CN211825332U

CN211825332U - Triaxial sample soil cutter

Info

Publication number: CN211825332U
Application number: CN202020533956.9U
Authority: CN
Inventors: 张艳鹏; 王乙清; 苟迎霞
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-10-30
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a triaxial sample soil cutter in geotechnical engineering triaxial test soil sample preparation facilities field, which comprises a supporting rack, the lifter, the sleeve, the fixed screw, the slide cartridge, two sets of connecting rods, the cutting ring, go up the disc, lower disc, the knee, the support frame is including the upper plate, lower plate and four group's support columns, the support column of four groups is fixed between upper plate and lower plate, lower plate top center is carved with horizontal T type recess, the fixed screw is including first fixed screw and second fixed screw, first fixed screw thread passes the sleeve, second fixed screw thread passes the slide cartridge, lower disc is disc and inside disc down under including the outside.

Description

Triaxial sample soil cutter

Technical Field

The utility model relates to a geotechnical engineering triaxial test soil sample preparation facilities field specifically is a triaxial sample soil cutter.

Background

With the development of economy, various projects are more vigorous, geotechnical engineering investigation is an essential part, and a triaxial experiment is also an extremely important experiment and is usually used for obtaining the shear strength of a soil sample, but the preparation of the triaxial soil sample is a troublesome and error-prone task. However, the existing soil sample preparation technology is not complete, the prepared soil sample is not high in precision, and the efficiency is low. At present, soil is mostly placed on a current soil cutter and cut by a wire saw or a soil cutter, so that the precision is low, the speed is low, and the soil sample is easy to be disturbed. Chinese patent CN107328626A discloses a double-shaft multi-cutting multi-size soil cutter, which has an improved cutting rate, but for turfy soil with complicated plant root system, the mechanical cutting is very easy to take away the soil on the final soil sample. Therefore, the soil cutting equipment for the soil test is in the limelight to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a triaxial sample soil cutter and application method thereof, aim at overcomes prior art not enough, makes the sample inaccuracy promptly, receives the problem of disturbance easily.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a triaxial sample soil cutter, includes support frame, lifter, sleeve, fixed screw, slide cartridge, two sets of connecting rods, cutting ring, goes up disc, lower disc, knee, the support frame is including upper plate, lower plate and four groups support columns, four groups the support column is fixed between upper plate and lower plate, lower plate top center is carved with horizontal T type recess, the fixed screw is including first fixed screw and second fixed screw, first fixed screw thread passes the sleeve, second fixed screw thread passes the slide cartridge, the disc is disc and inside lower disc under disc and the outside down.

Preferably, the hole has been seted up at upper plate top center, the hole that the lifter inserted on the upper plate passes the sleeve, the aperture of hole slightly is greater than the diameter of lifter, the lifter can reciprocate and rotate, it installs in the lifter bottom to go up the disc, it all is provided with the nail and is used for fixed soil sample to go up disc bottom and lower disc top.

Preferably, the sliding barrel is sleeved on the lifting rod, the two groups of connecting rods are welded at the bottom end of the sliding barrel, first threads are carved on the lower portion of each connecting rod, two groups of ears are welded on two sides of the upper edge of the cutting ring, drilling holes are formed in the ears, the aperture of each drilling hole is larger than the diameter of each connecting rod at the position of the corresponding first thread and smaller than the diameter of the upper portion of each connecting rod, the portion, with the first threads, of the lower portion of each connecting rod penetrates through the corresponding drilling hole and is fixed through a nut which is externally connected with the corresponding first threads in a matched mode, and the sliding barrel can drive.

Preferably, the diameter of the cutting ring is thirty-nine points and one millimeter of the standard diameter of the triaxial sample, the height of the cutting ring is fifty millimeters, and the diameter of the upper disk is two millimeters smaller than the inner diameter of the cutting ring.

Preferably, disc and inside disc threaded connection form down under the outside, disc edge is carved with the round hole that does not communicate under the outside, inside disc bottom down is provided with antifriction bearing, antifriction bearing rotates and is connected with the bull stick, the diameter of inside disc equals the diameter of last disc down, the bull stick sets up bottom plate top down, the sculpture is equipped with the recess on the bull stick, the steel sheet has been placed to recess inside, the steel sheet front portion is the slice for T type rear portion.

Preferably, the welding of lifter lower part has the short threaded rod, the second screw thread has been carved with on knee upper portion, the round hole is inserted to the knee lower part, knee upper portion links to each other with the lifter through the cooperation of second screw thread and short threaded rod and fixes through external nut.

Compared with the prior art, the beneficial effects of the utility model are that: by arranging the sliding cutting ring, the disturbance to the soil sample can be reduced, and the precision of the soil sample is greatly improved; the lower disc and the upper disc are connected through the bent rod, so that the upper disc and the lower disc can rotate simultaneously, the torque is prevented from being transmitted through the soil sample, and the disturbance to the soil sample is reduced; by arranging the large-diameter lower disc, the damage to the edge of the disc due to the dead weight of the soil sample is avoided; the utility model discloses the principle is simple, and convenient operation can raise the efficiency to a certain extent, practices thrift some time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only examples of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional top view of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-lifting rod, 2-sleeve, 3-fixing screw, 301-first fixing screw, 302-second fixing screw, 4-upper bottom plate, 5-sliding barrel, 6-connecting rod, 7-cutting ring, 8-supporting column, 9-upper disk, 10-outer lower disk, 11-inner lower disk, 12-lower bottom plate and 13-bent rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the examples of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

a triaxial sample soil cutter comprises a support frame, a lifting rod 1, a sleeve 2, a fixing screw 3, a sliding cylinder 5, two groups of connecting rods 6, a cutting ring 7, an upper disc 9, a lower disc and a bent rod 13, wherein a short threaded rod is welded at the lower part of the lifting rod 1, a second thread is carved on the upper part of the bent rod 13, a round hole is inserted into the lower part of the bent rod 13, the upper part of the bent rod 13 is connected with the lifting rod 1 through the matching of the second thread and the short threaded rod and is fixed through an external nut, the fixing screw 3 comprises a first fixing screw 301 and a second fixing screw 302, the first fixing screw 301 penetrates through the sleeve 2, the second fixing screw 302 penetrates through the sliding cylinder 5, the upper disc 9 is installed at the bottom end of the lifting rod 1, and nails are arranged at the bottom end of the upper disc 9 and the top end;

the supporting frame comprises an upper bottom plate 4, the lifting device comprises a lower base plate 12 and four groups of supporting columns 8, wherein the four groups of supporting columns 8 are fixed between the upper base plate 4 and the lower base plate 12, a hole is formed in the center of the top end of the upper base plate 4, a lifting rod 1 is inserted into the hole in the upper base plate 4 and penetrates through a sleeve 2, the hole diameter of the hole is slightly larger than the diameter of the lifting rod 1, the lifting rod 1 can move up and down and rotate, a sliding cylinder 5 is sleeved on the lifting rod 1, two groups of connecting rods 6 are welded at the bottom end of the sliding cylinder 5, first threads are carved on the lower portions of the connecting rods 6, two groups of ears are welded on two sides of the upper edge of a circular knife 7, drilling holes are formed in the ears, the hole diameter of each drilling hole is larger than the diameter of the connecting rod 6 at the position of the first threads and smaller than the diameter of the upper portion of the;

the diameter of cutting ring 7 is three-axis sample standard diameter thirty-nine points one millimeter, the height of cutting ring 7 is fifty millimeters, the diameter of going up disc 9 is less than two millimeters of internal diameter of cutting ring 7, lower disc is including disc 10 under outside and inside disc 11 down, disc 10 forms with inside disc 11 threaded connection down under the outside, disc 10 edge is carved with the round hole that does not communicate under the outside, disc 11 bottom is provided with antifriction bearing under the inside, antifriction bearing rotates and is connected with the bull stick, the diameter of inside disc 11 down equals the diameter of going up disc 9, the bull stick sets up on bottom plate 12 top down, carve on the bull stick and be equipped with the recess, the steel sheet has been placed to recess inside, the steel sheet front portion is the slice for T type rear portion, 12 top center is carved and is equipped with horizontal T type recess down.

One specific application of this embodiment is: screwing a second fixing screw 302, unscrewing the first fixing screw 301, lifting the cutting ring 7 and the upper disc 9 together, screwing the first fixing screw 301, putting a soil sample in, connecting the bent rod 13, inserting the lower part of the bent rod 13 into a circular hole, connecting the upper part of the bent rod 13 with the lifting rod 1 through the matching of a second thread and a short threaded rod, and fixing the lifting rod through an external nut; unscrewing a second fixing screw 302 to enable the cutting ring 7 to move up and down and rotate, and cutting the soil sample to a standard triaxial sample by using a soil cutting knife or a wire saw while the cutting ring 7 continuously moves down; placing a steel sheet in a groove on a rotating rod, preventing an upper disc 9 and a lower disc from rotating, screwing an outer lower disc 10 downwards, placing the outer lower disc on a lower bottom plate 12, continuing to move a cutting ring 7 downwards, enabling the top surface of the cutting ring 7 to be basically parallel to the fixed needle surface of the lower disc, taking down a bent rod 13, lifting the upper disc 9 and fixing, cutting a soil sample along the surface of the cutting ring 7 by using a soil cutting knife, and leaving the soil sample damaged by nails; the residual soil is cleaned and each part is reset. By arranging the sliding cutting ring, the disturbance to the soil sample can be reduced, and the precision of the soil sample is greatly improved; the lower disc and the upper disc are connected through the bent rod, so that the upper disc and the lower disc can rotate simultaneously, the torque is prevented from being transmitted through the soil sample, and the disturbance to the soil sample is reduced; by arranging the large-diameter lower disc, the damage to the edge of the disc due to the dead weight of the soil sample is avoided; the utility model discloses the principle is simple, and convenient operation can raise the efficiency to a certain extent, practices thrift some time.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a triaxial sample soil cutter which characterized in that: including support frame, lifter (1), sleeve (2), fixed screw (3), slide cartridge (5), two sets of connecting rod (6), cutting ring (7), go up disc (9), lower disc, knee (13), the support frame is including upper plate (4), lower plate (12) and four groups support column (8), four groups support column (8) are fixed between upper plate (4) and lower plate (12), lower plate (12) top center is carved with horizontal T type recess, fixed screw (3) are including first fixed screw (301) and second fixed screw (302), sleeve (2) are passed to first fixed screw (301) screw thread, second fixed screw (302) screw thread passes slide cartridge (5), disc is disc (11) under disc (10) and the inside including the outside down.

2. The triaxial sample earth cutter of claim 1, wherein: the hole has been seted up at upper plate (4) top center, lifter (1) inserts the hole on upper plate (4) and passes sleeve (2), the aperture of hole slightly is greater than the diameter of lifter (1), lifter (1) can reciprocate and rotate, it installs in lifter (1) bottom to go up disc (9), it all is provided with the nail and is used for the fixed soil sample to go up disc (9) bottom and lower disc top.

3. The triaxial sample earth cutter of claim 1, wherein: the sliding cylinder (5) is sleeved on the lifting rod (1), the connecting rod (6) is welded at the bottom end of the sliding cylinder (5) in a two-group mode, first threads are arranged on the lower portion of the connecting rod (6) in an engraved mode, two groups of ears are welded on two sides of the upper edge of the cutting ring (7), drilling holes are formed in the ears, the hole diameter of each drilling hole is larger than the diameter of the connecting rod (6) at the position of the first threads and smaller than the diameter of the upper portion of the connecting rod (6), the part, with the first threads, of the lower portion of the connecting rod (6) penetrates through the drilling hole and is fixed through a nut which is externally connected with the first threads in a matched mode, and the sliding cylinder (5) can drive.

4. The triaxial sample earth cutter of claim 1, wherein: the diameter of the cutting ring (7) is one millimeter of a three-axis sample standard diameter thirty-nine points, the height of the cutting ring (7) is fifty millimeters, and the diameter of the upper disc (9) is smaller than two millimeters of the inner diameter of the cutting ring (7).

5. The triaxial sample earth cutter of claim 1, wherein: disc (10) and inside disc (11) threaded connection form down under the outside, disc (10) edge is carved with the round hole that does not communicate under the outside, inside disc (11) bottom is provided with antifriction bearing down, antifriction bearing rotates and is connected with the bull stick, the diameter of inside disc (11) down equals the diameter of last disc (9), the bull stick sets up bottom plate (12) top down, the sculpture is equipped with the recess on the bull stick, the inside steel sheet of having placed of recess, the steel sheet front portion is the slice for T type rear portion.

6. The triaxial sample earth cutter of claim 1, wherein: the welding of lifter (1) lower part has the short-thread pole, second screw thread has been carved with on curved bar (13) upper portion, the round hole is inserted to curved bar (13) lower part, curved bar (13) upper portion links to each other with lifter (1) through the cooperation of second screw thread and short-thread pole and fixes through external nut.