JP2535103Y2 - Conveyor belt - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor belt having a structure in which abrasion-resistant chips are exposed on a surface thereof, which is used, for example, for conveying sinter or coke.

[0002]

2. Description of the Related Art Conventionally, a conveyor belt has a belt body, a number of wear-resistant chips laid on the upper surface side of the belt body, and a joint rubber provided between the wear-resistant chips. A structure in which a wear-resistant chip is exposed has been widely used.

[0003] However, the conventional conveyor belt has a problem that the wear-resistant chips fall off from the belt main body due to long-time use.
No. 706 proposed a technique for preventing the wear-resistant chip from falling off. FIG. 4 is a plan view of the conveyor belt, and FIG. 5 is a sectional view taken along the line BB of FIG. 5. Reference numeral 10 denotes a belt body having a rubber base, reference numeral 20 denotes a wear-resistant chip, and reference numeral 30 denotes joint rubber. As shown in the figure, the conveyor belt has a large number of wear-resistant chips 20 laid at predetermined intervals on the upper surface side of the belt body 10, and joint rubber 30 is disposed between the wear-resistant chips 20. Although the structure is the same as that of the conventional type, it is particularly characterized by the connection between the wear-resistant chip 20 and the belt body 10. That is, a hollow engaging hole 22 is provided inside the wear-resistant chip 20, and a part of the rubber portion of the belt main body 10 is loaded into and engaged with the hollow engaging hole 22 so that the upper side of the belt main body 10 is provided. Since the wear-resistant chip 20 is bonded, the joint rubber 30 between the wear-resistant chip 20 is worn out or fatigued by a long-term use, and thus the wear-resistant chip 20 and the joint rubber 30 are combined.
Even if there is no coupling force between them, the rubber portion loaded in the hollow engagement hole 22 makes it difficult for the wear-resistant chip to fall off from the belt main body.

[0004]

In the case of a conveyor belt in which the wear-resistant chips are exposed on the surface, when the belt 100 is bent by the pulley portion 4, as shown in FIG. One of the important issues is how to prevent the occurrence of through cracks.

[0005] This through crack is caused by the line of the joint rubber formed by the arrangement of the wear-resistant chips in the belt width direction.
The closer to a straight line, the more likely it is to occur. For this reason,
In the Japanese Utility Model Laid-Open No. 1-70606, as shown in FIG. 5 described above, in consideration of the arrangement of the wear-resistant chips 20, the joint rubber 30 therebetween is formed in a zigzag line at least in the width direction of the belt body. Proposed. However, as shown in FIG. 4, the line formed in the belt width direction of the joint rubber 30 in the zigzag direction has a more reduced generation of through cracks than the straight line as shown in FIG. Again, there were cases where through cracks a occurred.

The invention according to claim 1, that is, the first invention,
In view of such a problem, it is an object of the present invention to provide a conveyor belt capable of completely preventing penetration cracks of joint rubber by devising the shape and arrangement of the wear-resistant chips to be laid.

In the conveyor belt disclosed in Japanese Utility Model Laid-Open No. 1-70606, a part of the rubber portion of the belt body 10 is loaded and engaged with the hollow engagement hole 22 of the wear-resistant chip 20 as described above. In the loading / engaging step, the rubber portion enters the hollow engagement hole 22 through an opening formed on the surface opposite to the exposed surface of the wear-resistant chip 20, and the belt body 10 and the wear-resistant chip 20 are integrated. It is performed by molding. Therefore, in order to improve the gas discharge property during the molding of the belt body 10 and secure the rubber loading property into the hollow engagement hole 22, the wear-resistant chip 20 is used.
The exposed surface is provided with a plurality of gas vent holes 23 for communicating the inside of the hollow engagement holes 22 with the outside air. However, depending on the arrangement of the gas vent holes 23, the bending stress of the pulley portion 4 also causes a crack b in the wear-resistant chip 20 at the line connecting the gas vent holes 23 as shown in FIG. There was a problem that through cracks would occur.

[0008] The invention according to claim 2, that is, the second invention,
The present invention has been made in view of such a problem, and an object of the present invention is to provide a conveyor belt that can completely prevent penetration cracks of joint rubber by devising an arrangement of gas vent holes of a wear-resistant chip.

[0009]

For this reason, the first invention is to provide a belt body for preventing penetration cracks of joint rubber, a number of wear-resistant chips laid at predetermined intervals on the upper surface side of the belt body, and consists of a joint rubber disposed between wear chips, all the joint rubber disposed is at least toward the belt body width direction so that the zigzag line, a conveyor belt where the wear tip is laid ,Before
As the wear-resistant chip, at least one pair of diagonals has an acute angle.
The diagonal is the length of the belt.
The wear-resistant chip is laid so that the apex angle of the joint rubber zigzag line is acute.

Further, in order to prevent cracks of the wear-resistant chip and thereby prevent penetration cracks of the joint rubber in the conveyor belt of Japanese Utility Model Laid-Open No. 1-70706, the second invention of the present application discloses a belt using rubber as a base. A main body, and a number of wear-resistant chips laid on the upper side of the belt main body by loading and engaging a part of a rubber portion of the belt main body with a hollow engaging hole provided therein; A joint rubber disposed between the wear-resistant chips; and a gas for discharging gas from the hollow engagement holes when a part of the rubber portion is loaded into the hollow engagement holes on the exposed surface of the wear-resistant chips. In a conveyor belt provided with a plurality of vent holes, gas vent holes provided on each exposed surface of the wear-resistant chip,
The belt is arranged at least in the longitudinal direction of the belt body.

[0011]

According to the first invention of the present application, the joint rubber disposed between them is formed not in a straight line but in a zigzag line in the width direction of the belt body due to the arrangement of the square-shaped wear - resistant chips to be laid. When the belt is bent by the pulley portion, the bending stress is surely applied not only to the joint rubber but also to the square-shaped wear - resistant chip at any part of the belt, so that the load on the joint rubber is reduced. In particular, one pair
The diagonal of the square wear-resistant tip where the diagonal of
Jig for joint rubber
Since the apex angle of the sag line is an acute angle, linear bending stress applied to the joint rubber can be further reduced, and penetration cracks of the joint rubber that occur linearly in the belt width direction can be effectively prevented.

On the other hand, the second invention of the present application has a configuration in which a plurality of gas vent holes provided on the exposed surface of the wear-resistant chip are arranged at least in the longitudinal direction of the belt body, that is, arranged in the belt traveling direction. Therefore, for example, FIG.
As shown in the figure, when the belt is bent at the pulley portion, the bending stress linearly applied in the belt width direction does not simultaneously apply to each of the gas vent holes 21, and as a result, the frictional resistance at the line connecting the gas vent holes 21 is reduced. The chip 2 can be prevented from cracking, and the joint rubber can also be prevented from cracking through.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show an embodiment of a conveyor belt according to the present invention, wherein FIG. 1 is a plan view and FIG.
FIG. 2 is a sectional view taken along line AA in FIG. 1.

The conveyor belt according to the present embodiment is a conveyor belt applied to a case where a sinter having a maximum particle size of about 200 mm and a maximum temperature of about 110 ° C. is conveyed. This conveyor belt includes a belt body 1 having a rubber base and a belt body 1.
The conveyor belt is composed of a number of wear-resistant chips 2 laid at predetermined intervals on the upper surface side and having an exposed surface, and joint rubber 3 provided between the wear-resistant chips 2. Also,
As will be described later, two gas vent holes 21 are provided on the exposed surface of the wear-resistant chip 2.

The wear-resistant chips 2 have the same rhombic shape in plan view, and the diamond-shaped wear-resistant chips 2 are arranged so that the acute corners of the corners are oriented in the longitudinal direction of the belt, and have an angle of about 45 °. Are arranged in an inclined manner. The joint rubber 3 is disposed between the wear-resistant chips 2 arranged in this manner. Therefore, as shown in FIG. 1, among the lines of the joint rubber 3 formed by the wear-resistant chips 2, all the lines directed in the belt width direction have a zigzag shape, and all the vertical angles of the lines are acute angles. It has become. The inside of the wear-resistant chip 2 has a hollow engaging hole 22 which is opened on a surface facing away from the exposed surface and is fitted with and engaged with a part of the rubber portion of the belt body 1. In addition, wear-resistant chip 2
Are formed with two gas vent holes 21 for communicating the inside of the hollow engagement holes 22 with the outside air. This is because, in the conveyor belt of this embodiment, a part of the rubber portion of the belt body 1 is loaded and engaged in the hollow engagement hole 22 of the wear-resistant chip 2 as described above. The process is performed by forming the belt body 1 and the wear-resistant chip 2 integrally with the rubber portion of the belt body 1 through the opening of the hollow engagement hole 22. Therefore, the hollow engagement hole 2
The gas vent hole 21 is provided in order to improve the gas exhaustability of the inside 2 and to ensure the rubber loading into the hollow engagement hole 22. The vent hole 21 is provided in the belt body.
They are arranged in series in the longitudinal direction .

The distance between the wear-resistant chips 2 can be set to about 3 to 5 mm in consideration of the prevention of the wear of the wear-resistant chips 2 and the securing of the trough performance of the conveyor belt. Wear-resistant chip 2
Is formed of alumina ceramics. Wear-resistant chip
The thickness of 2 is 9 mm. A reinforcing layer 11 made of canvas is embedded in the belt body 1.

In using the conveyor belt according to this embodiment, the conveyor belt is stretched between a driving pulley and a driven pulley. Then, the conveyor belt is rotated by the rotational driving of the driving pulley. A conveyed object such as a sintered ore is placed on the rotating conveyor belt, and the conveyed object is conveyed. At the time of such conveyance, the conveyor belt is bent at the driving pulley portion and the driven pulley portion, so that a linear bending stress is applied in the belt width direction that causes the joint rubber 3 to crack. However, in the conveyor belt of the present embodiment, since the line in the belt width direction of the joint rubber 3 provided between the wear-resistant chips 2 is formed in a zigzag shape, the bending stress in the pulley portion is nowhere in the belt. However, not only the joint rubber 3 but also the wear-resistant chip 2 is applied, so that the load on the joint rubber 3 is reduced.
In particular, since the vertex angle of the zigzag line of the joint rubber 3 is an acute angle, the linear bending stress applied to the joint rubber is further reduced. Also, wear-resistant chip
Since the gas vent holes 21 provided on the exposed surface of No. 2 are arranged in the longitudinal direction of the belt body, the bending stress linearly applied in the belt width direction is not simultaneously applied to the two gas vent holes 21, As a result, cracking of the wear-resistant chip 2 at the line connecting the two gas vent holes 21 is effectively prevented. Therefore, according to the conveyor belt of the present embodiment, the joint rubber
In addition to extremely relaxing bending stress applied to 3, the crack of the wear-resistant chip 2 can be prevented, and the penetration crack of the joint rubber 3 which has conventionally been caused by the bending of the belt at the pulley portion can be completely prevented. It has become.

Further, since cracks of the wear-resistant chip 2 do not occur, as shown in FIG. 3, when the conveyed object falls from the conveyor chute 5 to the belt 100, the possibility of the damage of the wear-resistant chip 2 due to the drop impact is reduced. Will do.

[0020]

As described above, according to the first invention of the present application, when the belt is bent by the pulley portion, the bending stress applied to the joint rubber is reduced, so that penetration cracks of the joint rubber are effectively prevented. Can be done. Further, according to the second invention of the present application, it is possible to prevent cracks at the line connecting the gas vent holes of the wear-resistant chip, and thus it is possible to effectively prevent penetration cracks of the joint rubber.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of a conveyor belt according to the present invention.

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

FIG. 3 is an explanatory diagram of a state in which a conveyed object is placed on a conveyor belt of the present embodiment.

FIG. 4 is a plan view showing a conveyor belt proposed in Japanese Utility Model Laid-Open No. 1-70606.

FIG. 5 is a sectional view taken along line BB in FIG. 4;

FIG. 6 is an explanatory diagram of a state of a pulley portion of the conveyor belt.

[Explanation of symbols]

 1,10 Belt body 2,20 Wear-resistant chip 3,30 Joint rubber 21,23 Gas vent hole

Continuation of the front page (56) References Japanese Utility Model 1-70606 (JP, U) Japanese Utility Model 1-176612 (JP, U) Japanese Utility Model 63-16653 (JP, Y2)

Claims (2)

(57) [Scope of request for utility model registration] And 1. A belt body consists of a large number of wear chips laid at predetermined intervals on the upper surface of the belt body, a joint rubber disposed between resistant milling chips said to be disposed A conveyor belt on which the wear-resistant chips are laid so that joint rubbers are all zigzag lines at least in the width direction of the belt body , wherein the wear-resistant chips
As compared to a square in which at least one pair of diagonals is acute
A conveyor belt wherein the diagonal is oriented in the longitudinal direction of the belt , and the wear-resistant chips are laid so that the apex angle of the zigzag line of the joint rubber is an acute angle. 2. A belt main body having rubber as a base, and a part of a rubber portion of the belt main body is loaded into and engaged with a hollow engaging hole provided therein, whereby the belt main body upper surface side is formed. A plurality of wear-resistant chips to be laid, and a joint rubber disposed between the wear-resistant chips, and a hollow when a part of the rubber portion is loaded into the hollow engagement hole on the exposed surface of the wear-resistant chip. In a conveyor belt provided with a plurality of gas vent holes for discharging gas from the engagement holes, the plurality of gas vent holes provided on each exposed surface of each of the wear-resistant chips are provided at least in the longitudinal direction of the belt body. A conveyor belt characterized by being arranged.