JPH1067489A - Hoist - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a drum from being dropped by supporting the drum by means of a drum support member even if a bracket supporting a drum is taken out in replacing a takeup motor. SOLUTION: A bracket 38 fixed to a frame 2 on the side of a body case 21 by means of a bolt 39 has a flange part 38a to be an integrated body. One end of a drum 15 is supported to be rotatable onto the bracket 38 through a bearing 16. To the case 21 the bracket 38 is fixed by means of a bolt 40. To the drum 15 of the base body case 21 at a lower part of its end a drum support part 42 is fixed by means of a bolt 41. In this hoist, even if the whole, i.e., to the bracket 38 is removed in replacing a takeup motor 1, the end of the drum 15 can be supported by the part 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoist and, more particularly, to a drum supporting structure.

[0002]

2. Description of the Related Art FIG. 2 is a longitudinal sectional view of a conventional hoist, 1 is a hoisting motor, and a bracket 3 is attached to one end of a frame 2 and a flange 4 is connected to the other end of the frame 2. Bracket 5 is attached. Reference numeral 6 denotes a rotating shaft, which is rotatably supported by brackets 3 and 5 via bearings 7 and 8. A rotor 9 is mounted on the rotating shaft 6, and a stator 10 is mounted inside the frame 2. An intermediate shaft 11 has one end connected to the rotation shaft 6 via the first coupling 12 and the other end connected to the rotation shaft 14 of the reduction unit 20 via the second coupling 13. A drum is provided around the intermediate shaft 11 and has one end rotatably supported by the bracket 5 via a bearing 16. A rope 19 for lifting a load is wound around the drum 15 via a hook (not shown). ing.

In the speed reducer 20, a plurality of gears and the like are connected to the rotating shaft 14 in a speed reducer case 18, and the output shaft 2
0a is rotatably supported by a speed reduction unit case 18 via a bearing 17 and protrudes into the drum 15;
Is connected to the connecting portion 15a provided at the other end of the. Reference numeral 21 denotes a main body case for accommodating the drum 15, the bracket 5 is fastened to one end of the main body case 21 by a bolt 22, the flange 4 and the bracket 5 are fastened by a bolt 23, and the other end of the drum case 21 is 24 tightens the speed reducer case 18. 36
Is a bearing for the rotating shaft 14, and 37 is a bolt for attaching the flange 4 to the frame 2.

[0004] Two brake wheels 25 are movably fitted to a spline portion 14 a formed at the end of the rotary shaft 14, and a guide shaft 26 is fitted to the end of the speed reducer case 18.
The guide shaft 26 has a brake disc 27,
28 and the movable core 29 are slidably inserted. An armature 30 is attached to the tip of the guide shaft 26, and an adjustment screw 31 is screwed to the armature 30. 32 is an adjustment handle attached to the amateur 30. Reference numeral 33 denotes a fixed core formed at the end of the reduction unit case 18, and a coil 34 is provided around the fixed core 33. Reference numeral 35 denotes a brake spring provided around the guide shaft 26 between the end of the speed reduction unit case 18 and the movable core 29, and these constitute a brake unit 43.

Next, the operation of the hoist having the above configuration will be described. When the rotating shaft 2 of the hoisting motor 1 is rotated, the rotation is transmitted to the rotating shaft 14 via the intermediate shaft 11 and
It is decelerated at 0 and transmitted to the drum 15. Therefore, rope 1
2 can be moved up and down.
At this time, the coil 34 is excited so that the rotating shaft 14 is not braked, and the movable core 29
Is adsorbed to the fixed core 33, and the brake wheel 25 and the brake disks 27 and 28 are separated from each other. Here, when the excitation of the coil 34 is stopped, the movable core 29 is pressed by the brake spring 35 and moves leftward, the brake wheel 25 and the brake disks 27 and 28 are pressed against each other, and The drum 15 is braked.

[0006]

In the hoist having the above structure, the reduction unit 20 is replaced after the hoist is lowered on the floor, but the hoisting motor 1 may be replaced while the hoist is mounted. . That is, the main body case 21, the frame 2, and the reduction unit case 18 are supported by a traveling unit. The traveling unit travels along a traveling unit provided on the ceiling. When removing the upper motor 1, remove the drum 1 up to the bracket 5.
Since the bracket 5 may fall into the spigot portion of the main body case 21 to make reassembly difficult, the bracket 5 needs to be attached to the main body case 21 in advance. Therefore, when the hoisting motor 1 is removed, the bracket 3 is removed and the rotating shaft 6 and the rotor 9 are pulled out, and the rotor 9 and the stator 10 may hit each other and damage them. or,
The same was true when inserting the rotor 9 during reassembly. Further, since the frame 2 of the hoisting motor 1 is attached to the main body case 21 via the flange 4 and the bracket 5, disassembly and assembly are not easy, and the manufacturing cost is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is intended to prevent the drum from falling and the rotor and the stator from being damaged when the hoisting motor is replaced, and to disassemble the hoisting motor. An object of the present invention is to obtain a hoist that can be easily assembled and manufactured.

[0008]

In the hoist according to the present invention, the main body case of the hoisting motor and the bracket on the mounting side are integrally formed with the flange, and the drum is prevented from dropping when the flange is removed. The drum support member for performing the operation is attached to the main body case.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a main part of a hoist according to an embodiment of the present invention. Reference numeral 38 denotes a bracket attached to a main body case 21 side of a frame 2 by bolts 39. The bracket 38 has a flange portion 38a. It is an integral bracket. Drum 1
One end of 5 is rotatably supported by a bracket 38 via a bearing 16. Also, the main body case 21 has a bolt 40.
The bracket 38 is attached by the. further,
A bolt 4 is provided below the end of the drum 15 of the main body case 21.
1, the drum support member 42 is attached. Other configurations are the same as the conventional one.

In the hoist having the above-described structure, the end of the drum 15 is supported by the drum supporting member 42 even when the hoist motor 1 is replaced when the hoist is removed, that is, even when the bracket 38 is removed. Is done. This facilitates replacement of the hoisting motor 1 and
Damage to the rotor 9 and the stator 10 can be prevented. Further, since the bracket 38 is formed integrally with the flange, the manufacture, assembly, and disassembly of the hoisting motor 1 are facilitated.

[0011]

As described above, according to the present invention, the drum is supported by the drum supporting member even if the bracket for supporting the drum is removed when the hoisting motor is replaced. This facilitates replacement of the hoisting motor and prevents damage to the rotor and stator. Further, since the bracket for supporting the drum is formed integrally with the flange, the manufacture, disassembly and assembly of the hoisting motor become easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a hoist according to the present invention.

FIG. 2 is a longitudinal sectional view of a conventional hoist.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hoisting motor 2 ... Frame 3, 38 ... Bracket 6, 14 ... Rotating shaft 11 ... Intermediate shaft 15 ... Drum 15a ... Connection part 16, 17 ... Bearing 18 ... Reduction gear case 19 ... Rope 20 ... Reduction gear 20a ... Output shaft 21 Body case 24, 40, 41 Bolt 38a Flange 42 Drum support member 43 Brake

Claims (1)

[Claims] 1. A hoisting motor having a bracket attached to one end of a frame and a bracket integral with a flange attached to the other end of the frame, and a rotating shaft connected to a rotating shaft of the hoisting motor via an intermediate shaft. A deceleration unit for decelerating the rotation of the intermediate shaft, disposed around the intermediate shaft, connected to the output shaft of the reduction unit, and rotatably supported by a bracket integral with the flange of the hoisting motor; and A drum wound with ropes for suspending luggage, a main body case accommodating the drum and accommodating a reduction unit case and a bracket integrated with the flange, and a rotating shaft of the reduction unit case and the reduction unit. A hoist, comprising: a brake unit provided for braking the rotating shaft; and a drum support member attached to the main body case to prevent the drum from dropping.