JPH03118995U

JPH03118995U -

Info

Publication number: JPH03118995U
Application number: JP2851290U
Authority: JP
Priority date: 1990-03-20
Filing date: 1990-03-20
Publication date: 1991-12-09

Description

[Brief explanation of drawings]

第１図ないし第３図は本考案に係る天井クレー
ンの一実施例を示すもので、第１図は動力伝達機
構の概略構成図、第２図は第１図の−線矢視
図、第３図は動力伝達機構の動作を説明するため
の図であつて、このうちイは通常時の動作、ロは
救援時の動作をそれぞれ示す。第４図は従来一般
の天井クレーンの全体概略構成を示す平面図であ
る。１……軌道、２……クレーン本体、３……トロ
リ、１０……常用のモータ、１０ａ……回転軸、
１１……救援用のモータ、１１ａ……回転軸、１
２……動力伝達機構、１３，１４……ブレーキ、
２０……ピニオン、２１……太陽ギヤ、２２……
遊星ギヤ、２３……アーム、２４……リングギヤ
、２５……ピニオン、２６……ギヤ、２７……出
力軸。 1 to 3 show an embodiment of an overhead crane according to the present invention, in which FIG. 1 is a schematic configuration diagram of a power transmission mechanism, FIG. 2 is a view taken along the - arrow in FIG. FIG. 3 is a diagram for explaining the operation of the power transmission mechanism, in which A shows the normal operation and B shows the rescue operation. FIG. 4 is a plan view showing the overall schematic configuration of a conventional general overhead crane. 1... Track, 2... Crane body, 3... Trolley, 10... Commonly used motor, 10a... Rotating shaft,
11... Rescue motor, 11a... Rotating shaft, 1
2... Power transmission mechanism, 13, 14... Brake,
20...pinion, 21...sun gear, 22...
Planetary gear, 23...arm, 24...ring gear, 25...pinion, 26...gear, 27...output shaft.

Claims

[Scope of utility model registration request]

While traveling along the track, a trolley equipped with a hoist is made to traverse in a direction perpendicular to the traveling direction, and a motor for traveling, a motor for traversing, and a motor for the hoist are respectively provided. In the overhead crane equipped with the above-mentioned motor, a motor for rescue in the event of a failure is installed in parallel with each of the motors, and the rotating shafts of both of the parallelly installed motors are connected to the output shaft via a power transmission mechanism. The power transmission mechanism is
A pinion fixed to the rotating shaft of one motor,
a sun gear fixed to the rotating shaft of the other motor;
A planet gear meshes with the sun gear and rotates around it, the pinion meshes with the outer periphery and the planet gear meshes with the inner periphery, and the planet gear rotates about a common axis with the sun gear. a ring gear; and an arm that connects the sun gear and the planetary gears, rotates together with the planetary gears about the rotation center axis of the sun gear, and is connected to the output shaft; is an overhead crane characterized in that each of its rotating shafts is equipped with a brake to prevent it from idling.