JPH0441549U - - Google Patents
Info
- Publication number
- JPH0441549U JPH0441549U JP8234490U JP8234490U JPH0441549U JP H0441549 U JPH0441549 U JP H0441549U JP 8234490 U JP8234490 U JP 8234490U JP 8234490 U JP8234490 U JP 8234490U JP H0441549 U JPH0441549 U JP H0441549U
- Authority
- JP
- Japan
- Prior art keywords
- swing bearing
- upper rotating
- 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)
- Support Of The Bearing (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……電磁切り替え弁、１８……油
圧ポンプ、３２，３３……カム、３６，３７……
スイツチ。
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. It is a diagram. 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 ... Solenoid switching valve, 18 ... Hydraulic pump, 32, 33 ... Cam, 36 ,37...
Switch.
Claims (1)
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
を行う電磁弁手段と、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電気的スイツチ
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。 In 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, the lower traveling body and a race of the swing bearing provided on one side of 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 the race of the swing bearing is provided between the lower running body and the other of the upper rotating body. Hydraulically actuated locking means fixed to the other rotating upper structure, electromagnetic valve means for switching a hydraulic circuit to selectively supply hydraulic pressure from a hydraulic pump to the locking means, and operation of the traveling operation means. A locking device for a swing bearing in a hydraulic excavator, comprising: electric switch means for operating said valve means in response to said hydraulic pump and supplying hydraulic pressure from said hydraulic pump to said locking means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8234490U JPH0726440Y2 (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 |
|---|---|---|---|
| JP8234490U JPH0726440Y2 (en) | 1990-08-02 | 1990-08-02 | Slewing bearing locking device in hydraulic excavators |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0441549U true JPH0441549U (en) | 1992-04-08 |
| JPH0726440Y2 JPH0726440Y2 (en) | 1995-06-14 |
Family
ID=31629070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8234490U Expired - Lifetime JPH0726440Y2 (en) | 1990-08-02 | 1990-08-02 | Slewing bearing locking device in hydraulic excavators |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0726440Y2 (en) |
-
1990
- 1990-08-02 JP JP8234490U patent/JPH0726440Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0726440Y2 (en) | 1995-06-14 |