JP6529368B2 - Undercarriage of construction machinery - Google Patents

Undercarriage of construction machinery Download PDF

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JP6529368B2
JP6529368B2 JP2015140411A JP2015140411A JP6529368B2 JP 6529368 B2 JP6529368 B2 JP 6529368B2 JP 2015140411 A JP2015140411 A JP 2015140411A JP 2015140411 A JP2015140411 A JP 2015140411A JP 6529368 B2 JP6529368 B2 JP 6529368B2
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crawler
guide
recess
mounting portion
shoe
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JP2017019453A (en
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一磨 佐々木
一磨 佐々木
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Nippon Sharyo Ltd
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Description

本発明は、建設機械の下部走行体に関し、詳しくは、クローラを支持する走行フレームの上部に、クローラシューの移動をガイドするクローラガイドを突設した建設機械の下部走行体に関する。   The present invention relates to a lower traveling body of a construction machine, and more particularly, to a lower traveling body of a construction machine in which a crawler guide for guiding a movement of a crawler shoe is provided at an upper portion of a traveling frame supporting a crawler.

従来、各種建設機械の下部走行体として、車体前後方向に延びる左右一対の走行フレームの一端部に駆動輪を、他端部に従動輪をそれぞれ設け、従動輪と駆動輪とに、複数のクローラシューを無端状に連結して形成したクローラを掛け回すとともに、走行フレームの上部にクローラシューの移動をガイドする複数のクローラガイドを突設したものがあった。また、クローラガイドを走行フレームに着脱可能に設け、クローラガイドがクローラシューとの摺接によって摩耗した際に交換できるようにしたものがあった（例えば、特許文献１参照。）。   Conventionally, as a lower traveling body of various construction machines, drive wheels are provided at one end of a pair of left and right travel frames extending in the longitudinal direction of the vehicle body, and driven wheels are provided at the other end, and a plurality of crawlers are provided for driven wheels and drive wheels. There has been a structure in which a crawler formed by endlessly connecting shoes is wound and rotated, and a plurality of crawler guides for guiding the movement of the crawler shoes are provided in the upper part of the traveling frame. Further, there has been a system in which a crawler guide is detachably provided on a traveling frame so that the crawler guide can be replaced when it is worn by sliding contact with a crawler shoe (for example, see Patent Document 1).

特開２０１２−２０５９１号公報JP 2012-20591 A

しかし、上述の下部走行体では、クローラガイドは走行フレームの天板に、ボルト等の固定部材で着脱可能に設けられていることから、クローラシューからクローラガイドに掛かる車体前後方向の負荷が固定部材に集中して掛かり、クローラガイドの耐久性が低下していた。   However, in the lower traveling body described above, since the crawler guide is detachably provided on the top plate of the traveling frame by a fixing member such as a bolt, the load in the vehicle longitudinal direction applied to the crawler guide from the crawler shoe is the fixing member The durability of the crawler guide was reduced.

そこで本発明は、クローラガイドの耐久性を向上させ、コストの削減を図ることができる建設機械の下部走行体を提供することを目的としている。   Then, an object of this invention is to provide the lower traveling body of the construction machine which can improve durability of a crawler guide and can aim at cost reduction.

上記目的を達成するため、本発明の建設機械の下部走行体は、車体前後方向に延びる左右一対の走行フレームの一端部に駆動輪を、他端部に従動輪をそれぞれ設け、該従動輪と前記駆動輪とに、複数のクローラシューを無端状に連結して形成したクローラを掛け回すとともに、前記走行フレームの上部に、前記クローラシューの移動をガイドするクローラガイドを突設した建設機械の下部走行体において、前記走行フレームの上部に、前記クローラガイドを取り付ける凹部を上面に備えたブラケット部材を取り付け、前記クローラガイドは、前記凹部内に収容される取付部と、該取付部から突出して前記クローラシューの移動をガイドするガイド部とを備え、前記取付部は、前記凹部の底部にボルトにて着脱可能に取り付けられ、前記凹部は、前記ブラケット部材の側面に開口して形成され、前記クローラガイドは、前記取付部の一端部から前記クローラシュー側に突出する第１ガイド部と、前記取付部の一端部から反クローラシュー側に突出する第２ガイド部とを備えた断面Ｔ字状に形成され、前記第１ガイド部を前記クローラシューに当接させるとともに、第２ガイド部を前記クローラガイドの前記凹部が開口した側面に当接させた状態で、前記取付部を前記凹部に取り付け、前記第１ガイド部が摩耗した際には、前記取付部を前記凹部から取り外し、前記第１ガイド部と前記第２ガイド部とを上下方向に反転させて前記凹部に取り付け可能としたことを特徴としている。 In order to achieve the above object, the lower traveling body of the construction machine of the present invention is provided with a driving wheel at one end of a pair of traveling frames extending in the longitudinal direction of the vehicle body and a driven wheel at the other end. A lower portion of a construction machine in which a crawler guide formed by connecting a plurality of crawler shoes in an endless shape is wound around the drive wheel and a crawler guide for guiding the movement of the crawler shoe is projected on the upper portion of the traveling frame. In the traveling body, a bracket member provided on the upper surface with the recess for attaching the crawler guide on the upper surface of the traveling frame is attached, and the crawler guide protrudes from the attachment portion accommodated in the recess and the attachment portion. and a guide portion for guiding the movement of the crawler shoe, the attachment portion is detachably attached by bolts to the bottom of the recess, the recess The crawler guide is formed to open at the side surface of the bracket member, and the crawler guide projects from the one end of the mounting portion to the first guide portion that protrudes toward the crawler shoe, and the one end of the mounting portion to the opposite crawler shoe And the second guide portion is in contact with the side face of the crawler guide in which the recess is opened. In the state where the first guide portion is worn, the mounting portion is removed from the concave portion, and the first guide portion and the second guide portion are vertically moved. It is characterized in that it can be inverted and attached to the recess .

さらに、前記クローラガイドは、前記取付部の一端部に前記ガイド部が突設された断面Ｌ字状に形成され、取付部の上面に高さ調整用のシム板を載置した状態で前記凹部に取り付けられ、前記ガイド部が摩耗した際には、前記取付部を前記凹部から取り外し、前記凹部の底部と前記取付部との間に前記シム板を介装した状態で、前記凹部に取り付け可能とすると好適である。   Furthermore, the crawler guide is formed in an L-shaped cross section in which the guide portion protrudes at one end of the attachment portion, and the recessed portion is in a state in which a height adjustment shim plate is mounted on the upper surface of the attachment portion. When the guide portion is worn, the mounting portion can be removed from the recess and can be attached to the recess with the shim plate interposed between the bottom of the recess and the mounting portion. It is preferable to assume.

本発明の建設機械の下部走行体によれば、クローラガイドは、走行フレームの上部に設けたブラケット部材の凹部に取付部が収容され、凹部の底部にボルトにて着脱可能に取り付けられることから、クローラシューからクローラガイドに掛かる車体前後方向の負荷をボルトとともに、取付部が当接する凹部の外側壁でも受けることができ、クローラガイドの耐久性を向上させ、コストの削減を図ることができる。さらに、クローラガイドの取付部は凹部により位置決めされることから、クローラガイドを所定の位置に容易、且つ、確実に取り付けることができる。   According to the lower traveling body of the construction machine of the present invention, the crawler guide has the mounting portion accommodated in the recess of the bracket member provided on the upper portion of the traveling frame and is removably mounted on the bottom of the recess by bolts. The load in the vehicle longitudinal direction applied to the crawler guide from the crawler shoe can be received together with the bolt on the outer wall of the recess in contact with the mounting portion, the durability of the crawler guide can be improved, and the cost can be reduced. Furthermore, since the attachment portion of the crawler guide is positioned by the recess, the crawler guide can be easily and reliably attached to a predetermined position.

また、凹部をブラケット部材の側面に開口して形成し、クローラガイドを、取付部の一端部からクローラシュー側に突出する第１ガイド部と、取付部の一端部から反クローラシュー側にブラケット部材の側面に沿って突出する第２ガイド部とを備えた断面Ｔ字状に形成し、第１ガイド部が摩耗した際には、取付部を凹部から取り外し、第１ガイド部と第２ガイド部とを上下方向に反転させて凹部に再度取り付けることにより、クローラガイドの使用期間を長くすることができ、コストの削減を図ることができる。   Further, the concave portion is formed by opening on the side surface of the bracket member, and the crawler guide is formed by a first guide portion projecting from one end of the mounting portion to the crawler shoe side and a bracket member from the one end of the mounting portion to the opposite crawler shoe And a second guide portion protruding along the side surface of the body in a T-shaped cross section, and when the first guide portion wears, the mounting portion is removed from the recess, and the first guide portion and the second guide portion Can be extended in the up and down direction, and the usage period of the crawler guide can be extended, and the cost can be reduced.

さらに、クローラガイドは、取付部の一端部にガイド部が突設された断面Ｌ字状に形成され、取付部の上面に高さ調整用のシム板を載置した状態で凹部に取り付けられ、ガイド部が摩耗した際には、取付部を凹部から取り外し、凹部の底部と取付部との間に前記シム板を介装した状態で、凹部に再度取り付けることにより、クローラガイドの使用期間を長くすることができ、コストの削減を図ることができる。   Furthermore, the crawler guide is formed in an L-shaped cross section in which the guide portion is provided at one end of the attachment portion so as to protrude, and is attached to the recess in a state where the height adjustment shim plate is mounted on the upper surface of the attachment portion When the guide part is worn out, the attachment part is removed from the recess, and while the shim plate is interposed between the bottom of the recess and the attachment part, reattachment to the recess extends the usage period of the crawler guide The cost can be reduced.

図２のＩ−Ｉ断面図である。It is II sectional drawing of FIG. 本発明の第１形態例を示す下部走行体の要部側面図である。It is a principal part side view of a lower run body which shows the example of the 1st form of the present invention. 同じく下部走行体の側面図である。It is a side view of a lower traveling body similarly. 同じく走行フレームの要部平面図である。It is a principal part top view of a traveling frame similarly. 同じく杭打機の側面図である。It is a side view of a pile driving machine similarly. 本発明の第２形態例を示す下部走行体の要部断面図である。It is principal part sectional drawing of the undercarriage which shows the example of a 2nd form of the present invention. 本発明の第３形態例を示す下部走行体の要部断面図である。It is principal part sectional drawing of the lower traveling body which shows the example of a 3rd form of this invention.

図１乃至図５は本発明の下部走行体を、大型の建設機械の一つである杭打機の下部走行体に適用した第１形態例を示している。図５に示す杭打機１１は、走行フレーム１２とクローラ１３とを備えた下部走行体１４の上部に、上部旋回体１５が旋回可能に設けられている。上部旋回体１５の前部には、リーダ１６やフロントジャッキ１７が取り付けられるリーダブラケット１８が設けられ、該リーダブラケット１８に立設したリーダ１６を２本のバックステー１９，１９で支持するようにしている。また、上部旋回体１５の後部にはリアジャッキ２０と、カウンタウエイト２１とが設けられている。   1 to 5 show a first embodiment in which the lower traveling body of the present invention is applied to the lower traveling body of a pile driving machine which is one of large construction machines. The pile driving machine 11 shown in FIG. 5 is provided with the upper swinging body 15 so as to be able to turn on the upper portion of the lower traveling body 14 provided with the traveling frame 12 and the crawler 13. A leader bracket 18 to which a leader 16 and a front jack 17 are attached is provided at the front of the upper swing body 15, and the leader 16 erected on the leader bracket 18 is supported by two back stays 19 and 19. ing. Further, a rear jack 20 and a counterweight 21 are provided at the rear of the upper swing body 15.

走行フレーム１２は、上部旋回体１５を旋回可能に支持するトラックフレームの左右両側に一対のサイドフレーム１２ａ，１２ａを備えたもので、各サイドフレーム１２ａには、トラックフレームのアクスル２２，２２をそれぞれ挿通させる開口部１２ｂ，１２ｂと、トラックフレームに設けられたシリンダ２３の先端を取り付ける中央開口部１２ｃとを備えている。また、走行フレーム１２の後端部には、駆動輪となる一対のスプロケットホイール２４が設けられ、走行フレーム１２の前端部には、従動輪となるとともにクローラ１３の張りを調整するためのアイドラホイール２５が設けられている。また、走行フレーム１２の上部には、前後方向両端部に、サスペンション機構を備えた２個の転輪２６が、下部には、同様の１３個の転輪２６がそれぞれ設けられている。   The traveling frame 12 is provided with a pair of side frames 12a and 12a on the left and right sides of a track frame that rotatably supports the upper swing body 15, and each side frame 12a has axles 22 and 22 of the track frame. It is provided with openings 12b and 12b to be inserted and a central opening 12c to which the tip of a cylinder 23 provided on the track frame is attached. Further, at the rear end of the traveling frame 12, a pair of sprocket wheels 24 serving as driving wheels are provided, and at the front end of the traveling frame 12, an idler wheel for adjusting the tension of the crawler 13 as well as a driven wheel. 25 are provided. Further, at the upper part of the traveling frame 12, two rolling wheels 26 provided with a suspension mechanism are provided at both ends in the front-rear direction, and the same thirteen rolling wheels 26 are provided at the lower part.

サイドフレーム１２ａの前記開口部１２ｂ，１２ｂと中央開口部１２ｃとに対応する上部３箇所には、車体前後方向に長尺な一対のブラケット部材２７，２８が、車体内側と車体外側とに平行に取り付けられ、各ブラケット部材２７，２８には、クローラガイド２９がそれぞれ取り付けられている。各ブラケット部材２７，２８には、クローラガイド２９を収容して取り付ける凹部２７ａ，２８ａが形成され、車体内側に配置されるブラケット部材２７の凹部２７ａは、車体外側の側面２７ｂに開口して形成され、車体外側に配置されるブラケット部材２８の凹部２８ａは車体内側の側面２８ｂに開口して形成されている。また、各凹部２７ａ，２８ａの底部には複数の雌ねじ孔２７ｃ，２８ｃが所定の位置にそれぞれ形成されている。   A pair of bracket members 27 and 28 which are long in the longitudinal direction of the vehicle body are parallel to the inside and outside of the vehicle body at three upper portions corresponding to the openings 12b and 12b and the central opening 12c of the side frame 12a. The crawler guides 29 are attached to the respective bracket members 27 and 28. Recesses 27a, 28a for accommodating and attaching the crawler guide 29 are formed in the respective bracket members 27, 28, and the recess 27a of the bracket member 27 disposed inside the vehicle body is formed to be open at the side surface 27b outside the vehicle body The recess 28a of the bracket member 28 disposed outside the vehicle body is formed to open at the side surface 28b inside the vehicle body. Further, a plurality of female screw holes 27c, 28c are respectively formed at predetermined positions in the bottoms of the respective recesses 27a, 28a.

クローラガイド２９は、凹部２７ａ内に収容される取付部２９ａと、取付部２９ａの一端部から上方に突出するガイド部２９ｂとを備え、取付部２９ａには複数のボルト挿通孔２９ｃが前記雌ねじ孔２７ｃ，２８ｃと対応する位置に形成されている。車体内側に配置されるブラケット部材２７の凹部２７ａには、ガイド部２９ｂを車体外側に向けて取付部２９ａが配置され、各ボルト挿通孔２９ｃにそれぞれ挿通したボルト３０を各雌ねじ孔２７ｃに螺着することにより取り付けられる。また、車体外側に配置されるブラケット部材２８の凹部２８ａには、ガイド部２９ｂを車体内側に向けて取付部２９ａが配置され、各ボルト挿通孔２９ｃにそれぞれ挿通したボルト３０を各雌ねじ孔２８ｃに螺着することにより取り付けられる。   The crawler guide 29 includes an attaching portion 29a accommodated in the recess 27a and a guide portion 29b projecting upward from one end of the attaching portion 29a, and a plurality of bolt insertion holes 29c are provided in the attaching portion 29a. It is formed in the position corresponding to 27c and 28c. The mounting portion 29a is disposed in the recess 27a of the bracket member 27 disposed on the inner side of the vehicle body with the guide portion 29b facing the outer side of the vehicle body, and bolts 30 respectively inserted through the bolt insertion holes 29c are screwed into the female screw holes 27c. It is attached by doing. In the recess 28a of the bracket member 28 disposed outside the vehicle body, the mounting portion 29a is disposed with the guide portion 29b facing inward of the vehicle body, and the bolts 30 respectively inserted into the bolt insertion holes 29c are inserted into the female screw holes 28c. It is attached by screwing.

クローラ１３は、複数の金属製のクローラシュー１３ａをリンクピン３１にて無端状に連結し、スプロケットホイール２４とアイドラホイール２５とに架け回したものであって、クローラシュー１３ａは、車体幅方向に長い長方形状に形成され、車体前後方向両端部が、隣接するクローラシュー１３ａにリンクピン３１にて連結される。また、クローラシュー１３ａの車体幅方向中央部には、スプロケットホイール２４に係合する係合突部１３ｂが設けられている。   The crawler 13 is formed by endlessly connecting a plurality of metal crawler shoes 13a with link pins 31, and is wound around the sprocket wheel 24 and the idler wheel 25. The crawler shoes 13a extend in the vehicle width direction. It is formed in a long rectangular shape, and both ends in the longitudinal direction of the vehicle body are connected to the adjacent crawler shoes 13 a by link pins 31. Further, an engagement projection 13b that engages with the sprocket wheel 24 is provided at the center of the crawler shoe 13a in the vehicle width direction.

上述のように形成されたクローラ１３は、スプロケットホイール２４の駆動により、アイドラホイール２５及び複数の転輪２６とクローラガイド２９とに案内されながら回動する。このとき、クローラガイド２９には、クローラシュー１３ａとの摺接により、車体前後方向に負荷が掛かるが、この負荷をクローラガイド２９の取付部２９ａに当接するブラケット部材２７，２８の各凹部２７ａ，２８ａの外側壁とボルト３０とで受けることができ、クローラガイド２９の耐久性を向上させることができる。また、クローラシュー１３ａとの摺接により、クローラガイド２９のガイド部２９ｂが摩耗した際には、ボルト３０を取り外すことにより、クローラガイド２９を容易に取り外して交換することができる。さらに、クローラガイド２９の取付部２９ａは各凹部２７ａ，２８ａにより位置決めされることから、クローラガイド２９を所定の位置に容易、且つ、確実に取り付けることができる。   The crawler 13 formed as described above is rotated by being driven by the sprocket wheel 24 while being guided by the idler wheel 25, the plurality of rolling wheels 26 and the crawler guide 29. At this time, a load is applied to the crawler guide 29 in the longitudinal direction of the vehicle body by sliding contact with the crawler shoe 13a, but the load is recessed in each of the bracket members 27 and 28 in contact with the mounting portion 29a of the crawler guide 29. It can be received by the outer wall 28 a and the bolt 30, and the durability of the crawler guide 29 can be improved. In addition, when the guide portion 29b of the crawler guide 29 is worn by sliding contact with the crawler shoe 13a, the crawler guide 29 can be easily removed and replaced by removing the bolt 30. Furthermore, since the mounting portion 29a of the crawler guide 29 is positioned by the respective recesses 27a and 28a, the crawler guide 29 can be easily and reliably attached to a predetermined position.

図６及び図７は、本発明の他の形態例を示すもので、第１形態例と同様の構成要素を示すものには、同一の符号をそれぞれ付して、その詳細な説明は省略する。図６は、本発明の第２形態例を示すもので、本形態例のクローラガイド３２は、取付部３２ａの一端部からクローラシュー側に突出する第１ガイド部３２ｂと、取付部３２ａの一端部から反クローラシュー側に突出する第２ガイド部３２ｃとを備えた断面Ｔ字状に形成されている。   6 and 7 show another embodiment of the present invention, and the same reference numerals are given to components showing the same components as in the first embodiment, and the detailed description will be omitted. . FIG. 6 shows a second embodiment of the present invention, and the crawler guide 32 of this embodiment is a first guide portion 32b projecting from the one end of the attachment portion 32a toward the crawler shoe, and one end of the attachment portion 32a. It has a T-shaped cross section including a second guide portion 32c projecting from the portion to the side opposite to the crawler shoe.

本形態例のクローラガイド３２は新品時には、図６の車体外側のブラケット部材２８に取り付けたものに示されるように、第１ガイド部３２ｂをクローラシュー１３ａ側に突出させ、第２ガイド部３２ｃをブラケット部材２８の車体内側の側面２８ｂに沿って下方に延出するように、取付部３２ａを凹部２８ａに配置し、ボルト３０により凹部２８ａに取り付ける。また、クローラシュー１３ａとの摺接により、第１ガイド部３２ｂが摩耗した際には、ボルト３０を取り外すことによりクローラガイド３２を凹部２８ａから取り外し、車体内側のブラケット部材２７に取り付けたものに示されるように、第１ガイド部２２ｂと第２ガイド部３２ｃとを上下方向に反転させ、第２ガイド部３２ｃをクローラシュー１３ａ側に突出させ、第１ガイド部３２ｂをブラケット部材２７の車体内側の側面２７ｂに沿って下方に延出するように、取付部３２ａを凹部２７ａに配置し、ボルト３０により再度取り付ける。本形態例は、これによりクローラガイド３２の使用期間を長くすることができ、コストの削減を図ることができる。   When the crawler guide 32 of this embodiment is new, as shown in FIG. 6 attached to the bracket member 28 outside the vehicle body, the first guide portion 32b is made to project toward the crawler shoe 13a side, and the second guide portion 32c is The mounting portion 32 a is disposed in the recess 28 a so as to extend downward along the side surface 28 b inside the vehicle body of the bracket member 28, and is attached to the recess 28 a by the bolt 30. Also, when the first guide portion 32b is worn by sliding contact with the crawler shoe 13a, the crawler guide 32 is removed from the recess 28a by removing the bolt 30, and is shown in the one attached to the bracket member 27 inside the vehicle body. The first guide portion 22b and the second guide portion 32c are vertically inverted so that the second guide portion 32c protrudes toward the crawler shoe 13a, and the first guide portion 32b is disposed on the inner side of the bracket member 27 in the vehicle body. The mounting portion 32 a is disposed in the recess 27 a so as to extend downward along the side surface 27 b, and is reattached with the bolt 30. In this embodiment, the usage period of the crawler guide 32 can thereby be extended, and the cost can be reduced.

図７は、本発明の第３形態例を示すもので、本形態例のクローラガイド３３は、取付部３３ａの一端部から上方に突出するガイド部３３ｂが設けられた断面Ｌ字状に形成されるとともに、高さ調整用のシム板３４を備え、シム板３４には、ボルト３０を挿通させる通孔３４ａが形成されている。   FIG. 7 shows a third embodiment of the present invention, and the crawler guide 33 of this embodiment is formed in an L-shaped cross section provided with a guide portion 33b projecting upward from one end of the attachment portion 33a. The shim plate 34 is provided with a shim plate 34 for height adjustment, and the shim plate 34 is formed with a through hole 34 a through which the bolt 30 is inserted.

本形態例のクローラガイド３３は新品時には、図７の車体外側のブラケット部材２８に取り付けたものに示されるように、車体外側に配置されたブラケット部材２８の凹部２８ａに取付部３３ａを収容し、取付部３３ａの上面にシム板３４を載置した状態でボルト３０を、通孔３４ａ及び取付部３３ａに形成したボルト挿通孔３３ｃに挿通し、雌ねじ孔２８ｃに螺着させて凹部２８ａに取り付ける。また、クローラシュー１３ａとの摺接により、ガイド部３３ｂが摩耗した際には、ボルト３０を取り外してクローラガイド３３を凹部２８ａから取り外し、車体内側のブラケット部材２７に取り付けたものに示されるように、凹部２７ａの底部と取付部３３ａとの間にシム板３４を介装した状態で、ボルト３０を、ボルト挿通孔３３ｃ及び通孔３４ａに挿通し、雌ねじ孔２７ｃに螺着させて凹部２７ａに再度取り付ける。本形態例は、これにより、第２形態例と同様に、クローラガイド３３の使用期間を長くすることができ、コストの削減を図ることができる。   When the crawler guide 33 of this embodiment is new, as shown in FIG. 7 attached to the bracket member 28 outside the vehicle body, the mounting portion 33a is accommodated in the recess 28a of the bracket member 28 disposed outside the vehicle body, With the shim plate 34 mounted on the upper surface of the mounting portion 33a, the bolt 30 is inserted into the bolt insertion hole 33c formed in the through hole 34a and the mounting portion 33a, screwed into the female screw hole 28c, and mounted in the recess 28a. In addition, when the guide portion 33b is worn due to the sliding contact with the crawler shoe 13a, the bolt 30 is removed, the crawler guide 33 is removed from the recess 28a, and as shown in FIG. With the shim plate 34 interposed between the bottom of the recess 27a and the mounting portion 33a, the bolt 30 is inserted through the bolt insertion hole 33c and the through hole 34a and screwed into the female screw hole 27c to fit the recess 27a. Reinstall it. In this embodiment, as in the second embodiment, the usage period of the crawler guide 33 can be extended, and the cost can be reduced.

尚、本発明は上述の形態例に限るものではなく、ブラケット部材は、下部走行体の大きさに応じて、走行フレームに適宜設ければよく、凹部の形状も任意である。さらに、本発明の下部走行体は、杭打機に用いられるものに限らず、各種建設機械に適用可能である。   The present invention is not limited to the embodiment described above, and the bracket member may be appropriately provided on the traveling frame according to the size of the lower traveling body, and the shape of the recess is also arbitrary. Furthermore, the undercarriage of the present invention is applicable not only to what is used for a pile driving machine but to various construction machines.

１１…杭打機、１２…走行フレーム、１２ａ…サイドフレーム、１２ｂ…開口部、１２ｃ…中央開口部、１３…クローラ、１３ａ…クローラシュー、１３ｂ…係合突部、１４…下部走行体、１５…上部旋回体、１６…リーダ、１７…フロントジャッキ、１８…リーダブラケット、１９…バックステー、２０…リアジャッキ、２１…カウンタウエイト、２２…アクスル、２３…シリンダ、２４…スプロケットホイール、２５…アイドラホイール、２６…転輪、２７，２８…ブラケット部材、２７ａ，２８ａ…凹部、２７ｂ，２８ｂ…側面、２７ｃ，２８ｃ…雌ねじ孔、２９…クローラガイド、２９ａ…取付部、２９ｂ…ガイド部、２９ｃ…ボルト挿通孔、３０…ボルト、３１…リンクピン、３２…クローラガイド、３２ａ…取付部、３２ｂ…第１ガイド部、３２ｃ…第２ガイド部、３３…クローラガイド、３３ａ…取付部、３３ｂ…ガイド部、３３ｃ…ボルト挿通孔、３４…シム板、３４ａ…通孔 11: pile driving machine, 12: running frame, 12a: side frame, 12b: opening, 12c: central opening, 13: crawler, 13a: crawler shoe, 13b: engaging projection, 14: lower traveling body, 15 ... Upper revolving body, 16 ... Leader ... 17 ... Front jack, 18 ... Leader bracket, 19 ... Backstay, 20 ... Rear jack, 21 ... Counterweight, 22 ... Axle, 23 ... Cylinder, 24 ... Sprocket wheel, 25 ... Idler Wheels 26 Roller wheels 27 28 Bracket members 27a 28a Recesses 27b 28b Sides 27c 28c Female screw holes 29 Crawler guides 29a Mounting portions 29b Guide portions 29c Bolt insertion hole, 30: bolt, 31: link pin, 32: crawler guide, 32a: mounting portion, 32b: first Guide portion, 32c ... second guide portion, 33 ... crawler guide, 33a ... attachment portion, 33b ... guide portion, 33c ... bolt insertion hole, 34 ... shim plate, 34a ... through hole

Claims (2)

車体前後方向に延びる左右一対の走行フレームの一端部に駆動輪を、他端部に従動輪をそれぞれ設け、該従動輪と前記駆動輪とに、複数のクローラシューを無端状に連結して形成したクローラを掛け回すとともに、前記走行フレームの上部に、前記クローラシューの移動をガイドするクローラガイドを突設した建設機械の下部走行体において、
前記走行フレームの上部に、前記クローラガイドを取り付ける凹部を上面に備えたブラケット部材を取り付け、前記クローラガイドは、前記凹部内に収容される取付部と、該取付部から突出して前記クローラシューの移動をガイドするガイド部とを備え、前記取付部は、前記凹部の底部にボルトにて着脱可能に取り付けられ、
前記凹部は、前記ブラケット部材の側面に開口して形成され、前記クローラガイドは、前記取付部の一端部から前記クローラシュー側に突出する第１ガイド部と、前記取付部の一端部から反クローラシュー側に突出する第２ガイド部とを備えた断面Ｔ字状に形成され、前記第１ガイド部を前記クローラシューに当接させるとともに、第２ガイド部を前記クローラガイドの前記凹部が開口した側面に当接させた状態で、前記取付部を前記凹部に取り付け、前記第１ガイド部が摩耗した際には、前記取付部を前記凹部から取り外し、前記第１ガイド部と前記第２ガイド部とを上下方向に反転させて前記凹部に取り付け可能としたことを特徴とする建設機械の下部走行体。 A driving wheel is provided at one end of a pair of left and right traveling frames extending in the longitudinal direction of the vehicle body, and a driven wheel is provided at the other end, and a plurality of crawler shoes are endlessly connected to the driven wheel and the driving wheel. In a lower traveling body of a construction machine in which a crawler guide for guiding the movement of the crawler shoe is protrusively provided on the upper portion of the traveling frame while the crawler is put on and wound.
Attach a bracket member provided on the upper surface with the recess for attaching the crawler guide on the upper surface of the traveling frame, and the crawler guide includes an attaching portion accommodated in the recess and a movement of the crawler shoe projecting from the attaching portion And a guide portion for guiding the mounting portion, the mounting portion is detachably mounted to the bottom of the recess with a bolt ,
The concave portion is formed to open at a side surface of the bracket member, and the crawler guide is a first guide portion projecting from one end of the mounting portion toward the crawler shoe, and a crawler crawler from one end of the mounting portion The guide is formed in a T-shaped cross section having a second guide portion projecting to the shoe side, and the first guide portion is brought into contact with the crawler shoe, and the concave portion of the crawler guide is opened in the second guide portion. The attachment portion is attached to the recess in a state of being in contact with the side surface, and when the first guide portion is worn, the attachment portion is removed from the recess, and the first guide portion and the second guide portion And the upper traveling direction of the lower traveling body of the construction machine characterized in that the lower traveling body of the construction machine can be attached to the recess . 車体前後方向に延びる左右一対の走行フレームの一端部に駆動輪を、他端部に従動輪をそれぞれ設け、該従動輪と前記駆動輪とに、複数のクローラシューを無端状に連結して形成したクローラを掛け回すとともに、前記走行フレームの上部に、前記クローラシューの移動をガイドするクローラガイドを突設した建設機械の下部走行体において、A driving wheel is provided at one end of a pair of left and right traveling frames extending in the longitudinal direction of the vehicle body, and a driven wheel is provided at the other end, and a plurality of crawler shoes are endlessly connected to the driven wheel and the driving wheel. In a lower traveling body of a construction machine in which a crawler guide for guiding the movement of the crawler shoe is protrusively provided on the upper portion of the traveling frame while the crawler is put on and wound.
前記走行フレームの上部に、前記クローラガイドを取り付ける凹部を上面に備えたブラケット部材を取り付け、前記クローラガイドは、前記凹部内に収容される取付部と、該取付部から突出して前記クローラシューの移動をガイドするガイド部とを備え、前記取付部は、前記凹部の底部にボルトにて着脱可能に取り付けられ、Attach a bracket member provided on the upper surface with the recess for attaching the crawler guide on the upper surface of the traveling frame, and the crawler guide includes an attaching portion accommodated in the recess and a movement of the crawler shoe projecting from the attaching portion And a guide portion for guiding the mounting portion, the mounting portion is detachably mounted to the bottom of the recess with a bolt,
前記クローラガイドは、前記取付部の一端部に前記ガイド部が突設された断面Ｌ字状に形成され、取付部の上面に高さ調整用のシム板を載置した状態で前記凹部に取り付けられ、前記ガイド部が摩耗した際には、前記取付部を前記凹部から取り外し、前記凹部の底部と前記取付部との間に前記シム板を介装した状態で、前記凹部に取り付け可能としたことを特徴とする建設機械の下部走行体。The crawler guide is formed in an L-shaped cross section in which the guide portion protrudes at one end of the attachment portion, and is attached to the recess in a state in which a height adjustment shim plate is mounted on the upper surface of the attachment portion When the guide portion is worn, the mounting portion is removed from the recess, and the shim plate can be attached to the recess with the shim plate interposed between the bottom of the recess and the mounting portion. The lower traveling body of a construction machine characterized by that.
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