Large-angle self-circulating belt conveyor testing machine

Abstract

The present invention relates to an experimental device, and in particular to a large-angle self-circulating belt conveyor testing machine capable of continuous operation, comprising a conveying unit, a return unit, a first return device, and a second return device. The conveying unit comprises a conveyor belt arranged in an S shape along the conveying direction, the conveyor belt being provided with a first feed end and a first discharge end, the conveyor belt comprising a covering belt and a carrying belt, a storage space for placing materials being formed between the covering belt and the carrying belt, the return unit comprising a return belt arranged in a straight line along the return direction, the return belt surface being used to carry materials, the return belt being provided with a second feed end and a second discharge end, the first return device being provided between the first discharge end and the second feed end, and the second return device being provided between the second discharge end and the first feed end. The experimental machine of the present invention automatically cycles and continuously operates during the test process without manual operation, and can prevent materials from spilling during simulated conveying.

Description

Technical Field

[0001] The invention relates to an experimental device, in particular to a large-inclination-angle self-circulating belt conveyor testing machine capable of continuous operation. Background Art

[0002] Open-pit coal mining has entered a period of rapid development. In the future, open-pit coal flow transportation systems will develop in the direction of continuity, large-scale, and intelligentization. Belt conveyors, as key equipment in coal flow transportation systems, are crucial to their operating performance. During the development of belt conveyors, simulation tests are required under the deep pit and large-angle end wall conditions of open-pit coal mines. During the test, the belt conveyor prototype needs to operate continuously to transport materials. However, in the existing belt conveyor prototype tests, materials can only be transported in a one-way manner when they are transported and lifted, and it is impossible to lift the materials and then return them to form a cycle. In order to keep the belt conveyor test prototype running continuously, it is necessary to continuously add materials to the belt conveyor, which makes the test process cumbersome. Summary of the Invention

[0003] In response to the above problems, the purpose of the present invention is to provide a large-angle self-circulating belt conveyor testing machine, which automatically circulates and runs continuously during the test without manual operation, and can prevent granular materials from being scattered when simulating large-angle transportation in deep pit coal mines.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a large-angle self-circulating belt conveyor testing machine for continuous transportation testing, comprising a conveying unit, a return unit, a first return device, and a second return device, wherein the conveying unit comprises a conveyor belt arranged in an S shape along the conveying direction, the conveying angle of the conveyor belt is α, 40°≤α≤90°, the conveyor belt comprises a covering belt and a carrying belt, the covering belt is pressed against the carrying belt, and a accommodating space for placing materials is formed between the covering belt and the carrying belt, the conveyor belt is provided with a first feeding end and a first discharging end, the first discharging end is higher than the first feeding end, the return unit comprises a return belt arranged in a straight line along the return direction, and the surface of the return belt is used to support The conveying angle of the return belt is β, 0°≤β≤25°, the return belt is provided with a second feed end and a second discharge end, the second feed end is lower than the first discharge end, the first return device is provided between the first discharge end and the second feed end, the second return device is provided between the second discharge end and the first feed end, the granular material is transported from the first feed end to the first discharge end via the conveyor belt, transported from the first discharge end to the second feed end via the first return device, transported from the second feed end to the second discharge end by the return belt, and transported from the second discharge end to the first feed end by the second return device, forming a self-circulation.

[0005] The large-angle self-circulating belt conveyor testing machine of the present invention, wherein the conveying unit further includes a first driving mechanism and a second driving mechanism, the covering belt is driven by the first driving mechanism, the carrying belt is driven by the second driving mechanism, and the covering belt moves synchronously with the carrying belt.

[0006] The large-angle self-circulating belt conveyor testing machine of the present invention further includes a control unit, and the conveying unit also includes a first speed sensor and a second speed sensor. The control unit is connected to the first drive mechanism, the second drive mechanism, the first speed sensor, and the second speed sensor. The first speed sensor is used to collect speed information of the cover belt and transmit it to the control unit. The second speed sensor is used to collect speed information of the carrier belt and transmit it to the control unit. The control unit controls the driving speed of the first drive mechanism and the second drive mechanism according to the speed information of the cover belt and the speed information of the carrier belt to synchronize the cover belt with the carrier belt.

[0007] The high-inclination-angle self-circulating belt conveyor testing machine of the present invention, wherein the conveying unit further comprises a pressing mechanism, and the pressing mechanism causes the cover belt to have a tendency to move toward the direction approaching the carrier belt.

[0008] The present invention provides a large-angle self-circulating belt conveyor testing machine, wherein the conveying unit further includes a clamping force sensor, the control unit is connected to the clamping mechanism and the clamping force sensor, the clamping force sensor is arranged on the clamping mechanism, the clamping force sensor is used to collect the clamping force information applied to the covering belt and transmit it to the control unit, and the control unit controls the force of the clamping mechanism according to the clamping force information.

[0009] The large-angle self-circulating belt conveyor testing machine of the present invention is characterized in that the length of the carrying belt is greater than the length of the covering belt, and the parts of the two ends of the carrying belt that extend beyond the covering belt respectively form the first feed end and the first discharge end, and the first feed end and the first discharge end are respectively located at the two ends of the S-shape.

[0010] The invention provides a large-angle self-circulating belt conveyor testing machine, wherein the cross section of the carrier belt is in the shape of a groove with the notch expanding outwards.

[0011] The large-angle self-circulating belt conveyor testing machine of the present invention is characterized in that the covering belt is made of elastic material.

[0012] The high-angle self-circulating belt conveyor testing machine of the present invention is characterized in that the first return device is a sliding hopper, the end of the first discharge end is arranged in the feed port of the sliding hopper, and the discharge port of the sliding hopper is arranged above the second feed end.

[0013] The present invention provides a high-angle self-circulating belt conveyor testing machine, wherein the second discharge end is higher than the first feed end, the second return device is a grading screen, the grading screen is arranged below the second discharge end, the grading screen's silo is divided into a plurality of sub-silos by at least one baffle, the baffle is detachable, each of the sub-silos is used to store materials of different particle sizes, the discharge port of the grading screen is located at the bottom of each sub-silo, and the discharge port of the grading screen is located above the first feed end.

[0014] The large-angle self-circulating belt conveyor test machine of the present invention is capable of conveying granular materials from the first feed end of the conveying unit to the first discharge end via the conveyor belt through the conveying unit, conveying them from the first discharge end to the second feed end via the first return device, and then conveying them from the second feed end to the second discharge end by the return belt of the return unit, and conveying them from the second discharge end to the first feed end by the second return device, thereby forming a self-circulation. After starting operation, a continuous transportation test can be carried out without manual addition of materials or manual operation, and the testing process is more convenient. At the same time, since the conveyor belt includes a covering belt and a carrying belt, a storage space for placing materials is formed between the covering belt and the carrying belt, and the granular materials are clamped in the storage space, so that the self-circulating large-angle granular material belt conveyor test machine for deep pit coal mines of the present invention can prevent the granular materials from being scattered when used for large-angle transportation in deep pit coal mines, and the conveyor belt is S-shaped along the conveying direction, which makes the material conveying process smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a large-angle self-circulating belt conveyor testing machine of the present invention;

[0016] Figure 2 This is a structural schematic diagram of a first discharging end, a first return device, and a second feeding end in a large-angle self-circulating belt conveyor testing machine of the present invention;

[0017] Figure 3 This is a structural schematic diagram of the second discharging end, the second return device, and the first feeding end of a large-angle self-circulating belt conveyor testing machine of the present invention;

[0018] Figure 4 A cross-sectional view of a conveyor belt in a large-angle self-circulating belt conveyor testing machine according to the present invention;

[0019] Figure 5 This is a structural diagram of a control device in a large-angle self-circulating belt conveyor testing machine of the present invention. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] It should be noted that, in the description of this application, terms such as "between," "above," and "below" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is for ease of description only and does not indicate or imply that the device or element must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, it should not be understood as limiting this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated.

[0022] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the present invention is a large-angle self-circulating belt conveyor testing machine, which is used for research and testing of large-angle belt conveyors for bulk materials and for continuous transportation tests, including a conveying unit 01, a return unit 02, a first return device 03, and a second return device 04. The conveying unit 01 includes a conveyor belt 12 arranged in an S shape along the conveying direction, and the conveying angle of the conveyor belt 12 is α. In this embodiment, α=85°. The conveyor belt 12 includes a covering belt 121 and a carrying belt 122. The covering belt 121 is pressed tightly on the carrying belt 122, and the two edges of the covering belt 121 and the two edges of the carrying belt 122 are in contact with each other, forming a receiving space 125 for placing materials between the covering belt 121 and the carrying belt 122. The conveyor belt 12 is provided with a first feed end 123 and a first discharge end 124. The first discharge end 124 is higher than the first feed end 123. The return unit 02 includes a return belt 22 arranged in a straight line along the return direction. The surface of the return belt 22 The conveying angle of the return belt 22 is β, which is 25° in this embodiment. The return belt 22 is provided with a second feed end 221 and a second discharge end 222. The second feed end 221 is higher than the second discharge end 222, and the second feed end 221 is lower than the first discharge end 124. The first return device 03 is provided between the first discharge end 124 and the second feed end 221, and the second return device 04 is provided between the second discharge end 222 and the first feed end 12 3, the granular material is transported from the first feed end 123 to the first discharge end 124 via the conveyor belt 12, the granular material is lifted to a predetermined height, and is transported from the first discharge end 124 to the second feed end 221 via the first return device 03, and is transported from the second feed end 221 to the second discharge end 222 by the return belt 22, and is transported from the second discharge end 222 to the first feed end 123 by the second return device 04, and the granular material returns to its original position, forming a self-circulation. In actual application, when the end wall of the deep pit coal mine is low and the lifting height of the material is low, the conveying angle α of the conveyor belt 12 takes a smaller value, and the value of α can also be 40°, 50°, 60°, etc. Correspondingly, the conveying angle β of the return belt 22 takes values ​​of 10°, 15°, and 20°. When the conveying angle is too small, the length of the conveyor belt needs to be increased to meet the lifting height, resulting in a large footprint, high cost, and low conveying efficiency. If the conveying angle is too large, the friction between the material and the conveyor belt will be too small, and the material will be severely scattered. In the large-angle self-circulating belt conveyor tester of the present invention, the conveying angle α of the conveyor belt 12 has a value range of 40°≤α≤90°, and the conveying angle β of the return belt 22 has a value range of 0°≤β≤25°, which avoids making the conveyor belt too long due to the small conveying angle, has a small footprint, is convenient to be set up in the test site, has low cost, and has high conveying efficiency. At the same time, it also avoids the conveying angle being too large, which causes the friction between the material and the conveyor belt to be too small, and causes serious material scattering.The present invention provides a self-circulating, high-angle granular material belt conveyor testing machine for deep pit coal mines. During the test, the granular material is placed at the first feed end and the testing machine is started to simulate the running speeds of the conveyor belt 12 and the return belt 22 at different transportation volumes, and to simulate the maximum conveying angle that the conveyor belt 12 can reach when transporting materials with different particle size ratios, to keep the material from spilling, and to test the pressing force between the covering belt 121 and the carrying belt 122. The present invention provides a large-angle self-circulating belt conveyor testing machine, which includes a conveying unit 01, a return unit 02, a first return device 03, and a second return device 04. Granular materials can be transported from the first feed end 123 of the conveying unit 01 to the first discharge end 124 via the conveyor belt 12, then transported from the first discharge end 124 to the second feed end 221 via the first return device 03, then transported from the second feed end 221 to the second discharge end 222 by the return belt 22 of the return unit 02, and finally transported from the second discharge end 222 to the first feed end 123 by the second return device 04, thereby forming a self-circulation. After starting operation, continuous transportation tests can be carried out without manual addition of materials or manual operation, and the test process is more convenient. At the same time, since the conveyor belt 12 includes a covering belt 121 and a carrying belt 122, a receiving space 125 for placing materials is formed between the covering belt 121 and the carrying belt 122. The granular material is clamped in the receiving space 125, so that the self-circulating large-angle granular material belt conveyor test machine for deep pit coal mines of the present invention can prevent the granular material from being scattered when used for large-angle transportation in deep pit coal mines, and the conveyor belt 12 is S-shaped along the conveying direction, so that the material conveying process is smoother.

[0024] The high-angle self-circulating belt conveyor testing machine of the present invention includes a conveying unit 01 further comprising a first drive mechanism 13 and a second drive mechanism 14. The cover belt 121 is driven by the first drive mechanism 13, and the carrier belt 122 is driven by the second drive mechanism 14. The cover belt 121 and the carrier belt 122 move synchronously. Specifically, the first drive mechanism 13 comprises a first drive motor and a first drive roller, and the first drive motor drives the cover belt 121 to move via the first drive roller. The second drive mechanism 14 comprises a second drive motor and a second drive roller, and the second drive motor drives the carrier belt 122 to move via the second drive roller.

[0025] like Figure 5As shown, the large-angle self-circulating belt conveyor testing machine of the present invention also includes a control unit 05, and the conveying unit 01 also includes a first bracket 11, a first speed sensor 15, and a second speed sensor 16. The control unit 05 is connected to the first drive mechanism 13, the second drive mechanism 14, the first speed sensor 15, and the second speed sensor 16. The first speed sensor 15 and the second speed sensor 16 are both arranged on the first bracket 11. The first speed sensor 15 is used to collect speed information of the covering belt 121 and transmit it to the control unit 05. The second speed sensor 16 is used to collect speed information of the carrier belt 122 and transmit it to the control unit 05. The control unit 05 controls the driving speed of the first drive mechanism 13 and the second drive mechanism 14 according to the speed information of the covering belt 121 and the speed information of the carrier belt 122 to synchronize the carrier belt 122 with the covering belt 121, so that the driving speed of the first drive mechanism 13 and the second drive mechanism 14 can be controlled more accurately, thereby avoiding misalignment between the carrier belt 122 and the covering belt 121 and causing granular material to be scattered.

[0026] The large-angle self-circulating belt conveyor test machine of the present invention, the conveying unit 01 also includes a clamping mechanism 17, which makes the covering belt 121 have a tendency to move toward the direction of the carrier belt 122. Specifically, the clamping mechanism is located above the covering belt 121, and the clamping mechanism includes an elastic member, a clamping bracket, and two sets of pressure rollers. One end of the elastic member is connected to the side of the clamping bracket facing away from the covering belt 121, and the connection point between the elastic member and the clamping bracket is located at the center point of the clamping bracket along the length direction. The other end of the elastic member is connected to the first bracket 11. The two sets of pressure rollers are respectively arranged at the two ends of the clamping bracket along the length direction facing the covering belt 121. The two sets of pressure rollers correspond to the two sides of the covering belt 121 along the width direction. When the clamping mechanism 17 applies a clamping force to the covering belt 121, the pressure rollers contact the covering belt 121, and the pressure rollers are suitable for rotating relative to the covering belt 121. The setting of the clamping mechanism 17 increases the friction between materials, between materials and the carrying belt 122, and between materials and the covering belt 121, preventing materials from sliding down and scattering during transportation, and further ensuring that the self-circulating large-angle granular material belt conveyor experimental machine for deep pit coal mines of the present invention is suitable for large-angle transportation in deep pit coal mines.

[0027] The high-angle, self-circulating belt conveyor testing machine of the present invention includes a conveying unit 01 that further includes a pressing force sensor 18. The control unit 05 is connected to the pressing mechanism 17. The pressing force sensor 18 is disposed on the pressing mechanism 17. The pressing force sensor 18 is used to collect information about the pressing force applied to the cover belt 121 and transmit it to the control unit 05. The control unit 05 then controls the pressing mechanism 17 based on the pressing force information. During testing using the testing machine of the present invention, it is necessary to verify the pressure required to ensure that granular material does not spill under different conveying conditions. By providing the pressing force sensor 18, it is possible to more accurately apply the pressing force to the cover belt 121 and more intuitively obtain the pressing force data.

[0028] The present invention provides a high-angle, self-circulating belt conveyor testing machine, wherein the length of the carrier belt 122 is greater than the length of the cover belt 121. The portions of the carrier belt 122 extending beyond the cover belt 121 at both ends form a first feed end 123 and a first discharge end 124, respectively. The first feed end 123 and the first discharge end 124 are located at opposite ends of an S-shape. The portion of one end of the carrier belt 122 extending beyond the cover belt 121 forms the first feed end 123, facilitating the discharge of material from the second return device 04. Furthermore, the two ends of the S-shape are close to a horizontal plane, and the first feed end 123 is located at one end of the S-shape, ensuring smoother conveyance of material after it is discharged from the second return device 04 to the first feed end 123, thereby preventing spillage.

[0029] The large-angle self-circulating belt conveyor testing machine of the present invention has a cross-section of the carrier belt 122 in the shape of a groove with the notch expanding outward, which prevents the material from being scattered at the first feed end 123 and the first discharge end 124 and facilitates the fitting of the covering belt 121 and the carrier belt 122.

[0030] In the high-angle self-circulating belt conveyor testing machine of the present invention, the covering belt 121 is made of elastic material, so that the volume of the accommodating space 125 between the covering belt 121 and the carrying belt 122 can be changed to change the transportation volume to adapt to different working conditions.

[0031] The high-angle self-circulating belt conveyor testing machine of the present invention is characterized in that the first return device 03 is a sliding hopper, and the end of the first discharge end 124 is arranged in the feed port of the sliding hopper to prevent the material from being scattered when it is transported from the conveyor belt 12 to the return belt 22 through the first return device 03. The discharge port of the sliding hopper is arranged above the second feed end 221, so that the material can automatically fall to the second feed end 221 of the return belt 22 without the aid of external force.

[0032] The present invention provides a high-angle self-circulating belt conveyor test machine, wherein the second discharge end 222 is higher than the first feed end 123, and the second return device 04 is a grading screen, which is arranged below the second discharge end 222. The grading screen's silo is divided into multiple sub-silos by one or more baffles 41, and the baffles 41 are removable. The grading screen separates granular materials into different particle sizes, and materials of different particle sizes are stored in different sub-silos. The discharge port of the grading screen is located at the bottom of each sub-silo, and the discharge port of the grading screen is located above the first feed end 123. Materials of different particle sizes require different pressures during transportation, and the maximum conveying angles of the conveyor belt are different. When using this experimental machine to conduct a working condition simulation test of materials of different particle sizes, the discharge port at the bottom of the sub-silo is opened, so that materials of a particle size that meets the test requirements fall through the discharge port to the first feed end 123 of the conveyor belt 12 for testing.

[0033] For those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. For some technical feature terms that are not explained, those skilled in the art are fully capable of reasonably and unambiguously deducing based on the logical relationship between the preceding and following contexts, so as to clearly and completely implement the above technical solutions. In summary, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will fall within the scope of protection of the present application.

Claims

1. A large-angle self-circulating belt conveyor testing machine for continuous transportation testing, characterized in that: The invention comprises a conveying unit (01), a return unit (02), a first return material device (03), and a second return material device (04); the conveying unit (01) comprises a conveying belt (12) arranged in an S shape along a conveying direction; the conveying angle of the conveying belt (12) is α, 40°≤α≤90°; the conveying belt (12) comprises a covering belt (121) and a carrying belt (122); the covering belt (121) is pressed against the carrying belt (122); 1) and the carrying belt (122) form a receiving space (125) for placing materials, the conveyor belt (12) is provided with a first feeding end (123) and a first discharging end (124), the first discharging end (124) is higher than the first feeding end (123), the return unit (02) includes a return belt (22) arranged in a straight line along the return direction, the surface of the return belt (22) is used to carry materials, and the conveying angle of the return belt (22) is β, 0° ≤β≤25°, the return belt (22) is provided with a second feed end (221) and a second discharge end (222), the second feed end (221) is lower than the first discharge end (124), the first return device (03) is provided between the first discharge end (124) and the second feed end (221), the second return device (04) is provided between the second discharge end (222) and the first feed end (123), the granular material is transported from the first feed end (123) to the first discharge end (124) via the conveyor belt (12), transported from the first discharge end (124) to the second feed end (221) via the first return device (03), transported from the second feed end (221) to the second discharge end (222) by the return belt (22), and transported from the second discharge end (222) to the first feed end (123) by the second return device (04), forming a self-circulation. The conveying unit (01) further comprises a first driving mechanism (13) and a second driving mechanism (14); the covering belt (121) is driven by the first driving mechanism (13); the carrying belt (122) is driven by the second driving mechanism (14); the covering belt (121) and the carrying belt (122) move synchronously. The large-angle self-circulating belt conveyor test machine further includes a control unit (05), and the conveying unit (01) further includes a first speed sensor (15) and a second speed sensor (16). The control unit (05) is connected to the first driving mechanism (13), the second driving mechanism (14), the first speed sensor (15), and the second speed sensor (16). The first speed sensor (15) is used to collect speed information of the covering belt (121) and transmit it to the control unit (05). The second speed sensor (16) is used to collect speed information of the carrier belt (122) and transmit it to the control unit (05). The control unit (05) controls the driving speeds of the first driving mechanism (13) and the second driving mechanism (14) according to the speed information of the covering belt (121) and the speed information of the carrier belt (122) so as to synchronize the covering belt (121) with the carrier belt (122).

2. The large-angle self-circulating belt conveyor testing machine according to claim 1, characterized in that: The conveying unit (01) further comprises a pressing mechanism (17), wherein the pressing mechanism (17) causes the covering belt (121) to have a tendency to move in a direction close to the carrier belt (122).

3. The large-angle self-circulating belt conveyor testing machine according to claim 2, characterized in that: The conveying unit (01) further includes a pressing force sensor (18), the control unit (05) is connected to the pressing mechanism (17) and the pressing force sensor (18), the pressing force sensor (18) is arranged on the pressing mechanism (17), the pressing force sensor (18) is used to collect the pressing force information applied to the covering belt (121) and transmit it to the control unit (05), and the control unit (05) controls the pressing mechanism (17) to apply force according to the pressing force information.

4. The large-angle self-circulating belt conveyor testing machine according to claim 1, characterized in that: The length of the carrier belt (122) is greater than the length of the covering belt (121), and the portions of the two ends of the carrier belt (122) that extend beyond the covering belt (121) respectively form the first feed end (123) and the first discharge end (124), and the first feed end (123) and the first discharge end (124) are respectively located at the two ends of the S-shape.

5. The large-angle self-circulating belt conveyor testing machine according to claim 1, characterized in that: The cross section of the carrier belt (122) is in the shape of a groove with the notch expanding outwards.

6. The large-angle self-circulating belt conveyor testing machine according to claim 1, characterized in that: The covering belt (121) is made of elastic material.

7. The large-angle self-circulating belt conveyor testing machine according to any one of claims 1 to 6, characterized in that: The first material return device (03) is a sliding hopper, the end of the first discharge end (124) is arranged in the feed port of the sliding hopper, and the discharge port of the sliding hopper is arranged above the second feed end (221).

8. The large-angle self-circulating belt conveyor testing machine according to claim 7, characterized in that: The second discharge end (222) is higher than the first feed end (123), the second return device (04) is a grading screen, the grading screen is arranged below the second discharge end (222), the silo of the grading screen is divided into a plurality of sub-silos by at least one baffle (41), the baffle (41) is detachable, each sub-silo is used to store materials of different particle sizes, the discharge port of the grading screen is located at the bottom of each sub-silo, and the discharge port of the grading screen is located above the first feed end (123).

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