JP5071875B1 - Soil sampling device - Google Patents

Abstract

The present invention provides a soil sampling device that can easily collect soil by simplifying the shape of a sampler, and that is less susceptible to failure and easy to maintain.
In a soil collection device in which a sampler for collecting soil is provided on a rod inserted into the ground, the sampler is composed of a body member having a substantially square cross section, and a side surface of the body member. A plurality of substantially square-shaped openings 23 for collecting soil are arranged at predetermined intervals along the longitudinal direction of the main body member 21, and the center line of the opening along the longitudinal direction of the main body member 21 is the main body member 21. Is offset from the center line along the longitudinal direction of the. The side surface 22 on the front side of the main body member 21 that defines the plurality of openings 23 includes a first side surface portion 22a and a second side surface portion 22b, and the first side surface portion 22a is formed from the second side surface portion 22b. The flange 24 is integrally formed along the first side surface portion 22a.
[Selection] Figure 3

Description

  The present invention relates to a soil collecting device, and more particularly to a soil collecting device for ground investigation.

  Housing manufacturers, including major and small and medium-sized companies, are always conducting ground surveys during construction. The Swedish sounding test is a test established in the JIS standard, and because of its simplicity, most of the ground surveys for detached houses have now been carried out by this test. The result of the Swedish sounding test can be used to determine whether the soil is soft or firm and to determine the thickness and distribution of the soft layer.

  Various soil sampling devices that can be carried out in parallel with the Swedish sounding test have been developed. This soil sampling device can determine soil quality and measure water content. The sampling work by the soil sampling device is performed using the survey hole formed by the Swedish sounding test, the soil sampling device is inserted into the survey hole from the tip through the rod, and the handle connected to the rod is rotated. As a result, the soil necessary for the sampler provided on the rod is collected. The sampler is composed of, for example, a double-cylinder inner cylinder and an outer cylinder that can rotate relative to each other, and each is provided with a sampling port. The sampling port is opened and closed and a sample is taken in by relative rotation of the inner and outer cylinders. (See, for example, Patent Document 1).

Japanese Patent No. 3884723

  However, since the sampler of the conventional soil sampling device has a cylindrical shape, the frictional resistance at the time of insertion into the investigation hole is large and insertion is difficult. In addition, the conventional sampler has a complicated shape and has movable parts, so there are many failures and it is difficult to maintain.

  Accordingly, it is an object of the present invention to provide a soil sampling device that can easily collect soil by simplifying the shape of the sampler, and that is less troublesome and easy to maintain.

  The present invention has been made to solve the above problems, and the soil collection device according to the present invention is a soil collection device in which a sampler for soil collection is provided on a rod inserted into the ground. A main body member having a substantially square cross section, and a plurality of openings for collecting soil disposed at predetermined intervals along the longitudinal direction of the main body member on a side surface of the main body member. The center line along the direction is offset from the center line along the longitudinal direction of the main body member.

  With this configuration, the soil sampling apparatus according to the present invention can easily collect soil with a simple structure.

  In order to collect soil more easily and reliably, the soil collection device according to the present invention includes a side surface portion of the main body member that defines an opening, and a first side surface portion along the longitudinal direction of the main body member. It is preferable that a second side surface portion is provided, the first side surface portion is formed thinner than the second side surface portion, and a flange is integrally formed along the first side surface portion.

  In order to collect the soil more easily and reliably, the opening is preferably substantially square.

  The main body member preferably includes a first main body member and a second main body member, and the first and second main body members are preferably connected by a connecting portion. By constituting the main body member from a plurality of members, it becomes possible to easily collect soils at a plurality of depths at a time.

  It is preferable that the soil sampling apparatus further includes a sheet for covering the opening. By providing the sheet, when a sampler is inserted into the investigation hole, contamination of soil other than the target depth can be avoided.

  The sampler is preferably made of stainless steel. When the sampler is made of stainless steel, the durability of the sampler is improved.

  According to the present invention, it is possible to provide a soil collection device that can easily collect soil by simplifying the shape of the sampler, and that is less likely to break down and easy to maintain.

It is an external view which shows a soil sampling apparatus. It is a perspective view of an intermediate sampler. (A) It is a front view of an intermediate sampler. (B) It is a right view of an intermediate sampler. (A) It is a front view of a front-end | tip sampler. (B) It is a right view of a front-end | tip sampler.

  Hereinafter, a soil sampling apparatus 10 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external view showing a soil sampling device 10, FIG. 2 is a perspective view of an intermediate sampler 20 (first body member), FIG. 3 (a) is a front view thereof, and FIG. It is a right view. 4A is a front view of the tip sampler 30 (second main body member), and FIG. 4B is a right side view thereof. Here, the side surface 22 in which the opening 23 provided along the longitudinal direction (axial direction) of the intermediate sampler 20 is defined as the front surface.

  As shown in FIG. 1, the soil collecting apparatus 10 according to the embodiment of the present invention includes a rod 12, a handle 11 attached to one end of the rod 12 by a connecting member 13, and a rod 12 by a connecting portion (not shown). An intermediate sampler 20 for collecting soils provided at multiple ends of the sampler and a tip sampler 30 for collecting soils provided in the intermediate sampler 20 are provided. The rod 12 is composed of, for example, a single rod or has a desired length by connecting a plurality of rods 12. The rod 12 and the handle 11 may be a rod and a handle used for the Swedish sounding test. The intermediate sampler 20 and the tip sampler 30 are set to have a small resistance with respect to the investigation hole so that, for example, the radius of the rod 12 and the lengths of the diagonal lines of the cross-sectional shapes of the intermediate sampler 20 and the tip sampler 30 are substantially equal. Set to.

  As shown in FIGS. 2 and 3, the intermediate sampler 20 has a configuration in which a cylindrical right-side connecting portion 25 and a left-side connecting portion 26 are provided at both ends of a substantially quadrangular prism-shaped main body member 21. As shown in FIG.3 (b), the cross section of the main body member 21 of the intermediate sampler 20 is substantially square shape. The intermediate sampler 20 includes a plurality of openings 23 for collecting soil disposed on the side surface 22 of the main body member 21 at predetermined intervals along the longitudinal direction of the main body member 21. The opening 23 is formed in a substantially square shape, and penetrates from the side 22 toward the opposite side (not shown).

  A center line (not shown) along the longitudinal direction of the main body member 21 of the opening 23 is offset from a center line (not shown) along the longitudinal direction of the main body member 21. That is, the side surface 22 on the front side of the main body member 21 that defines the plurality of openings 23 includes the first side surface portion 22a and the second side surface portion 22b, and the first side surface portion 22a is the second side surface portion. It is formed thinner than 22b. A flange 24 is integrally formed along the first side surface portion 22a. That is, in the present embodiment, if the direction indicated by the arrow A in FIG. 2 (the right rotation direction seen from above) is defined as the rotation direction by the handle operation when collecting soil, the opening 23 is defined with respect to the rotation direction. The first side surface portion 22 a that is the rear side is formed thinner than the second side surface portion 22 b, and the flange 24 protrudes from the side surface 22.

  The right side connection part 25 and the left side connection part 26 are provided in order to connect with other members (the rod 12, the front-end | tip sampler 30, etc.) along an axial direction. The connection with other members is a connection method by fitting, a method of forming a screw part for joining to each member and connecting by screwing, or a method of providing a joint as a separate member and connecting by a joint. It doesn't matter. When the assembly of each member is performed by screwing, the rotation direction of the handle 11 at the time of soil collection shown by the arrow A in FIG.

  A tip sampler 30 for collecting soil is further provided at one end of the intermediate sampler 20 shown in FIGS. The tip sampler 30 has the same configuration as the intermediate sampler 20, but differs from the intermediate sampler 20 in that the left side is an insertion portion 36 for inserting the soil collecting device 10 into the investigation hole.

  As shown in FIG. 4, the tip sampler 30 includes a cylindrical right-side connecting portion 35 at the right end of a substantially quadrangular prism-shaped main body member 31 and an insertion portion 36 formed in a conical shape at the left end. As shown in FIG.3 (b), the cross section of the main body member 31 of the front-end | tip sampler 30 is a substantially square shape. The front-end sampler 30 includes a plurality of openings 33 for collecting soil disposed on the side surface 32 of the main body member 31 at predetermined intervals along the longitudinal direction of the main body member 31. The opening 33 is formed in a substantially square shape and penetrates from the side surface 32 toward the opposite side surface (not shown).

  Also in the front end sampler 30, the center line (not shown) along the longitudinal direction of the main body member 31 of the opening 33 is offset from the center line (not shown) along the longitudinal direction of the main body member 31. That is, the side surface 32 on the front side of the main body member 31 that defines the plurality of openings 33 includes the first side surface portion 32a and the second side surface portion 32b, and the first side surface portion 32a is the second side surface portion. It is formed thinner than 32b. A flange 34 is integrally formed along the first side surface portion 32a. That is, in the present embodiment, the first side surface portion 32a on the rear side of the opening portion 33 with respect to the rotation direction by the handle operation when collecting soil is formed thinner than the second side surface portion 32b, and the flange 34 is provided. Has a protruding shape.

  The right connecting portion 35 is provided to connect with other members (such as the intermediate sampler 20) along the axial direction. As described above, the connection with other members may be any method. When the assembly of each member is performed by screwing, the direction is the same as the direction of rotation of the handle 11 when collecting the soil, as indicated by an arrow A in FIG. The intermediate sampler 20, the tip sampler 30, and the sampler are preferably made of stainless steel in order to provide durability.

  Next, a soil sampling method by the soil sampling apparatus 10 according to the embodiment of the present invention will be described. The sampling work by the soil sampling device 10 is performed using a survey hole (not shown) formed by a Swedish sounding test. The operator of the soil sampling device 10 holds the handle 11, inserts the insertion portion 36 of the tip sampler 30 into the investigation hole, and inserts the tip sampler 30 and the intermediate sampler 20 so as to reach the depth to be investigated. When the tip sampler 30 and the intermediate sampler 20 reach the desired depth, the handle 11 is rotated clockwise (in the direction of arrow A in FIG. 2). When the handle 11 is rotated, the flanges 34 and 24 of the tip sampler 30 and the intermediate sampler 20 collect the soil on the inner wall of the investigation hole, and the collected soil is inserted into the openings 33 and 23. After the handle 11 is rotated several times, the sampling operation is completed by pulling out the soil sampling device 10. If a lot of soil quality is required, this operation is repeated.

  As described above, in the soil sampling apparatus 10 according to the embodiment of the present invention, the intermediate sampler 20 and the tip sampler 30 are easily inserted into the investigation hole and the main body members 21 and 31 have a substantially square cross section. It can be pulled out. As described above, since the insertion and extraction become easy, soil at a plurality of depths can be collected at a time.

  In the soil sampling apparatus 10 according to the embodiment of the present invention, a plurality of soil sampling units arranged at predetermined intervals along the longitudinal direction of the main body members 21 and 31 on the side surfaces 22 and 32 of the main body members 21 and 31. The center lines along the longitudinal direction of the body members 21 and 31 of the openings 23 and 33 are offset from the center line along the longitudinal direction of the body members 21 and 31. Since the first side surface portions 22a and 32a are formed thinner than the second side surface portions 22b and 32b, the intermediate sampler 20 and the thick second side surface portions 22b and 32b are used for collecting the soil. While ensuring the strength of the tip sampler 30, the soil can be collected easily and reliably.

  Furthermore, in the soil sampling apparatus 10 according to the embodiment of the present invention, the flanges 24 and 34 are formed along the first side surfaces 22a and 32a that define the openings 23 and 33. It is easy to collect soil at the time of collection, and even sand, silt, clay, and corrosive soil with high water content, which were difficult to collect with conventional samplers, can be collected easily and reliably.

  As described above, the soil sampling apparatus 10 according to the embodiment of the present invention has a simplified and simple shape with no moving parts as compared with the conventional sampler, so that soil can be collected easily and reliably. However, there are few failures and the maintenance becomes easy. Further, by using stainless steel, strength is ensured and durability is improved.

  In the present embodiment, the intermediate sampler 20 and the tip sampler 30 are configured by two samplers. However, the configuration includes a plurality of intermediate samplers 20 according to the sampling depth, and either the intermediate sampler 20 or the tip sampler 30 is provided. It may be configured to be only. When the tip sampler 30 is not provided, an insertion member such as a screw point used in the Swedish sounding test is provided at the tip of the intermediate sampler 20 for insertion.

  Moreover, it is good also as a structure provided with sheets, such as a vinyl sheet for covering the opening parts 23 and 33. FIG. A sheet | seat is attached to a front-end | tip part by a predetermined method, and inserts so that the opening parts 23 and 33 may be plugged when inserting the soil sampling apparatus 10 in a research hole. When the intermediate sampler 20 and the tip sampler 30 reach the target depth, the sheet is released from the openings 23 and 33 by pulling up the handle 11 once. Thus, by providing the sheet, when the sampler is inserted into the investigation hole, contamination of soil other than the target depth can be avoided.

  In this embodiment, the sampling method using the survey hole formed in the Swedish sounding test has been described. However, it is also possible to insert the material into a hole other than the survey hole formed in the Swedish sounding test and perform a soil survey. It is. Moreover, although the opening parts 23 and 33 were set as the structure penetrated toward the opposing side surface, you may make it the structure which does not penetrate.

10 Soil Collection Device 11 Handle 12 Rod 20 Intermediate Sampler (First Body Member)
21 Body member 22 Side surface 22a First side surface portion 22b Second side surface portion 23 Opening portion 24 Flange 30 Tip sampler (second body member)
31 body member 32 side surface 32a first side surface portion 32b second side surface portion 33 opening portion 34 flange 36 insertion portion

Claims (6)

In the soil collection device provided with a sampler for soil collection on the rod inserted into the ground,
The sampler includes a main body member having a substantially square cross section;
Provided on the side surface of the main body member with a plurality of openings for collecting soil disposed at predetermined intervals along the longitudinal direction of the main body member,
A soil collecting device, wherein a center line of the opening along the longitudinal direction of the main body member is offset from a center line along the longitudinal direction of the main body member. The side surface of the main body member defines the opening, and includes a first side surface portion and a second side surface portion along a longitudinal direction of the main body member,
The first side surface portion is formed thinner than the second side surface portion,
The soil sampling apparatus according to claim 1, wherein a flange is integrally formed along the first side surface portion.   2. The soil collecting apparatus according to claim 1, wherein the opening has a substantially square shape. The main body member includes a first main body member and a second main body member,
The soil sampling apparatus according to claim 1, wherein the first and second main body members are connected by a connecting portion.   The soil collecting apparatus according to claim 1, further comprising a sheet for covering the opening.   The soil sampler according to claim 1, wherein the sampler is made of stainless steel.

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