73results about How to "Avoid influence of test results" patented technology

The invention provides a comprehensive performance control and test device for new energy automobiles. The device comprises a hollow base. A horizontal plate is fixedly arranged in the base. The frontand rear ends of the top surface of the horizontal plate are respectively provided with a first guide groove. Each first guide groove is internally provided with two first guide blocks. The top end of each first guide block is fixedly provided with a vertical sleeve. A horizontal telescopic plate is arranged above the base. The bottom surfaces of the two sides of the telescopic plate are respectively and fixedly provided with two vertical insertion rods. The two insertion rods, located on the same side of the telescopic plate, are respectively located at the front end and the rear end of thetelescopic plate. According to the invention, batteries different in size can be placed, and the condition that a battery is partially exposed out of the telescopic plate can be avoided. Furthermore,the resonance generated during vibration is prevented and the influence of the resonance on the test is avoided. The test accuracy of the test result is not influenced at all. Meanwhile, a device at the top end of the base is used for vibrating a battery on the telescopic plate in the x-direction, the y-direction and the z-direction. Therefore, the battery is diversified in vibration, so that thetest result is more accurate.

The invention relates to a making method of a soft rock disintegration test sample under joint action of wet-dry alternation and stress. The making method includes steps: (1), determining size of the test sample; (2), making a square die; (3), pre-treating an original rock sample; (4), making cement mortar; (5), wrapping rock with the cement mortar in the die to form a cuboid disintegration test sample; (6), maintaining the sample for 28 days, and demounting the die; (7), after-treating the disintegration test sample; (8), preparing before a disintegration test. When the disintegration test sample is made under the joint action of wet-dry alternation and stress, conventional rock cutting methods cannot process soft rock into regular cuboid samples due to the fact that the soft rock is soft in texture and are low in sample making success rate. Aiming at the problem, the method can make the original sample into a regular cuboid needed for the test and is simple in process, low in cost and high in success rate. The sample made by the method can be used for simulating the soft rock disintegration test under the joint action of wet-dry alternation and stress.

The invention provides a plastic corrugated pipe flexibility automatic detector for a prestressed concrete bridge. The detector comprises a detection pedestal and a movement module; the movement module is arranged on the detection pedestal; the movement module comprises a transverse movement module, a longitudinal movement module, a rotating module and a clamping piece; the transverse movement module and the longitudinal movement module are arranged to be stacked, the rotating module is arranged on any one of the transverse movement module or the longitudinal movement module, and the clampingpiece is arranged on the rotating module; by means of combination of the transverse movement module, the longitudinal movement module and the rotating module, the clamping piece can drive a corrugatedpipe to do left-right bending motion. According to the technical scheme, related provisions of JT / T 529-2016 pre-stressed concrete bridge plastic corrugated pipes can be met, flexible detection is conducted, the structure is simple, and the automation degree is high; the labor intensity of an inspector is relieved, and the batched detection is facilitated.

The invention discloses a test specimen for a direct-current voltage-resistance performance test of fixed insulation materials under the Paschen condition, which comprises an insulation support pipe, wherein an insulation layer to be tested covers the insulation support pipe, a connecting sleeve pipe is sleeved outside the insulation layer to be tested, a flange connecting member is sleeved outside the connecting sleeve pipe, a metal covering belt is arranged outside the insulation layer to be tested between the connecting sleeve pipe and the arc-shaped pipe bottom of the insulation support pipe, a tightly collected clamp sleeve is sleeved outside the metal covering belt, and the lower end of the clamp sleeve is electrically grounded through a spring.