Cantilever beam impact pendulnm

Abstract

The invention discloses a cantilever beam impact pendulnm. The cantilever beam impact pendulnm comprises a pendulum body suspension mechanism and a pendulum body, the pendulum body suspension mechanism comprises a swing rod, a pendulum shaft jointed at one end of a swing rod, and a hook on the swing rod, the pendulum body is a U-shaped structure, a supporting seat is arranged at the other end of the swing rod, the supporting seat and a center at top of the pendulum body are connected, counterweight apertures for assembling counterweights are arranged at top of the pendulum body and two ends ofthe pendulum body, the counterweights are connected with two ends of the pendulum body, a support block is arranged at the upper end of the counterweight, and the support block is connected with thecounterweight aperture at the top of the pendulum body. The U-shaped structure of the pendulum body and its arc design can reduce wind resistance to a minimum state, energy loss of a whole machine isreduce to the minimum state, by assembling counterweights with different mass and changing a pre-elevation angle of the pendulum, the impact energy and impact speed are conveniently changed, multi-energy impact usage is satisfied, and the cantilever beam impact pendulnm has the advantages of simple structure and dismounting, convenient debugging, and convenient operation.

Description

technical field [0001] The invention relates to a pendulum impact testing machine, in particular to a cantilever beam impact pendulum. Background technique [0002] The pendulum impact testing machine can be used to measure the impact resistance of metal materials under dynamic load, so as to judge the mechanical properties of materials under dynamic load, and to obtain the impact absorption energy and impact toughness of materials. At present, pendulum impact testing machines are divided into simply supported beam impact testing machines and cantilever beam impact testing machines. The pendulum hammer body structure is similar, such as Figure 7 As shown, a C-shaped impact block is fixed at the lower end of a metal rod, and a V-shaped impact blade is embedded in the C-shaped groove of the impact block. The jaw seats of the two testing machines are different, and are suitable for simply supported beam and cantilever beam respectively. Type, the pre-lift angle is generally 12...

AI Technical Summary

Problems solved by technology

The existing deficiencies of this cantilever beam impact testing machine mainly show in the following aspects: 1, adopt the pendulum with fixed energy, its function is single, one machine can not do multi-energy impact test at the same time, it needs to replace the whole pendulum Because of the heavy weight of the pendulum, in the process of replacing the pendulum, the workload is heavy and the operation is heavy; 2. The existing pendulum adopts a C-shaped structure, and the part of the pendulum is processed with an inclined plane. The air resistance cannot be minimized; 3. The structure of the C-type pendulum hammer body makes the center of mass of the hammer difficult to fix, and repeated weights are required to ensure that the center of mass is at the striking point, otherwise the hammer shaft will bend during the impact test Phenomenon

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