JPH0278265U

JPH0278265U -

Info

Publication number: JPH0278265U
Application number: JP15884388U
Authority: JP
Priority date: 1988-12-06
Filing date: 1988-12-06
Publication date: 1990-06-15
Anticipated expiration: 2003-12-06
Also published as: JPH0634944Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例の側断面図、第２図
は本考案の他の実施例の一部切欠側断面図、第３
図は従来例を示す側断面図である。２はフランジ、４はナツトランナ、５はボルト
支持アーム、６はケーシング、７はモータ、１４
，２５はギア、１５は歯車伝動機構、１８，３０
はソケツト、１９，４１はナツト、２０，２８は
ナツト嵌合穴、２１，４２はボルト、２３，４０
はボルト嵌合穴、２４はボルト孔、２７は嵌挿穴
、３９，４６は摩擦式回転伝達機構を示す。 Figure 1 is a side sectional view of one embodiment of the present invention, Figure 2 is a partially cutaway side sectional view of another embodiment of the present invention, and Figure 3 is a side sectional view of another embodiment of the present invention.
The figure is a side sectional view showing a conventional example. 2 is a flange, 4 is a nut runner, 5 is a bolt support arm, 6 is a casing, 7 is a motor, 14
, 25 is a gear, 15 is a gear transmission mechanism, 18, 30
is a socket, 19, 41 is a nut, 20, 28 is a nut fitting hole, 21, 42 is a bolt, 23, 40
24 is a bolt hole, 27 is a fitting hole, and 39 and 46 are frictional rotation transmission mechanisms.

Claims

[Claims for Utility Model Registration] (1) Capable of moving forward and backward on both sides of a flange having a plurality of bolt holes and close to each other across the flange;
A nut runner and a bolt support arm are arranged so that they can be separated, and the nut runner is equipped with a socket for final tightening which is rotated by a motor at a rated torque via a gear transmission mechanism, and a torque smaller than the rated torque can be transmitted. Through a friction type rotation transmission mechanism, the socket for final tightening of the gear transmission mechanism and a socket for temporary tightening that is rotatably fitted into the gear rotating in the same direction are connected to each socket of the gear transmission mechanism. A nut fitting hole is arranged so that the axis of rotation can coincide with the center of each of the bolt holes, and a nut can be inserted into the hole about the axis of rotation of each socket on the surface facing the bolt support arm of each socket. At the same time, a bolt fitting hole having a center on the extension of the rotational axis of each socket and into which the head of the bolt can be freely inserted is formed in the face of the bolt support arm facing the each socket. A bolt fastening machine featuring: (2) The bolt fastening machine according to claim 1, wherein the socket for temporary tightening is made to protrude toward the bolt support arm side by a required amount from the socket for final tightening. (3) The bolt fastening machine according to claim 1, wherein the number of teeth of the gear into which the temporary tightening socket is inserted is smaller than the number of teeth of the final tightening socket.