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240 results about "Simple machine" patented technology

A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force.

Optimized design method of overall static rigidity of machine

InactiveCN104156501AIncrease the static stiffness value at the end of the machineReduce stress deformationSpecial data processing applicationsReduced modelElement model
The invention discloses an optimized design method of overall static rigidity of a machine. The method includes the steps of establishing a simple machine model by Pro / E software; importing the simple machine model into SAMCEF software to establish a machine finite element model; parameterizing rigidity features of large structures of the machine to determine design parameters and a design space; selecting test sample points for finite element analysis by a central composite experiment design method; subjecting the test sample points to finite element analysis to obtain machine static rigidity response values of the test sample points; establishing a response surface model for large structure rigidity feature parameters and machine static rigidity; analyzing sensitivities of large structure rigidities to the machine static rigidity so as to determine a static rigidity weak link, and performing optimized design. The optimized design method of overall static rigidity of the machine has the advantages that the sensitivities of the structures of the machine to the machine static rigidity are effectively determined, the weak link restricting the improvement of the machine static rigidity is effectively found, and accordingly important basis for the optimized design of machine structure is provided to guide designers to optimally design the weak large structures of the machine.
Owner:TIANJIN UNIV

Method for mounting prefabricated members of roof or floor in place and mounting equipment

The invention provides a method for mounting steel members or prefabricated members of a roof or floor in place and equipment for realizing in-place mounting of the steel members or the prefabricated members of the roof or floor. In the method, the steel members or the prefabricated members (members for short) stacked on the roof or floor are mounted at a position in place; the equipment comprises a gallows frame, a front trolley and a rear trolley, wherein the gallows frame comprises two upright posts, a cross beam and at least two hanging pulleys; the two upright posts are supported against the two ends of the cross beam respectively; the hanging pulleys are hung on the cross beam; the front trolley comprises vehicle wheels, a vehicle body, a movable supporting surface and a roller; the vehicle body is arranged on the vehicle wheels; the movable supporting surface and the roller are arranged on the vehicle body for supporting the members to be mounted; the movable supporting surface is connected with the vehicle body through a lifting mechanism; the roller and the movable supporting surface are flush when positioned at the high position; the rear trolley comprises vehicle wheels, a vehicle body and a movable supporting surface; and the movable supporting surface is connected with the vehicle body through a lifting mechanism. By using some simple machines, the members are stably mounted at the position in place to save time and labor.
Owner:SHENZHEN CONSTR GRP

Metal plate pulling-pressing experiment device in pure mechanical structure form

The invention discloses a metal plate pulling-pressing experiment device in a pure mechanical structure form. The device comprises an upper connection rod, a locking nut, an upper clamp block (I), an upper clamp block (II), a lateral clamping plate, a lower clamp block (I), a lower clamp block (II), guide rollers, a clamp base plate, and a lower connection base plate, and is characterized in that two sides of a test piece are clamped by the lateral clamping plate, the upper end of the test piece is clamped by the upper clamp block (I) and the upper clamp block (II), then the upper clamp block (I) and the upper clamp block (II) are connected by the upper connection rod, through the locking nut, the upper connection rod is locked on a sensor of a tensile test machine, two side of the lower end of the test piece are provided with a guide roller respectively, the lower end of the test piece is clamped by the lower clamp block (I) and the lower clamp block (II), and then the lower clamp block (I) and the lower clamp block (II) are fixed by the clamp base plate. Through simple mechanical principle and mould technology, pricy hydraulic equipment and air pressure equipment are not needed, the structure is simple, the processing is easy, the experiment cost is saved, the operation is convenient, and the experiment results are precise.
Owner:DALIAN UNIV OF TECH

Method for preparing micro-fluidic chip

InactiveCN102218595AGood optical processing performanceGood chemical stabilityLaser beam welding apparatusMachine partsGlass chip
The invention relates to a method for preparing a micro-fluidic chip. A glass substrate sheet is ablated by a femto-second laser; during the machining process, a cleaning solution always carries out effective cleaning on a machining part inside the sheet; heat treatment is carried out on the glass substrate sheet that is machined by the femto-second laser; after the heat treatment, the diameter of a micro-fluidic passage and the dimension of a liquid bath in the sheet are reduced; the internal surfaces of the micro-fluidic passage and the liquid bath are smooth; a PDMS (Polydimethylsiloxane) sheet is selected as a connecting body; the position on the PDMS sheet corresponding to the longitudinal passage opening position of a micro-fluidic glass chip is bored; and subsequently the PDMS sheet is bonded with the micro-fluidic glass chip, thereby obtaining the micro-fluidic chip. The method has simple machining process and ensures that the laser can carry out continuously stable ablation on substration material; and the integrated micro-fluidic chip with complex and multi-layer structures can be prepared in the glass substrate. The prepared micro-fluidic chip has the characteristics of miniaturization and integration, has the functions of separation, reaction and detection, and can be widely applied to the analysis fields.
Owner:HARBIN INST OF TECH AT WEIHAI

Ergonomic Support and Control Harness for Boom Pole Operation

This invention relates generally to film and television production. It is designed to easily control and support a boom pole for long periods of time while allowing the operator to maintain comfortable ergonomic positioning and movement of the head, arm and hands during operation. It achieves this by means of a simple machine. The basic embodiment of the invention consists of five (5) main components. 1. An ergonomically positioned control handle which the operator grips; the boom pole itself (or a holder to which may be fastened in position an existing boom pole), which is rigidly connected to the control handles. 3. A means for pivoting (the fulcrum), or other machine means for transferring force, mounted to a harness, and to which is attached the connecting segment, allowing the boom to rotate and move when force is applied to the control handles. 4. Counterweights which can be fastened to the connecting segment at the farthest point possible opposite the fulcrum from the extended end of the boom pole, and/or mechanisms for fastening such weights. 5. A wearable harness including shoulder straps which can be connected in front, and optionally including a belt around the waist where additional support is required, and to which is mounted, on the back, the pivoting assembly, and the rest of the apparatus. By applying force to the control handle, the operator is able to move the boom pole up and down, side to side, or to rotate it.
Owner:HOWELL EDWARD LAMAR

High-altitude framework type simple plate supporting machine

The present invention relates to a high altitude frame simple machine for an erecting plate, the structure is stated below: a gantry binding beam is connected with an upper column of the gantry, which is connected with a walkway beam of a hoisting truss, which is connected with a lower column of the gantry. The hoisting trolley is arranged on the hoisting truss. The front end and the rear end of the hoisting truss are positioned on the hoisting truss. A front walking wheel box group and a rear walking wheel box group are arranged under the lower column of the gantry; the front walking wheel box group and the rear walking wheel box group are arranged at a walkway of a transportation board of a trolley and a front walking wheel rail and a rear walking wheel are arranged at the lower position of the walkway of the transportation road; a plurality of upper stringer joints of the steel truss are arranged on an upper stringer rod of the steel truss, a longitudinal beam of the steel truss beam is connected with the upper string rod of the steel truss beam, and an electric hoist is positioned at the bottom of the gantry binding beam. The present invention has the advantages of free transverse and longitudinal travel, four concrete bridge decks between joints are erected one time; normal universal rod structures are used to make a frame structure. the present invention has the advantages of sound stability, high air-load resistance, short manufacturing time and low production cost, easy and convenient use.
Owner:THE FOURTH ENG CO LTD OF CHINA ZHONGTIEMAJOR BRIDGE ENG GRP

Soil turning machine

The invention relates to a soil turning machine. The soil turning machine comprises a rake, a rake handle and a prying rod, which are arranged on a rack, wherein the prying rod is downwards connected with the rack, the rear end of the prying rod is connected with a reciprocating mechanism A, and the other end of the reciprocating mechanism A is connected with the rake handle connected to the rear end of the rake, so that the rake, the prying rod and the reciprocating mechanism A form a triangular soil turning structure; the rake handle is connected to the rear end of the prying rod, and is movably connected to a sliding frame through a coil spring or is connected to the rack or another part on the rack through a retractable spring; a support structure capable of supporting the rake handle is arranged on the sliding frame; the sliding frame is also connected with a reciprocating mechanism B; the other end of the reciprocating mechanism B is connected with a bracket; a chain cable is also arranged on the rake handle; the other end of the chain cable is connected with the bracket arranged at the tail end of the rack. The soil turning machine has the characteristics of convenience in use, simple structure, high mechanization degree, reduction in labor cost and high working efficiency, water chestnuts, arrowheads and the like can be collected in cold winter, and the probable problems of manual collection are solved.
Owner:黄德胜

Electronic shifter shift calibration equipment and operation method thereof

PendingCN111323215AEasy to disassemble and assemble quicklyConvenient and fast positioningMachine part testingElectric/magnetic position measurementsControl engineeringMechanical equipment
Electronic shifter shift calibration equipment and an operation method thereof belong to the technical field of mechanical equipment, and the electronic shifter shift calibration equipment comprises amechanical arm, a force sensor, a shift link mechanism, a quick change mechanism, a horizontal table, a magnetic sensor and a control cabinet. The shift link mechanism and the quick changing mechanism can be customized according to different product structures and appearances and can adapt to products of various shapes, and the problem that the whole equipment is repeatedly designed is avoided. The numerical information of the operating force value, the gear shifting angle and the sensing angle can be accurately detected, the coordinate graph can be drawn, the proper numerical value is selected for gear calibration according to the detected numerical value and the detected coordinate graph, the calibration precision is high, the detection method is convenient and simple, and special training is not needed. The equipment has the advantages of being simple in design, flexible in mechanical structure design, short in earlier-stage scheme design verification period and the like, multi-product verification can be conducted, and therefore cost is saved.
Owner:GEARCHIEF EISSMANN CHANGCHUN AUTOMOTIVE PARTS

Cable and steel wire rope roller supporting device

The invention relates to a cable and steel wire rope laying equipment, in particular to an improved cable and steel wire rope roller support frame. The improved cable and steel wire rope roller support frame comprises two mutually independent support frames and a rolling rod, wherein each support frame comprises a support frame body, a movable bracket, a jack and a positioning pin shaft; each support frame body is provided with a steel pipe arranged vertically; the movable bracket is installed in each steel pipe; the jacks are installed below the movable brackets; the movable brackets and the steel pipes are provided with height regulation holes matched with the positioning pin shafts; the positioning pin shafts are inserted in the height regulation holes to position the movable brackets; the rolling rod is horizontally arranged; and two ends of the rolling rod are arranged on two support frames. The cable and steel wire rope laying equipment has the beneficial effect that the device has simple machining technology, is convenient and flexible to install and use, can be assembled on site if being used; as height of the cable and steel wire rope laying equipment can be regulated by backup movable supports with different heights, the cable and steel wire rope laying equipment can be reused, and further the investment in construction equipment such as cranes and the like can be reduced and manpower and materials can be saved.
Owner:CHINA COAL NO 5 CONSTR
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