80results about How to "Increased bending stiffness" patented technology

The invention discloses a construction method for excavating an upside-down well wall of a deep foundation pit under an eccentric compression working condition. The construction method is suitable for an asymmetric load scene that the soil covering height of one side of a vertical shaft is obviously larger than that of the other side of the vertical shaft. The method comprises the steps that firstly, grouting is conducted on the periphery of the shaft wall of a vertical shaft under the current ground, and a soil body reinforcing area is formed; then, a mouth locking ring beam is constructed at a shaft mouth of the vertical shaft, an upper structure comprising a retaining wall, a reverse pressing plate, a retaining wall ring beam and a plate support is upwards constructed on the mouth locking ring beam, and soil covering side earthwork is synchronously backfilled to the level ground elevation in the construction process; next, an upside-down well wall method is adopted for subsection downward excavation, an annular arch frame, angle braces and anchor rod supports are constructed after each section is excavated, and an upper ring beam and a lower ring beam are arranged at the horsehead position and connected with the adjacent arch frames through vertical supports; and finally, concrete bottom sealing is conducted on the shaft completion face. The anti-overturning moment is formed through the reverse pressing plate and synchronous backfilling, and the problem of well wall instability caused by eccentric loads is effectively solved in combination with a multi-stage supporting system.

The utility model discloses a gallium nitride output essential safety type power supply, including power supply body and bottom mounting plate, the casing bottom of power supply body is fixed with bottom mounting plate, still include guide and scatter mechanism, the guide and scatter mechanism includes top and exposes the groove, heat conduction silicon pad, double -faced wrong groove board, edge and exposes the groove, gantry clamping plate, lead touch piece, edge fin, bottom link and horn, through setting up guide and scatter mechanism and carry out heat dissipation improvement to the essential safety type power supply of gallium nitride semiconductor technology's application, and the top and exposes the groove of guide and scatter mechanism cooperation deep groove reduces the casing thickness of power supply body, and then combines heat conduction silicon pad and double -faced wrong groove board, forms the efficient heat conduction path and conducts heat dissipation outward, and simultaneously, the gantry clamping plate collocates lead touch piece and edge fin, constructs the multi -point three -dimensional heat dissipation surface of top surface and side surface formula, solves the casing heat dissipation blind area problem of power supply body, realizes the heat of power supply body and multi -point dispersion export.

A wind turbine blade made of basalt carbon fiber composite variable density material combination, including at least one blade unit assembled along the length direction of the blade, the density gradient increases from the blade tip to the blade root through the gradient distribution of material density and / or the gradient distribution of hollow structure, and adjacent blade units are detachably connected through non-threaded connection structure. The modular design of the blade solves the problem of land transportation of oversized blades, and the non-threaded connection (hand disassembly) improves the efficiency of on-site installation and eliminates the risk of thread loosening. Lightweight blade tip reduces starting torque, facilitates handling and assembly, and improves wind speed and power generation efficiency.

The utility model discloses a hollow arch board for building construction, including board main body, and board main body is integrally extruded by light material, the board main body is as a whole arch structure, and is equipped with arch toe on both sides, the board main body is hollow structure, and is equipped with a plurality of webs inside, and the web divides the board main body inside into multiple continuous rectangular, triangle or trapezoidal hollow cavities, the utility model discloses integrally extruded by light material such as PVC or aluminum alloy, has reduced the dead weight of board significantly, and the board is as a whole arch structure, and then combines the web set up inside, has formed the stable mechanical structure, can effectively disperse pressure, has avoided the problem that the bending stiffness of flat plate structure is low and can not satisfy the bearing demand.

This invention relates to a seismic energy-dissipating reinforcement device and method for reinforced concrete beam-column joints. The device includes: a first shape memory alloy (SMI) component located on the beam in the beam-column joint area; a second SMI component installed on the column in the beam-column joint area and connected to the first SMI component; and a sliding friction damper connecting the first and second SMI components at both ends. This invention ensures the rigidity of the beam-column joint using a shape memory alloy T-plate while simultaneously dissipating energy and limiting excessive displacement between the beam and column through a sliding friction damper, thereby preventing progressive collapse and enabling automatic repositioning of the joint after deformation, thus enhancing the reinforcement effect of the reinforced concrete beam-column joint.

The utility model relates to linear drainage ditch field discloses a modular linear drainage ditch, including the quantity is two ditch body and sets up the cover body on two ditch body upside, two ditch body opposite side left and right sides all are equipped with the connecting mechanism for connecting two ditch body, and the left and right sides of cover body all are provided with reinforcing mechanism, the connecting mechanism includes the two groups of clamping slots that set up in two ditch body opposite side left and right ends, the clamping piece for two ditch body alignment, and the locking piece that two clamping ditch body are locked, the utility model discloses, adopt modular splicing's mode not only convenient linear drainage ditch's transportation, improve the flexibility when installing simultaneously, set up the sealing ring between adjacent module can effectively avoid groundwater seepage, the setting of clamping piece can be convenient for the quick butt joint between two ditch body between adjacent, and the intercoordination between locking piece can complete fixed between two ditch body, ensure the reliability of two ditch body between connection.

The application discloses a composite steel pipe single pile filled with recycled building materials and a construction method thereof, and belongs to the technical field of steel pipe piles. The composite steel pipe single pile comprises a steel pipe pile body, a cavity is arranged in the steel pipe pile body, the cavity is used for filling recycled building materials, a plurality of interface connecting mechanisms are arranged in the cavity, and a sealing mechanism is arranged on the top surface of the steel pipe pile body. By constructing a steel-filling core composite cross-section structure, the cross-section inertia moment and the overall bending stiffness are improved, the pile top displacement and bending deformation can be effectively reduced under the action of horizontal load, the single pile horizontal bearing capacity is improved by optimizing the cross-section stress system under the condition of controlling the steel consumption, and the structural material utilization efficiency is improved. The collaborative working capacity between the steel pipe and the filling body is enhanced through the interface connecting structure, the overall stress performance of the composite structure is improved, the air retention space in the steel pipe is reduced by filling the recycled building materials, the temperature and humidity fluctuations are alleviated, and the internal service environment is improved.

The utility model relates to the technical field of electro-tricycles, in particular to a stainless steel tube frame for an electro-tricycle, which comprises an upper frame, a lower frame, a head, a lower left side beam and a lower right side beam which are integrally formed, a U-shaped head tube is formed at the front end of the lower left side beam and the front end of the lower right side beam, and a head beam is fixedly connected between the U-shaped head tube and an upper front beam. The head beam and the U-shaped head pipe form a headstock; the lower left side beam and the lower right side beam of the lower frame are integrally formed and extend to form the U-shaped head tube, then the U-shaped head tube is fixedly connected with the upper front cross beam of the upper frame through the head beam, a composite supporting structure of a vehicle head is formed, side body and human body loads are dispersed to all parts from a traditional single welding point, local stress concentration is reduced, and the stability of the vehicle head is improved. The problem of damage caused by breakage of a traditional structural cross beam is avoided; the geometric connection of the head beam and the U-shaped head tube can improve the overall bending resistance and torsional rigidity of the tricycle frame, and the service life of the tricycle can be effectively prolonged.

This utility model relates to the field of cable tray technology, specifically to a lightweight cable tray support using a molding process. It includes a base box with a top cover slidably mounted on one side and several mounting brackets symmetrically mounted on both sides. A limiting component is installed inside the base box to accommodate cable trays of different sizes. A drive component is installed on one side of the base box to drive the limiting component. Compared to existing technologies, this application uses a molding process for one-piece molding, resulting in a lighter and stronger structure. Combined with the adjustable limiting component and drive mechanism, it can adapt to the installation requirements of cable trays of different sizes, achieving efficient and stable limiting and clamping, improving installation flexibility, structural stability, and construction efficiency, reducing overall costs, and possessing greater versatility and practicality.

The utility model relates to the technical field of aluminium veneer provides a kind of aluminium veneer of firm installation, including aluminium veneer body, the outer wall of aluminium veneer body one side is uniformly fixed with longitudinal reinforcing rib, adjacent the longitudinal reinforcing rib between uniformly fixed with reinforcing structure, the reinforcing structure includes transverse reinforcing rib, limit stop and fixed bolt, the transverse reinforcing rib is uniformly set in aluminium veneer body near the side of longitudinal reinforcing rib.The utility model is provided with reinforcing structure, transverse reinforcing rib and longitudinal reinforcing rib form grid structure, can significantly improve the bending stiffness of aluminium veneer body when using, prevent wind pressure deformation, limit stop is locked with longitudinal reinforcing rib by fixed bolt, ensure reinforcing rib spacing uniform, avoid misplacement, guarantee the stability of connection, realized the device has the function of strengthening aluminium veneer body conveniently, improved the stability of this aluminium veneer of firm installation when using.

The utility model discloses a kind of narrow flange H-shaped steel beam lower flange distortion buckling structures. The structure is composed of H-shaped steel beam, reinforced concrete floor, T-shaped transverse stiffening rib, H-shaped embedding fixture and stud. By symmetrically setting T-shaped transverse stiffening rib on both sides of H-shaped steel beam web, it forms H-shaped combined cross-section transverse stiffening rib, improves the bending stiffness and strength of transverse stiffening rib, and at the same time, extends H-shaped transverse stiffening rib upward and embeds it in reinforced concrete floor, improves the restraint capacity outside H-shaped steel beam surface, thereby effectively solves the problem of narrow flange H-shaped steel beam lower flange distortion buckling. It improves the stability of steel beam lower flange, saves cost, has good economic benefit and beneficial effect.

A yeast cell microinjection method and system based on quartz nanoinjection needle belong to the field of microbial single cell operation and microinjection technology. It includes: preparing high rigidity quartz nanoinjection needle and holding needle; biochemical weakening pretreatment is carried out on yeast cells to weaken the cell wall; a microdroplet environment is constructed in a culture dish; single cells are fixed by negative pressure suction in the microdroplet, the quartz nanoinjection needle loaded with injection material penetrates the weakened cell wall in the axial direction, and the material is delivered by positive pressure; the needle is withdrawn and the cell is released. The microinjection method is realized by the yeast cell microinjection system. The high bending stiffness quartz nanoinjection needle is combined with the cell wall weakening treatment, and the stable, low damage puncture of the small size and high rigidity yeast cell is realized; at the same time, the stable osmotic pressure and operation culture space are provided by the microdroplet environment, which is suitable for gene operation and accurate delivery of material at single yeast cell level.

This utility model discloses a workpiece machining fixture, including a tooling, a steering knuckle workpiece placed on top of the tooling, a connecting block fixedly connected to the front of the tooling, and jaws movably connected to both sides of the connecting block via pins. The jaws extend from the side away from the connecting block to the top of the steering knuckle workpiece and contact its surface. An adjustment structure is provided at the bottom of the tooling, which controls the movement of the jaws and clamps the steering knuckle workpiece. The adjustment structure includes a connecting frame fixedly connected to the bottom of the tooling, a screw movably connected inside the connecting frame via bearings, and a threaded sleeve threaded to the surface of the screw. Push rods are fixedly connected to both sides of the threaded sleeve. This utility model achieves the rotational clamping action of the jaws through the pin connection between the connecting block and the jaws, forming a radial constraint force. The mechanical linkage of the adjustment structure replaces direct bolt locking, preventing the threaded pair from loosening due to vibration.

The utility model relates to the field of aluminium honeycomb composite board, especially aluminium honeycomb composite board, including aluminium honeycomb composite board body, the four around of aluminium honeycomb composite board body outer wall all bond with reinforcing side plate, and the top, bottom of aluminium honeycomb composite board body all bond with upper reinforcing plate, lower reinforcing plate, the recess of upper reinforcing plate, lower reinforcing plate all sets in the recess of aluminium honeycomb composite board body side and sets in the recess of upper reinforcing plate with polyurethane elastomer, sets in the recess of lower reinforcing plate with reinforcing rib subassembly. In the utility model, through the reinforcing side plate of four around, upper reinforcing plate and lower reinforcing plate collectively wrap aluminium honeycomb composite board body, strengthen its aluminium honeycomb composite board's structural strength, improve the bending stiffness and the partial load capacity of aluminium honeycomb composite board through the reinforcing rib subassembly of lower reinforcing plate inlaying simultaneously, and through the polyurethane elastomer of upper reinforcing plate inlaying, the impact resistance of aluminium honeycomb composite board has been strengthened.

This utility model discloses a modular steel structure frame that is easy to assemble, relating to the field of steel structure frame technology. It includes vertical columns, with horizontal columns on the outer sides of the vertical columns. A mounting sleeve is slidably connected to the outer side of the vertical columns. An mounting block is fixedly connected to the side of the mounting sleeve away from the horizontal columns. The mounting block has a pushing mechanism and a locking mechanism inside, which cooperate with each other. The pushing mechanism includes a fixing groove, which is located on the side of the mounting block near the vertical column. A sliding frame is symmetrically slidably connected inside the fixing groove. This utility model discloses a modular steel structure frame that is easy to assemble. Through the locking mechanism, the modular steel structure can be quickly assembled. The entire assembly process requires no welding or complex tools; installation or disassembly can be completed simply by pushing and pulling, significantly improving construction efficiency. It has a simple structure and strong practicality.

The application discloses a kind of preformed hole type Z-pin implantation methods with protection, belong to composite Z-pin technical field, comprising: continuous Z-pin is placed in implantation head, pass through the roller set, catheter and hollow thin-walled steel needle of implantation head, control implantation head, make hollow thin-walled steel needle pierce composite material structure, and rise, through the cooperation of roller set and auxiliary cutter realizes the discretization of continuous Z-pin and the effective residence of discrete Z-pin in composite material structure, complete Z-pin implantation.The application can effectively protect Z-pin during implantation, and guarantee the implantation path of Z-pin, and without preparing specific length discrete Z-pin in advance, without preparing foam preform, expand the application range of Z-pin reinforcement process, while greatly improving the implantation efficiency of Z-pin, and good practicality.

The utility model provides a novel structure decoration wall poster which comprises a metal plate pre-installed on a wall body, a base plate and a plurality of neodymium iron boron magnetic strips which are fixedly connected to the base plate and arranged in an array mode, and the base plate comprises a base material layer, a reinforcing layer, a buffering layer, a waterproof layer and a protective layer which are sequentially stacked. A plurality of layers are assembled in a hot-pressing composite processing mode, a decorative plate is arranged on the base plate in a sliding mode, one side of the base plate is fixedly connected with an installation strip with a T-shaped section, and an installation groove used for installing the installation strip of another base plate is formed in the other side of the base plate. According to the decorative wall poster with the novel structure, a mechanical interlocking structure of the T-shaped mounting strip and the limiting rod is arranged, and the neodymium iron boron magnetic strip is connected with the preassembled metal plate in an adsorption manner, so that lossless disassembly of the decorative plate and the base plate and high-precision alignment of multi-unit splicing can be realized under the condition that an adhesive is not needed; the wall damage risk is reduced; and the construction efficiency is improved.

The breathing pipeline connector is used for being detachably connected with an air conveying pipeline and comprises a connector body and an elastic component arranged on the connector body in a sleeving mode, and the connector body and the elastic component are matched to form an airflow channel for fluid circulation; the connector body comprises a pipe body and two first cantilever structures arranged along the pipe body in an aligned mode, each first cantilever structure is provided with a pressing part and a clamping part, the air conveying pipeline is provided with a matching part matched with the clamping part, the breathing pipeline connector is connected with the air conveying pipeline through clamping matching of the clamping parts and the matching parts, and the pressing parts are connected with the pipe body. The pressing part can deflect relative to the pipe body under the action of external force so as to drive the clamping part and the matching part to be unlocked. Due to the fact that the two first cantilever structures are arranged along the pipe body in the aligned mode, a double-finger pressing area conforming to ergonomics is formed, pressing on the pressing part can be achieved through natural kneading of the thumb and the index finger, and therefore the pressing part is driven by one hand to move so as to achieve unlocking of the connector and the gas conveying pipeline.

The utility model provides a wafer overturning structure, which relates to the technical field of semiconductor processing, and comprises an overturning platform mounting plate and an overturning assembly, the overturning assembly comprises a motor arranged on the overturning platform mounting plate, the output end of the motor is provided with a rotating plate, the bottom of the rotating plate is fixedly provided with a cantilever, the cantilever is provided with an adsorption plate, and the adsorption plate is arranged on the overturning platform mounting plate. According to the utility model, the motor drives the rotating plate to rotate and drives the cantilever and the adsorption plate to realize wafer overturning, the parallel finger cylinder pushes the cylinder clamping plate to enable the centering clamping plate to move along the direction of the wafer so as to realize centering calibration of the wafer, and the first cylinder and the second cylinder are linked to adjust the telescopic stroke of the adsorption plate so as to adapt to different wafer sizes. The vacuum chuck is connected with an air channel through an air pipe connector to generate negative pressure to adsorb the wafer, then the motor is started, constant-speed rotation is achieved through the speed reducer, the cantilever drives the wafer to complete turning over, and therefore the wafers of different sizes can be turned over in a compatible mode.

This utility model relates to the field of four-stringed instruments, specifically a composite resonant four-stringed instrument, comprising a body, a soundbox, a neck, and a headstock. One end of the neck is fixedly connected to the headstock, and the other end of the neck protrudes to form a connecting part that mates with one side of the soundbox. Both the neck and the soundbox are hollow structures. The surface of the neck is provided with frets arranged from bottom to top with progressively increasing spacing. The soundbox has a reinforcing beam inside. The beneficial effects are: the hollow neck and the soundbox form a composite resonant cavity, significantly enhancing low-frequency depth and mid-frequency fullness; the I-beam reinforcing beam suppresses body deformation and stabilizes low-frequency response; the figure-eight amplifying beam directionally transmits mid-to-high frequency vibrations, improving tone brightness and soundstage openness; the side wall tone holes optimize the sound wave radiation phase, enhancing the stereo effect; the hollow connecting part disperses neck torque, reducing the risk of tenon joint cracking; the misaligned tuning peg design balances the stress in the peg holes, extending the headstock's lifespan.

The utility model discloses a composite material stringer which is fixed on a fuselage wall plate, the stringer is made of carbon fiber reinforced epoxy resin composite materials, the cross section of the stringer is of a cap-shaped structure, the cap-shaped stringer cross section is provided with four corners, and the four corners comprise two lower stringer internal corners and two upper stringer external corners. A plurality of triangular reinforcing ribs are arranged on the inner sides of the two stringer external corners at intervals, no triangular reinforcing ribs are arranged on the inner sides of the two stringer internal corners, and a pre-deformation area is formed between the stringer internal corners and the fuselage wall plate. The triangular reinforcing rib is designed on the inner side of the external corner of the stringer, and the pre-deformation area is formed between the internal corner of the stringer and the fuselage wall plate, so that the bending rigidity of the fuselage wall plate in the width direction can be increased, and the bending deformation of the composite material skin in the width direction is limited in the curing forming process; and the deformation resistance of the fuselage wall plate in the width direction in use is improved.

This invention provides a lattice-type connection structure and a prefabricated concrete frame, relating to the field of building technology. It includes a lattice-type beam-end connection frame and a connection assembly. The connection assembly includes at least one lattice-type sub-connection frame. Each lattice-type sub-connection frame is configured to connect to either a column or a beam, and includes at least one connection end. The lattice-type beam-end connection frame is configured to connect to the end of the beam. The lattice-type beam-end connection frame includes an upper beam-end plate assembly, a lower beam-end plate assembly, and multiple beam-end connectors. The upper and lower beam-end plate assemblies are vertically spaced at the connection ends, and each beam-end connector is horizontally spaced between the upper and lower beam-end plate assemblies. The aforementioned lattice-type connection structure has good bending stiffness and shear resistance, which can accelerate construction progress and save construction time.

The invention discloses an anti-deformation reinforcing rib structure of a hob blade and a manufacturing method thereof.The anti-deformation reinforcing rib structure of the hob blade comprises a center shaft, a mounting disc fixed to the center shaft and a blade body fixed to the mounting disc, and the blade body is a three-dimensional spiral curved-surface-shaped blade and is provided with a front face and a back face; the blade body comprises a front face and a back face, the front face is a working face facing the cutting direction after installation, the back face is a non-working face and is provided with reinforcing ribs continuously extending along a spiral line track, the reinforcing ribs have height gradients in the width direction of the blade body, and the heights of the reinforcing ribs are gradually decreased from the root of the blade body to the cutting edge end of the blade body. The two ends of each reinforcing rib end on the inner sides of the two axial end faces of the blade body. The anti-bending and anti-torsion cutter has the remarkable anti-bending and anti-torsion functions, the problems of resonance and fatigue damage caused by insufficient rigidity are solved, the cutting flatness is improved, and the service life is prolonged.

The utility model belongs to the technical field of deep flat plate load tests, and particularly relates to an adjustable deep flat plate load test force transmission column device which comprises a bearing platform, a force transmission column assembly arranged at the bottom of the bearing platform, a bearing plate arranged at the bottom of the force transmission column assembly, and a plurality of groups of short columns. The short column comprises a first hollow rectangular shell and a second hollow rectangular shell, the opposite sides of the first hollow rectangular shell and the second hollow rectangular shell communicate with each other, a first rectangular reinforcing frame is arranged at the bottom of the first hollow rectangular shell, and a rectangular sliding groove enabling the first rectangular reinforcing frame to slide is formed in the top of the second hollow rectangular shell. An electric telescopic rod is arranged on the inner wall of the top of the first hollow rectangular shell, and the telescopic end of the electric telescopic rod is connected with the inner wall of the bottom of the second hollow rectangular shell. The device not only can adjust the height, but also can provide excellent axial bearing capacity, flexural rigidity and overall stability in an extension state, so that the load transmission precision is ensured.

This utility model belongs to the field of blast furnace equipment in metallurgy and ironmaking, specifically relating to a device for preventing the blast furnace tuyeres from warping during production. It includes a tuyeres sleeve, with a large sleeve surface on the side closer to the large sleeve and a small sleeve surface on the side closer to the small sleeve. A threaded hole is formed on the large sleeve surface, and a threaded hole is formed on the small sleeve surface. A large reinforcing disc is fixedly connected to the end face of the large sleeve surface, and a small reinforcing disc is fixedly connected to the end face of the small sleeve surface. This device prevents the blast furnace tuyeres sleeve from warping during production by adding a large reinforcing disc and a small reinforcing disc to the large and small sleeve surfaces of the tuyeres sleeve, respectively, forming a double-end rigid support structure. Combined with the staggered layout of circumferentially distributed threaded holes and mounting holes, the overall bending stiffness of the tuyeres sleeve is improved. Under high-temperature conditions of 1200℃, the circumferential thermal deformation is significantly reduced, effectively preventing sealing failure caused by warping deformation.

The invention discloses a hogging moment area structure of a steel-concrete composite beam and an anti-cracking reinforcing method, and belongs to the field of bridge engineering. A hogging moment area structure of a steel-concrete composite beam comprises a concrete panel, an I-shaped steel beam and a shearing force connecting piece, the concrete panel and the I-shaped steel beam are connected through the shearing force connecting piece, and a stress induction groove is formed in the top end of the concrete panel; through the preset V-shaped stress induction groove, random uncontrollable cracks of the concrete panel in a hogging moment area are converted into controllable deformation at a specific position; by matching with the filled asphalt horseshoe grease and the anti-crack cover plate covering the top, a stress dredging and flexible sealing dual-protection system is formed, and the path that rainwater on the road surface infiltrates downwards to corrode the steel beam is effectively blocked; in addition, the notch groove in the bottom of the anchoring part of the anti-crack cover plate and the concrete panel form a bolt pin effect, and the anti-shearing stability and the anti-stripping capacity of the cover plate under the dynamic load are remarkably improved in cooperation with fixation of countersunk bolts.

This application relates to a floor assembly and a vehicle, belonging to the field of vehicle body reinforcement technology. The floor assembly includes: a longitudinal beam with a first inner cavity extending through it; the longitudinal beam includes at least two first reinforcing plates and at least one second reinforcing plate; the first reinforcing plates are spaced apart within the first inner cavity, and the second reinforcing plate is disposed within the first inner cavity and cross-connected to the first reinforcing plates; a crossbeam connected to the longitudinal beam; the crossbeam has a second inner cavity extending through it, and the crossbeam includes at least one third reinforcing plate and at least one fourth reinforcing plate; the third reinforcing plates are spaced apart within the second inner cavity, and the fourth reinforcing plate is disposed within the second inner cavity and cross-connected to the third reinforcing plates; and a mounting bracket disposed on the side of the longitudinal beam near the bottom of the vehicle and embedded in the first inner cavity, the mounting bracket being connected to at least two of the first reinforcing plates. The multi-cavity structure of this application can significantly increase the structural strength and deformation resistance of the longitudinal and crossbeams, improving the overall rigidity of the vehicle body.

The utility model relates to the technical field of filter plate processing design, in particular to a high-strength filter plate processing device, which is characterized in that an arc-shaped structure is arranged in a transition area of a sealing surface and a dot surface, the curvature radius R is 5-50mm, and the thickness t1 of the arc-shaped area is 1.2-3.0 times of the thickness t0 of a filter plate main body. An arc transition structure with a specific curvature is arranged in a stress concentration area of the filter plate, and a multi-dimensional optimization scheme of thickness compensation, reinforcing ribs, flow guide holes and the like is matched, so that stress distribution optimization and mechanical property improvement are realized. The technology effectively solves the problem of cracking of a transition area of a traditional filter plate, remarkably prolongs the service life, and is suitable for filter pressing equipment in the fields of chemical engineering, environmental protection and the like.

This utility model discloses an expansion tank bracket for commercial vehicles, including a circular tube beam as the main support beam; multiple sheet metal brackets are fixed to the circular tube beam by welding; the sheet metal brackets together constitute the expansion tank fixing structure and are bolted to the cab mount. The invention employs a circular tube-sheet metal structure and welding to form an expansion tank bracket, which is then bolted to the cab mount. The advantages of this invention are its simple structure, reliability, high strength, and ability to effectively prevent bracket cracking caused by expansion tank vibration.

The utility model relates to track section technology field provides a track section for production line packaging equipment, including section body, the top and left and right sides of section body all are seted up with sliding slot, the sliding slot extends along the length direction of section body, the sliding slot is used for installing sliding block, T type nut or functional assembly, the cross section of each sliding slot is trapezoidal, its short side is to the center of section body, and both side walls all are equipped with inclined section to form the trapezoidal structure, the short side of sliding slot is to the center of section body, both side walls of sliding slot all are provided with boss, the boss extends along the length direction of sliding slot, the boss is used for with the cooperation surface of sliding block, T type nut or functional assembly abuts. In the utility model, through setting up the sliding slot at the top and left and right sides of section body, and cooperating with the trapezoidal cross section structure formed by inclined section in the sliding slot and the boss setting along the length direction, the multidirectional installation function and high stability connection are realized.