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93results about How to "Reduce deformation damage" patented technology

Quick pressing method for bamboo skin plywood and laminated wood

The invention discloses a quick pressing method for a bamboo skin plywood and a laminated wood. On the basis of the traditional ''cold feeding-hot pressing-cold discharging'' process production line for producing the bamboo skin plywood and the laminated wood, the bamboo skin plywood and the laminated wood can be quickly pressed under the condition that the hot press of the traditional production line is only subjected to small transformation (which is characterized in that one program pressure reduction component is installed in the traditional press); the sized bamboo skin is paved into the bamboo skin plywood in the orthogonal direction or is paved into the bamboo skin laminated wood in the forward direction; the bamboo skin plywood or the bamboo skin laminated wood is put into the hot press; adhesive in the board can be solidified at high temperature and high pressure so as to form a board product by high-pressure forming; then, under the condition that the hot-pressing temperature in the hot press is not lowered, more than three sections of pressure relief processes are implemented; steam in the board is controlled to be released in order; and a finished product is taken out. Compared with the traditional ''cold feeding-hot pressing-cold discharging'' board pressing mode, the quick pressing method disclosed by the invention is characterized in that more than 60% of energy can be saved when being used for preparing the bamboo skin plywood and the bamboo skin laminated wood, and the production efficiency is improved by more than one time.
Owner:INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY

Light and thin composite hot water heating floor

The invention relates to a light and thin composite hot water heating floor which belongs to the technical field of heating. The floor structure comprises a ground decoration layer, an upper-layer metal heat-conducting layer, a heating pipe, a lower-layer metal heat-conducting layer, a calcium silicate board, a thermal insulation layer and a floor plate. The calcium silicate board can enhance pressure resistance, anti-aging deformation property and durability of the floor and enhance the heat conductivity in the heating pipe; a composite heat-conducting structure consists of the upper-layer metal heat-conducting layer, the heating layer coated with a metal film on the outer surface, the lower-layer metal heat-conducting layer and the calcium silicate board can effectively enhance the heat transfer of the floor structure layer, lead the ground temperature to be even, reduce the impacts of temperature stress and avoid the deformation and the damage of the floor; and the composite heat-conducting structure is combined with the thermal insulation layer therebelow, thereby being conductive to mounting and leveling and reducing the downward heat loss. The floor structure can simultaneously improve mechanical and thermal performances, be applicable to a variety of surface layers of wood floors, cement, tiles, stones and the like of newly built and existing buildings, solve the limitations of dry floor applications, avoid the shortcomings of the wet floor structure and realize strong adaptability, simple construction and convenient maintenance.
Owner:北京建筑工程学院 +1

Anti-collision guardrail with buffering function

The invention discloses an anti-collision guardrail with a buffering function, and belongs to the field of guardrails. The device comprises a corrugated guardrail and further comprises a one-time buffering mechanism. The one-time buffering mechanism comprises a plurality of rollers, guide blocks arranged at the upper ends of the rollers and in one-to-one correspondence with the rollers, upper support plates arranged at the lower ends of the rollers and in one-to-one correspondence with the rollers and a plurality of guide wheels rotationally arranged on the corrugated guardrail. The rollers can rotate relative to the guide blocks and the upper support plates. The upper support plates are slidably arranged on a mounting foundation. Guide grooves are formed in the guide blocks. Guide wheelsare located in the guide grooves. Every two adjacent guide blocks are connected through a reset spring. According to the anti-collision guardrail with the buffering function, the one-time buffering mechanism enables a vehicle to generate a certain guiding effect under the driving of the rotation of the rollers during impact, so that the possibility of rollover is reduced, deformation and damage caused by impact force on the rollers can be reduced, meanwhile, the impact force of the vehicle can be absorbed by the energy consumption, and the damage degree of the vehicle is reduced.
Owner:吉林建筑科技学院

Method for supporting roadway with rock burst risk based on double-quilt-cylinder protection theory

InactiveCN111608707AGuaranteed absorptionImproving the ability to deal with the risk of rock burstUnderground chambersTunnel liningEnergy absorptionRock bolt
The invention provides a method for supporting a roadway with a rock burst risk based on a double-quilt-cylinder protection theory, and relates to the technical field of rock burst prevention and control and roadway supporting. The method comprises the steps that when the roadway is tunneled to an area with the rock burst risk, a pressure relief mode and pressure relief parameters are determined according to mining conditions and geological conditions, three-dimensional pressure relief is conducted on a lagging tunneling face or an advance roadway, and a pressure relief and energy absorption quilt cylinder is formed; and according to the coal seam thickness, the roof thickness and the roadway section size, the anchor rod type, the anchor rod row spacing, the anchor cable type and the anchor cable row spacing are determined, the supporting safety coefficient is calculated, the integrity of primary supporting of the roadway is strengthened through an anchor net, anchor rods and anchor cables, and a supporting quilt cylinder is formed. By means of the method, the pressure relief and energy absorption quilt cylinder is formed to form a yielding structure, and the supporting quilt cylinder guarantees the supporting strength. The double-quilt-cylinder structure achieves overall stress and overall shrinkage yielding of the roadway, so that the stability of surrounding rocks is improved, and rock burst is effectively prevented.
Owner:临沂矿业集团菏泽煤电有限公司

Arch rubber fender with frame device

The invention discloses an arch rubber fender with a frame device. The arch rubber fender structurally comprises a body, a first connecting plate, a guard plate, fixing shafts and a second connecting plate. The body, the first connecting plate and the guard plate are of an integrally formed structure, the guard plate is connected to the top of the upper part of the body, and the other end of the body is connected to the top of the left side of the first connecting plate; the second connecting plate and the body are of an integrally formed structure, and the second connecting plate is connected to the bottom of the other side of the body; the fixing shafts are connected to the middle of the body in a penetrating mode through round connecting holes. The first connecting plate is provided with fixing grooves and connecting holes, the fixing grooves, the connecting holes and the first connecting plate are of an integrally formed structure, the connecting holes are connected in the fixing grooves, and the fixing grooves are connected to the upper surface of the first connecting plate. The arch rubber fender can be fixed more effectively, deformation or damage caused by impact is greatly reduced, the fender can be protected better, ships and wharves can be protected more effectively, and practicability can be improved.
Owner:JIANGSU SAIER RUBBER CO LTD

Multi-section anchoring energy dissipation yielding anchor rod for rockburst and anchoring method

The invention discloses a multi-section anchoring energy dissipation yielding anchor rod for rockburst and an anchoring method. The anchor rod aims to effectively release elastic energy of surroundingrock in a high ground stress environment, avoid disasters such as the rockburst and effectively avoid the problems of anchor disengaging, pulling out, snapping and the like of the anchor rod, so thatthe stability of the tunnel surrounding rock is improved, and the construction safety is guaranteed. A rod body is sleeved with at least two longitudinally-spaced yielding sleeves; the yielding sleeves are tightly fixed to the rod body through rubber rings at the two ends; annular serrated knives connected with the yielding sleeves in a welded mode are arranged on the outer walls of the yieldingsleeves at intervals in the longitudinal direction; the outer diameters of the annular serrated knives are matched with the hole diameters of stress release holes; a plurality of sets of front anchoring blocks and rear anchoring blocks are welded to the inner walls of the yielding sleeves at intervals in the longitudinal direction; middle anchoring blocks are welded to the portions, between the front anchoring blocks and the rear anchoring blocks, of the rod body; and elastic bodies are arranged among the middle anchoring blocks and the corresponding end faces of the front anchoring blocks andthe rear anchoring blocks.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD

Collagen extraction tank

The invention aims at providing a collagen extraction tank capable of avoiding smashing of stirring blades during feed. The collagen extraction tank comprises a tank body, wherein a feed port is formed at the top of the tank body; a discharge port is formed at the bottom of the tank body; a stirring device is further arranged in the tank body; a feed slide plate extending into the tank body is arranged at the feed port and is in a grooved structure consisting of groove walls on the two sides and an oblique groove bottom at the bottom. During the feed, raw materials such as frozen fishskin andthe like are fed from the feed port and slide down along the feed slide plate; due to guide and limitation of the groove walls on the two sides, the raw materials can only fall off from a notch of thefeed slide plate, rather than other positions such as the two sides; and the smashing of the stirring blades when the raw materials fall can be avoided as long as the stirring blades of the stirringdevice are not located under the notch. Certainly, collagen extraction water is preferably injected into a tank body before the feed; the stirring blades are immersed in the collagen extraction water;the collagen extraction water generates a cushioning effect; and an impact force when the raw materials fall can be reduced.
Owner:GUANGDONG MINGYANG GELATIN CO LTD

Axial impact vibration drilling tool with adjustable impact characteristics

ActiveCN112593846AAdjust the impact frequencyStroke controlBorehole drivesCamBall (bearing)
The invention discloses an axial impact vibration drilling tool with adjustable impact characteristics. The axial impact vibration drilling tool comprises an upper joint, a bypass valve, a screw motor, a shell, a power input shaft, a universal shaft, a centering bearing, an axial vibration generating device and a lower joint, wherein the axial vibration generating device comprises a vibration starting shaft, a ball, a plane bearing, a spring assembly and a cam body. According to the tool, the screw motor is driven by underground drilling fluids, the vibration starting shaft is driven to rotateby the universal shaft, the ball on the step face of the outer side of the middle of the vibration starting shaft moves in a guide groove in the upper end of the cam body, the guide groove is a spacecam type rail, a periodic step height difference exists, and the ball periodically ascends and descends when moving in the guide groove. According to the axial impact vibration drilling tool, drill bit pressurization can be achieved at the bottom of a well, the mechanical drilling speed is increased, the mechanical drilling speed of drilling of a corresponding destination layer can be increased,and impact vibration characteristics can be regulated and controlled in cooperation with rock characteristics of different stratums, so that the optimal rock breaking efficiency is achieved, and the mechanical drilling speed of drilling of the corresponding destination layer is increased.
Owner:PETROCHINA CO LTD +1

Rotor type expansion energy saver for carbon dioxide transcritical cycle

The invention discloses a rotor type expansion energy saver for carbon dioxide transcritical cycle in the technical field of carbon dioxide transcritical cycle. The rotor type expansion energy saver comprises an expansion energy saver body, an expansion cylinder air inlet pipe and an electromagnetic valve, wherein the expansion cylinder air inlet pipe is fixedly arranged on the outer wall of the left side of the expansion energy saver body, the expansion cylinder air inlet pipe comprises an outer pipe fixedly connected with the outer wall of the left side of the expansion energy saver body, aninner pipe is arranged in an inner cavity of the outer pipe, the right end of the inner pipe communicates with the outer wall of the left side of the expansion energy saver body, and supporting devices are uniformly arranged between the outer wall of the inner pipe and the inner wall of the outer pipe. According to the rotor type expansion energy saver, a telescopic spring stretches out and drawsback, so that a moving rod and a moving plate move, a buffering effect is achieved, the pressure caused by supercritical high-pressure carbon dioxide fluid entering the inner pipe to the inner wall of the inner pipe is reduced, the inner pipe is protected, the probability that the inner pipe is deformed due to the extrusion of high-pressure gas is reduced, and the service life of the expansion cylinder air inlet pipe is prolonged.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Wind driven generator with wind resistance reducing blades

The invention relates to the technical field of wind power generation, in particular to a wind driven generator with wind resistance reducing blades. The wind driven generator comprises the blades, a rotating shaft, an adjusting mechanism, a power generation box body, a resistance mechanism and a transmission mechanism. The blades are arranged at the front end of the rotating shaft, the adjusting mechanism and the resistance mechanism are arranged in the middle of the outer wall of the rotating shaft, and the transmission mechanism is arranged in the rotating shaft. The tail end of the rotating shaft is arranged in the power generation box body, the rotating shaft is rotationally connected with the power generation box body, the ends, close to the rotating shaft, of the blades are fixedly connected with fixing columns, the fixing columns penetrate through the outer wall of the rotating shaft, and the outer walls of the fixing columns are fixedly connected with connecting bearings. According to the wind driven generator with the wind resistance reducing blades, the blades can be adjusted according to the wind speed, the normal work of the blades is ensured, meanwhile, the deformation and damage phenomena of the blades due to too large wind force are reduced, when the rotating shaft is too fast, the speed can be actively reduced, and the situation that the rotating shaft works in an overheat environment for a long time and is damaged is avoided.
Owner:江苏慧之能风力发电有限公司

Anti-failure joint for mine exploration equipment

The invention belongs to the technical field of pipe joints, and particularly relates to an anti-failure joint for mine exploration equipment. The anti-failure joint comprises a connector, the connector comprises a joint female body and a joint column body which are matched with each other, and a fixing mechanism is arranged outside the connector. The fixing mechanism comprises a fixing ring, extension plates, elastic claws, clamping blocks, sleeves, annular grooves, clamping grooves and push rods, wherein the fixing ring fixedly sleeves the joint column body, one ends of the extension plates are fixed to the side wall of the fixing ring, the extension plates are coaxial with the joint column body, the multiple sets of elastic claws are arranged on the side walls of the ends of the extension plates in an annular array mode, and two elastic claws in each set are symmetrically arranged. The elastic claws are extruded by the push rods to deform, so that the two clamping blocks move in opposite directions to be buckled into the clamping grooves, connection is more stable, and the anti-disconnection effect is good; and rubber rings and damping springs provide good damping buffering, deformation damage to the connection position of the connector caused by equipment vibration is reduced, and the connection failure is avoided.
Owner:启东通奕自动化设备有限公司
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