JPH0189659U - - Google Patents
Info
- Publication number
- JPH0189659U JPH0189659U JP1987186943U JP18694387U JPH0189659U JP H0189659 U JPH0189659 U JP H0189659U JP 1987186943 U JP1987186943 U JP 1987186943U JP 18694387 U JP18694387 U JP 18694387U JP H0189659 U JPH0189659 U JP H0189659U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- skid steer
- operating
- drive
- hydraulic oil
- 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.)
- Pending
Links
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Landscapes
- Control Of Fluid Gearings (AREA)
Description
第１図〜第５図はこの考案を具体化した第１実
施例を示す図面であつて、第１図はスキツドステ
ア式車両の駆動系の概略図、第２図は駆動輪操作
装置の概略図、第３図〜第５図は倍力装置の作用
を示す断面図である。第６図〜第９図はこの考案
を具体化した第２実施例を示す図面であつて、第
６図は駆動輪操作装置の概略図、第７図〜第９図
の倍力装置の作用を示す断面図である。第１０図
は従来例のスキツドステア式車両の駆動系の概略
図である。
原動機としてのエンジン……２、可変容量ポン
プ……３、駆動輪……４、液圧モータ……５、操
作レバー……８、作動油制御部材としての斜板レ
バー１１、倍力伝達手段としての倍力装置……１
５，４１、倍力シリンダ……２３，４４、流量制
御弁を構成するアウタースプール……２６，５１
及びインナースプール２７，５３、中立ばねを構
成する圧縮ばね……３３，５５，５６。
Figures 1 to 5 are drawings showing a first embodiment embodying this invention, in which Figure 1 is a schematic diagram of a drive system of a skid steer vehicle, and Figure 2 is a schematic diagram of a drive wheel operating device. , FIGS. 3 to 5 are cross-sectional views showing the operation of the booster. Figures 6 to 9 are drawings showing a second embodiment embodying this invention, in which Figure 6 is a schematic diagram of the drive wheel operating device, and Figures 7 to 9 show the operation of the booster. FIG. FIG. 10 is a schematic diagram of a drive system of a conventional skid steer vehicle. Engine as a prime mover...2, variable displacement pump...3, drive wheel...4, hydraulic motor...5, operating lever...8, swash plate lever 11 as a hydraulic oil control member, and booster transmission means Boost device...1
5, 41, Boost cylinder...23, 44, Outer spool that constitutes the flow control valve...26, 51
and inner spools 27, 53, compression springs constituting neutral springs...33, 55, 56.
Claims (1)
、同ポンプから供給される作動油により駆動され
る液圧モータに基いて駆動輪を駆動するように構
成したスキツドステア式車両において、 前記可変容量ポンプから液圧モータへの作動油
の供給を制御するための作動される作動油制御部
材と同作動油制御部材を作動させるために操作さ
れる操作レバーとを操作レバーの操作力を補助す
るための倍力伝達手段を介して駆動連結したスキ
ツドステア式車両の駆動輪操作装置。 ２ 前記倍力伝達手段は前記操作レバーに連結さ
れ、同レバーの操作に連動して開閉動作される油
圧式流量制御弁と、同流量制御弁からの作動油の
出入りに基き前記作動油制御部材を作動させる油
圧式倍力シリンダとからなるものである実用新案
登録請求の範囲第１項に記載のスキツドステア式
車両の駆動輪操作装置。 ３ 前記倍力伝達手段は操作レバーを中立位置に
保持するための中立ばねを内蔵したものである実
用新案登録請求の範囲第１項に記載のスキツドス
テア式車両の駆動輪操作装置。[Claims for Utility Model Registration] 1. A skid steer type vehicle equipped with a variable displacement pump driven by a prime mover and configured to drive drive wheels based on a hydraulic motor driven by hydraulic oil supplied from the pump. In the vehicle, a hydraulic oil control member that is operated to control the supply of hydraulic oil from the variable displacement pump to the hydraulic motor and an operating lever that is operated to operate the hydraulic oil control member are connected to the operating lever. A drive wheel operating device for a skid steer vehicle that is drive-coupled via a booster transmission means to assist operating force. 2. The boost transmission means includes a hydraulic flow control valve that is connected to the operating lever and is opened and closed in conjunction with the operation of the lever, and the hydraulic fluid control member based on the flow of hydraulic fluid in and out from the flow control valve. A drive wheel operating device for a skid steer type vehicle according to claim 1, which comprises a hydraulic booster cylinder for operating a hydraulic booster cylinder. 3. The drive wheel operating device for a skid steer vehicle according to claim 1, wherein the booster transmission means incorporates a neutral spring for holding the operating lever in a neutral position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987186943U JPH0189659U (en) | 1987-12-07 | 1987-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987186943U JPH0189659U (en) | 1987-12-07 | 1987-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0189659U true JPH0189659U (en) | 1989-06-13 |
Family
ID=31478138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987186943U Pending JPH0189659U (en) | 1987-12-07 | 1987-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0189659U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4830789U (en) * | 1971-08-17 | 1973-04-14 |
-
1987
- 1987-12-07 JP JP1987186943U patent/JPH0189659U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4830789U (en) * | 1971-08-17 | 1973-04-14 |
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