JPH08143121A - Conveyor having elevating mechanism and roller - Google Patents

Abstract

PURPOSE: To provide a conveyor device having an elevating mechanism which is simple and inexpensive in constitution, and capable of arbitrarily selecting the operational/non-operational condition. CONSTITUTION: Rollers 20 of same diameter and rollers 30 of different diameter consisting of a plurality of bodies of revolution of different diameter are provided on a frame 11 to make a conveyor device 10. A rail sliding plate 15 is installed in a groove part formed in a loading platform of a truck, and a rail 16 for elevation is installed thereon. An inclined part 16a is formed on the part of the rail 16 for elevation corresponding to a small diameter body 35 of revolution of the rollers 30 of different diameter. When the rail 16 for elevation is moved rearward of the loading platform by a moving means 17, the small diameter body 35 of revolution is moved along the inclined surface of the inclined part 16a, and the conveyor device 10 is elevated, and the rollers 20 of same diameter and the rollers 30 of different diameter are projected out of the groove part to realize the operational condition. The non-operational condition can be realized by moving the rail 16 for elevation in the reverse direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device with an elevating mechanism using a free roller conveyor, and more particularly to a conveyor device with an elevating mechanism capable of arbitrarily selecting an operating / non-operating state, and a conveyor device for such a conveyor. The present invention relates to a roller, particularly a roller including a plurality of rotating bodies having different outer diameters.

[0002]

2. Description of the Related Art A conveyor device using a free roller conveyor is constructed by mounting a plurality of rollers rotatably on a frame arranged in parallel at predetermined intervals, placing an object to be conveyed on the rollers and applying a light force. It conveys to a desired position. Therefore, due to its nature, it is difficult to fix the transported object stationary on the roller without special means.

For example, when a free roller conveyor (hereinafter simply referred to as "conveyor") is applied to a truck, a light force is applied to the pallets on the conveyor when loading or unloading the pallets to be transported onto the bed of the truck. However, it is very dangerous for the pallets to move on the conveyor while the truck is running, and thus some fixing means was required.

[0004]

In order to solve this problem, for example, a groove is formed on the bed of a truck, and the conveyor is stored in the groove so that the conveyor can move up and down. When the conveyor is used, the conveyor is lifted above the groove. On the other hand, when the conveyor is not in use, that is, when the truck is running, the conveyor is lowered into the groove and stored to make it inoperative, so that the object to be conveyed is placed directly on the platform and fixed. Just configure it.

As a means for moving the conveyor up and down in the groove as described above, a jack utilizing hydraulic pressure or pneumatic pressure, a hose capable of expanding and contracting, and the like are known. However, such a means requires a hydraulic pressure source or a pneumatic pressure source, and has a complicated structure, which is economically and structurally problematic.

Therefore, a main object of the present invention is to provide a conveyor device with a lifting mechanism, which has a simple and inexpensive structure and which can arbitrarily select an operating state and a non-operating state.

Another object of the present invention is to provide a roller composed of a plurality of rotating bodies having different outer diameters, which can be applied to, for example, a conveyor device with a lifting mechanism as described above.

[0008]

The above object can be achieved by a conveyor device and a roller with a lifting mechanism according to the present invention.
In summary, according to the present invention, a frame extending in one direction is provided with a plurality of rollers of the same diameter composed of a single rotating body and rollers of different diameters composed of a plurality of rotating bodies having different outer diameters. An elevating rail is laid in a recess formed so that the elevating rail can be accommodated, and an inclined portion inclined in the longitudinal direction of the elevating rail is provided at a portion of the elevating rail that comes into contact with the small-diameter rotating body of the different diameter roller. And a moving mechanism for moving the elevating rail along the longitudinal direction thereof.

It is preferable that a rail slide plate for facilitating the movement of the lifting rail is installed in the recess.

It is preferable that recesses are provided at the lower portion and the higher portion of the inclined portion so that the small-diameter rotating body is stationary.

The frame has vertical wall portions extending in parallel and horizontal portions connecting the vertical wall portions, and the horizontal portions are respectively formed with openings for exposing the first and second rollers. It is preferable that

According to another aspect of the present invention, there is provided a roller characterized in that a plurality of rotating bodies having different outer diameters are provided on the same shaft.

The plurality of rotating bodies include one cylindrical rotating body and two rotating bodies provided on both sides of the cylindrical rotating body having an outer diameter smaller than that of the cylindrical rotating body. It is preferable to include.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A conveyor device with a lifting mechanism and rollers according to the present invention will be described in more detail with reference to the drawings.

First, the construction of the conveyor device in a non-operating state will be described with reference to FIGS. In the description of the present embodiment, a case where the conveyor device is applied to a truck bed as shown in FIG. 8 will be described.

As can be understood from FIG. 2, a conveyor device 10 composed of a free roller conveyor has a frame 11 formed of a single plate material and having a U-shaped cross section with an open bottom surface. Two kinds of rollers arranged at a predetermined interval, that is, the same diameter roller 20 which is a first roller made of a single rotating body and a different diameter which is a second roller made of a plurality of rotating bodies having different outer diameters. And a roller 30. In the case of this embodiment, as shown in FIG.
The same-diameter rollers 20 and the different-diameter rollers 30 are alternately arranged.

As shown in FIG. 2, the frame 11 includes vertical wall portions 11a, 11a and a horizontal portion 11b connecting the upper ends of the vertical wall portions 11a, 11a. The horizontal portion 11b has rollers 20 of the same diameter and rollers of different diameters. A window portion 11c which is an opening portion for the same diameter roller and a window portion 11d which is an opening portion for the different diameter roller are exposed. Further, the window portion 11 for rollers of the same diameter
c and the vertical wall portion 11 corresponding to the different diameter roller window portion 11d
Support grooves 11e and 11f for supporting the later-described rotating shafts of the same-diameter roller 20 and the different-diameter rollers 30 are provided in a and 11a, respectively.

The frame 11 is provided not only with the vertical wall portions 11a and 11a arranged in parallel but also with the horizontal portion 11b for connecting the both, so that the operator can avoid unnecessary accidents and the inside of the structure can be improved. Its main purpose is to prevent the intrusion of foreign matter, but also to improve the dimensional accuracy.

In the case of the present embodiment, as shown in FIG. 8, the conveyor device 10 has a pair of recesses or groove portions 1 extending in the front-rear direction at intervals in the width direction of the loading platform D of the truck.
2 and 12, respectively. As is clear from FIGS. 1 to 3, the rail slide plate 1 is provided on the surface in the groove 12.
5 is installed, and an elevating rail 16 is slidably arranged on the rail slide plate 15. Further, a moving device for moving the elevating rail 16 in the front-back direction of the loading platform D at the rear end of the elevating rail 16. 17 (FIG. 8) are connected.

As shown in FIG. 2, a guide groove 15a is formed on the upper surface of the rail sliding plate 15 along the longitudinal direction thereof, and a guide groove 15a is fitted on the lower surface of the lifting rail 16. The convex portion 16d is provided. Therefore,
The lifting rail 16 is a guide groove 15a of the rail sliding plate 15.
It will be moved while being guided by.

The elevating rail 16 is provided with an inclined portion 16a for directly elevating the conveyor device 10, as will be described later in detail.

Further, the front end portion of the conveyor device 10 is swingably locked to the cargo bed wall portion D1 by a locking member 19 via the frame 11.

Here, the same-diameter roller 20 and one different-diameter roller 30 constituting the conveyor device 10 are shown in FIGS.
This will be described below.

As shown in FIG. 4, the roller 20 having the same diameter has a cylindrical roller body 21, bearings 22, 22 provided in the cylinder of the roller body 21, and a rotary shaft 23 inserted in the bearings 22, 22. Also, the bearings 22 and 22 are roughly constituted by bearing protecting portions 24 and 24 for holding the bearings 22 and 22 at predetermined positions of the roller body and preventing foreign matter from entering the rotary bearing portion.

As shown in FIG. 5, the different-diameter roller 30 has a cylindrical roller body 31, bearings 32, 32 provided in the cylinder of the roller body 31, and a rotating shaft 33 inserted into the bearings 32, 32. The bearings 32, 32 are held at predetermined positions in the roller body, and at the same time, the bearing protection portions 34, 34 for preventing foreign matter from entering the rotation bearing portion, and the rotation shaft 33 coaxially outside the bearing protection portions 34, 34. The small-diameter rotating bodies 35, 35 attached to the In the present embodiment, the small-diameter rotating body 35 is a bearing as shown in the figure,
It may be a roller or a bush.

Different-diameter roller 30 constructed as described above
For example, the roller body 31 can rotate clockwise, while the small-diameter rotating body 35 can rotate counterclockwise independently. Incidentally, conventionally, as an example in which different rotating bodies are added on the same shaft, one in which a frustoconical roller is added to prevent meandering of the belt conveyor is known.
The different-diameter roller as in this embodiment is not known and can be applied to a conveyor device with a lifting mechanism as described later, and a signal cable or a transmission line can be passed to the side of the conveyor. It can be possible with a simple mechanism or structure.

Next, referring again to FIGS.
6, especially the inclined portion 16a will be described. The elevating rail 16 laid on the rail slide plate 15 is provided with inclined portions 16a at positions corresponding to the moving range of the small diameter rotating body 35 of the different diameter rollers 30. Inclined portion 16a
Is formed so as to rise along the longitudinal direction of the elevating rail 16 from the rear part to the front part of the loading platform D in the present embodiment, and the small-diameter rotating body 3 is provided at the lowest part and the highest part of the inclined part 16a.
A lower concave portion 16b and an upper concave portion 16c are provided to make 5 stand still.

Since the elevating rail 16 is constructed as described above, when the elevating rail 16 is moved to the rear of the loading platform D, the small diameter rotating body 35 of the different diameter roller 30 is inclined as shown in FIG. From the stationary state, which is located in the lower concave portion 16b of 16a, the small-diameter rotating body 35 rises along the inclined portion 16a, and reaches the upper concave portion 16c and becomes stationary as shown in FIG. At this time, the rotating shaft 23 of the same diameter roller 20 moves up as the rotating shaft 23 moves along the groove 11e of the frame 11, and the rotating shaft 33 of the different diameter roller 30 rotates.
The frame 11 together with the groove 11f is lifted.

As a result, the conveyor device 10 as a whole rises, the rollers 20 and 30 project from the groove 12 of the loading platform, and the conveyor device 10 is activated, as can be seen from FIG. The amount of protrusion of the rollers 20 and 30 depends on the inclined portion 16
It can be adjusted by adjusting the height of a.

On the contrary, when the lifting rail 16 is moved to the front of the loading platform D, the small-diameter rotating body 35 of the different-diameter roller 30 is rotated from the stationary state in which it is located in the upper concave portion 16c of the inclined portion 16a as shown in FIG. The body 35 descends along the inclined portion 16a, reaches the lower concave portion 16b, and becomes stationary as shown in FIG. As a result, the entire conveyor device 10 descends, and the rollers 20 and 30 move to the groove 12 of the loading platform D as shown in FIG.
Once housed within, the conveyor system 10 is deactivated.

The moving means 17 of the lifting rail 16 is
As shown in FIG. 8, it is composed of a frame 17b which is rotated around a pivot 17a, and is connected to the lifting rail via an appropriate means formed at the rear end of the lifting rail 16. Then, by rotating the frame body 17b in the direction of the arrow, the elevating rail 16 moves to the rear of the loading platform, and the conveyor device 10 becomes the operating state as described above. On the other hand, by rotating the frame body 17b in the direction opposite to the arrow, the elevating rail 16 moves to the front of the loading platform, and the conveyor device 10 is deactivated.

Further, as the above-mentioned appropriate means, for example, as shown in FIG. 9, it is possible to use a claw-shaped flat tooth means 40 which can be engaged with and disengaged from above and below. In the figure, spur tooth means 4
0 is a lower spur tooth 41 formed at the rear end of the lifting rail 16
And an upper spur tooth 42 that meshes with the lower spur tooth 41, and the upper spur tooth 42 is connected to a pulling tool 43. Also, upper and lower spur teeth 4
1, 42 are fixed so as not to move in a meshed state by a chet 44 provided on the frame 11.
Further, a tension spring (not shown) is attached to the front end portion of the frame 11 to constantly urge the frame 11 in the forward direction.

In such a structure, the conveyor device 1
In order to set 0 to the operating state, the pulling tool 43 is rotated around the fulcrum 43a in the direction of the arrow against the biasing force of the tension spring, the spur tooth means 40 is moved backward, and the roller 20, Thirty
Is raised and fixed by the ratchet 44.

On the other hand, in order to make the conveyor device 10 inoperative, the fixed state by the ratchet 44 is released, the spur tooth means 40 is moved forward by the urging force of the tension spring, and the rollers 20, 30 are moved as described above. Lower it.

The conveyor device with the lifting mechanism of this embodiment is
Due to the above configuration, the moving means 17
Moves the raising / lowering rail 16 in the front-back direction of the loading platform, and the different-diameter rollers 30 are provided along the inclined portion 16a of the raising / lowering rail 16.
The small-diameter rotating body 35 is rotated to raise and lower the conveyor device 10. As a result, the rollers 20 of the conveyor device 10,
30 protrudes from or sinks into the groove 12 and allows the conveyor device 10 to be optionally activated or deactivated.

In this embodiment, the case where the lifting / lowering conveyor device is applied to the bed of the truck has been described as an example, but the present invention is not limited to this, and the object to be conveyed is stationary or fixed on the conveyor. It goes without saying that it can be applied to all of the above-mentioned applications.

[0037]

As is apparent from the above description, in the conveyor device with the lifting mechanism according to the present invention, the frame extending in one direction has the first roller made of a single rotating body and a plurality of different outer diameters. A plurality of second rollers each composed of a rotating body, and an elevating rail is provided in a recess formed to accommodate the frame, and a small-diameter rotating body of the second roller of the elevating rail is provided. In the part that contacts each other,
By forming an inclined portion that is inclined in the longitudinal direction of the elevating rail and providing a moving unit that moves the elevating rail in the longitudinal direction, the elevating rail is moved in the longitudinal direction by the moving unit. The small-diameter rotating body of the different-diameter roller moves along the inclined portion, whereby the first roller and the second roller protrude from the groove or settle into the groove, and the conveyor device is operated or not operated. It can be activated. In this way, the operating state and the non-operating state can be arbitrarily selected with a simple and inexpensive structure, the operability is good, and the range of application can be widened.

Since the roller according to the present invention is provided with a plurality of rotating bodies having different outer diameters on the same shaft, the roller can be suitably used, for example, in the above conveyor device with a lifting mechanism and other applications.

[Brief description of drawings]

FIG. 1 is a side view showing an inoperative state of an embodiment of a conveyor device according to the present invention.

FIG. 2 is a partial cross-sectional perspective view of the conveyor device of FIG.

3 is a cross-sectional view of the conveyor device taken along the line AA in FIG.

FIG. 4 is a cross-sectional view showing an example of rollers having the same diameter.

FIG. 5 is a sectional view showing a different diameter roller according to the present invention applied to a conveyor device.

FIG. 6 is a side view showing the conveyor device in an operating state.

FIG. 7 is a sectional view taken along the line BB in the figure.

FIG. 8 is a perspective view showing a state in which the conveyor device according to the present invention is applied to a truck bed.

FIG. 9 is an explanatory view showing an example of a moving means of a lifting rail.

[Explanation of symbols]

 10 Conveyor device 11 Frame 11a Vertical wall part 11b Horizontal part 11c Same-diameter roller window part (opening part) 11d Different-diameter roller window part (opening part) 12 Groove part (concave part) 15 Rail sliding plate 16 Elevating rail 16a Inclined part 16b Lowermost part (lower concave part) 16c Highest part (higher concave part) 17 Moving means 20 Same diameter roller (first roller) 30 Different diameter roller (second roller) 31 Roller body 33 Rotating shaft 35 Small diameter rotating body

Claims (6)

[Claims] 1. A frame extending in one direction is provided with a plurality of first rollers composed of a single rotating body and a plurality of second rollers composed of a plurality of rotating bodies having different outer diameters. An elevating rail is laid in a recess formed so that it can be accommodated, and an inclined portion that is inclined in the longitudinal direction of the elevating rail is provided at a portion of the elevating rail that comes into contact with the small-diameter rotating body of the second roller. A conveyor device with a lifting mechanism, characterized in that it is formed and the lifting rail is movable along its longitudinal direction. 2. A conveyor device with a lifting mechanism according to claim 1, wherein a rail slide plate for facilitating the movement of the lifting rail is installed in the recess. 3. The conveyor device with an elevating mechanism according to claim 1, wherein recesses are provided in the low portion and the high portion of the inclined portion for stopping the small-diameter rotating body, respectively. 4. The frame has vertical wall portions extending in parallel and horizontal portions connecting these vertical wall portions, and the horizontal portions respectively have openings through which the first and second rollers are exposed. The conveyor device with a lifting mechanism according to claim 1, wherein the conveyor device is formed. 5. A roller comprising a plurality of rotating bodies having different outer diameters provided on the same shaft. 6. The rotating body comprises one cylindrical rotating body, and two rotating bodies provided on both sides of the cylindrical rotating body having an outer diameter smaller than that of the cylindrical rotating body. The roller of claim 4, including a body.