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466 results about "Pull off force" patented technology
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Insertion device
Endoscope has vertical bending operation wires transmitting a pulling force to a bending portion of an insertion portion, a vertical bending pulley having pulley grooves on an outer circumference, and wire guides in a partial region in a circumference direction of each pulley groove and guiding the vertical bending operation wires to be wound in the respective pulley grooves. The pulleys rotate within a 180-degree angular range, and a width of a bottom portion of each pulley groove allows each wire to be wound for at most two revolutions. The width of the bottom portion of the pulley groove is narrowed down with each wire guide so that each wire is wound only one revolution in a rotation axis direction of each pulley, and a tapered shape of each wire guide guides the wire to be wound in the partial region to the bottom portion of each pulley groove.
Owner:OLYMPUS MEDICAL SYST CORP
Drawing faucet
The invention provides a drawing faucet. The drawing faucet comprises a drawing pipe, a guide pipe and a positioning piece rotationally arranged on the drawing pipe. Through arrangement of the track guide groove in the inner wall of the guide pipe and the positioning point, the positioning piece moves upwards along the track guide groove when the drawing pipe is drawn out, and can suspend on the nearest positioning point when the drawing pipe retreats, so that the drawing pipe does not continue to retreat; and when the drawing pipe is drawn out again, the drawing pipe can move upwards again along the track guide groove, and the drawing pipe can return to the initial position, so that the drawing pipe can be suspended at a certain position when being drawn out, a user does not need to continuously apply pulling force to the drawing pipe in the drawing pipe using process, and the situation that the arm of the user is tired due to long-time use is avoided.
Owner:GUANGDONG WEIXIANG SANITARY WARE
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
Pet toy
A device for containment and release of items therein, such as a device configured for engagement with one or more pets, such as dogs. The disclosure also relates to methods of using the device to release items for the entertainment and engagement of pet(s). In one embodiment, a device for containing and releasing items therein comprises: a body defining an inner chamber and at least one closable opening; and a pull element attached to the body, the pull element being configured to open the opening of the body when a pull force is exerted on the pull element.
Owner:KABOOM WORLDWIDE LLC
Pull-end attachment structure
PendingUS20250004237A1Optical fibre/cable installationFibre mechanical structuresElectric cablesPull off force
A pull-end attachment structure includes a cable having an optical fiber, a cylindrical dam case and fixed to the cable so as to surround the cable, a cylindrical member to which a pull-hose configured to accommodate an end portion of the optical fiber is attached and which is provided so as to surround an outer circumferential surface of the dam case, and a cylindrical fixing member provided so as to surround the cable and capable of fixing to the cylindrical member, in which an outer diameter of the fixing member is equal to or less than an outer diameter of the cylindrical member, and a contacting surface is formed on an inner circumferential surface of the fixing member, the contacting surface that contacts the dam case and transfers a pulling force to the dam case when the cylindrical member and the fixing member are pulled through the pull-hose.
Owner:FUJIKURA 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
Product compression rebound test device
ActiveCN120369462AMaterial strength using tensile/compressive forcesClassical mechanicsStructural engineering
The invention relates to the technical field of product performance testing, in particular to a product compression springback testing device which comprises a rack, a test bed is arranged on the rack, a pressure sensor is arranged on the test bed, a bearing block is arranged on the pressure sensor, stand columns are arranged on the test bed and located on the two sides of the bearing block, and the stand columns are arranged on the rack. A stand column is arranged on the rack, a cross beam is arranged on the stand column in a sliding mode, a lower pressing head is arranged on the bottom face of the cross beam, a displacement sensor is arranged on the cross beam and the test bed together, an upward pulling assembly used for applying upward pulling force to the cross beam is arranged on the stand column, and a downward pulling assembly used for applying downward pulling force to the cross beam is arranged in the rack. A jacking and supporting mechanism used for jacking and supporting the pull-down assembly is further arranged in the rack. According to the application, the test precision of the compression resilience performance of the gasket can be improved, so that the accuracy of the test result of the compression resilience performance of the gasket can be improved.
Owner:ZHANGJIAGANGTIANLE RUBBER & PLASTIC TECH CO LTD
Multi-stage control negative Poisson self-expanding anchor apparatus
The present disclosure is related to a multi-stage control negative Poisson self-expanding anchor apparatus. The apparatus is constructed to solve the problem of poor effect or even failure of anchor bolts owing to insufficient force area of the bolt and easy damage of the locking section under the action of large tension in the existing technology. The anchorage section mainly comprises a plurality of circular platform bodies spaced with larger outward and smaller inward along the axial direction. The axial inner segment of the round platform body is coaxial connected with the force resistant body, and the axial outer segment of the round platform body is opened with an axial inward through the hole of the force resistant body. The axial inner part of the force resistant body is fixed on the anchorage segment.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
Anchor rod drawing force testing device
InactiveCN119290597Aimprove integrityimprove accuracyMaterial strength using tensile/compressive forcesClassical mechanicsStructural engineering
The invention relates to the technical field of anchor rod tensile capacity testing, in particular to an anchor rod drawing force testing device which is characterized in that a stretching mechanism and a lower clamping mechanism are arranged on an operation table, an upper clamping mechanism is arranged above the lower clamping mechanism, and a positioning mechanism is arranged on the upper clamping mechanism; through cooperation of the stretching mechanism and the positioning mechanism, axial testing tension can be applied to the pipe seam type anchor rod, and eccentric oblique tension at different angles can also be applied to the pipe seam type anchor rod; according to the invention, the tensile mechanism is matched with the lower clamping mechanism and the upper clamping mechanism, so that tensile performance tests in different force application directions can be simultaneously carried out on a plurality of pipe seam type anchor rods through a single driving source in the same test equipment; through cooperation of the lower clamping mechanism and the upper clamping mechanism, the pipe seam type anchor rods with different diameters can be accurately clamped and positioned, and the problem that the tensile property of the pipe seam type anchor rods is affected due to clamping deformation can be solved.
Owner:ANQING COPPER MINE OF TONGLING NONFERROUS METALS GRP CO LTD +2
Fatigue test equipment and method for riveting tool
The invention discloses fatigue test equipment and method for a riveting tool. Comprising a damping load system used for providing a load and used for simulating the stress condition during riveting of a snap rivet, the instant condition of snap of the snap rivet is simulated through the instant release effect of magnetic attraction force generated by an electromagnet, the whole tension system is monitored in real time through a pressure sensor, and the electromagnet can test the tensile force of the snap rivet according to test requirements. The electromagnets with different magnetic attraction forces are selected, when simulation starts, the damping load system is compressed successively along with increase of riveting force, and when the tension detected by the pressure sensor reaches the test requirement, the control system controls the electromagnet system to lose power, and the magnetic attraction forces generated by the electromagnets are released instantly. Therefore, the stress condition of the snapping type rivet during riveting can be simulated. According to the method, the stress condition during riveting of the snapping type rivet can be simulated, more importantly, impact vibration at the snapping moment can be simulated, and the problem that an existing snapping type riveting tool cannot be subjected to fatigue testing is solved.
Owner:MEISHAN CRRC FASTENING SYST CO LTD
Push-pull force equipment
ActiveCN222188989UTest tensile strengthReduced risk of warpingMaterial strength using tensile/compressive forcesStructural engineeringMechanical engineering
The utility model discloses push-pull force equipment which comprises a base, a carrier plate, a carrier and a pressing plate, the carrier plate is arranged on one side of the base in the thickness direction, a groove is formed in the carrier plate, and the groove is suitable for placing a frame and a substrate of a power chip; the carrier is connected with the base, the carrier is located on the side, away from the base, of the carrier plate, and the carrier can be switched between an ascending position and a descending position relative to the carrier plate; the pressing plate is connected with the carrier, the pressing plate is located between the carrier and the carrier plate, the pressing plate comprises a body and at least one extending part which are connected with each other, and the extending part extends in the direction towards the carrier; when the carrier is located at the rising position, the pressing plate is suitable for being separated from the frame and the substrate; when the carrier is located at the descending position, the body is suitable for abutting against the frame, and the extending part is suitable for abutting against the substrate. According to the push-pull force equipment provided by the utility model, the risk of warping of the frame and the substrate can be reduced, so that the tensile strength of the aluminum wire can be accurately detected, and the measurement precision can be further improved.
Owner:HISENSE HOME APPLIANCES GRP CO LTD
Wall reinforcing and connecting device
ActiveCN222557848UImprove practicalityBuilding repairsArchitectural engineeringStructural engineering
The utility model discloses a wall reinforcing and connecting device, and relates to the technical field of fabricated buildings. The assembly type building wall comprises a first assembly type building wall body, a second assembly type building wall body and a reinforcing connecting mechanism, the first assembly type building wall body is fixedly connected with the second assembly type building wall body through assembly connecting pieces, and the reinforcing connecting mechanism is fixedly installed at the break angle position of the first assembly type building wall body and the second assembly type building wall body. The supporting groove and the tension groove are formed in the stress plate set and matched with the limiting pin to fix and limit the supporting pull rod, it is guaranteed that the supporting pull rod can provide supporting force or tension, meanwhile, the supporting pull rod can be directly detached and replaced when the supporting pull rod deforms or needs to be replaced, and the supporting pull rod can be conveniently replaced. The situation that the whole device cannot be normally used due to the fact that the supporting pull rod cannot be directly replaced is avoided, and the practicability of the device is greatly improved.
Owner:SHANDONG BOYUAN ARCHITECTURAL DESIGN
Gripping device
2. Gripping device comprising at least a multi-segment gripping jaw (10, 12) which is movably articulated to a support device (14) and with a drive device (16) for moving the respective gripping jaw (10, 12) relative to the support device (14), characterized in that the respective gripping jaw (10, 12) has a movable gripping structure (18) with an outer structure (20) for receiving compressive forces and with an inner structure (22) for receiving tensile forces, which is adjacent to a gripping space (24) and that individual coupling elements (26) are provided, which are each movably articulated to the inner (22) and outer structure (20), which terminate in a common base (28) of a predefinable length, which is pivotably mounted on a pivot axis (30) on the support device (14).
Owner:CARL STAHL GMBH & CO KG
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
Power semiconductor manufacturing method
PendingCN119230428AImprove stabilityImprove reliabilitySemiconductor/solid-state device testing/measurementSemiconductor/solid-state device manufacturingElectrical connectionLead frame
The invention relates to the technical field of semiconductors, in particular to a power semiconductor manufacturing method, which comprises the following steps of: S100, bonding a pin frame on a DBC (Direct Bonding Copper) board by utilizing ultrasonic energy of an ultrasonic terminal bonding machine; a plurality of pins are arranged on the pin frame; s200, carrying out a push-pull force test on the DBC board; s300, carrying out static electricity removal and purging treatment on the DBC board; s400, mounting a plurality of chips on the DBC board, and bonding metal wires between the DBC board and the chips and between the chips to form electric connection between the DBC board and the chips and electric connection between the chips; s500, performing glue pouring treatment on the chip and the metal wire on the DBC board, and performing curing treatment on the DBC board; and S600, performing rib cutting treatment on the DBC board. By adopting the scheme, the influence of thermal stress generated by high temperature during chip welding on the pin bonding area can be avoided, and the product power pin bonding yield is improved.
Owner:CHONGQING YUNTONG CAR CORE ELECTRONIC TECH 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
Force value protection member and ablation handle
ActiveCN119423961Aincrease flexibilityimprove securitySurgical instruments for heatingForce generationDormia basket
The invention provides a force value protection component and an ablation handle, and relates to the field of force value protection. The force value protection component comprises a force conduction part, a limiting part and a pulling force generation part. The force conduction part is fixedly connected with the limiting part; the limiting part is in contact with the tension generation part; the force conduction part is configured to conduct the tension to the protected object and conduct the counter-acting force of the tension to the limiting part; and the limiting part is configured to limit the displacement of the force conduction part, so that the protected object is not subjected to the pulling force any more under the condition that the preset external force value is reached. By using the force value protection component provided by the embodiment of the invention, the target object can be protected in time when the external force borne by the target object reaches the preset external force value, and the target object is prevented from being further damaged by the external force. When the force value protection component provided by the invention is applied to the ablation handle, excessive expansion of the net basket caused by misoperation can be effectively prevented, so that the risk of vascular injury is reduced.
Owner:SHANGHAI GOLDEN LEAF MED TEC CO LTD
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
Counter-pull type prestress detector for water conservancy project
ActiveCN222784413UMaterial strength using tensile/compressive forcesPilot holeStructural engineering
The utility model relates to the technical field of prestress detection, in particular to a counter-pull type prestress detector for hydraulic engineering, which comprises a detection table, a lower clamping group and a detection host arranged on the detection table, a display screen and a signal line arranged on the detection host, a support column arranged on the detection table, and a top plate arranged on the support column. An oil cylinder and a first guide hole are formed in the top plate, a prestressed tendon body is clamped on the lower clamping group, a guide rod is connected in the first guide hole in a sliding mode, a movable plate is arranged on the guide rod, an upper clamping group is arranged on the movable plate, a tension sensor is arranged between the lower clamping group and the upper clamping group, and a guide sliding block and a reinforcing rib plate are arranged on the movable plate; the guide sliding block is in sliding connection with the supporting column. The vertical lifting guide stability of the moving plate is integrally improved, then the detection stability of the tensioning prestress of the prestressed tendon is guaranteed, and the structural strength between the moving plate and the telescopic rod of the oil cylinder is improved.
Owner:SHUIFA TESTING 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 force arm adjustment mechanism for fitness equipment and use method thereof
The present invention relates to a force arm adjustment mechanism for fitness equipment and a method for using the mechanism. The mechanism comprises a frame, an operating frame hinged on the frame, and a swing frame hinged on the operating frame. The swing frame is equipped with a load, and the operating frame is provided with an operating part. The mechanism also comprises a pull rod, one end of the pull rod is hinged to the swing frame, and the other end of the pull rod is hinged to the frame. By setting the pull rod, when the operating frame rotates, the swing frame rotates a certain angle relative to the operating frame, thereby changing the force arm length of the load relative to the hinge point of the frame and the operating frame; by changing the force arm length of the load, the magnitude of the push-pull force in the push-pull stroke is changed, so that different exercise effects can be achieved for different exercise movements. The mechanism can be applicable to a variety of fitness equipment, has a simple structure, and is very suitable for various professional fitness equipment.
Owner:SHANDONG LI DE FITNESS CO LTD
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
Method for Detecting the Environment Inside a Hole
The present invention discloses a method for detecting the internal environment of a hole, which includes: detecting the pulling force value in real time during the wire laying process. Since the resistance when entering the water is less than the resistance of collision and reaching the bottom, when the pulling force value suddenly decreases to the first pulling force value, that is, the pulling force value suddenly decreases and the stabilized pulling force value is greater than the bottom-reaching pulling force threshold and the collision pulling force threshold, it can be confirmed that the detection pendant has entered the water. After entering the water, based on the water entry situation, that is, based on the host computer calculating the pulling force difference between the first pulling force value and the pulling force value before the mutation, the wire laying speed is recalculated to obtain the wire laying speed in water, preventing the wire laying speed in water from being too fast, which may cause wire entanglement or false triggering of collision detection or bottom-reaching detection, thereby improving the accuracy of hole detection, improving the accuracy of placing explosives, and enhancing the blasting effect.
Owner:BEIJING ZHONGKUANGHUAWO TECH
Hydraulic direct loading type UHPC (Ultra High Performance Concrete) anti-drawing test device
The invention relates to a hydraulic direct loading type UHPC (Ultra High Performance Concrete) anti-drawing test device, which effectively solves the problems that a drawing test device is easy to cause local damage of a sample, the rigidity of the device is poor, and the tension is easy to be eccentric. According to the technical scheme, the device comprises a sample, a cylinder body and connecting structures located at the two ends of the cylinder body, the cylinder body is a cylinder with two open ends, oil holes are formed in the side wall of the cylinder body, the sample is of a dumbbell-shaped structure with two thick ends and a thin middle, the sample is coaxially arranged in the cylinder body, and the two ends of the sample are matched with the cylinder body through the connecting structures. The connecting structures can realize sealing fit between the inner wall of the cylinder body and the outer wall of the sample, the connecting structures and the sample are relatively fixed, and the connecting mechanism at each end can axially slide outwards relative to the cylinder body; hydraulic oil directly acts on the end part of the sample, uniform distribution of pressure on the bearing surface of the sample and the resultant force direction along the axial direction of the sample can be ensured, local damage of the sample or influence of bending moment or shearing force on the sample on the test is avoided, and the rigidity of the whole device is better.
Owner:ZHENGZHOU UNIV
Nutless bolt
A nutless bolt 10 for fastening a wear plate 12 to a structure 14 comprises a body 16 having a shaft 18 and a stop 20 coupled to the shaft 18. Shaft 18 is dimensioned to pass through a hole 22 in structure 14 while stop 20 is configured to stop the body 16 from falling wholly into or through the hole 22, and to engage with the wear surface plate. An axial bore 24 is formed in body 16 and houses locking balls 58 and a rod 28. The body 16 also has radial channels along which the balls 58 can roll. The rod 28 has a tapered portion 70 which increases in outer diameter from a first location L1 to a second location L2. In use the balls 58 are initially at the first location L1 on the rod 28 and partially within respective channels 56. Pulling the rod 28 in an up-hole direction results in the rod 58 moving in a radial outward direction as they roll along the tapered portion 70 to the location L2. The balls now lie partially outside of the of the body 16 locking the bolt 10 in the hole 22. Applying additional pulling force on the rod increases tension in the rod to intentionally cause a controlled break or separation of the rod into a first portion 72 that is withdrawn from the bore and a second portion 62 that remains in the bore and bearing against the balls 58.
Owner:METSO OUTOTEC FINLAND OY
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