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57results about How to "No tension" patented technology

Horizontal negative stiffness device with vertical damping function

The invention relates to a horizontal negative stiffness device with a vertical damping function. The horizontal negative stiffness device comprises a spherical hinge upper connecting plate, a spherical hinge lower connecting plate, a spherical hinge, an arched spherical face, pre-pressing disc springs, viscous dampers, limiting rods, a bearing base, nuts and inside hexagonal bolts; the spherical hinge upper connecting plate and the spherical hinge lower connecting plate are fixedly connected through the inside hexagonal bolts, and the spherical hinge is embedded into the spherical hinge lower connecting plate for fixation and makes contact with the arched spherical face in a pressure-bearing mode; the upper portions of the pre-pressing disc springs are in welding connection with the arched spherical face, and the lower portions of the pre-pressing disc springs are in welding connection with the bearing base. The viscous dampers are arranged at the internal diameters of the pre-pressing disc springs, the upper portions of the viscous dampers are in welding connection with the arched spherical face, and the lower portions of the viscous dampers are in welding connection with the bearing base. The viscous dampers and the pre-pressing disc springs cooperatively work, and meanwhile negative stiffness and damping force are generated; and the limiting rods are connected with the arched spherical face and the bearing base through the nuts, the pre-pressing states of the disc springs are achieved, and the limiting rods are symmetrically arranged on the two sides of the arched spherical face.
Owner:SHANGHAI UNIV

Hybrid mooring system for ultra-deepwater floating structures and mooring method

ActiveCN103482026ALength relaxationLength shrinkageAnchoring arrangementsMarine terraceMooring system
The invention discloses a hybrid mooring system for ultra-deepwater floating structures and a mooring method in the field of marine engineering oil and gas development. The mooring method includes: recording a motion response value of an ocean platform in real time by a GPS (global position system), when the motion response value is lower than a preset reasonable response value, judging the current ocean condition to be the ordinary ocean condition, and otherwise the limit ocean condition; when in the limit ocean condition, straining a tension-type mooring line, and transmitting tension A on a catenary-type mooring line and tension B on the tension-type mooring line to a control module by a second tension sensor and a first tension sensor respectively; calculating a value C through a formula by the control module, if the value C is smaller than a preset reasonable difference, keeping the tension-type mooring line constant in length, otherwise comparing the tension A with the tension B, if A is smaller than B, loosening the tension-type mooring line in length, and if A is larger than B, shrinking the tension-type mooring line in length. By the mooring method, intelligent switching between a single set of catenary-type mooring line system and the hybrid mooring system can be automatically completed, and the mooring method is simple and convenient and rapid.
Owner:佛山市榕岸海洋工程装备有限公司

High-speed copper line wire drawing machine uncoiling device

The invention discloses a high-speed copper line wire drawing machine uncoiling device, comprising a base [15], a rotating shaft [11], a lever [13] and a line guide rod [4], wherein, a round table [16] is arranged below the base [15]; a porcelain sleeve [10] is fixed on the upper end of the rotating shaft [11]; the lever [13] is connected on the rotating shaft [11], and the two ends of the lever [13] are respectively connected with line guide wheels [5]; one end of the line guide rod [4] is fixedly connected with the rotating shaft [11], and the other end of the line guide rod [4] is connected with a guide sleeve [3]; the rotating shaft [11] is horizontally fixedly connected with a horizontal shaft [7]; a screw [9] is arranged between the horizontal shaft [7] and the lever [13]; the end part of the screw is provided with a butterfly nut [8]; a tension spring [6] is sheathed on the screw; and a friction plate [14] is arranged below the line guide wheel at the right side of the rotating shaft [11], so as to lead a copper line [2] to generate friction force when in moving. The device of the invention can not damage the copper line when in uncoiling; and tension exists on the copper line all the time, thus copper line does not collide with other equipment even under the action of centripetal force.
Owner:TONGLING CHANG JIANG COPPER IND

High-speed four-axis winding machine

The invention discloses a high-speed four-axis winding machine. The high-speed four-axis winding machine comprises a machine frame arranged on a machine frame slide rail. A disc is arranged on the machine frame. A positioning disc is arranged at the central position of the disc. A positioning mechanism is arranged on the positioning disc and is driven by a positioning cylinder to be matched with the positioning disc for positioning. A station A , a station B, a station C and a station D are evenly arranged on the portions, close to the position of the edge of the disc, on the disc. A winding mechanism is arranged on each station. A driving rubber covered roller is arranged at the position, horizontally close to the station A, of the machine frame and is arranged in a rubber covered roller slide rail. The driving rubber covered roller slides in the rubber covered roller slide rail under the driving of a rubber covered roller cylinder connected with the driving rubber covered roller. An arc-shaped roller is arranged on the upper portion of the driving rubber covered roller. A cutter mechanism is arranged at the position, corresponding to the upper portion of the station A, on the machine frame and slides up and down in a cutter slide rail. The cutter slide rail is fixed to the machine frame. The problems that in the prior art, winding units are low in winding efficiency and poor in automation degree are solved.
Owner:XIAN AEROSPACE HUAYANG PRINTING & PACKAGING MACHINERY

Separable body surface physiological parameter acquisition and transmitting device

The invention discloses a separable body surface physiological parameter acquisition and transmitting device which comprises a signal acquisition and processing and transmitting body and a fixing body used for fixing the signal acquisition and processing and transmitting body on the surface of an organism, wherein the signal acquisition and processing and transmitting body is composed of a physiological signal acquisition module, a signal processing module, a communication module and a power module, the fixing body is composed of any one of a separable bonding body, a cover-sleeve-shaped sleeve body and a bag-sleeve-shaped sleeve body or composed of the separable bonding body and the cover-sleeve-shaped sleeve body or composed of the separable bonding body and the bag-sleeve-shaped sleeve body, and the separable bonding body, the cover-sleeve-shaped sleeve body or the bag-sleeve-shaped sleeve body is connected and fixed with the signal acquisition and processing and transmitting body in a separable mode and is provided with an opening used for the physiological signal acquisition module to acquire physiological signals on a body surface. The separable body surface physiological parameter acquisition and transmitting device enables the signal acquisition and processing and transmitting body to acquire the signals steadily through the opening of the fixing body and can be separated from the body surface without being damaged and used repeatedly, and therefore detection results are enabled to be real and reliable.
Owner:唐伊娜 +2

Arch column method for building large-scale underground structure in shallow buried rock stratums

The invention relates to an arch column method for building a large-scale underground structure in shallow buried rock stratums. The method comprises the following steps of: 1, separately excavating underground one-storey middle pilot tunnels, constructing primary supports, and constructing pile foundations and steel pipe columns at the positions of middle columns; 2, constructing secondary linings including underground one-storey floors, steel pipe columns, roof timbers, roof arches and the like, and waterproof layers in middle tunnels; 3, symmetrically excavating underground one-storey two-side pilot tunnels, constructing primary supports, and constructing pile foundations and side columns under side walls; 4, constructing secondary linings including floors, vertical walls, edge arches and the like in side tunnels and waterproof layers, and disassembling temporary supports; 5, under the protection of underground one-storey structures, downwards excavating an underground second-storey structure with large-scale machinery, besides, constructing side wall bolt spray supports or slab rib type anchored bolt retaining wall supports, and pouring underground second-storey floors, side walls and waterproof layers; and 6, sequentially downwards excavating a plurality of underground storeys, besides, constructing side wall supports, and pouring floors, side walls and waterproof layers of corresponding storeys. The method disclosed by the invention is convenient to construct, high in efficiency, small in construction risks, good in stratum deformation control, and low in building cost.
Owner:BEIJING URBAN CONSTR DESIGN & DEV GRP CO

Wire saw for cutting pipelines

The invention discloses a wire saw for cutting pipelines. The wire saw comprises a support frame, a tension self-adaptation adjusting mechanism, a cutting mechanism and a clamping mechanism, wherein the cutting mechanism and the clamping mechanism are respectively disposed on two sides of the support frame; the clamping mechanism comprises a front clamp plate, a rear clamp plate, a left clamping jaw, a right clamping jaw, a left air cylinder and a right air cylinder, and the left air cylinder and the right air cylinder are mounted between the front clamp plate and the rear clamp plate; the cutting mechanism comprises a frame body, a drive wheel, a tension wheel and two driven wheels, the drive wheel, the tension wheel and the two driven wheels are respectively located at four corners of the frame body, an adjusting telescopic support rod is disposed between the other end corner of a main support and the frame body, and the tension self-adaptation adjusting mechanism is disposed between the other end corner of a driven support and the frame body; the tension self-adaptation adjusting mechanism further comprises a connecting shaft sleeve, a movable pin, a connecting plate, a slide plate, a hydraulic cylinder and loop bar, and a spring sleeves the loop bar. The wire saw has the advantages that the wire saw is high in reliability, stability, safety and universality and simple to operate, work stability is increased, the requirements of various pipelines can be met, the universality and operability of the wire saw are increased.
Owner:苏州博合雅工程材料科技有限公司

A horizontal negative stiffness device with vertical shock absorption function

The invention relates to a horizontal negative stiffness device with a vertical damping function. The horizontal negative stiffness device comprises a spherical hinge upper connecting plate, a spherical hinge lower connecting plate, a spherical hinge, an arched spherical face, pre-pressing disc springs, viscous dampers, limiting rods, a bearing base, nuts and inside hexagonal bolts; the spherical hinge upper connecting plate and the spherical hinge lower connecting plate are fixedly connected through the inside hexagonal bolts, and the spherical hinge is embedded into the spherical hinge lower connecting plate for fixation and makes contact with the arched spherical face in a pressure-bearing mode; the upper portions of the pre-pressing disc springs are in welding connection with the arched spherical face, and the lower portions of the pre-pressing disc springs are in welding connection with the bearing base. The viscous dampers are arranged at the internal diameters of the pre-pressing disc springs, the upper portions of the viscous dampers are in welding connection with the arched spherical face, and the lower portions of the viscous dampers are in welding connection with the bearing base. The viscous dampers and the pre-pressing disc springs cooperatively work, and meanwhile negative stiffness and damping force are generated; and the limiting rods are connected with the arched spherical face and the bearing base through the nuts, the pre-pressing states of the disc springs are achieved, and the limiting rods are symmetrically arranged on the two sides of the arched spherical face.
Owner:SHANGHAI UNIV

Automatic paper sheet paging device for teaching

InactiveCN110950114AGuaranteed stability and firmnessSimple structureArticle separationPaper sheetControl trunk
The invention discloses an automatic paper sheet paging device for teaching. The automatic paper sheet paging device for teaching comprises a machine frame, a paging mechanism and a transporting mechanism, wherein the paging mechanism comprises an operating platform, a rolling module which is arranged on the operating platform and used for enabling paper sheets to move at a uniform speed on the operating platform, and a speed adjusting module which is arranged on the operating platform and used for enabling the paper sheets to move at a variable speed on the operating platform; the transporting mechanism comprises a transporting platform which is connected with the operating platform, wherein the transporting platform comprises a driving pulley and a driven pulley which are located at twoends of the transporting platform, and a conveyor belt which is arranged on the external peripheral walls of the driving pulley and the driven pulley in a sleeving manner; a material collecting assembly which is used for collecting paper sheets is arranged at one end of the transporting platform; a supporting assembly which is used for supporting the transporting platform and the operating platform is arranged at the lower end of the transporting platform; and a control box which is used for controlling the paging mechanism and the transporting mechanism is arranged on the operating platform.The automatic paper sheet paging device for teaching disclosed by the invention is simple in structure, convenient to use and high in paging efficiency, and a paper sheet repeating phenomenon cannotappear.
Owner:上栗县金山镇中学

Conveying belt tensioning device used for workshop and having sweeping function

The invention discloses a conveyor belt tensioning device for belt cleaning in a workshop, which comprises a conveyor belt and two conveying support rods, a vertical rod perpendicular to it is arranged on the middle part of the horizontal plate, and a support plate is arranged on the top of the vertical rod , the end surface of the support plate is provided with a tensioning bracket, and the tensioning bracket is provided with two horizontal shafts, the two horizontal shafts are respectively located on both sides of the conveyor belt, and tensioning wheels are installed on the two horizontal shafts, so Two symmetrical cleaning rods are also arranged on the end surface of the support plate, a mounting plate is arranged on the top of the cleaning rod, a cleaning brush is arranged on the mounting plate, a rotating shaft is arranged between the two side plates, and a rotating shaft is arranged on the rotating shaft. A cam is installed, and the vertical rod passes through the through hole on the horizontal plate and is connected with the edge of the cam through a sliding mechanism, and one end of the rotating shaft is provided with a rotating mechanism. The invention has a simple structure, can clean the conveyor belt while tensioning the conveyor belt, has simple operation, is driven without power, can save energy, and has strong practicability.
Owner:金波
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