JP4166967B2 - Soil sampler - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a soil sample collection device for soil soil survey, and in particular, separates soil layers at regular intervals from existing holes used for other soil survey purposes. The present invention relates to a soil sample collection device for collecting a sample.
[0002]
[Prior art]
Collecting soil samples in each subsurface soil layer at a construction site, etc., supports the results of a geological survey such as the Swedish sounding test and ensures that the soil strength based on the geological structure of the land is ascertained. It is extremely important. Generally known as an apparatus for collecting the soil sample is a soil sampling apparatus known from JP-A-9-209350. As disclosed in the publication, this soil sampling device is inserted into the penetrating hole of the penetrating rod that remains after the penetrating rod is penetrated into the ground, such as the Swedish sounding test, to investigate the soil strength of the land. It has a structure to use. Here, only the main part will be described. This sampling apparatus includes a long pipe-shaped main body tube member, a sampling tube provided so as to be able to protrude and retract from an opening formed in a side portion of the main body tube member, and the sampling A biasing means for biasing the tube so as to protrude from the opening, a wire for swinging the sampling tube to be accommodated in the main body tube member, and a lever provided to operate the wire from the ground A member.
[0003]
When collecting the soil sample, the lever member is operated to pull the wire, and the sample collection tube is accommodated in the main body tube member so that the protrusion from the main body tube member is eliminated, and then the main body tube member is inserted into the penetration hole. insert. When the lever member is operated again to loosen the wire, the sampling tube protrudes from the main body tube member by the action of the urging means, and comes into contact with the wall surface (soil surface) of the penetration hole. When the apparatus is moved so as to be pulled out in this state, the sample collection tube bites into the soil, and the soil sample is accommodated in the sample collection tube through the opening. In this way, when the soil sample is collected and then the device is pulled out from the penetration hole, the wire is pulled by operating the lever, and the sample collecting tube is accommodated in the main body tube member and then pulled out. As described above, since the soil sampling apparatus disclosed in Japanese Patent Laid-Open No. 9-209350 has a structure in which the sample collection tube can be accommodated in the main body tube member as necessary, the device is inserted into and removed from the penetration hole, and the soil sample is collected. It has the advantage that the work can be carried out smoothly.
[0004]
[Problems to be solved by the invention]
However, the existing penetration holes for inserting the soil sampling device do not always remain in an ideal shape, and in most cases, depending on the soil quality, water content, etc. in each soil layer Collapsed or narrowed in diameter. On the other hand, in the conventional soil sampling device, since the wire for swinging the sampling tube is provided outside the main body tube member, the soil bites around the wire when the device is inserted into the penetration hole. The wire gets stuck. For this reason, not only can soil samples not be collected, but also during wire operation or when inserting / removing the device into the penetration hole, the wire is subjected to a load due to the biting of the soil, cutting the wire, There are problems such as deformation of the connected parts and the like causing damage to the apparatus. In order to alleviate such a problem, Japanese Patent Application Laid-Open No. 11-117279 has proposed a structure in which a wire is covered with a protective cover. The resistance at the time of inserting the device into the device increases, and problems such as difficulty in inserting the device into the penetration hole occur. In addition, the conventional soil sampling device is capable of collecting a soil sample to a deep position by connecting a plurality of main body pipe members. The connection form of the main body pipe members is the end of each main body pipe member. This is a range in which the threaded portion formed in the portion is screwed. Therefore, when an additional connection is made to the main body pipe member, the wire is wound around the main body pipe member in accordance with the screwing operation of the main body pipe member, and it is substantially impossible to add the main body pipe member after the device is assembled once. It was possible.
[0005]
The present invention has been made in view of the above problems, and includes a hollow main body member having a handle disposed at one end thereof, an opening portion disposed at a predetermined interval on a side portion of the main body member, and the opening portion. A sample collecting part that is swingably arranged with respect to the main body member so as to be able to protrude and retract from the main body member, and an urging member that urges the sample collecting part to protrude from the opening part, and an engagement piece at one end ; wherein together with the holder operating part that houses the engagement piece of the sampling portion are integrally formed, before Symbol movably disposed in the body member, the engagement piece of this sample collection unit Ri by the movement operation a retractable operating means for accommodating the sample collection unit to the inside of the body member to yield capacity to the holder operating part, and is characterized in that an operating means for operating said retractable operating means.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4, reference numeral 10 denotes a soil sample collecting device, which includes an operation unit 20, a main body member 30 connected to the operation unit 20, and a cone 40 connected to the foremost end of the main body member 30. ing.
[0008]
The operation unit 20 includes a T-shaped internal hollow handle 21, an operation bar 22 that is movably provided through the handle 21, and a lever member 23 for operating the operation bar 22. Consists of Further, the main body member 30 is configured by connecting a plurality of sampler portions 31, 31,. Each of the sampler portions 31 has the same structure, and here, the detailed structure of one of them will be described.
[0009]
The sampler portion 31 is swingable by being connected to the main body tube 32 formed of a hollow tubular member, an operation bar 33 provided movably in the main body tube 32, and a pin 34 to the main body tube 32. A supported sample collection unit 35 and an urging member 36 that urges the sample collection unit 35 to project outward from an opening 32a formed in the main body tube 32 are provided. In the present embodiment, the urging member 36 is a leaf spring.
[0010]
The sample collection unit 35 includes a holder 37 connected to the main body tube 32 by a pin 34 and a collection tube 38 fitted to the holder 37. The holder 37 has a hollow shape with one end projecting from the main body tube 32 opened, and the sampling tube 38 is attached so as to project from the opening of the holder 37. The sampling tube 38 has a transparent cylindrical shape formed of a hard resin material, and is detachably fitted to the holder 37. The other end of the holder 37 is formed on an engagement piece 37a, and a holder operation portion 33a is integrally formed on the operation bar 33 correspondingly. The holder operation portion 33a is formed by penetrating and forming a guide hole 33c capable of accommodating the engagement piece 37a of the holder 37 in a cylindrical portion 33b along the inner peripheral surface of the main body pipe 32. The holder operating part 33a is normally, but than the holder 37 are arranged in pyramidal 40 side has deviated from the holder 37, by moving the operation bar 33 to the handle 21 side, engage into the guide hole 33c It moves to the position which guides and accommodates the piece 37a , and is comprised so that the sample-collecting part 35 may be rock | fluctuated and accommodated in the main body pipe | tube 32, as shown in FIG.1 (b) and FIG.2 (b). . The opening 32a of the main body tube 32 is provided at two locations on the same line in the longitudinal direction of the main body tube 32, and the sample collection section 35, the urging member 36 and the holder operation section 33a are provided for each opening 32a. Is provided.
[0011]
As shown in FIGS. 3A and 3B, the connection portions C1 and C2 provided at both ends of each sampler portion 31 have a shape in which the connection portion C1 facing the operation portion 20 has a recess 31a. Moreover, the connection part C2 which faces the cone 40 side is formed in the shape which has the convex part 31b which corresponds to the said recessed part 31a. Each sampler part 31 is connected by fitting the connecting part C2 of the other sampler part 31 to the connecting part C1 and screwing it, whereby the sample collection part 35 in each sampler part 31 is connected. The operation bars 33 are aligned on the same line and are arranged in a straight line. Note that the end portions of the operation bar 33 are exposed to the connection portions C1 and C2, and the end portions of the operation bar 33 overlap each other by matingly engaging the concave portion 31a and the convex portion 31b. , Combined with screws. In addition, the structure of the connection part with the main body member 30 in the operation part 20 is the same structure as the connection part C2, and this is coupled to the connection part C1 of the sampler part connected to the operation part 20. As a result, the operation bar 22 in the operation unit 20 to the operation bar 33 in the most advanced sampler unit 31 (the sampler unit 31 to which the cone 40 is connected to the tip) are integrally connected in a straight line. It is configured to move together by operation. Moreover, the structure of the connection part (not shown) with the main body member 30 in the cone 40 is the same structure as the said connection part C1, and can connect the cone 40 to the most advanced sampler part 31 without trouble. It is like that. In addition, since the operation bars 22 and 33 are exposed to the outside in each of the connection portions C1 and C2, a rubber cylindrical cover (not shown) is attached to the connection portions C1 and C2 during operation. The soil is prevented from entering the sampler portion 31 from inside.
[0012]
For example, when a Swedish sounding test is performed, the soil sample collection device 10 collects a soil sample of each soil layer by inserting the penetration rod (not shown) into the remaining penetration hole h. Used for. When collecting a soil sample, first, the lever member 23 is operated to move the operation bars 22 and 33 to the lever member 23 side. Thereby, as shown in FIGS. 1B and 2B, the engaging portion 37a of the holder 37 is guided and accommodated in the guide hole 33c of the holder operating portion 33a, and the sample collecting portion 35 is urged by the biasing member 36. The main body tube 32 swings and is accommodated against this biasing.
[0013]
Next, the soil sample collecting device 10 is inserted into the penetration hole h from the cone 40 side. At this time, since the sample collection part 35 is accommodated in the main body tube 32 as described above, there is no projection that obstructs the insertion of the apparatus, and the apparatus 10 can be inserted into the penetration hole h very smoothly. . After the apparatus 10 is inserted to a predetermined position in the ground in this way, when the lever member 23 is moved backward, the operation bars 22 and 33 move to the cone 40 side. As a result, the holder operating portion 33a is separated from the holder 37. As a result, as shown in FIGS. 1 (a) and 2 (a), the sample collecting portion 35 is opened by the urging member 36. The pin 34 is rotated around the fulcrum so as to protrude from 32a, and the open end of the sampling tube 38 is brought into contact with the wall surface of the penetration hole h. In this state, when the apparatus 10 is moved in the direction of pulling out from the penetration hole h with the handle 21, the open end of the sampling tube 38 bites into the soil, and the sampling tube 38 is placed in the soil at that position as shown in FIG. Of samples are packed. At this time, if the apparatus 10 is reciprocated several times along the penetration hole h, the soil sample can be taken into the collection tube 38 more reliably.
[0014]
When the device 10 is pulled out from the ground after taking the soil sample into the collection tube 38, first, the lever member 23 is operated again to move the operation bars 22, 33 to the lever member 23 side. The sample collection unit 35 is accommodated in the main body tube 32 by the operation of the operation unit 33a. As a result, the sample collection unit 35 does not hinder when the device 10 is pulled out, and when the device 10 is pulled out, the collection tube 38 is caught by the soil, and an extra soil sample in a different place is collected, or the holder 37 or the like is removed. It is possible to prevent the occurrence of troubles such as damage. After taking out the device 10 from the ground in this way, if the sampling tube 38 is removed from the holder 37, a soil sample at each depth can be obtained.
[0015]
As is apparent from the above description of the operation, in the embodiment of the present invention, the operation bars 22 and 33 are operated by operating the lever member 23, whereby the sample collection unit 35 is moved with respect to the main body tube 32. It is configured to appear and disappear. As is clear from this, the lever member 23 constitutes an example of the operation means described in the claims, and the operation bars 22 and 33 constitute an example of the intrusion operation means described in the claims. It is to be made. In addition, about the matter which comprises this invention, such as these operation means, the appearance operation means, etc., it can substitute by structures other than the above in the range which does not deviate from the meaning of invention.
[0016]
【The invention's effect】
According to the present invention, the sample collection section is swung by the operation bar provided movably in the main body tube. For this reason, the soil does not bite around the operation area of the operation bar, and even after the device is inserted into the penetration hole, the operation bar can be reliably operated, thereby operating the sampling unit properly, There are advantages such as being able to reliably collect soil samples. In addition, there is an advantage that a load due to soil is not applied to the operation bar during operation of the operation bar or when the device is inserted into and removed from the penetration hole, and damage to the device can be prevented. In addition, since there is no portion protruding on the outer periphery of the device like the conventional protective cover, there is an advantage that the device can be easily inserted into the penetration hole. Furthermore, the present invention has a connecting portion that can connect each sampler portion by aligning the means such as an operation bar for swinging the sample collecting portion or a conventional wire substantially linearly. The operation can be ensured. In particular, when wires are used to swing the sample collection unit as in the past, it is possible to prevent problems such as winding of the wire around the sampler unit during additional connection of the sampler unit. The effect that the sampler part can be adjusted to an arbitrary length by adjusting the sampler part is obtained. Moreover, by comprising in this way a several sampler part, conveyance of an apparatus, the handling at the time of a soil sample collection, etc. become very easy.
[Brief description of the drawings]
FIG. 1 is an enlarged partially cutaway cross-sectional view of a main part of a soil sample collecting device according to the present invention.
FIG. 2 is a front view of a soil sample collecting device according to the present invention.
FIG. 3 is an enlarged perspective view of a main part of the soil sample collecting device according to the present invention.
FIG. 4 is an explanatory view showing a usage mode of the soil sample collecting device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Soil sample collection device 20 Operation part 21 Handle 22 Operation bar 23 Lever member 30 Main body member 31 Sampler part 32 Main body pipe 33 Operation bar 35 Sample collection part 36 Energizing member 37 Holder 38 Collection pipe 40 Cone

Claims (1)

A hollow body member with a handle disposed at one end;
Openings disposed at predetermined intervals on the side of the body member;
A sample collection unit arranged to be swingable with respect to the main body member so as to be able to protrude and retract from the opening, and having an engagement piece at one end;
A biasing member that biases the sampling part to protrude from the opening ;
Wherein together with the holder operating part that houses the engagement piece of the sampling portion are integrally formed, before Symbol movably disposed in the body member, the engagement piece of this sample collection unit Ri by the movement operation a retractable operating means for accommodating the sample collection unit to the inside of the body member to yield capacity to the holder operating part,
A soil sample collecting apparatus comprising: operating means for operating the infestation operating means.

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