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143results about How to "Reduce deflection" patented technology

Composite material storage box forming mold and manufacturing method thereof

The invention discloses a composite material storage box forming mold and a manufacturing method thereof, and belongs to the technical field of composite material forming molds. An end socket connecting block, an end socket cylinder section connecting ring, a split type cylinder body assembly, a cap-shaped reinforcing rib and the like are manufactured in parallel and assembled to obtain the composite material storage box forming mold. The self-weight of the mold is greatly reduced while the outer molded surface of the combined mold is guaranteed, the mold filling and demolding processes are simplified, the end socket is left in the product after the product is formed, the strength and rigidity of the storage box are improved, and a stable connecting port can be provided.
Owner:AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH

Optical imaging lens

The invention provides an optical imaging lens. The optical imaging lens comprises a lens barrel, and a lens group and a spacing element group which are arranged in the lens barrel, the lens group sequentially comprises a first lens to a fifth lens from an object side to an image side along an optical axis direction, and the object side surface of a second lens is a concave surface; the spacing element group at least comprises a first spacing element; the first spacing element is positioned between the first lens and the second lens and is in contact with the image side surface part of the first lens; the air interval T12 of the first lens and the second lens on the optical axis and the maximum thickness CP1 of the first interval element meet the following condition: T12 / CP1 is more than or equal to 2.67 and less than or equal to 3.45; the curvature radius R3 of the object side surface of the second lens and the inner diameter d1m of the image side surface of the first spacing element satisfy the following relation:-2.76 < = R3 / d1m < =-2.14. The optical imaging lens solves the problem that stray light is serious in order to meet the assembly stability requirement in an optical imaging lens in the prior art.
Owner:ZHEJIANG SUNNY OPTICAL CO LTD

Vertical steam generator device

The utility model discloses a vertical steam generator device, which relates to the field of waste heat boiler devices and comprises a smoke inlet pipeline, an upper tube plate, a barrel, a smoke tube, a lower tube plate and a smoke outlet pipeline. And after passing through the through holes of the upper tube plate, the smoke tube and the through holes of the lower tube plate, the liquid leaves from the smoke outlet pipeline, after entering from the water inlet pipeline, the liquid is subjected to heat exchange to become a steam-water mixture, and the steam-water mixture sequentially passes through the cavity and the steam collecting pipeline and finally enters the steam collecting box. According to the utility model, the waste heat boiler is arranged in the vertical flue, so that the occupied area of the waste heat boiler is reduced, and the whole arrangement of the waste heat boiler is compact.
Owner:JINAN HUANGTAI GAS STOVE CO LTD +1

Pipe straight seam welding system and method, electronic device and storage medium

The invention relates to a straight seam welding system for pipes, which is provided with a working platform and a rack fixed on the working platform, and is characterized in that the working platform is provided with a feeding station, a calibration station and a welding station, the feeding station is provided with a feeding mechanism capable of feeding, clamping and positioning the pipes, and an outer centering mechanism; the calibration station is provided with an inner centering mechanism, a hanging arm, a hook mechanism and a pipe pushing mechanism, wherein the hanging arm is fixed to the rack and can stretch into a pipe to support the pipe when the pipe is fed, the hook mechanism can be connected with the hanging arm in a matched mode, and the pipe pushing mechanism can push, press and position the pipe on the hanging arm. The piano key pressing plate mechanisms are oppositely arranged on the rack and can abut against the tops of the pipes, and a laser welding mechanism capable of welding weld joints on the pipes is arranged on the welding station; the invention further relates to a welding method, an electronic device and a storage medium. The pipe welding device is ingenious in structure, capable of achieving fast, efficient, stable and accurate welding of pipes, convenient and practical.
Owner:WUXI QINGYUAN LASER TECH

Tractor inflation and deflation system and method and tractor

The invention provides a tractor inflation and deflation system and method and a tractor. A tractor inflation and deflation system comprises a control valve set, an air source, a plurality of wheel side valves, a plurality of tires, a front axle and a rear axle, the control valve set is connected with the air source and the wheel side valves through pipelines, the wheel side valves are connected with the tires, and the tires are installed on the front axle and the rear axle respectively.
Owner:WEICHAI LEIWO (WEIFANG) AGRICULTURAL EQUIPMENT CO LTD

Digital signal processor (DSP) high-frequency inverter table type miniature spot welding machine

The invention discloses a DSP (Digital Signal Processor) high-frequency inverter table type miniature spot welding machine, which relates to the technical field of electric welding machines, and comprises a machine tool, a welding host is fixedly mounted in the machine tool, a linear driving mechanism is fixedly mounted at the bottom of the inner wall of the machine tool, and a spot welding machine main body is fixedly mounted at the output end of the linear driving mechanism; a heat dissipation device is fixedly installed on the outer side wall of the machine tool, a three-color lamp is fixedly installed at the top of the machine tool, a rectangular plate is fixedly installed at the bottom of the inner wall of the machine tool, and a rectangular groove is formed in the face, close to the spot welding machine body, of the rectangular plate. The fixing device comprises a pull rod, a carrying table, a loading disc, a welding piece, a sliding table, a flexible block, a tungsten filament, a linkage plate, a rubber plate, a pushing plate, a first spring and a limiting rod, the welding piece and the tungsten filament are attached through standard operation, an operator can conveniently adjust the attaching angle in a safe area, and the spot welding quality can be improved.
Owner:JIANGSU NORTHEND ELECTRONIC TECH CO LTD

Agricultural inflation and deflation system with load sensor, method and harvester

The invention provides an agricultural inflation and deflation system with a load sensor, an agricultural inflation and deflation method and a harvester. An agricultural inflation and deflation system with load sensors comprises a pair of load sensors, a control valve set, an air source, a plurality of wheel side valves, a plurality of tires, a front axle and a rear axle, the pair of load sensors are installed on the front axle and the rear axle respectively, and the control valve set is connected with the air source and the wheel side valves through pipelines respectively. The plurality of wheel side valves are respectively connected with the plurality of tires, and the plurality of tires are respectively arranged on the front axle and the rear axle.
Owner:LOVOL HEAVY IND CO LTD

Door seal

Provided is a door weather strip for a vehicle that suppresses a door frame of a door for a vehicle from being drawn out to the outside in the vehicle width direction by a pressure difference between the inside and outside of the vehicle when the vehicle is traveling at high speed. The door weather strip (10) has a mounting base (21) that is mounted to the door frame or a door trim, and a sealing lip (22) that abuts against a door opening portion peripheral edge (6) when the door (1) is closed. A protrusion (23) that abuts against the door opening portion peripheral edge (6) when the door (1) is closed is formed on the door opening portion peripheral edge (6) side of a front end portion (22a) of the sealing lip (22). A hard portion (70) that is harder than the material that constitutes the sealing lip (22) is formed so as to extend from a lower area of the protrusion (23) to the root portion (22b) side of the sealing lip (22).
Owner:TOYODA GOSEI CO LTD

Bearing inner and outer ring reciprocating screening device

PendingCN122722573AIncrease cleaning throughputReduce deflection
The application discloses a bearing inner and outer ring reciprocating screen washing device, which comprises a rack, a driving mechanism, a reciprocating motion conversion mechanism, a lifting beam and a plurality of screen washing assemblies. The reciprocating motion conversion mechanism comprises a transmission main shaft, an eccentric wheel, a connecting rod, a guide sliding seat and a guide column, the transmission main shaft is in transmission connection with the driving mechanism, the eccentric wheel is fixed to the transmission main shaft, the connecting rod connects the eccentric wheel and the guide column, and the guide column is in sliding fit with the guide sliding seat in the vertical direction and is connected with the lifting beam. The lifting beam has a plurality of outward extending ends, and the plurality of screen washing assemblies are arranged at the corresponding outward extending ends respectively. When the driving mechanism drives the transmission main shaft to rotate, the eccentric wheel drives the guide column and the lifting beam to vertically reciprocate through the connecting rod, so that the plurality of cleaning screen baskets are synchronously up and down for screen washing. The application can realize multi-station synchronous cleaning, and improve the reciprocating motion stability and cleaning uniformity.
Owner:ZHEJIANG ELECTROMECHANICAL VOCATIONAL & TECH COLLEGE

Quick-change tool holder for CNC machining center

ActiveCN224587563UReduce deflectionSolve the gap problem
This utility model relates to the field of machining center technology, specifically a quick-change tool chuck for CNC machining centers. It includes a spindle motor and a cutting tool. The spindle motor is mounted on the top of the spindle housing, and a Z-axis motor is fixedly connected to the back of the spindle housing. A motor is mounted on the top of the Z-axis motor, and a guide rail is mounted on the back of the Z-axis motor. The guide rail is mounted on the front of the column. This utility model significantly reduces tool runout and improves radial runout accuracy. The tapered hole design around the spindle port simplifies the mechanical structure and achieves synchronous positioning of the end face and the tapered surface, avoiding the gap problem of traditional tapers and reducing manufacturing costs. The built-in spring and pull stud assembly of the chuck can be disassembled separately, reducing maintenance costs. It overcomes the limitations of traditional chucks in terms of quick tool change, accuracy maintenance, and cost control, providing a better solution for efficient and precise machining in CNC machining centers.
Owner:SHENZHEN SHANGRUI PRECISION MODEL CO LTD

Magnetic type spinner split pump head assembly

The invention discloses a magnetic type spinner split pump head assembly, which belongs to the technical field of plunger pumps, and comprises a pump head and a pump body which are detachably connected, a plunger rod is arranged in the pump head and the pump body in a matched manner, a connecting piece is arranged on the periphery of the joint of the pump head and the pump body, a first cylindrical surface matched with the connecting piece is arranged on the outer side of the pump head, and a second cylindrical surface matched with the first cylindrical surface is arranged on the outer side of the pump head. The cylindrical surface is provided with external threads, the connecting piece is provided with internal threads matched with the external threads, the outer side of the pump body is provided with an extending part, the extending part is matched with one end of the pump head, and the connecting piece enables the extending part to be axially close to the pump head. According to the invention, the pump head and the pump body can be quickly and nondestructively assembled with high sealing performance, and the efficiency and the stability of material replacement are improved.
Owner:杭州精进科技有限公司

Supporting structure for beam column repair

The utility model relates to the related technical field of beam body repairing, and discloses a supporting structure for beam column repairing, which is characterized in that a main force supporting frame is symmetrically provided with transverse vertical rods, and the right end surfaces of the symmetrically arranged transverse vertical rods are fixedly connected with transverse connecting plates; transverse end blocks are fixedly mounted on the outer end surfaces of the symmetrically mounted transverse connecting plates, a main connecting rod is fixedly mounted between the symmetrically mounted transverse end blocks, a buffer spring is slidably mounted on the surface of the main connecting rod, and lower fixed connecting parts are fixedly connected to the left side ends of the symmetrically mounted transverse vertical rods; the stability of the beam column structure can be effectively enhanced through the beam body repairing frames arranged on the two sides of the beam, the overall rigidity and the bearing capacity of the structure can be improved by perforating the beam bodies and fixing the beam bodies through the supporting structures, and therefore the anti-seismic and wind-resistant capacity of the beam column structure is enhanced.
Owner:ZHEJIANG DALU CONSTR SPECIAL ENG CO LTD +1

Tap tool and tap processing method

The tap tool (10) has a rotation axis (C r ), in a state where the central axis (C6) of a pre-drilled hole (6') provided in a workpiece is aligned with the rotation axis, the pre-drilled hole is processed into a threaded hole (6), characterized in that the tap tool (10) comprises: a threaded portion (14), having a blade portion (14a) for processing a thread groove of the threaded hole; a pad portion (15, 16) located behind the blade portion in the rotation direction, the pad portion being engaged with the thread groove processed by the blade portion during the processing of the thread groove; and a non-engaging portion (17), forming a space (20) between the threaded hole and the non-engaging portion when viewed in a cross-section with the rotation axis aligned with the central axis of the threaded hole. The space has a size such that when the tap tool is displaced in the threaded hole in a direction orthogonal to the rotation axis from the state where the rotation axis is aligned with the central axis of the threaded hole, the engagement between the threaded portion and the thread groove and the engagement between the pad portion and the thread groove can be released simultaneously.
Owner:MAKINO MILLING MASCH CO LTD

A machine vision-based crankshaft axis detector

This invention discloses a crankshaft axis inspection instrument based on machine vision, belonging to the field of crankshaft inspection technology. The machine vision-based crankshaft axis inspection instrument includes an inspection table and a primary lead screw slide mounted on the inspection table. A primary slide is slidably mounted on the primary lead screw slide, and a mounting frame is fixed on the primary slide. A vision camera for visually inspecting the crankshaft axis is mounted on the mounting frame. A support frame is vertically fixed on the mounting frame, and an illumination component coaxial with the vision camera is mounted on the support frame. Two sets of follow-up support wheels are provided below the crankshaft main journal to prevent deformation due to their own weight. A base component is provided on the support frame to adjust the position and angle of the follow-up support wheels. A base is mounted on the base component, and an adaptive support sensing component is provided on the base to sense the pressure of the follow-up support wheels supported below the crankshaft main journal. This inspection instrument can support and limit the crankshaft main journal, reduce axis inspection interference, and improve the accuracy of visual inspection.
Owner:TAIZHOU KEER PRECISION MASCH CO LTD

Plug-in fixed attenuator

The utility model relates to the technical field of attenuators, and discloses a plug-in type fixed attenuator, which comprises an attenuator body and a plurality of pins arranged at one end of the attenuator body, and a protection assembly is embedded in the outer walls of the two sides of the attenuator body in a sliding connection mode. The end, away from the attenuator body, of the protection assembly is fixedly connected with a cleaning assembly, and the side wall of the cleaning assembly is fixedly connected with a plurality of fastening assemblies. According to the utility model, through the arrangement of the protection assembly, before insertion and use, the outer housing of the protection assembly wraps the plurality of pins inside for protection, so that the condition that the pins are exposed to the outside, are bent under the action of external force and cannot be connected with the guide groove is avoided; under the elastic action of the springs, the movable blocks drive the corresponding fastening blocks to abut against and be fixed to the guide grooves, and connection of the attenuator body is reinforced.
Owner:ZHUHAI EASTEVER ELECTRONIC CO LTD

Shear connector, steel-concrete composite beam comprising the shear connector, and construction method thereof

ActiveCN117403530BReduce shear slip resistanceResist vertical lifting force
The application discloses a shear connector, a steel-concrete composite beam containing the shear connector and a construction method of the steel-concrete composite beam. The shear connector comprises an inverted truncated cone type cylinder (7), a stiffener, a cover plate, a penetrating steel bar (8) and a high-strength bolt (21); the stiffener comprises an integrally formed stiffener bottom plate (13) and a stiffener side plate (14), the size of the stiffener bottom plate is consistent with the size of the lower opening of the cylinder, and the stiffener bottom plate is attached to the lower opening of the cylinder; the stiffener bottom plate is provided with a second connecting hole for connecting the high-strength bolt; the stiffener side plate is arranged around the stiffener bottom plate and is attached to the inner wall of the cylinder; the height of the stiffener side plate is lower than that of the first connecting hole; the cover plate covers the upper opening of the cylinder; the penetrating steel bar transversely passes through the cylinder through the first connecting hole and leaves a connecting section on each side of the cylinder; and the high-strength bolt connects the stiffener bottom plate through the second connecting hole. The application realizes the disassembly and replacement of each component of the shear connector and the prefabricated bridge deck; and the structure form and stress performance of the shear connector are optimized.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY +1

Anti-abrasion device for fork-shaped lug plate sling connecting piece of suspension bridge

The utility model discloses an anti-wear device for a fork-shaped lug plate sling connecting piece of a suspension bridge, which is mounted between a fork-shaped upper lug plate and a fork-shaped lower lug plate of the fork-shaped lug plate sling connecting piece and comprises a bulb-shaped push rod, a spring sleeve, a thrust spring and a saddle type clamping plate, the ball-head-shaped push rod and the spring sleeve are telescopically connected into a whole, a ball head of the ball-head-shaped push rod is matched with the spherical clamping groove in the upper lug plate, and an annular boss of the spring sleeve is matched with the sliding groove in the side wall of the saddle type clamping plate in the lower lug plate. When the sling connecting piece rotates, the sling connecting piece can adapt to rotation, friction between the upper lug plate and the lower lug plate of the connecting piece during rotation is reduced, and damage to components is reduced.
Owner:CHANGAN UNIV +1

Composite steel wire rope for mine hoisting and manufacturing method thereof

According to the composite steel wire rope for mine hoisting and the manufacturing method of the composite steel wire rope, the center strand is made of the aramid fibers, meanwhile, the rope core strand formed by twisting the filaments formed by melting and drawing various high-strength fibers is twisted outside the center strand, and the strength and the tensile property of the composite rope core are greatly improved; and the high-toughness corrosion-resistant steel wire rope has good toughness and corrosion resistance, and is suitable for mine environments and high-load applications thereof. Meanwhile, a graphite fluoride coating is arranged outside the inner-layer strand, and a polytetrafluoroethylene coating is arranged outside the outer-layer strand, so that the friction among the inner-layer strand, the outer-layer strand, the filling strand and the special-shaped steel wires during use can be reduced, and the inner-layer strand and the outer-layer strand have excellent corrosion resistance; the inner-layer strands and the outer-layer strands can keep good performance in a severe environment; in addition, through filling of the filling strands and the special-shaped steel wires, the compactness of the steel wire rope is increased, the whole structure of the steel wire rope is firmer, tighter and more pressure-resistant, and the mechanical property of the steel wire rope is improved.
Owner:JIANGSU SAFETY STEEL WIRE ROPE

Large pipeline multi-cutter synchronous cutting machine

ActiveCN224738363URealize synchronous surround cuttingImprove cutting accuracy
This application discloses a large-scale multi-blade synchronous pipe cutting machine, including a base, on which a mounting seat is fixedly installed. A ring rack seat is fixedly installed inside the mounting seat, and multiple mounting brackets are arranged inside the mounting seat. A second motor is fixedly installed on each mounting bracket, and a rotating shaft is rotatably connected inside the mounting bracket via bearings. The output shaft of the second motor passes through the mounting bracket and is fixedly connected to the rotating shaft. Gears are fixedly installed on the rotating shaft, and all gears mesh with the ring rack seat. By simultaneously activating multiple second motors, the rotational motion of the gears is converted into translational motion along the circumference of the rack. However, because the gears are constrained by the mounting brackets and can only rotate around the center of the rack, the gears drive the mounting brackets to revolve around the central axis of the ring rack seat, causing the cutting blades to perform circular motion around the pipe axis, achieving synchronous multi-blade circular cutting, thus significantly improving cutting accuracy and efficiency.
Owner:HUBEI ZHENGLIU PIPE TECHNOLOGY CO LTD

Adjusting device and method suitable for machining outer circle of thin-wall slender shaft and machining method

The invention discloses an adjusting device and method suitable for outer circle machining of a thin-wall slender shaft and a machining method, and belongs to the technical field of machining. The adjusting device suitable for machining the outer circle of the thin-wall slender shaft comprises a fixing frame and an adjustable limiting mechanism, when the adjustable limiting mechanism is installed on the fixing frame, the axis of the adjustable limiting mechanism is controlled to be collinear with a second center line of the fixing frame, and when the fixing frame is installed on a machine tool, the second center line of the fixing frame is collinear with the machining axis of the machine tool; furthermore, the adjustable limiting mechanism is provided with limiting assemblies which are symmetrical along the axis of the adjustable limiting mechanism, and the first center line of the inner hole of the thin-wall slender shaft penetrating through the adjustable limiting assemblies can be adjusted to be consistent with the machining axis of the machine tool. According to the adjusting device suitable for machining the outer circle of the thin-wall slender shaft, the first center line of the thin-wall slender shaft can be adjusted to be collinear with the machining axis of a machine tool, the outer circle outline of the machined thin-wall slender shaft is concentric with an inner hole, and the wall thickness difference is eliminated.
Owner:WUHAN SHIP COMM RES INST (NO 722 RES INST OF CHINA STATE SHIPBUILDING CORP)

An adjustable diamond chamfering wheel mounting structure

ActiveCN224587782UPrevent deviationreduce wavy
This utility model relates to the field of processing equipment technology and discloses an adjustable diamond chamfering wheel mounting structure. It includes a base and a drive assembly. The drive assembly is disposed on one side of the base and includes a protective box fixedly connected to one side of the base. A first drive motor is fixedly connected to the inner wall of the protective box. A first gear is fixedly connected to the output end of the first drive motor, and a second gear meshes with the outer side of the first gear. This utility model, by setting up a drive assembly and an adjustment assembly, avoids the problem of traditional mounting structures relying on bolts or simple slide rails to adjust the chamfering wheel position, which makes the adjustment process susceptible to external factors. It also solves the problem of uneven force during adjustment, leading to deviations in chamfering depth or angle, reducing the influence of external factors, minimizing swaying or jamming, and reducing errors.
Owner:FOSHAN HONGCHENG NEW MATERIAL TECH CO LTD

A protective cover for monitoring wires used in the Internet of Things

The present invention discloses a protective cover for monitoring wires for the Internet of Things, comprising a connector, a connecting wire is fixedly connected to the rear end of the connector, a clamping assembly is arranged on the outer side of the connector, the clamping assembly comprises a first clamping ring, a pressure ring is movably connected to the upper end of the first clamping ring, a fixing assembly is arranged on the outer side of the connecting wire, the fixing assembly comprises a second clamping ring, a mounting ring is arranged on the upper end of the second clamping ring, a connecting assembly is arranged between the clamping assembly and the fixing assembly, and the present invention can protect the connection between the connector and the connecting wire, prevent the connection from being broken by external collision, and ensure the use of the connector.
Owner:FOSHAN FUSHIDA INTELLIGENT TECHNOLOGY DEVELOPMENT CO LTD

Angle correction assembly and correction method and device for scanning equipment

The invention relates to the technical field of medical imaging equipment, and discloses an angle correction assembly and a correction method and device for scanning equipment. The first end of a connecting piece in the angle correction assembly is freely and rotatably connected with a first reference part, and the second end of the connecting piece is connected with a second reference part; the projection of the connecting line of the reference points on the first reference part and the second reference part on the reference surface is parallel to the gravity direction; the method comprises the following steps: acquiring a scanned image of the angle correction assembly by scanning equipment; determining a position relation of reference points of the first reference part and the second reference part in a bulb tube coordinate system based on the scanning image of the angle correction assembly; based on the position relation of the reference points of the first reference part and the second reference part, the zero-position error amount of the bulb tube of the scanning equipment is calculated, and the zero-position error amount is the offset of the actual zero position of the bulb tube relative to the ideal zero position; and correcting the scanned image of the target object based on the zero-bit error amount.
Owner:NEUSOFT MEDICAL SYST CO LTD

Radar antenna locking device

The invention discloses a radar antenna locking device, which relates to the field of radar antennas and comprises a supporting component, which is installed on the top of a vehicle body; a locking component, which is installed on one side of the radar antenna on the top of the vehicle body and can be connected to the supporting component to lock and limit the radar antenna; the radar antenna locking device realizes increased stability by symmetrically tilting two hydraulic rod components; through tilting, the hydraulic rods will generate a horizontal component when subjected to force, and at the same time greatly reduce the lateral pressure on the hydraulic rods caused by sharp turns, large turns or bumps in driving, so that the radar antenna is more firmly fixed on the vehicle body or the supporting structure, thereby improving the overall stability; reducing deflection and deformation, especially in the case of long-distance support, this arrangement can effectively reduce deformation caused by deadweight or external loads; reducing pressure concentration, the tilted arrangement can disperse this pressure and reduce stress concentration of structural components.
Owner:Chinese People's Liberation Army Unit 68303

High-temperature forming die

The utility model provides a high-temperature forming mold which comprises a fixed mold insert and a movable mold insert, and a first fine positioning piece and a second fine positioning piece are respectively arranged on two sides of the fixed mold insert; the matching face of the first fine positioning piece and the movable mold insert is cylindrical, and the matching face of the second fine positioning piece and the movable mold insert is rectangular. The cylindrical matching face can limit the fixed mold insert and the movable mold insert to generate two kinds of relative displacement, the first kind of relative displacement is parallel to the axis of the cylindrical matching face, and the second kind of relative displacement is perpendicular to the axis of the cylindrical matching face. And the rectangular matching surface can limit the relative displacement of the fixed mold insert and the movable mold insert parallel to the axis of the rectangular matching surface. By combining the first fine positioning piece and the second fine positioning piece, the conditions of deflection and displacement generated when the fixed mold insert and the movable mold insert are matched can be reduced under the high-temperature condition, so that the matching precision between the fixed mold insert and the movable mold insert is ensured.
Owner:ZHUHAI GREE PRECISION MOLD CO LTD +1

Prestress pipe jacking device

The invention provides a prestressed pipe jacking device which comprises a steel sleeve and a plurality of steel sleeves, the steel sleeve comprises a plurality of transverse steel sleeves and a plurality of vertical steel sleeves, each transverse steel sleeve comprises a plurality of pipe joints, the transverse steel sleeves are arranged in parallel, and the vertical steel sleeves are perpendicular to the transverse steel sleeves; the counter-force base is fixed on the ground, and the counter-force base is connected with the transverse steel sleeve and the vertical steel sleeve; and the connecting mechanism is connected with the plurality of pipe joints, and is used for connecting the pipe joints with the counter-force base. The connecting mechanism comprises a steel strand, and the bending resistance of the pipe jacking structure is improved by applying prestress to the steel strand. The prestressed steel strand and the steel sleeve are connected into a whole through the steel plate component, the dead weight of the whole structure is reduced, concrete is prevented from being pulled and cracked, the bending resistance is further improved, and the longer pipe jacking length can be achieved.
Owner:SHANGHAI SHENTONG METRO

Modular steel structure frame convenient to splice

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.
Owner:JIANGSU FANGZHENG STEEL PIPE

Beam column structure for building reinforcement

The invention relates to the technical field of building reinforcement, in particular to a beam column structure for building reinforcement, which comprises a supporting seat, a top reinforcing member, an end reinforcing member and a driving member, the supporting seat is rotatably connected with the driving member, the top reinforcing member reduces damage to a tension area at the lower part of a beam, and the beam column structure is convenient to adjust, move, mount and dismount. The space occupied by the device can be reduced by separating the supporting column from the screw rod, operation of constructors is facilitated, disassembly and assembly can be conveniently conducted through pin connection, parts are convenient to maintain and replace, force arm support is increased by clamping the stand column through the supporting base and the end reinforcing component, the beam part is supported through the top reinforcing component, the deflection of the beam is reduced, and the construction efficiency is improved. The end reinforcing component and the top reinforcing component can form a simple and adjustable truss supporting structure, end adjustment and supporting of the beam column body are achieved, then multi-direction synchronous reinforcing at different heights is conducted, and the situation that concrete is not completely solidified, and consequently the beam column inclines and breaks is prevented.
Owner:LIUZHOU ARCHITECTURE DESIGN KEXUE RES YUAN

Agricultural trailer inflation and deflation system and method and trailer

The invention provides an agricultural trailer inflation and deflation system and method and a trailer. An agricultural trailer inflation and deflation system comprises a control valve set, an air source connector, a plurality of wheel side valves, a plurality of tires, a trailer axle and an ISOBUS connector, the control valve set is connected with the air source connector and the wheel side valves through pipelines, the wheel side valves are connected with the tires, the tires are connected with the trailer axle, and the ISOBUS connector is connected with the trailer axle. The tires are installed on the trailer axle, and the ISOBUS connector is connected with the control valve set.
Owner:WEICHAI LEIWO (WEIFANG) AGRICULTURAL EQUIPMENT CO LTD