JP2008261166A - Geological survey device - Google Patents

Geological survey device Download PDF

Info

Publication number
JP2008261166A
JP2008261166A JP2007105404A JP2007105404A JP2008261166A JP 2008261166 A JP2008261166 A JP 2008261166A JP 2007105404 A JP2007105404 A JP 2007105404A JP 2007105404 A JP2007105404 A JP 2007105404A JP 2008261166 A JP2008261166 A JP 2008261166A
Authority
JP
Japan
Prior art keywords
weight
magnet
attracted
ground
geological survey
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2007105404A
Other languages
Japanese (ja)
Inventor
Kazuichi Inoue
和一 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2007105404A priority Critical patent/JP2008261166A/en
Publication of JP2008261166A publication Critical patent/JP2008261166A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a geological survey device by which a penetration rod can be quickly and efficiently driven by a free fall of a weight, and reduction in size, weight and manufacturing cost of the geological survey device can be materialized by simplifying the structure of the whole device. <P>SOLUTION: A device body 2 comprising the geological survey device 1 is held in a standing posture and the penetration rod 4 vertically mounted on a cylindrical housing 3 of the device body 2 is inserted into the ground C. The weight 5 fallen to a weight lowered position B1 in the cylindrical housing 3 is attracted by a permanent magnet 6. Then, the weight 5 attracted by the permanent magnet 6 is raised to a weight raised position A1 from the weight lowered position B1 by a magnet lifting device 7. The weight 5 attracted by the permanent magnet 6 is brought into contact with a contact part 3c of the weight lowered position B1 and is allowed to fall freely, so that the penetration rod 4 is driven into the ground C by the impact generated by the free fall of the weight 5. Based on the length of penetration of the penetration rod 4 which is actually driven, predetermined items related to the geologic conditions like hardness/softness of the ground, degree of compaction, and ground supporting strength are surveyed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、例えば地盤の硬軟、締まり具合、地盤支持強度等の地盤に関する所定項目を調査する地質調査装置に関する。   The present invention relates to a geological survey device that surveys predetermined items related to the ground, such as the hardness of the ground, the tightness, and the ground support strength.

前記地盤に関する所定項目を調査する地質調査装置としては、例えばボーリングロッドを、打撃用ウエイトの自由落下時に生じる打撃加重により地盤内に打ち込んで調査する地盤貫入試験装置がある(特許文献1参照)。この地盤貫入試験装置は、吊上げ機構のフック部を打撃用ウエイト上部に係止した後、吊上げ機構全体を、リニア駆動機構により所望する高さに上昇させる。吊上げ機構全体を所望する高さに上昇停止した後、フック部の係止を解除して、打撃用ウエイトを所望する高さから自由落下させ、その落下時に生じる打撃加重によりボーリングロッドを地盤内に打ち込むものもある。
特開2001−348858号公報
An example of a geological surveying device that surveys predetermined items related to the ground is a ground penetration testing device that surveys by drilling a boring rod into the ground by a striking load generated when the striking weight is freely dropped (see Patent Document 1). In this ground penetration test apparatus, after the hook portion of the lifting mechanism is locked to the upper portion of the impact weight, the entire lifting mechanism is raised to a desired height by the linear drive mechanism. After lifting and stopping the entire lifting mechanism to the desired height, the hook part is unlocked and the impact weight is allowed to fall freely from the desired height, and the boring rod is moved into the ground by the impact load generated during the fall. Some of them are driven in.
JP 2001-348858 A

前記地盤貫入試験装置は、吊上げ機構全体を所望する高さに上昇させる際に、吊上げ機構のフックを打撃用ウエイト上部に係止する。打撃用ウエイトを自由落下させる際には、打撃用ウエイト上部からフック部を離脱させて係止解除するので、フックを係止する動作及び係止を解除する動作に時間が掛かる。また、フック以外の方法として、例えば爪をウエイトに係止するか、ハンガーでウエイトを保持する等して所望する高さに上昇する吊上げ機構があるが、前述と同様に、爪を係止する動作及びハンガーで保持する動作に時間が掛かるため、ボーリングロッドを地盤に打ち込む動作が迅速に行えない。   The ground penetration test device locks the hook of the lifting mechanism to the upper portion of the impact weight when raising the entire lifting mechanism to a desired height. When the impact weight is allowed to fall freely, the hook portion is released from the upper portion of the impact weight and unlocked, so that it takes time to engage and release the hook. As a method other than the hook, for example, there is a lifting mechanism that raises the nail to a desired height by locking the nail to the weight or holding the weight with a hanger, but the nail is locked as described above. Since the operation and the operation of holding with the hanger take time, the operation of driving the boring rod into the ground cannot be performed quickly.

この発明は前記問題に鑑み、重錘の自由落下による貫入ロッドの打ち込み動作が迅速且つ効率的に行え、装置全体の構成を簡素化して、地質調査装置の小型化及び軽量化、製作費の低減を図ることができる地質調査装置の提供を目的とする。   In view of the above problems, the present invention can quickly and efficiently drive the penetrating rod due to the free fall of the weight, simplify the overall configuration of the device, reduce the size and weight of the geological survey device, and reduce the production cost. The purpose is to provide a geological survey device that can perform the above.

請求項1に記載した発明の地質調査装置は、重錘を所定高さから自由落下させた際に生じる衝撃により、装置本体に垂設した貫入ロッドを地盤に打ち込んで地質の所定項目を調査する地質調査装置であって、前記貫入ロッドと同一軸芯上に配置された重錘を、該貫入ロッドが地盤に対して略垂直に打ち込まれる方向に向けて落下ガイドする重錘ガイド手段と、前記重錘を吸着するのに必要な磁力に励磁された磁石を、該磁石で吸着した重錘が所定高さに上昇される磁石上昇位置と、前記自由落下した重錘が吸着される磁石下降位置との間で移動する磁石移動手段と、前記磁石の磁力に抗して、前記磁石上昇位置に上昇された磁石から該磁石に吸着された重錘を分離する重錘分離手段と、前記重錘の自由落下により地盤に打ち込まれた貫入ロッドの貫入長さを測定する貫入長さ測定手段と、前記磁石移動手段の駆動及び停止と、前記貫入長さ測定手段の測定動作を制御する制御手段とを備えたことを特徴とする。   The geological survey device according to the first aspect of the present invention investigates a predetermined item of geology by driving a penetrating rod suspended from the main body of the device into the ground by an impact generated when the weight is freely dropped from a predetermined height. A geological survey device, wherein a weight guide means for guiding a weight placed on the same axis as the penetrating rod to drop in a direction in which the penetrating rod is driven substantially perpendicular to the ground, and A magnet that is excited by a magnetic force required to attract the weight, a magnet rising position where the weight attracted by the magnet is raised to a predetermined height, and a magnet descending position where the free fallen weight is attracted A magnet moving means that moves between the magnet, a weight separating means that separates the weight attracted to the magnet from the magnet raised to the magnet rising position against the magnetic force of the magnet, and the weight Intrusion lock driven into the ground by free fall And penetration length measuring means for measuring the penetration length of the driving and stopping of said magnet moving means, characterized in that a control means for controlling the measurement operation of the penetration length measuring means.

この発明によると、貫入ロッドの先端を所望する長さ地盤に貫入するか、地盤に接地した後、制御手段により磁石移動手段を駆動して、磁石を、磁石昇降手段により磁石下降位置へ移動させ、重錘下降位置に自由落下された重錘を磁石で吸着する。重錘が吸着された磁石を、磁石昇降手段により磁石上昇位置に移動させる。この後、磁石の磁力に抗して、重錘分離手段により磁石から重錘を強制的に分離して自由落下させ、重錘の自由落下時に生じる衝撃により貫入ロッドを地盤に打ち込む。また、貫入ロッドと同一軸芯上に配置された重錘を、重錘ガイド手段により貫入ロッドが地盤に対して略垂直に打ち込まれる方向に向けて落下ガイドするので、重錘の自由落下時に生じる衝撃が、貫入ロッドが地盤に対して略垂直に打ち込まれる方向に対して加えられる。重錘を所望する回数だけ自由落下させて、貫入ロッドを地盤に打ち込んだ後、制御手段により磁石移動手段を停止させ、地盤に打ち込まれた貫入ロッドの貫入長さを貫入長さ測定手段により測定するものである。   According to the present invention, after the tip of the penetrating rod penetrates the ground of a desired length or is grounded to the ground, the magnet moving means is driven by the control means, and the magnet is moved to the magnet lowered position by the magnet lifting / lowering means. The weight that is freely dropped to the weight lowering position is adsorbed by a magnet. The magnet to which the weight is attracted is moved to the magnet raised position by the magnet lifting / lowering means. Thereafter, against the magnetic force of the magnet, the weight separating means forcibly separates the weight from the magnet and causes it to fall freely, and the penetrating rod is driven into the ground due to the impact generated when the weight is free dropped. Further, since the weight arranged on the same axis as the penetrating rod is guided to drop in the direction in which the penetrating rod is driven almost perpendicularly to the ground by the weight guide means, it occurs when the weight freely falls. The impact is applied to the direction in which the penetrating rod is driven substantially perpendicular to the ground. After dropping the weight as many times as desired and driving the penetrating rod into the ground, the magnet moving means is stopped by the control means, and the penetrating length of the penetrating rod driven into the ground is measured by the penetrating length measuring means. To do.

前記磁石は、例えば重錘を吸着するのに必要な磁力に励磁された永久磁石等で構成することができる。また、重錘ガイド手段は、例えば重錘が上下移動自在に収容された筒状収容部、或いは、重錘が上下移動自在に取り付けられた棒状又は軸状の案内部材等で構成することができる。また、磁石移動手段は、例えば磁石に連結されたワイヤと、ワイヤを巻回するプーリと、プーリを巻取り方向と巻戻し方向へ回転するモータを備えた磁石昇降装置、或いは、磁石が取り付けられたチェーン等の無端帯を周回方向へ回転する磁石周回装置等で構成することができる。また、重錘分離手段は、例えば所定高さに上昇された重錘に対して当接される段部、突起等の当接部で構成することができる。また、貫入長さ測定手段は、例えば超音波センサ、光電センサ等の距離検出センサで構成することができる。また、制御手段は、例えばPIC(Peripheral Interface Controller=周辺機器接続制御用IC)、CPU、ROM、RAMを備えた制御回路等の制御装置で構成することができる。   The magnet can be constituted by a permanent magnet excited by a magnetic force necessary for attracting a weight, for example. Further, the weight guide means can be constituted by, for example, a cylindrical housing portion in which the weight is accommodated so as to be movable up and down, or a rod-like or shaft-like guide member in which the weight is attached so as to be movable up and down. . The magnet moving means is, for example, a magnet lifting / lowering device having a wire connected to the magnet, a pulley for winding the wire, and a motor for rotating the pulley in the winding direction and the rewinding direction, or a magnet is attached. The endless belt such as a chain can be constituted by a magnet rotating device or the like that rotates in the rotating direction. Further, the weight separating means can be configured by a contact portion such as a stepped portion or a protrusion that is in contact with the weight raised to a predetermined height, for example. The penetration length measuring means can be constituted by a distance detection sensor such as an ultrasonic sensor or a photoelectric sensor. The control means can be configured by a control device such as a control circuit including a PIC (Peripheral Interface Controller = peripheral device connection control IC), a CPU, a ROM, and a RAM.

請求項2に記載した発明の地質調査装置は、重錘を所定高さから自由落下させた際に生じる衝撃により、装置本体に垂設した貫入ロッドを地盤に打ち込んで地質の所定項目を調査する地質調査装置であって、前記貫入ロッドと同一軸芯上に配置された重錘を、該貫入ロッドが地盤に対して略垂直に打ち込まれる方向に向けて落下ガイドする重錘ガイド手段と、前記重錘を吸着するのに必要な磁力に励磁される磁石を、該磁石で吸着した重錘が所定高さに上昇される磁石上昇位置と、前記自由落下した重錘が吸着される磁石下降位置との間で移動する磁石移動手段と、前記磁石で吸着した重錘が所定高さに上昇された際に前記磁石の励磁を解除し、前記自由落下された重錘を吸着する際に前記磁石を励磁する励磁制御手段と、前記重錘の自由落下により地盤に打ち込まれた貫入ロッドの貫入長さを測定する貫入長さ測定手段と、前記磁石移動手段の駆動及び停止と、前記貫入長さ測定手段の測定動作を制御する制御手段とを備えたことを特徴とする。   The geological survey device according to the second aspect of the present invention investigates a predetermined item of geology by driving a penetrating rod suspended from the device main body into the ground by an impact generated when the weight is freely dropped from a predetermined height. A geological survey device, wherein a weight guide means for guiding a weight placed on the same axis as the penetrating rod to drop in a direction in which the penetrating rod is driven substantially perpendicular to the ground, and A magnet excited by a magnetic force necessary to attract the weight, a magnet rising position where the weight attracted by the magnet is raised to a predetermined height, and a magnet descending position where the free-falling weight is attracted A magnet moving means that moves between the magnet and the magnet released when the weight adsorbed by the magnet is raised to a predetermined height, and the magnet is released when the free-falling weight is adsorbed Excitation control means for exciting the weight and free fall of the weight A penetrating length measuring means for measuring the penetrating length of the penetrating rod driven into the ground, driving and stopping of the magnet moving means, and a control means for controlling the measuring operation of the penetrating length measuring means. It is characterized by that.

この発明によると、貫入ロッドの先端を所望する長さ地盤に貫入するか、地盤に接地した後、制御手段により磁石移動手段を駆動して、磁石を、磁石昇降手段により磁石下降位置へ移動させる。重錘を吸着する際に磁石を励磁制御手段で励磁して、重錘下降位置に自由落下された重錘を磁石で吸着する。重錘が吸着された磁石を、磁石昇降手段により磁石上昇位置に移動させる。磁石で吸着した重錘が所定高さに上昇された際に、磁石の励磁を励磁制御手段で解除して、磁石から重錘を分離して自由落下させ、重錘の自由落下時に生じる衝撃により貫入ロッドを地盤に打ち込む。また、貫入ロッドと同一軸芯上に配置された重錘を、重錘ガイド手段により貫入ロッドが地盤に対して略垂直に打ち込まれる方向に向けて落下ガイドするので、重錘の自由落下時に生じる衝撃が、貫入ロッドが地盤に対して略垂直に打ち込まれる方向に対して加えられる。重錘を所望する回数だけ自由落下させて、貫入ロッドを地盤に打ち込んだ後、制御手段により磁石移動手段を停止させ、地盤に打ち込まれた貫入ロッドの貫入長さを貫入長さ測定手段により測定するものである。   According to the present invention, after the tip of the penetrating rod penetrates the ground of a desired length or is grounded, the magnet moving means is driven by the control means, and the magnet is moved to the magnet lowered position by the magnet lifting / lowering means. . When the weight is attracted, the magnet is excited by the excitation control means, and the weight that is freely dropped to the weight lowering position is attracted by the magnet. The magnet to which the weight is attracted is moved to the magnet raised position by the magnet lifting / lowering means. When the weight adsorbed by the magnet is raised to a predetermined height, the excitation of the magnet is released by the excitation control means, the weight is separated from the magnet and allowed to fall free, and the impact generated when the weight falls freely Drive the penetrating rod into the ground. Further, since the weight arranged on the same axis as the penetrating rod is guided to drop in the direction in which the penetrating rod is driven almost perpendicularly to the ground by the weight guide means, it occurs when the weight freely falls. The impact is applied to the direction in which the penetrating rod is driven substantially perpendicular to the ground. After dropping the weight as many times as desired and driving the penetrating rod into the ground, the magnet moving means is stopped by the control means, and the penetrating length of the penetrating rod driven into the ground is measured by the penetrating length measuring means. To do.

前記磁石は、例えば重錘を吸着する際に励磁され、重錘を落下させる際に励磁が解除される電磁石等で構成することができる。また、励磁制御手段は、例えばマグネットスイッチ、近接スイッチ、光電スイッチ、リミットスイッチ等の磁石を検出する検出スイッチと、その検出スイッチから出力される検出信号に基づいて、磁石の励磁を制御する制御装置等で構成することができる。   For example, the magnet may be an electromagnet that is excited when the weight is attracted and is de-energized when the weight is dropped. Further, the excitation control means includes, for example, a detection switch that detects a magnet such as a magnet switch, a proximity switch, a photoelectric switch, and a limit switch, and a control device that controls excitation of the magnet based on a detection signal output from the detection switch. Or the like.

請求項3に記載した発明の地質調査装置は、前記請求項1又は2に記載の構成と併せて、前記重錘ガイド手段を、前記重錘の収容が許容される大きさ及び形状の筒状収容部で構成したことを特徴とする。   A geological survey device according to a third aspect of the invention is a cylindrical shape having a size and a shape that allows the weight to be accommodated together with the configuration according to the first or second aspect. It is characterized by comprising a housing part.

この発明によると、筒状収容部に収容された重錘を、筒状収容部内面に沿って貫入ロッドが地盤に対して略垂直に打ち込まれる方向に向けて落下ガイドする。   According to this invention, the weight housed in the tubular housing portion is guided to drop along the inner surface of the tubular housing portion in the direction in which the penetrating rod is driven substantially perpendicular to the ground.

請求項4に記載した発明の地質調査装置は、前記請求項1に記載の構成と併せて、前記重錘分離手段を、前記磁石移動手段により重錘上昇位置に上昇された重錘に対して当接される当接部で構成したことを特徴とする。   A geological survey device according to a fourth aspect of the present invention is the geological survey device according to the first aspect, wherein the weight separating means is connected to the weight raised to the weight rising position by the magnet moving means. It is characterized by comprising an abutting portion that abuts.

この発明によると、磁石で吸着した重錘を、磁石移動手段により重錘下降位置から重錘上昇位置に上昇させて当接部に当接し、その当接時に生じる反力により、磁石の磁力に抗して、磁石から重錘を強制的に分離して自由落下させる。前記当接部は、例えば段部、突起等で構成することができる。   According to the present invention, the weight attracted by the magnet is raised from the weight lowered position to the weight raised position by the magnet moving means and brought into contact with the contact portion, and the reaction force generated at the time of contact causes the weight of the magnet to be increased. In contrast, the weight is forcibly separated from the magnet and allowed to fall freely. The abutting portion can be constituted by, for example, a stepped portion, a protrusion, or the like.

請求項5に記載した発明の地質調査装置は、前記請求項1〜4のいずれか一つに記載の構成と併せて、前記磁石移動手段を、前記磁石で吸着した重錘が所定高さに上昇される磁石上昇位置と、前記自由落下した重錘が吸着される磁石下降位置とに前記磁石を昇降する磁石昇降手段で構成したことを特徴とする。   A geological survey device according to a fifth aspect of the present invention is the geological survey device according to any one of the first to fourth aspects, wherein the weight of the magnet moving means is fixed to a predetermined height by the magnet moving means. It is characterized by comprising a magnet raising / lowering means for raising and lowering the magnet to a magnet raising position to be raised and a magnet lowering position to attract the free fallen weight.

この発明によると、磁石を、磁石昇降手段により磁石下降位置に下降させて、重錘下降位置に自由落下された重錘を磁石で吸着する。重錘が吸着された磁石を、磁石昇降手段により磁石上昇位置に上昇させるので、貫入ロッドと同一軸芯上に配置された重錘を、貫入ロッドが地盤に対して略垂直に打ち込まれる方向に向けて昇降することができる。前記磁石昇降手段は、例えば磁石に連結されたワイヤと、ワイヤを巻回するプーリと、プーリを巻取り方向と巻戻し方向へ回転するモータを備えた磁石昇降装置等で構成することができる。   According to the present invention, the magnet is lowered to the magnet lowered position by the magnet raising / lowering means, and the weight that is freely dropped to the weight lowered position is attracted by the magnet. Since the magnet attracted by the weight is raised to the magnet rising position by the magnet lifting / lowering means, the weight placed on the same axis as the penetrating rod is placed in a direction in which the penetrating rod is driven substantially perpendicular to the ground. Can be raised and lowered. The magnet lifting / lowering means can be composed of, for example, a magnet lifting / lowering device provided with a wire connected to a magnet, a pulley for winding the wire, and a motor for rotating the pulley in the winding direction and the unwinding direction.

請求項6に記載した発明の地質調査装置は、前記請求項1〜4のいずれか一つに記載の構成と併せて、前記磁石移動手段を、前記自由落下した重錘が吸着される重錘下降位置から、該磁石で吸着した重錘が自由落下される重錘上昇位置に向けて前記磁石を周回移動する磁石周回手段で構成したことを特徴とする。   A geological survey device according to a sixth aspect of the present invention is the weight according to any one of the first to fourth aspects, in which the magnet moving means is attached to the free-falling weight. It is characterized by comprising a magnet rotating means for moving the magnet around from a lowered position to a weight rising position where the weight attracted by the magnet is freely dropped.

この発明によると、磁石を、磁石周回手段により重錘下降位置から重錘上昇位置へ周回移動させ、重錘下降位置に自由落下された重錘を磁石で吸着して重錘上昇位置へ上昇させるので、例えばモータ等の駆動手段を正逆回転するか駆動及び停止する必要がない。前記磁石周回手段は、例えば磁石が取り付けられたループ状のチェーンと、チェーンが掛け渡された上下のスプロケットと、スプロケットを回転するモータ等を備えた磁石周回装置等で構成することができる。   According to the present invention, the magnet is moved around from the weight lowered position to the weight raised position by the magnet turning means, and the weight that is freely dropped to the weight lowered position is attracted by the magnet and raised to the weight raised position. Therefore, it is not necessary to rotate the driving means such as a motor forward or reverse, or to drive and stop the driving means. The magnet turning means can be constituted by, for example, a magnet turning device including a loop-like chain to which a magnet is attached, upper and lower sprockets around which the chain is wound, a motor for rotating the sprocket, and the like.

この発明によれば、磁石で吸着した重錘を重錘上昇位置へ上昇させ際に、磁石から重錘を分離して自由落下させた際に生じる衝撃により貫入ロッドを地盤へ打ち込むので、従来例のようにフックや爪を重錘に係止及びその係止を解除するか、ハンガーで保持及びその保持を解除する等の動作や機構が不要であり、重錘の自由落下による貫入ロッドの打ち込み動作が迅速且つ効率的に行える。また、装置全体の構成が簡素化されるため、地質調査装置の小型化及び軽量化、製作費の低減を図ることができる。   According to this invention, when the weight adsorbed by the magnet is raised to the weight lifting position, the penetrating rod is driven into the ground due to the impact generated when the weight is separated from the magnet and freely dropped. It is not necessary to operate the hook or claw to the weight and release the lock, or to hold it with the hanger and to release the hold. Operation can be performed quickly and efficiently. Moreover, since the structure of the whole apparatus is simplified, the geological survey apparatus can be reduced in size and weight, and the production cost can be reduced.

この発明は、重錘の自由落下による貫入ロッドの打ち込み動作が迅速且つ効率的に行え、装置全体の構成を簡素化して、地質調査装置の小型化及び軽量化、製作費の低減を図ることができるという目的を、磁石で吸着した重錘を重錘上昇位置へ上昇させ際に、磁石から重錘を分離して自由落下させた際に生じる衝撃により貫入ロッドを地盤に打ち込むことで達成した。   According to the present invention, the operation of driving the penetrating rod due to the free fall of the weight can be performed quickly and efficiently, the structure of the entire apparatus can be simplified, the geological survey apparatus can be reduced in size and weight, and the production cost can be reduced. The purpose of being able to do this was achieved by driving the penetrating rod into the ground by the impact generated when the weight adsorbed by the magnet was raised to the weight lifting position and the weight was separated from the magnet and dropped freely.

この発明の一実施例を以下図面に基づいて詳述する。   An embodiment of the present invention will be described in detail with reference to the drawings.

図面は、重錘の自由落下時に生じる衝撃により貫入ロッドを地盤に打ち込んで所定項目を調査する地質調査装置を示し、図1〜図4に於いて、この地質調査装置1は、箱形状に形成された装置本体2の下面側中央部に、上端部と下端部が閉塞された筒状収容部3を下方に向けて略垂直に固定している。また、筒状収容部3の下端側中心部に、所定長さに形成された貫入ロッド4を下方に向けて略垂直に固定している。また、筒状収容部3内に、貫入ロッド4を打ち込むのに必要な衝撃を付与する重錘5と、重錘5を上昇するのに必要な磁力に励磁された永久磁石6を上下移動自在に収容している。   The drawings show a geological survey device for investigating a predetermined item by driving a penetrating rod into the ground due to an impact caused by a free fall of a weight. In FIGS. 1 to 4, the geological survey device 1 is formed in a box shape. A cylindrical housing portion 3 whose upper end and lower end are closed is fixed substantially vertically downward at the center on the lower surface side of the apparatus main body 2 that has been formed. In addition, a penetrating rod 4 formed in a predetermined length is fixed to the central portion of the lower end side of the cylindrical housing portion 3 in a substantially vertical direction downward. In addition, a weight 5 for applying an impact necessary for driving the penetrating rod 4 into the cylindrical housing 3 and a permanent magnet 6 excited by a magnetic force necessary for raising the weight 5 are movable up and down. Is housed in.

つまり、筒状収容部3に収容された重錘5を永久磁石6で吸着した後、永久磁石6で吸着した重錘5を、後述する磁石昇降装置7により筒状収容部3内に設定した下位側の重錘下降位置B1から上位側の重錘上昇位置A1に上昇させる。重錘上昇位置A1において、永久磁石6から重錘5を強制的に分離して自由落下させ、その自由落下時に生じる衝撃により貫入ロッド4を地盤Cに打ち込んで地質の所定項目を調査するものである。   That is, after the weight 5 housed in the cylindrical housing portion 3 is attracted by the permanent magnet 6, the weight 5 attracted by the permanent magnet 6 is set in the cylindrical housing portion 3 by the magnet lifting and lowering device 7 described later. The weight is lowered from the lower weight lowering position B1 to the upper weight lifting position A1. At the weight rising position A1, the weight 5 is forcibly separated from the permanent magnet 6 and freely dropped, and the penetration rod 4 is driven into the ground C by the impact generated at the time of the free fall to investigate predetermined items of geology. is there.

筒状収容部3に収容された重錘5と永久磁石6は、貫入ロッド4と同一軸芯上に配置され、筒状収容部3の内面に沿って貫入ロッド4が地盤Cに対して略垂直に打ち込まれる方向に向けて昇降ガイドされる。なお、貫入ロッド4の先端部は、先端に向けて徐々に細くなる形状(例えば尖鋭形状)に形成している。   The weight 5 and the permanent magnet 6 accommodated in the cylindrical accommodating portion 3 are disposed on the same axis as the penetrating rod 4, and the penetrating rod 4 is substantially the same as the ground C along the inner surface of the cylindrical accommodating portion 3. It is guided up and down in the direction of being driven vertically. In addition, the front-end | tip part of the penetration rod 4 is formed in the shape (for example, sharp shape) which becomes thin gradually toward a front-end | tip.

筒状収容部3は、重錘5が収容される下側収容部3aと、永久磁石6のみが収容される上側収容部3bを上下に形成している。上側収容部3bよりも横断面が大きい下側収容部3aは、重錘5の収容が許容される大きさ及び形状に形成されている(図1参照)。また、下側収容部3aよりも横断面が小さい上側収容部3bは、永久磁石6のみの収容が許容される大きさ及び形状に形成されている。   The cylindrical housing part 3 forms a lower housing part 3a in which the weight 5 is housed and an upper housing part 3b in which only the permanent magnet 6 is housed. The lower accommodating portion 3a having a larger cross section than the upper accommodating portion 3b is formed in a size and shape that allows the weight 5 to be accommodated (see FIG. 1). Further, the upper accommodating portion 3b having a smaller cross section than the lower accommodating portion 3a is formed in a size and shape that allows only the permanent magnet 6 to be accommodated.

また、下側収容部3aと上側収容部3bの間に生じる段差部分には、永久磁石6で吸着した重錘5の上端側外周縁部に対して当接される当接部3cを形成している。つまり、当接部3cは、永久磁石6で吸着した重錘5を、後述する磁石昇降装置7により筒状収容部3内に設定した重錘下降位置B1から重錘上昇位置A1へ上昇させた際に該重錘5の上端側外周縁部に当接される。その当接時に生じる反力により、永久磁石6の磁力に抗して、重錘5を永久磁石6から強制的に分離して自由落下させる。   In addition, an abutting portion 3c that abuts against the upper peripheral edge of the weight 5 adsorbed by the permanent magnet 6 is formed at the step formed between the lower accommodating portion 3a and the upper accommodating portion 3b. ing. That is, the contact portion 3c lifts the weight 5 attracted by the permanent magnet 6 from the weight lowering position B1 set in the cylindrical housing portion 3 by the magnet lifting device 7 described later to the weight lifting position A1. At this time, the weight 5 is brought into contact with the outer peripheral edge of the upper end side. The weight 5 is forcibly separated from the permanent magnet 6 and freely dropped against the magnetic force of the permanent magnet 6 by the reaction force generated at the time of contact.

当接部3cは、重錘5の重錘上昇位置A1と対応して装置本体2下面と略水平となる高さであって、重錘上昇位置A1に上昇された重錘5の上端側外周縁部に対して当接される高さ位置に設けられている。また、当接部3cは、永久磁石6の昇降が許容される大きさ及び形状に形成され、重錘5の上面側外周縁部に対して当接される大きさ及び形状に形成している。また、下側収容部3aから上側収容部3bに向けて徐々に狭くなるテーパ面に形成しているので、永久磁石6を下側収容部3aから上側収容部3bへ上昇させる際に、上側収容部3b内に向けて永久磁石6が収容ガイドされる。   The contact portion 3c has a height that is substantially horizontal to the lower surface of the apparatus main body 2 corresponding to the weight lifting position A1 of the weight 5, and is outside the upper end side of the weight 5 raised to the weight lifting position A1. It is provided at a height position that is in contact with the peripheral edge. Further, the contact portion 3 c is formed in a size and a shape that allow the elevating and lowering of the permanent magnet 6, and is formed in a size and a shape that makes contact with the upper peripheral edge of the weight 5. . Moreover, since it forms in the taper surface which becomes gradually narrow toward the upper side accommodating part 3b from the lower side accommodating part 3a, when raising the permanent magnet 6 from the lower side accommodating part 3a to the upper side accommodating part 3b, it accommodates the upper side accommodating The permanent magnet 6 is accommodated and guided toward the portion 3b.

磁石昇降装置7は、永久磁石6上端に連結されたワイヤ7aと、ワイヤ7a上端が固定されたプーリ7bと、プーリ7b中心に直結されたモータ7cで構成され、装置本体2内の右側上部に配置されている。   The magnet elevating device 7 includes a wire 7a connected to the upper end of the permanent magnet 6, a pulley 7b to which the upper end of the wire 7a is fixed, and a motor 7c directly connected to the center of the pulley 7b. Has been placed.

ワイヤ7a下端は、筒状収容部3の上端側中心部に形成した挿通孔3dを介して、筒状収容部3内に収容された永久磁石6上端に連結している。また、ワイヤ7a上端は、モータ7cが直結されたプーリ7bに固定している。   The lower end of the wire 7 a is connected to the upper end of the permanent magnet 6 accommodated in the cylindrical accommodating portion 3 through an insertion hole 3 d formed in the central portion on the upper end side of the cylindrical accommodating portion 3. The upper end of the wire 7a is fixed to a pulley 7b to which a motor 7c is directly connected.

モータ7cは、後述するバッテリーで構成される電源8に接続されており、後述する制御装置20(図5参照)から出力される指令信号により正逆回転される。また、後述する上昇スイッチ10と下降スイッチ11のスイッチ操作により正逆回転することもできる。   The motor 7c is connected to a power source 8 composed of a battery to be described later, and is rotated forward and backward by a command signal output from a control device 20 (see FIG. 5) to be described later. Further, forward / reverse rotation can be performed by operating a rise switch 10 and a drop switch 11 described later.

つまり、モータ7cを下降方向へ回転駆動して、プーリ7bを巻取り方向へ回転させ、永久磁石6に連結されたワイヤ7aをプーリ7bに巻き取ることにより、永久磁石6を、筒状収容部3内面に沿って磁石下降位置B2(図2参照の実線)から磁石上昇位置A2(図3参照の実線)へ上昇する。また、モータ7cを上昇方向へ回転駆動して、プーリ7bを巻戻し方向へ回転させ、永久磁石6に連結されたワイヤ7aをプーリ7bから巻き戻すことにより、永久磁石6を、筒状収容部3内面に沿って磁石上昇位置A2から磁石下降位置B2へ下降する。このように、永久磁石6を磁石上昇位置A2と磁石下降位置B2へ昇降することにより、貫入ロッド4と同一軸芯上に配置された重錘5を、貫入ロッド4が地盤に対して略垂直に打ち込まれる方向に向けて昇降することができる。   That is, the motor 7c is rotationally driven in the downward direction, the pulley 7b is rotated in the winding direction, and the wire 7a connected to the permanent magnet 6 is wound around the pulley 7b. 3 Ascending along the inner surface from the magnet lowering position B2 (solid line of FIG. 2) to the magnet raising position A2 (solid line of FIG. 3). Further, the motor 7c is rotationally driven in the upward direction, the pulley 7b is rotated in the rewinding direction, and the wire 7a connected to the permanent magnet 6 is rewound from the pulley 7b. 3 Along the inner surface, the magnet descends from the magnet ascending position A2 to the magnet descending position B2. In this way, by moving the permanent magnet 6 up and down to the magnet ascending position A2 and magnet descending position B2, the penetrating weight 4 disposed on the same axis as the penetrating rod 4 is substantially perpendicular to the ground. Can be moved up and down in the direction of driving.

重錘5は、貫入ロッド4を打ち込むのに必要な重量に形成され、重錘5全体又は永久磁石6が吸着される部分を磁力により吸着可能な金属で構成している。また、重錘5の外観を、筒状収容部3の下側収容部3aに対して上下移動が許容される大きさ及び形状に形成している。実施例では、5kgの重錘5を、50cmの落下高さから自由落下するが、重錘5の重量を、例えば5kg以下又は5kg以上の重量に変更してもよい。また、後述する落下距離b1,b2と対応する重錘5の落下高さを、例えば50cm以下又は50cm以上の高さに変更してもよい。   The weight 5 is formed to have a weight necessary for driving the penetrating rod 4, and the entire weight 5 or a portion to which the permanent magnet 6 is attracted is made of a metal that can be attracted by a magnetic force. In addition, the appearance of the weight 5 is formed in a size and shape that allows vertical movement with respect to the lower housing portion 3 a of the cylindrical housing portion 3. In the embodiment, the 5 kg weight 5 is freely dropped from the drop height of 50 cm, but the weight 5 may be changed to, for example, a weight of 5 kg or less or 5 kg or more. Moreover, you may change the fall height of the weight 5 corresponding to fall distance b1, b2 mentioned later to the height of 50 cm or less or 50 cm or more, for example.

永久磁石6は、重錘5を吸着するのに必要な磁力に励磁された永久磁石で構成され、永久磁石6の外観を、筒状収容部3の上側収容部3bに対して上下移動が許容される大きさ及び形状に形成している。   The permanent magnet 6 is composed of a permanent magnet excited by a magnetic force necessary to attract the weight 5, and the outer appearance of the permanent magnet 6 is allowed to move up and down with respect to the upper housing portion 3 b of the cylindrical housing portion 3. It is formed in the size and shape.

装置本体2側面には、電源8から供給される電力を各部へ通電するための電源スイッチ9と、磁石昇降装置7を上昇動作するための上昇スイッチ10と、下降するための下降スイッチ11を配置している。また、装置本体2下面には、重錘上昇位置A1に上昇された重錘5上端部と対応する装置本体2下面から貫入ロッド4が接地又は貫入された地盤Cまでの距離を測定するための距離検出センサ12を配置している。また、装置本体2上面には、貫入ロッド4の打ち込み動作を手動及び自動に切換えるための切換えスイッチ13と、貫入ロッド4の打ち込み回数や貫入長さ等を表示する表示器14と、装置全体の姿勢を調整するための水平器15とを配置している。   On the side surface of the apparatus main body 2, a power switch 9 for energizing each part with power supplied from the power supply 8, a raising switch 10 for raising the magnet lifting device 7, and a lowering switch 11 for lowering are arranged. is doing. Further, on the lower surface of the apparatus main body 2, the distance from the lower surface of the apparatus main body 2 corresponding to the upper end of the weight 5 raised to the weight rising position A1 to the ground C where the penetration rod 4 is grounded or penetrated is measured. A distance detection sensor 12 is arranged. Further, on the upper surface of the apparatus main body 2, a changeover switch 13 for switching the driving operation of the penetrating rod 4 between manual and automatic, a display 14 for displaying the number of times the penetrating rod 4 is driven, the penetrating length, and the like, A leveler 15 for adjusting the posture is arranged.

また、磁石昇降装置7と、電源スイッチ9と、上昇スイッチ10と、下降スイッチ11と、距離検出センサ12と、切換えスイッチ13と、表示器14と、後述する上昇検出スイッチ16と、下降検出スイッチ17と、正逆回路18と、トランス19とは、後述する制御装置20に接続されている(図5参照)。   Further, the magnet lifting device 7, the power switch 9, the raising switch 10, the lowering switch 11, the distance detecting sensor 12, the changeover switch 13, the display 14, the later-described raising detecting switch 16, and the lowering detecting switch. 17, the forward / reverse circuit 18, and the transformer 19 are connected to a control device 20 described later (see FIG. 5).

電源8は、地質調査装置1を駆動するのに必要な電力が蓄電されたバッテリーで構成され、磁石昇降装置7のモータ7cへ供給される電力を正逆切換えるための後述する正逆回路18と、回路を駆動するのに適した電圧に変圧するトランス19を介して、制御装置20に接続されている。なお、バッテリーに代えて、例えば家庭用や工業用の外部電源、太陽光発電装置等を電源8として用いてもよい。また、トランス19に代えて、電力を交流から直流へ変換するとともに、回路を駆動するのに適した電圧に変圧する整流回路を用いてもよい。   The power source 8 is constituted by a battery in which electric power necessary for driving the geological survey device 1 is stored, and a forward / reverse circuit 18 (to be described later) for switching forward / reversely the electric power supplied to the motor 7c of the magnet lifting / lowering device 7. The control device 20 is connected via a transformer 19 that transforms the voltage to a voltage suitable for driving the circuit. In place of the battery, for example, a home or industrial external power source, a solar power generation device, or the like may be used as the power source 8. Instead of the transformer 19, a rectifier circuit that converts electric power from alternating current to direct current and transforms the voltage to a voltage suitable for driving the circuit may be used.

距離検出センサ12は、波長の短い検出波D(例えば超音波)を地盤Cに向けて発信する図示しない発信部と、その地盤Cが反射した検出波Dを受信する図示しない受信部とを備えたセンサ(例えば超音波センサ)で構成され、重錘上昇位置A1に上昇された重錘5上端部と対応する装置本体2下面に対して下向きに取り付けられている。この距離検出センサ12は、貫入ロッド4の打ち込み開始前及び打ち込み終了後において、発信部から発信される検出波Dを、貫入ロッド4が貫入された地盤Cに向けて略垂直に当てる。地盤Cが反射する検出波Dを受信部で受信して、その受信した検出信号を制御装置20へ出力する。   The distance detection sensor 12 includes a transmission unit (not shown) that transmits a detection wave D (for example, an ultrasonic wave) having a short wavelength toward the ground C, and a reception unit (not shown) that receives the detection wave D reflected by the ground C. And is attached downward with respect to the lower surface of the apparatus body 2 corresponding to the upper end of the weight 5 raised to the weight raising position A1. The distance detection sensor 12 applies the detection wave D transmitted from the transmitting portion substantially vertically toward the ground C into which the penetration rod 4 has been penetrated before and after the penetration rod 4 has been driven. The detection wave D reflected by the ground C is received by the receiving unit, and the received detection signal is output to the control device 20.

表示器14は、7セグメント式のデジタル表示器で構成され、作業者の目で読取り可能に設けられている。この表示器14は、制御装置20から出力される貫入ロッド4の打ち込み回数、貫入ロッド4の貫入長さ等の打ち込み情報を表示する。また、デジタル表示器に代えて、アナログ表示器で表示してもよい。   The display 14 is composed of a 7-segment digital display, and is provided so as to be readable by an operator's eyes. The indicator 14 displays driving information such as the number of driving of the penetrating rod 4 and the penetrating length of the penetrating rod 4 output from the control device 20. Further, an analog display may be used instead of the digital display.

水平器15は、液体が封入された水準器で構成され、作業者の目で読取り可能に設けられている。この水平器15は、装置全体の姿勢を液中に封入された気泡の位置で表示する。つまり、液中の気泡が略真ん中に位置するように装置全体の姿勢を調整すれば、貫入ロッド4を地盤Cに対して略垂直に打ち込むことができる。また、液体式の水準器に代えて、レーザー水準器を用いてもよい。   The level 15 is composed of a level in which a liquid is sealed, and is provided so as to be readable by an operator's eyes. This level 15 displays the posture of the entire apparatus by the position of the bubbles enclosed in the liquid. That is, the penetration rod 4 can be driven substantially perpendicularly to the ground C by adjusting the attitude of the entire apparatus so that the bubbles in the liquid are positioned substantially in the middle. Further, a laser level may be used instead of the liquid level.

上昇検出スイッチ16と下降検出スイッチ17は、永久磁石6を検出するマグネットスイッチで構成されている。上昇検出スイッチ16は、筒状収容部3の上側収容部3b外面に設けられ、磁石昇降装置7の永久磁石6が磁石上昇位置A2に上昇されたことを検出し、その検出信号を制御装置20へ出力する。下降検出スイッチ17は、下側収容部3a外面に設けられ、永久磁石6が磁石下降位置B2に下降されたことを検出し、その検出信号を制御装置20へ出力する。制御装置20は、切換えスイッチ13の自動設定時において、上昇検出スイッチ16と下降検出スイッチ17から検出信号が出力された際に、モータ7cの駆動を即時逆転させる。また、切換えスイッチ13による手動設定時には、上昇検出スイッチ16と下降検出スイッチ17から検出信号が出力されると、モータ7cの駆動を即時停止させる。   The ascending detection switch 16 and the descending detection switch 17 are composed of magnet switches that detect the permanent magnet 6. The ascent detection switch 16 is provided on the outer surface of the upper accommodating portion 3b of the cylindrical accommodating portion 3, detects that the permanent magnet 6 of the magnet elevating device 7 has been elevated to the magnet ascent position A2, and detects the detection signal as a control device 20. Output to. The lowering detection switch 17 is provided on the outer surface of the lower accommodating portion 3a, detects that the permanent magnet 6 has been lowered to the magnet lowering position B2, and outputs a detection signal to the control device 20. When the changeover switch 13 is automatically set, the control device 20 immediately reverses the drive of the motor 7c when detection signals are output from the rise detection switch 16 and the fall detection switch 17. At the time of manual setting by the changeover switch 13, when detection signals are output from the rise detection switch 16 and the fall detection switch 17, the driving of the motor 7c is immediately stopped.

制御装置20は、周辺機器接続制御用IC(通称PIC)で構成され、装置本体2内の左側上部に配置されている。また、トランス19を介して電源8から供給される電力で駆動され、予め記憶された動作プログラムに沿って装置全体の動作を制御する。   The control device 20 is constituted by a peripheral device connection control IC (commonly called PIC), and is arranged at the upper left side in the device main body 2. Moreover, it drives with the electric power supplied from the power supply 8 via the trans | transformer 19, and controls operation | movement of the whole apparatus according to the operation | movement program memorize | stored beforehand.

つまり、制御装置20は、貫入ロッド4の打ち込み開始前(図1参照)において、距離検出センサ12から出力される検出信号に基づいて、重錘上昇位置A1に上昇された重錘5上端部と対応する装置本体2下面から貫入ロッド4の先端が貫入された地盤Cまでの距離a1を算出する。また、全体の距離a1から重錘5の落下距離b1を減算して、貫入ロッド4の貫入距離c1を算出するとともに、その距離a1,b1,c1の情報を記憶する。   That is, the control device 20 includes the upper end of the weight 5 raised to the weight raising position A1 based on the detection signal output from the distance detection sensor 12 before starting to drive the penetrating rod 4 (see FIG. 1). A distance a1 from the corresponding lower surface of the apparatus main body 2 to the ground C into which the tip of the penetrating rod 4 penetrates is calculated. Further, the falling distance b1 of the weight 5 is subtracted from the entire distance a1 to calculate the penetration distance c1 of the penetration rod 4, and information on the distances a1, b1, and c1 is stored.

貫入ロッド4の打ち込み終了後(図4参照)において、距離検出センサ12から出力される検出信号に基づいて、装置本体2下面から貫入ロッド4が打ち込まれた地盤Cまでの距離a2を算出する。その全体の距離a2から重錘5の落下距離b2を減算して、貫入ロッド4の残りの貫入距離c2を算出する。また、打ち込み開始前(図1参照)に算出した貫入距離c1から、打ち込み終了後(図4参照)に算出した貫入距離c2を減算して、実際に打ち込まれた貫入ロッド4の貫入距離c3を算出するとともに、その距離a2,b2,c2の情報を記憶する。   After the driving of the penetrating rod 4 is completed (see FIG. 4), the distance a2 from the lower surface of the apparatus main body 2 to the ground C where the penetrating rod 4 is driven is calculated based on the detection signal output from the distance detection sensor 12. The remaining distance c2 of the penetrating rod 4 is calculated by subtracting the falling distance b2 of the weight 5 from the total distance a2. Further, the penetration distance c2 calculated after the end of driving (see FIG. 4) is subtracted from the penetration distance c1 calculated before starting driving (see FIG. 1) to obtain the penetration distance c3 of the actually inserted penetration rod 4. While calculating, the information of the distances a2, b2, and c2 is stored.

なお、打ち込み開始前に測定される全体の距離a1は、重錘5の落下距離b1と、貫入ロッド4の貫入距離c1を加算したものと同一である。また、打ち込み終了後に測定される全体の距離a2も、重錘5の落下距離b2と、貫入ロッド4の貫入距離c2を加算したものと同一である。   The total distance a1 measured before the start of driving is the same as the sum of the falling distance b1 of the weight 5 and the penetration distance c1 of the penetration rod 4. The total distance a2 measured after the driving is completed is the same as the sum of the falling distance b2 of the weight 5 and the penetration distance c2 of the penetration rod 4.

他の算出方法として、貫入ロッド4の打ち込み開始前に測定した全体の距離a1(図1参照)から、打ち込み終了後に測定した距離a2(図4参照)を減算すれば、実際に打ち込まれた貫入ロッド4の貫入距離c3を算出することができる。   As another calculation method, if the distance a2 (see FIG. 4) measured after the end of driving is subtracted from the total distance a1 (see FIG. 1) measured before starting the driving of the penetrating rod 4, the penetration actually injected The penetration distance c3 of the rod 4 can be calculated.

貫入ロッド4の打ち込み動作を自動で行う場合、切換えスイッチ13を自動に切換えた後、下降スイッチ11を手動によりON操作すると、制御装置20は、予め記憶された動作プログラムに沿って貫入ロッド4の打ち込み動作を自動で開始する。   When the driving operation of the penetrating rod 4 is automatically performed, after the changeover switch 13 is switched to automatic and then the lowering switch 11 is manually turned on, the control device 20 causes the penetrating rod 4 to move in accordance with an operation program stored in advance. The driving operation starts automatically.

また、下降スイッチ11を手動によりON操作すると、制御装置20は、磁石昇降装置7のモータ7cを下降方向へ回転させる。プーリ7bに巻回されたワイヤ7aを巻き戻しして、永久磁石6を筒状収容部3内面に沿って磁石下降位置B2まで下降させ、下側収容部3a最下部の重錘下降位置B1に自由落下された重錘5を永久磁石6で吸着する(図1及び図2参照)。   When the lowering switch 11 is manually turned ON, the control device 20 rotates the motor 7c of the magnet lifting device 7 in the lowering direction. The wire 7a wound around the pulley 7b is rewound, and the permanent magnet 6 is lowered along the inner surface of the cylindrical housing portion 3 to the magnet lowering position B2, and is moved to the weight lowering position B1 at the bottom of the lower housing portion 3a. The free-falling weight 5 is attracted by the permanent magnet 6 (see FIGS. 1 and 2).

永久磁石6が磁石下降位置B2に降下すると、制御装置20は、下降検出スイッチ17から出力される検出信号に基づいて、磁石昇降装置7のモータ7cを上昇方向へ回転させる。ワイヤ7aをプーリ7bに巻き取り、永久磁石6を筒状収容部3内面に沿って磁石上昇位置A2まで上昇させ、永久磁石6で吸着した重錘5を筒状収容部3内面に沿って重錘上昇位置A1まで上昇させる(図3参照)。重錘上昇位置A1に上昇された重錘5は、下側収容部3aと上側収容部3bの段差部分に設けた当接部3cに当接し、永久磁石6から強制的に分離されて下側収容部3a最下部の重錘下降位置B1に自由落下される(図4参照)。   When the permanent magnet 6 is lowered to the magnet lowering position B2, the control device 20 rotates the motor 7c of the magnet lifting device 7 in the upward direction based on the detection signal output from the lowering detection switch 17. The wire 7a is wound around the pulley 7b, the permanent magnet 6 is raised along the inner surface of the cylindrical housing portion 3 to the magnet rising position A2, and the weight 5 adsorbed by the permanent magnet 6 is heavier along the inner surface of the cylindrical housing portion 3. The weight is raised to the weight raising position A1 (see FIG. 3). The weight 5 raised to the weight raising position A1 comes into contact with a contact portion 3c provided at a step portion between the lower housing portion 3a and the upper housing portion 3b, and is forcibly separated from the permanent magnet 6 to be lowered. It is freely dropped to the weight lowering position B1 at the lowermost part of the housing 3a (see FIG. 4).

永久磁石6が磁石上昇位置A2に上昇すると、制御装置20は、上昇検出スイッチ16から出力される検出信号に基づいて、磁石昇降装置7のモータ7cを下降方向へ回転させる。プーリ7bに巻回されたワイヤ7aを巻き戻しして、永久磁石6を筒状収容部3内面に沿って磁石下降位置B2まで下降させるので、重錘下降位置B1に自由落下した重錘5が永久磁石6で再び吸着される(図1及び図2参照)。   When the permanent magnet 6 rises to the magnet raising position A2, the control device 20 rotates the motor 7c of the magnet lifting device 7 in the downward direction based on the detection signal output from the rise detection switch 16. Since the wire 7a wound around the pulley 7b is unwound and the permanent magnet 6 is lowered along the inner surface of the cylindrical housing 3 to the magnet lowering position B2, the weight 5 that has freely dropped to the weight lowering position B1 is obtained. It is attracted again by the permanent magnet 6 (see FIGS. 1 and 2).

永久磁石6が磁石下降位置B2に下降すると、制御装置20は、下降検出スイッチ17から出力される検出信号に基づいて、磁石昇降装置7のモータ7cを上昇方向へ回転させる。ワイヤ7aをプーリ7bに巻き取り、永久磁石6を筒状収容部3内面に沿って磁石上昇位置A2まで上昇させる。前述と同様に、永久磁石6で吸着した重錘5を重錘上昇位置A1まで上昇させて当接部3cに当接し、永久磁石6から強制的に分離させて自由落下する。このように、重錘5の自由落下による貫入ロッド4の打ち込み動作が予め設定された回数繰り返されるようにプログラムされている。   When the permanent magnet 6 is lowered to the magnet lowering position B2, the control device 20 rotates the motor 7c of the magnet lifting device 7 in the upward direction based on the detection signal output from the lowering detection switch 17. The wire 7a is wound around the pulley 7b, and the permanent magnet 6 is raised to the magnet raising position A2 along the inner surface of the cylindrical housing 3. In the same manner as described above, the weight 5 attracted by the permanent magnet 6 is raised to the weight lifting position A1, is brought into contact with the contact portion 3c, is forcibly separated from the permanent magnet 6, and is freely dropped. Thus, the driving operation of the penetrating rod 4 due to the free fall of the weight 5 is programmed to be repeated a preset number of times.

貫入ロッド4の打ち込み動作を手動で行う場合、切換えスイッチ13を手動に切換えた後、下降スイッチ11を手動によりON操作すると、制御装置20は、磁石昇降装置7のモータ7cが下降方向へ回転する。プーリ7bに巻回されたワイヤ7aを巻き戻しし、磁石上昇位置A2に待機する永久磁石6を磁石下降位置B2まで下降させ、重錘下降位置B1に自由落下した重錘5を永久磁石6で吸着する。永久磁石6が磁石下降位置B2に下降すると、下降検出スイッチ17が永久磁石6を検出し、その検出信号を制御装置20へ出力する。制御装置20は、下降検出スイッチ17から検出信号が出力されると同時に、磁石昇降装置7のモータ7cを停止させる。   When the driving operation of the penetrating rod 4 is performed manually, the control device 20 rotates the motor 7c of the magnet elevating device 7 in the descending direction when the lowering switch 11 is manually turned on after the changeover switch 13 is switched to manual. . The wire 7a wound around the pulley 7b is rewound, the permanent magnet 6 waiting at the magnet ascending position A2 is lowered to the magnet descending position B2, and the weight 5 that freely falls to the weight descending position B1 is moved by the permanent magnet 6. Adsorb. When the permanent magnet 6 is lowered to the magnet lowering position B <b> 2, the lowering detection switch 17 detects the permanent magnet 6 and outputs a detection signal to the control device 20. The control device 20 stops the motor 7c of the magnet lifting device 7 at the same time that the detection signal is output from the lowering detection switch 17.

また、上昇スイッチ10を手動によりON操作すると、制御装置20は、磁石昇降装置7のモータ7cが上昇方向へ回転する。ワイヤ7aをプーリ7bに巻き取り、永久磁石6で吸着した重錘5を重錘上昇位置A1まで上昇させて当接部3cに当接し、永久磁石6から強制的に分離させて自由落下する。永久磁石6が磁石上昇位置A2に上昇すると、上昇検出スイッチ16が永久磁石6を検出し、その検出信号を制御装置20へ出力する。制御装置20は、上昇検出スイッチ16から検出信号が出力されると同時に、磁石昇降装置7のモータ7cを停止させ、永久磁石6を磁石上昇位置A2に待機させる。   Further, when the raising switch 10 is manually turned ON, the control device 20 causes the motor 7c of the magnet lifting device 7 to rotate in the raising direction. The wire 7a is wound around the pulley 7b, the weight 5 attracted by the permanent magnet 6 is raised to the weight rising position A1, is brought into contact with the contact portion 3c, is forcibly separated from the permanent magnet 6 and is freely dropped. When the permanent magnet 6 rises to the magnet raised position A2, the rise detection switch 16 detects the permanent magnet 6 and outputs a detection signal to the control device 20. At the same time when the detection signal is output from the ascent detection switch 16, the control device 20 stops the motor 7c of the magnet elevating device 7 and makes the permanent magnet 6 stand by at the magnet ascending position A2.

実施例では、上昇検出スイッチ16と下降検出スイッチ17をマグネットスイッチで構成しているが、例えば近接スイッチ、光電スイッチ等の非接触式スイッチ、リミットスイッチ等の接触式スイッチで構成してもよい。   In the embodiment, the ascending detection switch 16 and the descending detection switch 17 are composed of magnet switches, but may be composed of, for example, proximity switches, non-contact type switches such as photoelectric switches, and contact type switches such as limit switches.

図示実施例は前記の如く構成するものにして、以下、地質調査装置1による地質の調査方法を説明する。   The illustrated embodiment is configured as described above, and a geological survey method using the geological survey apparatus 1 will be described below.

先ず、調査開始前において、水平器15の気泡の位置を見ながら、装置全体を、貫入ロッド4が地盤Cに対して略垂直に打ち込まれる起立姿勢に作業者の手で調整して、装置全体の重量を利用して貫入ロッド4の先端を所望する長さだけ地盤Cに貫入する(図1参照)。なお、装置全体の重量を付加しても貫入ロッド4が地盤Cに貫入されない場合、装置全体又は貫入ロッド4を所望する回数回転させて貫入してもよい。また、装置全体の起立姿勢を、例えば支持棒、支持脚、持枠等の支持装置で機械的に支持してもよい。   First, before the investigation is started, the entire device is adjusted to an upright posture in which the penetrating rod 4 is driven substantially perpendicularly to the ground C by the operator's hand while observing the position of the bubbles in the leveling device 15. The tip of the penetrating rod 4 is penetrated into the ground C by a desired length using the weight (see FIG. 1). In addition, when the penetration rod 4 is not penetrated into the ground C even if the weight of the whole apparatus is added, the whole apparatus or the penetration rod 4 may be rotated by a desired number of times to penetrate. Moreover, you may support mechanically the standing posture of the whole apparatus with support apparatuses, such as a support rod, a support leg, and a holding frame, for example.

次に、貫入ロッド4の打ち込み開始前(図1参照)において、電源スイッチ9のON操作して、距離検出センサ12から発信される検出波Dを、貫入ロッド4が貫入された地盤Cに向けて略垂直に当てる。地盤Cが反射する検出波Dを距離検出センサ12で受信し、その受信した検出信号を制御装置20へ出力する。   Next, before the penetration rod 4 starts to be driven (see FIG. 1), the power switch 9 is turned on, and the detection wave D transmitted from the distance detection sensor 12 is directed toward the ground C into which the penetration rod 4 has penetrated. Apply it almost vertically. The detection wave D reflected by the ground C is received by the distance detection sensor 12, and the received detection signal is output to the control device 20.

制御装置20は、距離検出センサ12から出力される検出信号に基づいて、装置本体2下面から、貫入ロッド4が貫入された地盤Cまでの距離a1を算出する。また、全体の距離a1から重錘5の落下距離b1を減算して、貫入ロッド4の貫入距離c1を算出するとともに、距離a1,b1,c1の情報を記憶する。また、貫入ロッド4の先端を地盤Cに貫入せずに、貫装置本体2下面と、貫入ロッド4の先端が接地された地盤Cとの距離を、打ち込み開始前の距離情報として記憶してもよい。   Based on the detection signal output from the distance detection sensor 12, the control device 20 calculates a distance a <b> 1 from the lower surface of the device body 2 to the ground C where the penetration rod 4 is penetrated. In addition, the falling distance b1 of the weight 5 is subtracted from the entire distance a1 to calculate the penetration distance c1 of the penetration rod 4, and information on the distances a1, b1, and c1 is stored. Further, the distance between the bottom surface of the penetrating device main body 2 and the ground C to which the tip of the penetrating rod 4 is grounded is stored as distance information before the start of driving without penetrating the tip of the penetrating rod 4 into the ground C. Good.

貫入ロッド4の打ち込み動作を自動で行う場合、切換えスイッチ13を自動に切換えて、下降スイッチ11を手動によりON操作すると、制御装置20は、予め記憶された動作プログラムに沿って貫入ロッド4の打ち込み動作を自動で開始する。   When the driving operation of the penetrating rod 4 is automatically performed, when the changeover switch 13 is switched to the automatic operation and the lowering switch 11 is manually turned ON, the control device 20 drives the penetrating rod 4 according to the operation program stored in advance. The operation starts automatically.

つまり、下降スイッチ11をON操作すると、制御装置20は、磁石昇降装置7のモータ7cを下降方向へ回転させる。プーリ7bに巻回されたワイヤ7aを巻き戻しして、永久磁石6を磁石下降位置B2まで下降させ、下側収容部3a最下部の重錘下降位置B1に自由落下された重錘5を永久磁石6で吸着する(図1及び図2参照)。   That is, when the lowering switch 11 is turned on, the control device 20 rotates the motor 7c of the magnet lifting device 7 in the lowering direction. The wire 7a wound around the pulley 7b is unwound, the permanent magnet 6 is lowered to the magnet lowering position B2, and the weight 5 that has been freely dropped to the weight lowering position B1 at the lowermost part of the lower accommodating portion 3a is made permanent. It is attracted by the magnet 6 (see FIGS. 1 and 2).

永久磁石6が磁石下降位置B2に降下すると、制御装置20は、下降検出スイッチ17から出力される検出信号に基づいて、磁石昇降装置7のモータ7cを上昇方向へ回転させる。ワイヤ7aをプーリ7bに巻き取り、永久磁石6を磁石上昇位置A2まで上昇させる。永久磁石6で吸着した重錘5を重錘上昇位置A1まで上昇させて当接部3cに当接し、永久磁石6から強制的に分離して下側収容部3a最下部の重錘下降位置B1に自由落下させるので、重錘5の自由落下時に生じる衝撃により貫入ロッド4が地盤Cに打ち込まれる(図4参照)。   When the permanent magnet 6 is lowered to the magnet lowering position B2, the control device 20 rotates the motor 7c of the magnet lifting device 7 in the upward direction based on the detection signal output from the lowering detection switch 17. The wire 7a is wound around the pulley 7b, and the permanent magnet 6 is raised to the magnet raising position A2. The weight 5 attracted by the permanent magnet 6 is raised to the weight lifting position A1 and is brought into contact with the contact portion 3c. The weight 5 is forcibly separated from the permanent magnet 6 and the weight lowering position B1 at the bottom of the lower housing portion 3a. Therefore, the penetrating rod 4 is driven into the ground C by an impact generated when the weight 5 is freely dropped (see FIG. 4).

永久磁石6が磁石上昇位置A2に上昇すると、制御装置20は、上昇検出スイッチ16から出力される検出信号に基づいて、磁石昇降装置7のモータ7cを下降方向へ回転させる。プーリ7bに巻回されたワイヤ7aを巻き戻しして、永久磁石6を磁石下降位置B2まで下降させ、下側収容部3a最下部の重錘下降位置B1に自由落下した重錘5を永久磁石6で再び吸着する(図1及び図2参照)。   When the permanent magnet 6 rises to the magnet raising position A2, the control device 20 rotates the motor 7c of the magnet lifting device 7 in the downward direction based on the detection signal output from the rise detection switch 16. The wire 7a wound around the pulley 7b is rewound, the permanent magnet 6 is lowered to the magnet lowering position B2, and the weight 5 that has been freely dropped to the weight lowering position B1 at the lowermost part of the lower accommodating portion 3a is taken as the permanent magnet. 6 again (see FIGS. 1 and 2).

永久磁石6が磁石下降位置B2に下降すると、制御装置20は、下降検出スイッチ17から出力される検出信号に基づいて、磁石昇降装置7のモータ7cを上昇方向へ回転させる。ワイヤ7aをプーリ7bに巻き取り、永久磁石6を磁石上昇位置A2まで上昇させる。永久磁石6で吸着した重錘5を重錘上昇位置A1の当接部3cに当接し、永久磁石6から強制的に分離して自由落下させる(図3参照)。このように、重錘5の自由落下による貫入ロッド4の打ち込み動作を予め設定された回数繰り返して、貫入ロッド4を地盤Cに打ち込む。   When the permanent magnet 6 is lowered to the magnet lowering position B2, the control device 20 rotates the motor 7c of the magnet lifting device 7 in the upward direction based on the detection signal output from the lowering detection switch 17. The wire 7a is wound around the pulley 7b, and the permanent magnet 6 is raised to the magnet raising position A2. The weight 5 attracted by the permanent magnet 6 is brought into contact with the contact portion 3c at the weight raising position A1, and is forcibly separated from the permanent magnet 6 and freely dropped (see FIG. 3). Thus, the penetration rod 4 is driven into the ground C by repeating the driving operation of the penetration rod 4 by the free fall of the weight 5 a predetermined number of times.

貫入ロッド4の打ち込み終了後(図4参照)において、距離検出センサ12から発信される検出波Dを、貫入ロッド4が打ち込まれた地盤Cに向けて略垂直に当てる。地盤Cが反射する検出波Dを距離検出センサ12で受信し、その受信した検出信号を制御装置20へ出力する。   After the driving of the penetrating rod 4 is completed (see FIG. 4), the detection wave D transmitted from the distance detection sensor 12 is applied substantially perpendicularly to the ground C on which the penetrating rod 4 is driven. The detection wave D reflected by the ground C is received by the distance detection sensor 12, and the received detection signal is output to the control device 20.

制御装置20は、距離検出センサ12から出力される検出信号に基づいて、装置本体2下面から、貫入ロッド4が打ち込まれた地盤Cまでの距離a2を算出する。その全体の距離a2から重錘5の落下距離b2を減算して、貫入ロッド4の残りの貫入距離c2を算出する。この後、打ち込み開始前(図1参照)に算出した貫入ロッド4の貫入距離c1から、打ち込み終了後(図4参照)に算出した貫入距離c2を減算すれば、実際に打ち込まれた貫入ロッド4の貫入距離c3を算出することができる。このように、重錘5の自由落下により打ち込まれた貫入ロッド4の貫入距離c3を算出するので、例えば地盤の硬軟、締まり具合、地盤支持強度等の地質に関する所定項目を評価するのに必要な測定結果が得られる。また、表示器14は、貫入ロッド4の打ち込み回数や貫入長さ等を表示する。   Based on the detection signal output from the distance detection sensor 12, the control device 20 calculates a distance a <b> 2 from the lower surface of the device body 2 to the ground C where the penetrating rod 4 is driven. The remaining distance c2 of the penetrating rod 4 is calculated by subtracting the falling distance b2 of the weight 5 from the total distance a2. Thereafter, if the penetration distance c2 calculated after completion of driving (see FIG. 4) is subtracted from the penetration distance c1 of the penetration rod 4 calculated before starting driving (see FIG. 1), the penetration rod 4 actually driven in The penetration distance c3 can be calculated. Thus, since the penetration distance c3 of the penetration rod 4 driven by the free fall of the weight 5 is calculated, it is necessary to evaluate predetermined items related to geology such as the hardness of the ground, the tightness, and the ground support strength. A measurement result is obtained. The indicator 14 displays the number of times the penetration rod 4 is driven, the penetration length, and the like.

また、切換えスイッチ13を手動に切換えた後、上昇スイッチ10と下降スイッチ11を手動によりON操作して、重錘5の自由落下による貫入ロッド4の打ち込み動作を手動操作により所望する回数行ってもよい。   Further, after the changeover switch 13 is switched to the manual operation, the raising switch 10 and the lowering switch 11 are manually turned ON, and the driving operation of the penetrating rod 4 due to the free fall of the weight 5 is performed manually as many times as desired. Good.

以上のように、永久磁石6で吸着した重錘5を、磁石昇降装置7により重錘下降位置B1から重錘上昇位置A1へ上昇させて当接部3cに当接し、永久磁石6から重錘5を強制的に分離して自由落下させた際に生じる衝撃により貫入ロッド4を地盤Cへ打ち込むので、従来例のようにフックや爪を重錘に係止及びその係止を解除するか、ハンガーで保持及びその保持を解除する等の動作や機構が不要であり、重錘5の自由落下による貫入ロッド4の打ち込み動作が迅速且つ効率的に行える。また、装置全体の構成が簡素化されるため、地質調査装置1の小型化及び軽量化、製作費の低減を図ることができる。   As described above, the weight 5 attracted by the permanent magnet 6 is lifted from the weight lowering position B1 to the weight lifting position A1 by the magnet lifting device 7 and brought into contact with the contact portion 3c. Since the penetrating rod 4 is driven into the ground C by impact generated when the 5 is forcibly separated and freely dropped, the hook or claw is locked to the weight and the locking is released as in the conventional example, The operation and mechanism such as holding and releasing the holding by the hanger are unnecessary, and the driving operation of the penetrating rod 4 by the free fall of the weight 5 can be performed quickly and efficiently. Moreover, since the structure of the whole apparatus is simplified, the geological survey apparatus 1 can be reduced in size and weight, and the production cost can be reduced.

また、貫入ロッド4と同一軸芯上に配置された重錘5を、筒状収容部3内面に沿って貫入ロッド4が地盤Cに対して略垂直に打ち込まれる上下方向に向けて落下ガイドするので、重錘5の自由落下時に生じる衝撃を、貫入ロッド4が地盤Cに対して略垂直に打ち込まれる方向に対して加えることができ、重錘5の自由落下を利用した打ち込み作業が確実に行える。   Further, the weight 5 arranged on the same axis as the penetrating rod 4 is guided to drop in the vertical direction in which the penetrating rod 4 is driven substantially perpendicular to the ground C along the inner surface of the cylindrical housing 3. Therefore, the impact generated when the weight 5 is freely dropped can be applied to the direction in which the penetrating rod 4 is driven substantially perpendicularly to the ground C, and the driving work using the free falling of the weight 5 is ensured. Yes.

図6は、重錘5を、チェーン28に取り付けられた永久磁石6で吸着して重錘下降位置B1から重錘上昇位置A1へ上昇させる磁石周回装置27を備えた地質調査装置1の他の実施例を示し、磁石周回装置27は、永久磁石6が取り付けられたチェーン28を、筒状収容部3の上端側外面部に軸支したスプロケット29と、下端側外面部に軸支したスプロケット30に掛け渡して、装置本体2内の右側上部に配置したモータ31により、スプロケット31a,31b及びチェーン31cを介して、重錘下降位置B1から重錘上昇位置A1に向けて図中矢印で示す周回方向Eへ回転する。   FIG. 6 shows another embodiment of the geological survey device 1 including the magnet rotating device 27 that attracts the weight 5 with the permanent magnet 6 attached to the chain 28 and lifts the weight 5 from the weight lowering position B1 to the weight lifting position A1. In the embodiment, the magnet rotating device 27 includes a sprocket 29 in which a chain 28 to which the permanent magnet 6 is attached is pivotally supported on the outer surface on the upper end side of the cylindrical housing 3 and a sprocket 30 in which the chain 28 is supported on the outer surface on the lower end side. The motor 31 disposed on the upper right side in the apparatus main body 2 is looped by the arrow in the figure from the weight lowering position B1 to the weight lifting position A1 via the sprockets 31a, 31b and the chain 31c. Rotate in direction E.

つまり、永久磁石6を、チェーン28の回転により周回方向Eへ周回移動させながら、筒状収容部3の側面全長(重錘下降位置B1から重錘上昇位置A1に至る全長)に開口した縦長の開口部3eに下端側から挿入し、上端側から抜き取る。   In other words, while the permanent magnet 6 is rotated in the rotating direction E by the rotation of the chain 28, the permanent magnet 6 is opened to the entire length of the side surface of the cylindrical housing 3 (the total length from the weight lowering position B1 to the weight lifting position A1). Insert into the opening 3e from the lower end side and extract from the upper end side.

筒状収容部3の重錘下降位置B1に自由落下された重錘5を永久磁石6で吸着して、開口部3eに沿って重錘下降位置B1から重錘上昇位置A1へ上昇させる。永久磁石6で吸着した重錘5を重錘上昇位置A1へ上昇させた際に、永久磁石6で吸着した重錘5を重錘上昇位置A1の当接部3cに当接し、永久磁石6の磁力に抗して、重錘5を永久磁石6から強制的に分離して自由落下させる。重錘5の自由落下時に生じる衝撃により貫入ロッド4を地盤Cに打ち込むので、前記実施例と略同等の作用及び効果を奏することができる。また、重錘5を吸着する際に励磁するか、重錘5を落下させる際に励磁を解除する必要がなく、モータ31を正逆回転するか駆動及び停止する必要もないので、消費電力の低減を図ることができる。   The weight 5 that freely falls to the weight lowering position B1 of the cylindrical housing portion 3 is attracted by the permanent magnet 6 and is raised from the weight lowering position B1 to the weight lifting position A1 along the opening 3e. When the weight 5 attracted by the permanent magnet 6 is raised to the weight lift position A1, the weight 5 attracted by the permanent magnet 6 is brought into contact with the contact portion 3c of the weight lift position A1, and the permanent magnet 6 The weight 5 is forcibly separated from the permanent magnet 6 and free-falled against the magnetic force. Since the penetrating rod 4 is driven into the ground C by an impact generated when the weight 5 is freely dropped, the operation and effect substantially the same as those of the above embodiment can be achieved. Further, it is not necessary to excite the weight 5 when it is adsorbed, or to release the excitation when the weight 5 is dropped, and it is not necessary to rotate the motor 31 forward or reverse, or to drive and stop it. Reduction can be achieved.

また、永久磁石6が取り付けられたチェーン28を筒状収容部3の両側部に配置し、各永久磁石6,6が取り付けられた左右一対の各チェーン28,28を周回方向Eへ同期回転させて、筒状収容部3に収容された重錘5を左右一対の各永久磁石6,6で吸着して重錘下降位置B1から重錘上昇位置A1へ上昇させてもよい。   Further, the chains 28 to which the permanent magnets 6 are attached are arranged on both sides of the cylindrical housing portion 3, and the pair of left and right chains 28 and 28 to which the permanent magnets 6 and 6 are attached are synchronously rotated in the circumferential direction E. Thus, the weight 5 housed in the cylindrical housing portion 3 may be attracted by the pair of left and right permanent magnets 6 and 6 and raised from the weight lowered position B1 to the weight raised position A1.

図7は、重錘5を、励磁可能な電磁石6Aで吸着して重錘下降位置B1から重錘上昇位置A1へ上昇させる磁石昇降装置7を備えた地質調査装置1のその他の実施例を示し、電磁石6Aを、磁石昇降装置7により磁石上昇位置A2から磁石下降位置B2へ下降させた際に、制御装置20は、下降検出スイッチ17から出力される検出信号に基づいて、電磁石6Aを励磁させ、筒状収容部3の重錘下降位置B1に自由落下された重錘5を電磁石6Aで吸着する。電磁石6Aで吸着した重錘5を重錘下降位置B1から重錘上昇位置A1へ上昇させた際に、制御装置20は、上昇検出スイッチ16から出力される検出信号に基づいて、電磁石6Aの励磁を解除し、重錘5を電磁石6Aから分離して自由落下させる。重錘5の自由落下時に生じる衝撃により貫入ロッド4を地盤Cに打ち込むので、前記実施例と略同等の作用及び効果を奏することができる。   FIG. 7 shows another embodiment of the geological survey device 1 including the magnet lifting / lowering device 7 that attracts the weight 5 with the excitable electromagnet 6A and lifts the weight 5 from the weight lowering position B1 to the weight lifting position A1. Then, when the electromagnet 6A is lowered from the magnet raised position A2 to the magnet lowered position B2 by the magnet lifting device 7, the control device 20 excites the electromagnet 6A based on the detection signal output from the lowering detection switch 17. The weight 5 that is freely dropped to the weight lowering position B1 of the cylindrical housing 3 is adsorbed by the electromagnet 6A. When the weight 5 attracted by the electromagnet 6A is lifted from the weight lowering position B1 to the weight lifting position A1, the control device 20 excites the electromagnet 6A based on the detection signal output from the lift detection switch 16. Is released, and the weight 5 is separated from the electromagnet 6A and allowed to fall freely. Since the penetrating rod 4 is driven into the ground C by an impact generated when the weight 5 is freely dropped, the operation and effect substantially the same as those of the above embodiment can be achieved.

また、プーリ7bによるワイヤ7aの巻き取り量を検出して、電磁石6Aで吸着した重錘5を重錘上昇位置A1へ上昇したときに検出される巻き取り量と一致した際に、電磁石6Aの励磁を解除して自由落下させてもよい。なお、電磁石6Aは、図示しない電線を介して電源8と制御装置20に接続されている。また、筒状収容部3と電磁石6Aの対向面に通電が許容される接点を設けてもよい。   Further, when the winding amount of the wire 7a by the pulley 7b is detected, and the weight 5 adsorbed by the electromagnet 6A coincides with the winding amount detected when the weight 5 is lifted to the weight lifting position A1, the electromagnet 6A The excitation may be released to allow free fall. The electromagnet 6A is connected to the power source 8 and the control device 20 via an electric wire (not shown). Moreover, you may provide the contact in which electricity supply is accept | permitted on the opposing surface of the cylindrical accommodating part 3 and the electromagnet 6A.

図8は、重錘5を、電磁石6Aで吸着して重錘下降位置B1から重錘上昇位置A1へ上昇させる磁石周回装置27を備えた地質調査装置1のその他の実施例を示し、電磁石6Aを、磁石周回装置27により重錘上昇位置A1から重錘下降位置B1へ周回移動させた際に、制御装置20は、下降検出スイッチ17から出力される検出信号に基づいて、電磁石6Aを励磁させ、筒状収容部3の重錘下降位置B1に自由落下された重錘5を電磁石6Aで吸着する。電磁石6Aで吸着した重錘5を重錘下降位置B1から重錘上昇位置A1へ上昇させた際に、制御装置20は、上昇検出スイッチ16から出力される検出信号に基づいて、電磁石6Aの励磁を解除し、重錘5を電磁石6Aから分離して自由落下させる。重錘5の自由落下時に生じる衝撃により貫入ロッド4を地盤Cに打ち込むので、前記実施例と略同等の作用及び効果を奏することができる。   FIG. 8 shows another embodiment of the geological survey device 1 including the magnet rotating device 27 that attracts the weight 5 with the electromagnet 6A and raises the weight 5 from the weight lowering position B1 to the weight lifting position A1, and the electromagnet 6A. Is moved around from the weight rising position A1 to the weight lowering position B1 by the magnet rotating device 27, the control device 20 excites the electromagnet 6A based on the detection signal output from the lowering detection switch 17. The weight 5 that is freely dropped to the weight lowering position B1 of the cylindrical housing 3 is adsorbed by the electromagnet 6A. When the weight 5 attracted by the electromagnet 6A is lifted from the weight lowering position B1 to the weight lifting position A1, the control device 20 excites the electromagnet 6A based on the detection signal output from the lift detection switch 16. Is released, and the weight 5 is separated from the electromagnet 6A and allowed to fall freely. Since the penetrating rod 4 is driven into the ground C by an impact generated when the weight 5 is freely dropped, the operation and effect substantially the same as those of the above embodiment can be achieved.

なお、図6〜図8の他の実施例に於いて、前記実施例と同一構成の部分は同一の符号を記してその詳細な説明を省略する。   In other embodiments of FIGS. 6 to 8, parts having the same configuration as those of the above embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

この発明の構成と、前述の実施例との対応において、
この発明の重錘ガイド手段は、実施例の筒状収容部3に対応し、
以下同様に、
重錘分離手段は、筒状収容部3の当接部3cに対応し、
請求項1の磁石は、永久磁石6に対応し、
請求項2の磁石は、電磁石6Aに対応し、
磁石移動手段は、磁石昇降手段である磁石昇降装置7と、磁石周回手段である磁石周回装置27に対応し、
貫入長さ測定手段は、距離検出センサ12に対応し、
励磁制御手段及び制御手段は、制御装置20に対応するも、
この発明は、前述の実施例の構成のみに限定されるものではなく、請求項に示される技術思想に基づいて応用することができ、多くの実施の形態を得ることができる。
In the correspondence between the configuration of the present invention and the above-described embodiment,
The weight guide means of the present invention corresponds to the cylindrical housing portion 3 of the embodiment,
Similarly,
The weight separating means corresponds to the contact portion 3c of the cylindrical housing portion 3,
The magnet of claim 1 corresponds to the permanent magnet 6,
The magnet of claim 2 corresponds to the electromagnet 6A,
The magnet moving means corresponds to the magnet elevating device 7 which is a magnet elevating means and the magnet orbiting device 27 which is a magnet orbiting means,
The penetration length measuring means corresponds to the distance detection sensor 12,
Excitation control means and control means correspond to the control device 20,
The present invention is not limited to the configuration of the above-described embodiment, but can be applied based on the technical idea shown in the claims, and many embodiments can be obtained.

例えば重錘5(図1〜図4参照)を電磁石6A(図7参照)で吸着する構成を採用してもよい。この場合、電磁石6Aで吸着した重錘5を当接部3cに当接した際に生じるモータ7cの過電流を検出し、その検出時に出力される検出信号に基づいて、電磁石6Aの励磁を解除し、電磁石6Aから重錘5を自由落下させる。   For example, you may employ | adopt the structure which adsorb | sucks the weight 5 (refer FIGS. 1-4) with the electromagnet 6A (refer FIG. 7). In this case, the overcurrent of the motor 7c generated when the weight 5 adsorbed by the electromagnet 6A is brought into contact with the contact portion 3c is detected, and the excitation of the electromagnet 6A is canceled based on the detection signal output at the time of detection. Then, the weight 5 is freely dropped from the electromagnet 6A.

地質調査装置を構成する磁石の下降動作を示す断面図。Sectional drawing which shows the descent | fall operation | movement of the magnet which comprises a geological survey apparatus. 重錘下降位置の重錘を磁石で吸着した状態を示す断面図。Sectional drawing which shows the state which adsorb | sucked the weight of the weight fall position with the magnet. 磁石で吸着した重錘を重錘上昇位置に上昇した状態を示す断面図。Sectional drawing which shows the state which raised the weight adsorbed with the magnet to the weight raising position. 重錘の自由落下による貫入ロッドの打ち込み状態を示す断面図。Sectional drawing which shows the driving | running state of the penetration rod by the free fall of a weight. 制御装置の制御系を示す回路図。The circuit diagram which shows the control system of a control apparatus. 磁石を周回移動する地質調査装置の他の例を示す断面図。Sectional drawing which shows the other example of the geological survey apparatus which orbits a magnet. 重錘を電磁石で吸着する地質調査装置のその他の例を示す断面図。Sectional drawing which shows the other example of the geological survey apparatus which adsorb | sucks a weight with an electromagnet. 電磁石を周回移動する地質調査装置のその他の例を示す断面図。Sectional drawing which shows the other example of the geological survey apparatus which orbits an electromagnet.

符号の説明Explanation of symbols

A1…重錘上昇位置
B1…重錘下降位置
A2…磁石上昇位置
B2…磁石下降位置
C…地盤
D…検出波
1…地質調査装置
2…装置本体
3…筒状収容部
3c…当接部
4…貫入ロッド
5…重錘
6…磁石
6A…電磁石
7…磁石昇降装置
7c…モータ
8…電源
9…電源スイッチ
10…上昇スイッチ
11…下降スイッチ
12…距離検出センサ
13…切換えスイッチ
14…表示器
15…水平器
16…上昇検出スイッチ
17…下降検出スイッチ
18…正逆回路
19…トランス
20…制御装置
27…磁石周回装置
28…チェーン
29,30…スプロケット
31…モータ
A1 ... Weight lifting position B1 ... Weight lowering position A2 ... Magnet lifting position B2 ... Magnet lowering position C ... Ground D ... Detection wave 1 ... Geological survey device 2 ... Device main body 3 ... Cylindrical housing portion 3c ... Contact portion 4 DESCRIPTION OF SYMBOLS ... Penetration rod 5 ... Weight 6 ... Magnet 6A ... Electromagnet 7 ... Magnet raising / lowering device 7c ... Motor 8 ... Power supply 9 ... Power switch 10 ... Lift switch 11 ... Drop switch 12 ... Distance detection sensor 13 ... Changeover switch 14 ... Indicator 15 ...... Leveling device 16 ... Ascent detection switch 17 ... Ascent detection switch 18 ... Forward / reverse circuit 19 ... Transformer 20 ... Control device 27 ... Magnet rotating device 28 ... Chain 29, 30 ... Sprocket 31 ... Motor

Claims (6)

重錘を所定高さから自由落下させた際に生じる衝撃により、装置本体に垂設した貫入ロッドを地盤に打ち込んで地質の所定項目を調査する地質調査装置であって、
前記貫入ロッドと同一軸芯上に配置された重錘を、該貫入ロッドが地盤に対して略垂直に打ち込まれる方向に向けて落下ガイドする重錘ガイド手段と、
前記重錘を吸着するのに必要な磁力に励磁された磁石を、該磁石で吸着した重錘が所定高さに上昇される磁石上昇位置と、前記自由落下した重錘が吸着される磁石下降位置との間で移動する磁石移動手段と、
前記磁石の磁力に抗して、前記磁石上昇位置に上昇された磁石から該磁石に吸着された重錘を分離する重錘分離手段と、
前記重錘の自由落下により地盤に打ち込まれた貫入ロッドの貫入長さを測定する貫入長さ測定手段と、
前記磁石移動手段の駆動及び停止と、前記貫入長さ測定手段の測定動作を制御する制御手段とを備えた
地質調査装置。
It is a geological survey device that investigates a predetermined item of geology by driving a penetrating rod suspended from the device body into the ground due to an impact generated when the weight is freely dropped from a predetermined height,
A weight guide means for guiding a weight placed on the same axis as the penetrating rod to drop in a direction in which the penetrating rod is driven substantially perpendicular to the ground;
The magnet excited by the magnetic force necessary to attract the weight, the magnet rising position where the weight attracted by the magnet is raised to a predetermined height, and the magnet descending where the free fallen weight is attracted Magnet moving means for moving between positions;
Weight separating means for separating the weight attracted to the magnet from the magnet raised to the magnet rising position against the magnetic force of the magnet,
Penetrating length measuring means for measuring the penetrating length of the penetrating rod driven into the ground by the free fall of the weight;
A geological survey apparatus comprising: driving and stopping of the magnet moving means; and control means for controlling the measuring operation of the penetration length measuring means.
重錘を所定高さから自由落下させた際に生じる衝撃により、装置本体に垂設した貫入ロッドを地盤に打ち込んで地質の所定項目を調査する地質調査装置であって、
前記貫入ロッドと同一軸芯上に配置された重錘を、該貫入ロッドが地盤に対して略垂直に打ち込まれる方向に向けて落下ガイドする重錘ガイド手段と、
前記重錘を吸着するのに必要な磁力に励磁される磁石を、該磁石で吸着した重錘が所定高さに上昇される磁石上昇位置と、前記自由落下した重錘が吸着される磁石下降位置との間で移動する磁石移動手段と、
前記磁石で吸着した重錘が所定高さに上昇された際に前記磁石の励磁を解除し、前記自由落下された重錘を吸着する際に前記磁石を励磁する励磁制御手段と、
前記重錘の自由落下により地盤に打ち込まれた貫入ロッドの貫入長さを測定する貫入長さ測定手段と、
前記磁石移動手段の駆動及び停止と、前記貫入長さ測定手段の測定動作を制御する制御手段とを備えた
地質調査装置。
It is a geological survey device that investigates a predetermined item of geology by driving a penetrating rod suspended from the device body into the ground due to an impact generated when the weight is freely dropped from a predetermined height,
A weight guide means for guiding a weight placed on the same axis as the penetrating rod to drop in a direction in which the penetrating rod is driven substantially perpendicular to the ground;
The magnet excited by the magnetic force necessary to attract the weight, the magnet rising position where the weight attracted by the magnet is raised to a predetermined height, and the magnet descending where the free fallen weight is attracted Magnet moving means for moving between positions;
Excitation control means for releasing excitation of the magnet when the weight attracted by the magnet is raised to a predetermined height and exciting the magnet when attracting the free-falling weight;
Penetrating length measuring means for measuring the penetrating length of the penetrating rod driven into the ground by the free fall of the weight;
A geological survey apparatus comprising driving and stopping of the magnet moving means and control means for controlling the measuring operation of the penetration length measuring means.
前記重錘ガイド手段を、前記重錘の収容が許容される大きさ及び形状の筒状収容部で構成した
請求項1又は2に記載の地質調査装置。
The geological survey device according to claim 1 or 2, wherein the weight guide means is configured by a cylindrical housing portion having a size and shape that allows the weight to be housed.
前記重錘分離手段を、前記磁石移動手段により重錘上昇位置に上昇された重錘に対して当接される当接部で構成した
請求項1に記載の地質調査装置。
2. The geological survey device according to claim 1, wherein the weight separating means is constituted by a contact portion that comes into contact with a weight raised to a weight rising position by the magnet moving means.
前記磁石移動手段を、前記磁石で吸着した重錘が所定高さに上昇される磁石上昇位置と、前記自由落下した重錘が吸着される磁石下降位置とに前記磁石を昇降する磁石昇降手段で構成した
請求項1〜4のいずれか一つに記載の地質調査装置。
The magnet moving means is a magnet raising / lowering means for raising and lowering the magnet to a magnet rising position where the weight attracted by the magnet is raised to a predetermined height and a magnet descending position where the weight that has fallen free is attracted. The configured geological survey device according to any one of claims 1 to 4.
前記磁石移動手段を、前記自由落下した重錘が吸着される重錘下降位置から、該磁石で吸着した重錘が自由落下される重錘上昇位置に向けて前記磁石を周回移動する磁石周回手段で構成した
請求項1〜4のいずれか一つに記載の地質調査装置。
Magnet rotating means for moving the magnet from the weight lowering position where the weight that has fallen free is attracted to the weight rising position where the weight attracted by the magnet is freely dropped The geological survey device according to any one of claims 1 to 4, comprising:
JP2007105404A 2007-04-13 2007-04-13 Geological survey device Pending JP2008261166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007105404A JP2008261166A (en) 2007-04-13 2007-04-13 Geological survey device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007105404A JP2008261166A (en) 2007-04-13 2007-04-13 Geological survey device

Publications (1)

Publication Number Publication Date
JP2008261166A true JP2008261166A (en) 2008-10-30

Family

ID=39983844

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007105404A Pending JP2008261166A (en) 2007-04-13 2007-04-13 Geological survey device

Country Status (1)

Country Link
JP (1) JP2008261166A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046524A (en) * 2012-12-28 2013-04-17 东南大学 Piezocone penetration test probe for probing underground magnetic field intensity
CN107268566A (en) * 2017-08-11 2017-10-20 中国水利水电第五工程局有限公司 A kind of GCO probe GCO instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103046524A (en) * 2012-12-28 2013-04-17 东南大学 Piezocone penetration test probe for probing underground magnetic field intensity
CN107268566A (en) * 2017-08-11 2017-10-20 中国水利水电第五工程局有限公司 A kind of GCO probe GCO instrument

Similar Documents

Publication Publication Date Title
JP2008261166A (en) Geological survey device
CN109612373B (en) Detection device for sediment at bottom of hole and detection method using detection device
JP5998255B1 (en) Premium acquisition game device
JP2008139140A (en) Simple dynamic cone penetration testing machine
JP5086781B2 (en) Blow penetration test equipment
JP7305182B2 (en) borehole gauge
CN207351523U (en) Based on the liquid level alarming switch detection device of static liquid level and its caliberating device of alarming line
CN206859277U (en) Multifunctional vibration-type stake well sediment detector
KR101665095B1 (en) machining center
JPS6018932B2 (en) Steel pipe impact test equipment
CN115097363A (en) Neodymium iron boron magnet detection device and method for recycling neodymium iron boron waste
JP5753239B2 (en) Penetration test method and apparatus
KR102235790B1 (en) A Smart Jigging System
JPH06128957A (en) Measuring equipment for top end of placed concrete
KR20040058464A (en) Impact Tester for bearing
JPH086306B2 (en) Measuring device for N value in soil standard penetration test
JP4287679B2 (en) Automatic penetration testing machine
KR20210119115A (en) Apparatus for detecting metal
CN211601907U (en) Non-metal plate thickness detector
JP4205994B2 (en) Automatic penetration testing machine and penetration rod drawing method
CN219891419U (en) Automatically adjusting seismic source
CN218148544U (en) Pile foundation load detection device
CN115059046B (en) Automatic mark penetration probe recorder and control method thereof
CN218436968U (en) Automatic drilling device
JPH06205881A (en) Hanging member controlling device of stage mechanism