A conveyor belt supporting wheel device for trough conveyor

Abstract

The present invention relates to the field of material conveying equipment, and in particular to a conveyor belt roller device for a trough conveyor. The device comprises a wheel frame and two rollers; a first shaft rod parallel to the width direction of the conveyor belt is provided on the wheel frame, and the two rollers are both rotatably mounted on the first shaft rod and are both located below the belt body of the return section, and the outer peripheral surfaces of the two rollers are respectively abutted against the outer peripheral surface of a flat edge portion; the conveyor belt roller device also comprises a deviation correction component, which can force the conveyor belt to reset when the conveyor belt deviates in the width direction. It can avoid friction and wear between the rollers and the skirt, and also avoid frequent force on the skirt, thereby effectively extending the service life of the conveyor belt of the trough conveyor. In addition, it can also realize automatic deviation correction when the conveyor belt deviates laterally.

Description

Technical Field

[0001] The invention relates to the field of material conveying equipment, and in particular to a conveyor belt supporting wheel device for a trough conveyor. Background Art

[0002] When using a conveyor to transport materials, in order to prevent granular or powdered materials such as sand, coal powder, cement, grains, or loosely accumulated materials such as ore, gravel, or soil from spilling from both sides of the conveyor belt, a trough conveyor with side baffles is usually used for transportation. In the conveyor belt of the trough conveyor, the common side baffle form is the skirt, which is generally arranged on both sides of the outer surface of the conveyor belt along the length direction of the transmission belt, thereby forming a groove on the outer surface of the conveyor belt.

[0003] However, when the existing conveyor belt lower rollers are used to support the conveyor belt of the trough conveyor, the skirt of the conveyor belt is usually directly supported in the return section of the conveyor belt. On the one hand, the frequent friction between the lower rollers and the skirt at the contact position will aggravate the wear of the skirt end; on the other hand, the skirt will be frequently subjected to force (causing the skirt to bend in the width direction of the conveyor belt, causing the return section of the conveyor belt to be wavy, etc.), which can easily lead to failure of the connection between the skirt and the conveyor belt, resulting in the skirt falling off. Summary of the invention

[0004] The object of the present invention is to provide a conveyor belt supporting roller device for a trough conveyor, which can at least partially overcome the above-mentioned technical problems by supporting the flat edge position of the conveyor belt in the return section of the conveyor belt, thereby avoiding friction and wear between the supporting roller and the skirt, and avoiding frequent stress on the skirt, thereby effectively extending the service life of the conveyor belt of the trough conveyor.

[0005] The present invention provides a conveyor belt roller device for a trough conveyor, wherein the conveyor belt comprises a belt body and two skirts, wherein the two skirts are located on the outer peripheral surface of the belt body and are respectively located on both sides of the belt body along the width direction, and the two skirts divide the belt body into a groove portion and two flat edge portions respectively located on both sides of the groove portion along the width direction;

[0006] The conveyor belt roller device includes a wheel frame and two rollers; a first shaft rod parallel to the width direction of the conveyor belt is arranged on the wheel frame, and the two rollers are rotatably mounted on the first shaft rod and are both located below the belt body of the return section, and the outer peripheral surfaces of the two rollers are respectively abutted against the outer peripheral surface of one of the flat edge parts; the conveyor belt roller device also includes a deviation correction component, which can force the conveyor belt to reset when the conveyor belt deviates along the width direction.

[0007] Furthermore, a flexible covering layer is fixedly provided on the outer peripheral surface of the two supporting wheels.

[0008] Furthermore, a second shaft rod parallel to the width direction of the conveyor belt is also provided on the wheel frame; a pressure roller is also rotatably mounted on the second shaft rod and the pressure roller is located above the belt body of the return section, and the outer peripheral surface of the pressure roller abuts against the inner peripheral surface of the belt body of the return section.

[0009] Furthermore, the deviation correction component includes a base, a processor and two distance sensors; the base is fixedly arranged and located below the wheel frame, the wheel frame and the base are rotatably connected, and the rotating shaft of the base and the wheel frame relative to each other is parallel to the material conveying direction of the trough conveyor; the two distance sensors are respectively fixedly arranged on both sides of the wheel frame along the width direction of the conveyor belt; for any side of the wheel frame along the width direction of the conveyor belt, the distance sensor is located on the side of the flat edge portion of the side away from the other flat edge portion, and the distance sensor can monitor the distance value between it and the corresponding flat edge portion; an electrically controlled telescopic mechanism is also arranged on the base below the side of the wheel frame, the fixed end of the electrically controlled telescopic mechanism is fixedly connected to the base and the free end abuts against the wheel frame; the distance sensor and the electrically controlled telescopic mechanism are both electrically connected to the processor.

[0010] Furthermore, for any side of the wheel frame along the width direction of the conveyor belt, when the distance value monitored by the distance sensor on that side is less than a first preset threshold value, the processor controls the electrically-controlled telescopic mechanism on that side to contract and controls the electrically-controlled telescopic mechanism on the other side to extend, so that the wheel frame and the base rotate relative to each other and the pressure roller on that side is pressed downward.

[0011] Furthermore, the processor is electrically connected to the driving motor of the trough conveyor; for any side of the wheel frame along the width direction of the conveyor belt, when the distance value monitored by the distance sensor on that side is less than a second preset threshold, the processor controls the driving motor to stop.

[0012] Furthermore, the electrically controlled telescopic mechanism is selected from one of an electric push rod, a linear motor, an electrically controlled hydraulic cylinder and an electrically controlled pneumatic cylinder.

[0013] Furthermore, the conveyor belt roller device also includes two cleaning components located below the groove portion of the return section, and the two cleaning components are respectively arranged close to a supporting roller; the cleaning component includes a plate brush, a gear ring, an offset rod and a first gear, and the plate brush has a shaft rod portion and a brush bristle portion that are perpendicular to each other; for any cleaning component, a first bevel gear is fixedly connected to the shaft tube of the supporting roller on the side where the cleaning component is located, and a second bevel gear meshing with the first bevel gear is rotatably arranged on the wheel frame, and the rotating shaft of the second bevel gear is perpendicular to the belt body of the return section; one end of the offset rod is fixedly connected to the shaft rod of the second bevel gear, and the shaft rod portion is parallel to the shaft rod of the second bevel gear and is rotatably inserted into the other end of the offset rod; the brush bristle portion abuts against the outer peripheral surface of the groove portion of the return section; the gear ring is fixedly arranged on the wheel frame and is coaxial with the second bevel gear, and the first gear is fixedly sleeved on the shaft rod portion and meshed with the gear ring.

[0014] Furthermore, the cleaning assembly also includes a cylindrical brush, a connecting rod, a rack and a second gear; a slide groove parallel to the first shaft rod is provided on the wheel frame, and the shaft rod of the cylindrical brush is slidably inserted in the slide groove; the rack is parallel to the slide groove and fixedly connected to the wheel frame; the second gear is fixedly sleeved on the shaft rod of the cylindrical brush and meshes with the rack; the bristles of the cylindrical brush abut against the inner side wall of the skirt on the side where the cleaning assembly is located; the shaft rod portion is rotatably inserted at one end of the connecting rod, and the shaft rod of the cylindrical brush is parallel to the shaft rod of the second bevel gear and rotatably inserted at the other end of the connecting rod.

[0015] Furthermore, the bristles of the cylindrical brush are inserted on the circumferential surface of the shaft of the cylindrical brush, and each of the bristles is distributed in a spiral.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] 1. A conveyor belt supporting roller device for a trough conveyor provided in an embodiment of the present disclosure, by designing a special supporting roller device, uses the supporting roller to support the flat edge of the conveyor belt in the return section of the conveyor belt, thereby avoiding the contact between the skirt of the conveyor belt and the supporting member, thereby, the skirt does not rub against other components, greatly reducing the wear of the skirt, and under such supporting conditions, the skirt is not affected by other external forces, and the connection structure between the skirt and the belt body will not be fatigued and damaged due to the frequent external force squeezing of the skirt, which can effectively extend the service life of the conveyor belt of the trough conveyor;

[0018] 2. A conveyor belt supporting roller device for a trough conveyor provided by an embodiment of the present disclosure can monitor the distance between the distance sensor and the corresponding flat edge in real time by setting a distance sensor, thereby timely detecting the lateral deviation of the conveyor belt. Accordingly, when the distance value monitored by the distance sensor is less than a first preset threshold value, the processor can timely control the electric control telescopic mechanism on the side where the distance sensor is located to extend and retract, and control the electric control telescopic mechanism on the other side to extend, so that the wheel frame and the base rotate relative to each other, thereby expanding one side of the conveyor belt deviation direction, thereby forcing the conveyor belt to "deviate" in the reverse direction and reset, thereby realizing automatic deviation correction of the conveyor belt that has deviated;

[0019] 3. A conveyor belt roller device for a trough conveyor provided in an embodiment of the present disclosure can clean the outer surface of the conveyor belt and the inner wall of the skirt in time by setting a cleaning component. On the one hand, it can avoid material contamination caused by using the same trough conveyor for conveying multiple batches of different types of materials; on the other hand, it can avoid the conveyor belt being unable to bend and deform normally at both ends of the trough conveyor due to materials remaining on the conveyor belt surface and in the folds of the skirt for a long time, which is beneficial to extend the service life of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a trough conveyor according to an embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of a conveyor belt supporting roller device for a trough conveyor according to an embodiment of the present invention, wherein, in order to facilitate the display of the structure of the cleaning component, the skirt structure in the return section is depicted in the figure and the pressure roller is omitted;

[0023] Figure 3 Based on Figure 2 A partial enlarged view of area A is shown;

[0024] Figure 4 Based on Figure 2 A top view of a conveyor belt supporting roller device for a trough conveyor is shown;

[0025] Figure 5 A schematic diagram of the three-dimensional structure of a conveyor belt supporting roller device for a trough conveyor from another perspective according to an embodiment of the present invention, wherein the skirt and belt body structure in the return section are shown in the figure for the convenience of showing the structure of the cleaning component;

[0026] Figure 6 Based on Figure 5 A longitudinal sectional view of the conveyor belt supporting roller device for a trough conveyor is shown;

[0027] Figure 7 Based on Figure 6 A partial enlarged view of area B is shown.

[0028] Marks and corresponding parts names in the attached drawings:

[0029] 11-belt body; 12-skirt; 2-wheel frame; 21-first shaft rod; 22-second shaft rod; 23-slideway; 3-supporting roller; 31-coating layer; 4-pressure roller; 5-base; 6-distance sensor; 7-electrically controlled telescopic mechanism; 81-plate brush; 811-shaft rod part; 812-brush part; 82-gear ring; 83-bias rod; 84-first gear; 85-first bevel gear; 86-second bevel gear; 91-cylindrical brush; 92-connecting rod; 93-rack; 94-second gear. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation modes and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0031] Considering that when the existing conveyor belt lower roller is used to support the conveyor belt of the trough conveyor, it is usually to directly support the skirt of the conveyor belt in the return section of the conveyor belt. On the one hand, the frequent friction between the lower roller and the skirt contact position will aggravate the wear of the skirt end; on the other hand, the skirt will be frequently subjected to force (causing the skirt to be deflected in the width direction of the conveyor belt, causing the return section of the conveyor belt to be wavy, etc.), which may easily lead to failure of the connection between the skirt and the conveyor belt, resulting in the skirt falling off. The present invention provides a conveyor belt supporting roller device for a trough conveyor, which supports the flat edge of the conveyor belt in the return section of the conveyor belt, thereby avoiding friction and wear between the supporting roller and the skirt, and also avoiding frequent force on the skirt, thereby effectively extending the service life of the conveyor belt of the trough conveyor.

[0032] Embodiment 1:

[0033] like Figures 1 to 7 As shown, a conveyor belt supporting roller device for a trough conveyor, the conveyor belt comprises a belt body 11 and two skirts 12, the two skirts 12 are both located on the outer circumference of the belt body 11 and are respectively located on both sides of the belt body 11 along the width direction, and the two skirts 12 divide the belt body 11 into a groove portion and two flat edge portions respectively located on both sides of the groove portion along the width direction; specifically,

[0034] The conveyor belt supporting roller device comprises a wheel frame 2 and two supporting rollers 3;

[0035] A first shaft 21 parallel to the width direction of the conveyor belt is provided on the wheel frame 2, and the two supporting wheels 3 are both rotatably mounted on the first shaft 21 and are both located below the belt body 11 of the return section, and the outer circumferences of the two supporting wheels 3 are respectively in contact with the outer circumference of one of the flat edge portions;

[0036] The conveyor belt supporting roller device further comprises a deviation correction component, which can force the conveyor belt to reset when the conveyor belt deviates in the width direction.

[0037] The conveyor belt dedicated to the trough conveyor is assembled from the skirt 12 and the belt body 11 which are manufactured separately. The skirt 12 and the belt body 11 are usually connected as a whole by mechanical connection means such as bonding, hot welding and bolts. When the skirt 12 is frequently subjected to force, the connection is very likely to fail, resulting in the skirt 12 falling off. This embodiment designs a dedicated roller device and uses the roller 3 to support the flat edge of the conveyor belt in the return section of the conveyor belt, thereby avoiding the contact between the skirt 12 of the conveyor belt and the support member. As a result, the skirt 12 does not rub against other components, greatly reducing the wear of the skirt 12. Under such support conditions, the skirt 12 is not affected by other external forces, and the connection structure between the skirt 12 and the belt body 11 will not be fatigued and damaged due to the frequent external force squeezing of the skirt 12, which can effectively extend the service life of the conveyor belt of the trough conveyor.

[0038] Preferably, a flexible coating layer 31 is fixedly provided on the outer circumferential surface of the two supporting wheels 3. The flexible coating layer 31 is preferably made of rubber.

[0039] By fixing a flexible coating layer 31 on the outer circumferential surface of the supporting roller 3 and utilizing the contact between the flexible coating layer 31 and the conveyor belt, damage caused by the supporting roller 3 to the conveyor belt can be reduced; and the provision of the flexible coating layer 31 can increase the friction between the supporting roller 3 and the flat edge portion, thereby, the supporting roller 3 rotates around the first shaft 21 when the conveyor belt is running, reducing the relative sliding between the flat edge portion and the supporting roller 3, thereby reducing the wear of the flat edge portion and preventing the edge of the conveyor belt from fuzzing.

[0040] More preferably, a second shaft 22 parallel to the width direction of the conveyor belt is also provided on the wheel frame 2;

[0041] A pressure roller 4 is also rotatably mounted on the second shaft 22 and is located above the belt body 11 of the return section, and the outer circumference of the pressure roller 4 abuts against the inner circumference of the belt body 11 of the return section. Obviously, a flexible coating layer 31 may also be provided on the outer circumference of the pressure roller 4.

[0042] By providing the pressure roller 4, the flat edge portion can be "clamped" between the pressure roller 4 and the supporting roller 3. On the one hand, it can prevent the conveyor belt in the return section from having a concave groove in the middle because only the flat edges on both sides are supported, which is beneficial for maintaining the conveyor belt in the return section in the correct shape. On the other hand, under the clamping action of the pressure roller 4 and the supporting roller 3, the friction force that needs to be overcome for the lateral deviation of the conveyor belt is greater, which can effectively reduce the frequency of the conveyor belt deviation. In addition, the clamping effect can further reduce the probability of relative sliding between the supporting roller 3 and the flat edge portion along the running direction of the conveyor belt.

[0043] Specifically, the deviation correction component includes a base 5, a processor and two distance sensors 6;

[0044] The base 5 is fixedly arranged and located below the wheel frame 2, the wheel frame 2 and the base 5 are rotatably connected, and the rotation axis of the base 5 and the wheel frame 2 that rotates relative to each other is parallel to the material conveying direction of the trough conveyor; the two distance sensors 6 are respectively fixedly arranged on both sides of the wheel frame 2 along the width direction of the conveyor belt;

[0045] For any side of the wheel frame 2 along the width direction of the conveyor belt, the distance sensor 6 is located on the side of the flat edge portion away from the other flat edge portion, and the distance sensor 6 can monitor the distance value between it and the corresponding flat edge portion; an electrically controlled telescopic mechanism 7 is also provided on the base 5 below the side of the wheel frame 2, and the fixed end of the electrically controlled telescopic mechanism 7 is fixedly connected to the base 5 and the free end abuts against the wheel frame 2; the distance sensor 6 and the electrically controlled telescopic mechanism 7 are both electrically connected to the processor.

[0046] Specifically, the electrically controlled telescopic mechanism 7 is selected from one of an electric push rod, a linear motor, an electrically controlled hydraulic cylinder and an electrically controlled pneumatic cylinder.

[0047] For any side of the wheel frame 2 along the width direction of the conveyor belt, when the distance value monitored by the distance sensor 6 on this side is less than the first preset threshold value, the processor controls the electric control telescopic mechanism 7 on this side to contract and controls the electric control telescopic mechanism 7 on the other side to extend, so that the wheel frame 2 and the base 5 rotate relative to each other so that the pressure roller 4 on this side is pressed down. It should be understood that the setting position of the distance sensor 6 is preferably at the same height as the flat edge of the return section and coplanar with the first shaft 21 and the second shaft 22.

[0048] By setting up the distance sensor 6, the distance between the distance sensor 6 and the corresponding flat edge can be monitored in real time, so as to timely detect the lateral deviation of the conveyor belt (if the distance value monitored by the distance sensor 6 becomes smaller, it means that the conveyor belt deviates toward the distance sensor 6). Accordingly, when the distance value monitored by the distance sensor 6 is less than the first preset threshold value, the processor can timely control the electric control telescopic mechanism 7 on the side where the distance sensor 6 is located to retract and extend, and control the electric control telescopic mechanism 7 on the other side to extend, so that the wheel frame 2 and the base 5 rotate relative to each other, thereby expanding one side of the conveyor belt deviation direction, and forcing the conveyor belt to "deviate" in the opposite direction and reset, thereby realizing automatic deviation correction of the deviated conveyor belt.

[0049] More preferably, the processor is electrically connected to a drive motor of the trough conveyor;

[0050] For any side of the wheel frame 2 along the width direction of the conveyor belt, when the distance value monitored by the distance sensor 6 on this side is less than the second preset threshold, the processor controls the drive motor to stop. It should be understood that the second preset threshold is less than the first preset threshold.

[0051] Accordingly, when the deviation correction is performed by rotating the wheel frame 2, the distance value monitored by the distance sensor 6 continues to decrease (from the first preset threshold value to the second preset threshold value), indicating that under the current working condition of the trough conveyor, the above-mentioned "automatic deviation correction" can no longer automatically reset the conveyor belt. At this time, the processor promptly cuts off the power input of the driving motor of the trough conveyor, thereby preventing the trough conveyor from continuing to run and the skirt 12 abutting against the side of the support roller 3, resulting in failure of the connection between the skirt 12 and the belt body 11.

[0052] Embodiment 2:

[0053] This embodiment is based on the embodiment 1, and the difference is that, in this embodiment, the conveyor belt supporting roller device further comprises two cleaning components located below the groove portion of the return section, and the two cleaning components are respectively arranged close to a supporting roller 3;

[0054] The cleaning assembly includes a scrub brush 81, a gear ring 82, a biasing rod 83 and a first gear 84, wherein the scrub brush 81 has a shaft portion 811 and a bristle portion 812 which are perpendicular to each other;

[0055] For any cleaning assembly, a first bevel gear 85 is fixedly connected to the shaft tube of the supporting wheel 3 on the side where the cleaning assembly is located, and a second bevel gear 86 meshing with the first bevel gear 85 is rotatably arranged on the wheel frame 2, and the rotating shaft of the second bevel gear 86 is perpendicular to the belt body 11 of the return section;

[0056] One end of the bias rod 83 is fixedly connected to the shaft of the second bevel gear 86, and the shaft portion 811 is parallel to the shaft of the second bevel gear 86 and is rotatably inserted at the other end of the bias rod 83; the bristle portion 812 abuts against the outer peripheral surface of the groove portion of the return section;

[0057] The gear ring 82 is fixedly disposed on the wheel frame 2 and is coaxial with the second bevel gear 86 . The first gear 84 is fixedly sleeved on the shaft portion 811 and meshes with the gear ring 82 .

[0058] Accordingly, during the operation of the conveyor belt, the supporting roller 3 rotates around the first shaft 21 under the action of the flat edge portion. Since the first bevel gear 85 and the supporting roller 3 are fixedly connected, the second bevel gear 86 rotates under the action of the rotation of the supporting roller 3. The rotation of the second bevel gear 86 causes the shaft portion 811 of the disc brush 81 to rotate around the shaft of the second bevel gear 86, and the first gear 84 fixed on the shaft portion 811 and the gear ring 82 fixed on the wheel frame 2 are engaged, so that the shaft portion 811 also rotates while rotating around the shaft of the second gear 94. As a result, the bristle portion 812 of the disc brush 81 can clean the outer surface of the groove portion of the conveyor belt in the return section along a more complex path, compared with simple linear sweeping (for example, a fixed brush is set under the conveyor belt, and cleaning is achieved by using the linear relative motion between the conveyor belt and the brush) or rotational sweeping (for example, a rotating brush with a rotating shaft perpendicular to the surface of the conveyor belt is set under the conveyor belt for cleaning). , avoiding the "path blind area" caused by simple cleaning (for example, in the case of linear cleaning, when the bristles are cleaning the dirt adhering to the surface of the conveyor belt, part of the dirt is swept away, while the remaining dirt remains on the path formed by the gaps between the bristles, presenting a phenomenon of stubborn residues distributed in a straight line); in addition, since the shaft portion 811 of the plate brush 81 is offset relative to the shaft portion of the second bevel gear 86, during the movement of the brush portions of the two plate brushes 81, the two brush portions have overlapping areas in the cleaning paths of the middle area of ​​the conveyor belt (the projection on the horizontal plane is located between the shafts of the two second bevel gears 86), which can enhance the cleaning effect of the middle area and adapt to the cleaning requirements of more residual material and more compact residual material in the middle area caused by the middle area of ​​the conveyor belt carrying more materials under normal working conditions; by timely cleaning the groove portion of the conveyor belt, it can avoid material contamination caused by the same trough conveyor being used for conveying multiple batches of different types of materials.

[0059] More preferably, the cleaning assembly further comprises a cylindrical brush 91, a connecting rod 92, a rack 93 and a second gear 94;

[0060] A slide groove 23 parallel to the first shaft 21 is provided on the wheel frame 2, and the shaft of the cylindrical brush 91 is slidably inserted in the slide groove 23; the rack 93 is parallel to the slide groove 23 and fixedly connected to the wheel frame 2; the second gear 94 is fixedly sleeved on the shaft of the cylindrical brush 91 and meshes with the rack 93; the bristles of the cylindrical brush 91 abut against the inner side wall of the skirt 12 on the side where the cleaning component is located;

[0061] The shaft portion 811 is rotatably inserted at one end of the connecting rod 92 , and the shaft of the cylindrical brush 91 is parallel to the shaft of the second bevel gear 86 and is rotatably inserted at the other end of the connecting rod 92 .

[0062] Accordingly, while the plate brush 81 cleans the outer surface of the groove portion of the conveyor belt in the return section, the connecting rod 92 drives the cylindrical brush 91 to move back and forth along the slide groove 23, and while the cylindrical brush 91 moves back and forth, under the meshing action of the rack 93 and the second gear 94, the cylindrical brush 91 rotates on its own, thereby, the cylindrical brush 91 can clean the inner wall of the skirt 12. By timely cleaning the residual materials remaining on the inner wall of the skirt 12, it can be avoided that the "folds" of the skirt 12 cannot open and close normally when the skirt 12 runs to the two ends of the trough conveyor due to the materials remaining in the "folds" of the skirt 12 for a long time (for example, cement, quicklime and other materials that remain for too long will be tightly bonded to the inner side of the folds of the skirt 12), which is beneficial to extend the service life of the conveyor belt.

[0063] It should be understood that, since the cylindrical brush 91 is performing reciprocating linear motion, by adjusting and setting an appropriate transmission ratio, the reciprocating linear motion of the cylindrical brush 91 can be made to fit the concave-convex shape of the side wall of the skirt 12, thereby avoiding the situation where the cylindrical brush 91 interferes with the operation of the skirt 12. In addition, the reciprocating linear motion enables the bristles of the cylindrical brush 91 to always abut against the inner side wall of the skirt 12 and thus continuously clean the inner side wall of the skirt 12. Obviously, in order to make the bristles of the cylindrical brush 91 always abut against the inner side wall of the skirt 12, the stroke of the reciprocating linear motion should satisfy that when the cylindrical brush 91 is in the first extreme position, the cylindrical brush 91 is just in the concave part of the skirt 12 facing the groove part (such as Figure 2 The cylindrical brush 91 on the left side is in the second limit position, and the cylindrical brush 91 is just at the convex part of the skirt 12 facing the groove part (such as Figure 2 Cylindrical brush 91 on the right).

[0064] Preferably, the bristles of the cylindrical brush 91 are inserted on the circumferential surface of the shaft of the cylindrical brush 91, and each of the bristles is distributed in a spiral. Therefore, when the cylindrical brush 91 cleans the inner wall of the skirt 12 by self-rotation, the spirally distributed bristles can reduce the existence of blind spots in the cleaning path, thereby optimizing the cleaning effect on the inner wall of the skirt 12.

[0065] It should be understood that, in the present application, the terms "rotational connection", "rotational installation", "rotational setting" and "rotational insertion" mean that only relative rotation can occur between the two, and axial relative movement cannot occur. The means for limiting the axial relative movement between the two is, for example, to respectively set shoulders and annular grooves at the rotational matching positions of the two.

[0066] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A conveyor belt supporting roller device for a trough conveyor, the conveyor belt comprising a belt body (11) and two skirts (12), the two skirts (12) are both located on the outer peripheral surface of the belt body (11) and are respectively located on both sides of the belt body (11) along the width direction, the two skirts (12) divide the belt body (11) into a groove portion and two flat edge portions respectively located on both sides of the groove portion along the width direction; characterized in that: The conveyor belt supporting roller device comprises a wheel frame (2) and two supporting rollers (3); A first shaft (21) parallel to the width direction of the conveyor belt is provided on the wheel frame (2), the two supporting wheels (3) are both rotatably mounted on the first shaft (21) and are both located below the belt body (11) of the return section, and the outer circumferences of the two supporting wheels (3) are respectively in contact with the outer circumference of one of the flat edge portions; The conveyor belt supporting roller device further comprises a deviation correction component, which can force the conveyor belt to reset when the conveyor belt deviates in the width direction; The conveyor belt supporting roller device further comprises two cleaning components located below the groove portion of the return section, and the two cleaning components are respectively arranged close to a supporting roller (3); The cleaning assembly comprises a scrub brush (81), a gear ring (82), a biasing rod (83) and a first gear (84); the scrub brush (81) comprises a shaft portion (811) and a bristle portion (812) which are perpendicular to each other; For any cleaning assembly, a first bevel gear (85) is fixedly connected to the shaft tube of the supporting wheel (3) on the side where the cleaning assembly is located, and a second bevel gear (86) meshing with the first bevel gear (85) is rotatably arranged on the wheel frame (2), and the rotating shaft of the second bevel gear (86) is perpendicular to the belt body (11) of the return section; One end of the bias rod (83) is fixedly connected to the shaft of the second bevel gear (86); the shaft portion (811) is parallel to the shaft of the second bevel gear (86) and is rotatably inserted into the other end of the bias rod (83); the bristle portion (812) abuts against the outer peripheral surface of the groove portion of the return section; The gear ring (82) is fixedly disposed on the wheel frame (2) and is coaxial with the second bevel gear (86); the first gear (84) is fixedly sleeved on the shaft portion (811) and meshes with the gear ring (82); The cleaning assembly further comprises a cylindrical brush (91), a connecting rod (92), a rack (93) and a second gear (94); A slide groove (23) parallel to the first shaft (21) is provided on the wheel frame (2), and the shaft of the cylindrical brush (91) is slidably inserted in the slide groove (23); the rack (93) is parallel to the slide groove (23) and is fixedly connected to the wheel frame (2); the second gear (94) is fixedly sleeved on the shaft of the cylindrical brush (91) and meshes with the rack (93); the bristles of the cylindrical brush (91) abut against the inner side wall of the skirt (12) on the side where the cleaning component is located; The shaft portion (811) is rotatably inserted into one end of the connecting rod (92); the shaft of the cylindrical brush (91) is parallel to the shaft of the second bevel gear (86) and is rotatably inserted into the other end of the connecting rod (92).

2. The conveyor belt supporting roller device for a trough conveyor according to claim 1, characterized in that: A flexible coating layer (31) is fixedly arranged on the outer circumferential surface of the two supporting wheels (3).

3. The conveyor belt supporting roller device for a trough conveyor according to claim 2, characterized in that: A second shaft (22) parallel to the width direction of the conveyor belt is also provided on the wheel frame (2); A pressure roller (4) is also rotatably mounted on the second shaft (22) and the pressure roller (4) is located above the belt body (11) of the return section, and the outer peripheral surface of the pressure roller (4) abuts against the inner peripheral surface of the belt body (11) of the return section.

4. The conveyor belt supporting roller device for a trough conveyor according to claim 3, characterized in that: The deviation correction component comprises a base (5), a processor and two distance sensors (6); The base (5) is fixedly arranged and located below the wheel frame (2); the wheel frame (2) and the base (5) are rotatably connected; the rotation axis of the base (5) and the wheel frame (2) for relative rotation is parallel to the material conveying direction of the trough conveyor; the two distance sensors (6) are respectively fixedly arranged on both sides of the wheel frame (2) along the width direction of the conveyor belt; For any side of the wheel frame (2) along the width direction of the conveyor belt, the distance sensor (6) is located on the side of the flat edge portion of the side away from the other flat edge portion, and the distance sensor (6) is capable of monitoring the distance value between it and the corresponding flat edge portion; an electric-controlled telescopic mechanism (7) is also arranged on the base (5) below the side of the wheel frame (2), and the fixed end of the electric-controlled telescopic mechanism (7) is fixedly connected to the base (5) and the free end abuts against the wheel frame (2); the distance sensor (6) and the electric-controlled telescopic mechanism (7) are both electrically connected to the processor.

5. The conveyor belt supporting roller device for a trough conveyor according to claim 4, characterized in that: For any side of the wheel frame (2) along the width direction of the conveyor belt, when the distance value monitored by the distance sensor (6) on that side is less than a first preset threshold value, the processor controls the electric-controlled telescopic mechanism (7) on that side to contract and controls the electric-controlled telescopic mechanism (7) on the other side to extend, so that the wheel frame (2) and the base (5) rotate relative to each other, so that the pressure roller (4) on that side is pressed downward.

6. The conveyor belt supporting roller device for a trough conveyor according to claim 4, characterized in that: The processor is electrically connected to a drive motor of the trough conveyor; For any side of the wheel frame (2) along the width direction of the conveyor belt, when the distance value monitored by the distance sensor (6) on this side is less than a second preset threshold, the processor controls the drive motor to stop.

7. The conveyor belt supporting roller device for a trough conveyor according to claim 4, characterized in that: The electrically controlled telescopic mechanism (7) is selected from one of an electric push rod, a linear motor, an electrically controlled hydraulic cylinder and an electrically controlled pneumatic cylinder.

8. The conveyor belt supporting roller device for a trough conveyor according to claim 1, characterized in that: The bristles of the cylindrical brush (91) are inserted on the circumferential surface of the shaft of the cylindrical brush (91), and each of the bristles is distributed in a spiral.

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