JPH0191603U

JPH0191603U -

Info

Publication number: JPH0191603U
Application number: JP18863987U
Authority: JP
Priority date: 1987-12-10
Filing date: 1987-12-10
Publication date: 1989-06-15

Description

[Brief explanation of the drawing]

第１図乃至第３図は本考案の一実施例を示し、
第１図は要部の平面断面図、第２図はトラクタの
側面図、第３図は第１図のＡ―Ａ線矢視断面図、
第４図は本考案の比較例を示す平面断面図、第５
図は本考案とは別の作物防護装置を示す要部の縦
側断面図である。１……トラクタ車体、４，５……前・後輪、９
……後車軸ケース、１０……後車軸、３１……連
動体、３３……油圧シリンダ、３５……ピストン
ロツド、３６……ピストン、３７……シリンダ本
体、４０，４１……内側・外側油室、４４，４５
……油路、４９……制御弁、５３……蓋体、５４
……ストツパ。 1 to 3 show an embodiment of the present invention,
Fig. 1 is a plan sectional view of the main parts, Fig. 2 is a side view of the tractor, Fig. 3 is a sectional view taken along line A-A in Fig. 1,
Figure 4 is a plan sectional view showing a comparative example of the present invention;
The figure is a longitudinal cross-sectional view of the main parts of a crop protection device different from the present invention. 1...Tractor body, 4, 5...Front/rear wheels, 9
... Rear axle case, 10 ... Rear axle, 31 ... Interlocking body, 33 ... Hydraulic cylinder, 35 ... Piston rod, 36 ... Piston, 37 ... Cylinder body, 40, 41 ... Inner/outer oil chamber ,44,45
... Oil passage, 49 ... Control valve, 53 ... Lid, 54
...Stotsupa.

Claims

[Scope of Claim for Utility Model Registration] In a vehicle in which wheels 5 are supported on both left and right sides of a vehicle body 1 via an axle 10, the axle 10 is a shaft 21 on the vehicle body side and a shaft 22 on the wheel side.
A double-acting hydraulic cylinder 33 is disposed in the left-right direction and is extendable and retractable, and extends and contracts the axle 10 to move the wheels 5 in the left-right direction. a piston rod 35 that is held and extends outward; a piston 36 that is fixed to the outer end of the piston rod 35;
It has a piston 36 and a cylinder body 37 that is fitted around the piston rod 35 so as to be slidable in the axial direction. Oil passages 44 and 45 for supplying hydraulic oil to the respective oil chambers 40 and 41 are formed in the piston rod 35 in the axial direction from the inner end thereof toward the outer end thereof, and the inner end of each oil passage 44 and 45 is A control valve 49 for controlling the hydraulic cylinder 33 is connected to the inner end of the cylinder body 37, and by covering the inner end side opening of the cylinder body 37 and directly contacting the piston 36, the cylinder is closed. A lid body 53 is provided to restrict outward sliding of the main body 37, and covers the outer end side opening of the cylinder main body 37 and connects the cylinder main body 37 and the wheel side shaft. 22, and a stopper 54 located between the piston 36 and the interlocking body 31 to restrict inward sliding of the cylinder body 37 is provided in the cylinder body 37. Features a vehicle wheel distance adjustment device.