JPH0684009B2 - Concrete cutting equipment - Google Patents
Concrete cutting equipmentInfo
- Publication number
- JPH0684009B2 JPH0684009B2 JP63048549A JP4854988A JPH0684009B2 JP H0684009 B2 JPH0684009 B2 JP H0684009B2 JP 63048549 A JP63048549 A JP 63048549A JP 4854988 A JP4854988 A JP 4854988A JP H0684009 B2 JPH0684009 B2 JP H0684009B2
- Authority
- JP
- Japan
- Prior art keywords
- tension
- wire saw
- concrete
- wire
- pulley
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
- B28D1/088—Sawing in situ, e.g. stones from rocks, grooves in walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D57/00—Sawing machines or sawing devices not covered by one of the preceding groups B23D45/00 - B23D55/00
- B23D57/003—Sawing machines or sawing devices working with saw wires, characterised only by constructional features of particular parts
- B23D57/0069—Sawing machines or sawing devices working with saw wires, characterised only by constructional features of particular parts of devices for tensioning saw wires
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
【発明の詳細な説明】 《産業上の利用分野》 この発明は、鉄筋コンクリート構築物の切断解体工法に
用いるコンクリートの切断装置の改良に関するものであ
る。TECHNICAL FIELD The present invention relates to an improvement of a concrete cutting device used for a cutting and dismantling method of a reinforced concrete structure.
《従来の技術》 鉄筋コンクリート構築物を切断解体する場合には、従来
からワイヤソーによる次のようなコンクリートの切断装
置が用いられていた。ループ状のワイヤソーを切断しよ
うとするコンクリートとワイヤー駆動機構の駆動プーリ
との間に掛け回す。ワイヤー駆動機構は適当な台車に搭
載されており、台車ごとワイヤー駆動機構を所定方向に
引張って前記ワイヤソーに適当な張力を与える。その状
態で駆動プーリによってワイヤソーを循環させて前記コ
ンクリートを切断する。<< Prior Art >> In the case of cutting and dismantling a reinforced concrete structure, conventionally, the following concrete cutting device using a wire saw has been used. Loop the wire saw between the concrete to be cut and the drive pulley of the wire drive mechanism. The wire drive mechanism is mounted on an appropriate truck, and the wire drive mechanism is pulled together with the truck in a predetermined direction to apply an appropriate tension to the wire saw. In this state, the wire saw is circulated by the drive pulley to cut the concrete.
そして、前記ワイヤソーでコンクリートを効率よく切断
するには、ワイヤソーに作用する切削抵抗を一定に保つ
必要がある。切削中にコンクリートの内部にある鉄筋な
どにワイヤソーが当たると切削抵抗が増し、前記台車を
一定速度で走行させていたのではワイヤソーの張力が増
大する。ワイヤソーを適当な張力以上で使用するとワイ
ヤソー、特に、ワイヤソーに用いられているダイヤモン
ドビーズの摩耗が大きくなり、ダイヤモンドビーズの部
分で切断しやすくなる。In order to efficiently cut concrete with the wire saw, it is necessary to keep the cutting resistance acting on the wire saw constant. When the wire saw hits the reinforcing bars or the like inside the concrete during cutting, the cutting resistance increases, and the tension of the wire saw increases if the carriage is running at a constant speed. When the wire saw is used with an appropriate tension or more, the wire saw, in particular, the diamond beads used in the wire saw is greatly worn, and the diamond beads are easily cut.
このようなダイヤモンドワイヤでは、その消耗量が工事
費の８割程度を占めており、消耗量の増減は実際の工事
では重要な関心事であるが、ダイヤモンドビーズをコン
クリートに押圧する面圧が一定以上になると、消耗量が
急激に増加する一方で、これを所定値以下にすると切断
効率が大幅に低下し、面圧を一定にする張力を常時維持
することが従来の装置では難しかった。With such a diamond wire, the amount of wear accounts for about 80% of the construction cost, and while the increase or decrease in the amount of wear is an important concern in actual construction, the surface pressure that presses the diamond beads against the concrete is constant. In the above cases, while the consumption amount sharply increases, if it is set to a predetermined value or less, the cutting efficiency is significantly reduced, and it is difficult for the conventional device to constantly maintain the tension that keeps the surface pressure constant.
一方、かかる問題点を解消すべく、実願昭61−120166号
のマイクロフィルム（実開昭63−27306号公報）には、
ワイヤソーにかかる引張り荷重に応じて生じる駆動プー
リーの回転軸の歪みを検出するための歪検出手段を備
え、この歪検出手段による検出結果に基づいて張力付与
手段によるワイヤソーの引張り力を適宜調節するように
したしワイヤソー用ケーブル駆動装置が提案され、これ
によれば、効率的かつ安定したワイヤーソーイングとそ
れによる良好なコンクリートの切断面を得ることができ
る。On the other hand, in order to solve such a problem, the microfilm of Japanese Utility Model Application No. 61-120166 (Japanese Utility Model Application No. 63-27306) discloses:
Equipped with a strain detecting means for detecting the strain of the rotating shaft of the drive pulley that occurs according to the tensile load applied to the wire saw, and appropriately adjusting the pulling force of the wire saw by the tension applying means based on the detection result of this strain detecting means. However, a cable drive device for a wire saw has been proposed, which enables efficient and stable wire sawing and a good cut surface of concrete thereby.
《発明が解決しようとする課題》 しかしながら、上記歪検出手段を備えたワイヤソー用ケ
ーブル駆動装置では、歪検出手段は駆動プーリーの回転
軸の歪みを検出するものであるため、ワイヤソーの張力
の増減は、これが掛け回されるケーブル駆動プーリー及
びケーブル駆動プーリの回転軸を介して間接的に検出さ
れるので、ケーブル駆動プーリー又はケーブル駆動プー
リーの回転軸の製作精度やこれらの取付け精度、さらに
はケーブル駆動プーリーの回転トルクの影響を受けるこ
とにより、高張力かつ高速度で回転するワイヤソーの張
力の変動を必ずしも正確に把握しているとはいい難い。<< Problems to be Solved by the Invention >> However, in the wire saw cable drive device including the strain detection means, since the strain detection means detects the strain of the rotating shaft of the drive pulley, the tension of the wire saw increases or decreases. Since this is indirectly detected via the cable drive pulley around which it is wound and the rotary shaft of the cable drive pulley, the manufacturing precision of the cable drive pulley or the rotary shaft of the cable drive pulley, the mounting precision of these, and the cable drive It is hard to say that it is not always possible to accurately grasp the fluctuation of the tension of the wire saw rotating at high tension and high speed due to the influence of the rotating torque of the pulley.
そこで、この発明はかかる課題を鑑みてなされたもの
で、高張力かつ高速度で回転するワイヤソーにかかる張
力の増減を、高精度に管理して、コンクリート等の被切
断体の切断作業をさらに効率良く行なうことのできるコ
ンクリートの切断装置を提供することを目的とする。Therefore, the present invention has been made in view of the above problems, and manages the increase and decrease in the tension applied to the wire saw that rotates at high tension and high speed with high accuracy, and more efficiently cuts the work to be cut such as concrete. It is an object of the present invention to provide a concrete cutting device that can be performed well.
《課題を解決するための手段》 この発明は上記目的を達成するためになされたもので、
切断しようとするコンクリートに掛け回すループ状のワ
イヤソーと、このワイヤソーを駆動プーリに掛け回して
これを循環させるワイヤ駆動機構と、このワイヤ駆動機
構を搭載した台車と、この台車を走行させて前記ワイヤ
ソーに張力を与える台車駆動機構と、前記ワイヤソーの
張力を検出する張力検出手段と、検出された張力に基づ
いて前記台車の走行速度を調整して前記張力を所定値に
保つようにする制御手段とを備えたコンクリートの切断
装置において、前記張力検出手段が、被切断体である前
記コンクリートと前記駆動プーリとの間においてワイヤ
ソーの走行方向と交差する方向にワイヤソーを押圧する
張力測定用プーリと、前記押圧力に抗してワイヤソーが
張力測定用プーリに及ぼす力を計測する反力測定手段と
からなることを特徴とするコンクリートの切断装置を要
旨とするものである。<< Means for Solving the Problem >> The present invention has been made to achieve the above object,
A loop-shaped wire saw that is hung around concrete to be cut, a wire drive mechanism that hangs the wire saw around a drive pulley and circulates the trolley, a trolley equipped with the wire drive mechanism, and the wire saw that runs the trolley. A carriage driving mechanism for applying tension to the wire, a tension detecting means for detecting the tension of the wire saw, and a control means for adjusting the traveling speed of the carriage based on the detected tension to maintain the tension at a predetermined value. In the concrete cutting device, the tension detecting means, a tension measuring pulley for pressing the wire saw in a direction intersecting the traveling direction of the wire saw between the concrete to be cut and the drive pulley, and It is characterized by comprising reaction force measuring means for measuring the force exerted by the wire saw on the tension measuring pulley against the pressing force. It is an gist cutting apparatus of the concrete to.
《作 用》 この発明のコンクリートの切断装置によれば、回転駆動
するワイヤソーの張力は、被切断体であるコンクリート
とワイヤソーの駆動プーリとの間においてワイサソーの
走行方向と交差する方向にワイヤソーを直接押圧する張
力測定用プーリ、及びこの押圧力に抗してワイサソーが
張力測定用プーリに及ぼす力を計測する反力測定手段か
らなる歪検出手段により、当該ワイヤソーから直接検出
される。<< Operation >> According to the concrete cutting device of the present invention, the tension of the wire saw that is rotationally driven directly causes the wire saw to move in a direction that intersects the running direction of the weisa saw between the concrete to be cut and the drive pulley of the wire saw. The strain is detected directly from the wire saw by the tension measuring pulley that is pressed, and the strain detecting means that is a reaction force measuring means that measures the force exerted by the weisa saw on the tension measuring pulley against the pressing force.
《実施例》 第１図〜第４図は本発明の一実施例によるコンクリート
の切断装置を示している。１は台車であって、車輪２
と、チェーン４で車輪２を回転させる走行モータ３とを
有し、モータ３の回転速度を制御することで任意の速度
で台車１を走行させることができる。<< Embodiment >> FIGS. 1 to 4 show a concrete cutting apparatus according to an embodiment of the present invention. 1 is a dolly and wheels 2
And the traveling motor 3 for rotating the wheels 2 by the chain 4, and by controlling the rotation speed of the motor 3, the carriage 1 can be traveled at an arbitrary speed.
５はワイヤソー９を駆動するための駆動プーリであっ
て、台車１の車軸と平行に台車１に搭載されている軸６
に取付けられ、やはり台車１上に搭載されたワイヤ駆動
モータ７によってベルト８を介して回転駆動される。Reference numeral 5 is a drive pulley for driving the wire saw 9, and a shaft 6 mounted on the truck 1 in parallel with the axle of the truck 1.
, And is driven to rotate via a belt 8 by a wire drive motor 7 also mounted on the carriage 1.
ループ状のワイヤソー９は前記駆動プーリ５とコンクリ
ート10との間に第１図のように掛け回される。なお第１
図ではコンクリート10は半分以上すでに切断されてい
る。台車１上には支柱11が立設されており、ここに２つ
のガイドプーリ12a,112bが取付けられているとともにブ
ラケット13a,13bを介して張力測定用プーリ14a,14bが取
付けられている。張力測定用プーリ14aはガイドプーリ1
2aから駆動プーリ５に至る間のワイヤソー９を上から圧
接している。同様に張力測定用プーリ14bは駆動プーリ
５からガイドプーリ12bに至る間のワイヤソー９を下か
ら圧接している。The loop-shaped wire saw 9 is wound around the drive pulley 5 and the concrete 10 as shown in FIG. The first
In the figure, more than half of the concrete 10 has already been cut. A stanchion 11 is erected on the trolley 1, two guide pulleys 12a and 112b are attached thereto, and tension measuring pulleys 14a and 14b are attached via brackets 13a and 13b. The tension measuring pulley 14a is the guide pulley 1
The wire saw 9 is pressed from above from 2a to the drive pulley 5. Similarly, the tension measuring pulley 14b presses the wire saw 9 between the drive pulley 5 and the guide pulley 12b from below.
駆動プーリ５を矢印Ａ方向に回転させ、台車１を矢印Ｂ
方向に走行させると、ワイヤソー９が矢印ＣおよびＤの
ように循環し、コンクリート10の切削状態と台車１の走
行速度とによってほぼ決まる張力がワイヤソー９に働
く。このワイヤソー９の張力によって、張力測定用プー
リ14aを上方へ押し上げる力が働くとともに、張力測定
用プーリ14bを下方に押す力が働く。張力測定用プーリ1
4aを軸支する部分には反力測定手段としての歪ゲージ15
aが取付けられ、同様に張段としての歪ゲージ15aが取付
けられ、同様に張力測定用プーリ14bを軸支する部分に
は反力測定手段としての歪ゲージ15bが取付けられてい
る。Rotate the drive pulley 5 in the direction of arrow A to move the carriage 1 in the direction of arrow B.
When traveling in the direction, the wire saw 9 circulates as shown by arrows C and D, and the tension substantially determined by the cutting state of the concrete 10 and the traveling speed of the carriage 1 acts on the wire saw 9. Due to the tension of the wire saw 9, a force for pushing the tension measuring pulley 14a upward acts and a force for pushing the tension measuring pulley 14b downward. Pulley for tension measurement 1
Strain gauge 15 as a reaction force measuring means is installed on the part that supports 4a.
a is attached, similarly, a strain gauge 15a as a tension step is attached, and similarly, a strain gauge 15b as a reaction force measuring means is attached to a portion pivotally supporting the tension measuring pulley 14b.
第４図に示すように、前記歪ゲージ15aおよび15bは張力
測定回路16に接続されており、ワイヤソー９が張力測定
用プーリ14a,14bに及ぼす力を歪ゲージ15a,15bで検知
し、これからワイヤソー９の張力を検出するようになっ
ている。なお、ワイヤソー９が矢印C,Dのように走行す
るものとすると、駆動プーリ５で引張られる上側を通る
ワイヤソー９の張力が大きく、その張力が歪ゲージ15a
によって検出される。本実施例においては歪ゲージ15a
によって検出される張力を一定にするように台車１の走
行モータ３の回転速度を調整する。As shown in FIG. 4, the strain gauges 15a and 15b are connected to a tension measuring circuit 16, and the strain gauges 15a and 15b detect the force exerted by the wire saw 9 on the tension measuring pulleys 14a and 14b. The tension of 9 is detected. Assuming that the wire saw 9 travels as indicated by arrows C and D, the tension of the wire saw 9 passing through the upper side pulled by the drive pulley 5 is large, and the tension is strain gauge 15a.
Detected by. In this embodiment, the strain gauge 15a
The rotation speed of the traveling motor 3 of the trolley 1 is adjusted so that the tension detected by is constant.
つまり、張力測定回路16の出力は速度制御回路17に入力
されて基準値と比較される。速度制御回路17は、測定さ
れた張力が基準値より大きい場合は台車１の走行速度を
低下させ、反対に測定された張力が基準値より小さい場
合には台車１の速度を増加させる。台車１の走行速度が
増加するとワイヤソー９にはより大きな張力が作用し、
走行速度が低下するとワイヤソー９の張力も小さくな
る。このようにして歪ゲージ15aで検出される張力が適
宜に設定した基準値に保たれるように台車１の走行速度
が調整される。より具体的には、ワイヤソー９の上側の
張力T1、同下側の張力T2、駆動プーリ５のトルクMt、車
輌２の後退速度をHvとすると、張力T1,T2は、ワイヤソ
ー９によって切削される速度と、車輌２の後退速度Hvと
のバランスによって変化し、例えば、切削速度がHvより
も速ければT1,T2は増加し、これとは逆の場合には減少
する。That is, the output of the tension measuring circuit 16 is input to the speed control circuit 17 and compared with the reference value. The speed control circuit 17 reduces the traveling speed of the carriage 1 when the measured tension is larger than the reference value, and increases the speed of the carriage 1 when the measured tension is smaller than the reference value. When the traveling speed of the carriage 1 increases, a larger tension acts on the wire saw 9,
When the traveling speed decreases, the tension of the wire saw 9 also decreases. In this way, the traveling speed of the carriage 1 is adjusted so that the tension detected by the strain gauge 15a is maintained at the appropriately set reference value. More specifically, when the tension T1 on the upper side of the wire saw 9, the tension T2 on the lower side, the torque Mt of the drive pulley 5, and the retreat speed of the vehicle 2 are Hv, the tensions T1 and T2 are cut by the wire saw 9. It changes depending on the balance between the speed and the retreat speed Hv of the vehicle 2. For example, if the cutting speed is higher than Hv, T1 and T2 increase, and in the opposite case, T1 and T2 decrease.
ワイヤソー９の切削速度は、駆動プーリ５のトルクMtに
よって変化する。また、張力T1は、切削時にワイヤソー
９がコンクリート10と接触している長さ（接触長）、T2
の大きさ、切断対象の種類、形状（例えば鉄筋を切断し
ている場合とコンクリートの場合、ワイヤソー９が鋭角
状になる場合と純角状になる場合）で変化し、接触長は
経時的にも変化する。The cutting speed of the wire saw 9 changes depending on the torque Mt of the drive pulley 5. Further, the tension T1 is the length (contact length) of the wire saw 9 in contact with the concrete 10 during cutting, T2
, The type of the object to be cut, and the shape (for example, when the reinforcing bar is cut or concrete, when the wire saw 9 has an acute angle and when it has a pure angle), and the contact length changes with time. Also changes.
そこで、この発明では張力T1が一定になるようにHvを制
御する。Therefore, in the present invention, Hv is controlled so that the tension T1 is constant.
なお、ガイドプーリ12a,12bおよびブラケット13a,13bは
支柱11に対して位置調節自在となっており、またブラケ
ット13a,13bに対して張力測定用プーリ14a,14bが位置調
整自在であり、これらの位置調整によってワイヤソー９
の張力を適切に測定できるような配置関係にすることが
できる。The guide pulleys 12a, 12b and the brackets 13a, 13b are positionally adjustable with respect to the column 11, and the tension measuring pulleys 14a, 14b are positionally adjustable with respect to the brackets 13a, 13b. Wire saw 9 by position adjustment
Can be arranged so that the tension of can be appropriately measured.
《発明の効果》 以上詳細に説明したように、この発明に係るコンクリー
トの切断装置によれば、張力検出手段が、被切断体であ
るコンクリートと駆動プーリとの間においてワイヤソー
の走行方向と交差する方向にワイヤソーを押圧する張力
測定用プーリと、前記押圧力に抗してワイヤソーが張力
測定用プーリに及ぼす力を計測する反力測定手段とから
なるので、高張力かつ高高速で回転するワイヤソーにか
かる張力の増減を、当該ワイヤソーから直接検知するこ
とにより高精度に管理して、コンクリート等の被切断体
の切断作業を従来技術に比べてさらに効率良く行なうこ
とができるとともに、ワイヤソーの消耗をさらに効果的
に防止することができる。<< Effects of the Invention >> As described in detail above, according to the concrete cutting device of the present invention, the tension detecting means intersects the traveling direction of the wire saw between the concrete to be cut and the drive pulley. Since it is composed of a tension measuring pulley that presses the wire saw in the direction, and a reaction force measuring unit that measures the force exerted by the wire saw on the tension measuring pulley against the pressing force, a wire saw that rotates at high tension and high speed can be used. By directly detecting the increase or decrease of the tension from the wire saw, it is possible to manage the work with high accuracy, to perform the cutting work of the object to be cut such as concrete more efficiently as compared with the conventional technique, and to further reduce the consumption of the wire saw. It can be effectively prevented.
第１図は本発明の一実施例による切断装置の正面図、第
２図は同装置の側面図、第３図は同装置の平面図、第４
図は同装置の制御系のブロック図である。 １……台車、３……走行モータ ５……駆動プーリ、７……ワイヤ駆動モータ ９……ワイヤソー、10……コンクリート 12a,12b……ガイドプーリ 14a,14b……張力測定用プーリ 15a,15b……歪ゲージ（反力測定手段） 16……張力測定回路、17……速度制御回路1 is a front view of a cutting device according to an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the same, and FIG.
The figure is a block diagram of a control system of the apparatus. 1 ... Car, 3 ... Traveling motor 5 ... Drive pulley, 7 ... Wire drive motor 9 ... Wire saw, 10 ... Concrete 12a, 12b ... Guide pulley 14a, 14b ... Tension measurement pulley 15a, 15b …… Strain gauge (reaction force measuring means) 16 …… Tension measuring circuit, 17 …… Speed control circuit
Claims (1)
ループ状のワイヤソーと、このワイヤソーを駆動プーリ
に掛け回してこれを循環させるワイヤ駆動機構と、この
ワイヤ駆動機構を搭載した台車と、この台車を走行させ
て前記ワイヤソーに張力を与える台車駆動機構と、前記
ワイヤソーの張力を検出する張力検出手段と、検出され
た張力に基づいて前記台車の走行速度を調整して前記張
力を所定値に保つようにする制御手段とを備えたコンク
リートの切断装置において、前記張力検出手段が、被切
断体である前記コンクリートと前記駆動プーリとの間に
おいてワイヤソーの走行方向と交差する方向にワイヤソ
ーを押圧する張力測定用プーリと、前記押圧力に抗して
ワイヤソーが張力測定用プーリに及ぼす力を計測する反
力測定手段とからなることを特徴とするコンクリートの
切断装置。1. A loop-shaped wire saw to be hung around concrete to be cut, a wire drive mechanism for wrapping the wire saw around a drive pulley to circulate the wire saw, a trolley equipped with the wire drive mechanism, and a trolley for the trolley. A carriage driving mechanism that travels to apply a tension to the wire saw, a tension detection unit that detects the tension of the wire saw, and a traveling speed of the carriage based on the detected tension to maintain the tension at a predetermined value. In the concrete cutting device, the tension detecting means presses the wire saw in a direction intersecting a traveling direction of the wire saw between the concrete to be cut and the drive pulley. And a reaction force measuring means for measuring the force exerted by the wire saw on the tension measuring pulley against the pressing force. Cutting apparatus of the concrete, characterized in Rukoto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048549A JPH0684009B2 (en) | 1988-03-03 | 1988-03-03 | Concrete cutting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63048549A JPH0684009B2 (en) | 1988-03-03 | 1988-03-03 | Concrete cutting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01222903A JPH01222903A (en) | 1989-09-06 |
| JPH0684009B2 true JPH0684009B2 (en) | 1994-10-26 |
Family
ID=12806455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63048549A Expired - Fee Related JPH0684009B2 (en) | 1988-03-03 | 1988-03-03 | Concrete cutting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684009B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03126554U (en) * | 1990-04-04 | 1991-12-19 | ||
| JPH0437308U (en) * | 1990-07-18 | 1992-03-30 | ||
| JPH0476165A (en) * | 1990-07-18 | 1992-03-10 | Sanwa Daiyamondo Kogyo Kk | Removal method of concrete columnar object |
| JP2972354B2 (en) * | 1991-01-25 | 1999-11-08 | 有限会社カサノ工業 | Cutting equipment |
| US5472262A (en) * | 1993-04-28 | 1995-12-05 | Buyens; Marc O. R. G. | Double slot wire sawing apparatus and method |
| PL1951464T3 (en) * | 2005-11-29 | 2009-12-31 | Pellegrini Mecc S P A | Multiple wire machine for cutting stone materials |
| ITLU20090011A1 (en) * | 2009-10-28 | 2011-04-29 | Giorgio Dinelli | DEVICE FOR THE CONTROL OF THE DIAMOND WIRE TENSION AND FOR THE CONTROL OF ITS DEFORMATE TO BE USED IN DIAMOND WIRE MACHINES FOR CUTTING STONE MATERIALS |
| IT201700091951A1 (en) * | 2017-08-08 | 2019-02-08 | Paolo Antonio Di | Machine for cutting blocks of stone material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61175007A (en) * | 1985-01-31 | 1986-08-06 | 有限会社オオイシエンジニアリング | Method and device for controlling cutting in band sawing machine for cutting stone, etc. |
| JPH0529849Y2 (en) * | 1986-08-05 | 1993-07-30 |
-
1988
- 1988-03-03 JP JP63048549A patent/JPH0684009B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01222903A (en) | 1989-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |