JP2552888Y2 - Probe rod insertion device for soil thermal resistance measurement - Google Patents
Probe rod insertion device for soil thermal resistance measurementInfo
- Publication number
- JP2552888Y2 JP2552888Y2 JP1991033576U JP3357691U JP2552888Y2 JP 2552888 Y2 JP2552888 Y2 JP 2552888Y2 JP 1991033576 U JP1991033576 U JP 1991033576U JP 3357691 U JP3357691 U JP 3357691U JP 2552888 Y2 JP2552888 Y2 JP 2552888Y2
- Authority
- JP
- Japan
- Prior art keywords
- clamp
- probe
- thermal resistance
- soil
- probe bar
- 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.)
- Expired - Lifetime
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、例えば電力ケーブルな
どを地下に埋設する場合に行なわれる土壌の熱抵抗測定
のための土壌熱抵抗測定用探針棒挿入装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a probe rod insertion device for measuring soil thermal resistance for measuring the thermal resistance of soil, for example, when an electric power cable or the like is buried underground.
【０００２】[0002]
【従来の技術】例えば電力ケ−ブルなどを地下に埋設す
る場合にはケーブルの被覆物の耐熱性を考慮せねばなら
ず、そのために電力ケーブルの許容電流を決定すること
が必要とされる。このような場合には、ケーブルの許容
電流に関係する土壌の熱抵抗が測定される。2. Description of the Related Art For example, when burying a power cable or the like underground, it is necessary to consider the heat resistance of the covering of the cable, and therefore, it is necessary to determine the allowable current of the power cable. In such a case, the thermal resistance of the soil, which is related to the allowable current of the cable, is measured.
【０００３】従来、土壌の熱抵抗を測定するには、熱源
と熱電対を装備した探針棒を土中に挿入し、探針棒内の
熱源からの放射熱を土壌を介して熱電対で測定し、その
温度変化から温度勾配を計算して熱抵抗を求める方法が
行なわれている。このとき、この土壌熱抵抗測定用探針
棒を土中に挿入するには、予め、探針棒と同径のガイド
棒を土中へとハンマーで所要の長さ打ち込み、次いで、
該ガイド棒を引き抜いてから、その形成された穴に探針
棒を、同様にハンマーで打ち込むことによって行なわれ
ていた。Conventionally, to measure the thermal resistance of soil, a probe bar equipped with a heat source and a thermocouple is inserted into the soil, and radiant heat from the heat source in the probe bar is passed through the soil by a thermocouple. A method of measuring the temperature and calculating the temperature gradient from the temperature change to obtain the thermal resistance has been used. At this time, in order to insert the probe bar for measuring the soil thermal resistance into the soil, a guide bar having the same diameter as the probe bar is previously driven into the soil with a hammer into a required length, and then,
After the guide bar is pulled out, a probe bar is similarly driven into the formed hole with a hammer.
【０００４】[0004]
【考案が解決しようとする課題】しかしながら、特に、
土壌が固い場合などには、ハンマーによる探針棒の打ち
込みの際に、探針棒には繰返し衝撃荷重がかかり、これ
によって内部の熱電対の剥離や、探針棒自体に曲がりを
生じ、探針棒の再使用が困難となることがあった。探針
棒は、製作に手間がかかり、このため高価であり、再使
用ができない場合には測定のための費用が高くなり、望
ましくない。[Problem to be solved by the invention] However,
If the soil is hard, for example, when the probe is driven into the probe with a hammer, the probe is repeatedly subjected to an impact load, which causes the internal thermocouple to separate and the probe itself to bend, causing In some cases, it was difficult to reuse the needle bar. The probe bar is cumbersome to manufacture and therefore expensive, and if not reusable, the cost for the measurement is high and undesirable.
【０００５】従って、本考案の目的は、探針棒に衝撃荷
重をかけることなく探針棒を土中へと挿入することがで
き、探針棒の損傷を避け、再使用を可能にし、土壌の熱
抵抗測定のためのコストを低減できる土壌熱抵抗測用探
針棒挿入装置を提供することである。Accordingly, an object of the present invention is to enable the probe bar to be inserted into the soil without applying an impact load to the probe bar, avoiding damage to the probe bar, enabling reuse, and enabling soil re-use. It is an object of the present invention to provide a probe insertion device for measuring soil thermal resistance which can reduce the cost for measuring the thermal resistance of the soil.
【０００６】[0006]
【課題を解決するための手段】上記目的は本考案に係る
土壌熱抵抗測定用探針棒挿入装置にて達成される。要約
すれば本考案は、土壌熱抵抗測定のための熱源及び熱電
対を内部に装備にした探針棒を着脱自在に把持するため
のクランプ手段と、前記クランプ手段を上下動するため
の駆動押圧手段と、前記駆動押圧手段を取付け、仮アン
カーにて地面に仮固定される基台とを有し、前記クラン
プ手段は前記探針棒を把持する一対のクランプ部材と、
前記一対のクランプ部材を接離可能とするトグルクラン
プ機構とを有し、前記駆動押圧手段は連結部材を介して
前記一対のクランプ部材の一方の部材に連結された油圧
シリンダーを備えることを特徴とする土壌熱抵抗測定用
探針棒挿入装置である。The above object is achieved by the probe rod insertion device for measuring soil thermal resistance according to the present invention. In summary, the present invention provides a clamp means for detachably holding a probe bar equipped with a heat source and a thermocouple for measuring soil thermal resistance, and a driving press for vertically moving the clamp means. Means, a base attached to the drive pressing means, temporarily fixed to the ground with a temporary anchor, the clamp means, a pair of clamp members for gripping the probe bar,
A toggle clamp mechanism that enables the pair of clamp members to be brought into and out of contact with each other, wherein the drive pressing unit includes a hydraulic cylinder connected to one of the pair of clamp members via a connecting member. This is a probe rod insertion device for measuring soil thermal resistance.
【０００７】[0007]
【実施例】以下、本考案に係る土壌熱抵抗測定用探針棒
挿入装置を図面に則して更に詳しく説明する。図１を参
照すると、本実施例において、本考案の土壌熱抵抗測定
用探針棒挿入装置は、板状の基台１を備え、基台１の中
央には探針棒挿入用のガイド穴１３が設けられている。
更に、基台１には、ガイド穴１３の左右に位置して駆動
押圧手段、即ち、本実施例では油圧シリンダー２、２が
配設され、その頂部にはピストンロッド２Ａ、２Ａが上
下動可能に延在している。ピストンロッド２Ａ、２Ａ
は、側方に延びる連結部材３、３の一端が固着されてお
り、該連結部材３、３の他端には互いに対向してクラン
プ手段４が設けられている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a probe rod insertion device for measuring soil thermal resistance according to the present invention. Referring to FIG. 1, in the present embodiment, the probe insertion device for measuring soil thermal resistance according to the present invention includes a plate-like base 1, and a guide hole for inserting the probe bar in the center of the base 1. 13 are provided.
Further, the base 1 is provided with driving and pressing means, that is, hydraulic cylinders 2 and 2 in this embodiment, which are located on the left and right of the guide hole 13, and the piston rods 2 </ b> A and 2 </ b> A can move up and down at the top. Extends. Piston rod 2A, 2A
One end of each of the connecting members 3 and 3 extending laterally is fixed, and clamp means 4 are provided at the other ends of the connecting members 3 and 3 so as to face each other.
【０００８】クランプ手段４は、図２に詳しく図示され
るように、半円形状の把持部４Ａ、４Ｂを持ったクラン
プ部材４Ｃ、４Ｄを具備しており、従来公知のトグルク
ランプ機構６、６によって接離可能に対向している。
又、把持部４Ａ、４Ｂの半円形内部には半円筒状の弾性
支持体、例えば、ネオプレーンゴム５、５などが貼着さ
れており、トグルクランプ機構６、６を操作することに
よって、探針棒１２の胴部を左右からしっかりと把持す
ることができる。As shown in detail in FIG. 2, the clamp means 4 includes clamp members 4C and 4D having semicircular grips 4A and 4B, and a conventionally known toggle clamp mechanism 6,6. And can be separated from each other.
Further, a semi-cylindrical elastic support, for example, neoprene rubber 5, 5 or the like is adhered to the inside of the semicircle of the gripping portions 4A, 4B, and the tip is operated by operating the toggle clamp mechanisms 6, 6. The body of the rod 12 can be firmly grasped from the left and right.
【０００９】なお、本実施例では、クランプ部材４Ｄは
一方の連結部材３の端部に一体に固着されているが、ク
ランプ部材４Ｃは他方の連結部材３に対して摺動可能に
嵌合してあり、トグルクランプ機構６、６による探針棒
１２のクランプ動作を容易にしている。In this embodiment, the clamp member 4D is integrally fixed to the end of one connecting member 3, but the clamp member 4C is slidably fitted to the other connecting member 3. Thus, the clamp operation of the probe bar 12 by the toggle clamp mechanisms 6, 6 is facilitated.
【００１０】油圧シリンダー２、２には連結ホース８、
８を介して分岐箱１１が連結してあり、油圧源（図示せ
ず）から供給ホース１０を介して供給された圧油を調節
バルブ９によって各油圧シリンダー２、２に配分するべ
く構成される。The hydraulic cylinders 2 and 2 have connecting hoses 8 and
A branch box 11 is connected to the hydraulic cylinders 2 and 2 via a control valve 9 to distribute hydraulic oil supplied from a hydraulic source (not shown) via a supply hose 10 to the hydraulic cylinders 2 and 2. .
【００１１】上記構成の本考案に係る土壌熱抵抗測定用
探針棒挿入装置の作動について説明すると、先ず、基台
１を計測すべき地盤の上に置き、仮アンカー７にて地盤
に仮固定する。The operation of the probe insertion device for measuring soil thermal resistance according to the present invention having the above structure will be described. First, the base 1 is placed on the ground to be measured, and temporarily fixed to the ground by the temporary anchor 7. I do.
【００１２】次いで、トグルクランプ機構６、６を操作
してクランプ手段４にて探針棒１２を把持し固定する。
次に、油圧シリンダー２、２に圧油を供給し、調節バル
ブ９を操作してピストンロッド２Ａ、２Ａを降下し、探
針棒１２を土中へと強制的に押入せしめる。Then, the probe clamp 12 is gripped and fixed by the clamp means 4 by operating the toggle clamp mechanisms 6 and 6.
Next, pressurized oil is supplied to the hydraulic cylinders 2 and 2, and the adjusting valve 9 is operated to lower the piston rods 2A and 2A, thereby forcing the probe bar 12 into the soil.
【００１３】従って、本考案の装置によると、探針棒１
２に衝撃荷重がかかることなく、探針棒１２を土中へと
挿入することができる。従って、探針棒内部の熱電対に
剥離を起こさせることなく、探針棒１２自体に曲がりを
生じることもなく、繰り返し使用することができる。ま
た、クランプ手段４として、一対のクランプ部材４Ｃ、
４Ｄと、このクランプ部材４Ｃ、４Ｄを接離可能とする
トグルクランプ機構６とを具備することにより、探針棒
１２の胴部を左右からしっかり、かつすばやく把持する
ことができ、現場での操作性が良好である。Therefore, according to the device of the present invention, the probe bar 1
The probe bar 12 can be inserted into the soil without an impact load being applied to the probe 2. Therefore, the probe can be used repeatedly without causing the thermocouple inside the probe bar to peel off and without causing the probe bar 12 to bend. Further, a pair of clamp members 4C,
By including the 4D and the toggle clamp mechanism 6 that allows the clamp members 4C and 4D to come and go, the body of the probe bar 12 can be firmly and quickly gripped from the left and right, and can be operated on site. The properties are good.
【００１４】実際問題として、上記圧油の調節には次の
ような計算がなされる。即ち、地盤の許容地耐力を１．
３〜２．６kg/cm2（固い地盤）とし、探針棒１２の直径
を２０mmとすると、その断面積（Ａ）は、Ａ＝３．１４
cm2 であり、又、探針棒１２は地耐力以上の力にて土中
へと押入可能であるから、今、例えば５kg/cm2が探針棒
１２に加えられるとすれば、挿入圧力（Ｐ）は、Ｐ＝
３．１４×５≒１６kgとなる。As a practical matter, the following calculation is made for the adjustment of the pressure oil. That is, the allowable ground bearing capacity of the ground is 1.
Assuming that the probe bar 12 is 3 to 2.6 kg / cm 2 (hard ground) and the diameter of the probe bar 12 is 20 mm, the sectional area (A) is A = 3.14.
cm 2 , and the probe bar 12 can be pushed into the soil with a force higher than the earth bearing force. Therefore, if, for example, 5 kg / cm 2 is applied to the probe bar 12, the insertion pressure (P) is P =
3.14 x 5１４16 kg.
【００１５】従って、油圧シリンダー２、２の圧力を、
例えば１０ton に設定すると共に、トグルクランプ機構
６、６の締め付け力を２４０kg/cm2、弾性支持体５と探
針棒１２との摩擦係数を０．３〜０．５とすると、クラ
ンプ４の把持力（Ｆ）がＦ＝（０．３〜０．５）×２４
０＝７２kg〜１２０kgとなり、この値は１６kgより遥か
に大となり、本考案の装置は極めて有効に稼動し得る。Therefore, the pressure of the hydraulic cylinders 2, 2 is
For example, if the tongue is set to 10 tons, the tightening force of the toggle clamp mechanisms 6, 6 is 240 kg / cm 2 , and the coefficient of friction between the elastic support 5 and the probe bar 12 is 0.3 to 0.5, the clamp 4 is gripped. Force (F) is F = (0.3-0.5) × 24
0 = 72 kg to 120 kg, which is much larger than 16 kg, and the device of the present invention can operate very effectively.
【００１６】なお、上記実施例では、探針棒１２を押圧
する駆動押圧手段として、油圧シリンダー２、２を使用
したが、パンダジャッキーのような螺子機構を使用した
駆動押圧手段をも採用し得る。Although the hydraulic cylinders 2 and 2 are used as the driving and pressing means for pressing the probe bar 12 in the above embodiment, a driving and pressing means using a screw mechanism such as a panda jackie may be employed. .
【００１７】[0017]
【考案の効果】本考案に係る土壌熱抵抗測定用探針棒挿
入装置は、以上詳述したように、熱源及び熱電対を内部
に装備した探針棒を土壌中に挿入して土壌の熱抵抗を測
定する際に、探針棒をクランプ手段で着脱自在に把持す
ると共に、該クランプ手段を上下動する油圧シリンダー
あるいは螺子機構を備えた駆動押圧手段を基台上に配設
し、基台をを仮アンカーを介して地面に固定するように
構成されるので、探針棒に衝撃荷重をかけることなく土
中に挿入することができ、従って、探針棒の損傷を避
け、再使用を可能にし、測定費用を低減できるなどの効
果を有し、実用上有益である。また、クランプ手段とし
て、一対のクランプ部材と、このクランプ部材を接離可
能とするトグルクランプ機構とを具備することにより、
探針棒の胴部を左右からしっかり、かつすばやく把持す
ることができ、現場での操作性が良好である。As described in detail above, the probe bar insertion device for measuring soil thermal resistance according to the present invention inserts a probe bar equipped with a heat source and a thermocouple into the soil to heat the soil. When measuring the resistance, the probe bar is detachably gripped by the clamp means, and a hydraulic press or a drive pressing means provided with a screw mechanism for vertically moving the clamp means is provided on the base. Is designed to be fixed to the ground via a temporary anchor, so that it can be inserted into the soil without impact load on the probe bar, thus avoiding damage to the probe bar and reducing reuse. This has the effect of making it possible to reduce the measurement cost, and is practically useful. In addition, by providing a pair of clamp members and a toggle clamp mechanism that allows the clamp members to come and go as the clamp means,
The body of the probe bar can be firmly and quickly gripped from the left and right, and the operability on site is good.
【図１】本考案の土壌熱抵抗測用探針棒挿入装置の斜視
図である。FIG. 1 is a perspective view of a probe bar insertion device for measuring soil thermal resistance according to the present invention.
【図２】クランプ手段の詳細斜視図である。FIG. 2 is a detailed perspective view of a clamping means.
１ 基台 ２ 油圧シリンダー（駆動押圧手段） ２Ａ ピストンロッド ４ クランプ手段 ６ トグルクランプ機構 Reference Signs List 1 base 2 hydraulic cylinder (drive pressing means) 2A piston rod 4 clamping means 6 toggle clamp mechanism
Claims (1)
を内部に装備にした探針棒を着脱自在に把持するための
クランプ手段と、前記クランプ手段を上下動するための
駆動押圧手段と、前記駆動押圧手段を取付け、仮アンカ
ーにて地面に仮固定される基台とを有し、前記クランプ
手段は前記探針棒を把持する一対のクランプ部材と、前
記一対のクランプ部材を接離可能とするトグルクランプ
機構とを有し、前記駆動押圧手段は連結部材を介して前
記一対のクランプ部材の一方の部材に連結された油圧シ
リンダーを備えることを特徴とする土壌熱抵抗測定用探
針棒挿入装置。1. Clamping means for detachably holding a probe bar equipped with a heat source and a thermocouple for measuring soil thermal resistance therein, and drive pressing means for vertically moving said clamp means. , attached to the drive pressing means, and a base on which is temporarily fixed to the ground at the temporary anchor, the clamp
The means comprises a pair of clamp members for gripping the probe bar,
Toggle clamp that allows the pair of clamp members to be connected and separated
A driving mechanism, wherein the driving and pressing means is
The hydraulic system connected to one of the pair of clamp members
A probe rod insertion device for measuring soil thermal resistance, comprising a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991033576U JP2552888Y2 (en) | 1991-04-12 | 1991-04-12 | Probe rod insertion device for soil thermal resistance measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991033576U JP2552888Y2 (en) | 1991-04-12 | 1991-04-12 | Probe rod insertion device for soil thermal resistance measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04120342U JPH04120342U (en) | 1992-10-28 |
| JP2552888Y2 true JP2552888Y2 (en) | 1997-10-29 |
Family
ID=31916212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991033576U Expired - Lifetime JP2552888Y2 (en) | 1991-04-12 | 1991-04-12 | Probe rod insertion device for soil thermal resistance measurement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2552888Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009516850A (en) * | 2005-11-23 | 2009-04-23 | エルジー・ケム・リミテッド | Temperature measuring means and method for tubular fixed bed catalytic reactor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5894348A (en) * | 1981-11-27 | 1983-06-04 | Fumihiko Masuda | Preparation of spongy cake |
| JPS6244920A (en) * | 1985-08-23 | 1987-02-26 | 株式会社東芝 | Vacuum deficiency detector for vacuum breaker |
-
1991
- 1991-04-12 JP JP1991033576U patent/JP2552888Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009516850A (en) * | 2005-11-23 | 2009-04-23 | エルジー・ケム・リミテッド | Temperature measuring means and method for tubular fixed bed catalytic reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04120342U (en) | 1992-10-28 |
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