Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

3338results about How to "Avoid wear and tear" patented technology

Coiled tubing clamping device and injection head using same

The invention provides a coiled tubing clamping device and an injection head using the same, belonging to the field of oil production and drilling equipment. The clamping device includes a saddle-type clamping block and a clamping block seat, wherein the saddle-type clamping block is connected to the clamping block seat. The clamping device is characterized in that two sides of the saddle-type clamping block are provided with tongue-like platforms, the tongue-like platform is provided with an opening hole, the back part of the saddle-type clamping block is provided with a recess, two sides of the clamping block seat are respectively provided with a pair of bosses, the recess of the saddle-type clamping block is inserted into a slot formed by the clamping block seat bosses, a running clearance is left between the recess and the slot, and the clamping block seat is provided with a positioning screw for limiting the position of the saddle-type clamping block. The injection head comprises an oil pipe clamping mechanism and a transmission chain, wherein the oil pipe clamping mechanism is mounted on the transmission chain through two hinge pin holes on the clamping block seat. The technical proposal has the advantages that the abrasion of the oil pipe can be effectively reduced, the clamping device has operational reliability, and the clamping blocks are convenient in replacement.
Owner:YANTAI JEREH OILFIELD SERVICES GROUP +1

Method for preparing bimetal composite plate by stirring friction braze welding

The invention discloses a method for preparing a bimetal composite plate by stirring friction braze welding. The method comprises that: a plate with small hardness is used as a covering layer metal plate; a plate with high hardness is used as a base layer metal plate; the covering layer metal plate and the base layer metal plate are horizontally fixed on a working platform surface in a lap joint mode; solders which can generate eutectic reaction with one of the upper/base layer metal plates are preset between the upper/base layer metal plates; a non-needle type cylinder friction device is arranged over the covering layer metal plate; the non-needle type cylindrical friction device is made to rotate and be pressed to be closely contacted with the surface layer of the covering layer metal plate, but not penetrate the covering layer metal plate, and the non-needle type cylindrical friction device rotates in the original position or moves forward along the surface of the covering layer metal plate while rotating; by utilizing frictional heat to melt the solders, the upper/base layer metal plates are both quickly melted in the solders, thereby achieving excellent interface combination; and the excessive solders are squeezed out, and a thin and dense soldering seam is formed, so that the bimetal composite plate is prepared. Compared with the braze welding in a furnace, the method has the advantages of high efficiency, energy conservation, pressure lead-in, unnecessary soldering flux and gas protection and short holding time at a high temperature.
Owner:XI AN JIAOTONG UNIV

Power transmission line conductor repairing and winding device, robot and conductor repairing method

The invention discloses a power transmission line conductor repairing and winding device, a robot and a conductor repairing method. The power transmission line conductor repairing and winding device comprises a support lifting arm, a connection base and a driving base; a spur gear with a line clamping groove is arranged on the driving base; furthermore, a threading hole is arranged on the spur gear; a winding driving mechanism is arranged in the driving base; a bracket is also arranged on the driving base; a winding roller and a releasing motor are arranged on the bracket; the power transmission line conductor repairing robot comprises a robot body with a camera and a walking positioning mechanism; a linear guideway and the power transmission line conductor repairing and winding device are arranged on the robot body; a conductor clamping jaw component is arranged on the linear guideway; and the conductor repairing method is used for repairing by winding an aluminium wire on a split conductor by using the power transmission line conductor repairing robot. By means of the power transmission line conductor repairing and winding device, the robot and the conductor repairing method disclosed by the invention, the current transmission capability of a power transmission conductor can be improved; therefore, the conductor repairing working efficiency can be greatly increased; the labour intensity can be reduced; and the conductor repairing security can be improved.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Iron-based abrasion resisting and reducing surfacing flux-cored wire

The invention relates to an iron-based abrasion resisting and reducing surfacing flux-cored wire. The current abrasion resistant surfacing welding wires and alloys have many types; some abrasion resistant surfacing welding wires and alloys have high abrasion resistance and can protect the surfaced tools or parts, but have poor abrasion reduction performance and cannot effectively prevent other contacted parts or components from being abraded; some surfacing alloys have the abrasion reduction performance but lose the abrasion resistance. The iron-based abrasion resisting and reducing surfacing flux-cored wire comprises a low-carbon steel sheathing, and flux-cored powder; and the wire includes the following alloy elements in percentage by weight: 0.2 to 0.8% of carbon, 5 to 20.0% of chromium, 1.0 to 7.0% of titanium, 0.3 to 5.0% of boron, 0.1 to 1.5% of silicon, 0.2 to 2.0% of manganese, and the balance of iron. According to the iron-based abrasion resisting and reducing surfacing flux-cored wire, the abrasion resisting surfacing alloy has high hardness, and good toughness and matching performance, and is hard to crack, and has both the abrasion resistance and the abrasion reduction performance, and achieves high abrasion resistance along with high abrasion reduction performance.
Owner:王新虎

Production method of high-strength, high-conductivity and heat-resistant copper alloy

The invention discloses a production method of a high-strength, high-conductivity and heat-resistant copper alloy, and belongs to the technical field of copper alloy machining. Accoding to the production method of high-strength, high-conductivity and heat-resistant copper alloy, the inner liner of a crystallizer adopted in the upper-induced continuous casting process is a carbon-carbon composite material so as to ensure the lubrication, high heat conduction and high temperature resistance properties; the temperature of the upper-induced continuous casting is 1180-1230 DEG C, the casting temperature is low so that the problem that molten liquid in the crystallizer is difficult to solidify and the crystallizer inner liner is worn during casting can be effectively avoided; the pressure of protective gas nitrogen in the liquid surface of an upper-induced furnace is controlled to be 0.2-0.7 atmosphere, so that the phenomenon of solid-liquid interface separation in the crystallizer is avoided, and a copper-chromium alloy product with larger weight and length is produced; according to the production method of the high-strength, high-conductivity and heat-resistant copper alloy, the cheapelement (Mg) is used for replacing the rare noble metal, and the mechanical property and the softening resistance property of the copper-chromium alloy are improved; and the production method is a non-vacuum and short-process preparation technology, the cost is low, and the production method is suitable for large-scale industrial production and has important economic and social significances.
Owner:CENT SOUTH UNIV

Frequency-division multiplexing (FDM)-based three-dimensional (3D) printer

The invention discloses a frequency-division multiplexing (FDM)-based three-dimensional (3D) printer, comprising a frame, a base, an X-axis mobile system, a Z-axis mobile system and a printing device, wherein the printing device is connected with the X-axis mobile system; the X-axis mobile system is connected with the Z-axis mobile system; the Z-axis mobile system is connected with a guide rail of an upright post; a power supply and a controller are arranged on the base; the controller is connected with the Z-axis mobile system; the Z-axis mobile system comprises a third numerical control motor, a left screw and a right screw, a Z-axis fixed base and a limit switch; the left screw and the right screw are respectively arranged at the outer sides of a left upright post and a right upright post; the third numerical control motor is connected with the lower ends of the screws; the screws are connected with screw nuts; the screw nuts are connected with the Z-axis fixed base; the Z-axis fixed base is connected with the X-axis mobile system; a fixed base through hole is formed in the Z-axis fixed base; the left upright post and the right upright post pass through the fixed base through hole; the bearing is matched with the guide rail of the upright post. Thus, the FDM-based 3D printer is simple and compact in structure, small in volume and low in manufacturing cost.
Owner:UNIV OF JINAN

Flexible screen mobile terminal capable of hiding camera

The invention discloses a flexible screen mobile terminal capable of hiding a camera. The flexible screen mobile terminal comprises a camera assembly, a main terminal body provided with a first face of the main body, an auxiliary terminal body provided with a first face of the auxiliary body, and a flexible screen simultaneously lapped on the first face of the main body and the first face of the auxiliary body, wherein the flexible screen is movably connected with one of the main terminal body and the auxiliary terminal body, the main terminal body and the auxiliary terminal body can be connected in a relative movement manner, the main terminal body and the auxiliary terminal body can rotate relative to an axial line of a plane where the flexible screen is located, and the camera assembly is installed on the main terminal body or the auxiliary terminal body and is selectively hidden on the back side of the flexible screen. According to the flexible screen mobile terminal disclosed by the invention, the selectively hidden camera assembly is provided, the camera assembly is hidden on the back side of the flexible screen at an unused state to avoid abrasion of the camera assembly caused by direct contact with a foreign body and avoid damage and even drop of the camera assembly caused by collision of an external force, so that the service life of the camera assembly is effectively prolonged.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Adjustable non-abrasion take-up reel

The invention discloses an adjustable non-abrasion take-up reel and belongs to the field of take-up devices. The adjustable non-abrasion take-up reel comprises discs and take-up shafts. Each disc comprises a disc body, a fixing ring, connecting plates, first bolts and a rotary shaft sleeve. Each take-up shaft comprises a connecting shaft and a fixing plate, wherein the connecting shaft comprises a first drum-shaped connecting rod, two arc-shaped blocks and a first rectangular block, the fixing plate comprises a second drum-shaped connecting rod and two second rectangular blocks, the same portions of the first rectangular block and each second rectangular block are each provided with at least two threaded holes at equal intervals, and bolts are arranged on the threaded holes and fixed through nuts. The circle center of each disc is located on the line connecting the centers of circles where the two corresponding arc-shaped blocks are located, and the arc-shaped surface, backing onto the circle center of the corresponding disc, of each arc-shaped block is plated with tinfoil. By the adoption of the adjustable non-abrasion take-up reel, contact between metal particles and cables or metal wires and rods can be avoided, so that abrasion is reduced, surface quality is improved, and production requirements are met; the length of the take-up reel can be adjusted according to production requirements by means of the special structure of the take-up shaft, and therefore flexibility and practicality are improved.
Owner:芜湖市海源铜业有限责任公司

Ultrasonic wave wind speed anemoscope and corresponding multiple meteorology parameter measuring instrument

The invention relates to a meteorology apparatus instrument and especially discloses an ultrasonic wave wind speed anemoscope and a corresponding multiple meteorology parameter measuring instrument. The wind speed anemoscope comprises four ultrasonic sensors which are arranged on a same horizontal plane. The four ultrasonic sensors are controlled by a single chip microcomputer operation control circuit to send or receive an ultrasonic wave. Time between the ultrasonic wave sending and the ultrasonic wave receiving can be recorded so that an actual wind speed and a wind direction can be calculated. Wind cup wearing caused by long-time mechanical rotation can be avoided so that a service life can be prolonged. The multiple meteorology parameter measuring instrument integrates a plurality of function modules, such as the wind speed anemoscope, a temperature sensor, a humidity sensor and a pressure sensor, through the single chip microcomputer operation control circuit so that the overall structure of the instrument is concise and compact. Therefore, installation and usage are more convenient. A plurality of mechanical movement parts in a traditional measuring system are not needed. Stability and reliability of the instrument can be improved.
Owner:SHENZHEN FLYING WIS INSTR
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products