JPS63145948U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案にかかるピン固定装置の第１
実施例断面図、第２図は第１図のＤより見た側面
図、第３図および第４図はピンの斜視図、第５図
は第１実施例断面図、第６図は第２実施例の要部
断面図、第７図は第６図のＥ―Ｅより見た側面図
、第８図はバツクホーフロント先端部分の側面図
、第９図は第８図のＡ―Ａより見た従来技術ピン
固定装置の側面図、第１０図は他の従来技術ピン
固定装置の断面図、第１１図は第１０図内ストツ
パリングのＣより見た側面図である。 １……アーム、２……バケツト、３，３ａ，３
′，１３……ピン、４，４′，４″，１６……ま
わり止めボス、１１……ロツクピン、１２，１４
……リングばね。 Figure 1 shows the first pin fixing device according to this invention.
Embodiment sectional view, FIG. 2 is a side view seen from D in FIG. 1, FIGS. 3 and 4 are perspective views of the pin, FIG. 5 is a sectional view of the first embodiment, and FIG. A sectional view of the main parts of the embodiment, FIG. 7 is a side view taken from EE in FIG. 6, FIG. 8 is a side view of the tip of the front end of the boxhoe, and FIG. 9 is taken from A-A in FIG. 8. FIG. 10 is a sectional view of another prior art pin fixing device, and FIG. 11 is a side view of the stopper ring seen from C in FIG. 10. 1... Arm, 2... Bucket, 3, 3a, 3
', 13... Pin, 4, 4', 4'', 16... Rotating boss, 11... Lock pin, 12, 14
...Ring spring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] アームの先端にバケツトをピンにより回動自在
に取付けた油圧シヨベルにおいて、上記ピンの頭
部直径方向にロツクピン挿入用貫通穴または切込
溝を設け、また、ピン挿入時のピン頭部側バケツ
ト外側部にまわり止めボスを固定して設け、その
まわり止めボスの内径部軸心方向にまわり止め凹
溝を設け、かつ、まわり止めボス内径部の内周に
わたつて内周凹溝を設け、ピン装着時にピン頭部
のロツクピン挿入用貫通穴または切込溝に、ピン
頭部直径より全長の大なるロツクピンを嵌挿し、
そのロツクピン先端突出部を上記まわり止めボス
のまわり止め凹溝に嵌込ませるとともに、まわり
止めボスの内周凹溝にリングばねを嵌着して構成
したことを特徴とする油圧シヨベルのピン固定装
置。 In a hydraulic excavator in which a bucket is rotatably attached to the tip of the arm with a pin, a through hole or cut groove for inserting the lock pin is provided in the diametrical direction of the head of the pin, and a through hole or cut groove is provided on the outside of the bucket on the pin head side when the pin is inserted. A locking boss is fixedly provided in the pin, a locking groove is provided in the axial direction of the inner diameter of the locking boss, and an inner peripheral groove is provided along the inner circumference of the inner diameter of the locking boss. When installing, insert a lock pin with a longer overall length than the pin head diameter into the lock pin insertion through hole or cut groove on the pin head,
A pin fixing device for a hydraulic excavator, characterized in that the protruding end portion of the lock pin is fitted into the rotation prevention groove of the rotation prevention boss, and a ring spring is fitted into the inner peripheral groove of the rotation prevention boss. .