JPS61162643U

JPS61162643U -

Info

Publication number: JPS61162643U
Application number: JP4721785U
Authority: JP
Priority date: 1985-03-29
Filing date: 1985-03-29
Publication date: 1986-10-08

Description

[Brief explanation of the drawing]

第１図はロツク用油圧バルブ５を手動にて操作
する実施例の側面図、第２図はロツク用油圧バル
ブ５をソレノイドバルブとした場合の実施例の側
面図、第３図は全体の制御構成を示す図面、第４
図は左右の操向ブレーキペダルとの連動を示す平
面図、第５図は同じく側面図、第６図は第３図の
ロツク機構の側面断面図、第７図は一体形油圧駆
動側面図の側面断面図、第８図はポンプ斜板１７
の回動を示す側面断面図、第９図・第１０図・第
１２図・第１３図は油圧ロツク機構の他の実施例
を示す断面図、第１１図は油圧ポンプの他の構造
を示す断面図である。Ａ……一体形油圧駆動装置、１……操作レバー
、２……ロツクレバー、４……ポンプ斜板回動軸
、１４……ロツクボタン、１７……ポンプ斜板。 Fig. 1 is a side view of an embodiment in which the locking hydraulic valve 5 is operated manually, Fig. 2 is a side view of an embodiment in which the locking hydraulic valve 5 is a solenoid valve, and Fig. 3 is an overall control. Drawing showing the configuration, No. 4
The figure is a plan view showing the interlocking with the left and right steering brake pedals, Figure 5 is a side view, Figure 6 is a side sectional view of the lock mechanism in Figure 3, and Figure 7 is a side view of the integrated hydraulic drive. Side sectional view, FIG. 8 shows pump swash plate 17
9, 10, 12 and 13 are sectional views showing other embodiments of the hydraulic lock mechanism, and Fig. 11 shows another structure of the hydraulic pump. FIG. A...Integrated hydraulic drive device, 1...Operation lever, 2...Lock lever, 4...Pump swash plate rotating shaft, 14...Lock button, 17...Pump swash plate.

Claims

[Scope of Claim for Utility Model Registration] (1) The pump swash plate rotating shaft of an HST hydraulic drive device used in construction machinery, agricultural machinery, etc. is always urged to return to the neutral position, and the hydraulic pump swash plate is 1. An operating structure for a hydraulic drive device, characterized in that a hydraulic locking device capable of locking the swash plate in any position is provided to lock the swash plate rotating shaft. (2) The locking device according to claim 1 of the utility model registration claim is configured to be unlocked by a lock lever or a lock button provided on the operating lever, and to be unlocked by depressing the brake pedal in conjunction with the brake pedal. Operation structure of hydraulic drive device. (3) In the brake pedal according to claim 2 of the utility model registration claim, the hydraulic drive device is characterized in that both the left and right brake pedals for steering are configured to be unlocked when the brake is operated. Operation structure.