JPH0413245B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a hose-type conveyor belt.

BACKGROUND ART Conventionally, hose-type conveyor belts have been used to convey objects such as powder or granules.

Conventionally used hose-type conveyor belts are originally made flat, but are forcibly transformed into a cylindrical shape in the carrier section between the return sections at both ends. In order to forcibly deform the flat belt into a cylindrical shape in this way, a large number of rollers are provided in pressure contact with the outer surface of the belt and along the outer periphery of the cylindrical belt, and these roller groups are moved in the longitudinal direction of the carrier section. The belt was held in a cylindrical shape at appropriate intervals.

Problems to be Solved by the Invention As described above, the conventional hose-type conveyor belt has the problem of large fatigue deterioration because the flat belt is forcibly deformed into a cylindrical shape over the entire length of the long carrier section. Ta. Also, in order to hold the belt in a cylindrical shape over the entire length of the long carrier section, a large number of roller groups are required, and since the arrangement of these rollers has to be cylindrical, each roller group has at least four or more rollers. However, there was a problem in that the resistance due to the large number of rollers was large, and the drive power for the belt had to be increased.

The present invention solves these problems,
Eliminating forced deformation of the belt in the carrier section reduces fatigue deterioration of the belt, and also eliminates the need for rollers that force the belt to deform into a cylindrical shape, simplifying the configuration and further reducing belt driving power. The purpose is to

Means for Solving the Problems In order to solve this problem, the present invention has a reinforcing fabric layer and a core canvas layer, is covered with rubber, is formed into a cylindrical shape, and extends along the longitudinal direction. It is characterized in that the incision is located at the center of the portion of the core canvas that is not reinforced by the layers.

Effect: With this configuration, it is only necessary to forcibly open the belt into a flat plate at the loading and unloading sections (head pulley section and tail pulley section) of the conveyed object, and in the carrier section, the belt has a cylindrical shape. Since the belt has a restoring force that tends to return to the original shape, there is no need for any means to forcibly deform the belt into a cylindrical shape; all that is required is a roller that supports the weight of the belt and the conveyed object. For this reason,
The number of rollers required is extremely small, the driving power of the belt can be reduced, the frame equipment of the belt conveyor can be simplified, and fatigue deterioration of the belt can be significantly reduced. Furthermore, since the original shape of the belt of the present invention is cylindrical as mentioned above, it naturally tries to restore itself to the cylindrical shape after passing the loading and unloading sections of the conveyed object. The distance required to change the shape, that is, the trough conversion distance, is short, and as a result, the total length of the belt is shortened, making it possible to provide compact conveyance equipment. Furthermore, since the distance for forcibly deforming the belt is short, high-speed conveyance is possible.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

In Figures 1 to 6, reference numeral 1 denotes an endless belt, and a drive pulley 2 is located at the return section at one end of the conveyance path of the belt 1, and a drive pulley 2 is located at the return section at the other end of the conveyance path. Driven pulley 3
It is designed so that it can be rotated by being hung on it. As shown in FIG. 2, the belt 1 is made in advance into a hollow cylindrical shape (hose shape) and cut in the longitudinal direction, and its enlarged cross-sectional structure is the inner surface of the hose as shown in FIG. It has a cover rubber layer 4 with a thickness of 0.5 to 3 mm on the side, a first reinforcing cloth layer 5 on the outside thereof, and a second reinforcing cloth on the outside with a rubber layer 6 of 0.2 to 1 mm thick. having a layer 7 and a thickness on the outside thereof
It has a rubber layer 8 with a thickness of 0.5 to 3 mm, a core canvas 9 on the outside thereof, and a cover rubber layer 10 with a thickness of 0.5 to 3 mm on the outside thereof. More specifically, the first and second reinforcing fabric layers 5 and 7 are made of polyester, nylon, or the like and are made of thread-like materials or string-like materials that are arranged in a plane, or threads of the above-mentioned materials. The reinforcing fabric layer is either a woven fabric made from the above-mentioned materials or a non-woven fabric made from the above-mentioned materials, and these are collectively referred to as the reinforcing fabric layer. The first and second reinforcing fabric layers 5 and 7 are continuously wound in spirals in opposite directions (see FIG. 5).
In addition, the core canvas 9 is made of polyester for warp threads and nylon for weft threads, and is plain woven with a yarn weight of 150~
It is made to a roughness of about 350 mesh, and the roughness is about 150~
It has a total strength of 500Kg. The core canvas 9 is provided over a range of 50 to 80% of the entire circumference of the belt 1, excluding the cutout 12 of the hose-shaped belt 1. Specifically, the core canvas 9 is provided symmetrically with respect to a line passing through the cutout 12 and the center of the belt 1, and the core canvas 9 is configured so that it does not exist in the vicinity of the cutout 12. .

When cutting the hose-shaped belt 1 having such a structure, for example, a mandrel is inserted into the center of the hose-shaped belt 1 and the core canvas 9 is cut open.
It is sufficient to make a straight incision with a cutter in the center of the part where no mandrel exists, or it is also possible to make a straight incision with a circular saw without inserting the mandrel. In making this incision, the belt can be easily incised by appropriately cooling at least one of the belt to be incised and the incision means with dry ice, ice, water, etc.
Moreover, the incision surface can be cut smoothly. The incision position of the belt 1 to be incised in this manner is set at the upper end of the belt 1 located above between the return portions at both ends as shown in FIG. This cut belt 1 has reinforcing cloth layers 5 and 7 inside.
Due to the presence of the core canvas 9, the belt 1 does not naturally become flat when it opens from the incision, and in particular, the presence of the core canvas 9 prevents the belt 1 from overlapping at the incision 12. , and the incision 12 is closed.

The hose-shaped belt 1 constructed as described above is driven by being hung endlessly around the driving pulley 2 and the driven pulley 3 as shown in FIG. Both pulleys 2 and 3 are strongly pressed against the belt 1 so that the belt 1 is substantially flat at the contacting portion as shown in FIG. In this way, the belt portion that is in contact with both pulleys 2 and 3 is almost flat, but the belt 1
As the belt moves away from both pulleys 2 and 3, the belt 1 tries to restore its cylindrical shape. In the carrier section between both pulleys 2 and 3, the belt 1 forms an almost completely sealed cylindrical space, and the object to be transported is transported while being confined within this closed space.

By the way, in the embodiments described above, the reinforcing fabric layers 5 and 7 are provided with two layers, but there may be three or more layers, and the core canvas 9 is provided with one layer, but two or more layers may be provided. The reinforcing fabric layers 5, 7 and the core canvas 9 may be partially or entirely coated on one or both sides with rubber.

Further, the belt 1 which has been cut as described above is wound up and stored around a spindle-shaped roller 11 having a convexly curved center as shown in FIG. By using such a roller 11, the belt 1 can be wound up by strongly pulling the center portion in the width direction of the belt 1, and the belt 1 can be wound up while the cut line of the belt 1 is held in a straight line. I can do it.

Effects of the Invention As described above, the belt of the present invention is made in advance into a hollow cylindrical shape (hose shape) and cut in a straight line along the longitudinal direction. Objects to be transported can be transported in a sealed state, and the belt only needs to be forcibly opened into a flat plate at the loading and unloading sections (head pulley section and tail pulley section). Since the belt has a restoring force that tries to return to the cylindrical shape, there is no need for any means to forcibly deform the belt into a cylindrical shape. Good. Therefore, the number of rollers required is extremely small, the driving power of the belt can be reduced, the frame equipment of the belt conveyor can be simplified, and fatigue deterioration of the belt can be significantly reduced. Furthermore, since the original shape of the belt of the present invention is cylindrical as mentioned above, it naturally tries to restore itself to the cylindrical shape after passing the loading and unloading sections of the conveyed object. The distance required to change the shape, that is, the trough conversion distance, is short, and as a result, the total length of the belt is shortened, making it possible to provide compact conveyance equipment. Furthermore, since the distance for forcibly deforming the belt is short, high-speed conveyance is possible.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a general perspective view, FIG. 2 is a cross-sectional view taken along line XX in FIG. 1, and FIG. 3 is a cross-sectional view taken along line Y-Y in FIG. 1. , 4th
5 is an enlarged sectional view of the belt, FIG. 5 is a perspective view showing how the reinforcing fabric layer is arranged, and FIG. 6 is a perspective view showing the belt being wound around a spindle-shaped roller. DESCRIPTION OF SYMBOLS 1... Belt, 2... Driving pulley, 3... Driven pulley, 4... Cover rubber layer, 5... First reinforcing fabric layer, 6... Rubber layer, 7... Second reinforcing fabric layer, 8... Rubber layer, 9... Core canvas, 10... Cover rubber layer, 12... Cutout.

Claims (1)

[Claims] 1 It has a reinforcing fabric layer and a core canvas layer, is covered with rubber, is formed into a cylindrical shape, and is cut along the longitudinal direction, and the cut portion is reinforced with the core canvas layer. A hose-type conveyor belt characterized by being configured so that it is located in the center of the part that is not covered.