JPH076237Y2 - Cutter bit mounting structure - Google Patents

Cutter bit mounting structure

Info

Publication number
JPH076237Y2
JPH076237Y2 JP10940489U JP10940489U JPH076237Y2 JP H076237 Y2 JPH076237 Y2 JP H076237Y2 JP 10940489 U JP10940489 U JP 10940489U JP 10940489 U JP10940489 U JP 10940489U JP H076237 Y2 JPH076237 Y2 JP H076237Y2
Authority
JP
Japan
Prior art keywords
cutter
cutter bit
bit
cutter head
dovetail groove
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
Application number
JP10940489U
Other languages
Japanese (ja)
Other versions
JPH0350691U (en
Inventor
陸雄 奥丁
弘 竹田
知明 花岡
義生 遠藤
良博 久利
啓佑 中村
勇一 佐々木
聖司 内藤
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.)
Hitachi Zosen Corp
Original Assignee
Hitachi Zosen Corp
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 Hitachi Zosen Corp filed Critical Hitachi Zosen Corp
Priority to JP10940489U priority Critical patent/JPH076237Y2/en
Publication of JPH0350691U publication Critical patent/JPH0350691U/ja
Application granted granted Critical
Publication of JPH076237Y2 publication Critical patent/JPH076237Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Description

【考案の詳細な説明】 産業上の利用分野 本考案はたとえばシールド掘進機のカッタヘッドに配設
されるカッタビットの取付け構造に関する。
DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a mounting structure for a cutter bit provided in a cutter head of a shield machine, for example.

従来の技術 たとえばシールド掘進機において、第11図に示すよう
に、シールド本体の前部に回転自在に支持されるカッタ
ヘッド1の前面には、両側に土砂取入口2が形成された
半径方向のカッタスポーク3に複数のカッタビット4が
取付けられ、外周部のカッタ面板9には外周カッタビッ
ト5とか取付けられている。前記カッタビット4は、第
9図(a)(b)に示すように、カッタスポーク3に溶
接により突設されて正面視がコの字形の支持部材6に基
端部が係合されるとともに、2本の固定ボルト7により
取付けられる。また、第10図(a)(b)に示すよう
に、カッタビット4とカッタスポーク3とが隅肉溶接8
により全周にわたって接合され取付けられている。
2. Description of the Related Art In a shield machine, for example, as shown in FIG. 11, a cutter head 1 rotatably supported by a front portion of a shield main body has a front surface of a cutter head 1 and a sand intake port 2 formed on both sides thereof in a radial direction. A plurality of cutter bits 4 are attached to the cutter spokes 3, and an outer peripheral cutter bit 5 or the like is attached to the cutter face plate 9 at the outer peripheral portion. As shown in FIGS. 9 (a) and 9 (b), the cutter bit 4 is projected on the Kattus pork 3 by welding so that the base end of the cutter bit 4 is engaged with the support member 6 having a U-shape in front view. It is attached by two fixing bolts 7. Further, as shown in FIGS. 10 (a) and 10 (b), the cutter bit 4 and the cutas pork 3 are fillet welded 8.
Are joined and attached over the entire circumference.

考案が解決しようとする課題 上記従来構成によれば、カッタビット4,5に切削力(せ
ん断力)F1が加わるとともに、カッタビット4,5をカッ
タヘッド1から引き剥がす方向の分離力F2が加わると、
固定ボルト7が破断や変形したり、または溶接部8が破
損しやすい。その結果、カッタビット4がカッタヘッド
1から脱落したり、また位置ずれしたり、さらに固定ボ
ルト6の変形により摩耗したカッタビット4の交換が困
難になるおそれがあった。
According to the above conventional configuration, the cutting force (shearing force) F 1 is applied to the cutter bits 4 and 5, and the separation force F 2 in the direction of peeling the cutter bits 4 and 5 from the cutter head 1 is also applied. Is added,
The fixing bolt 7 is easily broken or deformed, or the welded portion 8 is easily damaged. As a result, the cutter bit 4 may fall off from the cutter head 1, may be displaced, and the cutter bit 4 worn by the deformation of the fixing bolt 6 may be difficult to replace.

本考案は上記問題点を解決して、取付強度が大きく、脱
落や位置ずれを防止できるカッタビットの取付け構造を
提供することを目的とする。
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a mounting structure for a cutter bit that has a large mounting strength and can prevent falling and displacement.

課題を解決するための手段 上記問題点を解決するために本考案は、カッタヘッドの
前面とカッタビットの下面の一方にあり溝を形成すると
ともに、他方に前記あり溝に係合可能な係合部を形成
し、この係合部をあり溝に係合した状態でカッタビット
をカッタヘッドに固定する固定手段を設けたものであ
る。
Means for Solving the Problems In order to solve the above-mentioned problems, the present invention forms a dovetail groove on one of the front surface of a cutter head and the lower surface of a cutter bit, and engages with the dovetail groove on the other side. And a fixing means for fixing the cutter bit to the cutter head with the engaging portion engaged with the dovetail groove.

作用 上記構成によれば、カッタヘッド前面に沿う切削力を、
カッタビットの係合部のカッタヘッド前面に沿う断面で
支持するとともに、カッタビットをカッタヘッドから引
き剥そうとする離間力を、あり溝両側部の傾斜面で支持
することができるので、大きい取付強度が得られ、カッ
タビットの脱落や位置ずれを防止できる。
Action According to the above configuration, the cutting force along the front face of the cutter head,
Supporting a cross section of the engaging part of the cutter bit along the front face of the cutter head, and separating force for pulling the cutter bit away from the cutter head can be supported by the inclined surfaces on both sides of the dovetail groove, so that a large installation is possible. Strength can be obtained, and the cutter bit can be prevented from falling off and being displaced.

実施例 以下本考案の一実施例を第1図〜第5図に基づいて説明
する。従来例と同一部材は同一符号を付して説明する。
Embodiment An embodiment of the present invention will be described below with reference to FIGS. The same members as those in the conventional example will be described with the same reference numerals.

11はカッタヘッド1のカッタスポーク3前面に形成され
たあり溝で、土砂取入口2に臨む接線方向に形成され
る。カッタビット12の下面にはこのあり溝11に係合可能
な係合部13が形成され、土砂取入口2側の開口端11aに
係合部13を嵌め合わしてカッタスポーク3側に摺動する
ことにより、あり溝11両側部の傾斜受面11bに係合部13
の傾斜面13aを係合して、カッタビット12をカッタスポ
ーク3に装着することができる。14は固定手段の一例の
溶接部で、カッタビット12とカッタスポーク3前面との
当接面周囲とが隅肉溶接されてカッタビット12がカッタ
スポーク3に固定される。なお、溶接部14に換えて第6
図に示すように、係合部13およびあり溝11を貫通する2
本の固定ボルト15を使用してもよい。
Reference numeral 11 denotes a dovetail groove formed on the front surface of the cut head pork 3 of the cutter head 1, which is formed in a tangential direction facing the sediment intake 2. An engaging portion 13 that can engage with the dovetail groove 11 is formed on the lower surface of the cutter bit 12, and the engaging portion 13 is fitted to the opening end 11a on the side of the earth and sand intake 2 and slides toward the Kattus pork 3 side. As a result, the engaging portions 13 are formed on the inclined receiving surfaces 11b on both sides of the dovetail groove 11.
The cutter bit 12 can be attached to the cutas pork 3 by engaging the inclined surface 13a of the. Reference numeral 14 is a welded portion of an example of a fixing means, and the cutter bit 12 and the periphery of the contact surface of the front surface of the cutas pork 3 are fillet-welded to fix the cutter bit 12 to the cutas pork 3. In addition, instead of the welded portion 14, the sixth
As shown in the figure, 2 which penetrates the engaging portion 13 and the dovetail groove 2
Book fixing bolts 15 may be used.

第5図は外周カッタビット21の取付部を示し、あり溝22
は半径方向に形成され、外周カッタビット21の下面に形
成された係合部23を、カッタヘッド1のカッタ面板9外
周側の開口端22aからあり溝22内に摺動して係合し、溶
接24により固定される。
FIG. 5 shows the mounting portion of the outer cutter bit 21 and the dovetail groove 22.
Is formed in the radial direction, and engages the engaging portion 23 formed on the lower surface of the outer peripheral cutter bit 21 from the opening end 22a on the outer peripheral side of the cutter face plate 9 of the cutter head 1 into the groove 22 by sliding. It is fixed by welding 24.

上記実施例によれば、切削力F1に対しては係合部13,23
のカッタヘッド1の前面に沿う断面で支持し、前方への
分離力F2に対してはあり溝11,22の傾斜受面11b,22bで支
持することができる。したがって、切削力F1と分離力F2
の複合力が各カッタビット12,21に加わってもカッタビ
ット12,21を強固に支持することができ、溶接部14,24が
破断されたり、固定ボルト15が損傷されてカッタビット
12,21がカッタヘッド1から脱落することもない。摩耗
したカッタビット12,21の取換えも溶接部14,24の溶断ま
たは固定ボルト15の取外しにより容易に行うことができ
る。
According to the above-mentioned embodiment, the engaging portions 13, 23 with respect to the cutting force F 1 .
It can be supported by a cross section along the front surface of the cutter head 1 and can be supported by the inclined receiving surfaces 11b and 22b of the dovetail grooves 11 and 22 against the separating force F 2 toward the front. Therefore, cutting force F 1 and separation force F 2
Even if the combined force of is applied to each cutter bit 12,21, the cutter bit 12,21 can be firmly supported, the welded parts 14,24 are broken, the fixing bolt 15 is damaged, and the cutter bit is damaged.
12 and 21 will not fall off the cutter head 1. The worn cutter bits 12, 21 can be easily replaced by fusing the welds 14, 24 or removing the fixing bolts 15.

第7図と第8図はそれぞれあり溝31,41と係合部32,42の
他の実施例を示し、第7図は略ひし形状断面、第8図は
二又状断面としたものである。
7 and 8 show other embodiments of the dovetail grooves 31, 41 and the engaging portions 32, 42, respectively. FIG. 7 shows a substantially rhombus-shaped cross section, and FIG. 8 shows a bifurcated cross section. is there.

なお、上記各実施例においてカッタヘッド1側にあり溝
11,22,31,41を設け、カッタビット12,21に係合部13,23,
32,42を設けたが、その逆に形成することもできる。
It should be noted that in each of the above-mentioned embodiments, there is a groove on the cutter head 1 side.
11,22,31,41 provided, the cutter bit 12,21 to the engaging portion 13,23,
Although 32 and 42 are provided, they can be formed in the opposite way.

考案の効果 以上に述べたごとく本考案によれば、カッタヘッドの前
面に沿う切削力(せん断力)を、カッタビットの下面係
合部でカッタヘッド前面に沿う断面で支持するととも
に、カッタビットをカッタヘッドから引き剥そうとする
離間力を、あり溝両側部の傾斜面で支持することができ
るので、大きい取付強度が得られ、カッタビットの脱落
や位置ずれを防止できる。また、固定手段に固定ボルト
を使用した場合には固定ボルトの変形も少くでき、カッ
タビットの取換え時の着脱も容易に行える。
As described above, according to the present invention, the cutting force (shearing force) along the front surface of the cutter head is supported by the lower surface engaging portion of the cutter bit in the cross section along the front surface of the cutter head, and the cutting bit is supported. Since the separating force for pulling it away from the cutter head can be supported by the inclined surfaces on both sides of the dovetail groove, a large attachment strength can be obtained, and the cutter bit can be prevented from falling off or being displaced. Further, when a fixing bolt is used as the fixing means, the deformation of the fixing bolt can be reduced and the cutter bit can be easily attached and detached when it is replaced.

【図面の簡単な説明】[Brief description of drawings]

第1図〜第5図は本考案の一実施例を示し、第1図,第
2図,第3図はそれぞれカッタビット取付部の正面図,
側面図,平面図、第4図は同分解斜視図、第5図は外周
カッタビット取付部の斜視図、第6図は固定ボルトを使
用したカッタビット取付部の縦断面図、第7図,第8図
はそれぞれあり溝の変形例を示す正面図、第9図(a)
(b),第10図(a)(b)はそれぞれ従来例を示す平
面図および側面図、第11図はカッタヘッドの部分正面図
である。 1……カッタヘッド、2……土砂取入口、3……カッタ
スポーク、9……カッタ面板、11……あり溝、11b……
傾斜受面、12……カッタビット、13……係合部、13a…
…傾斜面、14……溶接部、15……固定ボルト、21……外
周カッタビット、22……あり溝、22b……傾斜受面、23
……係合部、24……溶接部、31,41……あり溝、32,42…
…係合部、F1……切削力、F2……分離力。
1 to 5 show an embodiment of the present invention, and FIGS. 1, 2 and 3 are front views of a cutter bit mounting portion, respectively.
FIG. 4 is a side view, a plan view, FIG. 4 is an exploded perspective view of the same, FIG. 5 is a perspective view of an outer cutter bit mounting portion, and FIG. 6 is a longitudinal sectional view of the cutter bit mounting portion using a fixing bolt, FIG. FIG. 8 is a front view showing a modified example of the dovetail groove, and FIG. 9 (a).
(B), FIG. 10 (a) and (b) are respectively a plan view and a side view showing a conventional example, and FIG. 11 is a partial front view of a cutter head. 1 ... Cutter head, 2 ... Sediment intake, 3 ... Kattus pork, 9 ... Cutter face plate, 11 ... Dovetail, 11b ...
Inclined receiving surface, 12 ... Cutter bit, 13 ... Engaging portion, 13a ...
… Inclined surface, 14 …… Welded part, 15 …… Fixing bolt, 21 …… Outer cutter bit, 22 …… Dowel groove, 22b …… Inclined receiving surface, 23
...... Engagement part, 24 …… Welded part, 31,41 …… Dovetail groove, 32,42…
… Engaging part, F 1 …… Cutting force, F 2 …… Separation force.

───────────────────────────────────────────────────── フロントページの続き (72)考案者 遠藤 義生 大阪府大阪市西区江戸堀1丁目6番14号 日立造船株式会社内 (72)考案者 久利 良博 大阪府大阪市西区江戸堀1丁目6番14号 日立造船株式会社内 (72)考案者 中村 啓佑 大阪府大阪市西区江戸堀1丁目6番14号 日立造船株式会社内 (72)考案者 佐々木 勇一 大阪府大阪市西区江戸堀1丁目6番14号 日立造船株式会社内 (72)考案者 内藤 聖司 大阪府大阪市西区江戸堀1丁目6番14号 日立造船株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Creator Yoshio Endo 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Yoshihiro Kuri 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Within Hitachi Shipbuilding Co., Ltd. (72) Keisuke Nakamura 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Inside Hitachi Shipbuilding Co., Ltd. (72) Yuichi Sasaki 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Creator Seiji Naito 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】カッタヘッドの前面とカッタビットの下面
の一方にあり溝を形成するとともに、他方に前記あり溝
に係合可能な係合部を形成し、この係合部をあり溝に係
合した状態でカッタビットをカッタヘッドに固定する固
定手段を設けたことを特徴とするカッタビットの取付け
構造。
1. A dovetail groove is formed in one of a front surface of a cutter head and a lower surface of a cutter bit, and an engaging portion engageable with the dovetail groove is formed in the other, and the engaging portion is engaged with the dovetail groove. A structure for mounting a cutter bit, characterized in that a fixing means for fixing the cutter bit to the cutter head in a combined state is provided.
JP10940489U 1989-09-18 1989-09-18 Cutter bit mounting structure Expired - Lifetime JPH076237Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10940489U JPH076237Y2 (en) 1989-09-18 1989-09-18 Cutter bit mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10940489U JPH076237Y2 (en) 1989-09-18 1989-09-18 Cutter bit mounting structure

Publications (2)

Publication Number Publication Date
JPH0350691U JPH0350691U (en) 1991-05-16
JPH076237Y2 true JPH076237Y2 (en) 1995-02-15

Family

ID=31658001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10940489U Expired - Lifetime JPH076237Y2 (en) 1989-09-18 1989-09-18 Cutter bit mounting structure

Country Status (1)

Country Link
JP (1) JPH076237Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002349191A (en) * 2001-05-23 2002-12-04 Nkk Corp Cutter head for shield machine and shield machine using the same

Also Published As

Publication number Publication date
JPH0350691U (en) 1991-05-16

Similar Documents

Publication Publication Date Title
CA2107005A1 (en) Retaining Device
JPH076237Y2 (en) Cutter bit mounting structure
JPH1143920A (en) Pad fixing structure for fender impact receiving plate
US4095912A (en) Beam connection plate
JP3371449B2 (en) Frame cover structure of scooter type vehicle
JPS6231505Y2 (en)
JPS6039002A (en) Fixture for cutting chip
JP2671845B2 (en) Chair
JPH0515000Y2 (en)
JPH042220Y2 (en)
JPH0253316U (en)
JPH07180488A (en) Fitting method for roller cutter to shield machine
JP2714911B2 (en) Joint structure of shield segment
JPH0477037U (en)
JPS62134370A (en) Construction for steering wheel core bar
JPH0338416U (en)
JPS60135322U (en) Mounting structure of resin cutting edge
JPH085915Y2 (en) Motorcycle front frame structure
JPH0449948Y2 (en)
JPS585721Y2 (en) Excavation claw fixing structure to bucket
JPS629434Y2 (en)
JPH0430307U (en)
JPS6331118U (en)
JPH02136136U (en)
JPH0681593A (en) Segment joint