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248 results about "Pull off force" patented technology
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Weightlifting system
A weightlifting system includes a frame with lower, middle, and upper pulley stations mounted therein. A load attachment structure is provided within the system. A cable-pulley system includes a plurality of fixed pulleys mounted to the frame, first and second moveable pulleys, and a floating load pulley mounted to the load attachment structure. A plurality of cables is collectively routed through the first and second movable pulleys, the plurality of fixed pulleys, the floating load pulley, and the lower, middle, and upper pulley stations. When a first pulling force is applied to a first cable end accessible from the lower pulley station, the first movable pulley and the load pulley translate. When a second pulling force is applied to a second cable end accessible from the upper pulley station, the second movable pulley and the load pulley translate. When a third pulling force is applied to a third cable end accessible from the middle pulley station, only the load pulley translates.
Owner:REP FITNESS LLC
Push-pull device for optical fiber connector and optical fiber connector
The utility model relates to the technical field of optical fiber connectors, and discloses a push-pull device for an optical fiber connector, and the device comprises a housing which is in transmission connection with an insertion core; the tail sleeve is connected with the shell through at least two crossed limiting structures, and the at least two crossed limiting structures are asymmetrically distributed in the direction perpendicular to the axial direction of the push-pull device; when the tail sleeve is pushed and pulled, the shell and the insertion core can move in the axial direction of the push-pull device, and the push-pull tail sleeve is flexible in the axial direction of the push-pull device. The asymmetrically-arranged cross limiting structures can form restraining force distributed in a staggered mode in the radial direction and the axial direction, and the inclination or torsion phenomenon caused by single-side stress of the outer shell and the tail sleeve is effectively restrained. Due to asymmetric distribution, push-pull force can be dispersed and transmitted in different directions, stress concentration or local abrasion caused by a symmetric structure is avoided, the loosening or clamping stagnation phenomenon caused by external force or improper operation is reduced, and the stability and reliability of connection between the tail sleeve and the shell are improved. The utility model further discloses an optical fiber connector.
Owner:EAST POINT COMM TECH CO LTD
Universal tool for testing insertion and extraction force of connector
ActiveCN223229129UMachine part testingApparatus for force/torque/work measurementTester deviceStructural engineering
The utility model relates to the technical field of tools, and discloses a connector plugging force test universal tool which is fixedly mounted on a push-pull force tester and comprises a mounting seat, a placing assembly and a pushing assembly, the mounting seat is fixedly mounted on a force measuring rod of the push-pull force tester, and the placing assembly is arranged on the mounting seat; a plurality of connecting plugs of different models are arranged at the positions, far away from the push-pull force tester, of the mounting seat, and the connecting plugs are matched with a to-be-tested connector in a plugging manner; the placing assembly is detachably mounted on the mounting base, a guide channel is arranged in the placing assembly, when the connecting plug is connected with the connector to be tested, the axis of the guide channel coincides with the axis of the connecting plug, and the connector to be tested is in sliding fit with the guide channel; the pushing assembly is in plugging cooperation with the guiding channel and abuts against the to-be-tested connector. The testing device has the advantage that the plugging and unplugging force of various types of connectors can be conveniently tested.
Owner:WUXI HUACE ELECTRONICS SYST
Pressing force and pulling force detecting controller
PendingUS20260056071A1Measurement of force applied to control membersInput/output processes for data processingClassical mechanicsControl theory
A controller that detects a pressing force and a pulling force only by the movement of a fingertip is provided. The controller of the present invention that detects a pressing force and a pulling force includes a housing, a film-type three-axis force sensor, and an operating unit. The force sensor is disposed on the surface of the housing and is configured to detect forces along three axes applied by a finger of a user. The operating unit covers the surface of the active area of the force sensor. The operating unit also has a pressing surface to be pressed by a finger pad of the finger; and a constraining surface on which the finger is to be constrained such that when the finger moves in a direction away from the pressing surface, a pulling force is applied to the surface of the active area of the force sensor.
Owner:NISSHA PRINTING CO LTD
Design method and device for nonlinear term offset moving magnetic vibrator and application of design method and device
The design method of the non-linear term offset moving-magnet vibrator meets the following conditions: (1) a moving-magnet vibrator body comprises an outer cylinder, a vibration transmission sheet, a stator assembly and a rotor assembly; and (2) the mover assembly is subjected to electromagnetic acting force of pushing force and pulling force in pairs at the same time and presents a push-pull type structural characteristic, so that linear terms in the acting force borne by the mover assembly are overlapped and become larger, and non-linear terms in the acting force borne by the mover assembly are partially or completely counteracted and are reduced, so that the linear terms in the acting force borne by the mover assembly are reduced, and the linear terms in the acting force borne by the mover assembly are reduced. And obtaining the moving magnet type vibrator with the counteracted nonlinear term.
Owner:IMOVE INTELLIGENT TECHNOLOGIES (DONGGUAN) CO LTD
Cable assembly anti-drawing force testing device and cable assembly anti-drawing force testing method
PendingCN120628800AMaterial strength using tensile/compressive forcesStructural engineeringElectric cables
The invention relates to a cable assembly anti-drawing force testing device and a cable assembly anti-drawing force testing method, the cable assembly anti-drawing force testing device comprises a cable clamp and a drawing assembly, the drawing assembly comprises a U-shaped support, a base and a slide block, the base is fixedly connected with the support, the base is provided with a guide hole, and the slide block is sleeved in the guide hole; the cable clamp comprises a first clamping block, a second clamping block and a U-shaped guide rod, the two ends of the first clamping block are fixedly connected with the two ends of the second clamping block through a first screw and a second screw respectively, the axial direction of the first screw is perpendicular to the axial direction of the second screw, and the open end of the guide rod is fixedly connected with the first clamping block and the second clamping block. The method for testing the tensile force of the cable assembly comprises the step of testing the tensile force by using the testing device. By adopting the technical scheme provided by the invention, a tension load acts on the connector, and a clamping force acts on the guide rod, so that a cable insulation sleeve is prevented from being worn, a cable assembly is prevented from rotating, and an operator is prevented from misjudging a test result.
Owner:GUIZHOU SPACE APPLIANCE CO LTD +1
Load detection device of beam lifting appliance
ActiveCN223377069UMaterial strength using tensile/compressive forcesStructural engineeringMechanical engineering
Owner:ZHENGZHOU ENG CO LTD CHINA RAILWAY SEVENTH GRP
Push-pull type network connector
The invention belongs to the technical field of connecting devices, and particularly relates to a push-pull type network connector, aiming at signal interruption and equipment interface damage caused by overlarge pulling force, the push-pull type network connector comprises an equipment main body, one side of the equipment main body is provided with a connecting seat, and a connector lug is inserted in the connecting seat; the connector lug is provided with a tensile module, and the tensile module comprises a metal telescopic protective sleeve. The push-pull type network connector has the advantages that accidental pulling force is converted into force for driving the locking mechanism to integrally move backwards through a linkage structure by the tensile module, direct unlocking is changed into follow-up buffering, mistaken pulling is fundamentally avoided, automatic reset is achieved in cooperation with an elastic element, continuous and reliable connection is guaranteed, and on the premise that complex electric control is not increased, the safety of the network connector is improved. The impact is effectively absorbed to protect the interface, the signal transmission is not interrupted under the conventional pulling, and the anti-interference capability and the stability of the connector are obviously improved.
Owner:JIAXUN (HUIZHOU) INTELLIGENT TECH CO LTD
Thin-wall annular workpiece self-relief clamping device and method
According to the thin-wall annular workpiece self-relief clamping device, a flange plate is used for being connected with a machine tool, one end of the flange plate is connected with a positioning body, a push-pull shaft is connected with a supporting disc, and the supporting disc is limited between the positioning body and the flange plate; one end of the positioning body is connected with a positioning backer, an internal expansion chuck is arranged between the positioning backer and the positioning body in a sliding fit mode, the internal expansion chuck is connected to the push-pull shaft, the positioning body is in contact with the internal expansion chuck through a conical surface, a workpiece is arranged on the outer circle face of the internal expansion chuck in a sleeving mode, and the end face of the workpiece abuts against one end of the positioning backer; the positioning device further comprises an elastic piece which is arranged between the flange plate and the supporting plate or between the supporting plate and the positioning body. Compared with the prior art, the elastic piece is additionally arranged between the flange plate and the supporting plate, the elastic piece plays a role in releasing force, the normal stress of the elastic piece on the push-pull shaft just counteracts the overlarge pulling force of the hydraulic oil cylinder on the push-pull shaft, and deformation of the thin-wall annular workpiece is avoided.
Owner:江苏双环齿轮有限公司
A new multifunctional anchoring device for pull-off tests
ActiveCN115389316BMaterial strength using tensile/compressive forcesClassical mechanicsStructural engineering
The present application relates to a kind of new multifunctional anchoring device for pull test, the device includes two identical clamps, respectively, upper clamping part and lower clamping part are arranged vertically, each of the described clamp includes end plate connected to apply pressure and support plate to clamp one end of test piece, the end plate and support plate are connected by screw rod, load transfer block is arranged on the screw rod to transfer force, square hole is respectively opened on the support plate to pass through load transfer block, the press is used to apply pressure to upper end plate and lower end plate, the upper clamping part, lower clamping part, press and load transfer block cooperate to realize the tension test and pressure test to test piece.Compared with prior art, the present application has the advantages of simple structure, easy assembly and disassembly and improving the accuracy of measurement data.
Owner:SHANGHAI NORMAL UNIVERSITY
Pull-off force and cord length testing device and testing method
The application provides a pull-off force and rope length testing device and a testing method. The pull-off force and rope length testing device comprises a testing table, a first clamp and a second clamp configured to clamp a first end and a second end of a rope to be tested respectively, the second clamp being movably arranged on the testing table, a force sensor fixed to the testing table, a detection end of the force sensor being connected with the first clamp, a displacement sensor and a driving assembly, both being arranged on the testing table and connected with the second clamp respectively, the driving assembly being configured to drive the second clamp to move relative to the first clamp so that the rope to be tested bears a preset pull-off force, and a control unit electrically connected with the force sensor, the displacement sensor and the driving assembly. The application can automatically and uniformly load and maintain pressure through the driving assembly, the force sensor and the displacement sensor can detect the pull-off force and the displacement in real time, the control unit can acquire the pull-off force and the displacement data in real time and control the driving assembly to start and stop, thereby realizing a closed loop, not relying on manual operation, small error and high testing precision.
Owner:ASTRIBOT CO LTD
A pull-out force tester
The utility model discloses a kind of pull-out force testers, it is related to pull-out force test technical field, including base;Two bracing bars are fixedly installed on base;Bracing bar top is fixedly installed with top plate;Between top plate and base, screw rod is movably installed;One end of screw rod is fixedly installed with driving motor;Lifting plate is movably installed on screw rod;One end of lifting plate is fixedly installed with U-shaped frame;U-shaped frame bottom is fixedly installed with tensioner;The tensioner is electrically connected with tester by data line;The tester is fixedly installed with fixed frame;The bottom of fixed frame is fixedly installed with base;In carrying out pull-out force test, driving motor moves upwards by screw rod and the tensioner of U-shaped frame bottom installation lifting plate, effectively detect the pull-out force of fixed fiber, when fiber is pulled out, the tension exerted on tensioner is transmitted to tester by data line, to ensure the accuracy of detection value.
Owner:XINFULE (GUANGZHOU) TECH CO LTD
Anti-pull-out wheel
The utility model relates to maintenance tool technical field discloses a kind of anti-pulling wheel devices, including nut, with the screw rod being connected in nut through thread, at least two support arms being arranged around nut along circumferential direction and the draw hook being arranged on each support arm, pull rod is equipped between the draw hook and screw rod, second pin is inserted on the support arm, the side of draw hook upper portion close to screw rod is rested on second pin, one end of pull rod is hinged with the middle part of draw hook, other end is hinged with the part between second pin and nut of support arm.In work, pull rod pulls draw hook, and simultaneously, because the outer circle of draw hook upper portion is rested on second pin, according to lever principle, the pulling force of pull rod acting on draw hook will exert clamping force towards screw rod axis to the hook tip of draw hook bottom, so as to clamp the component to be disassembled, prevent the hook tip from loosening from pulley, and then cause the disassembly failure of the component to be disassembled.
Owner:王同义
Pull rod type inner framework filter element structure
The utility model discloses a pull rod type inner framework filter element structure which comprises a framework and a frameless filter element sleeved outside the framework, a first cover body and a second cover body are respectively covered at two ends of the framework and the frameless filter element, and a plurality of pull rods are detachably connected between the first cover body and the second cover body. The ends, away from each other, of the first cover body and the second cover body are fixedly connected with a first sealing gasket and a second sealing gasket correspondingly. One end of the second cover body away from the first cover body is connected with a handle. According to the framework-free filter element, the first cover body and the second cover body can be subjected to the tension action of the plurality of pull rods, and the framework-free filter element is limited on the framework, so that the framework is added under the condition of not changing the structure of the filter material lamination on the standard framework-free filter element, and the filter material lamination does not need to be additionally processed, and therefore, the universality of the framework-free filter element is improved.
Owner:CRUN INTELLIGENCE
Energy Guide Chain with a Pull Rope Detector Arrangement
The invention relates to an energy guide chain (4) with an arrangement for monitoring the energy guide chain including a detector (40) with the pull rope (22). The monitoring arrangement includes a flexible outer sheath (20) rigid in compression in a pull direction, in which at least one longitudinal portion of the pull rope (22) is guided. The outer sheath (20) with the longitudinal portion of the pull rope (22) extending therein are guided by the energy guide chain (4). According to at least one embodiment, the detector (40) is configured to identify relative motion of the pull rope (22) relative to the outer sheath (20).
Owner:IGUS SE & CO KG
Dual arm pull down machine (pneumatic clamp)
1. Name of the design product: Double-arm tension testing machine (pneumatic clamp). 2. Use of the design product: The design product is used for tension testing machine for tension test. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: Design 1 perspective view. 5. Design 1 is designated as the basic design.
Owner:XIAMEN LUGONG INTELLIGENT MANUFACTURING INSTRUMENT CO LTD
Geological exploration cable with antiskid and tensile functions
The utility model discloses a geological exploration cable with antiskid and tensile functions, which comprises a cable assembly, and a fixing assembly convenient to assemble and disassemble is arranged on the outer side of the cable assembly. The cable assembly comprises a keel, an inner sheath is fixedly installed on the outer side of the keel, a plurality of sets of cable bodies are evenly placed in a gap between the keel and the inner sheath, and an armored metal belt is arranged on the outer side of the inner sheath. The friction force in the cable traction process is increased, the anti-skid effect of the cable is achieved, anti-skid threads can reduce the abrasion of the cable, the effect of reducing the traction pulling force borne by the cable body is achieved through the arrangement of the keel and the inner sheath in the center of the interior, and the armored metal belt and the tensile steel wire arranged in the middle layer are matched. The overall tensile strength of the cable assembly is further improved, so that the anti-skid and anti-traction efficiency of the cable is improved.
Owner:JIANGSU GUONING CABLE CO LTD
Multifunctional dragging head for novel repair technology construction of submarine pipeline
The invention discloses a submarine pipeline novel repair technology construction multifunctional dragging head which comprises a shell, a pull rod and a tension sensor, the shell comprises a first shell body, a second shell body, a third shell body and an inner shell body, the two ends of the second shell body are connected with the first shell body and the third shell body respectively, the inner shell body is arranged in the first shell body, the inner shell body is in a hemispherical shape, and the pull rod is arranged in the inner shell body. An inner cavity of the first shell is in a hemisphere shape matched with the inner shell, the inner shell can slide in a hemisphere shape relative to the first shell, the first shell and the inner shell are provided with through holes corresponding to the pull rod, the pull rod stretches into the inner shell through the through holes and is rotationally connected with the inner shell, a tension sensor is arranged in the second shell, and the third shell is connected with the tension sensor. According to the invention, in offshore construction and simulation test scenes, the multi-elbow complex-path subsea pipeline can be adapted, in-pipe visual detection and dragging tension data acquisition are synchronously realized, and support is provided for operation safety assessment, process optimization and fault pre-judgment.
Owner:CNOOC ENERGY DEV EQUIP TECH +1
Anti-pulling automobile waterproof wire harness
ActiveCN223436354UClimate change adaptationInsulated cablesStructural engineeringMechanical engineering
Owner:宜兴市星宇汽车附件有限公司
Telescopic sleeve and flexible member conveying device
The utility model relates to a telescopic sleeve and a flexible component conveying device, the telescopic sleeve can stretch out and draw back with small push-pull force, and radial adjacent pipe fittings can be prevented from being separated from each other. The telescopic sleeve is provided with a near end and a far end and comprises a plurality of pipe fittings which are sequentially and coaxially arranged in a sleeved mode, the pipe fitting on the radial inner side can protrude towards the far end relative to the pipe fitting on the radial outer side so that the telescopic sleeve can be in an extension state, and the pipe fitting on the radial inner side can retract towards the near end so that the telescopic sleeve can be in a contraction state. A channel is formed in the radial center of the multiple pipe fittings for the flexible component to penetrate in the axial direction, a near-end concave rib and a near-end convex rib are formed on the outer surface of the near-end side of any one of the multiple pipe fittings, a far-end concave rib is formed on the outer surface of the far-end side of any one of the multiple pipe fittings, and / or a closing opening is formed in the end of the far-end side of any one of the multiple pipe fittings. The near-end concave rib can abut against the end face of the near-end side of the pipe fitting adjacent to the radial inner side when the telescopic sleeve shrinks, the near-end convex rib can abut against the far-end concave rib of the pipe fitting adjacent to the outer side when the telescopic sleeve stretches, and the far-end concave rib and the closing opening support the pipe fitting adjacent to the inner side.
Owner:PRECISON ROBOTICS (HONG KONG) LIMITED
Method for separating a relief object from a flexible support and automated device enabling the implementation of the separation method.
PendingFR3159923A1Programme-controlled manipulatorGripping headsMechanical engineeringPatent application
The invention relates to a method for separating a relief object from a flexible support and to an automated device for implementing the separation method. The separation method implements the following steps: - positioning a flexible support (10) against a movable element; - a step of holding a relief object (46) stuck to the flexible support, by gripping means; then - a step of detaching the flexible support (10) from the relief object (46), simultaneously implementing: - a movement of the movable element, relative to the gripping means, until the relief object (46) crosses a separation edge (14) of the movable element; and - a tensile force on the flexible support (10) so as to hold the flexible support (10) against the separation edge (14) of the movable element. Figure selected to appear on the first page of the patent application: Figure 6
Owner:CERA-MECA
Cable fixing mechanism and operating handle
The invention belongs to the technical field of endoscopes, and discloses a cable fixing mechanism and an operating handle. The cable fixing mechanism comprises a guide piece, a fixing assembly and an elastic sealing piece. When the cable is pulled, the pulling force acts on the elastic sealing element firstly, the elastic sealing element can deform along with the elastic sealing element to convert concentrated pulling force into dispersed deformation stress, and the pulling force is prevented from acting on a single position in a concentrated mode. And meanwhile, the relative positions of the cable and the guide channel are locked by the fixing assembly, so that the cable is fixed at two positions, and the cable can be effectively prevented from being fixed to be invalid. Besides, the inlet of the guide channel is fixed with the cable in a sealing manner, and the follow-up deformation of the elastic sealing element does not damage the sealing structure of the inlet of the guide channel and the cable, that is, even if the cable is subjected to pulling displacement, the elastic sealing element adapts to displacement change through self deformation and always keeps tight fit sealing with the cable, so that the service life of the cable is prolonged. Therefore, the anti-pulling and high-grade waterproof sealing requirements are met at the same time.
Owner:SUZHOU WECHE MEDICAL TECHNOLOGY CO LTD
Crimping wire pulling-out force detection device
The utility model discloses a crimping wire pulling-out force detection device. The crimping wire pulling-out force detection device is mainly composed of a bottom plate, a tension sensor fixing plate, a driver, a tension sensor, a sliding table module, a transmitter, a stepping motor, a case, a PLC and the like. The machine case, the bottom plate installed on the machine case, the driver arranged in the machine case, the transmitter, the PLC, the display screen and the starting switch are installed on the machine case. The sliding table module is mounted on the bottom plate, and the stepping motor is arranged on the sliding table module. The tension sensor fixing plate and the tension sensor fixing plate are mounted on the bottom plate, and the tension sensor is arranged on the tension sensor fixing plate. The utility model provides a crimping wire pulling-out force detection device. The crimping wire pulling-out force detection device has the advantages of ensuring uniform pulling-out speed, automatically acquiring data, being high in reliability, convenient to operate and the like.
Owner:ZHENGZHOU ASTRONAUTIC ELECTRONICS TECH
Method and device for testing tensile properties of a spring rod
ActiveCN119534095BMaterial strength using tensile/compressive forcesClassical mechanicsStructural engineering
The application discloses a spring pull rod tensile property testing method and device, which comprises the following steps: installing a tensile property testing device on an upper connecting head of a tension testing machine and fixing the same by using a pin; connecting upper and lower end heads of the spring pull rod in the tensile property testing device and fixing the same by using a pin; setting a program, and the testing machine is stretched upwards to detect a load value under a fixed elongation; the spring pull rod tensile property testing special device comprises an upper connecting device and a lower connecting device; the friction force of a nut and a connecting head of the testing machine can be increased by rotating and tightening the nut, the device and the connecting head of the testing machine can be tightly combined without loosening, and the accuracy of test data is ensured. The method is simple and easy to implement, the test device can reduce the influence on the measurement result, and the installation operation is simple.
Owner:SHAANXI AIRCRAFT CORPORATION
A pull-off valve flow test apparatus
ActiveCN120927279BMachine valve testingVolume/mass flow by mechanical effectsStream flowDirect observation
The application relates to the technical field of pull-off valve flow detection, and discloses a pull-off valve flow test equipment, which comprises a test water tank, a colorant mixing mechanism arranged on one side of the test water tank, a pulling force test mechanism arranged on the other side of the test water tank, a flow test mechanism arranged in the test water tank, observation windows symmetrically arranged on the inner walls of the two sides of the test water tank, and a liquid level meter arranged on the inner wall of one side of the test water tank. The pull-off valve flow test equipment keeps the water in the test water tank in a state of submerging the flow test mechanism, the colorant mixing mechanism dyes the water in the pull-off valve body, the pulling force test mechanism applies pulling force to the pull-off valve body, and the change of the flow loss of the pull-off valve body under different pulling force states can be more directly observed when the pull-off valve is pulled off; the observation windows can directly observe the color amount; the liquid level meter can measure the change of the liquid level of the added dyed liquid, and then the flow data can be measured and collected.
Owner:NANTONG SKOMA MECHANICAL & ELECTRICAL EQUIPMENT CO LTD
Linear tension test device
ActiveCN223538669UMaterial strength using tensile/compressive forcesClassical mechanicsTest platform
The utility model discloses a linear tension test device which comprises a tension transmission assembly, a force application assembly and a power assembly which are sequentially arranged on a test bed, the tension transmission assembly comprises a slidable guide seat arranged on the test bed, and a connecting rod is arranged on the guide seat; the force application assembly comprises at least two elastic force application cylinders, each elastic force application cylinder comprises a sleeve, an abutting ring is arranged at one end of each sleeve, two force application lug plates are arranged at the other end of each sleeve, and a pull rod is embedded in each sleeve; one end of the pull rod penetrates through the abutting ring and is provided with a pull ring, the other end of the pull rod is provided with a lock rod, and a spring is nested on the pull rod; the force application lug plate of the elastic force application cylinder on the front side is movably connected with the pull rod of the elastic force application cylinder on the rear side through a pin shaft I, the pull rod of the elastic force application cylinder on the foremost side is movably connected with the connecting rod, and the force application lug plate of the elastic force application cylinder on the rearmost side is movably connected with the power assembly; the device has the advantages of small test error, simple structure, flexibility and convenience in use, high adaptability and the like.
Owner:XINXIANG XINBEIZENG AUTOMATIC EQUIP CO LTD
Non-circular electrical cable having a reduced pulling force
ActiveUS12431266B1Apparatus for feeding conductors/cablesFlat/ribbon cablesNylon materialElectrical conductor
In various embodiments, a non-circular electrical cable having a reduced pulling force attributable to the exterior surface of an outer sheath, and method of producing the same is provided. In various embodiments, an outer sheath of the cable may comprise a first and second sheath layer, the second sheath layer being located external to the first sheath layer, and comprising a nylon material configured to reduce the pulling force necessary for installing the cable. In various embodiments, the first sheath layer may be extruded using a tube extrusion method into a substantially circular shape, and the second sheath layer may be extruded using a pressure extrusion methods onto the exterior surface of the first sheath layer while maintaining the at least substantially circular shape of the sheath. The sheath may then be pulled onto the surface of a plurality of conductors to form the non-circular electrical cable.
Owner:SOUTHWIRE CO LLC
A shear-resistant retractable anchor rod
The present invention discloses a shear-resistant retractable anchor rod, which relates to the technical field of anchor rods. The anchor rod comprises an anchor rod head, a retractable rod and an end link that are rotatably connected in sequence. The retractable rod is a structure that can be extended after being subjected to tension, and the rotation centers of the retractable rod and the end link are both perpendicular to their own axes. Therefore, when the surrounding rock deformation produces a large shear force, relative rotation can be generated between the anchor rod head, the retractable rod and the end link to offset the influence of this shear force. When the surrounding rock deformation produces a large pulling force, the retractable rod can also adapt and extend to offset the influence of this pulling force, thereby effectively solving the problem that existing anchor rods cannot effectively prevent shear and tensile damage.
Owner:SUN YAT SEN UNIV
Elevator push-pull force detection device
The utility model provides an elevator push-pull force detection device, and relates to the technical field of elevator detection, the elevator push-pull force detection device comprises a base, the upper surface of the base is provided with a driving assembly, the upper surface of the base is provided with two moving plates through the driving assembly, and the front surfaces of the two moving plates are provided with guide grooves; two guide grooves are formed in the two second sliding plates, guide plates are installed in the two guide grooves in a sliding mode, push-pull force detectors are installed on the surfaces of the two guide plates, and a positioning adjusting assembly for positioning the guide plates is arranged on the movable plate. When the push-pull force detector is used, the two second sliding plates move towards the surfaces close to each other, the positioning columns can be separated from the interiors of the positioning holes, the two first sliding plates can slide, the moving plate is driven to move at the same time, and the push-pull force detector is moved to a proper height for detection. The device can detect the elevator door at different heights.
Owner:CHIZHOU SPECIAL EQUIP SUPERVISION & INSPECTION CENT
Parameter reduction pull-in control method
ActiveCN114638066BGeometric CADDesign optimisation/simulationMultivariable optimizationGenetics algorithms
The application discloses a few-parameter pull-frame control method, and establishes a multivariable optimization relation of a pull-frame tension F, a comprehensive resistance f of a hydraulic support and a pull-frame tension duration t1 according to a dynamics principle; and an optimal solution of the multivariable optimization relation is obtained by using a genetic algorithm. The application has the advantages that for the purpose of engineering application, the pull-frame process of the hydraulic support is simplified into two processes of pull-frame and free movement, the time required for the pull-frame tension is estimated by using the genetic algorithm before the pull-frame, so that the disadvantages of segmented pull-frame and real-time adjustment are avoided, the pull-frame control precision of the hydraulic support group is improved, the straightness of the hydraulic support group is ensured, the coal wall spalling, the hydraulic support being pressed to death, the roof falling and other accidents caused by the insufficient straightness of the hydraulic support group are fundamentally avoided, the low coal output efficiency problem is solved, and the production safety of the coal mine working face and the coal mine production benefit are ensured.
Owner:ZHENGZHOU HENGDA INTELLIGENT CONTROL TECHNOLOGY CO LTD