Double-roller type deviation rectifying structure for return stroke section of belt conveyor

Abstract

The utility model provides a belt conveyor return stroke section double-roller type deviation rectifying structure which comprises a supporting frame and a carrier roller frame, a return stroke roller is connected to the carrier roller frame in a supporting mode, a rotating assembly is arranged between a carrier roller cross beam of the carrier roller frame and the middle of a supporting cross beam, and side vertical roller supports are fixedly connected to the two ends of the same side of the carrier roller cross beam respectively. Each side vertical roller support is provided with a deviation rectifying side vertical roller, the rotating axis of each deviation rectifying side vertical roller is perpendicular to the rotating axis of the return roller, and the distance between the deviation rectifying side vertical rollers on the two sides is smaller than the axial length of the return roller. A deviation rectifying transverse roller is further installed on the carrier roller frame, the two ends of a roller shaft of the deviation rectifying transverse roller are connected with the roller passing side longitudinal beams on the corresponding sides in a supporting mode respectively, the deviation rectifying transverse roller is located over the return roller, a belt penetrating gap for a return section conveying belt to penetrate through is reserved between the deviation rectifying transverse roller and the return roller, and the middles of roller bodies of the two deviation rectifying side vertical rollers are located right in front of the belt penetrating gap. The belt deviation problem of the return stroke section can be effectively solved, the structure is simple, fast disassembly and assembly can be achieved, and installation and maintenance are convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of belt conveyor correction structure, and in particular relates to a double roller correction structure for the return section of a belt conveyor. Background Technology

[0002] Belt conveyors are widely used in power plants, coal mines, ports, chemical industries, and other sectors. Their stable operation directly affects conveying efficiency and capacity. In actual operation, belt misalignment in the carrying or return sections is a significant factor affecting the overall stability of the machine. Corresponding correction structures are typically designed and implemented to eliminate this impact on the normal operation of the belt conveyor. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model proposes a corresponding correction structure for the return segment, specifically as follows:

[0004] The return section of the belt conveyor features a double-roller correction structure, including a support frame and an idler frame. The two ends of the return roller's shaft are respectively supported and connected to two idler side longitudinal beams of the idler frame. A rotating component is located between the idler crossbeam and the support crossbeam of the idler frame. Side vertical roller brackets are fixed to both ends of the same side of the idler crossbeam. Each side vertical roller bracket is equipped with a correction side vertical roller, which can rotate around its shaft. The rotation axis is perpendicular to the rotation axis of the return roller, and the distance between the two correction side vertical rollers is less than the axial length of the return roller. A correction cross roller is also installed on the idler frame. The two ends of the correction cross roller's shaft are respectively supported and connected to the corresponding side longitudinal beams of the roller. The correction cross roller is located directly above the return roller, and there is a belt-passing gap between them for the return section conveyor belt to pass through. The middle of the two correction side vertical rollers is located directly in front of the belt-passing gap.

[0005] Furthermore, a first lifting adjustment unit is provided between each end of the support beam of the support frame and the corresponding support longitudinal beam.

[0006] Furthermore, the first lifting adjustment unit includes: a first nut welded and fixed to the corresponding end of the support beam; a first passage opening on the corresponding side support longitudinal beam for the first nut to pass through and for it to move up and down; a first lifting plate welded and fixed above the first passage opening on the support longitudinal beam; a through hole in the middle of the first lifting plate; a first screw rod with a bolt head passing through the through hole of the first lifting plate and being screwed to the first nut; the bolt head of the first screw rod being suspended on the first lifting plate; the first screw rod and the through hole on the first lifting plate being in clearance or sliding fit; and the first screw rod and the first nut being threadedly connected.

[0007] Furthermore, a hexagonal slotted nut is screwed to the lower end of the first screw. A pin hole is provided at the exposed end of the first screw body below the hexagonal slotted nut. After the cotter pin passes through the pin hole, its two ends are respectively embedded in the corresponding anti-rotation grooves of the hexagonal slotted nut.

[0008] Furthermore, the first passage is slidably connected to both sides of the first thread mother part.

[0009] Furthermore, a second lifting adjustment unit is provided between each end of the straightening crossbar and the corresponding side longitudinal beam of the idler roller. The height of the straightening crossbar off the ground is adjusted by the second lifting adjustment unit, thereby adjusting the size of the belt threading gap between the straightening crossbar and the return roller.

[0010] Furthermore, the second lifting adjustment unit includes: the corresponding end of the correction roller shaft is supported and fixed by a correction roller shaft support frame, the correction roller shaft support frame is welded and fixed with a second nut, the corresponding side of the idler roller side longitudinal beam is provided with a second passage for the second nut to pass through and has space for its upper and lower movement, the idler roller side longitudinal beam is welded and fixed with a second lifting plate above the second passage, the second lifting plate is provided with a through hole in the middle, the second screw rod with a bolt head passes through the through hole of the second lifting plate and is screwed to the second nut and passes through, the bolt head of the second screw is suspended on the second lifting plate, the second screw rod and the through hole of the second lifting plate are clearance or sliding fit, the second screw rod and the second nut are threadedly connected.

[0011] Furthermore, a hexagonal slotted nut is screwed to the lower end of the second screw. A pin hole is provided at the exposed end of the second screw body below the hexagonal slotted nut. After the cotter pin passes through the pin hole, both ends are respectively embedded in the corresponding anti-rotation grooves of the hexagonal slotted nut.

[0012] Furthermore, the correction roller support frame includes a support plate, on which a shaft groove is formed, and the shaft groove forms an opening on one side of the support plate for the roller shaft to be inserted. The support plate is bent to the same side on both sides of the shaft groove to form connecting side plates. The two ends of the mounting plate of the second nut are welded and fixed to the ends of the two connecting side plates respectively. The end of the correction roller shaft is inserted into the shaft groove through the opening, and the locking bolt is screwed through the screw hole on the two connecting side plates to clamp the end of the roller shaft between the locking bolt and the bottom of the shaft groove.

[0013] Furthermore, the opening of the shaft groove faces the opposite direction to the direction of travel of the conveyor belt in the return section.

[0014] This invention can effectively solve the problem of belt misalignment on the return section. It has a simple structure and can be quickly disassembled and assembled, making it easy to install and maintain. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0017] Figure 2 This is a side view schematic diagram of an embodiment of the present utility model;

[0018] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0019] Figure 4 A three-dimensional schematic diagram of the correction roller support frame from two perspectives;

[0020] Figure 5 This is a three-dimensional schematic diagram of the side longitudinal beam of the idler roller and the correction roller support frame and return roller support frame on it. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] In the description of the embodiments of this utility model, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in when in use, or the orientation or positional relationship that is commonly understood by those skilled in the art. It is only for the convenience of describing this utility model or simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] In this invention, "multiple" refers to two or more (including two). The terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0024] Unless otherwise explicitly stated and limited, the terms “set up,” “install,” and “connect” should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a direct connection or an indirect connection through an intermediate medium.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] As shown in the figure, this utility model includes a support frame 1 and a roller frame 2. The support frame 1 is composed of a support crossbeam 11 and two support side longitudinal beams 12 respectively fixed to its two ends. The roller frame 2 is composed of a roller crossbeam 21 and two roller side longitudinal beams 22 respectively fixed to its two ends. The roller shaft of the return roller 4 is supported and connected to the two roller side longitudinal beams 22 of the roller frame 2 at both ends. The roller frame 2 is located between the support crossbeam 11 and the support side longitudinal beams 12 on both sides of the support frame 1. A rotating component 3 is provided between the roller crossbeam 21 and the middle of the support crossbeam 11.

[0027] Side roller brackets 61 are fixed to both ends of the same side of the idler beam. Each side roller bracket 61 is equipped with a correction side roller 6. The roller shaft of the correction side roller 6 is fixed to the corresponding side roller bracket 61. The correction side roller 6 can rotate around the roller shaft, and the rotation axis is perpendicular to the rotation axis of the return roller 4. The distance between the two correction side rollers 6 is less than the axial length of the return roller 4. A correction cross roller 5 is also installed on the idler frame 2. The two ends of the roller shaft of the correction cross roller 5 are respectively supported and connected to the corresponding side longitudinal beam 22. The correction cross roller 5 is located directly above the return roller 4 and there is a belt threading gap between them for the return section conveyor belt to pass through. The middle part of the roller body of the two correction side rollers 6 is located directly in front of the belt threading gap.

[0028] When the conveyor belt on the return section deviates to the left (or right) in the forward direction, the left (or right) straight roller 6 provides lateral rolling correction and restraint to the right (or left), while the straightening cross roller 5 located directly above the return roller 4 provides rolling downward correction and restraint. The straightening cross roller 5 and the straightening roller 6 work together to better correct the left and right and up and down of the conveyor belt on the return section, and can more effectively prevent the extreme condition of the conveyor belt coming off.

[0029] Furthermore, this utility model also provides a structural embodiment that allows for the overall adjustment of the ground clearance of the support beam 11, thereby driving the idler frame 2, return roller 4, correction cross roller 5, and correction side vertical roller 6 on it, and is easy to disassemble and assemble. Specifically, a first lifting adjustment unit 7 is provided between each end of the support beam 11 and the corresponding side longitudinal beam 12.

[0030] Combination Figure 1 and Figure 2As shown, the first lifting adjustment unit 7 includes: a first screw nut 73 welded and fixed to the corresponding end of the supporting crossbeam 11; a first passage 121 for the first screw nut 73 to pass through and for it to move up and down is opened on the corresponding side of the supporting longitudinal beam 12; a first lifting plate 71 is welded and fixed above the first passage 121 on the supporting longitudinal beam 12; a through hole is opened in the middle of the first lifting plate 71; a first screw 72 with a bolt head 721 passes through the through hole of the first lifting plate 71 and is screwed to the first screw nut 73 and passes through it; the bolt head 721 of the first screw 72 is suspended on the first lifting plate 71; the first screw 72 is in clearance or sliding fit with the through hole on the first lifting plate 71 to facilitate the rotation of the first screw 72; the first screw 72 is threadedly connected to the first screw nut 73; the height of the supporting crossbeam 11 from the ground can be adjusted by rotating the first screw 72 through the screw screw and screw nut pair cooperation principle.

[0031] Furthermore, to prevent the first screw nut 73 from moving downwards and detaching from the first screw 72 due to vibration, thus causing the support beam 11 to fall, a hexagonal slotted nut 74 is screwed to the lower end of the first screw 72. A pin hole is provided at the end of the first screw body exposed below the hexagonal slotted nut 74. After the cotter pin 75 passes through the pin hole, its two ends are respectively embedded in the corresponding anti-rotation grooves 741 of the hexagonal slotted nut 74. The cotter pin 75 prevents the hexagonal slotted nut 74 from rotating, while the hexagonal slotted nut 74 prevents the first screw nut 73 from falling downwards by pushing and limiting it.

[0032] Preferably, the first passage 121 is slidably connected to both sides of the first thread mother part 73, and the first passage 121 simultaneously serves as a guide for the lifting and lowering of the first thread mother part 73.

[0033] This utility model also provides a structural embodiment that can adjust the belt threading gap between the straightening cross roller 5 and the return roller 4 and is easy to disassemble and assemble. Specifically, a second lifting adjustment unit 8 is provided between each end of the straightening cross roller 5 and the corresponding side longitudinal beam 22 of the idler roller. The height of the straightening cross roller 5 off the ground is adjusted by the second lifting adjustment unit 8, thereby adjusting the belt threading gap between the straightening cross roller 5 and the return roller 4.

[0034] Combination Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the second lifting adjustment unit 8 includes: the corresponding end of the straightening cross roller 5 is supported and fixed by a straightening roller support frame 9, the straightening roller support frame 9 is welded and fixed with a second wire nut 83, the corresponding side of the idler roller side longitudinal beam 22 is provided with a second passage 221 for the second wire nut 83 to pass through and for it to move up and down, the idler roller side longitudinal beam 22 is welded and fixed with a second lifting plate 81 above the second passage 221, the second lifting plate 81 is provided with a through hole in the middle, and a second screw with a bolt head 821 is provided. The rod 82 passes through the through hole of the second lifting plate 81 and is screwed to the second screw nut 83. The bolt head 821 of the second screw 82 is suspended on the second lifting plate 81. The rod body of the second screw 82 is in clearance or sliding fit with the through hole on the second lifting plate 81 to facilitate the rotation of the second screw 82. The rod body of the second screw 82 is threadedly connected to the second screw nut 83. By rotating the second screw 82, the ground clearance of the correction cross roller 5 and the belt threading gap between the correction cross roller 5 and the return roller 4 can be adjusted through the screw and screw nut pair cooperation principle.

[0035] Furthermore, to prevent the second screw nut 83 from moving downwards and disengaging from the second screw 82 due to vibration, thus causing the straightening crossbar 5 to fall off, a hexagonal slotted nut 84 is screwed to the lower end of the second screw 82. A pin hole is provided at the exposed end of the second screw body below the hexagonal slotted nut 84. After the cotter pin 85 passes through the pin hole, its two ends are respectively embedded in the corresponding anti-rotation grooves of the hexagonal slotted nut 84. The cotter pin 85 prevents the hexagonal slotted nut 84 from rotating, while the hexagonal slotted nut 84 prevents the second screw nut 83 from falling off by pushing and limiting it.

[0036] Preferably, the second passage 221 is slidably connected to both sides of the mounting plate 831 of the second wire nut 83, and the second passage 221 also serves as a guide for the lifting and lowering of the second wire nut 83.

[0037] Furthermore, this utility model also provides a structural embodiment of a correction roller support frame 9 for supporting and fixing the corresponding end of the correction roller 5: the correction roller support frame 9 includes a support plate 90, on which a shaft groove 91 is provided, and the shaft groove 91 forms an opening for the roller shaft to be inserted on one side of the support plate 90. The support plate 90 is bent to the same side on both sides of the shaft groove 91 to form connecting side plates 92. The two ends of the mounting plate 831 of the second wire nut 83 are welded and fixed to the ends of the two connecting side plates 92, thereby fixing the second wire nut 83 to the correction roller support frame 9. The end of the correction roller 5 is inserted into the shaft groove 91 through the opening. The locking bolt 94 is screwed through the screw hole 93 on the two connecting side plates 92, clamping the end of the roller between the locking bolt 94 and the bottom of the shaft groove 91 to prevent the roller from coming out of the shaft groove 91. This structure is simple and convenient for quick assembly and disassembly. Furthermore, the opening of the shaft groove 91 faces the opposite direction to the direction of the conveyor belt travel in the return section, so that the bottom of the groove bears the main force direction, avoiding stress on the locking bolt 94 and improving its service life.

[0038] Furthermore, this utility model also provides a structural embodiment of a return roller shaft support frame 9' for supporting and fixing the corresponding end of the return roller 4 shaft: the return roller shaft support frame 9' includes a support plate 90', on which a shaft groove 91' is provided, and the shaft groove 91' forms an opening for the roller shaft to be inserted on one side of the support plate 90. The support plate 90 is bent to the same side on both sides of the shaft groove 91 to form connecting side plates 92'. The ends of the two connecting side plates 92' are welded and fixed to the side longitudinal beam 22 of the idler roller, thereby fixing the return roller shaft support frame 9' to the side longitudinal beam 22 of the idler roller. The opening of the shaft groove 91' faces upward, i.e., towards the upward-facing straightening crossbar 5. The end of the return roller 4 shaft is inserted into the shaft groove 91' through the opening. And because of the presence of the straightening crossbar 5 above, the return roller 4 shaft cannot come out of the shaft groove 91', and there is no need to design an additional anti-detachment structure.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-roller correction structure for the return section of a belt conveyor, comprising a support frame and an idler frame, wherein the two ends of the return roller shaft are respectively supported and connected to two idler side longitudinal beams of the idler frame, and a rotating assembly is provided between the idler crossbeam and the support crossbeam of the idler frame, characterized in that, Side vertical roller brackets are fixed to both ends of the same side of the idler beam. Each side vertical roller bracket is equipped with a correction side vertical roller. The correction side vertical roller can rotate around the roller shaft, and the rotation axis is perpendicular to the rotation axis of the return roller. The distance between the correction side vertical rollers on both sides is less than the axial length of the return roller. A correction cross roller is also installed on the idler frame. The two ends of the correction cross roller are respectively supported and connected to the corresponding side longitudinal beam of the roller. The correction cross roller is located directly above the return roller, and there is a belt threading gap between them for the return section conveyor belt to pass through. The middle part of the roller body of the two correction side vertical rollers is located directly in front of the belt threading gap.

2. The double-roller correction structure for the return section of a belt conveyor as described in claim 1, characterized in that, The support beam of the support frame is equipped with a first lifting adjustment unit between each end of the support beam and the corresponding support longitudinal beam.

3. The double-roller correction structure for the return section of a belt conveyor as described in claim 2, characterized in that, The first lifting and adjusting unit includes: a first nut welded and fixed to the corresponding end of the supporting crossbeam; a first passage opening on the corresponding side of the supporting longitudinal beam for the first nut to pass through and for it to move up and down; a first lifting plate welded and fixed above the first passage opening on the supporting longitudinal beam; a through hole in the middle of the first lifting plate; a first screw rod with a bolt head passing through the through hole of the first lifting plate and being screwed to the first nut; the bolt head of the first screw rod being suspended on the first lifting plate; the first screw rod and the through hole on the first lifting plate having clearance or sliding fit; and the first screw rod and the first nut being threadedly connected.

4. The double-roller correction structure for the return section of a belt conveyor as described in claim 3, characterized in that, The lower end of the first screw is also screwed with a hexagonal slotted nut. The exposed end of the first screw body below the hexagonal slotted nut has a pin hole. After the cotter pin passes through the pin hole, its two ends are respectively embedded in the corresponding anti-rotation grooves of the hexagonal slotted nut.

5. The double-roller correction structure for the return section of a belt conveyor as described in claim 3, characterized in that, The first passage is slidably connected to both sides of the first thread mother part.

6. The double-roller correction structure for the return section of a belt conveyor as described in claim 1, characterized in that, A second lifting adjustment unit is provided between each end of the straightening crossbar and the corresponding side longitudinal beam of the idler roller. The height of the straightening crossbar off the ground is adjusted by the second lifting adjustment unit, thereby adjusting the size of the belt threading gap between the straightening crossbar and the return roller.

7. The double-roller correction structure for the return section of a belt conveyor as described in claim 1, characterized in that, The second lifting adjustment unit includes: the corresponding end of the straightening horizontal roller shaft is supported and fixed by a straightening roller shaft support frame, the straightening roller shaft support frame is welded and fixed with a second nut, the corresponding side of the idler roller side longitudinal beam is provided with a second passage for the second nut to pass through and has space for its upper and lower movement, the idler roller side longitudinal beam is welded and fixed with a second lifting plate above the second passage, the second lifting plate is provided with a through hole in the middle, the second screw rod with a bolt head passes through the through hole of the second lifting plate and is screwed to the second nut and passes through, the bolt head of the second screw is suspended on the second lifting plate, the second screw rod and the through hole of the second lifting plate are clearance or sliding fit, the second screw rod and the second nut are threadedly connected.

8. The double-roller correction structure for the return section of a belt conveyor as described in claim 7, characterized in that, The lower end of the second screw is also screwed with a hexagonal slotted nut. The exposed end of the second screw body below the hexagonal slotted nut has a pin hole. After the cotter pin passes through the pin hole, its two ends are respectively embedded in the corresponding anti-rotation grooves of the hexagonal slotted nut.

9. The double-roller correction structure for the return section of a belt conveyor as described in claim 7, characterized in that, The alignment roller support frame includes a support plate with a shaft groove. The shaft groove forms an opening on one side of the support plate for the roller to be inserted. The support plate is bent to the same side on both sides of the shaft groove to form connecting side plates. The two ends of the mounting plate of the second nut are welded and fixed to the ends of the two connecting side plates respectively. The end of the alignment roller is inserted into the shaft groove through the opening. The locking bolt is screwed through the screw hole on the two connecting side plates, clamping the end of the roller between the locking bolt and the bottom of the shaft groove.

10. The double-roller correction structure for the return section of a belt conveyor as described in claim 9, characterized in that, The opening of the shaft groove faces the opposite direction to the direction of travel of the conveyor belt on the return section.

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