Forced deviation adjusting structure of belt conveyor

Abstract

The utility model relates to the technical field of tunnel construction, in particular to a forced deviation-adjusting structure of a belt conveyor, which comprises a mounting bracket, an adjusting component for adjusting the angle of the mounting bracket is arranged at the bottom of the mounting bracket, and a carrier roller group for supporting an upper belt is fixed on the mounting bracket; the upper belt deviation adjusting module comprises an upper deviation blocking vertical roller and an upper pressing roller which are connected to the mounting bracket; the lower belt deviation adjusting module comprises a lower deviation blocking vertical roller and a lower flat carrier roller, the lower deviation blocking vertical roller and the lower flat carrier roller are connected to the mounting support, and the lower belt is supported by the lower flat carrier roller. By adopting the four-carrier-roller structure, the groove angle of the upper belt is increased, the upper deviation-blocking vertical roller, the upper pressing roller, the lower flat pressing roller, the adjusting assembly and the like are adjusted, the purpose of reducing the tension difference inside and outside the belt and forcibly correcting deviation is achieved, and the technical problem that in the prior art, a deviation adjusting structure of a belt conveyor is poor in ultra-small radius turning deviation adjusting effect is solved.

Description

Forced alignment structure of belt conveyor Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically to a forced alignment structure for a belt conveyor. Background Technology

[0002] Belt conveyors are widely used in full-face hard rock tunnel boring machines (TBMs). Small-diameter TBMs used in pumped storage power station construction require a turning radius of approximately 30 meters, which is considered an ultra-small turning radius. When the TBM turns during tunneling, the tension difference between the inner and outer sides of the belt causes severe belt misalignment. Currently available belt conveyor adjustment structures used in pumped storage, coal mining, and other fields are ineffective at adjusting for ultra-small radius turns, making it difficult to control the belt position and resulting in severe belt misalignment and material leakage. Summary of the Invention

[0003] The purpose of this utility model is to provide a forced alignment structure for belt conveyors, so as to solve the technical problem that the existing belt conveyor alignment structures have poor alignment effect when turning at very small radii. The specific technical solution is as follows:

[0004] This utility model provides a forced alignment structure for a belt conveyor. The belts of the belt conveyor are vertically connected at both ends to form a ring, creating an upper belt for transporting materials and a lower belt returning to the starting point. The forced alignment structure includes: a mounting bracket with an adjustment component at its bottom for adjusting the angle of the mounting bracket, and a set of idlers fixed on the mounting bracket for supporting the upper belt; an upper belt alignment module including an upper deflection roller and an upper pressure roller connected to the mounting bracket; and a lower belt alignment module including a lower deflection roller and a lower flat idler roller connected to the mounting bracket, with the lower flat idler roller supporting the lower belt.

[0005] A further improvement of the forced alignment structure of the belt conveyor of this utility model is that a trailer is provided below the belt conveyor, and the adjustment component includes a floating support frame and an angle adjustment component. The top of the floating support frame is fixed to the bottom of the mounting bracket, and the bottom of the floating support frame is used to be hinged to the trailer. The angle adjustment component is used to be connected to the trailer at an adjustable angle, and the floating support frame is connected to the angle adjustment component.

[0006] A further improvement of the forced alignment structure of the belt conveyor of this utility model is that the idler group includes four idlers, and the four idlers surround to form a V-shaped groove to support the upper belt.

[0007] A further improvement of the forced alignment structure of the belt conveyor of this utility model is that there are two upper deviation rollers, the two upper deviation rollers are spaced apart, and the two upper deviation rollers are located on both sides of the upper belt. The two upper deviation rollers are installed on the mounting bracket with adjustable spacing.

[0008] A further improvement of the forced alignment structure of the belt conveyor of this utility model is that there are two upper pressure rollers, which are respectively set above the two ends of the upper belt.

[0009] A further improvement of the forced alignment structure of the belt conveyor of this utility model is that the upper pressure roller is provided with an upper bracket, and the upper bracket is mounted on the mounting bracket with adjustable height.

[0010] A further improvement of the forced alignment structure of the belt conveyor of this utility model is that the lower belt alignment module further includes a lower flat pressure roller for pressing the lower belt, the lower flat pressure roller is provided with a lower support, and the lower support is mounted on the mounting bracket with adjustable height.

[0011] The application of the technical solution of this utility model has the following beneficial effects:

[0012] This invention relates to a forced belt misalignment structure for belt conveyors. It employs a four-roller structure to increase the groove angle of the upper belt, adjusts the upper deflector roller to press the side of the upper belt, adjusts the upper pressure roller to press the upper end of the upper belt, adjusts the tilt angle of the lower flat pressure roller to adjust the angle of the lower belt, and uses an adjustment component to adjust the angle of the entire mounting bracket. These methods reduce the tension difference between the inner and outer sides of the belt, achieving forced misalignment. This solves the problem of poor misalignment performance in existing belt conveyor misalignment structures for ultra-small radius turns. This invention offers strong anti-belt misalignment capabilities, a simple structure, easy disassembly and relocation of the bracket, convenient and flexible misalignment correction, and strong practicality.

[0013] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0015] Figure 1 is a side view of the forced alignment structure of the belt conveyor of this utility model (the arrow indicates the tunneling direction, and the conveying direction of the belt conveyor is opposite to the direction of the arrow).

[0016] Figure 2 is a cross-sectional view along line AA in Figure 1;

[0017] Figure 3 is a cross-sectional view along line BB in Figure 1;

[0018] Figure 4 is a cross-sectional view along line CC in Figure 1;

[0019] Figure 5 is a schematic diagram of the angle adjustment of the floating support frame of the forced deviation adjustment structure of the belt conveyor of this utility model;

[0020] Figure 6 is a schematic diagram of the forced deviation adjustment structure of the belt conveyor of this utility model, showing the adjustment of the upper belt position by the upper deviation vertical roller and the lower pressure roller.

[0021] Figure 7 is a schematic diagram of the forced alignment structure of the belt conveyor of this utility model, showing the adjustment of the lower belt position by tilting the lower flat pressure roller.

[0022] Figure 8 is a schematic diagram of the installation positions of the upper oblique roller, the idler roller group, and the lower flat pressure roller of the forced alignment structure of the belt conveyor of this utility model (the lower installation structure of the upper oblique roller is not shown).

[0023] The components are as follows: 1. Lower flat pressure roller; 2. Idler roller group; 3. Upper oblique vertical roller; 4. Lower flat idler roller; 5. Lower oblique vertical roller; 6. Floating support frame; 7. Mounting bracket; 8. Diagonal brace; 9. Upper bracket; 10. Sliding plate; 11. First lead screw; 12. Second lead screw; 13. Trailer; 14. Upper belt; 15. Lower belt; 16. U-shaped frame; 17. Lower bracket; 18. Mounting seat; 19. Connecting block; 20. Upper pressure roller. Detailed Implementation

[0024] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Referring to Figures 1 to 8, a forced alignment structure for a belt conveyor is provided. The belts of the belt conveyor are vertically connected at both ends to form a ring, forming an upper belt 14 for conveying materials and a lower belt 15 returning to the conveying starting point. The forced alignment structure includes: a mounting bracket 7, the bottom of which is provided with an adjustment component for adjusting the angle of the mounting bracket 7, and a set of idler rollers 2 for supporting the upper belt 14 is fixed on the mounting bracket 7; an upper belt alignment module, which includes an upper deflecting vertical roller 3 and an upper pressure roller 20 connected to the mounting bracket 7; and a lower belt alignment module, which includes a lower deflecting vertical roller 5 and a lower flat idler roller 4 connected to the mounting bracket 7, the lower flat idler roller 4 supporting the lower belt 15.

[0026] In this embodiment, as shown in Figure 1, two mounting brackets 7 are provided along the length of the belt, one at the front end and one at the rear end. Three idler roller groups 2 are spaced apart on each mounting bracket 7. A lower flat idler roller 4 is provided on the front mounting bracket 7, and two lower flat idler rollers 4 are spaced apart on the rear mounting bracket 7. A lower bias roller is provided on the front mounting bracket 7, and two lower bias rollers are spaced apart on the rear mounting bracket 7. An upper pressure roller 20 is installed at the rear of the rear mounting bracket 7. The mounting bracket 7 is T-shaped, and diagonal braces 8 are fixed between the horizontal and vertical frames of the T-shape to ensure the stability of the mounting bracket 7.

[0027] Preferably, as shown in Figures 3 and 5, a trailer 13 is provided below the belt conveyor. The adjustment assembly includes a floating support frame 6 and an angle adjustment component. The top of the floating support frame 6 is fixed to the bottom of the mounting bracket 7, and the bottom of the floating support frame 6 is hinged to the trailer 13. The angle adjustment component is used to connect to the trailer 13 at an adjustable angle, and the floating support frame 6 is connected to the angle adjustment component. In this embodiment, a sliding plate 10 is provided on the trailer 13. The sliding plate 10 can slide relative to the body of the trailer 13. A hinge seat is provided on the sliding plate 10. The bottom of the floating support frame 6 is V-shaped, and the tip of the V-shape has a hinge hole for hinged to the hinge seat, thereby enabling the floating support frame 6 to rotate relative to the hinge seat. The angle adjustment component is a first lead screw 11. A mounting base 18 is provided on the sliding plate 10 for the adjustable installation of the first lead screw 11. The first end of the first lead screw 11 is connected by a double half-shaft, and the second end is equipped with a handle. When the angle needs to be adjusted, the handle is rotated. Because the first end is connected, the length of the first lead screw 11 must change angle when the handle is rotated, thus achieving angle adjustment of the mounting bracket 7. Additionally, the side of the floating support frame 6 is provided with a connecting block 19 connected to the first lead screw 11. Therefore, when the angle of the first lead screw 11 is adjusted on the mounting base 18, the connection between the connecting block 19 and the first lead screw 11 causes the floating support frame 6 to adjust its angle simultaneously with the first lead screw 11, thereby causing the mounting bracket 7 at the top of the floating support frame to also adjust its angle accordingly.

[0028] Furthermore, a second lead screw 12 is connected between the articulated seat and the trailer 13 body. An adjusting nut is screwed onto the second lead screw 12. By adjusting the screw length of the second lead screw 12, the position of the floating support frame 6 and the mounting bracket 7 on the trailer 13 can be adjusted. When the floating support frame 6 and the mounting bracket 7 move towards the inside of the turn, the tension difference between the inside and outside can be reduced.

[0029] Preferably, as shown in Figures 2 and 6, the idler group 2 includes four idlers, which are arranged to form a V-shaped groove supporting the upper belt 14. The four idlers are staggered and fixed on the mounting bracket 7. When the conveyor belt turns while the tunneling machine is excavating, the double-row staggered idler group 2 allows the groove angle of the upper belt 14 to reach 65°, thus giving the upper belt 14 a V-shaped groove. Existing conveyor belt structures cannot achieve this groove angle. The V-shaped groove has stronger geometric stability, and the larger groove angle also increases the lateral bending of the conveyor belt, causing it to need to overcome greater deformation resistance during lateral movement, thereby suppressing the upper belt 14 from deviating. The state of the upper belt 14 on the idlers is shown in Figure 2.

[0030] Preferably, as shown in Figures 3 and 6, there are two upper deflecting rollers 3, which are spaced apart and located on both sides of the upper belt 14. The two upper deflecting rollers 3 are adjustablely mounted on the mounting bracket 7. A U-shaped frame 16 is provided outside the upper deflecting rollers 3. The U-shaped frame 16 is fixed on the mounting bracket 7, and the opening of the U-shaped frame 16 faces the upper belt 14. The two ends of the upper deflecting rollers 3 are connected to the inner sides of the two flanges of the U-shaped frame 16. By adjusting the position of the upper deflecting rollers 3 on the flanges, that is, adjusting the distance between the upper deflecting rollers 3 and the web of the U-shaped frame 16, the upper belt 14 can be clamped on both sides or pushed on one side, thereby preventing the upper belt 14 from running off-center.

[0031] Preferably, as shown in FIG4, there are two upper pressure rollers 20, which are respectively arranged above the two ends of the upper belt 14.

[0032] Preferably, the upper pressure roller 20 is provided with an upper bracket 9, which is height-adjustably mounted on the mounting bracket 7. The upper bracket 9 is inverted L-shaped and includes a horizontal bar and a vertical bar. The upper pressure roller 20 is mounted on the inner side of the horizontal bar. A first strip-shaped hole is opened along the length direction on the vertical bar. The vertical bar is height-adjustably mounted on the mounting bracket 7 by bolts passing through the first strip-shaped hole, thereby realizing the height adjustment of the upper pressure roller 20, thereby pressing or releasing the upper belt 14 on both sides, and thus preventing the upper belt 14 from running off-center.

[0033] Preferably, as shown in Figure 7, the lower belt alignment module further includes a lower flat pressure roller 1 for pressing the lower belt 15. The lower flat pressure roller 1 is provided with a lower bracket 17, which is height-adjustably mounted on the mounting bracket 7. The lower bracket 17 is rod-shaped, and a second strip-shaped hole is opened along its length. The lower bracket 17 is height-adjustably mounted on the mounting bracket 7 by bolts passing through the second strip-shaped hole, thereby realizing the height adjustment of the lower flat pressure roller 1. Together with the lower flat support roller 4, it clamps or loosens the upper and lower surfaces of the lower belt 15, thereby preventing the lower belt 15 from running off track or shifting.

[0034] As the curvature of the belt gradually decreases, the tension difference between the inside and outside of the belt gradually increases. Due to the tension of the belt, the belt experiences a centripetal force. At this point, the second lead screw 12 can be used to allow the mounting brackets 7 of each section of the belt to move to different degrees towards the turning side via the sliding plate 10, better fitting the tunnel curve and reducing the tension difference. Simultaneously, the angle of the floating support frame 6 can be further adjusted via the first lead screw 11, raising the inner side of the belt. This provides a reaction force to the upper belt 14 towards the outside of the turn through the upper oblique roller 3 on the inner side (the same applies to the lower oblique roller 5), thereby achieving the self-adaptive capability of the belt frame.

[0035] When the tunnel bend increases further (e.g., a turning radius of 30m), the upper belt 14 can be adjusted downwards by adjusting the installation height of the inner upper bracket 9, causing it to press down on the inner side of the upper belt 14. Simultaneously, the upper deflector roller 3 on the U-shaped frame 16 is adjusted to move towards the center of the upper belt 14, thus applying a force to the upper belt 14 that tends towards the outside of the bend. The lower belt 15 can be adjusted by adjusting the installation height of the lower bracket 17, on the same principle as the upper belt 14 (see Figures 5-7). These adjustment measures and the structure minimize belt misalignment and ensure the stability of belt operation.

[0036] This utility model's forced belt misalignment structure achieves its purpose of reducing the tension difference between the inner and outer sides of the belt by employing a four-roller structure to increase the groove angle of the upper belt 14, adjusting the upper deflecting vertical roller 3 to squeeze the side of the upper belt 14, adjusting the upper pressure roller 20 to squeeze the upper end of the upper belt 14, adjusting the tilt angle of the lower flat pressure roller 1 to adjust the angle of the lower belt 15, and adjusting the angle of the entire mounting bracket 7 through an adjustment component. This solves the technical problem of poor belt misalignment effect in existing belt conveyor misalignment structures for ultra-small radius turns. This utility model has a strong ability to prevent belt misalignment, a simple structure, an easy-to-disassemble and move bracket, convenient and flexible misalignment correction, and strong practicality.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A forced alignment structure for a belt conveyor, wherein the belts of the belt conveyor are vertically connected at both ends to form a loop, creating an upper belt (14) for conveying materials and a lower belt (15) returning to the conveying starting point, characterized in that, The forced alignment structure includes: a mounting bracket (7), the bottom of which is provided with an adjustment component for adjusting the angle of the mounting bracket (7), and a roller group (2) for supporting the upper belt (14) is fixed on the mounting bracket (7); an upper belt alignment module, which includes an upper deflection roller (3) and an upper pressure roller (20) connected to the mounting bracket (7); and a lower belt alignment module, which includes a lower deflection roller (5) and a lower flat roller (4) connected to the mounting bracket (7), and the lower flat roller (4) supports the lower belt (15).

2. The forced alignment structure for a belt conveyor according to claim 1, characterized in that, The adjustment assembly includes a floating support frame (6) and an angle adjustment component. The top of the floating support frame (6) is fixed to the bottom of the mounting bracket (7). The bottom of the floating support frame (6) is hinged to a trailer (13) located below the conveyor belt. The angle adjustment component is angle-adjustably connected to the trailer (13) located below the conveyor belt. The floating support frame (6) is connected to the angle adjustment component.

3. The forced alignment structure of the belt conveyor according to claim 1, characterized in that, The idler group (2) includes four idlers, which surround a V-shaped groove to support the upper belt (14).

4. The forced alignment structure of the belt conveyor according to claim 1, characterized in that, The number of the upper obstruction rollers (3) is two, the two upper obstruction rollers (3) are spaced apart, and the two upper obstruction rollers (3) are located on both sides of the upper belt (14). The two upper obstruction rollers (3) are installed on the mounting bracket (7) with adjustable spacing.

5. The forced alignment structure for a belt conveyor according to claim 1, characterized in that, The number of upper pressure rollers (20) is two, and the two upper pressure rollers (20) are respectively set above the two ends of the upper belt (14).

6. The forced alignment structure for a belt conveyor according to claim 1, characterized in that, The upper pressure roller (20) is provided with an upper bracket (9), which is height-adjustably mounted on the mounting bracket (7).

7. The forced alignment structure for a belt conveyor according to claim 1, characterized in that, The lower belt alignment module also includes a lower flat roller (1) for pressing the lower belt (15). The lower flat roller (1) is provided with a lower bracket (17), and the lower bracket (17) is mounted on the mounting bracket (7) with adjustable height.

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