A device for automatically adjusting belt misalignment

Abstract

This invention discloses an automatic belt misalignment adjustment device, relating to the field of belt conveyor technology. It includes: a lower idler roller, two side idler rollers, a frame, two motors, a detection device, a battery, and a controller. The lower idler roller supports the belt; the side idler rollers support the belt, with the angle between the side idler rollers and the lower idler roller between 135 and 150 degrees to support the belt in a groove shape; the frame is connected to a lower support frame for mounting the lower idler rollers, and side support frames for mounting the side idler rollers are provided on both sides of the lower support frame; the two motors are respectively connected to the two side idler rollers, and the motors convert the mechanical energy of the rotating side idler rollers into electrical energy; the detection device detects the belt position; the battery is mounted on the frame and stores the electrical energy generated by the two motors; the controller adjusts the charging power of the two motors to the battery according to the belt position. This invention can automatically correct belt misalignment during belt operation.

Description

Technical Field

[0001] This invention relates to the field of belt conveyor technology, and in particular to a device for automatically adjusting belt misalignment. Background Technology

[0002] In existing technologies, bulk powders or lumpy materials such as mineral powder and ore are mainly transported via various transfer chutes of belt conveyors. During operation, bulk materials may accumulate in the chutes or become wet due to rain, causing blockages at the discharge port. This alters the original discharge point, preventing the material from accurately falling into the center of the conveyor belt, ultimately leading to belt misalignment and affecting continuous conveying operations. The consequences of belt misalignment range from material spillage to the belt winding up and detaching from the frame, potentially causing a major accident. Therefore, timely detection and adjustment of belt misalignment during material transport is crucial. However, current methods for adjusting belt misalignment typically involve stopping the equipment and manually adjusting the installation positions of the redirecting and driving rollers, as well as the idler roller brackets. This is time-consuming and labor-intensive, and manual monitoring is still required once the equipment is restarted. Given the often harsh working environment during material feeding, this poses significant health and safety risks to workers. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a device and method for automatically adjusting belt misalignment, which can automatically correct belt misalignment during belt operation.

[0004] According to a first aspect of the present invention, an apparatus and method for automatically adjusting belt misalignment are provided. The apparatus includes: a lower idler roller, two side idler rollers, a frame, two electric motors, a detection device, a battery, and a controller. The lower idler roller supports the belt; the side idler rollers support the belt, with the angle between the side idler rollers and the lower idler roller between 135 and 150 degrees to support the belt in a groove shape; the frame is connected to a lower support frame for mounting the lower idler rollers, and side support frames for mounting the side idler rollers are provided on the left and right sides of the lower support frame; the two electric motors are respectively drivenly connected to the two side idler rollers, and the electric motors convert the mechanical energy of the rotation of the side idler rollers into electrical energy; the detection device detects the belt position; the battery is mounted on the frame and stores the electrical energy generated by the two electric motors; the controller adjusts the charging power of the two electric motors to the battery according to the belt position.

[0005] According to a first embodiment of the present invention, two speed sensors are connected to the frame for detecting the speeds of the two motors respectively.

[0006] According to a first embodiment of the present invention, the detection device includes a sleeve, a slide rod, and a displacement sensor. The sleeve is connected to the frame. One end of the slide rod passes through the sleeve, and the other end is rotatably mounted with a side roller that abuts against the side of the belt. A return spring is installed inside the sleeve, and the return spring is used to drive the side roller to abut against the side of the belt. The displacement sensor is installed on the sleeve to detect the position of the slide rod in the sleeve.

[0007] According to a first embodiment of the present invention, a bracket is provided at the end of the slide rod away from the sleeve, the side guard roller is vertically mounted on the bracket, a protrusion is provided on the inner wall of the sleeve, and a groove extending along the length direction of the slide rod is formed on the side wall of the slide rod, the protrusion is embedded in the groove so that the side guard roller remains vertical.

[0008] According to a first embodiment of the present invention, a baffle is provided at the end of the sleeve away from the belt. The baffle abuts against the return spring to prevent the return spring from disengaging from the inside of the sleeve. A measuring hole is provided on the baffle. The displacement sensor is installed on the side of the baffle away from the belt. The displacement sensor passes through the measuring hole to measure the displacement of the slide rod to indirectly measure the position of the belt.

[0009] According to a first embodiment of the present invention, a dovetail groove is horizontally arranged on the frame, the dovetail groove extends perpendicular to the belt running direction, a dovetail plate is provided at the lower end of the sleeve that can be embedded in the dovetail groove, and a fixing bolt for fixing the dovetail plate passes through the side wall of the dovetail groove.

[0010] According to a first embodiment of the present invention, a buffer spring is fitted onto the portion of the slide rod extending out of the sleeve. The length of the buffer spring is no greater than 0.2 times the length of the slide rod, and the length of the slide rod is less than the sum of the lengths of the buffer spring and the sleeve, so that one end of the buffer spring can abut against the sleeve and the other end can abut against the bracket.

[0011] According to a first embodiment of the present invention, a first synchronous pulley is provided on the output shaft of the motor, and a second synchronous pulley is connected to the side roller. The first synchronous pulley and the second synchronous pulley are connected by a synchronous belt drive.

[0012] According to a first embodiment of the present invention, a storage box is bolted to the bracket. The storage box is used to store the battery and the controller. The upper end of the storage box is inclined to prevent the accumulation of materials scattered on the belt.

[0013] According to a second aspect of the present invention, a method for automatically adjusting belt misalignment, the method being implemented by applying the aforementioned device for automatically adjusting belt misalignment, includes the following steps:

[0014] Obtain the position of the belt and determine the direction of belt deviation;

[0015] Based on the direction of belt misalignment, gradually increase the power output of the motor on the side opposite to the direction of belt misalignment until the belt returns to the correct position. If the power output of the motor on the side opposite to the direction of belt misalignment reaches its maximum or the speed sensor detects an increase in the speed difference between the two motors, and the belt has not yet returned to the correct position, then stop increasing the power output of the motor on the side opposite to the direction of belt misalignment and gradually decrease the power output of the motor on the side with the same direction of belt misalignment until the belt returns to the correct position.

[0016] The power output of the electric motor can be reduced to a negative value, so that the electric motor converts electrical energy into mechanical energy for the belt to run.

[0017] An apparatus and method for automatically adjusting belt misalignment according to an embodiment of the present invention has at least the following beneficial effects:

[0018] (1) By using a motor and side rollers to make the resistance of the belt running on the left and right sides inconsistent, the belt deviation can be corrected.

[0019] (2) There is no sliding friction between the side roller and the belt, resulting in less wear on the belt;

[0020] (3) The motor can generate electricity using the kinetic energy of the side roller rotation to power the controller and detection device. No external power supply is required, and the installation is convenient.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the installation structure according to the first embodiment of the present invention;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the rack according to the first embodiment of the present invention;

[0026] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0027] Figure 5 This is a schematic diagram of the reset spring according to the first embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the sleeve according to the first embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the slide bar according to the first embodiment of the present invention.

[0030] Icon labels:

[0031] Belt 100;

[0032] Lower idler roller 200;

[0033] Side idler roller 300, second synchronous pulley 310, synchronous belt 320;

[0034] Frame 400, lower support frame 410, side support frame 420, speed sensor 430, dovetail groove 440, fixing bolt 441;

[0035] Electric motor 500, first synchronous pulley 510;

[0036] The device includes a detection device 600, a sleeve 610, a return spring 611, a protrusion 612, a baffle 613, a measuring hole 614, a dovetail plate 615, a slide bar 620, a side roller 621, a bracket 622, a groove 623, a displacement sensor 630, and a buffer spring 640.

[0037] Storage box 800, electric fan 810. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention 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 invention.

[0040] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0041] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0042] Reference Figures 1 to 7As shown, an embodiment of the present invention discloses an automatic belt misalignment adjustment device for adjusting belt 100 misalignment. The device includes: a lower idler roller 200, two side idler rollers 300, a frame 400, two motors 500, a detection device 600, a battery, and a controller. The lower idler roller 200 supports the belt 100. The belt 100 is used to move and transport materials. The belt is a part of the existing belt conveyor and will not be described in detail. The specific structure and installation method of the lower idler roller 200 are existing technologies and will not be described in detail. Both side idler rollers 300 support the belt 100. The angle between the side idler rollers 300 and the lower idler roller 200 is between 135 degrees and 150 degrees to support the belt 100 in a trough shape. The upward bending of the belt 100 to form a trough shape improves the conveying capacity of the belt 100. The frame 400 is connected to a lower support frame 410, which is used to mount the lower idler roller 200. Side support frames 420 are provided on both sides of the lower support frame 410, which are used to mount the side idler rollers 300. The two ends of the rotating shaft of the side idler roller 300 are rotatably mounted on the side support frame 420 via two thrust bearings. A motor 500 is bolted to the frame 400. The two motors 500 are respectively connected to the two side idler rollers 300 for transmission. The motors 500 are used to convert the mechanical energy of the rotation of the side idler rollers 300 into electrical energy. The motors 500 are permanent magnet brushless DC motors. When the electric motor 500 converts the mechanical energy of the rotating side roller 300 into electrical energy, the electric motor 500 effectively functions as a generator. The detection device 600 detects the position of the belt 100, specifically whether it is veering to the left or right. It is anticipated that the detection device 600 will be positioned 3-5 meters away from the side roller 300, and the belt 100 will first pass the side roller 300 before passing the detection device 600. A battery is mounted on the frame 400 and stores the electrical energy generated by the two electric motors 500. The battery also powers the controller, detection device 600, and electric motors 500. The controller is a PLC industrial control board. The controller adjusts the charging power of the two electric motors 500 to the battery based on the results detected by the detection device 600. When the detection device 600 detects that the belt 100 is misaligned to the left, it increases the power output of the motor 500 connected to the right-side idler roller 300, and decreases the power output of the motor 500 connected to the left-side idler roller 300 if the battery has sufficient power, thereby causing the belt 100 to move to the right and eliminate the misalignment. Conversely, when the detection device 600 detects that the belt 100 is misaligned to the right, it increases the power output of the motor 500 connected to the left-side idler roller 300, and decreases the power output of the motor 500 connected to the right-side idler roller 300 if the battery has sufficient power, thereby causing the belt 100 to move to the left and eliminate the misalignment. This achieves the function of automatically adjusting belt misalignment.Since the device has its own battery and can continuously generate its own power, it can operate without an external power source. It is easy to set up, and no wiring is required in the middle of the belt 100. It is convenient to add it to the existing equipment. The addition only requires removing one of the original idler roller groups and then replacing it with the automatic belt deviation adjustment device in this embodiment of the invention.

[0043] Reference Figures 1 to 7 As shown, it can be understood that two speed sensors 430 are connected to the frame 400 to detect the speeds of the two motors 500. The speed of the motor 500 is proportional to the speed of the side roller 300. When the power output of the motor 500 is too high, slippage may occur between the side roller 300 and the belt 100. Since sliding friction is less than static friction, the actual power output will decrease significantly, and the effect of adjusting the belt misalignment will also be reduced. Therefore, when the speed sensor 430 detects a change in the speed difference between the two motors 500, it indicates that one of the side rollers 300 is slipping. The controller gradually reduces the power output of the two motors 500 until the speed difference between the two motors 500 returns to the value before slippage. This effectively prevents sliding friction between the side roller 300 and the belt 100, reduces the wear of the belt 100, and helps to extend the service life of the belt 100. It also prevents the force for correcting belt misalignment during operation from decreasing, thus improving the adjustment effect.

[0044] Reference Figures 1 to 7As shown, the detection device 600 includes a sleeve 610, a slide rod 620, and a displacement sensor 630. The sleeve 610 is connected to the frame 400 and is hollow inside. One end of the slide rod 620 passes through the sleeve 610, and the other end is rotatably mounted with a side rail roller 621. The slide rod 620 can move along the inner wall of the sleeve 610. It is foreseeable that grease is applied to the slide rod 620 to ensure smooth movement. The side rail roller 621 abuts against the side of the belt 100, and the belt 100 moves left and right, causing the side rail roller 621 to move. A return spring 611 is installed inside the sleeve 610. The return spring 611 drives the side rail roller 621 to abut against the side of the belt 100, ensuring that the side rail roller 621 remains in contact with the side of the belt 100, thus ensuring that the position of the slide rod 620 accurately corresponds to the left and right position of the belt 100. A displacement sensor 630 is mounted on the sleeve 610 and is used to detect the position of the slide bar 620 within the sleeve 610. The displacement sensor 630 can be a contact type or a photoelectric type; its specific structure and installation method are existing technologies and will not be detailed further. It is foreseeable that two detection devices 600 are symmetrically arranged around the belt 100 to improve detection accuracy and reduce errors. It is also foreseeable that the rotation axis of the side roller 300 is preferably perpendicular to the rotation axis of the side guard roller 621. However, when installation space is limited, the rotation axis of the side roller 300 and the rotation axis of the side guard roller 621 may not be perpendicular.

[0045] Reference Figures 1 to 7 As shown, it can be understood that a bracket 622 is provided at the end of the slide rod 620 away from the sleeve 610, the side guard roller 621 is vertically mounted on the bracket 622, a protrusion 612 is provided on the inner wall of the sleeve 610, and a groove 623 extending along the length of the slide rod 620 is opened on the side wall of the slide rod 620, and the protrusion 612 is embedded in the groove 623 to keep the side guard roller 621 vertical.

[0046] Reference Figures 1 to 7As shown, it can be understood that a baffle 613 is bolted to the end of the sleeve 610 away from the belt 100. The baffle 613 is used to close the opening at one end of the sleeve 610. One end of the return spring 611 abuts against the baffle 613, and the other end abuts against the slide rod 620. The baffle 613 abuts against the return spring 611 to prevent the return spring 611 and the slide rod 620 from disengaging from the inside of the sleeve 610. A measuring hole 614 is provided on the baffle 613. The displacement sensor 630 is installed on the side of the baffle 613 away from the belt 100. The displacement sensor 630 passes through the measuring hole 614 to measure the displacement of the slide rod 620, thereby indirectly measuring the position of the belt 100. For the contact type displacement sensor 630, the size of the return spring 611 is larger than the size of the contact type displacement sensor 630, so that the measuring part of the displacement sensor 630 can pass through the measuring hole 614 and the return spring 611 to measure the displacement of the slide rod 620.

[0047] Reference Figures 1 to 7 As shown, it can be understood that a dovetail groove 440 is horizontally arranged on the frame 400, and the extension direction of the dovetail groove 440 is perpendicular to the running direction of the belt 100. A dovetail plate 615 that can be embedded in the dovetail groove 440 is provided at the lower end of the sleeve 610. A fixing bolt 441 for fixing the dovetail plate 615 is provided through the side wall of the dovetail groove 440. The fixing bolt 441 is threaded to the side wall of the dovetail groove 440. When the tail end of the fixing bolt 441 abuts against the dovetail plate 615, it can fix the dovetail plate 615 in the dovetail groove 440, which can adapt to belts 100 with different widths.

[0048] Reference Figures 1 to 7 As shown, it can be understood that a buffer spring 640 is fitted onto the portion of the slide rod 620 extending out of the sleeve 610. When the belt 100 deviates too much, the length of the portion of the slide rod 620 extending out of the sleeve 610 is shortened until one end of the buffer spring 640 abuts against the sleeve 610 and the other end abuts against the bracket 622. The length of the buffer spring 640 is no more than 0.2 times the length of the slide rod 620, and the length of the slide rod 620 is less than the sum of the lengths of the buffer spring 640 and the sleeve 610, so that one end of the buffer spring 640 abuts against the sleeve 610 and the other end abuts against the bracket 622. The elastic modulus of the buffer spring 640 is at least 100 N / mm, increasing the resistance of the belt 100 moving towards the sleeve 610, and the side roller 621 prevents the belt 100 from deviating further. The buffer spring 640 absorbs the vibration caused by the impact of the belt 100, preventing the displacement sensor 630 from being damaged by vibration.

[0049] Reference Figures 1 to 7As shown, the output shaft of the motor 500 is equipped with a first synchronous pulley 510, and the shaft of the side roller 300 is connected to a second synchronous pulley 310. The first synchronous pulley 510 and the second synchronous pulley 310 are connected by a synchronous belt 320. When the side roller 300 is driven to rotate by the friction of the belt 100, the shaft of the side roller 300 is also driven to rotate. The synchronous belt 320 connection is used to prevent the vibration of the side roller 300 from affecting the normal operation of the motor 500.

[0050] Reference Figures 1 to 7 As shown, it can be understood that a storage box 800 is bolted to the bracket 622. The storage box 800 is made of stainless steel and serves a protective function. The storage box 800 is used to store the battery and controller, preventing external dust and moisture from affecting the operation of the battery and controller. The upper end of the storage box 800 is inclined and designed in a ridge shape to prevent the accumulation of materials scattered on the belt 100.

[0051] Reference Figures 1 to 7 As shown, it is understandable that an electric fan 810 is installed on the frame 400, and the airflow direction of the electric fan 810 is towards the synchronous belt 320. Since there is a lot of dust in the belt's operating environment, the electric fan 810 can blow away the dust on the synchronous belt 320 when it starts, thus improving the service life of the synchronous belt 320. In addition, when the battery charge reaches 95%, the charging speed slows down, limiting the power generation of the motor 500. Therefore, the electric fan 810 is set to automatically turn on when the battery charge reaches 95% and automatically turn off when the battery charge reaches 50%. The turning on and off of the electric fan 810 is also controlled by the controller.

[0052] The present invention also provides a method for automatically adjusting belt misalignment, adapted to the above-mentioned device for automatically adjusting belt misalignment, comprising the following steps:

[0053] The position of belt 100 is obtained by displacement sensor 630 to determine the direction of belt 100 deviation;

[0054] According to the direction of belt 100 deviation, gradually increase the power generation of motor 500 on the side opposite to the direction of belt 100 deviation until belt 100 returns to the correct direction. If the power generation of motor 500 on the side opposite to the direction of belt 100 deviation reaches the maximum or the speed sensor 430 detects an increase in the speed difference between the two motors 500, and belt 100 has not yet returned to the correct direction, then stop increasing the power generation of motor 500 on the side opposite to the direction of belt 100 deviation and gradually decrease the power generation of motor 500 on the side with the same direction of belt 100 deviation until belt 100 returns to the correct direction.

[0055] Among them, the power generation of the electric motor 500 can be reduced to a negative value, so that the electric motor 500 converts electrical energy into mechanical energy for the belt 100 to run.

[0056] When belt 100 is detected to be veering to the right, the power output of the left motor 500 is gradually increased. When the power output of the left motor 500 increases to the point where belt 100 is detected to be returning to the correct position, the increase is stopped and the power output of the left motor 500 is maintained. If, during the increase of the power output of the left motor 500, an increase in the speed difference between the two motors 500 is detected, the power output of the left motor 500 is decreased until the speed difference returns to its previous value. If the power output of the left motor 500 increases to its maximum power while belt 100 is still veering to the right, the increase is stopped and the power output of the left motor 500 is maintained. Then, the power output of the right motor 500 is decreased. After the power output of the right motor 500 drops to zero, the power output continues to decrease, allowing the battery to input electrical energy into the right motor 500, converting the electrical energy into the kinetic energy of the rotating side roller 300. If, during the decrease of the power output of the right motor 500, belt 100 is detected to be returning to the correct position, the decrease is stopped and the power output of the right motor 500 is maintained.

[0057] 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 device for automatically adjusting belt misalignment, used to adjust belt (100) misalignment, characterized in that, include: Lower roller (200) is used to support the belt (100). Two side rollers (300) are used to support the belt (100), and the angle between the side rollers (300) and the lower roller (200) is between 135 degrees and 150 degrees to support the belt (100) in a groove shape; The frame (400) is connected to a lower support frame (410) for mounting the lower idler roller (200), and side support frames (420) for mounting the side idler roller (300) are provided on the left and right sides of the lower support frame (410). Two electric motors (500) are connected to two side rollers (300) respectively. The electric motors (500) are used to convert the mechanical energy of the rotation of the side rollers (300) into electrical energy. Two speed sensors (430) are connected on the frame (400) respectively for detecting the speed of the two electric motors (500). A detection device (600) is used to detect the position of the belt (100). The detection device (600) includes a sleeve (610), a slide rod (620), and a displacement sensor (630). The sleeve (610) is connected to the frame (400). One end of the slide rod (620) is inserted into the sleeve (610), and the other end is rotatably mounted with a side roller (621) that abuts against the side of the belt (100). A return spring (611) is installed inside the sleeve (610). The return spring (611) is used to drive the side roller (621) to abut against the side of the belt (100). The displacement sensor (630) is installed on the sleeve (610) to detect the position of the slide rod (620) in the sleeve (610). A battery, mounted on the frame (400), is used to store electrical energy generated by the two motors (500); The controller is used to adjust the charging power of the two motors (500) to the battery according to the position of the belt (100). The controller obtains the position of the belt (100) through the detection device (600) and determines the direction of belt (100) deviation. Based on the direction of belt (100) deviation, the controller gradually increases the power generation of the motor (500) on the opposite side of the belt (100) deviation until the belt (100) returns to the correct position. If the power generation of the motor (500) on the opposite side of the belt (100) deviation reaches... When the maximum speed sensor (430) detects an increase in the speed difference between the two motors (500), and the belt (100) has not yet returned to the correct position, the power generation of the motor (500) on the side opposite to the direction of belt (100) deviation is stopped, and the power generation of the motor (500) on the side with the same direction of belt (100) deviation is gradually reduced until the belt (100) returns to the correct position; wherein, the power generation of the motor (500) can be reduced to a negative value, so that the motor (500) converts electrical energy into mechanical energy for the belt (100) to run.

2. The device for automatically adjusting belt misalignment according to claim 1, characterized in that: A bracket (622) is provided at the end of the slide rod (620) away from the sleeve (610). The side guard roller (621) is vertically mounted on the bracket (622). A protrusion (612) is provided on the inner wall of the sleeve (610). A groove (623) extending along the length direction of the slide rod (620) is opened on the side wall of the slide rod (620). The protrusion (612) is embedded in the groove (623) to keep the side guard roller (621) vertical.

3. The device for automatically adjusting belt misalignment according to claim 2, characterized in that: A baffle (613) is provided at one end of the sleeve (610) away from the belt (100). The baffle (613) abuts against the return spring (611) to prevent the return spring (611) from disengaging from the sleeve (610). A measuring hole (614) is provided on the baffle (613). The displacement sensor (630) is installed on the side of the baffle (613) away from the belt (100). The displacement sensor (630) passes through the measuring hole (614) to measure the displacement of the slide bar (620) to indirectly measure the position of the belt (100).

4. The device for automatically adjusting belt misalignment according to claim 3, characterized in that: The frame (400) is horizontally provided with a dovetail groove (440), the extension direction of the dovetail groove (440) is perpendicular to the running direction of the belt (100), the lower end of the sleeve (610) is provided with a dovetail plate (615) that can be embedded in the dovetail groove (440), and the side wall of the dovetail groove (440) is provided with fixing bolts (441) for fixing the dovetail plate (615).

5. The device for automatically adjusting belt misalignment according to claim 4, characterized in that: A buffer spring (640) is fitted onto the portion of the slide rod (620) that extends out of the sleeve (610). The length of the buffer spring (640) is no more than 0.2 times the length of the slide rod (620), and the length of the slide rod (620) is less than the sum of the lengths of the buffer spring (640) and the sleeve (610), so that one end of the buffer spring (640) can abut against the sleeve (610), and the other end can abut against the bracket (622).

6. The device for automatically adjusting belt misalignment according to claim 5, characterized in that: The output shaft of the motor (500) is provided with a first synchronous pulley (510), and the side roller (300) is connected to a second synchronous pulley (310). The first synchronous pulley (510) and the second synchronous pulley (310) are connected by a synchronous belt (320).

7. The device for automatically adjusting belt misalignment according to claim 6, characterized in that: A storage box (800) is bolted to the bracket (622). The storage box (800) is used to store the battery and the controller. The upper end of the storage box (800) is inclined to prevent the accumulation of materials scattered on the belt (100).

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