KR20240013303A - A return belt turnover device for belt conveyor - Google Patents

Abstract

The present invention is a belt conveyor provided with a plurality of pulleys spaced apart from each other, a belt wound around both pulleys, and a plurality of return rollers supporting the return side belt at the bottom to rotate the return side belt. As a return belt rotating device; At least one of the return belt rotating devices for the belt conveyor includes a guide roller unit and a pinch roller unit provided on both sides of the guide roller unit, and the pinch roller unit includes a first pinch roller 141 and a second pinch roller 143. It relates to a return belt rotating device for a belt conveyor, characterized in that it supports the belt 105 from the inside and outside.

Description

{A return belt turnover device for belt conveyor}

The present invention relates to a return belt rotating device for a belt conveyor, and more specifically, to a return belt rotating device for a belt conveyor that rotates the return side belt of a belt conveyor.

In general, a belt conveyor is used to move various raw materials stored in a yard to a distant destination. The belt conveyor is equipped with a conveyor belt through which raw materials are transported. When the belt conveyor is operated, the cargo loaded on the belt is transported by the conveyor belt and rotates while passing through the pulley installed on the head, causing the cargo to fall to the bottom. The belt circulates to the return side and moves while supported on the return side roller.

Conventional belt conveyors move with foreign substances (fine dust, fixed minerals, etc.) attached to the surface that do not fall due to their own weight, and the foreign substances separate or attach to the return roller during movement, causing the belt to meander. For example, in a belt conveyor, on the return side belt, residual conveyed material adhered to the belt causes light fall and dust to occur due to friction with the return side roller. As a result, concerns about environmental pollution increased, labor costs for collecting fallen light increased, and there were problems with belts wearing out prematurely. There was also a problem of fires occurring due to friction with the belt when falling light accumulated, and safety accidents occurred frequently due to belt meandering during operation. occurs.

In order to solve this problem, a technology is used to install a belt rotation device to rotate the return side belt (so that the outer side faces inward and the inner side faces outward) so that the return side roller contacts the inner side of the belt that is not in contact with the transported material. Although this is known, there was a problem that the pinch roller (reference numerals 10 and 11 of Patent Publication No. 10-2010-0029147) was contaminated, and in order to avoid this, there was a problem that an unbalanced load was applied to the belt on the pinch roller, and during the rotation process, There was a problem in which the rolled belt could not unfold smoothly.

Republic of Korea Registration No. 10-2109657 Registered Patent Gazette Republic of Korea Publication No. 10-2010-0076419 Open Patent Publication Republic of Korea Publication No. 10-2010-0029147 Public Patent Publication

The present invention was proposed to solve the problems of the prior art as described above. The pinch roller portion prevents an unbalanced load from acting on one side of the belt in the width direction, and the end of the side of the belt separates from the roller to keep the belt in its original state. The purpose is to provide a return belt rotation device for a belt conveyor that prevents recovery problems, can apply an external force that spreads to the rolled belt during the rotation process, and can also perform a self-aligning action.

For the above purpose, the present invention is provided with a plurality of return rollers on a belt conveyor including pulleys that are spaced apart from each other, a belt that is provided by winding the pulleys on both sides, and a plurality of return rollers that support the return side belt at the bottom. As a return belt rotating device for a belt conveyor that rotates the side belt; At least one of the return belt rotating devices for the belt conveyor includes a guide roller portion and a pinch roller portion provided on both sides of the guide roller portion, and the pinch roller portion includes a first pinch roller and a second pinch roller to extend from the inside and outside of the belt. Provides a return belt rotating device for a belt conveyor that supports.

In the above, the first pinch roller is characterized in that a spiral is formed on the surface, and the spiral is formed in opposite directions on both sides of the longitudinal direction.

In the above, the second pinch roller is characterized by a concave portion formed at the center in the longitudinal direction.

In the above, the second pinch roller is installed to contact the outer surface of the belt.

In the above, large-diameter spirals in the form of spirals are formed on both sides of the concave portion in the longitudinal direction of the second pinch roller, and the large-diameter spirals on both sides of the longitudinal direction are formed in opposite directions to each other.

In the above, the guide roller mechanism includes a roller mechanism body installed on a frame and having a through hole through which a belt passes, a plurality of first guide rollers arranged around the through hole on one side of the roller mechanism body, and the rollers. It includes a plurality of second guide rollers arranged along the through hole on the other side of the instrument body;

The roller mechanism body is characterized in that a first mechanism body and a second mechanism body having concave portions formed in opposite directions are coupled and separable by coupling means, and the concave portions on both sides formed in the opposing directions serve as through holes. .

In the above, the pinch roller unit further includes a self-aligning roller unit, and the self-aligning roller unit includes a plurality of roller units provided along the width direction of the belt, and a belt guide unit provided spaced apart from the roller unit in the belt length direction. ;

The roller unit includes a roller bracket rotatably provided on the frame and a self-aligning roller rotatable on the roller bracket;

The belt guide part is provided on both sides of the belt in the width direction and is characterized by being made of a guide member having a guide groove into which an end in the width direction of the belt is inserted.

The return belt rotating device for a belt conveyor of the present invention is provided on the belt conveyor to prevent an unbalanced load from acting on one side of the belt in the width direction by the pinch roller portion, and the external force spread on the rolled belt during the rotation acts on it to easily It can unfold. In addition, the return belt rotating device for a belt conveyor according to the present invention is disposed in the vertical direction at the center of the tension acting on the belt, so it can be installed even in places where space is limited.

1 is a schematic side view and an enlarged view showing a belt conveyor equipped with a return belt rotating device for a belt conveyor according to the present invention;
Figure 2 shows the guide roller mechanism included in the return belt rotating device for a belt conveyor of the present invention together with the conveying roller,
Figures 3 and 7 show the first pinch roller included in the return belt rotating device for a belt conveyor of the present invention together with the conveying roller,
Figures 4 and 6 show the second pinch roller included in the return belt rotating device for a belt conveyor of the present invention together with the transfer roller,
Figure 5 shows the self-aligning roller part included in the return belt rotating device for the belt conveyor of the present invention together with the conveying roller,
Figure 8 shows a modified example of the second pinch roller included in the return belt rotating device for a belt conveyor of the present invention together with the conveying roller;
Figure 9 is a plan view showing a state in which the belt is positioned above the first pinch roller.

All technical and scientific terms used in the description of the present invention, unless otherwise defined, have meanings commonly understood by those skilled in the art to which the present disclosure pertains. All terms used in this disclosure are selected for the purpose of more clearly explaining this disclosure and are not selected to limit the scope of rights according to this disclosure.

Expressions such as “comprising,” “comprising,” “having,” etc. used in the description of the present invention imply the possibility of including other embodiments, unless otherwise stated in the phrase or sentence containing the expression. It should be understood as open-ended terms.

The singular expressions used in the description of the present invention may include plural meanings unless otherwise specified, and this also applies to the singular expressions recited in the claims.

Expressions such as “first” and “second” used in the description of the present invention are used to distinguish a plurality of components from each other, and do not limit the order or importance of the components.

In the description of the invention, when a component is referred to as being “connected” or “coupled” to another component, it means that the component can be directly connected to or coupled to the other component, or as a new component. It should be understood as something that can be connected or combined through components.

Hereinafter, with reference to the attached drawings, the return belt rotating device for a belt conveyor of the present invention will be described in detail.

Figure 1 is a schematic side view and an enlarged view showing a belt conveyor equipped with a return belt rotating device for a belt conveyor according to the present invention, and Figure 2 shows a guide roller mechanism included in the return belt rotating device for a belt conveyor according to the present invention. It is shown together with the side roller, and Figures 3 and 7 show the first pinch roller included in the return belt rotating device for the belt conveyor of the present invention together with the transfer side roller, and Figures 4 and 6 show the belt conveyor of the present invention. The second pinch roller included in the return belt rotating device for a belt conveyor of the present invention is shown together with the transfer side roller, and Figure 5 shows the self-aligning roller part included in the return belt rotating device for a belt conveyor of the present invention together with the transfer side roller, Figure 8 shows a modified example of the second pinch roller included in the return belt rotating device for a belt conveyor of the present invention together with the transfer side roller, and Figure 9 shows a state in which the belt is positioned above the first pinch roller. It is a floor plan.

For convenience of explanation, in the following description, the horizontal direction of FIG. 3 will be described as the width direction, the vertical direction will be described as the up and down direction, and the extension direction of the belt 105 will be described as the longitudinal direction.

As shown in Figure 1, the return belt rotating device for a belt conveyor according to the present invention serves to rotate the belt on the return side of the belt conveyor.

In general, the belt conveyor 100 includes a frame 102 extending in the longitudinal direction on both sides of the width direction, a pulley provided spaced apart from each other in the longitudinal direction, a belt 105 provided by winding the pulleys on both sides, and a conveying side belt ( It includes a plurality of transfer rollers 104 that support the return side belt 105 from the bottom, and a plurality of return rollers 107 that support the return side belt 105 from the bottom.

The frames 102 are spaced upward from the ground, extend in the longitudinal direction, and are arranged side by side and spaced apart in the width direction. A bar-shaped frame extending downward and supported on the ground is provided at the lower part of the frame 102.

The pulley consists of a head pulley and a tail pulley. The pulleys are spaced apart from each other in the longitudinal direction and are provided on both sides of the frame 102 in the longitudinal direction. A driving unit (not shown) that rotates the pulley is connected to one of the pulleys. The driving part consists of a motor and a reducer, and is connected to the pulley by a coupling. Generally, the pulley to which the driving part is connected is called the head pulley, and the rest are called tail pulleys.

The belt 105 is provided by winding pulleys on both sides. The conveyed material is loaded and transported on the belt 105 between pulleys on both sides. The section where the conveyed material is loaded and transported is called the transfer side, and the opposite section is called the return side. The belt 105 passes through the return side between both pulleys and moves back to the delivery side.

Assuming that the belt 105 circulates in the “A” direction in FIG. 1, it passes through the tail pulley and circulates toward the return side, and passes through the head pulley toward the transfer side. For convenience, the pulley indicated by reference numeral 103 will be referred to as the second pulley, and the pulley indicated by reference numeral 101 will be referred to as the first pulley. The belt 105 circulates from the transfer side to the return side while passing the second pulley 103, and circulates from the return side to the transfer side while passing the first pulley 101. That is, the second pulley 103 is a tail pulley, and the first pulley 101 is a head pulley.

The transfer roller 104 supports the transfer side belt 105 from the lower part. The transport rollers 104 are provided in plural numbers spaced apart along the longitudinal direction of the belt 105 between the first pulley 101 and the second pulley 103. The upper part of the frame 102 is provided with a transport roller support extending in the width direction and a plurality of stand brackets spaced apart in the width direction, extending upward from the upper part of the transport roller support and spaced apart in the width direction, and the transport rollers (104) is rotatably provided on the upper part of the stand bracket.

The return roller 107 supports the return side belt 105 from the lower part. The return roller 107 is provided between the return belt rotating device for the belt conveyor according to the present invention. The return rollers 107 are provided in plural numbers and spaced apart in the longitudinal direction of the belt 105 between the return belt rotating devices for the belt conveyor provided on both sides. A bracket extending inward in the width direction and bent upward is provided at the lower part of the frame 102, and the return roller 107 is supported on the bracket and rotatable.

Hereinafter, on the return side of the belt 105, the second pulley 103 side is described as upstream, and the first pulley 101 side is described as downstream.

The return belt rotating device for a belt conveyor (hereinafter referred to as 'return belt rotating device') according to the present invention is provided on the upstream and downstream sides of the return side of the belt 105. The upstream return belt rotating device 110 provided on the upstream side is located between the return roller 107 located on the most upstream side and the second pulley 103, and the downstream return belt rotating device provided on the downstream side ( 150) is located between the return roller 107 located at the most downstream side and the first pulley 101.

The upstream return belt rotating device 110 includes a guide roller unit 120-1 and an upstream first pinch roller unit provided on the upstream side of the guide roller unit 120-1 on the return side of the belt 105 ( 130) and an upstream second pinch roller unit 140-1 provided on the downstream side of the guide roller unit 120-1.

The guide roller unit 120-1 consists of a plurality of guide roller mechanisms 120-1a. The guide roller unit 120-1 consists of two guide roller mechanisms 120-1a. The two guide roller mechanisms 120-1a are provided spaced apart along the longitudinal direction between the upstream first pinch roller unit 130 and the upstream second pinch roller unit 140-1.

As shown in FIG. 2, the guide roller mechanism 120-1a includes a roller mechanism body 121, a first guide roller 123, and a second guide roller 125.

The roller mechanism body 121 is provided in a plate shape. The roller mechanism body 121 is installed on the frame 102 and is formed with a through hole 1211 through which the belt 105 passes. The roller mechanism body 121 is composed of a first mechanism body 121a that is rectangular and has a concave portion formed in the lower portion, and a second mechanism body 121b that is rectangular and has a concave portion formed in the upper portion.

The upper part of the first mechanism body 121a is coupled to the frame 102. The roller mechanism body 121 is provided with flanges 122 on both sides of the concave portions of the first mechanism body 121a and the second mechanism body 121b, and the flanges 122 are fastened with a coupling means such as a bolt. The first mechanism body (121a) and the second instrument body (121b) are combined.

The roller mechanism body 121 is made up of a first mechanism body 121a and a second mechanism body 121b, each of which has a concave portion formed in a direction facing each other, and is coupled to the flange 122 by means of a coupling means, so that the opposite sides of the roller mechanism body 121 can be separated. Concave portions on both sides formed in the direction become through holes 1211. Since the roller mechanism body 121 is detachable, the guide roller mechanism 120-1a can be installed without cutting the belt 105.

The first guide roller 123 is provided in plural numbers arranged around the through hole 1211 on one side of the roller mechanism body 121. The first guide roller 123 is rotatably coupled to the roller mechanism body 121 via a roller bracket 124. Four first guide rollers 123 are provided around the through hole 1211. The first guide rollers 123 are provided at equal intervals from each other along the periphery of the through hole 1211.

The second guide roller 125 is arranged on the other side of the roller mechanism body 121 around the through hole 1211 and is provided in plural numbers. The first guide roller 125 is coupled to the roller mechanism body 121 via a roller bracket 126 and is rotatable. Four second guide rollers 125 are provided around the through hole 1211. The second guide rollers 125 are provided at equal intervals around the through hole 1211. The second guide roller 125 is provided at a position offset from the first guide roller 123.

In the above, the first guide roller 123 and the second guide roller 125 may be provided in the range of 3 to 6, respectively, around the through hole 1211.

The upstream first pinch roller unit 130 is provided to be spaced upstream from the guide roller mechanism 120-1a located upstream from the return side of the belt 105.

The upstream first pinch roller unit 130 includes a first roller 135. The first roller 135 is provided to be spaced apart from the second pulley 103 in the downstream direction on the return side. The first roller 135 is provided in contact with the outer surface of the return side belt 105. Hereinafter, the surface of the belt 105 on which the conveyed object is transported (the surface with the transported object) is referred to as the outer surface, and the opposite side is referred to as the inner surface. The first roller 135 is provided with a bracket extending to the lower part of the frame 102, and the first roller 135 is rotatably provided on the bracket.

The upstream first pinch roller unit 130 may further include a self-aligning roller unit 145 on the downstream side of the first roller 135.

The self-aligning roller unit 145 includes a roller unit 1453 and a belt guide unit 1451. The self-aligning roller unit 145 is located on the inner surface of the belt 105 at the top of the belt 105.

The roller units 1453 are provided in plural numbers along the width direction of the belt 105. There are three roller units 1453. The roller unit 1453 is It includes a roller bracket 14531 rotatably provided on the frame 102 and a self-aligning roller 14533 rotatably provided on the roller bracket 14531. The roller bracket 14531 is rotatably inserted into the frame 102 using a bracket pin 14532 so as to be rotatable in the frame 102.

The belt guide portion 1451 is provided on both sides of the belt 105 in the width direction. The belt guide unit 1451 is provided to be spaced apart from the roller unit 1453 in the longitudinal direction of the belt 105. The belt guide unit 1451 is located between the roller unit 1453 and the first roller 135. The belt guide unit 1451 may be located downstream of the roller unit 1453. The belt guide portion 1451 consists of a guide member 14535 in which a guide groove 14537 is inserted into which the width direction end of the belt 105 is inserted. The belt guide unit 1451 may be further provided with a guide roller 14539 that rotates by contacting the end of the belt 105 inside the guide groove 14537 of the guide member 14535.

The upstream first pinch roller unit 130 prevents an unbalanced load from acting on one side of the belt 105 in the width direction.

The upstream first pinch roller unit 130 is composed of a first pinch roller 141 and a second pinch roller 143, like the upstream second pinch roller unit 140-1 to be described below, and is a self-aligning roller. It may also include a unit 145.

The upstream second pinch roller unit 140-1 is provided to be spaced downstream from the guide roller mechanism 120-1a located on the downstream side. At this time, the surface of the belt 105 that has passed through the guide roller mechanism 120-1a is transferred upward with the surface on which the conveyed material is applied.

The upstream second pinch roller unit 140-1 includes a first pinch roller 141 and a second pinch roller 143.

As shown in FIG. 3, the first pinch roller 141 is provided with a bracket extending to the lower part of the frame 102, and the first pinch roller 141 is rotatably provided on the bracket. The first pinch roller 141 is located below the return side belt 105 and is provided in contact with the inner surface of the return side belt 105. As shown in FIG. 9, a spiral 1411 is formed on the surface of the first pinch roller 141 along its longitudinal direction. The spirals 1411 are formed in opposite directions at the center of the first pinch roller 141. The spirals 1411 are formed in opposite directions on both sides of the first pinch roller 141 in the longitudinal direction. The spiral 1411 may be formed as a concave groove or as a protrusion.

upstream The spiral 1411 formed on the surface of the first pinch roller 141 located downstream of the guide roller unit 120-1 is the first pinch roller 141 when the belt 105 moves in the “A” direction in FIG. 9. ) is rotated in the “B” direction, the spiral 1411 is in contact with the belt 105, and an external force is applied in the “C” direction in which the belt 105 faces outward in the width direction, so that the belt 105 is spread. On the first pinch roller 141, the belt 105 is in contact with the surface of the first pinch roller 141, and when the first pinch roller 141 rotates, an external force is applied in the width direction by the spiral 1411 to form a belt ( 105) unfolds in the width direction.

As shown in FIG. 4, the second pinch roller 143 is provided downstream of the first pinch roller 141. The second pinch roller 143 extends inward in the width direction from the lower part of the frame 102 and is provided with an upwardly bent bracket, so that the second pinch roller 143 is rotatable on the bracket. The second pinch roller 143 is located at the upper part of the return side belt 105 and is provided in contact with the outer surface of the return side belt 105. The second pinch roller 143 has a concave portion 1431 formed at its longitudinal center and contacts the belt 105 on both sides in the width direction.

The second pinch roller 143 has a larger diameter portion 1433 on both sides in the longitudinal direction, which has a larger diameter than the concave portion 1431 and is in contact with both sides in the width direction of the belt 105. The ends on both sides of the belt 105 in the width direction are areas where conveyed materials are not loaded, and thus no transported materials remain.

Inside the large diameter portion 1433, a plurality of inclined roller ribs 1435 are provided in the concave portion 1431 and spaced apart from each other in the circumferential direction. The roller rib 1435 is such that the belt 105 is not located in the center of the second pinch roller 143, so even if one end in the width direction is located in the concave portion 1431, the belt 105 is located in the concave portion 1431. One end of the comes up to the large diameter part (1433) on the roller rib (1435).

A concave portion 1431 is formed in the second pinch roller 143, and the large diameter portion 1433 of the second pinch roller 143 contacts and supports both ends in the width direction of the belt 105, so that the second pinch roller 143 The roller 143 is not contaminated with conveyed material.

As shown in FIG. 8, a large-diameter helix 1437 in the form of a spiral may be formed on the outer diameter surface of the large-diameter portion 1433 of the second pinch roller 143 along the longitudinal direction. The large-diameter spirals 1437 are formed in opposite directions on both sides of the second pinch roller 143 in the longitudinal direction. The large-diameter helix 1437 is formed in the form of a protrusion, and the outer diameter of the large-diameter helix 1437 is equal to or larger than the outer diameter of the roller rib 1435.

The large-diameter helix 1437 formed on the large-diameter portion 1433 of the second pinch roller 143 is formed so that an external force acts in an outward direction in the width direction in which the belt 105 is spread. On the second pinch roller 143, the belt 105 is in contact with the large diameter portion 1433 of the second pinch roller 143, and when the second pinch roller 143 rotates, it moves in the width direction by the large diameter portion spiral 1437. An external force acts to spread the belt 105 in the width direction. The large-diameter helix 1437 acts to spread the belt 105 in the width direction, as described with reference to FIG. 9.

The upstream second pinch roller unit 140-1 further includes a self-aligning roller unit 145 on the downstream side of the second pinch roller 143.

The self-aligning roller unit 145 includes a roller unit 1453 and a belt guide unit 1451. The self-aligning roller unit 145 is provided at the lower part of the belt 105.

The roller units 1453 are provided in plural numbers along the width direction of the belt 105. There are three roller units 1453. The roller unit 1453 is It includes a roller bracket 14531 rotatably provided on the frame 102 and a self-aligning roller 14533 rotatably provided on the roller bracket 14531. The roller bracket 14531 is rotatably inserted into the frame 102 using a bracket pin 14532 so as to be rotatable in the frame 102.

The belt guide portion 1451 is provided on both sides of the belt 105 in the width direction. The belt guide unit 1451 is provided to be spaced apart from the roller unit 1453 in the longitudinal direction of the belt 105. The belt guide unit 1451 is located between the roller unit 1453 and the second pinch roller 143. The belt guide unit 1451 may be located downstream of the roller unit 1453. The belt guide portion 1451 consists of a guide member 14535 in which a guide groove 14537 is inserted into which the width direction end of the belt 105 is inserted. The belt guide unit 1451 may be further provided with a guide roller 14539 that rotates by contacting the end of the belt 105 inside the guide groove 14537 of the guide member 14535.

The upstream second pinch roller unit 140-1 prevents an unbalanced load from acting on one side of the belt 105 in the width direction, and the external force that spreads the rolled belt 105 during the rotation process acts on it to easily unfold it. You can.

The downstream return belt rotating device 150 includes a guide roller unit 120-2 and a downstream first pinch roller unit provided on the upstream side of the guide roller unit 120-2 on the return side of the belt 105 ( 140-2) and a downstream second pinch roller unit 140-3 provided on the downstream side of the guide roller unit 120-2.

The guide roller unit 120-2 consists of a plurality of guide roller mechanisms 120-2a. The guide roller unit 120-2 consists of two guide roller mechanisms 120-2a. The two guide roller mechanisms 120-2a are provided spaced apart along the longitudinal direction between the downstream first pinch roller part 140-2 and the downstream second pinch roller part 140-3. The guide roller mechanism 120-2a includes a roller mechanism body 121, a first guide roller 123, and a second guide roller 125.

As shown in Figure 2, the roller mechanism body 121 is provided in a plate shape. The roller mechanism body 121 is installed on the frame 102 and is formed with a through hole 1211 through which the belt 105 passes. The roller mechanism body 121 is composed of a first mechanism body 121a that is rectangular and has a concave portion formed in the lower portion, and a second mechanism body 121b that is rectangular and has a concave portion formed in the upper portion.

The upper part of the first mechanism body 121a is coupled to the frame 102. The roller mechanism body 121 is provided with flanges 122 on both sides of the concave portions of the first mechanism body 121a and the second mechanism body 121b, and the flanges 122 are fastened with a coupling means such as a bolt. The first mechanism body (121a) and the second mechanism body (121b) are combined.

The roller mechanism body 121 is made up of a first mechanism body 121a and a second mechanism body 121b, each of which has a concave portion formed in a direction facing each other, and is coupled to the flange 122 by means of a coupling means, so that the opposite sides of the roller mechanism body 121 can be separated. Concave portions on both sides formed in the direction become through holes 1211. Since the roller mechanism body 121 is detachable, the guide roller mechanism 120-1a can be installed without cutting the belt 105.

The first guide roller 123 is provided in plural numbers arranged around the through hole 1211 on one side of the roller mechanism body 121. The first guide roller 123 is rotatably coupled to the roller mechanism body 121 via a roller bracket 124. Four first guide rollers 123 are provided around the through hole 1211. The first guide rollers 123 are provided at equal intervals around the through hole 1211.

The second guide roller 125 is arranged on the other side of the roller mechanism body 121 around the through hole 1211 and is provided in plural numbers. The first guide roller 125 is rotatably coupled to the roller mechanism body 121 via a roller bracket 126. Four second guide rollers 125 are provided around the through hole 1211. The second guide rollers 125 are provided at equal intervals around the through hole 1211. The second guide roller 125 is provided at a position offset from the first guide roller 123.

The downstream first pinch roller unit 140-2 is provided to be spaced upstream from the roller mechanism body 120-2a located on the upstream side. At this time, the belt 105 is transported with the surface on which the conveyed material is applied upward.

The downstream first pinch roller unit 140-2 includes a first pinch roller 141 and a second pinch roller 143.

As shown in FIG. 3, the first pinch roller 141 is provided with a bracket extending to the lower part of the frame 102, and the first pinch roller 141 is rotatably provided on the bracket. The first pinch roller 141 is located below the return side belt 105 and is provided in contact with the inner surface of the return side belt 105. A spiral 1411 is formed on the surface of the first pinch roller 141 along its longitudinal direction. The spirals 1411 are formed in opposite directions at the center of the first pinch roller 141. The spirals 1411 are formed in opposite directions on both sides of the first pinch roller 141 in the longitudinal direction. The spiral 1411 may be formed as a concave groove or as a protrusion.

The spiral 1411 formed on the surface of the first pinch roller 141 located upstream of the downstream guide roller mechanism 120-2 is formed so that an external force acts in the outward direction in the width direction in which the belt 105 is spread. . The spiral 1411 formed on the surface of the first pinch roller 141 causes the first pinch roller 141 to rotate in the “B” direction when the belt 105 moves in the “A” direction in FIG. 9, and the spiral 1411 is in contact with the belt 105, and an external force is applied in the “C” direction, in which the belt 105 faces outward in the width direction, so that the belt 105 is spread. On the first pinch roller 141, the belt 105 is in contact with the surface of the first pinch roller 141, and when the first pinch roller 141 rotates, an external force is applied in the width direction by the spiral 1411 to form a belt ( 105) unfolds in the width direction.

As shown in FIG. 4, the second pinch roller 143 is provided upstream of the first pinch roller 141. The second pinch roller 143 extends inward in the width direction from the lower part of the frame 102 and is provided with an upwardly bent bracket, so that the second pinch roller 143 is rotatable on the bracket. The second pinch roller 143 is located at the upper part of the return side belt 105 and is provided in contact with the outer surface of the return side belt 105. The second pinch roller 143 has a concave portion 1431 formed at its longitudinal center and contacts the belt 105 on both sides in the width direction.

The second pinch roller 143 has a larger diameter portion 1433 on both sides in the longitudinal direction, which has a larger diameter than the concave portion 1431 and is in contact with both sides in the width direction of the belt 105. The ends on both sides of the belt 105 in the width direction are areas where conveyed materials are not loaded, and thus no transported materials remain.

Inside the large diameter portion 1433, a plurality of inclined roller ribs 1435 are provided in the concave portion 1431 and spaced apart from each other in the circumferential direction. The roller rib 1435 is such that the belt 105 is not located in the center of the second pinch roller 143, so even if one end in the width direction is located in the concave portion 1431, the belt 105 is located in the concave portion 1431. One end of the comes up to the large diameter part (1433) on the roller rib (1435).

A concave portion 1431 is formed in the second pinch roller 143, and the large diameter portion 1433 of the second pinch roller 143 contacts and supports both ends in the width direction of the belt 105, so that the second pinch roller 143 The roller 143 is not contaminated with conveyed material.

As shown in FIG. 8, a large-diameter helix 1437 in the form of a spiral along the longitudinal direction may be formed on the outer diameter surface of the large-diameter portion 1433 of the second pinch roller 143. The large-diameter spirals 1437 are formed in opposite directions on both sides of the second pinch roller 143 in the longitudinal direction. The large-diameter helix 1437 is formed in the form of a protrusion, and the outer diameter of the large-diameter helix 1437 is equal to or larger than the outer diameter of the roller rib 1435.

The large-diameter helix 1437 formed on the large-diameter portion 1433 of the second pinch roller 143 is formed so that an external force acts in an outward direction in the width direction in which the belt 105 is spread. On the second pinch roller 143, the belt 105 is in contact with the large diameter portion 1433 of the second pinch roller 143, and when the second pinch roller 143 rotates, it moves in the width direction by the large diameter portion spiral 1437. An external force acts to spread the belt 105 in the width direction.

The downstream first pinch roller unit 140-2 further includes a self-aligning roller unit 145 on the upstream side of the second pinch roller 143.

The self-aligning roller unit 145 includes a roller unit 1453 and a belt guide unit 1451. The self-aligning roller unit 145 is provided at the lower part of the belt 105.

The roller units 1453 are provided in plural numbers along the width direction of the belt 105. There are three roller units 1453. The roller unit 1453 is It includes a roller bracket 14531 rotatably provided on the frame 102 and a self-aligning roller 14533 rotatably provided on the roller bracket 14531. The roller bracket 14531 is rotatably inserted into the frame 102 using a bracket pin 14532 so as to be rotatable in the frame 102.

The belt guide portion 1451 is provided on both sides of the belt 105 in the width direction. The belt guide unit 1451 is provided to be spaced apart from the roller unit 1453 in the longitudinal direction of the belt 105. The belt guide unit 1451 is located upstream of the roller unit 1453. The belt guide unit 1451 may be located between the roller unit 1453 and the second pinch roller 143 on the downstream side of the roller unit 1453. The belt guide portion 1451 consists of a guide member 14535 in which a guide groove 14537 is inserted into which the width direction end of the belt 105 is inserted. The belt guide unit 1451 may be further provided with a guide roller 14539 that rotates by contacting the end of the belt 105 inside the guide groove 14537 of the guide member 14535.

The downstream first pinch roller unit 140-2 prevents an unbalanced load from acting on one side of the belt 105 in the width direction.

The downstream second pinch roller unit 140-3 is provided to be spaced downstream from the roller mechanism body 120-2a located on the downstream side. At this time, the belt 105 is transported with the surface on which the conveyed material is applied downward.

The downstream second pinch roller unit 140-3 includes a first pinch roller 141 and a second pinch roller 143.

As shown in FIG. 7, the first pinch roller 141 is provided with a bracket extending to the lower part of the frame 102, and the first pinch roller 141 is rotatably provided on the bracket. The first pinch roller 141 is located at the upper part of the return side belt 105 and is provided in contact with the inner surface of the return side belt 105. A spiral 1411 is formed on the surface of the first pinch roller 141 along its longitudinal direction. The spirals 1411 are formed in opposite directions at the center of the first pinch roller 141. The spirals 1411 are formed in opposite directions on both sides of the first pinch roller 141 in the longitudinal direction. The spiral 1411 may be formed as a concave groove or as a protrusion.

The spiral 1411 formed on the surface of the first pinch roller 141 located downstream of the downstream guide roller mechanism 120-2 is formed so that an external force acts in an outward direction in the width direction in which the belt 105 is spread. . In FIG. 9, if the belt 105 is located below the pinch roller 141, the spiral 1411 formed on the surface of the first pinch roller 141 is the first spiral 1411 when the belt 105 moves in the “A” direction. The pinch roller 141 rotates in the opposite direction to the “B” direction, the spiral 1411 is in contact with the belt 105, and an external force is applied in the “C” direction in which the belt 105 faces outward in the width direction, causing the belt 105 to unfold. It is formed as follows. On the first pinch roller 141, the belt 105 is in contact with the surface of the first pinch roller 141, and when the first pinch roller 141 rotates, an external force is applied in the width direction by the spiral 1411 to form a belt ( 105) unfolds in the width direction.

As shown in FIG. 6, the second pinch roller 143 is provided upstream of the first pinch roller 141. The second pinch roller 143 is provided with a bracket extending downward from the lower part of the frame 102, and the second pinch roller 143 is rotatably provided on the bracket. The second pinch roller 143 is located below the return side belt 105 and is provided in contact with the outer surface of the return side belt 105. The second pinch roller 143 has a concave portion 1431 formed at its longitudinal center and contacts the belt 105 on both sides in the width direction.

The second pinch roller 143 has a larger diameter portion 1433 on both sides in the longitudinal direction, which has a larger diameter than the concave portion 1431 and is in contact with both sides in the width direction of the belt 105. The ends on both sides of the belt 105 in the width direction are areas where conveyed materials are not loaded, and thus no transported materials remain.

Inside the large diameter portion 1433, a plurality of inclined roller ribs 1435 are provided in the concave portion 1431 and spaced apart from each other in the circumferential direction. The roller rib 1435 is such that the belt 105 is not located in the center of the second pinch roller 143, so even if one end in the width direction is located in the concave portion 1431, the belt 105 is located in the concave portion 1431. One end of the comes up to the large diameter part (1433) on the roller rib (1435).

A concave portion 1431 is formed in the second pinch roller 143, and the large diameter portion 1433 of the second pinch roller 143 contacts and supports both ends in the width direction of the belt 105, so that the second pinch roller 143 The roller 143 is not contaminated with conveyed material.

As shown in FIG. 8, a large-diameter helix 1437 in the form of a spiral along the longitudinal direction may be formed on the outer diameter surface of the large-diameter portion 1433 of the second pinch roller 143. The large-diameter spirals 1437 are formed in opposite directions on both sides of the second pinch roller 143 in the longitudinal direction. The large-diameter helix 1437 is formed in the form of a protrusion, and the outer diameter of the large-diameter helix 1437 is equal to or larger than the outer diameter of the roller rib 1435.

The large-diameter helix 1437 formed on the large-diameter portion 1433 of the second pinch roller 143 is formed so that an external force acts in an outward direction in the width direction in which the belt 105 is spread. On the second pinch roller 143, the belt 105 is in contact with the large diameter portion 1433 of the second pinch roller 143, and when the second pinch roller 143 rotates, it moves in the width direction by the large diameter portion spiral 1437. An external force acts to spread the belt 105 in the width direction.

The downstream second pinch roller unit 140-3 further includes a self-aligning roller unit 145 on the downstream side of the first pinch roller 141.

The self-aligning roller unit 145 includes a roller unit 1453 and a belt guide unit 1451. The self-aligning roller unit 145 is provided at the upper part of the belt 105.

The roller units 1453 are provided in plural numbers along the width direction of the belt 105. There are three roller units 1453. The roller unit 1453 is It includes a roller bracket 14531 rotatably provided on the frame 102 and a self-aligning roller 14533 rotatably provided on the roller bracket 14531. The roller bracket 14531 is rotatably inserted into the frame 102 using a bracket pin 14532 so as to be rotatable in the frame 102.

The belt guide portion 1451 is provided on both sides of the belt 105 in the width direction. The belt guide unit 1451 is provided to be spaced apart from the roller unit 1453 in the longitudinal direction of the belt 105. The belt guide unit 1451 is located between the roller unit 1453 and the first pinch roller 141. The belt guide unit 1451 may be located between the roller unit 1453 and the first pulley 101 on the downstream side of the roller unit 1453. The belt guide portion 1451 consists of a guide member 14535 in which a guide groove 14537 is inserted into which the width direction end of the belt 105 is inserted. The belt guide unit 1451 may be further provided with a guide roller 14539 that rotates by contacting the end of the belt 105 inside the guide groove 14537 of the guide member 14535.

The downstream second pinch roller unit 140-3 prevents an unbalanced load from acting on one side of the belt 105 in the width direction, and the external force that spreads the rolled belt 105 during the rotation process acts on it to easily unfold it. You can.

Below, the positions of the outer surface, which is the surface on which the conveyed material remains, of the return side belt 105, and the inner surface, which is the opposite surface, are summarized. The upstream first pinch roller unit 130 located upstream of the upstream guide roller unit 120-1 ), the first roller 135 is provided to contact the outer surface of the belt 105 and support it at the lower part of the belt 105, and the self-aligning roller unit 145 is provided to contact the inner surface of the belt 105. do.

The belt 105 that has passed the upstream first pinch roller unit 130 passes through the guide roller mechanism 120-1a of the upstream guide roller unit 120-1, and the belt 105 is rolled. The inner and outer sides are rotated so that the outer surface of the belt 105 with the conveyed material on it moves upward, and the inner surface moves downward.

In the upstream second pinch roller unit (140-1) located downstream of the upstream guide roller unit (120-1), the second pinch roller (143) is located at the upper part of the return side belt (105) and is located at the upper part of the belt (105) on the return side. ), and the first pinch roller 141 and the self-aligning roller unit 145 are provided to contact the inner surface of the belt 105 and support it at the lower part of the belt 105.

In the downstream first pinch roller unit (140-2) located upstream of the downstream guide roller unit (120-2), the second pinch roller (143) is located at the upper part of the return side belt (105) and is located at the upper part of the belt (105) on the return side. ), and the first pinch roller 141 and the self-aligning roller unit 145 are provided to contact the inner surface of the belt 105 and support it at the lower part of the belt 105.

The belt 105 that has passed the downstream first pinch roller unit 140-2 passes through the guide roller mechanism 120-2a of the downstream guide roller unit 120-2, and the belt 105 is rolled. ) is rotated so that the outer surface of the belt 105 with the conveyed material on it moves downward and the inner surface moves upward.

In the downstream second pinch roller unit (140-3) located downstream of the downstream guide roller unit (120-2), the second pinch roller (143) contacts the outer surface of the belt (105) to It is provided to support from the lower part, and the first pinch roller 141 and the self-aligning roller unit 145 are provided in contact with the inner surface of the belt 105.

As described above, the return belt rotating device for the belt conveyor of the present invention is installed so that the belt conveyor 100 is rotated so that the outer surface of the return side belt faces inward and the inner surface faces outward, so that the return side roller and pinch roller portion do not contact the conveyed material. Contamination is prevented, and the pinch roller part is made in the form of a first pinch roller 141 and a second pinch roller 143, so that eccentricity of the belt 105 is prevented and the first and second pinch rollers 141 and 143 are used. contamination is prevented.

100: Belt conveyor
101: first pulley 102: frame
103: Second pulley 104: Transport side roller
105: Belt 107: Return side roller
110: Upstream return belt rotating device 130: Upstream first pinch roller unit
150: Downstream return belt rotating device

Claims (7)

A return belt rotating device for a belt conveyor that is provided with a plurality of pulleys spaced apart from each other, a belt provided by winding both pulleys, and a return roller that supports the return side belt at the bottom and rotates the return side belt. as;
At least one of the return belt rotating devices for the belt conveyor includes a guide roller unit and a pinch roller unit provided on both sides of the guide roller unit, and the pinch roller unit includes a first pinch roller 141 and a second pinch roller 143. A return belt rotating device for a belt conveyor, characterized in that it supports the belt (105) from the inside and outside. The rotating return belt for a belt conveyor according to claim 1, wherein the first pinch roller 141 has a spiral 1411 formed on its surface, and the spiral 1411 is formed in opposite directions on both sides of the longitudinal direction. Device. The return belt rotating device for a belt conveyor according to claim 1, wherein the second pinch roller (143) has a concave portion (1431) formed at its longitudinal center. The return belt rotating device for a belt conveyor according to claim 3, wherein the second pinch roller (143) is installed to contact the outer surface of the belt (105). The method of claim 3, wherein the second pinch roller 143 is formed with a large-diameter helix 1437 in the form of a spiral on both sides of the concave portion 1431 in the longitudinal direction, and the large-diameter helix 1437 is formed on both sides of the concave portion 1431 in the longitudinal direction. is a return belt rotating device for a belt conveyor, characterized in that it is formed in opposite directions. According to claim 1, wherein the guide roller mechanism is installed on the frame (102) and has a roller mechanism body (121) formed with a through hole (1211) through which the belt (105) passes, and one side of the roller mechanism body (121) a plurality of first guide rollers 123 arranged around the through hole 1211, and a plurality of first guide rollers 123 arranged around the through hole 1211 on the other side of the roller mechanism body 121. Includes 2 guide rollers (125);
The roller mechanism body 121 includes a first mechanism body 121a and a second mechanism body 121b, each of which has a concave portion formed in a direction facing each other, coupled with a coupling means and is separable. A return belt rotating device for a belt conveyor, characterized in that the concave portion becomes a through hole (1211). The method of claim 1, wherein the pinch roller unit further includes a self-aligning roller unit 145, and the self-aligning roller unit 145 includes a plurality of roller units 1453 provided along the width direction of the belt 105, and , including a belt guide portion 1451 that is provided to be spaced apart from the roller portion 1453 in the longitudinal direction of the belt 105;
The roller unit 1453 includes a roller bracket 14531 rotatably provided on the frame 102 and a self-aligning roller 14533 rotatable on the roller bracket 14531;
The belt guide portion 1451 is provided on both sides of the belt 105 in the width direction, and is composed of a guide member 14535 having a guide groove 14537 into which the width direction end of the belt 105 is inserted. Return belt rotating device for conveyors.

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