104 results about "Pear shape" patented technology

The invention discloses a double-stator permanent-magnet vernier wind driven generator, and belongs to the field of motor manufacturing. The double-stator permanent-magnet vernier wind driven generator comprises an outer stator (4), an inner stator (8) and a rotor (6), wherein the outer stator is provided with a pear-shaped groove and first stator teeth; the inner stator (8) is provided with second stator teeth (9), and each second stator tooth (9) is provided with a flux modulation electrode (10) and a flux modulation electrode groove (11); the rotor (6) is of a cup-shaped structure, and a Halbach-structure permanent magnet (7) is arranged on the rotor; the tooth number of the first stator teeth of the outer stator (4) is equal to that of the teeth of the flux modulation electrode (10); moreover, the pear-shaped groove of the outer stator (4) and the flux modulation electrode (10) are oppositely distributed and arranged, and the first stator teeth of the outer stator (4) and the flux modulation electrode groove (11) are oppositely distributed and arranged. The double-stator permanent-magnet vernier wind driven generator disclosed by the invention is capable of generating a high-sine air-gap magnetic field, and has the characteristic of a high output torque.

The present invention relates to a fall protection device used in the process of climbing steel tower of power transmission line. Said full protection device includes the following several portions: large hanger, small hanger, endless rope, delta wire-lock fastener, pear-shaped fastener, small tackle and safety hook. Said invention also provides a fall protection method by using said fall protection device and its concrete operation steps.

The invention discloses a mine goaf tailing-filled concrete enclosing wall. The wall body (2) of the mine goaf concrete enclosing wall is a horizontally placed rock-socketed pear-shaped concrete structure. The large end of the wall body (2) faces to a mine goaf (10). The convex drum-shaped upper part of the large end of the wall body (2) runs through a small rock mass well (1). An upper drain pipe (4) and a lower drain pipe (4) are arranged in the wall body (2) and are respectively used as an upper part drain pipe and a lower part drain pipe. The inlet of the upper part drain pipe and the inlet of the lower part drain pipe are respectively provided with a perforated pipe (7). The outlet of the upper part drain pipe and the outlet of the lower part drain pipe are respectively provided with a gate valve (5). A layer of stainless steel wire mesh covers the external surface of the perforated pipe (7) at the inlet of the lower part drain pipe. A sandstone inverted filter body (6) with certain thickness is spread outside the stainless steel wire mesh. A layer of geotextiles covers the surface of the sandstone inverted filter body (6). The invention has the advantages that the wall can bear the pressure of water head above 300m, the water and sand leakage can be prevented, the tailing settlement water can be drained, the tailing pore water can be also drained, and the consolidation degree and the stability of the tailing-filled body in the mine goaf can be improved.

The invention belongs to the field of oil and gas resource development, and particularly relates to an inverted-pear-shaped underground salt cavern gas storage field and an establishing method thereof, wherein the salt carven gas storage field comprises a well completion tubular column, an injection-production tubular column, a central tubular column, cement rings and a salt cavern; the well completion tubular column extends from the ground surface into the salt cavern and is connected with the top of the salt cavern; the injection-production tubular column is positioned in the well completion tubular column and connected with the bottom of the well completion tubular column through a packer; and the central tubular column is positioned in the injection-production tubular column and hung on well head equipment. The salt cavern is shaped as an inverted pear, with the top part taking a round plane, the middle part taking a combined surface of a paraboloid and a spherical surface, and the bottom part taking a round plane. The establishing method of the salt cavern comprises steps as follows: determining the height, determining the lower structure size, determining the bottom round plane size, determining the upper structure size, determining the top round plane size, determining the thickness of the salt rock layers at the top and the bottom, selecting the tubular columns, and controlling the cavity shape. The salt cavern gas storage field has simple design process and clear mechanic mechanism, does not increase the difficulty and time for forming the cavity, and does not remarkably increase the cost.

A jewelry stone cluster comprising four gemstone sections which are mounted in a setting and which are juxtaposed to each other. Each gemstone section includes a table facet and, in one form, a respective pair of adjacent cross facets, with the cross facets extending in planes that are at an angle to their respective table facet. Together, the four pairs of juxtaposed cross facets define an inscribed cross symbol. Preferably, the upper gemstone quadrant sections are smaller sized, so that the arms of the cross are located vertically higher. The overall shape of the gemstone cluster can be round, four sided, oval, marquis, pear, polygonal or any shape.

A portable, handheld device for manual percussive respiratory therapy in infants and young children having a pear-shaped dome for proper position of the device over various sizes of target treatment anatomy, an ergonomic handle for maximum efficacy in implementation by a range of users, a cushioned sealing mechanism for softening the impact on a young patient, and indicator means to indicate proper positioning and engagement of the device during use. The device is optimal for use by parents and other caregivers with little or no medical training.

The invention discloses a method for online measurement of concentration of OH free radicals in a flame zone of Class B fire and a flame device. The method adopts the technology of laser-induced fluorescence to make a laser beam with the absorption wavelength of 308nm tuned to OH irradiate OH free radicals in a flame zone, so as to generate resonant transition from a low electronic state to a high electronic state. The excited molecules then self-radiate fluorescent. Under the condition that laser intensity and instrument conditions are maintained unchanged, the total fluorescence intensity is proportional to the concentration of the OH free radicals, thereby obtaining the concentration of the OH free radicals. The device of the invention comprises a pear-shaped funnel (1), a square combustion device (3), an oil cup (5), a mist rising control tube (6), a bracket (7) and a humidifier (8). The invention has the advantages of high measurement accuracy, simple structure and easy implementation.

The invention discloses a method for measuring residual quantity of diethylstilbestrol in aquatic products by utilizing a liquid chromatogram fluorescent method, comprising the following steps: (1) weighing 100g of ground aquatic product samples in a 50mL plastic centrifuge tube, adding 20mL of acetic ether, homogenizing for 230s, centrifuging for 10min with the speed of 7000r/min, moving the acetic ether layer to a 100mL pear-shaped flask, utilizing 2mL of normal hexane and acetic ether with a volume ratio of 85:15 to dissolve residue, and then stirring for 6min; (2) activating an SLH column by utilizing 5mL of normal hexane and 5mL of acetic ether, adding extracting solution on the SLH column, utilizing 10mL of normal hexane and acetic ether with the volume ratio of 82:20 to elute by controlling the flow rate at 2mL/min, collecting eluent, carrying water bath at the temperature of 450 DEG C, and then carrying out nitrogen drying till the original state; and (3) adding 1mL of sulfuric acid to the centrifuge tube of nitrogen drying, then adding 8mL of water in the centrifuge tube, utilizing 1mL of mobile phase for metering volume so as to be measured by an efficient liquid phase chromatogram. The method for measuring residual quantity of diethylstilbestrol in aquatic products has advantages of low cost, simple method, and low measuring limit, is suitable for popularization and use in the production and practice and is a technology demanded by the market, and has positive social meaning and social demand.

The invention discloses a small-wheel diameter solid tyre integrated electric machine driven by a disc type coreless DC motor. The small-wheel diameter solid tyre integrated electric machine comprises a central shaft, wherein a first bearing, a stator disc and a second bearing sequentially sleeve the central shaft, a first rotor disc and a second rotor disc separately sleeve the first bearing and the second bearing and are connected by a hub, a solid tyre is arranged on the hub, permanent magnets are arranged at inner sides of the first rotor disc and the second rotor disc, a plurality of pear-shaped holes are formed in the stator disc, are arranged an annular way and are used for installing a coil, the coil is fixed in the pear-shaped holes by a limiting device, the small-wheel diameter solid tyre integrated electric machine also comprises three Hall sensors, an annular circuit board and a cable harness, and the harness is used for power and signal transmission. The small-wheel diameter solid tyre integrated electric machine has the advantages of simplicity in structure, running reliability, small size, light weight, high efficiency, good speed regulation performance and the like; and moreover, with the adoption a coreless structure, the no-load current is small, and no hysteresis resistance is generated.

The invention discloses a pear-shaped expanded-base full-flow penetration test probe used for a marine ultra-soft soil in-situ test. The pear-shaped expanded-base full-flow penetration test probe comprises a probe rod and an expanded base probe end as well as a test system arranged between the probe rod and the probe end; the test system comprises a friction resistance pressure sensor, an end resistance pressure sensor and a hole water pressure sensor for inducting side friction resistance, end resistance and hole water pressure; the test system is further equipped with a hole pressure filterring which can seep water, and acts on the hole water pressure sensor; and the test system is equipped with communication equipment capable of transmitting an induction signal. The probe fills up theblank of a static penetration test and exploration probe before expanded bore pile construction, and can continuously and precisely test relevant parameters of a soil layer and timely outputs changingvoltage resistances along with depth of a penetrated soil layer, so that practical and reliable reference is provided for expanded bore pile engineering construction, and therefore, true and reliableanalysis is made on physical and mechanical property indexes of a seabed soil body.

The present invention discloses a movable pear-shaped drum type shaftless spiral guide blade stirring type aerobic composting reactor, which comprises a rack, wherein the rack is provided with a towing vessel. The towing vessel is provided with a drum. Infiltration liquid collecting grooves and observation sampling ports are uniformly distributed on the circumference of the drum. One end of the drum is provided with a material inlet/outlet. Both ends of a center line of the drum are provided with a gas inlet pipe and a gas outlet pipe, wherein the gas inlet pipe and the gas outlet pipe are communicated with the drum through double-layer sieve meshes. Blades are uniformly distributed on the inner wall of the drum. Thermometers are installed on different regions of the inner wall of the drum. The circumference of the drum is further provided with a large gear, wherein the larger gear is engaged with a small gear outside the drum, and the small gear is connected with a power device. The reactor of the present invention has characteristics of significant improvement of stool treatment rate, improvement of organic fertilizer use, reduction of occupation area, reductions of stool treatment facility investment and operating cost, and the like. With the reactor of the present invention, environmental and health risks can be effectively reduced and controlled.

The invention discloses a three-phase AC asynchronous motor for YDAX series of electric automobiles, which is provided with a machine shell, a stator and a rotor, wherein the slenderness ratio of the motor is 1.3-6.0, heat radiating fins on the machine shell are vertically and uniformly distributed on the circumference of an engine base, and a wire exit is arranged at the rear end of the engine base; the rotor has two shafts; a magnetic permeability material adopts a low-loss cold rolled silicon steel plate which has reasonable electromagnetic load design so that the efficiency is 1-5 percenthigher than that of a common high-efficient motor; an air gap between the stator and the rotor is increased by 0.3-0.4 times, slot combination adopts 36/28 or 36/33 or 54/44 or 72/64, the slot shape of the rotor adopts a pear-shaped round bottom or pear-shaped flat bottom or convex symmetrical or asymmetrical slot shape, and three-phase windings of the motor adopt a Y-shaped connection method with a maximum parallel branch; a class insulation IBGT (Insulated Gate Bipolar Transistor) insulation system is adopted, and a stator core winding is manufactured by hopper round wires special for a QP-2/200 variable frequency motor. Compared with the prior art, the motor has safe and reliable running, small vibration, low noise, large temperature rise margin and equal output torque with that of a petrol engine, and completely meets the requirements of the electric automobiles.

The invention discloses an omnidirectional LED bulb lamp, comprising a bulb shell, an LED bead, an aluminum substrate, an aluminum pressing cover, a lamp body, a driving PCB board and a lamp holder; the bulb shell is made from high-diffusion resin and fixedly connected with the lamp body by means of a buckle structure; the LED lamp bead is fixed with the aluminum substrate by soldering tin and has an beam angle of greater than 150 degrees with the bulb shell; the PCB board is fixed in the lamp body by a clamping slot; the lamp holder is fixedly connected with the lamp body by means of a toothed knobbing structure; the bulb shell is of a pear shape or a mushroom shape; the lamp body is of a plastic aluminum-wrapped structure; the transmittance of the material of the bulb shell is less than 70%; the external layer of the plastic aluminum-wrapped structure is made of thermal conductive plastics and the internal layer is made of aluminum; the thermal conductivity coefficient of the thermal conductive plastics is more than 1W/m.K. The omnidirectional light distribution is realized by the combination of the big beam angle formed by the LED lamp bead and the bulb shell as well as the high-diffusion resin bulb shell; and meanwhile, the problem of high heating value in the LED bulb lamp is solved by using the lamp body with the plastic aluminum-wrapped structure.

The invention relates to a high-power efficient motor used for an electric vehicle. The high-power efficient motor comprises a stator and a rotor, wherein the stator comprises a plurality of silicon steel sheets formed in a stamping and stacking mode, large pear-shaped stator tooth grooves are arranged in the silicon steel sheets, and stator windings are arranged in the large pear-shaped stator tooth grooves; the rotor is arranged on the outside of the stator and comprises a rotor rim and a plurality of concentric tile-shaped magnetic steel sheets attached to the inner side of the rotor rim in an adhesive mode, and air gaps are formed between the magnetic steel sheets and the silicon steel sheets. The motor has the advantages of high performance, a high material utilization rate and low magnetic energy loss; on the basis that the rotor guarantees that the performance of the motor meets work requirements, the quantity of magnetic steel sheet rare earth materials which are used is generally lower than that of a motor of the same specification; the groove model of the steel sheets is suitable for various pole-slot ratios and line insertion schemes, and the rotation speed and the power span are large.

The present invention discloses a dog walking collar, and relates to the field of pet products. The dog walking collar comprises a collar body, a lock catch and a connection buckle, wherein the collar main body is made of leather and is provided with a plurality of adjusting holes at a connection part with the lock catch, the lock catch uses a pin buckle for locking the collar body, the connection buckle adopts a triangular steel hanging buckle for connection of the collar and a pulling strap, the collar body is also internally provided with a rib and a bearing pad, the rib is in an arc-shaped flat metal structure with the middle part being raised outwards and is sealed by the leather and wrapped at the lower part of the collar body, the bearing pad is a protective pad made of a soft material and is wrapped by the leather at two sides of the raised position at the bottom part of the inner side of the collar body, the cross section of the collar body is oval-shaped, and the collar is pear-shaped at whole when being locked by the lock catch. According to the dog walking collar, outline features of a neck part of a dog and stress conditions of the neck part of the god under the action of the pulling strap during dog walking are given full consideration, the collar can restrain activities of the dog and also avoid injuries to the throat of the dog, thereby reducing wearing discomfort, without injuring hair and skin even after long-time wearing.

The invention discloses a branch stretching method in the young pear shaping process. The method includes the following steps of 1, base angle opening; 2, waist angle opening; 3, branch angle opening,wherein in the end of June and beginning of July, before branches stop to grow, branches at pear bases with the length of 50 cm to 60 cm are selected and subjected to branch angle opening, and the selected branches are softened; 4, branch positioning, branch pressing or rotating, branch balance points of tensile force are found on the branches through the angle and the orientation of pressing orrotating the branches according to the even distribution requirements of branch space; 5, ground peg digging, wherein the inserting positions of ground pegs are connected with the branch balance points of the tensile force and the ground pegs according to the angle and the orientation of branch positioning in the step 4 through gunny bag lines or cloth strips, wherein the gunny bag lines or the cloth strips are connected with the branch balance points of the tensile force in a slipknot mode, and the gunny bag lines or the cloth strips are connected with the ground pegs in a hard-knot mode. Thebranch stretching method in the young pear shaping process is easy to apply and convenient to operate.

The invention relates to the field of motor manufacturing, and discloses a random winding of a high voltage motor. A high voltage design with requirements on small motor volume and high power is realized. A stator slot is pear-shaped. A rotor adopts a single-squirrel cage slot. Rotor conducting bars adopt single-squirrel cage rectangular and convex drawn copper conducting bars. A stator random winding insulating process for the motors of 20kW and the stator random winding insulating process for the motors of 20kW and above are adopted. The random winding of the high voltage motor has the advantages of: 1, relatively more remarkably reducing the volume of the motor and achieving good effects by improving an insulating structure of the high voltage motor with the small volume and relativelyhigher power; 2, making the electromagnetic scheme design and structure of the motor more rational and simpler and functioning in optimizing the design; and 3, reducing a plurality of steps of molding the winding and saving raw materials. Therefore, the random winding of the high voltage motor has relatively higher economy.