Patents
Literature
303 results about "Collapsed cavity" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Workpiece table of proximity contact type exposure machine
ActiveCN119439652Aavoid stickingStable frictionPhotomechanical exposure apparatusMicrolithography exposure apparatusRotary stageWafer
The invention discloses a workpiece table of a proximity contact type exposure machine. A horizontal driving device has a degree of freedom of movement along an X-axis direction and a Y-axis direction; the rotating table has the freedom degree of rotating around the central axis of the rotating table. The lifting table is arranged above the rotating table and has the degree of freedom of moving in the Z-axis direction; the Z-axis voice coil motor is arranged between the rotating table and the lifting table and used for driving the lifting table to move in the Z-axis direction. The ball bowl leveling assembly is arranged between the wafer carrying table and the lifting table and comprises a ball bowl seat with a bowl-shaped cavity and a ball head matched with the bowl-shaped cavity; a concave cavity is formed in the bottom of the bowl-shaped cavity; the spherical surface of the ball head is in sliding sealing fit with the spherical inner wall surface of the bowl-shaped cavity and seals the concave cavity; the mask frame is arranged above the wafer carrying table. According to the invention, the relative position and posture between the mask plate and the wafer can be adjusted, the accurate control of the leveling process is realized, the high-precision movement of four degrees of freedom of X / Y / Z / RZ is effectively realized, the accurate control of the leveling contact force is realized, and the practicability is high.
Owner:SUZHOU ZHONGTE MICROELECTRONICS TECH CO LTD
Disposal method for mud burst and water burst collapse of water-rich weathered broken zone of high-altitude tunnel
PendingCN119572264Areduce economic costsfast treatmentMining devicesUnderground chambersSoil scienceCollapsed cavity
The invention belongs to a treatment method for mud bursting and water bursting collapse of a water-rich weathering fracture zone of a high-altitude tunnel, which comprises the following steps of: temporarily sealing a tunnel face, drilling collapse and water bursting to drain water and relieve pressure, radially grouting and reinforcing a constructed primary support behind a section influenced by water bursting and mud bursting, and performing water bursting and water bursting on the primary support after the section influenced by the water bursting and mud bursting to treat the water bursting and water bursting collapse of the water-rich weathering fracture zone of the tunnel. According to the treatment method, the water-rich weathered broken zone of the high-altitude tunnel is subjected to water-rich weathered broken zone mud bursting and water bursting collapse section treatment, then a probe hole is formed in the front portion to detect the front condition, concrete pumping and grouting are conducted on a collapsed cavity, and finally a temporary support is used for additionally arranging an advanced pipe shed to reinforce the collapse section, so that the high-altitude tunnel water-rich weathered broken zone mud bursting and water bursting collapse section can be effectively treated. According to the method, the tunnel construction can smoothly pass through the mud burst and water burst section of the water-rich weathering fracture zone, the tunnel can be smoothly and timely communicated, the treatment method is simple, efficient, low in economic cost and high in treatment speed, the treatment period is shortened, and meanwhile a large amount of construction cost is saved.
Owner:NO 1 ENG CO LTD OF FHEC OF CCCC
Speed reducing mechanism and speed reducing motor with same
PendingCN119222308Aavoid effluxIncrease the difficultyGearboxesGearing detailsGear wheelCollapsed cavity
The invention discloses a speed reducing mechanism and a speed reducing motor with the speed reducing mechanism, and the speed reducing mechanism comprises a speed reducing box shell which is hollow inside so as to form a containing cavity, and the containing cavity is internally provided with lubricating oil; the gear train unit is arranged in the containing cavity, and the output end of the gear train unit can extend to the outer side of the containing cavity; the gear train unit is provided with a containing cavity, an opening communicated with the containing cavity is formed in the upper portion of the shell wall of the reduction gearbox shell, a ventilation structure is arranged in the opening, and the ventilation structure is configured to adjust the air pressure in the containing cavity when the gear train unit works. A concave cavity is formed in the intersection position of the open hole and the cavity wall of the reduction gearbox shell, cavity openings of the concave cavity are distributed in the adjacent cavity walls, different in extending direction, of the containing cavity, and the concave cavity is constructed to prevent lubricating oil from forming an oil film at the intersection position of the open hole and the cavity wall of the reduction gearbox shell.
Owner:ZHEJIANG PANGOOD POWER TECH CO LTD
Soft and hard interbedding rockburst tunnel TBM (Tunnel Boring Machine) jamming escape construction method
PendingCN119333159Aensure safetyreduce economic lossUnderground chambersHydro energy generationFiberCollapsed cavity
The invention discloses a soft and hard interbedded rockburst tunnel TBM jamming escape construction method. The method comprises the steps that rock ballast in a TBM cutter bin and in front of a tunnel face is cleaned; extrusion surrounding rock around a TBM shield is subjected to expanding excavation treatment, and a supporting structure is constructed above the shield; advanced small guide pipe construction is conducted on surrounding rock in front of the cutterhead; the collapse bodies around the cutter bin and the shield are cleared again, trial tunneling is carried out, if the collapse bodies cannot escape, the rock blocks are cleared again, and if the collapse bodies escape smoothly, the next operation is carried out; the TBM performs normal tunneling, and supports the machine clamping section to ensure the stability of the surrounding rock; and after the TBM smoothly passes through the machine clamping section, fiber concrete is used for backfilling the collapsed cavity. When the TBM is stuck due to rock burst, extrusion, collapse and the like of the tunnel, the methods of dangerous rock cleaning, pilot tunnel excavation, advance support, collapse section reinforcement and the like are adopted, so that the safety of constructors and TBM equipment can be effectively ensured, quick escape is realized, the influence on the construction period is reduced, and the economic loss caused by rock burst is reduced.
Owner:WUHAN UNIV
Steel-concrete combined bridge structure combined by hot-rolled section steel and formwork-free concrete bearing
PendingCN119352387ABridge structural detailsBridge erection/assemblyCollapsed cavityArchitectural engineering
The invention discloses a steel-concrete combined bridge structure combining hot-rolled section steel and a formwork-free concrete support. The steel-concrete combined bridge structure comprises a concrete bridge deck, the formwork-free concrete support, hot-rolled H-shaped steel and a detachable limiting connecting assembly. The section of the prefabricated concrete support is of an inverted halfpace-shaped structure, and the prefabricated concrete support is arranged between an upper flange plate of the hot-rolled H-shaped steel and the bottom face of the concrete bridge deck slab and is provided with a U-shaped bent reinforcing steel bar with the two ends extending out of the upper surface of the support to be connected to the concrete bridge deck slab. At least one limiting connecting assembly used for connecting an upper flange plate of the hot-rolled H-shaped steel, the prefabricated concrete bearing and the concrete bridge deck slab is arranged in a cavity formed between the prefabricated concrete bearing and the concrete bridge deck slab, and concrete is poured and filled. According to the hot-rolled H-shaped and concrete-supported steel-concrete combined bridge structure, the welding work of a steel-concrete combined bridge can be reduced, the structure is detachable without welding, the construction efficiency is improved, the construction cost is reduced, and maintenance and replacement in the operation period are facilitated.
Owner:JSTI GRP CO LTD +1
Front longitudinal beam structure and vehicle
The utility model relates to the technical field of vehicles, and provides a front longitudinal beam structure and a vehicle. The front longitudinal beam structure comprises a front longitudinal beam body, the front longitudinal beam body comprises an inner plate and an outer plate which are connected, the inner plate and the outer plate are oppositely arranged, and a collapsing cavity is formed between the inner plate and the outer plate; the ratio of the size of the crumple cavity in the height direction of the vehicle body to the size of the crumple cavity in the width direction of the vehicle body ranges from 2.6 to 2.9. According to the front longitudinal beam structure, the size of the crumple cavity in the width direction of the automobile body can be set according to the arrangement space of a front cabin of an actual extended-range automobile, meanwhile, the size of the crumple cavity in the height direction of the automobile body is increased, the space utilization rate of the front cabin can be increased, it can be guaranteed that the crumple cavity has high energy absorption crumple capacity, and the service life of the crumple cavity is prolonged. Therefore, the vehicle body can meet the collision requirement, and the safety of passengers is ensured.
Owner:ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD +1
Top arch surrounding rock loosening and collapsing depth calculation method considering stress holding effect
ActiveCN119203547Afast analysislow costGeometric CADDesign optimisation/simulationCollapsed cavityFracture zone
The invention provides a method for calculating the loosening and collapsing depth of top arch surrounding rock. The method comprises the steps that S1, the arch crown height a, the tunnel radius b and the boundary angle theta 1 of an equivalent four-center arc are obtained; s2, on the basis of the data obtained in the step S1, drawing is conducted through a four-center method, and an elliptical caving arch is formed; s3, carrying out stress balance analysis on the self-stabilizing surrounding rock in the vertical direction to obtain a balance equation; s4, the balance equation is analyzed, a transcendental equation only containing one unknown quantity is obtained, and the unknown quantity is the included angle theta h between the surrounding rock friction force direction of the self-stabilizing surrounding rock and the vertical direction; and S5, solving the equilibrium equation through a numerical analysis method to obtain the slump depth. The cavern top arch surrounding rock collapse cavity depth can be accurately predicted, the surrounding rock supporting force is determined, and a reasonable dynamic design basis is provided for tunnel construction penetrating through a fault fracture zone.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
Open-type TBM shield reserving in-situ disassembling method for water conveyance tunnel in fractured stratum
PendingCN119664385AGuaranteed stabilityEnsure construction safetyUnderground chambersHydro energy generationCollapsed cavityStructural engineering
The invention discloses an open-type TBM shield reserving in-situ dismantling method for a broken stratum water conveying tunnel. The method comprises the steps that firstly, a collapsed cavity in the top of a shield is backfilled, and broken surrounding rock is subjected to grouting reinforcement; 2, integrally welding the shield; 3, mounting a TBM host and a bridge area hoisting facility; 4, TBM rear matched hoisting facilities are installed, and TBM rear matched equipment is dismantled; fifthly, a main beam and a rear support of the TBM host are dismantled; sixthly, a main drive and a cutterhead of the TBM host are dismounted; and seventhly, grouting reinforcement is conducted on the top area of the cutter head and the top area of the shield. According to the method, the top shield, the side shield and the bottom shield are integrally welded through profile steel before dismantling, the shields are not dismantled and are reserved as permanent supporting bodies during dismantling, various hoisting devices are matched, in-situ safe and efficient dismantling in the TBM hole is achieved, the stability of rock around the hole is fully guaranteed, the construction risk is greatly reduced, and the construction safety and the construction progress are effectively guaranteed.
Owner:SINOHYRDO ENG BUREAU 3 CO LTD
A temporary arch protection structure in tunnel initial support arch replacement construction
Owner:SICHUAN ROAD & BRIDGE EAST CHINA CONSTRUCTION CO LTD
Radiator and manufacturing method thereof
PendingCN119212329AReduce manufacturing difficultyImprove pass rateModifications by conduction heat transferCollapsed cavityHeat spreader
The invention aims to provide a radiator and a manufacturing method thereof, the radiator comprises a bottom frame and a radiating piece, one side surface of the bottom frame is provided with a concave cavity for accommodating a heating piece, one side surface, far away from the concave cavity, of the bottom frame is also provided with a step groove, and the inner bottom wall of the step groove is provided with a cavity hole communicated with the concave cavity; the heat dissipation piece comprises a heat conduction plate, a heat conduction protruding block and a plurality of heat dissipation teeth, the heat dissipation teeth are arranged on the same side face of the heat conduction plate at intervals, the heat conduction protruding block is arranged on the side face, away from the heat dissipation teeth, of the heat conduction plate, the heat conduction plate is contained in the step groove in a matched mode, and the heat conduction protruding block penetrates through the cavity hole. And the outer side wall of the heat conduction bump is hermetically connected with the inner side wall of the cavity hole. Thus, the radiator is arranged to be of a structure in which the bottom frame and the heat dissipation piece are combined and welded, the manufacturing difficulty of the radiator can be greatly reduced, the qualification rate of the radiator is effectively improved, batch production is facilitated, and meanwhile it can be effectively guaranteed that the manufactured radiator has excellent heat conduction and heat dissipation performance.
Owner:TIGER TECH PRECISION PARTS(HUIZHUO) CO LTD
TBM gripper shoe self-adaptive step changing device, control system and method
The invention discloses a TBM gripper shoe adaptive step changing device, a control system and a method, and relates to the technical field of tunneling equipment automation, the TBM gripper shoe adaptive step changing device comprises a data acquisition module (laser radar array), a data processing module (point cloud denoising and feature extraction) and a control module (path planning and hydraulic servo control); according to the method, the surface of surrounding rock is scanned in real time through a laser radar, the characteristics of a steel arch and a collapse cavity are recognized in combination with an improved RANSAC algorithm and PointNet + +, a collision-free step changing path is automatically planned according to matching conditions, and displacement of an oil cylinder is accurately controlled through PID; the problems that traditional manual operation is low in positioning precision, cavity collapse response lags behind, and efficiency is limited are solved, and the safety and efficiency of TBM continuous tunneling are remarkably improved.
Owner:CHINA RAILWAY TUNNEL GROUP CO LTD +1
Top arch collapse cavity treatment method for tuffaceous volcanic ash stratum
The invention relates to the technical field of open-type TBM construction, in particular to a tuffaceous volcanic ash stratum top arch collapse cavity treatment method. The collapse cavity of the top arch is grouted through three grouting procedures, and specific grouting liquid is used in each procedure; the grouting range of the first-time shallow grouting sealing is 0-3 m outside the outline of the tunnel vault, the surface layer of the collapse cavity is sealed after grouting, and it is guaranteed that follow-up grouting slurry is not lost; the grouting ranges of the subsequent two procedures are 3-4.5 m and 4.5-6 m outside the outline of the vault of the tunnel, and the damage rate of the tuffaceous volcanic ash stratum is reduced through the three-time grouting procedure; the method not only can reduce the change rate of the convergence value of the section, but also can reduce the loss of the grouting liquid, and is suitable for implementation of large-scale construction projects.
Owner:SINOHYDRO BUREAU 14 CO LTD
Concave cavity head type navigation body time-delay air cushion buffering and load reducing device combined with active ventilation
The invention provides a cavity head type navigation body time-delay air cushion buffer load reduction device combined with active ventilation, and belongs to the field of moving object high-speed water entry impact load reduction. The technical problems of a load reduction mechanism and a load reduction effect of the air cushion effect of the navigation body are solved. Through the combined effect of the porous air leakage structure and the active ventilation device, adjustment and control over the load reduction air cushion of the head when the concave cavity head type projectile sails in water are achieved, the load reduction function is achieved, and meanwhile the negative influence of the air cushion effect on the sailing process of the projectile is avoided. A novel porous air leakage method is adopted, the pressure intensity of the air cushion in the concave cavity is kept at a low value through time-delay air leakage, buffering load reduction is achieved in combination with active ventilation, and technical support is provided for high-speed water entry flow control, load reduction design, low-load stable configuration theory development and the like.
Owner:HARBIN ENG UNIV
Evaporator, evaporation assembly and ice-lolly maker
The evaporator comprises a container main body, a cover body and a sealing piece, the container main body comprises a containing part and a first convex edge part which are connected, the first convex edge part is arranged in a protruding mode relative to the outer periphery of the containing part, the containing part is provided with a containing cavity, and the containing cavity is used for containing refrigerating fluid; the cover body comprises a cover main body and a second convex edge part, the second convex edge part is connected with the first convex edge part, the cover main body is provided with at least one profiling bulge which is convexly arranged towards the cavity bottom of the accommodating cavity, each profiling bulge is provided with a concave cavity with one closed end, and the concave cavities are used for accommodating parts to be cooled; the sealing piece is arranged between the first protruding edge part and the second protruding edge part and surrounds the containing part. By the adoption of the structure, refrigerating fluid in the evaporator is isolated from the outside, the risk that the refrigerating fluid leaks and makes contact with ice-lolly liquid is reduced under the action of the sealing piece, safety performance is improved, and user experience is improved.
Owner:SHENZHEN INTELLIROCKS TECH CO LTD +1
UPVC (unplasticized polyvinyl chloride) pipe bonding auxiliary device
The utility model discloses a UPVC pipe bonding auxiliary device relates to pipeline installation field, including slide rail, pipeline support block and two bonding direction adjusting block, be equipped with three slider on the slide rail, slider can freely slide along the slide rail, pipeline support block corresponds with the middle slider, its top is equipped with the semicircle concave cavity that is used for supporting UPVC pipeline, and the two bonding direction adjusting block is equipped with the semicircle concave cavity that is used for supporting the UPVC pipeline. Through the design of the pipe fitting concave cavity formed by combining the cross-shaped concave cavity and the round concave cavity at the bottom, the bonding direction adjusting block can position and support the UPVC pipe fittings, the angle between the two UPVC pipe fittings in the bonding process is ensured to meet the requirements (such as 0 degree, 90 degrees and 180 degrees), the problem of deviation caused by manual naked eye judgment is thoroughly solved, the production efficiency is improved, and the production cost is reduced. And it is ensured that the bonded pipeline is installed in place at a time, reworking is avoided, waste of materials is reduced, and working efficiency is improved.
Owner:KAIFENG SHIDAI NEW ENERGY TECH CO LTD
Ring main unit convenient to install
ActiveCN224053708USubstation/switching arrangement casingsAnti-seismic devicesCollapsed cavityScrew thread
Owner:GONGHONG ELECTRIC APPLIANCE CO LTD
Production mold for split-type grit-textured packaging bottle
A production mold for a split-type grit-textured packaging bottle includes fixed-mold and movable-mold assemblies. The fixed-mold assembly has top and bottom provided with injection channel and fixed-mold A plate respectively. Fixed-mold insert(s) installed in the fixed-mold A plate communicates with the injection channel, and corresponds to a concave cavity having bottom consistent with product's closed end in shape. Two inclined guide pillars are provided the concave cavity's two sides. The movable-mold assembly's top has a movable-mold B plate provided with a B-plate insert with a concave cavity-facing mold core. The B-plate insert's end relative to the product forms internally as an inverted cone structure. A pushing assembly includes a movable-mold push plate movable on the movable-mold B plate and having a top provided, relative to the concave cavity, with side sliders for correspondingly driving the guide pillars. Sliders'product-facing sides have structures matching grit texture on the product's outer wall.
Owner:SHENZHEN PORSHEALTH BIOENGINEERING CO LTD
A knuckle, a front suspension system and a vehicle
The utility model discloses a knuckle, front suspension system and car, including the knuckle body of casting forming, knuckle body is equipped with by the bearing mounting hole of outside extension to the back side, the back side of knuckle body is equipped with the recessed cavity of recessing to the outside side in the position of corresponding bearing mounting hole, the cavity wall of recessed cavity forms encircling type reinforcing rib, the top of knuckle body is equipped with damper mounting part, and the damper mounting part extends upward from the top of knuckle body, and the inside of damper mounting part is equipped with hollow recess, and hollow recess forms hollow entrance in the cavity wall of recessed cavity. The utility model discloses through the implementation of large -area's hole digging weight reduction, and the recessed design is suitable simultaneously, forms certain depth thin wall four -corner surrounding structure, and the reinforcing rib of suitable whole circle slender encircling type, has promoted strength and durability, realizes the balance of light weight and performance. Meanwhile, the hollow casting structure is used to the damper mounting part, and the weight is reduced greatly through the hollow structure.
Owner:GAC HONDA AUTOMOBILE CO LTD +1
Flexible protection device for treating collapsed cavity at top of tunnel
ActiveCN224214198UEnsure construction safetyGuaranteed operational safetyAnchoring boltsProtective coversCollapsed cavityRock bolt
The utility model discloses a flexible protective device for treating a collapsed cavity at the top of a tunnel, which comprises at least two flexible protective nets which are arranged from top to bottom and connected to the inner wall of the collapsed cavity, and the aperture of the lower part of each flexible protective net is smaller than that of the upper part of each flexible protective net. The protective net is composed of a steel wire rope protective net body and a twisted-pair hexagonal flexible net body, the steel wire rope protective net body is formed by rhombic weaving of Galfan coating steel wire ropes, and the twisted-pair hexagonal flexible net body is formed by weaving of A-grade Galfan coating steel wires, overlaps the edge of the steel wire rope protective net body by 10-20 cm and is tied. The steel wire rope protective net is formed by splicing meshes of different specifications, splicing follows a specific principle, and steel wire rope buckles are used for connection. The device is further provided with anchor rods, spring hooks and other components, and the number and size of the components are determined according to the three-dimensional data of the collapsed cavity. Compared with a traditional protective net, the device can effectively absorb rockfall energy, is good in buffering effect, high in adaptability to different collapse cavities, easy and convenient to install and capable of reducing construction risks and guaranteeing tunnel construction and operation safety.
Owner:THE SECOND ENG CO LTD OF CHINA RAILWAY 14TH CONSTR BUREAU CO LTD +1
Upper air outlet type ventilation blade assembly and ventilation window
The utility model discloses an upper air outlet type ventilation blade assembly and a ventilation window, and the upper air outlet type ventilation blade assembly comprises at least two blade groups which are distributed at intervals along the front-back direction; each blade group comprises a plurality of blades which are distributed at intervals in the vertical direction; the section of each blade is of a V-shaped structure, each blade comprises a first plate and a second plate which are sequentially arranged in the front-back direction and form an included angle, a V-shaped cavity with an upward opening is formed between each first plate and the corresponding second plate, the lower end of each first plate extends to be provided with an extension plate, and a concave cavity with a backward opening is formed between each extension plate and the corresponding second plate. A water falling hole capable of communicating the V-shaped cavity with the concave cavity is formed in the second plate piece; the air flow sent out through the blade assembly is in a rising state, the upward air outlet effect is achieved, and when the air flow passes through the extension plate, negative pressure is formed in the concave cavity through the Venturi effect, so that accumulated water flows out of the water falling hole more easily, the water drainage efficiency is improved, and the water accumulation situation is reduced.
Owner:ZHONGSHAN HUAXIA VENTILATION EQUIP CO LTD
Spherical glass sliding door for pleasure boat
The spherical glass sliding door for the pleasure boat comprises a main deck and a boat body, the top of the main deck is fixedly connected with a lower end rail base, the top of the lower end rail base is fixedly connected with a lower end rail, the top of the lower end rail is connected with a glass frame in a sliding mode, and the bottom end of the glass frame is provided with a structural concave cavity. A steel roller assembly is connected into the structural concave cavity through a screw and rolls on the lower end rail, and glass is bonded to the glass frame. The sliding door is designed into a spherical surface, the upper track arc and the lower track arc rotate around the same axis, and the glass is customized into a special shape. The spherical glass sliding door is mounted on the peripheral wall of the passenger cabin in an externally-hung manner, so that the requirements of neat and harmonious appearance and safe and reliable operation of each function after a door is mounted on a sightseeing boat with a special shape are met. Meanwhile, the light transmitting area in the passenger cabin is increased, and the sightseeing experience of tourists is greatly improved.
Owner:WUXI DONGFANG HIGH PERFORMANCE SHIP ENG
An electromagnet structure and its oil tank isolation valve
ActiveCN113389922BOperating means/releasing devices for valvesCheck valvesIsolation valveCollapsed cavity
The present invention discloses an electromagnet structure and its oil tank isolation valve, the electromagnet structure includes a lower shell, a coil frame, an enameled wire and a yoke iron plate; the through hole of the coil frame is arranged vertically, the enameled wire is wound in the winding window of the coil frame, and the yoke iron plate covers the upper flange of the coil frame; the lower shell is provided with a concave cavity with an opening facing upward, the top of the cavity wall of the concave cavity of the lower shell is provided with a support, and the edge of the yoke iron plate rests on the support of the lower shell; the yoke iron plate is covered with a layer of a first sealing colloid formed by injection, and the first sealing colloid abuts against the inner side of the top of the cavity wall of the concave cavity of the lower shell. The present invention can not only realize the long-term and effective sealing of the coil part in the electromagnet structure, avoid premature failure of the seal, so as to meet the higher sealing performance requirements; but also reduce the difficulty of product manufacturing and greatly reduce the product production cost.
Owner:XIAMEN HONGFA AUTOMOTIVE ELECTRONICS CO LTD
A non-magnetic buffer windproof door stopper
The present invention discloses a non-magnetic buffering windproof door stopper, comprising a mounting base, a circular concave cavity is provided on the bottom surface of the mounting base, two mounting circular holes are provided on the mounting base, a rotating buckle body is also provided in the circular concave cavity, the middle part of the rotating buckle body is connected to the center of the top wall of the circular concave cavity through a pin shaft, a waist-shaped adjustment hole is also provided near the edge of the mounting base, an adjustment locking hole is provided on the vertical part of the upper body, an adjustment sleeve is provided in the adjustment locking hole, and a clamp is also provided, a convex column is also provided in the circular concave cavity, a torsion spring is provided on the convex column, a rotating locking point is connected to the circular concave cavity through a rotating shaft, and the end of the rotating locking point is pressed in the rotating lock groove. The structural arrangement of the present invention is reasonable, and it can effectively achieve buffering and non-magnetism through the torsion spring and the rotating buckle body, which is conducive to reducing costs, and can also effectively improve the impact resistance, improve the comfort of use, and has strong applicability and good practicality.
Owner:ZHAOQING KEYUAN PLASTIC PROD CO LTD
Hydrodynamic deep drawing forming die and method for stepped part
The invention provides a hydrodynamic deep drawing forming die and method for a step-shaped part, and relates to the technical field of plate forming. The forming die comprises a male die, an edge pressing part, a female die, a left supporting block capable of moving up and down and a right supporting block capable of moving up and down; the left supporting block is arranged at the left end of the lower surface of the upper step of the male die, the right supporting block is arranged at the right end of the lower surface of the upper step of the male die, a hollow part is defined by the left supporting block and the right supporting block, and the inner wall of the hollow part is attached to the side wall of the lower step of the male die; the outer wall contour of the hollow part coincides with the downward projection of the side wall contour of the upper step of the male die; an inner cavity of the female die is composed of an upper concave cavity and a lower concave cavity, and a fluid channel communicated with the outside is formed in the inner wall of the lower concave cavity. When the forming die provided by the invention is used for forming the stepped part, excessive thinning of a plate and a plate suspension area corresponding to the two layers of stepped fillets of the convex die can be avoided, and wrinkling of the plate suspension area is avoided.
Owner:HARBIN INST OF TECH
Front mold, mold and front mold processing method capable of improving product quality
The present invention discloses a front mold capable of improving product quality, comprising a front mold body, wherein the front mold body has a concave cavity, wherein the concave cavity is divided into a first cavity and a second cavity which are interconnected and connected to each other, and a cavity mouth of the concave cavity is formed on a side of the first cavity away from the second cavity; the first cavity is formed by CNC processing; the second cavity is formed by electric spark processing; the present invention can avoid causing the cavity wall draft angle of the concave cavity to become smaller or even form an undercut, so as to avoid causing product damage or scraping, thereby improving product quality; the present invention also discloses a mold and a processing method of the front mold capable of improving product quality.
Owner:SHENZHEN FENDA TECH CO LTD
Hall element protection seat
ActiveCN223652480URelieving strain on wire connectionCasings/cabinets/drawers detailsHall elementCollapsed cavity
The utility model relates to a Hall element protection seat, which comprises a seat body with an inner cavity, mounting plates are respectively arranged on two sides of the periphery of the seat body, a mounting seat is arranged on the side surface of the mounting plate on one side, a concave cavity is arranged on the mounting seat, and a sinking cavity for accommodating a Hall element is arranged at the rear end of the concave cavity. A wire outlet hole is formed in the front end part of the mounting seat at the front end of the concave cavity; and a wire of the Hall element can extend to the front end of the concave cavity along the bottom surface of the concave cavity after being bent and then is led out from the wire outlet hole. According to the utility model, the lead of the Hall element is led out from the wire outlet hole at the front end of the concave cavity, and the peripheral wall of the wire outlet hole is used for limiting the lead, so that the lead cannot be randomly scattered; since the lead wire and the bottom surface of the concave cavity do not need to be bonded by glue, a gluing process in a conventional structure can be omitted, the cost is reduced, the overall aesthetic property of the protection seat is improved, and the lead wire does not fall off in the use process, so that the normal work of the Hall element is effectively ensured.
Owner:CHANGZHOU ZHUOYOU ELECTRIC APPLIANCE CO LTD
Support device and method for construction of open TBM through gas tunnel
The present invention relates to a support device and method for construction of an open TBM passing through a gas tunnel, wherein the support device comprises: an assembled arch frame and an assembled locking foot anchor rod, wherein the assembled arch frame and the assembled locking foot anchor rod are staggered and connected to form the support device; the construction method of the open TBM passing through a gas tunnel: first, the support device is arranged on the rock wall of the gas tunnel; then, the support device is reinforced; then, chemical grouting is used to consolidate the TBM cutter head and shield; then, loose bodies in front of and around the TBM cutter head are consolidated; then, the collapsed cavity on the top of the TBM cutter head and shield is backfilled; then, an advanced pipe shed is arranged along the arch at the rear of the TBM shield; finally, a secondary lining isolation layer is laid on the gas tunnel body. The present invention can ensure that the open TBM can pass through the gas tunnel safely and efficiently, thereby improving the construction efficiency.
Owner:SINOHYDRO BUREAU 14 CO LTD
Adjusting module for preassembling metering shell
Owner:QIANWEI KROMSCHRODER METERS CHONGQING
A support structure for heat exchange tubes
A support structure for a heat exchange tube includes: a gasket; a pipe clamp in an inverted U shape, having a first support section extending upward, a second support section arranged side by side with the first support section, and a transition section connecting the two, the first support section, the second support section, and the transition section jointly define a concave cavity with an opening facing downward and opposite to a first surface, so that a first heat exchange tube can be inserted into the concave cavity through the opening, and a first slot and a second slot are respectively provided on the first surface of the gasket corresponding to the first support section and the second support section; the lower end of the first support section is inserted into the first slot, and the side surface of the lower end of the first support section is connected to the corresponding side wall of the first slot by welding; the lower end of the second support section is inserted into the second slot, and the side surface of the lower end of the second support section is connected to the corresponding side wall of the second slot by welding. Compared with the prior art, the pipe clamp of the utility model can be stably constrained on the gasket.
Owner:ZHENHAI PETROCHEMICAL JIANAN ENGINEERING CO LTD
Blister tray with buffer gasket
ActiveCN223187906UContainers to prevent mechanical damageRigid containersCollapsed cavityClassical mechanics
The utility model relates to the technical field of blister trays, in particular to a blister tray with a buffer gasket, which comprises a rectangular frame, a concave cavity arranged in the middle of the frame, a plurality of support tables respectively arranged on the side edges of the periphery of the concave cavity, and the support tables are protruded upwards from the bottom of the concave cavity. The horizontal plane where the upper end faces of the supporting tables are located is lower than the horizontal plane where the upper end faces of the frames are located, and a notch is formed between every two adjacent supporting tables. A first buffer gasket is arranged on the upper end face of the supporting table; a second groove is further formed between the end, away from the cavity, of the supporting table and the frame. According to the blister tray with the buffer gasket, the friction force between a product and the supporting table is effectively increased, the horizontal movement tendency of the product relative to the blister tray is reduced, shaking and displacement of the product are avoided, and meanwhile collision and friction between the side face of the product and the blister tray can be avoided; the problem that a product is abraded due to collision and friction between the product and the blister tray is solved.
Owner:VARITRONIX HEYUAN DISPLAY TECH