JPH11200641A - Crusher with magnet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a crusher suitable for a collecting work of iron scraps by supporting a magnet device in which two flat permanent magnets separately arranged on different magnetic poles toward an attraction surface of a main body frame are incorporated into a mold so that the magnet device may be moved by a guide member and connecting the magnet device with the inside of the frame via a cylinder for elevating and lowering. SOLUTION: In a space 13 within a frame of a crusher 1 biting a material to be crushed between a fixed arm 3 and a movable arm 4, a magnet device 20 is stored and iron scraps generated according to a crushing work are attracted by an attraction surface 15a. The magnet device 20 stores a permanent magnet into a mold and the magnet device 20 is freely movably supported by a guide member 28. Suspension hardware fixed to the mold and suspension hardware 32 fixed to a main body frame 2 are connected via a cylinder 30 for elevating and lowering. The permanent magnet is arranged so that the lower surface side may be different poles N and S from each other and a line of magnetic force extending between both of the magnetic poles is made to extend from the lower surface of the magnet device 20 up to a distant place in an almost circular arc shape. Therefore, iron scraps scattered in the distance can be quickly attracted.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、油圧ショベルなど
の作業台車に取り付けて使用し、鉄筋コンクリート塊な
どを小割りする破砕機であって、小割り作業に伴って生
じる鉄屑の回収作業に適した破砕機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crusher which is used by being attached to a work cart such as a hydraulic shovel and divides reinforced concrete blocks into small pieces, and is suitable for collecting scraps generated by the small crushing work. Crusher.

【０００２】[0002]

【従来の技術】本体フレーム内に永久磁石を収納して鉄
屑を回収できる破砕機として、特許第２５６３８５０
号、特開平８−２８４４３４号、特開平９−１２５４３
９号公報などが開示されている。特許第２５６３８５０
号では、破砕機本体のフレーム内に収納したシリンダ内
のピストンが永久磁石であり、このピストンを吸着面に
向けて移動させて鉄屑を吸着・離脱する。また、特開平
８−２８４４３４号では、破砕機の本体内に永久磁石を
装備して索条で破砕アーム基部と連結し、破砕アームの
開閉に連動して磁石を吸着面に近接させる。2. Description of the Related Art As a crusher capable of recovering iron chips by storing a permanent magnet in a main body frame, Japanese Patent No. 256563850 discloses a crusher.
JP-A-8-284434, JP-A-9-12543
No. 9 is disclosed. Patent No. 2563850
In No. 2, a piston in a cylinder housed in a frame of a crusher main body is a permanent magnet, and the piston is moved toward an adsorption surface to adsorb and release iron chips. In Japanese Patent Application Laid-Open No. 8-284434, a permanent magnet is provided in the main body of the crusher, connected to the base of the crushing arm by a cable, and the magnet is brought close to the suction surface in conjunction with opening and closing of the crushing arm.

【０００３】 一方、特開平９−１２５４３９号では、
円筒形の回転体の片側にＮ極磁石片とＳ極磁石片を並設
した磁性体部を有し、該回転体をケース内に回転自在に
取り付けている。Ｎ極とＳ極の磁極片を並べた磁性体部
の片方が吸着面と向かい合うと磁力線を放散して鉄屑を
吸着し、ついで破砕機の破砕アーム開閉と連動させて磁
性体部を９０゜回転すると、磁力線がケースの吸磁体を
通って相殺され、鉄屑の離脱を行う。[0003] On the other hand, in Japanese Patent Application Laid-Open No. 9-125439,
On one side of a cylindrical rotating body, there is provided a magnetic body portion having an N-pole magnet piece and an S-pole magnet piece juxtaposed, and the rotating body is rotatably mounted in a case. When one of the magnetic parts in which the magnetic pole pieces of the N pole and the S pole face each other is opposed to the attracting surface, the magnetic force is dissipated to adsorb the iron swarf, and then the magnetic body part is rotated by 90 ° by opening and closing the crushing arm of the crusher. When rotated, the magnetic lines of force are canceled through the magnetic absorber of the case, and the iron chips are separated.

【０００４】[0004]

【発明が解決しようとする課題】前記の各破砕機は、構
造上の制約から、大きな吸着面を有し且つ遠方の鉄屑を
効率よく吸着できる磁石を設置することが実際上不可能
である。例えば、特許第２５６３８５０号において、破
砕機用の高圧油が作用する収納シリンダは、強度保持の
ために肉厚を厚く且つ油圧油の接続ポートも強固にする
ことを要するため、破砕機本体のフレーム内の限られた
空間では寸法上の制約が伴い、磁力が遠方まで作用する
吸着面の広い大容量磁石を採用できない。一般に、磁石
は脆い材質であるため、磁石のピストンがシリンダの行
程端でシリンダ壁に衝突する衝撃で破損しないように、
筒状の枠などに収納して保護する工夫も必要となり、該
磁石は特殊形状で汎用性がなくて高価である。仮に大容
量で強力な大型磁石を設置できても、収納シリンダが大
径となって行程容積が増し、該シリンダで大量の作動油
が消費されて破砕機の作動に遅れが生じてしまう。Due to structural limitations, it is practically impossible for each of the above-mentioned crushers to have a magnet having a large attracting surface and capable of efficiently attracting distant iron chips. . For example, in Japanese Patent No. 2,563,850, a storage cylinder in which high-pressure oil for a crusher works needs to be thick in order to maintain strength and a connection port for hydraulic oil needs to be strong. In the limited space inside, large-capacity magnets with a wide attraction surface, where magnetic force acts far away, cannot be adopted due to dimensional restrictions. In general, magnets are made of brittle material, so that the magnet piston should not be damaged by the impact of colliding with the cylinder wall at the stroke end of the cylinder.
It is also necessary to devise a way to protect the magnet by storing it in a cylindrical frame or the like, and the magnet has a special shape, is not versatile, and is expensive. Even if a large-capacity and powerful large magnet can be installed, the storage cylinder becomes large in diameter and the stroke volume increases, and a large amount of hydraulic oil is consumed in the cylinder, causing a delay in the operation of the crusher.

【０００５】 特開平８−２８４４３４号の装置は、吸
着作業の不要時も磁石が上下し、破砕作業時に金属片を
吸着して作業の支障となるのみならず、破砕の衝撃が作
用する過酷な作業条件のために、索条の緩みや摩耗が発
生して磁石と駆動機構の耐久性に問題が生じやすく、狭
い空間内での索条の緩み修正や索条切断時の修理の作業
性も良くない。また、特開平９−１２５４３９号の構成
では、吸着面を拡大するには円筒形の回転体と吸磁体を
大きくする必要があり、それには寸法と構造的な制約を
伴ううえに、用いる磁石片は特殊形状で汎用性が低くな
って製作コストが高い。In the apparatus disclosed in Japanese Patent Application Laid-Open No. 8-284434, the magnet moves up and down even when the suction operation is unnecessary, and the metal piece is attracted during the crushing operation, which not only hinders the operation but also causes a severe shock in which the crushing shock acts. Due to the working conditions, the rope becomes loose or worn, and the durability of the magnet and the drive mechanism is likely to be problematic.The workability of correcting the looseness of the rope in a narrow space and repairing the rope when cutting is also improved. Not good. Further, in the configuration of Japanese Patent Application Laid-Open No. 9-125439, it is necessary to enlarge a cylindrical rotating body and a magnetic absorbing body in order to enlarge the attracting surface, which is accompanied by size and structural restrictions, and requires a magnet piece to be used. Has a special shape, low versatility and high production cost.

【０００６】 一般に、永久磁石で遠方の金属片を吸引
するには、磁力線を遠方まで放散させることが必要であ
り、単一の磁極を吸着面に向けるだけでは磁力線が遠方
に達せず、Ｎ極とＳ極とを狭い距離で配置する場合も同
様である。単に磁力を強くするだけでは、吸着能力を改
善できても遠方の金属片を吸引する能力は低い。この点
に関し、特許第２５６３８５０号や特開平９−１２５４
３９号は、単一の磁極から磁力線を放散するため、強力
な磁力線を遠方まで作用させることは難しい。磁力線を
遠方まで作用させて吸引力を大きくするには、Ｎ極とＳ
極の両磁極を吸着面に向けて適度に離して配置すること
を要する。In general, in order to attract a distant metal piece with a permanent magnet, it is necessary to disperse the magnetic field lines to a distant place. Simply pointing a single magnetic pole toward the attracting surface does not allow the magnetic field lines to reach a distant place, and the N pole The same applies to the case where the and the S pole are arranged at a small distance. Simply increasing the magnetic force can improve the adsorption ability, but the ability to attract distant metal pieces is low. Regarding this point, Japanese Patent No. 2563850 and Japanese Patent Application Laid-Open No.
In No. 39, since the magnetic field lines are radiated from a single magnetic pole, it is difficult to make strong magnetic field lines act far. In order to increase the attractive force by applying the magnetic field lines to a distant place, the N pole and S
It is necessary to arrange both magnetic poles of the poles at an appropriate distance toward the attraction surface.

【０００７】 したがって、本発明が解決しようとする
課題は、破砕機のような破砕の衝撃が作用する過酷な作
業条件下において耐久性があり、しかも破砕機本体のフ
レーム内のような狭い空間内でも収納可能なコンパクト
で低コストの強力な磁石装置を提案することである。本
発明の主たる目的は、安価な汎用品の小型磁石を用いて
も、強力な磁力線が広範囲に遠方まで達する磁石装置を
提供することである。本発明の他の目的は、金属片の吸
着・離脱の際に破砕機の作動遅れが発生せず、且つ不使
用時に破砕作業に伴う衝撃を受けないように磁石などを
隔離可能な磁石装置を提供することである。[0007] Therefore, the problem to be solved by the present invention is that the crusher is durable under harsh working conditions in which the impact of crushing acts, and that the crusher is used in a narrow space such as the frame of the crusher body. The idea is to propose a compact, low-cost and powerful magnet device that can be stored. A main object of the present invention is to provide a magnet device in which strong lines of magnetic force reach a large distance to a distant place even when an inexpensive general-purpose small magnet is used. Another object of the present invention is to provide a magnet device capable of isolating a magnet or the like so that the operation of the crusher does not delay at the time of adsorption and desorption of the metal pieces and the impact due to the crushing operation is not performed when not in use. To provide.

【０００８】[0008]

【課題を解決するための手段】上記目的を達成するため
に、本発明を適用する破砕機は、本体フレームから前方
へ突出する固定アームと、基部を本体フレームに枢着す
る可動アームと、可動アームの駆動シリンダと、本体フ
レームの吸着面から磁力線が外方へ透過するように本体
フレーム内に収納する磁石装置とを有する。本発明で
は、破砕機の本体フレームの両側板内壁に吸着面とほぼ
直交して案内部材を設け、且つ磁石装置は吸着面に向け
て異なる磁極に分離配置する少なくとも２個の平坦な永
久磁石を型枠に組み込んで構成し、該磁石装置を案内部
材で移動可能に支持するとともに、昇降用シリンダを介
してフレーム内部と連結し、昇降用シリンダの伸縮作動
により磁石装置が吸着面に対してほぼ平行を保ちながら
昇降する。In order to achieve the above object, a crusher to which the present invention is applied comprises a fixed arm projecting forward from a main body frame, a movable arm pivotally attaching a base to the main body frame, and a movable arm. It has a drive cylinder for the arm and a magnet device housed in the main body frame so that the lines of magnetic force penetrate outward from the attraction surface of the main body frame. According to the present invention, a guide member is provided on both inner side walls of the main body frame of the crusher substantially perpendicular to the suction surface, and the magnet device includes at least two flat permanent magnets separately arranged at different magnetic poles toward the suction surface. The magnet device is movably supported by a guide member and connected to the inside of the frame via an elevating cylinder. Ascend and descend while keeping parallel.

【０００９】 本発明の破砕機は、本体フレームの底面
に開口を設け、その開口に取り付けた非磁性のプレート
と、本体フレーム内側板の内壁間に前記プレートとほぼ
直交して固着し且つ内向きの縦溝を有する１対の案内部
材とを備える。一方、磁石装置の両脇には、各案内部材
の縦溝に嵌合する上下配列のガイドローラまたは縦長の
摺動部材を配設するとともに、昇降用シリンダを介して
磁石装置の型枠とフレーム内部とを連結する。In the crusher of the present invention, an opening is provided in a bottom surface of a main body frame, and a non-magnetic plate attached to the opening is fixed to an inner wall of an inner plate of the main body frame substantially perpendicularly to the plate and inward. And a pair of guide members having vertical grooves. On the other hand, on both sides of the magnet device, a vertically arranged guide roller or a vertically long sliding member which fits into the vertical groove of each guide member is arranged, and the mold frame and the frame of the magnet device are arranged via a lifting cylinder. Connect with the inside.

【００１０】 また、前記の案内部材に代えて、内向き
の縦凸条を有する１対の案内部材を本体フレームの両側
板内壁に前記プレートとほぼ直交して固着してもよい。
磁石装置の両脇には、各案内部材の縦凸条の側面と接す
る上下配列のガイドローラまたは縦長の摺動部材を配設
するとともに、昇降用シリンダを介して磁石装置の型枠
とフレーム内部とを連結すると好ましい。Instead of the above-mentioned guide member, a pair of guide members having inwardly extending vertical ridges may be fixed to the inner walls of both side plates of the main body frame substantially orthogonal to the plate.
On both sides of the magnet device, guide rollers arranged vertically or in contact with the side surfaces of the vertical ridges of the respective guide members or vertically long sliding members are arranged. And are preferably connected.

【００１１】 好ましくは、磁石装置の昇降用シリンダ
の油圧系統を破砕機の可動アームの駆動シリンダの油圧
系統と連通させる。また、その連通管路の少なくとも一
方に破砕機本体外側から操作可能な開閉弁を設ける。こ
の磁石装置に関して、前記のように各磁極をそれぞれ単
一の磁石とするか、またはそれぞれの磁極が複数の永久
磁石片を同方向に平面的に配列する磁石群で構成する形
態のいずれかとすればよい。Preferably, the hydraulic system of the lifting cylinder of the magnet device communicates with the hydraulic system of the drive cylinder of the movable arm of the crusher. Further, an open / close valve operable from outside the crusher main body is provided on at least one of the communication conduits. Regarding this magnet device, each of the magnetic poles may be a single magnet as described above, or each magnetic pole may be configured by a group of magnets in which a plurality of permanent magnet pieces are arranged in a plane in the same direction. I just need.

【００１２】[0012]

【発明の実施の形態】本発明に係る破砕機１には、図１
と図１１に示すように、本体フレーム２の後方上方にブ
ラケット部を形成し、該ブラケット部に設けた２個の貫
通孔１２にピン５４を挿通することにより、油圧ショベ
ル５０などのアーム５１の先端部とリンク機構５２とに
取り付ける。破砕機１は、アーム５１上のリンク駆動シ
リンダ５３の伸縮作動で前後に回動させて使用し、本体
フレーム２の下方で前方へ突設した固定アーム３と可動
アーム４との間にコンクリートなどの被破砕物を噛み込
み、駆動シリンダ６の伸縮作動で可動アーム４を開閉し
て、油圧ショベル５０の操作によって任意の位置と姿勢
で破砕作業を行う。DESCRIPTION OF THE PREFERRED EMBODIMENTS A crusher 1 according to the present invention has a structure shown in FIG.
As shown in FIG. 11 and FIG. 11, a bracket portion is formed above the rear of the main body frame 2, and a pin 54 is inserted into two through holes 12 provided in the bracket portion, so that an arm 51 such as a hydraulic shovel 50 is provided. Attach to the tip and link mechanism 52. The crusher 1 is used by being rotated back and forth by the expansion and contraction operation of a link drive cylinder 53 on the arm 51, and concrete or the like is provided between the fixed arm 3 and the movable arm 4 projecting forward below the main body frame 2. The movable arm 4 is opened and closed by the expansion and contraction operation of the drive cylinder 6, and the crushing operation is performed at an arbitrary position and posture by operating the hydraulic excavator 50.

【００１３】 破砕機１には、本体フレームの底部に開
口１４を設けるとともに、該開口を非磁性プレート１５
で塞ぐ。開口１４におけるフレーム内空間１３には、プ
レート１５とほぼ直交する案内部材２８で移動自在に支
持される磁石装置２０を収納する。吸着面１５ａは、磁
石装置２０の下面から放散される磁力線が透過するプレ
ート表面であり、吸着面１５ａで鉄筋コンクリートの破
砕作業に伴って生じる鉄屑を吸引・吸着できる。プレー
ト１５は、ステンレス鋼などの非磁性の金属板である。The crusher 1 is provided with an opening 14 at the bottom of the main body frame, and the opening is formed with a non-magnetic plate 15.
Close with. A magnet device 20 movably supported by a guide member 28 substantially orthogonal to the plate 15 is accommodated in the space 13 within the frame in the opening 14. The attraction surface 15a is a plate surface through which the lines of magnetic force radiated from the lower surface of the magnet device 20 penetrate, and the attraction surface 15a can suck and attract iron chips generated by the crushing work of the reinforced concrete. The plate 15 is a non-magnetic metal plate such as stainless steel.

【００１４】 磁石装置２０は、図２から図６に示すよ
うに、中空型枠２３の中に２個の平板状の永久磁石２
１，２２を収納し、両磁石の下面側が互いに異なる磁極
ＮとＳになるように配置する。型枠２３の上面には、支
持部材２５を介して複数のガイドローラ２６を回転自在
に支持し、一方、本体フレームの両側板内壁には、内向
きの縦溝２８ａを形成する案内部材２８をプレート１５
とほぼ直交して取り付け、両縦溝２８ａにガイドローラ
２６を挿入することにより、磁石装置２０を案内部材２
８で移動自在に支持する。磁石装置２０において、例え
ば、型枠２３の上面に吊り金具２４を固着し、該吊り金
具と本体フレームに固着した吊り金具３２（図１）との
間を昇降用シリンダ３０を介して連結する。As shown in FIGS. 2 to 6, the magnet device 20 includes two flat permanent magnets 2 in a hollow mold 23.
The magnets 1 and 22 are housed and arranged such that the lower surfaces of both magnets have different magnetic poles N and S. A plurality of guide rollers 26 are rotatably supported on the upper surface of the mold frame 23 via support members 25, while guide members 28 forming inward vertical grooves 28 a are formed on the inner walls of both side plates of the main body frame. Plate 15
The magnet device 20 is attached to the guide member 2 by inserting the guide roller 26 into both the vertical grooves 28a.
8 to support movably. In the magnet device 20, for example, a hanging metal fitting 24 is fixed to the upper surface of the mold frame 23, and the hanging metal fitting and the hanging metal fitting 32 (FIG. 1) fixed to the main body frame are connected via an elevating cylinder 30.

【００１５】 図示しないけれども、ガイドローラ２６
の代わりに、縦溝２８ａに嵌合する縦長の摺動部材また
は上下配列の摺動部材を用いてもよい。また、縦溝２８
ａを有する案内部材２８の代りに、図８や図９に示すよ
うな縦凸条３６を形成した案内部材３５を取り付けても
よい。案内部材３５では、図８のように縦溝３８を形成
した摺動部材３７を縦凸条３６と嵌合させるか、または
図９のように縦凸条３６の前後側面と接する摺動部材３
９を複数配置すればよい。図９において、摺動部材３９
を公知のガイドローラ（図示しない）に置換してもよ
く、いずれの構成でも磁石装置２０を案内部材２８，３
５に沿って移動させることが可能である。Although not shown, the guide roller 26
Instead, a vertically long sliding member or a vertically arranged sliding member that fits in the vertical groove 28a may be used. Also, the vertical groove 28
Instead of the guide member 28 having a, a guide member 35 formed with a vertical ridge 36 as shown in FIGS. 8 and 9 may be attached. In the guide member 35, a sliding member 37 having a vertical groove 38 formed therein as shown in FIG. 8 is fitted to the vertical ridge 36, or as shown in FIG.
9 may be arranged. Referring to FIG.
May be replaced with a known guide roller (not shown), and in any configuration, the magnet device 20 may be connected to the guide members 28 and 3.
5 can be moved.

【００１６】 磁石装置２０における磁石２１，２２
は、吸着面が十分に広く且つ吸着面に向けて異なる磁極
に２分させる。このため、図５に示すように、両磁極間
を亘る磁力線３４は、磁石装置２０の下面からほぼ円弧
状に遠方まで強力な磁力線が及び、遠方の鉄屑を吸引・
吸着して回収可能である。The magnets 21 and 22 in the magnet device 20
Divides the attracting surface into two sufficiently different magnetic poles toward the attracting surface. For this reason, as shown in FIG. 5, the magnetic line of force 34 extending between the magnetic poles extends from the lower surface of the magnet device 20 in a substantially arc shape to a distant place, and attracts and removes distant iron chips.
It can be recovered by adsorption.

【００１７】 磁石装置２０に収納する永久磁石は、図
７に示すように、安価な小型の磁石片を多数組み合わせ
た磁石群で構成してもよい。この磁石群では、図７のよ
うに一方がＮ極の群で他方がＳ極の群になるように型枠
２３内に配列しても、または図７の２１ａと２２ａを同
じ磁極とし、２１ｂと２２ｂを別の磁極になるように配
列してもよく、いずれの場合でも強力な磁力線が広範囲
且つ遠方まで及んで吸引能力が大きい。この永久磁石の
平面形状は、図示のような正方形に限らず、長方形、多
角形または円形などでもよい。As shown in FIG. 7, the permanent magnet housed in the magnet device 20 may be constituted by a magnet group in which many inexpensive small magnet pieces are combined. In this magnet group, as shown in FIG. 7, one group may be arranged in the mold 23 such that one group is an N pole group and the other is a S pole group, or 21a and 22a in FIG. And 22b may be arranged to be different magnetic poles. In any case, strong magnetic lines of force extend over a wide range and far away, and the attraction ability is large. The planar shape of the permanent magnet is not limited to a square as shown, but may be a rectangle, a polygon, a circle, or the like.

【００１８】 図１０に例示するように、昇降用シリン
ダ３０は比較的細径であり、該シリンダの上下各油室
は、破砕機のアーム駆動シリンダ６のヘッド側とロッド
側油室に管路４７，４８で連通させ、両シリンダを連動
して伸縮作動すると好ましい。この油圧回路により、破
砕アームの操作弁４２の作動だけで破砕アーム４の開閉
とともに磁石装置２０の昇降即ち吸着・離脱の制御が行
え、専用の油圧配管が不要になるうえに、索条などを用
いずに油圧シリンダで磁石装置を駆動するため、索条の
緩みや切断といった不具合も発生しない。As illustrated in FIG. 10, the lifting cylinder 30 has a relatively small diameter, and the upper and lower oil chambers of the cylinder are connected to the head side and the rod side oil chamber of the arm driving cylinder 6 of the crusher. It is preferable that the two cylinders communicate with each other at 47 and 48, and both cylinders operate in conjunction with each other. With this hydraulic circuit, the opening and closing of the crushing arm 4 and the control of the lifting and lowering of the magnet device 20, that is, the adsorption and desorption, can be performed only by the operation of the operation valve 42 of the crushing arm. Since the magnet device is driven by the hydraulic cylinder without using the same, troubles such as loosening and cutting of the cable do not occur.

【００１９】 昇降用シリンダ３０の油圧系統には、可
動アーム４の駆動シリンダ６の油圧系統と連通する管路
の少なくとも一方に、破砕機の外部から操作可能な開閉
弁４９（図１０）を設けると好ましい。開閉弁４９は、
鉄屑の吸着回収作業を行わない際には、必要に応じて磁
石装置２０を上昇させた位置で閉じることにより、磁力
線が吸着面１５ａの外部に及ばない位置で磁石装置２０
を停止でき、不要な昇降作動を止めて磁石２０，２１を
保護することができる。In the hydraulic system of the lifting cylinder 30, an open / close valve 49 (FIG. 10) operable from outside the crusher is provided on at least one of the pipelines communicating with the hydraulic system of the drive cylinder 6 of the movable arm 4. Is preferred. On-off valve 49
When the iron scrap adsorption and collection work is not performed, the magnet device 20 is closed at the raised position as necessary, so that the magnetic device lines are not positioned outside the adsorption surface 15a.
Can be stopped, and unnecessary lifting operation can be stopped to protect the magnets 20 and 21.

【００２０】[0020]

【実施例】次に、本発明を実施例に基づいて説明する
が、本発明は実施例に限定されるものではなく、実施の
態様によって様々な形態を包含する。図１に示す破砕機
１は、左右側板と両側板を連結する背板などで構成する
本体フレーム２と、該フレームの下方から前方へ突出す
る固定アーム３と、アーム基部の近傍にピン５で回転可
能に基部を枢着した可動アーム４と、本体フレーム２と
可動アーム４の前方部とにピン７，８で軸着する油圧シ
リンダ６とを備える。ブラケット部を本体フレーム２の
後方上方に形成し、該ブラケット部にピン孔１２，１２
を設ける。EXAMPLES Next, the present invention will be described based on examples, but the present invention is not limited to the examples, but includes various forms depending on the embodiments. The crusher 1 shown in FIG. 1 includes a main body frame 2 including a back plate connecting left and right side plates and both side plates, a fixed arm 3 protruding forward from below the frame, and a pin 5 near an arm base. The movable arm 4 has a base rotatably pivotally mounted thereon, and a hydraulic cylinder 6 which is pivotally mounted on the main body frame 2 and a front portion of the movable arm 4 with pins 7 and 8. A bracket portion is formed above the rear of the main body frame 2, and pin holes 12, 12 are formed in the bracket portion.
Is provided.

【００２１】 破砕機１は、図１１に示すように、油圧
ショベル５０のアーム５１の先端部および該アーム上に
取り付けたリンク機構５２に対し、各ピン孔１２にピン
５４を装着して取り付ける。油圧ショベル５０におい
て、アーム５１および油圧シリンダ５３を操作して、破
砕機１を任意の位置と姿勢に制御できる。破砕機１は、
駆動シリンダ６の伸縮作動で可動アーム４を開閉し、ア
ーム３，４の対向面に設置した破砕歯１１でコンクリー
ト塊を噛んで破砕できる。As shown in FIG. 11, the crusher 1 mounts a pin 54 in each pin hole 12 to a tip end of an arm 51 of a hydraulic shovel 50 and a link mechanism 52 mounted on the arm. In the excavator 50, the crusher 1 can be controlled to an arbitrary position and posture by operating the arm 51 and the hydraulic cylinder 53. The crusher 1
The movable arm 4 is opened and closed by the expansion and contraction operation of the drive cylinder 6, and the concrete mass can be bitten and crushed by the crushing teeth 11 provided on the opposing surfaces of the arms 3 and 4.

【００２２】 破砕機１には、固定アーム３の後方にお
いて、本体フレーム２の底部から上方に向かって、矩形
平面の開口１４をほぼ横幅全体に亘って設ける。開口１
４内には磁石装置２０を収納し、表側を非磁性のプレー
ト１５で塞ぎ、該プレートをボルト１６（図１）で固定
する。一方、プレート１５の裏側であるフレーム内空間
１３において、磁石装置２０をプレート１５に対して近
接可能に支持する。磁石装置２０により、プレート１５
の表面が磁力線の透過する吸着面１５ａとなり、磁石装
置２０が下降してプレート１５に近接すると吸着面１５
ａで鉄屑を吸引・吸着でき、該磁石装置が上昇して磁力
線の影響が弱くなると、所望の位置で鉄屑を落下させる
ことができる。In the crusher 1, an opening 14 having a rectangular plane is provided substantially over the entire width from the bottom of the main body frame 2 to the upper side behind the fixed arm 3. Opening 1
The magnet device 20 is housed in the inside 4, the front side is closed with a non-magnetic plate 15, and the plate is fixed with bolts 16 (FIG. 1). On the other hand, the magnet device 20 is supported in the frame space 13 on the back side of the plate 15 so as to be close to the plate 15. The plate 15 is moved by the magnet device 20.
Becomes a suction surface 15a through which the lines of magnetic force penetrate, and when the magnet device 20 descends and approaches the plate 15, the suction surface 15a
The iron chips can be sucked and adsorbed by a, and when the magnet device is lifted and the influence of the lines of magnetic force is weakened, the iron chips can be dropped at a desired position.

【００２３】 図２と図３は、本体フレーム２の空間１
３の部分を拡大して示す。図２と図３において、本体フ
レーム２の対向内壁つまり両内側板には、プレート１５
とほぼ直交させて案内部材２８，２８を固着し、両案内
部材に内向きの断面Ｕ字形の縦溝２８ａを形成する。一
方、磁石装置２０の型枠２３の上面には、その両脇に支
持部材２５，２５を垂直に固着し、各支持部材２５にピ
ン２７でガイドローラ２６を外側に向けて回動自在に配
置する。各ガイドローラ２６は縦溝２８ａに挿入する。
磁石装置２０において、型枠２３の上面中央に１対の吊
り金具２４を固着し、該吊り金具と本体フレームに固着
した吊り金具３２（図１）との間を昇降用シリンダ３０
を介してピン２９，３３で連結する。FIGS. 2 and 3 show the space 1 of the main body frame 2.
3 is shown enlarged. 2 and 3, the opposing inner walls of the main body frame 2, that is, both inner plates,
The guide members 28, 28 are fixed substantially perpendicularly to the vertical direction, and an inward vertical groove 28a having a U-shaped cross section is formed in each of the guide members. On the other hand, support members 25, 25 are vertically fixed on both sides of the upper surface of the mold frame 23 of the magnet device 20, and the guide rollers 26 are rotatably disposed on the respective support members 25 with the pins 27 toward the outside. I do. Each guide roller 26 is inserted into the vertical groove 28a.
In the magnet device 20, a pair of suspension fittings 24 is fixed to the center of the upper surface of the mold frame 23, and a lifting cylinder 30 (FIG. 1) fixed to the suspension frame and the suspension fitting 32 (FIG. 1) fixed to the body frame.
And are connected by pins 29 and 33.

【００２４】 磁石装置２０は、図６に示すように、矩
形平面の平坦な型枠２３の内部に吸着面の広い平坦な２
個の永久磁石２１，２２を収納し、各磁石の下端面が異
なる磁極のＳ極とＮ極になるように固定する。この結
果、図５に示すように、一方のＮ極から他方のＳ極に向
かう磁力線３４は、破砕機１の本体フレーム２のほぼ横
幅全体に亘って広範囲に放散され、大きな円弧状軌跡を
描いて強力な磁力が遠方まで達する。As shown in FIG. 6, the magnet device 20 includes a flat mold 2 having a wide attraction surface inside a flat mold 23 having a rectangular flat surface.
The permanent magnets 21 and 22 are housed and fixed such that the lower end faces of the magnets are S and N poles of different magnetic poles. As a result, as shown in FIG. 5, the magnetic lines of force 34 from one north pole to the other south pole are widely scattered over substantially the entire lateral width of the main body frame 2 of the crusher 1 to draw a large arc-shaped locus. Strong magnetic force reaches far away.

【００２５】 図１０に示すように、昇降用シリンダ３
０の上下各油室に通じる油圧系統は、破砕機のアーム駆
動シリンダ６のヘッド側とロッド側油室に通じる油圧系
統１０ａ，１０ｂに管路４７，４８で連通させ、両シリ
ンダを連動して伸縮作動させる。破砕機１の作動油は、
油圧ショベル５０の駆動用ポンプ４０から管路４１と運
転室内設置の操作弁４２を通過し、油圧ショベルのアー
ム５１に沿う配管系統４５，４６を経て流入する。さら
に図１において、破砕機１の両側に設置した油圧コネク
ション９を中継して破砕機１の内部配管１０を通り、可
動アーム４の駆動シリンダ６へ供給する。昇降用シリン
ダ３０は、配管１０において、駆動シリンダ６の各管路
１０ａ，１０ｂと管路４７，４８で連通している。ま
た、破砕機からの戻り油は、操作弁４２から管路４３を
経てタンク４４に戻す。As shown in FIG. 10, the lifting cylinder 3
The hydraulic system communicating with each of the upper and lower oil chambers is connected to the hydraulic system 10a, 10b communicating with the head side of the arm drive cylinder 6 of the crusher and the rod-side oil chamber via pipe lines 47, 48, and the two cylinders are linked. Operate the telescopic operation. The hydraulic oil of the crusher 1
The fluid flows from the drive pump 40 of the excavator 50 through the pipeline 41 and the operation valve 42 provided in the operator's cab, and flows through piping systems 45 and 46 along the arm 51 of the excavator. Further, in FIG. 1, the oil is supplied to the drive cylinder 6 of the movable arm 4 through the internal piping 10 of the crusher 1 via the hydraulic connections 9 installed on both sides of the crusher 1. The lifting cylinder 30 communicates with the pipes 10 a and 10 b of the drive cylinder 6 via pipes 47 and 48 in the pipe 10. The return oil from the crusher returns to the tank 44 from the operation valve 42 via the pipe 43.

【００２６】 操作弁４２を作動すると、可動アーム４
の開閉動作に伴って、昇降用シリンダ３０が伸縮作動す
る。この伸縮作動により、磁石装置２０は、案内部材２
８に沿って本体フレーム２の底部吸着面１５ａに対して
ほぼ平行状態を保ちながら移動し、プレート１５に接近
・離隔できる。When the operation valve 42 is operated, the movable arm 4
As the opening / closing operation is performed, the elevating cylinder 30 expands and contracts. Due to the expansion and contraction operation, the magnet device 20 can move the guide member 2
8 while maintaining a substantially parallel state with respect to the bottom suction surface 15 a of the main body frame 2, and can move toward and away from the plate 15.

【００２７】 図７は、型枠２３に収納支持する永久磁
石の別の配列構成を示し、磁石装置について、各磁極ご
とに複数の小さな永久磁石片２１，２２を方向をそろえ
て配列する。この際に、磁極を構成する磁石片は小型の
磁石でよく、万一磁石片が破損しても破損磁石片だけの
交換で済み、且つ磁石片が小さいので取り付けと取り外
し作業が容易である。各磁石片の配列は、図示のように
２１ａ，２１ｂをＮ極および２２ａ，２２ｂをＳ極とす
る代わりに、２１ａと２２ａを同じ磁極とし、２１ｂと
２２ｂを別の磁極になるように配列してもよい。FIG. 7 shows another arrangement of permanent magnets housed and supported in the mold 23. In the magnet device, a plurality of small permanent magnet pieces 21 and 22 are arranged in the same direction for each magnetic pole. At this time, the magnet piece constituting the magnetic pole may be a small magnet, and even if the magnet piece is damaged, only the damaged magnet piece needs to be replaced. In addition, since the magnet piece is small, mounting and removing operations are easy. The arrangement of the magnet pieces is such that 21a and 22b have the same magnetic pole, and 21b and 22b have another magnetic pole, instead of the north pole 21a, 21b and the south pole 22a, 22b as shown. You may.

【００２８】 図８と図９は それぞれ磁石装置の案内
手段の変形例を示す。図８では、本体フレーム２の両内
側板にプレート１５とほぼ直交させて案内部材３５，３
５を固着し、各案内部材に内向きの縦凸条３６を形成す
る。摺動部材３７は、磁石装置２０の型枠両脇にそれぞ
れ垂直に立設し、各摺動部材に縦溝３８を外向きに形成
する。摺動部材３７の縦溝３８は、案内部材３５の縦凸
条３６に嵌合させる。一方、図９では、図８と同様に１
対の案内部材３５をフレーム両内側板に固着するととも
に、磁石装置２０の型枠両脇に縦凸条３６の前後側面に
接する各２枚の摺動部材３９を対向させ、該摺動部材を
取り付けた支持部材２５を垂直に立設する。摺動部材３
９が縦凸条３６を挟んで支持することにより、磁石装置
２０を昇降可能に支持する。FIGS. 8 and 9 each show a modification of the guide means of the magnet device. In FIG. 8, guide members 35, 3 are provided on both inner plates of the main body frame 2 so as to be substantially orthogonal to the plate 15.
5 is fixed, and an inwardly extending vertical ridge 36 is formed on each guide member. The sliding members 37 are erected vertically on both sides of the mold frame of the magnet device 20, and vertical grooves 38 are formed in each sliding member outward. The vertical groove 38 of the sliding member 37 is fitted to the vertical ridge 36 of the guide member 35. On the other hand, in FIG.
A pair of guide members 35 are fixed to both inner side plates of the frame, and two sliding members 39 in contact with the front and rear side surfaces of the vertical ridges 36 are opposed to both sides of the form of the magnet device 20, and the sliding members are fixed. The mounted support member 25 is erected vertically. Sliding member 3
9 supports the magnet device 20 so as to be able to move up and down by supporting the vertical convex strip 36 therebetween.

【００２９】 また、図１０には、昇降用シリンダ３０
に通じる管路の少なくとも一方に開閉弁４９を取り付
け、該開閉弁を経て駆動シリンダ６のポート管路１０ａ
または１０ｂに連通する。開閉弁４９は、図示しないが
破砕機１の外部から操作可能に取り付けられ、管路４７
と４８の両方またはいずれか一方に設置する。開閉弁４
９の設置により、鉄屑の吸着回収作業を行わないとき
は、磁石装置２０を強力な磁力が吸着面１５ａに及ばな
い位置まで上昇させ、この位置で開閉弁４９を閉じて磁
石装置２０を静止できる。この結果、磁石装置２０の不
要な昇降作動を止めることができ、破砕作業に伴う衝撃
から磁石自体および昇降用シリンダと案内機構を保護で
きる。FIG. 10 shows the lifting cylinder 30.
An on-off valve 49 is attached to at least one of the pipelines leading to the port, and the port pipeline 10a of the drive cylinder 6 is passed through the on-off valve.
Or communicate with 10b. Although not shown, the on-off valve 49 is mounted so as to be operable from outside the crusher 1,
And 48 or both. On-off valve 4
When the work of attracting and collecting iron chips is not performed by the installation of the magnet 9, the magnet device 20 is raised to a position where a strong magnetic force does not reach the suction surface 15a, and at this position the on-off valve 49 is closed to stop the magnet device 20. it can. As a result, unnecessary lifting operation of the magnet device 20 can be stopped, and the magnet itself, the lifting cylinder, and the guide mechanism can be protected from the impact caused by the crushing operation.

【００３０】[0030]

【発明の効果】本発明に係る破砕機では、内蔵の磁石装
置が本体フレーム内空間のほぼ横幅全体に亘って吸着面
積が広く、さらに該磁石装置に用いる磁石の形状が単純
であるので低コストで容易に製作できる。磁石装置にお
いて、Ｎ極とＳ極の１対の磁極を２分割に配列すること
により、両磁極間を亘る強力な磁力線が幅広く且つ遠方
まで達し、鉄屑が遠方に広範囲に散在していても破砕機
を接地せずに吸引・吸着することができ、極めて作業効
率が良く吸着作業を迅速に達成できる。In the crushing machine according to the present invention, the built-in magnet device has a large suction area over substantially the entire width of the space in the main body frame, and the magnet used in the magnet device has a simple shape, so that the cost is low. Can be easily manufactured. In the magnet device, by arranging a pair of magnetic poles of the N pole and the S pole in two parts, strong magnetic lines of force extending between the magnetic poles are wide and far, and even if iron scraps are scattered far and wide. Suction and suction can be performed without grounding the crusher, so that the work efficiency is extremely high and the suction work can be quickly achieved.

【００３１】 また、磁石装置において、小型の永久磁
石片を方向をそろえて磁極ごとに配列すると、安価で小
型の汎用磁石片が利用可能となる。この磁石装置では、
磁石片の破損時は破損磁石片のみを交換して修理できる
のみならず、個々の磁石片は磁力が小さいので取り付け
と取り外しが容易に行え、全体の製作コストも修理費も
低減化できる。In the magnet device, if small permanent magnet pieces are arranged for each magnetic pole in the same direction, an inexpensive and small general-purpose magnet piece can be used. In this magnet device,
When the magnet pieces are broken, not only can the damaged magnet pieces be replaced but also repaired, and since the individual magnet pieces have a small magnetic force, they can be easily attached and detached, and the overall manufacturing cost and repair cost can be reduced.

【００３２】 本発明で用いる昇降用シリンダは、比較
的細径で行程容積が小さいことにより、可動アームの駆
動シリンダと油圧系統が共通しても可動アームの作動遅
れが殆ど発生せず、破砕と鉄屑回収の作業を並行させて
も両作業を快適に行える。また、鉄屑の回収作業を行わ
ない場合には、磁石装置の上昇位置で連通回路の開閉弁
を閉じれば、磁力が外部に及ばない状態で永久磁石の保
持が可能であり、該磁石を衝撃から保護することができ
る。Since the lifting cylinder used in the present invention has a relatively small diameter and a small stroke volume, even if the driving cylinder of the movable arm and the hydraulic system are common, there is almost no delay in the operation of the movable arm. Both tasks can be performed comfortably even if iron scrap collection work is performed in parallel. In addition, when the collection work of iron scrap is not performed, if the on-off valve of the communication circuit is closed at the raised position of the magnet device, the permanent magnet can be held without the magnetic force reaching the outside. Can be protected from

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

【図１】 本発明に係る破砕機を示す側面図であり、本
体フレーム側板を一部切り開いて示している。FIG. 1 is a side view showing a crusher according to the present invention, in which a side plate of a main body frame is partially cut open.

【図２】 図１のＸ−Ｘに沿って切断した要部の拡大断
面図である。FIG. 2 is an enlarged cross-sectional view of a main part taken along line XX of FIG.

【図３】 図２に示す要部の正面を示す横断面図であ
る。FIG. 3 is a transverse sectional view showing the front of the main part shown in FIG. 2;

【図４】 磁石装置と昇降用シリンダの一部を示す側面
図である。FIG. 4 is a side view showing a part of a magnet device and a lifting cylinder.

【図５】 磁力線の放散状態を示す磁石装置の側面図で
ある。FIG. 5 is a side view of the magnet device showing a state of dispersal of the lines of magnetic force.

【図６】 磁石装置の底面を示す平面図である。FIG. 6 is a plan view showing a bottom surface of the magnet device.

【図７】 磁石装置の変形例の底面を示す平面図であ
る。FIG. 7 is a plan view showing a bottom surface of a modification of the magnet device.

【図８】 磁石装置の案内機構の変形例を示す図２と同
様の拡大断面図である。FIG. 8 is an enlarged sectional view similar to FIG. 2, showing a modification of the guide mechanism of the magnet device.

【図９】 案内機構の別の変形例を示す図２と同様の拡
大断面図である。FIG. 9 is an enlarged sectional view similar to FIG. 2, showing another modification of the guide mechanism.

【図１０】 可動アームの駆動シリンダと昇降用シリン
ダに用いる油圧回路図である。FIG. 10 is a hydraulic circuit diagram used for a driving cylinder and a lifting / lowering cylinder of a movable arm.

【図１１】 破砕機を油圧ショベルに取り付けた状態を
示す側面図である。FIG. 11 is a side view showing a state where the crusher is attached to a hydraulic shovel.

【符号の説明】[Explanation of symbols]

１ 破砕機 ２ 本体フレーム ３ 固定アーム ４ 可動アーム ６ 駆動シリンダ １４ 開口 １５ プレート ２０ 磁石装置 ２１，２２ 磁石 ２３ 型枠 ２６ ガイドローラ ２８ 案内部材 ２８ａ 縦溝 ３０ 昇降用シリンダ ３６ 縦凸条 ４７，４８ 連通管路 ４９ 開閉弁 DESCRIPTION OF SYMBOLS 1 Crusher 2 Main body frame 3 Fixed arm 4 Movable arm 6 Drive cylinder 14 Opening 15 Plate 20 Magnet device 21,22 Magnet 23 Formwork 26 Guide roller 28 Guide member 28a Vertical groove 30 Cylinder for raising and lowering 36 Vertical ridge 47,48 Communication Line 49 On-off valve

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 油圧ショベルなどの作業台車に取り付け
て使用し、本体フレームから前方へ突出する固定アーム
と、基部を本体フレームに枢着する可動アームと、可動
アームの駆動シリンダと、本体フレーム内に収納する磁
石装置とを有する破砕機において、本体フレームの両側
板内壁に底部吸着面とほぼ直交して案内部材を設け、且
つ磁石装置は吸着面に向けて異なる磁極に分離配置する
少なくとも２個の平坦な永久磁石を型枠に組み込んで構
成し、該磁石装置を案内部材で移動可能に支持するとと
もに、昇降用シリンダを介してフレーム内部と連結し、
昇降用シリンダの伸縮作動により磁石装置が吸着面に対
してほぼ平行を保ちながら昇降する磁石付き破砕機。1. A fixed arm which is used by being attached to a work cart such as a hydraulic shovel and protrudes forward from a main body frame, a movable arm which pivotally connects a base to the main body frame, a drive cylinder of the movable arm, and And a magnet device housed in the crusher, wherein guide members are provided on the inner walls of both side plates of the main body frame substantially orthogonal to the bottom suction surface, and the magnet device is separated and arranged at different magnetic poles toward the suction surface. A flat permanent magnet is configured by being incorporated in a mold, and the magnet device is movably supported by a guide member, and is connected to the inside of the frame via a lifting cylinder,
A crusher with a magnet that moves up and down while keeping the magnet device almost parallel to the adsorption surface by the expansion and contraction operation of the lifting cylinder. 【請求項２】 油圧ショベルなどの作業台車に取り付け
て使用し、本体フレームから前方へ突出する固定アーム
と、基部を本体フレームに枢着した可動アームと、可動
アームの駆動シリンダと、本体フレーム内に収納する磁
石装置とを有する破砕機において、本体フレームの底面
に開口を設け、その開口に取り付けた非磁性のプレート
と、本体フレームの両側板内壁に前記プレートとほぼ直
交して固着し且つ内向きの縦溝を有する１対の案内部材
とを備え、一方、磁石装置は吸着面に向けて異なる磁極
に分離配置する少なくとも２個の平坦な永久磁石を型枠
に組み込んで構成し、且つ磁石装置の両脇には、各案内
部材の縦溝に嵌合する上下配列のガイドローラまたは縦
長の摺動部材を配設するとともに、昇降用シリンダを介
して磁石装置の型枠とフレーム内部とを連結し、昇降用
シリンダの伸縮作動により磁石装置が案内部材に沿って
昇降する磁石付き破砕機。2. A fixed arm which is used by being attached to a work vehicle such as a hydraulic shovel and protrudes forward from a body frame, a movable arm having a base pivotally connected to the body frame, a drive cylinder of the movable arm, and A crusher having a magnet device housed in the main body frame, an opening is provided in the bottom surface of the main body frame, and a non-magnetic plate attached to the opening is fixed to the inner wall of both side plates of the main body frame substantially perpendicularly to the plate, and A pair of guide members having longitudinal grooves oriented in a direction, while the magnet device is configured by incorporating at least two flat permanent magnets separately arranged at different magnetic poles toward the attraction surface in a mold; On both sides of the apparatus, guide rollers or vertically long sliding members arranged in an up / down arrangement to be fitted in the vertical grooves of each guide member are provided, and a mold for the magnet apparatus is formed via a lifting cylinder. A crushing machine with a magnet, which connects the inside of the frame with the inside of the frame, and the magnet device moves up and down along the guide member by the expansion and contraction operation of the lifting cylinder. 【請求項３】 油圧ショベルなどの作業台車に取り付け
て使用し、本体フレームから前方へ突出する固定アーム
と、基部を本体フレームに枢着した可動アームと、可動
アームの駆動シリンダと、本体フレーム内に収納する磁
石装置とを有する破砕機において、本体フレームの底面
に開口を設け、その開口に取り付けた非磁性のプレート
と、本体フレームの両側板内壁に前記プレートとほぼ直
交して固着し且つ内向きの縦凸条を有する１対の案内部
材とを備え、一方、磁石装置は吸着面に向けて異なる磁
極に分離配置する少なくとも２個の平坦な永久磁石を型
枠に組み込んで構成し、且つ磁石装置の両脇には、各案
内部材の縦凸条の側面と接する上下配列のガイドローラ
または縦長の摺動部材を配設するとともに、昇降用シリ
ンダを介して磁石装置の型枠とフレーム内部とを連結
し、昇降用シリンダの伸縮作動によって磁石装置が案内
部材に沿って昇降する磁石付き破砕機。3. A fixed arm which is used by being attached to a work carriage such as a hydraulic shovel and protrudes forward from a main body frame, a movable arm having a base pivotally connected to the main body frame, a drive cylinder of the movable arm, and A crusher having a magnet device housed in the main body frame, an opening is provided in the bottom surface of the main body frame, and a non-magnetic plate attached to the opening is fixed to the inner wall of both side plates of the main body frame substantially perpendicularly to the plate, and A pair of guide members having longitudinally oriented ridges, while the magnet device is configured by incorporating at least two flat permanent magnets separately arranged at different magnetic poles toward the attraction surface into the mold, and On both sides of the magnet device, vertically arranged guide rollers or vertically long sliding members that are in contact with the side surfaces of the vertical ridges of the respective guide members are arranged, and the magnet device is mounted via a lifting cylinder. A crusher with a magnet, which connects the formwork of the installation and the inside of the frame, and the magnet device moves up and down along the guide member by the expansion and contraction operation of the lifting cylinder. 【請求項４】 磁石装置の昇降用シリンダの油圧系統を
破砕機の可動アームの駆動シリンダの油圧系統と連通さ
せる請求項１、２または３記載の磁石付き破砕機。4. The crushing machine with magnet according to claim 1, wherein the hydraulic system of the lifting cylinder of the magnet device communicates with the hydraulic system of the driving cylinder of the movable arm of the crushing machine. 【請求項５】 磁石装置の昇降用シリンダの油圧系統を
破砕機の可動アームの駆動シリンダの油圧系統と連通さ
せ、且つその連通管路の少なくとも一方に破砕機本体外
側から操作可能な開閉弁を設ける請求項１、２または３
記載の磁石付き破砕機。5. An on-off valve operable from outside the crusher body to at least one of the communication pipes, wherein a hydraulic system of a lifting cylinder of the magnet device communicates with a hydraulic system of a drive cylinder of a movable arm of the crusher. Claim 1, 2 or 3 provided
Crusher with magnet as described.