11 results about "Piano wire" patented technology

To prevent forgetting to turn off a switch of an accessory used by hanging such as a strap or an earring when not in use and to save power.SOLUTION: An LED element 2 and a battery 3 are placed in a battery box 18, and the element 2 is provided with an anode lead terminal 10 and a cathode lead terminal 11. An anode 3a of the battery 3 is in contact with a bent portion 10a at the tip of the anode lead terminal 10, and the lead terminal 11 is in contact with a cathode 3b of the battery. Both ends of the piano wire 5 serving as a spring body are held in contact with the inner wall surface of the box 18, and the center portion is fixed to the insulating plate 4. The lead terminal 10 is fixed to one main surface of the insulating plate 4, the other main surface of the insulating plate 4 is slidably held on the surface of the battery cathode 3b, and a hanging part 14 is provided at the upper end of the insulating plate 4. Inside the box 18, the element 2 is provided with a pressure contact member 17, which presses and maintains contact between the cathode lead terminal 11 and the battery cathode 3b.SELECTED DRAWING: Figure 2

An ankle-foot orthosis having a foot plate defining a foot bed contoured to underlie the foot of the wearer, a flexible cuff configured to wrap around at least a portion of the shank of the wearer, and a strut assembly comprising a plurality of metal wires connecting the foot plate to the cuff. The plurality of metal wires may include piano wires. The foot plate may be fabricated with a computer aided manufacturing process.

To provide a shape-retaining ring for a landing net, which can be inserted and removed freely through the mesh of a net bag, thereby tensioning the net bag in a circular opening state at all times. [Solution] The device is made up of a metal wire (10) having elastic restoring force such as piano wire, a soft joint tube (11) that connects both cut ends (10a) and (10b) of the metal wire together, and a hard cover tube (12) inserted into and fixed to the middle part (11c) of the joint tube. One half (11a) of the joint tube is inserted into and fixed to one cut end (10a) of the metal wire, and the other cut end (10b) of the metal wire is inserted into the other half (11b) of the joint tube so as to be freely inserted and removed until it butts against the cut end (10a), thereby forming an endless circular shape.

The invention relates to the technical field of silicon carbide treatment, and discloses a method for processing silicon carbide by gasifying a steel wire, which comprises the following steps of: rotating an eight-inch SiC wafer in a hydrogen or chlorine atmosphere at the rotating speed of 10RPM, cutting by using the steel wire, pressing a roll-to-roll piano steel wire on the wafer, and reversely moving at the speed of about 1m / min; a piano steel wire penetrates through a quartz cover, chamber pressure chlorine powder is introduced into the quartz cover, and the steel wire is clamped by graphite electrodes at two ends, is electrified and heated to about 900 DEG C, has a diameter of 30-300 microns, is tightly pressed on the edge of a wafer and reversely slides at a high speed, so that the edge of silicon carbide is gasified into SiCl4 or SiH4 steam, and the SiCl4 or SiH4 steam is discharged and is used for completely cutting off crystals. The method for processing silicon carbide through steel wire gasification does not need diamond particles, is high in cutting precision, high in efficiency and low in cost, and is suitable for cutting, preliminary grinding and surface treatment of SiC wafers in semiconductor manufacturing.

To provide a weed-killing hook with a handle. [Solution] A hook (1) is attached to one end of a steel wire (piano wire), and the other end is fixed to a wooden handle (4). The hook is hooked around the base of the weed and pulled to remove it. The hook of this device is small, and the weed can be identified by its movement, preventing accidental damage to the plant or flower. Furthermore, the hook of this device can sever the roots of the weed beforehand in the soil, simultaneously removing most of the roots and the above-ground part, thereby suppressing weed regrowth. Furthermore, since the handle can be extended, the worker's movements are reduced, reducing the burden on the worker. With conventional weeding methods such as sickles, it is difficult to work without damaging adjacent plants or trees, and damage is unavoidable. Furthermore, the worker must move frequently, which places a heavy burden on the worker. This device aims to solve these problems.

The invention relates to the technical field of piano wire fusing equipment, and discloses a piano wire fusing device which comprises a take-up and pay-off assembly, a guide assembly, a wire pulling assembly and a positioning heating assembly, the guide assembly is located on one side of the take-up and pay-off assembly and used for guiding a piano wire, and the wire pulling assembly is parallel to the wire connecting direction of the take-up and pay-off assembly and the guide assembly; the guide assembly is used for clamping and pulling the piano wire, and the positioning and heating assembly is located on the side, away from the take-up and pay-off assembly, of the guide assembly and used for positioning and heating the piano wire; the piano wire is automatically fed and recycled through the take-up and pay-off assembly, the guide assembly accurately guides a conveying path, the wire pulling assembly clamps and pulls the piano wire to the positioning and heating assembly, and after the positioning and heating assembly completes accurate positioning and heating, the wire pulling assembly and the take-up and pay-off assembly cooperatively and reversely pull to achieve fusing. According to the structure, re-threading by manpower or external equipment is not needed, the problem that the production efficiency is low due to the fact that manual threading is needed after a traditional device is fused is solved, and the single-time fusing period is greatly shortened.

The present invention provides a device and method for measuring the vertical line of the geometric shape of a ship lock miter gate. The device includes a magnetic base for supporting and fixing the entire device. A vertically arranged screw is fixed to the top of the magnetic base. A plurality of height-adjustable adjustment nuts are mounted on the screw through threaded engagement. A bracket is fixed to the outer wall of each adjustment nut. A fixed pulley is adjustably mounted on the bracket via a locking nut. A measuring piano wire is wound around the fixed pulley, and a plumb bob is fixedly connected to the bottom end of the measuring piano wire. Placing the device on the top of the miter gate column avoids the problems of requiring multiple people for installation and disassembly, long installation and adjustment time, large investment in manpower and equipment resources, low efficiency, and high safety risks.

This invention discloses an optimization method for the production process of piano wire, comprising the following steps: selecting three groups of high-carbon steel wire rod raw materials, designated as control group steel wire raw material A, control group steel wire raw material B, and control group steel wire raw material C; treating control group steel wire raw material A with a salt bath process; treating control group steel wire raw material B with a salt bath process; treating control group steel wire raw material C with a salt bath process; preparing piano wire from high-carbon steel wire rod A, high-carbon steel wire rod B, and high-carbon steel wire rod C respectively, obtaining piano wire A, piano wire B, and piano wire C; testing piano wire A, piano wire B, and piano wire C to obtain performance data A, performance data B, and performance data C; comparing performance data A, performance data B, and performance data C to obtain performance references for piano wires prepared from raw materials quenched in medium-temperature salt bath, high-temperature salt bath, and low-temperature salt bath; recording and archiving the data for later retrieval.

The application discloses a kind of methods and auxiliary devices for constructing rolling hidden center line, as method includes the following steps: 1) using laser tracker to measure rolling mill, find the rolling center line of rolling mill;2) determine the vertical line perpendicular to the rolling center line;3) in the entry side, exit side of rack, auxiliary device is respectively arranged;4) the base of fixed auxiliary device;5) make the line groove on center target coincide with the rolling center line;6) record each auxiliary device in its pointer is located at the scale of scale;7) with piano wire sequentially through each auxiliary device center target line groove and tighten piano wire, thereby to the rack is centered and calibrated.The application establishes stable rolling hidden center line, so that when the rolling mill is centered and calibrated, it is not necessary to measure the rolling center line again by laser instrument, so that the determination of rolling center line is more convenient, saves human resources, improves work efficiency, and guarantees safety production.

The invention relates to an installation and measurement device and an installation and measurement method for a water distribution ring pipe of a water-turbine generator set. The device comprises a rotary measuring device which is used for being installed at the center position of the water-turbine generator set and comprises a measuring arm which is rotatably arranged and a distance measuring instrument which is arranged at the tail end of the measuring arm; the measuring surface conversion equipment is used for being arranged on a flange surface of a branch pipe of the water distribution ring pipe, the measuring surface conversion equipment comprises a measuring flange, the measuring flange is used for being vertically opposite to the distance measuring instrument, and a measuring line is arranged on the measuring flange and is used for being matched with the distance measuring instrument to work. Compared with a traditional manual measurement mode with the help of a piano wire and a tape, the installation measurement device can automatically complete distance measurement, the measurement precision and the measurement efficiency are high, and the installation construction period and the construction quality of the water-turbine generator set and the water distribution ring pipe of the water-turbine generator set can be guaranteed.

The application relates to a high-strength fatigue-resistant piano wire production process and belongs to the technical field of piano wire production. The process comprises the following steps: S1, raw material preparation, S2, melting and casting forming, S3, cold drawing, S4, surface cleaning, S5, heat treatment, S6, cooling treatment, S7, post-treatment and S8, surface treatment; piano wire is subjected to lead bath quenching by adopting a closed lead bath equipment in the step S5, the lead bath equipment comprises a lead bath seat, a lead bath cavity is arranged in the inside of the lead bath seat and is used for containing the lead bath, a feeding port is arranged on one side of the lead bath seat, a sealing door is arranged at the feeding port, an exhaust pipe for discharging lead vapor is arranged on one side of the lead bath seat, and a discharge pipe for discharging the lead bath is arranged on the bottom of one side of the lead bath seat. The lead bath equipment does not need an additional air extraction system, not only the investment of the equipment is reduced and the production cost is lowered, but also the normal discharge of lead vapor can be met, and the safety of the working environment is improved.