51 results about "Punching shear" patented technology

The utility model provides a numerical control punching and shearing machine. The cutting table is fixedly installed in the middle of one side of the top of the workbench. The cutting table comprises a fixing block, an opening groove and scale values. The two fixing blocks are fixedly installed on the two sides of the top of the workbench respectively, the two ends of the limiting rod are fixedly connected to the surfaces of the two fixing blocks respectively, a servo motor is fixedly installed on the surface of one fixing block, and an output shaft of the servo motor is fixedly connected with a threaded rod. According to the numerical control punching and shearing machine, the bottom of the baffle is connected with the fixing block through the sliding block, a user holds the pull rod to turn over the rotating plate and the baffle through the rotating shaft, the baffle pulls the supporting device to turn over, a bus cut in the supporting device is taken out, and the device is simple in structure, high in practicability and high in practicability. And an operator can conveniently, quickly and conveniently go to the cut bus, the working safety of the operator is protected, and the practicability and the safety of the device are improved.

The invention discloses a continuous stamping and shearing mechanism for aluminum materials. The continuous stamping and shearing mechanism for the aluminum materials comprises a punch, a lower die, a top bottom, an ejector pin and an elastic part, wherein the lower die corresponds to the punch and is provided with a knife edge; the top bottom is movably matched with the interior of the knife edge of the lower die; the punch is in zero clearance fit with the inner wall of the knife edge of the lower die; the punching shearing depth of the punch in a die closing state is set to be the thickness of the aluminum material + 0.05 mm, and the top and the bottom synchronously descend by the same height along with the punch. According to the aluminum material continuous stamping and shearing mechanism and the stamping and shearing process, through zero-clearance fit between a punch and a lower die, precise linkage between a top and a bottom and an elastic piece and stable guiding of multiple layers of die plates, a rigid physical platform capable of being precisely regulated and controlled is provided for high-precision shearing; a standardized process of positioning, zero-clearance semi-shearing, reset keeping, continuous feeding and stable discharging is executed, and the structural advantage is converted into stable and repeatable process output.

The invention relates to the technical field of punching and shearing mechanisms, and discloses a punching and shearing device with a deburring function for scraper production, which comprises a platen, a main oil cylinder is arranged on the upper surface of a portal frame, an upper punching part is arranged at the driving end of the main oil cylinder, a lower pressure-bearing part is arranged at the bottom of the portal frame, and a pushing assembly is arranged on the side edge of the portal frame. The end, extending into the portal frame, of the pushing assembly is provided with a grinding assembly, the pushing assembly comprises a pushing rod movably inserted into the side edge of the portal frame, an arc-shaped groove is formed in the outer surface of the ratchet wheel in a penetrating mode, the end of the pushing rod is slidably clamped into the arc-shaped groove, and a shaft rod is fixedly inserted into the middle of the ratchet wheel. Through the meshing transmission design of the pawl strip and the ratchet wheel, when an upper stamping part is reset, the push rod is used for pushing the grinding structure to move, the grinding space is adjusted in a self-adaptive mode under the action of centrifugal force, the shearing face is ground, and the shearing face is comprehensively covered and ground in cooperation with axial movement of the push rod; the effects of removing burrs and flattening the section are achieved.

The application discloses a bearing capacity calculation method and device of a pile structure with a bearing platform and a storage medium, and solves the problem that the design method is relatively complex and the calculation result is not accurate in the prior art. The calculation method comprises the following steps: obtaining size parameters and adjacent soil parameters of a bearing pile, a bearing platform and a foundation pile in the pile structure with the bearing platform; inputting the size parameters and the adjacent soil parameters into a bearing capacity calculation model to obtain bearing capacity data output by the bearing capacity calculation model; and the bearing capacity data at least comprises: a pushing force of a rear soil body on the bearing pile, a counterforce of the bearing platform, an eccentricity of the counterforce of the bearing platform, a stress of the counterforce of the bearing platform and an axial pressure at a bottom end of the bearing pile, which are obtained by solving a soil pressure analysis model based on the bearing pile; and a positive section bending moment of the bearing platform, a downward punching shear damage of the bearing pile on the bearing platform and an upward punching shear damage of a rear row of foundation piles on the bearing platform, which are obtained by solving an asymmetric force analysis model based on the bearing platform.

The utility model discloses a water-cooled hydraulic punching and shearing machine, which belongs to the technical field of hydraulic punching and shearing machines and comprises a punching and shearing machine body, an oil storage tank and a water cooling system, the oil storage tank and the water cooling system are arranged in the punching and shearing machine body, the oil storage tank is connected with a pipeline of the water cooling system, an air pump is mounted on the punching and shearing machine body, and an air outlet of the air pump is connected with an air inlet pipe. The water cooling system comprises a water inlet pipe, a shell with an inner cavity structure is installed on the water inlet pipe and penetrates through the water inlet pipe, the diameter of the inner wall of the shell is larger than that of the inner wall of the water inlet pipe, one end of the air inlet pipe is connected with the shell, an air outlet is formed in the shell, and a spring is connected to the inner surface of the top wall of the shell. And one end of the spring is connected with a water blocking ball. When the water cooling system leaks cooling water due to factors such as aging of parts, the water pump can be timely prevented from continuously pumping water into the water cooling system, and continuous leakage of the cooling water is avoided.

The utility model relates to punching and shearing machine technical field discloses a punching and shearing mechanism of steel sheet mesh punching and shearing machine, including punching and shearing frame, the inner wall sliding connection of punching and shearing frame has the pressing plate, the top fixed connection of pressing plate has the negative pressure pipe, the inside fixed connection of pressing plate has the suction pipe, one side surface fixed connection of punching and shearing frame has the collection box, one end fixed connection of collection box has the suction pipe. The utility model has the following advantages and effect: the negative pressure pipe inside produces the negative pressure, shunts to the suction pipe, prevents the splashing of debris under the action of suction, and debris is sucked into the suction pipe, thereby enters the negative pressure pipe, and the corrugated expansion bend pipe can follow the lifting of pressing plate and expand and contract, and the flexibility is stronger and can present multiple forms, and the debris is filtered by the filter screen after entering the collection box, and the debris falls in the collection net box and is collected, the filter screen can be disassembled and cleaned, and the debris is collected conveniently during the punching and shearing process.

This invention provides a reinforced, irregularly shaped cross-section steel-concrete composite column base joint, comprising an irregularly shaped cross-section steel-concrete composite column. The lower perimeter of the irregularly shaped cross-section steel-concrete composite column is surrounded by a reinforcing steel reinforcement cage, which includes upward and downward reinforcing bars embedded in the foundation. By adding a reinforcing steel reinforcement cage around the irregularly shaped cross-section steel-concrete composite column, and embedding the upward and downward reinforcing bars of the cage into the foundation, this invention effectively enhances the connection between the column base joint and the surrounding foundation concrete, thereby improving the punching shear resistance and seismic resistance of the column base joint, and ultimately reducing the embedment depth of the embedded column base.

The application discloses a modular slab-column structure system, which comprises: a plurality of support columns extending along a first direction; and a floor slab installed on one side of the plurality of support columns in the first direction, wherein the floor slab comprises a base plate and a plurality of reinforcing plates, the base plate is provided with a plurality of notches at edges thereof, the plurality of notches and the plurality of support columns are in one-to-one correspondence, the plurality of reinforcing plates are respectively arranged in the plurality of notches and connected with the base plate, and the structural strength of the reinforcing plates is higher than that of the base plate, and the floor slab is connected with the support columns through the reinforcing plates. According to the modular slab-column structure system, the part of the floor slab connected with the support columns is replaced by the reinforcing plates with higher strength, so that the connection part of the floor slab and the support columns can bear greater shearing force, the punching shear resistance of the slab-column structure can be improved, the safety and reliability of the slab-column structure can be improved, and the safety hidden danger of the modular slab-column structure system can be reduced.

This invention discloses a method for reinforcing existing reinforced concrete floor slabs for eVTOL (Emergency Virtual Transport Operator) landing pads against punching shear, belonging to the field of civil engineering reinforcement technology. The method includes: first, calculating the equivalent dynamic impact load based on eVTOL takeoff and landing parameters and the existing floor slab condition; second, using a modified punching shear failure angle model based on stiffness gradient, sequentially calculating the modified punching shear angle, quantitatively designing the thickness of the upper ultra-high performance concrete (UHPC) layer and the amount of the lower fiber-reinforced polymer (FRP) layer and the anti-peeling anchor density; finally, implementing a composite reinforcement construction method of "upper layer and lower layer" according to design specifications. This method significantly improves the punching shear resistance of the existing floor slab by introducing a high-stiffness UHPC layer in the upper part of the existing floor slab to expand the punching shear cone angle, and by setting an FRP layer and anti-peeling anchors in the lower part to limit crack propagation. Through the synergistic effect of the upper and lower layers, it achieves rapid reinforcement and renovation of low-altitude aircraft landing pads.

The invention provides an electronic plug-in and a crimping terminal thereof, the crimping terminal comprises two opposite surfaces, a crimping part, a base part and a buffer structure, the crimping part and the base part are respectively located at two opposite ends of the crimping terminal, the buffer structure comprises at least two connecting parts which are spaced, each connecting part comprises at least two connecting arms which are connected, and the connecting arms are connected with the crimping part. Each connecting arm is formed by linearly extending, the connecting arms of the two connecting parts surround to form a closed polygonal hole penetrating through the two surfaces of the crimping terminal, a buffer structure is formed through simple appearance design, and the crimping terminal can be manufactured only through punching shear processing, so that the manufacturing difficulty and the production cost of the crimping terminal are greatly reduced, and the production efficiency of the crimping terminal is improved. And the finished product size of the crimping terminal and the deformation degree during buffering are easy to control.

The utility model discloses a novel multifunctional punching and shearing mechanism, including punching and shearing mechanism base, the top of punching and shearing mechanism base is fixedly arranged with punching and shearing mechanism main part, both sides of punching and shearing mechanism main part top are fixedly arranged with the ring bolt, the middle part of punching and shearing mechanism main part surface is equipped with two board placement, one side of punching and shearing mechanism main part is equipped with initiative structure, one end of initiative structure is equipped with shearing structure, one side of shearing structure is equipped with the stamping structure, the utility model relates to a novel multifunctional punching and shearing mechanism, distinguish from most punching and shearing machine on market, have extensive adaptability and flexibility, and its shearing module and stamping module are completely independent and can be operated alone, and the user can flexibly select to start the shearing module, the stamping module according to actual working condition and processing demand, or make both work together, can adapt to different production tasks and processing scene.

The application provides a peripheral corbel prestressed cable type self-resetting special-shaped cross-section embedded column foot joint, which comprises a special-shaped cross-section steel pipe concrete column, a corbel is arranged at the outer extension end of the lower part of the special-shaped cross-section steel pipe concrete column, a cable is arranged on the corbel through prestress, and the corbel and the cable are both in the foundation and used for enhancing the connecting capacity of the column foot joint. The application can effectively enhance the connecting capacity of the column foot joint and the surrounding foundation concrete through the peripheral corbel and the cable, thereby improving the punching shear resistance and the anti-seismic capacity of the column foot joint, achieving the purpose of reducing the embedding depth of the embedded column foot, and the column foot joint has a certain self-resetting capacity due to the prestress of the cable.

This utility model relates to the field of silicon steel sheet processing technology, and discloses a punching and shearing device for transformer core silicon steel sheets. It includes a gantry frame mounted above a punching and shearing table, with a punching and shearing machine movably fitted inside the gantry frame; a first pressure roller rotatably connected to the punching and shearing table, located on the side of the punching and shearing machine near the first conveyor belt; a first drive assembly mounted on the punching and shearing table, the drive end of which is connected to the first pressure roller, allowing for an adjustable distance between the first pressure roller and the punching and shearing table; a second pressure roller rotatably connected to a guide table, positioned on the top surface of the guide table near the punching and shearing table, with an elastic tendency towards the top surface of the guide table; and a third pressure roller rotatably connected to the guide table, positioned on the top surface of the guide table near the second conveyor belt, also with an elastic tendency towards the top surface of the guide table. This device can improve the punching and shearing quality of silicon steel sheets and increase production efficiency.

A cup cover forming and ultrasonic heat sealing all-in-one machine comprises a plate conveying mechanism, a preheating mechanism, a forming mechanism, a punching mechanism and a punching and shearing mechanism. The preheating mechanism, the forming mechanism, the punching mechanism and the punching and shearing mechanism are sequentially distributed in the plate conveying direction. The cup cover forming and ultrasonic heat sealing all-in-one machine is characterized by further comprising an ultrasonic heat sealing mechanism, a filter screen placing mechanism and a filter screen transferring mechanism. Compared with the prior art, the ultrasonic heat sealing integrated machine has the beneficial effects that the filter screen transferring mechanism, the ultrasonic heat sealing mechanism and the filter screen placing mechanism are additionally arranged and are matched with one another, so that positioning placing, transferring and heat sealing of a filter screen can be completed, and the ultrasonic heat sealing integrated machine for forming the cup cover can complete forming of the cup cover and mounting of the filter screen at a time; therefore, the occupied space and the needed manpower are greatly reduced, the automation degree is greatly improved, and the sanitary condition of the cup cover is effectively guaranteed.

The invention relates to the technical field of industrial automation control, and discloses a complete switch equipment-oriented copper bar flexible processing production cooperative control method, which comprises the following steps of: analyzing a three-dimensional design model, and establishing a discretization infinitesimal model along the longitudinal direction of a copper bar; collecting punching shear servo data to calculate a global material hardening index, and reconstructing a discrete residual stress field; performing task clustering based on the rehearsal trajectory, and calculating a cumulative inertial load factor in circulation; the optimal mechanical clamping point deviating from the geometric center is calculated according to the discrete residual stress field, and dynamic grabbing is executed; and in combination with the hardening index and the inertia load factor, calculating a bending pressing stroke containing double gain correction and executing machining. According to the method, by means of discrete stress field reconstruction and inertial load calculation, dynamic drift correction and multi-dimensional bending self-adaptive compensation of the grabbing point are achieved, and the machining precision can be improved without trial bending.

The invention discloses a non-drilling-through type shearing resisting method and structure for fixing a profiled steel sheet of a steel-concrete structure, and the method comprises the following steps: a locking hole which does not penetrate through a steel base material is machined in the profiled steel sheet and the steel base material, and the locking hole is provided with an insertion section, an expanded base section and an extension section which are connected in sequence; a shear-resistant expanded-base anchor bolt is inserted into the locking hole to the bottom; and the locking nut is rotated to realize that the profiled steel sheet and the steel base material are pressed and fixed while the expanded-base petals are opened. According to the invention, a stress mode is converted into mechanical interlocking of'the locking hole and the anti-shearing expanded-base anchor bolt 'from friction holding of a shoot nail, a force value is increased by one order of magnitude, a damage mode is designed as that the expanded-base petals, the anti-shearing expanded-base anchor bolt and a steel base material almost reach the limit at the same time, and the material strength utilization rate and the safety are extremely high. The non-drilling-through type shearing resisting method can be matched with automatic equipment to achieve automatic machining.

The present application relates to bus duct processing technical field, disclose a kind of bus duct connecting row automatic punching shearing processing machine, including machine body, the machine body front and rear sides are connected and are provided with pressing assembly, the machine body front end is connected and is provided with shearing assembly, the machine body top end is connected and is provided with connecting plate one, the connecting plate one top end is connected and is provided with electric guide rail one, the electric guide rail one mobile end is connected and is provided with mobile kit, the mobile kit is slidably arranged in connecting plate one top end, and the mobile kit bottom end is connected with connecting plate one. The present application is controlled by the cooperation of transport assembly, electric guide rail, multistage hydraulic system and external controller, realizes the automatic feeding of connecting row, fixed-length shearing, accurate punching and automatic polishing, greatly reduces manual intervention, improves production efficiency, adopts multistage hydraulic assembly to drive multiple concentric punching head, can be activated different levels punch according to the required aperture, without frequent replacement of mould.

The utility model relates to the technology of bus production equipment, and discloses a bus punching and shearing machine which comprises a rack, a punching and shearing assembly arranged on the rack and a clamping assembly arranged on the rack, the punching and shearing assembly is provided with a plurality of punching die heads, and the multiple punching die heads are sequentially arranged in a single row in the width direction of the rack; the two clamping assemblies are located on the two sides of the punching and shearing assembly respectively, each clamping assembly comprises a clamping frame, a transmission structure arranged on the clamping frame, a servo motor arranged on the clamping frame, a first clamping jaw and a second clamping jaw, the first clamping jaw and the second clamping jaw are arranged on the clamping frame, and the first clamping jaw and the second clamping jaw are connected to the transmission structure. The servo motor is used for driving the transmission structure to move so that the transmission structure can drive the first clamping jaw and the second clamping jaw to move in the direction close to or away from each other. The overall size of the bus punching and shearing machine is reduced, and the production cost of the bus punching and shearing machine is reduced; and the occurrence of clamping marks and clamping damages on the bus is avoided, so that the production quality of the bus is ensured, and the production efficiency of the bus is improved.

The present invention discloses a punching and shearing machine for office desk tops, specifically relating to the technical field of metal combination processing. The machine comprises a socket frame, a punching and shearing electric cylinder, a punching and shearing rod, and a multi-faceted synchronous punching and shearing and bending combination mechanism. The multi-faceted synchronous punching and shearing and bending combination mechanism comprises a punching and shearing pressure sensor, a pressure plate, a pressure ring, a socket plate, a linkage electric cylinder, a bending pressure sensor, a pressure sleeve ring, multiple pressure columns, a bending plate, and multiple corner punching shears. The machine also comprises a multi-faceted lateral combination bending mechanism and a multi-faceted synchronous combination punching assembly. The present invention utilizes the multi-faceted synchronous punching and shearing and bending combination mechanism to achieve synchronous punching and shearing of multiple corner positions of a metal sheet and synchronous vertical bending of multiple surfaces of the metal sheet. This significantly improves the efficiency of the punching and shearing combination metal processing, thereby resolving the problem of a significant decrease in the efficiency of the punching and shearing combination metal processing.

The utility model discloses a side punching window punch for product processing, which comprises a base and a punching and shearing mechanism arranged on the base, the punching and shearing mechanism comprises an edge pedestal and an object placing seat arranged on the edge pedestal, the edge pedestal is fixed on the upper end face of the base, a motor is fixed on one end face of the edge pedestal, and the object placing seat is arranged on the edge pedestal. An inclined plane is arranged on the edge pedestal, a screw rod and a limiting rod which are parallel to each other are arranged on the edge pedestal, the screw rod is connected with an output shaft of the motor, the limiting rod is fixed on the edge pedestal, one end of the object placing seat is installed on the screw rod in a threaded mode, and the other end of the object placing seat is installed on the limiting rod in a sliding mode. According to the side punching window punch for product machining, the punch body is punched into the product to be punched and sheared from an inclined angle, so that sharp window hole edges cannot be generated after the punch body punches and shears the product, the risk that workers are scratched during follow-up assembly is avoided, secondary grinding is not needed, and cost is reduced.

1. Name of the product in this design: Copper busbar punching and shearing machine. 2. Application of this design: For punching and shearing of copper and aluminum busbars, including processes such as punching, shearing, chamfering, and embossing. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

The utility model discloses a full -automatic steel office furniture plate punching -shearing machine, including punch -shearing machine main part, bottom plate and support leg, the bottom fixedly connected with bottom plate of punch -shearing machine main part, the right side fixedly connected with two support legs at bottom plate top, the utility model discloses the cooperation of setting punch -shearing machine main part, bottom plate, support leg, control panel, connecting plate, through groove, moving plate, connecting groove, brush plate, half gear, rack, top plate, motor, stabilizer, spring, sliding slot, baffle, accommodating block, accommodating groove, pressure spring, fixed link, fixed hole, pull rod and sleeve rod has solved the existing equipment often does not have automatic cleaning mechanism, leading to the surface of plate material easy to remain dust, oil stain and metal scrapes and so on impurity, these pollutants not only will reduce processing quality, cause scratch or indentation and so on defects, also can accelerate the wear and tear of mould, increase maintenance cost's problem.

The utility model relates to the technical fields of bus punching and shearing machine, propose a kind of full servo numerical control bus punching and shearing machine, including conveying platform and feeding mechanism, and feeding mechanism includes support plate, two groups of feeding members are arranged on support plate, and feeding member includes support table, and support table is slidably connected with sliding block, and first motor is fixed on sliding block, and feeding wheel is coaxially fixed on the output shaft of first motor, contact block is also fixed on support table, contact block is fixed with touch switch, and adjusting spring is connected between contact block and sliding block.The utility model has the beneficial effects that: driving piece drives a pair of feeding member and bus copper bar two sides and abuts, at this time, feeding wheel is provided with force by the elastic force of adjusting spring to bus copper bar, to adjust the compression amount of adjusting spring with adjusting piece, ensure that bus copper bar is not deformed by excessive pressure in conveying process, and enough friction can also be guaranteed to realize stable conveying.

The utility model discloses a kind of multi-process engineering moulds, including upper die holder and lower die holder, located on the upper die holder is provided with stripping plate, located on the lower die holder is provided with concave die plate, stripping plate corresponds with concave die plate, at least two groups of parallel punching shear cavities are opened on the concave die plate, the upper die holder at punching shear cavity corresponding place is provided with punching shear block, and the end of steel bar is trimmed and formed by punching shear block and punching shear cavity cooperation, the punching shear cavity is provided with the steel bar placement cavity extending outward, punching is provided at the end of steel bar placement cavity.The utility model is changed by using positioning plate, and different quick-release positioning blocks are made on the positioning plate according to product size to complete the stamping of different size products, two-end head stamping is used in stamping process, and mold cost is saved.

The utility model relates to the technical field of bus bar processing, and provides a tapping punching and shearing machine which comprises a base, a portal frame is arranged on the base, the tapping punching and shearing machine further comprises a translation assembly, a punching assembly, a tapping assembly and a shearing assembly, the translation assembly is arranged on the base below the portal frame in a sliding mode, the sliding direction of the translation assembly is perpendicular to the feeding direction of materials, and the translation assembly is provided with a punching assembly, a tapping assembly and a shearing assembly. The downward pressing assembly is arranged on the portal frame and used for downward pressing the punching assembly, the tapping assembly and the shearing assembly; the feeding plate is arranged on the base on the rear side of the translation assembly in an up-down sliding mode through a floating assembly, and a front clamping assembly is arranged on the feeding plate in a sliding mode; and the discharging table is arranged on the base on the front side of the translation assembly, and the rear clamping assembly is arranged on the base on one side of the discharging table in a sliding mode. According to the utility model, the bus bar can be punched, tapped and sheared on the same equipment, meanwhile, the waste of materials in the shearing process can be avoided, and the processing efficiency and economical efficiency are improved.

The utility model discloses a hydraulic punching and shearing machine self-adaptive to material thickness, and relates to the technical field of hydraulic punching and shearing machines. According to the hydraulic punching and shearing machine self-adaptive to the material thickness, through mutual cooperation of the positioning plate and the movable plate, shaking and deviation during punching are effectively eliminated, it is ensured that punching is accurate, the machining precision is remarkably improved, the punching and shearing head is designed to be detachable, maintenance and replacement are more convenient, the downtime is greatly shortened, and the machining precision is continuously and stably guaranteed. The punching cylinder quickly drives the punching and shearing action, and the self-adaptive adjusting mechanism can clamp materials by virtue of the cooperative operation of the clamp and the clamp cylinder, and meanwhile, a movable clamping plate can adjust the height of the punch seat in a linkage manner, and the punching and shearing stroke is optimized according to the thickness of the materials, so that the punching and shearing machine can flexibly cope with the materials with different thicknesses and can automatically reduce the height of the punch seat for thin materials; the punching force is precisely controlled, and the size precision and the surface quality are guaranteed; for thick materials, the height of the punch seat is reasonably set, so that the punch accumulates enough energy and travel.

A method for predicting the failure mode of a slab-column joint. The purpose of this invention is to provide a method for predicting the failure mode of a slab-column joint. This method considers comprehensive factors and is simple to apply. Only the relevant parameters of the slab-column joint need to be input to predict the failure mode, thus overcoming the shortcomings of existing methods. Method: Construct a test database for slab-column joints and determine the strain ε of the tensile longitudinal reinforcement in the slab. s Yield strain ε of longitudinal tensile reinforcement in plate y The ratio is used as a quantitative index to distinguish the failure mode of the plate-column joint; a calculation model for the discriminant characteristic parameter φ of the plate-column joint failure mode is established; and a discrimination criterion for the plate-column joint failure mode is established. Only the relevant parameters of the plate-column joint need to be input, without needing known experimental values ​​of the plate-column joint bearing capacity, to predict the failure mode of the plate-column joint, thus overcoming the shortcomings of existing prediction methods. Furthermore, compared with existing plate-column joint mode prediction methods, the method of this invention can more accurately predict the failure modes of the plate-column joint, including punching shear failure, flexural punching failure, and bending failure.

The application provides a one-die multi-piece punch-shear machine, which comprises a hydraulic driving mechanism, a punch-shear assembly and a material distribution assembly. The hydraulic driving mechanism comprises a hydraulic cylinder and a rack. The punch-shear assembly comprises an upper die assembly and a lower die assembly. The upper die assembly comprises an upper die plate and a plurality of female dies. The upper die plate is connected with the end of a piston rod, and the plurality of female dies are installed on the upper die plate. The lower die assembly comprises a lower die plate and a plurality of male dies. The lower die plate is installed on the rack, and the plurality of male dies are installed on the lower die plate. The plurality of male dies are arranged in one-to-one correspondence with the plurality of female dies. The center of each male die is provided with a discharging hole, and the lower die plate is provided with a plurality of discharging ports which are communicated with the discharging holes. The material distribution assembly comprises a distribution box which is located below the rack. The distribution box is divided into a plurality of material bins. Each material bin is communicated with a corresponding discharging port.

The utility model discloses a feeding mechanism of an angle steel punching and shearing machine, which relates to the technical field of feeding mechanisms and comprises a mechanism body, and a collecting tank is arranged on the upper side of the mechanism body. The top of the collecting tank is fixedly connected with two sets of symmetrically-arranged first vertical plates, a rotating rod is rotationally connected between the two sets of first vertical plates, the outer portion of the rotating rod is fixedly connected with a hexagonal prism and first gears, the first gears are installed on the two sides of the hexagonal prism, and a transmission mechanism is installed between the two sets of first gears. Second vertical plates are fixedly connected to the tops of the first vertical plates, and a limiting mechanism is slidably connected between the two second vertical plates. According to the device, the purpose that all hexagonal prisms rotate in the same direction can be achieved only through operation of one set of driving motors, angle steel can be easily cleaned, cleanliness of a subsequent machining machine is conveniently guaranteed, meanwhile, stable feeding of the angle steel can be guaranteed through limiting of the partition plate in the angle steel pushing process, manual adjustment of workers is not needed, and the labor intensity of workers is lowered. And the feeding efficiency of the angle steel is greatly improved.

The utility model relates to the technical field of building reinforcing structures, in particular to a reinforcing structure of a slab-column node in a flat slab, which comprises a floor slab, a column cap fixedly connected to the bottom of the floor slab, a column body fixedly connected to the bottom of the column cap, an angle steel frame sleeved on the surface of the column cap, a force transmission steel plate arranged at the bottom of the angle steel frame, and a steel plate arranged on the surface of the force transmission steel plate. Force transmission angle steel is arranged at the bottom of the force transmission steel plate, angle steel supporting rods are arranged at the four corners of the column body, hoop plates are fixedly connected to the surfaces of the angle steel supporting rods, and structural adhesive is arranged between the angle steel frame and a floor slab. The structure is not only suitable for common structure reinforcing engineering, but also capable of meeting the requirement of civil air defense engineering for time urgency in peacetime and wartime function conversion, the structure does not need to be unloaded in advance when reinforcing is carried out, construction is simplified, construction efficiency is improved, punching bearing capacity at the position of the column cap can be improved, and construction cost is reduced. And the overall bearing capacity of the structure is also remarkably improved.