CN214668746U

CN214668746U - Auxiliary improvement device for soil resistivity test

Info

Publication number: CN214668746U
Application number: CN202120679694.1U
Authority: CN
Inventors: 杨笑男; 刘建刚; 李连营; 孙怀军; 李亚飞
Original assignee: Tianjin Survey And Design Institute Group Co Ltd
Current assignee: Tianjin Survey And Design Institute Group Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-11-09
Anticipated expiration: 2031-04-02

Abstract

The utility model provides an auxiliary improving device for soil resistivity test, a graduated scale is arranged at the front end and the rear end of the top surface of a positioning plate, the precision of the graduated scale is centimeter level, an elliptical trough is arranged at the center position of the top surface of the positioning plate, four probe mechanisms are equidistantly arranged above the positioning plate along the direction from left to right of the elliptical trough, and the bottom ends of the four probe mechanisms are all positioned below the positioning plate, through the positioning plate and the elliptical groove, 4 probe mechanisms are stably arranged above the elliptical groove of the positioning plate, can guarantee that 4 probe mechanism remain on same straight line track all the time, and the scale on the locating plate of each probe mechanism interval accessible accurately reads in real time, saves the length of a rice chi measuring process, has also improved efficiency of software testing greatly when improving the measuring accuracy, reduces the resistivity test operation degree of difficulty and has very strong portability.

Description

Auxiliary improvement device for soil resistivity test

Technical Field

The utility model belongs to the technical field of the electrical prospecting in the geotechnical engineering investigation, especially, relate to experimental supplementary device that improves of soil resistivity.

Background

The principle of the electrical prospecting technology in geotechnical engineering investigation is that according to the different resistivity of different geotechnical layers or the same geotechnical layer due to different factors such as components, structures and the like, direct current is attacked into the ground through a grounding electrode, a stable artificial electric field is established, the resistivity change in the vertical direction of a certain point or the horizontal direction of a certain section is observed on the ground surface, and therefore the distribution of the rock stratum or the characteristics of the geological structure are known.

The existing ground probe of the soil resistivity test instrument on the market adopts independent steel rods, a tape measure needs to be pulled automatically to position and beat the steel rods in the field test process, so that the test precision and efficiency are low, the accuracy of the resistivity reading result of the test is affected, the independent steel rod probe is difficult to guarantee to vertically enter the ground in the beating process, four-pole equidistant method (namely a temperature storage device) test process needs to strictly guarantee that four steel rods are kept on the same straight line, the distance between the steel rods is controlled, the traditional measurement methods such as the tape measure are singly adopted, the error is large, the efficiency is low, and therefore a new structure needs to be designed.

Disclosure of Invention

In view of this, the utility model aims at providing a supplementary device that improves of soil resistivity test to solve prior art measuring accuracy and the problem of inefficiency.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

experimental supplementary improvement device of soil resistivity, including locating plate mechanism, the rivet, probe mechanism and scale, locating plate mechanism includes the locating plate, the locating plate is the rectangular plate structure, four angles of locating plate top surface all are equipped with a first preformed hole that is used for passing the rivet, both ends all set up a scale around the locating plate top surface, and the scale precision is the centimetre level, locating plate top surface central point puts and is equipped with the elliptical trough, four probe mechanism of direction equidistance installation from the left hand right side along the elliptical trough in the top of locating plate, and four probe mechanism bottoms all are in the below of locating plate.

Further, the probe mechanism comprises probe units and fixing units, each probe unit is installed above the elliptical trough through one fixing unit, and the bottom ends of the probe units are located below the positioning plate.

Furthermore, both ends are equipped with one row of cylinder groove respectively around the locating plate top surface, and every row of cylinder groove all is in between elliptical trough and a scale, and every row of equal equidistance and parallel arrangement in two adjacent cylinder grooves, and every cylinder inslot wall is equipped with the internal thread.

Furthermore, the probe unit comprises a probe, a first limiting ring, a second limiting ring and a probe top, the top end of the probe is fixedly connected with the probe top to form a T-shaped structure, the first limiting ring and the second limiting ring are sequentially arranged above the probe from top to bottom, a gap is arranged between the first limiting ring and the second limiting ring, the fixing unit comprises a fixing plate, a fixing column, a first arc-shaped holding block, a second arc-shaped holding block, a lead screw, an L-shaped plate and bolts, the fixing plate is of a rectangular plate structure, two sides of the fixing plate are respectively and fixedly connected with the L-shaped plate to form a zigzag structure, the bottom surface of the L-shaped plate is provided with a second reserved hole, the side wall of the bottom end of each bolt is provided with external threads, the bottom end of each bolt penetrates through the second reserved hole and is in threaded connection with the inside of a cylindrical groove, the central position of the top surface of the fixing plate is provided with a rectangular groove, the inner wall of the left side of the rectangular groove is provided with the fixing column, and the right end of the fixing column is provided with the first arc-shaped holding block, rectangular channel right side inner wall is equipped with the through-hole, and the piece is embraced to the lead screw left end installation second arc after passing the through-hole, and the lead screw cup joints for the activity with the through-hole inner wall, and the second arc is embraced the piece and is located the rectangular channel inside, and first arc is embraced the piece, the second arc is embraced the piece and is pressed from both sides tight probe middle part outer wall from the left and right sides respectively, and first arc is embraced the piece, the second arc is embraced the piece and all is in between first spacing ring, the second spacing ring, the probe bottom passes the below that is in the locating plate behind the elliptical trough.

Furthermore, the probe unit further comprises a conical head, the conical head is arranged on the bottom surface of the probe, and a spiral groove is formed in the side wall of the bottom end of the probe, so that the bottom end of the probe forms a spiral structure.

Furthermore, the fixing unit further comprises an annular handle, and the right end of the lead screw is fixedly sleeved with the annular handle.

Furthermore, the locating plate is made of rubber.

Compared with the prior art, experimental supplementary device of improving of soil resistivity have following beneficial effect:

(1) experimental supplementary improvement device of soil resistivity, through locating plate and elliptical trough, make 4 probe mechanism stably arrange the elliptical trough top of locating plate in, through the rivet, can be fixed in the soil top with the locating plate, in the testing process, can guarantee that 4 probe mechanism remain on same straight line track all the time, and the scale on each probe mechanism interval accessible locating plate is real-time accurate to be read out, save the trombone chi measurement process, also improved efficiency of software testing when improving the measuring accuracy greatly, reduce the resistivity test operation degree of difficulty and have very strong portability.

(2) Experimental supplementary improvement device of soil resistivity, first arc is embraced piece and second arc and is embraced the piece and be used for pressing from both sides tight probe, first spacing ring, second spacing ring are used for embracing piece and second arc for first arc and embrace the piece spacing, have improved first arc and have embraced piece and second arc and embrace the tight efficiency of clamp to the probe, probe bottom lateral wall is equipped with the helicla flute for the probe bottom forms helical structure, makes the probe more easily taken out.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of an auxiliary improving device for a soil resistivity test according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a soil resistivity test auxiliary improvement device of an unassembled probe mechanism according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a probe mechanism according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a probe unit according to an embodiment of the present invention;

fig. 5 is a top view of a fixing unit in an unclamped state according to an embodiment of the present invention;

fig. 6 is a top view of a fixing unit in a clamping state according to an embodiment of the present invention.

Description of reference numerals:

1-a positioning plate mechanism; 11-a positioning plate; 12-an elliptical trough; 13-a cylindrical groove; 2-riveting; 3-a probe mechanism; 31-a probe unit; 311-a probe; 312-a first stop collar; 313-a second stop collar; 314-probe tip; 315-helical groove; 316-cone head; 32-a stationary unit; 321-a fixing plate; 322-fixed column; 323-a first arc holding block; 324-a second arc embracing block; 325-lead screw; 326-L template; 327-ring handle; 328-second preformed hole; 329-bolt; 4-graduated scale.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 6, the soil resistivity test auxiliary improvement device comprises: the locating plate mechanism 1, the rivet 2, the probe mechanism 3 and the graduated scale 4, the locating plate mechanism 1 comprises a locating plate 11, the locating plate 11 is of a rectangular plate structure, four corners of the top surface of the locating plate 11 are respectively provided with a first reserved hole for penetrating the rivet 2, the front end and the rear end of the top surface of the locating plate 11 are respectively provided with a graduated scale 4, the precision of the graduated scale 4 is centimeter level, the center position of the top surface of the locating plate 11 is provided with an elliptical trough 12, the four probe mechanisms 3 are equidistantly arranged above the locating plate 11 along the elliptical trough 12 from left to right, the bottom ends of the four probe mechanisms 3 are all positioned below the locating plate 11, the locating plate 11 is made of rubber (insulated), the 4 probe mechanisms are stably arranged above the elliptical trough of the locating plate through the locating plate and the elliptical trough, the locating plate can be fixed above soil through the rivet, in the testing process, the 4 probe mechanisms can be guaranteed to be always kept on the same linear track, and the distance between the probe mechanisms can be accurately read in real time through the graduated scale on the positioning plate, so that the measuring process of the length rod is omitted, the testing efficiency is greatly improved while the testing precision is improved, the resistivity testing operation difficulty is reduced, and the transportability is very strong.

As shown in fig. 2-3, the probe mechanism 3 includes probe units 31 and fixing units 32, each probe unit 31 is mounted above the elliptical trough 12 through one fixing unit 32, the bottom end of the probe unit 31 is located below the positioning plate 11, the fixing unit 32 is used for fixing the probe unit 31 above the positioning plate 11, a row of cylindrical troughs 13 is respectively arranged at the front end and the rear end of the top surface of the positioning plate 11, each row of cylindrical troughs 13 is located between the elliptical trough 12 and one scale 4, two adjacent cylindrical troughs 13 in each row are equally spaced and parallel, and an internal thread is arranged on the inner wall of each cylindrical trough 13.

As shown in fig. 2-6, the probe unit 31 includes a probe 311, a first limit ring 312, a second limit ring 313 and a probe top 314, the top end of the probe 311 is fixedly connected to the probe top 314 to form a T-shaped structure, the first limit ring 312 and the second limit ring 313 are sequentially arranged above the probe 311 from top to bottom, a gap is provided between the first limit ring 312 and the second limit ring 313, the fixing unit 32 includes a fixing plate 321, a fixing post 322, a first arc-shaped holding block 323, a second arc-shaped holding block 324, a screw 325, an L-shaped plate 326 and bolts 329, the fixing plate 321 is a rectangular plate structure, two sides of the fixing plate 321 are respectively fixedly connected to an L-shaped plate 326 to form a zigzag structure, a second reserved hole 328 is provided on the bottom surface of the L-shaped plate 326, a side wall of the bottom end of each bolt 329 is provided with external threads, and the bottom end of each bolt 329 is threaded into one cylindrical groove 13 after passing through one second reserved hole 328, a rectangular groove is arranged at the center of the top surface of the fixed plate 321, a fixed column 322 is arranged on the inner wall of the left side of the rectangular groove, a first arc-shaped holding block 323 is arranged at the right end of the fixed column 322, a through hole is arranged on the inner wall of the right side of the rectangular groove, a second arc-shaped holding block 324 is arranged after the left end of a screw rod 325 passes through the through hole, the screw 325 is movably sleeved with the inner wall of the through hole, the second arc-shaped holding block 324 is positioned in the rectangular groove, the first arc-shaped holding block 323 and the second arc-shaped holding block 324 clamp the outer wall of the middle part of the probe 311 from the left side and the right side respectively, the first arc-shaped embracing block 323 and the second arc-shaped embracing block 324 are located between the first limiting ring 312 and the second limiting ring 313, the bottom end of the probe 311 penetrates through the elliptical groove 12 and then is located below the positioning plate 11, the first arc-shaped embracing block 323 and the second arc-shaped embracing block 324 are used for clamping the probe 311, the first limiting ring 312 and the second limiting ring 313 are used for limiting the first arc-shaped embracing block 323 and the second arc-shaped embracing block 324, and the clamping efficiency of the first arc-shaped embracing block 323 and the second arc-shaped embracing block 324 on the probe 311 is improved.

As shown in FIG. 4, the probe unit 31 further includes a conical head 316, the conical head 316 is disposed on the bottom surface of the probe 311, and the spiral groove 315 is disposed on the side wall of the bottom end of the probe 311, so that the bottom end of the probe 311 forms a spiral structure, and the probe 311 is easier to be taken out.

As shown in fig. 5-6, the fixing unit 32 further includes a ring-shaped handle 327, and the right end of the screw 325 is fixedly sleeved with the ring-shaped handle 327, so that the screw 325 can be adjusted by a worker.

The utility model discloses a theory of operation: assembly of probe unit 31 and fixing unit 32: the worker firstly penetrates the bottom end of the probe 311 through the rectangular groove of the fixing plate 321, then uses the first arc-shaped holding block 323 to abut against the side wall of the probe 311 between the first limiting ring 312 and the second limiting ring 313, then rotates the annular wrench 327 to move the screw 325 to the left, and stops rotating the annular handle 327 until the first arc-shaped holding block 323 and the second arc-shaped holding block 324 clamp the probe 311 together, and at this time, the assembly work of the probe unit 31 and the fixing unit 32 is completed.

The length of the short axis of the central elliptical groove of the positioning plate 11 is close to the diameter of the side wall of the probe 311 so as to ensure that the probe 311 is stably hammered into the ground, and the positioning plate 11 is made of insulating rubber and can prevent the test failure caused by ground surface conduction;

when the measuring device is used, when the distance between the probes 311 needs to be changed to measure the resistivity of soil bodies with different depths, the probes can be directly changed along the elliptical grooves, the situation that the reading is always observed on the same straight line and is convenient to observe directly is ensured, and the positioning plate 11 is fixed on the ground by the aid of the rivet 2 during use, so that the positioning plate 11 is further prevented from moving.

The model of the soil resistivity tester used in the test is MS-1027.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Supplementary device that improves of soil resistivity test, its characterized in that: including locating plate mechanism (1), rivet (2), probe mechanism (3) and scale (4), locating plate mechanism (1) is including locating plate (11), locating plate (11) are the rectangular plate structure, locating plate (11) top surface four angles all are equipped with one and are used for passing the first preformed hole of rivet (2), both ends all set up one scale (4) around locating plate (11) top surface, and scale (4) precision is the centimetre level, locating plate (11) top surface central point puts and is equipped with elliptical trough (12), install four probe mechanism (3) along elliptical trough (12) from direction equidistance of left right side in the top of locating plate (11), and four probe mechanism (3) bottoms all are in the below of locating plate (11).

2. The soil resistivity test auxiliary improving device as claimed in claim 1, wherein: the probe mechanism (3) comprises probe units (31) and fixing units (32), each probe unit (31) is installed above the elliptical groove (12) through one fixing unit (32), and the bottom ends of the probe units (31) are located below the positioning plate (11).

3. The soil resistivity test auxiliary improving device as claimed in claim 2, wherein: two ends are equipped with one row of cylinder groove (13) respectively around locating plate (11) top surface, and every row of cylinder groove (13) all are in between elliptical trough (12) and scale (4), and every row of equal equidistance and parallel arrangement in two adjacent cylinder grooves (13), and every cylinder groove (13) inner wall is equipped with the internal thread.

4. The soil resistivity test auxiliary improving device as claimed in claim 3, wherein: the probe unit (31) comprises a probe (311), a first limiting ring (312), a second limiting ring (313) and a probe top (314), the top end of the probe (311) is fixedly connected with the probe top (314) to form a T-shaped structure, the first limiting ring (312) and the second limiting ring (313) are sequentially arranged above the probe (311) from top to bottom, a gap is formed between the first limiting ring (312) and the second limiting ring (313), the fixing unit (32) comprises a fixing plate (321), a fixing column (322), a first arc-shaped holding block (323), a second arc-shaped holding block (324), a lead screw (325), an L-shaped plate (326) and a bolt (329), the fixing plate (321) is of a rectangular plate structure, two sides of the fixing plate (321) are fixedly connected with an L-shaped plate (326) respectively to form a structure in a shape like a Chinese character 'ji', a second preformed hole (328) is formed in the bottom surface of the L-shaped plate (326), and an external thread is arranged on the side wall of the bottom end of each bolt (329), the bottom end of each bolt (329) penetrates through a second preformed hole (328) and then is connected to the inside of a cylindrical groove (13) in a threaded manner, a rectangular groove is formed in the center of the top surface of the fixing plate (321), a fixing column (322) is arranged on the inner wall of the left side of the rectangular groove, a first arc-shaped holding block (323) is installed at the right end of the fixing column (322), a through hole is formed in the inner wall of the right side of the rectangular groove, a second arc-shaped holding block (324) is installed after the left end of a lead screw (325) penetrates through the through hole, the screw rod (325) is movably sleeved with the inner wall of the through hole, the second arc-shaped holding block (324) is positioned in the rectangular groove, the first arc-shaped holding block (323) and the second arc-shaped holding block (324) clamp the outer wall of the middle part of the probe (311) from the left side and the right side respectively, the first arc-shaped embracing block (323) and the second arc-shaped embracing block (324) are positioned between the first limiting ring (312) and the second limiting ring (313), and the bottom end of the probe (311) penetrates through the elliptical groove (12) and then is positioned below the positioning plate (11).

5. The soil resistivity test auxiliary improving device is characterized in that: the probe unit (31) further comprises a conical head (316), the conical head (316) is arranged on the bottom surface of the probe (311), and a spiral groove (315) is formed in the side wall of the bottom end of the probe (311), so that the bottom end of the probe (311) forms a spiral structure.

6. The soil resistivity test auxiliary improving device is characterized in that: the fixing unit (32) further comprises an annular handle (327), and the annular handle (327) is fixedly sleeved at the right end of the screw rod (325).

7. The soil resistivity test auxiliary improving device as claimed in claim 1, wherein: the positioning plate (11) is made of rubber.