Belt conveying structure with circular groove-shaped section and belt conveyor

Abstract

The utility model relates to the technical field of belt conveyors, in particular to a belt conveying structure with a circular groove-shaped section and a belt conveyor, comprising a bearing section and a return section which are connected in sequence, the bearing section and the return stroke section are the same in structure. The bearing section comprises a conveying belt with an arc-shaped section and an opening, and a plurality of carrier roller sets arranged on the outer side of the conveying belt and matched with the conveying belt in a transmission mode. The carrier roller set comprises a bottom carrier roller located at the bottom of the outer side face of the conveying belt and tangent to the conveying belt, and side carrier roller sets symmetrically arranged on the two sides of the bottom carrier roller and tangent to the outer side face of the conveying belt. Each side carrier roller set comprises two side rollers tangent to the outer side face of the conveying belt. When the horizontal turning section is used as the horizontal turning section, the contact force proportion of the conveying belt and the carrier roller set on the inner side of the curve is increased, the friction force of the conveying belt and the carrier rollers is increased, and the sliding tendency of the edge of the conveying belt towards the direction of the stop rollers is reduced, so that the conveying belt reaches a balanced state under the constraint of the carrier rollers under the condition of a small turning radius, and stable operation is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyors, and more specifically, to a belt conveyor structure with a circular groove section and a belt conveyor. Background Art

[0002] Belt conveyor is one of the most important material conveying equipment at present, which can realize continuous conveying of materials.

[0003] Traditional belt conveyors generally support the conveyor belt through three rollers, making the conveyor belt present a trapezoidal cross-section trough, through which materials are carried and transported. If the conveying line has a horizontal curve, the roller group needs to be raised on the inside of the curve to balance the centripetal force of the conveyor belt and reduce the tendency of the conveyor belt to move inward. At the same time, the inner guard roller is used to limit the slippage of the conveyor belt. The smaller the curve radius, the greater the tendency of the conveyor belt to slide inward, the greater the lifting angle of the roller, and the greater the load on the inner guard roller. Due to the restriction of the trapezoidal cross-section, the lifting angle is generally controlled below 7°. Too large a lifting angle will cause material to be scattered, affecting the normal operation of the conveyor. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a belt conveyor structure and a belt conveyor with a circular groove section;

[0005] The solution adopted by the utility model to solve the technical problem is:

[0006] A belt conveyor structure with a circular groove cross section, comprising a load-bearing section and a return section connected in sequence; the load-bearing section and the return section have the same structure;

[0007] The bearing section includes a conveyor belt with an arc-shaped cross section and an opening, and a plurality of roller groups arranged on the outside of the conveyor belt and drivingly matched with the conveyor belt;

[0008] Each group of the rollers comprises a bottom roller located at the bottom of the outer side of the conveyor belt and tangent to the conveyor belt, and a side roller group symmetrically arranged on both sides of the bottom roller and tangent to the outer side of the conveyor belt respectively;

[0009] Each group of side rollers includes two groups of side rollers which are respectively tangent to the outer side surface of the conveyor belt.

[0010] In some possible implementations, the two groups of side rollers cooperate with each other at the sides away from the bottom roller to form an inlet that is arranged corresponding to and connected to the opening;

[0011] The bottom roller and the four groups of side rollers cooperate with each other to form a groove, and the conveyor belt is located in the groove.

[0012] In some possible embodiments, when the load-bearing section and the return section are connected to form a horizontal curve, a stop roller is provided at the top of each group of side rollers close to the center of the horizontal curve, and the bottom of the stop roller abuts against the side of the conveyor belt close to each other.

[0013] In some possible embodiments, the side roller group includes a middle roller tangent to the outer side of the conveyor belt and a top roller located on the side of the middle roller away from the bottom roller; the retaining roller is arranged at one end of the top roller away from the middle roller.

[0014] In some possible implementations, the center angle of the arc formed by the cross section of the conveyor belt is θ, and 270°≥θ≥230°.

[0015] In some possible implementations, when the load-bearing section and the return section are connected to form a horizontal straight section, the axes of the bottom rollers in the load-bearing section and the return section in the long direction are arranged horizontally, and the openings face upward.

[0016] In some possible implementations, the roller group rotates around its axial direction away from the center of the horizontal curved segment;

[0017] Wherein, in the bearing section, the angle A1 formed between the bottom roller and the horizontal plane after rotation;

[0018] In the return section, the bottom roller forms an angle A2 with the horizontal plane after rotation, and A2>A1.

[0019] In some possible implementations, in the horizontal curve and as a load-bearing section, 15°≥A1≥7°.

[0020] In some possible implementations, in the horizontal curve and as a return segment, 25°≥A2>15°.

[0021] A belt conveyor comprises the above-mentioned belt conveying structure with a circular groove section.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The utility model cooperates with the conveyor belt with an arc-shaped cross section through the side roller group, the bottom roller, the retaining roller, and the conveyor belt. When used as a horizontal turning section, the contact force ratio between the conveyor belt and the side roller group is increased, the friction force of the conveyor belt is increased, and the sliding tendency of the conveyor belt edge toward the retaining roller is reduced, so that the conveyor belt reaches a balanced state under the constraint of the roller under a small turning radius, and the conveyor can run smoothly.

[0024] The utility model can effectively make the sliding direction of the conveyor belt edge deviate from the direction of the centripetal force in the horizontal turning section, change the sliding direction of the conveyor belt edge, and more easily meet the force balance condition under the condition of a small turning radius, greatly reducing the difficulty of arranging the belt conveyor under the condition of a small turning radius;

[0025] The utility model has the same structure of the load-bearing section and the return section in the horizontal turning section, both of which adopt five groups of rollers and a conveying composition with an arc-shaped cross-section; compared with the traditional belt conveyor, the adjustment difficulty of the curved return section is sometimes greater than that of the load-bearing section. The utility model makes the adjustment simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the belt conveyor structure in the utility model when the belt conveyor structure is located in a horizontal straight section as a load-bearing section;

[0027] Figure 2 It is a structural schematic diagram of the belt conveyor structure in the utility model when the belt conveyor structure is located in a horizontal straight section as a return section;

[0028] Figure 3 It is a structural schematic diagram of the belt conveyor structure in the utility model when the belt conveyor structure is located in a horizontal curved section as a load-bearing section;

[0029] Figure 4 It is a structural schematic diagram of the belt conveyor structure in the utility model when the belt conveyor structure is located in a horizontal curved section as a return section;

[0030] Among them: 1. Bottom roller; 2. Middle roller; 3. Top roller; 4. Conveyor belt; 5. Guard roller; 6. Material. DETAILED DESCRIPTION

[0031] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. The "first", "second" and similar words mentioned in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "one" and other similar words do not indicate a quantity limit, but indicate the existence of at least one. In the implementation of this application, "and / or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and / or B can indicate: A exists alone, A and B exist at the same time, and B exists alone. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more. For example, multiple positioning columns refer to two or more positioning columns. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0032] The utility model is described in detail below.

[0033] like Figure 1-Figure 4 As shown; a belt conveyor structure with a circular groove section, comprising a load-bearing section and a return section connected in sequence; the load-bearing section has the same structure as the return section;

[0034] The bearing section includes a conveyor belt 4 having an arc-shaped cross section and an opening, and a plurality of roller groups arranged outside the conveyor belt 4 and drivingly matched with the conveyor belt 4; the plurality of roller groups are arranged in sequence along the axial direction of the conveyor belt 4;

[0035] Each group of the rollers comprises a bottom roller 1 located at the bottom of the outer side of the conveyor belt 4 and tangent to the conveyor belt 4, and a side roller group symmetrically arranged on both sides of the bottom roller 1 and tangent to the outer side of the conveyor belt 4 respectively;

[0036] Each set of side rollers includes two sets of side rollers that are tangent to the outer side of the conveyor belt 4;

[0037] The two groups of side rollers cooperate with each other on the side away from the bottom roller 1 to form an entrance that is arranged corresponding to and connected to the opening; the bottom roller 1 and the four groups of side rollers cooperate with each other to form a groove, and the conveyor belt 4 is located in the groove.

[0038] In the utility model, two groups of rollers are used to support the conveyor belt 4, each group of rollers includes four groups of side rollers and one group of bottom rollers 1; the arc-shaped section of the conveyor belt 4 is located on a circle, and the parent and child lines of each roller are tangent to the circle. The conveyor belt 4 forms a circular groove-shaped section with an upper opening under the constraint of the roller group; the opening formed by the conveyor belt 4 allows the transported material 6 to be filled in the lower part of the groove to achieve continuous transportation.

[0039] In some possible embodiments, when the load-bearing section and the return section are connected to form a horizontal curve, a stop roller 5 is respectively arranged at the top of each group of side roller groups close to the center of the horizontal curve, and the bottom of the stop roller 5 is abutted against the side close to the conveyor belt 4; the side roller group includes a middle roller 2 tangent to the outer side surface of the conveyor belt 4, and a top roller 3 located on the side of the middle roller 2 away from the bottom roller 1; the stop roller 5 is arranged at one end of the top roller 3 away from the middle roller 2.

[0040] By arranging the stop rollers, when the conveyor belt 4 slips under the action of the centripetal force of the horizontal curve, the edge of the conveyor belt 4 will contact the stop rollers when the conveyor belt 4 slips, and the stop rollers will limit the conveyor belt 4 from continuing to slip; since the upper rollers shrink inward, the sliding direction of the edge of the conveyor belt 4 is changed, so that the sliding direction deviates from the centripetal force; the sliding tendency of the conveyor belt 4 becomes smaller, and the contact force with the stop rollers is also reduced.

[0041] In some possible implementations, in order to facilitate the filling of the material 6, the center angle of the arc formed by the cross section of the conveyor belt 4 is θ, 270°≥θ≥230°.

[0042] In some possible implementations, when the load-bearing section and the return section are connected to form a horizontal straight section, the axis of the bottom roller 1 in the load-bearing section and the return section in the long direction is horizontally arranged, and the opening faces upward.

[0043] In some possible implementations, when the load-bearing section and the return section are connected to form a horizontal curve, the roller group rotates around its axial direction away from the center of the horizontal curve section;

[0044] Wherein, in the bearing section, the angle A1 formed between the bottom roller 1 and the horizontal plane after rotation;

[0045] In the return section, the bottom roller 1 forms an angle A2 with the horizontal plane after rotation, and A2>A1.

[0046] In some possible implementations, in the horizontal curve and as a load-bearing section, 15°≥A1≥7°.

[0047] In some possible implementations, in the horizontal curve and as a return segment, 25°≥A2>15°.

[0048] When the load-bearing section and the return section are connected to form a horizontal curve and the horizontal curve will be used as a turning section, the roller group rotates a certain angle toward the side away from the center of the horizontal curve with the center of the inscribed circle of the five groups of rollers (the arc formed by the conveyor belt 4) as the reference point, so that the rollers on the inner side of the curve are raised, thereby increasing the contact force ratio between the conveyor belt 4 and the side rollers on the side close to the center of the curve, and reducing the slip tendency of the edge of the conveyor belt 4 toward the stop roller; under the condition of a smaller turning radius, the conveyor belt 4 is more likely to reach a balanced state under the constraint of the roller group, thereby achieving smooth operation of the conveyor.

[0049] A belt conveyor comprises the above-mentioned belt conveyor structure with a circular groove section, a frame for installing a roller group, and a driving device connected to the roller group in a transmission manner.

[0050] Embodiment 1:

[0051] like Figure 1 , Figure 2 As shown, a belt conveyor structure with a circular groove cross section, Figure 1 The diagram shows the cross-sectional structure of the load-bearing section when it is a horizontal straight section; Figure 2 The diagram shows the cross-sectional structure of the return section when the section is horizontal and straight. Under this condition, the structure and layout of the load-bearing section and the return section are exactly the same.

[0052] The load-bearing section or return section includes a group of bottom rollers 1 located at the bottom of the conveyor belt 4 and tangent to the bottom of the outer side of the conveyor belt 4, two groups of middle rollers 2 located at the outer side of the conveyor belt 4 and tangent to the outer side of the conveyor belt 4, and two groups of top rollers 3 located above the middle rollers 2 and tangent to the outer side of the conveyor belt 4. The five groups of rollers support and constrain the conveyor belt 4 at the load-bearing section to form an arc structure with an opening facing upward to carry the conveyed material 6; the center angle of the arc structure is θ, 270°≥θ≥230°; of course, the center angle θ may also be 270°-280° if necessary.

[0053] When the belt conveyor structure is used as a horizontal straight section, the axis of the bottom roller 1 is arranged in the horizontal direction.

[0054] The various frames and driving devices required for the belt conveyor are prior art and do not belong to the improvement points of the present utility model, so they will not be described in detail here.

[0055] Embodiment 2:

[0056] like Figure 3 , Figure 4 As shown, a belt conveyor with a circular trough section is applied to a horizontal curved section; Figure 3 The diagram shows the cross-sectional structure of the load-bearing segment when it is in a horizontal curved segment; Figure 4 The diagram shows the cross-sectional structure of the return section in a horizontal curve section. Under this condition, the structure of the load-bearing section is the same as that of the return section, but the layout is different.

[0057] The load-bearing section includes a load-bearing section or a return section including a group of bottom rollers located at the bottom of the conveyor belt 4 and tangent to the bottom of the outer side of the conveyor belt 4, two groups of middle rollers 2 located at the outer side of the conveyor belt 4 and tangent to the outer side of the conveyor belt 4, two groups of top rollers 3 located above the middle rollers 2 and tangent to the outer side of the conveyor belt 4, and a stop roller 5 of the top roller 3 arranged on the side close to the center of the horizontal curve; the five groups of rollers support and constrain the conveyor belt 4 at the load-bearing section to form an arc structure with an opening facing upward to carry the conveyed material 6; the stop roller 5 prevents the conveyor belt 4 from slipping.

[0058] Wherein, in the bearing section, the angle A1 formed between the bottom roller 1 and the horizontal plane after rotation;

[0059] In the return section, the angle A2 formed by the bottom roller 1 and the horizontal plane after rotation is A2>A1; when in the horizontal curve and as a load-bearing section, 15°≥A1≥7°; when in the horizontal curve and as a return section, 25°≥A2>15°.

[0060] The utility model can effectively overcome the slip tendency of the conveyor belt 4 caused by the centripetal force. On the horizontal curve section, the opening of the conveyor belt 4 will be rotated away from the outside in the load-bearing section and the return section relative to the load-bearing section or the return section in the horizontal straight section around the axis of the conveyor belt 4, so that the opening is away from the center of the formed horizontal curve. After the rotation, the side roller group close to the side of the center line of the horizontal curve will be raised, which will increase the proportion of the contact force between the conveyor belt 4 and the side roller group in turn, increase the friction force of the conveyor belt 4, and reduce the slip tendency of the edge of the conveyor belt 4 toward the stop roller. Under the condition of a smaller turning radius, the conveyor belt 4 can more easily reach a balanced state under the constraint of the rollers, so as to achieve smooth operation of the conveyor.

[0061] A stop roller 5 is arranged at the top end of the top roller 3 near the center of the horizontal curve in the horizontal turning section. When the sliding edge of the conveyor belt 4 contacts the stop roller 5, the stop roller 5 restricts the conveyor belt 4 from continuing to slide. Since the top roller 3 contracts inwardly, the sliding direction of the edge of the conveyor belt 4 is changed, so that the sliding direction deviates from the centripetal force, and the contact force with the stop roller 5 becomes smaller. Therefore, compared with the ordinary trough section, the utility model makes the conveyor more adaptable to stable operation under the condition of smaller turning radius.

[0062] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A belt conveyor structure with a circular groove cross section, characterized in that: It includes a load-bearing section and a return section connected in sequence; the load-bearing section has the same structure as the return section; The bearing section includes a conveyor belt with an arc-shaped cross section and an opening, and a plurality of roller groups arranged on the outside of the conveyor belt and drivingly matched with the conveyor belt; Each group of the rollers comprises a bottom roller located at the bottom of the outer side of the conveyor belt and tangent to the conveyor belt, and a side roller group symmetrically arranged on both sides of the bottom roller and tangent to the outer side of the conveyor belt respectively; Each group of side rollers includes two groups of side rollers which are respectively tangent to the outer side surface of the conveyor belt.

2. A belt conveyor structure with a circular groove cross section according to claim 1, characterized in that: The two groups of side rollers, on the sides away from the bottom rollers, cooperate with each other to form an inlet that is arranged corresponding to and connected to the opening; The bottom roller and the four groups of side rollers cooperate with each other to form a groove, and the conveyor belt is located in the groove.

3. A belt conveyor structure with a circular groove cross section according to claim 2, characterized in that: When the load-bearing section and the return section are connected to form a horizontal curve, a stop roller is provided on the top of each side roller group close to the center of the horizontal curve, and the bottom of the stop roller abuts against the side of the conveyor belt close to each other.

4. A belt conveyor structure with a circular groove cross section according to claim 3, characterized in that: The side roller group includes a middle roller tangent to the outer side of the conveyor belt and a top roller located on the side of the middle roller away from the bottom roller; the retaining roller is arranged at one end of the top roller away from the middle roller.

5. The belt conveyor structure with a circular groove cross section according to claim 1, characterized in that: The center angle of the arc formed by the cross section of the conveyor belt is θ, and 270°≥θ≥230°.

6. The belt conveyor structure with a circular groove cross section according to claim 1, characterized in that: When the bearing section and the return section are connected to form a horizontal straight section, the axes of the bottom rollers in the bearing section and the return section in the long direction are arranged horizontally, and the openings face upwards.

7. The belt conveyor structure with a circular groove cross section according to claim 3, characterized in that: The roller belt group rotates around its axial direction away from the center of the horizontal curved section; Wherein, in the bearing section, the angle A1 formed between the bottom roller and the horizontal plane after rotation; In the return section, the bottom roller forms an angle A2 with the horizontal plane after rotation, and A2>A1.

8. A belt conveyor structure with a circular groove cross section according to claim 7, characterized in that: In the horizontal curve and as a load-bearing section, 15°≥A1≥7°.

9. The belt conveyor structure with a circular groove cross section according to claim 7, characterized in that: In the horizontal curve and as the return section, 25°≥A2>15°.

10. A belt conveyor, characterized in that: It comprises a belt conveyor structure with a circular groove cross-section as described in any one of claims 1 to 9.

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