Belt conveying device

Abstract

The utility model relates to a belt conveying device which comprises a main body support, a conveying belt, a belt driving mechanism and an anti-deviation mechanism. Each anti-deviation mechanism comprises a check ring, and an annular groove allowing the edge of the conveying belt to penetrate through is formed in the side face of each check ring. The conveying belt can be driven by the belt driving mechanism to operate around the main body support so as to convey materials. When the conveying belt deviates towards any side in the width direction in the operation process, the edge of the conveying belt extends into the annular groove of the check ring on the side and makes contact with the bottom of the annular groove, and therefore the tendency that the conveying belt deviates towards the side is blocked. In addition, the annular groove can well limit the edge of the conveying belt, and the conditions of edge curling, groove disengaging and the like of the conveying belt can be effectively avoided. Along with the continuous operation of the transmission belt and the rotation of the check ring, the off-tracking transmission belt is gradually corrected under the action of the drawing force of the transmission belt and the thrust of the check ring. Therefore, the belt conveying device can effectively prevent the conveying belt from deviating.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, and in particular to a belt conveyor device. Background Technology

[0002] In belt conveyor mechanisms, belt misalignment can occur during operation due to factors such as the parallelism and cylindricity of the conveyor rollers, the parallelism of the mounting base plate, the parallelism of the belt sides, and deviations in the inner circumference. Once the belt misaligns, the position of the conveyed product will fluctuate, affecting subsequent gripping. Furthermore, belt misalignment accelerates wear, shortening its service life and impacting equipment stability. Utility Model Content

[0003] Therefore, it is necessary to provide a belt conveyor device that can effectively prevent belt misalignment in order to address the above problems.

[0004] A belt conveyor includes a main support, a transmission belt, a belt drive mechanism, and an anti-deviation mechanism. The transmission belt is wound around the main support and can operate under the drive of the belt drive mechanism. The anti-deviation mechanism is installed on the main support and distributed on both sides of the transmission belt in the width direction. Each anti-deviation mechanism includes a retaining ring, which can rotate about a rotation axis, and the side of the retaining ring has an annular groove through which the edge of the transmission belt passes.

[0005] In one embodiment, a plurality of anti-deviation mechanisms are distributed on each side of the width direction of the transmission belt, and the plurality of anti-deviation mechanisms are spaced apart along the extension direction of the transmission belt.

[0006] In one embodiment, the position of the retaining ring relative to the transmission belt is adjustable in the width direction of the transmission belt.

[0007] In one embodiment, the anti-deviation mechanism further includes a mounting base, an adjusting plate, and a rotary bearing. The mounting base is mounted on the main support, the adjusting plate is mounted on the mounting base, the inner ring of the rotary bearing is fixed to the adjusting plate, and the retaining ring is sleeved on the outer ring of the rotary bearing.

[0008] In one embodiment, the adjusting plate has a strip-shaped hole extending along the width direction of the transmission belt, and the adjusting plate is mounted to the mounting base by a first bolt passing through the strip-shaped hole and threadedly connected to the mounting base.

[0009] In one embodiment, the belt drive mechanism includes a drive connecting plate, a drive roller, and a power element. The drive connecting plate is fixed on both sides of the main support in the width direction. The drive roller is rotatably mounted on the drive connecting plate and is connected to the power element for transmission. The transmission belt passes around the drive roller.

[0010] In one embodiment, the belt drive mechanism further includes a tension roller mounted on the drive connecting plate, the transmission belt passing around the tension roller, and the position of the tension roller relative to the drive connecting plate is adjustable to adjust the tension of the transmission belt.

[0011] In one embodiment, the drive connecting plate has a strip-shaped mounting hole with graduations on the edge. The tension roller is slidably mounted in the mounting hole. The belt drive mechanism also includes an adjusting screw, which is screwed into the drive connecting plate and has one end connected to the tension roller.

[0012] In one embodiment, a detection component is further included on both sides of the transmission belt in the width direction. The detection component includes a detection sensor that can issue an alarm signal when the offset of the transmission belt exceeds a preset value.

[0013] In one embodiment, the detection assembly further includes a mounting plate and an adjustment platform. The mounting plate is fixed to the main support, the adjustment platform is mounted on the mounting plate, and the detection sensor is mounted on the adjustment platform. The adjustment platform can drive the detection sensor to move along the width direction of the transmission belt.

[0014] In one embodiment, the system further includes a negative pressure cavity installed on the main support, the negative pressure cavity extending along the conveying direction of the conveyor belt, the conveyor belt passing through the negative pressure cavity, the negative pressure cavity having a through hole on its top surface facing the conveyor belt, and the surface of the conveyor belt having a vent hole.

[0015] In one embodiment, the interior of the negative pressure cavity has multiple negative pressure cavities formed along its length, and each negative pressure cavity is connected to a corresponding through hole.

[0016] In the aforementioned belt conveyor, the conveyor belt rotates around the main support under the drive of the belt drive mechanism, thereby conveying materials. When the conveyor belt deviates to either side in the width direction during operation, the edge of the conveyor belt extends into the annular groove of the retaining ring on that side and contacts the bottom of the annular groove, thus blocking the tendency of the conveyor belt to deviate to that side. Moreover, the annular groove can effectively limit the edge of the conveyor belt, effectively preventing the conveyor belt from curling or derailing. As the conveyor belt continues to run and the retaining ring rotates, the deviated conveyor belt will gradually be corrected under its own tensile force and the thrust of the retaining ring. Therefore, the aforementioned belt conveyor can effectively prevent the conveyor belt from deviating. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the belt conveyor device in one embodiment of the present invention;

[0019] Figure 2 for Figure 1 Top view of the belt conveyor shown;

[0020] Figure 3 for Figure 2 The belt conveyor shown is a cross-sectional view along BB.

[0021] Figure 4 for Figure 1 An enlarged schematic diagram of part A in the belt conveyor device shown;

[0022] Figure 5 for Figure 1 The diagram shows the structure of the anti-deviation mechanism in the belt conveyor.

[0023] Figure 6 for Figure 5 The front view of the anti-deviation mechanism shown;

[0024] Figure 7 for Figure 6 The cross-sectional view of the anti-deviation mechanism shown along CC.

[0025] Figure 8 for Figure 1 The diagram shows the structure of the detection component in the belt conveyor device. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0032] Please see Figures 1 to 3 In one embodiment of the present invention, the belt conveyor device 10 includes a main support 100, a transmission belt 200, a belt drive mechanism 300, and an anti-deviation mechanism 400.

[0033] The main support frame 100 can be assembled from profiles and serves a supporting function. Depending on the length requirements of the belt conveyor 10, the main support frame 100 can be elongated or may include multiple independent and spaced-apart support structures. The conveyor belt 200 is wound around the main support frame 100 and can operate under the drive of the belt drive mechanism 300, thereby conveying materials. Specifically, auxiliary roller assemblies 110 are provided at both ends of the main support frame 100, each auxiliary roller assembly 110 including elements such as guide rollers and deflector rollers. The conveyor belt 200 sequentially winds around each guide roller and deflector roller, thus forming a loop on the main support frame 100.

[0034] Specifically, in this embodiment, the belt conveyor 10 further includes a negative pressure chamber 500, which is mounted on the main support 100 and extends along the conveying direction of the conveyor belt 200. The conveyor belt 200 passes through the negative pressure chamber 500, which has a through hole (not shown) on its top surface facing the conveyor belt 200, and a vent hole (not shown) is provided on the surface of the conveyor belt 200.

[0035] The negative pressure chamber 500 can be composed of a tank and a cover plate for sealing the tank. A negative pressure cavity is formed inside the negative pressure chamber 500, which can be connected to an external negative pressure device through a negative pressure pipe 510, thereby creating negative pressure within the negative pressure cavity. The through-hole on the top surface of the negative pressure chamber 500 communicates with the negative pressure cavity, while the vent holes on the surface of the conveyor belt 200 communicate with the through-hole, thus creating a negative adsorption force on the surface of the conveyor belt 200. Therefore, it can stably adsorb the conveyed material, achieving stable material conveying.

[0036] Furthermore, in this embodiment, multiple negative pressure chambers are formed along the length of the negative pressure chamber 500, each of which is connected to a corresponding through hole. Correspondingly, multiple negative pressure pipes 510 are provided on the outside of the negative pressure chamber 500 to evacuate the multiple negative pressure chambers respectively. The multiple negative pressure chambers are independent of each other and do not affect each other, making it difficult for vacuum leakage to occur between them. Therefore, the uniformity and stability of the negative pressure inside the negative pressure chamber 500 can be ensured, thereby further improving the stability of materials during the conveying and transfer process.

[0037] The belt drive mechanism 300 provides driving force to the transmission belt 200, thereby causing the transmission belt 200 to run along a predetermined path. Please refer to the following: Figure 4 And refer again Figure 3 In this embodiment, the belt drive mechanism 300 includes a drive connecting plate 310, a drive roller 320 and a power element 330. The drive connecting plate 310 is fixed on both sides of the main support 100 in the width direction. The drive roller 320 is rotatably mounted on the drive connecting plate 310 and is connected to the power element 330 for transmission. The transmission belt 200 passes around the drive roller 320.

[0038] The power element 330 generally includes a motor and a reducer, which drives the drive roller 320 to rotate, thereby driving the transmission belt 200 to rotate. The drive connecting plate 310 can be connected to the main support 100 by fixing it to the transition plate 360, which is fixed to the bottom of the negative pressure cavity 500. The two drive connecting plates 310 are respectively fixed to both ends of the transition plate 360. Of course, the drive connecting plates 310 can also be directly fixed to the main support 100 or the negative pressure cavity 500. In order to increase the overall rigidity, each drive connecting plate 310 is also provided with a reinforcing rib 370, and the two ends of the reinforcing rib 370 are respectively connected to the two drive connecting plates 310.

[0039] In addition, in this embodiment, the belt drive mechanism 300 also includes a tension roller 340 mounted on the drive connecting plate 310, the transmission belt 200 passes around the tension roller 340, and the position of the tension roller 340 relative to the drive connecting plate 310 is adjustable to adjust the tension of the transmission belt 200.

[0040] Due to dimensional deviations in the conveyor belt 200 and errors in the overall dimensions of the belt conveyor device 10, the conveyor belt 200 may be too loose or too tight after assembly. Furthermore, the conveyor belt 200 may experience fatigue after prolonged use, leading to changes in tension. Adjusting the tension of the conveyor belt 200 by moving the tension roller 340 ensures that the conveyor belt 200 is in an optimal tension state. Generally, two tension rollers 340 are provided, located on either side of the drive roller 320.

[0041] Furthermore, in this embodiment, the drive connecting plate 310 has a strip-shaped mounting hole 311, the edge of the mounting hole 311 is provided with a scale 312, the tension roller 340 is slidably mounted in the mounting hole 311, and the belt drive mechanism 300 also includes an adjusting screw 350, which is screwed into the drive connecting plate 310 and one end is connected to the tension roller 340.

[0042] By rotating the adjusting screw 350, the tension roller 340 can be driven to slide along the mounting hole 311, thereby adjusting the tension of the transmission belt 200. This adjustment method is relatively convenient. Moreover, the scale 312 on the edge of the mounting hole 311 can display the displacement of the tension roller 340, that is, the amount of tension of the transmission belt 200, thus facilitating manual control of the adjustment amount.

[0043] Please refer to it again. Figure 2 See also Figure 5 Anti-deviation mechanisms 400 are mounted on the main support 100 and distributed on both sides of the transmission belt 200 in the width direction. Each anti-deviation mechanism 400 includes a retaining ring 410, which is rotatable about a rotation axis, and the side of the retaining ring 410 has an annular groove 411 through which the edge of the transmission belt 200 passes. Optionally, the rotation axis of the retaining ring 410 is perpendicular to the bearing surface of the transmission belt 200.

[0044] During normal operation of the belt conveyor 10, the edge of the conveyor belt 200 may or may not extend into the annular groove 411 of the two side retaining rings 410. When the conveyor belt 200 deviates to either side in the width direction during operation, the edge of the conveyor belt 200 will shift to that side and extend into the annular groove 411 of that side retaining ring until it contacts the bottom of the annular groove 411, thereby blocking the tendency of the conveyor belt 200 to deviate to that side.

[0045] Moreover, the annular groove 411 can effectively limit the edge of the transmission belt 200, thus preventing the transmission belt 200 from curling or derailing. As the transmission belt 200 continues to run and the retaining ring 410 rotates, the misaligned transmission belt 200 will be gradually corrected under its own tension and the thrust of the retaining ring 410, thereby effectively preventing misalignment.

[0046] Typically, the width of the annular groove 411 should be greater than the thickness of the transmission belt 200 but less than twice that thickness. Furthermore, the depth of the annular groove 411 should be greater than three times the thickness of the transmission belt 200. Specifically, in this embodiment, the thickness of the transmission belt 200 is approximately 1.5 mm, so the width of the annular groove 411 is set to 2 mm, and the depth is set to 6 mm.

[0047] In this embodiment, a plurality of anti-deviation mechanisms 400 are distributed on each side of the width direction of the transmission belt 200, and the plurality of anti-deviation mechanisms 400 are spaced apart along the extension direction of the transmission belt 200.

[0048] The specific number and location of the anti-deviation mechanism 400 on each side can be set according to requirements. Optionally, in this embodiment, three anti-deviation mechanisms 400 are set on each side, located at both ends and the middle of the main support 100, respectively. The combined effect of multiple anti-deviation mechanisms 400 on the correction of the conveyor belt 200 is better.

[0049] Furthermore, in this embodiment, the position of the retaining ring 410 relative to the transmission belt 200 is adjustable in the width direction of the transmission belt 200. That is, the retaining ring 410 can be moved closer to or further away from the transmission belt 200, i.e., the distance between the retaining rings 410 on both sides of the transmission belt 200 in the width direction is adjustable. The retaining ring 410 can be moved directly, or its position can be adjusted through the overall moving anti-deviation mechanism 400.

[0050] On the one hand, by moving the retaining ring 410, the distance between the edge of the transmission belt 200 and the retaining ring 410 can be set as needed, so that the transmission belt 200 operates within the allowable deviation range, thereby improving the belt's service life. On the other hand, by adjusting the position of the retaining ring 410 in real time, it can also accommodate dimensional errors in the width direction of the transmission belt 200. This can prevent the anti-deviation function from failing when the width of the transmission belt 200 is too small, and can also prevent the transmission belt 200 from being squeezed by the retaining rings 410 on both sides when the width is too large, thus preventing issues such as curling and jamming, thereby improving the stability of the belt conveyor device 10.

[0051] Please refer to the following: Figure 6 and Figure 7In this embodiment, the anti-deviation mechanism 400 also includes a mounting base 420, an adjusting plate 430, and a rotary bearing 440. The mounting base 420 is mounted on the main support 100, the adjusting plate 430 is mounted on the mounting base 420, the inner ring of the rotary bearing 440 is fixed to the adjusting plate 430, and the retaining ring 410 is sleeved on the outer ring of the rotary bearing 440.

[0052] The retaining ring 410 rotates via the rotary bearing 440, with its rotation axis coinciding with the axis of the rotary bearing 440. The mounting base 420 is connected to the main support 100 via threaded fastening or other means. The inner ring of the rotary bearing 440 is fixed to the adjusting plate 430 via the second bolt 460, thereby restricting the axial freedom of the rotary bearing 440 and ensuring that the retaining ring 140 does not move axially during rotation with the rotary bearing 440.

[0053] Furthermore, in this embodiment, the adjusting plate 430 is provided with a strip-shaped hole 431 extending along the width direction of the transmission belt 200, and the adjusting plate 430 is installed on the mounting base 420 by a first bolt 450 passing through the strip-shaped hole 431 and threadedly connected to the mounting base 420.

[0054] After loosening the first bolt 450, the adjusting plate 430 can be moved along the slot 431, thereby adjusting the position of the retaining ring 410 along the width of the transmission belt 200. Once the retaining ring 410 is in place, the first bolt 450 can be tightened again. Therefore, by using the first bolt 450 in conjunction with the slot 431, the position of the retaining ring 410 along the width of the transmission belt 200 can be adjusted, and the operation is relatively convenient.

[0055] In addition, please refer to again Figure 1 See also Figure 8 In this embodiment, the belt conveyor 10 further includes detection components 600 disposed on both sides of the transmission belt 200 in the width direction. The detection components 600 include detection sensors 610, which can issue an alarm signal when the offset of the transmission belt 200 exceeds a preset value.

[0056] The detection sensor 610 can acquire the offset of the conveyor belt 200 in real time. When the detection sensor 610 issues an alarm signal, it indicates that the anti-deviation mechanism 400 has failed, resulting in the conveyor belt 200 failing to correct its deviation in time and causing the deviation to exceed the preset value. At this time, it is necessary to stop the belt conveyor device 10 for inspection and manual maintenance. It can be seen that by setting the detection component 600, the effectiveness of the anti-deviation mechanism 400 can be ensured.

[0057] Furthermore, in this embodiment, the detection component 600 also includes a mounting plate 620 and an adjustment platform 630. The mounting plate 620 is fixed to the main support 100, the adjustment platform 630 is mounted on the mounting plate 620, and the detection sensor 610 is mounted on the adjustment platform 630. The adjustment platform 630 can drive the detection sensor 610 to move along the width direction of the transmission belt 200.

[0058] The adjustment platform 630 can be a manual slide, allowing for manual adjustment of the position of the detection sensor 610. By moving the detection sensor 610 along the width direction of the conveyor belt 200, dimensional errors in the width direction of the conveyor belt 200 can be well accommodated, thereby ensuring that the detection sensor 610 can accurately obtain the offset of the conveyor belt.

[0059] In the aforementioned belt conveyor 10, the conveyor belt 200 rotates around the main support 100 under the drive of the belt drive mechanism 300, thereby conveying materials. When the conveyor belt 200 deviates to either side in the width direction during operation, the edge of the conveyor belt 200 extends into the annular groove 411 of the side retainer ring 410 and contacts the bottom of the annular groove 411, thus blocking the tendency of the conveyor belt 200 to deviate to that side. Moreover, the annular groove 411 can effectively limit the edge of the conveyor belt 200, effectively preventing the conveyor belt 200 from curling or derailing. As the conveyor belt 200 continues to rotate and the retainer ring 410 rotates, the deviated conveyor belt 200 will be gradually corrected under its own tensile force and the thrust of the retainer ring 410. Therefore, the aforementioned belt conveyor 10 can effectively prevent the conveyor belt 200 from deviating.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A belt conveyor device, characterized in that, It includes a main support frame, a transmission belt, a belt drive mechanism, and an anti-deviation mechanism; the transmission belt is wound around the main support frame and can operate under the drive of the belt drive mechanism; the anti-deviation mechanism is installed on the main support frame and distributed on both sides of the transmission belt in the width direction, each of the anti-deviation mechanisms includes a retaining ring, the retaining ring can rotate about the rotation axis, and the side of the retaining ring has an annular groove for the edge of the transmission belt to pass through.

2. The belt conveyor device according to claim 1, characterized in that, Multiple anti-deviation mechanisms are distributed on each side of the transmission belt in the width direction, and the multiple anti-deviation mechanisms are spaced apart along the extension direction of the transmission belt.

3. The belt conveyor device according to claim 1, characterized in that, The position of the retaining ring relative to the transmission belt is adjustable in the width direction of the transmission belt.

4. The belt conveyor device according to claim 1, characterized in that, The anti-deviation mechanism also includes a mounting base, an adjusting plate, and a rotary bearing. The mounting base is mounted on the main support, the adjusting plate is mounted on the mounting base, the inner ring of the rotary bearing is fixed to the adjusting plate, and the retaining ring is sleeved on the outer ring of the rotary bearing.

5. The belt conveyor device according to claim 4, characterized in that, The adjusting plate has a strip-shaped hole extending along the width direction of the transmission belt. The adjusting plate is installed on the mounting base by a first bolt that passes through the strip-shaped hole and is threadedly connected to the mounting base.

6. The belt conveyor device according to claim 1, characterized in that, The belt drive mechanism includes a drive connecting plate, a drive roller, and a power element. The drive connecting plate is fixed on both sides of the main support in the width direction. The drive roller is rotatably mounted on the drive connecting plate and is connected to the power element for transmission. The transmission belt is wound around the drive roller.

7. The belt conveyor device according to claim 6, characterized in that, The belt drive mechanism further includes a tension roller mounted on the drive connecting plate, the transmission belt passes around the tension roller, and the position of the tension roller relative to the drive connecting plate is adjustable to adjust the tension of the transmission belt.

8. The belt conveyor device according to claim 7, characterized in that, The drive connecting plate has a strip-shaped mounting hole with graduations on the edge. The tension roller is slidably mounted in the mounting hole. The belt drive mechanism also includes an adjusting screw, which is screwed into the drive connecting plate and connected at one end to the tension roller.

9. The belt conveyor device according to claim 1, characterized in that, It also includes detection components disposed on both sides of the width direction of the transmission belt. The detection components include detection sensors, which can issue an alarm signal when the offset of the transmission belt exceeds a preset value.

10. The belt conveyor device according to claim 9, characterized in that, The detection assembly also includes a mounting plate and an adjustment platform. The mounting plate is fixed to the main support, the adjustment platform is mounted on the mounting plate, and the detection sensor is mounted on the adjustment platform. The adjustment platform can drive the detection sensor to move along the width direction of the transmission belt.

11. The belt conveyor device according to claim 1, characterized in that, It also includes a negative pressure cavity installed on the main support, the negative pressure cavity extending along the conveying direction of the conveyor belt, the conveyor belt passing through the negative pressure cavity, the negative pressure cavity having a through hole on its top surface facing the conveyor belt, and the surface of the conveyor belt having a vent hole.

12. The belt conveyor device according to claim 11, characterized in that, The interior of the negative pressure cavity has multiple negative pressure chambers along its length, and each negative pressure chamber is connected to a corresponding through hole.

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