JP3290418B2 - belt conveyor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor having legs, and more particularly, to a belt conveyor capable of easily exchanging a belt mounted on a belt conveyor body provided with legs.

[0002]

2. Description of the Related Art As shown in FIG. 15, there is a conventional belt conveyor 100 in which a driving mechanism 103 for driving and rotating a belt 104 is provided on a return side of a conveyor body 101. The above-mentioned belt conveyor 100 has rollers 102a,
102b, and both rollers 102a, 1
A transport path 105 for transporting the transported article on the upper surface of the conveyor main body 101 is formed by laying an endless belt 104 between 02b.

In a belt conveyor 100, a conveyor body 101 serving as a machine frame is formed in a substantially long band shape in a plan view.
4 and the lower surface side of the conveyor body 101 is configured as a return path of the belt 104. The driving mechanism 103 for driving the belt 104 is connected to the conveyor body 10.
1, the driving roller 106 and the snap roller 107, which will be described later,
The belt 104 is driven and rotated by contacting the belt 104 in a wound form.

The drive mechanism 10 of the belt conveyor 100
3 is a case 103 provided on the lower surface of the conveyor body 101.
The driving roller 106 and the two snap rollers 107 are provided inside a. The drive roller 106 is supported horizontally in a state of horizontally extending over both left and right side surfaces of the case 103a. And a sprocket 109a provided at one end of the drive roller 106;
An endless chain 110 communicates with a sprocket 109b provided on the drive motor 108, so that the drive motor 108 is rotatably supported.

[0005] Above the driving roller 106, two snap rollers 107 are juxtaposed in parallel at appropriate intervals and are rotatably supported. And the belt 10
4 is wound around the inside of the two snap rollers 107 and is wound around the outer periphery of the lower drive roller 106, so that the belt 1
04 is brought into contact with an appropriate pressing force. When adjusting the tension of the belt 104, the distance between the two snap rollers 107 is reduced or widened to increase or decrease the degree of retraction of the belt 104, and
The pressing force applied to the outer periphery of 6 is adjusted.

On the other hand, legs 111 are provided at both side portions near both ends of the belt conveyor body 101 configured as described above. That is, the conveyor body 101 is supported at a predetermined height by the four legs 111.

[0007]

By the way, in the case of the belt conveyor 100 configured as described above, for example, the belt 104 is replaced by long-term use, or the belt 104 is removed and maintenance work in the drive mechanism 103 is performed. It may be necessary to do so. In this case, both rollers 102a, 102 provided at both ends of the conveyor body 101 are used.
The belt 10 can be adjusted by moving the belt 2b toward the center.
Release the tension of 4. Further, the belt 104 is moved to the driving mechanism 1 with the case 103a of the driving mechanism 103 opened and the driving roller 106, the two snap rollers 107, and the like removed.
Work to remove from 03. Further, in the above-described state, the two legs 111 on one side of the conveyor main body 101 hinder the belt 104 from being pulled out toward one side.
After removing these two legs 111 from the uppermost mounting portion, the above-described belt 104 is connected to the conveyor body 101.
Was pulled out towards one side. But,
As described above, the belt 104 is removed by disassembling the drive mechanism 103 to remove the belt 104, and removing the belt 104 in a loose state by pulling the belt 104 to one side of the conveyor body 101. It is necessary to remove both legs 111 provided on one side of the main body 101, and in particular,
The work to remove from 1 was very troublesome. After the above operation, the belt 104 is wound around the conveyor body 101 and the drive mechanism 103 in a reverse process to the above process, and then the removed legs 111 are attached to the conveyor body 10.
Since the work of attaching the belt to the belt 1 was required again, a belt conveyor capable of easily performing the work of removing and attaching the belt as described above has been desired.

On the other hand, in the above-mentioned belt conveyor, a belt conveyor 100 with legs 111 'as shown in FIGS. 16 and 17 is used to easily remove and mount the belt 104 from the conveyor body 101. 'Has been developed. This belt conveyer 100 'has a conveyer main body 101 and a conveyer main body 101 for driving and rotating a belt 104 in the same manner as the belt conveyor 100 shown in FIG. However, the leg 111 ′ of the belt conveyor 100 ′ is formed by bending a substantially L-shaped front view using a steel tube material or the like, and the upper end thereof is formed on the frame 101 b of the side of the conveyor body 101 (the other side). By being attached and fixed, the conveyor body 101 is supported at a predetermined height by the pair of legs 111 '. That is, the leg 111 'and the conveyor main body 101 are configured to support the conveyor main body 101 in a cantilevered state at the upper end of the leg 111', that is, in a supporting state in which the leg 111 'and the conveyor main body 101 are substantially U-shaped when viewed from the front. It is. In the belt conveyor 100 ′ configured as described above, since the vertical portion is eliminated on the side (one side) of the leg 111 ′, the slack belt 104 is directed outward from the frame 101 a on one side of the conveyor body 101. The belt 104 can be inserted from one side of the conveyor main body 101 at the time of mounting, so that there is an advantage that the belt 104 can be easily removed and attached. However, since the leg 111 'of the belt conveyor 100' configured as described above supports the conveyor body 101 in a cantilever state at the support portion P at the upper end thereof, an excessive load is applied to the support portion P. become. Therefore, even if the strength of the support portion P is increased, there is a limit in receiving the load from the conveyor body 101 only by the support portion P. As a result, the belt conveyor 10 having the cantilevered legs 111 'as described above
At 0 ', the width of the conveyor body 101 could not be sufficiently widened in order to avoid an increase in the load applied to the support portion P, and the effective width of the belt was limited to a narrow one.

The present invention has been made in view of the above-mentioned circumstances, and relates to a belt conveyor with legs as described above, which makes it possible to easily perform belt replacement work even with a wide belt conveyor. The reason is to provide functions reasonably.

[0010]

In order to solve the above-mentioned problems, a belt conveyor according to the present invention has a pair of rollers arranged at the start and end of a conveyor body, and an endless belt is provided between the two rollers. And a drive mechanism provided with a drive roller for driving and rotating the belt in contact with the return path side of the belt, at an intermediate portion on the return path side of the conveyor body, and in the vicinity of both ends of the conveyor body. In a belt conveyor provided with legs for supporting the same main body at a predetermined height on one side and the other side, an intermediate portion of at least one of the legs provided on one side and the other side of the conveyor main body. The upper and lower mating portions of the mating portion are provided with insertion rollers, respectively. When the belt is rotatably joined and the belt is removed from the conveyor body, the belt is disengaged from the drive mechanism, and the return side of the belt loosened between the two rollers of the conveyor body is moved to the conveyor body. The belt is detached from one side or the other side of the belt conveyor body by being inserted between the two insertion rollers of the mating portion provided on the leg and pulled out from the inside.

According to the above-described means, a driving mechanism for driving and rotating the belt by the driving roller is provided at an intermediate portion on the return path side of the conveyor body. Further, legs for supporting the conveyor body at a predetermined height are provided on one side and the other side near both ends of the conveyor body. An intermediate portion of at least one of the legs provided on one side and the other side of the conveyor body is provided with an attachable / separable mating portion. Insertion rollers are provided at both the upper and lower mating portions of the mating portion, and the outer peripheral surfaces of the upper and lower mating rollers are freely rotatable with each other. That is, the load applied to the two legs provided with the mating portions is supported via the mating of the upper and lower insertion rollers.

When the belt is removed from the conveyor main body, the belt is released from engagement with the drive mechanism, and the belt on the return path is provided with two legs provided on at least one of the conveyor main body and the other side. The upper and lower insertion rollers are rotated and the belt is smoothly moved toward one side or the other side of the conveyor body by rotating the upper and lower insertion rollers by inserting them from the inside between the outer peripheral surfaces of both insertion rollers of the mating section and pulling them out. Can be removed. When the belt is mounted, an appropriate part on the belt return path is inserted between the outer peripheral surfaces of both the insertion rollers of the abutting portion of the two legs from the outside and pulled inward, so that the conveyor body and It can be mounted around the drive mechanism. The above-mentioned mating portion may be provided on one of the legs on one side of the conveyor body or on the other side, or may be provided on both the legs on one side and the other side of the conveyor body. Is also good. Further, as described above, in the case where the mating portions are provided on both the legs on one side and the other side of the conveyor body,
The belt attached to the conveyor body can be removed and attached from any direction on one side or the other side of the conveyor body.

According to a second aspect of the present invention, there is provided a belt conveyor comprising a member on an upper mating portion side of a mating portion provided at an intermediate portion of a leg supporting the conveyor body, and a member on a lower mating portion side of the leg. Are detachably connected to each other by a connecting member. In this case, in the mating portion of the detachable legs, the member on the upper mating portion side and the member on the lower mating portion side can be firmly connected by a connecting material. It is possible to reliably prevent rattling or displacement of the joints of the legs due to the connection force of the leg. In a state where the connecting member is removed, the outer peripheral surfaces of the upper and lower insertion rollers can be brought into contact with and separated from each other, and the belt can be inserted between the insertion rollers as described above.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. Conveyor A shown in FIGS. 1 to 6
Is provided with a drive mechanism 50 at an intermediate portion on the return path side of the conveyor body a, and supports the conveyor body a at a predetermined height on one side and the other side near both ends of the conveyor body a. A leg 10 is provided.

Conveyor body a of the belt conveyor A
Has frames 1a and 1b arranged along both left and right sides. The two frames 1a and 1b are connected to each other by a substantially flat connecting plate 1c which supports the forward path side of the belt 3 serving as the conveying surface a1 of the conveyed article c from the lower surface, and is parallel in plan view. Connected to. At both ends of the left and right frames 1a, 1b connected in parallel as described above, folding rollers 2a, 2b are erected, and the belt 3 constituting the transport path a1 between the rollers 2a, 2b as described above. Is multiplied.

Although not provided on the belt 3 and the connecting plate 1c of this embodiment, a guide having a substantially V-shaped cross section is provided along the center of the connecting plate 1c connecting between the frames 1a and 1b as described above. The groove may be recessed, and a guide bar that fits in a shape conforming to the guide groove may be provided along the center of the back surface of the belt 3 that slides along the connecting plate 1c. (Not shown). In this case, by fitting the concave guide groove and the convex guide bar, it is possible to prevent the belt 3 from meandering in the left-right direction during the rotation of the belt 3. When the guide groove and the guide rail are provided as described above, a similar guide groove is formed in the center of both rollers 2a and 2b, and also along the outer peripheral surface of the center of the drive roller 7 described later.

A driving mechanism 50 is provided at the center of the conveyor body a on the return path side so that the belt 3 can be easily attached and detached. The driving roller 7 included in the driving mechanism 50 includes: A pair of snap rollers 8a, 8b
Thus, the belt 3 wrapped around the drive roller 7 is sandwiched from both sides to transmit the drive rotation of the drive roller 7 to the belt 3 (FIG. 1).

At substantially the center of the frames 1a and 1b installed along the left and right sides of the conveyor body a, support plates 5 are respectively provided.
3 is mounted and supported, and the lower side is hung downward, and is mounted and supported on the frames 1a and 1b (FIG. 3). Bearing portions 54a and 54b with bearings for supporting the drive roller 7 are provided substantially at the center of both support plates 53 which are attached and supported so as to hang down on the return path side of the conveyor body a as described above. In between, the drive roller 7 is horizontally supported horizontally and rotatably supported. The drive roller 7 is formed by inserting a support shaft 7b into a shaft core of a drive roller body 7a formed in a hollow shape. Both ends of the support shaft 7b are provided on bearing portions 54 provided on the support plates 53.
a and 54b so as to be rotatably supported by fitting.

One end of the support shaft of the driving roller 7 protrudes through the bearing 54a, and a sprocket 71 is attached and fixed to the protruding portion. On the other hand, next to the sprocket 71 of the drive roller 7 projecting from the one frame 1b of the conveyor body a, the drive motor 4 with the speed reducer 4a is installed via the support frame 44 fixed to the support plate 53. (FIG. 2). And the above-mentioned reduction gear 4
A sprocket 41 is provided on an output shaft (a) (not shown), and an endless chain 43 connects the sprocket 41 and the sprocket 71 of the driving roller 7. Therefore, when the driving motor 4 is driven to rotate, the driving force is transmitted to the driving roller 7 via the sprocket 41, the chain 43, and the sprocket 71, and the driving roller 7 is driven to rotate at a predetermined rotation speed.

The portion of the belt 3 located at the intermediate portion on the return path is wound around the drive roller 7 in a state of contacting over a range of about 180 ° on the outer periphery on the lower surface side (FIG. 4). On both sides of the driving roller 7, a pair of two snap rollers 8a and 8b each supported by a roller support 92 are arranged on both sides of the driving roller 7, and the belt is moved by the snap rollers 8a and 8b. 3, the driving roller 7 which is wound around the return path is elastically pressed from both sides.

The two snap rollers 8a and 8b are arranged on both sides of the drive roller 7, and these rollers are coaxially supported (FIG. 3). The pair of snap rollers 8a, 8b are rotatably supported on left and right ends of support shafts 95a, 95b, respectively, which are horizontally inserted into and fixed to the distal ends of the support arms 91a, 91b. . That is, a pair of two snap rollers 8
a and 8b have two support arms 91 with exactly the same structure.
a and 91b are coaxially supported at the distal end.

The above-mentioned two support arms 91a and 91b
Are mounted and supported on a roller support 92 which is detachably mounted between the lower sides of the left and right support plates 53 on which the drive roller 7 is mounted. The roller support 92 is a plate-shaped material formed by bending both left and right ends upward in a substantially L-shape, and the bent portions at the left and right ends are fitted into the lower sides of the support plates 53 from outside. By fixing the screws 92 a in a form, the support plates 53 are detachably attached and supported in a state of being bridged between the lower sides of the support plates 53.

A fixing member 93 having a substantially L-shaped cross section is attached and fixed substantially along the center of the upper surface of the roller support 92. In the rising portion 93 ′ of the fixing material 93,
The drive roller 7 is mounted and fixed so that the center portion is located immediately below the shaft core. The pivots 93a of the support arms 91a and 91b project at the same distance in both the left and right directions with the center of the fixing member 93 interposed therebetween. Both pivots 93a are connected to the two support arms 91a,
The arm 91 is detachably inserted into the base end of the arm 91b.
The support arms 91a and 91b and the snap rollers 8a and 8b provided at the ends thereof are supported so as to rotate about the pivot 93a. .

A coil spring 94 is provided between the intermediate portions of the support arms 91a and 91b, which are rotatably supported as described above, near the pivot 93a, and is extended between the support arms 91a and 91b. It is armed in a state. Therefore, the two support arms 91a and 91b and the two snap rollers 8a and 8b are constantly urged in a direction to reduce the distance therebetween by the restoring force of the coil spring 94. That is, the snap rollers 8a and 8b provided at the tips of the support arms 91a and 91b are connected to the belt 3 as described above.
Is pressed with an appropriate pressure against both sides of the outer periphery of the drive roller 7 around which.

That is, the two snap rollers 8a, 8b
Is caused by the pressing force generated by the coil spring 94.
The belt 3 wrapped around the outer peripheral surface of the driving roller 7 is pressed from both sides to apply appropriate tension to the belt 3. Also, the return path side of the belt 3 wrapped around the outer periphery below the drive roller 7 is:
The drive roller 7 and the two snap rollers 8a and 8b are in a state of being sandwiched. When the driving roller 7 is driven to rotate, the belt 3 is driven to rotate by the frictional force generated between the driving roller 7 and the outer peripheral surface. At the same time, both the snap rollers 8 a and 8 b follow the rotation of the belt 3. It will rotate in shape.

Next, the leg 1 supporting the conveyor body a
0 will be described. Legs 10 and 10 'for supporting the conveyor body a at a predetermined height are provided on one side and the other side near both ends of the conveyor body a (FIGS. 1 and 6). Conveyor body a of the legs 10, 10 '
The two legs 10 provided on one side have a function of inserting the belt 3 wound around the conveyor body a and the drive mechanism 50 toward the one side when the belt 3 is pulled out toward the one side. Each of the legs 10 is provided with a separable joint 10e at a position near the upper end of the leg 10. On the other hand, the two legs 10 'provided on the other side of the conveyor body a are attached to the upper ends of the leg members 10a' made of a metal square pipe material or the like.
0b 'is attached and fixed. Then, the mounting plate 10b 'is attached and fixed to the side surface of the frame 1b on the other side of the conveyor body a using the bolts 10d and the nuts 10d', so that the legs 10 'are vertically mounted on the other side of the conveyor body. I support it. Adjustments 10c, 10c 'for height adjustment are screwed to the legs 10' and the lower ends of the legs 10, respectively (FIG. 9).

The mating portion 10e of the leg 10 provided on one side of the conveyor body a comprises an upper mating portion 11 having a mounting plate 11a and a lower mating portion 12 having a receiving plate 12a. is there. Upper mating part 11
The upper side of the mounting plate 11a has a conveyor body a.
Attach and fix to the side surface of one side frame 1a via bolts 10g and nuts 10g '.
a is supported so as to hang down from the frame 1a. Bolt-shaped support shafts 11b are horizontally inserted from the outside to the inside of both sides of the lower side portion of the mounting plate 11a, and the distal ends of both support shafts 11b are supported by insertion rollers 11c to be described later. 11d, and is screwed to both ends of the support shaft 11b.
1d is horizontally mounted and supported along the inside of the mounting plate 11a (FIGS. 5 and 6). As described above, two cylindrical insertion rollers 11c formed of engineer plastic or the like are rotatably fitted on the outer periphery of the support shaft 11d mounted and supported horizontally on the mounting plate 11a. . Further, the insertion roller 1 pivotally supported as described above.
1c is configured such that the lower end of its outer peripheral surface is located at the lowest position among the members constituting the upper mating portion 11 (FIG. 6).

On the other hand, the receiving plate 12a of the lower
Is made of a steel plate having an upper side bent in a substantially L-shaped cross section. The receiving plate 12a is attached and fixed to the upper end of a leg member 10a similar to the leg member 10a 'of the leg 10' on the other side of the conveyor body a, and the receiving plate 12a is bent into a substantially L-shaped cross section as described above. Is configured to extend horizontally toward the inside of the conveyor body a (FIG. 6).

On the horizontal surface formed on the upper side of the receiving plate 12a, a support shaft 12d similar to the support shaft 11d of the above-mentioned upper mating portion 11 is mounted.
d, a bolt-type support shaft 12b vertically inserted from the lower surface side to the upper surface side of the horizontal surface of the receiving plate 12a.
Screw the tip of. Both ends of the support shaft 12d are supported by the two support shafts 12b, and are horizontally supported in a state of being located directly below the upper support shaft 11d. Like the above-described insertion roller 11c, two cylindrical insertion rollers 12c formed of engineer plastic or the like are rotatably fitted on the outer periphery of the support shaft 12d horizontally mounted and supported as described above. I am wearing it. Then, the upper end of the outer peripheral surface of the insertion roller 12c pivotally supported as described above is configured so as to be located at the uppermost position among the members constituting the lower mating portion 12 (FIG. 6).

That is, the insertion roller 11c of the upper attachment portion 11 and the insertion roller 12c of the lower attachment portion 12 installed as described above have their respective axes extending substantially parallel to the frame 1a on one side of the conveyor body a. It is installed as follows.
That is, the axes of the two insertion rollers 11c and 12c are horizontal (FIG. 5) in a side view and 1 mm in a plan view.
It is pivotally supported in a state of overlapping in a book shape. This allows
In a state where the two insertion rollers 11c and 12c are vertically overlapped, the outer peripheral surfaces thereof are in contact with each other (FIG. 6). As a result, the two legs 1 provided on one side of the conveyor body a
The load applied to 0 is supported via the mating of the upper and lower insertion rollers 11c and 12c as described above.

The side surface of the mounting plate 11a of the upper mounting portion 11 and the receiving plate 12a of the lower mounting portion 12
The connecting plate 13 formed in a substantially rectangular shape is provided between
Erection. Along the center of the connecting plate 13
3c is formed, and screws 13a and 13b with handles are inserted into the upper and lower portions of the elongated hole 13c, respectively. Then, the screw portions of the screws 13a and 13b with the handle are screwed into the mounting plate 11a and the receiving plate 12a so as to be inserted into the mounting plate 11a and the receiving plate 12a, respectively.
a and the receiving plate 12a are integrally connected via the connecting plate 13 (FIG. 7). As described above, the connecting plate 1
Numeral 3 is for integrally connecting the mounting plate 11 a of the upper mounting portion 11 and the receiving plate 12 a of the lower mounting portion 12. It is possible to effectively prevent rattling and displacement occurring between the lower mounting portion 11 and the lower mounting portion 12. When the belt 3 is removed, the screws 13a and 13b with both handles are loosened to remove the connecting plate 13, so that the upper and lower insertion rollers 11 are removed.
The belt 3 is ready to be pulled out from the abutting portion between the members c and 12c (FIG. 8).

The legs 10, 1 of the belt conveyor A are provided.
Between the lower portions of the 0 'leg members 10a and 10a', a stay 10h made of a square pipe material or the like is laid on each side, and the distance between the two legs 10, 10 'is made constant via the stay 10h. keeping. A communication pipe 10i is installed and fixed between the two stays 10h, and the legs 10, 10 'provided at the start end of the conveyor body a and the leg 1 at the end are provided.
The interval between 0 and 10 'is always kept constant. Thereby, even when the connecting plate 13 is removed,
Both rollers 11c12c of the mating portion 10e of both legs 10
Are held so that they do not shift or rattle.

Next, a description will be given of removing the belt 3 from the belt conveyor configured as described above.

First, by loosening the screws 92a at both ends of the roller support 92 provided below the drive mechanism 50, the roller support 92 is removed from the lower sides of both support plates 53. Thereby, both the snap rollers 8a and 8b are removed from both sides of the drive roller 7, and both sides of the drive roller 7 are released, and at the same time, the clamping force by both the snap rollers 8a and 8b is released to loosen the tension of the belt 3. Yes (Figure 3).

When the tension of the belt 3 is relaxed as described above, the rollers 2 at the start and end of the conveyor body a
The belt 3 wound between the belts 3a and 2b is pulled toward the side of the conveyor body a and gradually slid, and at the same time, the central portion of the slack belt 3 on the return path is passed through the lower side of the support plate 53, It is in a state where it can be pulled out to the side of the conveyor body a.

When removing the belt 3 disengaged from the drive mechanism 50 as described above, a connecting plate for integrally connecting the mating portions 10e of the two legs 10 provided on one side of the conveyor body a. 13 is removed by loosening the screws 13a and 13b with handles as described above (FIG. 7). Then, the two insertion rollers 11 c, which come into contact with the return path side of the belt 3, which has been relaxed in tension while being wound around the conveyor body a, at the mating portions 10 e provided on the both legs 10.
It is inserted from the inside between the outer peripheral surfaces of 12c and pulled out (FIG. 8). At this time, the upper and lower insertion rollers 11c12c can effectively reduce friction and snagging that occur when the belt 3 is pulled out while rotating so as to follow the pulling out of the belt 3. a can be smoothly removed to one side (FIG. 9).

When attaching the belt 3 removed as described above to the conveyor body a, the insertion rollers 11c,
Belt 3 in a detached state between outer peripheral surfaces of 12c
The appropriate part is inserted from the outside. After being wound between the rollers 2a and 2b of the conveyor body a while being drawn into the inside of the backward leg 10 of the belt 3, the belt 3 is removed by performing a process reverse to the belt 3 removing process described above. Can be wound around the conveyor body a and the drive mechanism 50 and can be mounted again. When the belt 3 is mounted as described above, the connecting plate 13 is laid over the mating portion 10e provided on both legs 10, and the screws 13a and 13b with both handles are screwed and tightened. .

Next, another embodiment of a connecting mechanism for connecting the mating portions provided on the legs 10 on one side of the conveyor body a with a connecting material will be described with reference to FIGS. The mating portion 10e 'of the leg 10 shown in FIGS. 10 and 11 is provided with a frame 1a on one side of the conveyor body a, as described above.
The side of the mounting plate 11a with the bolt 1
0g and a nut 10g 'are attached and supported, and the attachment plate 11a is supported so as to hang down from the side surface of the frame 1a. Further, two support shafts 11b are inserted into both sides of the lower side of the mounting plate 11a, and the distal ends of the two support shafts 11b are inserted into both ends of a support shaft 11d which rotatably supports the insertion roller 11c. By screwing, the support shaft 11d is horizontally mounted and supported along the inside of the mounting plate 11a.

On the other hand, the receiving plate 12a of the lower mounting portion 12
Is formed from a steel plate having an upper side bent in a substantially L-shaped cross section in the same manner as described above. The receiving plate 12a is
It is attached and fixed to the upper end portion of the leg member 10a, and the upper side of the receiving plate 12a having a substantially L-shaped section as described above is configured to extend horizontally toward the outside of the conveyor main body a ( (FIG. 11). A support shaft 1 similar to the support shaft 11d is provided on the upper surface of a horizontal plane formed on the upper side of the receiving plate 12a.
2d, and receiving plates 12d at both ends of the support shaft 12d.
a support shaft 12 vertically inserted from the lower side of the horizontal plane
Screw the end of b. Both ends of a support shaft 12d that rotatably supports the insertion roller 12c are supported by the two support shafts 12b, and the support shaft 12d is horizontally supported with the support shaft 12d positioned directly below the upper support shaft 11d.

As described above, a cylindrical insertion roller 1 made of engineering plastic or the like is provided on the outer periphery of the support shaft 11d and the support shaft 12d supported as described above.
1c and 12c are rotatably fitted in a state of two at a predetermined interval. That is, the two insertion rollers 11 described above
c and 12c are in a state where their outer peripheral surfaces are in contact with each other in a state where they are vertically overlapped (FIG. 10).

A connecting screw 13 'with a handle is inserted through the center of both supporting shafts 11d and 12d which rotatably support the inserting rollers 11c and 12c. The connection screw 13 'serves as a connection member for connecting the support shafts 11d and 12d to each other. The connection screw 13' is inserted from the lower surface side to the upper surface side of the horizontal surface portion of the receiving plate, and is connected to the support shaft 11d and the support shaft 12d. And vertically screwed along the center part 2 of the screw. Then, by the coupling force of the coupling screw 13 ', the central portions of the support shafts 11d and 12d are firmly coupled to each other, and the attachment plate 11a of the mating portion 10e' and the receiving plate 12a are integrally coupled. (FIG. 11). Also, by loosening and removing the connecting screw 13 ', the belt 3 is placed between the mating portions of the two insertion rollers 11c and 12c.
Can be inserted.

Next, another embodiment of the connecting mechanism for connecting the mating portions provided on the legs 10 on one side of the conveyor body a with a connecting material will be described with reference to FIGS. FIG.
2, the mating portion 10e ″ of the leg 10 shown in FIG.
The support shaft 21d is mounted horizontally along the inside of the lower side of the mounting plate 21a which is mounted and supported so as to hang down from the lower surface of the frame 1a on one side of the conveyor body a. Then, the front end of the support shaft 21b, which is inserted into the lower side of the mounting plate 21a, is inserted into both ends of the support shaft 21d and screwed together, so that the support shaft 21d is mounted inside the mounting plate 21a. It is mounted and supported in a horizontal state along. Around the outer periphery of the support shaft 21d, two cylindrical insertion rollers 21c formed of engineer plastic or the like are rotatably fitted so as to be juxtaposed.

On the other hand, the receiving plate 22a attached and fixed to the upper end of the leg member 10a is
The mounting plate 21a is arranged so as to be located on the same side as the mounting plate 21a, and the upper side thereof is opposed to the lower side of the mounting plate 21a at an appropriate interval (FIG. 13).
Along the inside of the upper side of the receiving plate 22a,
d is mounted horizontally and positioned just below the support shaft 21d provided on the mounting plate 21a. Then, the receiving plate 22
The distal end of the support shaft 22b, which is inserted into the upper side of both sides of the support shaft 22d, is inserted into both ends of the support shaft 22d and screwed together, so that the support shaft 22d is in a horizontal state along the inside of the receiving plate 22a. Attach and support with. The support shaft 22
On the outer periphery of d, two cylindrical insertion rollers 21c formed of engineer plastic or the like are rotatably fitted so as to be juxtaposed. That is, the two insertion rollers 21c described above
And 22c are in a state in which their outer peripheral surfaces are in contact with each other so as to be able to approach and separate from each other in a state where they are vertically overlapped.

At one end of each of the support shafts 21d and 22d, fitting portions 21d 'and 22d' are formed so as to protrude. Then, a connecting member 13 ″ is attached to the fitting portions 21d ′ and 22d ′, and one ends of the support shafts 21d and 22d are connected to each other. The connecting member 13 ″ is connected to the two support shafts 21.
fitting portions 21d ', 22 protruding from one end portions of d, 22d
This is a substantially elliptical plate member formed by opening two fitting holes 13d at the same interval as d '. The connecting member 13 ″ is formed so that the two fitting holes 13d are inserted into the fitting portions 2 at one ends of the two support shafts 21d and 22d.
1d 'and 22d', respectively, and the threaded portion of the handle-equipped screw 13e is screwed into a female threaded portion formed along the axis of the fitting portion 22d 'on the lower end side. Then, by tightening the screw 13e with the handle, one ends of the support shafts 21d and 22d are firmly connected to each other, and the mounting plate 21 of the mating portion 10e ″ is attached.
a and the receiving plate 22a are integrally connected (FIG. 12). The fitting between the fitting portions 21d 'and 22d' at one end of the support shafts 21d and 22d and the fitting holes 13d of the connecting member 13 '' also has a function of preventing the support shafts 21d and 22d from rotating. Is what you do. The mating part 10
In the case of e ″, the connection between the support shafts 21d and 22d is released by loosening and removing the screw 13e with the handle, and like the above-mentioned mating portions 10e and 10e ′, the mating of the two insertion rollers 21c and 22c is performed. The belt 3 can be inserted between the portions.

The drive mechanism of the conveyor used in the belt conveyor of the present invention is not limited to the structure of the drive mechanism 50 used in the belt conveyor A of the above embodiment. A structure having a simple structure may be used. For example, a driving mechanism 50 'conventionally used as a driving mechanism for driving and rotating the belt 3, such as a belt conveyor A2 shown in FIG. 14, may be employed. In the belt conveyor configured as described above, the operation of removing and attaching the belt 3 from one side of the conveyor body a can be similarly performed. Further, the above-described conveyors A and A2 are configured such that the mating portions 10 of the legs 10 provided on one side of the conveyor body a can be integrally connected by the connection plate 13, but according to the gist of the present invention, the connection is achieved. It is not always necessary to provide a member as a material, and if there is no problem, the operation may be performed with the upper and lower insertion rollers 11c and 12c overlapped up and down. In the belt conveyors A and A2 of the above-described embodiment, mating portions 10e, 10e 'and 10e''which are insertion portions of the belt 3 are provided on both legs 10, 10' on one side of the conveyor body a. However, in the present invention, the legs provided with the mating portions are not limited to the legs on one side of the conveyor body, and may be provided on the legs on the other side of the conveyor body. May be provided respectively. Also, as described above, when the mating parts are provided on the legs on both sides of the conveyor body,
The belt to be attached to the conveyor body can be removed and attached from any direction on one side or the other side of the conveyor body, so the belt removal and attachment work can be performed according to the installation status of the belt conveyor. Can be performed efficiently.

[0046]

As described above, the belt conveyor of the present invention is provided with a contactable / separable mating portion in the middle of at least one of the legs provided on one side and the other side of the conveyor body. Insertion rollers are provided at the upper and lower mating portions of the mating portion, and the outer peripheral surfaces of the upper and lower inserting rollers are freely rotatably joined to each other. At the time of removal, the engagement between the belt and the drive mechanism is released, and the return path side of the belt loosened between the rollers is moved to both sides of the mating portions of the legs provided on one side or the other side of the conveyor body. The belt can be easily and smoothly removed from one side of the conveyor main body or the other side by inserting the belt between the insertion rollers and pulling the belt outward. At this time, since the upper and lower insertion rollers rotate so as to follow the belt withdrawal, it is possible to effectively reduce snagging and friction when the belt is pulled out, and move the belt to one side or the other side of the conveyor body a. Can be removed smoothly.
Also, when attaching the belt to the conveyor body, insert the appropriate portion on the return path side of the belt from the outside between the two insertion rollers whose outer peripheral surfaces are attached to each other at the joining portion of the two legs. By pulling the belt, the belt can be wound around the conveyor body and the drive mechanism, and can be mounted easily and in a short time. Further, since the above-mentioned belt conveyor body supports one side and the other side of the main body in a double-supported state by legs, the legs are bent in a substantially L-shape like the conventional cantilever type belt conveyor described above. Compared to the one that supports the conveyor body in a cantilever shape at the upper end support, the rigidity and members at the support part of the conveyor can be significantly reduced, and there is a margin in strength even with a wide conveyor body. Can be supported.
Therefore, a wide belt can be used, and the belt can be removed and attached smoothly without removing the leg body from the conveyor body.

According to a second aspect of the present invention, there is provided a belt conveyor wherein a member on an upper mating portion side of a mating portion provided at an intermediate portion of a leg supporting the conveyor body and a member on a lower mating portion side of the same leg are provided. Are detachably connected to each other by a connecting member. Therefore, as described above, in the mating portion provided at the intermediate portion of at least one of the legs provided on one side and the other side of the conveyor body, the member on the upper mating portion side and the member on the lower mating portion side Can be firmly connected by a connecting material, and by the connecting force of the connecting material, during operation of the conveyor or the like,
It is possible to reliably prevent rattling or displacement of the leg provided with the contact portion. In a state in which the connecting member is removed, the outer peripheral surfaces of the upper and lower insertion rollers can be separated from and separated from each other. As described above, the belt is inserted between the two insertion rollers to exchange the belt. Can be performed easily and smoothly.

[Brief description of the drawings]

FIG. 1 is a side view showing a belt conveyor embodying the present invention, with a part cut away.

FIG. 2 is a plan view of the belt conveyor.

FIG. 3 is a longitudinal sectional view showing a driving mechanism portion of the belt conveyor.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is a front view showing an abutting portion of the leg.

FIG. 6 is a sectional view taken along line VI-VI in FIG. 5;

FIG. 7 is a perspective view showing a state in which the connecting plate is removed from the mating portion.

FIG. 8 is a longitudinal sectional view showing a state in which the belt is pulled out from between the insertion rollers of the mating portion of the legs provided on one side of the conveyor body.

FIG. 9 is a perspective view showing a state in which the belt is removed from the conveyor body.

FIG. 10 is a front view showing a partially cut-out portion of a joint portion of a leg in a state where both support shafts are connected using a screw with a handle.

11 is a sectional view taken along line XI-XI in FIG.

FIG. 12 is a partially cutaway front view and a partially enlarged view of a joint portion of a leg in a state where one end portions of both support shafts are connected to each other using a connecting member.

13 is a sectional view taken along line XIII-XIII in FIG.

FIG. 14 is a side view showing a belt conveyor provided with a conventional driving mechanism.

FIG. 15 is a side view showing a conventional belt conveyor.

FIG. 16 is a side view showing a belt conveyor in which a conveyor body is supported by shoulder-held legs.

FIG. 17 is a front view showing the end side of the belt conveyor.

[Explanation of symbols]

 A, A2: Belt conveyor a: Conveyor body a1: Conveying path 1a, 1b: Frame 2a, 2b: Roller 3: Belt 4: Driving motor 7: Driving Rollers 10, 10 '... Legs 10e, 10e', 10e "... Mating part 11 ... Mating part with upper part 12 ... Mating part with lower part 13 ... Connecting plate 13 '...・ Connection screw 13 '' ・ ・ ・ Connection material

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65G 21/06

Claims (2)

(57) [Claims] 1. A roller is laid across a start end and an end of a conveyor body, and an endless belt is laid between these rollers.
A drive mechanism provided with a drive roller for driving and rotating the belt in contact with the return side of the belt is provided, and on one side and the other side near both ends of the conveyor body,
In a belt conveyor provided with legs for supporting the same conveyor body at a predetermined height, an intermediate portion of at least one of the legs provided on one side and the other side of the conveyor body can be attached and detached. Parts, and an insertion roller is provided at each of the upper and lower mating portions of the mating portion. The outer peripheral surfaces of the upper and lower insertion rollers are freely rotatable with each other, and the belt is moved from the conveyor body. When removing the belt, the engagement between the belt and the drive mechanism is removed, and the return side of the belt loosened between the rollers of the conveyor body is moved between the insertion rollers of the mating portion provided on the legs of the conveyor body. The belt conveyor is configured so that the belt is detached from one side or the other side of the belt conveyor body by being inserted from the inside and pulled out to the outside. 2. A connecting member for connecting a member on an upper mating portion side of a mating portion provided at an intermediate portion of a leg supporting the conveyor body with a member on a lower mating portion side of the leg. The belt conveyor according to claim 1, which is detachably connected.