CN104777028B - A kind of anti-disturbance sample erecting device - Google Patents

Abstract

The invention discloses an anti-disturbance sample installation device, which includes a top cap, a rubber film, a film-supporting cylinder, a first clamp, a second clamp, a fixing frame and a base. It is tightened by the first hoop, and there is an air extraction hole on the film tube. The fixing frame is formed by splicing the left fixing frame and the right fixing frame and is tightened by the second hoop. The lower end of the fixing frame has a diameter close to the raised part and Matching lower socket, the upper end of the fixing frame has an upper hole whose diameter is close to and matching with the film sleeve, the lower socket of the fixing frame is sleeved on the raised part of the base, and the film sleeve is inserted into the upper socket and goes deep into the inner In the cavity, there are finishing holes on the side wall of the fixing frame, and the rubber film is lined inside the film bearing tube. The upper end of the rubber film is set on the top cap and tied tightly with a rubber ring, and the lower end is set on the raised part and tied tight with a rubber ring. . The use of the anti-disturbance sample installation device can reduce the disturbance of the soil sample caused by artificially flipping the rubber film many times, greatly improving the accuracy of the follow-up experiment, and the sample is fixed more firmly during the test process, which can reduce the Manual and fixed operation by human experimenters reduces the difficulty of operation for experimenters.

Description

An anti-disturbance sample installation device

technical field

The invention relates to an anti-disturbance sample installation device, which belongs to the field of indoor soil mechanics tests.

Background technique

Before the present invention, in the process of installing the sample in the indoor test, the rubber film was generally used to cover the sample with a film-supporting cylinder, and the air was sucked from the suction hole to make the film close to the inner wall of the film-supporting cylinder, and then the soil sample and the film-supporting tube were placed Place the tube on the base, turn over the lower end of the rubber film to cover the base, turn over the upper end of the rubber film and remove the film-supporting tube, use the film-supporting tube to tie the bottom of the sample tightly with a rubber ring, and use a split circular mold to clamp the sample , flip the upper end of the rubber film over the split film tube, install the top cap of the sample, turn over the top end of the rubber film to cover the top cap, put the film tube on the sample again, and use the rubber ring to connect the rubber film to the top cap. truss. It can be seen that in the traditional process of sample installation and fixation, the film-supporting cylinder needs to be placed on the sample many times to fix it, and the rubber film, the base and the top cap are tightened. Therefore, this device has the following defects: 1. During the sample installation process, the upper end of the rubber film is turned over many times. These processes will cause disturbance to the soil sample, which will affect the accuracy of the related experiments of the soil sample, especially for the original state of soft clay, silt soil, silty soil, etc. For the installation of soft soil samples, due to the low strength of the samples, a slight disturbance will have a greater impact on the samples; 2. The installation process of the above samples is extremely cumbersome and inconvenient to operate; 3. The entire operation process requires multiple Manually fixing the sample is difficult to operate and is not conducive to the integrity of the sample.

Contents of the invention

In view of the deficiencies in the background technology, the technical problem to be solved by the present invention is to provide an anti-disturbance sample installation device that can reduce the disturbance of the soil sample during the installation process of the sample and make the sample installation easier.

The present invention is accomplished by adopting the following technical solutions: anti-disturbance sample installation device, which is characterized in that it includes a top cap, a rubber film, a film-supporting cylinder, a first tight hoop, a second tight hoop, a fixing frame and a base. The film-supporting cylinder is formed by splicing multi-lobed film-splitting cylinders and is tightened by the first hoop. The film-supporting cylinder has an air suction hole, the base has an upward protrusion, and the fixing frame consists of a left fixing frame and a The right fixed frame is spliced and formed and tightened by the second hoop. The fixed frame has an inner cavity, and the lower end of the fixed frame has a lower socket whose diameter is close to and matches the raised part. The upper end of the fixed frame has a diameter The upper socket that is close to and matched with the film holder, the lower socket of the fixed frame is sleeved on the raised part of the base, the film socket is inserted into the upper socket and goes deep into the inner cavity, the side wall of the fixed frame A sorting hole is opened, and the film-supporting cylinder is lined with the rubber film, the upper end of the rubber film is set on the top cap and fastened with a rubber ring, and the lower end is set on the raised part and fastened with a rubber ring.

Advantages and effects of the present invention: 1. The installation of the sample is carried out by the film-bearing cylinder formed by the multi-lobed membrane-separating cylinder, unlike the traditional test method that requires the film-bearing cylinder to enclose the sample many times for fixing and rubber The work of tightening the ring can greatly reduce the disturbance of the soil sample; 2. Add a fixed frame to support and fix the film-bearing tube, and the finishing holes on the side of the fixed frame can be used to put the lower end of the rubber film on the raised part of the base. It reduces the disturbance of the soil sample caused by artificially flipping the rubber film multiple times; 3. In the traditional sample installation, the film-forming cylinder and the split circular mold are required. Yes, the test device has been simplified and optimized; 4. During the test process, the fixed frame fixes the sample more firmly, which can reduce the manual fixing operation of human experimenters and reduce the difficulty of operation for experimenters. The above-mentioned anti-disturbance sample installation device is applicable to various indoor geotechnical tests, such as triaxial test, resonance column test, etc., which can not only effectively shorten the sample installation time, but also greatly reduce the disturbance caused by human operation on soil samples, greatly improving test accuracy.

Description of drawings

Fig. 1 is a structural schematic diagram of the anti-disturbance sample installation device provided by the present invention.

Fig. 2 is a schematic cross-sectional view of the structure of half of the film separating cylinder in Fig. 1 .

Fig. 3 is a schematic cross-sectional view of the other half of the membrane separating cylinder in Fig. 1 .

FIG. 4 is a schematic cross-sectional view of the structure of the fixing bracket in FIG. 1 .

FIG. 5 is a schematic top view of the fixing frame in FIG. 1 .

FIG. 6 is a schematic cross-sectional view of the structure of the first clamp in FIG. 1 .

In each accompanying drawing: 1, top cap; 2, rubber membrane; 3, first tight hoop; 4, second tight hoop; 5, fixed frame; 6, base; 1. Protruding portion; 10. Second clamp; 11. Inner cavity; 12. Lower jack; 13. Upper jack; 14. Finishing hole; 15. Annular protrusion; 16. Blind hole; 17. Suction gap .

Detailed ways

The accompanying drawings show the technical solution of the present invention and its embodiments, and the relevant details and working principles of the embodiments will be further described below in conjunction with the accompanying drawings.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, and Fig. 6, the anti-disturbance sample installation device provided by the present invention includes a top cap 1, a rubber film 2, a film-supporting cylinder, and a first clamp 3 , the second tight hoop 4, the fixed frame 5 and the base 6, the film-bearing tube is spliced and formed by the multi-lobed film-separating tube 7 and tightened by the first tight hoop 3, generally adopts the split-film-separating tube 7, and the split-film The butt joints between the cylinders 7 have protrusions and grooves that match each other and are distributed vertically. When the membrane separation cylinders 7 are docked, the protrusions snap into the grooves. The base 6 has an upward raised portion 9, the fixed frame 5 is formed by splicing the left fixed frame and the right fixed frame and is tightened by the second hoop 4, the fixed frame 5 has an inner cavity 11, and the fixed frame The lower end of the 5 has a lower insertion hole 12 whose diameter is close to and matches the protrusion 9, and the upper end of the fixed frame 5 has an upper insertion hole 13 whose diameter is close to and matched with the film holder, and the lower insertion hole of the fixed frame 5 12 is sleeved on the raised portion 9 of the base 6, the film-bearing tube is inserted into the upper socket 13 and goes deep into the inner cavity 11, and the side wall of the fixing frame 5 is provided with a finishing hole 14, and the film-bearing tube is lined with The rubber film 2, the upper end of the rubber film 2 is set on the top cap 1 and is fastened with a rubber ring, the lower end is set on the raised part 9 and is fastened with a rubber ring, and the upper end of the inner side of the film tube has an annular protrusion 15, the annular protrusion The inner diameter at the place surrounded by 15 is identical with the top cap 1 diameter.

Referring to Fig. 1 and Fig. 6, in order to make the fixing of the first hoop 3 more firm, a blind hole 16 matching the first screw rod 31 of the first hoop 3 is provided on the film bearing tube, and the first screw rod 31 Screwed into the first blind hole 16, the blind hole 16 can effectively position the first screw rod 31, so that the first clamp 3 can be tightened more firmly on the film bearing tube.

Referring to Fig. 1 and Fig. 6, the first hoop 3 is arranged on the upper end of the fixed frame 5, and the first hoop 3 is aligned with the suction hole 8 with a suction gap 17, because the first hoop 3 is tightened on the The clamping effect is the best when the middle part of the film-supporting cylinder is in the middle, and the air-breathing effect is the best when the air extraction hole 8 is set in the middle of the film-supporting cylinder. It can be exposed from the suction gap 17; in addition, because the first hoop 3 is supported by the fixing frame 5, the structure can be made more stable.

The operation method of the above-mentioned anti-disturbance sample installation device is described in detail below:

1. Operation steps:

Membrane separation tube butt joint → cover rubber film → inhale → fix with fixing frame → turn down the bottom rubber film → turn up the top rubber film → remove the fixing frame → remove the split film forming tube.

2. The specific operation is as follows:

Firstly, the multi-lobed film separating cylinder 7 is docked through the protrusion and the groove interface, and the first screw 31 on the first clamp 3 is aligned with the blind hole 16 of the film supporting cylinder, so that the suction hole 8 can pass through the reserved suction hole. The suction gap 17 is exposed, and the first clamp 3 can be used to clamp the film tube by the first screw rod 31; the rubber rings used to tighten the lower and upper ends of the rubber film 2 are placed on the film tube that was tightened in the previous step; the rubber film 2 is set on the film-supporting cylinder, the two ends of the rubber film 2 are turned out, and pulled up from the air hole 8, so that the rubber film 2 is close to the inner wall of the film-supporting cylinder, and the film-supporting cylinder is placed on the outside of the sample, and then the sample and the supporting film are placed Place the film tube together on the base 6; use the fixing frame 5 to fix the placed film tube, and tighten it with the second clamp 4 and the second nut 41, so far, the film tube with the sample has been fixed Then, turn over the lower end of the rubber film 2 to wrap the raised portion 9 on the base through the finishing hole 14 on the side of the fixed frame 5, and tie it tightly with the rubber ring that has been placed on the film tube in advance; turn the upper end of the rubber film to wrap The top cap is fastened with the rubber ring that has been put on the film support tube in advance; finally, the second clamp 4, the fixing frame 5, the first clamp 3 and the film support tube are removed in sequence, and the installation of the sample is completed.

Claims (9)

1. An anti-disturbance sample installation device is characterized in that: it comprises a top cap, a rubber film, a membrane-supporting tube, a first tight hoop, a second tight hoop, a fixing frame and a base, and the membrane-bearing tube is divided into multiple parts. The film tube is spliced and formed and tightened by the first hoop. The film supporting tube has an air suction hole, the base has an upward protrusion, and the fixing frame is formed by splicing the left fixing frame and the right fixing frame. The second tight band is tightened, and the fixed frame has an inner cavity, the lower end of the fixed frame has a lower socket whose diameter is close to and matches the raised part, and the upper end of the fixed frame has a diameter close to and matched with the film sleeve the upper socket of the fixed frame, the lower socket of the fixed frame is sleeved on the raised part of the base, the film bearing tube is inserted into the upper socket and goes deep into the inner cavity, and a finishing hole is opened on the side wall of the fixed frame. The film-supporting cylinder is lined with the rubber film, the upper end of the rubber film is set on the top cap and tied tightly with a rubber ring, and the lower end of the rubber film is set on the raised part and tied tightly with a rubber ring. 2. The anti-disturbance sample installation device according to claim 1, characterized in that: a blind hole matching the first screw rod of the first clamp is opened on the film bearing tube, and the first screw rod is screwed into the second screw rod. in a blind hole. 3. The anti-disturbance sample installation device according to claim 1 or 2, characterized in that: the first clamp is arranged on the upper end of the fixing frame, and there is a suction gap at the place where the first clamp is aligned with the suction hole . 4. The anti-disturbance sample installation device according to claim 1 or 2, characterized in that: the inner upper end of the film-bearing tube has an annular protrusion, and the inner diameter of the area surrounded by the annular protrusion is the same as the diameter of the top cap. 5. The anti-disturbance sample installation device according to claim 3, characterized in that: the upper end of the inner side of the film-bearing tube has an annular protrusion, and the inner diameter of the area surrounded by the annular protrusion is the same as the diameter of the top cap. 6. The anti-disturbance sample installation device according to claim 1 or 2, characterized in that: the butt joints between the membrane separation cylinders have protrusions and grooves that match each other and are vertically distributed, and the membrane separation The protrusion snaps into the groove when the barrel is docked. 7. The anti-disturbance sample installation device according to claim 3, characterized in that: the butt joints between the membrane separation cylinders have protrusions and grooves that match each other and are vertically distributed, and the membrane separation cylinders are docked When the protrusion snaps into the groove. 8. The anti-disturbance sample installation device according to claim 4, characterized in that: the butt joints between the membrane separation cylinders have protrusions and grooves that match each other and are vertically distributed, and the membrane separation cylinders are docked When the protrusion snaps into the groove. 9. The anti-disturbance sample installation device according to claim 5, characterized in that: the butt joints between the membrane separation cylinders have protrusions and grooves that match each other and are vertically distributed, and the membrane separation cylinders are docked When the protrusion snaps into the groove.