An electronically controlled crash testing machine

Abstract

The invention discloses an electrically controlled impact tester. The electrically controlled impact tester comprises a plunger type cylinder, a gear, a force accumulation spring, a push rod and a worktable; a rack is horizontally connected to the piston rod of the plunger type cylinder; the rack is arranged above the gear and engaged with the gear; the gear comprises a gear housing and a turning wheel; the turning wheel is arranged in the gear housing and capable of rotating in the gear housing; a groove is formed in the turning wheel; an internal tooth block connected by use of a pin shaft is arranged in the groove; the bottom of the internal tooth block is cambered; a spring rod is arranged at the central axis of the turning wheel; one end of the spring rod extends into the cambered part of the internal tooth block; the spring rod is controlled to rotate by a permanent magnet and an electromagnetic coil; the tail end of the push rod is connected with the force accumulation spring; the push rod is connected with the turning wheel by use of a string; a collision head is arranged on the top of the push rod; the worktable is arranged under the push rod. The electrically controlled impact tester has the advantages that while the influence of hydraulic damping during testing is eliminated, a testing structure is adjusted according to observed test data, and therefore, the operation convenience of the test is effectively improved and the requirements of impact tests with a plurality of variables can be met.

Description

technical field [0001] The invention relates to an electronically controlled collision testing machine, which belongs to the technical field of mechanical engineering. Background technique [0002] At present, the research and development and production of products are mostly developed in the direction of safety, energy saving and environmental protection. Among them, the importance of safety has obviously been set in the first place by major manufacturers, and material reliability is regarded as the key point of product safety research. The important branch has been continuously deepened. Therefore, in order to know the impact resistance of the required materials, the multi-impact crash tester came into being. Among the known testers, there are many difficulties in operation, and there is hydraulic pressure in the collision return. It is difficult to meet the scientific requirements of the test requirements due to the damping effect and the inconsistency with the actual col...

AI Technical Summary

Problems solved by technology

[0002] At present, the R&D and production of products are mostly developed along the direction of safety, energy saving, and environmental protection. Among them, the degree of emphasis on safety has obviously been set at the top by major manufacturers, and material reliability is taken as the key point of product safety research. An important one has been continuously deepened. Therefore, in order to know the impact resistance of the required materials, a multi-impact impact test machine came into being. Among the known test machines, there are many difficulties in operation, and there are hydraulic pressure in the impact return process. The damping effect does not match the actual collision effect, etc. It is difficult to meet the scientific requirements of the test. Therefore, there is an urgent need for a test that can effectively improve the operation convenience of the test and can adapt to the needs of various variable collision tests. machine

Images