JPH0480305U

JPH0480305U -

Info

Publication number: JPH0480305U
Application number: JP12448890U
Authority: JP
Priority date: 1990-11-27
Filing date: 1990-11-27
Publication date: 1992-07-13

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は本考案
のダンパー装置を組込んだ作業機昇降リフトロツ
ドの縦断面図、第２図は同ダンパー装置を組込ん
だ伸縮式作業機昇降リフトロツドの縦断面図、第
３図は三点リンクのリフトロツドに本考案のダン
パー装置を組込んだトラクターの全体側面図、第
４図は同トラクターの平面図である。１……トラクター、３……作業機、７，７′…
…作業機昇降リフトロツド、１２，１２′……一
方の分割ロツド、１３，１３′……他方の分割ロ
ツド、１４，１４′……ダンパー用の封鎖型シリ
ンダー、１５，１５′……ダンパー用のピストン
、１６，１６′……出力油路、２４……リフト長
さ伸縮用の油圧シリンダー、２５……リフト長さ
伸縮用のピストン、３２……リフトロツドストロ
ークセンサー。 The drawings show an embodiment of the present invention. Fig. 1 is a longitudinal sectional view of a work machine lifting rod incorporating the damper device of the present invention, and Fig. 2 is a longitudinal sectional view of a telescopic work machine lifting rod incorporating the damper device. 3 is an overall side view of a tractor incorporating the damper device of the present invention in a three-point linkage lift rod, and FIG. 4 is a plan view of the same tractor. 1...Tractor, 3...Work machine, 7,7'...
...Work equipment lifting rod, 12, 12'... One split rod, 13, 13'... Other split rod, 14, 14'... Closed type cylinder for damper, 15, 15'... Piston, 16, 16'... Output oil path, 24... Hydraulic cylinder for extending/contracting lift length, 25... Piston for extending/contracting lift length, 32... Lift rod stroke sensor.

Claims

[Scope of Claim for Utility Model Registration] (1) In a lift rod for raising and lowering a working machine for a tractor, etc., the lift rod is divided into two parts, and a rod in a sealed cylinder for a damper is formed at the split end of one of the two split rods. A piston formed at the split end of the other split rod is inserted into the end position in the shortening direction, and a soft elastic body is loaded into the rod-side cylinder of the piston, and the piston is displaced in the rod extension direction. A damper device for a lift rod for lifting and lowering a working machine such as a tractor, characterized in that a soft elastic body is configured to be compressed. (2) In a lift rod for lifting and lowering a working machine such as a tractor, in which a hydraulic cylinder for extending and retracting the length of the lift rod is configured in the middle part of the lift rod so that the length of the lift rod can be controlled. A closed cylinder for the damper is integrally formed, a piston for the damper is fitted into the closed cylinder for the damper at the end position in the rod shortening direction, and a soft elastic body is loaded in the cylinder on the rod side of the piston. A damper device for a lift rod for raising and lowering a working machine in a tractor or the like, characterized in that the soft elastic body is compressed by displacement of the damper piston in the rod extension direction. (3) A lift rod stroke sensor to be attached to the lifting rod of a working machine such as a tractor, which is capable of controlling the extension and contraction of the length of the lift rod, is connected to the hydraulic cylinder section for extending and contracting the lift rod length and the rod section of the piston fitted therein. 3. The damper device for a lift rod for lifting and lowering a working machine in a tractor or the like according to claim 2, wherein the damper device is provided between the damper device and the lift rod.