JP2002153009A - Peripheral driving motor and belt conveyor using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving source which is easily installed on equipment, such as a conveyor, and enables space saving. SOLUTION: A belt conveyor comprises a rotary body 2 which is coupled directly with an output shaft 1a of a motor 1 and placed with a gap between the rotary body and the periphery of the motor 1, bearing-holding bodies 3 and 4 placed at the openings at both the ends of the rotary body 2, bearings 5 and 6 placed in the bearing holding bodies 3 and 4, and motor-mounting bodies 7 and 8 that rotatably support the rotary body 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer peripheral drive type electric motor serving as a drive source for a belt conveyor or the like.

[0002]

2. Description of the Related Art Conventionally, as a driving source of a belt conveyor, a pulley or a gear is attached to an output shaft of a motor,
The flat belt is driven by rotating the drive shaft of the belt conveyor body via a belt or a chain.

[0003]

However, when the above-mentioned conventional electric motor is mounted on the belt conveyor body, the flat belt becomes an obstacle, and the electric motor is mounted outside the belt. For this reason, the electric motor portion jumps out and becomes a dead space, and it was not possible to meet the market demand for space saving.

On the other hand, it is conceivable to use an external rotation type electric motor as the outer periphery driving type electric motor. However, many external rotation type electric motors which use the outer periphery of the rotor as an output (drive source) have a cantilever structure, and a mounting structure of the electric motor. Moreover, it was not suitable as a driving source for a belt conveyor.

[0005] That is, the motor is attached to the device only on the side opposite to the rotor, and the bearing on the output shaft side receives belt tension (radial load). For this reason, in order to make the flat belt run stably, it is necessary to finely adjust the outer peripheral driving surface of the device every time, or to extend the output shaft of the electric motor and to support the device with a bearing on the device. .

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a drive source that can be easily mounted on a device and that can save space.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an electric motor, a rotating body directly connected to an output shaft of the electric motor and arranged with a gap from the outer periphery of the motor, A bearing holder provided at the opening at both ends; a bearing provided at the bearing holder; and an electric motor mount fixed to the bearing inner ring and rotatably supporting the rotating body.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to solve the above-mentioned problems, the present invention provides an electric motor, a rotating body directly connected to an output shaft of the electric motor, and disposed with a gap from the outer periphery of the motor, and both ends of the rotating body. A bearing holder provided in the opening, a bearing provided in the bearing holder, and a motor mounting body fixed to the bearing inner ring and rotatably supporting the rotating body; This facilitates attachment to equipment. Also,
Since the electric motor is housed in the rotating body, space can be saved.

Further, when the motor is a geared motor, the rotating body can be driven at a low speed and a high torque.

Further, when the motor lead wire is taken out from the inside of the motor mounting body on the side opposite to the output shaft, the wire processing work of the motor lead wire can be facilitated at the time of mounting.

Further, in the case where a concave portion or a convex portion is provided on the outer surface of the rotating body, a load such as tension of the flat belt acts on the concave portion or the convex portion, so that the flat belt or the like can be driven stably. Providing the unevenness is also effective in preventing the flat belt from shifting in the left-right direction.

Further, if the flat belt of the belt conveyor is driven by the above-described rotating body of the outer peripheral drive type electric motor, it can be easily mounted on the belt conveyor and the space for the driving source can be saved.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) In FIG. 1, 1 is an electric motor (induction motor), 2 is a rotating body, both ends are open,
On the inside, there is provided a connecting portion 2a for connecting to the output shaft of the electric motor 1. Reference numerals 3 and 4 denote bearing holders which are fixed to the opening of the rotating body 2 with screws. Reference numerals 5 and 6 denote bearings, and reference numerals 7 and 8 denote motor mounting bodies, each of which has a hole through which the motor lead wire 1c can pass and a screw portion for fixing to the drive device. Reference numeral 9 denotes a bearing support, and reference numeral 10 denotes a belt conveyor, which is a driving device, and shows only a mounting portion of an outer peripheral driving motor.

First, the connecting portion 2a between the output shaft 1a of the electric motor 1 and the rotating body 2 is fixed by shrink fit or D cut, keyway, spline or the like so as not to run idle. Next, the inner ring of the bearing 5 is mounted on the bracket 1b on the side opposite to the output shaft of the electric motor 1 and the bearing holder 3 is mounted between the rotating body 2 and the outer ring of the bearing 5. Secure with screws in the opening.

Next, the inner ring of the bearing 6 is fixed to the bearing support 9, and the outer ring of the bearing 6 is fixed to the bearing holder 4. here,
The bearing holder 4 is attached to the opening on the opposite side of the rotator 2, but in order to drive the rotator 2 more stably, the connecting portion 2
A bearing is mounted on the outer side of a, and the bearing is connected to the bearing by projecting the side opposite to the threaded portion of the bearing support 9.

Further, the motor mounting body 7 is attached to the bracket 1b.
, The motor lead wire 1c is passed through the hole of the motor mounting body 7. By fixing the motor mounting body 8 to the bearing support 9 with screws, an outer peripheral drive type motor is obtained.

Thereafter, a flat belt is directly wrapped around the outer periphery of the rotating body 2 of the outer peripheral drive type electric motor, and is fixed to the drive device 10 (belt conveyor) with the nuts using the screw portions of the electric motor mounting members 7 and 8. The installation of the outer peripheral drive motor is completed.

When the motor 1 is driven with the motor mounts 7 and 8 fixed, the rotating body 2 directly connected to the output shaft 1a
Since the bearings are supported by the bearings 4 and 5 and the motor mounting bodies 7 and 8, even if there is belt tension or the like, the motor 1 can be rotated while maintaining a gap with the motor 1.

As the electric motor, an induction motor is generally used because it is inexpensive and a variable speed can be easily obtained. However, the present invention is not limited to this.

The bearing support and the motor mount may be integrally formed, or the bracket on the side opposite to the output shaft of the motor and the motor mount may be formed integrally. Further, the motor mounting body may be configured to be stepped, and the bearing may be supported at the stepped portion, but the shape of the bracket bottom needs to be changed. It goes without saying that these are mounted on the rotation axis of the electric motor in a centered manner.

Further, by making the motor lead wire pass through the motor mounting body, the workability of attaching to the drive device and the line processing work become easy, but it is not always necessary to pass through the motor mounting body.

(Embodiment 2) In Embodiment 2, the electric motor is changed to a geared motor.

In FIG. 2, reference numeral 21 denotes a geared motor.
The output shaft 21a is provided at the center of the geared motor.
Reference numeral 22 denotes a rotating body, and a concave portion 22 a is provided on an outer peripheral portion of the rotating body 22. Except that the output shaft 21a of the geared motor 21 is fixed to the connecting portion of the rotating body 22, and that the lead wire is drawn out from the side surface of the motor mounting body, it is the same as the first embodiment, and the description is omitted.

When the flat belt is driven around the outer periphery of the rotating body 22, the tension of the flat belt acts on the concave portion 22a, and the flat belt runs stably on the outer periphery of the rotating body 22 without meandering.

Further, by using a geared motor as the electric motor, a low speed and a high torque can be obtained, and the flat belt is directly driven by the rotating body, so that the space can be saved, and the outer periphery which is optimal as a driving source for the belt conveyor can be obtained. Drive type electric motor.

A similar effect can be obtained by using a convex portion instead of the concave portion, and the same effect may be applied to the first embodiment. Also, as in the first embodiment, the lead wire is pulled out from the motor mounting body. You may.

[0028]

As is apparent from the above embodiment, according to the first aspect of the present invention, it is easy to mount the apparatus on a driving device such as a belt conveyor, and it is not necessary to secure a mounting space dedicated to the electric motor. Space can be provided.

According to the second aspect of the present invention, the rotating body can be driven at a low speed and a high torque.

According to the third aspect of the present invention, the mounting work and the wire processing work of the motor lead wire can be facilitated.

According to the fourth aspect of the present invention, the flat belt or the like can be driven stably by the concave portion (or the convex portion) provided in the rotating body.

Further, according to the fifth aspect of the present invention, if the outer peripheral drive type electric motor described in the present application is used as a drive source for a belt conveyor, the motor can be easily mounted on the belt conveyor and the space for the drive source can be reduced. it can.

Therefore, it is possible to obtain a drive source that can be easily attached to a device such as a conveyor and can save space.

[Brief description of the drawings]

FIG. 1 is a sectional view of an outer peripheral drive type electric motor according to a first embodiment of the present invention.

FIG. 2 is a sectional view of an outer peripheral drive type electric motor according to a second embodiment of the present invention.

[Explanation of symbols]

 1,21 motor (geared motor) 1a, 21a output shaft 1c motor lead wire 2,22 rotating body 2a connecting part 3,4 bearing holder 5,6 bearing 7,8 motor mounting body 10 drive unit (belt conveyor) 22a recess (Convex)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F033 GA02 GB08 GD09 GE05 5H605 AA07 BB05 BB12 CC03 CC05 CC08 CC09 CC10 DD09 EA30 GG04 GG06 5H607 AA12 BB01 BB14 BB20 BB26 CC03 CC05 CC09 DD10 DD19 EE21 EE36 FF11

Claims (5)

[Claims] 1. A motor, a rotating body directly connected to an output shaft of the motor, and arranged with a clearance from an outer periphery of the motor, a bearing holder arranged at both ends of the rotating body, and the bearing holder. An outer peripheral drive type electric motor comprising: a bearing disposed on a body; and an electric motor mounting body fixed to the bearing inner ring and rotatably supporting a rotating body. 2. The motor according to claim 1, wherein the electric motor is a geared motor.
An outer peripheral drive type electric motor as described in the above. 3. The outer peripheral drive type electric motor according to claim 1, wherein the motor lead wire is taken out of the motor mount on the side opposite to the output shaft. 4. The outer peripheral drive type electric motor according to claim 1, wherein a concave portion or a convex portion is provided on an outer surface of the rotating body. 5. A belt conveyor for directly driving a flat belt by a rotating body of an outer peripheral drive type electric motor according to any one of claims 1 to 4.