21363results about How to "So as not to damage" patented technology

The invention discloses a bridge plug with a large drift diameter. The bridge plug comprises an upper joint, a central tube, a guiding shoe head and a bridge plug assembly; the upper joint is an annular part and is fixedly connected with the outer side of one end of the central tube in a sleeving mode; the central tube is a metal central tube, a soluble ball base is arranged at the end, close to the upper joint, of the central tube, and the central tube is a drillable metal part; the guiding shoe head is an annular part, is fixedly connected with the outer side of the other end of the central tube in a sleeving mode and is provided with a device used for being fixedly connected with a pull rod which is arranged in the bridge plug in a sleeved mode; the middle section of the central tube is sleeved with the bridge plug assembly which is located between the upper joint and the guiding shoe head. The invention further discloses a setting method of the bridge plug with the large drift diameter. The drilling polishing procedure of the bridge plug with the large drift diameter can be omitted, the problems of a long construction period, high operation cost and high construction risk brought by drilling polishing are solved, and the bridge plug is easier and more convenient to use and faster to construct.

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.

A surface-emission laser diode includes a distributed Bragg reflector tuned to wavelength of 1.1 μm or longer, wherein the distributed Bragg reflector includes an alternate repetition of a low-refractive index layer and a high-refractive index layer, with a heterospike buffer layer having an intermediate refractive index interposed therebetween with a thickness in the range of 5-50 nm.

The invention provides a speed changing magnetic pump, which comprises a pump body, a speed changing magnetic transmission device installed in a casing cavity and a driving motor. The speed changing magnetic transmission device comprises an inner magnetic rotor, an outer magnetic rotor, an isolation sleeve and a magnetic field adjusting ring. The inner magnetic rotor comprises an inner magnetic rotor magnet ring and an inner magnetic rotor magnet core, the outer magnetic rotor comprises an outer magnetic rotor magnet core and an outer magnetic rotor magnet ring which forms an annular cavity with the inner magnetic rotor magnet ring, and the isolation sleeve fixedly connected with a pump body is arranged in the annular cavity. The magnetic field adjusting ring fixedly installed on the isolation sleeve is an annular body formed by connecting a plurality of magnet core blocks and a plurality of epoxy blocks at intervals and used for adjusting magnetic fields of the inner magnetic rotor and the outer magnetic rotor to enable the rotating speed of an output rotating shaft connected to an impeller in a pump body to be different from the rotating speed of an input rotating shaft connected to the driving motor.

The invention discloses an anti-collision fixed-point unmanned aerial vehicle for fire control, and belongs to the field of unmanned aerial vehicles. The anti-collision fixed-point unmanned aerial vehicle for fire control comprises an unmanned aerial vehicle body, a bomb-dropping gun and an anti-collision cover, wherein the bomb-dropping gun is arranged below the unmanned aerial vehicle body; a steering engine is mounted on the bomb-dropping gun and is used for controlling the bomb-dropping gun to launch a fire extinguishing bomb; a collimation mechanism is mounted on the parallelly arranged bomb-dropping gun, so that the bomb-dropping accuracy is improved; the anti-collision cover adopts a cage-shaped structure; the cage-shaped structure encircles the periphery of the unmanned aerial vehicle body to protect the unmanned aerial vehicle body from being collided; a waterproof cover is also arranged on a spiral paddle support to prevent the spraying of flames. According to the anti-collision fixed-point unmanned aerial vehicle, fixed-point fire extinguishment on high-rise buildings and narrow channels is carried out without geographical environment limitation, and the unmanned aerial vehicle is unlikely to collide and damage, high in flying speed, sensitive in actions and wide in application range.

A multiple-degree-of-freedom anti-explosion mechanical arm relates to an anti-explosion mechanical arm. The anti-explosion mechanical arm comprises a six-degree-of-freedom joint component, a double-camera system, a distributed control system and an expansion system, wherein a front paw can be operated flexibly and diversely through the cooperative control of six joints; the double-camera system is used to provide front vision for rear operating staff so that the mechanical arm can be conveniently controlled to complete special tasks, the double-camera system comprises a main camera fixed on a front arm and a front-end camera fixed on a paw joint; the main camera has broad vision, the focus of the front-end camera is fine; the distributed control system is used to control the synergy movement of the six-degree-of-freedom component and various movements of the six-degree-of-freedom component, the distributed control system comprises a distributed control module, a magnetic absolute position sensing system and the like; and the expansion system is used to add different functions to meet different demands and increase the application range of the mechanical arm.

The invention discloses an IC automatic detecting braiding method and an automatic pallet type detecting braiding machine, comprising a pallet-transport device, a braiding packing device, a waste materials collecting device. A PC control system and an electrical control system as well as a pallet-separate device are arranged on the front end of the pallet transport device and an empty pallet-collect device is arranged on the back end. The braiding lead direction of the braiding packing device is vertical to the pallet-transport direction of the pallet-transport device. A face side scan device and a back side device for detecting IC as well as a catch-and-put device for catching IC from the pallet are orderly arranged in the transportation range of the pallet-transport device. The catch-and-put device is electrically connected with the PC control system and the electrical control system and is a classification catch-and-put device which can classify the ICs according to the detecting results of the face side scan device and the back side device and then send the eligible ICs to the braiding packing device and the unqualified ICs to the waste materials collecting device. The braiding machine has the advantages of good accuracy and reliability for scanning and detecting, rapid speed for braiding and packing, low composite cost and high production efficiency.

The invention is suitable for the field of overvoltage protection, and provides an input overvoltage protection circuit and a direct current-direct current (DC-DC) power supply conversion device. The input overvoltage protection circuit comprises a voltage detection circuit, a drive and delay circuit, an output circuit and a switching circuit which are connected in turn, wherein the voltage detection circuit detects input voltage, compares the detected voltage with set reference voltage and outputs a corresponding voltage signal according to a comparison result; the output circuit outputs a switching control signal according to a drive and delay signal output by the drive and delay circuit and controls the switching on and off of the switching circuit; the output end of the switching circuit is connected with a load; and when overvoltage is input, the switching circuit is switched off, and the load is isolated from the input voltage. In the input overvoltage protection circuit, the voltage detection circuit detects the input voltage, and the load is isolated from and disconnected with the input voltage through the switching circuit when the input voltage is higher than the set reference voltage, so that the load is prevented from being damaged.

The present invention relates to a cigarette filter comprising natural herb plant material and a cigarette with it. According to the present invention, the filter is filled with the natural herb plant cut at a certain size. The herb plant is used as a form of a reconstituted tobacco sheet, a form of being cut after drying, and granule form. The cigarette filter according to the present invention can allow smokers to enjoy natural herb flavor, as well as an aromatherapy effect upon smoking and substantially reduce oral odor and cigarette odor emanated from a mouth of a smoker by neutralizing odor unique to the cigarette.

An optical information storage medium includes information on recording layers having the same reproduction channel characteristics or different reproduction channel characteristics. Nominal recording speed information is recorded in a read-only zone, and maximum and minimum recordable speed information is recorded in a recordable zone of an area other than a user data area. The nominal recording speed information is reproduced using a differential signal channel or a sum channel, and the maximum and the minimum recordable speed information is reproduced using the sum channel. The optical information storage medium addresses a situation where the nominal recording speed is not satisfied due to errors occurring during the manufacture of the storage medium. Thus, the defective disc proportion can be reduced, and loss of user data due to application of inaccurate recording layer information can be prevented.

The invention provides a treatment process for absorbed condensate waste gas, wherein two active carbon absorbing tanks alternately absorb waste gas; when one active carbon absorbing tank carries out waste gas absorption work, the other active carbon absorbing tank carries out carbon bed reproduction work, wherein the absorbed waste gas in waste gas absorption work is cooled; the carbon bed reproduction work comprises a step of vacuum de-sorption and a step of nitrogen de-sorption in sequence; the step of nitrogen de-sorption comprises flowing heated nitrogen at the temperature of 60-80 DEG Cthrough the carbon bed from top to bottom so that the carbon bed is deeply desorbed, and finally cooling the carbon bed by using unheated cold nitrogen so as to recover adsorptive capacity. The process is simple without providing absorbent on the spot; and the treatment process has high treatment efficiency, and can obtain pure recovery product without causing secondary pollution.

The invention relates to a material diversion mechanism, which is used in a material diversion system of a roller conveyer line and comprises a first conveying roller path (4), a second conveying roller path (1) and a path separation mechanism. An angle of 90 degrees is formed between the first conveying roller path (4) and the second conveying roller path (1). The path separation mechanism is arranged at the turning point of the first conveying roller path (4) and the second conveying roller path (1), is arranged under the first conveying roller path (4) and comprises a fixed seat body (11), a bearing seat body (13), a driving shaft (12), a driving sprocket (2), a driving belt pulley (3), a belt bearing body (14), a belt bearing wheel (5), connecting rods (8), a lifting cylinder (7), a tension adjusting cylinder (9) and a tension adjusting wheel (10), wherein the belt bearing body (14), the belt bearing wheel (5), the driving belt pulley (3) and a belt (6) form a belt conveyor unit, and the fixed seat body (11), the two groups of connecting rods (8) and the belt conveyor unit jointly form a parallelogram mechanism. The material diversion mechanism improves the material diversion efficiency and can protect materials against damages during diversion.

The invention relates to a ceramicized silicon rubber, which comprises 1)60-100 parts of silicon rubber, wherein a general formula is (RnSiO4-n/2)m, R is an organic group, n is the organic number (1,2,3) connected to silicon atoms, and m is polymerization degree (greater than and equal to 2); 2)20-100 parts of silicon dioxide; 3)1-20 parts of silicone oil, wherein the general formula is (RnSiO4-n/2)m, R is an organic group, n is the organic number (1,2,3) connected to silicon atoms, and m is polymerization degree (greater than and equal to 2); 4)0.1-10 parts of coupling agent and 5)20-120 parts of ceramicized powder. The above raw materials are mixed in a kneader and then vacuumized, the ceramicized powder and the coupling agent are added in the kneader and then uniformly mixed to form the bulk ceramicized rubber, and the ceramicized rubber is performed roll mixing and filtered to obtain the ceramicized silicon rubber. The ceramicized silicon rubber has the advantages that the processing is easy, the production cost is low, the ceramicized silicon rubber can be performed ablation to a ceramic shell, and can protect the burned objects from damaging.

The invention discloses a flame-retardant ceramic composite material which comprises the following components in parts by weight: 100 parts of polyolefin, 0-100 parts of silicone rubber, 1-100 parts of silica, 0-30 parts of silicone oil, 0.00001-10 parts of platinum complex or platinum compound calculated based on platinum, 0-10 parts of coupling agent, 0-100 parts of flame retardant, 1-250 parts of porcelain powder, 0-10 parts of antioxidant, and 0.01-10 parts of vulcanizing agent. The materials are mixed in a kneading machine, the materials are added into the kneading machine through vacuumizing and then uniformly mixed so as to obtain bulk ceramic rubber, and after being cooled, the cooled rubber is subjected to open milling by adding the vulcanizing agent so as to obtain the flame-retardant ceramic composite material. The flame-retardant ceramic composite material disclosed by the invention is easy to process and low in production cost, and can be ablated into a ceramic shell so as to protect a burnt object from being damaged. Because a platinum complex or a platinum compound is added in the flame-retardant ceramic composite material disclosed by the invention, the sintering temperature of the flame-retardant ceramic composite material can be reduced, the reaction speed of preparation can be increased, the production efficiency is improved, and the production cost is lowered.

The invention discloses a leveling method based on four-point support and an electromechanical automatic leveling system. In the leveling method, a symmetrical diagonal lifting and leveling strategy is adopted, and the leveling purpose is achieved mainly by regulating the levelness of the ligatures among supporting points on diagonal lines; and the leveling system comprises a central processor, a level sensor, a control keyboard, a display, four alternating-current servo drivers and four supporting legs; and each supporting leg comprises a motor, a speed reducer, a ball screw and a base. The invention is particularly suitable for large-medium-sized radar truck vehicle-mounted platforms, communication vehicles and various engineering vehicles for engineering machinery, the method has the advantages of high leveling efficiency, high leveling reliability and the like, and the leveling system has the advantages of high leveling precision, high intelligent degree, high speed, strong carrying capacity, good stability, high transmission efficiency, suitability for severe environments and the like.

A computer-based method includes collecting a sequence of measurements related to a controllable environmental parameter in a monitored space over time, deriving a master curve based on the sequence of collected measurements to characterize normal periodic variations in the controllable environmental parameter over time, collecting one or more subsequent measurements that represent the controllable environmental parameter of the monitored space, and evaluating a likelihood that the controllable environmental parameter will, at some future point in time, exceed an acceptable level by comparing a curve associated with one or more of the subsequent measurements to the master curve.

The invention discloses a detection device and a detection method for human motion information, belonging to the field of electronic information and mode identification. The detection device and the detection method of the human motion information are based on a single triaxial accelerometer and a Zigbee module; the detection method is based on a gait recognition technology and a statistical data modeling and can achieve detection of the human motion information by the triaxial accelerometer; the detection device comprises wireless sensing comprehensive modules arranged on a pair of shoes and an upper computer receiving module connected with a PC (Personal Computer) terminal; the device uses a trigger mode to perform wireless transmission for motion data in order to perform a human-computer interaction; due to a Zigbee low-power consumption design, a system can use batteries with smaller volume and capacity to reduce weight and volume of the whole system so as to be beneficial to be put at the bottom of the shoes; due to a voltage-stabilizing power supply design, an error of a quantized acceleration magnitude of an accelerometer after a working voltage drops can be avoided when the batteries are powered.

The invention discloses a circuit for realizing fast and slow charging in linear circuits and a charging control method. In the circuit, a fast charging channel and a slow charging channel are adopted to charge a battery; when the voltage of the battery is low, the slow charging channel is adopted for charging; and when the voltage of the battery is normal, a fast charging mode is adopted for charging. The circuit and the method can eliminate the potential safety hazard, prevent the damage of the battery, ensure the charging speed and simultaneously prevent overcharging.