6 results about "Drop impact" patented technology

The invention relates to the technical field of glass impact resistance testing, and discloses a multidirectional stress glass impact resistance testing device based on hydraulic servo loading, which comprises a rack, a hydraulic push rod is mounted on the rack, a lifting frame is slidably arranged on the rack, the telescopic end of the hydraulic push rod is connected with the lifting frame, and the telescopic end of the hydraulic push rod is connected with the lifting frame. A first glass clamp and a second glass clamp are installed on the machine frame. According to the invention, by integrating two test functions of drop impact and pendulum impact, comprehensive coverage of diversified impact types of glass is realized, and the system has the remarkable advantages that cross validation can be carried out by using multi-dimensional test data, the accuracy and reliability of impact resistance evaluation are greatly improved, and meanwhile, the application scene of a test result is widened.

This utility model discloses an adjustable drop test device for metal components, belonging to the technical field of drop test devices. The adjustable drop test device for metal components includes a support base, on the top of which are mounted a vertical drop test component, a spill drop test component, and an adjustable drop impact platform component. The vertical drop test component includes four guide rods fixed to the top of the support base. This utility model, by setting up a horizontal vertical drop test component and a spill drop test component, uses the guide rods as a base and a lifting mechanism to adjust the height of the placement base, combined with a limiting structure to achieve a vertical free fall of the component, thereby simulating drop scenarios at different heights. The spill drop component allows the metal component to be thrown in a parabolic trajectory, recreating an accidental drop. Therefore, this device can simulate both vertical and spill drop scenarios of metal components, solving the problem of the limited functionality of existing drop test devices and improving its practicality.

The invention provides a butt joint high-speed tensile property test device based on falling impact. The butt joint high-speed tensile property test device comprises a base, a support frame, an impact part, a clamping part and a data acquisition device, the two ends of the supporting frame are perpendicularly connected with the base. The clamping part is arranged on the base to clamp a sample with a required thickness; the impact part is movably arranged in the supporting frame and arranged above the clamping part, and the impact force of the impact part and the height of the impact part in the supporting frame can be adjusted so as to impact the clamping part; and the data acquisition device acquires test data. According to the invention, the actual stress condition of the butt joint can be truly simulated, the tensile test under different impact load effects is realized, the stability and accuracy of test data are ensured, the clamping part can clamp the samples with various thicknesses, the tensile test on the butt joint samples with different thicknesses under a high strain rate is realized, and the test efficiency is improved. And the high-speed tensile property of the butt joint structure can be evaluated, so that the welding quality of the butt joint is evaluated.

The application provides a kind of active and passive combination ice prevention method and device, including ice prevention demand surface, synthetic jet exciter, hydrophobic material layer, and hydrophobic material is pre-set on the ice prevention demand surface;When water droplet impacts the ice prevention demand surface, at this time the surface has ice prevention demand, synthetic jet exciter is used to spray jet on the ice prevention demand surface, jet is directly impacted by water droplet on the ice prevention demand surface, changes the water droplet motion trajectory and weakens the speed of water droplet impacting the ice prevention demand surface, regulates the impact dynamic characteristics of liquid droplet, reduces the contact time, the velocity gradient of jet and wall produces lift to promote liquid droplet to quickly separate and away from surface, hot jet maintains super-hydrophobic good performance, super-hydrophobic material reduces jet energy consumption, to achieve the purpose of active and passive combination ice prevention.The application can meet the large-area ice prevention demand under low energy consumption condition, reduce the cost and complexity of ice prevention device, and improve the ice prevention effect.

This disclosure aims to provide a drop impact testing apparatus capable of reliably impacting a test specimen with a first weight. [Solution] A drop impact test apparatus according to one aspect of the present disclosure is a drop impact test apparatus capable of performing an impact test by dropping a first weight onto a test specimen, comprising: a guide rail extending in the vertical direction; a frame body guided by the guide rail and capable of free falling in the vertical direction; a first weight that falls together with the frame body and collides with the test specimen; and a connecting mechanism that connects the frame body and the first weight so that the weight of the first weight is selectively loaded onto the test specimen, wherein the connecting mechanism holds the first weight in a predetermined position relative to the frame body when the frame body is free falling and does not restrain the vertical upward movement of the first weight relative to the frame body when it collides with the test specimen.

The invention provides a modularized shielding door performance testing device which comprises a testing assembly, the testing assembly is composed of an energy storage mechanism and an impact mechanism, the testing assembly abandons a traditional testing mode of impact through falling of an impact block, and a spring energy storage impact mode is used for testing; the impact performance test of the shielding door can be realized without occupying a relatively large space, the test is convenient and rapid, the test force can be regulated and controlled through an adjusting rod, the counterweight regulation and control of a test part are not needed, the operation process is simplified, and the problem that the impact block is required to be configured to a proper counterweight during the impact test of the existing test device, and the test time is shortened is solved. The problems that the impact block is lifted to the required height and then is lifted to the corresponding height to be released, so that the impact block impacts the shielding door to achieve the test operation are solved, the impact test mode needs to occupy a large top space so that the impact block can be lifted to the required height, and the balance weight of the impact block needs to be reconfigured under different test requirements are solved.