JP3225463U - Attachment coupler, attachment, backhoe - Google Patents

Attachment coupler, attachment, backhoe Download PDF

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JP3225463U
JP3225463U JP2019004926U JP2019004926U JP3225463U JP 3225463 U JP3225463 U JP 3225463U JP 2019004926 U JP2019004926 U JP 2019004926U JP 2019004926 U JP2019004926 U JP 2019004926U JP 3225463 U JP3225463 U JP 3225463U
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backhoe
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誠二 細川
誠二 細川
信治 松山
信治 松山
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保線機器整備株式会社
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Abstract

【課題】異なるピン間隔およびピン径に対応したアタッチメント連結部をそれぞれ有する複数のバックホウでも連結することができるアタッチメント用カプラを提供する。【解決手段】大型バックホウ用のピン径が大きい大型バックホウ用ピン１３が挿入される第１大型バックホウ用ピン支持部１１ｄ１と、小型バックホウ用のピン径が小さい小型バックホウ用ピン１４が挿入される小型バックホウ用ピン支持部１１ｄ２と、第１大型バックホウ用ピン支持部１１ｄ１から大型バックホウ用ピン１３のピン間隔および小型バックホウ用ピン支持部１１ｄ２から小型バックホウ用ピン１４のピン間隔の双方に対応した位置に設けられ、第１大型バックホウ用ピン支持部１１ｄ１の内径と同じ内径を有する第２大型バックホウ用ピン支持部１１ｄ３とを有し、大型バックホウ用ピン１３または小型バックホウ用段付きピン１５を挿入する。【選択図】図１Provided is an attachment coupler that can be connected even with a plurality of backhoes each having an attachment connection portion corresponding to a different pin interval and a different pin diameter. A first large backhoe pin support portion (11d1) into which a large backhoe pin (13) having a large backhoe pin diameter is inserted, and a small backhoe pin (14) having a small pin diameter for a small backhoe are inserted. The position corresponding to both the pin spacing of the backhoe pin support 11d2, the pin spacing of the large backhoe pin 13 from the first large backhoe pin support 11d1, and the pin spacing of the small backhoe pin 14 from the small backhoe pin support 11d2. And a second large backhoe pin support 11d3 having the same inner diameter as the first large backhoe pin support 11d1. The large backhoe pin 13 or the small backhoe stepped pin 15 is inserted into the second large backhoe pin support 11d3. [Selection diagram] Fig. 1

Description

本考案は、アンダーカッターや、タイタンパー、マクラギグリッパー、バケット等の各種アタッチメント側に設けられ、バックホウの作業アーム先端のアタッチメント連結部が連結されるアタッチメント用カプラ、およびそのアタッチメント用カプラを有するアタッチメント、バックホウに関する。   The present invention provides an under-cutter, a tie tamper, a sleeper gripper, an attachment coupler that is provided on various attachment sides such as a bucket, and an attachment coupler to which an attachment coupling portion at the tip of a working arm of a backhoe is coupled, and an attachment having the attachment coupler. About backhoe.

従来より、保線作業現場等では、バックホウと呼ばれる建設機械の作業アーム先端にアタッチメント連結部を介してアンダーカッターや、タイタンパー、マクラギグリッパー、バケット等の各種アタッチメントが連結されて各種保線作業が行われている（例えば、特許文献１参照。）。このようなバックホウでは、油圧等で動作する作業アーム先端のアタッチメント連結部を、アタッチメント用カプラ側に設けられた２本のピンに連結して各種アタッチメントを装着し、各種保線作業を行う。   2. Description of the Related Art Conventionally, at a track maintenance work site or the like, various attachments such as an undercutter, a tie tamper, a sleeper gripper, and a bucket are connected to an end of a work arm of a construction machine called a backhoe through an attachment coupling portion, and various wire maintenance operations are performed. (For example, see Patent Document 1). In such a backhoe, various attachments are mounted by connecting an attachment connecting portion at the tip of a working arm operated by hydraulic pressure or the like to two pins provided on the side of the attachment coupler, and various line keeping operations are performed.

特開２０１９‐０３５３００号公報JP-A-2019-0335300

しかし、上述の特許文献１に記載されたアタッチメント側のアタッチメント用カプラでは、通常、バックホウやアタッチメントの大きさに応じてピンの間隔が決まっているため、そのピン間隔に対応しないアタッチメント連結部を有するバックホウでは連結できないという問題があった。   However, the attachment coupler on the attachment side described in Patent Literature 1 described above usually has an attachment connecting portion that does not correspond to the pin interval because the pin interval is determined according to the size of the backhoe or the attachment. There was a problem that connection was not possible with the backhoe.

特に、大型のバックホウは、作業アーム先端のアタッチメント連結部のピン間隔が大きい大間隔であるだけでなく、ピン径も大径となる一方、小型のバックホウは作業アーム先端のアタッチメント連結部のピン間隔およびピン径が小さくなる傾向にあり、同種のアタッチメントでも大型バックホウ用の物と小型バックホウ用の物を用意する必要があり、保管場所が必要になると共に、コストが上昇する問題があった。   In particular, a large backhoe not only has a large pin interval at the attachment connecting portion at the tip of the working arm, but also has a large pin diameter, while a small backhoe has a pin spacing at the attachment connecting portion at the tip of the working arm. In addition, the pin diameter tends to be small, and it is necessary to prepare a large backhoe and a small backhoe for the same type of attachment, which requires a storage space and increases costs.

そこで、本考案は、このような問題点を解決するためになされたもので、異なるピン間隔およびピン径に対応したアタッチメント連結部をそれぞれ有する複数のバックホウと連結することができるアタッチメント用カプラ、およびそのアタッチメント用カプラを有するアタッチメント、バックホウを提供することを目的とする。   Therefore, the present invention has been made in order to solve such problems, and an attachment coupler that can be connected to a plurality of backhoes each having an attachment connection portion corresponding to a different pin interval and pin diameter, and An object of the present invention is to provide an attachment and a backhoe having the attachment coupler.

前記課題を解決するため、本考案に係るアタッチメント用カプラは、アタッチメント側に設けられ、バックホウの作業アーム先端のアタッチメント連結部が連結されるアタッチメント用カプラであって、大型バックホウ用のピン径が大きい大型バックホウ用ピンが挿入され支持する第１大型バックホウ用ピン支持部と、小型バックホウ用のピン径が小さい小型バックホウ用ピンが挿入され支持する小型バックホウ用ピン支持部と、前記第１大型バックホウ用ピン支持部から前記大型バックホウ用ピンのピン間隔および前記小型バックホウ用ピン支持部から前記小型バックホウ用ピンのピン間隔の双方に対応した位置に設けられ、前記第１大型バックホウ用ピン支持部の内径と同じ内径を有する第２大型バックホウ用ピン支持部とを有し、前記第２大型バックホウ用ピン支持部には、前記大型バックホウ用ピンまたは両端部に前記大型バックホウ用ピンのピン径と同じ外径の大径部を有する一方、その両端部の大径部の間に前記小型バックホウ用ピンのピン径と同じ外径の小径部を有する小型バックホウ用段付きピンが挿通され、前記第１大型バックホウ用ピン支持部および前記第２大型バックホウ用ピン支持部にそれぞれ通した前記大型バックホウ用ピンを介して大型バックホウの作業アーム先端のアタッチメント連結部が連結される一方、前記小型バックホウ用ピン支持部に挿通された前記小型バックホウ用ピンと前記第２大型バックホウ用ピン支持部に通した前記小型バックホウ用段付きピンとを介して小型バックホウの作業アーム先端のアタッチメント連結部が連結されることを特徴とする。
また、本考案に係るアタッチメントでは、上述のアタッチメント用カプラを有することを特徴とする。
また、本考案に係るバックホウでは、上述のアタッチメントを装着されていることを特徴とする。 In order to solve the above problem, the attachment coupler according to the present invention is provided on the attachment side, and is an attachment coupler to which an attachment connection portion at the tip of the working arm of the backhoe is connected, and has a large pin diameter for a large backhoe. A first large backhoe pin support for inserting and supporting a large backhoe pin; a small backhoe pin support for inserting and supporting a small backhoe pin having a small diameter for the small backhoe; and a first large backhoe for the first large backhoe An inner diameter of the first large backhoe pin support provided at a position corresponding to both a pin interval of the large backhoe pin from the pin support and a pin interval of the small backhoe pin from the small backhoe pin support; And a second large backhoe pin support having the same inner diameter as (2) The large backhoe pin support has a large diameter portion having the same outer diameter as the pin diameter of the large backhoe pin at both ends thereof, or the large backhoe pin has a large diameter portion at both ends. The stepped pin for a small backhoe having a small diameter portion having the same outer diameter as the pin diameter of the small backhoe pin is inserted, and the pin is passed through the first large backhoe pin support and the second large backhoe pin support, respectively. The attachment connecting portion at the distal end of the working arm of the large backhoe is connected via the large backhoe pin, and the small backhoe pin inserted into the small backhoe pin support and the second large backhoe pin support are inserted through the small backhoe pin support. The attachment connecting portion at the tip of the working arm of the small backhoe is connected to the small backhoe stepped pin. The features.
Further, the attachment according to the present invention is characterized by having the above-mentioned attachment coupler.
The backhoe according to the present invention is characterized in that the above-mentioned attachment is mounted.

本考案に係るアタッチメント用カプラ、アタッチメント、バックホウでは、第１大型バックホウ用ピン支持部と、小型バックホウ用ピン支持部と、第２大型バックホウ用ピン支持部とを有し、第１大型バックホウ用ピン支持部と第２大型バックホウ用ピン支持部とにそれぞれ大型バックホウ用ピンを通した場合には大型バックホウの作業アーム先端のアタッチメント連結部を連結することができる。
また、小型バックホウ用ピン支持部には小型バックホウ用ピンを通し、第２大型バックホウ用ピン支持部には両端部に大型バックホウ用ピンのピン径と同じ外径の大径部を有し、かつ、中央部に小型バックホウ用ピンのピン径と同じ外径の小径部を有する小型バックホウ用段付きピンを通した場合には、小型バックホウの作業アーム先端のアタッチメント連結部を連結することができる。
そのため、一台のアタッチメントであっても異なるピン間隔およびピン径に対応したアタッチメント連結部を有する大型バックホウと小型バックホウの双方を連結することができる。 An attachment coupler, attachment, and backhoe according to the present invention include a first large backhoe pin support, a small backhoe pin support, and a second large backhoe pin support, and a first large backhoe pin. When the large backhoe pin is passed through the support portion and the second large backhoe pin support portion, the attachment connection portion at the tip of the working arm of the large backhoe can be connected.
In addition, the small backhoe pin support is passed through the small backhoe pin, and the second large backhoe pin support has a large diameter portion having the same outer diameter as the pin diameter of the large backhoe pin at both ends, and When the small backhoe stepped pin having a small diameter portion having the same outer diameter as that of the small backhoe pin is passed through the center portion, the attachment connecting portion at the tip of the working arm of the small backhoe can be connected.
Therefore, even with a single attachment, both a large backhoe and a small backhoe having attachment connection portions corresponding to different pin intervals and pin diameters can be connected.

本考案に係る実施形態のアタッチメント用カプラを有するアタッチメントであるアンダーカッターの斜視図である。1 is a perspective view of an undercutter, which is an attachment having an attachment coupler according to an embodiment of the present invention. 本考案に係る実施形態のアタッチメント用カプラの斜視図である。FIG. 2 is a perspective view of the attachment coupler according to the embodiment of the present invention. （ａ），（ｂ）それぞれ本考案に係る実施形態のアタッチメント用カプラの正面図、平面図である。2A and 2B are a front view and a plan view of the attachment coupler according to the embodiment of the present invention, respectively. （ａ），（ｂ）それぞれ図３（ｂ）におけるＡ−Ａ線断面図、Ｂ−Ｂ線断面図である。(A), (b) It is the sectional view on the AA line in FIG.3 (b), and the BB line sectional view, respectively. （ａ）〜（ｃ）それぞれ本考案に係る実施形態のアタッチメント用カプラにおける大型バックホウ用ピンの斜視図、正面図、側面図である。(A)-(c) It is the perspective view, front view, and side view of the pin for large backhoes in the coupler for attachment of embodiment which concerns on this invention, respectively. （ａ）〜（ｃ）それぞれ本考案に係る実施形態のアタッチメント用カプラにおける小型バックホウ用段付きピンの斜視図、正面図、側面図である。(A)-(c) It is the perspective view, front view, and side view of the stepped pin for small backhoes in the attachment coupler of embodiment which concerns on this invention, respectively. （ａ），（ｂ）それぞれ本考案に係る実施形態のアタッチメント用カプラを使用して大型バックホウの作業アームにアンダーカッターを連結した状態を示す全体正面図、大型バックホウのアタッチメント連結部とアタッチメント用カプラとの連結状態を示す要部拡大断面図である。(A), (b) The whole front view which shows the state which connected the under cutter to the work arm of the large backhoe using the attachment coupler of embodiment which concerns on this invention, respectively, the attachment connection part of a large backhoe, and the coupler for attachments. It is a principal part expanded sectional view which shows the connection state with this. （ａ），（ｂ）それぞれ本考案に係る実施形態のアタッチメント用カプラを使用して小型バックホウの作業アームにアンダーカッターを連結した状態を示す全体正面図、小型バックホウのアタッチメント連結部とアタッチメント用カプラとの連結状態を示す要部拡大断面図である。(A), (b) An overall front view showing a state in which an undercutter is connected to a working arm of a small backhoe using the attachment coupler of the embodiment according to the present invention, and an attachment connecting portion of the small backhoe and an attachment coupler. It is a principal part expanded sectional view which shows the connection state with this.

次に、本考案に係るアタッチメント用カプラ、アタッチメント、バックホウの実施形態について、添付図面を参照しながら説明する。尚、以下に説明する実施の形態はあくまで本考案の一例であり、本考案が下記に説明する実施の形態に限定されるものではなく、本考案の技術的思想の範囲内で適宜変更可能である。   Next, an embodiment of an attachment coupler, an attachment, and a backhoe according to the present invention will be described with reference to the accompanying drawings. The embodiment described below is merely an example of the present invention, and the present invention is not limited to the embodiment described below, and can be appropriately changed within the technical idea of the present invention. is there.

（アタッチメント用カプラ１）
実施形態のアタッチメント用カプラ１は、図１に示すように、アンダーカッター２等のアタッチメント側に設けられ、大型バックホウ３（図７参照。）や小型バックホウ３’（図８参照。）の作業アーム３１，３１’先端のアタッチメント連結部３２，３２’が連結されるもので、カプラ本体１１と、カプラ本体１１に取付けられバックホウ３からの油圧管（油圧チューブ）が連結される油圧連結部１２とを有する。 (Coupler for attachment 1)
As shown in FIG. 1, the attachment coupler 1 of the embodiment is provided on the attachment side of the under cutter 2 or the like, and a work arm of a large backhoe 3 (see FIG. 7) or a small backhoe 3 ′ (see FIG. 8). Attachment connection portions 32, 32 'at the ends of 31, 31' are connected to each other, and a coupler body 11 and a hydraulic connection portion 12 attached to the coupler body 11 and connected to a hydraulic tube (hydraulic tube) from the backhoe 3 are connected. Having.

カプラ本体１１は、図２や図３（ａ），（ｂ）および図４（ａ），（ｂ）等に示すように中央開口部１１ａ１が設けられる共に、油圧連結部１２が取り付けられる油圧連結用開口部１１ａ２とを有するカプラ本体ベース１１ａと、カプラ本体ベース１１ａの上面側に前方中継板１１ｂおよび後方中継板１１ｃを介し所定間隔を空けて立設するように溶接等によって設けられた一対のピン連結板１１ｄ，１１ｄとから構成されている。   The coupler body 11 has a central opening 11a1 as shown in FIGS. 2, 3 (a) and 3 (b) and FIGS. 4 (a) and 4 (b) and a hydraulic connection to which a hydraulic connection 12 is attached. Coupler base 11a having an opening 11a2 for use, and a pair of pairs provided by welding or the like so as to be erected at predetermined intervals via a front relay plate 11b and a rear relay plate 11c on the upper surface side of the coupler main base 11a. It is composed of pin connection plates 11d, 11d.

一対のピン連結板１１ｄ，１１ｄには、図７に示すような大型バックホウ３の作業アーム３１先端のアタッチメント連結部３２のピン間隔の例えば３８０ｍｍと、ピン径の例えば５０ｍｍに対応した図５に示すような大型バックホウ用ピン１３が挿入される第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１と、図８に示すような小型バックホウ３’の作業アーム３１’先端のアタッチメント連結部３２’のピン間隔の例えば２４５ｍｍと、ピン径の例えば４５ｍｍに対応した小型バックホウ用ピン１４が小型バックホウ用ピン支持部１１ｄ２，１１ｄ２と、第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１と内径が同じで、大型バックホウ用ピン１３だけでなく、後述する図６に示すように両端部が大型バックホウ用ピン１３のピン径である５０ｍｍと同じ外径である大径部１５ａ，１５ａである一方、大径部１５ａ，１５ａの間にはに小型バックホウ用ピン１４のピン径の４５ｍｍと同じである小径部１５ｂが形成された小型バックホウ用段付きピン１５とが挿通される第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３とが設けられている。   As shown in FIG. 5, the pair of pin connecting plates 11d and 11d correspond to the pin interval of the attachment connecting portion 32 at the tip of the work arm 31 of the large backhoe 3 as shown in FIG. The pin interval between the first large backhoe pin support portions 11d1 and 11d1 into which the large backhoe pin 13 is inserted and the attachment connecting portion 32 'at the tip of the work arm 31' of the small backhoe 3 'as shown in FIG. For example, the small backhoe pin 14 corresponding to a pin diameter of, for example, 245 mm and having a pin diameter of 45 mm has the same inner diameter as the small backhoe pin support portions 11d2 and 11d2 and the first large backhoe pin support portions 11d1 and 11d1. 13 as well as the pins of the large backhoe pin 13 at both ends as shown in FIG. The large diameter portions 15a, 15a having the same outer diameter as 50 mm are formed between the large diameter portions 15a, 15a, and a small diameter portion 15b having the same diameter as the pin diameter of the small backhoe pin 14 of 45 mm is formed between the large diameter portions 15a, 15a. The second large backhoe pin support portions 11d3 and 11d3 through which the small backhoe stepped pin 15 is inserted are provided.

図５（ａ）〜（ｃ）は、それぞれ、実施形態のアタッチメント用カプラ１の第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１および第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３に通される大型バックホウ用ピン１３の斜視図、正面図、側面図である。   FIGS. 5A to 5C respectively show the large backhoe passed through the first large backhoe pin support portions 11d1 and 11d1 and the second large backhoe pin support portions 11d3 and 11d3 of the attachment coupler 1 of the embodiment. It is a perspective view, front view, and side view of the pin 13 for use.

大型バックホウ用ピン１３は、図５（ａ）〜（ｃ）に示すように外径が５０ｍｍの円柱状の棒鋼から形成されており、左右両端部の内、いずれか一方の端部には、第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１から抜けないよう固定するための固定ピン（図示せず。）が挿入されるピン孔１３ａが設けられている。   As shown in FIGS. 5A to 5C, the large backhoe pin 13 is formed of a cylindrical steel bar having an outer diameter of 50 mm. A pin hole 13a into which a fixing pin (not shown) for fixing the first large backhoe pin support portion 11d1, 11d1 so as not to come off is provided.

尚、小型バックホウ用ピン１４も、外径４５ｍｍの円柱状の棒鋼を使用して図５（ａ）〜（ｃ）に示す大型バックホウ用ピン１３と同様に円柱状に構成されている。   The small backhoe pin 14 is also formed in a cylindrical shape using a cylindrical steel bar having an outer diameter of 45 mm, similarly to the large backhoe pin 13 shown in FIGS. 5 (a) to 5 (c).

図６（ａ）〜（ｃ）それぞれ、実施形態のアタッチメント用カプラ１の第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３に通される小型バックホウ用段付きピン１５の斜視図、正面図、側面図である。   6A to 6C are a perspective view, a front view, and a side view, respectively, of the small backhoe stepped pin 15 passed through the second large backhoe pin support portions 11d3 and 11d3 of the attachment coupler 1 of the embodiment. It is.

小型バックホウ用段付きピン１５は、図６（ａ）〜（ｃ）に示すように、両端部には大型バックホウ用ピン１３のピン径の５０ｍｍと同じ外径の大径部１５ａが設けられている一方、中央部には、小型バックホウ用ピン１４のピン径の４５ｍｍと同じ外径の小径部１５ｂが形成されており、いずれか一方の大径部１５ａには、第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３から抜けないよう固定するための固定ピン（図示せず。）が挿入されるピン孔１５ａ１が設けられている。   As shown in FIGS. 6A to 6C, the small backhoe stepped pin 15 has a large-diameter portion 15a having the same outer diameter as the 50 mm pin diameter of the large backhoe pin 13 at both ends. On the other hand, a small-diameter portion 15b having the same outer diameter as the pin diameter of the small backhoe pin 14 of 45 mm is formed in the central portion, and the second large backhoe pin support is formed on one of the large-diameter portions 15a. There is provided a pin hole 15a1 into which a fixing pin (not shown) for fixing so as not to fall out of the portions 11d3 and 11d3 is inserted.

（アンダーカッター２）
アンダーカッター２は、図１等に示すようにアタッチメント用カプラ１のカプラ本体ベース１１ａの底面側に取付けられ、油圧連結部１２を介して大型バックホウ３（図７参照）や小型バックホウ３’（図８参照）等から送られてくる油圧を利用して、アンダーカッター本体２ａの無限ベルト等に所定間隔で設けられた複数の掘削爪２ｂを移動させて道床の砕石を掘削したり、掻き出す周知の保線作業用の周知のアタッチメントである。 (Undercutter 2)
The under cutter 2 is attached to the bottom side of the coupler body base 11a of the attachment coupler 1 as shown in FIG. 1 and the like, and the large backhoe 3 (see FIG. 7) and the small backhoe 3 ′ (see FIG. 8), a plurality of excavating claws 2b provided at predetermined intervals on an infinite belt or the like of the undercutter main body 2a are moved to excavate or scrape crushed stone on a roadbed. This is a well-known attachment for track maintenance work.

＜実施形態のアタッチメント用カプラ１の使用方法＞
次に、以上のように構成された実施形態のアタッチメント用カプラ１の使用方法について説明する。尚、実施形態では、アタッチメント用カプラ１には、アタッチメントとして公知のアンダーカッター２を装着している。 <How to Use the Attachment Coupler 1 of the Embodiment>
Next, a method of using the attachment coupler 1 according to the embodiment configured as described above will be described. In the embodiment, a known undercutter 2 is attached to the attachment coupler 1 as an attachment.

（大型バックホウ３に使用する場合）
図７（ａ），（ｂ）は、それぞれ、大型バックホウ３の作業アーム３１先端のアタッチメント連結部３２に実施形態のアタッチメント用カプラ１を介してアンダーカッター２を連結した状態を示す全体正面図、その連結状態を示す要部拡大断面図である。 (When used for large backhoe 3)
FIGS. 7A and 7B are overall front views showing a state in which the undercutter 2 is connected to the attachment connecting portion 32 at the tip of the working arm 31 of the large backhoe 3 via the attachment coupler 1 of the embodiment. It is a principal part expanded sectional view which shows the connection state.

図７（ａ）に示すように大型バックホウ３に実施形態のアタッチメント用カプラ１を使用する場合は、図７（ｂ）に示すようにアタッチメント用カプラ１のカプラ本体１１の一対のピン連結板１１ｄ，１１ｄそれぞれの第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１に通した大型バックホウ用ピン１３と、第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３に通した大型バックホウ用ピン１３とにそれぞれ大型バックホウ３の作業アーム３１先端のアタッチメント連結部３２の連結爪３２ａ，３２ｂを係合して実施形態のアタッチメント用カプラ１を介してアンダーカッター２を連結する。   When the attachment coupler 1 of the embodiment is used for the large backhoe 3 as shown in FIG. 7A, a pair of pin connection plates 11d of the coupler body 11 of the attachment coupler 1 as shown in FIG. , 11d, and the large backhoe pin 13 passed through the first large backhoe pin support portions 11d1, 11d1, and the large backhoe pin 13 passed through the second large backhoe pin support portions 11d3, 11d3. The undercutter 2 is connected via the attachment coupler 1 of the embodiment by engaging the connection claws 32a, 32b of the attachment connection portion 32 at the tip of the work arm 31.

尚、この場合、小型バックホウ用ピン支持部１１ｄ２，１１ｄ２に小型バックホウ用ピン１４が挿入されていても挿入されてなくてもどちらでも良い。   In this case, the small backhoe pin 14 may or may not be inserted into the small backhoe pin support portions 11d2 and 11d2.

（小型バックホウ３に使用する場合）
図８（ａ），（ｂ）は、それぞれ、小型バックホウ３’の作業アーム３１’先端のアタッチメント連結部３２’に実施形態のアタッチメント用カプラ１を介してアンダーカッター２を連結した状態を示す全体正面図、その連結状態を示す要部拡大断面図である。尚、アタッチメント用カプラ１およびアンダーカッター２は、図７（ａ），（ｂ）に示す大型バックホウ３で使用したものと同じである。 (When used for small backhoe 3)
FIGS. 8A and 8B respectively show a state in which the undercutter 2 is connected to the attachment connecting portion 32 'at the tip of the working arm 31' of the small backhoe 3 'via the attachment coupler 1 of the embodiment. It is a front view and the principal part expanded sectional view which shows the connection state. The attachment coupler 1 and the undercutter 2 are the same as those used in the large backhoe 3 shown in FIGS. 7A and 7B.

図８（ａ）に示すように小型バックホウ３’に実施形態のアタッチメント用カプラ１を使用する場合は、図８（ｂ）に示すようにアタッチメント用カプラ１のカプラ本体１１の一対のピン連結板１１ｄ，１１ｄそれぞれの第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１に通した大型バックホウ用ピン１３を使用せず、その代わりに小型バックホウ用ピン支持部１１ｄ２，１１ｄ２に小型バックホウ用ピン１４を使用する。   When the attachment coupler 1 of the embodiment is used for the small backhoe 3 'as shown in FIG. 8A, a pair of pin connecting plates of the coupler body 11 of the attachment coupler 1 as shown in FIG. The large backhoe pin 13 passing through the first large backhoe pin support portions 11d1 and 11d1 of the respective 11d and 11d is not used. Instead, the small backhoe pin 14 is used for the small backhoe pin support portions 11d2 and 11d2. .

また、第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３には、大型バックホウ用ピン１３を挿入せず、その代わりに小型バックホウ用段付きピン１５を挿入して使用する。   Also, the large backhoe pin 13 is not inserted into the second large backhoe pin support portions 11d3, 11d3, and instead, the small backhoe stepped pin 15 is inserted and used.

小型バックホウ用段付きピン１５は、上述したように両端部には大型バックホウ用ピン１３のピン径の５０ｍｍと同じである大径部１５ａが設けられている一方、両端の大径部１５ａ，１５ａの間となる中央部には、小型バックホウ用ピン１４のピン径の４５ｍｍと同じである小径部１５ｂが設けられているため、第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３に小型バックホウ用段付きピン１５を挿入した場合、大径部１５ａ，１５ａが第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３に嵌るものの、一対のピン連結板１１ｄ，１１ｄ間には、小型バックホウ用ピン１４のピン径の４５ｍｍと同じである小径部１５ｂが露出する。   As described above, the small backhoe stepped pin 15 is provided at each end with a large diameter portion 15a that is the same as the pin diameter of the large backhoe pin 13 of 50 mm, while the large diameter portions 15a at both ends are provided. Since the small diameter portion 15b having the same diameter as the pin diameter of the small backhoe pin 14 of 45 mm is provided in the central portion between the small backhoe pins 14, the small backhoe pin support portions 11d3 and 11d3 are provided with small backhoe steps. When the pin 15 is inserted, the large diameter portions 15a, 15a fit into the second large backhoe pin support portions 11d3, 11d3, but the pin diameter of the small backhoe pin 14 is between the pair of pin connecting plates 11d, 11d. The small diameter part 15b which is the same as 45 mm is exposed.

そのため、小型バックホウ３’の作業アーム３１’先端のアタッチメント連結部３２’の連結爪３２ａ’，３２ｂ’は、小型バックホウ用ピン支持部１１ｄ２，１１ｄ２に通した小型バックホウ用ピン１４と、第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３に通した小型バックホウ用段付きピン１５の小径部１５ｂとに係合して実施形態のアタッチメント用カプラ１を介してアンダーカッター２を連結して、砕石の除去作業等を行うことができる。   Therefore, the connecting claws 32a 'and 32b' of the attachment connecting portion 32 'at the tip of the working arm 31' of the small backhoe 3 'are connected to the small backhoe pin 14 passed through the small backhoe pin support portions 11d2 and 11d2, and the second large The undercutter 2 is connected to the small-diameter portion 15b of the small backhoe stepped pin 15 passing through the backhoe pin support portions 11d3 and 11d3, and the undercutter 2 is connected via the attachment coupler 1 of the embodiment to remove crushed stone. Etc. can be performed.

尚、この場合、大型バックホウ用ピン支持部１１ｄ１，１１ｄ１には、大型バックホウ用ピン１３が挿入されていても挿入されてなくても良い。尚、図８（ｂ）では、大型バックホウ用ピン支持部１１ｄ１，１１ｄ１に大型バックホウ用ピン１３が挿入されたままである。   In this case, the large backhoe pin 13 may or may not be inserted into the large backhoe pin support portions 11d1 and 11d1. In FIG. 8B, the large backhoe pin 13 is still inserted in the large backhoe pin support portions 11d1 and 11d1.

＜本考案に係る実施形態のアタッチメント用カプラ１等のまとめ＞
以上説明したように、本考案に係る実施形態のアタッチメント用カプラ１では、大型バックホウ３用のピン径が大きい大型バックホウ用ピン１３が挿入される第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１と、小型バックホウ３’用のピン径が小さい小型バックホウ用ピン１４が挿入される小型バックホウ用ピン支持部１１ｄ２，１１ｄ２と、第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１から大型バックホウ用ピン１３のピン間隔および小型バックホウ用ピン支持部１１ｄ２，１１ｄ２から小型バックホウ用ピン１４のピン間隔の双方に対応した位置に設けられ、第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１の内径と同じ内径を有する第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３とを有し、第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３には、大型バックホウ用ピン１３または両端部に大型バックホウ用ピン１３のピン径と同じ外径の大径部１５ａ，１５ａを有する一方、中央部に小型バックホウ用ピン１４のピン径と同じ外径の小径部１５ｂを有する小型バックホウ用段付きピン１５を挿通する。 <Summary of Attachment Coupler 1 etc. of Embodiment According to the Present Invention>
As described above, in the attachment coupler 1 of the embodiment according to the present invention, the first large backhoe pin support portions 11d1 and 11d1 into which the large backhoe pin 13 having a large pin diameter for the large backhoe 3 is inserted, The pin interval between the small backhoe pin support portions 11d2 and 11d2 into which the small backhoe pin 14 having a small pin diameter for the small backhoe 3 'is inserted, and the large backhoe pin 13 from the first large backhoe pin support portions 11d1 and 11d1. A second large-sized backhoe pin supporting portion provided at a position corresponding to both the pin spacing of the small backhoe pin from the small backhoe pin supporting portions, and having the same inner diameter as the inner diameter of the first large backhoe pin supporting portion. A second large backhoe having backhoe pin support portions 11d3 and 11d3; The pin support portions 11d3 and 11d3 have large-diameter backhoe pins 13 or large-diameter portions 15a and 15a having the same outer diameter as the large-diameter backhoe pins 13 at both ends, and small-diameter backhoe pins 14 at the center. The stepped pin 15 for the small backhoe having the small diameter portion 15b having the same outer diameter as the diameter of the pin is inserted.

そのため、大型バックホウ３は、その作業アーム３１先端のアタッチメント連結部３２の連結爪３２ａ，３２ｂが第１大型バックホウ用ピン支持部１１ｄ１，１１ｄ１と第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３とに挿通した大型バックホウ用ピン１３，１３に係合することにより、実施形態のアタッチメント用カプラ１を介してアンダーカッター２等のアタッチメントを装着して、砕石の除去作業等を行うことができる。   Therefore, in the large backhoe 3, the connecting claws 32a, 32b of the attachment connecting portion 32 at the tip of the work arm 31 are inserted through the first large backhoe pin support portions 11d1, 11d1 and the second large backhoe pin support portions 11d3, 11d3. By engaging the large backhoe pins 13, 13, an attachment such as the under cutter 2 can be attached via the attachment coupler 1 of the embodiment, and crushed stone removal work and the like can be performed.

その一方、小型バックホウ３’は、その作業アーム３１’先端のアタッチメント連結部３２’の連結爪３２ａ’，３２ｂ’が小型バックホウ用ピン支持部１１ｄ２，１１ｄ２に通した小型バックホウ用ピン１４と、第２大型バックホウ用ピン支持部１１ｄ３，１１ｄ３に通した小型バックホウ用段付きピン１５の小径部１５ｂに係合することにより、実施形態のアタッチメント用カプラ１を介して大型バックホウ３でも使用したアンダーカッター２を連結して、砕石の除去作業等を行うことができる。   On the other hand, the small backhoe 3 ′ has a small backhoe pin 14 in which the connecting claws 32 a ′ and 32 b ′ of the attachment connecting portion 32 ′ at the tip of the working arm 31 ′ pass through the small backhoe pin support portions 11 d 2 and 11 d 2. (2) The undercutter 2 used in the large backhoe 3 via the attachment coupler 1 of the embodiment by engaging with the small diameter portion 15b of the small backhoe stepped pin 15 passing through the large backhoe pin support portions 11d3 and 11d3. Can be connected to perform crushed stone removal work and the like.

尚、上記実施形態の説明では、アンダーカッター２のアタッチメント用カプラ１を一例として説明したが、本考案ではアンダーカッター２のアタッチメント用カプラ１に限定されることはなく、タイタンパー、マクラギグリッパー、バケット等、アンダーカッター２以外の各種アタッチメントのアタッチメント用カプラにも適用可能である。   In the description of the above-described embodiment, the attachment coupler 1 of the undercutter 2 has been described as an example. However, the present invention is not limited to the attachment coupler 1 of the undercutter 2, and the tie tamper, the sleeper gripper, and the bucket may be used. For example, the present invention can be applied to an attachment coupler for various attachments other than the undercutter 2.

また、上記実施形態の説明では、ピン間隔およびピン径が異なる大型バックホウ３および小型バックホウ３’の２種のバックホウで説明したが、本考案ではこれに限らず、ピン間隔およびピン径が異なる３種のバックホウ、つまり、さらに例えば中型バックホウにも使用できるように構成しても良い。この場合、本考案に係るアタッチメント用カプラには、第１大型バックホウ用ピン支持部から大型バックホウ用ピンのピン間隔および小型バックホウ用ピン支持部から小型バックホウ用ピンのピン間隔、さらには中型バックホウ用ピン支持部を設け、その中型バックホウ用ピン支持部から中型バックホウ用ピンのピン間隔の全てに対応した位置に、第１大型バックホウ用ピン支持部の内径と同じ内径を有する第２大型バックホウ用ピン支持部とを有し、この第２大型バックホウ用ピン支持部には、大型バックホウ用ピンや、両端部に大型バックホウ用ピンのピン径と同じ外径の大径部を有する一方、その両端部の大径部の間に小型バックホウ用ピンのピン径と同じ外径の小径部を有する小型バックホウ用段付きピン、さらには中型バックホウ用ピンのピン径と同じ外径の小径部を有する中型バックホウ用段付きピンを用意してそれぞれ差し替えて挿入できるるように構成すれば良い。   Further, in the description of the above-described embodiment, the two types of backhoes, the large backhoe 3 and the small backhoe 3 ′ having different pin intervals and pin diameters, have been described. It may be configured so that it can be used for a kind of backhoe, that is, for example, a medium-sized backhoe. In this case, the attachment coupler according to the present invention includes a pin interval between the first large backhoe pin support and the pin for the large backhoe pin and a pin interval between the small backhoe pin support and the pin for the small backhoe, and further for a medium-sized backhoe. A second large backhoe pin having an inner diameter equal to the inner diameter of the first large backhoe pin support at a position corresponding to all of the pin intervals of the medium backhoe pin from the medium backhoe pin support to a pin support; The second large backhoe pin support has a large backhoe pin and a large-diameter portion at both ends having the same outer diameter as the pin diameter of the large backhoe pin. A small backhoe stepped pin having a small diameter portion having the same outer diameter as the pin diameter of the small backhoe pin between the large diameter portions of the It may be configured to insert Dekiruru so by replacing each prepared stepped pin Medium backhoe having a small diameter portion of the same outer diameter as the pin diameter of the pin.

１ アタッチメント用カプラ
１１ カプラ本体
１１ａ カプラ本体ベース
１１ａ１ 中央開口部
１１ａ２ 油圧連結用開口部
１１ｂ 前方中継板
１１ｃ 後方中継板
１１ｄ，１１ｄ ピン連結板
１１ｄ１，１１ｄ１ 第１大型バックホウ用ピン支持部
１１ｄ２，１１ｄ２ 小型バックホウ用ピン支持部
１１ｄ３，１１ｄ３ 第２大型バックホウ用ピン支持部
１２ 油圧連結部
１３ 大型バックホウ用ピン
１３ａ ピン孔
１４ 小型バックホウ用ピン
１５ 小型バックホウ用段付きピン
１５ａ 大径部
１５ｂ 小径部
１５ａ１ ピン孔
２ アンダーカッター（アタッチメント）
３ 大型バックホウ
３１ 作業アーム
３２ アタッチメント連結部
３２ａ，３２ｂ 連結爪
３’ 小型バックホウ
３１’ 作業アーム
３２’ アタッチメント連結部
３２ アタッチメント連結部
３２ａ’，３２ｂ’ 連結爪 DESCRIPTION OF SYMBOLS 1 Attachment coupler 11 Coupler main body 11a Coupler main body base 11a1 Central opening 11a2 Hydraulic connection opening 11b Front relay board 11c Rear relay board 11d, 11d Pin connection board 11d1, 11d1 Pin support for first large backhoe 11d2, 11d2 Small Backhoe pin support portions 11d3, 11d3 Second large backhoe pin support portion 12 Hydraulic coupling portion 13 Large backhoe pin 13a Pin hole 14 Small backhoe pin 15 Small backhoe stepped pin 15a Large diameter portion 15b Small diameter portion 15a1 Pin hole 2 Under cutter (attachment)
3 Large backhoe 31 Work arm 32 Attachment connection part 32a, 32b Connection claw 3 'Small backhoe 31' Work arm 32 'Attachment connection part 32 Attachment connection part 32a', 32b 'Connection claw

Claims (3)

アタッチメント側に設けられ、バックホウの作業アーム先端のアタッチメント連結部が連結されるアタッチメント用カプラであって、
大型バックホウ用のピン径が大きい大型バックホウ用ピンが挿入され支持する第１大型バックホウ用ピン支持部と、
小型バックホウ用のピン径が小さい小型バックホウ用ピンが挿入され支持する小型バックホウ用ピン支持部と、
前記第１大型バックホウ用ピン支持部から前記大型バックホウ用ピンのピン間隔および前記小型バックホウ用ピン支持部から前記小型バックホウ用ピンのピン間隔の双方に対応した位置に設けられ、前記第１大型バックホウ用ピン支持部の内径と同じ内径を有する第２大型バックホウ用ピン支持部とを有し、
前記第２大型バックホウ用ピン支持部には、前記大型バックホウ用ピンまたは両端部に前記大型バックホウ用ピンのピン径と同じ外径の大径部を有する一方、その両端部の大径部の間に前記小型バックホウ用ピンのピン径と同じ外径の小径部を有する小型バックホウ用段付きピンが挿通され、
前記第１大型バックホウ用ピン支持部および前記第２大型バックホウ用ピン支持部にそれぞれ通した前記大型バックホウ用ピンを介して大型バックホウの作業アーム先端のアタッチメント連結部が連結される一方、
前記小型バックホウ用ピン支持部に挿通された前記小型バックホウ用ピンと前記第２大型バックホウ用ピン支持部に通した前記小型バックホウ用段付きピンとを介して小型バックホウの作業アーム先端のアタッチメント連結部が連結されることを特徴とするアタッチメント用カプラ。 An attachment coupler provided on the attachment side, to which an attachment connection portion at the tip of the working arm of the backhoe is connected.
A first large backhoe pin support for inserting and supporting a large backhoe pin having a large backhoe pin diameter;
A small backhoe pin support for inserting and supporting a small backhoe pin having a small diameter for the small backhoe pin;
The first large backhoe is provided at a position corresponding to both a pin interval between the first large backhoe pin support and the pin for the large backhoe pin and a pin interval between the small backhoe pin support and the pin interval for the small backhoe pin. A second large backhoe pin support having the same inner diameter as the inner diameter of the pin support for
The second large-sized backhoe pin support has a large-diameter portion having the same outer diameter as the large-diameter backhoe pin or at both ends thereof, and between the large-diameter portions at both ends thereof. The small backhoe stepped pin having a small diameter portion having the same outer diameter as the pin diameter of the small backhoe pin is inserted into,
While the attachment connecting portion at the tip of the working arm of the large backhoe is connected via the large backhoe pin passing through the first large backhoe pin support portion and the second large backhoe pin support portion,
The attachment connecting portion at the tip of the working arm of the small backhoe is connected via the small backhoe pin inserted through the small backhoe pin support portion and the small backhoe stepped pin passed through the second large backhoe pin support portion. A coupler for an attachment characterized by being performed. 請求項１記載のアタッチメント用カプラを有することを特徴とするアタッチメント。   An attachment comprising the attachment coupler according to claim 1. 請求項２記載のアタッチメントを装着されていることを特徴とするバックホウ。   A backhoe equipped with the attachment according to claim 2.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022090777A (en) * 2020-12-08 2022-06-20 保線機器整備株式会社 Bogie with under cutter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022090777A (en) * 2020-12-08 2022-06-20 保線機器整備株式会社 Bogie with under cutter
JP7304078B2 (en) 2020-12-08 2023-07-06 保線機器整備株式会社 Trolley with undercutter

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