JPH10329920A - Air flotation type belt conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized and lightweight belt conveyor device and improve space efficiency by forming the moving space of a suspended belt separated from the outside between the lower face of a footpath cover member and the upper face of a conveying trough member, and forming a footpath on its upper face. SOLUTION: A flat plate-like footpath cover plate 30 serving as a footpath cover member is fixed in the suspended state between the upper faces of the right and left side plates 20A of a trough frame 20. A footpath is formed on the upper face of a conveyor 10, a conveying space 14 separated from the outside is formed on the upper side of a conveying trough 21, and the carrier belt (suspended belt) 15 of a conveyance path loaded with a conveyance object is moved in the conveying space 14. The conveying space 14 is communicated with a loading space formed by a feed chute on the upstream side, and it is communicated with a discharging space formed by a discharge chute on the downstream side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air levitation type belt conveyor for loading ore ore, coal and the like on a carrying belt which is moved and driven while being floated by air.

[0002]

2. Description of the Related Art Recently, an air-floating belt conveyor device that floats and holds a load belt by an air layer has attracted attention as a transport mechanism for transporting bulk materials such as ore and coal.

FIG. 5 is a schematic sectional perspective view showing an example of an air-floating belt conveyor device. In the illustrated configuration, air is supplied to both the upper moving path (conveying path) that conveys the conveyed material of the carrier belt 1 as the load-carrying belt that is driven to rotate and the lower moving path (return path) that returns to the conveyed article loading position. This is an example in which a floating structure is applied.

[0004] Trough members 2 and 2 'are respectively provided below the transport path and the return path of the carrier belt 1 along the moving path, and the carrier belt 1 is provided with the trough members 2 and 2'.
2 'defines the cross-sectional shape (valley shape on the transport side and mountain shape on the return side).

[0005] An air duct 3.3 'is provided along the trough member 2' at the center lower surface side of the trough member 2 'and is supplied to the air duct 3.3' by a blower (not shown). The air that has flowed from the orifices 2A, 2A 'formed in the trough members 2, 2'
And an air layer is formed between the trough members 2 and 2 ′ and the carrier belt 1 to float the carrier belt 1.

[0006] Thus, the carrier belt can be moved with very low resistance and without generating noise or vibration, and the work can be performed by the noise or vibration generated by the rotation of the roller like a roller belt conveyor that supports the carrier belt with the carrier roller. It has the advantage of not affecting the environment or the surrounding environment.

In the illustrated construction, the trough members 2 and 2 'are fixed to the upper and lower edges of side plate members 4 located on the left and right sides, respectively, and supported vertically at predetermined intervals.
A trough frame having a closed cross section is formed by 2 'and the side plate member 4. The upper surface of the upper transport trough member 2 is covered by a cover member 5. Thereby, the carrier belt 1 on the transport path moves in the transport space surrounded by the transport trough member 2 and the cover member 5, and the carrier belt 1 on the return path includes the transport trough member 2, the return path trough member 2 'and the side plate member 4 It moves in the closed cross-section space (in the trough frame) formed by the above, so that the dust of the transported object can be prevented from scattering outside and noise.

[0008]

However, in the configuration in which the carrier belt moves in the closed space as described above, the transport state cannot be visually confirmed. For this reason, as shown in the cross-sectional view of FIG. 6, the beam member 6 is disposed at the lower edge of the side plate member 4 (under the trough frame) so as to protrude left and right, and the floor member 7 is Is formed so that a worker located on the sidewalk can remove the cover member 5 and check the state of conveyance by the carrier belt 1.

However, in the configuration in which the sidewalk protrudes from the side of the trough frame as described above, the weight of the entire conveyor increases, which leads to an increase in cost. In addition, when a plurality of conveyors are arranged side by side, the interval is reduced. There is a problem that the space efficiency is deteriorated because it is regulated by the sidewalk.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to provide a small and light-weight structure with a sidewalk for confirming a conveyance state, thereby enabling cost reduction and improving space efficiency. It is an object of the present invention to provide an air-floating belt conveyor device capable of performing the above-mentioned operations.

[0011]

According to the present invention, there is provided an air-floating belt conveyor device according to the present invention, wherein an endless loading belt driven in a loop carries a conveyed object on its upper moving path and conveys it. A moving conveyor apparatus, wherein a conveyed trough member formed in a concave shape and opened upward along a moving direction of the load carrying belt is provided below a moving path of the load carrying belt that carries and moves the conveyed article. In addition, an air supply path is provided below the transport trough member, and air supplied from the air supply path to the upper surface side of the transport trough member through an orifice formed in the transport trough member is provided. In the one configured to float the load belt from the surface of the transport trough member, a substantially flat sidewalk cover member having an inspection hole above the transport trough member is disposed so as to cover the transport belt, Characterized in that it forms a sidewalk on its upper surface to form a moving space of said simply belt which is isolated from the outside between the road cover member and a lower surface and an upper surface of the conveyor trough member.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a conceptual configuration diagram of a vertical cross section of the entire air-floating belt conveyor device according to the present invention, FIG. 2 is an enlarged cross-sectional view corresponding to the AA cross section, and FIG.
Is a partial plan view, and FIG. 4 is a partial side view.

The illustrated air-floating belt conveyor device 10
A drive pulley 11 and a driven pulley 12 are disposed at front and rear ends of a trough frame 20 (hereinafter simply referred to as a conveyor), and a carrier belt 15 as a load belt is looped between the pulleys 11 and 12. It is configured. The drive pulley 11 is driven to rotate by a motor (not shown), and the rotation of the drive pulley 11 drives the carrier belt 15 to circulate along a later-described transport trough 21 and a return trough 22 of the trough frame 20.

In the trough frame 20, the side edge of the transport trough 21 is fixed to the upper edge of the side plate 20A, and the side edge of the return trough 22 is fixed to the lower edge of the side plate 20A.
A predetermined distance below the transport trough 21 and a return trough 22
Are formed in a box shape with a closed cross section that is continuous in the longitudinal direction of the conveyor 10 (conveyance direction of the conveyed object).

The transfer trough 21 is formed by bending a steel plate having a predetermined thickness at a predetermined bending radius at a predetermined angle, forming a circular arc having a bottom at a predetermined radius, and having both edges open upward at a predetermined angle. Both edges are fixed to the upper edge of the side plate 20A.

The return trough 22 is formed by bending a steel plate having a predetermined thickness to be shallower than the transport trough 21 with its open side facing downward (convex) and fixed to the lower edge of the side plate 20A at both edges. I have.

At the center in the width direction on the lower surface side of the transport trough 21 and the return trough 22, duct members 23A and 24A having a substantially U-shaped cross section as an air passage forming member are fixed, and the air ducts 23 and 24 are provided. A blower 25 that supplies air to these air ducts 23 and 24 is formed.
Is connected.

The positions corresponding to the air ducts 23 and 24 of the transport trough 21 and the return trough 22 (that is, the transport trough 21).
And the center of the return trough 22), the air ducts 23, 2
Orifices 21A and 22A each having a predetermined diameter and formed so as to communicate between the inside and outside of the base 4 are arranged in a line at predetermined intervals in the direction in which the troughs 21 and 22 extend.

Between the upper surfaces of the left and right side plates 20A of the trough frame 20, a flat sidewalk cover plate 30 as a sidewalk cover member is fixed in a bridge state, thereby forming a sidewalk on the upper surface of the conveyor 10. A transport space 14 is formed above the transport trough 21 and is separated from the outside.
Numeral 5 moves in the transport space 14.

The transport space 14 has a supply chute 1 on the upstream side.
6 communicates with the loading space 17 formed by
The downstream side communicates with a discharge space 19 formed by the discharge chute 18.

A suction device 40 having a bag filter 42 interposed in the suction path of the blower 41 is connected to the discharge space 19, and the suction device 40 is connected to the discharge space 1.
Negative pressure is sucked into the inside 9 to prevent the inside dust from escaping to the outside. The dust collected by the bag filter 42 is returned to the discharge space 19 via the rotary feeder 43.

As shown in FIG. 3, a plurality of inspection holes 30A are formed in the sidewalk cover plate 30 at predetermined intervals in the longitudinal direction of the conveyor 10 (longitudinal direction of the trough frame 20). The cover 31 is openably and closably covered.

On the side surfaces of the upper edges of the left and right side plates 20A of the trough frame 20, a plurality of support bars 32 are fixed at their lower ends, and a plurality of support bars are arranged at predetermined intervals in the longitudinal direction of the conveyor 10 (longitudinal direction of the trough frame 20). The handrails 30 are moved by the support bars 32 to the sidewalk cover plates 30.
Are provided at predetermined heights on the left and right sides.

The carrier belt 15 is an endless belt having a predetermined width. The carrier belt 15 is wound between the drive pulley 11 and the driven pulley 12 with the upper sides of the transport trough 21 and the return trough 22 as moving paths. In the movement path (transport path), the shape is upwardly open following the shape of the transport trough 21, and on the upper travel path (return path) of the return path trough 22, the shape is open downward according to the shape of the return path trough 22. Becomes

The conveyor 10 constructed as described above is
The carrier belt 15 is driven to rotate by the rotation of the drive pulley 11, moves from the driven pulley 12 to the drive pulley 11 along the transport trough 21 on the transport path, and moves from the drive pulley 12 to the return trough 2 on the return path.
2 to the driven pulley 12. At the same time, air is supplied to the air ducts 23 and 24 by the blower 25, and the air supplied to the air ducts 23 and 24 is
The orifices 21A and 22A squirt out above the troughs 21 and 22, and the upper surfaces of the troughs 21 and 22 and the carrier belt 1
An air layer is formed between the carrier belt 15 and the lower surface of the carrier belt 15.
To escape to the outside from the side edge. As a result, the carrier belt 15 floats from the troughs 21 and 22 and comes into non-contact, so that there is no friction and the carrier belt 15 moves smoothly without generating noise or vibration. Carrier belt 15
The air that has contributed to the floating of the air flows through the transfer space 14 and the trough frame 20 to reach the discharge space 19, where it is sucked.
It is what is sucked by.

The conveyed material is stacked on the carrier belt 15 near the drive pulley 11 from the supply chute 16 and is conveyed to the discharge chute 18 by the movement of the carrier belt 15 along the conveyance trough 21.

Here, when visually confirming the state of conveyance of the conveyed object by the carrier belt 15, the upper surface of the sidewalk cover plate 30 provided above the trough frame 20 formed as a sidewalk is used. The lid 31 of the inspection hole 30A provided at a predetermined interval is opened to open the inspection hole 30A.
Can be easily performed via Since the upper surface of the member (sidewalk cover plate 30) that covers the upper opening of the transport trough 21 is configured as a sidewalk, the configuration is smaller and lighter than the configuration in which the sidewalk is provided on the side of the trough frame 20. It is possible to reduce the cost, and especially when a plurality of conveyors are juxtaposed, to reduce the juxtaposed interval to improve the space efficiency.

The above configuration example is one in which the configuration of the present invention is applied to a conveyor having an air levitation structure for both the transport path and the return path of the carrier belt, but the return path is one in which the carrier belt is supported by a trolley. It may be. The return path trough 22 is formed in a convex shape so that the surface side (load side) of the carrier belt 15 in the return path is concave, but the shape of the return path trough 22 is not limited to this. Conversely, it may be concave or flat, and can be changed as appropriate.

[0029]

As described above, according to the air levitation type belt conveyor device of the present invention, the substantially flat sidewalk cover member provided with the inspection hole is provided on the upper side of the transport trough member so as to be covered. The sidewalk cover member forms a moving space for the transport belt, which is isolated from the outside, between the lower surface and the upper surface of the transport trough member, and the sidewalk is formed on the upper surface. Downsizing is possible, and a plurality of units can be arranged side by side at small intervals, so that space efficiency can be improved. In addition, it is possible to easily check the transport state through the inspection hole.

[Brief description of the drawings]

FIG. 1 is a conceptual configuration diagram of a vertical cross section of an entire air-floating belt conveyor device according to the present invention.

FIG. 2 is an enlarged sectional view corresponding to an AA section in FIG.

FIG. 3 is a partial plan view of the air-floating belt conveyor device.

FIG. 4 is a partial side view of the air-floating belt conveyor device.

FIG. 5 is a schematic cross-sectional perspective view of an example of a conventional air levitation type belt conveyor device.

FIG. 6 is a sectional view of a conventional example.

[Explanation of symbols]

 Reference Signs List 10 conveyor 14 transfer space 15 carrier belt (loading belt) 20 trough frame (frame) 20A side plate (side plate member) 21 transfer trough (transport trough member) 21A orifice 22 return trough (return trough member) 22A orifices 23, 24 air duct (Air supply path) 23A, 24A Duct member (air passage forming member) 30 Sidewalk cover (sidewalk cover member) 30A Inspection hole

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shigezo Kitsuki 1-19-10 Mori, Koto-ku, Tokyo Ishikawajima-Harima Heavy Industries, Ltd.Koto Office

Claims (2)

[Claims] 1. A conveyor device in which an endless load belt that is driven to rotate and conveys and conveys a conveyed object along an upper moving path thereof, wherein the conveyer belt conveys and moves the conveyed object. On the lower side, a conveyed trough member formed in a concave shape that opens upward along the moving direction of the load belt extends, and an air supply path is disposed below the conveyed trough member. In a configuration in which air supplied from a supply path to an upper surface side of the transport trough member through an orifice formed in the transport trough member opens the load belt from the surface of the transport trough member. A substantially flat sidewalk cover member provided with an inspection hole is provided on the upper side of the transport trough member, and the sidewalk cover member is isolated from the outside between a lower surface thereof and an upper surface of the transport trough member. Before Air floating belt conveyor device, characterized by forming a sidewalk on the upper surface thereof to form a movement space simply belt. 2. A return trough member extends below the return path of the load belt, and an air supply path is provided below the return trough member. The air supplied to the upper surface side of the return trough member through an orifice formed in the trough member is configured to float the load belt from the surface of the return trough member. The member according to claim 1, wherein both side edges of the member are fixed to upper and lower edges of the side plate member, respectively, and the transport trough member, the return trough member, and the side plate member form a closed-section frame. Levitation type belt conveyor equipment.