JPH02148056U

JPH02148056U -

Info

Publication number: JPH02148056U
Application number: JP5774689U
Authority: JP
Priority date: 1989-05-18
Filing date: 1989-05-18
Publication date: 1990-12-17

Description

[Brief explanation of drawings]

第１図は本考案の一実施例における給脂装置を
備えた油圧シヨベルの概略側面図、第２図は本考
案の一実施例における給脂装置の配管系統図、第
３図はアームの内部空間への子分配弁の取付部の
拡大断面図、第４図はアームの先端部の拡大断面
図、第５図は第１図における−矢視断面図、
第６図は第１図における−矢視断面図、第７
図は別の実施例における給脂装置の配管系統図で
ある。８……アーム、１４……バケツトリンク、１５
……バケツトリンク下部ピン、１７……バケツト
シリンダー、１７ａ……ピストンロツド、１８…
…バケツトリンク上部ピン、２０……バケツトブ
ラケツト、２１……バケツト下部ピン、２２……
バケツト上部ピン、２３……連結ブラケツト、３
５，３６……給脂管、４７，５１，７５，９８…
…分岐路、４８，５２，７３，９６……油路、７
８，１０１……連通路。 Fig. 1 is a schematic side view of a hydraulic excavator equipped with a greasing device according to an embodiment of the present invention, Fig. 2 is a piping system diagram of the greasing device according to an embodiment of the present invention, and Fig. 3 is the inside of the arm. 4 is an enlarged sectional view of the distal end of the arm; FIG. 5 is a sectional view taken in the direction of the − arrow in FIG. 1;
Figure 6 is a sectional view taken along the - arrow in Figure 1;
The figure is a piping system diagram of a greasing device in another embodiment. 8...Arm, 14...Bucket link, 15
...Bucket link lower pin, 17...Bucket cylinder, 17a...Piston rod, 18...
...Bucket link upper pin, 20...Bucket bracket, 21...Bucket lower pin, 22...
Bucket upper pin, 23... Connection bracket, 3
5, 36... Greasing pipe, 47, 51, 75, 98...
... Branch road, 48, 52, 73, 96 ... Oil road, 7
8,101...Communication path.

Claims

[Scope of utility model registration request]

A bucket trink lower pin that connects the arm of a hydraulic excavator and one end of the bucket trink in a relatively rotatable manner, and a bucket that connects the other end of the bucket trink and a piston rod of a bucket cylinder in a relatively rotatable manner. a bucket-trink upper pin, a bucket-bottom pin that connects the tip of the arm and one end of the bucket bracket in a relatively rotatable manner, and a connecting bracket whose one end is rotatably supported by the bucket-trink top pin. A lubrication device that supplies lubricant to the outer periphery of an upper bucket pin that connects the other end of the bucket bracket and the other end of the bucket bracket in a relatively rotatable manner, the lower bucket pin and the upper bucket bracket. An oil passage serving as a lubricant passage and a plurality of branch passages communicating the oil passage with the outer periphery of each of the pins are formed in the pin, the bucket lower pin, and the bucket upper pin, respectively, and the bucket link is provided with the bucket A communication path is formed that communicates the oil passage of the lower bucket pin with the oil passage of the bucket upper pin via the branch passage, and the oil passage of the lower bucket pin and the upper bucket pin are connected to the bucket bracket. A communication passage is formed that communicates the oil passage of the pin via the branch passage, and among the branch passages, at least one branch passage of each of the bucket trink lower pin and the bucket lower pin is connected to the inside of the arm. A greasing device for a bucket operating part of a hydraulic excavator, characterized in that a greasing pipe for supplying lubricant is connected to each pipe.