JPH06146767A - Wear detection function-equipped bit - Google Patents
Wear detection function-equipped bitInfo
- Publication number
- JPH06146767A JPH06146767A JP31596992A JP31596992A JPH06146767A JP H06146767 A JPH06146767 A JP H06146767A JP 31596992 A JP31596992 A JP 31596992A JP 31596992 A JP31596992 A JP 31596992A JP H06146767 A JPH06146767 A JP H06146767A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- wear
- radiation
- detection member
- detecting
- 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
Links
- 238000001514 detection method Methods 0.000 title abstract description 46
- 230000005855 radiation Effects 0.000 claims abstract description 25
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 239000000919 ceramic Substances 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 abstract description 7
- 238000011144 upstream manufacturing Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 7
- 238000005336 cracking Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000005219 brazing Methods 0.000 description 3
- 239000000941 radioactive substance Substances 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 229910052767 actinium Inorganic materials 0.000 description 1
- QQINRWTZWGJFDB-UHFFFAOYSA-N actinium atom Chemical compound [Ac] QQINRWTZWGJFDB-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、磨耗、チップの欠け、
割れによる損傷等を直接的又は間接的に検出することが
できるようにした掘削用のビットに関するものである。
例えば、密閉式、冷水式、ＴＢＭ式等のシールド掘進機
に使用する磨耗検知機能付ビットに関する発明である。BACKGROUND OF THE INVENTION The present invention relates to wear, chipping of chips,
The present invention relates to an excavating bit capable of directly or indirectly detecting damage due to cracking.
For example, the invention relates to a bit with a wear detecting function used in a shield machine such as a closed type, a cold water type, a TBM type, or the like.
【０００２】[0002]
【従来の技術】近年、シールド掘進機は大深度での使用
が増加するとともに大型化に伴い、カッタードラムが大
口径化し、使用ビット数も増加している。シールド掘進
機の大型化により故障の発生率の頻度が高くなり信頼性
も低下している。もし、シールド掘進機が故障した場合
は、故障個所の発見が難しく、修理も大変危険なものに
なる。そのためシールド掘進機では、計画路線の掘削終
了まで使用しなければならず、故障が許されないものと
なっている。特に、大型シールド掘進機でビットの割れ
や欠けによる故障の場合、ビットはカッタードラムの前
側に取付けてあるので、その故障の位置の特定はできな
い。切削速度の急速な低下が起こり、初めて故障が起こ
ったとわかり、ビットの損傷が判るのである。深度での
ビットの取り替えのための作業は、カッタードラムの後
側で行うにしても、危険な状態の作業のため大工事にな
る。安全性の点からもう１つ別のトンネルを掘削してカ
ッタードラムの前面にまで掘り進み前面に安全な作業空
間を設けたうえ、ビットを替える必要がある。2. Description of the Related Art In recent years, the shield machine has been used in large depths and has become larger in size, and the cutter drum has a larger diameter and the number of bits used has also increased. Due to the large size of shield machines, the frequency of occurrence of failures is increasing and reliability is also decreasing. If the shield machine breaks down, it will be difficult to find the broken point and repair will be very dangerous. Therefore, the shield machine must be used until the end of excavation on the planned route, and failure is not allowed. In particular, in the case of a failure due to cracking or chipping of the bit in a large shield machine, the bit is attached to the front side of the cutter drum, so the position of the failure cannot be specified. A sharp decrease in cutting speed occurred, and it was discovered that the failure had occurred for the first time, and the bit was damaged. Even if the work for replacing the bit at the depth is performed on the rear side of the cutter drum, it is a work in a dangerous state, which is a big work. From a safety point of view, it is necessary to excavate another tunnel to the front of the cutter drum to provide a safe working space on the front and replace the bit.
【０００３】[0003]
【発明が解決しようとする課題】ビットの取り替えのた
めには安全な作業空間が必要である。そのためビットの
取り替え時期の予測が重要であり、従来はビットの取り
替えの時期の予測は全くできなかった。A safe workspace is required for bit replacement. Therefore, it is important to predict the bit replacement time, and it has been impossible to predict the bit replacement time in the past.
【０００４】本発明は、上記従来技術の実情に鑑みてな
されたもので、ビットの磨耗、割れ、欠けによる故障等
が予測ができるようにした磨耗検知機能付ビットを提供
することを目的としている。The present invention has been made in view of the above-mentioned circumstances of the prior art, and it is an object of the present invention to provide a bit with a wear detecting function capable of predicting a failure or the like due to wear, cracking, or chipping of the bit. .
【０００５】[0005]
【課題を解決するための手段】本発明に係る磨耗検知機
能付ビットは、超硬合金又はセラミックスからなる掘削
用のビットにおいて、先端部の少なくとも１箇所以上に
極微量の放射線物質を有する放射線放出部材、又は、磁
気を帯有した検知部材を埋め込んでいる。A bit with wear detecting function according to the present invention is a bit for excavation made of cemented carbide or ceramics, which emits a radiation having an extremely small amount of a radioactive substance at least at one or more points of its tip. A member or a detection member having a magnetic band is embedded.
【０００６】[0006]
【作用】上記のように本発明の磨耗検知機能付ビット
は、例えば、超硬合金のチップをビット本体にロー付け
して構成している。このロー付けの前に、チップに穿孔
してその孔に単数又は複数の放射性同位元素を含ませて
形成した棒状、板状、球状等の放射線放出部材（検知部
材）を埋め込む等により磨耗検知機能を付加している。
この検知部材の取付位置は、ビットの先端部に少なくと
も１個所、特に磨耗し易い場所に埋め込む。このように
形成したビットをシールド掘進機の適宜の位置に装着し
て使用する。本発明の磨耗検知機能付ビットを装着した
シールド掘進機を動かし掘削した土砂中の放射線を検出
する。もし、土砂中で放射線が検出されなければ、ビッ
トは磨耗、欠け、割れ等の損耗がなく、原形のまま残っ
ていて使用できることがわかる。土砂中で検知部材の放
射線及び放射線量が検出されれば、その放射線量により
ビット先端の損耗量が判る。検知部材を取付ける位置と
放射線の特性を組合わせて使用することにより損耗した
ビットの位置、ビットの損耗量、欠けたビットの数等を
知ることができる。ビットでの放射線の特性、この特性
の数及びその特定の放射線量等を計数することにより、
全体の各ビットの状態が判る。各ビットの寿命の予測か
ら、取り替え時期の予想ができるので、安全な取り替え
作業場所の選定の準備ができ、これにより工事期間の短
縮及び工事費の軽減ができる。磁気を帯有した部材を用
いる場合も放射線物質と同様にビットを構成し、磁束密
度を測定すればよい。As described above, the wear detecting function bit of the present invention is constituted by, for example, brazing a cemented carbide tip on the bit body. Before this brazing, wear detection function is performed by embedding a rod-shaped, plate-shaped, or spherical radiation-emitting member (detecting member) formed by punching a chip and containing one or more radioisotopes in the hole. Is added.
The mounting position of the detection member is embedded in at least one position at the tip of the bit, particularly in a place where it is easily worn. The bit thus formed is used by being attached to an appropriate position of the shield machine. The shield machine equipped with the bit with a wear detecting function of the present invention is moved to detect radiation in the excavated earth and sand. If the radiation is not detected in the earth and sand, it can be seen that the bit remains in its original shape without wear, chipping, cracking, or other wear, and can be used. If the radiation and the radiation dose of the detection member are detected in the earth and sand, the wear amount of the tip of the bit can be known from the radiation dose. It is possible to know the position of the worn bit, the wear amount of the bit, the number of missing bits, etc. by using the position where the detection member is attached and the radiation characteristics in combination. By counting the characteristics of the radiation in bits, the number of this characteristic and its specific radiation dose, etc.
The state of each bit of the whole is known. Since it is possible to predict the replacement time from the prediction of the life of each bit, it is possible to prepare for the selection of a safe replacement work place, which can shorten the construction period and the construction cost. Even when a member having magnetism is used, a bit may be formed and the magnetic flux density may be measured in the same manner as the radiation substance.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。図１ないし図４は、本発明に係る磨耗検知機能付
ビットの第１実施例を説明するための図である。本発明
に係る損耗を検知する部材を取付けた磨耗検知機能付ビ
ット１は、ビット本体２に、進行方向の上流にチップ
３，３の２個を幅方向に並べて植え込み、下流にチップ
４，４の２個を幅方向に並べて植え込み、各切削チップ
３に検知部材５を取付けて構成している。このビット１
は、図示していないシールド掘進機のカッタードラムの
カッター面（前面）に、各ボルト挿通孔６にボルトを挿
通して、ねじ締めして装着する。Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are views for explaining a first embodiment of a bit with a wear detecting function according to the present invention. The wear detecting function bit 1 to which the member for detecting wear according to the present invention is attached, the two chips 3, 3 are implanted in the bit main body 2 in the width direction in the upstream of the traveling direction, and the chips 4, 4 are in the downstream. 2 are lined up in the width direction and implanted, and the detection member 5 is attached to each cutting tip 3. This bit 1
Is mounted by inserting bolts into the bolt insertion holes 6 on the cutter surface (front surface) of the cutter drum of a shield machine, not shown, and tightening the screws.
【０００８】チップ３は、それぞれ、例えば、ＷＣ−Ｃ
ｏ系からなる超硬合金で、これらの原料のタングステン
粉末、コバルト粉末等を所定の割合に秤量して混合し、
所要の形状にプレス成形して中間焼結し、次いで、本焼
結した後形研磨してその先端に切り歯を形成する。チッ
プ４も、チップ３と同様に、ＷＣ，Ｃｏ系からなる超硬
合金から作製している。ビット本体２は、特殊鋼から所
定の形状に、例えば、図１に示すように、２本平行に溝
２ａ，２ｂを穿設して形成している。熱処理した後、溝
２ａ及び２ｂにチップ３，３及びチップ４，４がそれぞ
れ嵌着又はロー付けして植込んでいる。検知部材５は、
チップ３をビット本体２に嵌着する前に、チップ３の元
部に孔３ａを穿設しこの孔３ａに埋め込んで、ビット本
体２に取付けている。The chips 3 are, for example, WC-C, respectively.
O-based cemented carbide, these raw materials tungsten powder, cobalt powder, etc. are weighed and mixed at a predetermined ratio,
It is press-formed into a desired shape, intermediately sintered, then main-sintered and then shape-polished to form a cutting tooth at its tip. Like the chip 3, the chip 4 is also made of a cemented carbide containing WC and Co. The bit main body 2 is formed of special steel in a predetermined shape, for example, by forming two grooves 2a and 2b in parallel as shown in FIG. After the heat treatment, the chips 3 and 3 and the chips 4 and 4 are fitted or brazed into the grooves 2a and 2b, respectively. The detection member 5 is
Before the chip 3 is fitted into the bit body 2, a hole 3a is formed in the base portion of the chip 3 and is embedded in the hole 3a to be attached to the bit body 2.
【０００９】検知部材５は、図４に示すように、放射能
を持った物質（例えばウラン系、アクチニウム系、トリ
ウム系）から放出する粒子、α線、β線、γ線、中性
子、Ｘ線、電磁波等のエネルギーを検出することのでき
る物質を用いて形成する。または、検知部材５に磁気を
帯有した物質、たとえば、フェライト系、アルニコ系、
ネオジウム系等磁気エネルギーを有する物質を用いて形
成する。本実施例によれば、ビット（チップ３）と検知
部材５が磨耗し、又はチップ３と検知部材５が欠けたり
割れたりして、一緒に損耗する。その放射線物質が土砂
流に混じって後方のポンプ室に送られる、それをポンプ
室の前又は後で放射線検知装置により放射線を測定する
と、チップ３の損耗状態を知ることができる。そして、
放射線の量を検出できるようにしておくと、許容損耗量
の推定が可能となる。また、その埋め込み位置によって
この検知部材５の放射線の特性を変えておくと、その特
性をを検出することによりビット刃先の損耗位置を把握
できる。As shown in FIG. 4, the detection member 5 includes particles, α rays, β rays, γ rays, neutrons, X rays emitted from a substance having radioactivity (for example, uranium type, actinium type, thorium type). , A substance capable of detecting energy such as electromagnetic waves is used. Alternatively, the detection member 5 has a magnetic material, for example, a ferrite-based material, an alnico-based material,
It is formed using a substance having magnetic energy such as neodymium. According to this embodiment, the bit (chip 3) and the detection member 5 are worn, or the chip 3 and the detection member 5 are chipped or cracked and worn together. The radioactive substance is mixed with the sediment flow and sent to the pump chamber at the rear side, and the radiation state of the radioactive substance is measured by a radiation detection device before or after the pump chamber, whereby the wear state of the tip 3 can be known. And
If the amount of radiation can be detected, the allowable amount of wear can be estimated. If the radiation characteristic of the detection member 5 is changed according to the embedded position, the wear position of the bit cutting edge can be grasped by detecting the characteristic.
【００１０】図５は損耗を検知する部材の他の実施例を
示す図である。本実施例によれば、検知部材７の断面形
状を長方形の板状に形成している。この検知部材７は、
上記の第１実施例の検知部材５とは断面形状が異なる。
本実施例の検知部材７は、上記実施例と同様に使用でき
るとともに、埋め込まずに溝を穿設し又は壁面に接着等
により取付けることができ、取付けが容易である。FIG. 5 is a diagram showing another embodiment of a member for detecting wear and tear. According to this embodiment, the detection member 7 is formed in a rectangular plate shape in cross section. This detection member 7
The sectional shape is different from that of the detection member 5 of the first embodiment.
The detection member 7 of the present embodiment can be used in the same manner as in the above-mentioned embodiment, and can be easily attached by forming a groove without embedding or attaching it to the wall surface by adhesion or the like.
【００１１】図６は検知部材のさらに他の実施例を示す
図である。本実施例によれば、検知部材８の長さをペレ
ット状に短く形成している。この検知部材８は、上記の
第１実施例の検知部材５とは長さが異なる。本実施例の
検知部材８は、その幅方向及び深さ（損耗量）方向に、
その放射線の特性を変えることにより、各ビットの損耗
状態を知ることができるので、シールド掘進機の各ビッ
トの寿命の予測ができ、ビットの取り替えの工事管理が
できる。FIG. 6 is a view showing still another embodiment of the detecting member. According to this embodiment, the length of the detection member 8 is formed into a pellet shape. The detection member 8 is different in length from the detection member 5 of the first embodiment described above. The detection member 8 of the present embodiment has a width direction and a depth (wear amount) direction,
By changing the characteristics of the radiation, the wear state of each bit can be known, so that the life of each bit of the shield machine can be predicted, and construction management for bit replacement can be performed.
【００１２】図７は本発明に係る損耗を検知する検知部
材を取付けた磨耗検知機能付ビットの第２実施例を示す
断面図である。本実施例による検知部材を取付けたビッ
ト９は、第１実施例とほぼ同様にビット本体２に、チッ
プ３をこの回転方向の上流側に幅方向に並べて植え込
み、下流側に幅方向に並べてチップ４を植え込み、各切
削チップ３に球状の検知部材の代わりに球状の検知部材
１０を取付けて構成している。この検知部材１０は１個
所の孔に深さを変えて複数個埋め込んで取付けている。
この検知部材１０は、上記のペレット状の検知部材８と
同様に使用できる。FIG. 7 is a cross-sectional view showing a second embodiment of a wear detecting bit having a detecting member for detecting wear according to the present invention. The bit 9 to which the detecting member according to the present embodiment is attached is substantially the same as the first embodiment, and the chips 3 are implanted in the bit main body 2 side by side in the width direction on the upstream side of this rotation direction and in the width direction on the downstream side. 4 is implanted, and a spherical detection member 10 is attached to each cutting tip 3 instead of the spherical detection member. The detection member 10 is attached by embedding a plurality of detection members 10 with different depths in one hole.
The detection member 10 can be used similarly to the pellet-shaped detection member 8 described above.
【００１３】図８ないし図１０は、本発明に係る損耗を
検知する検知部材を取付けた磨耗検知機能付ビットの第
３実施例を示す図である。本実施例のビット１１は、第
１実施例とは、幅方向に並べたチップの数と、検知部材
５の埋め込みの配置が異なっている。ビット本体１２の
回転方向の上流側にチップ１３ａ，１３ｂ，１３ｂ，１
３ａと幅方向に４つ植え込み、下流側にチップ１４，１
４，１４，１４と幅方向に４つ植え込んでいる。そし
て、端の各チップ１３ａにはその端部に検知部材５を２
個埋め込み、中央側のチップ１３ｂにはその中央部に検
知部材５を１個埋め込んでいる。本実施例のようにチッ
プの数が異なるビットでは、それに応じて検知部材の取
付け位置を変えてもよい。FIGS. 8 to 10 are views showing a third embodiment of a wear detecting function bit to which a detecting member for detecting wear according to the present invention is attached. The bit 11 of this embodiment is different from the first embodiment in the number of chips arranged in the width direction and the arrangement of embedding the detection member 5. The chips 13a, 13b, 13b, 1 are provided on the upstream side in the rotation direction of the bit body 12.
3a and 4 are implanted in the width direction, and chips 14, 1 are provided on the downstream side.
4, 14 and 14 are planted in the width direction. Then, each chip 13a at the end is provided with the detection member 5 at the end thereof.
One detection member 5 is embedded in the central portion of the chip 13b on the center side. For a bit having a different number of chips as in this embodiment, the mounting position of the detection member may be changed accordingly.
【００１４】図１１及び図１２は、第２の発明に係る損
耗を検知する検知部材を取付けた磨耗検知機能付ビット
の実施例を示す図である。本実施例のビット１６は、上
記第１ないし第３実施例のビットの形状とは異なり、図
１１に示すように単位刃の本体１７にローラタイプの
刃、例えば、１８ａ，１８ｂ，１８ｃを形成することに
より構成している。刃１８ａは、図１２に示すように、
本体１７に硬化肉盛１９を施すとともに検知部材５を埋
め込んだ超硬チップ２０を植え込むことにより刃内に放
射線を放射する物質を埋め込んでいる。超硬チップ２０
への検知部材５の埋め込みは、刃１８ａの円周方向に配
置する全ての超硬チップ２０にしなくてもよい。本実施
例のビット１６の配置した位置、各ビットの深さ（損耗
量）方向、各ビットの円周方向に、その放射線の特性を
変えることにより、各ビットの損耗状態を知ることがで
きる。FIG. 11 and FIG. 12 are views showing an embodiment of a bit with a wear detecting function to which a detecting member for detecting wear according to the second invention is attached. Unlike the shapes of the bits of the first to third embodiments, the bit 16 of this embodiment has roller type blades, for example, 18a, 18b and 18c, formed on the main body 17 of the unit blade as shown in FIG. It is configured by doing. The blade 18a, as shown in FIG.
A hard padding 19 is applied to the main body 17 and a cemented carbide tip 20 in which the detection member 5 is embedded is implanted to embed a substance that emits radiation in the blade. Carbide tip 20
The detection member 5 may not be embedded in all the cemented carbide chips 20 arranged in the circumferential direction of the blade 18a. The wear state of each bit can be known by changing the radiation characteristics of the position of the bit 16 of the present embodiment, the depth (wear amount) direction of each bit, and the circumferential direction of each bit.
【００１５】上記のように本発明によれば、検知部材を
ビットに埋め込んでいるので、その検知部材を検出する
ことによって、ビットの磨耗、欠け、割れ等による損耗
を知ることができる。そして、幅方向及び深さ（損耗
量）方向に、その検知部材の特性を変えることにより、
ビットの場所とビット刃先の損耗位置を知ることができ
るので、シールド掘進機に取付けられた全体のビットの
寿命の予測管理ができるようになる。なお、上記実施例
でチップを植え込む例を示したが、図１３に示すローラ
タイプのビットのように、ビットの刃２１を、チップを
植え込まない本体１７のみにより構成し、この刃内に検
知部材を埋め込んだたものとしてもよい。また、超硬合
金より形成する例で説明したが、セラミックス、その他
合金等から形成してもよい。また、ビットの磨耗、欠
け、割れ等による損耗を、検知部材が土砂と排出される
ときに検出する例で説明したが、カッタドラムの前面に
取付けてあるビットに検出器を近づけ、各ビットに残っ
ている放射線の特性及び放射線量を直接検出するように
してもよい。このようにすると残存量が直接わかるか
ら、より正確な寿命の予測ができる。As described above, according to the present invention, since the detection member is embedded in the bit, it is possible to know the wear of the bit due to wear, chipping, cracking or the like by detecting the detection member. Then, by changing the characteristics of the detection member in the width direction and the depth (wear amount) direction,
Since the location of the bit and the wear position of the bit cutting edge can be known, it becomes possible to predict and manage the life of the entire bit mounted on the shield machine. Although an example of implanting a tip has been shown in the above-described embodiment, like the roller type bit shown in FIG. 13, the blade 21 of the bit is constituted only by the main body 17 in which the tip is not implanted, and the detection is made in this blade. The member may be embedded. Further, although the case of forming the cemented carbide has been described, it may be formed of ceramics or other alloys. Also, the wear due to wear, chipping, cracking, etc. of the bit was explained as an example of detecting when the detection member is discharged with earth and sand, but the detector is brought close to the bit mounted on the front surface of the cutter drum, The characteristics of the remaining radiation and the radiation dose may be directly detected. In this way, the remaining amount can be directly known, so that the life can be predicted more accurately.
【００１６】また、検知部材の取付けはチップの成形工
程中、例えば、タングステン、コバルト粉末を所定の割
合で混合し、プレス成形した後、この成形品中に検知部
材を埋め込み、中間焼結して取付けるようにするか、又
は本焼結後に埋め込むか、接着、ロー付け等により取付
けてもよい。本発明のビットは上記実施例に限られず、
他の形状、用途等のものにも使用できる。また、検知部
材の形状は、上記実施例に限られるものでなく、球でも
角柱等であってもよく、適宜の形状、寸法に設定できる
と同時に、取付け位置も適宜に変更できる。The mounting of the detecting member is carried out by mixing, for example, tungsten and cobalt powders at a predetermined ratio during the chip forming process and press-molding, then embedding the detecting member in the molded product and performing intermediate sintering. They may be attached or embedded after the main sintering, or attached by adhesion, brazing, or the like. The bit of the present invention is not limited to the above embodiment,
It can also be used for other shapes and purposes. Further, the shape of the detection member is not limited to the above embodiment, and may be a sphere, a prism, or the like, and can be set to an appropriate shape and size, and at the same time, the mounting position can be appropriately changed.
【００１７】[0017]
【発明の効果】本発明に係る磨耗、損傷を検知する検知
部材を取付けた磨耗検知機能付ビットは、ビットが磨
耗、割れ、欠け等により損耗した際、その損耗状態を放
射線又は磁束密度で検出するので、残りのビットの許容
損耗量等の推定が可能となり、それに伴いビットの寿命
の予測管理が可能となる。その結果、安全対策、正確な
作業計画ができる。The bit with a wear detecting function according to the present invention, which is equipped with a detecting member for detecting wear or damage, detects the wear state by radiation or magnetic flux density when the bit is worn, broken or chipped. Therefore, it is possible to estimate the permissible wear amount of the remaining bits, etc., and it is possible to predict and manage the life of the bits accordingly. As a result, safety measures and accurate work plans can be made.
【図１】本発明による損耗を検知する検知部材を取付け
た磨耗検知機能付ビットの第１実施例を示す図２のＡ−
Ａ線に沿う断面図である。FIG. 1 is a view showing a first embodiment of a bit with a wear detecting function provided with a detecting member for detecting wear according to the present invention;
It is sectional drawing which follows the A line.
【図２】上記実施例の平面図である。FIG. 2 is a plan view of the above embodiment.
【図３】上記実施例の側面図である。FIG. 3 is a side view of the above embodiment.
【図４】上記実施例の検知部材を示す図である。FIG. 4 is a view showing a detection member of the above embodiment.
【図５】検知部材の他の実施例を示す図である。FIG. 5 is a diagram showing another embodiment of the detection member.
【図６】検知部材のさらに他の実施例を示す図である。FIG. 6 is a view showing still another embodiment of the detection member.
【図７】本発明によるビットの第２実施例を示す断面図
である。FIG. 7 is a sectional view showing a second embodiment of the bit according to the present invention.
【図８】本発明によるビットの第３実施例を示す平面図
である。FIG. 8 is a plan view showing a third embodiment of the bit according to the present invention.
【図９】図８のＢ−Ｂ線に沿う断面図である。9 is a sectional view taken along the line BB of FIG.
【図１０】図９のＣ−Ｃ線に沿う断面図である。10 is a cross-sectional view taken along the line CC of FIG.
【図１１】本発明によるビットの第４実施例を示す側面
図である。FIG. 11 is a side view showing a fourth embodiment of the bit according to the present invention.
【図１２】図１２のビットの刃先の拡大断面図である。12 is an enlarged cross-sectional view of the cutting edge of the bit of FIG.
【図１３】本発明によるビットのさらに他の実施例を示
す側面図である。FIG. 13 is a side view showing still another embodiment of the bit according to the present invention.
１，９，１１，１６ ビット ２，１７ ビット本体 ３，１３ａ，１３ｂ，２０ チップ ５，７，８，１０ 検知部材 1, 9, 11, 16 bits 2, 17 bits Main body 3, 13a, 13b, 20 Chips 5, 7, 8, 10 Detection member
───────────────────────────────────────────────────── フロントページの続き (72)発明者 本並 正信 大阪府松原市新堂３丁目16番地スターロイ 産業株式会社内 (72)発明者 佐藤 守 兵庫県川西市萩原台西２丁目193 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masanobu HONAMI 3-16 Shindo, Matsubara-shi, Osaka, inside Starroy Sangyo Co., Ltd. (72) Mamoru Sato 2-193, Hagiwaradai Nishi, Kawanishi-shi, Hyogo
Claims (3)
なる掘削用のビットにおいて、少なくとも１箇所以上に
放射線放出部材を取付けていることを特徴とする磨耗検
知機能付ビット。1. A bit with a wear detecting function, characterized in that, in a bit for excavation made of a cemented carbide or ceramic chip, a radiation emitting member is attached at least at one or more places.
削用のビットにおいて、回転刃内に放射線放出部材を取
付けていることを特徴とする磨耗検知機能付ビット。2. A bit for excavation made of cemented carbide, ceramics or the like, characterized in that a radiation emitting member is attached to the inside of a rotary blade.
用のビットにおいて、少なくとも１箇所以上に磁気を帯
有した検知部材を取付けていることを特徴とする磨耗検
知機能付ビット。3. A bit with a wear detecting function, wherein a bit for excavation made of cemented carbide or ceramics is provided with a detecting member having a magnetism at at least one place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31596992A JPH06146767A (en) | 1992-10-30 | 1992-10-30 | Wear detection function-equipped bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31596992A JPH06146767A (en) | 1992-10-30 | 1992-10-30 | Wear detection function-equipped bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06146767A true JPH06146767A (en) | 1994-05-27 |
Family
ID=18071767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31596992A Pending JPH06146767A (en) | 1992-10-30 | 1992-10-30 | Wear detection function-equipped bit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06146767A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010065808A3 (en) * | 2008-12-04 | 2010-08-19 | Baker Hughes Incorporated | Method of monitoring wear of rock bit cutters |
| CN102287199A (en) * | 2011-06-24 | 2011-12-21 | 北京市三一重机有限公司 | Current interruption inductive multistage abrasion detection tool for shield machine |
| JP2019027131A (en) * | 2017-07-31 | 2019-02-21 | 国立大学法人 東京大学 | Apparatus and method for notifying tunnel excavator abnormality |
| JP2019512055A (en) * | 2016-02-29 | 2019-05-09 | ザ・サウス・アフリカン・ニュークリア・エナジー・コーポレーション・（エスオーシー）・リミテッド | Tagged drilling element |
| JP2023122164A (en) * | 2022-02-22 | 2023-09-01 | 株式会社大林組 | WEAR CONTROL SYSTEM AND WEAR CONTROL METHOD |
-
1992
- 1992-10-30 JP JP31596992A patent/JPH06146767A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010065808A3 (en) * | 2008-12-04 | 2010-08-19 | Baker Hughes Incorporated | Method of monitoring wear of rock bit cutters |
| US8006781B2 (en) | 2008-12-04 | 2011-08-30 | Baker Hughes Incorporated | Method of monitoring wear of rock bit cutters |
| US8757290B2 (en) | 2008-12-04 | 2014-06-24 | Baker Hughes Incorporated | Method of monitoring wear of rock bit cutters |
| CN102287199A (en) * | 2011-06-24 | 2011-12-21 | 北京市三一重机有限公司 | Current interruption inductive multistage abrasion detection tool for shield machine |
| JP2019512055A (en) * | 2016-02-29 | 2019-05-09 | ザ・サウス・アフリカン・ニュークリア・エナジー・コーポレーション・（エスオーシー）・リミテッド | Tagged drilling element |
| JP2019027131A (en) * | 2017-07-31 | 2019-02-21 | 国立大学法人 東京大学 | Apparatus and method for notifying tunnel excavator abnormality |
| JP2023122164A (en) * | 2022-02-22 | 2023-09-01 | 株式会社大林組 | WEAR CONTROL SYSTEM AND WEAR CONTROL METHOD |
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