9results about How to "Test security" patented technology

The utility model discloses a hammerhead fixing device for an automobile steering knuckle drop hammer test, which relates to the technical field of automobile steering knuckle tests and comprises a base, the top of the base is connected with a top plate through a sliding rod and a support, and a first sliding plate and a second sliding plate are respectively slidably mounted on the sliding rod. A rotating shaft is rotatably mounted between mounting frames fixedly mounted on the front side and the rear side of the first sliding plate, worms are arranged at the two ends of the rotating shaft and are in meshed connection with worm wheels, the worm wheels are fixed to the top of a rotating rod, the rotating rod is rotatably mounted on the first sliding plate, a limiting plate is fixedly mounted at the bottom of the rotating rod, and an electromagnet is mounted at the bottom of the first sliding plate; a mechanical structure composed of the rotating shaft, the worm, the worm gear, the rotating rod, the limiting plate and the like is used for auxiliary fixing. Even if the electromagnet loses magnetic force due to power failure or power system failure, the limiting plate can still limit accidental falling of the impact head from the mechanical level, the double-guarantee effect is achieved, and the risk of accidental falling of the impact head is greatly reduced.

The utility model discloses an A2L hot surface ignition temperature test special device, which comprises a test box and a spraying type pipe arranged in the test box, the surface of one end of the spraying type pipe is fixedly connected with a refrigerant tank with a valve, one side of the refrigerant tank is provided with the valve which is communicated with the interior of the refrigerant tank through the spraying type pipe, and the other side of the refrigerant tank is provided with the spraying type pipe. A glass barrel is arranged on the peripheral side, close to one end, of the spraying type pipe, a metal disc is fixedly installed on the surface of the lower end of the glass barrel, a thermocouple is fixedly installed on the surface of one side of the metal disc, a heat insulation pad is fixedly connected to the peripheral side surface of the metal disc, and one side, extending to the heat insulation pad, of one end of the metal disc is fixedly connected with a heating plate; according to the utility model, through the arrangement of the spraying type pipe, stable conveying and controlled release of the refrigerant can be realized, the refrigerant can be accurately sprayed on the metal disc, and the refrigerant is fully contacted with the hot surface, so that the ignition temperature of the hot surface is tested, and the effect of accurate test result is achieved.

The utility model belongs to electrical detection technical field discloses a kind of insulation resistance rapid testing device, it includes box and handle cap, button switch, banana socket, connector and small brush shape switch installed on it;Handle cap is connected together with small brush shape switch, handle cap is installed to the outside of box, and small brush shape switch is installed to the inside of box;Button switch is installed to the outside of box, for switching small brush shape switch;Banana socket is installed to the outside of box, and it is insulation table needle insertion end;Connector is installed to the outside of box, and is connected with the measured product test end connection.The utility model is connected together by box handle cap, button switch, banana socket, connector and small brush shape switch, connect each terminal by wire according to circuit schematic diagram, after insulation table and measured product are connected with insulation resistance testing device, the test of insulation resistance can be realized quickly, accurately and safely, it is simple and safe to operate, and it can be widely applied to the insulation resistance test of various electrical products.

The multifunctional blade battery testing tool comprises a conductive element, a positive tab, a negative tab, a base plate and a size adjusting device, the base plates are arranged up and down; the two ends of the size adjusting device are fixed to the upper base plate and the lower base plate respectively and used for adjusting the distance between the two base plates. The conductive element is arranged on the base plate and is respectively connected with the positive tab and the negative tab; the conductive element is used for being electrically connected with a positive pole and a negative pole of a blade battery to be tested; and the positive tab and the negative tab are used for being connected with a clip type test line so as to test the electrical performance of the blade battery. According to the tool, the electric performance of the blade battery can be tested safely and conveniently by using the clamp type test line, the risk of welding a tab is avoided, and the tool can adapt to various blade battery cell sizes.

The utility model relates to electronic component testing equipment technical field especially a general diode test seat, including base, upper cover, at least two claw type elastic probe and connecting assembly, the base is along its length direction and is set up through type bearing groove, the both ends of bearing groove length direction are coaxial cylindrical surface end wall, the upper cover is along its length direction and is set up through type cover groove, and the both ends of cover groove length direction are the arc end wall of coaxial with bearing groove end wall, the upper cover is through connecting assembly and covers on the base, makes bearing groove and cover groove position coincidence and forms the restraint cavity of diode middle part limit, claw type elastic probe position corresponds with the restraint cavity position and claw type elastic probe part extends in the outside of base and upper cover, can improve single equipment test containing capacity through the utility model, makes the test efficiency greatly improve.

This application relates to the field of high-temperature environment simulation testing technology, specifically, to a high-temperature performance testing device for large workpieces. The device includes a test chamber, a heating system, a temperature control system, a dehumidification circulation system, a workpiece placement structure, a grooved track, and a control cabinet. The control cabinet is located outside the test chamber; the heating system is located on the inner walls of both sides of the test chamber and connected to the control cabinet; the temperature control system is located inside the test chamber and connected to the control cabinet; the dehumidification circulation system is located on the outer wall of the test chamber and connected to the control cabinet; the grooved track is located on the bottom plate inside the test chamber; and the workpiece placement structure is located in the center of the test chamber and slides on the grooved track via directional wheels. This application can meet the need for simultaneous testing of multiple large workpieces, is suitable for high-temperature performance testing of large workpieces, and features a dehumidification circulation system that efficiently dehumidifies and dissipates heat to maintain a stable testing environment.

The utility model discloses a kind of oil cylinder test tool, including test base, closed ring is equipped with test side wall on the test base, test side wall and the test base between form the oil cylinder clamping groove cavity of notch upwards, cylinder tail clamping fixture fixedly connected on the test base is equipped in oil cylinder clamping groove cavity, cylinder head clamping fixture is slidably connected on test base, cylinder head clamping fixture is made close to or far from the direction of motion of cylinder tail clamping fixture;Linear guide rail is equipped on the test base, the cylinder head clamping fixture includes linear slider slidably connected on linear guide rail, linear slider is equipped with the cylinder head clamping plate extending upwards, first side hole is opened on the cylinder head clamping plate, and first pin shaft is inserted in first side hole and can be pulled out.The test tool has the characteristics of strong speciality, safe and reliable use, overall function is perfect, and practicality is strong.

The utility model relates to the technical field of material testing, in particular to an extension tension testing device for a copper alloy stranded wire, and solves the technical problems that when the stranded wire is clamped and positioned by an existing testing device in the prior art, the end part of the stranded wire can only be clamped and positioned at a single point position, the clamping capability is poor, and the testing efficiency is high. Therefore, the problem that the stranded wire has the risk of falling off in the testing process is solved. The utility model discloses an extension tension testing device for a copper alloy stranded wire. The extension tension testing device comprises a bearing base and two vertical plates arranged at the top of the bearing base, a moving block is arranged on one side of the top of the bearing base and movably connected with the top of the bearing base through a horizontal pushing structure. According to the utility model, the plurality of clamping plates and the adjusting screw rods are arranged, so that the multi-point stable clamping of the copper alloy stranded wire is realized, the risk that the stranded wire falls off in the testing process is effectively avoided, meanwhile, the clamping stability and the testing precision are improved, and reliable guarantee is provided for the quality detection of the copper alloy stranded wire.

This invention relates to an insulation support platform for frequency converters used in withstand voltage testing, belonging to the field of electrical equipment testing technology. The invention includes a platform assembly; a telescopic mounting assembly is connected to the bottom of the platform assembly, the telescopic mounting assembly including a height adjustment mechanism with at least two adjustable levels, allowing the height of the platform assembly to be adjusted in real time via the height adjustment mechanism; an insulating pad assembly is installed between the telescopic mounting assembly and the ground, the insulating pad assembly including an insulating pad body, the surface of the insulating pad body abutting against the telescopic mounting assembly having insulating protrusions, the insulating pad assembly used to block current conduction between the telescopic mounting assembly and the ground; an equipment fixing assembly for fixing the test equipment is detachably connected to the platform assembly; at least one test placement assembly for placing test items is detachably connected to the platform assembly. This invention ensures the safe and reliable conduct of withstand voltage tests.