensional static load. Within the horizontal loading system, an impact transmission rod connects to a nitrogen high-pressure emission chamber to achieve impact loading. The sealed high-temperature chamber has a vacuum glass window on the outside, and the internal shear box chassis is raised and equipped with water channels. A membrane is used to wrap the specimen to prevent leakage. The vertical loading system has a built-in cooling device, and an acoustic emission probe is installed on the pressure rod to monitor damage in real time. This device achieves multi-field coupling of high temperature, high pressure, seepage, and impact through modular design, offering high loading accuracy and convenient operation. It solves the functional conflicts and monitoring lag problems of traditional equipment and is suitable for multi-field mechanical property testing of geotechnical materials.

The utility model discloses a pulley assembly of a sliding door and a high-load-bearing sliding door, and belongs to the technical field of doors and windows. The pulley shell is provided with a first track cavity and a second track cavity which are arranged in parallel; the number of the first shells is two, the two first shells are arranged in the first track cavity and the second track cavity respectively, the first shells are provided with first mounting cavities, at least two rotating shafts are arranged in the first mounting cavities, and the rotating shafts are arranged in the first mounting cavities at intervals; the second shell is rotatably arranged on the rotating shaft, a second mounting cavity is formed in the second shell, a first pulley and a second pulley are arranged in the second mounting cavity, the first pulley and the second pulley are arranged on the two opposite sides of the rotating shaft, and the first pulley and the second pulley can drive the second shell to rotate relative to the rotating shaft. The pulley assembly of the sliding door has the advantages of bearing high load, being stable in operation and reducing exposure of hardware.

The utility model discloses a rubber extruder feeding roller gear overload protection structure which comprises an inner gear ring, the inner gear ring is connected with a hole check ring, an outer gear ring and safety pins, the inner gear ring and the outer gear ring are connected through the hole check ring, the safety pins are arranged between the inner gear ring and the outer gear ring, and the number of the safety pins is two. The safety pin can be broken, the limiting mechanism is arranged at one end of the safety pin and used for preventing the safety pin from moving upwards in the axial direction to fall off, and the other end of the safety pin is limited through a stepped hole below the outer gear ring; the gear overload protection structure for the feeding roller of the rubber extruder solves the problems of overload of the feeding roller and breakage of a gear transmission system under the condition of high load or sudden increase of resistance in the prior art.

To provide an electroplated tool capable of making machining efficiency and tool life compatible with each other even under a high load machining condition.SOLUTION: An electroplated article includes a base metal 10 having a surface 10S to be fixed, and a superabrasive layer 20 formed on the surface 10S to be fixed, wherein the superabrasive layer 20 includes plating 24 and a plurality of superabrasive grains 22 fixed on the surface 10S to be fixed by the plating 24. In the electroplated tool, the super-abrasive grains 22 have a shape of any one of a truncated octahedron, a hexa-octahedron, and an octahedron, 50% or more of the super-abrasive grains 22 are fixed in a state where an edge portion E which is a corner or a ridge line protrudes toward a working surface, and a ratio of an occupied area of the super-abrasive grains 22 in the super-abrasive grain layer 20 when viewed from the working surface side exceeds 80%.SELECTED DRAWING: Figure 2

The application discloses a refrigerator and a noise evaluation method thereof. In the stable operation or high-load operation stage of the refrigerator, noise evaluation is performed on the overall operation of the refrigerator, the single operation of the compressor and the operation stage of the compressor and a single fan, respectively. The noise evaluation result of qualified or unqualified noise can be manually input, and the noise evaluation is more in line with the perception of the human ear. In the product design stage, the perceptual noise of the product under various operating conditions is identified, and then the operation condition of the product is evaluated according to the identified perceptual noise. If the product is unqualified, the noise problem position is determined, and the developer is helped to better design a new product.

The utility model discloses a plate-type tower plate with a convenient dismounting device, and relates to the field of plate-type towers of chemical production equipment. The screening tower plate mechanism is arranged in the tower body of the plate tower, and the screening tower plate mechanism is used for enabling gas to penetrate through the holes to be in uniform and efficient contact with liquid; according to the utility model, the four groups of first sliding plates and second sliding plates are driven to synchronously slide through the electric telescopic rod of the tower plate quick assembling and disassembling mechanism, and the inner supporting plate is driven to radially expand or contract, so that quick assembling and disassembling of the screening tower plate mechanism are realized; meanwhile, when the inner supporting plate is expanded, multipoint uniform supporting is formed through limiting cooperation of sliding grooves in the two sides of a straight sliding groove and sliding blocks, looseness or deformation caused by uneven stress on one side is avoided, reliability and impact resistance of mechanical locking are ensured, the disassembly and assembly efficiency and fixing stability are greatly improved, and the inner supporting plate is suitable for frequent maintenance or high-load industrial scenes.

The utility model provides a high-load bearing ring which comprises a tensioning wheel, a bearing outer ring and a bearing inner ring, a plurality of balls are arranged between the bearing outer ring and the bearing inner ring, a first blocking seat is fixed at the position of the tensioning wheel inner ring, a plurality of first threaded grooves are formed in one side of the tensioning wheel, a connecting ring plate is fixed on the bearing outer ring, and a plurality of second threaded grooves are formed in the connecting ring plate. A plurality of high-strength screws are arranged on one side of the connecting ring plate, the threaded ends of the high-strength screws penetrate through the connecting ring plate and are screwed into the first threaded grooves, the mounting column is fixed to the engine, a second threaded groove is formed in the mounting column, a second blocking seat is mounted on the mounting column, and the second blocking seat is fixed to the connecting ring plate. The engine tensioning wheel bearing ring solves the problems that most bearing rings of an existing engine tensioning wheel are directly embedded into the tensioning wheel, a large amount of time of workers needs to be spent during maintenance and replacement in the later period, and great inconvenience is caused.

The invention relates to the field of geological engineering, and discloses a tunnel surrounding rock crustal stress simulation system based on three-dimensional loading feedback control, and the system comprises a mechanical loading module which simulates a tunnel surrounding rock crustal stress field by assembling a steel plate structure, arranging a steel strand in a penetrating manner and applying a three-dimensional tensioning force through a hollow jack; the data acquisition module is used for acquiring stress and surrounding rock response parameters of the test piece in all directions in real time; the data modeling module is used for receiving the collected data and establishing a mathematical model between stress and response; the feedback control module is used for calculating an error and outputting a correction loading control instruction based on the mathematical model and the actual response value; and the visualization and interaction module is used for displaying a loading state, stress distribution and a response result, and providing an interface for a user to set loading parameters and regulate and control a loading process. According to the invention, a loading adjustment technology based on feedback control is adopted, the loading force can be adjusted in real time according to the response of the surrounding rock, the high fitting of the loading precision and the stress field in the experiment process is ensured, and the reliability and scientificity of experiment data are improved.

The utility model discloses a buckle and press machine mould base with self -lubricating function belongs to hydraulic mechanical manufacturing technical field, this buckle and press machine mould base with self -lubricating function, including a plurality of arc's mould petal, a plurality of arc's mould petal's top all respectively set up oil filler and positioning hole, every two arc's mould petal's outer wall all are installed with self -lubricating lining plate, and every two arc's mould petal between all respectively install two spring mounting seat and connecting petal. The utility model discloses through install self -lubricating lining plate, and self -lubricating lining plate provides lubricating function for mould seat friction surface continuously, stably under high load condition, reduces the wear and tear of part, and the characteristic of quick dismounting facilitates the maintenance and replacement lining plate of later period, reduces equipment maintenance cost, thereby significantly improves the operation efficiency of buckle and press machine, prolongs the overall service life, provides reliable lubricating guarantee for pipe fitting buckling operation.

This invention provides tranexamic acid liposomes, their preparation method, and applications, relating to the field of nanoliposome technology. This invention utilizes a simple process to prepare tranexamic acid liposomes by rationally combining the ratios of tranexamic acid, phospholipids, and cholesterol. This invention achieves high loading capacity and high loading rate for the active ingredient tranexamic acid, maintaining its stability for a long time under various temperature conditions. The tranexamic acid liposomes prepared by this invention have a particle size between 10-50 nm, enabling better penetration into the stratum corneum and targeting the basal layer of the skin, providing a long-lasting and stable effect. Compared to liposomes prepared by other processes, they exhibit excellent transdermal permeability and skin retention, which is more conducive to the efficacy of the active ingredient, significantly improving its bioavailability and resulting in a greater skin-lightening effect.

The application provides a coal-fired power plant SCR denitration system limited load output and peak capacity evaluation method and device, computing equipment and storage medium, relates to the coal-fired thermal power generating unit technical field. The method is based on online monitoring parameters and equipment design parameters, and the total amount of real-time removal of NO x X is calculated; combined with the key constraints including catalyst activity, ammonia supply capacity and reaction temperature, the operation status of the SCR denitration system is evaluated; the removal of NO x X of the three core constraints of catalyst activity, ammonia supply and reaction temperature is quantified respectively, and the total NO x X removal margin is obtained; based on the coupling relationship between the total NO x X removal margin and the load, the unit load margin and the peak capacity are calculated, the technical blank of denitration system performance evaluation under high load conditions is filled, and support is provided for safe and economic operation of the unit.

To provide a sealed rolling bearing that, with a simple and low-cost configuration, prevents a seal body from falling off the bearing or rotating with the bearing, even when used continuously in a severe environment such as a high temperature and a heavy load.SOLUTION: A sealed rolling bearing comprises an outer ring formed with an outer ring raceway surface, an inner ring formed with an inner ring raceway surface, a plurality of rolling elements, and a seal body that is attached to a seal holder fitting surface to seal the gap formed between the outer ring and the inner ring. The seal body comprises a core metal with an L-shaped cross section that has a cylindrical portion and a circular ring portion bent from the outer end of the cylindrical portion toward the inner ring, a seal fixing portion that is attached to the core metal and comes in close contact with the seal holder fitting surface, and a seal member that is made of an elastic material and has a seal lip portion. The seal holder fitting surface comprises a locking recess that has a bottom extending axially and an edge portion rising radially from the bottom.SELECTED DRAWING: Figure 3

A cold rolling condition is calculated which ensures rolling stability and does not impede productivity even when a high-load difficult-to-roll material is rolled. This cold rolling condition setting method sets, using a prediction model, conditions for cold rolling of a steel sheet having a total Si and Al content of 3.0% or more, said steel sheet having been sequentially hot-rolled, annealed, and pickled. The above prediction model is obtained by calculating the information of the rolling object and the annealing condition in the past actual operation performance. The prediction model learns, as explanatory variables, cold rolling conditions including the use amount of working rolls at a first rolling stand during cold rolling, and asymmetric components in the actual rolling performance of the first rolling stand as target variables, as well as acid pickling conditions and cold rolling conditions including the use amount of working rolls at the first rolling stand during cold rolling. The cold rolling condition setting method comprises: a step of predicting an asymmetric component in a first rolling stand by inputting annealing conditions and pickling conditions for a rolling target and set cold rolling conditions in the first rolling stand into the prediction model; and a step for changing the set cold rolling condition such that the predicted asymmetric component satisfies a predetermined condition.

This invention discloses a high-load two-stage separation treatment structure and a secondary sedimentation tank, relating to the field of wastewater treatment technology. The separation treatment structure includes a scraper, with a fixed rod installed at the end of the scraper. A support rod is fixedly connected to the fixed rod, and a mounting frame is hinged to the support rod. A scraper plate is fixedly connected to the mounting frame. A rotating shaft is fixedly connected to the scraper, and the fixed rod is rotatably connected to the rotating shaft. A self-locking unit is provided on the side of the scraper, which is used to cyclically switch between relative fixation and relative rotation between the scraper and the support rod. A flipping unit is also provided on the side of the scraper, which is used to drive the scraper to rotate 180° relative to the support rod. This invention can prevent scum from accumulating on the back surface of the scraper and can also make the scum cleaning more thorough, preventing scum from affecting the quality of the effluent.

The invention relates to the technical field of encasement systems, and provides an efficient and automatic bulk cargo container encasement system which can be matched with a standard container to form bulk cargo auxiliary encasement operation, the encasement efficiency is higher, the bulk cargo encasement posture can be adjusted relative to the position in the container, and the system is more practical. Relative switching operation among a plurality of containers is facilitated, the use flexibility is better, the bulk cargo lifting device comprises a plurality of bulk cargo lifting mechanisms, and further comprises a main body track mechanism and a middle support switching mechanism, the middle support switching mechanism comprises a crawler and a swivel frame, the swivel frame is installed on the crawler, a switching track is rotationally connected into the swivel frame, and the main body track mechanism is connected with the main body track mechanism. A first servo motor is installed at the top end of the swivel frame and used for switching rotation adjustment of the track, a control motor is installed on the crawler and used for controlling rotation of the swivel frame relative to the crawler, and the main body track mechanism comprises an output telescopic frame and two input telescopic frames. The output telescopic frame and the two input telescopic frames are all rotationally connected with the swivel frame.

The utility model discloses a computer hardware reinforcing device's board layer structure, including board layer, support tube, through-hole, side plate and fan, the four corners of board layer's lower surface all are provided with support tube, the both sides of board layer's upper surface all are provided with a plurality of through-hole, the both sides of board layer's upper surface all are provided with two side plate from front to back one side. According to the plate layer structure of the computer hardware reinforcing device, through cooperation of the plate layer, the supporting pipes, the through holes, the side plates, the fans and the supporting assemblies, when the fans are started to enable the through holes to generate suction gas flow to dissipate heat of a hard disk, a certain gap distance can be reserved between the hard disk and the plate layer through the supporting cylinders and the soft heads, and airflow can conveniently and efficiently act on the surface of the hard disk; the heat dissipation effect of the hard disk can be improved by matching with the excellent heat conduction effect of the soft head and the supporting cylinder, in addition, the flow of airflow entering the air inlet of the fan is increased, the hard disk is not prone to being in a high-load operation state for a long time, and long-term proper use of the hard disk is facilitated.

This utility model relates to a nut anti-loosening structure for a needle roller bearing. The nut anti-loosening structure includes a needle roller bearing, a support shaft, an anti-loosening washer, and a nut. One end of the support shaft is interference-fitted with the inner ring of the needle roller bearing, and the other end is adapted to the anti-loosening washer. The anti-loosening washer has a D-shaped through hole, through which it is fitted onto the support shaft. The nut is fitted onto the support shaft and abuts against the anti-loosening washer. The solution provided in this application can form a non-circular fit between the D-shaped anti-loosening washer and the support shaft, and replaces "friction anti-loosening" with "mechanical hard limiting," eliminating the need for material deformation or chemical anti-loosening agents. It is particularly suitable for high-load, high-speed, frequent start-stop, or drastic temperature changes, effectively reducing equipment failures caused by nut loosening, improving production efficiency, and is simple in structure, requires no frequent maintenance, is environmentally friendly, and has low cost.

A small-radius curve joint insulation device with guard rails comprises a spacer block lapped between two butt-joint steel rail interfaces, an insulation inner clamping plate is arranged between the spacer block and a steel rail, an insulation outer clamping plate opposite to the insulation inner clamping plate is arranged on the outer side of the steel rail, and a spacer piece is arranged between the butt-joint steel rail interfaces; the I-shaped section insulation is combined with the spacer block and the groove-shaped insulation, so that the problems of pulling deformation and insulation failure caused by uneven stress of double-section insulation are solved; the insulation assembly can be better attached to a track structure, stress is effectively dispersed, the impact resistance is improved, long-term stable operation is ensured, and the requirements of high-load and high-frequency train operation are met. According to the device, the mechanical strength of the insulation assembly is improved, the problems of deformation and aging caused by long-term use are reduced, the service life of equipment is prolonged, the stability and reliability of a track circuit are further improved, and safe and efficient operation of railway transportation is ensured.

This utility model relates to the field of CNC grinding machine tool technology, specifically to an automatic loading and unloading mechanism for a CNC grinding machine tool. The mechanism includes: a lifting mechanism, primarily used for placing materials; two lifting mechanisms are provided and symmetrically arranged; each lifting mechanism includes a support frame, on which two slide rails are symmetrically arranged, and sliders are slidably mounted on each slide rail, with the two sliders connected to a support table; and a positioning mechanism, primarily used for positioning materials. The positioning mechanism is connected to the two lifting mechanisms at both ends and includes a long plate. A lead screw is provided on the side of the long plate away from the lifting mechanism, and sliders are helically connected to the lead screw. This utility model has the advantages of simple structure, reasonable design, high degree of automation, uniform positioning accuracy, and high loading and unloading efficiency, and is worthy of widespread promotion and application.