JPS59188341U

JPS59188341U - Oil passage structure in hydraulic travel transmission

Info

Publication number: JPS59188341U
Application number: JP1983084708U
Authority: JP
Inventors: 照男南
Original assignee: 株式会社クボタ
Priority date: 1983-06-01
Filing date: 1983-06-01
Publication date: 1984-12-13

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]

図面は本考案に係る油圧式走行変速装置における油路構
造の実施例を示し、第１図は油圧回路図、第２図はミッ
ションケースに付設の油路形成用プレートの一部切欠側
面図、第３図はロータリバルブの装着部を示ｊ切欠側面
図、第４図は間部の一部展開切欠正面図である。３・・・・・・油路形成用プレート、４・・・・・・バ
ルブケーシング、５・・・・・・バルブ取付用フランジ
、６・・・・・・凹Ｌ　Ｍ・・・・・・ミッションケー
ス、Ｒ５，Ｒ２・・・・・・変速用油路、ｒｌ・・・・
・・吐出ポート側油路部分、ｒ２・・・・・・シリング
側油路部分、ｒ３・・・・・・迂回油路部分、Ｓ２・・
・・・・変速用油圧シリンダ、Ｕ、、　Ｕ２．　Ｕ３．
　Ｕｏ・・・・・・吐出ポート、■・・・・・・変速操
作用ロータリバルブ。第１図第２図The drawings show an embodiment of the oil passage structure in the hydraulic traveling transmission according to the present invention, in which Fig. 1 is a hydraulic circuit diagram, Fig. 2 is a partially cutaway side view of an oil passage forming plate attached to a transmission case, FIG. 3 is a cutaway side view showing the mounting portion of the rotary valve, and FIG. 4 is a partially exploded cutaway front view of the space between the rotary valves. 3... Oil passage forming plate, 4... Valve casing, 5... Valve mounting flange, 6... Concave L M...・Mission case, R5, R2...Transmission oil passage, rl...
...Discharge port side oil passage part, r2...Silling side oil passage part, r3...Detour oil passage part, S2...
... Hydraulic cylinder for speed change, U,, U2. U3.
Uo...Discharge port, ■...Rotary valve for speed change operation. Figure 1 Figure 2

Claims

[Scope of utility model registration request]

The casing 4 of the rotary valve for speed change operation (■) has ports U, U2. U
3. A plurality of Uo are arranged in parallel in the rotational direction of the spool 4A, and a shift oil passage R2 communicating between one U2 of the plurality of discharge ports and the corresponding shift hydraulic cylinder S2 is formed on the mating surface. Formed in 1-, the discharge port side oil passage part 1 and the cylinder side oil passage part 2 are connected by an oil passage part 3 that bypasses another gear shift oil passage R4 located between them. An oil passage structure in a hydraulic traveling transmission, which is for mounting a valve in a state where the outer surface of an oil passage forming plate 3 provided in the valve casing 4 is pressed against the transmission case side. An oil passage structure in a hydraulic traveling transmission, in which an inner surface of a flange 5 is provided with a concave groove 6 for forming the detour oil passage part 3.