JPS6356752U

JPS6356752U -

Info

Publication number: JPS6356752U
Application number: JP14836586U
Authority: JP
Priority date: 1986-09-26
Filing date: 1986-09-26
Publication date: 1988-04-15

Description

[Brief explanation of the drawing]

第１図は、本考案バツクホーの全体側面図。第
２図は、本考案の要部拡大図。第３図は、本考案
の要部拡大図。第４図は、第３図―線断面図
。３：旋回機体、４：ブーム、９：ブーム支持体
、１０：ブーム取付部、１３：油圧シリンダー、
１４：固定内軸、１５：回転外筒、１６：端面ポ
ート、１７：周面ポート、１８：作動油流路、２
０：環状凹溝、２１：外筒ポート、２４：送油ホ
ース。 FIG. 1 is an overall side view of the invented baghoe. Figure 2 is an enlarged view of the main parts of the present invention. Figure 3 is an enlarged view of the main parts of the present invention. FIG. 4 is a sectional view taken along the line shown in FIG. 3. 3: Swivel body, 4: Boom, 9: Boom support, 10: Boom attachment part, 13: Hydraulic cylinder,
14: Fixed inner shaft, 15: Rotating outer cylinder, 16: End port, 17: Peripheral port, 18: Hydraulic oil flow path, 2
0: Annular groove, 21: Outer cylinder port, 24: Oil supply hose.

Claims

[Scope of utility model registration request]

On the boom support 9 provided in front of the rotating body 3,
In a backhoe in which the base end of a boom 4 equipped with a plurality of hydraulic cylinders 13 is attached via a boom attachment part 10, the boom attachment part 10 is fixedly attached to brackets 9a and 9b on a boom support 9 in an erected state. It is a swivel shaft consisting of an inner shaft 14 and a rotary outer cylinder 15 at the base end of the boom 4, which is attached concentrically and rotatably around the fixed inner shaft 14. A flow path 18 is formed, and one end of the flow path 18 is communicated with an end face port 16 opened on a coaxial end face, and an outer cylinder port 21 of the rotary outer cylinder 15 is connected to each hydraulic cylinder 13 of the boom 4.
A boom refueling piping structure for a backhoe which is connected in communication via an oil supply hose 24.