17 results about "Pull off test" patented technology

The invention relates to the field of electronic device drawing test equipment, in particular to drawing test equipment which comprises a carrier plate, a pressing assembly, a pulling assembly and an adjusting assembly. The adjusting assembly comprises a first adjusting air cylinder and a second adjusting air cylinder, the output end of the first adjusting air cylinder is connected with the downward-pressing air cylinder, and the output end of the second adjusting air cylinder is connected with the upward-pulling air cylinder. Through the arrangement of the adjusting assembly, when the part locking position and the pulling force applying position deviate due to the size change of the panel, the first adjusting air cylinder and the second adjusting air cylinder are matched, so that the position change of the part is caused by the size change of the panel; the positions of the downward pressing air cylinder and the upward pulling air cylinder can change according to the size of the panel, so that the position of the downward pressing air cylinder and the position of the upward pulling air cylinder always correspond to the position of a part on the panel, panels of different sizes are adapted, the influence of size change on a test result is reduced, and the accuracy of the test result is improved.

This utility model provides a pull-out testing fixture with a clamping mechanism, relating to the field of pull-out testing technology. It includes a base, with a rectangular seat fixed to the upper end of the base. Clamping blocks are movably mounted on the four inner walls of the rectangular seat. A driving assembly is located at the lower end of the rectangular seat. The driving assembly includes movably mounted connecting rods and connecting rings. The upper end of each connecting rod is integrally formed with the lower end of a clamping block. The four connecting rods are sleeved with the connecting rings. Each connecting rod has a ramp on its outer surface, and the ramp abuts against the inner wall of the connecting ring. This utility model uses an electric telescopic rod to flexibly raise and lower the connecting rings. After the connecting rings move upwards, they slide from the lower end of the ramp to the upper end, causing each connecting rod to simultaneously move towards the axis of the rectangular seat. This allows the connecting rods to drive each clamping block to move synchronously, clamping the material simultaneously, ensuring uniform force on the material, simplifying the operation process, and improving testing efficiency.

The application provides a 20kV cable accessory test detection platform and a detection method, and belongs to the technical field of cable accessory detection. The platform comprises a workbench and a detection mechanism. The detection mechanism comprises a hydraulic oil cylinder fixed on the top of the workbench through a support. The telescopic end of the hydraulic oil cylinder is fixed with a tension sensor. The top of the workbench and the bottom of the tension sensor are both rotationally connected with flat-nose pliers. The application is provided with a guide ring and a magnifying glass. The adjustable guide ring and the embedded magnifying glass on the side plate realize the magnified observation of the crimping position of the wire nose after the pull test. The detection personnel can accurately determine whether the crimping position produces a small crack. The guide ring can move vertically along the side plate to observe the crimping position at different heights. The wire nose can rotate in the horizontal direction to effectively observe the crimping position at different positions in the horizontal direction, thereby greatly improving the detection accuracy of the wire nose pull test.

This utility model provides an automatic pull-out testing device, belonging to the technical field of automatic pull-out testing equipment. It includes a workbench, with a display screen fixedly connected to the rear left side of the top of the workbench. A six-station correction group is fixedly connected to the front left side of the top of the workbench. A station template feeding group is located in front of the station correction group, and station detection and operation indicator lights are located in front of the station template feeding group. This utility model achieves efficient multi-station testing through the cooperation of the dual six-station system, the XYZ three-axis conveying mechanism, and the pull-out testing head group. It can perform multiple testing tasks simultaneously. When station one is testing, station two can be prepared for material feeding simultaneously, significantly shortening the overall testing cycle and greatly improving testing efficiency. Furthermore, the alternating operation mode of the dual stations fully utilizes the equipment's operating time, reducing idle waiting time, and significantly increasing production capacity compared to traditional single-station equipment.

The utility model discloses a top cover test fixture. The top cover test fixture comprises a fixture upper cover and a fixture lower cover which are sequentially arranged from top to bottom, a first area for accommodating a battery cell top cover is arranged in the clamp lower cover; the clamp upper cover and the clamp lower cover are arranged from top to bottom to form a spatial layer, a first area of the clamp lower cover is used for accommodating a battery cell top cover, a second area of the clamp upper cover is used for passing through a pole upper section, and the length and the width of the second area of the clamp upper cover are smaller than those of the battery cell top cover, so that a physical limiting boundary is formed at the edge of the clamp upper cover; the electric core top cover can be fixed and limited during the drawing test, the electric core top cover is ensured not to be influenced by the drawing test to generate displacement and cause test deviation during the test, the test result difference caused by the manual test method is further reduced, and the accuracy and repeatability of the test data are improved. In addition, the top cover test fixture is simple in overall structural design, easy to process and suitable for batch production.

This invention relates to an apparatus and method for measuring the bonding strength of multilayer D2W hybrid bonded chips, belonging to the field of semiconductor packaging technology. It addresses one of the problems of inaccurate and large errors in measuring the bonding strength of multilayer, small, and thin D2W hybrid bonded chips. The method of this invention uses the centripetal force generated during the chip's high-speed rotation to replace the tensile force applied during the pulling process. Since the centripetal force always acts perpendicularly towards the center of rotation, it is always uniformly applied to the bonding interface, avoiding stress concentration. The test is conducted under vacuum conditions, avoiding the influence of air resistance on the test structure's side surface on the uneven distribution of centripetal force under high-speed rotation. Extensive testing revealed that a correction factor α needs to be added to the calculation of bonding strength. This correction factor was obtained through comparison with currently widely accepted pull-out tests and is highly representative.

A method for determining the length of the anchoring and bonding section of a rock bolt to adapt to the disturbance of cyclic tunneling, a test borehole is constructed on the roof; a fixed monitoring device is installed in the test borehole; during the tunneling operation, the fixed monitoring device is used to collect and store vibration signals; a portable acquisition terminal is used to receive and store the vibration signals; an industrial computer is used to receive the vibration signals and analyze and process them to obtain vibration excitation data; an anchoring test piece is made; a low-frequency vibration simulation test system is used to obtain vibration signal data according to the similarity ratio, and the anchoring test piece is subjected to vibration excitation according to the vibration signal data; then, an electro-hydraulic servo mechanics test system is used for pull-out testing; and finally, the loosening damage degree of the anchoring interface corresponding to different bonding lengths of the anchoring test piece is analyzed by comprehensively analyzing the pull-out stress, displacement data and acoustic emission monitoring data during the pull-out test. The method can effectively determine the length of the anchoring and bonding section of the rock bolt to adapt to the disturbance of cyclic tunneling.

The invention relates to the technical field of buckle drawing testing, in particular to a novel nylon buckle matching strength testing device for an anti-falling protection device and a testing method of the novel nylon buckle matching strength testing device. Comprising a test platform, and a protective shell is arranged at the top of the test platform; and a multi-angle stress application mechanism is arranged in the protective shell. Stable pulling force is applied to the buckled nylon buckle through the circulating drawing mechanism, then the multi-angle force applying mechanism is controlled to apply force in different directions to the buckled nylon buckle, and the multi-angle force applying mechanism can simulate working conditions such as high temperature and humidity which are easily encountered by the nylon buckle outdoors. Meanwhile, when the nylon buckle reaches the working limit and is damaged, the cyclic drawing mechanism can be quickly switched to a new nylon buckle, so that temperature strength tests in different environments can be carried out, the situation that the test work lacks continuity due to manual buckle replacement is avoided, and the efficiency of the test work is also improved under the condition that the test precision of the test device is improved.

The application discloses a method for matching the oxide skin state and the shot blasting performance of Q355 grade engineering machinery steel, which comprises the following steps: S1, taking two samples with the same size, measuring the residual area S1 of the oxide skin of the A sample by using a 3D profile measuring instrument, measuring the total measurement area S0, and testing the adhesion F of the B sample by using an adhesion pull tester; S2, cutting a metallographic analysis sample from the A sample, polishing and polishing the cross section, and then corroding the cross section by using 4% nitric acid-alcohol metallographic liquid, observing the cross section morphology by using a metallographic microscope, and measuring the total thickness T of Fe3O4 and FeO; S3, comprehensively analyzing the shot blasting performance of the oxide skin according to the residual area S1 of the oxide skin, the adhesion F and the thickness T of the oxide skin, and selecting a proper shot blasting process according to the analysis result. The method has the advantages that the shot blasting performance of the oxide skin can be quantitatively evaluated, the evaluation result is matched with the shot blasting pellet size, and the shot blasting effect of the oxide skin is greatly improved.

The utility model relates to the technical field of concrete strength testing equipment, and particularly discloses a concrete interlayer strength testing device which comprises a bottom plate and a concrete column, two mounting plates are symmetrically mounted at the top of the bottom plate, and the opposite surfaces of the two mounting plates are connected with limiting cylinders through first electric telescopic rods; connecting holes are formed in the sides, close to the first electric telescopic rods, of the limiting cylinders, and expansion screws are connected to the ends of the concrete columns. The expansion screw is inserted into the drill hole in the end of the concrete column, the end of the concrete column and the limiting cylinder are fixed through the expansion screw, the concrete column is clamped and fixed through the two clamping plates, and the concrete column is clamped and fixed through the clamping plates. The concrete column is doubly fixed, so that the fixing force on the concrete column is ensured, and the concrete column is prevented from being separated due to insufficient fixing force when a drawing test is carried out on the concrete column.

The application discloses a clamp device, a test system and a method for measuring the bonding strength of a coating and a substrate. The clamp device comprises an upper clamp and a flat-bottom cylindrical pin I, wherein the upper clamp is used for clamping a sample to be measured, and the flat-bottom cylindrical pin I is used for bonding and fixing a coating surface of the sample to be measured. The upper clamp comprises a cylindrical pin II, a sliding part, a clamping assembly and a screw assembly. The cylindrical pin II is perpendicularly and threadedly connected with an upper surface of the sliding part. The clamping assembly is slidably fixed on the sliding part through the screw assembly and is used for clamping the sample to be measured. The bonding strength between the coating and the substrate at the relative position of the connecting piece of the material to be measured is tested under the pulling action of a pulling test mechanism. The clamp device and the method provided by the application can reduce test influencing factors, ensure that the force direction is normal during pulling, and improve test precision and repeatability.

This utility model discloses a resin anchor pull-out tester fixture, comprising: a hydraulic cylinder, a sleeve, and an anchor cable lock. The anchor cable lock is installed on the end of the resin anchor to be tested. The sleeve is fitted on the outside of the anchor cable lock. The top of the cylinder of the hydraulic cylinder is mounted on the sleeve. The telescopic shaft of the hydraulic cylinder is connected to the anchor cable lock. The pull-out test of the resin anchor is performed by controlling the extension and retraction of the hydraulic cylinder. The anchor cable lock includes: a lock head, multiple wedge-shaped clips arranged in a ring in the lock head, and a cylinder connector. The cylinder connector is connected to the lock head through a connecting bracket. The lock head has a mounting through hole for installing the wedge-shaped clips. The end of the resin anchor passes through the mounting through hole of the lock head and is fixed in the lock head by the multiple wedge-shaped clips. The cylinder connector is used to connect and fix with the telescopic shaft of the hydraulic cylinder, realizing efficient, accurate, and stable pull-out test of the resin anchor, improving the testing efficiency and accuracy, and enhancing the applicability and reliability of the equipment.

This invention relates to an indoor pull-out testing device and method for expansion anchor bolts based on transparent rock mass, belonging to the field of geotechnical engineering and tunnel support technology. The testing device includes a confining pressure loading system, a transparent chamber, an anchor bolt pull-out system, and a non-contact strain monitoring system. The transparent chamber is filled with transparent rock mass with a matching refractive index, and pre-drilled channels are installed within the rock mass to accommodate the expansion anchor bolts to be tested. During the pull-out process, an industrial camera captures real-time images of the full-domain deformation of the rock mass and anchor bolt through the transparent chamber, and the evolution data of the strain field at the anchoring interface is obtained by combining digital image correlation technology. This invention achieves visualized monitoring of the entire anchoring process of expansion anchor bolts, avoids mechanical interference from anchor bolt expansion on sensors, can simulate complex stress environments, and provides an experimental platform for the study of anchoring mechanisms.

The utility model discloses a drawing test device for a petroleum perforating charge shell, and particularly relates to the technical field of perforating charge shell testing, which comprises a perforating charge shell test board, a pair of guide posts are fixedly connected on the perforating charge shell test board, an abutting disc is fixedly connected on the pair of guide posts, a penetrating groove for a pressing wire on the perforating charge shell to penetrate through is arranged on the abutting disc, and the pressing wire on the perforating charge shell can penetrate through the penetrating groove. A tray used for supporting the perforating charge shell is movably connected to the pair of guide columns, and a first lifting assembly is arranged on the tray and the perforating charge shell test board; a support is fixedly connected to the perforating charge shell test bench, an angle disc is rotationally connected to the support, a second lifting assembly is arranged on the angle disc, and a digital display type tension meter is arranged on the second lifting assembly; according to the utility model, the technical problems of how to optimize the fixing step of the perforating bullet shell and realize the stable drawing of the perforating bullet shell pressing wire, and the test data of the perforating bullet shell pressing wire is not comprehensive enough are solved.

The invention relates to the field of drawing testing, in particular to automatic drawing testing equipment which comprises a base, a first telescopic driving part, a tension sensor and an upper fixing seat. A telescopic driving part I is mounted on the base; a tension sensor is mounted at the driving end of the telescopic driving part I; the detection end of the tension sensor is provided with an upper fixing seat for fixing the interface; a rotating wheel assembly is mounted on the base; a plurality of second telescopic driving pieces are installed on a wheel rotating part of the wheel rotating assembly. The driving end of each second telescopic driving part is provided with a lower fixing base used for fixing a plug, and the lower fixing bases are located below the upper fixing bases. A buffering assembly is connected between each second telescopic driving piece and the corresponding lower fixing base. Through the design of the mounting base and the elastic telescopic rod, elastic buffering can be achieved in the process that the plug is inserted into the interface, and the phenomenon of extra damage caused by hard insertion is avoided.

The invention belongs to the technical field of deformed steel bar quality detection, and particularly relates to a deformed steel bar quality rapid detection device which comprises a control console, a second transverse plate is arranged above the control console, and the second transverse plate and the control console are connected through two drawing mechanisms; each drawing mechanism comprises a hydraulic rod and two guide rods, the hydraulic rods are fixedly mounted at the top of the console, the top ends of the two guide rods are fixedly connected with the second transverse plate, the same first transverse plate is fixedly mounted at the ends of piston rods of the hydraulic rods on the two drawing mechanisms, and a second wedge-shaped stretching clamp is fixedly mounted at the top of the first transverse plate. According to the invention, a torsion test can be carried out on the deformed steel bar workpiece, a drawing test can also be carried out on the deformed steel bar workpiece, a drawing test and a torsion test can also be carried out on the deformed steel bar workpiece at the same time, the integration degree is higher, and parts in the deformed steel bar workpiece cannot be damaged in the process of carrying out the drawing test and the torsion test on the deformed steel bar workpiece at the same time.