JP6423825B2 - Sieve structure - Google Patents

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JP6423825B2
JP6423825B2 JP2016135513A JP2016135513A JP6423825B2 JP 6423825 B2 JP6423825 B2 JP 6423825B2 JP 2016135513 A JP2016135513 A JP 2016135513A JP 2016135513 A JP2016135513 A JP 2016135513A JP 6423825 B2 JP6423825 B2 JP 6423825B2
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sieve
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勝盛 伊藤
勝盛 伊藤
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ITO SHOKAI KK
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本発明は、ふるいバケットに設けられるふるいを揺動させるふるい構造の改良に関するものである。   The present invention relates to an improvement of a sieve structure that swings a sieve provided in a sieve bucket.

ふるいバケット（スケルトンバケット）は、従来、例えば、特開平９−７８６２４号のふるい機能付バケットでは、土木機械の作動腕先端に取付け、振動機構を装備したバケット主体に、掬い取ったコンクリート廃材、土砂、礫等をふるい分けするふるい網を設け、前記振動機構をふるい網に連係させた構成が知られている。
また、特開２００５−１６２３０号（特許第３９６４８３１号）の油圧ショベル機用バケットでは、バケット底板のほぼ全体に形成された開口を覆い、かつ開口中央部にて揺動可能に支持され、所望の大きさからなる多数の空隙部が形成された篩部材と、該篩部材の一端部に設けられた軸支部に対し、偏心部材を介して連結される回転駆動部材とを備え、回転駆動部材により回転する偏心部材により篩部材を、その偏心量に応じた角度で往復揺動してバケット内の収集物を振動させて上記空隙部以下の大きさの収集物を篩い落とし可能にする構成が知られている。
前者の篩い構造では３つに区分してあるふるい網を、偏心輪の回転で、左右のふるい網が一対の揺動連結片を介して揺動されるが、個々のふるい網は同一の面として同じ動きをするので、篩いに時間がかかり効果的ではない。
後者の篩い構造でも、ふるい体は、揺動時に面として同一の動きをするので、同じ欠点がある。 Conventionally, a sieve bucket (skeleton bucket) is, for example, a bucket with a sieve function disclosed in Japanese Patent Application Laid-Open No. 9-78624. There is known a configuration in which a sieve net for sieving gravel and the like is provided and the vibration mechanism is linked to the sieve net.
Further, in the bucket for a hydraulic excavator disclosed in Japanese Patent Application Laid-Open No. 2005-16230 (Patent No. 3964831), an opening formed in almost the entire bucket bottom plate is covered and supported swingably at the center of the opening. A sieving member in which a large number of gaps having a size are formed, and a rotation driving member connected to a shaft support provided at one end of the sieving member via an eccentric member; A configuration is known in which the sieve member is reciprocally swung by an angle corresponding to the amount of eccentricity by the rotating eccentric member to vibrate the collected material in the bucket so that the collected material having a size smaller than the gap can be sieved. It has been.
In the former sieving structure, the sieve screen divided into three parts is swung by the rotation of the eccentric ring, and the left and right sieve meshes are swung through a pair of swinging connection pieces. As the same movement, it takes time to sieve and is not effective.
Even in the latter sieving structure, the sieving body has the same disadvantages because it moves in the same manner as a surface when swinging.

特開平９−７８６２４号公報JP-A-9-78624 特開２００５−１６２３０号公報JP 2005-16230 A

この発明は上記事情に鑑みて創案されたものであって、バケット底面に設けられたふるい構造が、バケット開口側からバケット奥側に延び、バケット横幅方向に並列される多数の縦枠部と、各縦枠部に一体に形成されて横方向に延びる横枠片とからなっており、隣接する縦枠部を上下方向に交互に逆に揺動して振動させることを特徴とするふるいバケットを提供することにある。   The present invention was devised in view of the above circumstances, the sieve structure provided on the bottom surface of the bucket extends from the bucket opening side to the bucket back side, and a large number of vertical frame portions arranged in parallel in the bucket lateral width direction; A sieve bucket that is formed integrally with each vertical frame portion and extends in the horizontal direction, and vibrates by swinging the adjacent vertical frame portions alternately in the vertical direction. It is to provide.

上記課題を達成するために請求項１の発明では、
ふるいバケットの底面に設けられたふるい構造が、バケット開口側からバケット奥側に延び、バケット横幅方向に並列される多数の縦枠部と、各縦枠部の左右側面に一体に形成されて略直角に交差して横方向に延びる横枠片とからなり、
隣接する一方の第１縦枠部が有する第１横枠片と、隣接する他方の第２縦枠部が有する第２横枠片とは、前記第１縦枠部および第２縦枠部の長手方向に沿って整合することなく相互にずれて配置されることでふるいの目となっており、
前記第１縦枠部と第２縦枠部との基端部はバケットの開口側で同一軸線上に枢着される枢着部が設けられており、
前記第１縦枠部と第２縦枠部の先端部は、上下動が逆になるように同期して枢動させる上下動駆動部に連結された状態となっていることを特徴とする。
請求項２の発明では、
前記多数の第１縦枠部の先端部を連結する第１連結軸と、多数の第２縦枠部の先端部を連結する第２連結軸がそれぞれ設けられており、
上下動駆動部が、中央を支点として両端が上下に反転動するレバー部材を有しており、
該レバー部材の一方端側に第１連結軸が枢着され、他方に第２連結軸が枢着されていることを特徴とする。 In order to achieve the above object, in the invention of claim 1,
The sieve structure provided on the bottom surface of the sieve bucket extends from the bucket opening side to the bucket back side, and is formed integrally with a number of vertical frame portions arranged in parallel in the bucket width direction and on the left and right side surfaces of each vertical frame portion. It consists of horizontal frame pieces that intersect at right angles and extend in the horizontal direction,
The first horizontal frame piece of one adjacent first vertical frame part and the second horizontal frame piece of the other adjacent second vertical frame part are the first vertical frame part and the second vertical frame part. It has become a sieve eye by being displaced from each other without alignment along the longitudinal direction,
The base end portion of the first vertical frame portion and the second vertical frame portion is provided with a pivoting portion pivotally mounted on the same axis on the opening side of the bucket,
The front ends of the first vertical frame portion and the second vertical frame portion are connected to a vertical movement drive unit that pivots synchronously so that the vertical movement is reversed.
In the invention of claim 2,
A first connecting shaft for connecting the leading ends of the multiple first vertical frame portions and a second connecting shaft for connecting the leading ends of the multiple second vertical frame portions are provided, respectively.
The vertical movement drive unit has a lever member whose both ends move up and down with the center as a fulcrum,
A first connecting shaft is pivotally attached to one end of the lever member, and a second connecting shaft is pivotally attached to the other end.

隣接する第１縦枠部と第２縦枠部とは同期して相互に上下逆方向に枢動し、同時に各縦枠部に一体に設けられた横枠片も連動して上下逆方向に変位するので、ふるい面自体が各縦枠部ごとに上下に変位することで、バケット内に掬い取られたふるい分け対象物に細かいピッチで上下逆方向の振動を与えることができ、効率的にふるい分け作業をすることができる。   The adjacent first vertical frame portion and second vertical frame portion are synchronously pivoted upside down, and at the same time, the horizontal frame piece integrally provided in each vertical frame portion is also linked in the upside down direction. Since the screen is displaced, the screen surface itself is displaced up and down for each vertical frame, so that the object to be screened in the bucket can be vibrated in the reverse direction at a fine pitch and efficiently screened. Can work.

ふるい構造の一部を示す平面図である。It is a top view which shows a part of sieve structure. ふるいバケットの斜視図である。It is a perspective view of a sieve bucket. 隣接する一方の第１縦枠部を示す側面図を示す側面図である。It is a side view which shows the side view which shows one adjacent 1st vertical frame part. 隣接する他方の第２縦枠部を示す側面図である。It is a side view which shows the other 2nd vertical frame part adjacent. 第１縦枠部と第２縦枠部との上下動の作動構造を示す上部側面図である。It is an upper side view which shows the action structure of the vertical motion of a 1st vertical frame part and a 2nd vertical frame part. 図４（ａ）の第１縦枠部と第２縦枠部の変位を示す側面図である。It is a side view which shows the displacement of the 1st vertical frame part of Fig.4 (a), and a 2nd vertical frame part. 図４（ａ）の横枠片のずれを説明する側面図である。It is a side view explaining the shift | offset | difference of the horizontal frame piece of Fig.4 (a). 第１縦枠部と第２縦枠部との図４とは逆の上下動の作動構造を示す上部側面図である。FIG. 5 is an upper side view showing an up-and-down moving operation structure of the first vertical frame portion and the second vertical frame portion opposite to FIG. 4. 図５（ａ）の第１縦枠部と第２縦枠部の変位を示す側面図である。It is a side view which shows the displacement of the 1st vertical frame part of Fig.5 (a), and a 2nd vertical frame part. 図５（ａ）の横枠片のずれを説明する側面図である。It is a side view explaining the shift | offset | difference of the horizontal frame piece of Fig.5 (a).

バケットの底面のふるい構造を、バケットの横幅方向に隣接する一方の第１縦枠部と他方の第２縦枠部を相対的に上下逆方向に枢動することで、バケット内のふるい分け対象物質に細かい振動を与えることができ、効率的なふるい分けを実現した。
以下に、この発明の好適実施例について図面を参照しながら説明する。 The sieve structure on the bottom surface of the bucket is a substance to be screened in the bucket by pivoting one first vertical frame portion and the other second vertical frame portion adjacent to each other in the width direction of the bucket relatively in the upside down direction. It was possible to give fine vibrations to the screen and realized efficient sieving.
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

図１はふるい構造１の基端部側の取付状態を示す平面図、図２は底面がふるいに形成された振動式のふるいバケットＢの斜視図を示している。
上記ふるい構造１は、縦枠部と該縦枠部に固設された横枠片とからなって、ふるいの目を多数形成している。 FIG. 1 is a plan view showing a state of attachment on the base end side of the sieve structure 1, and FIG. 2 is a perspective view of a vibrating sieve bucket B having a bottom surface formed as a sieve.
The sieve structure 1 includes a vertical frame portion and a horizontal frame piece fixed to the vertical frame portion, and forms a large number of sieve eyes.

縦枠部は、バケット開口側からバケット奥側に沿って略円弧状に延びると共に、断面が略矩形のプレート状からなり、バケット横幅方向に並列される多数の縦枠部であって、隣接する一方の第１縦枠部１１と、隣接する他方の第２縦枠部１２との一対をセットとして並んでいる。   The vertical frame portion is a large number of vertical frame portions that extend in a substantially arc shape from the bucket opening side to the back side of the bucket and have a substantially rectangular plate shape, and are arranged in parallel in the lateral width direction of the bucket. A pair of one first vertical frame portion 11 and the other adjacent second vertical frame portion 12 are arranged as a set.

そして、第１縦枠部１１には、その左右両側面から外方に一体に突設されて、長手方向に沿って一定の間隔で配置された多数の第１横枠片２１と、第２縦枠部１２の左右両側面から外方に一体に突設されて、長手方向に沿って一定の間隔で配置された多数の第２横枠片２２とからなっている。   The first vertical frame portion 11 has a large number of first horizontal frame pieces 21 that are integrally protruded outward from both left and right side surfaces and arranged at regular intervals along the longitudinal direction. It consists of a number of second horizontal frame pieces 22 that protrude integrally outward from the left and right side surfaces of the vertical frame portion 12 and are arranged at regular intervals along the longitudinal direction.

前記第１横枠片２１と第２横枠片２２とは、左右方向に整合することなく、第１縦枠部１１と第２縦枠部１２の長手方向に沿って相互にずれて配置され、全体として一定間隔となって、第１縦枠部１１と第２縦枠部１２とによって、ふるいの目Ｅを構成している。   The first horizontal frame piece 21 and the second horizontal frame piece 22 are displaced from each other along the longitudinal direction of the first vertical frame part 11 and the second vertical frame part 12 without being aligned in the left-right direction. The first vertical frame portion 11 and the second vertical frame portion 12 form a sieve eye E at a constant interval as a whole.

従って、第１縦枠部１１の第１横枠片２１の先端部は、横幅方向において、第２縦枠部１２の側面と接することなく僅かな隙間を隔てており、第２縦枠部１２の第２横枠片２２の先端部は、横幅方向において、第１縦枠部１１の側面と接することなく僅かな隙間を隔てて配置されている。
上記隙間は、ふるい分け対象物が落下しない僅かな寸法に設定されている。 Therefore, the front end portion of the first horizontal frame piece 21 of the first vertical frame portion 11 is separated from the side surface of the second vertical frame portion 12 in the horizontal width direction with a slight gap therebetween, and the second vertical frame portion 12. The front end portion of the second horizontal frame piece 22 is arranged with a slight gap in the horizontal width direction without contacting the side surface of the first vertical frame portion 11.
The gap is set to a small dimension that prevents the object to be screened from dropping.

ここで、バケットＢの側板に最も接する第１縦枠部１１または第２縦枠部１２の側板に接する側の側面には、それぞれの第１横枠片２１または第２横枠片２２に加えて、隣接する縦枠部に形成された第２横枠片２２または第１横枠片２１と整合する横幅方向に補助横枠片２３、２４が形成されて、バケットＢの側板Ｓとの間でふるいの目を形成するようにしている（図１参照）。   Here, in addition to the first horizontal frame piece 21 or the second horizontal frame piece 22, the side surface of the first vertical frame portion 11 or the second vertical frame portion 12 that is closest to the side plate of the bucket B is in contact with the side plate. The auxiliary horizontal frame pieces 23 and 24 are formed in the horizontal width direction aligned with the second horizontal frame pieces 22 or the first horizontal frame pieces 21 formed in the adjacent vertical frame portions, and between the side plates S of the bucket B. Thus, a sieve eye is formed (see FIG. 1).

前記第１縦枠部１１と第２縦枠部１２の基端部１３は、バケットＢの開口側で、同一軸線上に枢着される枢着部５に取り付けられる。
本実施例では、バケットＢの開口側には、第１縦枠部１１と第２縦枠部１２の基端部１３、１４を挿入する凹部２と、該凹部２の両側に配置されて枢軸を軸受する軸受部３とからなる枢着部５が固定されている。 The base end portion 13 of the first vertical frame portion 11 and the second vertical frame portion 12 is attached to the pivoting portion 5 pivoted on the same axis on the opening side of the bucket B.
In this embodiment, on the opening side of the bucket B, the concave portion 2 into which the base end portions 13 and 14 of the first vertical frame portion 11 and the second vertical frame portion 12 are inserted, and the pivots are arranged on both sides of the concave portion 2. A pivot part 5 comprising a bearing part 3 for bearing is fixed.

そこで、バケットＢに装着する全ての第１縦枠部１１と第２縦枠部１２の基端部１３、１４をそれぞれ凹部２に挿入して、横幅方向に等間隔に位置決めする。
第１縦枠部１１と第２縦枠部１２の基端部１３、１４には枢軸を通す孔が穿設されており、該孔は軸受部３の孔と整合するようになっている。
次いで１本の枢軸４を、軸受部３と基端部１３、１４の孔に挿通させることで、第１縦枠部１１と第２縦枠部１２とは、同一の枢軸線上で枢動自在に枢着される。 Therefore, the base end portions 13 and 14 of all the first vertical frame portions 11 and the second vertical frame portions 12 to be mounted on the bucket B are inserted into the recesses 2 and positioned at equal intervals in the horizontal width direction.
The base end portions 13 and 14 of the first vertical frame portion 11 and the second vertical frame portion 12 are formed with holes through which the pivots pass, and the holes are aligned with the holes of the bearing portion 3.
Next, the first vertical frame portion 11 and the second vertical frame portion 12 are pivotable on the same pivot line by inserting one pivot shaft 4 through the holes of the bearing portion 3 and the base end portions 13 and 14. It is pivotally attached to.

本実施例では、１本の枢軸４によって、バケットＢに装着する全ての第１縦枠部１１と第２縦枠部１２とを枢着したが、枢軸は１または複数の縦枠部を個別に枢着するものでもよく、要するに、この発明では、同一枢軸線上に枢着されていればよい。   In the present embodiment, all the first vertical frame portions 11 and the second vertical frame portions 12 to be attached to the bucket B are pivotally attached by one pivot 4, but the pivot has one or more vertical frame portions individually. In short, in the present invention, it is only necessary to be pivotally mounted on the same axis.

前記第１縦枠部１１と第２縦枠部１２の先端部１５、１６は、図３（ａ）（ｂ）に示すように、基端部１３，１４から先端部１５，１６の手前までは略同一形状からなっており、先端部１５、１６が前記基端部１３，１４を同一位置とした場合に前後にずれるように形成されている。
本実施例では、第１縦枠部１１の先端部１５がバケット後方まで延びており、第２縦枠部１２の先端部１６は第１縦枠部１１の先端部１５と重ならない前方となるように折れ曲がっている。 The distal end portions 15 and 16 of the first vertical frame portion 11 and the second vertical frame portion 12 extend from the base end portions 13 and 14 to the front of the distal end portions 15 and 16 as shown in FIGS. Have substantially the same shape, and the tip portions 15 and 16 are formed so as to be displaced forward and backward when the base end portions 13 and 14 are in the same position.
In the present embodiment, the tip 15 of the first vertical frame 11 extends to the rear of the bucket, and the tip 16 of the second vertical frame 12 is the front not overlapping the tip 15 of the first vertical frame 11. It is bent like so.

そして、先端部１５、１６には、各第１縦枠部１１と第２縦枠部１２とを枢動させる上下動駆動部３０と連結するための連結部が形成されている。
上下動駆動部３０は、本実施例の場合、前後に延びるレバー部材３１と、該レバー部材３１の中央に設けられた回転中心部３２と、該回転中心部３２を正逆回転させる駆動モータ３３とからなっている。 And the front-end | tip parts 15 and 16 are formed with the connection part for connecting with the up-and-down movement drive part 30 which pivots each 1st vertical frame part 11 and the 2nd vertical frame part 12. As shown in FIG.
In the case of this embodiment, the vertical drive unit 30 includes a lever member 31 extending in the front-rear direction, a rotation center portion 32 provided at the center of the lever member 31, and a drive motor 33 that rotates the rotation center portion 32 forward and backward. It is made up of.

そして、第１縦枠部１１の先端部１５には孔が穿設されており、バケットＢの全ての第１縦枠部１１の先端部１５の孔に１本の第１連結軸３５が挿入され連動可能となる。
同様に、第２縦枠部１２の先端部１６にも孔が穿設されており、バケットＢの全ての第２縦枠部１２の先端部１６の孔に１本の第２連結軸３６が挿入され連動可能となる。 And the hole is drilled in the front-end | tip part 15 of the 1st vertical frame part 11, and the 1st 1st connection shaft 35 is inserted in the hole of the front-end | tip part 15 of all the 1st vertical frame parts 11 of the bucket B. Can be linked.
Similarly, a hole is also formed in the distal end portion 16 of the second vertical frame portion 12, and one second connecting shaft 36 is provided in the holes of the distal end portions 16 of all the second vertical frame portions 12 of the bucket B. It can be inserted and linked.

上記第１連結軸３５と第２連結軸３６には、縦枠部と重ならない個所でそれぞれの中途位置に第１ブラケット３７、第２ブラケット３８が固定されている。
そして、前記上下動駆動部３０のレバー部材３１の後端側には、リンク部材Ｌ１を介して第１ブラケット３７が枢着されており、該第１ブラケット３７を介して全ての第１縦枠部１１が同期して枢着しうるようになっている。 A first bracket 37 and a second bracket 38 are fixed to the first connecting shaft 35 and the second connecting shaft 36 at positions that do not overlap with the vertical frame portion, respectively.
A first bracket 37 is pivotally attached to the rear end side of the lever member 31 of the vertical movement drive unit 30 via a link member L1, and all the first vertical frames are connected via the first bracket 37. The parts 11 can be pivoted synchronously.

同様に、前記上下動駆動部３０のレバー部材３１の前端側には、リンク部材Ｌ２を介して第２ブラケット３８が枢着されており、該第２ブラケット３８を介して全ての第２縦枠部１２が同期して枢着しうるようになっている。   Similarly, a second bracket 38 is pivotally attached to the front end side of the lever member 31 of the vertical movement drive unit 30 via a link member L2, and all the second vertical frames are connected via the second bracket 38. The parts 12 can be pivoted synchronously.

前記上下動駆動部３０は、一定の角度で正回転と逆回転を交互に行うように制御されている。
従って、図４（ａ）、（ｂ）に示すように、レバー部材３１の前方が上へ、後方が下へ動く場合には、第２縦枠部１２の先端部１６が上昇して第２縦枠部１２を上向きに枢動し、同時に、第１縦枠部１１の先端部１５が下降して第１縦枠部１１を下向きに枢動させる。 The vertical movement drive unit 30 is controlled to alternately perform forward rotation and reverse rotation at a constant angle.
Therefore, as shown in FIGS. 4A and 4B, when the front of the lever member 31 moves upward and the rear moves downward, the tip 16 of the second vertical frame portion 12 rises to the second position. The vertical frame portion 12 is pivoted upward, and at the same time, the front end portion 15 of the first vertical frame portion 11 is lowered to pivot the first vertical frame portion 11 downward.

同様に、図５（ａ）（ｂ）に示すように、レバー部材３１の前方が下へ、後方が上へ動く場合には、第２縦枠部１２の先端部１６が下降して第２縦枠部１２を下向きに枢動し、同時に、第１縦枠部１１の先端部１５が上昇して第１縦枠部１１を上向きに枢動させる。   Similarly, as shown in FIGS. 5A and 5B, when the front of the lever member 31 moves downward and the rear moves upward, the distal end portion 16 of the second vertical frame portion 12 descends to the second position. The vertical frame portion 12 is pivoted downward, and at the same time, the tip portion 15 of the first vertical frame portion 11 is raised to pivot the first vertical frame portion 11 upward.

また、図４（ｃ）および図５（ｃ）に示すように、本実施例では、第１横枠片２１と第２横枠片２２の縦（上下方向の垂直）の長さｈａが、第１縦枠部１１と第２縦枠部１２の上下の枢動に際して、隣接する第１縦枠部１１または第２縦枠部１２の縦幅（上下方向の垂直な長さ）ｈｂを超えない長さに設定されていることが好ましい。
そこで、上下動駆動部３０の枢動による上下の最大変位量と、横枠片の縦の長さとは相対的に最適な数値に決定される。
これにより、第１縦枠部１１と第２縦枠部１２とが上下に枢動しても、ふるいの目が開放されることがないので、正確にふるい作業を行うことができる。 In addition, as shown in FIGS. 4C and 5C, in this embodiment, the length ( vertical in the vertical direction) length ha of the first horizontal frame piece 21 and the second horizontal frame piece 22 is When the first vertical frame portion 11 and the second vertical frame portion 12 are pivoted up and down, the vertical width ( vertical length in the vertical direction) hb of the adjacent first vertical frame portion 11 or the second vertical frame portion 12 is exceeded. It is preferable that the length is not set.
Therefore, the maximum vertical displacement amount due to the pivoting of the vertical movement drive unit 30 and the vertical length of the horizontal frame piece are determined to be relatively optimal numerical values.
Thereby, even if the 1st vertical frame part 11 and the 2nd vertical frame part 12 pivot up and down, since the eyes of a sieve are not open | released, a sieving operation | work can be performed correctly.

上記上下動駆動部は油圧モータによる所定角度の正逆回転を用いたが、油圧シリンダを用いて、第１縦枠部１１と第２縦枠部１２とを個別に上下動させる構成、または公知の上下動する駆動装置を用いてもよい。
その他、要するにこの発明の要旨を変更しない範囲で種々設計変更しうること勿論である。 The vertical movement drive unit uses forward / reverse rotation of a predetermined angle by a hydraulic motor. However, a configuration in which the first vertical frame unit 11 and the second vertical frame unit 12 are individually moved up and down using a hydraulic cylinder, or publicly known. A drive device that moves up and down may be used.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.

１ ふるい構造
２ 凹部
３ 軸受部
４ 枢軸
５ 枢着部
１１ 第１縦枠部
１２ 第２縦枠部
１３ 基端部
１４ 基端部
１５ 先端部
１６ 先端部
２１ 第１横枠片
２２ 第２横枠片
２３ 補助横枠片
２４ 補助横枠片
３０ 上下動駆動部
３１ レバー部材
３２ 回転中心部
３３ 駆動モータ
３５ 第１連結軸
３６ 第２連結軸
３７ 第１ブラケット
３８ 第２ブラケット
Ｂ バケット
Ｓ 側板
Ｓ 側板
Ｌ１、Ｌ２ リンク部材 DESCRIPTION OF SYMBOLS 1 Sieve structure 2 Concave part 3 Bearing part 4 Pivot 5 Pivot 5 Pivoting part 11 1st vertical frame part 12 2nd vertical frame part 13 Base end part 14 Base end part 15 Front end part 16 Front end part 21 1st horizontal frame piece 22 2nd horizontal Frame piece 23 Auxiliary horizontal frame piece 24 Auxiliary horizontal frame piece 30 Vertical movement drive part 31 Lever member 32 Rotation center part 33 Drive motor 35 First connection shaft 36 Second connection shaft 37 First bracket 38 Second bracket
B Bucket S Side plate S Side plate L1, L2 Link member

Claims (2)

ふるいバケットの底面に設けられたふるい構造が、バケット開口側からバケット奥側に延び、バケット横幅方向に並列される多数の縦枠部と、各縦枠部の左右に一体に形成されて横方向に延びる横枠片とからなり、
隣接する一方の第１縦枠部が有する第１横枠片と、隣接する他方の第２縦枠部が有する第２横枠片とは、前記第１縦枠部および第２縦枠部の長手方向に沿って整合することなく相互にずれて配置されることでふるいの目となっており、
前記第１縦枠部と第２縦枠部との基端部はバケットの開口側で同一軸線上に枢着される枢着部が設けられており、
前記第１縦枠部と第２縦枠部の先端部は、上下動が逆になるように同期して枢動させる上下動駆動部に連結された状態となっていることを特徴とするふるい構造。 The sieve structure provided on the bottom of the sieve bucket extends from the bucket opening side to the bucket back side, and is formed in one piece on the left and right of each vertical frame part, and is formed in one piece on the left and right sides of each vertical frame part. A horizontal frame piece extending to
The first horizontal frame piece of one adjacent first vertical frame part and the second horizontal frame piece of the other adjacent second vertical frame part are the first vertical frame part and the second vertical frame part. It has become a sieve eye by being displaced from each other without alignment along the longitudinal direction,
The base end portion of the first vertical frame portion and the second vertical frame portion is provided with a pivoting portion pivotally mounted on the same axis on the opening side of the bucket,
The front ends of the first vertical frame portion and the second vertical frame portion are connected to a vertical motion drive unit that is pivoted synchronously so that the vertical motion is reversed. Construction. 多数の第１縦枠部の先端部を連結する第１連結軸と、多数の第２縦枠部の先端部を連結する第２連結軸がそれぞれ設けられており、
上下動駆動部が、中央を支点として両端が上下に反転動するレバー部材を有しており、
該レバー部材の一方端側に第１連結軸が枢着され、他方に第２連結軸が枢着されていることを特徴とする請求項１に記載のふるい構造。 A first connecting shaft for connecting the leading ends of a number of first vertical frame portions and a second connecting shaft for connecting the leading ends of a number of second vertical frame portions are provided,
The vertical movement drive unit has a lever member whose both ends move up and down with the center as a fulcrum,
The sieving structure according to claim 1, wherein a first connecting shaft is pivotally attached to one end of the lever member, and a second connecting shaft is pivotally attached to the other end.
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