JPS61216938A - Safety device for rotation of double-slewing back hoe - Google Patents
Safety device for rotation of double-slewing back hoeInfo
- Publication number
- JPS61216938A JPS61216938A JP5633485A JP5633485A JPS61216938A JP S61216938 A JPS61216938 A JP S61216938A JP 5633485 A JP5633485 A JP 5633485A JP 5633485 A JP5633485 A JP 5633485A JP S61216938 A JPS61216938 A JP S61216938A
- Authority
- JP
- Japan
- Prior art keywords
- machine
- boom
- slewing
- aircraft
- prime mover
- 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.)
- Pending
Links
- 238000009412 basement excavation Methods 0.000 claims description 22
- 230000002146 bilateral effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
Landscapes
- Component Parts Of Construction Machinery (AREA)
- Operation Control Of Excavators (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（イ） 産業上の利用分野
この発明は、二重旋回バックホーの旋回安全装置に関す
る。Detailed Description of the Invention 3. Detailed Description of the Invention (a) Field of Industrial Application This invention relates to a swing safety device for a double swing backhoe.
（０） 従来の技術
従来、二重旋回バックホーは、走行機体の上方に、原動
機部を立設した下部旋回機体を左右回動自在に載設し、
更に、掘削作業部を支持した上部旋回機体を下部旋回機
体の上方に左右旋回自在にａ段しそ、掘削作業部に複雑
な作動軌跡を付与して、複雑な作業、あるいは狭隘場所
ぞの作業を可能にしていた。(0) Conventional technology Conventionally, a double-swinging backhoe has a lower swinging machine with a prime mover installed above the traveling machine so as to be rotatable left and right.
Furthermore, the upper revolving machine that supports the excavating work part can be freely swiveled left and right above the lower revolving machine in the A stage, giving the excavating work part a complex operating trajectory to perform complex work or work in narrow spaces. It was possible.
（ハ） 発明が解決しようとする問題点しかし、上記の
利点を有する半面、掘削作業部を低位置にしたままで、
上部旋回機体を大きく旋回させると、同作業部が、下部
旋回機体に立設した原動機部に激突してこれらを破損さ
せるおそれがあり、運転には多大の注意と熟練を必要と
してぃた。(c) Problems to be solved by the invention However, while having the above advantages, the excavation work part remains at a low position.
If the upper revolving fuselage were to make a large turn, there was a risk that the working section would collide with the prime mover installed on the lower revolving fuselage and damage them, so great care and skill was required for operation.
（ニ） 問題点を解決するための手段
この発明では、走行機体の上方に、原動機部を配設した
下部旋回機体を左右回動自在に載設し、更に同機体のＬ
方に、上部旋回機体を左右回動自在に載設し、同機体に
掘削作業部基端のブームを上下回動自在に枢支した二重
旋回バックホーにおいて、ブームの上部旋回機体に対す
る上下角度を検出するための上下角センサー、上部旋回
機体の下部旋回機体のに対する左右角度を検出する左右
角センサーを配設し、各センサーからの出力により、掘
削作業部の作動範囲を制限すべく構成してなる二重旋回
バックホーの旋回安全装置を提供せんとするものである
。(d) Means for Solving the Problems In this invention, a lower swinging aircraft equipped with a prime mover section is mounted above the traveling aircraft so as to be rotatable left and right, and the L of the aircraft is
On the other hand, in a double-swing backhoe in which the upper revolving body is mounted so that it can freely rotate left and right, and the boom at the base end of the excavation work section is pivoted to the same body so that it can freely move up and down, the vertical angle of the boom with respect to the upper revolving body is determined. A vertical angle sensor for detecting the vertical angle and a left/right angle sensor for detecting the horizontal angle of the upper rotating machine relative to the lower rotating machine are installed, and the operating range of the excavation work part is limited by the output from each sensor. The present invention aims to provide a swing safety device for a double swing backhoe.
（ホ） 作 用
この発明では、上下角センサーにより掘削作業部の上下
位置を検出して、同位置が原動機部等下部旋回機体に立
設した構造物よりも低い場合、左右角センサーで上部旋
回機体の旋回角度を検出し、同センサー出力で掘削作業
部が原動機部等に接触しないよう上部旋回機体の旋回を
自動的に制限している。(e) Operation In this invention, the vertical position of the excavation work part is detected by the vertical angle sensor, and if the same position is lower than the structure installed on the lower swing machine such as the prime mover part, the upper swing position is detected by the left and right angle sensor. The rotation angle of the aircraft is detected, and the sensor output automatically limits the rotation of the upper swinging aircraft to prevent the excavation work section from coming into contact with the prime mover.
（へ） 効 果
この発明によれば、二重旋回バックホーの旋回安全装置
を上記のように構成することにより、掘削作業部の原動
機部等への接触が自動的に回避されて運転が容易となり
、安全性も向上するという効果がある。(F) Effects According to the present invention, by configuring the swing safety device of the double swing backhoe as described above, contact with the prime mover section of the excavating work section is automatically avoided, making operation easier. , which has the effect of improving safety.
（ト） 実施例
本発明の実施例を図面にもとづき詳説すれば、（Ａ）は
二重旋回バックホーを示し、りＯ−ラ走行装置（１）を
装備した走行機体（２）の略中央部に下部旋回基台（３
）を立設し、同基台（３）の上面に下部旋回機体（４）
を左右回動自在に載設し、同機体（４）の上面後部に原
動機部（５）を配設して、同郡（５）を、可及的に円形
に近づけた多角形状の平面形を有し、かつ上側面（５）
−３が略平面状のカバー（５）−１で被覆し、同機体（
４）の前部には上部旋回基台（６）を立設して、同基台
（６）の上面に、上部旋回機体（７）を左右回動自在に
載設し、同機体（７）の左側には運転部（８）、右側に
は、掘削作業部（９）の基端を上下回動自在に支持して
、走行機体（１）に対し、掘削作業部（９）が上部旋回
基台（６）を中心に自転しながら、下部旋回基台（３）
を中心として公転する二重旋回バックホーを構成してい
る。(G) Embodiment The embodiment of the present invention will be described in detail with reference to the drawings. (A) shows a double-swinging backhoe, and shows the approximate center of the traveling body (2) equipped with the roller traveling device (1). The lower swivel base (3
) is erected, and the lower rotating aircraft (4) is installed on the top of the base (3).
is mounted so as to be rotatable left and right, and the prime mover section (5) is placed at the rear of the upper surface of the fuselage (4), making the fuselage (5) as close to a circle as possible in a polygonal planar shape. and an upper surface (5)
-3 is covered with a substantially planar cover (5)-1, and the aircraft (
An upper rotating base (6) is erected on the front part of the aircraft (4), and an upper rotating body (7) is mounted on the upper surface of the base (6) so as to be rotatable left and right. ) on the left side supports the driving part (8), and on the right side supports the base end of the excavation work part (9) so that it can move up and down, so that the excavation work part (9) is attached to the top of the traveling machine (1). While rotating around the rotating base (6), the lower rotating base (3)
It consists of a double revolving backhoe that revolves around.
掘削作業部（９）は、上部旋回機体（７）の右側に立設
したブーム支持体く１０）の前端（１ｏ）−１に、掘削
作業部（９）の基端としてのブーム（１１）の基端（１
１）−１を上下回動自在に枢支し、同ブーム（１１）の
中途部とブーム支持体（１ｏ）の上端との間に介設した
ブーム昇降油圧シリンダ（１２）の伸縮作動により同ブ
ーム（１１）先端（１１）−２を昇降作動せしめ、同先
端（１１）、−２にはアーム（１３）の基端（１３）−
１を上下回動自在に枢支連設し、同アーム（１３）の後
方延設部先端とブーム（１１）中途部との間に介設した
アーム昇降油圧シリンダ（１４）の伸縮作動によりアー
ム（１３）の先端（１３）−２を昇降作動せしめ、同先
端（１３）−２にはバケッ１−（１５）の基端（１５）
−１を上下回動自在に枢支連設し、同基端（１５）−１
のやや下方位置とアーム（１３）上面との間に介設した
パケット回動油圧シリンダ（１５）−の伸縮作動により
パケット（１５）の先端（１５）−２に掘削作動を行わ
せるものである。The excavation work part (9) has a boom (11) as the base end of the excavation work part (9) at the front end (1o)-1 of the boom support 10) installed on the right side of the upper swing body (7). The proximal end of (1
1) -1 is pivoted so that it can move up and down, and the boom is lifted and lowered by the telescopic operation of the boom lifting hydraulic cylinder (12), which is interposed between the middle part of the boom (11) and the upper end of the boom support (1o). The tip (11)-2 of the boom (11) is moved up and down, and the tip (11)-2 is connected to the base end (13)-2 of the arm (13).
1 is pivotally connected so as to be vertically movable, and the arm is moved up and down by the telescopic operation of an arm lifting hydraulic cylinder (14) interposed between the tip of the rear extension part of the arm (13) and the midway part of the boom (11). The tip (13)-2 of (13) is moved up and down, and the tip (13)-2 has the proximal end (15) of bucket 1-(15).
-1 is pivotally connected so that it can move up and down, and the base end (15) -1
The tip (15)-2 of the packet (15) performs an excavation operation by expanding and contracting the packet rotation hydraulic cylinder (15)- interposed between the slightly lower position of the cylinder and the upper surface of the arm (13). .
従って、下部旋回機体（７）上面の原動機部（５）及び
そのカバー（５）−１は掘削作業部（９）の作動圏内に
あるので両者が接触する可能性があり、この接触を防止
するために、掘削作業部（９）の作動範囲を制限すべく
下記のように構成している。Therefore, since the prime mover section (5) on the upper surface of the lower rotating body (7) and its cover (5)-1 are within the operating range of the excavating section (9), there is a possibility that they may come into contact with each other, and this contact must be prevented. Therefore, in order to limit the operating range of the excavation work section (9), the following structure is adopted.
すなわち、ブーム支持体（１０）の前側面の上端よりに
上下角センサー（１６）を配設し、同センサー（１６）
とブーム（１０）上側面との接触を介して、ブーム（１
１）の最上方位置を検出して出力せしめるとともに、上
部旋回機体（７）の下面に左右角センサー（１７）を配
設し、同センサー（１７）と、上部旋回基台（６）の外
周面に設けた突条（１８）との接触を介して、掘削作業
部（９）の回動位置を検出して、同作業部（９）が前方
向位置のとき出力するようにしており、各センサー（１
６）、（１７）の出力が双方ともないとき、すなわち、
ブーム（１８）が最上方位置になく、かつ、掘削作業部
（９）が後方向位置にあるとき、上部旋回機体（７）を
旋回させるための油圧モータ（１９）と、同モータ（１
９）を制御するための油圧制御弁（２０）との間に介設
した油圧ストップ弁（２１）のソレノイド（２１）−１
を消磁してリンターンスプリング（２１）−２の付勢に
より向弁（２１）に戻り作動させて油圧制御弁（２０）
から油圧モータ（１９）への油圧を遮断して上部旋回機
体（７）の旋回作動を停止させるように構成している。That is, the vertical angle sensor (16) is disposed at the upper end of the front side of the boom support (10), and the sensor (16)
and the boom (10) through contact with the upper surface of the boom (10).
In addition to detecting and outputting the highest position of The rotating position of the excavating working part (9) is detected through contact with a protrusion (18) provided on the surface, and an output is output when the working part (9) is in the forward position. Each sensor (1
6) When both outputs of (17) are absent, that is,
When the boom (18) is not in the uppermost position and the excavation work part (9) is in the backward position, the hydraulic motor (19) for rotating the upper swing body (7) and the same motor (1
Solenoid (21)-1 of the hydraulic stop valve (21) interposed between the hydraulic control valve (20) and the hydraulic control valve (20) for controlling
is demagnetized and returned to the opposite valve (21) by the biasing force of the lintern spring (21)-2, which activates the hydraulic control valve (20).
The hydraulic motor (19) is cut off from the hydraulic motor (19) to stop the swinging operation of the upper swinging body (7).
掘削作業部（９）と原動機部（５）のカバー＜５）−１
の接触には、同作業部（９）先端のパケット（１５）先
端（１５）−２とカバー（５）−１上面（５）−３の接
触と、ブーム（１１）中途部（１１）’−３とカバー内
側面（５）−２の接触とがあり、上記の順に説明すれば
、まず、掘削作業部（９）先端のパケット（１５）の回
動軌跡は、上旋回機体（７）の旋回作動、及び、掘削作
業部（９）のブーム＜１１）、アーム（１３）、パケッ
ト（１５）の回動作動により形成されるものであり、本
実施例では、ブーム（１１）の全長（ａ ）から、アー
ム（１３）の全長（ｂ ’）とパケット（１５）の全長
（Ｃ）を差引いた長さが、カバー（５）−１のブーム支
持体前端（１０）−１からの高さくｈ ）よりも長くし
ているので、ブーム（１１）が最上方位置にあるときは
、アーム（１３）とパケット（１５）をいかに下方回動
させても、掘削作業部（９）先端のパケット（１５）は
、カバー（５）−１よりも高位置にあって、上部旋回機
体（７）は同カバー（５）−１に接触することなく、全
旋回しうるちのである。また、ブーム中途部（１１）−
３とカバー（５）−１内側面（５）−２との接触も、ブ
ーム（１１）を最上方位置におくことで、ブーム中途部
の水平方向張り出し量が減じて、同内側面（５）−２と
の間隔が広がり接触が回避されるものである。Cover of excavation work section (9) and prime mover section (5) <5)-1
The contact includes the contact between the tip (15)-2 of the packet (15) at the tip of the working part (9) and the top surface (5)-3 of the cover (5)-1, and the middle part (11) of the boom (11). -3 and the inner surface of the cover (5) -2.If we explain in the above order, firstly, the rotation locus of the packet (15) at the tip of the excavation working part (9) is It is formed by the rotational movement of the boom (11), the arm (13), and the packet (15) of the excavation working part (9), and in this example, the total length of the boom (11) The length obtained by subtracting the total length (b') of the arm (13) and the total length (C) of the packet (15) from (a) is the length from the front end of the boom support (10)-1 of the cover (5)-1. Since the height is longer than the height (h), when the boom (11) is in the uppermost position, no matter how downwardly the arm (13) and packet (15) are rotated, the tip of the excavating part (9) The packet (15) is located at a higher position than the cover (5)-1, and the upper rotating body (7) can make a full turn without contacting the cover (5)-1. Also, the middle part of the boom (11) -
3 and the inner surface (5)-2 of the cover (5)-1. By placing the boom (11) in the uppermost position, the amount of horizontal protrusion of the mid-section of the boom is reduced, and the contact between the inner surface (5)-2 of the cover (5)-1 is reduced. )-2 is widened and contact is avoided.
かかる掘削作業部（９）とカバー（５）−１の接触は、
同作業部（９）が後方旋回位置においてのみ起るもので
あるから、掘削作業部（９）が前方位置にあるときは自
在に掘削作業を行うことができ、掘削作業部（９）をカ
バー（５）−１よりも後方に旋回するときのみブーム（
１１）を最上方位置にしておけば、何等支障なく掘削作
業を行うことができるものである。The contact between the excavating part (9) and the cover (5)-1 is as follows:
Since the working part (9) is only in the rearward turning position, when the excavating working part (9) is in the forward position, the digging work can be carried out freely, and the excavating working part (9) is not covered. (5) Only when turning backwards than -1, the boom (
11) in the uppermost position, excavation work can be carried out without any problem.
従って、ブーム（１１）位置が最上方位置でないとき、
上部旋回機体（７）を旋回させた際、掘削作業部（９）
が、カバー（５）−１に接触する範囲に近接すると左右
角センサー（１７）の出力が断たれて、同機体（７）の
回動が自動的に停止し、掘削作業部（９）とカバー（５
）−１の接触が回避されるものである。Therefore, when the boom (11) position is not at the uppermost position,
When the upper rotating body (7) is rotated, the excavation work section (9)
However, when it comes close to contacting the cover (5)-1, the output of the left/right angle sensor (17) is cut off, the rotation of the machine (7) automatically stops, and the excavation work part (9) and Cover (5
)-1 contact is avoided.
なお、各センサー（１６）＜１７）のうち、少くとも一
方からの出力がないと上部旋回機体（７）が旋回作動し
ないように構成しているので、断線等号−の故障の際は
上部旋回機体（７）の旋回作動が停止するので安全性が
高い。Note that the upper rotating body (7) is configured so that it will not rotate unless there is an output from at least one of the sensors (16) < 17), so in the event of a break in the upper Since the swinging operation of the swinging body (7) is stopped, safety is high.
また、左右角センサー（１７）により上部旋回機体の旋
回作動が停止しているときでも掘削作業部（９）の上下
回動は可能であるから、この際は、ブーム（１１）を最
上方位置まで回動させることにより同旋回を続行させる
ことができる。In addition, even when the swinging operation of the upper swing body is stopped by the left/right angle sensor (17), the excavation working part (9) can be moved up and down, so in this case, the boom (11) should be moved to the uppermost position. The same rotation can be continued by rotating the robot up to that point.
なお、図中（２２）は油圧ポンプ、（２３）は作動油タ
ンク、（２５）はカウンターバランスを示し、（２６）
は同バックホー（Ａ）操縦のための各種操作レバー、（
２７）はカバー（５）−１前端面に配設した原動機部（
５）操作レバーである。In the figure, (22) is the hydraulic pump, (23) is the hydraulic oil tank, (25) is the counterbalance, and (26) is the hydraulic pump.
are various operating levers for operating the same backhoe (A), (
27) is the prime mover section (
5) It is an operating lever.
第１図は、本発明による安全装置を有する二重旋回バッ
クホーの全体左側面図
第２図は、同平面図
第３図は、同要部平面図
第４図は、第１図Ｉ−Ｉ断面図
第５図は、同油圧回路図
第６図は、本発明装置の電気回路図
（Ａ）：二重旋回バックホー
（２）二走行機体
（４）：上部旋回機体
（７）：下部旋回機体
（９）：掘削作業部
（１１）：ブーム
（１６）二上下角センサー
（１７）：左右角センサー
特許出願人 セイレイ工業株式会社
代理人 松 尾 憲 −部
第３図
第５図FIG. 1 is an overall left side view of a double revolving backhoe having a safety device according to the present invention. FIG. 2 is a plan view of the same. FIG. 3 is a plan view of the main parts. 5 is a cross-sectional view of the same hydraulic circuit; FIG. 6 is an electrical circuit diagram of the device of the present invention (A): double-swinging backhoe (2) dual-traveling machine (4): upper swinging machine (7): lower swinging Aircraft (9): Excavation work section (11): Boom (16) Two vertical angle sensors (17): Left and right angle sensors Patent applicant: Seirei Kogyo Co., Ltd. Agent Ken Matsuo - Department Figure 3 Figure 5
Claims (1)
た下部旋回機体（４）を左右回動自在に載設し、更に同
機体（４）の上方に、上部旋回機体（７）を左右回動自
在に載設し、同機体（７）に掘削作業部（９）基端のブ
ーム（１１）を上下回動自在に枢支した二重旋回バック
ホー（Ａ）において、ブーム（１１）の上部旋回機体（
７）に対する上下角度を検出するための上下角センサー
（１６）、上部旋回機体（７）の下部旋回機体（４）の
に対する左右角度を検出する左右角センサー（１７）を
配設し、各センサー（１６）（１７）からの出力により
、掘削作業部（９）の作動範囲を制限すべく構成してな
る二重旋回バックホーの旋回安全装置。1) Above the running aircraft (2), a lower swinging aircraft (4) equipped with a prime mover section (5) is mounted so as to be rotatable left and right, and above the aircraft (4), an upper swinging aircraft (4) is installed. 7) is installed so that it can freely rotate left and right, and the boom (11) at the base end of the excavation work part (9) is pivotally supported on the machine body (7) so that it can freely move up and down. (11) Upper rotating aircraft (
A vertical angle sensor (16) for detecting the vertical angle with respect to (16) A swing safety device for a double swing backhoe configured to limit the operating range of the excavation working part (9) by the output from (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5633485A JPS61216938A (en) | 1985-03-19 | 1985-03-19 | Safety device for rotation of double-slewing back hoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5633485A JPS61216938A (en) | 1985-03-19 | 1985-03-19 | Safety device for rotation of double-slewing back hoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61216938A true JPS61216938A (en) | 1986-09-26 |
Family
ID=13024303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5633485A Pending JPS61216938A (en) | 1985-03-19 | 1985-03-19 | Safety device for rotation of double-slewing back hoe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61216938A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63217022A (en) * | 1987-03-05 | 1988-09-09 | Komatsu Ltd | Controller for attitude of working machine of slewing excavator |
| WO1990008233A1 (en) * | 1989-01-23 | 1990-07-26 | Kabushiki Kaisha Komatsu Seisakusho | Service machine stopping apparatus for midget rotary power shovel |
-
1985
- 1985-03-19 JP JP5633485A patent/JPS61216938A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63217022A (en) * | 1987-03-05 | 1988-09-09 | Komatsu Ltd | Controller for attitude of working machine of slewing excavator |
| WO1990008233A1 (en) * | 1989-01-23 | 1990-07-26 | Kabushiki Kaisha Komatsu Seisakusho | Service machine stopping apparatus for midget rotary power shovel |
| US5136928A (en) * | 1989-01-23 | 1992-08-11 | Kabushiki Kaisha Komatsu Seisakusho | Service machine stopping apparatus for midget rotary power shovel |
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