JP2908371B2 - Soil sampling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a soil sampling device.

[0002]

2. Description of the Related Art In a geological survey, a soil sample is collected,
Investigation of the configuration of the ground, that is, investigation of what components are deposited to form the ground is performed. Therefore, when conducting a geological survey, it is required to collect a soil sample while maintaining the layered composition of the ground faithfully.

Conventionally, for this purpose, FIG.
A metal pipe 91-94 having a tip shape as shown in (d) and having a tip diameter of about 2-5 cm, for example, is penetrated into the ground by a surface device provided with a support structure installed on the surface and a penetrating power source. After taking the soil into the pipe, the metal pipe is pulled out together with the soil sample to the ground surface, and a method of collecting a soil sample is often used. The metal pipes 91 to 9 shown in FIGS.
No. 3 is a type that is pressed into the ground. The metal pipe 94 shown in FIG. 6D has a drill shape having a helical groove 94a on its outer periphery, and is a type that is screwed into the ground.

[0004]

The conventional soil sampling apparatus including the examples shown in FIGS. 6 (a) to 6 (d) includes:
There are problems such as the following items.

[0005] There is a need to install large surface equipment to support and penetrate metal pipes on the surface.

[0006] It is necessary to penetrate through holes for sampling from the ground surface.

[0007] Since the investigation depth is limited to the length of the metal pipe, it is disadvantageous for a remote place or a deep depth investigation.

[0008] The shear resistance acting between the metal pipe and the soil may disturb the soil sample.

An object of the present invention is to provide a soil sample collecting apparatus which can easily collect a soil sample at a remote place or at a deep depth with a simple system.

[0010]

According to the present invention, there is provided a soil sample collecting apparatus which is penetrated into the ground to collect a soil sample, and then withdrawn to the surface of the ground. A case having a second end portion having a tapered end directed toward the drawing direction and a withdrawal direction; a mass provided in the case so as to be able to reciprocate in the cylinder axis direction of the case; and a mass provided in the case. A spring capable of biasing the mass in the cylinder axis direction of the case, an actuator provided in the case, and capable of driving the mass, and a movable member of the actuator provided in the case, A hook capable of gripping and releasing, first and second receiving portions provided on first and second end sides of the mass in the case, respectively, and a first end portion. Formed opening And a soil sample collecting unit that collects a soil sample through the hook, the hook, the actuator, and the spring cooperate to grip the mass and generate a predetermined urging force by the spring. , And further, the mass is released, and the first and second receiving portions are impacted by the mass to thereby autonomously move in the penetration direction and the withdrawal direction. A device is obtained.

According to the present invention, there is further provided the above-mentioned soil sample collecting apparatus, comprising a plurality of the above-mentioned masses.

According to the present invention, the soil sample collecting means further comprises a shutter mechanism for collecting / stopping a soil sample near the first end of the case, and further includes a shutter mechanism in the case. The said soil sample collection apparatus characterized by being provided with the accumulation part which accumulates the collected soil sample is obtained.

According to the present invention, the actuator, the hook, and the shutter mechanism of the soil sample collecting means operate on the basis of a predetermined program, and can operate the soil sample at an arbitrary penetration depth. The above-mentioned soil sample collecting device characterized by collecting is obtained.

[0014] According to the present invention, the soil sample collecting means may include an inner tube penetrating in the case in the axial direction at an axial center of the case, and the second end of the case may be connected to the inner tube. And a flexible tube connected to the vicinity of the part and extending to the surface of the ground.

According to the present invention, the soil further comprises a steering means for controlling a moving direction of the apparatus by changing a balance of weight or shape on an imaginary plane perpendicular to the axial direction of the case. A sampling device is obtained.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A soil sampling apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a diagram showing a configuration of a soil sample collecting apparatus according to a first embodiment of the present invention. Referring to FIG. 1, the present sampling device comprises a cone 21 as a generally funnel-shaped first end oriented in the direction of penetration from the ground surface into the ground and a substantially funnel oriented in a drawing direction from the ground to the ground surface. A cylindrical case 10 to which a cone 22 as a second end of the shape is attached, and masses provided in the case 10 so as to be able to reciprocate in the cylinder axis direction of the case 10 and each have a predetermined weight. A coil spring-like spring 50 provided in the case 10 and capable of urging the lower mass 61 and the upper mass 62 in the cylinder axis direction of the case 10; and a lower mass 61 provided in the case 10. An actuator 40 constituted by a linear motor capable of driving the upper mass 62; Gripping the Rowamasu 61 from Pamasu 62 side, Rowamasu 61 and the upper mass 62
Hooks 70 that can be released from each other, a penetration receiving plate 35 as a first receiving portion provided on the cone 21 side with respect to the lower mass 61 in the case 10, and provided on the cone 21 side with respect to the upper mass 62 The receiving ring 31 for penetration as a first receiving part, the receiving ring 32 for extraction provided as a second receiving part provided on the cone 22 side, and an opening formed in the cone 21 (FIG. (Not shown) for collecting a soil sample through the cone 21. The hook 70 has a hook portion 70 a capable of holding and releasing the lower mass 61.
And a lever 70b for releasing the gripping of the lower mass 61 in contact with the upper mass 62. Further, in this example, the mover of the actuator 40 and the upper mass 62 are integrated via the ball spline portion 75 while allowing the case to slide in the axial direction and transmitting the rotation.

In this device, the upper mass 62 grips the lower mass in cooperation with the hook 70, the actuator 40, and the spring 50. By moving the lower mass 61 and the upper mass 62 to the position where they are generated, and releasing the lower mass 61 and the upper mass 62, one of the penetration receiving plate 35, the penetration receiving ring 31, and the extraction receiving ring 32 is moved to the lower mass 61. Alternatively, it is struck by the upper mass 62 and moves autonomously in the penetrating direction or the pulling-out direction.

A hole is formed at the tip of the cone 22. Although not shown, the actuator 40 and the like of the apparatus and a power supply and the like installed on the ground are connected through a cable through the hole.

Next, the operation of the soil sample collecting apparatus will be described.

FIGS. 2A to 2D are views for explaining the operation of the sampling device shown in FIG. 1 at the time of penetration, and FIGS.
(D) is a figure explaining operation at the time of pulling out.

First, the operation at the time of penetration will be described. FIG.
In (a), the lower mass 61 is on the penetration receiving plate 35 and the upper mass 62 is the penetration receiving ring 3.
1, and the lower mass 61 is being held by the hook 70 from the upper mass 62. Thereafter, the lower mass 61 gripped by the hook 70 from the upper mass 62 side moves upward in the drawing, and the lower mass 61 rises to a predetermined position so as to compress and compress the spring 50,
As shown in FIG. 2B, the actuator 40 stops, and the hooks 70a and 70b of the hook 70 are released. After this, the lower mass 61 is
It is urged by the reaction force of 0 and strikes the penetration receiving plate 35 as shown in FIG. On the other hand, the upper mass 62, which has released the grip of the lower mass 61 by the contact of the hook portion 70 b (lever) with the upper mass 62, is urged by the reaction force of the spring 50 pressed and contracted by the lower mass 61, and FIG. After rising to a predetermined position as shown in FIG. 2, the penetration receiving ring 31 is hit by its own weight as shown in FIG. 2D (second shot). Thereafter, the hook 7 on the upper mass 62 side is actuated by the action of the actuator 40.
0 moves downward to grip the lower mass 61, and FIG.
The state shifts to the state of (a).

By repeatedly performing the above steps, the apparatus autonomously penetrates into the ground. During this intrusion,
A soil sample is collected by a soil sample collecting means (not shown) provided in the cone 21. The soil sampling means is provided with a shutter mechanism for collecting / stopping the soil sample.
0, the hook 70, and the shutter mechanism are configured to operate based on a predetermined program, for example, electrically, and by providing a control device that executes the program in the case 10 or on the ground surface, an arbitrary penetration depth can be obtained. It is possible to collect a soil sample at

Further, a steering means for controlling the moving direction of the apparatus by changing the balance of weight or shape on an imaginary plane perpendicular to the axial direction of the case 10 by, for example, moving a weight or a flap with an actuator. If this apparatus is provided, it is possible to collect a soil sample not only at the depth but also at an arbitrary position (multiple points are possible by using the shutter mechanism or the like in combination).

When penetrating into the ground, the force required to break the soil at the tip of the cone 21 and the shear frictional force generated between the outer surface of the entire apparatus including the cone 21 and the soil penetrate. It becomes resistance.

Next, the operation at the time of pulling out will be described.

After collecting the desired soil sample, FIG.
In the state shown in (b), that is, in a state where the lower mass 61 is at a predetermined upper position, the lower mass 61 is fixed by a hook (not shown). When the lower mass 61 is fixed at the upper position, the spring 50 is pressed and contracted, so that the upper mass 62 is supported upward by the spring 50 as shown in FIG. In FIG. 3B, the spring 50 is compressed by the action of the moving element of the actuator 40 in a state where the hook 70 on the upper mass 62 grips the lower mass 61. Thereafter, the actuator 40 stops, and the hook portions 70a and 70b are released. When the hook portions 70a and 70b are released, the upper mass 62 is released upward together with the movable member of the actuator 40 by the reaction force of the compressed spring 50, and as shown in FIG. Hit 32 (1st shot only). Thereafter, the state shown in FIG. 3D is established, and the moving element of the actuator 40 moves downward together with the upper mass 62, and shifts to FIGS. 3A and 3B.

By repeatedly performing the above steps, the present apparatus autonomously advances (pulls out) from underground to the surface of the ground.

FIG. 4 (a) is a conceptual diagram when the present soil sample collecting device is penetrated, and FIG. 4 (b) is a conceptual diagram when the present soil sample collecting device is withdrawn.

[Second Embodiment] FIG. 5 is a diagram showing a configuration of a soil sample collecting apparatus according to a second embodiment of the present invention. In the figure, the same parts as in the first embodiment or the same parts are denoted by the same reference numerals as in FIG. Referring to FIG. 5, the present sampling apparatus opens as a soil sample collecting means at a cone 21 ′ on the penetration side of case 10 ′,
A sample distribution tube 81 as a tube in the case that penetrates through the inside of the case 10 ′ in the axial direction at the center of the shaft.
And a flexible tube 82 connected to the sample distribution tube 81 in the vicinity of the cone 22 'on the withdrawal side of the case 10' and extending to the ground surface (not shown).
Further, in the soil sample collecting apparatus according to the second embodiment, the sample distribution tube 81 is provided in the case 10 '.
In order to secure a place for disposing, the penetration receiving ring 31 ', the extraction ring 32', the penetration receiving ring 35 ', the actuator 4
0 ', a spring 50', a lower mass 61 ', an upper mass 62', and a hook 70 '.

The soil sample collecting device according to the second embodiment can continuously collect a soil sample when the device penetrates autonomously into the ground. Incidentally, also in the present embodiment, a shutter mechanism can be provided at the tip of the sample distribution tube 81, or a program operation type may be used. Further, a steering means may be provided.

[0032]

The soil sample collecting apparatus according to the present invention has the following features.
A soil sample collection device, which is penetrated into the ground to collect a soil sample and then withdrawn to the surface, comprising a first end having a tapered shape directed in the direction of penetration and a second end having a tapered shape directed in the direction of withdrawal. A case having an end, a mass provided in the case so as to be able to reciprocate in the cylinder axis direction of the case, a spring provided in the case, and capable of biasing the mass in the cylinder axis direction of the case; An actuator capable of driving the mass, a hook provided on the actuator of the actuator within the case, capable of gripping and releasing the mass, and first and second end sides of the mass within the case that are closer to the first and second ends. A first and a second receiving portion provided in each of the above, and a soil sample collecting means for collecting a soil sample through an opening formed in the first end, a hook,
The actuator and the spring cooperate to grip the mass, move the mass to a position where a predetermined biasing force is generated by the spring, release the mass, and cause the first and second receiving portions to be moved by the mass. By hitting,
Since it moves autonomously in the direction of intrusion and in the direction of withdrawal, it is possible to easily collect soil samples at remote locations and at deep depths with a simple system.

Therefore, it is possible to carry out a geological survey in a place where it is difficult to install a large system such as a lunar surface or a seabed or where it is difficult for an operator to monitor and work.

Further, work for burying electric wires and the like in the ground,
It can be applied to fields such as mine location surveys in minefields.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a soil sample collecting device according to a first embodiment of the present invention.

FIGS. 2A to 2D are diagrams for explaining the operation (penetration operation) of the soil sample collecting apparatus shown in FIG.

3 (a) to 3 (d) are diagrams for explaining the operation (pull-out operation) of the soil sample collecting device shown in FIG.

FIGS. 4 (a) and (b) are conceptual diagrams showing a penetration mode and a withdrawal mode of the soil sample collecting apparatus shown in FIG.

FIG. 5 is a diagram showing a configuration of a soil sample collecting device according to a second embodiment of the present invention.

FIGS. 6A to 6D are views showing a part of a conventional soil sample collecting apparatus.

[Explanation of symbols]

 10, 10 'Case 21, 21', 22, 22 'Cone 31, 31' Penetration receiving ring 32, 32 'Extraction receiving ring 35 Penetrating receiving plate 35' Penetrating receiving ring 40, 40 ' Actuator 50, 50 'Spring 61, 61' Lower mass 62, 62 'Upper mass 70, 70' Hook 70a, 70b Hook 75 Ball spline 81 Sample distribution tube 82 Flexible tube 91-94 Metal pipe 94a Spiral groove

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01N 1/08 E02D 1/04

Claims (6)

(57) [Claims] Claims 1. A soil sample collection device that is penetrated into the ground to collect a soil sample, and then withdrawn to the surface, wherein the first end portion has a tapered shape directed in the intrusion direction and a tapered shape in the pullout direction. A case having a second end having a shape, a mass provided in the case so as to be able to reciprocate in a cylinder axis direction of the case, and a mass provided in the case;
A spring capable of biasing the mass in the cylinder axis direction of the case, an actuator provided in the case, and an actuator capable of driving the mass, and a movable element of the actuator provided in the case; Hooks that can be gripped and released, first and second receiving portions provided at first and second end sides of the mass in the case, respectively, and formed at the first end portion Soil sample collecting means for collecting a soil sample through the opened opening,
The hook, the actuator, and the spring cooperate to grip the mass, move the mass to a position where a predetermined urging force is generated by the spring, and further release the mass, And a second sample receiving device that is autonomously moved in a penetration direction and a pull-out direction by hitting the second receiving portion with the mass. 2. The soil sample collecting device according to claim 1, wherein a plurality of the masses are provided. 3. The soil sample collecting means includes a shutter mechanism for collecting / stopping a soil sample near the first end of the case, and a soil sample collected in the case. The soil sampling device according to claim 1 or 2, further comprising a storage unit for storing the soil sample. 4. The actuator, the hook, and the shutter mechanism of the soil sample collecting means are operated based on a predetermined program, and collect a soil sample at an arbitrary penetration depth. The soil sample collection device according to claim 3, wherein 5. The soil sample collecting means is connected to a tube in a case penetrating axially through the inside of the case at a central portion of the case, and connected to the tube in the case near the second end of the case. The soil sampling apparatus according to claim 1, further comprising a flexible tube extending to the surface of the ground. 6. A steering device according to claim 1, further comprising steering means for controlling a moving direction of the device by changing a balance of weight or shape on an imaginary plane perpendicular to the axial direction of the case. A soil sample collecting apparatus according to any one of the above.