JP2003041564A - Soil sampling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soil sampling device allowing the parts thereof such as a sampling part to be surely operated and soil to be surely sampled. SOLUTION: This device is so formed that a sampling part 35 is projected from and recessed into opening parts 32a disposed in the side part of a body member 30 at specified intervals by movably operating an operating bar 33 movably installed in a hollow body member 30 having a handle 21 fitted to one end thereof. With the sampling part 35 stored in the body member 30 by movably operating the operation bar 33, the body member 30 is inserted into a through hole, and the operation bar 33 is movably operated again to project the sampling part 35 from the body member 30. In this state, when the body member 30 is moved along the through hole, the sampling part 35 is bitten into the soil, and the soil can be sampled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil sampling device for soil investigation of a soil layer, and more particularly, to a soil sampling device which has been used for other soil investigations or the like, at regular intervals. The present invention relates to a soil sample collecting device for collecting a sample by dividing a soil layer.

[0002]

2. Description of the Related Art Sampling of soil in each subsoil layer at a construction site, etc. supports the results of a soil bearing test such as a Swedish sounding test and determines the soil bearing capacity based on the geological composition of the land. It is extremely important for sure understanding. A device generally known as a device for collecting this soil sample is disclosed in Japanese Patent Laid-Open No. 09-209350.
It is a soil sampling device known from the Japanese Patent Publication. This soil sampling device, as disclosed in the same publication, is inserted into the penetrating hole of the penetrating rod that remains after conducting a test such as Swedish sounding test to penetrate the penetrating rod into the ground and investigate the ground bearing capacity of the land. It has a structure to be used. Explaining only the main part here, the sampling device includes a long pipe-shaped main body tube member, a sample collection tube that can be retracted from an opening formed in a side portion of the main body tube member, and a sample collection tube. A biasing means for biasing the tube so as to project from the opening, a wire for rocking the sampling tube to be housed in the main tube member, and a lever provided to operate the wire from the ground. And a member.

When collecting a soil sample, the lever member is operated to pull the wire and the sample collecting tube is housed in the main body tube member to eliminate the protruding portion from the main body tube member. Insert into the penetration hole. When the lever member is operated again to loosen the wire, the urging means causes the sampling tube to project from the main body tube member and come into contact with the wall surface (soil surface) of the penetration hole. When the device is moved so as to be pulled out in this state, the sampling pipe bites into the soil, and the soil sample is accommodated in the sampling pipe through the opening. In this way, after the soil sample is collected, when the device is pulled out from the penetration hole, the wire is pulled by operating the lever, and the sampling tube is housed in the main body tube member and then pulled out.
As described above, the soil sampling device disclosed in Japanese Patent Laid-Open No. 9-209350 has a structure in which the sample sampling tube can be housed in the main body tube member as necessary, and therefore, the insertion / removal work of the device into / from the penetration hole and the sampling of the soil sample are performed. It has the advantage that work can be done smoothly together.

[0004]

However, the existing penetration holes for inserting the soil sampling device do not always remain in the ideal shape, and in most cases in each soil layer. Depending on the soil quality, water content, etc., it has collapsed and its diameter has decreased. On the other hand, in the above conventional soil sampling device, the wire for swinging the sampling tube is provided outside the main body tube member,
When the device is inserted into the penetration hole, dirt gets caught around the wire and the wire is stuck. For this reason, not only is it impossible to collect a sample of soil, but also when the wire is operated or when the wire is inserted into or removed from the penetration hole of the device, a load is applied to the wire due to the soil being caught, and the wire is cut or cut. Problems such as deformation of the connected parts and damage of the device occur. In order to reduce such a problem, according to Japanese Patent Laid-Open No. 11-117279,
Although a structure has been proposed in which the wire is covered with a protective cover,
When the protective cover is provided in this manner, the resistance of the protective cover when the device is inserted into the penetrating hole is increased by the amount of the protective cover, and it becomes difficult to insert the device into the penetrating hole. In addition, the conventional soil sampling device connects a plurality of main body pipe members to enable a soil sample to be collected to a deep position. The connection form of the main body pipe members is the end of each main body pipe member. It is within the range in which the screw portion formed on the portion is screwed. Therefore, if you try to connect the main body pipe member,
The wire was wound around the main body tube member along with the screwing operation of the main body tube member, and it was substantially impossible to assemble the device once and then add the main body tube member.

[0005]

The present invention has been made in view of the above-mentioned problems, and has a hollow main body member having a handle arranged at one end thereof and a side portion of the main body member arranged at a predetermined interval. An opening, a sample collecting portion swingably arranged on the main body member so that the sample collecting portion can project from and retract through the opening, and a biasing member that biases the sample collecting portion to project from the opening, It is provided movably in the main body member, and is provided with a retracting operation means for retracting the sample collecting unit with respect to the main body member by the movement operation thereof, and an operating means for operating the retracting operation means. It is a thing.

Further, according to the present invention, a hollow main body member having a handle arranged at one end, an opening portion arranged at a side portion of the main body member at a predetermined interval, and a main body member capable of projecting and retracting through the opening portion. A soil sample collecting device comprising a sample collecting section oscillatably arranged in the above, and a retracting operation means for retracting the sample collecting section from the opening, wherein the main body member connects a plurality of sampler sections. It is also characterized in that the connecting portions of these sampler portions are configured to connect the sampler portions so that the projecting / retracting operation means are aligned substantially linearly.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4, reference numeral 10 denotes a soil sample collecting device, which includes an operating unit 20 and the operating unit 2.
The main body member 30 is connected to 0, and the cone 40 is connected to the most front end of the main body member 30.

The operating portion 20 has a T-shaped hollow handle 21, an operating bar 22 movably inserted through the inside of the handle 21, and an operating bar 22.
And a lever member 23 for operating. In addition, the body member 30 includes a plurality of sampler parts 31, 31.
.. are connected. Each of these sampler parts 3
1 has the same structure, and the detailed structure of one of them will be described here.

The sampler portion 31 is shaken by being connected to a main body tube 32 made of a hollow tubular member, an operation bar 33 movably provided in the main body tube 32, and a pin 34 on the main body tube 32. Sampling part 35 movably supported
And a biasing member 36 that biases the sample collecting portion 35 so as to project to the outside from the opening 32a formed in the main body tube 32. In this embodiment, the urging member 36 is a leaf spring.

The sampling portion 35 includes a holder 37 connected to the body tube 32 by a pin 34, and the holder 37.
And a collection tube 38 fitted to the. Holder 37
Is a hollow shape that is open at one end side protruding from the main body tube 32, and the sampling tube 38 is attached so as to protrude from the opening of the holder 37. This collection tube 38
Is a transparent cylinder formed of a hard resin material, and is detachably fitted into the holder 37. Further, the other end of the holder 37 is formed on an engaging piece 37a,
Correspondingly, the operation bar 33 has a holder operation portion 33.
a is integrally formed. This holder operation part 33a is
A guide hole 33c capable of accommodating the engagement piece 37a of the holder 37 is formed through the cylindrical portion 33b along the inner peripheral surface of the main body pipe 32. The holder operating portion 33a is normally disposed on the cone 40 side of the holder 37 and separated from the holder 37. However, by moving the operation bar 33 to the handle 21 side, the holder operating portion 33a engages with the guide hole 33c. The part 37a is moved to a position for guiding and accommodating, and the parts 37a and 2b are shown in FIG.
As shown in FIG. 5, the sample collecting section 35 is configured to be rocked and accommodated in the main body tube 32. The above-mentioned 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 collecting section 35, the biasing member 36, and the holder operating section 33a are provided for each of the openings 32a.
Is provided.

As shown in FIGS. 3 (a) and 3 (b), the connection portions C1 and C2 provided at both ends of each sampler portion 31 are recessed in the connection portion C1 facing the operation portion 20 side.
a connecting portion C2 having a shape having a and facing the cone 40 side
Is formed in a shape having a convex portion 31b that matches the concave portion 31a. Each sampler portion 31 is connected by fitting the connection portion C1 of the other sampler portion 31 to the connection portion C1 and screwing the connection portion C2 together.
The sampling portions 35 of each sampler portion 31 are aligned on the same line, and the operation bars 33 are aligned in a straight line. The end of the operation bar 33 has a connecting portion C1,
The operation bar 33 is exposed to C2.
The end portions of are overlapped with each other by engaging the concave portion 31a and the convex portion 31b with each other, and are joined by a screw.
Further, the structure of the connection portion of the operation portion 20 with the main body member 30 is the same as the connection portion C2, and this should be connected to the connection portion C1 of the sampler portion that is continuously provided to the operation portion 20. Thus, the operation bar 22 of the operation section 20 and the operation bar 33 of the most advanced sampler section 31 (the sampler section 31 to which the cone 40 is connected at the tip) are linearly and integrally connected, and these are connected to the lever member 23. It is configured to move integrally with the operation. Further, the structure of the connection portion (not shown) of the cone 40 with the main body member 30 is
The structure is similar to that of the connecting portion C1, and the cone 40 can be connected to the most advanced sampler portion 31 without any trouble. Since the operation bars 22 and 33 are exposed to the outside in each of the connecting portions C1 and C2, a rubber cylindrical cover (not shown) is attached to the connecting portions C1 and C2 during work. The soil is prevented from entering the inside of the sampler section 31.

The soil sampling device 10 is, for example,
When the Swedish sounding test is performed, it is used to take a soil sample of each soil layer by inserting a penetration rod (not shown) into the penetration hole h left after removal. 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. As a result, as shown in FIGS. 1B and 2B, the engaging portion 37a of the holder 37 is guided and housed in the guide hole 33c of the holder operating portion 33a, and the sample collecting portion 3 is held.
5 is swingably housed in the main body pipe 32 against the bias of the biasing member 36.

Next, the soil sampling device 10 is attached to the cone 40.
Insert from the side into the penetration hole h. At this time, since the sample collecting unit 35 is housed in the main body tube 32 as described above, there is no protrusion that hinders the insertion of the device, and the device 10 is inserted into the penetration hole h.
Can be inserted extremely smoothly. After the device 10 is inserted to a predetermined position in the ground in this way, when the lever member 23 is moved back, the operation bars 22 and 33 move to the cone 40.
Move to the side. As a result, the holder operating portion 33a is separated from the holder 37, and as a result, as shown in FIGS. 1 (a) and 2 (a).
As shown in FIG. 3, the sampling portion 35 is pin 3 so that it is projected from the opening 32 a of the main body tube 32 by the urging of the urging member 36.
4 is used as a fulcrum to bring the open end of the sampling tube 38 into contact with the wall surface of the penetration hole h. In this state, when the device 10 is moved in the direction in which it is pulled out from the penetration hole h while holding the handle 21, the open end of the sampling tube 38 bites into the soil, and as shown in FIG. Sample is packed. At this time, if the device 10 is reciprocated several times along the penetration hole h, the soil sample can be more reliably taken into the sampling pipe 38.

After taking the soil sample into the sampling tube 38,
When the device 10 is pulled out from the ground, first, the lever member 23 is operated again to move the operation bars 22 and 33 to the lever member 23 side, and the holder operation unit 33a operates the sample collection unit 35 by the same operation as described above. It is accommodated in the main body pipe 32. As a result, the sampling unit 35 does not hinder the extraction of the device 10, and when the device 10 is extracted, the sampling pipe 38 is caught in the soil to collect an extra soil sample at a different place, or the holder 37 or the like is removed. It is possible to prevent the occurrence of problems such as damage. After taking out the device 10 from the ground in this way, the sampling tube 38 can be removed from the holder 37 to obtain a soil sample at each depth.

As will be 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, which causes the sampling portion 35 to move to the main body tube. It is configured to appear and disappear with respect to 32. As is apparent from this, the lever member 23 constitutes an example of the operating means described in the claims, and the operation bars 22 and 33 are examples of the retractable operating means described in the claims. Is what you make. In addition, the items constituting the present invention, such as the operating means and the retracting operation means, can be replaced with structures other than those described above without departing from the spirit of the invention.

[0016]

According to the present invention, the sampling portion is swung by the operation bar movably provided in the main body tube. Therefore, the soil does not get caught around the operation area of the operation bar, and even after the device is inserted into the penetration hole,
There is an advantage that the operation bar can be surely operated, whereby the sample collecting portion can be properly operated, and the soil sample can be surely collected. Further, there is an advantage that the load on the operation bar is not applied to the operation bar when the operation bar is operated or the device is inserted into or removed from the penetration hole, and the device can be prevented from being damaged. In addition, since there is no part protruding to 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. Further, the present invention has an operating bar for swinging the sample collecting section or a connecting section for connecting each sampler section by aligning a conventional wire or the like means in a substantially linear manner. The operation can be ensured. In particular, when a wire is used to swing the sampling section as in the conventional case, it is possible to prevent the wire from being wound around the sampler section when the sampler section is additionally connected. The sampler portion can be adjusted and the sampler portion can be adjusted to an arbitrary length. Further, by constructing the apparatus with a plurality of sampler sections in this way, the transportation of the apparatus, the handling at the time of collecting soil samples, etc. become very easy.

[Brief description of drawings]

FIG. 1 is an enlarged partial cutaway sectional view of essential parts of a soil sample collecting device according to the present invention.

FIG. 2 is a front view of the soil sampling device according to the present invention.

FIG. 3 is an enlarged perspective view of an essential part of the soil sampling device according to the present invention.

FIG. 4 is an explanatory diagram showing a usage mode of the soil sample collecting device according to the present invention.

[Explanation of symbols]

10 Soil sampling device 20 Operation part 21 handle 22 Operation bar 23 Lever member 30 body member 31 Sampler Department 32 body tube 33 Operation bar 35 Sampling part 36 Biasing member 37 Holder 38 Collection tube 40 cones

Claims (2)

[Claims] 1. A hollow main body member having a handle arranged at one end, an opening portion arranged at a side portion of the main body member at a predetermined interval, and a swingable member with respect to the main body member so as to be retractable from the opening portion. A sample collection unit movably arranged, an urging member for urging the sample collection unit to project from the opening, and a movably provided member in the main body member. A soil sample collecting device, comprising: a retracting and operating means for retracting and retracting from the opening, and an operating means for operating the retractable and operating means. 2. A hollow main body member having a handle arranged at one end, an opening portion arranged at a side portion of the main body member at a predetermined interval, and a swingable body member so as to be retractable from the opening portion. A soil sample collecting device comprising: a sample collecting section arranged in the above, and a projecting / retracting operation means for projecting and retracting the sample collecting section from the opening, wherein the main body member is formed by connecting a plurality of sampler sections, The soil sample collecting device, wherein the connecting portion of the sampler portion is configured to connect the sampler portions so that the projecting / retracting operation means are aligned substantially linearly.