JP2003312831A - Roller conveyor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce noise by absorbing vibration of a roller drive part including a motor, and fix the motor easily. <P>SOLUTION: A motor roller (motor) 16 of which outer circumferential surface is covered with shock absorbing material 17 such as rubber is contained in a cross member 8b installed on a lower surface of a frame 7, and the motor roller 16 is fixed by a presser plate 25 fixed to an upper surface of the cross member 8b through the shock absorbing material 17. Vibration of the motor roller 16 is absorbed by the shock absorbing material 17, and the motor roller 16 can be easily fixed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller driving type roller conveyor device, and more particularly to a roller conveyor device which reduces vibrations generated by a roller driving portion and allows a motor to be mounted easily and firmly. Regarding

[0002]

2. Description of the Related Art A motor roller with a built-in motor is used in a small-sized portable roller conveyor device, and a motor housing is rotated by fixing a rotary shaft of the motor to a frame and fixed to a side end thereof. There is one in which each roller is rotationally driven by a belt wound around a pulley.

[0003]

As described above, when the rotation shaft of the motor roller is fixed to the frame and the motor housing is rotated, the rotational vibration of the motor housing is transmitted to the cross member or the frame to which the motor roller is attached. Therefore, there is a problem that a large vibration noise is generated.

In addition, every time the belt is replaced, the rotating shaft of the motor must be removed from the frame, which makes the belt replacement work complicated.

In order to solve such a problem, it is considered that the motor housing is fixed and each roller is driven by a pulley attached to the rotary shaft of the motor and a belt wound around the pulley.

However, in this case, the method of fixing the motor housing becomes a problem, and it is necessary to fix the bracket to the outer peripheral surface of the motor housing to firmly mount it on the cross member or the like, which makes the mounting work troublesome. .

Further, although the vibration noise directly transmitted to the frame via the rotary shaft is eliminated, the vibration of the motor and the pulley is still transmitted to the cross member, so that the vibration is generated from the cross member and the frame to which it is fixed. Noise is emitted.

The present invention has been made to solve the above problems, and absorbs the vibration of the roller driving portion including the motor to reduce the vibration noise generated from the frame and the like, and to make the motor simple and robust. It is an object of the present invention to provide a roller conveyor device which can be attached to a roller conveyor.

[0009]

In order to achieve the above object, the roller conveyor device of the present invention rotatably supports a large number of rollers between a pair of frames facing each other in parallel. In a roller conveyor device configured to drive at least a part of the rollers in association with a motor, at least a part of an outer peripheral surface of the motor is covered with a cushioning material, and the motor is driven through the cushioning material. It is characterized in that it is fixed between both frames directly below the roller by a fixing means. According to the present invention having the above-described structure, since the vibration of the motor is absorbed by the cushioning material, the vibration noise generated by the motor, the frame and the like is reduced. Further, since the motor is fixed by the fixing means via the cushioning material, it is not necessary to attach a bracket or the like to the motor.

In the above roller conveyor device, the fixing means is composed of a box-shaped cross member having an open upper surface for connecting both frames and a holding plate for covering the upper surface, and the upper surface of the motor housed in the cross member. Is preferably held immovably by a holding plate fixed to the cross member via a cushioning material. This way,
The motor can be easily fixed and the motor can be easily maintained by removing the holding plate.

In the roller conveyor device described above, it is preferable to provide a projecting piece on the inner surface of at least one of the cross member and the pressing plate so as to abut both side ends of the motor. With this configuration, the motor can be easily positioned and the motor can be prevented from moving in the axial direction of the roller.

In the above roller conveyor device, it is preferable that a plurality of heat radiating holes be formed in at least the contact area of the cross member and the pressing plate with the motor. In this way, the heat dissipation of the motor is improved, and the heat load on the motor can be reduced.

In the above roller conveyor device, it is preferable that the cushioning material is made of rubber. With this configuration, the effect of absorbing the vibration becomes large, and since the cushioning material is compressed by the fixing means, the frictional force becomes large and the motor is more firmly fixed.

In the above roller conveyor device, it is preferable to form a plurality of heat dissipation holes in the cushioning material. In this way, the heat dissipation of the motor becomes better.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of a roller conveyor device A of the present invention, and FIG. 2 is an enlarged vertical sectional front view of line II--II of FIG.
A plurality of rollers 2 that rotate around an axis line that extends in the left-right direction are rotatably supported at predetermined intervals between the pair of frames 1 and 1 in the front-rear direction (hereinafter, the right side in FIG. 1 will be referred to as the front). Is configured.

Upper ends of pedestals 3 are fixed to the lower surfaces of the front and rear ends of the left and right frames 1, and casters 4 are attached to the left and right pedestals 3 on the front side. Therefore, it can be moved by lifting the rear side.

The frame 1 is formed into a substantially pipe shape by extruding an aluminum alloy or the like, and diagonally above the outer peripheral surfaces facing each other, as shown in FIG.
The fitting groove 5 having a predetermined width is formed over the entire length in the longitudinal direction.

A roller support member 6 made of synthetic resin and having a substantially fan-shaped cross section is fitted in the fitting groove 5. The roller supporting member 6 is provided with holding grooves 7 which are detachably fitted and support the supports 2a of the respective rollers 2 and which are open at the upper side at regular intervals. As a result, the rollers 2 can be mounted between the left and right frames 1 from above, and the replacement work can be performed from above.

A plurality of box-shaped cross members 8 having an open upper surface are fixed between the lower end surfaces of the left and right frames 1, and the control members and the power supply unit (AC-DC) are connected to the slightly wide cross members 8a, 8a. A converter) (all not shown) is housed. Reference numerals 9 and 10 are start and stop buttons.

As shown in FIGS. 2 to 4, the frontmost cross member 8b has outwardly attached mounting pieces 12, 1 which can be fixed to the lower surface of the frame 1 by bolts 11 at the upper and left edges of the left and right.
2 is formed, and mounting pieces 13, 13 facing the front-rear direction are formed on the front and rear upper edges so that a pressing plate 25 described later can be fixed.

A motor roller 15 having a built-in motor 14 is housed in the cross member 8b. A cushioning member 17 formed of rubber, elastomer, soft synthetic resin or the like in a cylindrical shape is fitted to the outer peripheral surface of the cylindrical motor housing 16 of the motor roller 15.

The lower portions of the left and right ends of the motor roller 15 are prevented from moving in the left-right direction by contacting the L-shaped holding projections 18, 18 fixed to the inner bottom surface of the cross member 8b. ing.

The rotary shaft 14a of the motor 14 protruding rightward (leftward in FIG. 2) of the motor housing 16 is
A pulley 19 having two annular grooves 19a is fixed, and the other end of the belt 20 wound around each annular groove 19a is either one of the two annular grooves 2b of the roller 2 immediately before and after the pulley 19. It is hung around. The belt 21 is alternately wound around the two annular grooves of the other adjacent rollers 2, so that when the two rollers 2 immediately above the pulley 21 rotate together with the pulley 19, all the rollers 2 move in the same direction. It will rotate in synchronization.

The front and rear side plates 8 of the cross member 8b
A large number of heat dissipation holes 22 are formed in the housings of the motor rollers 15 in C and 8C and the bottom plate 8d so that the heat generated by the motor 14 is dissipated to the outside.

A notch groove 23 for preventing the belt 20 from coming into contact is formed in an upper portion of the both side plates 8c facing the pulley 19. Further, on the left side of the both side plates 8c, a support groove 24 for attaching a wiring duct (not shown) for wiring the power cable 14b of the motor 14 and the like.
Are formed.

The motor roller 15 housed in the cross member 8b is firmly fixed by a holding plate 25 which also serves as a cover. That is, as shown in FIG. 4, the presser plate 25 has a central portion bent into a mountain shape, and front and rear end portions thereof are horizontal fixing pieces 25a which can be fixed to the front and rear mounting pieces 13 of the cross member 8b. have. Mounting holes 26 are formed at both left and right ends of the fixing piece 25a, and bolts 27 inserted into the fixing holes 25a are screwed into female screw holes 28 formed in the mounting piece 13, whereby the motor roller 15 is pressed by the pressing plate 25. It is clamped and fixed by.

At this time, when the cushioning material 17 is tightened so as to be compressed, the motor roller 15 is firmly fixed by the frictional force of the cushioning material 17.

A downward holding projection piece 29 is formed at the center of the end surface of the pressing plate 25 on the pulley 19 side, and this holding projection piece 29 abuts on the upper part of the right end surface of the motor roller 15, and this holds to the right. It is prevented from moving to the left (in FIG. 4, left). Further, in the contact area of the holding plate 25 with the motor roller 15, a large number of heat dissipation holes 22 similar to those described above are formed.

As described above, the outer peripheral surface of the motor housing 16 of the motor roller 15 is covered with the cushioning material 17, and is fixed by the cross member 8b and the holding plate 25 via this cushioning material 17. Motor roller 15
Vibration of the cross member 8b is absorbed by the cushioning material 17.
And transmitted to the frame 1 are extremely small. Therefore, when starting or stopping the motor roller 15, vibration noise during operation can be reduced.

Further, since the motor roller 15 can be housed in the cross member 8b and easily fixed by the pressing plate 25, it is not necessary to attach a bracket or the like to the motor roller 15, and the mounting work is extremely simple.

Further, since the motor roller 15 can be attached to the lower surface of the frame 1 in a state where it is previously fixed in the cross member 8b by the holding plate 25, the attachment / detachment work and maintenance are extremely easy.

Since each roller 2 can be removed above the frame 1, replacement work of the belt 20 and maintenance of the motor roller 15 can be easily performed from above.

Since a large number of heat dissipation holes 22 are formed in the cross member 8b and the holding plate 25, the heat dissipation of the motor housing 16 is improved and the heat load on the motor 14 is reduced.

The present invention is not limited to the above embodiment and can take various forms.

In the above embodiment, the motor housing 16
Although the whole is covered with the cushioning material 17, for example, as shown in FIG. 5, the cushioning material 17 may be fitted only to the outer peripheral surfaces of both end portions of the motor housing 16.

Further, as shown in FIG. 6, a large number of heat dissipation holes 22 may be formed in the cushioning material 17.

5 and 6, the heat radiation from the motor housing 16 is further improved.

In the above embodiment, the motor roller 15 with the built-in motor 14 is used, but it goes without saying that a normal motor can be used.

[0040]

According to the present invention, the following effects can be obtained.

(A) According to the invention described in claim 1, since the vibration of the roller driving portion including the motor is absorbed by the cushioning material, the vibration noise of the motor, the frame and the like is reduced, and the roller conveyor having a low noise is reduced. A device may be provided. Further, the motor can be easily fixed without attaching any bracket or the like.

(B) According to the second aspect of the invention, the work of fixing the motor is easy, and the motor can be easily maintained by removing the holding plate.

(C) According to the invention described in claim 3, the positioning of the motor is simple, and the motor is reliably prevented from moving in the axial direction of the roller.

(D) According to the invention described in claim 4, since the heat dissipation of the motor is improved, the heat load is reduced even when the motor is covered with the cushioning material.

(E) According to the invention described in claim 5, since the vibration absorbing effect is large, and the shock absorbing material is compressed by the fixing means to increase the frictional force, the motor is more firmly fixed. To be done.

(F) According to the invention described in claim 6, since the heat radiation of the motor is improved, the heat load on the motor is further reduced.

[Brief description of drawings]

FIG. 1 is a side view of a roller conveyor device of the present invention.

FIG. 2 is an enlarged vertical sectional front view of line II-II in FIG.

3 is a vertical cross-sectional side view taken along the line III-III in FIG.

FIG. 4 is an exploded perspective view of a motor roller and a fixing unit.

FIG. 5 is a front view of a motor roller to which a cushioning material of another embodiment is attached.

FIG. 6 is likewise a front view of a motor roller to which a cushioning material of another embodiment is attached.

[Explanation of symbols]

1 frame 2 rollers 2a spindle 2b annular groove 3 pedestals 4 casters 5 Mating groove 6 Roller support member 7 retaining groove 8,8a, 8b Cross member 8c side plate 8d bottom plate 9 Start button 10 Stop button 11 Volts 12,13 Mounting piece 14 motor 14a rotating shaft 14b power cable 15 Motor roller 16 motor housing 17 cushioning material 18 Holding piece 19 pulley 19a annular groove 20,21 belt 22 Heat dissipation hole 23 Notch groove 24 Support groove 25 Presser plate 25a fixed piece 26 mounting holes 27 volts 28 Female screw hole 29 Holding piece A roller conveyor device

Claims (6)

[Claims] 1. A large number of rollers are rotatably supported between a pair of frames facing each other in parallel with each other, and at least a part of the rollers is driven in association with a motor. In the roller conveyor device, at least a part of an outer peripheral surface of the motor is covered with a cushioning material, and the motor is fixed between the frames directly below the rollers by a fixing means via the cushioning material. apparatus. 2. The fixing means comprises a box-shaped cross member having an open top surface for connecting both frames, and a holding plate for covering the top surface. The top surface of the motor housed in the cross member is provided with a cushioning material. 2. The roller conveyor device according to claim 1, wherein the roller conveyor device is held in a stationary state by a holding plate fixed to the cross member. 3. The roller conveyor device according to claim 2, wherein the inner surface of at least one of the cross member and the presser plate is provided with a projecting piece that abuts both side ends of the motor. 4. The roller conveyor device according to claim 2, wherein a plurality of heat radiation holes are provided in at least a contact region of the cross member and the pressing plate with the motor. 5. The cushioning material is made of rubber.
The roller conveyor device according to any one of 1. 6. The roller conveyor device according to claim 1, wherein a plurality of heat dissipation holes are formed in the cushioning material.