JPS59166002U

JPS59166002U - swivel vehicle

Info

Publication number: JPS59166002U
Application number: JP6096283U
Authority: JP
Inventors: 近藤　逸生
Original assignee: 日立建機株式会社
Priority date: 1983-04-23
Filing date: 1983-04-23
Publication date: 1984-11-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は旋回式車両としての油圧ショベルの外観図、第
２図および第３図は従来技術による旋回式車両の動作説
明図、第４図は本考案の旋回式車両におけるセンタジヨ
イントの正面図、第５図は　　゛第４図の平面図、第６
図は第５図中のＶＩ−ＶＩ矢示方向断面図、第７図イは
第６図のＡ−Ａ矢示方向断面図、第７図口は第６図のＢ
−Ｂ矢示方向断面図、第７図ハは第６図のＣ−Ｃ矢示方
向断面図、第８図は第６図の■−■矢示方向断面図、第
９図は本考案における等価油圧回路図、第１０図イ。口はセンタジヨイントのそれぞれ異なる連通状況を示す
説明図である。、　１・・・下部走行体、２・・・上部旋回体、６．７
・・・左、右走行モータ、１０・・・センタジヨイント
、２０・・・インナバルブ、２１，２２，２３．２４・
・・油路、３０・・・アウタバルブ、３１，３２，３３
．３４・・・切換室、４４．４５・・・左、右走行レバ
ー、４６゜４７・・・左、右走行レバー用制御弁。、第
２図第４図第６図第８図Figure 1 is an external view of a hydraulic excavator as a swing vehicle, Figures 2 and 3 are explanatory diagrams of the operation of a swing vehicle according to the prior art, and Figure 4 is a front view of the center joint in the swing vehicle of the present invention. Figure 5 is the plan view of Figure 4, Figure 6.
The figure is a sectional view in the direction of the VI-VI arrow in Fig. 5, Fig. 7 A is a sectional view in the direction of the A-A arrow in Fig. 6, and the opening in Fig. 7 is a sectional view in the direction of the A-A arrow in Fig. 6.
-B is a sectional view in the direction of the arrow, FIG. 7C is a sectional view in the direction of the C-C arrow in FIG. 6, FIG. 8 is a sectional view in the direction of the Equivalent hydraulic circuit diagram, Figure 10a. The mouth is an explanatory diagram showing different communication situations of the center joint. , 1... Lower traveling body, 2... Upper revolving body, 6.7
...Left, right travel motor, 10...Center joint, 20...Inner valve, 21, 22, 23.24.
...Oil passage, 30...Outer valve, 31, 32, 33
．． 34...Switching chamber, 44.45...Left and right travel levers, 46°47...Left and right travel lever control valves. , Figure 2, Figure 4, Figure 6, Figure 8

Claims

[Scope of utility model registration request]

A lower traveling body is provided with left and right travel motors, an upper rotating body is rotatably provided on the lower traveling body and is provided with a control valve operated by a hydraulic pump and left and right travel levers, and an outer valve. and a center joint in which one of the outer valve and the inner valve is attached to the lower traveling body and the other to the upper revolving body, and one of the outer valve and the inner valve of the center joint is attached to the upper rotating body. In a swing-type vehicle in which the control valve is connected to a hydraulic pump and the other end is connected to the cloth and the supply/exhaust port of the right travel motor, the upper swing body is attached to the center joint so that it can rotate in any direction, forward or backward. 1. A swing-type vehicle characterized in that a switching valve mechanism is provided that can rotate each of the travel motors in a forward direction by operating each of the travel levers in one direction.