46results about How to "To achieve the purpose of the test" patented technology

The invention provides a peripheral reinforcing stiffened plate axial pressure test mechanism, which comprises an upper cover plate (1), a loading structure (2), an upper end clamp (3), a lower end clamp (4), a left vertical rail (6), a right vertical rail (7) and a bottom base (8), wherein the lower ends of the lower end clamp (4), the left vertical rail (6) and the right vertical rail (7) are fixed on the bottom base (8); a stiffened plate test piece (5) is clamped between the left vertical rail (6) and the right vertical rail (7); the upper end of the stiffened plate test piece and the upper end clamp (3) are fastened through a fastening screw bolt; the lower end of the stiffened plate test piece and the lower end clamp (4) are fastened through a fastening screw bolt; the upper side of the upper end clamp (3) is connected with the loading structure (2); through the loading structure (2), the load of loading equipment is loaded on the stiffened plate test piece; the upper ends of the left vertical rail (6) and the right vertical rail (7) are connected with the upper cover plate (1). The test mechanism has the advantages that stability and repeated utilization are realized; the experiment goal is realized; meanwhile, the reasonable authenticity of experimental data can also be ensured.

The invention relates to the related field of airplanes, in particular to a ground verification test method for simulating catapult-assisted take-off impact response during catapult-assisted take-offof an airplane. The ground verification test method for simulating the catapult-assisted take-off impact response during the catapult-assisted take-off of the airplane comprises the steps of selectingone section from an airframe structure as a ground verification test piece and an airframe test section according to a main force transmission path of catapult load of a carrier plane; placing overload sensors and bonding strain sensors on the main force transmission paths and key parts of a landing gear and the airframe structure; arranging laser displacement sensors; fixedly restricting the rear end of the test piece on a force bearing wall; and placing a rubber pad at the wheel center of the landing gear to restrict the vertical downward displacement of the test piece in the load applyingprocess. According to the ground verification test method for simulating the catapult-assisted take-off impact response during the catapult-assisted take-off of the airplane, as the main airframe structures on the front landing gear and the main force transmission paths are used as test pieces, the scale of the test pieces is greatly reduced, and the design and manufacturing cost is reduced. Through coordinated loading of multi-passage oil cylinders, the correctness of the load in the whole catapulting process is guaranteed.

The invention relates to a high-strength stainless steel stranded wire mesh enhanced ECC direct tensile test fixture comprising an upper chuck and a lower chuck, each chuck comprises a chuck body, thechuck body is provided with a curved hole, a connecting rod rotatably penetrates into a hole on the curved top of the curved hole, and the end of the connecting rod is provided with a curved matchingportion for matching with the corresponding curved holes. The present invention also discloses a test method using the fixture for performing a tensile test. The curved matching portion cooperates with the curved hole to realize the function of partial spherical hinge, realizes the function of automatic centering, ensures axial stretching in a tensile process of a test piece, and avoids the problem of eccentricity.

The invention relates to a metal hydrogen embrittlement sensitivity testing system, comprising an independent loading unit, a stainless steel water tank arranged in the independent loading unit, a central heating fluid-flushing station arranged on the side face of the independent loading unit, an electrical control cabinet arranged on the side face of the central heating fluid-flushing station, and a centralized recycle bin arranged on the side face of the electrical control cabinet, wherein the stainless steel water tank is in a trough body shape; the stainless steel water tank is internally provided with a constant temperature environment box; the upper end of the constant temperature environment box is provided with a first temperature sensor; the constant temperature environment box is internally provided with a round bar sample in a penetrating way; a threaded compression sealing element used for sealing is arranged at the connecting part of the round bar sample and the side wall of the constant temperature environment box; another threaded compression sealing element used for sealing is arranged at the connecting part of the round bar sample and the side wall of the stainless steel water tank; anchorage device clamping pieces are also respectively arranged at the two ends of the round bar sample.

The invention discloses a short-circuit apparatus for a handcart type switch cabinet CT current-rising test. The short-circuit apparatus comprises a test clamp, a copper wire lug, two copper wires, acontact plate, a movable joint and a fixed joint; wherein one ends of the two copper wires are aligned and overlapped and fixedly connected with one clamp handle of the test clamp, the copper wire lugis used for tightly pressing the two copper wires, the other end of the first copper wire is connected with the contact plate, the movable joint is arranged on one side of the contact plate, the diameter of the contact plate is equal to the inner diameter of the movable joint, an inner thread is arranged on the inner wall of the movable joint, the other end of the second copper wire is connectedwith the fixed joint, an outer thread is arranged on the outer wall of the fixed joint, the movable joint and the fixed joint are matched and assembled to connect two short-circuit apparatuses. The apparatus is simple in structure, can replace manual wire clamping, and achieves safe, labor-saving and reliable operation. The acceptance, the calibration and the first-aid repair efficiency of the relay protection professional CT is improved. The working intensity and potential safety risk of workers are reduced.

The invention discloses a driving mechanism used on a dragline endurance test platform. The driving mechanism comprises a supporting frame, a turnplate which is connected with the supporting frame in a rotation manner through a first rotor shaft, a mounting hole which is formed in the turnplate and is used for connecting one end part of a drive rod, a motor and a speed reducer for driving the first rotor shaft to rotate, a sliding block fixedly connected with the other end part of the drive rod, a guide rail arranged on the supporting frame, a dragline mounting rack fixedly connected with the sliding block as well as a driving optical shaft arranged on the dragline mounting rack, wherein the mounting hole is deviated from the first rotor shaft, and the sliding block is arranged on the slide guide in a sliding manner; the sliding direction of the sliding block is perpendicular to an axial line direction of the first rotor shaft, the motor drives the turnplate to rotate, and then the drive rod is arranged in the mounting hole of the deviation rotating center; the drive rod can do reciprocating linear motion, and the drive rod drives the sliding block do reciprocating linear motion and further drives the dragline mounting rack to do reciprocating linear motion; therefore, the purpose of a test is achieved, the structure is simple, the use is safe, and a test effect is better.

The invention relates to a multifunctional visual research device for bentonite hydraulic power and air pressure splitting features. The research device comprises a pressurizing space, a data collecting unit and a pressure control unit, wherein the data collecting unit is arranged above the pressurizing space, and the pressure control unit is connected with the pressurizing space. The pressurizing space is defined by a transparent top cover, a sleeve and a transparent base, the transparent top cover and the transparent base are arranged at the two ends of the sleeve in a sleeved mode respectively, the transparent top cover is fixedly connected with the transparent base through a bolt, the data collecting unit is arranged above the transparent top cover, and a connector is arranged on the transparent base and connected with the pressure control unit. Compared with the prior art, the multifunctional visual research device has the advantages of having selectable functions, being high in reliability, visual, low in cost, easy to operate and the like.

The invention discloses a waste tire-soil vertical interface shear characteristic testing device which comprises a sample system, a confining pressure loading system and a servo control system, the sample system comprises an actuating table top cover, an actuating table base and a waste tire horizontally arranged between the actuating table top cover and the actuating table base, the actuating table top cover and the actuating table base are oppositely arranged up and down, and the waste tire is uniformly filled with a soil sample II; the confining pressure loading system comprises an annular shearing box arranged on the radial outer side of the sample system as well as a confining pressure air bag and a soil sample I which are sequentially filled in the annular shearing box from outside to inside in the radial direction, the soil sample I is in contact with the cylindrical side surface of the waste tire, and a horizontal load is provided through the confining pressure air bag; the servo control system is used for adjusting the height position of the sample system and providing a load in the vertical direction, a detachable base plate is arranged in the annular shear box, the sample system is connected with the displacement meter, and the servo control system is connected with the stress sensor. The device is suitable for carrying out shear test on the waste tire-soil vertical interface under the conditions of different burial depths and sizes.

The invention discloses a low-cycle repeated loading test device which comprises a track platform, an inner hinge frame, a connecting piece, a bearing platform, a loading mechanism and a reaction frame, wherein one end of the inner hinge frame is hinged to the lower surface of the bearing platform, the other end of the inner hinge frame is hinged to the track platform, the connecting piece is used for installing the track platform below the bearing platform, and the loading mechanism is fixedly arranged on the reaction frame. The upper surface of the bearing platform is used for placing a test piece, and the loading mechanism abuts against the upper end of the test piece. According to the low-cycle repeated loading test device disclosed by the invention, the test piece is placed on the bearing platform, the bottom of the inner hinge frame slides on the track platform, and the height of the bearing platform is reduced or increased, so that the height of the test piece is reduced to meet the test height requirement, and after the height of the test piece is adjusted, the height position of the bearing platform is fixed; the test conditions can be applied to the test piece through the loading mechanism and the reaction frame, the test piece test purpose is achieved, and adjustment is convenient by changing the connecting position of the inner hinge frame supported below the bearing platform and the track platform.

The invention relates to a rapid decompression test device comprising a thermal vacuum box (1), a container (2), a gas circuit connection system (3), negative pressure gauges (4), a ball valve (5), a vacuum pump (6), a negative pressure sensor (7), a connection hose (8) and a pin puller (9). The rapid decompression test device is characterized in that interior pressure of a test box is decreased to a specified pressure by pumping through the thermal vacuum box (1), the interior pressure of the container is decreased to the specified pressure by pumping through the vacuum pump (6), a piston on the container is unlocked with the pin puller (9) which runs quickly and highly synchronously, and the piston is opened by the interior and exterior pressure difference so as to allow rapid decompression.

The invention discloses a driving mechanism used on a dragline endurance test platform. The driving mechanism comprises a supporting frame, a turnplate which is connected with the supporting frame in a rotation manner through a first rotor shaft, a mounting hole which is formed in the turnplate and is used for connecting one end part of a drive rod, a motor and a speed reducer for driving the first rotor shaft to rotate, a sliding block fixedly connected with the other end part of the drive rod, a guide rail arranged on the supporting frame, a dragline mounting rack fixedly connected with the sliding block as well as a driving optical shaft arranged on the dragline mounting rack, wherein the mounting hole is deviated from the first rotor shaft, and the sliding block is arranged on the slide guide in a sliding manner; the sliding direction of the sliding block is perpendicular to an axial line direction of the first rotor shaft, the motor drives the turnplate to rotate, and then the drive rod is arranged in the mounting hole of the deviation rotating center; the drive rod can do reciprocating linear motion, and the drive rod drives the sliding block do reciprocating linear motion and further drives the dragline mounting rack to do reciprocating linear motion; therefore, the purpose of a test is achieved, the structure is simple, the use is safe, and a test effect is better.

The invention discloses a common mechanical press wet-type clutch universal test tooling. A bearing and an upper cover II are mounted on a support, an upper cover I is mounted on a big support plate, two T-shaped grooves II are formed in a platform, the support is mounted on the platform, and an expansion sleeve and an adjusting sleeve are sequentially mounted on the inner side of the bearing on the support; a big bushing is further mounted on the inner side of the big support plate, and a panel is welded in the contact position of the lower part in front of the big support plate and a flywheel seat; two small support plates are arranged in front of the big support plate, each small support plate is provided with a T-shaped groove I, a motor pulling plate and two motor sliding plates are mounted between the two small support plates, the motor pulling plate and the motor sliding plates are mounted on the small support plates, the motor pulling plate and the motor sliding plates adjacent to the motor pulling plate are connected together through two adjusting screw rods, and a motor is mounted on the two motor sliding plates. According to the invention, tests can be performed on various types of mechanical press wet-type clutches, and the tooling is not needed to be replaced frequently due to different types of the mechanical press wet-type clutches.