Conveyor for coal mine transportation

Abstract

The invention relates to the technical field of coal mine transportation, in particular to a coal mine transportation conveyor which comprises a machine frame, a first motor, a first rotating shaft, a conveying roller, a conveying belt, a deviation rectifying assembly and an adjusting assembly, the first motor is arranged on one side of the machine frame, the first rotating shaft is arranged at the output end of the first motor, and the conveying roller is arranged on the outer side of the first rotating shaft; a conveying belt is arranged on the outer side of the conveying roller, a deviation rectifying assembly is arranged above the conveying belt, an adjusting assembly is arranged above the rack, and the deviation rectifying assembly comprises a first moving frame, a second motor, a second rotating shaft, a connecting frame, a third motor, a third rotating shaft, a deviation rectifying roller and deviation rectifying fins; according to the belt deviation rectifying device, the inclined flexible deviation rectifying fins are adopted, elastic restoring force is triggered through lateral extrusion force generated when a belt deviates, instant deviation rectifying of tiny deviation amount is achieved through the component force effect of the inclined faces of the fins, rigid friction is converted into flexible deformation force, the deviation rectifying response time is shortened while the abrasion loss is reduced, and the deviation rectifying efficiency is improved. The method has the characteristics of self-adaptive correction and timely response.

Description

Technical Field

[0001] This invention relates to the field of coal mine transportation technology, and more particularly to coal mine conveyors. Background Technology

[0002] Coal mine conveyors are key equipment for achieving continuous operation in coal mining. Their core function is to transport coal and mineral materials from the working face to a designated location via a circular conveyor belt. Existing coal mine conveyors typically employ a frame support structure, equipped with a drive motor, conveyor rollers, and conveyor belt to form a basic conveying system. Some models are equipped with belt deviation correction devices to solve the problem of belt misalignment. Traditional deviation correction devices mostly use rigid side rollers or hydraulic deviation correction mechanisms, achieving the deviation correction function through physical limiting or forced pushing. Tensioning systems mostly rely on manual adjustment of bolts or simple screw mechanisms to adjust belt tension. Belt cleaning devices are usually fixed scraper or brush structures.

[0003] Traditional rigid belt alignment devices correct belt misalignment by generating friction through direct rigid contact between the metal flange and the belt edge. However, continuous friction in traditional rigid belt alignment devices leads to rapid wear of the belt edge, shortening the belt's lifespan. Furthermore, the correction action is only triggered after the belt misalignment reaches a threshold, resulting in a response lag. This makes it difficult to intervene in time, especially during periods of slight belt misalignment, which can lead to the accumulation of misalignment and cause even greater malfunctions.

[0004] Therefore, to address the above problems, a coal mine conveyor is proposed, which adopts inclined flexible correction fins. It utilizes the lateral extrusion force generated when the belt deviates to trigger the elastic restoring force. Through the force component effect of the inclined surface of the fins, it achieves instant correction of small deviations, transforming rigid friction into flexible deformation force. This reduces wear while shortening the correction response time, and features adaptive correction and timely response. Summary of the Invention

[0005] In order to overcome the problems that traditional rigid belt alignment devices cause rapid wear of belt edges due to continuous friction during the daily operation of traditional coal mine conveyors, thus shortening the belt's service life, and that the belt alignment action is only triggered after the belt offset reaches a threshold, especially when the belt is slightly offset, it is impossible to intervene in time, leading to the accumulation of offset and causing greater failures.

[0006] The technical solution of the present invention is as follows: a coal mine transport conveyor, comprising a frame, a first motor, a first rotating shaft, a conveyor roller, a conveyor belt, a correction component, and an adjustment component. A first motor is arranged on one side of the frame, and a first rotating shaft is arranged at the output end of the first motor. A conveyor roller is arranged outside the first rotating shaft, and a conveyor belt is arranged outside the conveyor roller. Two sets of correction components are symmetrically arranged above the conveyor belt. An adjustment component is arranged above the frame. The correction component includes a first movable frame, a second motor, a second rotating shaft, a connecting frame, a third motor, a third rotating shaft, a correction roller, and correction fins. A first movable frame is arranged above the conveyor belt, and a second motor is arranged above the first movable frame. A second rotating shaft is arranged at the output end of the second motor, and a connecting frame is arranged at the lower end of the second rotating shaft. A third motor is arranged on one side of the connecting frame, and a third rotating shaft is arranged at the output end of the third motor. A correction roller is connected to the outer side of the third rotating shaft via a keyway. Multiple sets of correction fins are arranged in a ring around the outer side of the correction roller. The correction fins have an inclined structure and are made of flexible material.

[0007] Preferably, by starting a first motor to drive a first rotating shaft, the first rotating shaft drives a conveyor roller to rotate, which in turn drives a conveyor belt to rotate, thus conveying the coal material on the conveyor belt. The first moving frame is then moved above the two sides of the conveyor belt. A second motor is then started to drive a second rotating shaft, which in turn drives a connecting frame to rotate. The angle of the straightening roller on the horizontal plane is adjusted by the rotation of the connecting frame. A third motor is then started to drive a third rotating shaft, which in turn drives the straightening roller to rotate, which in turn drives the straightening fins to rotate. When the conveyor belt structure is not misaligned, the inclined edge of the straightening fins hardly contacts the edge of the belt or only lightly touches it. Micro-contact: When the conveyor belt deviates outward, the edge of the belt on the deviated side presses against the correction fins on that side. The correction fins deform under pressure, generating an elastic restoring force that pushes them back to their original position. At the same time, it applies an inward reaction force to the edge of the conveyor belt. The inclined surface of the correction fins decomposes the force on the edge of the conveyor belt into a component along the centerline of the conveyor belt, generating a small guiding torque to correct the laterally deviated conveyor belt. This device triggers the correction force by the self-displacement of the belt structure. The flexible correction structure reduces wear on the conveyor belt. Correction is triggered as soon as the belt deviates, resulting in a fast response speed and the characteristics of adaptive correction and timely response.

[0008] Preferably, the adjustment assembly includes a first fixed frame and a fourth motor, with the first fixed frame located on one side of the frame and the fourth motor located above the first fixed frame.

[0009] Preferably, the adjustment assembly also includes a first lead screw and a first lifting frame, with the first lead screw provided at the output end of the fourth motor, and the first lifting frame being threadedly connected to the outer side of the first lead screw.

[0010] Preferably, the adjustment assembly also includes a fifth motor and a second lead screw. The fifth motor is provided on one side of the first lifting frame, and the output end of the fifth motor is provided with a second lead screw. The second lead screw has two opposite threads, and the second lead screw is threadedly connected to two sets of first moving frames.

[0011] Preferably, a second fixing frame is provided on the inner side of the frame, and a sixth motor is provided below the second fixing frame.

[0012] Preferably, the output end of the sixth motor is provided with a third lead screw, and the outer thread of the third lead screw is connected to a second lifting frame.

[0013] Preferably, a connecting rod is rotatably connected to the inner side of the second lifting frame, and a tensioning roller is provided on the outer side of the connecting rod.

[0014] Preferably, the tension roller has multiple sets of fixing grooves on its side, which are arranged in a ring on the side of the tension roller, and miniature telescopic rods are provided on the inner side of the fixing grooves.

[0015] Preferably, a spring is provided on the outer side of the miniature telescopic rod, and a connecting plate is provided at one end of the miniature telescopic rod. The two ends of the spring are respectively connected to the connecting plate and the tensioning roller.

[0016] Preferably, a base plate is provided below the frame, an air pump is provided above the base plate, and a nozzle is provided at the output end of the air pump.

[0017] The beneficial effects of this invention are: By starting the first motor to drive the first shaft to rotate, the first shaft drives the conveyor roller to rotate, which in turn drives the conveyor belt to rotate, thus conveying the coal mining material on the conveyor belt. The first moving frame is then moved above the two sides of the conveyor belt. The second motor is then started to drive the second shaft to rotate, which in turn drives the connecting frame to rotate. The angle of the straightening roller on the horizontal plane is adjusted by the rotation of the connecting frame. Finally, the third motor is started to drive the third shaft to rotate, which in turn drives the straightening roller to rotate, which in turn drives the straightening fins to rotate. When the conveyor belt structure is not misaligned, the inclined edges of the straightening fins hardly contact the belt edge or only slightly. When the conveyor belt deviates outward, the edge of the belt on the deviated side presses against the correction fins on that side. The correction fins deform under pressure, generating an elastic restoring force that pushes them back to their original position. At the same time, it applies an inward reaction force to the edge of the conveyor belt. The inclined surface of the correction fins decomposes the force on the edge of the conveyor belt into a component along the centerline of the conveyor belt, generating a small guiding torque to correct the laterally deviated conveyor belt. This device triggers the correction force by the self-displacement of the belt structure. The flexible correction structure reduces wear on the conveyor belt. Correction is triggered as soon as the belt deviates, resulting in a fast response speed and the characteristics of adaptive correction and timely response. Attached Figure Description

[0018] Figure 1 The diagram shown is a first three-dimensional structural schematic of the coal mine transport conveyor of the present invention; Figure 2 The diagram shown is a second three-dimensional structural schematic of the coal mine transport conveyor of the present invention; Figure 3 The diagram shown is a third perspective structural schematic of the coal mine transport conveyor of the present invention; Figure 4 The diagram shown is a first cross-sectional view of the coal mine transport conveyor of the present invention. Figure 5 The diagram shown is a second cross-sectional view of the coal mine transport conveyor of the present invention. Figure 6 The diagram shown is a third cross-sectional view of the coal mine transport conveyor of the present invention. Figure 7 The diagram shown is a partial three-dimensional structural schematic of the coal mine transport conveyor of the present invention; Figure 8 The diagram shown is a partial cross-sectional view of the coal mine transport conveyor of the present invention. Figure 9 The diagram shown is a three-dimensional structural schematic of the second part of the coal mine transport conveyor of the present invention; Explanation of reference numerals in the attached drawings: 1. Frame; 2. First motor; 3. First shaft; 4. Conveyor roller; 5. Conveyor belt; 101. First moving frame; 102. Second motor; 103. Second shaft; 104. Connecting frame; 105. Third motor; 106. Third shaft; 107. Correcting roller; 108. Correcting fin; 201. First fixed frame; 202. Fourth motor; 203. First lead screw; 204. First lifting frame; 205. Fifth motor; 206. Second lead screw; 301. Second fixed frame; 302. Sixth motor; 303. Third lead screw; 304. Second lifting frame; 305. Connecting rod; 306. Tensioning roller; 401. Fixed groove; 402. Miniature telescopic rod; 403. Spring; 404. Connecting plate; 501. Base plate; 502. Air pump; 503. Nozzle. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please see Figure 1 , Figure 2 and Figure 3This invention provides an embodiment of a coal mine transport conveyor, comprising a frame 1, a first motor 2, a first rotating shaft 3, a conveyor roller 4, a conveyor belt 5, a correction assembly, and an adjustment assembly. The first motor 2 is located on one side of the frame 1, and the first rotating shaft 3 is located at the output end of the first motor 2. The conveyor roller 4 is located outside the first rotating shaft 3, and the conveyor belt 5 is located outside the conveyor roller 4. Two sets of correction assemblies are symmetrically arranged above the conveyor belt 5. An adjustment assembly is located above the frame 1. The correction assembly includes a first moving frame 101, a second motor 102, a second rotating shaft 103, a connecting frame 104, a third motor 105, a third rotating shaft 106, and a correction mechanism. The conveyor belt 5 is equipped with a first movable frame 101 above the conveyor belt 5, a second motor 102 above the first movable frame 101, a second rotating shaft 103 at the output end of the second motor 102, a connecting frame 104 at the lower end of the second rotating shaft 103, a third motor 105 on one side of the connecting frame 104, a third rotating shaft 106 at the output end of the third motor 105, a keyway connecting the third rotating shaft 106 to the outer side of the third rotating shaft 106, and multiple sets of corrective fins 108 arranged in a ring around the outer side of the corrective roller 107. The corrective fins 108 are inclined and made of flexible material.

[0021] Please see Figure 4 , Figure 5 and Figure 6 In this embodiment, the adjustment assembly includes a first fixed frame 201 and a fourth motor 202. The first fixed frame 201 is provided on one side of the frame 1, and the fourth motor 202 is provided above the first fixed frame 201. The adjustment assembly also includes a first lead screw 203 and a first lifting frame 204. The output end of the fourth motor 202 is provided with the first lead screw 203, and the outer side of the first lead screw 203 is threadedly connected to the first lifting frame 204. The adjustment assembly also includes a fifth motor 205 and a second lead screw 206. The fifth motor 205 is provided on one side of the first lifting frame 204, and the output end of the fifth motor 205 is provided with the second lead screw 206. The second lead screw 206 has two opposite threads. The second lead screw 206 is threadedly connected to two sets of first moving frames 101. In use, the fourth motor 202 is started to drive the first lead screw 203 to rotate. The rotation of the first lead screw 203 drives the first lifting frame 204 to move up and down. The up and down movement of the first lifting frame 204 adjusts the height of the correction roller 107. The fifth motor 205 is started to drive the second lead screw 206 to rotate. The rotation of the second lead screw 206 drives the two sets of first moving frames 101 to move linearly, thereby adjusting the position of the two sets of correction rollers 107 to adapt to conveyor belts of different sizes.

[0022] Please see Figure 7 , Figure 8 and Figure 9In this embodiment, a second fixed frame 301 is provided on the inner side of the frame 1. A sixth motor 302 is provided below the second fixed frame 301. A third lead screw 303 is provided at the output end of the sixth motor 302. A second lifting frame 304 is threadedly connected to the outer side of the third lead screw 303. A connecting rod 305 is rotatably connected to the inner side of the second lifting frame 304. A tension roller 306 is provided on the outer side of the connecting rod 305. In use, the sixth motor 302 is started to drive the third lead screw 303 to rotate. The rotation of the third lead screw 303 drives the second lifting frame 304 to move up and down. The height of the tension roller 306 is adjusted by the up and down movement of the second lifting frame 304. The outer surface of the tension roller 306 contacts the conveyor belt 5. Adjusting the height of the tension roller 306 can adjust the tension of the conveyor belt 5. Multiple sets of fixing grooves 401 are provided on the side of the tension roller 306. The multiple sets of fixing grooves 401 are distributed in a ring on the side of the tension roller 306. A tension roller 306 is provided on the inner side of the fixing grooves 401. A miniature telescopic rod 402 is provided with a spring 403 on its outer side. A connecting plate 404 is provided at one end of the miniature telescopic rod 402. The two ends of the spring 403 are connected to the connecting plate 404 and the tension roller 306, respectively. In use, the spring 403, the miniature telescopic rod 402 and the connecting plate 404 form an elastic damping structure on the inner side of the fixed groove 401. When the conveyor belt 5 is running, the conveyor belt 5 passing the position of the tension roller 306 is affected by the elastic damping structure and generates a slight vibration, shaking off some of the coal sludge or adhering materials attached to the surface of the conveyor belt 5. This prevents the long-term accumulation of coal sludge and adhering materials on the surface of the conveyor belt 5, which can lead to imbalance and aggravated wear. A base plate 501 is provided below the frame 1. An air pump 502 is provided above the base plate 501. A nozzle 503 is provided at the output end of the air pump 502. In use, by starting the air pump 502, the airflow is sprayed along the nozzle 503 onto the surface of the conveyor belt 5 to further remove the coal sludge and adhering materials on the surface of the conveyor belt 5.

[0023] During operation, the first motor 2 drives the first rotating shaft 3 to rotate, which in turn drives the conveyor belt 5 to circulate through the conveyor roller 4, thus achieving continuous conveying of coal and mineral materials. When the conveyor belt 5 deviates laterally, the correction component responds immediately: the second motor 102 drives the second rotating shaft 103 to rotate, adjusting the horizontal angle of the connecting frame 104 so that the correction roller 107 is aligned with the direction of deviation; the third motor 105 drives the third rotating shaft 106 to rotate, causing the flexible correction fins 108 on the outer edge of the correction roller 107 to contact the edge of the conveyor belt 5. The correction fins 108 are made of inclined flexible material (polyurethane composite material). When the edge of the conveyor belt 5 squeezes the fins, the fins are compressed and undergo elastic deformation. Their inclined surface decomposes the extrusion force into a vertical restoring force and a horizontal component force. The vertical force pushes the fins to reset, and the horizontal component force forms a reverse correction torque, guiding the conveyor belt 5 back to the center line. This process can be triggered without the belt deviation reaching a threshold, achieving instant correction of minor deviations and significantly reducing belt edge wear. The precise positioning of the alignment roller 107 is achieved through adjusting the components. Specifically, the fourth motor 202 drives the first lead screw 203 to rotate, which in turn moves the first lifting frame 204 vertically, adjusting the alignment roller 107 to a suitable height above the edge of the conveyor belt 5. The fifth motor 205 drives the second lead screw 206 to rotate, and its bidirectional thread structure enables the two sets of first moving frames 101 to move synchronously in opposite directions, precisely controlling the spacing of the alignment roller 107 to adapt to conveyor belts 5 of different widths. The tensioning system drives the third lead screw 303 to rotate through the sixth motor 302, which in turn moves the second lifting frame 304 vertically, adjusting the height of the tensioning roller 306 to change the tension of the conveyor belt 5. The tensioning roller 306 has an annularly distributed elastic damping structure (spring 403, miniature telescopic rod 402, and connecting plate 404) on its surface. When the conveyor belt 5 passes by, the elastic damping structure generates a slight vibration, shaking off the attached coal sludge. At the same time, the air pump 502 sprays high-pressure airflow onto the surface of the conveyor belt 5 through the nozzle 503 to further remove residual materials and prevent belt imbalance caused by material accumulation. During the operation of the conveyor, the belt alignment component continuously monitors the belt position. If the conveyor belt 5 deviates to one side, the alignment fins 108 on that side are compressed and deformed, generating a reverse alignment force, while the fins on the other side remain in light contact to avoid excessive intervention. The angle of the alignment roller 107 can be adjusted in real time by the second motor 102 to ensure that the direction of the alignment force is always perpendicular to the deviation trend. The tensioning system automatically adjusts the height of the tensioning roller 306 through the sixth motor 302 based on the feedback from the tension sensor of the conveyor belt 5 to maintain the optimal tension. The elastic damping structure of the cleaning system works in conjunction with the air pump 502 to vibrate and blow the conveyor belt 5 at regular intervals during its operation cycle to prevent coal slime from hardening and adhering. The entire system is linked with the control unit through a sensor network to achieve adaptive adjustment of the alignment, tensioning, and cleaning functions, significantly improving the stability of the conveyor operation and maintenance efficiency.

[0024] Through the above steps, the first motor 2 drives the first rotating shaft 3 to rotate, which in turn drives the conveyor roller 4 to rotate, and the conveyor roller 4 to rotate the conveyor belt 5, thus conveying the coal material on the conveyor belt 5. The first moving frame 101 is moved above the two sides of the conveyor belt 5. The second motor 102 is then started to drive the second rotating shaft 103 to rotate, which in turn drives the connecting frame 104 to rotate. The angle of the straightening roller 107 on the horizontal plane is adjusted by the rotation of the connecting frame 104. The third motor 105 is then started to drive the third rotating shaft 106 to rotate, which in turn drives the straightening roller 107 to rotate, and the straightening roller 107 to rotate the straightening fins 108. When the conveyor belt 5 is not misaligned, the straightening fins... The inclined edge of 108 hardly contacts or only slightly contacts the edge of the belt. When the conveyor belt 5 deviates outward, the edge of the deviated conveyor belt 5 will squeeze the correction fin 108 on that side. The correction fin 108 is deformed by the pressure, generating an elastic restoring force that pushes the correction fin 108 back to its original position. At the same time, it gives the edge of the conveyor belt 5 an inward reaction force. The inclined surface of the correction fin 108 will decompose the force on the edge of the conveyor belt 5 into a component along the center line of the conveyor belt 5, generating a small guiding torque to correct the laterally deviated conveyor belt 5. This device relies on the self-displacement of the belt structure to trigger the correction force. It uses a flexible correction structure to reduce the wear on the conveyor belt. The belt can trigger correction as soon as it deviates. It has a fast response speed and features adaptive correction and timely response.

[0025] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A coal mine transport conveyor, comprising a frame (1), a first motor (2), a first rotating shaft (3), a conveyor roller (4), and a conveyor belt (5), characterized in that: It also includes a correction component and an adjustment component. A first motor (2) is provided on one side of the frame (1). A first rotating shaft (3) is provided at the output end of the first motor (2). A conveyor roller (4) is provided on the outside of the first rotating shaft (3). A conveyor belt (5) is provided on the outside of the conveyor roller (4). Two sets of correction components are symmetrically arranged above the conveyor belt (5). An adjustment component is provided above the frame (1). The correction component includes a first moving frame (101), a second motor (102), a second rotating shaft (103), a connecting frame (104), a third motor (105), a third rotating shaft (106), a correction roller (107), and correction fins (108). Above the conveyor belt (5) A first movable frame (101) is provided, a second motor (102) is provided above the first movable frame (101), a second rotating shaft (103) is provided at the output end of the second motor (102), a connecting frame (104) is provided at the lower end of the second rotating shaft (103), a third motor (105) is provided on one side of the connecting frame (104), a third rotating shaft (106) is provided at the output end of the third motor (105), a correction roller (107) is connected to the keyway on the outer side of the third rotating shaft (106), and multiple sets of correction fins (108) are arranged in a ring on the outer side of the correction roller (107). The correction fins (108) are inclined and made of flexible material.

2. The coal mine conveyor according to claim 1, characterized in that: The adjustment assembly includes a first fixed frame (201) and a fourth motor (202). The first fixed frame (201) is provided on one side of the frame (1), and the fourth motor (202) is provided above the first fixed frame (201).

3. The coal mine conveyor according to claim 2, characterized in that: The adjustment assembly also includes a first lead screw (203) and a first lifting frame (204). The output end of the fourth motor (202) is provided with the first lead screw (203), and the outer side of the first lead screw (203) is threadedly connected to the first lifting frame (204).

4. The coal mine conveyor according to claim 3, characterized in that: The adjustment assembly also includes a fifth motor (205) and a second lead screw (206). The fifth motor (205) is provided on one side of the first lifting frame (204), and the output end of the fifth motor (205) is provided with a second lead screw (206). The second lead screw (206) has two opposite threads, and the second lead screw (206) is threadedly connected to two sets of first moving frames (101).

5. The coal mine conveyor according to claim 1, characterized in that: A second fixed frame (301) is provided on the inner side of the frame (1), and a sixth motor (302) is provided below the second fixed frame (301).

6. The coal mine conveyor according to claim 5, characterized in that: The output end of the sixth motor (302) is provided with a third lead screw (303), and the outer side of the third lead screw (303) is connected to the second lifting frame (304).

7. The coal mine conveyor according to claim 6, characterized in that: The inner side of the second lifting frame (304) is rotatably connected to a connecting rod (305), and a tensioning roller (306) is provided on the outer side of the connecting rod (305).

8. The coal mine conveyor according to claim 7, characterized in that: The tension roller (306) has multiple sets of fixing grooves (401) on its side. The multiple sets of fixing grooves (401) are arranged in a ring on the side of the tension roller (306). Miniature telescopic rods (402) are provided on the inner side of the fixing grooves (401).

9. The coal mine conveyor according to claim 8, characterized in that: A spring (403) is provided on the outside of the miniature telescopic rod (402), and a connecting plate (404) is provided at one end of the miniature telescopic rod (402). The two ends of the spring (403) are connected to the connecting plate (404) and the tension roller (306) respectively.

10. The coal mine conveyor according to claim 1, characterized in that: A base plate (501) is provided below the frame (1), and an air pump (502) is provided above the base plate (501). A nozzle (503) is provided at the output end of the air pump (502).

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