JPH11278627A - belt conveyor - Google Patents

Abstract

(57) [Problem] To provide a belt conveyor capable of extending the life of a conveyor belt. SOLUTION: Both ends of a belt-shaped transport belt 1 are connected in an inverted manner, and the transport belt 1 is inverted between an upstream roller pair 21 and a downstream roller pair 22 on a return surface 1b side. . Therefore, the surface of the conveyor belt 1 on the side of the conveyor surface 1a alternates between the front and back in each cycle, so that only one surface does not wear intensively. As a result, the life of the conveyor belt 1 is reduced by one. The length can be extended about twice as compared with a conventional belt conveyor that conveys an object only by the surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor for conveying an object to be conveyed by an endless belt.

[0002]

2. Description of the Related Art A conventional belt conveyor will be described with reference to FIG.

[0003] The belt conveyor includes an endless belt-shaped transport belt 1 which connects both ends to form a closed loop, a driving pulley 2 inside the closed loop, a driven pulley 3, and a tension pulley 4.

[0004] The driving pulley 2 and the driven pulley 3 are provided at a distance. The tension pulley 4 can be moved up and down.
6, the conveyor belt 1 is pulled downward to apply tension. The transport belt 1 can be stretched between the driving pulley 2 and the driven pulley 3 by the tension pulley 4. A scraper type belt cleaner 7 for cleaning the surface of the transport belt 1 is provided near the driving pulley 2.

The lower surfaces of the transport surface 1a and the return surface 1b of the transport belt 1 are supported by a plurality of support rollers, respectively. On the transport surface 1a side, as shown in FIG. Belt supporting roller 8 extending in a predetermined direction (width direction of the conveyor belt 1), and belt supporting rollers 9 extending obliquely on both sides of the belt supporting roller 8,
As shown in FIG. 8, both sides of the conveyor belt 1 are inclined upward by the support rollers 9 and 10 so that an object to be conveyed (for example, bulk material such as coal) is not spilled. Has become. The lower return surface 1b facing the transport surface 1a is supported by a single horizontal belt support roller 11, as shown in FIG.

[0006]

In the above-mentioned conventional belt conveyor, an object to be conveyed is placed on the surface of the conveyor belt 1 on the side of the conveyor surface 1a, and the object is conveyed to the driven pulley 3 on the right end in FIG. From the drive pulley 2 on the left end side. On the other hand, the surface of the transfer surface 1a of the transfer belt 1 is significantly worn by the transfer of the object to be transferred, and the amount of wear on this surface is much larger than the amount of wear on the back surface. Wear determines the life of the conveyor belt 1, and the life of the conveyor belt 1 is relatively short.

Here, it is conceivable to extend the life of the transport belt 1 by using the back surface with a small amount of wear as the transport surface. In this case, the work of turning the transport belt 1 upside down manually is performed. There is a problem that such work requires a great deal of cost and time.

[0008] The present invention has been made in view of such circumstances and background, and has as its object to provide a belt conveyor that can extend the life of a conveyor belt.

[0009]

According to a first aspect of the present invention, a driving pulley and a driven pulley are provided inside an endless belt-shaped transport belt that forms a closed loop by connecting both ends thereof. Further, a tension pulley for stretching the transport belt between both pulleys is provided, and a belt conveyor that transports an object to be transported on the transport surface of the transport belt is connected in a state where both ends of the transport belt are inverted. In addition, a reversing positioning means for restricting a position where the transport belt is reversed is provided on a return surface facing the transport surface.

[0010] In order to achieve the above object, a second aspect is provided.
The described invention is configured such that the reversing positioning means includes a pair of upstream rollers for clamping the front and back surfaces of the transport belt before reversing, and a pair of downstream rollers for clamping the front and back surfaces of the transport belt after reversing. It is characterized by having.

[0011] In order to achieve the above object, a third aspect of the present invention is provided.
According to the invention described in claim 1, in the invention described in claim 1, a water-washing type belt cleaner is provided at an arbitrary position on the surface of the transport belt after the transported object is dispensed.

According to the first and second aspects of the present invention, both ends of the belt-shaped transport belt are connected in an inverted manner, and the transport belt is inverted between the return-side upstream roller pair and the downstream roller pair. It has become. Therefore, the transport surface for transporting the object to be transported is alternately turned upside down every cycle, so that only one surface does not wear intensively. As a result, the life of the transport belt is reduced by only one surface. The length can be extended about twice as compared with a conventional belt conveyor that conveys an object.

According to the third aspect of the present invention, the water-washing belt cleaner is disposed at an appropriate position on the surface of the closed-loop conveyor belt after the conveyed object is dispensed. It can be effectively prevented.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an overall configuration diagram of a belt conveyor according to a first embodiment of the present invention, FIG. 2 is a view as viewed from A in FIG.
FIG. 2 is a view as viewed from B in FIG. The same parts as those in the conventional example shown in FIGS. 7 to 9 are denoted by the same reference numerals.

The belt conveyer is constructed by looping an endless transport belt 1 around a driving pulley 2, a driven pulley 3, and a tension pulley 4, as in the conventional example described above. Here, the transport belt 1 of the present invention is connected with its both ends inverted, as generally called a Mobius strip. On the return surface 1b side, an upstream roller pair 21 composed of a pair of rollers for inverting the transport belt 1 therebetween, in other words, a roller for regulating a position where the transport belt 1 is inverted, and a downstream roller Means for reversing positioning consisting of the pair 22 is provided.

When the transport belt 1 passes through the upstream roller pair 21 on the return surface 1b, as shown in FIGS.
The sheet is turned while being bent in the width direction, and is nipped by the downstream roller pair 22 when the sheet is completely turned. Thereafter, the sheet is conveyed to the driven pulley 3 side with its front and back surfaces reversed.

The scraper type belt cleaner 7 is provided on the outer peripheral portion of the drive pulley 2 immediately after the conveyed object is discharged. In the present embodiment, the scraper type belt cleaner 7 is further provided near the downstream side. In addition, a water-wash type belt cleaner 23 is provided. Since the transport belt 1 is twisted during the reversing process, dust generation is more likely to occur as compared with the conventional belt conveyor. The problem of dust generation can be effectively prevented.

At the upstream end of the transfer surface 1a, that is, in the vicinity of the driven pulley 3, a transferred object supply device 31 is provided.
The conveyed object is supplied from another location to the belt conveyor at right angles to the conveyor belt by the supply conveyor 32 of the conveyed object supply device 31, and is further dropped and supplied onto the conveyor belt 1. A falling-off prevention frame 33 having substantially the same width as the conveyor belt 1 is provided at the lower end, and prevents the transferred object from falling off to the side of the conveyor belt 1.

In such a configuration, when the power of the motor of the driving pulley 2 is turned on and the driving pulley 2 rotates, the transport belt 1 is moved to the left side in FIG. 1 on its transport surface 1a, while it is moved on the return surface 1b. It is moved to the right side of FIG.

The conveyed object dropped and supplied from the conveyed object supply device 31 onto the conveyer belt 1 is conveyed to the downstream side on the convey surface 1a, separated from the conveyer belt 1 which turns at the drive pulley 2, and then moved to the next position. It is paid out to the conveyor belt 1 in the process or is housed in the housing means.

As described above, the transport belt 1 has an upstream roller pair 21 and a downstream roller pair 2 on the return surface 1b.
2, the surface of the transport surface 1 a of the transport belt 1 (the upper surface for receiving the transported object) that has been turned by the driven pulley 3 and has reached the lower portion of the transported object supply device 31 again is the same as the previous transported object. The surface is the opposite of the one when transported. That is, the transport belt 1 is turned upside down for each rotation cycle.

In this way, since the front and back surfaces of the conveyor belt 1 can be used evenly, the amount of wear on each surface can be reduced by half as compared with the conventional one, and as a result, the life can be reduced by about 2 times. Can be doubled.

FIG. 4 is a configuration diagram of a conveyor belt reversing section of a belt conveyor according to a second embodiment of the present invention, and FIG.
6 is a view as viewed from C, and FIG. 6 is a view as viewed from D in FIG.

In the second embodiment, similarly to the first embodiment, the transport belt 1 is inverted between the upstream roller pair 21 and the downstream roller pair 22.
A conveyance belt regulating roller pair 24 is provided between the roller pair 22 and the downstream roller pair 22, and the conveyance belt 1 is sandwiched between the pair of rollers 24, thereby serving as a reversing positioning unit that makes the reversal more reliable. Others are the same as the first embodiment.

According to the present embodiment, both ends of the belt-shaped transport belt 1 are connected in an inverted manner, and the transport belt 1 is located between the upstream roller pair 21 and the downstream roller pair 22 on the return surface 1b side. It is designed to be inverted. Therefore, the transport surface 1
The front and back surfaces of the surface a are alternately arranged every period, so that only one surface does not wear intensively. As a result, the life of the conveyor belt 1 is reduced, and the object to be conveyed is conveyed only on one surface. It can be extended about twice as compared with the conventional belt conveyor.

[0027]

According to the first and second aspects of the present invention, since the front and back surfaces of the conveyor belt are automatically reversed every rotation period, the front and back surfaces can be evenly worn. In addition, the life of the conveyor belt can be extended without performing the reversing operation manually.

According to the third aspect of the present invention, since the water-washing type belt cleaner is disposed at an appropriate position on the conveyed surface of the closed-loop conveyer belt after being discharged, dust generated from the conveyer belt at the time of reversal is reduced. It can be effectively prevented.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a belt conveyor according to a first embodiment of the present invention.

FIG. 2 is a view as viewed from A in FIG. 1;

FIG. 3 is a view as viewed from B in FIG. 1;

FIG. 4 is a configuration diagram of a conveyor belt reversing unit of a belt conveyor according to a second embodiment of the present invention.

FIG. 5 is a view as viewed from C in FIG. 4;

FIG. 6 is a view as viewed in the direction D of FIG. 4;

FIG. 7 is an overall configuration diagram of a belt conveyor according to a conventional example.

FIG. 8 is a sectional view of a transfer surface.

FIG. 9 is a sectional view of a return surface.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveying belt 1a Conveying surface 1b Return surface 2 Drive pulley 3 Follower pulley 4 Tension pulley 21 Upstream roller pair 22 Downstream roller pair 23 Rinse belt cleaner

Claims (3)

[Claims] 1. A drive pulley and a driven pulley, and a tension pulley for stretching the transport belt between the two pulleys are provided inside an endless belt-like transport belt that forms a closed loop by connecting both ends, In a belt conveyor that conveys an object to be conveyed on the conveyance surface of the conveyance belt, while connecting the conveyance belt in a state where both ends are inverted, a return surface facing the conveyance surface is provided with a position where the conveyance belt is inverted. A belt conveyor provided with a reversing positioning means for regulating. 2. The reversing positioning means comprises a pair of upstream rollers for clamping the front and back surfaces of the transport belt before reversing, and a pair of downstream rollers for clamping the front and back surfaces of the transport belt after reversing. The belt conveyor according to claim 1, wherein: 3. The belt conveyor according to claim 1, wherein a water-washing belt cleaner is provided at an arbitrary position on the surface of the conveyor belt after the conveyed object is dispensed.