JPS58123878U

JPS58123878U - Futsk block

Info

Publication number: JPS58123878U
Application number: JP1809582U
Authority: JP
Inventors: 小村　利夫
Original assignee: 日立建機株式会社
Priority date: 1982-02-13
Filing date: 1982-02-13
Publication date: 1983-08-23

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案に係わるフックブロックの正面図、第２
図は第１図の断面図、第３図及び第４図は従来のフック
ブロックにおけ・るフック軸部とナツトとの螺合部構造
を示す断面図、第５図４よ第３図の詳細断面図、第６図
は第４図の詳細断面図、第７図は本考案フックブロック
におけるフック軸部とナツトとの螺合部構造を示す詳細
断面図、第８図及び第９図は第７図におけるナツトを所
定位置にセットする構成の一例を示す断面図である。１・・・フックブロック本体を構成するプレート、５・
・・トラニオン、６・・・フック、６ａ・・・フックの
軸部、７・・・ナツト、８・・・軸受、ｄ・・・雌ねじ
の最下部ねじ山、ｅ、　　ｇ・・・雄ねじの完全ねじ山
。Figure 1 is a front view of the hook block according to the present invention, Figure 2
The figure is a cross-sectional view of Figure 1, Figures 3 and 4 are cross-sectional views showing the structure of the screwed part between the hook shaft and the nut in a conventional hook block, and Figures 5 and 4 are the same as those shown in Figures 3 and 4. 6 is a detailed sectional view of FIG. 4, FIG. 7 is a detailed sectional view showing the structure of the screwing part between the hook shaft and the nut in the hook block of the present invention, and FIGS. 8 and 9 are FIG. 8 is a sectional view showing an example of a configuration for setting the nut in FIG. 7 at a predetermined position. 1... Plate that constitutes the hook block body, 5.
... Trunnion, 6... Hook, 6a... Hook shaft, 7... Nut, 8... Bearing, d... Bottom thread of female thread, e, g... Male thread Fully threaded.

Claims

[Scope of utility model registration request]

A trunnion is pivotally supported on the hook block body, and the hook is rotatably supported on the trunnion via a nut screwed onto the shaft of the hook and a bearing interposed between the nut and the trunnion. In a hook block in which the nut has a male thread and the nut has a female thread, the length of the male thread on the shaft of the hook is appropriately longer than the length of the male thread of the nut, and the nut has a male thread on the shaft of the hook. When screwed into the male thread and set in a predetermined position, the lower end surface of the male thread is located below the lower end surface of the female thread, and the male thread is located at the bottom of the complete thread that contacts the lowest thread of the female thread in the male thread. A hook block characterized by being configured so that a complete thread exists.