124results about How to "Enough length" patented technology

The invention relates to a method of producing carbon nano-tube yarn, comprising the following steps: providing a plurality of carbon nano-tube arrays; drawing one carbon nano-tube array to obtain a first carbon nano-tube structure; drawing the other carbon nano-tube array to obtain a second carbon nano-tube structure; contacting one end of the second carbon nano-tube structure with one end of thefirst carbon nano-tube structure, which is close to the carbon nano-tube arrays, along the drawing direction to obtain a lengthened carbon nano-tube tube structure; repeatedly contacting one end of the second carbon nano-tube structure with one end of the first carbon nano-tube structure to further lengthen the carbon nano-tube tube structure; and processing the carbon nano-tube tube with organicsolvent to obtain the carbon nano-tube yarn.

The present invention relates to processes for producing nanowires and nanotubes by treating a fiber comprising at least one support material and at least one thermoelectrically active material or a precursor compound of a thermoelectrically active material, to a nanowire comprising at least one thermoelectrically active material and having a diameter of <=200 nm and a length of >=1 mm, to nanotubes comprising at least one thermoelectrically active material and having a diameter of <=200 nm, a wall thickness of <=30 nm and a length of >=1 mm, and to the use of the nanowires or nanotubes for thermoelectric heating, for electricity generation, in sensors or for temperature control.

The invention discloses a volute structure, a centrifugal compressor and refrigeration equipment, and relates to the field of refrigeration equipment. An existing centrifugal compressor structure is optimized. The volute structure comprises a box body, a volute body and a return device. The volute body comprises an inner volute and an outer volute independent from the inner volute. A fluid channel is formed between the inner volute and the outer volute. The inner volute and the return device are arranged together. According to the technical scheme, the length of the section of a primary pressure expander can be increased so that the pressure expansion effect of gas entering the primary pressure expander can be improved, and then the unit performance of the centrifugal compressor is improved.

The invention provides a temperature cycling test device for an OPPC (optical fiber composite phase conductor) connector box and a test method. The test method is used for studying the performance change of the OPPC connector box at an extremely low temperature and an extremely high temperature so as to ensure safety and stability in operation of the practical engineering. The test device comprises an auxiliary extension optical cable, a high / low-temperature test box and an optical fiber attenuation tester (or optical time-domain reflectometer); and the test method comprises the steps of: splicing and coiling optical fiber in the connector box body, sealing the connector box body, splicing test auxiliary extension OPPC optical cable, configuring the optical fiber attenuation tester, performing an attenuation test method and the like. In the invention, the high / low-temperature test box simulates the dynamically changing external environment for the OPPC connector box so that the temperature range of the high / low-temperature cycling test is flexible and controllable and better conforms to the practical environment; and in the splicing of the test auxiliary extension OPPC optical cable, a long-enough optical fiber channel is provided for the optical fiber attenuation monitoring by connecting the optical fibers in series, thereby ensuring the reliability of the test result.

The invention discloses a positioning device for achieving embedded-sectional steel flat-joint bolt connection of concrete sectional prefabricated arch ribs and a construction method of the positioning device. The positioning device is arranged at a junction of the concrete sectional prefabricated arch ribs, and comprises a pair of rectangular flanges adopting the same structure, wherein the two rectangular flanges are arranged at the centers of the prefabricated arch ribs respectively; each rectangular flange comprises a flange panel and a flange side plate; bolt connection holes are formed in the flange panels; the flange panels of the two rectangular flanges are fixedly connected through bolts; one end of each flange side plate is connected with the corresponding flange panel; spikes connected with concrete on the prefabricated arch ribs in an embedded manner are arranged at the other ends of the flange side plates. The positioning device is used for rapid positioning and connection of the sectional prefabricated arch ribs, shortens the construction period, improves the adjusting speed and the adjusting accuracy of arch axes of the sectional prefabricated arch ribs, reduces additional unfavorable eccentricity at a joint of the arch ribs, and improves the force performance of a wet joint of the arch ribs.

The invention discloses a dust collector and aims to provide the dust collector, which can effectively collect dust and garbage in any position and at any corner, is high in cleaning capability, can effectively separate garbage, impurities and dust during cleaning to ensure smooth pipeline and avoid damage to the internal structure, prolongs the service life and is good in using stability. The dust collector comprises a dust collector body, a dust cup, a mop and a coiling drum, wherein a motor is placed in a motor shell; an air outlet filtering part is connected with the motor shell; the dust cup is connected with the dust collector body and comprises a cup body, a cup cover and a bottom cover; the cup cover comprises a dust cup outer cover and a dust cup inner cover; an inner sealing ring is arranged between the dust cup inner cover and the cup body; a filter cover, a dust cup filter and a transparent pipe are arranged in the dust cup; a cyclone separator is sleeved with the dust cup filter; a rolling brush is arranged on the mop. The dust collector disclosed by the utility model has the benefit as follows: the functional integration is high, the integration effect is obvious, the internal structure is not easy to block and damage by garbage with large size, the using adaptability is high and the function is complete.

The present invention belongs to the field of tissue engineering and medical material technology, and is especially titanium net with fimbrin coating and its preparation process and application in reconstructing trachea default. The present invention prepares fimbrin-titanium net complex with medical titanium net as support material and fimbrin to form coating. Fimbrin has excellent biocompatibility and can promote the growth of fibroblast and mucosa cell, speed healing, reduce complications. Clinically, the present invention is used in repairing trachea default. The present invention is significant in the research of fimbrin in promoting repair of trachea mucosa, reconstructing trachea default and reducing complications during reconstructing trachea default.

The invention discloses a thermal conductive damping plug-in locking assembly for electronic equipment, and aims to provide a fast locking assembly controllable in force transfer and reliable in locking. The locking assembly comprises a bar sliding block (2) which is mounted on a bar base (1) and can slide, a plurality of oblique cylinders or oblique teeth arranged longitudinally are made on the bar base (1), the same number of oblique holes or oblique slots are formed in the bar sliding block (2), special-shaped elastic elements are mounted between the bottoms of the oblique holes or oblique slots of the bar sliding block and the tops of the oblique cylinders or oblique teeth of the bar base, and the oblique cylinders or oblique teeth on the bar base are inserted into the oblique holes or oblique slots of the bar sliding block; and under the coordination of a fixed limiting block (4) and a limiting block (6) mounted at two ends of the bar base, the bar sliding block is pulled or pushed via a screw (5) connected to the fixed limiting block and the bar sliding block, to drive an outer shell (3) to slide up and down on the bar base. The locking assembly is applicable to fast locking and fixation of an electronic module or a PCBA (Printed Circuit Board Assembly) installed in a case slot of the electronic equipment.

The embodiment of the invention provides an antenna assembly and an electronic device with a curly screen, and the electronic device comprises a mobile phone, a tablet personal computer and other mobile or fixed terminals with antennas. In the electronic device provided by the embodiment of the invention, an antenna radiator is located on a metal top frame or a metal bottom frame of the electronicdevice, and the extension branch knot extends into the electronic device and is connected with the antenna radiator, so the length of the antenna is increased, and the antenna radiation efficiency isensured; the problem that the length of the antenna which can be arranged on the mobile phone is insufficient due to the fact that the metal frame which can be used as the antenna is reduced in the existing mobile phone is solved.

The invention relates to the technical field of thermometers and discloses a surgical safety thermometer, comprising a safety cover and a thermometer body. A touch panel is fixed to the thermometer body. A rack is slidably connected inside the safety cover and is provided with a first wedged groove; the rack is abutted to a first wedge through the first wedged groove; a sector gear is rotationallyconnected inside the safety cover and is coaxially connected with a ratchet wheel, a pawl is slidably connected inside the safety cover, an ejector rod is abutted to the top end of the thermometer body, a fixing block is fixed to the bottom of the thermometer body and is provided with a second wedged groove, a second wedge is slidably connected inside the safety cover and is fitted with a first magnet, an electromagnet is fixed to the safety cover, and a startup mechanism is arranged in the safety cover. Compared with the prior art, the surgical safety thermometer has the advantages that thesafety cover protects the thermometer to ensure that a temperature bulb easily contacts the skin of the patient; the sector gear drives the rack to impact on the touch panel, medical personnel has noneed for shaking the thermometer body with great effort, and thermometer breaking is avoided.

The invention discloses a rotor wing replaceable portable four-rotor wing aircraft which comprises a plane body, four rotor wings and four rotors, wherein the four rotor wings are symmetrically arranged at four corners of the plane body; the four rotor wings and the plane body form a cross section; the four rotors are respectively arranged on the four rotor wings; the four rotor wings are in detachable connection with the plane body. Due to the detachable connection of the rotor wings and the plane body, when the rotor wing replaceable portable four-rotor wing aircraft is not used, the rotor wings can be dissociated from the plane body, so that the space occupied by the whole plane body can be reduced, and the rotor wing replaceable portable four-rotor wing aircraft can be conveniently carried over or transported; due to the detachable connection mode, spare rotor wings with rotors of different loads can be abutted and mounted according to different demands, so that the detachable connection is significant, and possibility is provided for replacing spare power equipment with different loads.

The invention provides a composite silicone oil emulsion. The composite silicone oil emulsion comprises the following main components in parts by weight: 10 to 15 parts of dimethyl silicone oil, 2 to3 parts of a polymethylacrylic acid polymeric dispersant, 0.2 to 0.7 part of polyoxyethylene aliphatic alcohol ether, 0.5 to 1 part of sorbitan esters of fatty acid, 1 to 1.6 parts of alkylphenol polyoxyethylene ether, 0.3 to 0.7 part of sodium sulfosuccinate, 0.2 to 0.5 part of a titanate coupling agent, 0.4 to 0.8 part of a silane coupling agent, and 28 to 32 parts of deionized water. The composite silicone oil emulsion is not layered and broken in high-speed centrifugation, high-temperature and long-term storage conditions, and has high stability. Titanium dioxide prepared through the composite silicone oil emulsion serving as a dispersing agent is good in dispersibility, particularly the oil-dispersing property is obviously enhanced, and good dispersibility can be still kept after thetitanium dioxide is stored for a long time.

The invention provides a lock cylinder fixed type mechanical anti-theft lock used for safes, and relates to the field of anti-theft locks. The lock cylinder fixed type mechanical anti-theft lock mainly aims at solving the problem that the related patented technology with a lock cylinder fixed type cross mechanical anti-theft lock as the core cannot be directly used together with the large safes ina matched manner. According to the scheme, a cam mechanism in the core technology mentioned above is omitted and is replaced with a lock block capable of reciprocating, the special structure of the lock block has the control effect, the same as that for the cam mechanism, for a lock cylinder set, and a jamming effect can be achieved for a lock bolt drive and transmission device by movably inserting a clamping pin, arranged on the lock drive and transmission device, in the lock block; during unlocking, unlocking is driven through wheel handles of overload protection devices arranged on the safes themselves, and keys can still only be inserted and pulled and cannot be rotated; and the existing patent core technology mentioned above and functions are not changed, the safety performance of the new product is remarkably improved, the lockset structure is substantially simplified, cost is low, and performance is stable and reliable.

The invention discloses a standard model layout design method suitable for shock wave / boundary layer interference and heat protection research. The method comprises the following steps of 1, determining left and right width contour lines of an aircraft, 2, determining upper and lower surface contour lines of the aircraft, 3, designing a section curve at the position x=L, 4, designing a cross section curve at x=xB, 5, designing a section curved surface from the point B to the point C, 6, designing a section curve at the position where x is equal to L1, 7, designing a section curved surface in front of the point B, 8, designing a section curved surface from the point E to the point E1, 9, designing a section curved surface of a compression corner area at the lower part of a section curve from the point E to the point E1, and 10, enabling the cross section curved surfaces obtained in the fifth step, the eighth step and the ninth step to be symmetrical about the zx plane, and enabling the curved surfaces obtained in the sixth step to be symmetrical about the zx plane and the xy plane. According to the method, the standard model layout suitable for shock wave / boundary layer interference and heat protection research can be designed.

A tripod in the present invention comprises: a platform, four feet and a linking part. The platform is used for supporting the tools machine and the top of it, and four feet is used for supporting the platform in the unfolding condition. The linking part comprises the first linking equipment, the second linking equipment, the third linking equipment and the fourth linking equipment, all of which link with four feet separately and connect with the platform. A first linking line is set between the first linking equipment and the second linking equipment for connecting with each other and the third and fourth linking equipment lying in the side of the first line. The stabilizer linking with the first linking equipment is near to the first linking line and far away from the third linking equipment; the stabilizer linking with the second linking equipment is near to the first line and away from the fourth linking equipment.

A side-mounted mopping machine capable of automatically cleaning mopping cloths comprises a vehicle body, the front mopping cloth, the rear mopping cloth, a front arm frame, a rear arm frame, a front rotating device, a rear rotating device, a cleaning pool, a water supply and drainage part and a control system. The lower end of a front lifting rod and the lower end of a rear lifting rod are connected with a front mopping cloth upper flat plate and a rear mopping cloth upper flat plate respectively, and the upper end of the front lifting rod and the upper end of the rear lifting rod are provided with the front rotating device and connected with the front end of the front arm frame and the rear arm frame respectively. The rear end of the front arm frame and the rear end of the rear arm frame are hinged to the vehicle body and provided with the rear rotating device. The two mopping cloths are automatically cleaned and used for mopping the floor in turn. The vehicle body is provided with a secondary and light sewage box and a clean water box. The cleaning pool is installed on the side edge of the vehicle body. When the mopping cloths are cleaned, the lifting rods, the arm frames and the rotating devices are matched with one another, the mopping cloths are lifted and moved into the cleaning pool, and the mopping cloths are stirred and washed with water in the secondary and light sewage box and the clean water box in sequence and then dewatered. Sewage generated in the first two times of cleaning is discharged to a sewage box, and the water generated in the last two times of cleaning after the mopping cloths are cleaned with clean water is discharged to the secondary and light sewage box. Cleaning water is greatly saved, so that mopping is cleaner, and the work efficiency is improved. The situation that the machine-mounted long-strip-shaped mopping cloths cannot be cleaned automatically is changed.

The invention provides a data transmission method used in a time division duplexing system. The method comprises: step 1, a data transmission terminal packages the data in a predetermined frame structure and sends the data to a data reception terminal, in the predetermined frame structure, the random access channel is provided inside the uplink transmission subframe; step 2, the data reception terminal analyzes and processes the data packaged in the predetermined frame structure.

The invention relates to a vertical-torsion coupled large-amplitude free vibration wind tunnel experiment system. The system comprises two symmetrically-installed supporting frames, the tops of the supporting frames are provided with at least two upper spring fixing arms, and the upper spring fixing arms are connected to the upper ends of upper springs; lower spring fixing arms are arranged at thebottoms of the supporting frames; the lower spring fixing arms are connected to the lower ends of lower springs; the lower ends of the two upper springs are connected through a rigid suspension arm;a bearing seat is mounted on the rigid suspension arm; two ends of a rigid test model are respectively fixedly connected to one end of a rigid shaft; the other end of the rigid shaft is fixedly arranged in the bearing seat; a hub is fixedly connected to the rigid shaft, a torsion center line of the rigid test model is collinear with the axis of the rigid shaft and the center line of the hub, the periphery of the hub is sleeved with and fixedly connected to the middle of a first flexible connecting piece, and two ends of the first flexible connecting piece extend downwards and are connected tothe upper ends of the lower springs respectively. The system is independently provided with a torsional rigidity system, so that the flexibility of the test device is improved.

The invention provides a motor, a compressor and refrigeration equipment. The motor comprises a stator, the stator is provided with a plurality of stator teeth arranged in the circumferential direction of the stator, and a stator slot gap is defined by every two adjacent stator teeth; each coil group comprises a plurality of coils wound on the stator teeth, and each coil correspondingly bypasses one corresponding stator tooth; the rotor is arranged in the stator, the rotor comprises a rotor iron core and a plurality of permanent magnets, a plurality of slots are formed in the rotor iron core,the plurality of slots are circumferentially distributed around the rotating center line of the rotor iron core, and the plurality of permanent magnets are arranged in the plurality of slots; the residual magnetism Br of each permanent magnet at 20 DEG C meets the condition that Br is greater than or equal to 1.2 T; the inner diameter phi si of the stator and the outer diameter phi so of the stator meet the condition that phi si / phi so is larger than or equal to 0.558 and smaller than or equal to 0.576. Motor operation noise reduction.

The invention provides a tunnel access control device, and belongs to the technical field of tunnel safety. The tunnel access control device includes a supporting base, a blocking device and an abutting member. The blocking device includes a blocking member and a driving mechanism. The blocking member comprises a fixed body and a moving body, the fixed body is rotatably connected with the supporting base, and the moving body can move relative to the fixed body to enable the blocking member to extend or shorten. The driving mechanism is used for driving the moving body to move relative to the fixed body. The abutting member is fixed to the supporting base, and when the moving body moves relative to the fixed body to enable the blocking member to shorten, the moving body can be in contact with the abutting member to push the fixed body to rotate upwards relative to the supporting base. When the tunnel access control device is opened, the center of gravity of the blocking device is movedback, so that the blocking device is ensured to be with a sufficient length at the blocking position, and the driving force required for the blocking device to rotate upwards is reduced.

The invention discloses a preparation method of a zinc telluride single crystal, and aims to solve the technical problem that the zinc telluride single crystal prepared through the existing method is low in quality. The technical scheme is that the preparation method comprises the following steps: putting a high-purity tellurium elementary substance and a synthesized zinc telluride polycrystal raw material into a quartz crucible for fused sealing under high vacuum; then putting the quartz crucible into an ACRT (Accelerated Crucible Rotation Technique) type five-temperature-region crystal growth furnace; firstly, heating the furnace at a certain heating rate, thus obtaining a preset temperature field, preserving the heat for a period of time, and cooling the crucible at a rate of 0.1 to 0.2 mm / h, wherein the temperature gradient for crystal growth is 10 + / - 1 DEG C / cm and the crystallizing temperature is 1,060 + / - 1 DEG C; and under a condition of keeping the temperature field in a growth process unchanged, after the crystal grows, cooling the crucible at 3 DEG C / h for 50 hours, then cooling the crucible at the rate of 5 DEG C / h for 100 hours, and finally turning off a power supply for furnace cooling. According to the preparation method, the ZnTe crystal with an enough length and high crystallizing quality is obtained.

An internal heat exchanger for an automotive air conditioner which is capable of securing length of the internal heat exchanger necessary for heat exchange by a double pipe even when an evaporator and an expansion valve are disposed where the distance to a partition wall is short. Between an expansion valve and evaporator, and a partition wall, a first double pipe is disposed which is formed by surrounding an inner pipe connected to an inlet port of the expansion valve with an outer pipe connected to an outlet port of the evaporator, and a second double pipe is disposed within an engine room which is formed by surrounding an inner pipe with an outer pipe, in a manner extended from the first double pipe. The first double pipe and the second double pipe are connected by a pipe connecting member such that the connecting portions of the pipes are prevented from disconnection.

The invention provides a glass cover plate and a manufacturing method thereof and an optical fingerprint sensor. The glass cover plate comprises a glass substrate; a modified area which is arranged in the glass substrate, wherein the thickness of the modified area is less than that of the glass substrate and the surface of the modified area is partial surface of the glass substrate; and multiple total reflection paths which are arranged in the modified area and perpendicular to the surface of the glass substrate and penetrate through the modified area. The modified area of the glass cover plate has high light transmittance and mechanical strength.

The invention discloses an aircraft with four fixed rotor wings. The aircraft comprises a fuselage, rotor wing arms and rotor wing power devices. Four rotor wing arms are arranged on four corners of the fuselage symmetrically; the four rotor wing arms and the fuselage are combined to form a cross structure; one rotor wing power device is fixed to each rotor wing arm; each rotor wing power device is composed of a cylindrical shell, a battery, a direct current motor, a speed governor and one rotor wing; the cylindrical shell is arranged at one end of the corresponding rotor wing arm and integrally formed with the corresponding rotor wing arm; the batteries, the direct current motors and the speed governors are fixed into the cylindrical shells; the batteries are used for providing power supplies for the direct current motors; the speed governors are used for adjusting the rotation speeds of the direct current motors; the direct current motors drive the rotor wings to rotate through transmission mechanisms. The safety and reliability of the aircraft are higher.

The invention discloses an ionization chamber of a photoionization gas detecting instrument based on a printed circuit board process, which is formed by placing two electrode plates which are the same completely in an overlapped way. The thickness of the ionization chamber of the photoionization gas detecting instrument based on the printed circuit board process is the sum of the thicknesses of the two electrode plates; each electrode plate comprises three welding pads; the three welding pads are respectively provided with a first through hole, a second through hole and a third through hole; the back surfaces of the two electrode plates are in contact with each other; the two electrode plates are mechanically fixed and electrically connected by respectively placing one contact pin in the first through hole, the second through hole and the third through hole; one contact pin is connected with an offset electrode; another contact pin is connected with a collecting electrode; and the third contact pin is grounded. By using the ionization chamber of the photoionization gas detecting instrument based on the printed circuit board process, a small enough volume is guaranteed, and an enough optical path length is also ensured, so that the gas entering the ionization chamber is adequately ionized.

The invention discloses a pressure regulating and power generating device for a small-sized natural gas pipe network. The pressure regulating and power generating device comprises a box body and further comprises a pressure regulating unit and a power generating unit which are arranged in the box body; the pressure regulating unit comprises a pressure regulating pipeline and further comprises a filter, a turbine flowmeter, a first pressure adjuster and a check valve which are arranged on the pressure regulating pipeline in sequence; a bleeder is arranged at a position, which is located betweenthe first pressure adjuster and the check valve, on the pressure regulating pipeline; a bleeding valve is arranged on the bleeder; the power generating unit comprises a power generating pipeline andcomprises a damper, an electromagnetic valve, a fluid motor and a second pressure adjuster which are arranged on the power generating pipeline in sequence; the fluid motor is coaxially connected witha power generator; the upstream end of the power generating pipeline is connected with the pressure regulating pipeline section between the turbine flowmeter and the first pressure adjuster; and the downstream end of the power generating pipeline is connected with the pressure regulating pipeline section between the first pressure adjuster and the bleeder. The pressure regulating and power generating device for the small-sized natural gas pipe network has the advantages of the simple structure, the high integration degree, small volume, easiness in control, safety and stability.

The invention discloses a universal wheel. The universal wheel comprises a universal wheel bottom plate (1) and universal wheel bodies (2), wherein universal wheel supports (4) are fixed at the bottom of the universal wheel bottom plate (1), and the universal wheel bodies (2) are fixed between the universal wheel supports (4); the universal wheel is characterized by also comprising a support plate (3) and a mounting shaft (5) fixed on the universal wheel supports (4), at least three universal wheel bodies are provided, and are matched on the support plate (3) in a rotating manner, the support plate (3) is matched on the mounting shaft (5) in a rotating manner, and the mounting shaft (5) is detachably connected with the universal wheel bottom plate (1). The invention provides the universal wheel which is simple in structure, high in reliability, convenient to assembly and disassembly, and adjustable in height and can easily pass over a barrier.

The invention discloses a contact support reaction spring installing structure and assembling method. The installing structure comprises a contact support, a reaction spring and a coil bobbin. The contact support is provided with a first boss which is used for being matched with one end of the reaction spring. The coil bobbin is provided with a second boss which is used for being matched with the other end of the reaction spring. The protrusion of the second boss is provided with a heightening part so that the reaction spring is enabled to be sleeved on the second boss which is sufficient in length and convenient for guiding by utilizing the mode of free falling of itself in a small clearance way. The heightening part of the second boss is provided with an avoiding part. When the reaction spring is compressed and the first boss of the contact support and the second boss of the coil bobbin are enabled to be overlapped, the avoiding part of the second boss forms avoidance for the overlapping part of the first boss of the contact support, and the set total stroke of a contactor is enabled to be unchanged. The manufacturing difficulty can be effectively reduced, automatic line assembling can be conveniently realized, and the guiding effect of the positioning boss of the coil bobbin can also be increased so that assembling speed can be enhanced.