JPH08126847A - Jaw crusher for intermediate crushing - Google Patents
Jaw crusher for intermediate crushingInfo
- Publication number
- JPH08126847A JPH08126847A JP28875994A JP28875994A JPH08126847A JP H08126847 A JPH08126847 A JP H08126847A JP 28875994 A JP28875994 A JP 28875994A JP 28875994 A JP28875994 A JP 28875994A JP H08126847 A JPH08126847 A JP H08126847A
- Authority
- JP
- Japan
- Prior art keywords
- crushing chamber
- crushing
- crushed
- supply port
- jaw crusher
- 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ー、特
に中粗砕用のジョークラッシャーの改善に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved jaw crusher, particularly a jaw crusher for medium crushing.
【０００２】[0002]
【従来の技術】岩石などを破砕して土木、建築物を構築
する骨材として利用するためには、発破によって得られ
た原石を所望の粒度に破砕しなければならないが、一段
の破砕で目的の粒度にまで砕くことは困難であるから、
粗砕（一次破砕）として原石を４００〜２００ｍｍ程度
の一次産品まで砕き、中砕（二次破砕）として一次産品
を１００〜５０ｍｍの二次産品まで砕き、細砕（三次破
砕）として２０〜５ｍｍ程度にまで砕く。このような破
砕の手順を段階破砕と呼び、それぞれの段階において適
切な能力を具えた破砕機が設置されるが、特に粗砕用と
中砕用にはジョークラッシャーが有効に使用されてい
る。2. Description of the Related Art In order to crush rocks and use them as aggregates for constructing civil engineering and buildings, the rough stones obtained by blasting must be crushed to a desired grain size, but the purpose of crushing is to achieve It is difficult to crush to the particle size of
As rough crushing (primary crushing), the rough stone is crushed to a primary product of about 400 to 200 mm, as medium crushing (secondary crushing), the primary product is crushing to a secondary product of 100 to 50 mm, and as fine crushing (third crushing), 20 to 5 mm. Crush to a degree. Such a crushing procedure is called step crushing, and a crusher having an appropriate capacity is installed at each step, and a jaw crusher is effectively used especially for coarse crushing and medium crushing.
【０００３】ジョークラッシャーは原石破砕プラントの
中核として採石場に設けられ、その一般的な基本形状と
してシングルジョークラッシャーを取り上げ、本発明の
実施例を示す図１を引用しつつ説明する。図においてモ
ータの駆動をベルト掛けでプーリ６に伝え、偏心軸７に
よってスイングジョー８の昇降運動を介してトグルプレ
ート９を強制的に動かすことによって動歯３を揺動す
る。動歯３はテンションロッド１０を介してスプリング
１１の付勢力が働いて元の位置へ戻され、この運動が繰
り返されて固定歯２と動歯３とで形成する断面Ｖ形の破
砕室１内へ供給された被砕物を噛み砕く。The jaw crusher is provided in a quarry as the core of a rough crushing plant, and a single jaw crusher is taken as a general basic shape of the jaw crusher. An explanation will be given with reference to FIG. 1 showing an embodiment of the present invention. In the figure, the drive of the motor is transmitted to the pulley 6 by belting, and the movable plate 3 is swung by forcibly moving the toggle plate 9 through the up-and-down movement of the swing jaw 8 by the eccentric shaft 7. The moving tooth 3 is returned to its original position by the urging force of the spring 11 acting through the tension rod 10, and this movement is repeated so that the inside of the crushing chamber 1 having a V-shaped cross section formed by the fixed tooth 2 and the moving tooth 3. The object to be crushed is crushed.
【０００４】採石場のプラントを設計するに際して決定
すべき条件は、最終の製品（土建用の骨材）の生産能力
に対して一貫した段階破砕に要するそれぞれの破砕能力
の整合性である。岩石の穿孔パターン（深さと間隔）、
爆薬量、発破原石の積み込みシャベルの大きさと各段階
の破砕機の能力のマッチング、特に砕石切羽から供給さ
れる原石はすべて粗砕用ジョークラッシャーの供給口を
通過できなければならないし、粗砕用ジョークラッシャ
ーから排出された一次産品は次に並ぶ中砕用ジョークラ
ッシャーの供給口をすべて通過しなければならない。も
し、この間に被砕物の滞留が発生すると、その段階の工
程が停止するだけでなく、後の工程すべてに影響が出る
から、プラント全体が能率的に運転を継続する上で、各
段階のジョークラッシャー毎に被砕物を円滑に受渡しす
ることは何よりも必要な条件である。The condition to be determined when designing a quarry plant is the consistency of each crushing capacity required for consistent step crushing with respect to the production capacity of the final product (aggregate for earth construction). Rock drilling pattern (depth and spacing),
Matching explosive amount, blasting ore loading shovel size and crusher capacity at each stage, especially all ore supplied from crushed stone face must be able to pass through the jaw crusher supply port for coarse crushing The primary products discharged from the jaw crusher must pass through all the supply ports of the jaw crushers for medium crushing that are arranged next to each other. If crushed material accumulates during this period, not only will the process at that stage be stopped, but all subsequent processes will be affected, so that the entire plant will continue to operate efficiently. The smooth delivery of the crushed material for each crusher is the most necessary condition.
【０００５】ジョークラッシャーから得られる産品は破
砕室下端の出口隙間ｄによって粒度が決められる。ジョ
ークラッシャーの破砕比は供給口５の開き寸法Ｄと前記
出口隙間ｄとの比で表わすことが多いが、通常は４〜９
の範囲で設定される。この破砕性は破砕室の全体の高さ
と両歯が交叉する角度（噛み角度）と出口隙間ｄの寸法
により決定されるが、角度が大き過ぎると原石は飛び上
がって破砕されなくなるので通常は２４°前後に制約さ
れる。想定される被砕物の最大の幅寸法をＷとすると、
この被砕物を受入れる破砕室頂端で形成する供給口５の
開き寸法ＤはＷ＝０．８Ｄ の関係が成立するようにＤ
を設定すれば原石の供給に支障はないと判断されるか
ら、前記の角度と、目標とする破砕比とから破砕室の全
高が算出され、破砕室全体の設計諸元が確立して構造が
決定する。このようにジョークラッシャーの破砕室の各
寸法間には実経験に基づいて慣用的な関係が成立し、実
プラントの計画時に踏襲されているのが現況である。The product obtained from the jaw crusher has a grain size determined by the exit gap d at the lower end of the crushing chamber. The crushing ratio of the jaw crusher is often represented by the ratio of the opening size D of the supply port 5 and the outlet gap d, but usually 4-9.
It is set in the range of. This crushability is determined by the overall height of the crushing chamber, the angle at which both teeth intersect (biting angle), and the size of the exit gap d. However, if the angle is too large, the rough stone jumps up and is not crushed. It is restricted to the front and back. Assuming that the maximum width of the crushed object is W,
The opening size D of the supply port 5 formed at the top end of the crushing chamber that receives this crushed material is D so that the relation of W = 0.8D is established.
If it is set that there is no hindrance to the supply of rough stones, the total height of the crushing chamber is calculated from the above angle and the target crushing ratio, and the design specifications of the crushing chamber as a whole are established. decide. In this way, a conventional relationship is established between the dimensions of the crushing chamber of the jaw crusher based on actual experience, and is currently being followed when planning the actual plant.
【０００６】供給口５の開き寸法Ｄは出口隙間ｄとの関
係で直接破砕比を変動する要素であるから、従来からジ
ョークラッシャーの設計や改善に当って真っ先に着目さ
れてきた。たとえば特公昭５６−４２９７９号公報の従
来技術では、ジョークラッシャーの投入できる被砕物の
サイズが供給口の大きさで限定されるので、通常決めら
れたサイズ以上の原石に遭遇したときに対応できるよう
に、固定歯を上下二分して必要なときには上方部分の固
定歯を動歯に対して後退させ、所定の大きさよりも大き
な被砕物でも噛み込むことができると謳っている。ま
た、特開昭５７−１１０３４２号公報では、前記の従来
技術に対し上部の固定歯と対向する動歯の部分の歯のピ
ッチを下方の歯のピッチよりも大きくして、大きな被砕
物の破砕に必要な押し潰し力を与えたとしている。Since the opening size D of the supply port 5 is a factor that directly changes the crushing ratio in relation to the outlet gap d, conventionally, attention has been paid to the design and improvement of the jaw crusher. For example, in the prior art of Japanese Examined Patent Publication No. 56-42979, the size of the crushed object that can be put into the jaw crusher is limited by the size of the supply port, so that it is possible to deal with a rough stone having a size larger than a predetermined size. In addition, it is stated that the fixed tooth is divided into upper and lower parts, and when necessary, the fixed tooth in the upper part is retracted with respect to the moving tooth, and even a crushed object larger than a predetermined size can be bitten. Further, in Japanese Unexamined Patent Publication No. 57-110342, in comparison with the above-mentioned conventional technique, the pitch of the teeth of the moving teeth facing the upper fixed teeth is made larger than the pitch of the lower teeth to crush a large object to be crushed. He said that he gave the necessary crushing force.
【０００７】[0007]
【発明が解決しようとする課題】粗砕用、中砕用のジョ
ークラッシャーの破砕室の設定には前記のように破砕比
や供給される被砕物の最大幅サイズや、噛み角度、高さ
などより決定されるのが通常の手順である。しかし、実
際の採石現地におけるジョークラッシャーの稼働に対し
ては、これらの通常の手段だけで決定した破砕室の寸法
構成ではトラブルの発生が絶えないことも事実である。
その主たる原因は、破砕室入口における被砕物の閉塞、
言い換えれば原石のブリッジ現象が避けられないことに
よる。たとえば図３に示すように破砕室の入口に相当す
る被砕物の供給口へ原石が投入されたとき、被砕物Ｓが
最大供給寸法として計画された幅Ｗよりも小さい寸法で
あっても、原石の形状が偏平であれば、その長手方向の
寸法Ｌが破砕室の開き寸法Ｄを超えることはしばしば見
られるところである。特に一次破砕の場合には発破のた
めの穿孔の態様によって全体としてはほぼ長方形に近似
する原石が混入するケースが多く、原石の幅寸法を目標
通りのＷ（≦０．８Ｄ）と規制していても、発破後の長
手方向の最長寸法Ｌまで規制することは必ずしも容易で
はない。この場合には破砕室の入口で被砕物が両歯の頂
面間へ懸架して閉塞し、いわゆるブリッジとなる。しか
も問題はこのブリッジ状態となった原石自体だけでな
く、供給口を横断して係止する原石があるために供給口
として開口する面積が大きく閉ざされて、後から連続的
に投入される原石が標準寸法以下のサイズであっても残
る開口部が余りに狭隘なために破砕室内へ進入できなく
なり、供給口付近で堆積して以後の被砕物投入が不可能
な状態となることが頻発する。In the setting of the crushing chamber of the jaw crusher for coarse crushing and medium crushing, the crushing ratio, the maximum width size of the material to be crushed, the biting angle, the height, etc. are set as described above. It is the usual procedure that is determined more. However, with respect to the operation of the jaw crusher at the actual quarrying site, it is a fact that trouble does not occur continuously with the size configuration of the crushing chamber determined only by these usual means.
The main cause is the blockage of the crushed object at the entrance of the crushing chamber,
In other words, it is because the bridging phenomenon of the rough stone is unavoidable. For example, as shown in FIG. 3, when a rough stone is put into the supply port of the crushed object corresponding to the entrance of the crushing chamber, even if the crushed object S has a dimension smaller than the width W planned as the maximum supply dimension, the rough stone If the shape is flat, the dimension L in the longitudinal direction often exceeds the opening dimension D of the crushing chamber. In particular, in the case of primary crushing, there are many cases where rough stones that are approximately rectangular as a whole are mixed depending on the mode of perforation for blasting, and the width dimension of the rough stones is regulated to the target W (≦ 0.8D). However, it is not always easy to regulate up to the longest dimension L in the longitudinal direction after blasting. In this case, the object to be crushed is suspended between the top surfaces of both teeth at the entrance of the crushing chamber and closed, forming a so-called bridge. Moreover, the problem is not only the rough stone itself in this bridge state, but because there is a rough stone that locks across the supply port, the area that opens as the supply port is greatly closed and the rough stone that is continuously put in later. However, even if the size is smaller than the standard size, the remaining opening is too narrow to enter the crushing chamber, and it is often the case that the material accumulates in the vicinity of the supply port and it becomes impossible to input the crushed material thereafter.
【０００８】また、図４のように標準サイズ以下（Ｗ≦
０．８Ｄ）の被砕物Ｓが幾つか重なって供給口付近で相
互にひしめき合って押圧すると、被砕物相互の表面およ
び供給口の歯板と直角方向、すなわちチークプレートを
添付した側壁と引っ掛かって、見掛け上、ブリッジと同
様の状態となって続けて投入される被砕物の進入を阻害
し、供給口で堆積するので円滑な運転を阻害する原因と
なることも見られる。これも供給口の開口部が限られ、
一旦一部の空間に閉塞が始まると、後から投下される被
砕物の落下に伴う衝撃、振動が加わっても側壁（チーク
プレート面）と絡んだ相互の係止が容易に解除しないこ
とによるものと解釈される。Further, as shown in FIG. 4, the size is less than the standard size (W≤
0.8D) when several crushed objects S are overlapped and pressed against each other in the vicinity of the supply port, the surfaces of the crushed products and the tooth plate of the supply port are perpendicular to each other, that is, the cheek plate is caught on the side wall, Apparently, the state similar to that of the bridge impedes the intrusion of the crushed objects that are continuously input, and the accumulation at the supply port causes a hindrance to smooth operation. This also limits the opening of the supply port,
This is because once a part of the space begins to be blocked, the mutual lock entangled with the side wall (cheek plate surface) cannot be easily released even if the impact and vibration due to the fall of the crushed object dropped later are applied. Is interpreted as
【０００９】本発明は以上の課題を解決するために、特
に粗砕、中砕用のジョークラッシャーとして被砕物が供
給口で停留した場合でも、ブリッジとなった対象の原石
を取り除くために運転の停止を必要としない破砕室の構
成に特徴を具えたジョークラッシャーの提供を目的とす
る。In order to solve the above problems, the present invention operates as a jaw crusher for coarse crushing and medium crushing in order to remove the rough stone of the object which has become the bridge even when the object to be crushed stays at the supply port. It is an object of the present invention to provide a jaw crusher characterized by the structure of a crushing chamber that does not require stop.
【００１０】[0010]
【課題を解決するための手段】本発明に係る中粗砕用の
ジョークラッシャーは、固定歯とトッグルプレートを介
して駆動され揺動するスイングジョーに取付けた動歯と
を対置して断面Ｖ形の破砕室を形成し、該破砕室へ被砕
物を供給して破砕する基本形態ににおいて、断面Ｖ形の
破砕室１の上端部に相当し固定歯２と動歯３の上端面間
で形成する破砕室１の開き寸法が５００ｍｍ以上であ
り、かつ前記破砕室１の両側壁に具えられたチークプレ
ート４の面間で形成する破砕室１の幅寸法Ｂが、前記開
き寸法に対して少くとも１．８倍以上である供給口５を
具えたことによって前記の課題を解決した。A jaw crusher for medium crushing according to the present invention has a V-shaped cross section in which fixed teeth and moving teeth attached to a swing jaw driven and oscillated by a toggle plate are placed opposite to each other. In the basic mode in which the crushing chamber is formed and an object to be crushed is crushed by supplying the crushing chamber to the crushing chamber, the crushing chamber is formed between the upper ends of the fixed teeth 2 and the moving teeth 3 corresponding to the upper end of the crushing chamber 1 having a V-shaped cross section. The opening dimension of the crushing chamber 1 is 500 mm or more, and the width dimension B of the crushing chamber 1 formed between the surfaces of the cheek plates 4 provided on both side walls of the crushing chamber 1 is smaller than the opening dimension. The above-mentioned problems were solved by providing the supply port 5 which is 1.8 times or more.
【００１１】[0011]
【作用】従来の中粗砕用ジョークラッシャーについて、
破砕比と直接関係のある破砕室頂部に一致する供給口の
開き寸法（固定歯頂面と動歯頂面間の距離）Ｄについて
は関心も高く、また、例示したように改善を目指した幾
つかの従来技術も見出される。しかし、破砕室の両側壁
に具えられたチークプレートの面間と一致する供給口の
幅寸法Ｂについてはあまり関心が払われず、この要素に
着目した提案も皆無である。一般的にはたとえば「採石
ハンドブック」（昭和５１年４月発行 技報堂 ６６６
ページ）において、表１に示すような各呼び番号別のジ
ョークラッシャーの供給口寸法がその能力とともに掲示
されている程度であり、この概要の寸法が慣用的に標準
として踏襲され特に何の問題意識も提起されないまま現
在に至っている。[Function] Regarding the conventional medium crushing jaw crusher,
The opening size (distance between the fixed tooth top surface and the moving tooth top surface) D, which is directly related to the crushing ratio and coincides with the top of the crushing chamber, is of great interest, and as shown in the examples, some The related art is also found. However, little attention has been paid to the width dimension B of the supply port that coincides with the surface of the cheek plates provided on both side walls of the crushing chamber, and there is no proposal focusing on this element. In general, for example, "Quarry Handbook" (issued in April 1976, Gihodo 666)
In the page), the size of the jaw crusher's supply port for each nominal number as shown in Table 1 is posted along with its capability. It has reached the present without being raised.
【００１２】[0012]
【表１】 [Table 1]
【００１３】表１において、慣用的に実施されている中
粗砕用ジョークラッシャーの従来技術における供給口の
開きＤに対する幅寸法Ｂの比率を計算すると供給口の開
き寸法Ｄが５００ｍｍ未満、すなわち小型のジョークラ
ッシャーにおいては、例外的にこの比率が１．８を超え
る値も見受けられるが、供給口の開き寸法Ｄが５００ｍ
ｍ以上すなわち中型や大型のジョークラッシャーではそ
の比率は１．１４〜１．６９で、平均すると１．３６倍
程度の割合となっている。この供給口の幅寸法と開きの
比率関係が図３、または図４の現象を巻起こし、運転停
止のトラブルに発展する大きな原因の一つとなってい
る。本発明に係るジョークラッシャーは当該比率を少な
くとも１．８以上に設定したので、図３のような偏平な
原石が供給口を横断して懸架し停留しても、幅寸法が十
分に大きく取られているので開口する範囲がなお広く残
され、この開口した空間を通過して後続の被砕物が破砕
室内へ進行するのに何の障害ともならず、運転は停止す
ることなく継続する。しかも係止した偏平な被砕物へ
は、絶えず被砕物が続けて投入され衝突しながら破砕室
内へ落下するので、絶え間ない衝撃のため遂には供給口
から離脱して長手方向を進行方向として破砕室内へ進入
し破砕作用を受けるに至る確率が高い。また、そのまま
供給口に停留したとしても運転は停止する必要がなく、
当日の作業の区切りのついた時点、たとえば当日の終業
後に保安要員などの手によって取り除けばよく、いずれ
にしても運転中の中断という最悪の状態を招く機会は従
来に比べると激減する。In Table 1, when the ratio of the width dimension B to the opening D of the supply port in the conventional technique of the conventional medium crushing jaw crusher is calculated, the opening size D of the supply port is less than 500 mm, that is, small size. In the jaw crusher, the ratio of which the ratio exceeds 1.8 is exceptionally seen, but the opening size D of the supply port is 500 m.
In the case of a m or larger jaw crusher, that is, the ratio is 1.14 to 1.69, which is about 1.36 times on average. The relationship between the width of the supply port and the opening ratio causes one of the phenomena shown in FIG. 3 or FIG. 4 and is one of the major causes of the trouble of operation stop. Since the jaw crusher according to the present invention has set the ratio to at least 1.8 or more, the width dimension is sufficiently large even if a flat rough as shown in FIG. 3 is suspended and suspended across the supply port. Therefore, the opening range is still wide, and there is no obstacle to the subsequent crushed object passing through this open space into the crushing chamber, and the operation is continued without stopping. Moreover, the flat object to be crushed is constantly thrown into the crushing chamber as it is continuously thrown in and colliding with it, so it is finally released from the supply port due to the constant impact and the longitudinal direction is the traveling direction. There is a high probability that it will go into and be crushed. In addition, even if it stays at the supply port as it is, it is not necessary to stop the operation,
It may be removed at the time when work on the day is divided, for example, after the work day is finished, by a security staff or the like. In any case, the chance of causing the worst state of interruption during driving is drastically reduced compared to the conventional case.
【００１４】また、偏平な原石が原因でなく図４のよう
に標準寸法以下の複数の被砕物が相互にひしめいた団塊
となったために起こるブリッジについては、供給口の幅
が広く設定されているから歯板と直角方向の辺（チーク
プレート側）同士の対向する距離が長いため、被砕物同
士が団塊となっても供給口の側壁までの距離が遠過ぎて
届かず、側壁へ絡んで係止する機会が少なくブリッジと
はなり難い。また、被砕物同士だけの係止が一旦生じた
ところで後続して投入される次の被砕物の落下の衝撃が
あれば、拠り所となる内壁とは縁が切れた中空状態での
団塊に過ぎないから、少しのショックで容易に崩れて同
様に落下していくのでブリッジが形成され難く、また一
旦団塊となっても簡単に分解して離脱する。Further, the width of the supply port is set wide for the bridge caused by the flat rough stone not being the cause but being a nodule in which a plurality of crushed objects having a standard size or less are crowded with each other as shown in FIG. Since the distance between the teeth and the side perpendicular to the tooth plate (the cheek plate side) is long, the distance to the side wall of the supply port is too long to reach even if the crushed objects become nodules, and it entangles with the side wall. There are few opportunities to stop and it is hard to become a bridge. Also, if the impact of the falling of the next crushed object that is thrown in after the locking of only the crushed objects occurs once, it is only a nodule in a hollow state with the edge cut off from the inner wall that is the base. Therefore, it is easy to collapse and fall in the same way with a little shock, so it is difficult to form a bridge, and once it becomes a nodule, it easily disassembles and separates.
【００１５】[0015]
【実施例】図１は本発明実施例の平面図（Ａ）と正面図
（Ｂ）、図２は同実施例の斜視図である。各図において
図示しないモータの駆動をプーリ６で受け、偏心軸７を
介してスイングジョー８が偏心運動を行なう。スイング
ジョー８には動歯３が取付けられ、フレーム１２に取付
けた固定歯２と対向し、直角方向の両辺をチークプレー
ト４で区切られた断面Ｖ形の破砕室１を形成し、その上
面の開口部が被砕物（原石）の供給口５となる。動歯３
の揺動はトッグルプレート９の係止とスプリング１１の
付勢力によって繰り返され、破砕室１は底端に出口隙間
ｄを形成し、断面Ｖ形の破砕室１の内部へ投入された被
砕物Ｓを両歯間で挾圧して噛み砕く。FIG. 1 is a plan view (A) and a front view (B) of an embodiment of the present invention, and FIG. 2 is a perspective view of the same embodiment. The pulley 6 receives the drive of a motor (not shown) in each figure, and the swing jaw 8 makes an eccentric motion via the eccentric shaft 7. A moving tooth 3 is attached to the swing jaw 8, faces the fixed tooth 2 attached to the frame 12, and forms a crushing chamber 1 having a V-shaped cross section divided by cheek plates 4 on both sides in a right angle direction. The opening serves as a supply port 5 for the object to be crushed (raw stone). Moving tooth 3
Rocking is repeated by the engagement of the toggle plate 9 and the urging force of the spring 11, the crushing chamber 1 forms an outlet gap d at the bottom end thereof, and the crushed object S introduced into the crushing chamber 1 having a V-shaped cross section. Crush between the teeth by crushing.
【００１６】本実施例の一例を示すと幅寸法Ｂは破砕室
の開き寸法Ｄの２．５倍に設定している。この状態で運
転されると、図２のように偏平な被砕物Ｓの長手方向
（長さ寸法Ｌ）が供給口５の開き方向に懸架して開口面
積の一部を閉塞しても、残る開口部が余裕をもって十分
に確保されているから、残された部分を通過して後続の
被砕物が進行し、この後続の被砕物が落下するときの衝
撃で係止している偏平な被砕物も離脱して斜めに滑り落
ちる作用を誘発する。結局被砕物の連続供給の相乗作用
が働いて供給口における閉塞現象はきわめて稀となるま
で改善される。As an example of this embodiment, the width dimension B is set to 2.5 times the opening dimension D of the crushing chamber. When operated in this state, even if the flat object S to be crushed in the longitudinal direction (length L) is suspended in the opening direction of the supply port 5 to close a part of the opening area as shown in FIG. Since the opening is sufficiently secured with a margin, the subsequent crushed object passes through the remaining part, and the flat crushed object locked by the impact when the following crushed object falls. It also separates and induces the action of sliding down diagonally. Eventually, the synergistic action of continuous supply of the crushed material works to improve the obstruction phenomenon at the supply port until it becomes extremely rare.
【００１７】この実施例で算出してみると、標準通りに
被砕物の最大幅Ｗは供給口の開き寸法Ｄに対して０．８
Ｄ以下に抑制されているから、図２のように偏平な長手
方向（長さ寸法Ｌ）が供給口の開き方向に係止したとし
ても、供給口５の幅方向については２．５Ｄ−０．８Ｄ
＝１．７Ｄの余裕が残され、０．８Ｄを最大幅Ｗとする
通常の塊状の被砕物であれば容易に通り抜けて破砕室内
へ進入するのに何の障害にもならない。比較のために従
来技術の幅寸法で同じ算定を試みると、平均１．３６Ｄ
−０．８Ｄ＝０．５６Ｄであるから、供給口で遊動しつ
つ懸架する偏平な被砕物が一方の側壁近くへ偏ったとし
ても、通常の規制である最大幅Ｗが０．８Ｄの塊状の被
砕物は残された空間幅０．５６Ｄを通過できないという
大きな差が現れる。When calculated in this embodiment, the maximum width W of the crushed object is 0.8 with respect to the opening size D of the supply port as standard.
Since it is suppressed to D or less, even if the flat longitudinal direction (length dimension L) is locked in the opening direction of the supply port as shown in FIG. 2, the width direction of the supply port 5 is 2.5D-0. .8D
A margin of = 1.7D is left, and a normal lumpy object having a maximum width W of 0.8D can easily pass through and enter the crushing chamber without any obstacle. If the same calculation is attempted with the width dimension of the prior art for comparison, the average is 1.36D.
Since −0.8D = 0.56D, even if a flat crushed object suspended while floating at the supply port is biased near one of the side walls, a lump-like block having a maximum width W of 0.8D, which is a normal regulation, is formed. A big difference appears that the crushed object cannot pass through the remaining space width of 0.56D.
【００１８】この実施例で例示したように本発明に係る
ジョークラッシャーの供給口の全幅寸法Ｂは、被砕物の
最大幅（Ｗ≦０．８Ｄ）が長手方向で懸架しても、残さ
れた開口の幅が１．０Ｄ以上確保できるように（１．０
＋０．８）Ｄ＝１．８Ｄ以上を必須要件として設定した
から、係止した被砕物が遊動して一方へ押しやられると
縦横の開口寸法がＤ以上の正方形または長方形を常に維
持できるので、本来の塊状被砕物（Ｗ≦０．８Ｄ）が通
過するのに特に妨げとなることはなくなった。As illustrated in this embodiment, the full width dimension B of the supply port of the jaw crusher according to the present invention remains even if the maximum width (W≤0.8D) of the crushed object is suspended in the longitudinal direction. Make sure that the opening width is 1.0D or more (1.0
Since +0.8) D = 1.8D or more is set as an essential requirement, a square or rectangle with a vertical and horizontal opening size of D or more can always be maintained when the locked crushed object floats and is pushed to one side. No particular hindrance to the passage of the lumpy objects (W ≦ 0.8D).
【００１９】[0019]
【発明の効果】本発明に係るジョークラッシャーは特に
中粗砕用に限定した一次または二次破砕用の装置に最適
であり、原岩石層の発破方向、穿孔間隔などの関係で避
けることのできない偏平な被砕物が混在した場合でも、
供給口に係止して後続する被砕物がその上に堆積し、こ
れを取り除かなければ運転が継続できないという従来技
術の課題を解決した。その結果、当該工程の運転停止の
機会が激減し、破砕プラント全体の生産性の向上に目立
った貢献を果たすという効果が現れる。作業中のトラブ
ル防止だけではなく、供給口の受入れる幅の増加は被砕
物の処理量が当然増強されるから、駆動力の増強と装置
の機械的強度さえ伴えば生産能力が大きく増大すことは
言うまでもない。INDUSTRIAL APPLICABILITY The jaw crusher according to the present invention is most suitable for an apparatus for primary or secondary crushing, which is limited to medium crushing, and is unavoidable due to the blasting direction of the raw rock layer, the perforation interval, etc. Even when flat crushed objects are mixed,
The object of the prior art in which the object to be crushed following the accumulation at the supply port is accumulated thereon and the operation cannot be continued unless the object is removed has been solved. As a result, the chances of stopping the operation of the process are drastically reduced, and the effect of making a remarkable contribution to the improvement of the productivity of the entire crushing plant appears. Not only the prevention of troubles during work, but the increase in the width of acceptance of the supply port naturally increases the throughput of the crushed material, so if the driving force is increased and the mechanical strength of the device is increased, the production capacity will not increase significantly. Needless to say.
【図１】本発明実施例の平面図（Ａ）と正面図（Ｂ）で
ある。FIG. 1 is a plan view (A) and a front view (B) of an embodiment of the present invention.
【図２】同例の斜視図である。FIG. 2 is a perspective view of the same example.
【図３】従来技術における課題を示す斜視図である。FIG. 3 is a perspective view showing a problem in the conventional technique.
【図４】従来技術の課題の別の態様を示す斜視図であ
る。FIG. 4 is a perspective view showing another aspect of the problem of the conventional technique.
１ 破砕室 ２ 固定歯 ３ 動歯 ４ チークプレート ５ 供給口 ６ プーリ ７ 偏心軸 ８ スイングジョー ９ トッグルプレート 11 スプリング 12 フレーム Ｄ 破砕室の開き寸法 Ｂ 破砕室の幅寸法 Ｓ 被砕物（原石） Ｗ 被砕物の最大幅寸法 Ｌ 被砕物の長手方向の長さ寸法 ｄ 破砕室の出口隙間 1 Crushing chamber 2 Fixed teeth 3 Moving teeth 4 Cheek plate 5 Supply port 6 Pulley 7 Eccentric shaft 8 Swing jaw 9 Toggle plate 11 Spring 12 Frame D Crushing chamber width B B Crushing chamber width S Crushed object (raw stone) W Cover Maximum width dimension of crushed material L Length dimension of crushed material in the longitudinal direction d Exit gap of crushing chamber
Claims (1)
され揺動するスイングジョーに取付けた動歯とを対置し
て断面Ｖ形の破砕室を形成し、該破砕室へ被砕物を供給
して破砕するジョークラッシャーにおいて、断面Ｖ形の
破砕室１の上端部に相当し固定歯２と動歯３の上端面間
で形成する破砕室１の開き寸法が５００ｍｍ以上であ
り、かつ前記破砕室１の両側壁に具えられたチークプレ
ート４の面間で形成する破砕室１の幅寸法Ｂが、前記開
き寸法に対して少くとも１．８倍以上である供給口５を
具えたことを特徴とする中粗砕用ジョークラッシャー。1. A crushing chamber having a V-shaped cross section is formed by placing fixed teeth and a moving tooth attached to a swinging jaw that is driven and oscillated via a toggle plate to form a crushing chamber, and an object to be crushed is supplied to the crushing chamber. In the jaw crusher for crushing, the opening dimension of the crushing chamber 1 corresponding to the upper end of the crushing chamber 1 having a V-shaped cross section and formed between the upper end surfaces of the fixed teeth 2 and the moving teeth 3 is 500 mm or more, and the crushing chamber 1 The width dimension B of the crushing chamber 1 formed between the surfaces of the cheek plates 4 provided on both side walls of the is provided with a supply port 5 which is at least 1.8 times or more the opening dimension. Jaw crusher for medium coarse crushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28875994A JP2888151B2 (en) | 1994-10-28 | 1994-10-28 | Jaw crusher for medium crushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28875994A JP2888151B2 (en) | 1994-10-28 | 1994-10-28 | Jaw crusher for medium crushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08126847A true JPH08126847A (en) | 1996-05-21 |
| JP2888151B2 JP2888151B2 (en) | 1999-05-10 |
Family
ID=17734345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28875994A Expired - Lifetime JP2888151B2 (en) | 1994-10-28 | 1994-10-28 | Jaw crusher for medium crushing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2888151B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898886A (en) * | 2020-01-16 | 2020-03-24 | 义乌奥莉机械科技有限公司 | Jaw stone crusher capable of preventing blockage |
-
1994
- 1994-10-28 JP JP28875994A patent/JP2888151B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898886A (en) * | 2020-01-16 | 2020-03-24 | 义乌奥莉机械科技有限公司 | Jaw stone crusher capable of preventing blockage |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2888151B2 (en) | 1999-05-10 |
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