JPH01167108U

JPH01167108U -

Info

Publication number: JPH01167108U
Application number: JP5857188U
Authority: JP
Priority date: 1988-04-30
Filing date: 1988-04-30
Publication date: 1989-11-24

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示し、第１図は本考
案装置の要部拡大側面図、第２図は作業機の全体
斜視図、第３図は作業機に対する尾輪及びそのロ
ツク装置の作動状態を示す側面図、第４図はロツ
ク装置の平断面図、第５図は同じく縦断面図、第
６図Ａ，Ｂは装置の作用状態を示す拡大側面図で
ある。１：走行機体、５：作業機、７：作業機フレー
ム、１３：トツプマスト、２１：尾輪、２３：マ
ストサポート、２３ａ：カム面、３１：ロツクレ
バー、３１ａ：ブレートレバー、３１ｂ：ピンレ
バー、３１ｄ：係合部、３３：ストツパーピン、
３５：レバー軸、４１：ロツク孔、４３：接触カ
ム、４３ａ：カム面。 The drawings show one embodiment of the present invention; Fig. 1 is an enlarged side view of the main parts of the device of the present invention, Fig. 2 is an overall perspective view of the working machine, and Fig. 3 shows the tail wheel and its locking device for the working machine. 4 is a plan sectional view of the locking device, FIG. 5 is a longitudinal sectional view thereof, and FIGS. 6A and 6B are enlarged side views showing the operating state of the device. 1: Traveling machine body, 5: Work equipment, 7: Work equipment frame, 13: Top mast, 21: Tail wheel, 23: Mast support, 23a: Cam surface, 31: Lock lever, 31a: Brate lever, 31b: Pin lever, 31d: Engagement part, 33: stopper pin,
35: lever shaft, 41: lock hole, 43: contact cam, 43a: cam surface.

Claims

[Scope of utility model registration request]

A plate-shaped mast support 2 is attached to the top mast 13 that connects the work machine frame 7 to the traveling machine body 1 side.
In the mechanism in which the top mast 1 is pivotally supported so that the top mast 1 can swing freely, and the swinging of the mast support 23 and the lifting and lowering of the tail wheel 21 with respect to the working machine 5 are operated in a linked manner.
3, a lock lever 31 is supported by a lever shaft 35 so as to be swingable in the front and back directions and slidable in the left and right directions;
A rise regulating section that engages and disengages the tail wheel of the mast support 23 at the normal working position by the back and forth rocking of the lock lever 31, and a descending regulating section that engages and disengages the tail wheel of the mast support 23 at its raised and floating position by sliding the lock lever 31 left and right. It is provided on the lock lever 31 side and the mast support 23 side, and the lever shaft 3
Cam surfaces 43a, 23a are formed at positions close to the outer periphery of the tail wheel 21 and the outer periphery of the mast support 23, and when the tail wheel 21 is unlocked from the lowered state by the lock lever 31, the left and right movement of the lock lever 31 is controlled. The cam surface 43a is connected to the other cam surface 2 so as to control the cam surface 43a.
A floating lock device for the tail wheel is a mechanism that is pressed against 3a.