JPH082623A - Driving roller conveyor and shelf facility equipped with driving roller conveyor - Google Patents

Abstract

PURPOSE:To provide a driving roller conveyor which can give sufficient carrying power to a carried article though the whole driving roller conveyor can be simply and inexpensively composed and simply controlled, and can quickly stop the driving roller simultaneously with switching from driving to nondriving. CONSTITUTION:The forced rotation of a driving roller 20 is transmitted to a transmitting roller 60 abutting elastically against the roller 20, and the roller 60 is thereby forcedly rotated in a reverse direction. The forced rotation of the transmitting roller 60 is transmitted to a loosely rotating roller 50 abutting elastically against the roller 60, and the roller 50 is thereby forcedly rotated in the same direction as the driving roller 20. The whole of the driving roller 20 and the loosely rotating roller 50 are turned into a forcedly driven state. When the forced rotation of the driving roller 20 is stopped, the rotation of the transmitting roller 60 can be quickly stopped by making frictional resistance reduce its inertia rotation, and moreover the rotation of the driving roller 20 by which the transmitting roller 60 is abuttedly energized through elastic force and of the loosely rotating roller 50 can be also quickly stopped by reducing the inertia rotation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is employed, for example, in drive roller conveyors that are installed in shelving equipment or installed on the floor, as well as to store loads either directly or via pallets and retrieve them as needed. The present invention relates to a shelf facility using a drive roller conveyor.

[0002]

2. Description of the Related Art Conventionally, as a drive roller conveyor, a structure disclosed in, for example, Japanese Patent Laid-Open No. 5-229613 has been provided. In this conventional structure, a large number of drive rollers are arranged on the conveyor frame. Each drive roller has a roller shaft supported by a conveyor frame, and a passive portion and a cylindrical member are fitted onto one end side of the roller shaft so as to freely rotate, and extend over the passive portion and the other end side of the roller shaft. The roller body is fitted so as to freely rotate. Further, the tubular member is provided with a flexible body which comes into contact with the inner surface of the roller body when contracted and can be pressed into contact with the inner surface of the roller body and the outer surface of the passive portion when expanded, and the fluid supply opening inside the flexible body is provided. The discharge path is formed from the roller shaft to the tubular member.

According to this conventional structure, fluid is supplied into the flexible body through the fluid supply / discharge path while the rotational force is applied to the passive portion, and the flexible body is expanded to form the inner surface of the roller body and the outer surface of the passive portion. When the roller body is pressed against the roller body, the rotational force of the passive portion is transmitted to the roller body through the flexible body, and the roller body is forcibly rotated. And when the pressure inside the flexible body is released,
The flexible body shrinks, and the pressure contact with the outer surface of the passive part and the inner surface of the roller body is released.At this time, the friction resistance of the seal device and the contact of the flexible body are greater than the friction resistance of the bearing device of the roller body. Since the resistance is large, the roller body becomes integral with the roller shaft and stops rotating.

Further, as a shelf facility using a drive roller conveyor, for example, the structure shown in Japanese Patent Publication No. 5-85444 is provided. In this conventional configuration, the carrier device is arranged on the shelf frame so that the carrier direction is horizontal, and the carrier device is composed of a pair of left and right roller conveyors having a large number of idle rollers. One of the roller conveyors is of a drive type and the other roller conveyor is of a non-drive type. The drive-type roller conveyor includes a large number of idle rollers supported by a main body frame, a drive device that is paired with the idle rollers and is capable of contacting and separating from the lower portion of the outer periphery of the idle rollers, and these drive devices. It is composed of a chain linked to.

According to this conventional shelf structure, by bringing the drive device into contact with the lower portion of the outer periphery of the idler roller, the moving force of the chain is converted into rotation, the idler roller is forcibly rotated, and the drive device is idled. By separating from the lower part of the outer periphery of the rolling roller, the idle roller is not driven and rotation is stopped.

[0006]

However, of the above-mentioned conventional types, in the former drive roller conveyor, all the rollers arranged in the conveyor frame are provided with drive means (passive part, flexible body, etc.). In addition, the drive roller conveyor used for the latter rack equipment is expensive because the idler rollers are all equipped with a drive device, and the transferred object is conveyed by inertia when switched to non-drive. It becomes easy.

To solve the above-mentioned problem of high cost, it is conceivable that drive rollers are arranged with a large pitch, and non-driving idler rollers are arranged between the drive rollers to form a drive roller conveyor. However, in this case, there are many problems such that a sufficient conveyance force is not applied to the conveyed object and the conveyed object is stopped on the way. For inertial conveyance, it is possible to add a brake structure to a part of the roller group, but in this case, the structure and control become complicated.

The object of the present invention is to make it possible to simply and inexpensively construct the whole and to simplify the control, but at the same time, it is possible to apply a sufficient conveying force to the object to be conveyed and to not drive it. To provide a drive roller conveyor that can quickly stop the drive roller at the same time as switching, and a shelf facility that uses the drive roller conveyor that can reliably transfer the object to be transferred at a constant speed while making the transfer path horizontal. is there.

[0009]

In order to achieve the above object, a drive roller conveyor according to the first aspect of the present invention comprises a frame, a plurality of drive rollers, an idler roller located between the drive rollers, and an adjacent drive roller. And a transmission roller which is capable of contacting the idler roller from below, and which is freely rotatable and abuts the drive roller and idler roller from below by the elastic biasing force of the elastic body. Configured to do so.

A second aspect of the present invention is the drive roller conveyor according to the first aspect of the present invention, wherein the drive roller comprises a roller shaft supported by a frame, and a passive portion and a tubular member fitted to one end of the roller shaft. A roller body that is freely fitted onto the roller shaft, a flexible body that is fitted onto the tubular member, and a fluid formed from the roller shaft to the tubular member so as to open inside the flexible body. The flexible body is configured to expand when a fluid is supplied through the fluid supply / exhaust passage, press-contact with the inner surface of the roller body, and transmit the rotation of the passive portion side to the roller body. There is.

In the shelf equipment using the drive roller conveyor according to the third aspect of the present invention, a plurality of partition sections are formed by the shelf frame, and the drive roller conveyor is arranged in each partition section with its transport path being horizontal. The drive roller conveyor is configured so that a frame mounted on a shelf frame has a plurality of drive rollers, an idler roller located between the drive rollers, and an adjacent drive roller and idler roller that can come into contact with the idler roller from below. A free transmission roller is provided, and an elastic body that abuts and biases the idler roller is provided.

Further, in the fourth invention, in the rack facility using the drive roller conveyor of the third invention, the drive roller conveyor and the idle roller conveyor are provided in parallel in each partition part with the transportation paths thereof being horizontal. The idle roller conveyor is composed of a frame attached to a shelf frame and a plurality of support rollers freely laid on the frame.

[0013]

According to the structure of the first invention described above, the forced rotation of the drive roller can be performed against the frictional resistance generated between the drive roller and the rotation support portion. Then, the forced rotation of the drive roller can be transmitted to the transmission roller elastically abutting on the drive roller, and the transmission roller can be forcedly rotated in the opposite direction. Further, the forced rotation of the transmission roller can be transmitted to the idler roller which is elastically in contact with the idler roller, and the idler roller is forcedly rotated in the direction opposite to the transmittal roller, that is, in the same direction as the drive roller. You can At this time, the compulsory rotation of the transmission roller is performed against the frictional resistance generated between the transmission roller and the rotation supporting portion, and the compulsory rotation of the transmission roller is similarly generated by the frictional resistance generated between the rotation supporting portion. Done against. As a result, all of the drive roller and the idler roller can be brought into a forced drive state, so that the object to be conveyed supported by these rollers can be conveyed with a sufficient conveying force.

When the forced rotation of the drive roller is stopped, the rotation of the transmission roller can be stopped quickly by reducing the inertial rotation due to frictional resistance, and the transmission roller is urged by the elastic force of the elastic body. The rotation of the driven roller and idler roller can be stopped quickly by reducing the inertial rotation. Thereby, the conveyance of the conveyed object can be stopped.

Further, according to the structure of the second aspect of the present invention, the fluid is supplied into the flexible body through the fluid supply / discharge path, and the flexible body is expanded by the pressure of the fluid and brought into pressure contact with the inner surface of the roller body. The rotational force can be transmitted to the roller main body via the flexible body to forcibly rotate the drive roller. Further, by releasing the pressure in the flexible body through the fluid supply / discharge path, the flexible body is contracted and the pressure contact with the inner surface of the roller body is released, so that the rotational force from the passive part side is cut off. , The forced rotation of the drive roller may be stopped.

According to the structure of the third aspect of the present invention, in each section, the object to be conveyed supported by the drive roller and the idler roller of the drive roller conveyor which is forcibly rotated is sufficiently provided on the horizontal conveyance path. It can be stably transported with various transport forces.

Further, according to the structure of the fourth aspect of the present invention, in each partition, the driven roller of the driving roller conveyor which is forcibly rotated and the idler roller and the supporting roller of the idler roller conveyor are supported. The conveyed product can be stably conveyed with a sufficient conveying force on the horizontal conveying path by the conveying force on the drive roller conveyor side.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. In FIGS. 5 and 6, reference numeral 1 denotes a shelf frame, a plurality of left and right front columns 2, a plurality of left and right rear columns 3, and a plurality of upper and lower front cross members 4 connecting the front columns 2 and 2, A plurality of upper and lower rear cross members for connecting the rear columns 3 and 3,
Front and rear members 6 that connect the front and rear of the front strut 2 and the rear strut 3
Etc. And the left and right stanchions 2, 2, 3, 3
Due to the space and the space between the upper and lower horizontal members 4, 4, 5, 5, a plurality of partition portions 7 are formed in the entire length in the front-back direction in the left-right direction and the up-down direction. The transport path 8 is provided in each partition 7.
The drive roller conveyor 10 and the idle roller conveyor 80 are arranged side by side in a horizontal shape.

As shown in FIGS. 1 and 2, the frame 11 of the drive roller conveyor 10 has a cross section U composed of a pair of left and right side plates 12 and a bottom plate 13 located between the lower ends of the side plates 12.
It is formed in a V shape and is fixed to the horizontal members 4, 5 and the like via bolts and nuts (not shown) that act on the bottom plate portion 13. Inside the corner formed by the one side plate 12 and the bottom plate 13,
The rail material 16 is arranged and fixed by a connecting tool 17, and the rail material 16 is composed of a pair of upper and lower guide rail portions 1.
8 and 19 are integrally formed. And one side plate portion 12
A plurality of bearing portions 14 are formed at a predetermined pitch in the frame length direction at the upper part of the frame, and a vertical bearing long hole 15 is formed at the upper part of one side plate portion 12 facing the bearing parts 14. There is.

The frame 11 includes a plurality of drive rollers 20.
And an idler roller 50 located between these drive rollers 20,
A transmission roller 60 is disposed so as to be able to come into contact with the adjacent drive roller 20 and idle roller 50 from below. That is, the idle roller 50 is arranged in front of and behind the drive roller 30, and the pair of front and rear transmission rollers 60 are arranged. These five rollers 2
A plurality of sets of 0, 50, and 60 are arranged in the frame 12, and at that time, the pitch between the drive roller 20 of each set and both idler rollers 50 and the play of an adjacent set. The rolling rollers 50 are arranged with substantially the same pitch.

Caps 22 and 23 made of hard rubber are attached to both ends of the roller shaft 21 of the drive roller 20, and a parallel portion 21a is formed. The roller shaft 21 is supported on the frame 11 side in a non-rotating manner by positioning the parallel portions 21a in the bearing portion 14 and the bearing elongated hole 15.

A passive portion 24 and a tubular member 25 are respectively fitted onto the roller shaft 21 so as to be freely rotatable with the passive portion 24 as an outer side. That is, the passive portion 24 includes the bearing device 26 and the bush 27.
A cylindrical portion 24A rotatably supported by the roller shaft 21 via
And a sprocket part 24 that is integrated with one end of this cylinder part 24A
It is composed of B and the like. The tubular member 25 is rotatably supported by the roller shaft 21 via a bearing device 28.
Further, the tubular member 25 is integrated with the passive portion 24 via the connector 29.

A cylindrical roller body 30 is fitted over the passive portion 24 and the other end of the roller shaft 21 in a freely rotatable manner. That is, the bearing device 31 is arranged on each of the cylindrical portion 24A of the passive portion 24 and the other end side of the roller shaft 21, and the roller main body 30 is fitted over the bearing devices 31.

A rubber tube 32, which is an example of a flexible body, is fitted onto the tubular member 25. That is, one end of the rubber tube 32 is fitted onto the other end of the tubular member 25 and fixed by the band 33. Then, after being folded back to the one end side with the inner surface thereof as the outer side, the remaining end is externally fitted to one end of the tubular member 25 and fixed by the band 34. This allows the rubber tube 32
Is a tubular member 25 in a horizontal direction with its folded back free end being the other end.
And a pressurizing chamber 35 is formed inside.

The rubber tube 32 is separated from the inner surface 30a of the roller body 30 at the time of contraction, expands when a fluid is supplied to the pressure chamber 35, and is brought into pressure contact with the inner surface 30a of the roller body 30 to form a tubular member 25. It is configured to transmit the side rotation to the roller body 30.

A fluid supply / discharge passage 36 that opens to the pressure chamber 35 of the rubber tube 32 is formed from the roller shaft 21 to the tubular member 25. That is, the fluid supply / discharge passage 36 is formed on the axial center of the roller shaft 21 from one end to the middle, and the shaft passage 36a opened in the middle in the radial direction is always in communication with the shaft passage 36a. An annular flow path 36b formed between the outer surface of the roller shaft 21 and the inner surface of the tubular member 25, and the annular flow path 36b is formed in the pressurizing chamber.
Cylindrical flow path 36c formed in the tubular member 25 so as to communicate with the inside of the pipe 35.
And the cap to communicate with one end of the shaft channel 36a.
It is formed from the pipe flow path 36d and the like formed in 22.

An annular flow path 36 which is a part of the fluid supply / discharge path 36
A sealing device 37 is interposed between the roller shaft 21 and the tubular member 25 so as to form b inside. The sealing device 37 has a penetrating portion 38 that connects the annular flow passage 36b and the tubular flow passage 36c.
Are formed. Further, the sealing device 37 is made of a flexible member, is fixed to the inner surface of the tubular member 25, and is configured to be slidable on the outer surface of the roller shaft 21.

A chain 40, which is an example of a driving body, is supported and guided by an upper guide rail portion 18 whose upper path is constantly meshed with the sprocket portion 24B from below and a lower guide rail portion 19 which is a lower path. As shown in FIG. 4, the chain 40 includes a drive sprocket 41 and a driven sprocket 42.
It is stretched via a guide sprocket 43 etc. between
The drive sprocket 41 is linked to the motor 44.

As shown in FIGS. 1 and 3, the idler roller 50 includes a roller shaft 51 and a cylindrical roller body 52 which is fitted onto the roller shaft 51 via a plurality of bearing devices so as to be freely rotatable. It is composed of. Parallel parts are provided on both ends of the roller shaft 51.
51a is formed, and the roller shaft 51 is supported on the frame 11 side in a non-rotating manner by locating the parallel portions 51a in the bearing portion 14 and the bearing elongated hole 15.

The transmission roller 60 is freely rotatable and is configured to come into contact with the drive roller 20 and the idler roller 50 from below by the elastic biasing force of the elastic body. That is, the transmission roller 60 is composed of a roller shaft 61, a roller body 62 that is fitted onto the roller shaft 61 so as to freely rotate, and a rubber ring 63 that is fixed to the outer periphery of the roller body 62. . A U which can be placed on the bottom plate 13 of the frame 11
A character-shaped support frame 64 is provided, one end of the roller shaft 61 is inserted into a through hole 65 formed in one side plate portion of the support frame 64, and the other end is in a vertical recess 66 formed in the other side plate portion. It has been dropped.

A compression spring 67, which is an example of an elastic body, is disposed between the bottom plate portion of the support frame 64 and the other end of the roller shaft 61. By urging the end upward, the rubber ring 63 is brought into contact with the roller body 30 of the drive roller 20 and the roller body 52 of the idler roller 50 from below.

Drive roller conveyor having the above-mentioned structure
4, for example, as shown in FIG. 4, six (plural) rollers, that is, two sets of rollers 20 and 50 as one group, are plural groups in the direction of the conveyance path 8, and in the embodiment, 8 groups A and B. , C, D, E, F, G, H are arranged, and the drive roller 20 is expanded by the rubber tube 32 for each of the groups A to H. That is, a supply / discharge hose 70 in which the pipe flow paths 36d are connected in series is provided for each group, and these supply / discharge hoses 70 are connected to a common supply hose 73 from the fluid supply device 72 via electromagnetic valves 71, respectively. Communication and disconnection are possible.

On the downstream side of each of the groups A to H, there is provided a photoelectric switch 74, which is an example of the presence detector.
When the photoelectric switch 74 of the upstream side group is detected and the photoelectric switch 74 of the downstream side group is not detected, the rubber tubes 32 of both groups are pressed against each other at the same time. Motion (supply hose
73 is connected to the supply / discharge hose 70).

When the photoelectric switches 74 of both groups are simultaneously detected or not simultaneously detected, the rubber tubes 32 of both groups are simultaneously opened (supply hose 73 and supply / discharge hose 73).
It is configured to block 70). Therefore, each solenoid valve 71 is incorporated in each control unit 75. Also, only the most downstream group A has its photoelectric switch.
The rubber tube 32 is configured to release when the 74 is detected.

As shown in FIG. 5, the idle roller conveyor 80 arranged in parallel with the drive roller conveyor 10 is a frame 81 attached to the cross members 4 and 5 of the shelf frame 1 and is freely rotatable on this frame 81. It is composed of a plurality of support rollers 82 and the like arranged in the. A load 85 is an example of an object to be transported, and is placed on the pallet 86 and handled. A stopper 87 fixed to the shelf frame 1 side is provided at the end of the transport path 8.

Next, the work of transporting the load 85 in the above-described first embodiment will be described. The solid line in FIG. 1 and the phantom line in FIG. 2 show the solenoid valve 71 for connecting the supply hose 73 to the supply / drain hose 70.
And the rubber tube 32 is expanded by the pressure of the air (fluid) supplied through the fluid supply / discharge path 36,
The state of being pressed against the inner surface 30a of 30 is shown. At this time, the chain 40 is constantly driven by the motor 44,
Therefore, the sprocket portion 24 engaged with the chain 40
The passive portion 24 is rotated around the roller shaft 21 via B.

The tubular member 25 integrated with the passive portion 24 is integrally rotated around the roller shaft 21, and the rubber tube 32 integral with the tubular member 25 is pressed against the inner surface 30a of the roller body 30. The roller body 30 is also integrally rotated. At this time, the roller body 30 is forcibly rotated against the frictional resistance of the bearing devices 26, 28 and the seal device 37.

The forced rotation of the roller main body 30 is caused by the two transmission rollers elastically abutting on the roller main body 30.
It is transmitted to the roller body 62 of 60, that is, the rubber ring 63, and the rubber ring 63 is forcibly rotated in the opposite direction. Further, the forced rotation of the rubber ring 63 of both the transmission rollers 60 is transmitted to the roller main body 52 of both the idle rollers 50 on which the rubber ring 63 is elastically abutted, and these roller main bodies 52 are transmitted to the both transmission rollers 60. The rubber ring 63 is forcedly rotated in the opposite direction, that is, in the same direction as the roller body 30 of the drive roller 20. At this time, the forced rotation of the roller main body 52 of the two idle rollers 50 is performed against the frictional resistance generated between the roller body 51 and the roller shaft 51, and the forced rotation of the roller main body 62 of the both transmission rollers 60 is similarly performed. This is performed against the frictional resistance generated between the shaft 61.

As a result, the drive roller 20 and the idler roller 50 of the drive roller conveyor 10 are all forcedly driven, so that the rollers 20, 50 and the idler roller conveyor 80 are driven.
The pallet 86 supported between the supporting rollers 82 of
The sheet is conveyed on the conveying path 8 while receiving the conveying force of the drive roller conveyor 10.

When the solenoid valve 71 is switched to shut off the supply / discharge hose 70 from the supply hose 73, the rubber tube 32
The internal pressure is released, and the rubber tube 32 contracts by its own elastic force as shown by the phantom line in FIG. 1 and the solid line in FIG. 2, and the pressure contact with the inner surface 30a of the roller body 30 is released.

At this time, in the roller body 62 of the transmission roller 60, since the frictional resistance due to the sliding contact with the roller shaft 61 is generated as described above, the roller body 62 rotates with less inertial rotation. Is quickly stopped, and the rubber ring 63 is urged against the elastic force of the compression spring 67. The roller main body 30 of the drive roller 20 and the roller main body 52 of the idler roller 50.
Also, the inertial rotation is reduced and the rotation is quickly stopped. As a result, the transportation of the pallet 86 is stopped.

When the pallet 86 has not reached, the transmission roller 60 is compressed by the compression spring 67 as shown in FIG.
The other end of the roller shaft 61 is inclined to rise in the recess 66 by the elastic force of. The contact force of the transmission roller 60 causes the idler roller 50 to tilt so that the other end of the roller shaft 51 rises in the bearing slot 15 and the drive roller 20.
Is similarly tilted. When the pallet 86 reaches in this state, the load on the pallet 86 side causes the drive roller 20
Also, the idler roller 50 is horizontal, so that a conveying force is generated even on the unevenness of the bottom surface of the pallet 86.

In each compartment 7, the pallet 86 (load 85) is basically transported as described above, but the photoelectric switch 74 actually detects and does not detect the pallet 86. Transport control is performed based on

That is, when the pallet 86 is unloaded on the upstream end group H by a forklift or the like while the transport path 8 is empty, the photoelectric switch 74 of the group H is detected but the photoelectric switch 74 of the group G is not detected. Therefore, the operation of the control unit 75 and the solenoid valve 71 causes the rubber tube 32 to expand due to the pressure contact, so that the group H,
The G drive roller 20 is forcibly rotated, and the pallet 86 is conveyed from the group H to the group G.

When the pallet 86 enters the group G, the photoelectric switch 74 of the group G is detected, but the group F is not detected. Therefore, the rubber tubes of the groups G and F are detected.
32 presses against each other, and pallet 86 moves from group G to group F
Transported to In this way, the pallet 86 sequentially conveyed to the downstream side comes into contact with the stopper 87, is stopped, and is stored in the group A. And this palette
When the photoelectric switch 74 detects 86, the rubber tube 32 of the group A is released.

The second pallet 86 is also conveyed in the same manner, abuts the pallet 86 of the group A and is stored in the group B. At this time, the group B is detected and moved, but since the group A is also detected and moved, the rubber tube 32 of the group B is also released.

It is assumed that the pallets 86 are stored in all the groups A to H and all the rubber tubes 32 are released by this work. When the pallet 86 of the group A is taken out in this state, the photoelectric switch 74 of the group A is
Is not detected, so rubber tubes of groups A and B
32 is pressed and moved, so that the pallet 86 of group B is conveyed to group A. Then, since the photoelectric switch 74 of the group B is not detected, the rubber tubes 32 of the groups B and C are pressed against each other, and the pallet 86 of the group C is conveyed to the group B. By repeating such an operation, the pallet 86 can be sequentially fed.

FIG. 7 shows a second embodiment of the present invention. That is, the frame 11 is provided with a movable support frame 91 that is vertically swingable with one end in the direction along the transport path 8 as a fulcrum 90, and between the pair of left and right bracket portions 92 erected from the movable support frame 91. A roller shaft 61 of the transmission roller 60 is attached to the. A compression spring, which is an example of an elastic body, is provided between the bottom plate portion 13 of the frame 11 and the lower surface of the other end of the movable support frame 91.
67 are provided.

According to the second embodiment, the elastic force of the compression spring 67 urges the movable support frame 91 upward about the fulcrum 90, so that the rubber ring 63 integral with the roller body 62 causes the drive roller 20 to move. The roller body 30 and the roller body 52 of the idler roller 50 are contacted from below.

FIG. 8 shows a third embodiment of the present invention. That is, two (plural) idle rollers 50 are arranged in front of and behind the drive roller 20, and two (plural) transmission rollers 60 are arranged in front of and behind the drive roller 20, respectively. A plurality of sets are arranged on the frame 11 with the nine rollers 20, 50, 60 as one set.

FIG. 9 shows a fourth embodiment of the present invention. That is, one idler roller 50 is disposed behind (or in front of) the drive roller 20, and further the drive roller 20 and the idler roller 50 are arranged.
A single transmission roller 60 is disposed between and. A plurality of sets are arranged on the frame 11 with the three rollers 20, 50, 60 as one set.

FIG. 10 shows a fifth embodiment of the present invention. That is, two (plural) idle rollers 50 are arranged behind (or in front of) the driving roller 20, and two (plural) transmission rollers 60 are arranged behind the driving roller 20. . A plurality of sets are arranged on the frame 11 with the five rollers 20, 50, 60 as one set.

FIG. 11 shows a sixth embodiment of the present invention. That is, a free-running type relay roller 95 is arranged between adjacent groups,
Therefore, the cost can be reduced. In the above embodiment, the drive roller 20 having the passive part 24 and the like interlocking with the chain 40 is shown. However, in the first invention, a drive roller having a built-in motor, a drive roller interlocking with a belt, or the like may be used. Good.

In the above embodiment, the drive roller conveyor 10 is arranged in parallel with the idler roller conveyor 80 in the partition 7 of the shelf frame 1, but in the first and second inventions, it is placed on the floor. It may be installed. Further, it may be a type in which only the drive roller conveyor 10 is installed on the floor. In this case,
The drive roller 20 and the idler roller 50 are formed long according to the width of the conveyor. Further, in the third aspect of the present invention, only the drive roller conveyor 10 may be installed in the partition 7 of the shelf frame 1.

In the above-described embodiment, the drive roller 20 has the passive portion 24 and the tubular member 25 integrated with each other, and the rubber tube 32 fixed to the tubular member 25 is brought into pressure contact with the inner surface 30a of the roller body 30 by expansion, so that the passive portion is driven. Although the rotation of the 24 side is transmitted to the roller body 30, in the second to fourth inventions, the passive portion 24 and the cylindrical member 25 are separately fitted onto the roller shaft 21 so as to freely rotate. Rubber tube 32 fixed to the tubular member 25
May be pressed against the inner surface 30a of the roller body 30 and the outer surface of the passive portion 24 by expansion.

In the above embodiment, the pallet 86 is sequentially fed and stored in a plurality of groups A to H, but in the present invention, the pallet 86 supplied to the upstream end of the transfer path 8 is fed to the downstream end side. It may be of a type in which they are conveyed all at once.

[0057]

According to the first aspect of the present invention having the above-described structure, the number of drive rollers provided with the drive means can be reduced, the entire structure can be simply and inexpensively constructed, and the idler roller can be forcibly rotated to convey the material to be conveyed. Sufficient conveying force can be applied to the object. Moreover, at the same time as switching to non-driving, the rotation of the driving roller and the idler roller can be quickly and automatically stopped without any control.

According to the second aspect of the present invention having the above-mentioned structure, the driving roller can be easily and reliably switched between driving and non-driving, and the exposed portion can be reduced to be compact.

Further, according to the third aspect of the present invention having the above-mentioned structure, the conveyed object supported by the drive roller and the idler roller of the drive roller conveyor which is forcibly rotated in each of the compartments is provided on the horizontal conveying path. Stable transportation with sufficient transportation force. Moreover, since the moving speed can be kept constant, stable transportation can be performed. Further, it can be arranged horizontally, the conventional dead space of inclination can be eliminated, and a shelf facility with good storage efficiency can be provided.

Further, according to the fourth aspect of the present invention having the above-mentioned structure, in each partition, the drive roller and the idler roller of the drive roller conveyor which is forcibly rotated are supported between the idler roller and the support roller of the idler roller conveyor. The conveyed object can be stably conveyed with a sufficient conveying force on the horizontal conveying path by the conveying force on the drive roller conveyor side.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a main part of a drive roller conveyor, showing a first embodiment of the present invention.

FIG. 2 is a vertical sectional front view of a drive roller portion of the drive roller conveyor.

FIG. 3 is a partially cutaway front view of a transmission roller portion of the drive roller conveyor.

FIG. 4 is a schematic side view showing a usage state of the drive roller conveyor.

FIG. 5 is a front view of a shelf facility using the drive roller conveyor.

FIG. 6 is a side view of a shelf facility using the drive roller conveyor.

FIG. 7 is a partially cutaway side view of the main part of the drive roller conveyor, showing the second embodiment of the present invention.

FIG. 8 is a schematic side view of a main part of a drive roller conveyor showing a third embodiment of the present invention.

FIG. 9 is a schematic side view of a main part of a drive roller conveyor showing a fourth embodiment of the present invention.

FIG. 10 is a schematic side view of a main part of a drive roller conveyor showing a fifth embodiment of the present invention.

FIG. 11 is a schematic side view of a main part of a drive roller conveyor showing a sixth embodiment of the present invention.

[Explanation of symbols]

 1 Shelf Frame 7 Partition 8 Transfer Route 10 Drive Roller Conveyor 11 Frame 18 Guide Rail 19 Guide Rail 20 Drive Roller 21 Roller Shaft 24 Passive 25 Pipe Member 30 Roller Body 30a Roller Body Inner Surface 32 Rubber Tube (Flexible Body) ) 35 Pressurizing chamber 36 Fluid supply / discharge path 37 Sealing device 40 Chain (driving body) 50 Idler roller 51 Roller shaft 52 Roller body 60 Transmission roller 61 Roller shaft 62 Roller body 63 Rubber ring 67 Compression spring (elastic body) 74 Photoelectric Switch (load detector) 80 Idler roller conveyor 81 Frame 82 Support roller 85 Load (object to be transported) 86 Pallet 91 Movable support frame A to H groups

Claims (4)

[Claims] 1. A frame is provided with a plurality of drive rollers, an idler roller located between these drive rollers, and a transmission roller which is in contact with the adjacent drive roller and idler roller from below. The drive roller conveyor is characterized in that the transmission roller is freely rotatable and is configured to come into contact with the drive roller and the idler roller from below by an elastic biasing force of an elastic body. 2. A drive roller, a roller shaft supported by a frame, a passive portion externally fitted to one end of the roller shaft and a tubular member, and a roller main body fitted to the roller shaft so as to freely rotate. The flexible member is externally fitted to the tubular member, and a fluid supply / discharge passage is formed from the roller shaft to the tubular member so as to open inside the flexible member. 2. The drive roller conveyor according to claim 1, wherein when the fluid is supplied through the discharge passage, the fluid expands and comes into pressure contact with the inner surface of the roller body to transmit the rotation of the passive portion side to the roller body. 3. A plurality of partition sections are formed by a shelf frame, and a drive roller conveyor is disposed in each partition section with a horizontal transport path, and the drive roller conveyor is mounted on a frame attached to the shelf frame. A plurality of drive rollers, an idler roller positioned between these drive rollers, and a transmission roller which is abuttable and idlerly contactable with the adjacent drive roller and idler roller from below are arranged. Shelf equipment using a drive roller conveyor, characterized in that an elastic body for abutting and biasing the rollers is provided. 4. A drive roller conveyor and an idler roller conveyor are provided in parallel in each of the compartments with a horizontal transport path, and the idler roller conveyor has a frame attached to a shelf frame and an idler roller attached to the frame. 4. The shelf facility using a drive roller conveyor according to claim 3, wherein the shelf facility is configured by a plurality of support rollers arranged rotatably.