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701 results about "Fixed Beam" patented technology

A fixed beam is one with ends restrained from rotation. In reality a beams ends are never completely fixed, as they are often modeled for simplicity.

Low-cost dual-polarization electric scanning base station antenna applied to 5G communication

The invention provides a low-cost dual-polarization electric scanning base station antenna applied to 5G communication, and provides an effective method for the design of a low-cost electric control scanning base station antenna. According to the invention, an antenna array surface is formed based on 2-bit dual-polarized microstrip antenna units, the antenna array surface and a feed network are in plug-in connection, and the feed phase of each antenna unit is controlled through an external wave control circuit board, so that phased wave beam scanning is realized. The base station antenna has the beneficial effects that compared with a traditional fixed beam base station antenna, the coverage range of the base station antenna can be effectively expanded; according to the invention, the microstrip antenna units are separated from each other and are not printed on a whole dielectric plate, so that the array scale can be flexibly controlled according to actual requirements; the antenna unit integrates two functions of radiation and phase shift, so that an external phase shifter is omitted, and the processing, assembling and maintenance costs are greatly reduced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Mesh clamping equipment

The utility model discloses mesh clamping equipment, and belongs to the technical field of aerated plate production. The device comprises a base, a pair of mechanical arms are symmetrically arranged at the two ends of the base, a fixed beam is connected between the pair of mechanical arms, and a plurality of mesh clamping devices are installed on the fixed beam in the length direction of the fixed beam; the mesh clamping device comprises a transverse displacement mechanism mounted on the fixed beam, the end part of the transverse displacement mechanism is fixedly connected with a mounting plate, and a mesh clamping jaw is mounted on the mounting plate; the transverse displacement mechanism drives the mesh clamping jaw to move in the width direction of the fixed beam. According to the utility model, the mesh can be grabbed and accurately clamped on the plastic card, the flexibility and stability of the mesh in the moving process are improved, and the networking efficiency is improved.
Owner:ANHUI KEDA IND CO LTD

Modular truck bed tonneau cover

A modular tonneau cover includes two longitudinal and foldable doors, each door including two hinged longitudinal sections. The cover, when flat, is operable to cover the open top beds of trucks. The doors are supported and lockable by three fixed beam assemblies attached to the front and sidewalls of the bed and by a removable beam assembly over the tailgate. Each door may be folded to the side or towards the center of the bed or re-flattened within the beams' framework using locking pins. The folding movement of the doors' is assisted by pinions rolling on racks within the front and tailgate beams. When the desired position of the door is reached, the pins are extended into locking holes.
Owner:JIANGSU RONG FU KANG MEDICAL INSTRUMENTS CO LTD

Multi-modal and multi-degree-of-freedom piezoelectric active vibration isolation platform and working method therefor

Disclosed is a multi-modal and multi-degree-of-freedom piezoelectric active vibration isolation platform and a working method therefor. The piezoelectric active vibration isolation platform includes an upper platform, a lower platform, a control module, and four vibration isolation modules, where the vibration isolation module includes a passive vibration isolation unit and an active vibration isolation unit; the passive vibration isolation unit includes an upper connector, a lower connector, a cross Hooke hinge, and a first acceleration sensor; the active vibration isolation unit includes a fixed beam, a pre-tightening bolt, a second acceleration sensor, and a driving component; the platform can provide active vibration isolation for the longitudinal (axial) vibration and the bending vibration in any radial direction of a vibration isolation object, and has the advantages of fast response, resistance to electromagnetic interference, and light weight.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Belt conveyor belt detection device and use method thereof

The invention discloses a belt conveyor belt detection device and a using method thereof, and relates to the technical field of belt detection.The belt conveyor belt detection device comprises a tensile testing machine body, a detection mechanism is arranged on the tensile testing machine body and comprises a detection control box, and the detection control box is fixedly connected to one side of the tensile testing machine body; the movable cross beam is located in the middle of the tensile testing machine body, the fixed cross beam is fixedly connected to the bottom of the tensile testing machine body, the bottom of the movable cross beam and the top of the fixed cross beam are both connected with driving assemblies, and tension sensors are arranged between the movable cross beam and the corresponding driving assemblies and between the fixed cross beam and the corresponding driving assemblies. The clamping mechanism is fixedly connected to one side of the driving assembly. According to the rotatable clamping assembly, a proper clamp assembly can be conveniently selected according to the outline of a belt, so that better clamping and fixing are facilitated, and meanwhile, the clamp assembly can be conveniently replaced after being abraded or damaged.
Owner:BEIJING CHINA COAL COAL WASHING TECH CO LTD

Overhanging type formwork supporting device for high-altitude large-span overhanging balcony of high-rise building

The utility model discloses a high-rise building high-altitude large-span overhanging balcony overhanging type formwork supporting device which comprises a balcony body arranged on a first floor slab and a fixing beam arranged on a second floor slab, and the end of the fixing beam is fixedly connected with the second floor slab through a plurality of sets of first fastening bolts. A supporting beam is slidably connected to the fixing beam, a plurality of sets of scaffolds are fixed to the supporting beam, abutting plates are arranged at the tops of the scaffolds, and supporting formworks used for laying the balcony body are arranged on the abutting plates. Through the arrangement of the fixed beam and the supporting beam, the supporting beam can slide relative to the fixed beam, the length of the supporting beam is adjusted, when a wider balcony is constructed, the supporting width is increased by lengthening the length of the supporting beam, the requirement for wider balcony construction is met, and convenience and practicability are achieved.
Owner:CHINA CONSTR FIFTH ENG DIV CORP LTD

Connecting Structure Applicable to Top of Outdoor Gazebo and Application Thereof

A connecting structure applicable to a top of an outdoor gazebo, which comprises a fixed beam and a plate beam fix on the top of the gazebo, wherein the fixed beam is provided with a connecting pipe beam used for connecting the plate beam; a cylindrical beam is arranged at the edge of the plate beam; and the cylindrical beam is inserted into the connecting pipe beam, so that a detachable connection is formed between the fixed beam beam and the plate beam.
Owner:JIANGSU SHENGBANG FURNITURE MANUFACTURING CO LTD

Longitudinal cutting machine device for cylinder

The utility model discloses a cylinder longitudinal cutting machine device which comprises a machine base panel and a machine base frame, the machine base frame is connected to the lower portion of the machine base panel and used for supporting the machine base panel, and the cylinder longitudinal cutting machine device is characterized in that a cutting machine is detachably connected to the machine base panel, two sets of clamping grooves are formed in the lower portion of the machine base panel, and the two sets of clamping grooves are formed in the machine base panel. The bottom ends of the clamping grooves are provided with supporting stand columns respectively, the supporting stand columns are connected and fixed to the machine base frame through height-adjustable clamping groove fixing beams, and a waste water and dust collecting bin is arranged between the clamping grooves and used for collecting waste water and dust in the cutting process. The vertical adjustment of the clamping groove is realized through the height-adjustable clamping groove fixing beam, so that plates or steel can be fixed at different heights, and the cutting material fixing device can be suitable for fixing cutting materials with different sizes. Cutting materials are fixed through the clamping grooves, and the problems that in the prior art, danger exists and efficiency is low due to the fact that a machine is manually held by hand are solved.
Owner:廖凤鸣

Honeycomb blind with underlying driving device

The utility model discloses a honeycomb curtain with an underlying driving device, which comprises a fixed beam, a movable beam, curtain cloth arranged between the fixed beam and the movable beam and a winding rope arranged in the curtain cloth in a penetrating manner, the driving device and a rope winder are arranged in the movable beam, and the output end of the driving device is connected with the rope winder; a leveling device is arranged on the movable beam, one end of the winding rope is wound on the rope winder, the other end of the winding rope is connected with the leveling device after bypassing the fixed beam, and the leveling device is used for adjusting the balance of the movable beam. The battery, the driving device and the rope winder are all arranged in the movable beam, later maintenance is facilitated, the leveling device is arranged, and when the movable beam inclines, the balance degree of the movable beam can be adjusted.
Owner:CHANGZHOU YOOKSMART INNOVATION CO LTD

A variable beam transport for a cyclotron

The utility model discloses a kind of variable beam binding devices for cyclotron, install in beam pipeline, realize the size and shape of remote online hard constraint beam envelope by the variable adjustment of inner hole, involve variable beam binding technical field, including vacuum connection flange, fixed support, transmission gear, rotary disc, gear disc, blade combination, the blade combination, vacuum connection flange are connected with vacuum pipeline;Fixed support, the fixed support is set to vacuum connection flange side edge, and the fixed support is used to fix beam binding blade, motor, transmission gear, rotary disc;Gear disc is connected with the fixed support, and one side of the beam binding blade combination is connected;Rotary disc.The utility model can adjust multiple beam binding aperture, without disassembling when adjusting, save vacuum extraction and replacement time.Structure is simple, and cost is low, and implementability is high.Dismounting is reduced simultaneously, and the time of maximum degree operation personnel contact dose can be operated.
Owner:GUODIAN NUCLEAR POWER INNOVATION (WUXI) TECH CO LTD

Sealing machine vacuum pump station group and control system

The invention discloses a sealing machine vacuum pump station group and a control system, comprising a pump station box, a sound absorption box top mounted on the top of the pump station box, a box inner bin formed in the pump station box, side fixed beams mounted on the front and rear inner walls of the pump station box, an air supply confluence conduit arranged in front of the side fixed beams, an even number of vertical frame beam plates fixed on the side fixed beams, and a pump group mounted in the box inner bin, a wire box frame is installed on the inner surface of the box inner bin, an even number of air storage tanks are arranged beside the pump set, and a controller is arranged beside the pump set. Unified regulation and control of a pump set are completed through a built-in system of the controller, the system confirms to start a corresponding number of vacuumizing pumps in a pump station through the compressed air storage amount according to the use number of external sealing machines so as to supply air to an air storage tank of the pump station, however, the corresponding number of vacuumizing pumps are correspondingly stopped due to the fact that the use number of the sealing machines is reduced, and the air supply efficiency is improved. And meanwhile, matched operation of the sealing machine can be met, the problem of energy consumption increase caused by restarting of the sealing machine when the sealing machine stops is indirectly solved, and the electric energy consumption is saved.
Owner:FUJIAN SUNNER DEV

Sealed battery box body and processing method thereof

The invention discloses a sealed battery box. The sealed battery box comprises a handle, a handle fixing beam, a box body, a front panel and a rear panel, the box body is formed by bending and welding an integrally-formed section through a metal plate, frames are arranged on the two sides of the box body, threaded holes and connecting structures are arranged on the frames, the connecting structures are arranged at the bending positions of the section, each connecting structure comprises a first bending block and a second bending block, the bending blocks are in an arc shape, and the first bending blocks and the second bending blocks are connected through bolts. The thickness of the bending blocks is one half of that of the frame of the box body, the two bending blocks are distributed in a staggered mode, the positions of the two bending blocks are overlapped after bending, the outer circular arcs coincide with the bending circular arc of the box body, and the structure can assist in bending, reduce the welding workload, reduce the welding cost, improve the assembly precision and reduce the assembly error at the same time.
Owner:ZHEJIANG JINGJIAXIN TECHNOLOGY CO LTD

Digital formwork integrated system

The utility model discloses a digital formwork integrated system, which belongs to the technical field of building engineering construction and comprises a multifunctional ejector rod, a beam side vertical rod, a cross beam supporting buckle, a beam bottom cross beam and a connecting cross rod. The multifunctional ejector rod is provided with an early-dismantling supporting buckle and an ejector rod cross arm, and the length of the ejector rod cross arm is set according to different beam widths. The beam side vertical rods are located on one side or two sides of the multifunctional ejector rod and connected with the multifunctional ejector rod through the connecting transverse rods. The beam supporting buckles are installed on the beam side vertical rods and used for being matched with the early-dismantling supporting buckles to place the beam bottom beam. And the beam bottom cross beam is a square or rectangular steel-wood keel and is used for fixing the beam bottom template. According to the beam formwork supporting system, the under-beam ejector rods and a room frame body are set up for synchronous construction, ejector rod cross arms are selected according to different beam widths, the universality of the beam formwork supporting system is improved, and labor and materials are saved; the beam side vertical rods are provided with the beam supporting buckles, the beam bottom beam is placed in cooperation with the early-dismantling supporting buckles on the multifunctional ejector rods, nails can be nailed on the beam bottom beam conveniently, meanwhile, the stress face is enlarged, and stability is improved.
Owner:HEBEI YIDINGXING TECH CO LTD

Bearing axial loading test device

A bearing axial loading test device comprises a driving motor, an accompanying test bearing seat, an auxiliary bearing seat and an axial loading mechanism which are sequentially arranged from left to right. According to the utility model, the steps of the stepped shaft are adopted to position and place the bearing to be tested, the position precision and the dismounting efficiency of the bearing to be tested are improved, and the steps with different diameters are utilized to place the bearings to be tested with different models, so that the test range of the bearing axial loading test device is expanded; the one-way stepped shaft and the two-way stepped shaft form a clamped beam structure by using the accompanying test bearing seat and the auxiliary bearing seat, so that the stability of the stepped shafts under high-speed rotation is improved, the influence of high-speed rotation on the axial load of the to-be-tested bearing is avoided, and the test precision is improved; the separable roller bearing is adopted to reduce the resistance of the stepped shaft during axial movement, the placement cavity is defined by the accompanying test shaft and the auxiliary bearing to store lubricating oil, the lubricating oil is utilized to reduce the resistance of the bearing during relative movement of the inner ring and the outer ring, and the precision of the axial load output to the bearing to be tested is improved.
Owner:SUZHOU WEIBO TESTING INSTR CO LTD

Electric arc additive and subtractive composite fixed beam single gantry structure

The arc additive and subtractive composite fixed-beam single-gantry structure comprises a lathe bed and a cross beam, the cross beam is arranged on the lathe bed in a sliding mode, the sliding direction of the cross beam is orthogonal to the length direction of the cross beam, and an additive module and a subtractive module are arranged on the cross beam in a sliding mode; the material adding module comprises a material adding slide carriage arranged on the cross beam in a sliding mode, a six-axis robot is arranged on the material adding slide carriage in a lifting mode, and a welding gun is arranged at the output end of the six-axis robot. The material reducing module comprises a material reducing slide carriage arranged on the cross beam in a sliding mode, and an electric spindle used for installing a material reducing tool is arranged on the material reducing slide carriage in a lifting mode. The additive module and the subtractive module are integrated on the same cross beam and share a high-precision cross beam guide rail, so that repeated positioning errors caused by a lathe bed and a gantry body of a traditional multi-gantry type structure are effectively avoided, and the manufacturing precision and stability are remarkably improved; and in addition, seamless connection or rapid switching of the material increasing procedure and the material decreasing procedure on the same station is achieved, the manufacturing process is simplified, and the overall manufacturing quality is improved.
Owner:WUHAN HEAVY MACHINE TOOL GRP

Device for ice load measurement and ice-induced vibration suppression and ocean structure

The invention provides a device for ice load measurement and ice-induced vibration suppression and an ocean structure. The device for ice load measurement and ice-induced vibration suppression is characterized by comprising a fixed strut beam structure (2) which is arranged on the outer surface of an upright or nearly upright ocean structure and is axially parallel to the ocean structure, and a steel plate (1) covering the range of a tidal range zone is arranged on the outer side of the strut beam structure (2) in a sleeving mode. And a stress measuring device (3) is mounted on the inner side of the strut beam structure (2). The fixed strut beams and the steel plates are installed on the outer surface of the ocean structure, the contact form of sea ice and the structure is changed, the crushing mechanism of the sea ice is disturbed, the energy of the sea ice is absorbed, the vibration amplitude is reduced, meanwhile, real-time monitoring of the ice load is achieved, frequency locking vibration is eliminated, and the safety and stability of the structure are ensured.
Owner:POWERCHINA HUADONG ENG CORP LTD +1

Multi-angle enhanced contact membrane bioreactor

The invention provides a multi-angle enhanced contact membrane bioreactor which comprises a rotary swing frame, a membrane fan, an MABR membrane assembly, a rotary connecting shaft, an aeration assembly, a driving device and a suspension fixing beam arranged on a membrane pool, the rotary swing frame is movably connected with the suspension fixing beam through the rotary connecting shaft, the MABR membrane assembly is installed on the rotary swing frame, and the aeration assembly is installed on the rotary swing frame. The driving device drives the MABR membrane component and the rotary swinging frame to rotate and swing in a reciprocating manner around the axis of the rotary connecting shaft; the angles of the MABR membrane assembly, the sewage flowing direction, the sludge flowing direction and the aeration flow direction are circularly changed in the swinging process. The device is simple in structural design and convenient and fast to disassemble and maintain; the adjustment flexibility of the motion structure is high, corollary equipment is few, corollary equipment such as folded plates or partition plates for ensuring full contact between the membrane and water flow does not need to be added, dead zones are reduced, and the manufacturing cost is low; and the main swing connecting structure is above the water surface, so that the service life is long.
Owner:ZHEJIANG CREATION ENVIRONMENT TECH +1

A film covering mechanism for a film covering rice transplanter capable of adaptively adjusting the transplanting depth

The present invention discloses a film covering mechanism for a mulching rice transplanter capable of adaptively adjusting the transplanting depth, comprising a rice transplanter body, a film covering mechanism for covering the rice transplanter body mounted below a rice transplanter crossbeam at the rear of the rice transplanter body, the film covering mechanism comprising a film covering frame with adjustable height above the ground, a film pressing mechanism disposed behind the film covering frame, the film pressing mechanism comprising a floating rod mounted on the bottom of a fixed beam at the rear of the rice transplanter crossbeam via a mounting mechanism, the floating rod being connected to a base plate via a film pressing roller bracket, the front end of the base plate being movably connected to a film pressing roller via a connecting frame, the middle portion of the base plate being connected to a hydraulic system switch of a hydraulic profiling system on the rice transplanter body via a pull rope assembly. The present invention has a reasonable structural design, can well perform the film covering and pressing functions during mulching and transplanting operations, and can also replace a floating plate to connect to the hydraulic profiling system of the rice transplanter, so that the present invention has the function of adaptively adjusting the transplanting depth, reduces manpower and working time, and improves the efficiency of mulching and transplanting operations.
Owner:ANHUI AGRICULTURAL UNIVERSITY

Intelligent multidirectional glue conveying system

The invention relates to an intelligent multidirectional glue conveying system which comprises a conveyor, a rotating device and universal wheels are arranged on the two sides of the bottom of a rack respectively, a plurality of bottom plates are arranged on a conveyor belt at intervals, sealing rings and positioning rings are arranged on the bottom plates, a fixed beam is arranged above the conveyor, a linear motor is arranged on the fixed beam, and the linear motor is connected with a first telescopic part. A controller and a cylinder body are arranged on the outer wall of the clock cover, a piston is arranged in the cylinder body, an air cylinder is connected between the piston and the cylinder body, an air pressure sensor is arranged on the inner wall of the clock cover, outer covers are connected to the opposite inner walls of the clock cover through second telescopic pieces, the outer covers are matched with the plastic bottle structure, and third telescopic pieces are arranged on the opposite inner walls of the clock cover. A pressure sensor is arranged at the telescopic end of the third telescopic part. According to the invention, sealing performance inspection and solidification condition inspection can be carried out on packaged glue products in the conveying process, bad products can be automatically removed after inspection, the detection efficiency is high, the detection is convenient, and multidirectional conveying can be realized during inspection.
Owner:CAPTON AUTOMATION EQUIP (GUANGZHOU) CO LTD

A tooling and method for straightening a shell casting

This invention relates to the field of casting technology, and more particularly to a straightening fixture and method for shell castings. The straightening fixture includes a base plate, a movable beam, a fixed beam, a column block, and four columns. The movable beam and fixed beam are arranged in a cross shape and inserted into the cross-shaped mounting holes of the column block, with the movable beam located below the fixed beam. Both ends of the movable beam are horizontally inserted into the upper parts of two of the columns. The movable beam slides in contact with the columns and column block. Both ends of the fixed beam are horizontally inserted into the upper parts of the other two columns. The columns are detachably connected to the base plate. A shim is inserted between the top surface of the fixed beam and the upper wall of the cross-shaped mounting hole of the column block; the shim is composed of multiple shims of different thicknesses stacked together. Two protrusions of different thicknesses are spaced apart on the lower surface of the movable beam; the thickness of each protrusion is equal to the thickness of one of the shims, or equal to the sum of the thicknesses of two of the shims. The straightening amount can be precisely controlled by removing the shims.
Owner:GUIZHOU ANJI AVIATION PRECISION CASTING

A wireless communication system that uses a relay device as an extended antenna for a terminal device, a terminal device, a control method, and a program.

The terminal device must properly use the relay device as an extended antenna. [Solution] A terminal device capable of forming multiple fixed beams holds first information that identifies the relationship between the number of beams used and the probability of maintaining communication quality in response to changes in the positional relationship between the terminal device and each of the multiple relay devices capable of relaying communication between the terminal device and the base station device to which the terminal device is connected. Second information is obtained regarding changes in the positional relationship between each of the multiple relay devices and the terminal device. Based on the first information, the second information, and the number of beams that can be used simultaneously from the multiple beams, the terminal device identifies one or more relay devices to be used and the number of beams to be used in communication using each of those one or more relay devices. A signal is then transmitted to the base station device using the identified number of beams toward the identified one or more relay devices.
Owner:KDDI CORP

Profile structure for erecting outdoor awning

The utility model discloses a profile structure for erecting an outdoor awning, which comprises a connecting piece provided with at least one hook part; the fixed beam is provided with a slot matched with the hook part; the connecting piece is provided with at least two supporting plates; the hook part of the connecting piece is matched with the slot of the fixed beam, and the at least two supporting plates are combined, so that the stability of the whole structure is obviously improved. Due to the clamping design of the hook part and the slot, stress is uniformly distributed, and the defect that a single stress point of a traditional screw is easy to loosen is overcome; the double supporting plates are arranged to form double supporting, the bearing pressure is further dispersed, deformation or cracking of the aluminum material caused by single-point stress is effectively prevented, the bearing capacity of the support is greatly improved, and the service life of the support is greatly prolonged.
Owner:JIANGSU WEILUN FIRE TECHNOLOGY CO LTD

Electric curtain

The utility model discloses an electric curtain which comprises a fixed beam, a first movable beam and a second movable beam which are sequentially arranged, a first curtain is arranged between the fixed beam and the first movable beam, a second curtain is arranged between the first movable beam and the second movable beam, and driving devices are arranged on the first movable beam and the second movable beam. The middle of a pull rope of the first curtain bypasses the two rear ends of the fixed beam and is arranged in the first movable beam, and the middle of a pull rope of the second curtain bypasses the two rear ends of the first movable beam and is arranged in the second movable beam. When the driving device drives the pull rope of the first curtain to operate, the first moving beam moves relative to the fixed beam, and when the driving device drives the pull rope of the second curtain to operate, the second moving beam moves relative to the first moving beam. The battery and the driving devices are arranged in the movable beam, later maintenance is facilitated, the first curtain and the second curtain are controlled through the two driving devices respectively, and more accurate control is achieved.
Owner:CHANGZHOU YOOKSMART INNOVATION CO LTD

Multi-beam multi-band protected communication system

Multi-beam, multi-band, multi-function, non-scanning, non-switching system which can simultaneously be applied for communication, navigation, control, surveillance, and data link. Antenna system with multiple overlap fixed beams provides simultaneous full / hemi-sphere covering without scanning or switching beams and provides higher data rates, reliability, and speed of communication. Automatic gain control and direction adjustment in each channel allow to use system in harsh urban or mountain conditions even on motion payload. Antenna systems coupled with transmitters and receiver chains arranged as transceiver modules can be distributed on the ground, airborne, sea carrier / satellite, or swarm of carriers or satellites and provide better protection against spoofing and EMP.
Owner:MOLCHANOV PAVLO ANATOLIYOVICH

Welding device and using method thereof

The invention discloses a welding device and a using method thereof. The welding device comprises a main body frame, a rotating beam, a fixed beam, a first welding mechanism, a second welding mechanism, a rotating mechanism and a welding platform. The main body frame is provided with a supporting part, the supporting part is provided with a first rotating part, the rotating beam is hollow and is rotationally connected with the supporting part on the main body frame through the first rotating part, the fixed beam is rotationally connected with the rotating beam through a second rotating part, the welding platform is connected with the rotating beam through a first connecting part, and the first welding mechanism is connected with the fixed beam; the second welding mechanism is arranged on the upper side of the main body frame, the rotation driving mechanism is arranged on the main body frame and connected with the rotating beam, the welding platform is driven to rotate through the rotating beam at a controllable angular speed, an overweight, low-gravity or weightlessness environment is simulated, and the welding mechanism is automatically started and stopped in a specific rotating angle interval through an angle triggering mechanism. And the welding operation of the welded workpieces in different gravity states is realized.
Owner:WUHAN UNIV OF TECH

Temporary support equipment for subway civil construction

The utility model relates to the field of subway civil engineering technology, especially a kind of temporary support equipment for subway civil engineering construction. Including two groups of main support plate and several vice support plates, two groups of main support plate are fixedly connected through upper and lower two fixed beams, several vice support plates are arranged between two groups of main support plate, and are slidably connected with fixed beam, folding assembly is arranged between adjacent support plate, two groups of fixed plates are fixedly arranged in main support plate side, fixed plate bottom is fixedly provided with support base, and support assembly is also provided in the side of main support plate close to support base. The utility model is closely attached to the side wall of tunnel by main support plate and several vice support plates, the inner wall of tunnel on the rear side of adjacent two vice support plates is exposed by vice support plate sliding, so that wall behind vice support plate is anchored rod construction, so that local tunnel inner wall is constructed.
Owner:TAIYUAN RAIL TRANSIT LINE 1 CONSTR & OPERATION CO LTD

A combi-beam microphone

The application provides a combined beam microphone, belonging to the field of piezoelectric microphones, which comprises a substrate, a circular recess is formed on the upper surface of the substrate, a cavity is formed in the recess, and the cavity is located directly below the recess; a center diaphragm is arranged in the recess and located at the center of the recess; transition beams are arranged at intervals around the center diaphragm and connected to the center diaphragm, and first gaps are formed between adjacent transition beams; fixed beams are arranged at intervals around the center diaphragm, and the two ends of the fixed beams along the radial direction of the recess are connected to the inner wall of the recess and the transition beams respectively; cantilever beams are arranged between adjacent fixed beams and connected to the transition beams, and second gaps are formed between the cantilever beams, the inner wall of the recess and the fixed beams. By changing the structure of the beams in the microphone, increasing the number of fixed beams and the combination form between the beams, increasing the area of the high stress concentration region, and combining the reasonable layout of the center diaphragm, the transition beams, the fixed beams and the cantilever beams, the stress distribution is more uniform, and the effective utilization rate of the diaphragm area is improved.
Owner:WUHAN UNIV +1

Packaging chip pin controllable laser pin cutting conveying system and method

The application discloses a kind of encapsulation chip pin controllable laser cutting pin conveying system and method, it is related to laser cutting pin field, including fixed pin device and laser cutting pin device, fixed pin device includes fixed pin base plate and detachable fixed pin plate, fixed pin base plate is fixedly arranged, multiple sets of positioning components are linearly arranged on fixed pin base plate, positioning component includes two parallelly arranged positioning slots, positioning slot is through along the thickness direction of fixed pin base plate Setting, multiple detachable fixed pin plates are overlapped on fixed pin base plate, multiple strip grooves are through on detachable fixed pin plate, multiple strip grooves are coincident with multiple positioning slots, laser cutting pin device includes fixed beam and laser cutting machine, laser seat is slidably arranged on fixed beam, laser cutting machine is installed on laser seat, the pin of component on both sides respectively from two positioning slots and strip groove, so that the pin of component is located in the cutting range of laser cutting machine, different cutting angle requirements can be met, and automatic cutting angle processing is realized.
Owner:SICHUAN HONGZHI YUANDA TECH CO LTD