3097results about How to "Improve support strength" patented technology

The invention discloses a support method of a weak expansion type surrounding rock laneway, comrprising the following steps: A. the laneway is excavated according to the sectional form, an arc pit is excavated on a bottom board of the laneway, and full face injection of a thick concrete leveling course is carried out; B. high-strength prestressed anchor and prestressed anchor cable are used for supporting the surrounding rock, an anchor rod and an anchor cable are constructed, a high-strength prestressed anchor rod uses a laevo rod body without longitudinal bar and is arranged in plum blossom shape; C. a foam cushion is laid, and the full face of the laneway is tightly stuck and paved with an initial ejection leveling course, and a gap is added and preserved in case of laneway deformation; D. a first layer of reinforcement mat is hung and tightly stuck to the foam cushion, a full face sealed type steel bar grid arching is constructed, the main bar inside the grid is bonded with the first layer of reinforcement mat, and the second layer of reinforcement mat is hung on the sealed type steel bar grid arching; E. the bottom board is constructed, a cast-in-place concrete gutter is constructed at the center part of a positive arching, and rubbles are paved at the both sides of the gutter. The method solves the problems of low intensity of surrounding rock laneway, water expansion and floor heave, thereby avoiding reclamation work of the laneway and having low cost.

Provided are a radial core type brushless direct-current (BLDC) motor and a method of making the same, having an excellent assembly capability of division type stator cores in a double rotor structure BLDC motor. The BLDC motor includes a rotational shaft, an integrated double rotor including an inner rotor and an outer rotor, and a rotor supporter wherein a trench type space is formed between the inner rotor and the outer rotor, and an end extended from the inner rotor is connected with the outer circumferential surface of a bushing combined with the rotational shaft, and an integrated stator wherein one end of the stator is disposed in the trench type space and an extension axially extended from the other end of the integrated stator is fixed to the housing of the apparatus. In the integrated stator, U, V, W phase coil assemblies are formed of a number of core groups including a number of division type cores, wherein for each phase coil assembly, the division type core groups of the U, V, W phase coil assemblies are alternately disposed in an annular form in sequence of the phases, and the respective division type core groups are integrally formed into a single body in annular form by a stator support.

A supporting structure of a sub-frame for a suspension system contains a body frame, a sub-frame, elastic bushings, each having an inner cylinder having a lower edge. And an outer cylinder and an elastic member are interposed between the inner and outer cylinders. The sub-frame is supported on the body frame via the elastic bushings, at least one of first stay extends along the body frame, and at least one second stay extends along the body frame in a different direction from the first stay. Both ends of each of the fist and second stays respectively are supported on the lower edge of the inner cylinder and the body frame.

The invention relates to a sound-insulating, ventilating and heat transfer enhancing acoustic metamaterial structural unit, which comprises a frame, wherein a restraining body is arranged inside the frame, and at least one of the upper and lower surfaces of the frame is coated with a thin film; and at least one hole is formed in the restraining body and the thin film. In addition, the invention provides an acoustic metamaterial composite plate and an acoustic metamaterial composite structure comprising the acoustic metamaterial structural unit, as well as a frequency modulation method and an assembly method. The acoustic metamaterial structural unit has sound insulation capability superior to that of an ordinary perforated plate or micro-perforated plate within a broadband, can ensure that sufficient heat flow, air flow or liquid flow can pass through smoothly, and increases heat diffusion rate of fluid media on both sides of holes and accelerates heat convection efficiency through unit localized vibration generated by the structure under excitation of acoustic waves. The acoustic metamaterial structural unit and the array composite structure have the advantages of simple assembly technology and stable working performance.

The invention relates to a medical implant part for femoral head joint surface depression or I-stage or II-stage femoral head necrosis, namely a porous tantalum rod. One end of the implant part is provided with a connection fastening structure connected with a bone tissue, and a through hole is formed in the center of the tantalum rod; the porous tantalum rod is made of a porous tantalum material with a foam structure of pore three-dimensional communicated distribution, and is sintered by adopting a foam impregnation method; and tantalum powder particles have a sinter neck structure on a foam frame formed by accumulating the sintered pure tantalum powder. The through hole in the porous tantalum rod facilitates accurate positioning in an operation; and a related object can be picked out and injected conveniently through the through hole, so that the effect of constant pressure reduction can be achieved.

A V-belt type continuously variable transmission according to the present invention includes a drive pulley assembly provided in a drive shaft, a driven pulley assembly provided in a driven shaft, a V-belt looped over both the pulley assemblies, and a transmission case assembly housing both the pulley assemblies and the V-belt. One end of the drive shaft in the shaft direction is coupled to an output side rotation member of a centrifugal clutch, and the other end of the drive shaft is rotatably supported on a boss portion formed in the transmission case assembly.

The invention relates to an ammunition overload detection device, and in particular relates to an overload test and detection device of a gas gun, wherein the device provided by the invention can be used for solving the technical problems such as inconvenience in operation and use and the like of the existing air gun penetration test device. The overload test and detection device of the gas gun comprises a frame body which is provided with an overload test air gun launching device, a charging overload test bomb, an overload test protective box and an overload test target plate replacement device. Comprehensively, compared with the prior art, in the technical scheme provided by the invention, the target plate replacement device for an overload test, the overload test protective box and a small-size penetration test bomb are designed specially for the small-size charging and priming system air gun overload performance test, principles and methods relevant to the mechanical design are utilized, the design scheme has the characteristics of being vigorous, practicable, convenient and the like, and the overload test and detection device has the advantages of favorable practical value, reliable operability and accurate experiment result.

A conveyor-belt roller assembly secured inside a conveyor-belt roller and onto an inner shaft, preferably used in conveyor-belts used for carrying high loads of material in hazardous environments. The conveyor-belt roller assembly has a stationary anti-lock shield which protects the rotating exterior surface from coming into contact with the outside elements for example debris and machinery. A dust shield is also position aft of the anti-lock shield to prevent the penetration of small particles and dust into the inner workings of the conveyor-belt roller assembly. The conveyor-belt roller assembly also has deep rings in the load-bearing portion for thermal expansion and contraction as well as heat dissipation. Bridging ribs are positioned across the deep rings to greatly increase the strength and therefore load-baring capacity of the conveyor-belt roller assembly. A tapered labyrinth seal is used so that it can be press locked into position making installation quicker and easier. The main load-baring component and tapered labyrinth seal component are preferably fabricated from a high strength, heat resistant 30% glass filled polypropylene.

A refrigerator having: an ice storage container in a freezer formed with an opening at a side thereof; an ice breaking part for receiving ice cubes stored in the ice storage container and making shaved ice; a rotating blade which is rotatably provided in the opening; a first discharging part for discharging the ice cubes released to the opening and crushed ice broken by the rotating blade; a second discharging part that communicates with the ice breaking part to cause the ice cubes to be released from the opening and transferred by the rotating blade into the ice breaking part; and first and second discharging levers for opening and closing the first discharging part and the second discharging part, respectively. Thus, the invention provides a refrigerator for selectively distributing and supplying ice stored within an ice storage part to a single transferring unit.

The disclosure discloses a fault locating method based on a multi-layer evaluation model. Firstly, determine a fault type to be inspected and a fault symptom which able to accurately and effectively reflect a power transformer operation status and determine a weight of each fault type by using an association rule and a set pair analysis. Then, establish a DBN model to perform feature extraction and classification on multi-dimensional data of a fault. Finally, perform a comprehensive evaluation on an existing diagnosis result by using the D-S evidence theory. Accordingly, the supporting strength of the common target is reinforced, while the influence of divergent targets is reduced. As a result, the uncertainty in the diagnosis result is significantly reduced. The disclosure is mainly used to monitor and diagnose a status variable of the power transformer in a real-time manner, and treats power transformer status evaluation as a multi-property decision issue.

The invention provides a display device and electronic equipment. The display device comprises a first shell, a second shell, a flexible screen, a supporting belt and a telescopic rod. The first shelland the second shell are oppositely arranged, an opening is formed in the position, opposite to the second shell, of the first shell, one end of the flexible screen is rolled in the first shell, andthe other end of the flexible screen extends out of the opening and is fixed to the second shell, one end of the supporting belt is rolled in the first shell, the other end of the supporting belt extends out of the opening and is fixed to the second shell, and the part, extending out of the first shell, of the supporting belt is attached to the bottom of the flexible screen, the telescopic rod isarranged at the bottom of the supporting belt, one end of the telescopic rod is fixed to the first shell, and the other end of the telescopic rod is fixed to the second shell. In the embodiment of theinvention, the supporting rod and the supporting belt can be used for supporting the flexible screen, local deformation of the flexible screen is avoided, and touch operation on the flexible screen is facilitated.

The invention discloses a folding tent eave frame mechanism. The folding tent eave frame mechanism comprises a tent frame and eave rods, wherein the tent frame comprises upright columns, tent rods and inclined struts, wherein a fixing seat is fixedly arranged on the tops of the upright columns; a sliding seat capable of vertically sliding along the upright columns is connected to the upright columns in a sliding manner; first ends of the tent rods are pivoted to the fixed seat; first ends of the inclined struts are pivoted to the sliding seat; second ends of the inclined struts are pivoted to the tent rods; the sliding seat vertically slides along the upright columns so as to drive the tent frame to be unfolded or folded; the tent frame is provided with slide ways; first ends of the eave rods are pivoted to the inclined struts; the eave rods can move relative to the slide ways, and second ends of the eave rods can be far away from the slide ways or approach the slide ways, so that the eave rods are unfolded or folded; and when the tent frame is unfolded or folded, the eave rods can be driven to be unfolded or folded. The folding tent eave frame mechanism has the following advantages that on the one hand, when the tent frame is unfolded or folded, the eave rods can be driven to be unfolded or folded, and one-step unfolding or folding is realized, and the folding tent eave frame mechanism is unfolded or folded conveniently and quickly; and on the other hand, the supporting strength of a top structure of the tent frame can be improved.

The invention provides a coal mining method of fully-mechanized caving mining with large mining height in a super-high seam, a coal caving process, reasonable type of a support, production capacity of equipment, comprehensive control measures of coal wall spalling of working face, a technical route for improving the recovery rate of the fully-mechanized caving face with the large mining height, and feasibility evaluation indexes (thickness of the seam, top coal cavability, coal wall stability and roof pressure strength) of the fully-mechanized caving mining with the large mining height, and further forms a whole set of fully-mechanized caving mining process technology with the large mining height. The coal mining method is that the coal cutting height is 4.2-4.8m; the length of the working face is 200-280m; and the web of a coal mining machine is 0.8-1m. The process technology can increase the coal cutting quantity by 43%, shorten the coal caving time by 9%, relatively reduce the coal caving quantity by 9%, improve the resource recovery rate by 5% and reduce the mining-caving ratio to below 1:3 by increasing the coal cutting height, and can further realize the relatively balanced production of mining and caving of the working face.

Disclosed is a water-proof and dust-proof membrane assembly and applications thereof. The water-proof and dust-proof membrane assembly comprises a body and a supporting member. The body is of membrane and has a first surface, a second surface, and an asymmetric porous structure formed between the first surface and the second surface of the body. The asymmetric porous structure has a thickness ranging between 1 μm and 1000 μm, a first volumetric porosity ranging between 5% and 99%. The asymmetric porous structure has plural pores, and each pore has a pore diameter between 0.01 μm and 15 μm. The supporting member is of a polymeric material and has a first contacting surface, a second contacting surface, and a second volumetric porosity which is greater than the first volumetric porosity. The first contacting surface of the supporting member is adhered to the first surface of the body.

The invention discloses a 3D NAND storage device and a formation method thereof. In the formation method of the 3D NAND storage device, a selective grid sacrificial layer in a first grid partition groove area is disconnected through a first grid partition groove and a plurality of grid partition groove partition areas in the first grid partition groove area, a selective grid sacrificial layer in athrough hole area is disconnected through a selective grid partition area in the through hole area, although the selective grid sacrificial layer on the top of the first grid partition groove area isdisconnected through the first grid partition groove and the grid partition groove partition areas, the sacrificial layer at the bottom of the grid partition groove partition area still remains, namely the sacrificial layers and partition layers in each storage block when the first grid partition groove is formed are still connected together, a stacking structure can be of extremely high supporting strength when the first grid partition groove is formed, and the side wall of the first grid partition groove is unlikely to deform or incline, so that the stability of the feature size of the formed first grid partition groove is guaranteed.

There are provided an automotive interior component, in which a decreased weight and a reduced cost are achieved and safety measures at the time of side collision is taken, and a method for manufacturing the automotive interior component. A door trim main body of a door trim is made up of a foamed resin base material having a light weight and shape holding properties and a resin mold portion integrated with a part of the inside surface side of the foamed resin base material. A resin flash is leaked intentionally and forcedly around a part of the resin mold portion to form a reinforcing flash portion. Thereby, the resin mold portion is supported firmly, and a sharp edge of the resin mold portion is avoided by the reinforcing flash portion at the time of side collision. Also, the molding accuracy is increased by producing the reinforcing flash portion intentionally and forcedly.

A guide rail 13 is formed of a ceramic material having a specific strength of 2x10<7 >mm or more and has a planar part with a surface roughness of 0.5 mumRa or less. Further, the guide rail 13 has a recess 18 for avoiding interference with a part to be attached in which the corner 18a of the recess 18 is formed with a radius of curvature of 0.1 mm or more.

Since a supporting wafer contains boron of 9×10¹⁸ atoms/cm³ or more, therefore a part of the metal impurities in an active layer wafer and the metal impurities in the wafer can be captured by the boron during the heat treatment for bonding. As a result, metal contamination in the active layer can be reduced. Moreover, the wafer strength is enhanced, thus preventing the wafer slipping. Since the wafer has no COP, micro voids are not detected in the LPD evaluation of the active layer, thereby improving the reliability of the evaluation. Such a bonded wafer can be manufactured at a low cast.