JPH09150929A - Belt conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt conveyor device which can transport a great quantity of material at the high speed, is less in noise, vibration and environmental pollution, is low in running cost and the cost of equipment, prevent carried minerals from falling, and is less in belt abrasion. SOLUTION: This invention is concerned with the air floating type belt conveyor 100 whose belt 1 is floated by compressed air. The inner surfaces at the lower parts of paired upper and lower horizontal cylindrical pipes are made movably supporting troughs 10 and 12 for a carrier side belt 1a and a return side belt 1b, air injection ports and air ducts 22 and 32 for compressed air are disposed at the lowermost parts of the movably supporting troughs 10 and 12 in cross sections, and a belt turn-over device 50 is provided for the return side of the belt 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor device, and more particularly, to a belt conveyor device which supports a carrier side belt and a return side belt by a pair of upper and lower cylindrical tubes and which can be conveyed while being floated by compressed air. It is intended that a belt conveyor device capable of transporting a large amount of packages at high speed over a long distance can be provided at a low facility cost.

[0002]

2. Description of the Related Art In a conventional belt conveyor device, a belt for loading and transporting a conveyed object rolls on a central support roller and a pair of left and right side rollers arranged at a plurality of substantially equal intervals in the belt running direction. While being moved, the transported object is transferred. Similarly, the return-side belt also rolls on the return rollers arranged at a plurality of positions.

[0003]

However, in such a conventional belt conveyor device, a large amount of power is required to convey a large amount of conveyed articles over a long distance, and various rollers are used. Due to the restriction of rotation resistance and rotation speed, there were the following problems. It was difficult to increase the speed due to the restriction of the belt conveyance speed. The generation of noise associated with the rotation of the roller deteriorates the working environment. It took a lot of effort to maintain many rollers. There was vibration of the equipment due to the rotation of the roller. The belt has a short life due to wear caused by rolling and sliding.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and to supply a belt conveyor device which is inexpensive in equipment cost, in the first invention, an endless belt and a carrier side of the belt are provided. And a belt bearing trough having a plurality of compressed air injection holes for floating the belt in the belt running direction on both the return side and the return side, wherein the belt bearing trough is a pair of upper and lower troughs. The carrier belt is formed of a horizontal cylindrical pipe made of a resin pipe or a steel pipe, the carrier-side belt is supported on the lower inner surface of the upper cylindrical pipe of the pair of cylindrical pipes, and the return-side belt is formed of the lower cylindrical pipe of the pair of cylindrical pipes. The lower part of the injection hole, which is supported on the lower inner surface of the cylindrical pipe and is formed at the lowermost part of each of the cylindrical pipes, communicates with a compressed air source to supply compressed air to the injection hole. A compressed air pipe extending along the belt running direction is connected, an exhaust port for discharging the compressed air after the belt floating action is provided in the cylindrical pipe, and a return after reversing at the edge of the belt conveyor device A belt reversing device for reversing the upper and lower surfaces of the side belt before and after the passage of the side belt into the lower cylindrical tube is provided before and after the lower cylindrical tube. Further, in the second invention, the belt reversing device in the first invention has a pair of upper and lower horizontal scissor rollers at both ends, and a pair of left and right vertical scissor rollers provided at an intermediate portion of the both horizontal scissor rollers or an inclined support. It is formed by an inclined roller that protrudes by sequentially changing the bulging angle at a plurality of positions spaced apart by a certain distance in the axial direction and abuts and rolls on the back surface of the belt. Further, according to a third aspect of the present invention, in the first or second aspect of the invention, between the belt reversing device and the lower cylindrical tube, a pair of upper and lower parts that come into contact with the upper and lower surfaces of the central portion of the cross section of the return side belt and roll. And a pair of upper and lower scissor rollers that roll while sandwiching both ends of the return belt diagonally, and provided with a trough forming device that forms a belt cross section into a bowl shape.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the belt bearing trough is formed of a horizontal cylindrical tube made of a pair of upper and lower resin tubes or steel tubes, and the carrier belt is an upper cylinder of the pair of cylindrical tubes. The return-side belt is supported on the inner surface of the lower portion of the pipe, is supported on the inner surface of the lower portion of the lower cylindrical pipe of the pair of cylindrical pipes, and is attached to the lower portion of the injection hole formed at the lowest portion of each of the cylindrical pipes. Is connected to a compressed air pipe communicating with a compressed air source and supplying compressed air to the injection hole and extending along the belt running direction, and the cylindrical pipe is provided with an exhaust port for discharging the compressed air after the belt floating action. A belt reversing device for reversing the upper and lower surfaces before and after introducing the return-side belt after reversing at the edge of the belt conveyor device into the lower cylindrical pipe and after passing through the lower cylindrical pipe is provided in front of and behind the lower cylindrical pipe. As configuration, the belt running moves while air levitation. Then, the belt on the return side is reversed by the belt reversing device and introduced into the lower cylindrical tube, so that U on the carrier side in the upper cylindrical tube.
Since the belt whose cross section is bent like a letter passes through the lower cylindrical tube while being bent in a U shape on the return side as well,
As compared with a belt that does not turn over on the return side, the abrasion phenomenon due to the sliding operation on the inner surface of the cylindrical tube at the end of the belt is reduced, and the life of the belt is extended. Further, in the second invention, the belt reversing device is fixed in the axial direction by a pair of upper and lower horizontal scissor rollers at both ends and a pair of left and right vertical scissor rollers provided at an intermediate portion of the both horizontal scissor rollers or an inclined support. The belt can be easily and easily reversed because it is formed of a tilt roller that protrudes by sequentially changing the bulging angle at a plurality of positions spaced apart and abuts and rolls on the back surface of the belt. Further, in the third invention, the trough forming device is arranged between the belt reversing device and the lower cylindrical tube, respectively, and U is provided along the inner surface of the cylindrical tube for guiding the belt after the reversal in advance.
Since it is formed in a V-shaped cross section, it can be smoothly introduced into the cylindrical tube. Further, since the belt after exiting the lower cylindrical tube is guided to the belt reversing device while being held in the U-shaped cross section by the trough forming device in advance, the belt near the outlet of the lower cylindrical tube is flattened (U
(The phenomenon that the character-shaped cross section becomes flat due to the reversing operation of the belt reversing device) is prevented, and unnecessary wear phenomenon is prevented.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 8 relate to an embodiment of the present invention, FIG. 1 is an overall side view of a belt conveyor device, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a schematic side view of a belt reversing device. 4, FIG. 4 is a schematic perspective view of the belt reversing device, FIG. 5 is a schematic perspective view of a belt reversing device showing another embodiment, FIG. 6 is a cross-sectional view of the main part of the inclined roller portion of the belt reversing device of FIG.
Is an overall side view of a belt conveyor device showing another embodiment,
FIG. 8 is a vertical sectional view of the trough forming apparatus.

As shown in FIGS. 1 and 2, the belt conveyor device 100 is configured such that an endless smooth belt 1 is wound between a head pulley 2 and a tail pulley 3 and can move endlessly. In an intermediate portion between the pulley 2 and the tail pulley 3, as shown in FIG. 2, a pair of upper and lower belt support troughs (a carrier side belt support trough 10 and a return side belt support trough 12) are made of a resin pipe such as vinyl chloride or a steel pipe. Formed by a horizontal cylindrical tube,
A carrier-side belt support trough (hereinafter, referred to as a carrier-side trough) 10 that supports the carrier-side belt 1a corresponds to the lower inner surface of the upper cylindrical tube P, and a return-side belt support trough (hereinafter, a return-side trough) that supports the return-side belt 1b. 12) corresponds to the lower inner surface of the lower cylindrical tube Q.

The upper cylindrical tube P and the lower cylindrical tube Q are connected by an air duct 22 disposed along the belt running direction, and are formed at the lowermost portion of the upper cylindrical tube P at substantially equal intervals in the belt running direction. Compressed air supplied via the air supply pipe 20 and the air duct 22 through the provided inlet 22a enters the upper cylindrical pipe P and floats the carrier-side belt 1a. The air after the floating action is discharged from the exhaust pipe 24. In the same manner as described above, the lower cylindrical pipe Q is also provided with an air duct 32 below along the belt running direction, and the air supply pipe 30, the air duct 30, and the inlet 32a.
Compressed air is supplied into the lower cylindrical tube Q through the lower side to move the return side belt 1b while floating. The air after the levitation action is exhausted by an exhaust pipe 34 provided on the oblique side surface of the lower cylindrical pipe Q.
Emitted from.

At one end of the upper cylindrical pipe P on the side of the tail pulley, an inlet 4 for the goods M is provided, and end covers 7 and 8 for covering the tail pulley 3 and the head pulley 2 are provided, respectively. A chute 9 for discharging the transported material M is connected to a lower portion. Also,
As shown in FIG. 2, a plurality of column bases 40 are fixed to the lower cylindrical tube Q in the belt running direction,
, An inspection corridor 44, a stand 46, a handrail 48, and the like are provided.

Belt reversing devices 50 are arranged between the head pulley 2 and the lower cylindrical tube Q and between the tail pulley 3 and the lower cylindrical tube Q. The belt reversing device 50 is
As shown in FIGS. 3 to 4, a pair of upper and lower horizontal scissor rollers 52, 52 at both ends and a pair of left and right vertical scissor rollers 5 at an intermediate portion.
4 and the upper and lower sides of the belt 1 are turned upside down when the belt 1 passes from the left side to the right side of the drawing. 5 to 6 show a belt reversing device 50A showing another embodiment, in which the horizontal scissor rollers 52, 52 at both ends are
Similar to the belt reversing device 50 of FIG. 3, but with a slanted rod-shaped support (generally a pipe is used) 56 in the middle part, which is spaced apart at regular intervals in the axial direction, and the projection angle is sequentially changed. The inclined roller which is protruded by this is mounted so as to be rotatable, and the back surface of the belt 1 passing between the horizontal scissor rollers 52 at both ends is pressed to be reversed.

On the other hand, the belt conveyor device 10 shown in FIG.
0A is another embodiment of the present invention (corresponding to the third invention)
The difference from the belt conveyor device 100 of FIGS. 1 and 2 is that a trough forming device 60 is provided between the belt reversing device 50 and the lower cylindrical tube Q. As shown in FIG. 8, the trough forming device 60 uses the flat belt 1 (actually, the return-side belt 1b),
The return-side belt 1b after being curved into a U-shaped section and smoothly introduced into the lower cylindrical tube Q, or after passing through the lower cylindrical tube Q
However, the return side belt 1 near the outlet of the lower cylindrical tube Q is affected by the reversing action of the belt reversing device 50.
It is installed for the purpose of holding the belt cross section in a U-shape in order to prevent the belt end from being rubbed strongly against the inner wall of the lower cylindrical tube and being worn due to b being flat. Specifically, the pair of upper and lower pressing rollers 6 in the central portion of the belt cross section
1 and 62, and a pair of upper and lower scissor rollers 63, 63 and 64, 64 that sandwich the belt end portion obliquely.

The operation of the belt conveyor device 100 shown in FIGS. 1 to 6 and the belt conveyor device 100A shown in FIGS. 7 to 8 configured as described above will be described. The transported article M is supplied from the inlet 4 on the tail pulley side onto the carrier side belt 1a on the carrier side trough 10, and is transported by the belt driving device (not shown) and the carrier side belt 1a driven by the head pulley 2, It is discharged from the chute 9 on the side. During operation of the belt conveyor device 100 or the belt conveyor device 100A, the carrier side belt 1a and the return side belt 1b.
Respectively move while slightly floating due to the boundary layer of compressed air formed between the carrier side trough 10 and the return side trough 12, and the abrasion with the troughs 10 and 12 is significantly larger than that of the conventional model. Power consumption is reduced. FIG. 2 shows cross-sectional states on the head pulley side and the tail pulley side, respectively.

On the other hand, the belt 1 reversed by the head pulley 2, that is, the return side belt 1b enters the belt reversing device, and the upper surface and the lower surface are turned upside down as described above. It moves while floating slightly due to the floating effect of the compressed air introduced and injected into the. Then, after passing through the lower cylindrical tube 50, the belt is turned upside down again by the belt reversing device and returned to the original state, the tail pulley 3 is reversed, and the return side belt 1b becomes the carrier side belt 1a and reaches the input port 4.

In the belt conveyor device 100A, in the above operation, after the belt is reversed by the belt reversing device 50 after the head pulley 2, the belt 1b is passed through the trough forming device 60 and before entering the lower cylindrical pipe Q in advance. A U-shaped cross section is formed to facilitate the introduction into the lower cylindrical tube Q, and as described above, the belt cross section when exiting the lower cylindrical tube Q is U.
It is held in a character shape to prevent harmful friction between the inner surface of the lower cylindrical tube Q and the belt end.

In the belt conveyor device 100 and the belt conveyor device 100A, the reason why the return side belt 1b entering the lower cylindrical tube Q is reversed by the belt reversing device 50 is that the carrier side belt 1a has an U-shaped cross section in the upper cylindrical tube P. Since the transported goods M are loaded while being transported and moved over a long distance, when the return-side belt 1b passes through the lower cylindrical tube Q as it is, the return-side belt 1b is not flat but rather a reverse U. This is to prevent the belt end portion from sliding on the inner side wall of the lower cylindrical tube Q and promoting friction and wear because the belt tends to have a V-shaped cross section (a V shape).

[0016]

In the belt conveyor device of the present invention described above, a large amount of high-speed transfer can be performed over a long distance, and because of the closed structure, there is no generation of noise or pollution of the work environment due to falling mine, and the conventional problems are solved. As a result, the maintenance is facilitated and the maintainability is improved, and the running cost and initial cost can be significantly reduced by reducing the power consumption. In particular, in the present invention, the lower inner surface is used as a support trough for the carrier-side belt and the return-side belt by skillfully utilizing a horizontal cylindrical tube, and a belt reversing device and a trough forming device are provided on the return side, thereby reducing belt wear. Is significantly reduced, the maintainability is improved, and the operation can be performed safely and stably for a long period of time. Further, since the belt is passed through the cylindrical pipe, there is no drop of the transported material, so the working environment is good and the transported material is not lost, which is advantageous.

[Brief description of the drawings]

FIG. 1 is an overall side view of a belt conveyor device according to an embodiment of the present invention.

FIG. 2 is a transverse sectional view taken along line AA of FIG.

FIG. 3 is a schematic side view of a belt reversing device according to an embodiment of the present invention.

FIG. 4 is a schematic perspective view of a belt reversing device according to an embodiment of the present invention.

FIG. 5 is a schematic perspective view of a belt reversing device according to another embodiment of the present invention.

6 is a cross-sectional view of a main part of an inclined roller portion of the belt reversing device of FIG.

FIG. 7 is an overall side view of a belt conveyor device according to another embodiment of the present invention.

FIG. 8 is a vertical sectional view of a trough forming apparatus according to an embodiment of the present invention.

[Explanation of symbols]

1 Belt 1a Carrier Side Belt 1b Return Side Belt 2 Head Pulley 3 Tail Pulley 4 Insertion Port 7 End Cover 8 End Cover 9 Chute 10 Carrier Side Belt Bearing Trough (Carrier Side Trough) 12 Return Side Belt Bearing Trough (Return Side Trough) 20 Supply Trachea 22 Air duct 22a Inlet 24 Exhaust pipe 30 Intake pipe 32 Air duct 32a Inlet 34 Exhaust pipe 40 Pillar 42 Support 44 Inspection corridor 46 Stand 48 Handrail 50 Belt reversing device 52 Horizontal scissor roller 54 Vertical scissor roller 56 Support 58 Inclination Roller 60 Trough forming device 61, 62 Pressing roller 63, 64 Scissor roller 100 Belt conveyor device 100A Belt conveyor device M Transported product P Upper cylindrical pipe Q Lower cylindrical pipe

Claims (3)

[Claims] 1. An air levitation type belt having an endless belt and a belt support trough provided with a plurality of compressed air injection holes in a belt running direction on both a carrier side and a return side of the belt in order to float the belt. In a conveyor device, the belt support trough is formed of a horizontal cylindrical pipe made of a pair of upper and lower resin pipes or steel pipes, and a carrier-side belt is formed on a lower inner surface of an upper cylindrical pipe of the pair of cylindrical pipes. The return side belt is supported on an inner surface of a lower portion of a lower cylindrical tube of the pair of cylindrical tubes, and a lower portion of each of the injection holes formed at the lowermost portion of the cylindrical tube communicates with a pressure source. A compressed air pipe extending along the running direction of the belt for supplying compressed air to the injection hole is connected, and an exhaust port for discharging the compressed air after the belt floating action is provided in the cylindrical pipe. In both cases, a belt reversing device for reversing the upper and lower surfaces before and after introducing the return side belt after reversing at the edge of the belt conveyor device into the lower cylindrical pipe and after passing through the lower cylindrical pipe is provided at the front and rear of the lower cylindrical pipe. A characteristic belt conveyor device. 2. The belt reversing device is axially spaced from the pair of upper and lower horizontal scissor rollers at both ends and a pair of left and right vertical scissor rollers or an inclined support provided in the middle of the horizontal scissor rollers. 2. The belt conveyor device according to claim 1, wherein the belt conveyor device is formed by a plurality of inclined rollers that sequentially change the bulging angle and protrude so as to abut and roll on the back surface of the belt. 3. Between the belt reversing device and the lower cylindrical tube,
Each of them is composed of a pair of upper and lower pressing rollers that abut on the upper and lower surfaces of the central portion of the cross section of the return side belt, and a pair of upper and lower scissor rollers that roll by sandwiching the belt both ends of the return belt at an angle. The belt conveyor device according to claim 1 or 2, further comprising a trough forming device for forming a belt cross section into a bowl shape.