JP2000289821A - Pneumatically floating type belt conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a bypass passage for communicating return side ducts on both sides nipping a takeup mechanism by easy and simple structure, and moreover make the passage non-protrusive to the conveyer side. SOLUTION: This belt conveyer supplies air between carrier and return side troughs 6 and 7 and a belt 1 via carrier and return side ducts 10 and 11, to travel the belt 1 in its floating condition. In this case, a takeup mechanism 14 is provided, which is dividing the duct 11 in the longitudinal direction to impart given tensile force to the belt 1 from the gap 11a, to provide a bypass passage 17 integrally with a side plate 4, etc., (frame main body 3) for supporting the troughs 6 and 7 so as to allow the duct 11 on both sides nipping the mechanism 14 to communicate with each other.

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 transporting a lump, granular, or powdery load of ore, coal, grain, etc., in which the belt is floated by an air layer. The present invention relates to a belt conveyor.

[0002]

2. Description of the Related Art In general, a belt conveyor is used to convey a lump, granular, or powdery load of ore, coal, grain, or the like. An example of such a conveyor is shown in FIG. The belt conveyor shown in FIG. 6 is provided with a carrier-side trough 102 and a return-side trough 103 having an arc-shaped cross section, and a belt 101 for placing a load on the upper surface thereof.
To supply air between the belt 101 and the belt 101
An air levitation system is used in which the vehicle travels while levitating.

[0003] The belt conveyor has ducts 105, 105 on the lower surface of troughs 102, 103 for guiding a belt 101.
Each of the troughs 102 and 103 is provided with a number of air holes 104 at the center in the width direction along the longitudinal direction. Then, air is blown upward from each air hole 104 by sending air from the blower 107 into each duct 105, 106 to form an air layer between the belt 101 and each trough 102, 103. , 103 are lifted.

[0004] By adopting such a configuration, the air levitation type belt conveyor can greatly reduce the resistance acting on the belt as compared with the conventional roller type belt conveyor, and can reduce the burden of driving the belt. Further, noise and vibration can be reduced.

[0005]

By the way, in this type of belt conveyor, a predetermined tension is applied to the belt 101 in order to secure the frictional force between the belt 101 and the driving wheels and to ensure the proper running of the belt 101. A take-up mechanism is installed. The take-up mechanism is, for example, a belt 10
A part of the belt conveyor 1 is pulled in a direction substantially perpendicular to the running direction to apply tension to the belt 101, and is generally installed at the start or end of the belt conveyor. However, there are cases where the take-up mechanism must be installed in the middle of the belt conveyor due to the arrangement of the conveyor.

When such a take-up mechanism is installed at an intermediate portion of the conveyor, in the air-floating belt conveyor, a part of the return-side trough 103 is cut away to install the take-up mechanism. The duct 106 is also separated by a take-up mechanism, and it is necessary to connect the ducts 106 on both sides by a bypass. However, when a pipe is used as a bypass, the pipe may overhang the side of the conveyor, and the space efficiency is reduced. Further, a support material for supporting the pipe is required, and the construction of the pipe is troublesome and the number of parts increases, which is not economical in terms of cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and when a take-up mechanism is installed in a middle portion of a conveyor, a bypass passage for communicating return ducts on both sides of the take-up mechanism is easily and simply provided. It is an object of the present invention to provide an air-floating belt conveyor which can be formed with a simple structure and in which this bypass passage does not protrude to the side of the conveyor.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, air is supplied between a trough and a belt through a carrier side and a return side duct provided in the trough. An air-floating belt conveyor that runs while the belt is lifted, and a take-up in which a return side duct is divided in a longitudinal direction and a predetermined tension is applied to the belt from the gap using the return side of the belt. A technology is provided in which a bypass passage is provided integrally with the frame body supporting the trough so that the return ducts on both sides of the take-up mechanism are communicated with each other. In this air-floating belt conveyor, a take-up mechanism is installed in a gap that divides the return-side trough, and the return-side trough communicates with a bypass passage that is provided integrally with the frame body. It is possible to form a bypass passage, and the bypass passage does not protrude to the side of the conveyor as compared with using a pipe or the like, thereby avoiding deterioration of space efficiency when installing the conveyor. It becomes possible. Further, since no support material is required for the bypass passage, the number of components required for the bypass passage can be reduced, and the cost can be reduced.

According to a second aspect of the present invention, in the air-floating belt conveyor according to the first aspect, a technique in which a bypass passage is provided integrally with a side plate of a frame body is applied.
In this air-floating type belt conveyor, since the bypass passage is provided integrally with the side plate of the frame main body, a part of the side plate can be used to form the bypass passage, so that the conveyor manufacturing cost can be further reduced. Further, since the bypass passage is provided integrally with the side plate, the bypass passage itself bears a part of the frame strength of the frame main body, and it is possible to substitute a part of the reinforcing material necessary for the frame main body with the bypass passage. Become.

[0010] The invention according to claim 3 is the invention according to claim 1 or 2.
In the air levitation type belt conveyor, a technology is applied in which a roller for supporting the return side of the belt is installed in a gap formed by dividing the return side duct. In this air levitation type belt conveyor, a take-up mechanism is installed and a roller that supports the belt is installed in the gap that divides the return side duct, so that a part of the belt that does not air float is appropriately supported by the roller. Thus, smooth running of the belt can be ensured.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. This air levitated belt conveyor is
As shown in FIG. 5, lumps, granules,
It is installed to transport powdery loads,
A belt 1 on which a load is placed is wound around two pulleys 2 and 2a, and is configured so as to orbit by a drive mechanism (not shown). 1 is a side view of an air-floating belt conveyor according to the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 4 is a sectional view taken along the line CC of FIG.

As shown in FIGS. 1 and 2, the frame body 3 includes a pair of left and right side plates 4 and 4a, a cover 5 attached to the upper surface of the side plates 4 and 4a, a column supporting the side plates 4 and 4a, and the like. And a beam (not shown). And, between the side plates 4 and 4a, an arc-shaped cross section is formed and the air holes 8, 4 are formed.
Trough 6 and return trough 7 with
Are mounted, and a carrier-side duct 10 and a return-side duct 11 are provided on the lower surface side.
Note that the belt 1 is installed on the carrier side trough 6 and the return side trough 7. A large number of air holes 8 and 9 are provided at predetermined intervals along the longitudinal direction at the center of the troughs 6 and 7 in the width direction.

Air at a predetermined pressure is supplied to the carrier side duct 10 and the return side duct 11 through blowers (air supply means) 12 and 13. As a result, air is ejected from the air holes 8 and 9 onto the troughs 6 and 7 so that the belt 1
An air layer is formed between the belt 1 and each of the troughs 6 and 7, and the belt 1 can be run in a floating state by using the static pressure of the air layer. Note that the amount of air blown is determined by each of the blowers 12 and 13.
It is adjusted by the driving state of the air conditioner and the opening and closing of a valve attached to each blower. Although the shape of the ducts 10 and 11 is different from the shape of the duct shown in FIG. 6, the shape is arbitrary as long as air can be ejected from the air holes 8 and 9 of the troughs 6 and 7.

As shown in FIG. 1, the take-up mechanism 14 includes a gap 1 formed by dividing the return-side duct 11 in the longitudinal direction.
1a, the belt 1 on the return side is taken in via a pulley 15, and a predetermined tension is applied to the belt by a tension applying mechanism 16. However,
The form of the take-up mechanism 14 is arbitrary, and various known configurations that can apply tension to the belt 1 can be applied.

As shown in FIG. 1, when air is supplied from the blower 13 on the right side of the separated return duct 11, a bypass passage for supplying air to the left duct is required. As shown in FIGS. 1, 3 and 4, the bypass passage 17 is provided integrally with the side plates 4 and 4a and has a connecting portion 17a for connecting to each of the separated return-side ducts 11. . Although the cross-sectional area of the bypass passage 17 can be set arbitrarily,
The cross-sectional area is set to ensure air communication so that necessary air is supplied to at least the left-side return duct 11.

As described above, since each of the return ducts 11 separated by the bypass passage 17 is connected, even if air is supplied from the blower 13 to the right return duct 11 as shown in FIG. Air is appropriately supplied to the left-side return duct 11 through the passage 17, and air necessary for floating the belt 1 can be ejected from the air holes 9 in any of the left and right return-side ducts 11.

Further, the bypass passage 17 is provided in the side plates 4, 4a.
Is formed in a state in which a part of the pipe is used, it can be formed easily as compared with a bypass passage using a pipe or the like, and further, support for supporting the pipe or the like becomes unnecessary. Further, the bypass passage 17 is connected to the side plates 4 and 4.
Since it is provided integrally with a, it is possible to reduce the deterioration of the space efficiency of the installation of the conveyor without protruding more than necessary to the side.

As shown in FIGS. 1 and 4, a plurality of rollers 18 for supporting the return side belt 1 are provided in a gap 11a used for installing the take-up mechanism 14.
Is installed. This roller 18 is used for the return side trough 1.
Plural arrays are arranged in a substantially arc shape so as to be similar to the substantially arc-shaped cross-section of one. As a result, a part of the belt 1 that does not float in the gap 11a is appropriately supported by the roller 18, and the smooth running of the belt 1 is ensured. However,
The arrangement state of the rollers 18 and whether or not the rollers 18 are installed are optional.

It should be noted that the shapes, combinations, and the like of the components shown in the above-described embodiment are merely examples, and can be variously changed based on design requirements without departing from the spirit of the present invention. For example, in the above-described embodiment,
As shown in FIG. 4, the bypass passage 17 is provided outside the side plates 4 and 4a. Instead, the bypass passage 17 protrudes inside the side plates 4 and 4a, that is, above the return side belt 1. It may be provided. In this case, the passages for connecting to the left and right return side ducts 11 are side plates 4 and 4.
Although it is provided so as to protrude outward from a, the deterioration of the space efficiency when installing the conveyor can be further reduced.

[0020]

As described above, in the air-floating belt conveyor according to the first aspect, the take-up mechanism is installed in the gap dividing the return side trough, and the bypass is provided integrally with the frame body. Since the return side trough is communicated by the passage, the bypass passage can be formed with an easy and simple structure, and the bypass passage does not protrude to the side of the conveyor as compared with using a pipe or the like, so that the conveyor can be formed. Deterioration of space efficiency at the time of installation can be avoided. Further, since no support material is required for the bypass passage, the number of components required for the bypass passage can be reduced, and the manufacturing cost can be reduced.

In the air levitation type belt conveyor according to the second aspect, since the bypass passage is provided integrally with the side plate of the frame main body, the bypass passage can be formed by using a part of the side plate, thereby reducing the manufacturing cost of the conveyor. It can be further reduced. Further, since the bypass passage is provided integrally with the side plate, the bypass passage itself bears a part of the frame strength of the frame main body, and a part of the reinforcing material and the like necessary for the frame main body can be replaced with the bypass passage.

According to the third aspect of the present invention, the take-up mechanism is provided and a roller for supporting the belt is provided in a gap between the return ducts. The portion can be appropriately supported by the roller, and smooth running of the belt can be ensured.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of an air-floating belt conveyor according to the present invention.

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

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along the line CC of FIG. 1;

FIG. 5 is a schematic view showing a state of use of the air levitation type belt conveyor.

FIG. 6 is a perspective view showing a conventional air levitation type belt conveyor.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 belt 3 frame body 4, 4 a side plate 6 carrier side trough 7 return side trough 10 carrier side duct 11 return side duct 11 a gap 14 take-up mechanism 17 bypass passage 18 roller

Claims (3)

[Claims] 1. An air-floating belt conveyor that supplies air between a trough and a belt through a carrier side and a return side duct provided on a trough and runs the belt in a state of being floated. A take-up mechanism that divides the return-side duct in the longitudinal direction and applies a predetermined tension to the belt from the gap using the return side of the belt; and return sides on both sides of the take-up mechanism. An air levitation type belt conveyor, wherein a bypass passage is provided integrally with a frame body supporting the trough so as to communicate with a duct. 2. The apparatus according to claim 1, wherein the bypass passage is provided integrally with a side plate of the frame main body.
An air-floating belt conveyor as described. 3. The air levitation belt conveyor according to claim 1, wherein a roller for supporting a return side of the belt is provided in a gap between the return side ducts.