Belt conveyor device

Abstract

To provide a belt conveyor device using a closed space within a building as a transport path, which can suppress an increase in weight.SOLUTION: In a belt conveyor device 1, main girders 20 extending in a conveying direction of a belt conveyor 50 are disposed on both sides of the belt conveyor 50 in a width direction, and lower parts of both the main girders 20 are connected by cross beams 25, and a floor plate 26 is laid on the cross beams 25 to form a gallery frame 10 having a through plate girder structure, and a tent frame 30 is provided so as to cover an upper part of the gallery frame 10, and a tent 40 is stretched over the tent frame 30 to form a closed space CS, and an inside of the closed space CS serves as a transport path for the belt conveyor 50.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a belt conveyor device having a closed space formed by a gallery frame and an upper structural member as a conveyance path.

Background Art

[0002] For the purpose of reducing scattering and noise of conveyed objects, a belt conveyor may be disposed in a closed space. FIG. 2 shows an example of a conventional belt conveyor device having a closed space CS in a building HS as a conveyance path. As shown in the figure, in a conventional belt conveyor device 100, in the building HS, main girders 101, 102, 103, 104 extending in the conveyance direction of the belt conveyor 117 are disposed at four locations (the four corners of a rectangular cross section) above, below, left, and right of the belt conveyor 117.

[0003] Then, the upper right main girder 101 and the lower right main girder 103 are connected by a right main column 105, the upper left main girder 102 and the lower left main girder 104 are connected by a left main column 106, and further, the lower right main girder 103 and the lower left main girder 104 are respectively connected by a cross girder 107, and a floor board 108 is laid on the cross girder 107. A Western-style cottage structure 109 is provided between the upper right main girder 101 and the upper left main girder 102. The Western-style cottage structure 109 is composed of a purlin 110, a column bundle 111, a suspension bundle 112, a handrail 113, and a rafter 114. Then, a steel plate 116 is fixed to the left and right main columns 105, 106 and the rafter 114 via a support member 115 to form a closed space CS.

[0004] On the floor board 108 in this building HS, a belt conveyor 117 having a conveyor frame 118, a carrier roller 119, a return roller 120, and a conveyor belt 121 is disposed. A corridor PW for an operator to perform maintenance is formed between the belt conveyor 117 and the left and right main columns 105, 106.

[0005] The upper main girders 101 and 102 function as eaves girders that support the heavy Western-style cottage structure 109 and the steel plate 116. Also, the lower main girders 103 and 104 function as the foundation of the building. Therefore, H-shaped steel with sufficient strength is adopted for the upper, lower, left, and right main girders 101, 102, 103, and 104 respectively.

[0006] In addition, the left and right main columns 105 and 106 need to be set to dimensions that can ensure a maintenance space within the closed space CS (that is, higher than the height of the operator). Additionally, they need to support the weight of the upper structure composed of the upper main girders 101, 102, the Western-style cottage structure 109, and the steel plate 116. Therefore, CT-shaped steel with sufficient strength is adopted for the left and right main columns 105 and 106 (see Patent Document 1).

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] In the conventional belt conveyor device, as described above, since sufficient strength is required for each structural member constituting the building, there is a problem that the weight increases, the equipment cost rises, and the construction cost of the foundation, support legs, etc. also increases when installing. Therefore, the present invention is made by focusing on the above problems in the belt conveyor device, and an object of the present invention is to provide a belt conveyor device that can suppress an increase in weight in a belt conveyor device having a closed space inside a building as a conveying path.

Means for Solving the Problems

[0009] In order to solve the above problems, a belt conveyor device according to an aspect of the present invention arranges main girders extending in the conveying direction of the belt conveyor on both sides in the width direction of the belt conveyor, connects the lower parts of both main girders with cross girders, lays a floor plate on the cross girders to form a gallery frame of a lower plate girder structure, provides a tent frame so as to cover the upper part of the gallery frame, stretches a tent on the tent frame to form a closed space, and is characterized in that the inside of the closed space is used as the conveying path of the belt conveyor.

[0010] According to the belt conveyor device according to an aspect of the present invention, since the upper structure constituting the roof is a lightweight tent frame and a tent stretched on the tent frame, the gallery frame supporting it can also be a simple lower plate girder structure. Therefore, the weight of the entire building can be reduced, and the equipment cost and construction cost can be reduced.

[0011] Here, since the inside of the closed space is covered with steel plates on the side walls and the roof, there is a problem that lighting must be provided and the equipment cost increases. On the other hand, in the belt conveyor device according to an aspect of the present invention, the tent can be formed of a white color system that transmits natural light. With such a configuration, since the upper structure constituting the roof transmits natural light, it is only necessary to provide lighting equipment such as emergency lights in the closed space, which is suitable for reducing the equipment cost and electricity bill.

[0012] Further, in the belt conveyor device according to an aspect of the present invention, inside the closed space, an operator can stand upright. When the length from the lower end to the upper end of the main girder is A, the length from the lower end of the main girder to the upper end of the belt conveyor is B, and the length from the lower end to the upper end of the tent frame is C, the relationships of A > B... (Equation 1) and A ≈ C... (Equation 2) can be established. With such a configuration, the belt conveyor is surrounded by the gallery frame, the conveying state is stable, and the maintainability is ensured, and the balance between the gallery frame and the tent frame is suitable. Therefore, it is suitable for reducing the weight of the entire building and reducing the equipment cost.

Effects of the Invention

[0013] As described above, according to the present invention, in a belt conveyor device having a closed space in a building as a conveyance path, an increase in weight can be suppressed.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present invention will be described with appropriate reference to the drawings. Note that the drawings are schematic. Therefore, it should be noted that the relationship between the thickness and the planar dimensions, the ratio, etc. are different from the actual ones, and there are also portions where the dimensional relationships and ratios are different between the drawings. Further, the embodiments shown below illustrate devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention does not specify the materials, shapes, structures, arrangements, etc. of the components in the following embodiments.

[0016] As shown in FIG. 1, the belt conveyor device 1 of the present embodiment constitutes a building HS by a gallery frame 10, a tent frame 30, and a tent 40, and disposes a belt conveyor 50 in a closed space CS of the building HS.

[0017] The gallery frame 10 has main girders 20 disposed on the left and right of the belt conveyor 50. The left and right main girders 20 are each configured by connecting an upper flange 21 and a lower flange 22 extending in the conveyance direction of the belt conveyor 50 with a web plate 23. Reinforcing steel materials 24 are provided at appropriate positions on the main girders 20. The left and right main girders 20 are connected at their lower end portions to each other by a cross girder 25, and a floor plate 26 is laid on the upper surface of the cross girder 25 to form a lower plate girder structure.

[0018] The tent frame 30 is composed of a support column 31 and a truss assembly 32. The truss assembly 32 has a parallel chord Warren truss structure composed of an upper chord member 33, a lower chord member 34, and a diagonal member 35. A flange 36 and a lacing bar 37 are provided at the lower end of the support column 31. The gallery frame 10 and the tent frame 30 are joined by abutting the upper flange 21 and the flange 36 and using bolts (not shown).

[0019] A tent 40 is stretched between the support column 31 and the upper chord member 33 of the tent frame 30. The material of the tent 40 is, for example, an ester canvas that has sufficient strength and excellent weather resistance, and since the color is white, natural light can pass through. Also, for the tent 40, a tightening string (not shown) at the lower end is attached to the lacing bar 37 to apply tension.

[0020] A belt conveyor 50 is provided on the floor board 26 inside the building HS. The belt conveyor 50 is composed of a conveyor frame 51, carrier rollers 52, return rollers 53, and a conveyor belt 54. A vertical girder 27 is provided as a reinforcing member on the horizontal girder 25 at the location where the conveyor frame 51 is mounted. A walkway PW for an operator OP to perform maintenance is formed between the belt conveyor 50 and the left and right main girders 20.

[0021] In the belt conveyor device 1 of this embodiment, an operator OP can stand upright in the closed space CS (for example, based on the average height of adult men based on statistics). When the length from the lower end to the upper end of the main girder 20 is A, the length from the lower end of the main girder 20 to the upper end of the belt conveyor 50 is B, and the length from the lower end to the upper end of the tent frame 30 is C, A > B ··· (Equation 1) A ≒ C ··· (Equation 2) is set in the relationship.

[0022] Next, the operation and effects of the belt conveyor device 1 of this embodiment will be described. Since the belt conveyor device 1 of this embodiment uses the closed space CS of the building HS as the conveyance path of the belt conveyor 50, conveyed objects do not scatter to contaminate the surrounding environment, and the operating noise of the device is reduced from propagating to the surroundings.

[0023] Focusing on the upper structure of the belt conveyor device 1 of this embodiment, since the truss assembly 32 with a parallel chord Warren truss structure constitutes the roof skeleton, the weight is reduced compared to the conventional Western-style hut assembly 109. Furthermore, in the belt conveyor device 1 of this embodiment, since the tent 40 is stretched over the tent frame 30 to form the closed space CS, the weight is reduced compared to the conventional steel plate 116. Therefore, the upper structure of this embodiment is significantly reduced in weight compared to the conventional belt conveyor device.

[0024] Thus, in the belt conveyor device 1 of this embodiment, since its upper structure is significantly reduced in weight compared to the conventional structure, the gallery frame 10 that supports it can also adopt a simple plate garter structure. Therefore, according to the belt conveyor device 1 of this embodiment, compared to the conventional belt conveyor device, the weight of the entire device is significantly reduced, and the equipment cost and construction cost can be reduced [Invention 1].

[0025] Also, since the conveyance path of the belt conveyor device 1 of this embodiment is arranged within the closed space CS of the building HS, the operation of the belt conveyor 50 is not affected by weather conditions. And since the tent 40 ensures sufficient strength and snow removal function against snow accumulation, it is possible to operate in winter even in snowy areas.

[0026] Furthermore, in the belt conveyor device 1 of this embodiment, since the tent 40 is configured with a white-based color that transmits natural light, the upper structure that constitutes the roof transmits natural light. Therefore, according to the belt conveyor device 1 of this embodiment, it is only necessary to provide lighting equipment such as emergency lights, and the equipment cost and electricity bill can be reduced [Invention 2].

[0027] In addition, in the belt conveyor device 1 of the present embodiment, an operator OP can stand upright in the closed space CS. When the length from the lower end to the upper end of the main girder 20 is A, the length from the lower end of the main girder 20 to the upper end of the belt conveyor 50 is B, and the length from the lower end to the upper end of the tent frame 30 is C, the relationships A > B ··· (Equation 1) and A ≒ C ··· (Equation 2) hold.

[0028] Therefore, in the belt conveyor device 1 of the present embodiment, the belt conveyor 50 is surrounded by the gallery frame 10, so that the conveying state is stable, and the maintainability is ensured. Since the balance between the gallery frame 10 and the tent frame 30 is suitable, it is suitable for reducing the weight of the entire building HS and reducing the equipment cost [Invention 3].

[0029] As described above, the embodiments of the present invention have been described with reference to the drawings. However, the belt conveyor device according to the present invention is not limited to the above embodiments, and various other modifications and changes to each component are of course allowed without departing from the gist of the present invention.

Explanation of Reference Numerals

[0030] 1 Belt conveyor device 10 Gallery frame (lower floor plate girder structure) 20 Main girder 21 Upper flange 22 Lower flange 23 Web plate 24 Reinforcing steel 25 Cross girder 26 Floor board 27 Vertical girder 30 Tent frame 31 Support column 32 Truss assembly (parallel chord Warren truss structure) 33 Upper chord member 34 Lower chord member 35 Diagonal member 36 Flange 37 Racking bar 40 Tent 50 Belt conveyor 51 Conveyor Frame 52 Carrier Roller 53 Return Roller 54 Conveyor Belt 100 Belt Conveyor Device 101, 102 Upper Right Main Girder, Upper Left Main Girder 103, 104 Lower Right Main Girder, Lower Left Main Girder 105, 106 Right Main Column, Left Main Column 107 Cross Girder 108 Floor Board 109 Western-style Cottage Structure 110 Brace Beam 111 Column Bundle 112 Suspension Bundle 113 Square Rod 114 Crossbeam 115 Support Material 116 Steel Plate 117 Belt Conveyor 118 Conveyor Frame 119 Carrier Roller 120 Return Roller 121 Conveyor Belt CS Closed Space HS Building OP Operator PW Corridor

Claims

1. Main girders extending in the conveying direction of the belt conveyor are arranged on both sides in the width direction of the belt conveyor, the lower parts of both main girders are connected by cross girders, and a floor plate is laid on the cross girders to form a gallery frame of a lower road plate gusset structure. A tent frame is provided so as to cover the upper part of the gallery frame, and a tent is stretched on the tent frame to form a closed space. A belt conveyor device, characterized in that the inside of the closed space is the conveying path of the belt conveyor.

2. The belt conveyor device according to claim 1, wherein the tent is composed of a white-based color that transmits natural light.

3. An operator can stand upright inside the closed space. When the length from the lower end to the upper end of the main girder is A, the length from the lower end of the main girder to the upper end of the belt conveyor is B, and the length from the lower end to the upper end of the tent frame is C. A > B... (Equation 1) A ≈ C... (Equation 2) The belt conveyor device according to claim 1 or 2, which has the relationship of.

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