16results about How to "Reduce overall outer diameter" patented technology

The invention relates to the technical field of motors, and provides a rotating mirror motor and a laser radar. The rotating mirror motor comprises a rotor assembly, a fixing structure and an angular position sensor, the rotor assembly comprises a shell, a rotating shaft and a magnetic pole, the fixing structure comprises a stator assembly, a mounting sleeve and a base, the mounting sleeve is partially located in the shell and partially extends out of the shell through an opening, and the mounting sleeve movably sleeves the rotating shaft. The stator assembly is installed on the outer side of the installation sleeve in the shell and used for generating a rotating magnetic field for driving the magnetic poles to rotate, the base is installed on the installation sleeve outside the shell, the angular position sensor comprises a trigger piece and an induction piece, the trigger piece is installed at the second end of the shell, and the induction piece is installed on the surface of the side, close to the shell, of the base. The outer diameter of the shell does not need to be enlarged to wrap the angular position sensor and other components, the outer diameter of the shell and the outer diameter of the rotating mirror can be reduced, the miniaturization design of the laser radar is facilitated, and the laser radar can be installed on equipment with a narrow space.

This invention belongs to the field of cable technology, specifically a thin-walled oxygen-barrier high-temperature resistant cable, comprising a conductor core and a thin-walled outer sheath. The conductor core has a high-temperature resistant insulation layer made of polyetheretherketone (PEEK) composite material on its outer side. Between the high-temperature resistant insulation layer and the thin-walled outer sheath, from the inside out, are sequentially arranged a ceramicized oxygen barrier layer and a flame-retardant reinforcement layer. The ceramicized oxygen barrier layer is a nano-modified ceramicized silicone rubber layer with a thickness of 0.05–0.15 mm, including an outer layer doped with silicon carbide whiskers and an inner layer doped with zinc borate. This invention prepares an ultra-thin ceramicized layer through gradient doping, resolving the contradiction between thin-walled design and oxygen barrier properties, and effectively improving the interfacial peel strength. This reduces the cable's outer diameter and bending radius, making the cable lightweight and suitable for high-dynamic applications.

The present invention discloses a high-strength tethered cable, comprising an optical unit part, an electrical unit part and a reinforcement unit part. The optical unit part comprises an optical fiber core layer, and an optical fiber tight sleeve layer and a metal armor layer sequentially wrapped around the optical fiber core layer; the electrical unit part comprises a multi-core copper alloy conductor, and a first insulating layer and a second insulating layer sequentially wrapped around the multi-core copper alloy conductor; the reinforcement unit part comprises a filling layer, a braided armor layer and a protective layer; the filling layer, the optical unit part and the electrical unit part are geometrically formed into a circle and are recorded as a semi-finished product, and the filling layer is filled outside the optical unit part and the electrical unit part; the braided armor layer is woven outside the semi-finished product, and the protective layer is wrapped around the braided armor layer. The high-strength tethered cable of the present invention has good heat dissipation performance, high temperature resistance, and high tensile strength, which is conducive to improving the flight altitude of the unmanned aerial vehicle, while ensuring long-term stable operation. The present invention also provides a preparation method of a high-strength tethered cable with a simple process.

The present invention proposes a charging device for mine blasting, which relates to the field of blasting equipment. A charging device for mine blasting includes a plurality of detachably connected connecting joints, the connecting joints are provided with a charging barrel, the charging barrel includes an upper cover, a barrel body and a lower cover, the upper cover and the lower cover are respectively covered at the upper and lower ends of the barrel body, the barrel body and the connecting joint are connected by a connecting rod, the upper cover and the lower cover are both provided with perforations, the connecting joint is penetrated in the perforations, and the connecting joint is also provided with a guide hole for the passage of a detonating cord; the present invention adopts the structure of the connecting joint and the charging barrel, which can accurately determine the charging position and spacing distance of the interval charging, and can be transported in batches and sections, which can meet the transportation needs of blasting devices with different charging amounts, and make the charging device more stable and safe during the transportation process, which can achieve intermittent, continuous and semi-continuous operations, which can be suitable for large-scale mechanical construction, and can also be constructed by manpower, with high flexibility and low use cost.

The application relates to the technical field of special cables, in particular to a high-reliability environment-friendly composite fluoroplastic cable for rail transit and a preparation method thereof. The cable comprises, from inside to outside, a cable core, a water-blocking layer, a shielding layer, an armoring layer and a composite sheath layer. The insulating core of the cable core is provided with a modified fluoroplastic insulating layer, wherein nano calcium hydroxide is added as a hydrogen fluoride absorbent and ETFE resin is added as a toughening agent; the armoring layer adopts a double-layer interlocking steel belt armoring structure; the composite sheath layer comprises a thickened inner sheath layer and a high-hardness modified fluoroplastic outer sheath layer; and a distributed optical fiber temperature sensor is implanted in a center filling rope.

The utility model discloses a gas spring telescopic support rod which comprises a lower sleeve and an upper sleeve, the upper sleeve is sleeved in the lower sleeve, a gas spring which is vertically arranged is arranged in the lower sleeve, the upper end portion of the gas spring is connected with the upper sleeve through a spring connecting piece, the spring connecting piece is fixedly arranged in the upper sleeve, and the gas spring is arranged in the upper sleeve. A pulley is arranged at the upper end of the spring connecting piece and fixedly arranged at the upper end of a pulley fixing piece, the pulley fixing piece is fixedly arranged in the lower end of the upper sleeve, a pulley pull rope is arranged at the upper end of the pulley, the upper end of the pulley pull rope is fixed in the upper sleeve, and the lower end of the pulley pull rope is fixed in the lower sleeve. The gas spring support has the advantages that the design is novel, the structure is simple, the telescopic convenience is improved through the pulley principle, and the outer diameter and the length of the gas spring are reduced, so that the internal space of the support rod is reduced, and the product cost is reduced.

The utility model discloses an anti-seepage container mouth assembly which comprises a bottle mouth which is located on a bottle neck on the top of a bottle body or a barrel body and provided with external threads, an outer cover connected to the bottle mouth in a screwed mode, an inner cover plugged in the bottle mouth and located in the outer cover, and a circle of sunken annular steps arranged on the inner side of the top end of the bottle mouth. The outer diameter of the outer flange of the inner cap is smaller than the diameter of the annular step, so that the inner cap sinks into the bottle neck; a sealing gasket which can hermetically abut against the top surface of the bottle neck and the top surface of the inner cap is arranged on the lower side of the inner top surface of the outer cap; the outer flanging of the inner cover and the annular step form annular line sealing contact; the outer side face of the inner cap and the inner wall face of the bottle neck are in circumferential contact to form sealing connection. A sunken annular step is arranged on the inner side of the top end of the bottle neck, so that the inner cap is arranged below the top surface of the bottle neck and in the bottle neck, and a sealing gasket is arranged on the top end surface of the bottle neck to realize primary sealing; a sealing contact ring is constructed at the outer flanging of the inner cap and the annular step, and a linear contact sealing ring is constructed on the outer side surface of the inner cap and the inner wall surface of the bottle neck, so that a multi-sealing double-cap structure with better sealing performance is formed.

The utility model discloses a bearing and rigid wheel integrated harmonic module which comprises an input shaft, a wave generator arranged on the input shaft, a first supporting bearing and a second supporting bearing arranged on the two sides of the wave generator respectively, a flexible bearing arranged outside the wave generator, and an encoder assembly arranged at one end of the input shaft. A bearing outer ring and a rigid wheel are integrated, a rolling body is arranged between a bearing inner ring and the bearing outer ring, and the rolling body is arranged on the outer side of a cup-shaped flexible wheel cylinder body, so that the axial length and the outer diameter are effectively shortened, a wave generator is integrated with the input shaft, and the speed reducer assembly is arranged at the other end of the input shaft. The inner ring of the bearing is fixedly connected with the cup-shaped flexible gear to form the output shaft, and the inner teeth of the rigid gear are meshed with the outer teeth of the cup-shaped flexible gear, so that the integral weight is relatively light, and the integral rigidity can be effectively improved.

The present application provides a valve stent and a prosthetic valve having the same, and belongs to the technical field of cardiac valves. The valve stent comprises a stent body, a positioning ring and elastic connection wires, wherein the positioning ring in a compressed state is adapted to be arranged in series with the stent body sequentially along an axis thereof, and when the positioning ring has elastically deformed from the compressed state to a propped open state, the positioning ring becomes coaxially sleeved on the stent body due to traction of the elastic connection wire. In the valve stent of the present application, after being implanted, the positioning ring can automatically expand to reach the propped open state by elastic deformation, and due to the traction of the elastic connection wire, the positioning ring can become coaxially sleeved on the stent body. Therefore, in the process of an implanting surgery, the positioning ring and the stent body can be positioned at the same time. Due to the traction of the connection wire, the stent body can be automatically positioned according to the location of the positioning ring, so that respective positioning operations of the positioning ring and the stent body are dispensed with, and the surgery operation can be made simple and convenient.

The present invention discloses a laser cladding device with a wide range of adjustable duty cycle, comprising a parabolic focusing mirror, a first conical mirror, a second conical mirror and a powder spraying device. The parabolic focusing mirror and the second conical mirror are both annular, and the reflection surfaces of the first conical mirror and the second conical mirror are opposite to the reflection surface of the parabolic focusing mirror, so that the light beam incident on the first conical mirror and the second conical mirror from the central axis of the parabolic focusing mirror is reflected toward the circumference by the reflection surfaces of the two and incident on the reflection surface of the parabolic focusing mirror, and is further reflected and focused by the reflection surface of the parabolic focusing mirror. The position of the second conical mirror is fixed, the first conical mirror can be moved along the central axis of the parabolic focusing mirror, and the powder spraying device is arranged below the second conical mirror. The laser cladding device with a wide range of adjustable duty cycle of the present invention can change the duty cycle without changing the outer diameter of the annular light beam, and the adjustment range of the duty cycle is large.

This invention discloses a method for winding a superconducting magnet, relating to the field of superconducting magnet technology, comprising the following steps: (1) preparing a REBCO tape without a metal protective layer; (2) preparing a metal tube and heating the metal tube; (3) connecting the silver layer of the REBCO tape to the metal tube; (4) clamping the base tape and buffer layer of the REBCO tape, rotating the metal tube, and winding a first coil on the metal tube; (5) stopping the rotation of the metal tube after the first coil has been wound to a set number of turns, and cutting the REBCO tape; (6) repeating steps (3)-(5) to wind a second coil on the metal tube; (7) plating silver on the circumferential outer surfaces of the first and second coils; (8) performing an oxidation annealing heat treatment on the first and second coils. This invention significantly reduces the volume and outer diameter of the superconducting magnet formed by winding the superconducting magnet, resulting in a more compact structure and the ability to generate a higher magnetic field strength.

This application belongs to the field of water heater technology, specifically relating to a heat exchange component and a water heater. The heat exchange component includes: an inlet pipe with an inlet port; an outlet pipe with an outlet port; and multiple heat exchange tubes, one end of which is connected to the inlet pipe, and the other end of which is connected to the outlet pipe. The heat exchange component and water heater provided by this application can solve the problem of low heat exchange efficiency in actual use of heat exchange components.

The utility model relates to medical instrument technical field especially a ventricular peritoneal shunt pass bar. The utility model discloses pass bar subassembly, handle, guide piece and shunt tube fixed subassembly, pass bar subassembly includes the pass bar body of being placed in the patient's skin and the installation sleeve of being fixed in the pass bar body front end end portion, shunt tube fixed subassembly includes the installation post of being detachably installed in the inside of installation sleeve, the disc that is fixed in the installation post front end end face and with installation sleeve front end end face abuts and the plug rod of rotating being arranged in the disc front disc surface middle part and being inserted in the shunt tube spout, the guide piece detachably sets up in the installation sleeve outside, the handle is fixed in the pass bar body rear end. The device can reduce the external diameter of pass bar subassembly whole under the condition of keeping the shunt tube diameter invariable to reduce the injury to the child when puncturing.

The present invention relates to an optical fiber ribbon that provides a high-capacity communication network, is capable of being rolled in a width direction so as to efficiently use a space in a conduit, minimizes separation between ribbons constituting the optical fiber ribbon or damage to optical fibers during a rolling process, and facilitates overall connection or branching at a connection end.

The invention discloses an insulating material for a light submarine cable, a preparation method of the insulating material and the light submarine cable, and relates to the technical field of submarine cables. The insulation material for the light submarine cable prepared by the invention is prepared from the following raw material components in parts by weight: 65.4 to 65.6 parts by mass of modified polypropylene, 13 to 15 parts by mass of modified boron nitride, 19 to 21 parts by mass of a composite flame retardant and 0.4 to 0.6 part by mass of an antioxidant, wherein the modified polypropylene is obtained by modifying polypropylene with allyl-terminated cyclotriphosphazene; the modified boron nitride is obtained by modifying hydroxylated hexagonal boron nitride with vinyl trimethoxy silane; the composite flame retardant is prepared by compounding 12.92 to 14.28 parts by mass of ammonium polyphosphate and 6.08 to 6.72 parts by mass of melamine; the insulating material prepared by the invention is relatively good in flame retardance, thermal conductivity and mechanical property.

The invention relates to a switching device having a housing with a front wall, a rear wall, a top wall, a bottom wall and two side walls, in which an air channel is formed parallel to the side walls and having a clear width D, and having a rotational axis, the rotating shaft extends from the front wall to the rear wall and is rotatably mounted in the front wall with a first end section and in the rear wall with a second end section, the rotating shaft carries a rotating device at the end of the first end section, and the rotating device is connected with the rotating shaft in a rotationally fixed manner and can be accessed from the outer side of the front wall; the rotary shaft carries a coupling device, which is connected to the rotary shaft in a rotationally fixed manner, at the end of the second end section, by means of which the switchgear can be fastened to the respective receiving device, and the bottom wall and the top wall each have at least one ventilation opening such that an air flow in the air channel flows from the bottom wall to the ventilation opening of the top wall, the rotating shaft has an intermediate section located between the first and second end sections, which intermediate section has an outer diameter d and is located in the air channel, and the rotating shaft is designed as a hollow shaft with a ratio D / d greater than 1.5.