JPH0484490U

JPH0484490U -

Info

Publication number: JPH0484490U
Application number: JP13005990U
Authority: JP
Priority date: 1990-11-30
Filing date: 1990-11-30
Publication date: 1992-07-22

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例の側面図、第２図は
同上の要部の拡大側面図、第３図は同要部のうち
登攀部とピン連結部の拡大側断面図、第４図はそ
の斜視図、第５図は別実施例の要部の側面図、第
６図ａ，ｂ，ｃ，ｄ，ｅ，ｆはそれぞれ作用を示
す簡略説明図、第７図は従来例の側面図である。図中、Ａ……ブーム、Ｂ……登攀面、Ｂ１……
倒立登攀面、Ｃ……ピン連結部、Ｄ……ラツチ車
、３……リーダマスト、３ａ……マスト中間部、
４……アースオーガ、８……油圧シリンダ、１０
……連結用横ピン、１１……平行軸支板、１５…
…軸、１７……操作杆、１８……ピン受け杆、２
１……落ち段、２２……制止栓。 Fig. 1 is a side view of one embodiment of the present invention, Fig. 2 is an enlarged side view of the main parts of the same, Fig. 3 is an enlarged side sectional view of the climbing part and pin connecting part of the same main parts, Fig. 4 The figure is a perspective view, FIG. 5 is a side view of the main parts of another embodiment, FIGS. FIG. In the diagram, A...boom, B...climbing surface, B1...
Inverted climbing surface, C...pin connection part, D...latch wheel, 3...leader mast, 3a...middle part of the mast,
4...Earth auger, 8...Hydraulic cylinder, 10
...Horizontal connecting pin, 11...Parallel shaft support plate, 15...
...shaft, 17... operating rod, 18... pin receiving rod, 2
1... Falling step, 22... Stop valve.

Claims

[Scope of utility model registration request]

In an earth auger device in which an earth auger or the like moves up and down guided by a disassembled leader mast 3 supported by a boom A, the mast intermediate portion 3a is pivoted by the boom A so that the forward and backward swing can be changed freely, and the boom A A hydraulic cylinder 8 is attached to the pivot main body 5 provided in the abdomen.
The rear end is pivotally connected by a horizontal pin 7, the hydraulic cylinder 8 is made rotatable around the horizontal pin 7, and a climbing surface B or an inverted climbing surface B1 that descends toward the boom side is provided on the back of the intermediate part 3a of the mast. A pin connecting portion C is provided at the end of the climbing surface or the inverted climbing surface, and when the hydraulic cylinder 8 rotates, the connecting horizontal pin 10 at the front end of the hydraulic cylinder 8 connects to the climbing surface B or the inverted climbing surface B1.
The earth auger device is configured such that the connecting horizontal pin 10 can be detachably connected to the pin connecting portion C by landing on the same surface and moving along the same plane as the hydraulic cylinder 8 expands.