JPH0441550U - - Google Patents
Info
- Publication number
- JPH0441550U JPH0441550U JP8234590U JP8234590U JPH0441550U JP H0441550 U JPH0441550 U JP H0441550U JP 8234590 U JP8234590 U JP 8234590U JP 8234590 U JP8234590 U JP 8234590U JP H0441550 U JPH0441550 U JP H0441550U
- Authority
- JP
- Japan
- Prior art keywords
- upper rotating
- swing bearing
- rotating body
- hydraulic
- race
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Component Parts Of Construction Machinery (AREA)
- Operation Control Of Excavators (AREA)
Description
第１図は従来の油圧シヨベルの一例を示す側面
図、第２図は旋回ベアリングの詳細を示す一部拡
大断面図、第３図はベアリング部の拡大断面図、
第４図は本考案によるロツク装置の一実施例を示
す平面図、第５図はロツク装置の拡大断面図、第
６図は本考案におけるロツク手段の作動のための
油圧回路の一例を示す回路図、第７図は他の油圧
回路の例を示す回路図である。
２……下部走行体、３……上部旋回体、４……
旋回ベアリング、４ａ……インナレース、４ｂ…
…アウタレース、４ｃ……ベアリングボール、５
……作業機、１１……ロツク手段、１２……座板
、１３……油圧シリンダ手段、１３ｃ……ピスト
ンロツド、１７……切り替え弁、１８……油圧ポ
ンプ、２１……操作レバー。
Fig. 1 is a side view showing an example of a conventional hydraulic excavator, Fig. 2 is a partially enlarged sectional view showing details of the swing bearing, Fig. 3 is an enlarged sectional view of the bearing part,
FIG. 4 is a plan view showing an embodiment of the locking device according to the present invention, FIG. 5 is an enlarged sectional view of the locking device, and FIG. 6 is a circuit showing an example of a hydraulic circuit for operating the locking means according to the present invention. 7 are circuit diagrams showing examples of other hydraulic circuits. 2... Lower traveling body, 3... Upper revolving body, 4...
Swivel bearing, 4a... Inner race, 4b...
...Outer race, 4c...Bearing ball, 5
... Working machine, 11 ... Locking means, 12 ... Seat plate, 13 ... Hydraulic cylinder means, 13c ... Piston rod, 17 ... Switching valve, 18 ... Hydraulic pump, 21 ... Operation lever
Claims (1)
ベアリングを介して旋回可能に支持された上部旋
回体と、前記上部旋回体に設けられたシヨベル作
業機とからなる油圧シヨベルにおいて、前記下部
走行体と前記上部旋回体の一方に設けられた前記
旋回ベアリングのレースと、前記下部走行体と前
記上部旋回体の他方との間に設けられて、前記旋
回ベアリングの前記レースを前記下部走行体と前
記旋回体の他方に対して固定する油圧作動のロツ
ク手段と、油圧ポンプからの油圧を選択的に前記
ロツク手段に供給するために油圧回路の切り替え
を行う弁手段と、前記弁手段を操作するための手
動操作手段とを設けたことを特徴とする油圧シヨ
ベルにおける旋回ベアリングのロツク装置。 (2) 下部走行体と、前記下部走行体の上に旋回
ベアリングを介して旋回可能に支持された上部旋
回体と、前記上部旋回体に設けられたシヨベル作
業機とからなる油圧シヨベルにおいて、前記下部
走行体と前記上部旋回体の一方に設けられた前記
旋回ベアリングのレースと、前記下部走行体と前
記上部旋回体の他方との間に設けられて、前記旋
回ベアリングの前記レースを前記下部走行体と前
記上部旋回体の他方に対して固定する油圧作動の
ロツク手段と、油圧ポンプからの油圧を選択的に
前記ロツク手段に供給するために油圧回路の切り
替えを行う弁手段と、走行操作手段の操作に応答
して前記弁手段を作動させ前記油圧ポンプからの
油圧を前記ロツク手段に供給する弁作動手段とを
設けたことを特徴とする油圧シヨベルにおける旋
回ベアリングのロツク装置。 (3) 請求項２に記載したロツク装置において、
前記弁作動手段は、前記走行操作手段の作動に応
答して前記走行操作手段の動きを前記弁手段に機
会的に伝達するリンク手段であるロツク装置。[Claims for Utility Model Registration] (1) A lower traveling body, an upper rotating body rotatably supported on the lower traveling body via a swing bearing, and a shovel work machine provided on the upper rotating body. A hydraulic shovel comprising: a race of the swing bearing provided on one of the lower traveling body and the upper rotating body; and a race of the swing bearing provided between the other of the lower traveling body and the upper rotating body; Hydraulically actuated locking means for fixing the race of the bearing relative to the other of the undercarriage and the revolving body, and switching a hydraulic circuit to selectively supply hydraulic pressure from a hydraulic pump to the locking means. 1. A locking device for a swing bearing in a hydraulic excavator, comprising a valve means and a manual operation means for operating the valve means. (2) A hydraulic excavator comprising a lower traveling body, an upper rotating body rotatably supported on the lower traveling body via a swing bearing, and a shovel working machine provided on the upper rotating body, A race of the swing bearing provided on one of the lower running body and the upper rotating body, and a race of the swing bearing provided between the other of the lower running body and the upper rotating body, and a race of the swing bearing provided on one of the lower running body and the upper rotating body. a hydraulically actuated locking means fixed to the other of the upper revolving body and the rotating upper body; a valve means for switching a hydraulic circuit to selectively supply hydraulic pressure from a hydraulic pump to the locking means; and a traveling operation means. 1. A locking device for a swing bearing in a hydraulic excavator, comprising: a valve operating means for operating the valve means in response to an operation of the hydraulic pump and supplying hydraulic pressure from the hydraulic pump to the locking means. (3) In the lock device according to claim 2,
A locking device in which the valve operating means is a link means for opportunistically transmitting movement of the traveling operating means to the valve means in response to actuation of the traveling operating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8234590U JPH0726441Y2 (en) | 1990-08-02 | 1990-08-02 | Slewing bearing locking device in hydraulic excavators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8234590U JPH0726441Y2 (en) | 1990-08-02 | 1990-08-02 | Slewing bearing locking device in hydraulic excavators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0441550U true JPH0441550U (en) | 1992-04-08 |
| JPH0726441Y2 JPH0726441Y2 (en) | 1995-06-14 |
Family
ID=31629072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8234590U Expired - Lifetime JPH0726441Y2 (en) | 1990-08-02 | 1990-08-02 | Slewing bearing locking device in hydraulic excavators |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726441Y2 (en) |
-
1990
- 1990-08-02 JP JP8234590U patent/JPH0726441Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0726441Y2 (en) | 1995-06-14 |
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