Clamp for taking out cylindrical sample after pilot test of hydraulic oil in triaxial pressure chamber and use method

A pressure chamber and hydraulic oil technology, used in the manufacture of tools, pliers, etc., can solve the problem of inconvenient removal of cylindrical samples, achieve the effects of light weight, ensure reliability, and reduce energy consumption

Active Publication Date: 2021-09-03
NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a triaxial pressure chamber for the inconvenience of taking out the cylinder sample after the pilot test of the hydraulic oil in the triaxial pressure chamber in the prior art Cylinder sample removal jig after hydraulic oil pilot test in chamber

Method used

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  • Clamp for taking out cylindrical sample after pilot test of hydraulic oil in triaxial pressure chamber and use method
  • Clamp for taking out cylindrical sample after pilot test of hydraulic oil in triaxial pressure chamber and use method
  • Clamp for taking out cylindrical sample after pilot test of hydraulic oil in triaxial pressure chamber and use method

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Experimental program
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Effect test

Embodiment 1

[0044]A jig for taking out a cylindrical sample after a pilot test of hydraulic oil in a triaxial pressure chamber, including two clamping parts and a fixed bolt 2-3, each clamping part includes a clamp arm section 1, a central connecting piece 2 and a fixed connection in sequence. The handle section 3, the central connectors 2 of the two clamping parts are connected by the fixed bolt 2-3, so that the two central connectors 2 can rotate around the fixed bolt in the plane where they are located, and the clamp arm section 1 It includes a clamping handle 1-1, a first connecting rod 1-2 and a second connecting rod 1-3 connected in sequence, the inner wall of the clamping handle 1-1 is an active surface for clamping the cylindrical shape, two The clamping handle 1-1 of the clamping part is relatively embracing the cylindrical shape, and the clamping handle 1-1 is fixed on the end of the first connecting rod 1-2, and the first connecting rod 1-2 and the second connecting rod 1-2 The...

Embodiment 2

[0048] The method of using the clamp for taking out the cylindrical sample after the pilot test of the hydraulic oil in the triaxial pressure chamber includes the following steps:

[0049] Step 1. Shake the grip section 3 with both hands, and open and close left and right to ensure that the central connector 2 of the fixture can move freely;

[0050] Step 2. Keep the clamping handle 1-1 in the fully open state and penetrate below 1 / 2 of the depth of the pressure chamber. At this time, keep the vertical position unchanged. Slowly adjust the holding section 3 with both hands to reduce the distance between the two clamping handles 1-1. Distance, when the clamping handle 1-1 touches the cylindrical sample, the grip section 3 of the two hands is slowly moved closer until it is tightened, and gently pulled, after confirming that it is safe, the cylindrical sample is put out to the sample tray at one time;

[0051] Step 3, hang the clamp on the upper port of the pressure chamber, the...

Embodiment 3

[0054] In order to improve the stability of clamping, the clamping handle 1-1 includes a metal arc-shaped plate 1-1-0 and a rubber pad 1-1-1 closely fitted and fixed on the inner wall of the arc-shaped plate. The surface of the rubber pad 1-1-1 is the working surface, and the convex-concave texture is formed on the working surface. Preferably, the convex-concave texture is composed of arc-shaped grooves and planar protrusions arranged at intervals, the concave part is arc-shaped, and the surface of the raised part is plane. The rubber pad with low temperature resistance, oil corrosion resistance and ductility can Buffer clamping force, the rubber pad contacting the cylindrical sample surface has a convex-concave texture to enhance the friction with the sample surface during the clamping process and prevent slipping during the clamping process. When the hydraulic oil is in the air, the hydraulic oil attached to the rubber pad quickly flows into the pressure chamber along the co...

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Abstract

The invention provides a clamp for taking out a cylindrical sample after a pilot test of hydraulic oil in a triaxial pressure chamber and a use method. The clamp comprises two clamping parts and a fixing bolt, each clamping part comprises a clamping arm section, a central connecting piece and a handheld section which are fixedly connected in sequence, the central connecting pieces of the two clamping parts are connected through the fixing bolt, the two central connecting pieces rotate in a plane where the fixing bolt is located through the fixing bolt, each clamping arm section comprises a clamping handle, a first connecting rod and a second connecting rod which are connected in sequence, the inner wall of each clamping handle is an acting surface used for clamping the cylindrical sample, the clamping handles of the two clamping parts oppositely embrace the cylindrical sample, the clamping handles are fixed to the ends of the first connecting rods, the first connecting rods and the second connecting rods are connected in a smooth transition manner, and the included angle between the first connecting rods and the second connecting rods is 90 degrees. The clamp has important significance in improving the working efficiency, reducing the energy consumption, ensuring the test result and the human body safety and the like.

Description

technical field [0001] The invention relates to the technical field of freeze-thaw soil mechanics testing, in particular to a jig for taking out a cylindrical sample after a pilot test of hydraulic oil in a triaxial pressure chamber and a use method thereof. Background technique [0002] The study of soil mechanical properties is inseparable from indoor experiments, especially when simulating the stress state of soil buried at different depths, the application of confining pressure is indispensable. For the development of triaxial mechanical tests on shallow soil, water or air is generally used to apply confining pressure to the sample, and the size basically does not exceed 1.0MPa. For deep soil, a larger buried depth corresponds to a larger confining pressure value, and the application of a larger confining pressure is achieved through hydraulic oil. After the test, the post-test samples in the hydraulic oil in the pressure chamber are basically It is manually grasped and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B7/00B25B7/02
CPCB25B7/00B25B7/02Y02E30/30
Inventor 张淑娟杜玉霞孙志忠
Owner NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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