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64results about How to "Elimination" patented technology

Gob-side entry retaining adjoining rock stabilizing method based on lateral rock formation pre-splitting control

ActiveCN103321642AStress Field Distribution OptimizationEliminationUnderground miningSurface miningDrill siteInduced stress
The invention provides a gob-side entry retaining adjoining rock stabilizing method based on lateral rock formation pre-splitting control. The stabilizing method is used for pre-splitting an upper roof above the gob-side entry retaining. The method comprises the steps as follows: constructing a drill site in a roadway stoping lateral coal wall; stoping a lateral top plate in the drill site; constructing two groups of six advanced pre-splitting blasting holes which take the shape of a small horizontal rotational angle in the trending direction of the roadway; loading the explosive for blasting in the position which is 10 to 40 meters to an advanced working surface. According the method provided by the invention, a top cover rock formation can be pre-split, the fracture of the top cover rock formation in an assigned position outside a wall body is guaranteed, and the contact of the turning submerged upper roof to the gob-side entry retaining adjoining rock is separated, so that the bearing pressure of the gob-side entry retaining adjoining rock is reduced, and the action time of the mining-induced stress is shortened; the method has the effects of simple operation, high efficiency of construction and fast speed.
Owner:CHINA UNIV OF MINING & TECH

Space mechanical arm suspension microgravity simulation method

The invention provides a space mechanical arm suspension microgravity simulation method, and belongs to the field of simulation experiments, wherein the method comprises the steps: S1, installing a space machine, and controlling a six-degree-of-freedom table to move to a test starting position on an air floatation platform; S2, adjusting the alignment position according to the target point of thesix-degree-of-freedom table; S3, controlling a mechanical swing arm to move, and connecting a suspension assembly with a suspension point; S4, controlling an omnidirectional mobile platform to move along with the six-degree-of-freedom platform; S5, controlling a space mechanical arm to be unfolded; S6, after the space mechanical arm completes the test, controlling the space mechanical arm to moveto an original folded state; S7, after the six-degree-of-freedom table moves to the parking position, closing an air source, and supporting and fixing the six-degree-of-freedom table; and S8, ending the test of disassembling a suspension assembly. The action of the gravity of the mechanical arm on the posture of a spacecraft when the mechanical arm is unfolded is eliminated, meanwhile, more motionfreedom degrees and motion ranges of the mechanical arm are reserved, and the unfolding range of the space mechanical arm is adapted to in a large range.
Owner:TIANJIN AEROSPACE ELECTROMECHANICAL EQUIP RES INST

Tool provided with diamond/silicon carbide composite coating and preparation method thereof

The invention provides a tool provided with a diamond/silicon carbide composite coating. The tool provided with the diamond/silicon carbide composite coating comprises a base body, and a multi-layer coating structure, wherein the multi-layer coating structure is arranged on the base body. The multi-layer coating structure comprises the silicon carbide/diamond composite coating and a diamond coating. The silicon carbide/diamond composite coating and the diamond coating are sequentially and alternately arranged upwards from the surface of the base body to form the multi-layer coating structure; and the diamond coating is arranged on the top layer of the multi-layer coating structure. Each layer of the multi-layer coating structure can achieve continuous growth of the diamond phase, and accordingly the interface bonding strength between the layers is strengthened, the internal stress of the coatings can be reduced effectively, the adhesion between a thin film and the base body can be strengthened, and particularly the multi-layer coating structure is beneficial for resisting the strong shear stress generated in the cutting process of the tool. In addition, the overall fracture toughness in the thickness direction of the coatings can be strengthened. The invention also provides a production method of the tool provided with the diamond coating.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI

Space mechanical arm suspension microgravity simulation device

The invention provides a space mechanical arm suspension microgravity simulation device, which belongs to the field of simulation experiments, and comprises a mechanical swing arm mounting platform, asix-degree-of-freedom table and a camera, a target point on the six-degree-of-freedom table is measured in real time to obtain the position and attitude change of the six-degree-of-freedom table, andthe mechanical swing arm mounting platform is controlled to move along with the six-degree-of-of-freedom table; the mechanical swing arm mounting platform comprises an omni-directional moving platform, a balance weight and a mechanical swing arm bracket; the omni-directional moving platform moves omni-directionally in a plane; a counterweight, which is used for balancing the whole centroid of theomni-directional mobile platform, and a mechanical swing arm, the motion of the mechanical swing arm bracket is used for compensating the motion precision of the full-moving platform. The action of the gravity of the mechanical arm on the posture of the spacecraft when the mechanical arm is unfolded is eliminated, meanwhile, more motion freedom degrees and motion ranges of the mechanical arm arereserved, and the unfolding range of the space mechanical arm is adapted to in a large range.
Owner:TIANJIN AEROSPACE ELECTROMECHANICAL EQUIP RES INST

Traditional Chinese medicine composition and preparation thereof for health care and beautification

InactiveCN101574408AVisibly moisturisedVisible anti-aging effectDigestive systemDermatological disorderCystToxic material
The invention provides a traditional Chinese medicine composition for health care and beautification, taking rhubarb and angelica as main components combined with Dangshen and Radix Hedysari to jointly perform the efficacy of promoting blood circulation by removing blood stasis, clearing away heat and toxic material, regulating the menstrual function, curing skin, beautifying and health care. Clinical and experimental data proves that the traditional Chinese medicine composition of the invention has favorable nursing and health care function for female irregular menstruation, hysteromyoma, cyst of uterus and dysmenorrhea, has specific nuring and health care function for the problems of female ovary and ovarian appendage, has favorable softening and eliminating function for female hyperplasia of mammary glands and lactocele, has favorable nursing function for various problems caused by constipation stagnation and has specific mitigation and treatment function for skin hutchinson-Gilford Syndrome, chloasma, recurrent chronic dermatitis of face, skin sicca syndrome, etc. Thus, the traditional Chinese medicine composition can be prepared into various preparations taken orally and external applied by conventional technology of traditional Chinese medicine pharmacy, and can be prepared into various skin care products according to the conventional technology used for producing skin care and beautifying products.
Owner:甘肃青黛中草药美容研究有限责任公司

U-shaped wall base and bottom plate dynamic and static separation bearing type lining structure with water delivering function

PendingCN107975378AOvercoming the difficulty of controlling the excavation curvatureEasy to excavateUnderground chambersDrainageKarstEngineering
The invention discloses a U-shaped wall base and bottom plate dynamic and static separation bearing type lining structure with a water delivering function in order to eliminate the effect of groundwater on a bottom structure of a tunnel lining, the problems of floating deformation of a tunnel inverted arch and cracking damage of the tunnel bottom structure in a karst or groundwater development area are effectively solved, and the stability and safety of tunnel construction and operation are guaranteed. Deep grooves are excavated in the two transverse sides of the bottom of a tunnel to form inverted-T-shaped tunnel bottom excavation faces; U-shaped wall base construction bodies with groove-shaped cavities are arranged in the deep grooves; the U-shaped wall base construction bodies are fixedly connected with the wall bottoms of the two side edges of arch wall secondary lining structures; and the U-shaped wall base construction bodies serve as bearing structures of the arch wall secondarylining structures and longitudinal drainage channels of the tunnel. Bottom plates are arranged in the positions, above the middles of the inverted-T-shaped tunnel bottom excavation faces, between theU-shaped wall base construction bodies on the two sides, and road beds are fixedly arranged on the bottom plates; settlement seams are arranged in the connecting positions of the two transverse endsof the bottom plates and the U-shaped wall base construction bodies on the two sides, so that a surrounding rock load transmitted by the arch wall secondary lining structures is separated from a trainload transmitted by the road beds.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD

High efficiency and energy conservation three-clutch bidirectional output gearbox

The invention discloses a high efficiency and energy conservation three-clutch bidirectional output gearbox. The high efficiency and energy conservation three-clutch bidirectional output gearbox comprises a gearbox shell, an input shaft and an output shaft. A clutch is installed in the middle of the input shaft, a positive rotating driving wheel and a reverse rotating driving wheel are connected to the two ends of the input shaft, a joint is connected to the middle of the output shaft, a positive rotating driven wheel and a reverse rotating driven wheel are connected to the two ends of the output shaft, the positive rotating driving wheel corresponds to the positive rotating driven wheel and is in transmission connection with the positive rotating driven wheel, and the reverse rotating driving wheel corresponds to the reverse rotating driven wheel and is in transmission connection with the reverse rotating driven wheel. A hydraulic distributor is installed on the outer side of the gearbox shell, a distributor operation rod on the hydraulic distributor and an embedded type clutch operation handle on the clutch are both connected with an operator operation handle, and in work, the three states of a neutral position, ahead running and reverse running can be smoothly switched through control of the operator operation handle. The high efficiency and energy conservation three-clutchbidirectional output gearbox is compact in layout, more stable in transmission connection, low in noise, long in service life, capable of achieving switching in a driving process and high in transmission efficiency.
Owner:秦皇岛浩洋机械制造有限公司
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