A combined loading cylinder

Abstract

The invention belongs to the technical field of mechanical hydraulic system, and particularly relates to a combined loading oil cylinder which overcomes the limitations of the impact loading of a drop hammer and the rapid loading of an energy accumulator, so as to achieve a better impact load. The combined loading oil cylinder comprises a hydraulic cylinder and an explosion cylinder, wherein the cylinder bodies of the hydraulic cylinder and the explosion cylinder are relatively static; the hydraulic cylinder is provided with a hydraulic loading cavity and a loaded cavity; the explosion cylinder is provided with an explosion cavity; the piston of the hydraulic cylinder and the piston of the explosion cylinder are connected through a same piston rod; the hydraulic loading cavity and the explosion cavity perform combination loading. According to the combined loading oil cylinder, the combination loading of the hydraulic pressure and the explosive force is adopted, through the combination loading of the hydraulic cylinder upper cavity and the explosion cavity of the explosion cylinder, a better impact loading can be provided for the hydraulic cylinder, the combined piston comprising the piston rod, the piston of the hydraulic cylinder and the piston of the explosion cylinder can be started to move quickly under the combined action of the hydraulic pressure of the hydraulic cylinder upper cavity and the explosive load generated by the explosion cavity, and the combined loading oil cylinder is particularly suitable for ultrahigh-pressure hydraulic systems with impact loading requirements.

Description

technical field [0001] The invention belongs to the technical field of mechanical hydraulic systems, and in particular relates to a combined loading oil cylinder. Background technique [0002] At present, to obtain the impact load acting on the hydraulic cylinder, there are mainly two methods: drop hammer impact loading and rapid loading. The test principle of drop hammer impact loading is: a weight of a certain mass G falls freely from a certain height H, with a certain energy (GH) and speed The impact test cylinder increases the pressure in the lower chamber of the cylinder. This test method simulates loads with different characteristics by changing the weight G and impact height H to obtain impact loads with different characteristics. The energy required for fast loading is generally provided by the accumulator, and the loading cylinder acts on the test cylinder to increase the pressure in the lower chamber of the test cylinder. This test method simulates different char...

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Problems solved by technology

[0003] However, the two methods of drop hammer impact loading and fast loading have their limitations. The load of drop hammer impact loading is the kinetic energy of the drop hammer, which has certain requirements on the weight of the drop hammer, and the size of the impact load is limited; the rapid loading system The load comes from the potential energy compressed by the accumulator, which is converted into a load with a certain speed through the booster system, but the energy conversion requires a process and a certain time, so the loading speed gradient is slower than the drop weight impact test method

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