JPH05221508A - Cover for belt conveyor - Google Patents

Abstract

PURPOSE:To smoothen preservation of conveying route and opening/closing work of a cover for inspection of the route and to reduce manufacturing and equipment cost by employing a flexible bellows shaped roof cover. CONSTITUTION:A flexible bellows shaped roof cover is formed by means of spreading a waterproof sheet 4 over a plural number of arch shaped aggregates 3 arranged at intervals. A cover unit 1 is then formed by providing a roller 5, which can roll over rails 2 installed on both sides of the conveyor route of a belt conveyor A, on the lower end part on both sides of the arch shaped aggregates 3. The roller portions 5 of this unit cover 1 are mounted on the rails 2 to cover at least a part of the conveying route of the belt conveyor A and a part of the conveying route are uncovered by contracting one end of the cover unit 1 to the other end in a bellows shape when required.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover of a long belt conveyer for conveying powder or granular material such as ore, crushed stone or grain.
More specifically, the present invention relates to a belt conveyor cover that can be easily opened and closed to inspect a conveyance path.

[0002]

2. Description of the Related Art For example, a long belt conveyor is used in a civil engineering facility such as a cargo handling facility in a harbor for transporting the above-mentioned powdery particles. And when this type of belt conveyor has a long transportation route and is installed outdoors at a high place, a belt conveyor cover is required to protect the conveyed items from wind and rain, and the cover is used for checking and conveying the conveyed items. It is required to have a structure that can be opened at least in part for inspection of the road.

For this reason, various measures have heretofore been made for the cover of such a belt conveyor. For example, an arch-shaped cover unit as described in Japanese Utility Model Publication No. 55-496 is connected to form a roof of a conveyance path, and one of such cover units is hingedly attached at one side thereof to the upper side. The one that can be opened to. Alternatively, as described in Japanese Utility Model Laid-Open No. 62-171516, several covers having different sizes are accommodated in the outermost cover so that the covers can be expanded and contracted. As a typical example thereof, one provided on the transport path can be given.

[0004]

However, as in the former structure, in the cover in which one side of the cover is pivotally attached and lifted upward from the other side to open, the structure is relatively simple and the equipment is Although there is an advantage that the cost is low, opening and closing work requires much labor, and especially when the belt conveyor is wide, the opening and closing work is dangerous. Also, the latter type of extendable type expandable cover has an advantage that the opening and closing work can be smoothly performed, but it has a drawback in economical aspect that manufacturing equipment cost increases. The present invention provides a cover for a belt conveyor, which can be smoothly opened and closed, has a low manufacturing equipment cost, and can cover a part of the conveyance path of the belt conveyor in good appearance.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a cover unit is configured to be able to expand and contract in a conveyor path direction of a belt conveyor, and a roller roller is attached to a lower end portion of an arch-shaped aggregate forming the cover unit. The roller roller is made rollable along the guide rails provided on both sides of the transport path, and the cover unit is mounted on the guide rail to solve the above problem.

That is, according to the present invention, a waterproof sheet is stretched over a plurality of arch-shaped aggregates arranged at intervals to form a bellows-like stretchable roof cover. A cover unit is provided by providing coco rollers that can roll on rails provided on both sides of the conveyor belt conveyance path.
The roller unit is supported on the rail and a cover unit is mounted to form a cover of a belt conveyor.

The cover of the belt conveyor which can be expanded and contracted in a bellows shape according to the present invention is formed by bending a lightweight pipe material or a bar material into a semicircular shape or a mountain shape, and forming both ends of the arch-shaped aggregate material forming the roof cover. It can be easily formed by attaching a metal fitting for rotatably supporting the roller to the part, disposing a plurality of such aggregates at intervals of 50 to 100 cm, and covering the upper surface with a waterproof sheet. .

It is preferable that the roller roller is made of synthetic resin and has flanges having a diameter larger than that of the roller portion on both sides of the outer end and / or both sides of the inner end. And it can roll accurately without coming off the rail. If, for example, a hook located on the lower surface side of the rail is provided at the lower end of the metal member that supports the roller, the roller can be prevented from floating from the rail surface, and the positional displacement of the cover due to the influence of wind can be eliminated. .

Although the entire long conveying path of the belt conveyor may be covered with a stretchable cover like the one shown above, most of the conveying path is covered with a fixed type cover, and a predetermined portion which needs to be frequently inspected. Placing the cover of the present invention in is a preferred use.

[0010]

In the cover of the present invention, the roller rollers are connected to the rails, and the rollers are extended so that the front and rear roller rollers are braked to cover the main area of the convey path by the belt conveyor, for example, the equipment part of the belt conveyor drive device. And like the cover of the conventional belt conveyor, the installation portion of the drive device is protected from wind and rain, and the transported articles are prevented from scattering. Then, when inspecting the drive unit, after releasing the braking of the front or rear roller roller and then pushing the arched aggregate on the released side toward the braking side, the cover shrinks in a bellows shape, and the cover of the transport path is closed. The door is opened to make a doorway for an operator for inspection, and after the work is completed, the moved arch-shaped aggregate is returned to its original position to brake the roller roller to close the opening.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing an embodiment of the present invention, FIG. 1 is a perspective view of a partially cut cover, 1 is a cover unit and 2 is extended to both sides of a conveyor belt conveyance path. The cover unit 1 includes a plurality of arch-shaped aggregates 3, 3 arranged at intervals.
A roof cover having a waterproof sheet 4 stretched thereon and formed in a bellows-like stretchable state; and each arch-shaped aggregate 3,
The roller rollers 5 and 5 are provided at the lower ends of both sides of the roller 3 and roll on the rail 2.

As shown in FIG. 2, the roller roller 5 has a flange 6 on the outside thereof in this embodiment,
A lower end of the auxiliary metal fitting 8 is rotatably supported between a main metal fitting 7 fixed to the lower end of the arch-shaped aggregate 3 and an L-shaped auxiliary metal fitting 8 fixed to the outer surface of the main metal fitting 7. The portion is provided with an engaging portion 9 which is bent inward in a U shape, and when the rail 2 is made of a steel material having an L-shaped cross section, as shown in FIG. By fitting the engaging portion 9 to the lower edge of the side wall of the rail 2, the cover unit 1 is prevented from being lifted up by the external force and the roller roller 5 is separated from the rail 2 under any strongest wind force. The position and shape of the fitting portion 9 are arbitrarily selected according to the structure of the rail.

The above-mentioned cover unit 1 of the present invention may be continuously provided on the conveying path of a long belt conveyor to cover the entire length, but as shown in FIG. 4, most of the entire length is covered. Using the conventional simple fixed cover 10,
That is, it is rational to use the cover unit 1 of the present invention at the joints of the front and rear belt conveyors, the drive section of the belt conveyors, the curved portions of the rails, the portions requiring an internal inspection, and the predetermined 20 to 30 m intervals. It becomes a conveyor cover.

[0014]

As described above, the belt conveyor cover according to the present invention has a plurality of arched aggregates 3 arranged at intervals.
A waterproof sheet 4 is stretched on the upper part to form a bellows-like stretchable roof cover, and the arch-shaped aggregate 3 rolls on rails 2 provided on both sides of the transport path of the belt conveyor A at the lower end portions on both sides. Cover unit 1 equipped with possible roller rollers 5
The roller roller 5 is supported on the rail 2 and is mounted on at least a part of the conveyor path of the belt conveyor A. The conveyor path of the belt conveyor A covered by this cover. Can sequentially contract in a bellows shape by a simple work of moving one end side of the cover unit 1 toward the other end side, and can easily open a desired portion. In addition, the cover unit 1 can be obtained with an arbitrary effective length by changing the number and intervals of the arch-shaped aggregates 3, and can be applied to a curved portion of the transportation route. To do.

Further, not only is it easy to manufacture and construct, but it becomes remarkably compact when re-contracted, which is convenient for storage and transportation after manufacture, and the equipment cost of the belt conveyor cover can be reduced, and the roof can be further reduced. If a transparent resin sheet is used as the waterproof sheet 4 that is configured, a conveyance state can be confirmed from the outside of the cover, and a trouble occurrence point can be found early, and a great effect can be obtained as a belt conveyor cover.

[Brief description of drawings]

FIG. 1 is a perspective view of a cover unit.

FIG. 2 is a perspective view of a roller unit.

FIG. 3 is a sectional view showing a state in which the rail is mounted.

FIG. 4 is a simplified perspective view showing an embodiment in which a belt conveyor is conveyed.

[Explanation of symbols]

 1 Cover Unit 2 Rail 3 Arched Aggregate 4 Waterproof Sheet 5 Corolla A Belt Conveyor

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[Procedure amendment]

[Submission date] December 4, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

[Title of Invention] Cover for belt conveyor

Claims (1)

[Claims] 1. A bellows-like stretchable roof cover is formed by tensioning a waterproof sheet on a plurality of arched aggregates arranged at intervals, and a belt conveyor is provided at both lower ends of the arched aggregates. The cover unit is configured with roller rollers that can roll on rails provided on both sides of the transport path of
A cover for a belt conveyor, characterized in that the roller rollers are supported on the rails and mounted on at least a part of a conveying path of the belt conveyor.