JPH0350645U

JPH0350645U -

Info

Publication number: JPH0350645U
Application number: JP11025889U
Authority: JP
Priority date: 1989-09-19
Filing date: 1989-09-19
Publication date: 1991-05-16

Description

[Brief explanation of drawings]

第１図は本考案にかかる予圧式スライドパツド
の一実施例を示し、ａは側面図、ｂはａのＡ−Ａ
断面図、第２図は第１図が適用される建設機械の
テレスコピツク式作業機を示し、ａは側面図、ｂ
はａのＢ−Ｂの拡大断面図、第３図は第１図のｂ
の他の実施例の断面図、第４図は従来の外側アー
ムから内側アームを最大にスライドさせた状態を
示し、ａは側面図、ｂはａのＣ−Ｃ断面図、第５
図は第４図ａのＡ部分の拡大側面図、ｂはａのＤ
−Ｄ断面図である。１……テレスコピツク式作業機、２……外側ア
ーム、３……内側アーム、４……穴、５……環状
体、６……雌ねじ、８……軸部材、９……フラン
ジ部、１０……一側軸、１０ａ……端面、１１…
…パツド、１２，１７……他側軸、１２ａ……端
面、１３……タツプ孔、１４……プレート、１５
……ねじ、１６……孔、１８……弾性体（皿ばね
）、１９……タツプボルト。 FIG. 1 shows an embodiment of the preload type slide pad according to the present invention, in which a is a side view and b is an A-A of a.
A sectional view, FIG. 2 shows a telescopic working machine of construction machinery to which FIG. 1 is applied, a is a side view, b
is an enlarged sectional view taken along line B-B in a, and Figure 3 is an enlarged cross-sectional view taken along line B-B in Figure 1.
FIG. 4 is a cross-sectional view of another embodiment of the present invention, showing a state where the inner arm is slid to the maximum from the conventional outer arm, a is a side view, b is a cross-sectional view taken along line C-C of a, and FIG.
The figure is an enlarged side view of part A in Figure 4 a, and b is the D part in a.
-D sectional view. DESCRIPTION OF SYMBOLS 1... Telescopic work machine, 2... Outer arm, 3... Inner arm, 4... Hole, 5... Annular body, 6... Female thread, 8... Shaft member, 9... Flange portion, 10... ...One side shaft, 10a... End face, 11...
... Pad, 12, 17 ... Other side shaft, 12a ... End face, 13 ... Tap hole, 14 ... Plate, 15
...screw, 16 ... hole, 18 ... elastic body (disc spring), 19 ... tap bolt.

Claims

[Scope of claim for utility model registration] 1. A working machine such as a construction machine with a cylindrical outer arm,
A telescopic working machine comprising at least two stages of arms, including an inner arm that is housed in the outer arm and that slides in and out freely; This annular body has a flange part in the middle, and one side shaft passes through the hole and has an end face.
A shaft member is attached with a pad that contacts the inner arm and has a tapped hole on the other side shaft end surface, a screw provided on the outer periphery is screwed into the female thread, and a hole provided in the center is attached to the other side of the shaft member. The tap is equipped with a ring-shaped plate that fits around the shaft, and an elastic body that is provided between the plate and the flange of the shaft member and biases the pad in the direction of pressing the pad through the shaft member. A preload type slide part characterized in that when a tap bolt is tightened in a hole, the part is pulled away from the inner arm against an elastic body, and when the tap bolt is loosened, the elastic body presses the part and fixes the inner arm. 2. The pads for fixing the inner arm to the outer arm are provided one each on the upper and lower sides of at least one side, keeping a certain distance in the direction of bending between the arms and the appropriate distance where both arms are wrapped. The preload type slide part according to claim 1.