JPH044940U

JPH044940U -

Info

Publication number: JPH044940U
Application number: JP4589390U
Authority: JP
Priority date: 1990-04-27
Filing date: 1990-04-27
Publication date: 1992-01-17
Anticipated expiration: 2005-04-27
Also published as: JPH0752187Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１の実施例を示すリアバケ
ツトの上部前面に設けた弾性カバー等の要部縦断
面図、第２図は第２の実施例を示す第１図と同様
の要部縦断面図、第３図ないし第９図は従来技術
を示し、第３図はローダバケツトを備えた油圧シ
ヨベルの作業装置を示す外観図、第４図はローダ
バケツトの側面図、第５図は第４図の正面図、第
６図はリアバケツトの正面図、第７図はフロント
バケツトの側面図、第８図はフロントバケツトの
腕部を示す部分拡大図、第９図は開閉シリンダの
動作を示す動作説明図、第１０図ないし第１２図
は他の従来技術を示し、第１０図はリアバケツト
の上部前面に設けた弾性カバー等を示す部分正面
図、第１１図はフロントバケツトを取付けた状態
を示す第１０図中の矢示−方向断面図、
第１２図はフロントバケツトの回動状態を示す第
１１図と同様の断面図である。６……ボトムダンプ式ローダバケツト、７……
リアバケツト、７Ａ……後面、７Ｂ……前面、８
……フロントバケツト、８Ａ，８Ａ……側板、９
……ボトムダンプシリンダ（開閉シリンダ）、１
５……シリンダ収容部、１８……前面開口部（開
口部）、２０，４０……腕部、３１，５１……弾
性カバー、３１Ａ，５１Ａ……固定端、３１Ｂ，
５１Ｂ……自由端、４１……傾斜突起部、θ……
当接角。 Fig. 1 is a vertical cross-sectional view of essential parts such as an elastic cover provided on the upper front surface of a rear bucket trunk showing a first embodiment of the present invention, and Fig. 2 is a main part similar to Fig. 1 showing a second embodiment. 3 to 9 show the prior art, FIG. 3 is an external view of a working device of a hydraulic excavator equipped with a loader bucket, FIG. 4 is a side view of the loader bucket, and FIG. Figure 6 is a front view of the rear bucket, Figure 7 is a side view of the front bucket, Figure 8 is a partially enlarged view of the arm of the front bucket, and Figure 9 shows the operation of the opening/closing cylinder. Figures 10 to 12 show other conventional techniques; Figure 10 is a partial front view showing the elastic cover provided on the upper front surface of the rear bucket trunk, and Figure 11 shows the front bucket trunk installed. A sectional view in the direction of the arrow in FIG. 10 showing the state,
FIG. 12 is a sectional view similar to FIG. 11 showing the rotating state of the front bucket. 6...Bottom dump type loader bucket, 7...
Rear bucket, 7A...rear, 7B...front, 8
...Front bucket, 8A, 8A...Side plate, 9
...Bottom dump cylinder (opening/closing cylinder), 1
5... Cylinder housing part, 18... Front opening (opening), 20, 40... Arm part, 31, 51... Elastic cover, 31A, 51A... Fixed end, 31B,
51B...Free end, 41...Slanted protrusion, θ...
Contact angle.

Claims

[Scope of Claim for Utility Model Registration] (1) A rear bucket which has a pair of cylinder accommodating parts on both the left and right sides, and an opening formed in the upper front side of each cylinder accommodating part, and the left and right side plates. A front bucket trunk is attached to the rear bucket trunk so as to be openable and closable via a pair of arms provided on the upper end side, and the tip side of each arm is inserted into the upper part of each cylinder accommodating part through each opening of the rear bucket trunk. and disposed within each cylinder accommodating portion of the rear bucket,
A bottom dump type loader bucket comprising a pair of opening/closing cylinders whose upper ends are rotatably connected to the distal end of each arm of the front bucket in order to open and close the front bucket with respect to the rear bucket. a fixed end whose lower end side is fixed to the upper front surface of the rear bucket trunk so as to be located below each arm of the front bucket trunk and partially cover each opening;
A pair of elastic covers are provided, the upper end of which is a free end that abuts the lower surface of each arm of the front bucket;
The lower surface of each arm of the front bucket abuts the free end of each elastic cover at an angle of less than 90 degrees, and when the front bucket is opened from the rear bucket, the free end of each elastic cover A bottom dump type loader bucket, characterized in that each side is provided with an inclined protrusion that presses the side toward the outside of each of the cylinder accommodating parts. (2) A rear bucket with a pair of cylinder accommodating parts provided on both left and right sides, and an opening formed on the upper front side of each cylinder accommodating part, and a pair of cylinder accommodating parts provided on the upper end side of the left and right side plates. a front bucket holder which is attached to the rear bucket holder so as to be openable and closable via an arm, and a front end of each arm is inserted into the upper part of each cylinder accommodating part through each opening of the rear bucket holder, and each cylinder accommodating part of the rear bucket holder; Located within the department,
A bottom dump type loader bucket comprising a pair of opening/closing cylinders whose upper ends are rotatably connected to the distal end of each arm of the front bucket in order to open and close the front bucket with respect to the rear bucket. is provided with a pair of elastic covers located below each arm of the front bucket and partially covering each opening,
Each of the elastic covers has a lower end that is a fixed end that is fixed to the upper front surface of the rear bucket trunk, and an upper end that is a free end that abuts the lower surface of each arm of the front bucket trunk at an angle smaller than 90 degrees. A bottom dump type loader bucket characterized in that it is bent in advance into a substantially dogleg shape so that it is pressed outward of each cylinder accommodating part by each arm part.