Device for setting inner and outer curves of conveying belt of small-radius turning belt conveyor and using method of device

Abstract

The invention relates to a device for setting inner and outer curves of a conveying belt of a small-radius turning belt conveyor and a using method of the device. The running track of the conveying belt is set in advance and can be adjusted on site in real time. The setting device comprises a lower pressing roller which is obliquely arranged and has an outer curve side higher than an inner curve side, and an upper inner curve pressing roller located on the inner curve side. The lower pressing roller is installed to be high in outer curve side and low in inner curve side, the position of the lower pressing roller is adjusted to press the inner curve side of the lower belt downwards so that the inner curve side of the lower belt can be bent, the outer curve side of the lower belt can be prevented from turning over due to upward lifting, and the length of the movement track of the conveying belt is approximately equal to that of the movement track of the outer curve. The deviation of the lower belt is limited; the upper outer curve compression roller is in contact with the upper surface of the outer curve side of the upper belt, so that the upper outer curve compression roller is prevented from being lifted upwards to generate belt stacking; the upper inner curve pressing roller enables the inner curve side of the upper belt to be bent downwards, the inner curve side of the upper belt is in a wave shape, the length of the inner curve of the conveying belt is approximately equal to the length of the outer curve of the conveying belt, and meanwhile deviation and turning of the conveying belt can be limited.

Description

Technical Field

[0001] The invention relates to the field of conveying, in particular to the technical field of small-turn operation of conveyor belts, and specifically refers to an inner and outer curve setting device for a small-radius turning belt conveyor belt and a method for using the device. Background Art

[0002] The conveyor belt used in the trough belt conveyor is a closed loop formed by a rectangular parallelepiped, which runs on the supporting surface of the upper and lower roller groups of the belt conveyor. At present, most of the turning belt conveyors use this type of conveyor belt.

[0003] Along the length direction of the curved belt conveyor (the same is true for the conveyor belt), the side with a smaller radius of curvature is called the inner curve, and the side with a larger radius of curvature is called the outer curve. The geometric dimensions of the inner and outer curves are completely different.

[0004] For curved belt conveyors, especially those with small curves (curve radius of tens of meters), the conveyor belt and the supporting surface of the roller group cannot fit naturally because the conveyor belt is subjected to different forces due to the different lengths of the inner and outer curves. The outer curve of the conveyor belt has a tendency to break away from the supporting surface of the roller group and flip due to the high tension, while the inner curve becomes an irregular curve due to the negative tension. The upper and lower belts present irregular wave shapes. At the same time, under the action of centripetal force, the upper and lower branch conveyor belts deviate inward. Such an operating state not only destroys the balance of the conveyor belt, but also increases the operating resistance and power consumption of the system, greatly reducing the operating quality of the equipment. Therefore, if the conveyor belt is to operate normally, it must ensure that its outer curve does not break away from the supporting surface, the inner curve must be approximately equal to the distance traveled by the outer curve in the same period of time, and the deviation of the conveyor belt does not exceed the allowable range. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device for setting inner and outer curves of a small-radius turning belt conveyor belt and a method for using the device, which can prevent the conveyor belt from running off track and flipping over, and can set the running trajectory of the conveyor belt in advance and can be adjusted in real time on site.

[0006] The present invention is achieved through the following technical scheme: a device for setting inner and outer curves of a small-radius turning belt conveyor, comprising an upper roller group supporting the upper belt, and a lower supporting structure supporting the lower belt, wherein the lower supporting structure comprises a lower roller group supporting the lower belt and with the inner and outer curve sides tilted upward, and a lower pressure roller which is inclined and has the outer curve side higher than the inner curve side, wherein on the inner curve side, the lower pressure point of the lower pressure roller and the lower belt is lower than the corresponding support point of the lower belt supported by the lower roller group. When the present invention is in use, the lower pressing roller is installed such that the outer curve side is higher and the inner curve side is lower, and it contacts the upper surface of the lower belt. By adjusting the position of the lower pressing roller, the inner curve side of the lower belt is pressed down to make it bend. The effect is to limit the belt turnover caused by the upward lifting of the outer curve side of the lower belt, and to make the movement track length of the conveyor belt approximately equal to the movement track length of the outer curve. The bending degree is determined according to the turning radius of the belt conveyor and the force on the conveyor belt, which limits the deviation of the lower belt. At the same time, the prior setting of the lower pressing roller can preset the running track of the lower belt and can be adjusted in real time on site.

[0007] Preferably, the lower supporting roller group and the lower pressing roller are arranged at intervals, and the inner curve side of the lower belt is restricted to be a continuous and regular wavy shape. When this preferred solution is in use, since the inner curve side of the lower belt will generate a continuous wavy shape when bending, this setting that makes the inner curve side of the lower belt wavy can thus adapt to the change of the inner curve of the lower belt, making the distances passed by the inner curve and the outer curve approximately equal in the same period of time, and at the same time giving a guiding effect to the lower belt.

[0008] Preferably, the lower supporting roller group includes two lower supporting rollers that are symmetrically arranged and form a V shape. Through the setting of the two lower supporting rollers in this preferred solution, the two sides of the lower belt are warped relative to the middle part.

[0009] Preferably, a plurality of mounting holes are arranged in the height direction on the support frame for supporting the lower pressing roller, and the inclined shaft of the lower pressing roller is pivotally connected in the corresponding mounting holes.

[0010] Through the setting of the mounting holes in this preferred solution, it is convenient to adjust the inclination angle and direction of the lower pressing roller.

[0011] Preferably, a pressing roller group is arranged on the support frame for supporting the upper supporting roller group. The U-shaped upper supporting roller group includes an inner upper supporting roller located on the inner curve side. The pressing roller group includes an upper inner curve pressing roller located on the inner curve side. On the inner curve side, the pressing point of the upper inner curve pressing roller on the upper belt is lower than the corresponding supporting point of the inner upper supporting roller for supporting the upper belt.

[0012] In this preferred solution, the upper outer curve pressing roller contacts the upper surface of the outer curve side of the upper belt to prevent it from being lifted upward to cause belt overlapping; the upper inner curve pressing roller contacts the upper surface of the inner curve side of the upper belt. By adjusting the position of the upper inner curve pressing roller, the inner curve side of the upper belt is bent downward to make the inner curve side of the upper belt wavy, so that the length of the inner curve of the conveyor belt is approximately equal to the length of the outer curve. The bending degree is determined according to the turning radius of the belt conveyor and the force on the conveyor belt. At the same time, it can limit the deviation and turnover of the conveyor belt.

[0013] Preferably, the pressing roller group and the upper supporting roller group are arranged at intervals, and the upper inner curve pressing roller and the inner upper supporting roller restrict the inner curve side of the upper belt to be a continuous and regular wavy shape.

[0014] When this preferred solution is in use, since continuous waves will be generated when the inner curve side of the upper belt bends, the inner curve side of the upper belt is arranged in a wave shape to adapt to and adjust the change of the inner curve of the upper belt, so that the distances traveled by the inner curve and the outer curve in the same period of time are approximately equal, and at the same time, a guiding effect is given to the upper belt.

[0015] Preferably, the press roller group further includes an upper outer curve press roller located on the outer curve side, and the upper supporting roller group includes an outer upper supporting roller located on the outer curve side. In the conveying direction of the upper belt, a limiting gap for the upper belt to pass through is formed between the upper outer curve side curve press roller and the outer upper supporting roller. Through the setting of the upper outer curve press roller in this preferred solution, a limiting gap is formed, thereby giving a guiding effect to the upper belt.

[0016] The using method of the inner and outer curve setting device of the conveyor belt of the small-radius turning belt conveyor includes the following steps: During installation, the lower supporting roller group and the upper supporting roller group are installed on the intermediate frame of the belt conveyor. The upper outer curve press roller is in contact with the upper surface of the outer curve side of the upper belt to prevent it from lifting upward and causing belt overlapping; the upper inner curve press roller is in contact with the upper surface of the inner curve side of the upper belt. Adjust the position of the upper inner curve press roller to make the inner curve side of the upper belt bend downward, so that the inner curve side of the upper belt is in a wave shape, making the length of the inner curve of the conveyor belt approximately equal to the length of the outer curve. Its bending degree is determined according to the turning radius of the belt conveyor and the force on the conveyor belt. At the same time, the deviation and turning of the conveyor belt can be restricted; The lower press roller is installed with the outer curve side higher and the inner curve side lower and is in contact with the upper surface of the lower belt. Adjust the position of the lower press roller to press down the inner curve side of the lower belt to make it bend. The effect is to restrict the turning of the outer curve side of the lower belt caused by lifting upward and make the movement track length of the conveyor belt approximately equal to the movement track length of the outer curve. Its bending degree is determined according to the turning radius of the belt conveyor and the force on the conveyor belt. While making the inner curve side of the lower belt in a wave shape, the deviation of the lower belt can be restricted. During the commissioning of the belt conveyor, set and adjust each press roller according to the above method, so as to ensure that the running track of the conveyor belt meets the set requirements. The beneficial effects of the present invention are as follows: By arranging the lower pressing roller to be higher on the outer curve side and lower on the inner curve side and in contact with the upper surface of the lower belt, adjusting the position of the lower pressing roller presses down the inner curve side of the lower belt to make it bend, restricting the belt turning up on the outer curve side of the lower belt due to upward lifting, and making the movement track length of the conveyor belt approximately equal to the movement track length of the outer curve. Its bending degree is determined according to the turning radius of the belt conveyor and the force on the conveyor belt, restricting the deviation of the lower belt; By arranging the upper outer curve pressing roller to be in contact with the upper surface of the outer curve side of the upper belt, preventing it from lifting upward to cause belt overlapping; The upper inner curve pressing roller is in contact with the upper surface of the inner curve side of the upper belt. Adjusting the position of the upper inner curve pressing roller makes the inner curve side of the upper belt bend downward, making the inner curve side of the upper belt wavy, and making the length of the inner curve of the conveyor belt approximately equal to the length of the outer curve. Its bending degree is determined according to the turning radius of the belt conveyor and the force on the conveyor belt. At the same time, it can restrict the deviation and turning up of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic side view of the structure of the present invention; Figure 2 is a schematic top view of the inner curve side and the outer curve side of the upper belt of the present invention; Figure 3 is a schematic top view of the inner curve side and the outer curve side of the lower belt of the present invention; Figure 4 is Figure 2 a partial enlarged schematic view of; Figure 5 is Figure 3 a partial enlarged schematic view of; Figure 6 is a schematic view of the prior art; Figure 7 is a schematic top view of the inner curve side and the outer curve side of the upper belt of the prior art; Figure 8 is a schematic top view of the inner curve side and the outer curve side of the lower belt of the prior art; As shown in the figure: 1, intermediate frame; 2, support frame; 3, lower idler group; 4, lower pressing roller; 5, upper idler group; 6, upper outer curve pressing roller; 7, upper inner curve pressing roller; 8, upper belt; 9, lower belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To clearly illustrate the technical features of this solution, the following elaborates on this solution through specific embodiments.

[0019] Refer to the attached Figures 1-5, the conveyor belt running track setting device and its usage method for a small-radius turning belt conveyor. The setting device includes an intermediate frame 1, a support frame 2, a lower idler group 3, a lower pressing roller 4, an upper idler group 5, an upper outer curve pressing roller 6, an upper inner curve pressing roller 7, an upper conveyor belt 8, and a lower conveyor belt 9.

[0020] The intermediate frame 1 is a part of the belt conveyor and is fixedly installed on the support component of the belt conveyor. The support frame 2 is of a frame structure and is fixedly installed on the intermediate frame 1. Both the lower idler group 3 and the upper idler group 5 are installed on the intermediate frame of the belt conveyor. The lower idler group includes two symmetrically arranged lower idlers that form a V shape, so that both the inner curve side and the outer curve side of the lower idler group are upturned, thus causing the corresponding two sides of the supported lower conveyor belt to be upturned. The two lower idlers are arranged along the width direction of the upper conveyor belt. The upper idler group forms a U shape, and the upper conveyor belt 8 is installed in the trough shape of the upper idler group 5, forming a U shape. The upper idler group includes an inner upper idler located on the inner curve side, an outer upper idler located on the outer curve side, and a middle upper idler located between the inner upper idler and the outer upper idler.

[0021] The lower pressing roller 4 and the pressing roller group are installed on the support frame 2. There is a support frame between two adjacent lower idler groups, that is, along the conveyor belt conveying direction, the lower pressing roller and the lower idler group are arranged at intervals, and the lower pressing roller is located at the middle position between two adjacent lower idler groups, that is, the lower pressing roller and the lower idler group are arranged at equal intervals.

[0022] The upper idler group and the pressing roller group are arranged at equal intervals, and the upper pressing roller is located at the middle position between two adjacent pressing roller groups, that is, the upper pressing roller and the pressing roller group are arranged at equal intervals.

[0023] The lower pressing roller 4 is inclined and the outer curve side of the lower pressing roller 4 is higher than the inner curve side. On the inner curve side, the pressing point of the lower pressing roller 4 on the lower conveyor belt 9 is lower than the corresponding supporting point of the lower idler group 3 supporting the lower conveyor belt 9. The inner curve side of the lower conveyor belt 9 on the inner side of the lower idler and the lower pressing roller 4 is restricted to form a continuous and regular wavy shape.

[0024] The support frame 2 is provided with a number of mounting holes arranged in the height direction, and the inclined shaft of the lower pressing roller 4 is pivotally connected in the corresponding mounting holes. Thus, the angle adjustment setting of the lower pressing roller 4 is realized.

[0025] The pressing roller group includes an upper inner curve pressing roller 7 located on the inner curve side and an upper outer curve pressing roller 6 located on the outer curve side. On the inner curve side, the pressing point of the upper inner curve pressing roller 7 on the upper conveyor belt 8 is lower than the corresponding supporting point of the inner upper idler supporting the upper conveyor belt 8, so that the inner curve side of the upper conveyor belt 8 is bent downward. The upper inner curve pressing roller 7 and the inner upper idler restrict the inner curve side of the upper conveyor belt 8 to form a continuous and regular wavy shape.

[0026] In the conveying direction of the upper conveyor belt 8, there is a limiting gap for the upper conveyor belt 8 to pass through between the upper outer curve side curve pressing roller and the outer upper idler.

[0027] The upper part of the conveyor belt is the upper belt 8, and the lower part is the lower belt. Under the action of the frictional force with the conveyor belt, the pressure rollers in this solution can all rotate around their respective axes.

[0028] The prior art diagram is referred to in the appendix Figures 6-8 。

[0029] When the present invention is in use and installed, the lower idler group 3 and the upper idler group 5 are installed on the intermediate frame 1 of the belt conveyor. The upper outer curve pressure roller 6 contacts the upper surface of the outer curve side of the upper belt 8 to prevent it from lifting upward and causing belt stacking; the upper inner curve pressure roller 7 contacts the upper surface of the inner curve side of the upper belt 8. Adjust the position of the upper inner curve pressure roller 7 to make the inner curve side of the upper belt 8 bend downward, so that the inner curve side of the upper belt 8 forms a regular wave shape, making the length of the inner curve of the conveyor belt approximately equal to the length of the outer curve. Its bending degree is determined according to the turning radius of the belt conveyor and the force on the conveyor belt. At the same time, it can limit the deviation and turnover of the conveyor belt; The lower pressure roller 4 is installed with a higher outer curve side and a lower inner curve side and contacts the upper surface of the lower belt 9. Adjust the position of the lower pressure roller 4 to press down the inner curve side of the lower belt 9 to make it bend. The effect is to limit the turnover of the outer curve side of the lower belt 9 caused by lifting upward and make the movement track length of the conveyor belt approximately equal to the movement track length of the outer curve. Its bending degree is determined according to the turning radius of the belt conveyor and the force on the conveyor belt. While making the inner curve side of the lower belt 9 form a regular wave shape, it can limit the deviation of the lower belt 9. When debugging the belt conveyor, set and adjust each pressure roller according to the above method to ensure that the running track of the conveyor belt meets the set requirements.

[0030] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by or adopted the prior art, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not a limitation to the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that the changes, modifications, additions or substitutions made by those of ordinary skill in the technical field within the essence of the present invention do not depart from the purpose of the present invention and should also fall within the protection scope of the claims of the present invention.

Claims

1. A device for setting inner and outer curves of a small radius turning belt conveyor, comprising an upper roller group (5) supporting an upper belt (8), and a lower supporting structure supporting a lower belt (9), characterized in that: The lower support structure comprises a lower roller group (3) supporting the lower belt (9) and having an inner curve side and an outer curve side tilted upward, and a lower pressure roller (4) arranged obliquely and having an outer curve side higher than an inner curve side. On the inner curve side, a lower pressure point between the lower pressure roller (4) and the lower belt (9) is lower than a corresponding support point of the lower roller group (3) supporting the lower belt (9).

2. The device for setting inner and outer curves of a small radius turning belt conveyor according to claim 1, characterized in that: The lower roller group (3) and the lower pressure roller (4) are arranged at intervals, and restrict the inner curve side of the lower belt (9) to a continuous and regular wave shape.

3. The device for setting inner and outer curves of a small radius turning belt conveyor according to claim 1, characterized in that: The lower roller group (3) comprises two lower rollers which are symmetrically arranged and assembled into a V shape.

4. The device for setting inner and outer curves of a small radius turning belt conveyor according to claim 2, characterized in that: A support frame (2) supporting the lower pressing roller (4) is provided with a plurality of mounting holes arranged along the height direction, and the inclined axis of the lower pressing roller (4) is connected to the corresponding mounting holes.

5. The device for setting inner and outer curves of a small radius turning belt conveyor according to claim 4, characterized in that: A pressure roller group is provided on a bracket supporting the upper roller group (5), the U-shaped upper roller group (5) includes an inner supporting upper roller located on the inner curve side, the pressure roller group includes an upper inner curve pressure roller (7) located on the inner curve side, and on the inner curve side, the lower pressure point of the upper inner curve pressure roller (7) and the upper belt (8) is lower than the corresponding support point of the inner supporting upper roller supporting the upper belt (8).

6. The device for setting inner and outer curves of a small radius turning belt conveyor according to claim 5, characterized in that: The pressure roller group and the upper support roller group (5) are arranged at intervals, and the upper inner curve pressure roller (7) and the inner support upper roller restrict the inner curve side of the upper belt (8) to a continuous regular wave shape.

7. The device for setting inner and outer curves of a small radius turning belt conveyor according to claim 6, characterized in that: The pressure roller group also includes an upper outer curve pressure roller (6) located on the outer curve side, and the upper support roller group (5) includes an outer support upper roller located on the outer curve side, and along the transmission direction of the upper belt (8), a limiting gap is formed between the upper outer curve side curve pressure roller and the outer support upper roller for the upper belt (8) to pass through.

8. The method for using the device for setting inner and outer curves of a small radius turning belt conveyor according to claim 7, characterized in that: The following steps are involved: During installation, the lower roller group (3) and the upper roller group (5) are installed on the middle frame (1) of the belt conveyor, and the upper outer curve pressure roller (6) contacts the upper surface of the outer curve side of the upper belt (8) to prevent it from lifting upward and causing belt overlap; the upper inner curve pressure roller (7) contacts the upper surface of the inner curve side of the upper belt (8), and the position of the upper inner curve pressure roller (7) is adjusted to make the inner curve side of the upper belt (8) bend downward, so that the inner curve side of the upper belt (8) is wavy, so that the length of the inner curve of the conveyor belt is approximately equal to the length of the outer curve, and the degree of bending is determined according to the turning radius of the belt conveyor and the force on the conveyor belt, and at the same time, the deviation and overturning of the conveyor belt can be limited; The lower pressure roller (4) is installed so that the outer curve side is high and the inner curve side is low and contacts the upper surface of the lower belt (9). The position of the lower pressure roller (4) is adjusted to press the inner curve side of the lower belt (9) downward to bend it. The effect is to limit the belt turning caused by the outer curve side of the lower belt (9) being lifted upward and to make the movement track length of the conveyor belt approximately equal to the movement track length of the outer curve. The degree of bending is determined according to the turning radius of the belt conveyor and the force on the conveyor belt. The inner curve side of the lower belt (9) is made wavy and the deviation of the lower belt (9) can be limited. When the belt conveyor is debugged, the setting and adjustment of each pressure roller are performed according to the above method, so as to ensure that the running track of the conveyor belt meets the setting requirements.

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