JPH077400Y2 - Backhoe - Google Patents
BackhoeInfo
- Publication number
- JPH077400Y2 JPH077400Y2 JP1988169248U JP16924888U JPH077400Y2 JP H077400 Y2 JPH077400 Y2 JP H077400Y2 JP 1988169248 U JP1988169248 U JP 1988169248U JP 16924888 U JP16924888 U JP 16924888U JP H077400 Y2 JPH077400 Y2 JP H077400Y2
- Authority
- JP
- Japan
- Prior art keywords
- hose
- pair
- bucket cylinder
- arm
- boom
- 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.)
- Expired - Lifetime
Links
Landscapes
- Component Parts Of Construction Machinery (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、トラクタ等の車輌に装着されるバックホーに
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a backhoe mounted on a vehicle such as a tractor.
（従来の技術） 例えばトラクタに装着されるバックホーには、ブームの
先端に左右一対の補強部材を介してアームを左右方向の
支軸廻りに回動自在に枢支し、アームの先端にバケット
を左右方向の支軸廻りに回動自在に枢支し、アームにバ
ケットを回動操作するためのバケットシリンダを設けた
ものがある。(Prior Art) For example, in a backhoe mounted on a tractor, an arm is rotatably pivoted around a support shaft in the left-right direction at a tip of a boom via a pair of left and right reinforcing members, and a bucket is attached to a tip of the arm. There is one in which a bucket cylinder for pivoting a bucket around the support shaft in the left-right direction and for rotating the bucket is provided on the arm.
ところが、この種の従来のバックホーでは、バケットシ
リンダのホースを、トラクタ車体側からブーム内を沿わ
して補強部材近傍を通ってバケットシリンダに連結して
おり、このホースのブームからバケットシリンダとの間
は、ブームに対してアームの回動を許す必要から、大き
くたるませた状態にしていた。However, in the conventional backhoe of this type, the hose of the bucket cylinder is connected to the bucket cylinder along the inside of the boom from the tractor body side, passing through the vicinity of the reinforcing member, and between the boom of the hose and the bucket cylinder. Had a large slack because it was necessary to allow the arm to rotate with respect to the boom.
（考案が解決しようとする課題） 従って、従来の場合、ブームに対してアームを回動操作
した際に、バケットシリンダのホースがブームとアーム
との間の中途部で、大きく揺動し、この部分でのホース
の折曲や補強部材との干渉によってホースが損傷すると
いう問題があった。(Problems to be solved by the invention) Therefore, in the conventional case, when the arm is operated to rotate with respect to the boom, the hose of the bucket cylinder swings greatly at a midpoint between the boom and the arm. There is a problem that the hose is damaged due to the bending of the hose at the part and the interference with the reinforcing member.
本考案は上記問題点に鑑み、バケットシリンダのホース
がアームの回動操作によって損傷するのを防止し得るよ
うにしたものである。SUMMARY OF THE INVENTION In view of the above problems, the present invention can prevent the hose of the bucket cylinder from being damaged by the rotating operation of the arm.
（課題を解決するための手段） この技術的課題を解決する本考案の技術的手段は、ブー
ム25の先端に左右一対の補強部材27を介してアーム29が
左右方向の支軸28廻りに回動自在に枢支され、アーム29
の先端にバケット32が左右方向の支軸31廻りに回動自在
に枢支され、バケット32を回動操作するためのバケット
シリンダ33が設けられたバックホーにおいて、 前記一対の補強部材27を連結する連結補強具40が、前記
支軸28とは別個に設けられ、連結補強具40の端部は一対
の補強部材27から外方突出され、バケットシリンダ33の
ホース44が中途部で分割され、該ホース44のトラクタ車
体１側の分割端部44aが、一対の補強部材27間に位置す
る連結補強具40の中央側に連結されると共に、ホース44
のバケットシリンダ33側の分割端部44bが、一対の補強
部材27の外側に位置する連結補強具40の外端部に連結さ
れ、連結補強具40に、ホース44のトラクタ車体１側の分
割端部44aとホース44のバケットシリンダ33側の分割端
部44bとを連結する通孔41が設けられて、前記連結補強
具40がバケットシリンダ33のホース44の中途部に配管と
して介在され、ホース44の連結補強具40よりもトラクタ
車体１側が、ブーム25の底壁25aに沿って配置され、ホ
ース44の連結補強具40よりもバケットシリンダ33側が、
補強部材27及びアーム29の外側に配置されている点にあ
る。(Means for Solving the Problem) In the technical means of the present invention for solving this technical problem, an arm 29 is rotated around a support shaft 28 in the left-right direction via a pair of left and right reinforcing members 27 at the tip of a boom 25. Freely pivoted, arm 29
In a backhoe in which a bucket 32 is rotatably pivoted around a support shaft 31 in the left-right direction at the tip of, and a bucket cylinder 33 for rotating the bucket 32 is provided, the pair of reinforcing members 27 are connected. A connecting reinforcing member 40 is provided separately from the support shaft 28, an end portion of the connecting reinforcing member 40 is projected outward from the pair of reinforcing members 27, and the hose 44 of the bucket cylinder 33 is divided at an intermediate portion. The split end portion 44a of the hose 44 on the tractor body 1 side is connected to the center side of the connecting and reinforcing tool 40 located between the pair of reinforcing members 27, and the hose 44
The bucket cylinder 33 side divided end portion 44b is connected to the outer end portion of the connecting stiffener 40 located outside the pair of reinforcing members 27, and the hose 44 split end on the tractor vehicle body 1 side is connected to the connecting stiffener 40. A through hole 41 for connecting the portion 44a and the divided end portion 44b of the hose 44 on the bucket cylinder 33 side is provided, and the connecting reinforcement 40 is interposed as a pipe in the middle portion of the hose 44 of the bucket cylinder 33. The tractor body 1 side of the connecting reinforcement 40 is arranged along the bottom wall 25a of the boom 25, and the bucket cylinder 33 side of the hose 44 is larger than the connecting reinforcement 40.
It is located outside the reinforcing member 27 and the arm 29.
（作用） 連結補強具40によって補強部材27乃至ブーム25を補強で
きる。また、ホース44がアーム29の回動支点の近傍で固
定された状態になり、ブーム25に対してアーム29を回動
操作した際に、ホース44の中途部が大きく揺動しなくな
り、ホース44の折曲や補強部材27との干渉を効果的に防
止できる。(Operation) The reinforcing member 27 to the boom 25 can be reinforced by the connecting reinforcing member 40. In addition, the hose 44 is fixed near the rotation fulcrum of the arm 29, and when the arm 29 is rotated with respect to the boom 25, the middle part of the hose 44 does not swing greatly, and the hose 44 The bending and interference with the reinforcing member 27 can be effectively prevented.
（実施例） 以下、図示の実施例について本考案を詳述すると、第１
図において、１はトラクタ車体で、エンジン２、ミッシ
ョンケース３等からなり、前輪４及び及び後輪５を有す
る。６はボンネット、７は運転席、８はハンドルであ
る。(Embodiment) The present invention will be described in detail below with reference to the illustrated embodiment.
In the figure, reference numeral 1 denotes a tractor vehicle body, which includes an engine 2, a transmission case 3, and the like, and has front wheels 4 and rear wheels 5. 6 is a hood, 7 is a driver's seat, and 8 is a steering wheel.
11はトラクタ車体１の前部に装着されたフロントローダ
で、左右一対のマスト12、各マスト12から前方に突出す
る左右一対のブレース13、各マスト12の上端に枢着され
た左右一対のブーム14、各ブーム14を昇降させるための
左右一対のブームシリンダ15、ブーム14の先端に枢着さ
れたバケット16、バケット16を回動させるための左右一
対のバケットシリンダ17等から成る。各マスト12はトラ
クタ車体１両側のマスト取付台18に着脱自在に取付けら
れ、また各ブレース13の前端はエンジン２の両端から前
方に突出する前車軸フレーム19に着脱自在に取付けられ
ている。Reference numeral 11 denotes a front loader mounted on the front part of the tractor body 1, a pair of left and right masts 12, a pair of left and right braces 13 protruding forward from each mast 12, and a pair of left and right booms pivotally attached to the upper ends of the masts 12. 14, a pair of left and right boom cylinders 15 for raising and lowering each boom 14, a bucket 16 pivotally attached to the tip of the boom 14, a pair of left and right bucket cylinders 17 for rotating the bucket 16, and the like. Each mast 12 is detachably attached to a mast mount 18 on both sides of the tractor vehicle body 1, and the front end of each brace 13 is detachably attached to a front axle frame 19 protruding forward from both ends of the engine 2.
第１図及び第２図において、20はトラクタ車体１の後方
に装着されたバックホーで、トラクタ車体１に着脱自在
な機枠21、機枠21に縦軸廻りに左右揺動可能に枢着され
た揺動枠22、揺動枠22に補強部材23を介して左右方向の
支軸24廻りに回動自在に枢支されたブーム25、ブーム25
を昇降させるためのブームシリンダ26、ブーム25の先端
に左右一対の補強部材27,37を介して左右方向の支軸28
廻りに回動自在に枢支されたアーム23、アーム29を屈伸
させるためのアームシリンダ30、アーム29の先端に左右
方向の支軸31廻りに回動自在に枢支されたバケット32、
バケット32を回動させるためのバケットシリンダ33、機
枠21に取付けられたコントロールボックス34及び運転席
35等から成る。In FIGS. 1 and 2, reference numeral 20 denotes a backhoe mounted to the rear of the tractor vehicle body 1, and is attached to the tractor vehicle body 1 so as to be freely attachable / detachable, and is pivotally attached to the machine frame 21 so as to be swingable right and left around a vertical axis. The swing frame 22, the boom 25 pivotally supported on the swing frame 22 through a reinforcing member 23 so as to be rotatable around a support shaft 24 in the left-right direction,
A boom cylinder 26 for moving up and down, and a support shaft 28 in the left-right direction at the tip of the boom 25 via a pair of left and right reinforcing members 27, 37.
An arm 23 rotatably pivoted around, an arm cylinder 30 for bending and stretching the arm 29, a bucket 32 rotatably pivoted around a support shaft 31 in the left-right direction at the tip of the arm 29,
Bucket cylinder 33 for rotating bucket 32, control box 34 attached to machine frame 21, and driver's seat
It consists of 35 mag.
機枠21には左右一対のアウトリガー装置36が設けられて
いる。補強部材23,27はブーム25に固着され、補強部材3
7はアーム29に固着されている。The machine frame 21 is provided with a pair of left and right outrigger devices 36. The reinforcing members 23 and 27 are fixed to the boom 25, and the reinforcing member 3
7 is fixed to the arm 29.
前記一対の補強部材27の中央部間には左右方向の連結補
強具40が連結され、この連結補強具40には左右一対の通
孔41が設けられ、通孔41の外端部は盲栓42によって着脱
自在に塞がれている。A left and right connecting reinforcing member 40 is connected between the central portions of the pair of reinforcing members 27, and a left and right pair of through holes 41 are provided in the connecting reinforcing member 40, and an outer end portion of the through hole 41 is a blind plug. It is detachably blocked by 42.
44はバケットシリンダ33の左右一対のホースで、該各ホ
ース44の一端はバケットシリンダ33に連結され、他端は
トラクタ車体１側の油圧装置に連結されている。各ホー
ス44はトラクタ車体１側からブーム25の底壁25aに沿っ
てバケットシリンダ33側に導かれ、ホース44の中途部は
補強部材27の位置で２分割され、そのトラクタ車体１側
の分割端部44aは連結金具45を介して連結補強具40の中
央側に螺合連結され、各分割端部44aは、一対の通孔41
の内端部に夫々連通されている。また、ホース44のシリ
ンダ33側の分割端部44bは、連結金具46,47を介して連結
補強具40の外端部に螺合連結され、トラクタ車体１側の
分割端部44bは、一対の通孔41の外端部に夫々連通され
ている。而して一対の各ホース44が中途部で分割され
て、該中途部に補強軸40が配管として介在されている。Reference numeral 44 denotes a pair of left and right hoses of the bucket cylinder 33. One end of each hose 44 is connected to the bucket cylinder 33, and the other end is connected to a hydraulic device on the tractor vehicle body 1 side. Each hose 44 is guided from the tractor vehicle body 1 side to the bucket cylinder 33 side along the bottom wall 25a of the boom 25, and the middle portion of the hose 44 is divided into two at the position of the reinforcing member 27, and the divided end of the tractor vehicle body 1 side. The portion 44a is screwed and coupled to the center side of the coupling / reinforcing tool 40 via a coupling fitting 45, and each split end portion 44a has a pair of through holes 41.
Are communicated with the inner end of each. The split end portion 44b of the hose 44 on the cylinder 33 side is screwed and coupled to the outer end portion of the coupling / reinforcing tool 40 via the coupling fittings 46, 47, and the split end portion 44b on the tractor vehicle body 1 side has a pair of The outer ends of the through holes 41 communicate with each other. Thus, the pair of hoses 44 are divided at the middle portion, and the reinforcing shaft 40 is interposed as a pipe in the middle portion.
前記補強部材23の側壁23a間には、第４図及び第５図に
示すように取付板49を介してパイプ50が連結され、この
パイプ50の連結によってブーム14のねじりを防止すると
共に、このパイプ50を、バケットシリンダ33のホース44
及びブームシリンダ26のホース51等を補強部材23の底壁
23bとの間で保持するホースの押えガイドに兼用してい
る。A pipe 50 is connected between the side walls 23a of the reinforcing member 23 through a mounting plate 49 as shown in FIGS. 4 and 5, and the connection of the pipe 50 prevents the boom 14 from being twisted. Pipe 50, hose 44 of bucket cylinder 33
And the hose 51, etc. of the boom cylinder 26 to the bottom wall of the reinforcing member 23.
It is also used as a hose retainer guide to hold between 23b.
（考案の効果） 本考案によれば、バケットシリンダ33のホース44が中途
部で分割され、該ホース44のトラクタ車体１側の分割端
部44aが、一対の補強部材27間に位置する連結補強具40
の中央側に連結されると共に、ホース44のバケットシリ
ンダ33側の分割端部44bが、一対の補強部材27の外側に
位置する連結補強具40の外端部に連結され、連結補強具
40に、ホース44のトラクタ車体１側の分割端部44aとホ
ース44のバケットシリンダ33側の分割端部44bとを連結
する通孔41が設けられて、前記連結補強具40がバケット
シリンダ33のホース44の中途部に配管として介在され、
ホース44の連結補強具44よりもトラクタ車体１側が、ブ
ーム25の底壁25aに沿って配置され、ホース44の連結補
強具40よりもバケットシリンダ33側が、補強部材27及び
アーム29の外側に配置されているので、連結補強具40に
よって一対の補強部材27乃至ブーム25を補強できるだけ
でなく、ホース44がアーム29の回動支点の近傍で固定さ
れた状態になり、このためホース44を補強部材27の位置
で大きくたるませる必要もなくなることもあって、ブー
ム25に対してアーム29を回動操作した際に、ホース44の
中途部が大きく揺動して、ホース44が折曲したり補強部
材27と干渉するのを効果的に防いで、ホース44の損傷を
極力防止し得る。しかも、一対の補強部材27を連結する
連結補強具40が、アーム29の回動支点となる支軸28とは
別個に設けられているので、連結補強具40をアーム29の
回動支点とする必要がなく、連結補強具40の構造が複雑
になったり、連結補強具40がアーム29や補強部材27との
摺動等によって損傷を生じて油漏れを生じたりする恐れ
もなく、また油漏れを防止するために連結補強具40を必
要以上に頑丈に形成したりする必要もなくなる。(Effect of the Invention) According to the present invention, the hose 44 of the bucket cylinder 33 is divided in the middle, and the divided end 44a of the hose 44 on the side of the tractor body 1 is connected and reinforced between the pair of reinforcing members 27. Ingredient 40
Of the hose 44, the divided end 44b of the hose 44 on the bucket cylinder 33 side is connected to the outer end of the connecting stiffener 40 located outside the pair of reinforcing members 27.
40 is provided with a through hole 41 for connecting the divided end portion 44a of the hose 44 on the tractor vehicle body 1 side and the divided end portion 44b of the hose 44 on the bucket cylinder 33 side. Interposed as a pipe in the middle of the hose 44,
The tractor vehicle body 1 side of the hose 44 is arranged along the bottom wall 25a of the boom 25, and the bucket cylinder 33 side of the hose 44 is arranged outside the reinforcing member 27 and the arm 29. Therefore, not only the pair of reinforcing members 27 to the boom 25 can be reinforced by the connecting reinforcing member 40, but also the hose 44 is fixed in the vicinity of the pivot fulcrum of the arm 29. When the arm 29 is rotated with respect to the boom 25, the middle part of the hose 44 swings greatly and the hose 44 bends or reinforces because the slack at the position of 27 is not necessary. It is possible to effectively prevent the interference with the member 27 and prevent the hose 44 from being damaged as much as possible. Moreover, since the connecting reinforcement 40 for connecting the pair of reinforcing members 27 is provided separately from the support shaft 28 serving as the rotation support of the arm 29, the connection reinforcement 40 serves as the rotation support of the arm 29. There is no need to complicate the structure of the connecting reinforcement 40, and there is no risk that the connecting reinforcement 40 will be damaged by sliding with the arm 29 or the reinforcing member 27 and cause oil leakage. It is also unnecessary to form the connecting reinforcing member 40 to be stronger than necessary in order to prevent this.
図面は本考案の一実施例を示し、第１図は側面図、第２
図はブーム及びアーム部分の平断面図、第３図はブーム
先端部分の斜視図、第４図は補強部材の斜視図、第５図
は同底断面図である。 14……ブーム、20……バックホー、25……ブーム、27…
…補強部材、28……支軸、29……アーム、31……支軸、
32……バケット、33……バケットシリンダ、40……連結
補強具、44……ホース。The drawing shows one embodiment of the present invention, FIG. 1 is a side view, and FIG.
FIG. 3 is a plan sectional view of a boom and an arm portion, FIG. 3 is a perspective view of a boom tip portion, FIG. 4 is a perspective view of a reinforcing member, and FIG. 14 …… boom, 20 …… backhoe, 25 …… boom, 27…
… Reinforcement member, 28 …… Support shaft, 29 …… Arm, 31 …… Support shaft,
32 …… Bucket, 33 …… Bucket cylinder, 40 …… Coupling reinforcement, 44 …… Hose.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 河村 正一郎 大阪府堺市石津北町64番地 久保田鉄工株 式会社堺製造所内 (72)考案者 中尾 正 大阪府堺市石津北町64番地 久保田鉄工株 式会社堺製造所内 (56)参考文献 実開 昭55−126362（ＪＰ，Ｕ) 実開 昭63−56752（ＪＰ，Ｕ) 実開 昭60−91643（ＪＰ，Ｕ) 実開 昭55−131362（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Shoichiro Kawamura, 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd.Sakai Works (72) Tadashi Nakao, 64, Ishizukita-machi, Sakai City, Osaka Prefecture In Sakai Plant (56) References: Actually open 55-126362 (JP, U) Actually open 63-56752 (JP, U) Actually open 60-91643 (JP, U) Actually open 55-131362 (JP, U)
Claims (1)
（27）を介してアーム（29）が左右方向の支軸（28）廻
りに回動自在に枢支され、アーム（29）の先端にバケッ
ト（32）が左右方向の支軸（31）廻りに回動自在に枢支
され、バケット（32）を回動操作するためのバケットシ
リンダ（33）が設けられたバックホーにおいて、 前記一対の補強部材（27）を連結する連結補強具（40）
が、前記支軸（28）とは別個に設けられ、連結補強具
（40）の端部は一対の補強部材（27）から外方突出さ
れ、バケットシリンダ（33）のホース（44）が中途部で
分割され、該ホース（44）のトラクタ車体（１）側の分
割端部（44a）が、一対の補強部材（27）間に位置する
連結補強具（40）の中央側に連結されると共に、ホース
（44）のバケットシリンダ（33）側の分割端部（44b）
が、一対の補強部材（27）の外側に位置する連結補強具
（40）の外端部に連結され、連結補強具（40）に、ホー
ス（44）のトラクタ車体（１）側の分割端部（44a）と
ホース（44）のバケットシリンダ（33）側の分割端部
（44b）とを連結する通孔（41）が設けられて、前記連
結補強具（40）がバケットシリンダ（33）のホース（4
4）の中途部に配管として介在され、ホース（44）の連
結補強具（40）よりもトラクタ車体（１）側が、ブーム
25の底壁（25）に沿って配置され、ホース（44）の連結
補強具（40）よりもバケットシリンダ（33）側が、補強
部材（27）及びアーム（29）の外側に配置されているこ
とを特徴とするバックホー。1. An arm (29) is rotatably supported on the tip of a boom (25) via a pair of left and right reinforcing members (27) around a support shaft (28) in the left-right direction, and the arm (29). A bucket (32) is rotatably pivoted around a support shaft (31) in the left-right direction at the tip of the backhoe, and a bucket cylinder (33) for rotating the bucket (32) is provided in the backhoe. Connection reinforcement tool (40) for connecting a pair of reinforcement members (27)
However, it is provided separately from the support shaft (28), the end portion of the coupling reinforcing member (40) is projected outward from the pair of reinforcing members (27), and the hose (44) of the bucket cylinder (33) is halfway. And a split end portion (44a) of the hose (44) on the side of the tractor vehicle body (1) is connected to the center side of the connecting and reinforcing tool (40) located between the pair of reinforcing members (27). Together with the split end (44b) of the hose (44) on the bucket cylinder (33) side.
Are connected to the outer ends of the connecting stiffeners (40) located outside the pair of reinforcing members (27), and the connecting stiffeners (40) are connected to the split ends of the hose (44) on the tractor vehicle body (1) side. The bucket cylinder (33) is provided with a through hole (41) for connecting the portion (44a) and the divided end (44b) of the hose (44) on the bucket cylinder (33) side. Hose (4
4) The boom is located in the middle of the hose (44) on the tractor body (1) side of the hose (44) connecting reinforcement (40).
The hose (44) is arranged along the bottom wall (25) of the hose (44), and the bucket cylinder (33) side of the hose (44) is arranged outside the reinforcing member (27) and the arm (29). A backhoe that is characterized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988169248U JPH077400Y2 (en) | 1988-12-27 | 1988-12-27 | Backhoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988169248U JPH077400Y2 (en) | 1988-12-27 | 1988-12-27 | Backhoe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0289045U JPH0289045U (en) | 1990-07-13 |
| JPH077400Y2 true JPH077400Y2 (en) | 1995-02-22 |
Family
ID=31459134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988169248U Expired - Lifetime JPH077400Y2 (en) | 1988-12-27 | 1988-12-27 | Backhoe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH077400Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55126362U (en) * | 1979-02-28 | 1980-09-06 | ||
| JPS6356752U (en) * | 1986-09-26 | 1988-04-15 |
-
1988
- 1988-12-27 JP JP1988169248U patent/JPH077400Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0289045U (en) | 1990-07-13 |
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