30results about How to "Reduce damage and deformation" patented technology

The invention discloses a large-scale underground cavern group layout method applied to water conservancy and hydropower engineering and underground storage cavern engineering. The underground cavern group layout method can give overall consideration to major factors having influences on underground cavern adjoining rock stability, particularly gives overall consideration to the crucial factor of the rock strength-stress ratio, enables a large-scale underground cavern group layout designing scheme to be scientific, and is overall in considered factors. The method includes the following steps: firstly, determining the positions of main caverns, then determining the axis directions of the main caverns, determining the thickness of a rock pillar between the main caverns, and finally determining cavern shapes of the main caverns. When the cavern shapes of the main caverns are determined, each main cavern is divided into an underground main power house, a main transformer chamber and a tail water surge chamber according to functions, the hole shape of each underground main power house and the hole shape of each main transformer chamber are in circular arch straight wall shapes or egg shapes, and each tail water surge chamber is in a cylinder shape or a gallery shape.

The invention discloses a clamping groove assembling type steel pipe column and steel beam connecting joint and a construction method thereof. A plurality of H-shaped steel beams are horizontally connected to the side wall of the periphery of a steel pipe column. A steel beam end plate extending in the beam height direction of the steel pipe column is fixedly welded to the end face of each H-shaped steel beam. A U-shaped clamping groove is welded to the lower side of the steel pipe column. The lower sides of the steel beam end plates are inserted into the U-shaped clamping groove. An annular movable steel hoop is installed on the upper side of the steel pipe column. The upper ends of the steel beam end plates are hooped and connected through the movable steel hoop or hooped and connected in the mode that a reinforcing plate is matched with the movable steel hoop. Insertion plates for fastening are inserted into gaps between the U-shaped clamping groove and the steel beam end plates. An annular reinforcing plate is welded to the portion, matched with the movable steel hoop, of the middle of the inner wall of the reinforcing plate. An end plate reinforcing plate is fixedly arranged at the joint of an upper wing edge and the middle of the upper end of each steel beam end plate. A notch is formed in the middle of the annular reinforcing plate on each side. The clamping groove assembling type steel pipe column and steel beam connecting joint has the advantages that the industrial degree is high, no welding or bolt connection is needed on a construction site, and the construction speed is high, and has better technical benefits.

The invention discloses a large-scale underground cavern group arrangement design method applied to hydraulic and hydroelectric engineering and underground storage cavern engineering. According to the arrangement design method, principal factors, especially the essential factor of the rock strength-stress ratio, influencing underground cavern surrounding rock stability can be comprehensively taken into account, the designing scheme for large-scale underground cavern group arrangement can be more scientific, and considered factors are more comprehensive. The position of a main cave is determined at first, the orientation of an axis of the main cave is determined, then the thickness of a rock pillar in the main cave is determined, and at last the shape of the main cave is determined. When the orientation of the axis of the main cave is determined, the trend of a rock mass main structural surface on a construction site and the orientation of the maximum principal stress are measured at first, the orientation of the axis of the main cave is determined according to an included angle between the axis of the main cave and the trend of the rock mass main structural surface and an included angle between the axis of the main cave and the orientation of the maximum principal stress, the included angle between the axis of the main cave and the trend of the rock mass main structural surface is not less than 40 degrees, and the included angle between the axis of the main cave and the orientation of the maximum principal stress is 0-40 degrees.

The invention discloses a large-scale underground cavern group arrangement method applied to hydraulic and hydroelectric engineering and underground storage cavern engineering. According to the arrangement method, principal factors, especially the essential factor of the rock strength-stress ratio, influencing underground cavern surrounding rock stability can be comprehensively taken into account, the designing scheme for large-scale underground cavern group arrangement can be more scientific, and considered factors are more comprehensive. The position of a main cave is determined at first, the orientation of an axis of the main cave is determined, then the thickness of a rock pillar in the main cave is determined, and at last the shape of the main cave is determined. When the position of the main cave is determined, the rock strength-stress ratio on a construction site is firstly measured, and when the rock strength-stress ratio is 2.0-4.0, the thickness from the outer edge of the main cave to a rock of a valley slope surface should be larger than 400m; when the rock strength-stress ratio is 4.0-7.0, the thickness from the outer edge of the main cave to the rock of the valley slope surface is 200-400m; when the rock strength-stress ratio is larger than 7.0, the thickness from the outer edge of the main cave to a rock of the valley slope surface is 150-200m.

A screw anchor for insertion into concrete is disclosed. The screw anchor has an essentially cylindrical base body on whose outer lateral surface an external thread is provided and which has a receptacle arranged in the direction of the cylinder longitudinal axis originating from an axial end face. The receptacle has a load-bearing structure originating from the axial end face. A tool receptacle extending essentially in the direction of the cylinder longitudinal axis is provided in the receptacle, wherein the tool receptacle extends further into the receptacle than the load-bearing structure from the end face to the rotary drive of the screw anchor in the cylinder longitudinal direction.

The invention discloses a novel automobile hub. The novel automobile hub comprises a rim, an axle hub and a spoke set, wherein the wheel edge on the edge of the rim is provided with a plurality of clamping bars which are evenly distributed along the outer circumference of the wheel edge and used for clamping a tire, the axle hub is arranged on the axis of the rim, the spoke set comprises a plurality of first spokes and a plurality of second spokes, the first spokes and the second spokes are evenly distributed along the outer circumference of the axle hub in a radial shape, connected to the two sides of the rim respectively and used for supporting the rim, the width of the two side ends of each first spoke is larger than the width of the center position of the first spoke, first inclination angles opposite in direction are formed at the two side ends of each first spoke and are opposite to the outer surface of the first spoke, the two side ends of each first spoke are each provided with a cavity, and reinforcing ribs connected to the rim and the axle hub are further arranged on the outer surfaces of the first spokes; the rim and the axle hub are connected through the spoke set so that an automobile hub body can be formed. The novel automobile hub has the advantages of being good in stability, light in weight, fast in heat dissipation and high in safety coefficient.

The invention provides a battery pack and a preparation method of the battery pack. The battery pack includes multiple batteries, wherein a plurality of batteries are arranged in sequence, each battery comprises a shell and a battery cell arranged in the shell, the battery cell is filled with electrolyte, a functional layer is arranged on a first side of the battery cell in at least one battery, the first side of the battery cell is the side, facing the arrangement direction of the batteries, of the battery cell, and the functional layer is provided with a pore structure. The battery pack is advantaged in that the electrolyte can be stored through a pore structure in the functional layer, the storage capacity of the electrolyte in the battery is improved, the electrolyte can be released inthe compression deformation process of the battery, the functional layer has certain buffering and protecting effects, a problem that the battery pack deforms or is damaged when being extruded or collided by the outside is solved, safety of the battery is improved, the service life of the battery is prolonged, and use requirements are met.

The invention discloses a polaroid stripping machine which comprises a base cabinet, a support frame, a workbench unit, a rotating shaft unit, a heating device, a destaticizing device, a first control cabinet unit and a second control cabinet. The support frame is fixedly arranged on the base cabinet. The workbench unit is arranged on the support frame. The rotating shaft unit is fixedly disposed on the top of the base cabinet and positioned below the workbench unit. The heating device is fixedly arranged on the top of the base cabinet and positioned at one side of the rotating shaft unit. The destaticizing device is fixedly arranged at one side of the workbench unit. The first control cabinet unit is mounted on the base cabinet. The second control cabinet is movably arranged on the base cabinet. The polaroid stripping machine has advantages of good polaroid stripping effect and high work efficiency.

A method of manufacturing an electronic device is provided. The method includes forming a stack structure by placing a to-be-peeled layer on a substrate, applying thermal shock to the stack structure, detaching the to-be-peeled layer from the substrate, and transferring the detached to-be-peeled layer to a target substrate.

The invention discloses a tent supporting rod which comprises an aluminum alloy base rod and a coating outside the aluminum alloy base rod. The tent supporting rod is characterized in that the aluminum alloy base rod consists of the following components in parts by weight: 2-3 parts of Cu, 4-6 parts of Ti, 0.2-1 part of Fe, 6-8 parts of Zn, 4-7 parts of Mg, 1-2 parts of Ni, 0.2-0.5 part of Zr, 1-2 parts of Si, and 65-72 parts of Al; and the coating comprises the following materials: epoxy resin, pigment, a plasticizer and a flame retardant. The supporting rod has high strength, high elastic modulus, relatively good wear resistance and a relatively long service life.

The invention discloses a soft soil stratum foundation pit excavation method which is characterized by comprising the following steps: 1) foundation pit support pile construction: measuring the driving position of a support pile according to the size of a foundation pit, firstly driving vertical columnar piles according to the measuring position, driving vertical sheet piles among the columnar piles, and driving the vertical sheet piles into a certain height above the ground, the sinking height of the sheet piles is consistent with the sinking elevation of the columnar piles, and enclosing purlins are arranged on the outer sides of the supporting piles. The trestle bridge in the width direction of the foundation pit is erected on the supporting piles, the trestle bridge can move relative to the foundation pit in the length direction of the foundation pit, the excavator is hoisted to the trestle bridge through a crane, the foundation pit is excavated, advancing and retreating of the excavator are achieved through moving of the trestle bridge, deep sinking of the excavator is avoided due to the fact that the excavator does not make direct contact with the soft soil stratum, and the construction efficiency is improved. A traditional excavation-drying-excavation technology is not needed, the construction period is shortened, the utilization rate of equipment is improved, the operation space of the excavator located on the trestle is increased, and excavation of the foundation pit is better facilitated.

The invention provides a self-adaptive regulation method, device and electronic equipment for blade machining process, belonging to the technical field of aero-engine milling. The provided self-adaptive control method for a blade machining process includes: acquiring profile feature data of a blade to be processed, and constructing a prediction model according to the profile feature data. The prediction model is compared with the pre-stored theoretical model, and the first error data of the theoretical model and the prediction model is calculated. Through the obtained first error data, the tool path of the blade to be processed and the milling parameters of the machine tool are adaptively adjusted, which improves the processing quality and accuracy of the blade and reduces the damage and deformation of the parts.

According to the technical scheme, an automobile back door three-dimensional shell sharing an outer shell is characterized in that the edge of the outer shell bends towards the inner side, is turned over for form a J shape and completely covers the edge of an inner shell, a medium material layer, an adhering material layer, a color layer and a detachable connection fixing devices are disposed at the connection of an outer transparent material layer and the shell, and the detachable connection fixing devices can be a plurality of screw holes, screws, nuts, through holes and/or bolts. By the automobile back door three-dimensional shell, connection between the outer shell of the automobile back door three-dimensional shell sharing the outer shell and inner shell and connection between the shell and the edge of the outer transparent material layer can be tight, seamless, firm, anti-impact and invisible, and color of the connection can be corresponded to that of three-dimensional decoration.