JPH0654019B2 - Drilling blade for root cutting of trencher - Google Patents

Drilling blade for root cutting of trencher

Info

Publication number
JPH0654019B2
JPH0654019B2 JP60037605A JP3760585A JPH0654019B2 JP H0654019 B2 JPH0654019 B2 JP H0654019B2 JP 60037605 A JP60037605 A JP 60037605A JP 3760585 A JP3760585 A JP 3760585A JP H0654019 B2 JPH0654019 B2 JP H0654019B2
Authority
JP
Japan
Prior art keywords
excavation
members
blade
chain
cutting
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
JP60037605A
Other languages
Japanese (ja)
Other versions
JPS61200228A (en
Inventor
啓次郎 片山
Original Assignee
株式会社片山製作所
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 株式会社片山製作所 filed Critical 株式会社片山製作所
Priority to JP60037605A priority Critical patent/JPH0654019B2/en
Publication of JPS61200228A publication Critical patent/JPS61200228A/en
Publication of JPH0654019B2 publication Critical patent/JPH0654019B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/10—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain with tools that only loosen the material, i.e. with cutter-type chains
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/08—Dredgers; Soil-shifting machines mechanically-driven with digging elements on an endless chain
    • E02F3/12—Component parts, e.g. bucket troughs
    • E02F3/14—Buckets; Chains; Guides for buckets or chains; Drives for chains
    • E02F3/142—Buckets; Chains; Guides for buckets or chains; Drives for chains tools mounted on buckets or chains which loosen the soil, e.g. cutting wheels, or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は、土壌の掘削用に使用されるトレンチヤの根
切り用掘削刃に関するもので、更に詳細には、土壌中に
侵入された樹木等の根切りあるいは根回し等に使用され
るトレンチヤの根切り用掘削刃に関するものである。Description: TECHNICAL FIELD The present invention relates to an excavating blade for root cutting of a trencher used for excavating soil, and more specifically, a tree or the like that has penetrated into soil. The present invention relates to an excavating blade for root cutting of a trencher used for root cutting or root turning.

［従来の技術］ 従来のこの種のトレンチヤの根切り用掘削刃は、第23図
に示すように、かなり広い掘削幅Ｗを何分割かにした幅
を有する複数の切削刃部材１が、それぞれ掘削深さ方向
の位置に対し、ほぼ一定位置に並んだ状態で掘削チエー
ンに適宜間隔を置いて複数配設されてなるか、又は、第
24図に示すように、いわゆるチエーンソーとほぼ同様の
構成をなし、かなり狭い掘削幅ｗとされる切削刃部材２
が掘削チエーン３に適宜間隔を置おいて複数配設され
（第25図及び第26図に示す）、掘削チエーン３には掘削
ブーム４の外周に形成される溝５に摺動可能に係止され
る凸部６が形成されてなる構成とされる。なお、７は根
部を示す。[Prior Art] A conventional excavating blade for root cutting of a trencher of this type has a plurality of cutting blade members 1 each having a width obtained by dividing a considerably wide excavating width W into several parts, as shown in FIG. A plurality of them are arranged at appropriate intervals in the excavation chain in a state where they are lined up at a substantially constant position with respect to the position in the excavation depth direction, or
As shown in FIG. 24, a cutting blade member 2 having a structure similar to that of a so-called chain saw and having a considerably narrow excavation width w.
Are provided at appropriate intervals on the excavation chain 3 (shown in FIGS. 25 and 26), and are slidably locked to the groove 5 formed on the outer periphery of the excavation boom 4 on the excavation chain 3. The projection 6 is formed. In addition, 7 shows a root part.

［発明が解決しようとする課題］ しかし、従来のトレンチヤの根切り用掘削刃は以上のよ
うであるから、まず第23図に示すものでは、掘削幅Ｗが
かなり広く、しかもほぼ同一形状の切削刃部材１を単に
複数掘削幅方向に並べた状態で掘削するため、少くとも
一つの切削刃部材１の幅をいきなり切削しなければなら
ず、したがって、消費馬力も大きくなり、掘削時の反動
も大きくなり作業能率及び性能を高めることが困難で、
また、一度に切削する幅がＷと広いため、根部等の切削
面があまりきれいにはいかず、植物の育成に悪影響を与
える等の問題がある。[Problems to be Solved by the Invention] However, since the conventional excavating blade for root cutting of the trencher is as described above, first, in the one shown in FIG. 23, the excavation width W is considerably wide and the cutting of substantially the same shape is performed. Since the blade members 1 are excavated in a state where they are simply arranged in the excavation width direction, at least one cutting blade member 1 has to be cut suddenly, and therefore, the horsepower consumption is increased and the recoil during excavation is also caused. It becomes large and it is difficult to improve work efficiency and performance,
Further, since the width of cutting at one time is as wide as W, there is a problem that the cutting surface such as the root portion is not so clean and the growth of plants is adversely affected.

また、第24図に示すものでは、一度に切削する幅がｗと
小であるため、消費馬力が小さくなり、小型軽量でかつ
掘削の切断面がきれいである等の利点があるが、しか
し、掘削ブームの幅も狭くしなければならず、第25図及
び第26図に示すように、使用に際し、前記溝５に土が詰
り易く、また凸部６及び溝５が摩耗し易いため、絶えず
その摺動部分に注油しなければならず、この油が植物等
に悪影響を与える等の問題がある。In addition, in the one shown in FIG. 24, since the width of cutting at one time is as small as w, there are advantages that the horsepower consumption is small, the cutting surface is small and lightweight, and the cut surface of excavation is clean, but The width of the excavation boom must also be narrowed, and as shown in FIG. 25 and FIG. 26, the groove 5 is easily clogged with soil during use, and the convex portion 6 and the groove 5 are easily worn. It is necessary to lubricate the sliding portion, and there is a problem that this oil adversely affects plants and the like.

［課題を解決するための手段］ この発明は以上に述べた事情に鑑みなされたもので、走
行可能な機体から外方に向つて起伏可能に突設される掘
削ブームに掘削チエーンが架設されてなるトレンチヤに
おいて、掘削刃(23)が、左右の鋸歯部材(24,25)と、左
右の切削刃部材(33,34)、破砕刃(38)とからなり、前記
左右の鋸歯部材(24,25)は互いに対称形をなし、それぞ
れ前記掘削チエーン(12)の外方へ向つて上部が張り出す
ように中央部が折曲されてなる板状の本体(27)と、この
本体(27)の掘削幅方向に鋸状に形成される側面刃部(28)
と、前記本体(27)の掘削深さ方向に向つて断面尖塔状で
鋸刃状の先刃部(29)と、移動方向前端部に形成される前
刃部(30)とから形成され、前記掘削チエーン(12)の掘削
方向方向において前記鋸歯部材(24,25)より後位に交互
に配設される前記左右の切削刃部材(33,34)は互いに対
称形をなしそれぞれ断面Ｌ字形の板状をなし、これら切
削刃部(35)が形成されており、かつ前記破砕刃(38)は前
記掘削チエーン(12)の数個所に前記左右の鋸歯部材(24,
25)及び左右の切削刃部材(33,34)より幅狭で中央部に形
成されてなるトレンチヤの根切り用掘削刃を提案するも
のである。[Means for Solving the Problems] The present invention has been made in view of the above-described circumstances, and an excavation chain is installed on a excavation boom that is provided so as to project upward and downward from a machine body that can travel. In the trencher consisting of, the excavating blade (23) is composed of left and right saw tooth members (24, 25), left and right cutting blade members (33, 34), and a crushing blade (38), and the left and right saw tooth members (24, 25). 25) are symmetrical to each other, and each has a plate-shaped main body (27) whose central part is bent so that the upper part thereof projects outward toward the outside of the drilling chain (12), and this main body (27). Side blade part (28) formed in a saw shape in the excavation width direction of
And a saw blade-shaped cutting edge portion (29) having a steeper cross-section toward the digging depth direction of the main body (27), and a leading edge portion (30) formed at the front end in the moving direction, The left and right cutting blade members (33, 34), which are alternately arranged rearward of the saw tooth members (24, 25) in the direction of excavation of the excavation chain (12), are symmetrical to each other and each have an L-shaped cross section. The cutting blade portion (35) is formed, and the crushing blade (38) is at the left and right sawtooth members (24, at several points of the excavation chain (12).
25) and the cutting blade members (33, 34) on the left and right sides, which are narrower than the cutting blade members (33, 34) and are formed in the central portion to propose a rooting excavating blade for a trencher.

［作用］ この発明掘削刃においては、消費馬力及び掘削時の反動
もあまり大きくなく、根部の切削面がよりきれいであ
り、また耐衝撃及び耐摩耗性があり、注油せずに掘削作
業をすることができ、更にユーザーにおいて容易に研磨
することができるものである。[Operation] With the drilling blade of the present invention, the horsepower consumption and the recoil at the time of drilling are not so large, the cutting surface of the root part is more clean, and it has impact resistance and abrasion resistance, so that drilling work is performed without lubrication. In addition, it can be easily polished by the user.

［実施例］ 第１図はこの発明を施こしてなるトレンチヤを示す概略
側面図で、車輪10を有する走行機体11の一側に掘削チエ
ーン12を架設する掘削ブーム13を装備したものが使用さ
れ、この際、掘削ブーム13は走行機体11の前方側の側部
に揺動可能に枢支されるチエーンケース14の自由端に軸
支され、また、走行機体11の後方側の側部に揺動可能に
枢支される揺動リンク15の自由端部と前記チエーンケー
ス14の自由端部間に連設リンク16が枢着されて、これら
チエーンケース14、揺動リンク15、連設レンク16と前記
走行機体11とで４節回転連鎖が構成されている。したが
つて、前記掘削ブーム13は、使用時においては走行機体
11の側部から下方に向つて垂直状に起立し、不使用時に
は想像線で示すように、ほぼ水平状に側部に格納される
ようになつている。[Embodiment] FIG. 1 is a schematic side view showing a trencher to which the present invention is applied, in which an excavation boom 13 for arranging an excavation chain 12 on one side of a traveling machine body 11 having wheels 10 is used. At this time, the excavation boom 13 is pivotally supported on the free end of the chain case 14 pivotally supported on the front side of the traveling body 11 and swings on the rear side of the traveling body 11. A continuous link 16 is pivotally mounted between the free end of the swing link 15 movably supported and the free end of the chain case 14, and the chain case 14, the swing link 15, and the continuous link 16 are provided. And the traveling body 11 form a four-bar rotation chain. Therefore, the excavation boom 13 is mounted on the traveling body during use.
It rises vertically from the side of 11 downwards, and when not in use, as shown by the phantom line, it is stored in a substantially horizontal shape on the side.

なお、第１図中、17は前記走行機体11上に搭載されるエ
ンジン、18は前記チエーンケース14の揺動を司どるレバ
ー、19はこのレバー18を図示しない伝達機構を介して操
作する操作レバーである。In FIG. 1, 17 is an engine mounted on the traveling machine body 11, 18 is a lever for controlling the swing of the chain case 14, and 19 is an operation for operating the lever 18 via a transmission mechanism (not shown). It is a lever.

次に前記トレンチヤに使用し得るこの発明の掘削刃を説
明する。Next, the drilling blade of the present invention which can be used for the trencher will be described.

第２図は、第16図及び第18図に示す前記掘削アーム13の
先端部に玉軸受21を介して軸支されるスプロケツト22に
架設されると共に左右交互に取付凸部12aを有する前記
掘削チエーン12（第18図及び第19図に示す）にこの発明
の掘削刃23を装着した状態を示す断面図で、図中、24,2
5は左右鋸刃部材を示している。FIG. 2 shows the excavation which is installed on a sprocket 22 pivotally supported by a ball bearing 21 at the tip of the excavation arm 13 shown in FIGS. FIG. 24 is a cross-sectional view showing a state in which the drilling blade 23 of the present invention is attached to the chain 12 (shown in FIGS. 18 and 19),
Reference numeral 5 indicates left and right saw blade members.

前記左右鋸刃部材24,25は互いに対称形をなし、一方の
左鋸刃部材24を説明すると、第５図、第６図及び第７図
にその正面図、側面図及び平面図を、また第８図、第９
図及び第10図にそのＡ矢視図、Ｂ矢視図及びＣ矢視図を
それぞれ示すように、一対の取付孔26が穿設されると共
に、掘削チエーン12の外方に向つて上部が張り出すよう
に中央部が折曲されてなる板状の本体27と、この本体27
の掘削幅方向に鋸状に形成される側面刃部28と、本体27
の掘削深さ方向に向つて断面劣塔状で前記同様に鋸刃状
の先刃部29と、移動方向前端部に形成される前刃部30と
がそれぞれ形成されてなる。そして、左右鋸刃部材24,2
5はそれぞれ掘削チエーン12の取付凸部12aにリベツト31
によつて着脱自在に装着される。The left and right saw blade members 24, 25 are symmetrical to each other, and one left saw blade member 24 will be described. FIG. 5, FIG. 6 and FIG. 7 show its front view, side view and plan view. 8 and 9
As shown in FIG. 10 and FIG. 10 respectively showing the A arrow view, the B arrow view and the C arrow view, a pair of mounting holes 26 are formed, and the upper part of the excavation chain 12 faces outward. A plate-shaped main body 27 whose central part is bent so that it overhangs, and this main body 27
Side edge part 28 formed in a saw shape in the excavation width direction of
A leading edge portion 29 having a tower-like cross-section and having a sawtooth shape in the same manner as described above and a leading edge portion 30 formed at the front end portion in the moving direction are formed in the direction of the excavation depth. Then, the left and right saw blade members 24, 2
5 is a rivet 31 on the mounting projection 12a of the drilling chain 12, respectively.
It is removably attached.

また、第２図において、33,34はそれぞれ左右切削刃部
材を示しており、左右切削刃部材33,34は互いに対称形
をなし、一方の切削刃部材34を説明すると、第11図、第
13図及び第15図にその正面図、平面図及び側面図を、ま
た第12図及び第14図にそのＤ矢視図及びＥ矢視図をそれ
ぞれ示すように、例えば、断面がＬ字形の板状をなし、
この切削刃部材34の移動方向前端部には掘削幅方向にあ
る幅ｂ（第３図示）を有する切削刃部35が形成されてな
る。切削刃部35は第13図示のように、掘削幅方向の面内
において適宜逃げ角、また第14図示のように、掘削深さ
方向に適宜逃げ角をそれぞれ有している。切削刃部材3
3,34は取付孔36を貫通するリベツト37により、図面上そ
の上端部が掘削深さ方向に関し、前記左右鋸刃部材24,2
5の上端部の位置と同位置又はそれより内位置（図面上
で下方位置）に配設されるように、掘削チエーン12の取
付凸部12aに着脱自在に装着される。Further, in FIG. 2, reference numerals 33 and 34 denote left and right cutting blade members, respectively, and the left and right cutting blade members 33 and 34 are symmetrical to each other. One of the cutting blade members 34 will be described with reference to FIG.
13 and 15 are a front view, a plan view and a side view, respectively, and FIGS. 12 and 14 are a D arrow view and an E arrow view thereof, respectively. Form a plate,
A cutting blade portion 35 having a width b (shown in FIG. 3) in the excavation width direction is formed at the front end portion in the moving direction of the cutting blade member 34. The cutting blade portion 35 has an appropriate clearance angle in the plane in the excavation width direction as shown in the thirteenth illustration and an appropriate clearance angle in the excavation depth direction as shown in the fourteenth illustration. Cutting blade member 3
3, 34 is a rivet 37 that penetrates through the mounting hole 36, so that the upper end portion in the drawing is in the direction of the excavation depth, and the left and right saw blade members 24, 2
It is removably mounted on the mounting projection 12a of the excavation chain 12 so as to be disposed at the same position as the upper end of 5 or a position inside thereof (lower position in the drawing).

前記切削刃部材33,34は前記の形状に限られず、要は幅
ｂの切削刃部35又は幅ｃの破砕刃部41がそれぞれ前記の
位置に配設されていれば、いかなる形状とすることも可
能である。更に、第20図から第22図に示すように、前記
掘削チエーン12の取付凸部12aの移動方向前端部上方に
向つて凸部42を有する制限板43をリベツト44等により掘
削チエーン12の取付凸部12aに固着し、切削刃部材33,34
を装着する際に切削刃部35の有効深さをεに制限するこ
とにより、掘削チエーン12が振動等で踊った場合でも、
切削深さを一定にすることも可能である（第22図参
照）。The cutting blade members 33, 34 are not limited to the above-mentioned shape, and any shape may be adopted as long as the cutting blade portion 35 having the width b or the crushing blade portion 41 having the width c is arranged at the position. Is also possible. Further, as shown in FIG. 20 to FIG. 22, a restriction plate 43 having a convex portion 42 is mounted on the excavation chain 12 by means of a rivet 44 or the like, which has a convex portion 42 facing upward in the moving direction of the mounting convex portion 12a of the excavation chain 12. Sticking to the convex portion 12a, the cutting blade members 33, 34
By limiting the effective depth of the cutting blade portion 35 to ε when mounting, even if the excavation chain 12 dances due to vibration, etc.
It is also possible to make the cutting depth constant (see Fig. 22).

前記左右鋸刃部材24,25、左右切削刃部材33,34、は、例
えば第４図に示すように、掘削チエーン12の全長の半分
に装着された刃部材24,25,33,34を考えた場合、左右鋸
刃部材24,25及び左右切削刃部材33,34がそれぞれ交互に
二組づつ装着される構成とすることが可能である。As the left and right saw blade members 24, 25 and the left and right cutting blade members 33, 34, for example, as shown in FIG. 4, consider the blade members 24, 25, 33, 34 attached to half of the entire length of the excavation chain 12. In this case, the left and right saw blade members 24, 25 and the left and right cutting blade members 33, 34 can be installed alternately in two sets.

以上に述べたこの発明のトレンチヤの根切り用掘削刃を
使用して根切りを行なう掘削方法は、第３図(a)に示す
ように、まず前記左右鋸刃部材24,25によつて、幅Ｗの
間隔で根部50がＬ１の深さで対峙する両掘削面51,52が
それぞれ切断される。次に、前記左右切削刃部材33,34
により、両掘削面51,52からそれぞれ幅ｂをもつて切断
される。なお、第３図(b)は前記左右鋸刃部材24,25の位
置が左右切削刃部材33,34の位置とほぼ同位置の場合
で、前記深さ方向のＬ１がなくなり、初期切断部分の深
さがＬ２のみとされた場合で、この際でも左右掘削面5
1,52は左右鋸刃部材24,25により確実に切断される。In the excavation method for performing root cutting using the above-mentioned trencher root cutting blade of the present invention, as shown in FIG. 3 (a), first, by the left and right saw blade members 24, 25, Both the excavated surfaces 51, 52 facing each other at a depth of L1 are cut off at the width W interval. Next, the left and right cutting blade members 33, 34
Thus, the two excavated surfaces 51, 52 are cut with a width b. Incidentally, FIG. 3 (b) shows a case where the positions of the left and right saw blade members 24, 25 are almost the same as the positions of the left and right cutting blade members 33, 34, and there is no L1 in the depth direction. When the depth is L2 only, the left and right excavation surface 5
The left and right saw blade members 24, 25 reliably cut the 1, 52.

なおこれら左右の鋸刃部材24,25及び左右の切削刃部材3
3,34により切削された後の残りの部分は破砕刃38によつ
て適宜破砕される。The left and right saw blade members 24, 25 and the left and right cutting blade members 3
The remaining portion after being cut by 3,34 is appropriately crushed by the crushing blade 38.

［発明の効果］ この発明によるトレンチヤの根切り用掘削刃及びそれに
よる掘削方法は以上に述べたようであるから、以下のよ
うな効果を有するものである。[Advantages of the Invention] Since the excavation blade for root cutting of the trencher and the excavation method using the same according to the present invention are as described above, they have the following effects.

(1)掘削に際し、まず対峙する左右掘削面が左右鋸刃部
材により鋭角的に切断され、その後に左右切削刃部材に
より順次掘削されるため、一度に大きな部分を掘削する
ことがなく、消費馬力をより小にすることができ、また
掘削時の反動もより小とすることができる。(1) When excavating, the left and right excavating surfaces facing each other are sharply cut by the left and right saw blade members, and then sequentially excavated by the left and right cutting blade members, so it is not necessary to excavate a large part at once Can be smaller, and the recoil during excavation can be smaller.

(2)また、前記(1)のようであるため、前記掘削面が左右
鋸刃部分により確実に切断されるため、根部の切断面が
よりきれいになる。(2) Further, since it is as in (1) above, the excavated surface is reliably cut by the left and right saw blade parts, so that the cut surface of the root part becomes cleaner.

(3)前記掘削チエーンが玉軸受を介して掘削アームに軸
支されるスプロケツトに架設されるため、土中の石や砂
等に対して耐摩耗性及び耐衝撃性を有し、より耐久性を
有することができる。(3) Since the excavation chain is erected on a sprocket that is pivotally supported by an excavation arm through a ball bearing, it has abrasion resistance and impact resistance against stones and sand in the soil, and is more durable. Can have.

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

第１図はこの発明の掘削刃及びそれによる掘削方法を施
こしてなるトレンチヤの概略側面図、第２図は同掘削刃
の装着状態を示す断面図、第３図(a),(b)は同掘削刃に
よつて掘削した状態を示すそれぞれ概略断面図、第４図
は同掘削刃を掘削チエーンに装着した状態を示す概略側
面図、第５図から第10図は同掘削刃の鋸刃部材を示すそ
れぞれ概略図、第11図から第15図は同掘削刃の切削刃部
材を示すそれぞれ概略図、第16図及び第17図は同掘削刃
を施こしうるトレンチヤの掘削アームの先端部を示す側
面図及び正面図、第18図及び第19図は同トレンチヤの掘
削チエーンの一部を示す平面図及び側面図、第20図から
第22図は同掘削刃に使用可能な制限板を示すそれぞれ概
略図、第23図から第26図は従来の掘削刃を示すそれぞれ
概略図である。 なお図において、 11……機体 12……掘削チエーン 13……掘削ブーム 27……本体 28……側面刃部 29……先刃部 24,25……左右鋸刃部材 33,34……左右切削刃部材 である。FIG. 1 is a schematic side view of a digging blade of the present invention and a trencher obtained by applying a digging method therefor, FIG. 2 is a cross-sectional view showing a mounting state of the digging blade, and FIGS. 3 (a) and 3 (b). Are schematic cross-sectional views showing a state of excavating with the same digging blade, FIG. 4 is a schematic side view showing a state where the digging blade is mounted on a digging chain, and FIGS. 5 to 10 are saws of the digging blade. 11 is a schematic view showing a blade member, FIGS. 11 to 15 are schematic views showing a cutting blade member of the same excavating blade, and FIGS. 16 and 17 are tip ends of excavating arms of a trencher to which the excavating blade can be applied. 18 and 19 are plan and side views showing a part of the excavation chain of the trencher, and FIGS. 20 to 22 are restriction plates usable for the excavation blade. And FIG. 23 to FIG. 26 are schematic diagrams respectively showing a conventional excavating blade. In the figure, 11 ... Machine 12 ... Excavation chain 13 ... Excavation boom 27 ... Main body 28 ... Side blade 29 ... Tip edge 24, 25 ... Left and right saw blade members 33, 34 ... Left and right cutting It is a blade member.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】走行可能な機体から外方に向つて起伏可能
に突設される掘削ブームに掘削チエーンが架設されてな
るトレンチヤにおいて、掘削刃(23)が、左右の鋸歯部材
(24,25)と、左右の切削刃部材(33,34)、破砕刃(38)とか
らなり、前記左右の鋸歯部材(24,25)は互いに対称形を
なし、それぞれ前記掘削チエーン(12)の外方へ向つて上
部が張り出すように中央部が折曲されてなる板状の本体
(27)と、この本体(27)の掘削幅方向に鋸状に形成される
側面刃部(28)と、前記本体(27)の掘削深さ方向に向つて
断面尖塔状で鋸刃状の先刃部(29)と、移動方向前端部に
形成される前刃部(30)とから形成され、前記掘削チエー
ン(12)の掘削方向において前記鋸歯部材(24,25)より後
位に交互に配設される前記左右の切削刃部材(33,34)は
互いに対称形をなしそれぞれ断面Ｌ字形の板状で切削刃
部(35)が形成されており、かつ前記破砕刃(38)は前記掘
削チエーン(12)の数個所に前記左右の鋸歯部材(24,25)
及び左右の切削刃部材(33,34)より幅狭で中央部に形成
されてなるトレンチヤの根切り用掘削刃。1. In a trencher in which an excavation chain is installed on an excavation boom projecting upward and downward from a machine capable of traveling, the excavation blade (23) has left and right sawtooth members.
(24,25), left and right cutting blade members (33,34), crushing blades (38), the left and right sawtooth members (24,25) are symmetrical to each other, respectively the excavation chain (12 ) A plate-shaped main body with the central part bent so that the upper part protrudes outward
(27), a side edge portion (28) formed in a saw-like shape in the excavation width direction of the main body (27), and a saw-tooth shape with a steeper cross section toward the excavation depth direction of the main body (27). It is formed of a cutting edge portion (29) and a cutting edge portion (30) formed at the front end portion in the moving direction, and alternates behind the saw tooth members (24, 25) in the excavation direction of the excavation chain (12). The left and right cutting blade members (33, 34) arranged in the left and right sides are symmetrical to each other and each has a plate-like cutting portion (35) having an L-shaped cross section, and the crushing blade (38) is The left and right sawtooth members (24, 25) are provided at several points on the drilling chain (12).
And a rooting excavating blade for a trencher which is narrower than the left and right cutting blade members (33, 34) and is formed in the central portion.
JP60037605A 1985-02-28 1985-02-28 Drilling blade for root cutting of trencher Expired - Lifetime JPH0654019B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60037605A JPH0654019B2 (en) 1985-02-28 1985-02-28 Drilling blade for root cutting of trencher

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60037605A JPH0654019B2 (en) 1985-02-28 1985-02-28 Drilling blade for root cutting of trencher

Publications (2)

Publication Number Publication Date
JPS61200228A JPS61200228A (en) 1986-09-04
JPH0654019B2 true JPH0654019B2 (en) 1994-07-20

Family

ID=12502204

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60037605A Expired - Lifetime JPH0654019B2 (en) 1985-02-28 1985-02-28 Drilling blade for root cutting of trencher

Country Status (1)

Country Link
JP (1) JPH0654019B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3153407B2 (en) * 1994-02-15 2001-04-09 強化土エンジニヤリング株式会社 Sealing curtain construction method and device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144066U (en) * 1983-03-16 1984-09-26 株式会社片山製作所 trencher digging blade

Also Published As

Publication number Publication date
JPS61200228A (en) 1986-09-04

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