Power-driven and manual integrated specimen demolder

Abstract

The invention discloses a power-driven and manual integrated specimen demolder. The power-driven and manual integrated specimen demolder comprises a hinge lifting mechanism 1, a support frame 2, a driving screw rod 3, a reduction gearbox 4, a motor 5, a control handle box 6, a lifting supporting plate 7, an upper limiting switch 8, a lower limiting switch 9, a rotary hand wheel 10, an inner thread pipe 11, a lifting screw rod 12, a sample pushing disc 13, a fixed rotary knob 14, an upper demolding hole 15 and a lower demolding hole 16. According to the invention, the integration of power driving and manual operation is adopted, not only can the demolding efficiency be improved and the physical output be relieved, but also manual demolding can be carried out when a power supply is not supplied; two limiting switches are arranged, not only can prevent the driving screw rod from being damaged, but also can prevent the motor from being overloaded; the hinge lifting mechanism can prevent the oil leakage of a hydraulic lifting jack demolder, is high in pushing stroke, and is short in time consumption in pushing by an effective height; ascending and descending operation is coherent, and the operation efficiency is high; the power-driven and manual integrated specimen demolder is simple in structure, low in manufacturing cost, convenient to manufacture and maintain, and convenient to operate.

Description

technical field [0001] The invention relates to a test piece stripper, in particular to an electric and manual integrated test piece stripper. Background technique [0002] Cylinder test specimens are often involved in civil engineering, such as concrete specimens, petroleum asphalt concrete specimens, and mixture specimens in material tests, compaction tests, soil density, and exploration earth-taking tools in geotechnical tests. These test specimens all need to use a stripper to remove the specimens from the mold before the test. Most of the ejector mechanisms of the existing demoulding devices use hand-operated hydraulic jacks. This kind of demoulding device often has the following disadvantages: the manual demoulding device is used to demould the test specimen, and the work efficiency is low, and the physical exertion is relatively large; The jack is easy to leak oil and pollute the sanitary environment; the single stroke of the hydraulic jack is small, and it is often ...

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide an electric and manual integrated test piece stripper, which uses a hinge lifting mechanism instead of a hydraulic jack to solve oil leakage, small single stroke and coherent operation. The problem of poor performance; the combination of motor drive and manual hand cranking can not only improve the demoulding efficiency of the sample demoulding device, reduce the physical exertion of the staff, but also can still test the test sample when there is a power failure or on a site without power supply. Parts are demolded; two limit switches are set to avoid damage to the drive screw and prevent the motor from overloading

Images