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601results about How to "Prevent crushing" patented technology

Workpiece limiting device and limiting method for intelligent production line of railway vehicle

The invention relates to the technical field of railway vehicle production, and provides a workpiece limiting device and method for an intelligent railway vehicle production line. The workpiece limiting device comprises a rack, a conveying belt, a feeding mechanism, a discharging mechanism, a synchronous connecting rod and a separating mechanism; the feeding mechanism comprises a feeding plate, a supporting shaft, an abutting plate and a first swing rod. The feeding mechanism is used for limiting input workpieces. The discharging mechanism is arranged at the tail end of the conveying belt in the transmission direction, the discharging mechanism comprises a circular shaft, a second swing rod and a clamping plate, and the discharging mechanism is used for limiting the output workpieces; the synchronous connecting rod is used for connecting the supporting shaft and the circular shaft; the separating mechanism is arranged on the side face of the conveying belt, comprises a first vertical shaft, a second vertical shaft and a separating fork and is used for separating workpieces on the conveying belt; the conveying stability of the workpieces on the conveying belt is improved, and the conveying efficiency is improved.
Owner:中建五局安装工程有限公司

Top cover wire mounting equipment

The invention belongs to the technical field of motor assembling equipment, and particularly relates to top cover wire assembling equipment which comprises a rack. The material moving device is mounted on the rack and is provided with a plurality of stations; the positioning device is mounted on the material moving device; the wire frame device is mounted on the material moving device; the jacking device is mounted on the rack or the material moving device; the locking device is mounted on the rack; the discharging device is installed on the rack and located beside the material moving device. A top cover and an electric wire are positioned through the positioning device and the wire frame device, the positioned top cover and the positioned electric wire are transferred to the locking device through the material transferring device, the electric wire is straightened through the jacking device, a nut is tightened to the top cover through the locking device, and installation of the electric wire is completed. The blanking of the product is realized through the blanking device; a mechanical production mode is adopted to replace traditional manual nut tightening operation, the production efficiency is improved, manpower and time are saved, the nut tightening quality is ensured, and the product percent of pass is increased.
Owner:台州智惠自动化科技有限公司

High-safety battery thermal management system giving consideration to high-temperature heat dissipation, low-temperature heating and thermal spread suppression

The invention discloses a high-safety battery heat management system with high-temperature heat dissipation, low-temperature heating and heat spread suppression considered. The high-safety battery heat management system comprises a power battery pack and a heat management system, the power battery pack comprises a battery pack consisting of a plurality of square battery cells and a large-scale battery module formed by connecting the battery packs in parallel; a plurality of battery cells are connected in series in each battery pack, the battery packs are vertically arranged, the large-scale battery module is formed by horizontally arranging the battery packs, and each battery pack comprises equal or unequal battery cells; the thermal management system comprises a flexible flame-retardant phase-change material, a liquid cooling plate, a heating film and aerogel; a part of side surfaces between the battery cells are uniformly filled with a flexible flame-retardant phase-change material, the other side surfaces are wrapped by aerogel, the bottoms of the battery cells are connected with an integrated unit of a heating film and a liquid cooling plate, and the heating film is positioned at the positions of the battery cells for heating; the battery pack is cooled through water cooling and phase change latent heat; heating the battery pack through a heating film at the bottom of the battery cell; and the thermal runaway of the battery is inhibited through the combination of the flexible flame-retardant phase-change material and the aerogel.
Owner:DONGGUAN GUI XIANG INSULATION MATERIAL CO LTD

LiAlO2 coated lithium-rich manganese-based material as well as preparation method and application thereof

The invention belongs to the field of battery materials, and particularly relates to a LiAlO2 coated lithium-rich manganese-based material as well as a preparation method and application thereof. The invention provides a preparation method of a LiAlO2 coated lithium-rich manganese-based material, which comprises the following steps: (1) mixing a precursor and a first lithium salt, and carrying out first sintering to obtain a first sintered material; (2) carrying out acid pickling on the first sintering material, mixing the first sintering material with an aluminum source and a second lithium salt, and carrying out second sintering to obtain a LiAlO2 coated lithium-rich manganese-based material; and carrying out acid pickling by adopting an organic acid solution. The LiAlO2 coated lithium-rich manganese-based material prepared by the preparation method disclosed by the invention is low in specific surface area, high in first efficiency and good in cycle performance.
Owner:GEM WUXI ENERGY MATERIAL CO LTD

Breeding tail water treatment method and system of rice straw modified biochar

The invention belongs to the technical field of data processing, and provides a breeding tail water treatment method and system of rice straw modified biochar, and the method specifically comprises the following steps: firstly, arranging a flow sensor at a water inlet of a fluidized bed, reading the water inlet flow, and obtaining the aeration rate from an aeration device of the fluidized bed in real time; then, when the change rate of the water inlet flow exceeds a threshold value, self-adaptive aeration rate regulation intervention is carried out; wherein the self-adaptive aeration rate regulation intervention process comprises the following steps: constructing an aeration adaptive model through the water inlet flow and the aeration rate to obtain an adaptive pairing amount; and controlling the aeration rate according to the adaptive pairing amount. The occurrence risk of collapse of the fluidizing medium particles caused by water inlet flow change and aeration rate transition during culture tail water treatment of the fluidizing medium particles constructed by the rice straw modified biochar is dynamically quantified; fluidizing medium particles constructed by the rice straw modified charcoal are prevented from being crushed due to excessive aeration or sharp increase of water flow, and the operation quality and the service life of the fluidized bed are improved.
Owner:INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI

Wafer bonding jig and bonding equipment

The utility model relates to the technical field of semiconductor manufacturing, and provides a wafer bonding jig and bonding equipment, and the wafer bonding jig comprises a jig body and an isolation unit. The jig body is provided with a bearing area; the isolation unit comprises an isolation base and an isolation piece; the isolation piece is arranged on the isolation base, the isolation base is movably arranged on the isolation base in the direction parallel to the bearing area, the isolation base is provided with a matching face, and the matching face faces the bearing area in the direction parallel to the bearing area. According to the utility model, the structure of the isolation unit is improved, so that the pressing head is linked with the isolation piece in the downward pressing process, and the downward pressing process of the pressing head and the pulling-out process of the isolation piece are kept synchronous.
Owner:SHANGHAI OPTICAL KEY SEMICON EQUIP CO LTD

Wafer defect detection device and detection method

The invention provides a wafer defect detection device and a wafer defect detection method, and belongs to the technical field of wafers. The mounting seat can be used for supporting the whole equipment; two clamping mechanisms are arranged in the mounting base, one clamping mechanism comprises a first motor, a gear, a sliding base, a rack, a sliding rod, a sliding frame, a second motor, a butt joint and a clamping block, the first motor is fixedly connected to the lower inner wall of the mounting base and can be used for driving the gear to rotate, and the gear is fixedly connected to the output end of the first motor and can be used for driving the butt joint to rotate; the light receiving pot can be used for driving the two racks to move relative to each other, the penetrating lamp is moved to the upper surface of the wafer, the penetrating lamp is operated to irradiate the wafer, and the light receiving pot receives a reflected light signal. And a photoelectric converter in the light receiving pot converts the reflected light signal into an electric signal and amplifies and filters the electric signal so as to improve the signal-to-noise ratio, and whether the wafer has a crack or not and the position of the crack can be judged by analyzing the intensity and distribution of the received reflected light signal.
Owner:WUXI UNIV

Horizontal splicing and pressing system and method for long-specification sand core mold

The invention discloses a horizontal splicing and pressing system and method for a long-specification sand core mold, and relates to the technical field of rocket engine shell forming and manufacturing. The system comprises a pressing mechanism walking track, a core shaft fixing and supporting mechanism, a core shaft supporting and lifting mechanism, a pressing mechanism, a sand cake supporting sleeve and the like. And through a horizontal splicing mode, the height limitation of a traditional vertical splicing plant is overcome, and the sand core mold sectional splicing device is suitable for sectional splicing of large-specification and long-size sand core molds. The pressing mechanism is provided with a pressure sensor, the pressing force between the sand cakes can be monitored in real time, and the phenomenon that the end faces of the sand cakes are crushed due to too large pressing force is avoided. According to the method, by means of the system, horizontal splicing and pressing of the sand core mold are achieved, and the operation safety and the production efficiency are improved.
Owner:HUBEI SANJIANG HANGTIAN JIANGBEI MASCH ENG CO LTD

Transformer wiring device

The present invention relates to the technical field of electric tools, and in particular to a transformer wiring device, comprising a wiring device body provided with a fastening mechanism and a wiring mechanism, the fastening mechanism comprising a tensioning bolt, a conical crimping sleeve, and a conical tightening hole provided in the wiring device body, the crimping sleeve is coaxially built into the tightening hole, the conical crimping sleeve is in contact with the conical tightening hole and both have their small diameter ends facing upward, the conical side wall at the bottom of the crimping sleeve is surrounded by at least two elastic crimping sheets, the inner hole of the crimping sleeve is a screw hole, one end of the tensioning bolt is hung outside the wiring device body through a screw head, and the other end is threadedly connected to the upper part of the crimping sleeve, and the lower part of the crimping sleeve is threadedly connected to the transformer wiring stud; the transformer wiring device of the present invention is firmly connected to the transformer wiring stud, is easy to load and unload, and occupies little space for loading and unloading.
Owner:GUANGZHOU PANYU CABLE WORKS

Subway construction supporting device

The utility model discloses a metro construction supporting device, which aims to solve the problems that a construction supporting device in the prior art is easy to break due to poor damping effect, single in function, incapable of meeting more construction requirements and the like, and comprises a plurality of supporting rods, and a supporting mechanism is arranged above the supporting rods. A lighting lamp is arranged on the lower portion of the supporting mechanism, damping devices are arranged between the supporting rods and the supporting mechanism, reflective strips are arranged on the side walls of the supporting rods, reinforcing mechanisms used for supporting the supporting mechanism are arranged on the upper portions of the supporting rods, fixing assemblies are arranged on the lower portions of the supporting rods, and anti-vibration pads are arranged between the supporting rods and the corresponding fixing assemblies. The protective device is diversified in function and is provided with the unique damping device, the arranged illuminating lamp facilitates construction of workers, the switch assembly can control the illuminating lamp, the fixed support further reinforces the protective mechanism, the reflective strip reminds the workers to prevent collision, and the anti-vibration pad further plays a role in damping the supporting rod; the damping device can conduct damping on the supporting mechanism and also can clean the illuminating lamp.
Owner:CHINA CONSTR SEVENTH ENG DIVISION CORP LTD +2

Intelligent body position device and body position regulation and control management system

The invention provides an intelligent body position device and a body position regulation and control management system, and belongs to the technical field of medical equipment. The intelligent body position device comprises an air bag array, a camera shooting array and a transparent protection layer. The camera arrays and the air bag arrays are arranged in a staggered mode. The camera array is used for acquiring skin state information of a pressed part of a patient. The transparent protective layer wraps the air bag array and the camera shooting array and is used for making contact with the skin of a patient. The air bag array has the effects of supporting, buffering, damping and view field adjusting, and the camera shooting array dispersed in the air bag array can accurately shoot the view field of the gap space between the air bags. When the transparent protection layer is in contact with the skin of the patient, the skin state information of the pressed part of the patient can be displayed in the shooting view of the camera array. Therefore, the camera array can obtain the skin state information of the patient in real time to obtain the pressure condition of the patient, and the problem that the pressure condition of the patient cannot be obtained in the prior art is solved.
Owner:TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH +1

Drainage tube fixer

The present invention relates to the field of drainage tube fixation technology, and in particular to a drainage tube fixer, comprising a breathable patch, the breathable patch is arranged on the inner side of the anterior superior iliac spine of a human body, a patch is fixedly installed on the top of the breathable patch, a first bandage and a second bandage are arranged on the top of the patch, the first bandage and the second bandage are cross-connected, a sliding mechanism is arranged on the top of the patch, a fixing mechanism is arranged on the top of the breathable patch, and a fixing cylinder is arranged below the first bandage and the second bandage. The advantages are: the breathable patch is arranged on the inner side of the anterior superior iliac spine of a human body, the displacement of the fixer during use is reduced, and personalized adjustments can be made to meet the needs of patients of different body shapes, the drainage tube is avoided from being squeezed by fat, and the stability of the fixer is enhanced. The drainage tube passes through multiple through holes and is fixed by the first bandage, the second bandage and the fixing cylinder in multiple layers, which effectively prevents the displacement or falling off of the drainage tube, thereby enhancing the fixing effect.
Owner:CHANGZHOU MATERNAL & CHILD HEALTH CARE HOSPITAL

Negative electrode material, preparation method thereof and lithium ion battery

The invention relates to a negative electrode material and a preparation method thereof, and a lithium ion battery, the negative electrode material comprises a porous carbonaceous material and a silicon material, the negative electrode material has a first region located in the central region in the porous carbonaceous material, a second region distributed on the surface of the first region, and a third region distributed on the surface of the second region, the porous carbonaceous material located in the first area has first pores, the porous carbonaceous material located in the second area has second pores, the porous carbonaceous material located in the third area has third pores, at least part of the first pores are communicated with the second pores, at least part of the second pores are communicated with the third pores, and the third pores are communicated with the third pores. At least part of the third pores are communicated with the surface of the negative electrode material, the silicon material is distributed in at least one of the first pores, the second pores and the third pores, the pore diameter of the first pores is 0.1-2.2 nm, the pore diameter of the second pores is 1.8-5 nm, the pore diameter of the third pores is 3-60 nm, and the probability entropy H of the pores in the porous carbonaceous material meets 0.96 gt; hgt; and 0.70%.
Owner:BTR NEW MATERIAL GRP CO LTD +1

A bonding device for processing photovoltaic solar panels

The present invention discloses a bonding device for photovoltaic solar panel processing, and relates to the technical field of solar photovoltaic panels. The present invention includes a workbench, and a pressing device is arranged on the top surface of the workbench; the pressing device includes a lifting cylinder, a pressure cover, a distance adjusting block and a bolt, the lifting cylinder is fixed to the bottom surface of the inner wall of the operation chamber on the top surface of the workbench, the pressure cover is fixed to the telescopic end, and rectangular grooves are provided at both ends of the bottom surface of the pressure cover, and the distance adjusting block is slidably installed on the inner wall of the rectangular groove. The present invention makes the lifting cylinder, the pressure cover, the distance adjusting block and the bolt cooperate through the setting of the pressing device, and the bolt is adjusted to control the protruding distance of the distance adjusting block by using the bolt, and the downward pressing contact surface of the pressure cover is controlled to be displaced as needed, and when the battery cell can be pasted to the back plate, the downward pressing contact surface of the pressure cover is controlled to rise as much as possible to avoid damage and breakage of the battery cell during the downward pressing process, thereby improving the yield rate.
Owner:YIWU HUALONG NEW MATERIALS TECHNOLOGY CO LTD

Detachable preassembled intraocular lens implantation system

The invention discloses a detachable preassembled intraocular lens implanting system which comprises an implanting device and a detachable leading-in head assembly, the implanting device comprises a sleeve, a push rod, a push needle, a clamping cap and a damping ring, the push needle is arranged in the sleeve, the tail of the push needle is in butt joint with the push rod, the push needle, the push rod and the sleeve are connected through the clamping cap, and the damping ring is arranged in the sleeve. The damping ring is arranged between the push needle and the sleeve; the detachable leading-in head assembly comprises a leading-in head, a pre-installing bin and an artificial lens, the risk that the lens is polluted and damaged can be effectively reduced, the loop clamping can be prevented, it can be guaranteed that the lens is not damaged, the injection speed is more uniform, injection is more stable, injection resistance is smaller, injection is smoother, and the injection hand feeling is better; the application prospect is wide, and popularization and application are facilitated.
Owner:TIANJIN SHI JI KANG TAI BIOMEDICAL ENG CO LTD

Outer pipe assembly

ActiveCN222559068Uprevent fallingRealize temperature monitoringTemperature monitoringMechanical engineering
The utility model discloses an outer pipe assembly which comprises an outer pipe body, a working cylinder, an electromagnetic valve pipe, a connecting sealing ring, a connecting sealing lining, a bottom cover, a connecting fork, a bottom valve assembly, an inner open cavity, a piston, a sealing auxiliary part, a check ring, a clamping spring and a guider outer O-shaped ring. The temperature sensor further comprises an external seat, an inner insertion cavity, an external circuit board, a temperature sensor and an inner limiting assembly. The utility model has the following advantages and effects: the temperature at the piston is monitored by arranging the temperature sensor, and the temperature sensor also has the advantage of being convenient to mount / dismount.
Owner:ZHEJIANG GOLD SHOCK ABSORBER

Clamping device and wafer processing equipment

The utility model is applicable to the technical field of clamping jigs, and provides a clamping device and wafer processing equipment, and the clamping device comprises a base, a first fixing part, a first supporting part, a first sliding part, a second sliding part, an elastic assembly and a clamping part; the first fixing piece, the first supporting piece, the first sliding piece and the second sliding piece are all arranged on the base. The first fixing piece, the first sliding piece and the second sliding piece are all located on the peripheral side of the first supporting piece, and an adsorption hole is formed in the first supporting piece; the first sliding piece and the second sliding piece are connected with the elastic assembly. The first sliding piece and the second sliding piece are each provided with a clamping piece, and the clamping pieces are used for pushing a workpiece adsorbed to the first supporting piece towards the first fixing piece. The height of the top of the first fixing piece and the height of the top of the clamping piece are both larger than that of the top of the first supporting piece. According to the embodiment of the invention, the force of the clamping piece for pushing the workpiece is balanced through the elastic assembly, so that the workpiece is clamped through the clamping piece and the first fixing piece, and the workpiece is prevented from being crushed by the clamping piece.
Owner:HANS LASER TECH IND GRP CO LTD

Touch screen pressure testing device

The utility model discloses a touch screen pressure testing device, which belongs to the technical field of pressure testing equipment and comprises a base and a sliding seat slidably mounted at the top of the base, a first electric telescopic rod is fixedly mounted on the front side of the base, an output shaft of the first electric telescopic rod is fixedly connected with the sliding seat, and a first motor is fixedly mounted at the bottom of the sliding seat. The output end of the first motor is fixedly connected with a rotating disc located at the top of the sliding seat, the top of the rotating disc is fixedly connected with a suction cup, the bottom of the rotating disc is fixedly provided with a negative pressure pump connected with the suction cup, and the top of the base is fixedly connected with a supporting frame. The testing mechanism comprises a second motor fixedly installed above the supporting frame and a sliding column penetrating through the supporting frame. Through the arrangement of the suction cup and the negative pressure pump, the touch screen is placed on the top of the suction cup, the touch screen can be adsorbed by starting the negative pressure pump, and stability and firmness are achieved.
Owner:TIANJIN HANLINHUI ELECTRONIC TECH CO LTD

An automated grading, screening, and conveying device and its processing system for Ophiopogon japonicus

This application discloses an automated grading, screening, and conveying device and its processing system for Ophiopogon japonicus, belonging to the field of conveying devices. The automated grading, screening, and conveying device and its processing system for Ophiopogon japonicus includes a conveying chamber, inside which a primary vibrating screen and a secondary vibrating screen are respectively installed. An air supply pipe is installed on the side of the conveying chamber. A rotatable lead screw is installed on the side of the conveying chamber, and a sliding block is threadedly connected to the outer side of the lead screw. This automated grading, screening, and conveying device and its processing system for Ophiopogon japonicus uses a primary vibrating screen for preliminary screening and conveying. Activating the lead screw, in conjunction with the sliding block, a rotating rod, a turntable, a torsion spring block, a pressing block, a hydraulic chamber, a force-bearing rod, a spring, a hydraulic hose, a hydraulic chamber, and an arc-shaped rod, ensures that the scraper rod does not contact the primary vibrating screen during the resetting process, preventing the Ophiopogon japonicus from being crushed and improving the conveying efficiency of the device.
Owner:SICHUAN QUNHE TRADITIONAL CHINESE MEDICINE CO LTD

Rotor press fitting mechanism

The utility model discloses a rotor press-fitting mechanism which comprises a rack. The floating tool assembly is movably arranged on the rack and used for placing a workpiece; the press-fitting assembly is arranged on the rack and located above the floating tool assembly, and the press-fitting assembly is used for conducting press-fitting on the workpiece; and the flat supporting assembly is arranged on the floating tool assembly, and the flat supporting assembly is used for flat supporting of the workpieces before press fitting. In the production process, after a workpiece is placed on the floating tool assembly, the workpiece is press-fitted by the press-fitting assembly, and the workpiece is flattened by the flattening assembly in the process, so that the press-fitting accuracy is ensured, the workpiece is prevented from being crushed, and the production efficiency is improved. And meanwhile, the floating tool assembly can achieve certain buffering on parts such as a sliding rail and a sliding block between the floating tool assembly and the rack in the press-fitting process, the parts are prevented from being crushed, assembly is automatically conducted in the whole process, manual operation is not needed, and the production efficiency is improved.
Owner:SUZHOU JINGSHI INTELLIGENT TECHNOLOGY CO LTD

A corrugated board flattening device

This utility model belongs to the technical field of corrugated cardboard processing equipment, and in particular to a corrugated cardboard flattening device. A flattening roller for flattening the corrugated cardboard is arranged directly above the support roller. Three support rollers and three flattening rollers are provided, and each pair corresponds to one support roller. A geared motor for providing power is installed on the side of the frame. A pulley frame for power transmission is installed between the output shaft of the geared motor and the end of one of the support rollers. A pressure adjusting component is provided between the frame and the flattening roller. This component can be adjusted by telescoping to directly change the pressure of the flattening roller on the corrugated cardboard. The operator can adjust the flattening pressure in real time according to the thickness, flute type, and material hardness of the cardboard: for thicker, harder double / triple corrugated cardboard, the pressure can be increased to ensure a smooth surface; for thinner, easily deformable single / E-flute cardboard, the pressure can be reduced to avoid corrugation crushing.
Owner:GUANGXI HUIYING PAPER CO LTD

Highly conductive graphite electrode material and method for making same

This invention belongs to the technical field of lithium battery anode materials, specifically relating to a highly conductive graphite electrode material and its preparation method. The preparation method includes: pre-dissolving sodium carboxymethyl cellulose into a gel solution, then ball-milling and mixing graphite and conductive carbon black, dispersing them together with a cobalt hexacyanorubium(II)-dodecyltungstencobalt(III) salt hybrid material and hafnium diboride nanomaterials in the gel solution, adjusting the acidity, adding styrene-butadiene rubber emulsion to obtain a uniform slurry, and then coating, drying, and compacting to obtain the anode sheet. This invention significantly improves the conductivity and structural stability of the graphite anode through the synergistic effect of the interface modification of the cobalt hexacyanorubium(II)-dodecyltungstencobalt(III) salt hybrid material and the conductive framework of the hafnium diboride nanomaterials. The process is safe and controllable, and suitable for industrial production of lithium-ion batteries.
Owner:HULUDAO HONGFENG CARBON PROD CO LTD

Double-sided heat dissipation packaging structure

The utility model discloses a double-sided heat dissipation packaging structure, which comprises a frame body, a chip, a plastic package body and an arch-shaped aluminum strip, the frame body is provided with a base island, two opposite sides of the base island are provided with a plurality of first pins and second pins, the chip is attached to the upper surface of the base island, the base island is provided with a first heat dissipation plane exposed out of the lower surface of the plastic package body, and the arch-shaped aluminum strip is provided with a second heat dissipation plane exposed out of the lower surface of the plastic package body. The first heat dissipation plane is flush with the lower surface of the plastic package body, the arched aluminum strip is provided with an arched part, a first connecting part and a second connecting part, the first connecting part and the second connecting part are arranged at the two ends of the arched part, the first connecting part is connected with the upper surface of the chip, and the second connecting part is connected with the upper surface of the second pin. The heat dissipation flat plate is provided with a second heat dissipation plane exposed out of the upper surface of the plastic package body, the second heat dissipation plane is flush with the upper surface of the plastic package body, the double-face heat dissipation structure is adopted, the heat dissipation capacity of the product is higher, and the performance of the product is improved.
Owner:GUANGDONG CHIPPACKING TECH CO LTD

Circuit board placing rack

The utility model discloses a circuit board placing rack which comprises a main placing box, side placing boxes are arranged on the two sides of the main placing box, placing grooves are formed in the tops of the main placing box and the side placing boxes, a first sliding groove is formed in the side edge of the main placing box, a first sliding rod is arranged in the first sliding groove in a sliding mode, and a second sliding rod is arranged in the first sliding rod. A first bolt is connected to the first sliding rod in a threaded mode, a plurality of first clamping grooves are formed in the inner wall of the first sliding groove in an arrayed mode, one end of the first bolt can be clamped into the first clamping groove, and the other end of the first bolt penetrates out of the first sliding groove and is connected with the first sliding groove in a sliding mode. According to the circuit board placement box, the first clamping grooves are formed in the main placement boxes, so that one ends of the first bolts enter the first clamping grooves to limit the movement of the first sliding grooves, the positions of the side placement boxes are fixed, and the placement grooves in the main placement boxes and the placement grooves in the side placement boxes can be combined to accommodate longer circuit boards; and the circuit board in the lower placing box is prevented from being crushed by the upper main placing box.
Owner:JIEHAO ELECTRONIC CIRCUIT CO LTD

Ceramic heating core convenient to install and position

ActiveCN222547635UEasy to limitEasy to rotate and clampHeater elementsIndustrial engineeringBushing
The utility model discloses a ceramic heating core convenient to install and position, which relates to the technical field of heating core installation appliances and comprises a fixing block, a heating core column is arranged at the lower end of the fixing block, an installation sleeve is arranged on the outer side of the heating core column, and a connecting column is sleeved in the middle of the fixing block and the heating core column. The top surface of the fixing block is equidistantly provided with three wire connecting columns used for connecting wires, and through the arrangement of the fixing block, the heating core column can be better installed and positioned; and four limiting convex blocks are arranged on the top surface of the mounting sleeve at equal intervals, limiting clamping grooves used for rotationally clamping the limiting convex blocks are formed in the bottom surface of the fixing block, and through arrangement of the limiting convex blocks and the limiting clamping grooves, the fixing block can be better limited, and subsequent rotary clamping of the fixing block is facilitated.
Owner:SUZHOU WEIRE ELECTRIC TECH CO LTD

Based on the anti-fracture bolt connection pair structure for long-span steel bridges

ActiveCN224283189UGuaranteed resistance to breakageReduce stress concentration factorNutsBoltsStress concentrationNitrile rubber
This utility model discloses a fracture-resistant bolt connection pair structure for long-span steel bridges, including a bolt body, an anti-loosening nut assembly, an anti-corrosion washer assembly, a first steel bridge connection plate, and a second steel bridge connection plate. This utility model relates to the field of steel bridge connection structure technology. This fracture-resistant bolt connection pair structure for long-span steel bridges forms a dual stress dispersion structure through a tapered connector between the bolt head and the bolt segment, and four U-shaped stress relief grooves on the bolt segment. This significantly reduces the stress concentration coefficient at the bolt connection, preventing fatigue crack initiation under long-term alternating loads. Simultaneously, the main nut and auxiliary nut, in conjunction with an annular boss, compress the nitrile rubber elastic bushing, continuously compensating for preload attenuation caused by vibration, achieving a preload retention rate of over 90%. This solves the problem of uneven bolt stress caused by loosening of traditional nuts. It ensures the fracture-resistant performance of the bolt connection pair from both "fatigue resistance" and "loosening prevention" dimensions, meeting the core stress requirements of long-span steel bridges.
Owner:HANGZHOUHUALINGGANGJIEGOUGAOQIANGLUOSHUAN CO LTD

Green Chinese onion discharging device for green Chinese onion combine harvester

The utility model belongs to the technical field of green Chinese onion harvesters, and discloses a green Chinese onion discharging device for a green Chinese onion combine harvester, which comprises a green Chinese onion discharging frame, a green Chinese onion discharging plough and a soil raking harrow are arranged on the front and back of the green Chinese onion discharging frame, a reciprocating vibration mechanism is arranged between the soil raking harrow and the green Chinese onion discharging frame, and a thrust wheel is arranged on one side of the green Chinese onion discharging plough. The thrust wheel is mounted on the green onion outlet frame through a bidirectional adjusting mechanism; two-way position adjustment of the thrust wheel is achieved, the green Chinese onion harvester is suitable for harvesting work of green Chinese onions with different ridge distances and different planting depths, and meanwhile the problem that the green Chinese onions are prone to twining with green Chinese onion root hairs is solved.
Owner:潍坊坤能机械有限公司

Motor air tightness testing device

The invention discloses a motor air tightness testing device, and solves the problem that a test result can be obtained only through multiple times of detection or time increase due to the fact that existing detection equipment is too long in detection time. The motor air tightness testing device comprises an air tightness tester, a motor positioning assembly used for positioning a testing motor, an inflation pipeline assembly connected with the air tightness tester, and a motor outgoing line ventilation assembly communicated with a motor outgoing line of the testing motor. The air inflation pipeline assembly comprises a first air inflation pipeline connected with an air inlet of the test motor and a second air inflation pipeline connected with the motor outgoing line ventilation assembly, and the first air inflation pipeline and the second air inflation pipeline inflate the test motor in the air tightness test process of the test motor.
Owner:DONGYANG CITY DONGZHENG MOTOR