A belt conveyor storage bin capable of automatically correcting deviation

Abstract

The present invention relates to the technical field of belt conveyors, and specifically to a belt conveyor storage bin capable of automatically correcting deviation, comprising a frame, a belt, a fixed roller group and a traveling trolley, the traveling trolley comprising a frame and a movable roller group, the movable roller group comprising a first redirecting roller, a first correcting assembly and a second correcting assembly, the first correcting assembly comprising a bogie, a belt sensing device and a driving device, the first redirecting roller being rotatably mounted on the bogie, the bogie being rotatably mounted on the frame, the belt sensing device being used to identify the biased state of the belt, and the driving device being used to control the up and down deflection of the bogie; the second correcting assembly comprising a supporting frame, a correcting roller and an elastic member, the correcting roller being a tapered roller, both of the two correcting rollers having a spiral flange on their conical surfaces, the lower surface of the correcting roller being in rotational contact with the belt to drive the belt to be centered through the spiral flange; the elastic member being used to drive the correcting roller to push the belt; the belt storage bin can achieve stable deviation correction of the belt under different load conditions.

Description

Technical Field

[0001] The invention relates to the technical field of belt conveyors, and in particular to a belt conveyor storage bin capable of automatically correcting deviation. Background Art

[0002] A retractable belt conveyor is a conveying device that incorporates a belt storage bin and retractable mechanism on a conventional belt conveyor. This allows for flexible length expansion and contraction, allowing users to adjust the conveying length at any time based on their needs. As core equipment for coal transportation, any problems with these equipment can halt production within their transport area, significantly impacting mine production. Therefore, ensuring the proper operation of these belt conveyors is crucial for safe production management in mines.

[0003] The belt storage bin is a core component of a retractable belt conveyor, primarily used to store the tape. Typically, a retractable belt conveyor's belt storage bin is equipped with four or six layers of tape. These layers are wrapped around multiple rollers at a predetermined distance, forming a pattern of multiple layers of tape moving in opposite directions within a certain vertical distance. However, during installation, commissioning, and operation, if the rollers are not level, the belt tension is insufficient, or other force majeure occurs, the tape may deviate within the storage bin, colliding with the side frames and causing tearing. It can even cause tape congestion, leading to production accidents such as tape tearing.

[0004] Common correction devices mostly use a rotating roller in combination with correction rollers on both sides. For example, the Chinese patent document with authorization announcement number CN219990236U discloses a belt conveyor storage bin traveling trolley with anti-skew rollers. The traveling trolley includes a car body, several steering rollers and an anti-skew roller assembly. The anti-skew roller assembly includes a first anti-skew roller and a second anti-skew roller. The first anti-skew roller and the second anti-skew roller are spaced apart in the first direction and are respectively located on both sides of the belt.

[0005] In addition, the Chinese patent document with authorization announcement number CN106829331B also discloses a belt storage bin for a belt conveyor that can automatically correct deviation. The belt storage bin includes a belt storage bin frame, a fixed steering roller and a traveling trolley, and is equipped with a tensioning drive device. The traveling trolley is provided with N cross beams, each cross beam is provided with a pair of triangular convex plates, and each mobile steering roller is hinged in a three-frame frame through horizontal axes at both ends. The above three frames are hinged to the triangular convex plates one by one. A horizontal roller is also provided between two adjacent mobile steering rollers, and the horizontal roller is close to one of the mobile steering rollers. The axial spacing between the horizontal roller and the adjacent mobile steering roller is equal to the sum of their diameters, where N is a positive integer and 2≤N≤6.

[0006] The patent document with authorization announcement number CN219990236U achieves belt stopping by rotating contact between two anti-deviation rollers and the belt edge. However, this method will cause greater wear on the belt edge during operation, which will reduce the service life and stability of the belt. In addition, the method of setting correction rollers on both sides also takes up a large space, which is not conducive to the compact design of the belt storage bin.

[0007] Patent document CN106829331B uses the asymmetric friction between the tape and the moving steering roller to induce the tape to return to its original position when it deviates, thus achieving automatic tape correction while avoiding tape wear. However, the correction effect of the above device is completely dependent on the tension of the tape. When the tape is lightly loaded or unloaded, the device's correction ability is significantly reduced, making it prone to snaking. Therefore, there is a need for a tape storage bin that can automatically correct the tape's deviation and achieve stable tape correction under different load conditions. Summary of the Invention

[0008] The invention provides a belt storage bin for a belt conveyor capable of automatically correcting deviation, which can realize stable deviation correction of a belt under different load conditions.

[0009] In order to solve the above problems, the belt conveyor storage bin capable of automatically correcting deviation provided by the present invention adopts the following technical solutions:

[0010] A belt conveyor storage bin capable of automatically correcting deviation comprises a frame, a belt, a fixed roller group located at the left end of the frame, and a traveling trolley slidably mounted on the frame. The traveling trolley comprises a frame and a movable roller group. The belt is input from the right end of the frame and alternately passes between the fixed roller group and the movable roller group before being output from the left end of the frame. The movable roller group comprises a first redirecting roller, a first correcting assembly, and a second correcting assembly. The first redirecting roller is a drum roller. The first correcting assembly comprises a bogie, a belt sensing device, and a driving device. The first redirecting roller is rotatably mounted on the bogie. The bogie is rotatably mounted on the frame about a left-right axis. The belt sensing device is used to identify the offset state of the belt. The driving device is used to control the up and down deflection of the bogie based on feedback from the belt sensing device.

[0011] The second correcting assembly is located on the left side of the first redirecting roller, which includes a support frame installed on the frame for sliding up and down, two correcting rollers and an elastic member. The correcting roller is a conical roller, which is installed on the support frame for rotation around an axis. The conical surfaces of the two correcting rollers are provided with circumferentially extending spiral flanges, and the rotation directions of the two spiral flanges are opposite. The two correcting rollers are symmetrical front to back and the conical surfaces are arranged in opposite directions. The lower surface of the correcting roller is in rotational contact with the belt to drive the belt to be centered through the spiral flanges; the elastic member is located between the support frame and the frame, and is used to drive the correcting roller to push the belt downward.

[0012] The belt storage bin of the belt conveyor capable of automatically correcting deviation of the present invention is configured such that the first redirecting roller is a drum-shaped roller. When the adhesive tape deviates from the center line, the contact area between the middle portion of the first redirecting roller and the adhesive tape increases, thereby generating a lateral friction force, which can push the adhesive tape back to the center. In addition, by providing a bogie, an adhesive tape sensor, and a driving device, the first redirecting roller can be deflected up and down according to the deviation of the adhesive tape, thereby enabling the adhesive tape to be pushed back to the center by the lateral friction force generated by the first redirecting roller on the adhesive tape.

[0013] In addition, during the process of the tape on the lower side of the correcting roller being transported to the right, the tape can drive the correcting roller to rotate counterclockwise. By setting the correcting roller as a tapered roller, the linear velocity of the surface of the thicker end of the correcting roller is greater than the linear velocity of the surface of the thinner end of the correcting roller. As a result, the thinner end of the correcting roller has a friction force on the tape in the opposite direction of movement of the tape while in contact with the rotating tape. By arranging spiral flanges with opposite rotation directions on the two correcting rollers, the friction force has a component force that drives the tape back to the straight position, thereby improving the correction ability of the tape storage bin.

[0014] The setting of the elastic part enables the correcting roller to automatically adjust according to the tension of the tape. When the tape tension is small, the elastic part can push the support frame downward and move it downward. When the tape tension is large, the mounting frame can be moved upward by pushing the correcting roller, ensuring stable contact between the correcting roller and the tape, which is conducive to achieving stable deviation correction of the tape.

[0015] Furthermore, the lowermost generatrixes of the two deviation-correcting rollers are located on the same horizontal plane to increase the contact area between the spiral flange and the lower adhesive tape.

[0016] Its beneficial effect is that by setting the busbars at the lowermost sides of the two correcting rollers on the same horizontal plane, the lower sides of the two correcting rollers can always maintain contact with the tape, thereby increasing the contact area between the spiral flange on the correcting roller and the tape, thereby increasing the magnitude of the component force that drives the tape back to the center, and improving the correcting effect of the correcting roller.

[0017] Furthermore, the first correction assembly also includes a fixed plate, a steering shaft and a steering arm. The fixed plate is a rectangular plate extending forward and backward and fixed on the vehicle frame. The steering shaft extends in the left and right directions and passes through the middle of the fixed plate. The left end of the steering shaft is fixedly connected to the bogie, and the right end of the steering shaft is fixedly connected to the steering arm. The driving device is a steering cylinder, which is hinged on the fixed plate, and its output end is fixedly connected to the steering arm to drive the bogie to deflect up and down through the steering cylinder.

[0018] Furthermore, the traveling trolley also includes an offset detection device, which is located at the right end of the frame and includes an offset sensing plate, a sensing member and a traction wheel. The offset sensing plate extends in the front-to-rear direction, and its middle part is hinged to the frame; the traction wheel is rotatably installed on the right side of the sensing plate for connecting to an external traction device, and the sensing member is located between the sensing plate and the frame for detecting the offset state between the traveling trolley and the sensing plate.

[0019] Furthermore, the movable roller group also includes a second redirecting roller and a lifting device. The second redirecting roller is located on the right side of the first redirecting roller. The tape passes over the right roller surface of the second redirecting roller and extends to the left on the upper side of the correcting roller. The lifting device is installed on the frame. The roller shaft of the second redirecting roller is rotatably installed on the lifting device. The lifting device is used to drive the second redirecting roller up and down under the feedback of the offset detection device, so that the tape and the spiral flange on the upper side of the correcting roller are in friction contact / move away from each other.

[0020] Its beneficial effect is that: by arranging the second redirecting roller, the lifting device and the deviation detection device, when the traveling trolley deviates, the lifting device can control the second redirecting roller to move downward according to the feedback of the deviation detection device, so that the tape on the second redirecting roller contacts the upper side surfaces of the two correcting rollers, further increasing the contact area between the spiral flange on the correcting roller and the tape, thereby enhancing the correction effect of the tape storage bin, which is beneficial to the stable operation of the tape storage bin.

[0021] Furthermore, a first auxiliary roller and a second auxiliary roller are respectively provided on the left and right sides of the correcting roller. The first auxiliary roller and the second auxiliary roller are used to support the tape to cooperate with the correcting roller to reduce the tension fluctuation of the tape under the action of the elastic member.

[0022] Its beneficial effect is that by arranging the first auxiliary roller and the second auxiliary roller on both sides of the correcting roller, it can play a supporting role in the vertical direction, maintain the tension of the tape on the lower side of the correcting roller, and prevent the tape from losing contact with the correcting roller due to excessive sagging due to gravity, which is conducive to achieving stable contact between the tape and the correcting roller.

[0023] Furthermore, the elastic member is a spring.

[0024] Furthermore, the tape sensing device is a pressure sensor, and there are two pressure sensors, which are respectively installed at the front and rear ends of the left auxiliary roller to identify the bias state of the tape through the pressure difference between the front and rear ends of the auxiliary roller.

[0025] The beneficial effect is that the pressure sensor has high sensitivity and good stability. Using the pressure sensor as a tape sensing device is conducive to maintaining stable operation of the tape storage bin in harsh environments.

[0026] Furthermore, the lifting device is two lifting cylinders installed on the frame, and the two lifting cylinders are respectively installed on the front and rear sides of the frame, and the output ends of the two lifting cylinders are fixedly connected to the front and rear ends of the roller shaft of the second redirecting roller.

[0027] Furthermore, the spiral flange is made of rubber.

[0028] The beneficial effects of the belt conveyor storage bin capable of automatically correcting deviation provided by the present invention are:

[0029] 1. The belt storage bin of the belt conveyor capable of automatically correcting deviation of the present invention is configured such that the first redirecting roller is configured as a drum roller. When the belt deviates from the center line, the contact area between the middle portion of the first redirecting roller and the belt increases, thereby forming a lateral friction force, which can push the belt back to the center. In addition, by providing a bogie, a belt sensor and a driving device, the first redirecting roller can be deflected up and down according to the deviation of the belt, and the lateral friction force formed by the first redirecting roller on the belt can be used to push the belt back to the center.

[0030] In addition, during the process of the tape on the lower side of the correcting roller being transported to the right, the tape can drive the correcting roller to rotate counterclockwise. By setting the correcting roller as a tapered roller, the linear velocity of the surface of the thicker end of the correcting roller is greater than the linear velocity of the surface of the thinner end of the correcting roller. As a result, the thinner end of the correcting roller has a friction force on the tape in the opposite direction of movement of the tape while in contact with the rotating tape. By arranging spiral flanges with opposite rotation directions on the two correcting rollers, the friction force has a component force that drives the tape back to the straight position, thereby improving the correction ability of the tape storage bin.

[0031] The setting of the elastic part enables the correcting roller to automatically adjust according to the tension of the tape. When the tape tension is small, the elastic part can push the support frame downward and move it downward. When the tape tension is large, the mounting frame can be moved upward by pushing the correcting roller, ensuring stable contact between the correcting roller and the tape, which is conducive to achieving stable deviation correction of the tape.

[0032] 2. By setting the busbars at the lowermost sides of the two correcting rollers on the same horizontal plane, the lower sides of the two correcting rollers can always keep in contact with the tape, increasing the contact area between the spiral flange on the correcting roller and the tape, thereby increasing the force component that drives the tape back to the center position and improving the correcting effect of the correcting roller.

[0033] 3. By setting up a second redirecting roller, a lifting device and an offset detection device, when the traveling trolley deviates, the lifting device can control the second redirecting roller to move downward according to the feedback of the offset detection device, so that the tape on the second redirecting roller contacts the upper side surfaces of the two correcting rollers, further increasing the contact area between the spiral flange on the correcting roller and the tape, thereby enhancing the correcting effect of the tape storage bin and facilitating the stable operation of the tape storage bin.

[0034] 4. By arranging the first auxiliary roller and the second auxiliary roller on both sides of the correcting roller, it can play a supporting role in the vertical direction, maintain the tension of the belt on the lower side of the correcting roller, and prevent the belt from sagging due to excessive gravity and losing contact with the correcting roller, which is conducive to achieving stable contact between the belt and the correcting roller.

[0035] 5. The pressure sensor has high sensitivity and good stability. Using the pressure sensor as a tape sensing device is conducive to maintaining the stable operation of the tape storage bin in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic structural diagram of a belt storage bin for a belt conveyor capable of automatically correcting deviation provided by the present invention;

[0037] Figure 2 A schematic diagram of the use status of a belt storage bin of a belt conveyor capable of automatically correcting deviation provided by the present invention;

[0038] Figure 3 for Figure 1 Schematic diagram of the structure of the mid-stream trolley;

[0039] Figure 4 for Figure 1 Partial cross-sectional view of the mid-swimming trolley;

[0040] Figure 5 for Figure 1 Front view of the mid-swimming trolley;

[0041] Figure 6 for Figure 5 A partial enlarged schematic diagram of point A in the middle;

[0042] Figure 7 for Figure 1 Top view of the mid-swimming trolley;

[0043] Figure 8 for Figure 3 A schematic structural diagram of the second web-correcting component;

[0044] Figure 9 is a side view of the second correcting component;

[0045] Figure 10 for Figure 3 Schematic diagram of the structure of the first correction component.

[0046] Description of reference numerals:

[0047] 1. Frame; 11. Track;

[0048] 2. Traveling trolley; 3. Frame; 31. Front side panel; 32. Rear side panel; 33. Horizontal panel; 34. Rotating groove; 35. Slideway; 36. Fixed plate; 4. Wheel;

[0049] 5. Moving roller group; 51. First redirecting roller; 52. First deflection correction assembly; 521. Bogie; 522. Steering shaft; 523. Steering arm; 524. Steering cylinder; 525. Pressure sensor; 53. Second deflection correction assembly; 531. Support frame; 532. Deflection correction roller; 533. Spring; 534. Guide rod; 535. Spiral flange; 54. Second redirecting roller; 55. Lifting cylinder; 56. Auxiliary roller assembly; 561. First auxiliary roller; 562. Second auxiliary roller; 563. Third auxiliary roller; 564. Fourth auxiliary roller;

[0050] 6. Offset detection device; 61. Offset sensing plate; 62. Sensing cylinder; 63. Traction wheel; 7. Adhesive belt; 8. Fixed roller group; 81. Guide roller. DETAILED DESCRIPTION

[0051] Embodiment 1 of a belt conveyor storage bin capable of automatically correcting deviation provided by the present invention:

[0052] like Figures 1 to 10 As shown, the belt conveyor storage bin with automatic deviation correction includes a frame 1, a traveling trolley 2, a fixed roller set 8, and a tape 7. The frame 1 is a rectangular frame with a track 11 extending left and right at the lower end. The traveling trolley 2 is located within the frame 1 and is slidably mounted on the track 11, defining the traveling trolley 2 as sliding in the left and right directions. The fixed roller set 8 is fixedly mounted on the left end of the frame 1. The tape 7 is input from the right end of the frame 1 and alternately passes between the traveling trolley 2 and the fixed roller set 8 before being output from the left end of the frame 1. The traveling trolley 2 is used to adjust the storage length of the tape 7 in the storage bin and adjust the tension of the tape 7.

[0053] The following first introduces the fixed roller group 8. Figure 1 and Figure 2 As shown, the fixed roller group 8 includes a plurality of guide rollers 81 extending forward and backward. The guide rollers 81 are used to adjust the conveying direction of the tape 7 so that the tape 7 is conveyed along a determined track, and cooperate with the traveling trolley 2 to distribute the tension of the tape 7 through the friction between the rollers, thereby maintaining a constant tension of the tape 7 in the tape storage bin.

[0054] The following introduces the traveling car 2. Figures 1 to 7As shown, the traveling trolley 2 includes a frame 3, wheels 4, a movable roller assembly 5, and a deviation detection device 6. The frame 3 is a rectangular frame. The wheels 4 are four, all mounted on the underside of the frame 3 and configured to rotate with the track 11. The front and rear sides of the frame 3 respectively have a front side plate 31 and a rear side plate 32 fixed thereto. The movable roller assembly 5 is mounted between the front and rear side plates 31, 32. The right end of the frame 3 has a rectangular cross plate 33 extending forward and backward. The deviation detection device 6 is mounted to the right of the cross plate 33 and is configured to detect the deviation of the traveling trolley 2 on the track 11.

[0055] The following describes the moving roller group 5. Figure 3 、 Figure 4 and Figure 10 As shown, the movable roller assembly 5 includes a first redirecting roller 51, a first deflection correction assembly 52, a second redirecting roller 54, a second deflection correction assembly 53, a lifting device, and an auxiliary roller assembly 56. The first deflection correction assembly 52 includes a fixed plate 36, a steering frame 521, a steering shaft 522, a steering arm 523, a drive device, and a tape sensing device. The fixed plate 36 is a rectangular plate extending forward and backward, and the front and rear ends of the fixed plate 36 are respectively fixedly connected to the front side plate 31 and the rear side plate 32.

[0056] like Figure 3 、 Figure 4 and Figure 7 As shown, the bogie 521 is a C-shaped frame with an opening facing left and arranged horizontally. The first bend roller 51 is a drum-shaped roller with a convex center. It extends in the front-to-back direction and is rotatably mounted on the bogie 521. The steering shaft 522 extends in the left-to-right direction and passes through the center of the fixed plate 36. The left end of the steering shaft 522 is fixedly connected to the center of the bogie 521, allowing the bogie 521 to be rotatably mounted on the fixed plate 36 about the steering shaft 522. The driving device is a steering cylinder 524, which is hinged to the right side of the fixed plate 36. One end of the steering arm 523 is fixedly connected to the right end of the steering shaft 522, and the other end of the steering arm 523 is fixedly connected to the output end of the steering cylinder 524, thereby controlling the rotation of the bogie 521 through the steering cylinder 524. The front and rear side plates 31 and 32 each have a vertically extending rotation slot 34 for the roller shaft of the first bend roller 51 to pass through, which is used to limit the rotation angle of the first bend roller 51.

[0057] The auxiliary roller assembly 56 is described below. Figure 2 、 Figure 3 and Figure 4As shown, the auxiliary roller assembly 56 includes a second auxiliary roller 562 and a third auxiliary roller 563 located on the left side of the first redirecting roller 51. The third auxiliary roller 563 is located below the second auxiliary roller 562. The tape 7 is wound from the upper roller surface of the second auxiliary roller 562 to the right roller surface of the first redirecting roller 51, and then wound to the left to the lower roller surface of the third auxiliary roller 563. The second auxiliary roller 562 and the third auxiliary roller 563 are used to guide the conveying direction of the tape 7 and reduce the tension load of the first redirecting roller 51.

[0058] When the tape 7 deviates rearward, the tape sensing device senses the deviation of the tape 7, and the steering cylinder 524 controls the output end to retract. Driven by the output end of the steering cylinder 524, the steering arm 523 deflects rearward. At this time, the steering arm 523 drives the steering rack 521 to deflect synchronously via the steering shaft 522, causing the first redirecting roller 51 to generate frictional force toward the front of the tape 7, thereby driving the deviated tape 7 back to the normal position. After the tape sensing device senses that the tape 7 has returned to the normal position, it controls the first redirecting roller 51 to return to the normal position via the steering cylinder 524. When the tape 7 deviates forward, the steering cylinder 524 controls the steering rack 521 to deflect in the opposite direction based on the sensing feedback of the tape sensing device, driving the tape 7 back to the normal position.

[0059] The second deviation-correcting component 53 is described below. Figures 3 to 9 As shown, the second deflection-correcting assembly 53 includes a support frame 531, a deflection-correcting roller 532, an elastic member, and a guide rod 534. Both the front and rear side plates 31 and 32 have vertically extending slide grooves 35. The support frame 531 is located to the left of the second auxiliary roller 562 and extends in the front-to-back direction. The front and rear ends of the support frame 531 slide up and down in the slide grooves 35. Two guide rods 534 extend in the vertical direction and are fixed to the front and rear ends of the support frame 531, respectively. The upper ends of the two guide rods 534 pass through the front and rear side plates 31 and 32, respectively. The elastic member is a spring 533, which is sleeved on the guide rod 534 and located between the support frame 531 and the front and rear side plates 31 and 32, respectively, to push the support frame 531 downward.

[0060] The correcting roller 532 is a conical roller, and there are two of them. The two correcting rollers 532 are symmetrically arranged front to back and are installed on the support frame 531 to rotate around the axis. The conical surface of the front correcting roller 532 faces forward, and the conical surface of the rear correcting roller 532 faces backward. The conical surfaces of the two correcting rollers 532 both have circumferentially extending spiral flanges 535. The rotation direction of the spiral flange 535 on the front correcting roller 532 is left-handed, and the rotation direction of the spiral flange 535 on the rear correcting roller 532 is right-handed. Driven by the adhesive tape 7 below them, the two correcting rollers 532 rotate counterclockwise. Because the linear velocity of the thicker end of the correcting roller 532 is greater than that of the thinner end, the thinner end of the correcting roller 532 exerts a reverse friction force on the adhesive tape 7 as it rotates. The spiral flange 535 also creates a component of this friction force that drives the adhesive tape 7 back to its proper position. When the adhesive tape 7 deviates, the correcting roller 532 can use this component to correct the deviation of the adhesive tape 7. The lowermost busbars of the two correcting rollers 532 are located on the same horizontal plane, increasing the contact area between the spiral flange 535 and the adhesive tape 7. This, in turn, increases the friction force used by the correcting roller 532 to drive the adhesive tape 7 back to its proper position, thereby improving the correcting effect of the correcting roller 532.

[0061] The provision of spring 533 enhances the ability of the traveling trolley 2 to adjust the tension of the adhesive tape 7. When the tension of the adhesive tape 7 is low, the spring 533 pushes the support frame 531 downward, causing the two correcting rollers 532 mounted on the support frame 531 to press the adhesive tape 7 downward, thereby maintaining the tension of the adhesive tape 7. When the tension of the adhesive tape 7 is high, the adhesive tape 7 can push the correcting rollers 532 upward, causing the support frame 531 to move upward. At this time, the spring 533 is compressed, reducing the tension of the adhesive tape 7. In addition, the provision of spring 533 maintains stable contact between the correcting rollers 532 and the adhesive tape 7 below them, thereby facilitating stable correction of the adhesive tape 7 by the correcting rollers 532.

[0062] The auxiliary roller assembly 56 also includes a first auxiliary roller 561 located to the left of the deflection correction roller 532. The front and rear ends of the roller shaft of the first auxiliary roller 561 are fixed to the front side plate 31 and the rear side plate 32, respectively. The adhesive tape 7 passes from the left around the upper roller surface of the first auxiliary roller 561, then around the lower roller surfaces of the two deflection correction rollers 532, and then around the upper roller surface of the second auxiliary roller 562 before being conveyed to the right. The adhesive tape sensing device is a pressure sensor 525, two of which are mounted on the lower side of the roller shaft of the first auxiliary roller 561. These pressure sensors 525 detect the deflection of the adhesive tape 7 by measuring the pressure difference between the front and rear ends of the first auxiliary roller 561. The pressure sensors 525 are connected to the steering cylinder 524 via wires, so that feedback from the pressure sensors 525 controls the rotation of the bogie 521. The arrangement of the first auxiliary roller 561, the second auxiliary roller 562 and the spring 533 can always maintain frictional contact between the spiral flange 535 and the adhesive tape 7 on its lower side, thereby preventing the adhesive tape 7 from being offset and reducing the tension fluctuation of the adhesive tape 7 in the tape storage bin, thereby improving the operational stability of the tape storage bin.

[0063] like Figure 3 and Figure 7 As shown, the second bend roller 54 is a circular roller located to the right of the first bend roller 51. The lifting mechanism includes two vertically extending lifting cylinders 55, mounted on the front and rear side plates 31 and 32, respectively. The front and rear ends of the roller shaft of the second bend roller 54 are mounted on the output ends of the two lifting cylinders 55, respectively, to drive the second bend roller 54 up and down. The adhesive tape 7, which has passed around the lower roller surface of the fourth auxiliary roller 564 and is output to the right, passes around the right roller surface of the second bend roller 54 and is then transported to the left. The adhesive tape 7 passes over the deflection correction roller 532 and then around the left roller surface of the guide roller 81 and is transported to the right. When the second bend roller 54 moves downward to a predetermined position, the adhesive tape 7 on its upper side comes into frictional contact with the upper side of the deflection correction roller 532. The spiral flange 535 acts to correct the deflection of the upper tape 7, enhancing the deflection correction effect of the tape storage bin.

[0064] The auxiliary roller assembly 56 further includes a fourth auxiliary roller 564 located to the lower left of the second redirecting roller 54. The fourth auxiliary roller 564 is used to limit the running height of the tape 7 that passes around the second redirecting roller 54 and maintain the tension of the tape 7 to prevent the tape 7 from sagging excessively.

[0065] like Figure 3 and Figure 7As shown, the offset detection device 6 includes an offset sensing plate 61, a sensing element, and a traction wheel 63. The offset sensing plate 61 is a rectangular plate extending forward and backward, with its center hinged to the cross plate 33. The hinge axis extends vertically, allowing the offset sensing plate 61 to rotate horizontally around the hinge axis. The sensing element is a sensing cylinder 62, two of which are hinged to the front and rear ends of the cross plate 33. The output ends of both sensing cylinders 62 are hinged to the offset sensing plate 61. The offset of the traveling trolley 2 is detected by the extension and contraction of the two sensing cylinders 62. A wire connects the sensing cylinder 62 to the lifting cylinder 55 to enhance the belt storage bin's ability to correct deviation when the traveling trolley 2 deviates. The traction wheel 63 is used to connect to the traction equipment on the belt conveyor to provide the driving force for the traveling trolley 2 to move left and right.

[0066] The working principle of the automatic deviation-correcting belt conveyor storage bin is summarized as follows:

[0067] During the operation of the belt conveyor, under the joint action of the first auxiliary roller 561, the second auxiliary roller 562 and the spring 533, the lower side surfaces of the two correcting rollers 532 can always maintain frictional contact with the belt 7. While the two correcting rollers 532 are driven to rotate by the lower side belt 7, the spiral flanges 535 on the two correcting rollers 532 can provide friction force for the belt 7 to move toward the center line of the traveling trolley 2 and drive the belt 7 to reset.

[0068] When the adhesive tape 7 is biased to one side, the pressure sensors 525 on the front and rear sides of the first auxiliary roller 561 detect a pressure difference. At this time, the steering cylinder 524 drives the first redirecting roller 51 to rotate through the steering arm 523 and the steering shaft 522. The rotated first redirecting roller 51 provides a reset friction force to the adhesive tape 7, driving the adhesive tape 7 to reset. After the pressure difference between the two pressure sensors 525 disappears, the first redirecting roller 51 returns to a horizontal position under the drive of the steering cylinder 524.

[0069] When the traveling trolley 2 is offset as a whole, the offset detection device 6 detects the offset of the traveling trolley 2 through two sensing cylinders 62. At this time, the lifting cylinder 55 drives the second redirecting roller 54 to move downward, so that the tape 7 on the upper side of the correcting roller 532 is pressed tightly against the upper side of the correcting roller 532. The friction contact between the correcting roller 532 and the tape 7 on the upper and lower sides enhances the correction ability of the tape storage bin.

[0070] Embodiment 2 of the belt storage bin of a belt conveyor capable of automatically correcting deviation provided by the present invention:

[0071] The main difference between it and Example 1 is:

[0072] In embodiment 1, the driving device is a steering cylinder.

[0073] In this embodiment, the driving device is an electric cylinder or a hydraulic cylinder.

[0074] Embodiment 3 of the belt storage bin of a belt conveyor capable of automatically correcting deviation provided by the present invention:

[0075] The main difference between it and Example 1 is:

[0076] In embodiment 1, the elastic member is a spring.

[0077] In this embodiment, the elastic member is elastic rubber.

[0078] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description. Therefore, the above-mentioned directions or positional relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0079] In addition, in the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A belt conveyor storage bin capable of automatically correcting deviation, comprising a frame, a belt, a fixed roller group located at the left end of the frame, and a traveling trolley slidably mounted on the frame, wherein the traveling trolley comprises a frame and a movable roller group. The belt is input from the right end of the frame and alternately passes between the fixed roller group and the movable roller group, and is output from the left end of the frame. The invention is characterized in that: The movable roller group includes a first redirecting roller, a first deviation correcting assembly, and a second deviation correcting assembly. The first redirecting roller is a drum-shaped roller. The first deviation correcting assembly includes a bogie, a belt sensing device, and a driving device. The first redirecting roller is rotatably mounted on the bogie, and the bogie is rotatably mounted on the vehicle frame around a left-right axis. The belt sensing device is used to identify the bias state of the belt, and the driving device is used to control the up and down deflection of the bogie under feedback from the belt sensing device. The second deflection correction assembly is located on the left side of the first redirecting roller, and includes a support frame slidably mounted on the vehicle frame, two deflection correction rollers, and an elastic member. The deflection correction rollers are tapered rollers, which are mounted on the support frame for rotation around an axis. The conical surfaces of the two deflection correction rollers are provided with circumferentially extending spiral flanges, and the rotation directions of the two spiral flanges are opposite. The two deflection correction rollers are symmetrical front to back and the conical surfaces are arranged in opposite directions. The lower surfaces of the deflection correction rollers are in rotational contact with the belt, so that the belt is driven to the center through the spiral flanges. The elastic member is located between the support frame and the vehicle frame and is used to drive the deviation-correcting roller to push the tape downward; The first deviation-correcting assembly further includes a fixed plate, a steering shaft, and a steering arm. The fixed plate is a rectangular plate extending forward and backward and fixed to the vehicle frame. The steering shaft extends in the left-right direction and passes through the middle of the fixed plate. The left end of the steering shaft is fixedly connected to the bogie, and the right end of the steering shaft is fixedly connected to the steering arm. The driving device is a steering cylinder. The steering cylinder is hinged to the fixed plate, and its output end is fixedly connected to the steering arm to drive the bogie to deflect up and down through the steering cylinder. The movable roller group also includes a second redirecting roller and a lifting device. The second redirecting roller is a circular roller. The second redirecting roller is located on the right side of the first redirecting roller. The tape passes over the right roller surface of the second redirecting roller and extends to the left on the upper side of the correcting roller. The lifting device is installed on the frame. The roller shaft of the second redirecting roller is rotatably installed on the lifting device. The lifting device is used to drive the second redirecting roller to move up and down under the feedback of the offset detection device, so that the tape and the spiral flange on the upper side of the correcting roller are in friction contact / move away from each other.

2. The belt conveyor storage bin capable of automatically correcting deviation according to claim 1, characterized in that: The lowermost generatrixes of the two deviation-correcting rollers are located on the same horizontal plane to increase the contact area between the spiral flange and the lower adhesive tape.

3. The belt conveyor storage bin capable of automatically correcting deviation according to claim 1, characterized in that: The traveling trolley also includes an offset detection device, which is located at the right end of the frame and includes an offset sensing plate, a sensing member and a traction wheel. The offset sensing plate extends in the front-to-back direction, and its middle part is hinged to the frame; the traction wheel is rotatably installed on the right side of the sensing plate for connecting to an external traction device. The sensing member is located between the sensing plate and the frame and is used to detect the offset state between the traveling trolley and the sensing plate.

4. The belt conveyor storage bin capable of automatically correcting deviation according to claim 1, characterized in that: A first auxiliary roller and a second auxiliary roller are respectively provided on the left and right sides of the correcting roller. The first auxiliary roller and the second auxiliary roller are used to support the tape to cooperate with the correcting roller to slow down the tension fluctuation of the tape under the action of the elastic member.

5. A belt conveyor storage bin capable of automatically correcting deviation according to any one of claims 1 or 4, characterized in that: The elastic member is a spring.

6. The belt conveyor storage bin capable of automatically correcting deviation according to claim 4, characterized in that: The tape sensing device is a pressure sensor. There are two pressure sensors installed at the front and rear ends of the left auxiliary roller respectively to identify the bias state of the tape through the pressure difference between the front and rear ends of the auxiliary roller.

7. The belt conveyor storage bin capable of automatically correcting deviation according to claim 1, characterized in that: The lifting device is two lifting cylinders installed on the frame. The two lifting cylinders are respectively installed on the front and rear sides of the frame. The output ends of the two lifting cylinders are fixedly connected to the front and rear ends of the roller shaft of the second redirecting roller.

8. The belt conveyor storage bin capable of automatically correcting deviation according to claim 1, characterized in that: The spiral flange is made of rubber.

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