JPH0184977U

JPH0184977U -

Info

Publication number: JPH0184977U
Application number: JP1987179297U
Authority: JP
Priority date: 1987-11-24
Filing date: 1987-11-24
Publication date: 1989-06-06

Description

[Brief explanation of the drawing]

第１図はこの考案のトルクレンチの締付制御装
置の一実施例を適用したパルスレンチの縦断面図
、第２図は第１図の−線断面図、第３図は第
１図の要部拡大図、第４図はロータ軸の部分断面
側面図、第５図は慣性部材の部分断面側面図、第
６図は上記パルスレンチ内のエア回路模式図、第
７図は従来装置の一部切欠き正面図である。２……エアモータ、７……給気通路、１５……
回転主軸、２２……制御弁（第２開閉弁）、２３
……排気弁（第１開閉弁作動手段）、２４……エ
アタンク、２５……遮断弁（第１開閉弁）、５１
……ロータ軸、５２……慣性部材、５６，５７，
５８……カム機構。 Fig. 1 is a longitudinal sectional view of a pulse wrench to which an embodiment of the tightening control device for a torque wrench of this invention is applied, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a main part of Fig. 1. 4 is a partially sectional side view of the rotor shaft, FIG. 5 is a partially sectional side view of the inertial member, FIG. 6 is a schematic diagram of the air circuit inside the pulse wrench, and FIG. 7 is a part of the conventional device. FIG. 3 is a partially cutaway front view. 2... Air motor, 7... Air supply passage, 15...
Rotating main shaft, 22... Control valve (second on-off valve), 23
...Exhaust valve (first on-off valve operating means), 24...Air tank, 25...Shutoff valve (first on-off valve), 51
...Rotor shaft, 52...Inertia member, 56, 57,
58...Cam mechanism.

Claims

[Scope of utility model registration request]

The rotor shaft rotates in conjunction with the rotational main shaft of the torque wrench's air motor, and the rotor shaft is placed coaxially with this rotor shaft, engages with the rotor shaft in the rotational direction, and rotates, and when the rotor shaft decelerates, it uses inertia force. an inertial member that rotates relative to the rotor shaft; and a cam mechanism that engages the rotor shaft and the inertial member in the axial direction during the relative rotation of the inertial member and moves the inertial member in the axial direction with respect to the rotor shaft. an air supply passage that supplies air to the air motor, and a first air supply passage that is interposed in the air supply passage and that is capable of opening and closing the air supply passage.
an on-off valve, an air tank, a branch passage that branches from the air supply passage upstream of the first on-off valve and communicates with the air tank, and is interposed in the branch passage and is capable of opening and closing the branch passage. a second on-off valve, the second on-off valve is configured to open when the inertial member comes into contact with the inertial member when the inertial member moves, and further between the air tank and the first on-off valve, A tightening torque wrench characterized in that a first on-off valve operating means is provided for closing the first on-off valve when the pressure rising in the air tank due to opening of the second on-off valve reaches a predetermined pressure. With control device.