JPH08229417A - Jaw crusher for crushing soft matter - Google Patents
Jaw crusher for crushing soft matterInfo
- Publication number
- JPH08229417A JPH08229417A JP3537395A JP3537395A JPH08229417A JP H08229417 A JPH08229417 A JP H08229417A JP 3537395 A JP3537395 A JP 3537395A JP 3537395 A JP3537395 A JP 3537395A JP H08229417 A JPH08229417 A JP H08229417A
- Authority
- JP
- Japan
- Prior art keywords
- tooth
- fixed
- teeth
- crushed
- jaw plate
- 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.)
- Granted
Links
Landscapes
- Crushing And Grinding (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ジョークラッシャの改
善に係り、特に、アスファルト等の軟質物からなる被破
砕物の破砕に好適な軟質物破砕用のジョークラッシャに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved jaw crusher, and more particularly to a jaw crusher for crushing a soft material suitable for crushing a crushed object made of a soft material such as asphalt.
【０００２】[0002]
【従来の技術】以下、典型的な従来例に係るジョークラ
ッシャの構成を、その側面断面図の図３（ａ）と、固定
ジョープレートの固定歯とスイングジョープレートの可
動歯との対向配置状態説明図の図３（ｂ）とを参照しな
がら説明すると、フロントフレーム１には固定ジョープ
レート３が垂直状に固着され、この固定ジョープレート
３の固定歯３１の相対する側に、固定ジョープレート３
に対して下側が狭く、かつ上側が広くなるように、この
固定ジョープレート３の相対する側に可動歯４１を有す
るスイングジョープレート４が傾斜配設されたスイング
ジョー５に固着され、このスイングジョー５は上部に設
けられた偏心軸７の回転でスイングされるように構成さ
れている。また、固定ジョープレート３の固定歯３１
と、スイングジョープレート４の可動歯４１との歯先
は、図３（ｂ）に示すように、互いに対向している。な
お、固定ジョープレート３とスイングジョープレート４
との両端面の外側のそれぞれにサイドライナー６が配置
されており、これらは何れもフロントフレーム１と駆動
側のバックフレーム２と共に枠体を構成している。2. Description of the Related Art The structure of a jaw crusher according to a typical conventional example is shown in FIG. Describing with reference to FIG. 3B of the explanatory view, the fixed jaw plate 3 is vertically fixed to the front frame 1, and the fixed jaw plate 3 is provided on the opposite side of the fixed teeth 31. Three
The swing jaw plate 4 having the movable teeth 41 on the opposite side of the fixed jaw plate 3 is fixed to the tilted swing jaw 5 so that the lower side becomes narrower and the upper side becomes wider. 5 is configured to be swung by rotation of an eccentric shaft 7 provided on the upper portion. In addition, the fixed teeth 31 of the fixed jaw plate 3
And the tooth tops of the movable teeth 41 of the swing jaw plate 4 face each other as shown in FIG. The fixed jaw plate 3 and the swing jaw plate 4
Side liners 6 are arranged on the outer sides of both end surfaces of and, respectively, and both form a frame body together with the front frame 1 and the drive-side back frame 2.
【０００３】従って、偏心軸７の回転によりスイングジ
ョー５がスイングされると、スイングジョープレート４
が固定ジョープレート３に対して接近し、かつ離反する
運動を反復するので、このジョークラッシャの上側の投
入口８からスイングジョープレート４と固定ジョープレ
ート３との間に投入された被破砕物（図示省略）は固定
歯３１と可動歯４１とによって噛み砕かれて破砕され、
下側の排出口９から排出される。Therefore, when the swing jaw 5 is swung by the rotation of the eccentric shaft 7, the swing jaw plate 4 is moved.
Moves toward and away from the fixed jaw plate 3 repeatedly, so that the object to be crushed inserted between the swing jaw plate 4 and the fixed jaw plate 3 from the charging port 8 on the upper side of the jaw crusher ( (Not shown) is crushed by being crushed by the fixed teeth 31 and the movable teeth 41,
It is discharged from the lower discharge port 9.
【０００４】ところで、近年、アスファルトの破砕処理
が脚光を浴びてきている。しかしながら、上記構成にな
るジョークラッシャは破砕岩等の硬質の被破砕物を破砕
する場合に効果的であるが、被破砕物が、軟質なアスフ
ァルトのである場合には、固定歯３１と可動歯４１との
歯先が対向している関係上、これら固定歯３１と固定歯
３１との間や可動歯４１と可動歯４１との間、つまり歯
の谷部に被破砕物が噛込まれ、噛込まれた被破砕物がこ
の谷部に付着して目詰まりするために、軟質の被破砕物
を継続して破砕できなくなるという解決すべき課題があ
った。By the way, in recent years, asphalt crushing treatment has been in the limelight. However, the jaw crusher configured as described above is effective for crushing a hard crushed object such as crushed rock, but when the crushed object is soft asphalt, the fixed teeth 31 and the movable teeth 41 are used. Since the tooth tips of and are opposed to each other, the object to be crushed is bitten between the fixed teeth 31 and the fixed teeth 31 and between the movable teeth 41 and the tooth 41, that is, in the troughs of the teeth. There is a problem to be solved in that the crushed object that has been inserted adheres to the troughs and is clogged, so that the soft crushable object cannot be continuously crushed.
【０００５】このような実情に鑑み、特にアスファルト
のような軟質の被破砕物の破砕を狙いとしたジョークラ
ッシャが、例えば、特開平５−４９９５６号公報におい
て提案されている。以下、このジョークラッシャの構成
を、歯板の横断面図の図４を参照しながら説明する。但
し、ジョークラッシャ自体の主要構成は上記典型的なジ
ョークラッシャと同様で、その相違するところは、固定
ジョープレートの固定歯と、スイングジョープレートの
可動歯との形状、並びに配置にあるから、それらの構成
に係る説明に止める。In view of such circumstances, a jaw crusher aiming at crushing a soft crushed object such as asphalt has been proposed in, for example, Japanese Unexamined Patent Publication No. 5-49956. Hereinafter, the structure of the jaw crusher will be described with reference to FIG. 4 which is a cross-sectional view of the tooth plate. However, the main structure of the jaw crusher itself is the same as that of the above-mentioned typical jaw crusher, and the difference is in the shape and arrangement of the fixed teeth of the fixed jaw plate and the movable teeth of the swing jaw plate. Only the explanation related to the configuration of FIG.
【０００６】即ち、図４に示す符号３は、固定ジョープ
レートで、この固定ジョープレート３には同高さの歯高
で、かつ歯先角度が小さな固定歯３１が等ピッチで設け
られ、スイングジョープレート４には後述する可動歯４
１が設けられている。この可動歯４１は、固定歯３１の
ピッチの整数倍のピッチ（この例では３倍である。）の
丈が高く、かつ頂部が前記固定歯３１の谷底に対向する
切断用突起４１ａと、これら切断用突起４１ａと切断用
突起４１ａとの間の谷部の中央に設けられ、前記固定歯
３１の歯先の先端に対向する頂部を有する切断用突起４
１ａよりも丈の低い中央の破砕用突起４１ｃと、この中
央の破砕用突起４１ｃの両脇に設けられ、この中央の破
砕用突起４１ｃよりも丈が低く、かつ頂部が固定歯３１
と固定歯３１との間の谷底に対向する両側の破砕用突起
４１ｂ，４１ｂとからなる構成で、これら固定歯３１、
切断用突起４１ａ、中央の破砕用突起４１ｃ、両脇の破
砕用突起４１ｂによりアスファルトのような軟質の被破
砕物を切断すると共に破砕するものである。That is, the reference numeral 3 shown in FIG. 4 is a fixed jaw plate. The fixed jaw plate 3 is provided with fixed teeth 31 having the same tooth height and a small tip angle at equal pitches, and swings. The jaw plate 4 has movable teeth 4 which will be described later.
1 is provided. The movable teeth 41 have a height of a pitch that is an integral multiple of the pitch of the fixed teeth 31 (three times in this example), and a cutting protrusion 41a whose top faces the bottom of the fixed teeth 31 and these. The cutting projection 4 is provided at the center of the valley between the cutting projections 41a and 41a and has a top facing the tip of the tip of the fixed tooth 31.
1a is provided on both sides of the central crushing projection 41c, which is shorter than 1a, and is shorter than the central crushing projection 41c.
And the fixed teeth 31, the crushing projections 41b, 41b on both sides of the fixed teeth 31, which face the valley bottom.
The cutting projection 41a, the central crushing projection 41c, and the crushing projections 41b on both sides cut and crush a soft object to be crushed such as asphalt.
【０００７】[0007]
【考案が解決しようとする課題】上記従来例に係るジョ
ークラッシャはそれなりに有用であるが、固定歯、可動
歯の破砕用突起の配置や歯丈の高さに起因する欠陥があ
り、軟質な被破砕物の破砕能力並びに破砕粒度に係る解
決すべき課題がある。即ち、固定歯や可動歯の歯角度が
小さいため切断には適しているものの、これら歯の谷部
に被破砕物が付着して目詰まりするので被破砕物の破砕
能力が低下し、安定した破砕能率を維持できないという
解決すべき課題がある。The jaw crusher according to the above-mentioned conventional example is useful as such, but it has a defect due to the arrangement of the crushing projections of the fixed teeth and the movable teeth and the height of the tooth, and is therefore soft. There are issues to be solved concerning the crushing ability of the crushed object and the crushed particle size. That is, since the fixed teeth and the movable teeth have small tooth angles, they are suitable for cutting, but the crushed material adheres to the troughs of these teeth and causes clogging, which reduces the crushing ability of the crushed objects and stabilizes them. There is a problem to be solved that the crushing efficiency cannot be maintained.
【０００８】また、切断用突起のピッチが大きく、破砕
用の中央の破砕用突起と両脇の破砕用突起の高さが低い
ために、被破砕物を破砕することが難しく、必然的に破
砕粒度が大きくなるという解決すべき課題がある。勿
論、固定歯や切断用突起のピッチを小さくすれば、被破
砕物を小粒度に破砕し得ると考えられるが、ピッチが小
さ過ぎると軟質の被破砕物が歯の谷部に付着して目詰ま
りしてしまうので、被破砕物の破砕能率の向上にとって
好ましくない。Further, since the pitch of the cutting projections is large and the height of the crushing projections for crushing at the center and the crushing projections on both sides are low, it is difficult to crush the object to be crushed, and crushing is inevitable. There is a problem to be solved that the grain size becomes large. Of course, if the pitch of the fixed teeth or cutting projections is made smaller, it is thought that the material to be crushed can be crushed to a smaller particle size, but if the pitch is too small, the soft crushable material will stick to the roots of the teeth and become visible. It is clogged, which is not preferable for improving the crushing efficiency of the crushed object.
【０００９】従って、本発明の目的とするところは、軟
質な被破砕物の破砕に際して、歯の谷部への目詰まりに
よる破砕能率低下がなく、しかも適度の粒度に破砕する
ことを可能ならしめる軟質物破砕用のジョークラッシャ
を提供するにある。Therefore, the object of the present invention is to make it possible to crush a soft object to be crushed to an appropriate particle size without lowering the crushing efficiency due to clogging of the tooth valleys. To provide a jaw crusher for crushing soft materials.
【００１０】[0010]
【課題を解決するための手段】発明者等は、鋭意研究を
重ねた結果、被破砕物がアスファルトのように軟質な場
合には、剪断よりも曲げによる方が小荷重で効果的に破
砕することができ、また破砕粒度を小さくするために破
砕歯のピッチを小さくし過ぎると目詰まりしやすいが、
ピッチを５０ｍｍ以上にすると共に、歯角度を６０度以
上にすると付着による目詰まり防止に効果があることを
知見してなしたものである。As a result of intensive studies, the inventors of the present invention have found that when the material to be crushed is as soft as asphalt, it is more effective to crush with a small load by bending rather than by shearing. In addition, if the pitch of the crushing teeth is too small to reduce the crushing particle size, clogging easily occurs, but
The inventors have found that setting the pitch to 50 mm or more and the tooth angle to 60 degrees or more is effective in preventing clogging due to adhesion.
【００１１】従って、本発明に係る軟質物破砕用のジョ
ークラッシャが採用した手段の特徴とするところは、固
定歯を有する固定ジョープレートが配設され、該固定ジ
ョープレートの相対する側に可動歯を有するスイングジ
ョープレートが固着されると共に、前記固定ジョープレ
ートに対して接近し、かつ離反する作動を反復するスイ
ングジョーを備えた軟質物破砕用のジョークラッシャに
おいて、前記固定ジョープレートの固定歯とスイングジ
ョープレートの可動歯との歯先のレベルを同一レベルに
し、固定歯の歯先の先端と可動歯の谷底とを対向させ、
これら固定歯と可動歯との歯丈を５２ｍｍ以上にし、か
つピッチを５０ｍｍ〜９０ｍｍにすると共に、歯角度２
αを６０度〜８０度にしたところにある。Therefore, the feature of the means adopted by the jaw crusher for crushing soft matter according to the present invention is that a fixed jaw plate having fixed teeth is provided, and movable teeth are provided on opposite sides of the fixed jaw plate. In a jaw crusher for crushing soft objects, the swing jaw plate having a fixed jaw plate is fixed, and a swing jaw that repeats an operation of approaching and separating from the fixed jaw plate is used. The level of the tip of the movable tooth of the swing jaw plate is set to the same level, and the tip of the tip of the fixed tooth and the root of the movable tooth are opposed to each other,
The fixed tooth and the movable tooth have a tooth height of 52 mm or more, a pitch of 50 mm to 90 mm, and a tooth angle of 2
It is in the range where α is set to 60 to 80 degrees.
【００１２】[0012]
【作用】いま、楔の打込時における力のバランス状態説
明図の図２（ａ）に示すように、Ｐを打込力、Ｐ′を引
抜力、Ｒを楔面に生じる反力、Ｑを楔力（楔が歯を押し
広げようとする力に対する反力）、ρを摩擦角、２αを
歯角度として、歯の谷部に詰まる軟質物を楔と考え、軟
質物からなる楔Ｋが抜出てくる条件を考える。Now, as shown in FIG. 2A of the force balance state explanatory diagram at the time of driving the wedge, P is the driving force, P'is the pulling force, R is the reaction force generated on the wedge surface, and Q is Is the wedge force (reaction force against the force that the wedge tries to spread the teeth), ρ is the friction angle, 2α is the tooth angle, and the soft object clogged in the root of the tooth is considered as the wedge, and the wedge K made of the soft object is Think about the conditions that will come out.
【００１３】即ち、力の釣り合いから、楔Ｋの打込力Ｐ
＝２Ｒｓｉｎ（α＋ρ）となり、また楔力Ｑ＝ Ｒｃｏ
ｓ（α＋ρ）となる。従って、これら両式のＰとＱとの
間には、下記（１）式が成立する。 Ｑ＝Ｐ／２ｔａｎ（α＋ρ）‥‥‥（１） 次に、楔を引き抜く場合を考える。即ち、摩擦角ρの傾
きは、楔を打込むときに比べ、法線に対して反対側に傾
くので、（１）式のρに−ρを、Ｐに−Ｐ′をそれぞれ
代入して下記（２）式が得られる。 Ｐ′＝２Ｑｔａｎ（ρ−α）‥‥‥（２） この（２）式において、楔が抜出る条件はＰ′≦０であ
るから、αとρとの間には下記（３）式に示す関係が成
立する。 α≧ρ‥‥‥‥‥‥‥‥‥‥‥‥‥（３） 軟質物である被破砕物が、例えばアスファルトである場
合、アスファルトと鉄との摩擦係数μは、実験からμ＝
０．４１〜０．４６の値が得られているので、（３）式
のρにｔａｎ-1μを代入すると、α≧ｔａｎ-1（０．４
１〜０．４６）が得られる。従って、α≧２２．３°〜
２４．７°となるから、楔が抜出る歯の角度２αは４
４．６度〜４９．４度となるが、余裕を見込んで２αを
６０度以上にすると、噛込まれたアスファルトは歯の谷
部から抜出すことになる。That is, from the balance of forces, the driving force P of the wedge K is
= 2Rsin (α + ρ) and wedge force Q = Rco
s (α + ρ). Therefore, the following equation (1) is established between P and Q in these equations. Q = P / 2tan (α + ρ) (1) Next, consider the case where the wedge is pulled out. That is, since the inclination of the friction angle ρ is inclined to the opposite side to the normal line when the wedge is driven, by substituting −ρ for ρ and −P ′ for P in the equation (1), Expression (2) is obtained. P ′ = 2Qtan (ρ−α) (2) In this equation (2), the condition for the wedge to pull out is P ′ ≦ 0. Therefore, the following equation (3) should be used between α and ρ. The relationship shown is established. α ≧ ρ ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ (3) If the soft material to be crushed is, for example, asphalt, the friction coefficient µ between asphalt and iron is µ =
Since values of 0.41 to 0.46 are obtained, substituting tan −1 μ for ρ in the equation (3), α ≧ tan −1 (0.4
1 to 0.46) are obtained. Therefore, α ≧ 22.3 °
Since the angle is 24.7 °, the tooth angle 2α from which the wedge is pulled out is 4
The angle becomes 4.6 degrees to 49.4 degrees, but if 2α is set to 60 degrees or more in consideration of a margin, the bitten asphalt will be extracted from the root of the tooth.
【００１４】ところで、固定歯と可動歯とのピッチＰ、
歯角度２α、および歯丈ｈの間には、歯の形状説明図の
図２（ｂ）から良く理解されるように、Ｐ＝２ｈｔａｎ
αの関係式が成立するから、Ｐ＝２×５２×ｔａｎ２
４．７°＝４８ｍｍとなるが、ピッチＰの最小値が５０
ｍｍであるから、歯の谷部に被破砕物が詰まったりする
ことがない。また、ピッチの最大が９０ｍｍであるか
ら、被破砕物は４５ｍｍ以下の粒度に破砕される。By the way, the pitch P between the fixed teeth and the movable teeth,
Between the tooth angle 2α and the tooth height h, as is well understood from FIG. 2B of the tooth shape explanatory diagram, P = 2htan.
Since the relational expression of α is established, P = 2 × 52 × tan2
4.7 ° = 48 mm, but the minimum value of the pitch P is 50
Since it is mm, the crushed object will not be clogged in the valley portion of the tooth. Moreover, since the maximum pitch is 90 mm, the crushed material is crushed to a particle size of 45 mm or less.
【００１５】一方、固定歯と可動歯との最大の歯角度２
αは最大のピッチＰと最小の歯丈ｈとの値によって決定
される。即ち、α＝ｔａｎ-1（Ｐ／２ｈ）に、Ｐ＝９０
ｍｍ、ｈ＝５２ｍｍをそれぞれ代入してαを求めると、
α＝４０．６度となるから、最大の歯角度２αは８１．
２度（≒８０度）となる。On the other hand, the maximum tooth angle 2 between the fixed tooth and the movable tooth is 2.
α is determined by the values of the maximum pitch P and the minimum tooth height h. That is, α = tan −1 (P / 2h), P = 90
mm and h = 52 mm are respectively substituted to obtain α,
Since α = 40.6 degrees, the maximum tooth angle 2α is 81.
It becomes 2 degrees (≈80 degrees).
【００１６】従って、本発明に係る軟質物破砕用のジョ
ークラッシャによれば、固定ジョープレートの固定歯と
スイングジョープレートの可動歯との歯先のレベルが同
一レベルで、かつ固定歯の歯先の先端と可動歯の谷底と
が対向しているので、被破砕物に対して効果的に曲げ力
を作用させて破砕することができる。また、これら歯の
ピッチが５０ｍｍ以上で、かつ歯角度２αが６０度以上
であるため、上記の理由により軟質の被破砕物が歯の谷
部に詰まるようなことがない。Therefore, according to the jaw crusher for crushing soft objects of the present invention, the tooth levels of the fixed teeth of the fixed jaw plate and the movable teeth of the swing jaw plate are the same, and the tooth tips of the fixed teeth are the same. Since the tip of the and the bottom of the movable tooth are opposed to each other, it is possible to effectively apply a bending force to the crushed object to crush it. In addition, since the tooth pitch is 50 mm or more and the tooth angle 2α is 60 degrees or more, the soft crushed material does not clog the roots of the teeth due to the above reasons.
【００１７】[0017]
【実施例】以下、本発明の実施例を、ジョークラッシャ
の側面断面図の図１（ａ）と、固定ジョープレートの固
定歯とスイングジョープレートの可動歯との対向配置状
態説明図の図１（ｂ）とを参照しながら、従来例と同一
のもの並びに同一機能を有するものを同一符号を持って
説明する。但し、ジョークラッシャの主要構成は従来例
のものと同一であって、その相違するところは、固定ジ
ョープレートの固定歯とスイングジョープレートの可動
歯との配置にあるから、ジョークラッシャ自体の説明に
ついてはその概要に止める。1 is a side sectional view of a jaw crusher and FIG. 1 is an explanatory view showing a state in which a fixed tooth of a fixed jaw plate and a movable tooth of a swing jaw plate are opposed to each other. With reference to (b), the same components and components having the same functions as those of the conventional example will be described with the same reference numerals. However, the main structure of the jaw crusher is the same as that of the conventional example, and the difference is in the arrangement of the fixed teeth of the fixed jaw plate and the movable teeth of the swing jaw plate. Stops at the outline.
【００１８】本実施例に係る軟質物破砕用のジョークラ
ッシャの構成は、図１（ａ）に示すように従来と同様で
ある。即ち、固定ジョープレート３が垂直状に固着さ
れ、この固定ジョープレート３側にスイングジョープレ
ート４が固着されてなるスイングジョー５が固定ジョー
プレート３に対して接近し、かつ離反する運動を反復す
るように構成されている。また、固定ジョープレート３
の固定歯３１の歯先の先端と、スイングジョープレート
４の可動歯４１の谷底とは、図１（ｂ）に示すように、
対向配置されている。これら、固定歯３１と可動歯４１
との歯角度２α、歯丈ｈ（歯の山部と谷部とのＲを考慮
した実歯丈はこの歯丈ｈより低い。）は同一で、例えば
歯角度２αは何れも６０度〜８０度で、歯丈の高さは５
２ｍｍ以上である。そして、固定歯３１と可動歯４１と
のピッチＰは同一であり、５０ｍｍ〜９０ｍｍに設定さ
れている。なお、図１（ａ）において、符号１はフロン
トフレーム、符号２はバックフレーム、符号７は偏心
軸、符号８は投入口、符号９は排出口である。The structure of the jaw crusher for crushing soft material according to this embodiment is the same as the conventional one as shown in FIG. 1 (a). That is, the fixed jaw plate 3 is vertically fixed, and the swing jaw 5 having the swing jaw plate 4 fixed to the fixed jaw plate 3 side repeats the motion of approaching and separating from the fixed jaw plate 3. Is configured. In addition, the fixed jaw plate 3
As shown in FIG. 1B, the tip of the tooth tip of the fixed tooth 31 and the bottom of the movable tooth 41 of the swing jaw plate 4 are
It is arranged opposite. These are fixed teeth 31 and movable teeth 41.
And the tooth angle 2α and the tooth height h (the actual tooth length considering R of the crests and the troughs of the tooth is lower than this tooth height h) are the same, for example, the tooth angle 2α is 60 degrees to 80 degrees. Degree and tooth height is 5
It is 2 mm or more. The fixed tooth 31 and the movable tooth 41 have the same pitch P and are set to 50 mm to 90 mm. In FIG. 1A, reference numeral 1 is a front frame, reference numeral 2 is a back frame, reference numeral 7 is an eccentric shaft, reference numeral 8 is an inlet, and reference numeral 9 is an outlet.
【００１９】ところで、固定歯３１の歯先の先端と可動
歯４１の谷底とを対向させたのは、被破砕物がアスファ
ルトのように軟質の場合には、切断よりも曲げ力を作用
させる方が、小動力でしかも高効率で破砕し得るからで
あり、また歯角度２αを６０度〜８０度にしたのは、歯
角度２αが小角度、つまり鋭利すぎると、歯の谷部に目
詰まりが生じ易いということを知見したからである。つ
まり、図２（ａ）に基づいて説明した理由によって、こ
れら歯３１，４１の歯角度２αを６０度以上にすると、
固定ジョープレート３とスイングジョープレート４とに
噛込まれたアスファルトがこれら歯３１，４１の谷部か
ら抜出すからであり、また歯角度２αの最大値８０ｍｍ
は、α＝ｔａｎ-1（Ｐ／２ｈ）の式に最小の歯丈ｈ５２
ｍｍと最大ピッチＰ９０ｍｍとを代入して求めたもので
ある。By the way, the tips of the tips of the fixed teeth 31 and the roots of the movable teeth 41 are made to face each other because, when the object to be crushed is soft such as asphalt, a bending force is applied rather than cutting. However, it is possible to crush with a small amount of power and with high efficiency. Also, the reason why the tooth angle 2α is set to 60 degrees to 80 degrees is that the tooth angle 2α is a small angle, that is, if the tooth angle 2α is too sharp, the tooth troughs are clogged. This is because it was found that That is, if the tooth angle 2α of the teeth 31 and 41 is set to 60 degrees or more for the reason described with reference to FIG.
This is because the asphalt caught in the fixed jaw plate 3 and the swing jaw plate 4 is pulled out from the valleys of these teeth 31, 41, and the maximum tooth angle 2α is 80 mm.
Is the minimum tooth length h52 in the formula of α = tan −1 (P / 2h).
mm and the maximum pitch P90 mm are substituted.
【００２０】固定歯３１と可動歯４１とのピッチＰを５
０ｍｍ〜９０ｍｍにしたのは、ピッチＰが５０ｍｍ未満
であると歯の谷部に、被破砕物が付着して目詰まりを生
じ易いが、歯角度２αとの関連において、ピッチＰが５
０ｍｍ以上になると歯の谷部に殆ど目詰まりがないこと
を知見したからである。即ち、ピッチＰの最小値５０ｍ
ｍについては、図＊に基づいて説明したとおり、Ｐ＝２
ｈｔａｎαの式に歯丈ｈ＝５２ｍｍ、α＝２４．７度を
代入してピッチＰ＝４８ｍｍを求め、これを切り上げて
５０ｍｍとしたものである。また、ピッチＰの最大値９
０ｍｍについては、実機による運転結果によって導出し
たもので、出口セット（開き側）が９０ｍｍを越える
と、被破砕物の破砕粒度が粗く、下流側機器である二次
クラッシャ（インパクトクラッシャ）の負荷が過大にな
るからである。The pitch P between the fixed teeth 31 and the movable teeth 41 is set to 5
When the pitch P is less than 50 mm, the object to be crushed is easily attached to the root of the tooth to cause clogging when the pitch P is less than 50 mm. However, in relation to the tooth angle 2α, the pitch P is 5 mm.
This is because it was found that there is almost no clogging in the valleys of the teeth when the distance is 0 mm or more. That is, the minimum value of the pitch P is 50 m
As for m, P = 2 as described with reference to Fig. *.
The tooth height h = 52 mm and α = 24.7 degrees are substituted into the formula of htan α to obtain the pitch P = 48 mm, which is rounded up to 50 mm. Also, the maximum value of the pitch P is 9
0 mm is derived from the operation results of the actual machine. When the outlet set (open side) exceeds 90 mm, the crushed particles of the crushed object are coarse, and the load of the secondary crusher (impact crusher), which is the downstream side equipment, is reduced. Because it will be too large.
【００２１】さらに、固定歯３１と可動歯４１との歯丈
を５２ｍｍ以上としたのは、これら歯３１，４１の摩耗
によるジョープレート３，４の寿命の延長を狙いとした
ものである。Further, the reason why the fixed teeth 31 and the movable teeth 41 have a tooth length of 52 mm or more is to extend the life of the jaw plates 3 and 4 due to the wear of these teeth 31 and 41.
【００２２】従って、偏心軸７の回転でスイングジョー
５がスイングされると、従来と同様に、スイングジョー
プレート４が固定ジョープレート３に対して接近し、か
つ離反する運動を反復するので、このジョークラッシャ
の上側の投入口８からスイングジョープレート４と固定
ジョープレート３との間に投入された被破砕物は固定歯
３１と可動歯４１とによって噛み砕かれて破砕され、下
側の排出口９から排出されるが、固定ジョープレート３
の固定歯３１の歯先の先端とスイングジョープレート４
の可動歯４１の谷底とが対向しているので、アスファル
トのように軟質の被破砕物に対して確実に曲げ力を作用
させ、そしてピッチＰが５０ｍｍ〜９０ｍｍ、かつ歯角
度２αが６０度〜８０度で、歯の谷底に軟質の被破砕物
が付着して目詰まりするようなことがないので、被破砕
物をピッチＰ５０ｍｍ〜９０ｍｍの半分以下の粒度に高
効率で破砕することができる。Therefore, when the swing jaw 5 is swung by the rotation of the eccentric shaft 7, the swing jaw plate 4 repeats the movement toward and away from the fixed jaw plate 3 as in the conventional case. The object to be crushed, which has been charged between the swing jaw plate 4 and the fixed jaw plate 3 from the charging port 8 on the upper side of the jaw crusher, is crushed by being crushed by the fixed teeth 31 and the movable teeth 41, and the discharging port on the lower side. 9 is discharged from the fixed jaw plate 3
Tip of tip of fixed tooth 31 and swing jaw plate 4
Since the bottom of the movable tooth 41 of the above is opposed, a bending force is surely applied to a soft crushed object such as asphalt, and the pitch P is 50 mm to 90 mm, and the tooth angle 2α is 60 degrees or more. At 80 degrees, there is no possibility that a soft crushable object adheres to the roots of the teeth and becomes clogged, so that the crushable object can be crushed to a particle size of half or less of the pitch P of 50 mm to 90 mm with high efficiency.
【００２３】なお、ジョークラッシャには種々の形式の
ものが知られているが、固定歯を有する固定ジョープレ
ートと、可動歯を有するスイングジョープレートとを備
えた全てのジョークラッシャに対して、本発明の技術的
思想を適用することが可能である。また、以上では歯丈
が同一である場合を例として説明したが、歯丈が同一で
なくでも、歯先のレベルが同一レベルであれば良い。ま
た、歯角度２αについては６０度〜８０度の範囲にあれ
ば特に同一である必要はなく、さらにピッチＰも同一で
ある必要がなく、固定歯３１の歯先の先端と可動歯４１
の谷底とが対向し、かつピッチＰが５０ｍｍ〜９０ｍｍ
の範囲であれば良い。Various types of jaw crushers are known, but for all jaw crushers provided with a fixed jaw plate having fixed teeth and a swing jaw plate having movable teeth, the present invention is applicable to all jaw crushers. It is possible to apply the technical idea of the invention. Further, in the above description, the case where the tooth heights are the same has been described as an example, but the tooth tips need not have the same level even if the tooth heights are not the same. Further, the tooth angles 2α need not be particularly the same as long as they are in the range of 60 ° to 80 °, and the pitch P does not have to be the same either.
And the pitch P is 50 mm to 90 mm.
It should be in the range of.
【００２４】[0024]
【発明の効果】以上詳述したように、本発明に係る軟質
物破砕用のジョークラッシャによれば、切断よりも破砕
能率が優れた曲げ力による破砕を考慮して固定歯の歯先
と可動歯の間の谷底とを対向させ、歯の谷部の目詰まり
し難さを考慮して歯のピッチを５０ｍｍ〜９０ｍｍにす
ると共に、歯角度を６０度〜８０度にしたので、従来の
ジョークラッシャに比較して軟質物からなる被破砕物を
高能率でしかも適度の粒度に破砕することが可能にな
り、アスファルトのような軟質の被破砕物の破砕処理能
率向上に対して極めて多大な効果がある。As described above in detail, according to the jaw crusher for crushing a soft material according to the present invention, it is possible to move the fixed tooth tip and the movable tooth tip in consideration of crushing due to bending force, which has a crushing efficiency superior to cutting. Since the pitch of the teeth is set to 50 mm to 90 mm and the tooth angle is set to 60 degrees to 80 degrees in consideration of the difficulty of clogging of the roots of the teeth, the conventional jaws are made to face each other. Compared to crushers, it is possible to crush crushed objects made of soft materials with high efficiency and to an appropriate particle size, and it is extremely effective for improving the crushing efficiency of soft crushed objects such as asphalt. There is.
【図１】図１（ａ）は本発明の実施例に係るジョークラ
ッシャの側面断面図であり、図１（ｂ）は固定ジョープ
レートの固定歯とスイングジョープレートの可動歯との
対向配置状態説明図である。FIG. 1 (a) is a side sectional view of a jaw crusher according to an embodiment of the present invention, and FIG. 1 (b) is a state in which fixed teeth of a fixed jaw plate and movable teeth of a swing jaw plate are opposed to each other. FIG.
【図２】図２（ａ）は楔の打込時における力のバランス
状態説明図であり、図２（ｂ）は歯の形状説明図であ
る。FIG. 2A is an explanatory view of a force balance state when driving a wedge, and FIG. 2B is an explanatory view of a tooth shape.
【図３】図３（ａ）は従来例に係るジョークラッシャの
側面断面図であり、図３（ｂ）は固定ジョープレートの
固定歯とスイングジョープレートの可動歯との対向配置
状態説明図である。FIG. 3 (a) is a side sectional view of a jaw crusher according to a conventional example, and FIG. 3 (b) is an explanatory view of a state where fixed teeth of a fixed jaw plate and movable teeth of a swing jaw plate are opposed to each other. is there.
【図４】従来例（特開平５−４９９５６号公報）に係る
ジョークラッシャの歯板の横断面図である。FIG. 4 is a transverse cross-sectional view of a tooth plate of a jaw crusher according to a conventional example (Japanese Patent Laid-Open No. 5-49956).
１…フロントフレーム ２…バックフレーム ３…固定ジョープレート、３１…固定歯 ４…スイングジョープレート、４１…可動歯 ５…スイングジョー ６…サイドライナー ７…偏心軸 ８…投入口 ９…排出口 ｈ…歯丈 Ｐ…歯のピッチ ２α…歯角度 DESCRIPTION OF SYMBOLS 1 ... Front frame 2 ... Back frame 3 ... Fixed jaw plate, 31 ... Fixed tooth 4 ... Swing jaw plate, 41 ... Movable tooth 5 ... Swing jaw 6 ... Side liner 7 ... Eccentric shaft 8 ... Input port 9 ... Discharge port h ... Tooth length P ... Tooth pitch 2α ... Tooth angle
Claims (1)
設され、該固定ジョープレートの相対する側に可動歯を
有するスイングジョープレートが固着されると共に、前
記固定ジョープレートに対して接近し、かつ離反する作
動を反復するスイングジョーを備えた軟質物破砕用のジ
ョークラッシャにおいて、前記固定ジョープレートの固
定歯とスイングジョープレートの可動歯との歯先のレベ
ルを同一レベルにし、固定歯の歯先の先端と可動歯の谷
底とを対向させ、これら固定歯と可動歯との歯丈を５２
ｍｍ以上にし、かつピッチを５０ｍｍ〜９０ｍｍにする
と共に、歯角度２αを６０度〜８０度にしたことを特徴
とする軟質物破砕用のジョークラッシャ。1. A fixed jaw plate having fixed teeth is disposed, a swing jaw plate having movable teeth is fixed to opposite sides of the fixed jaw plate, and the swing jaw plate is close to the fixed jaw plate and In a jaw crusher for crushing soft objects, which has a swing jaw that repeats the operation of separating, the tooth tips of the fixed teeth of the fixed jaw plate and the movable teeth of the swing jaw plate are set to the same level, and the tooth tips of the fixed teeth are set. The tip of the movable tooth and the root of the movable tooth are opposed to each other, and the tooth height of the fixed tooth and the movable tooth is 52
A jaw crusher for crushing soft objects, which has a pitch of 50 mm to 90 mm and a tooth angle 2α of 60 to 80 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3537395A JP2901891B2 (en) | 1995-02-23 | 1995-02-23 | Jaw crusher for soft material crushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3537395A JP2901891B2 (en) | 1995-02-23 | 1995-02-23 | Jaw crusher for soft material crushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08229417A true JPH08229417A (en) | 1996-09-10 |
| JP2901891B2 JP2901891B2 (en) | 1999-06-07 |
Family
ID=12440103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3537395A Expired - Lifetime JP2901891B2 (en) | 1995-02-23 | 1995-02-23 | Jaw crusher for soft material crushing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2901891B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012130127A1 (en) * | 2011-03-28 | 2012-10-04 | 浙江黑白矿山机械有限公司 | Multi-functional pair of crushing plates having self-tooth trimming capability |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012810B (en) * | 2018-07-16 | 2021-07-09 | 滕州道智盛智能科技有限公司 | Crushing and screening device for building |
-
1995
- 1995-02-23 JP JP3537395A patent/JP2901891B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012130127A1 (en) * | 2011-03-28 | 2012-10-04 | 浙江黑白矿山机械有限公司 | Multi-functional pair of crushing plates having self-tooth trimming capability |
| US9375717B2 (en) | 2011-03-28 | 2016-06-28 | Zhejiang Shengda Machinery Co.Ltd | Multi-functional pair of crushing plates capable of self-trimming |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2901891B2 (en) | 1999-06-07 |
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