JPS6087258U - Hydraulic path switching device for work vehicles - Google Patents

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

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案に係る作業車における油圧経路切換装置の
一実施例を示したものであって、第１図は作業車の全体
側面図、第２図は油圧経路の概略配線図、第３図は要部
油圧経路の配線図、第４図は切換操作部の斜視図、第５
図〜第８図はそれぞれ作用説明図、第９図は第二実施例
を示す要部斜　−親図、第１０図は同上要部側圧面図、
第１１図、第１２図はそれぞれ作用説明図である。 図中ミ　１は機体本体、４はパケットブーム、５はブー
ムシリンダ、１１．１６は方向制御弁、１７は操作レバ
ー、１９はブレーカ、２４はフットペダル、２７は切換
レバー、２３．３０は連結体である。The drawings show an embodiment of the hydraulic path switching device for a working vehicle according to the present invention, in which FIG. 1 is an overall side view of the working vehicle, FIG. 2 is a schematic wiring diagram of the hydraulic path, and FIG. 3 is a schematic diagram of the hydraulic path switching device. Figure 4 is a wiring diagram of the main hydraulic path, Figure 4 is a perspective view of the switching operation section, and Figure 5 is a wiring diagram of the main hydraulic path.
8 are action explanatory diagrams, FIG. 9 is a perspective view of the main parts of the second embodiment, and FIG. 10 is a side pressure surface view of the main parts of the same.
FIG. 11 and FIG. 12 are action explanatory diagrams, respectively. In the figure, 1 is the main body, 4 is the packet boom, 5 is the boom cylinder, 11.16 is the directional control valve, 17 is the operating lever, 19 is the breaker, 24 is the foot pedal, 27 is the switching lever, 23.30 is the connection It is the body.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] パケットブームが上昇するブームシリンダ伸飛□　　　
　用油路に、該伸長用油路が属する油圧経路とは別系統
の油圧経路に設けた方向制御弁からの油路を合流せしめ
ると共に、該別系統側の方向制御弁にブレーカ等のアタ
ッチメント作業部用油路を連結して、上記別系統側の方
向制御弁を、ブームシリンダ伸長用油路側とアタッチメ
ント作業部用油路側とに切換自在に構成しであることを
特徴とする作業車における油圧経路切換装置。Boom cylinder extension as the packet boom rises□
The oil passage from the directional control valve installed in the hydraulic passage of a separate system from the hydraulic passage to which the extension oil passage belongs is merged into the service oil passage, and attachment work such as a breaker etc. is carried out to the directional control valve on the side of the separate system. Hydraulic pressure in a working vehicle, characterized in that the directional control valve on the separate system side is configured to be freely switchable between an oil passage side for boom cylinder extension and an oil passage side for attachment working parts by connecting the oil passages for the parts. Route switching device.