JP2000007116A - Roller conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller conveyor in which a drive roller is installed in any arbitrary position without risk of damaging. SOLUTION: The upper surface 40a of a drive roller 40 supported between a left and a right side frame 10 is positioned below a transporting surface 3 formed from transport rollers 41. When an article to be transported W is put onto a transport path 2, or when a sideways moving force is applied to the article W, it is received by the transport rollers 41 and does not collides or contact with the drive roller 40, so that the drive roller 40 does not receive directly any impact or thrust force, and is prevented high cost drive roller from damaging. The drive roller 40 can be located in any position which does not give problem to the line formation or inter-roller torque transmission.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driven roller conveyor which is used, for example, on a ceiling or a floor or incorporated in a shelf facility.

[0002]

2. Description of the Related Art Conventionally, as a roller conveyor of this kind, there has been provided an arrangement as disclosed in, for example, US Pat. No. 5,582,286. In this conventional configuration, a driving roller and a conveying roller are provided between a pair of left and right side rail housings to form a conveyor unit, and the conveyor unit has at least one operation area. The adjacent roller groups are linked by a round belt, so that the rotational force of the driving rollers is transmitted to the conveying roller group.

[0003]

When a roller conveyor is used and a transfer line is formed on which a load (an object to be transferred) is loaded, the roller is damaged by the impact force at the time of loading. If a line is formed at the branch portion to slide the load laterally (in the direction of the roller axis), a thrust force may be applied to the roller and the roller may be damaged.

According to the above-described conventional configuration, the drive roller and the transport roller group form a transport surface with the upper surface of the drive roller and the transport roller group at the same level. In this case, the drive roller is subjected to various impact and thrust forces, which results in damage to the expensive drive roller. In order to cope with this, it is sufficient to dispose the driving roller so as to avoid the loading portion and the branch portion. In addition, when loading is performed using the entire length of one rotational force transmission region, it is not possible to dispose the driving roller around the driving roller.

It is an object of the present invention to provide a roller conveyor in which a driving roller can be arranged at an arbitrary position without causing damage.

[0006]

In order to achieve the above object, a roller conveyor according to the present invention comprises a conveyor frame having a pair of left and right side frames, and a roller conveyor between the left and right side frames. A roller conveyor comprising a plurality of rollers supported in the front-rear direction and a driving device for driving at least a part of the rollers to form a conveyance path in the front-rear direction. The present invention is characterized in that it is located below a conveying surface formed by a group of rollers.

Therefore, according to the first aspect of the present invention, when an object to be conveyed is input to the conveyance path or when a lateral moving force is applied to the object to be conveyed, the object to be conveyed is conveyed by the conveying roller group. The drive roller does not receive any collision or contact with the drive roller, so that the drive roller does not receive any impact force or thrust force, and the drive roller does not cause any difficulty in forming the line or transmitting the rotational force between the rollers. Position.

According to a second aspect of the present invention, in the roller conveyor according to the first aspect, the roller comprises a roller shaft and a roller cylinder rotatably fitted to the roller shaft. The driving device is characterized by comprising a rotational force transmitting means provided between adjacent rollers and a driving source for rotational driving provided in a roller cylinder of the driving roller.

Therefore, according to the second aspect of the present invention, the driving rollers are forcibly rotated by the driving source, so that the adjacent conveying rollers are sequentially rotated in conjunction with each other via the rotational force transmitting means, whereby the conveying path in the front-rear direction is formed. Can be formed.

According to a third aspect of the present invention, there is provided a roller conveyor according to the first or second aspect, wherein a side frame is provided with a group of through holes for a roller shaft.
The transport roller has its roller shaft supported by a shaft support, and the shaft support is fitted into the insertion hole and attached to the side frame, and a bracket is provided between a pair of transport rollers adjacent to the drive roller. The bracket is provided with a support hole for the roller shaft of the drive roller formed in the bracket.

Therefore, according to the third aspect of the present invention, after the bracket is mounted on the roller shaft of the pair of transport rollers supported by the side frame via the shaft support, the roller of the drive roller is inserted into the support hole of the bracket. By inserting the shaft, the drive roller can be supported between the left and right side frames via the bracket with its upper surface positioned below the transport surface.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The roller conveyor 1 drives a conveyor frame 9 having a pair of left and right side frames 10, a plurality of rollers 40 and 41 supported between the left and right side frames 10 in the front-rear direction, and at least a part of the rollers 40. And a driving device 47 that forms the transport path 2 in the front-rear direction. The conveyor frame 9 includes a pair of left and right side frames 10 and a lower frame 30 for connecting the lower inner surfaces of the side frames 10.

Each side frame 10 has a horizontal top plate 1.
1, a side plate portion 12 extending downward from an inner end portion of the top plate portion 11, and a bottom plate portion 13 extending outward from a lower end portion of the side plate portion 12 and parallel to the top plate portion 11. Are formed in a substantially C-shaped cross section (inverted C-shape). The side frame 10 has a duct portion 14 surrounded by a top plate portion 11, a side plate portion 12, and a bottom plate portion 13.

[0014] In the state of being located in the duct portion 14,
On the inner surface side of the side plate portion 12, an open first dovetail portion 1
5 and the second dovetail groove portion 16 are formed so as to be distributed vertically, and between the first dovetail groove portion 15 and the second dovetail groove portion 16, an outwardly projecting locking plate portion 17 is formed. . Further, on the outer surface side of the side plate portion 12, a first slit groove 18 is provided at an upper edge portion of the first dovetail portion 15, a second slit groove 19 is provided below the second dovetail portion 16, and a third slit groove 20 is provided at a lower end portion. Are formed in an open shape on the outside.

An open portion 21 is formed between the outer ends of the top plate portion 11 and the bottom plate portion 13, and the open portion 21 opens the duct portion 14 outward. At the outer ends of the top plate portion 11 and the bottom plate portion 13 forming the opening portion 21, groove-shaped locking portions 22, 23 are formed to face each other in the vertical direction. Further, a third dovetail groove portion 24 which is opened inward is formed in a corner portion formed by the side plate portion 12 and the bottom plate portion 13, and a fourth dovetail groove portion 25 which is opened to the lower side is formed in the bottom plate portion 13. ing.

Near the lower end of the side plate portion 12, there is formed a laterally L-shaped locking groove 26 which is opened inward, and a fourth slit is formed between the locking groove 26 and the third dovetail portion 24. A groove 27 is formed open inside. Bottom plate 1
A third slit groove 28 is formed on the outer end of the third member 3 so as to be open outward.

The side frame 10 having the above structure is
In a state where the cross sections at any points in the length direction have the same shape, they are integrally formed by extrusion molding of aluminum or the like. Then, in the side plate portion 12 of the integrally formed side frame 10, insertion holes 29 of the roller shaft are separately formed at predetermined pitches in the length direction, and the side frame 10 is cut into a predetermined length. You.

Here, the group of insertion holes 29 is a round hole located between the second dovetail groove portion 16 and the locking plate portion 17, and the hole diameter is set larger than the roller shaft diameter. Further, the group of insertion holes 29 has the same shape and diameter and is formed at a similar height position (level).

The side frame 10 and the lower frame 3
The connection with the locking frame 26 can be performed by locking locking members 31 integrally provided at both ends of the lower frame 30 with the locking grooves 26 from above.

In one side frame 10, a controller 35 is located in the duct portion 14, and the controller 35 is a fixing tool such as a tap screw utilizing the second slit groove 19 and the third slit groove 20. Is attached to the outer surface side of the side plate portion 12. At this time, the mounting operation can be easily performed from the outside by using the opening 21.

The opening 21 is closed by a flexible cover 37 made of, for example, a synthetic resin. At that time, the closed position is maintained by the elastic restoring force of the cover 37 in a state where the upper edge and the lower edge are fitted into the locking portions 22 and 23. Then, the cover 37 is disengaged from the side frames 10 by disengaging the upper edge and the lower edge from the locking portions 22 and 23 by bending the cover 37 against elasticity as shown by the imaginary line in FIG. obtain.

In order to prevent the cover 37 in the closed position from bending inward, a support member 38 is disposed in the duct portion 14, and the support member 38
7 is retained (set) in the side frame 10 in a predetermined posture. Here, the support member 38 also functions as a wire receiver.

The one side frame 10 has a sectional shape in which the second dovetail groove 16 does not exist, and the one side frame 10 has the same shape as the other side frame 10. 16 may have a cross-sectional shape,
Also, both side frames 10 may have a cross-sectional shape in which the second dovetail portion 16 does not exist.

The rollers are composed of a driving roller 40 and a conveying roller 41. The rollers 40, 41 are a roller shaft 42 and a roller cylinder 43 rotatably fitted to the roller shaft 42 via a bearing or the like. It consists of.

An annular concave portion 44 is formed at two positions on the end side of each roller cylinder 43, and adjacent rollers 40, 41 are formed.
Belt between the annular concave portions 44 (an example of a torque transmitting means)
The application of 45 allows transmission of rotational force between the adjacent rollers 40 and 41. Further, the drive roller (at least a part of the specific roller) 40 is provided with a motor (an example of a drive source) 46 for rotational drive in the roller cylinder 43. An example of the driving device 47 that forms the transport path 2 in the front-rear direction by driving at least a part of the rollers 40 by the round belt 45 and the motor 46 is configured.

The rollers 40, 41 are supported between the left and right side frames 10. In this case, the arrangement is performed in a state where the upper surface 40a of the drive roller 40 is positioned below the transport surface 3 formed by the remaining transport rollers 41 by a predetermined height H.

That is, both ends of the roller shaft 42 of each of the rollers 40 and 41 are formed at the square shaft end 42a, and the transport roller 41 is formed at the square shaft end 42a of the roller shaft 42.
Are supported by the shaft support 50. Here, the shaft support 50 is
The small diameter portion 50a includes a small diameter portion 50a and a large diameter portion 50b.
Are formed to have the same diameter as the insertion hole 29, and a square hole 51 is formed at the center.

Therefore, the shaft support 50 has its small diameter portion 5
0a is inserted into the insertion hole 29 from the inside and the large diameter portion 50b is brought into contact with the inner surface of the side plate portion 12 so that the large diameter portion 50b can be attached to the side frame 10. By being inserted into the hole 51 from the inside, the transport roller 41 is supported between the left and right side frames 10 via the shaft support 50.

A bracket 5 that can be mounted between the roller shafts 42 of a pair of transport rollers 41 adjacent to the drive roller 40
3 are provided. That is, the bracket 53 is formed with a pair of upper square holes 54 at the front and rear, and a central portion between the upper square holes 54 is located at a predetermined height H with respect to the formation position of the upper square holes 54. A lower square hole (support hole) 55 is formed at a lower position.

Accordingly, the bracket 53 has an upper angle with respect to the square shaft end 42a of the roller shaft 42 of the pair of transport rollers 41, which is inserted into the shaft support 50 and protrudes outside the side plate portion 12. It can be mounted by externally fitting through the hole 54. The drive roller 40 is attached to the side frame 10 via the bracket 53 by inserting the square shaft end 42a into the insertion hole 29 from the inside and then from the lower square hole 55 from the inside. obtain.

At this time, since the hole diameter of the insertion hole 29 is set to be larger than the roller shaft diameter as described above, the insertion of the square shaft end 42a of the drive roller 40 into the lower square hole 55 does not hinder at all. Driving, the drive roller 40
Is supported between the left and right side frames 10 via a bracket 53 or the like with its upper surface 40a positioned below the transport surface 3.

The power supply and control wires 58 for the motor 46 are located in the duct 14 and
8 and through a roller shaft 42 to a motor 46. Further, a part or all of the wiring 58 passes through the position of the support member 38, and the required one is connected to the controller 35.

Between the side frames 10 (side frame 1)
A photoelectric sensor (an example of a detecting device) 60 that detects the transported object W from the gap S between the rollers 40 and 41 is disposed via a bracket 61 (outside the position 0).

That is, the bracket 61 has a vertical plate portion 61a.
The bracket 61 is obtained by bending in a state where the bracket 61 has a horizontal plate portion 61b and the like, and a tap screw 62 passed through the vertical plate portion 61a from the inside is screwed into the fourth slit groove 27. It is fixed to the side frame 10 at the position adjusted by the movement. The sensor 60 is disposed below the horizontal plate portion 61b, so that the sensor 60 is located between the side frames 10 and below the conveying surface 3 by the group of rollers 41.

At this time, the detection direction 6
0A is the upward direction inclined with respect to the gap S between the rollers 40 and 41, and the detection position 60B is slightly higher than the conveyance surface 3. Note that the bracket 61 also functions as a cover that protects the sensor 60 from falling objects such as dust by positioning the horizontal plate portion 61b above the sensor 60.

The roller conveyor 1 having the above-described configuration is disposed so as to be supported on the ceiling side via a suspension device or on the floor side via a leg frame. That is, in the ceiling-side support type, suspension rods respectively positioned outside the side frames 10 are vertically provided, and the support frame is connected between lower portions of the suspension rods. Then, the roller conveyor 1 is placed on the support frame and connected,
At this time, the connection is performed by bolts and nuts utilizing the fourth dovetail groove 25. In the floor-side support type, the leg frames 80 are connected to the lower surface side of each side frame 10, and at this time, the connection is performed by bolts and nuts using the fourth dovetail portion 25.

Driving roller conveyor 1 having the above configuration
For example, a plurality of the feed routes 2 are arranged in a straight line and connected to each other by a connecting tool using the adjacent dovetail portions 15, 16, and 25.

The operation of the first embodiment will be described below. Rollers 40 between the side frames 10,
In disposing the group 41, the shaft support 50 is first fitted into the insertion hole 29 from the inside using the small diameter portion 50a, so that the shaft support 50 is disposed on the side frame 10. Then
With one side frame 10 fixed (fixed),
A square shaft end 42 a of one side of the roller shaft 42 of the transport roller 41 is inserted into a square hole 51 of the shaft support 50 on the fixing side. Then, the other side shaft end 42 a of the roller shaft 42 is inserted into the square hole 51 of the shaft support 50 on the other side while moving and adjusting the side frame 10 on the other side.

Thereafter, by fixing (fixing) the other side frame 10 using the lower frame 30 or the like, the conveying rollers 41 are moved between the left and right side frames 10 via the shaft support 50. Can be supported. At this time, the shaft support 50 is inserted into the insertion hole 29 where the drive roller 40 is disposed.
And the roller shaft 4 in the drive roller 40
The two end portions 42a of the two square shafts are loosely inserted into the insertion holes 29 in advance.

When arranging the rollers 40 and 41 between the side frames 10 in this manner, a round belt 45 having a length corresponding to a target roller pitch is formed between adjacent rollers 40 and 41. Multiplied by

Next, the bracket 53 is mounted over the drive roller 40 and the pair of transport rollers 41 before and after the drive roller 40. That is, the pair of transport rollers 41 which are inserted through the shaft support 50 and protrude outside the side plate portion 12 are provided.
The upper square hole 54 of the bracket 53 is externally fitted to the square shaft end 42a of the roller shaft 42, and the drive roller 40 is inserted through the insertion hole 29 and protrudes outside the side plate portion 12. The lower square hole 55 of the bracket 53 is externally fitted to the square shaft end 42a of the roller shaft 42 in FIG.

Thus, the drive roller 40 can be supported between the left and right side frames 10 via the bracket 53 or the like, with the upper surface 40a of the drive roller 40 being positioned below the transport surface 3. At this time, the group of insertion holes 29 can be easily formed at the same shape and diameter and at the same height position (level), but the hole diameter of the insertion hole 29 is set to be larger than the roller shaft diameter. Accordingly, the insertion of the square shaft end 42a of the drive roller 40 into the lower square hole 55 and the support via the bracket 53 can be performed stably without any problem.

Next, the sensor 60 is provided at a target position. That is, the bracket 61 to which the sensor 60 is attached can be fixed to the side frame 10 by screwing the tap screw 62 passed through the vertical plate portion 61a from the inside into the fourth slit groove 27. It can be performed at the target position. Thereby, the sensor 60 can be positioned between the side frames 10 and below the conveying surface 3 by the conveying rollers 41, and the detection direction 60A can be set in the upward direction inclined with respect to the gap S between the rollers. A position slightly higher than the surface 3 may be the detection position 60B.

Thereafter, or at any time before this, various constructions and operations are performed on the inside of the duct portion 14.
That is, the controller 35 is attached and various wirings 58 are mounted by using the opening 21 that is opened by removing the cover 37.
Can be constructed. The wiring 58 to the sensor 60
The process is performed using a through hole (not shown) formed in the side plate portion 12 or the like.

After performing various constructions and operations, the opening portion 21 engages the upper edge and the lower edge while bending the cover 37 against elasticity, as shown by a phantom line in FIG. 3, for example. The cover 37 can be closed by fitting into the stop portions 22 and 23. The closed position can be maintained by the elastic restoring force of the cover 37.

The roller conveyor 1 constructed as described above
Drives the rotation drive motor 46 provided in the roller cylinder 43 to forcibly rotate the drive roller 40, thereby sequentially and interlockingly rotating the adjacent conveyance rollers 41 via the round belt 45, Thus, the transport path 2 in the front-rear direction can be formed.

As shown in FIG. 2, for example, as shown in FIG. 2, a plurality of the roller conveyors 1 are arranged in a straight line along the transport path 2 and connected to each other. Can be performed. When the position of the sensor 60 is viewed, for example, when one roller conveyor 1 is viewed, the sensor 60 is set at two positions, a starting end portion and a central portion in the transport direction.
Each has a sensor 60 at the beginning and a drive 47
Two transport areas A having the (drive roller 40) are formed.

In the conveyor equipment configured as described above, when a certain sensor 60 detects the article W to be transported, the driving device 47 of the transport area A in which the sensor 60 is disposed is driven to drive the article to be transported. W is transported, and the driving device 47 of the transport area A on the upstream side with respect to the transport area A is stopped, so that the transported object W can be transported forward. Such conveyance is controlled by the controller 35 or the like.

In the above-described detection of the transferred object W by the sensor 60, the detection direction 60A by the sensor 60 is set to the upward direction inclined with respect to the gap S between the rollers, and a little higher than the transfer surface 3 is detected. Since the position is set to the position 60B, the detection distance can be shortened, and the erroneous detection can be reduced. When dust or the like on the transferred object W falls from the gap S, the dropped object is
1 can be received by the horizontal plate portion 61b or the like.
Can be protected.

In this transport mode, when the transported object W is loaded in the transport area A, the driving roller 40
The transported object W is received by the group of transport rollers 41 and does not collide (contact) with the drive roller 40 because the upper surface 40a is located below the transport surface 3. It is possible to prevent the expensive driving roller 40 from being damaged without receiving any force. In addition, the drive roller 40 can be disposed at any position where the formation of the line and the transmission of the rotational force between the rollers do not occur.

When the transferred object W is, for example, a net-like object and the detection by the sensor 60 cannot be suitably performed, the detection direction 65A is set with respect to the transfer surface 3 as shown in FIGS. It is sufficient to provide a sensor 65 that is located above the sensor 65.
In this case, the sensor 60 may be omitted, or both sensors 60 and 65 may be provided.

Next, a second embodiment of the present invention will be described with reference to FIG.
It will be described based on. That is, the branch portion is shown. At this time, the upper part of the side frame 70 on the branch direction side is removed from slightly above the part where the insertion hole 29 is formed, so that the upper end is located below the transport surface 3. Have been. A branch conveyor 71 is provided outside the side frame 70. Further, between the side frames 10 and 70, there is provided a horizontal pushing means 72 for sliding the article W to be transported on the roller conveyor 1 in the horizontal direction to branch on the branch conveyor 71. The lateral pushing means 72 includes a pair of left and right wheels 73, a chain 74 provided between the wheels 73, and a lateral pushing attached to the chain 74 and protruding above the transport surface 3 through the gap S. It is composed of a body 75 and the like.

According to the second embodiment configured as described above, the transported object W transported on the transport path 2 is stopped facing the branch conveyor 71, and the lateral pushing means 72 is driven. By moving the laterally pushed body 75 to the branch conveyor 71 side, the laterally pushed body 75 abuts on the transported object W and is laterally moved, whereby the transported object W can be branched on the branch conveyor 71. . At this time, since the transported object W is slid in the lateral direction on the transport rollers 41 group, no thrust force is applied to the drive roller 40 in the roller axis direction.
This can prevent the expensive drive roller 40 from being damaged.

Although the branch portion is shown in the second embodiment, a similar configuration is adopted for the merging portion. Next, a third embodiment of the present invention will be described with reference to FIG.

That is, a curve path portion is shown,
A drive taper roller 80 is provided between the left and right side frames 10.
And the transport taper roller 81 are disposed in the same manner as in the first embodiment. In this case, the left and right side frames 1 are formed in order to form the upper surface 80a and the transport surface 3 horizontally.
The insertion hole 29 at 0 is formed at a different position in the vertical direction.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
It will be described based on. That is, a modified example of the above-described third embodiment is shown.
1 is shown. In the case of the fourth embodiment, the insertion hole 29 is formed lower.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
It will be described based on. That is, a side frame 85 that does not require a guide function is shown. In this case, a cover 86 made of aluminum is provided using the locking portion 23 and the locking body 31.

In each of the above-described embodiments, the photoelectric sensors 60 and 65 are shown as the detection devices, but they may be of a non-contact type or other types. In each of the above embodiments, the specific roller 4
Although the internal drive type in which the motor 46 is provided in 0, 80 is shown, the drive rollers 40, 80 may be formed by an external drive type using a chain, a gear, or the like.

In each of the above embodiments, as shown in FIG. 2, some brackets 53 are disposed between the side frames 10 of the front and rear roller conveyors 1.
This may be of the type in which all the brackets 53 are arranged in the same side frame 10.

In each of the above-described embodiments, as shown in FIG. 2, the drive roller 40 is disposed at the end of the transport area A, and the round belt 45 is provided between the drive roller 40 and the superior transport roller 41. Although the type in which the round belt 45 is not hung between the drive roller 40 and the lower transport roller 41 is shown, this is due to the arrangement of the drive roller 40 in the transport area A and the drive roller 40. A round belt 4 is provided between the upper and lower transport rollers 41 respectively.
5 may be used.

[0061]

According to the first aspect of the present invention, when an object to be conveyed is inserted into the conveyance path or when a lateral moving force is applied to the object to be conveyed, the object to be conveyed moves. Since the rollers are received by the transport roller group and do not collide with or contact the drive rollers, the drive rollers do not receive various impact or thrust forces, thereby preventing the expensive drive rollers from being damaged. Can be disposed at any position where the formation of lines and the transmission of rotational force between rollers do not take place excessively.

According to the second aspect of the present invention,
By forcibly rotating the driving roller by the driving source, the adjacent conveying roller groups can be sequentially rotated in conjunction with each other via the rotational force transmitting means, and a conveying path in the front-rear direction can be formed. By providing the drive source inside the body, the whole can be configured compactly, but it can be used in a form in which damage is unlikely to occur.

According to the third aspect of the present invention, the bracket is mounted on the roller shaft of the pair of transport rollers supported by the side frame via the shaft support, and then the bracket is mounted on the support hole of the bracket. By inserting the roller shaft of the roller, the drive roller can be supported between the left and right side frames via the bracket with the upper surface thereof positioned below the transport surface. At that time, the insertion hole group can be easily formed in the same shape, diameter and at the same height position, and by setting the hole diameter of the insertion hole larger than the roller shaft diameter, the support of the roller shaft in the drive roller The insertion into the hole and the support via the bracket can be performed without any trouble and stably.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention and is a longitudinal sectional side view of a main part of a roller conveyor.

FIG. 2 is a conveyor equipment in which the roller conveyors are arranged in a straight line, wherein (A) is a plan view and (B) is a longitudinal side view.

FIG. 3 is a vertical sectional front view of the roller conveyor.

FIG. 4 is a vertical sectional front view of a main part of the roller conveyor.

FIG. 5 is a perspective view of a main part of a side frame in the roller conveyor.

FIG. 6 shows a second embodiment of the present invention, and is a longitudinal sectional front view of a roller conveyor.

FIG. 7 is a longitudinal sectional front view of a roller conveyor, showing a third embodiment of the present invention.

FIG. 8 shows the fourth embodiment of the present invention, and is a longitudinal sectional front view of a main part of a roller conveyor.

FIG. 9 shows a fifth embodiment of the present invention, and is a longitudinal sectional front view of a main part of a roller conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller conveyor 2 Transport path 3 Transport surface 9 Conveyor frame 10 Side frame 21 Opening part 29 Roller shaft insertion hole 30 Lower frame 35 Controller 37 Cover 40 Drive roller 40a Upper surface 41 Transport roller 42 Roller shaft 42a Square shaft end 43 Roller cylinder 44 Annular recess 45 Round belt (rotational force transmitting means) 46 Motor (drive source) 47 Drive device 50 Shaft support 51 Square hole 53 Bracket 54 Upper square hole 55 Lower square hole (support hole) 60 Sensor (detection device) ) 70 Side frame 71 Branch conveyor 72 Lateral pushing means 80 Drive taper roller 80a Upper surface 81 Transport taper roller 85 Side frame A Transport area H Predetermined height

Claims (3)

[Claims] 1. A conveyor frame having a pair of left and right side frames, a plurality of rollers in the front and rear direction supported between the left and right side frames, and at least a part of the rollers being driven to form a conveyance path in the front and rear direction. A roller conveyor comprising a driving device to be formed, wherein the upper surface of the driving roller is located below a conveying surface formed by the remaining conveying roller group. 2. The roller comprises a roller shaft and a roller cylinder rotatably fitted on the roller shaft. The driving device comprises: a rotating force transmitting means provided between adjacent rollers; 2. The roller conveyor according to claim 1, further comprising a driving source provided for rotation driving provided in the roller cylinder. 3. A side frame is provided with a group of roller shaft insertion holes, and the transport roller has its roller shaft supported by a shaft support, and the shaft support is fitted into the insertion hole. 3. A bracket is mounted between the roller shafts of a pair of conveying rollers adjacent to the drive roller, and a support hole for the roller shaft of the drive roller is formed in the bracket. The described roller conveyor.