Belt conveyor tensioning device with automatic tensioning function

Abstract

The invention relates to the technical field of conveyor tensioning, and discloses a belt conveyor tensioning device with an automatic tensioning function, which comprises a workbench, a bottom cover arranged at the bottom of the workbench, a driven roller rotationally arranged at one end of the inner side of the workbench, and a driving roller rotationally arranged at the other end of the inner side of the workbench, the conveying belt is arranged between the driving roller and the driven roller, and the tensioning unit is arranged on the workbench. According to the belt conveyor tensioning device with the automatic tensioning function, through the first driving assembly, the transverse moving assembly pushes the conveying belt to the middle, through the pushing assembly, the vertical moving assembly pulls the conveying belt downwards, through the transverse tensioning wheel, the conveying belt is pushed and pressed, the conveying belt can be rapidly tensioned, and therefore the conveying belt can be rapidly tensioned. Materials are conveyed more stably, the conveying efficiency is improved, the situation of slipping in the material conveying process is avoided, and blockage of the materials in the conveying process is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of conveyor tensioning, and in particular to a belt conveyor tensioning device with an automatic tensioning function. Background Art

[0002] A conveyor is a mechanical device used for material transportation, also known as a continuous conveyor, which can continuously transport materials on a certain route. Most conveyors are driven by a motor to drive the transmission structure to achieve the movement of materials. For example, a belt conveyor is driven by a motor to drive the belt to move, and the belt surface is used as a carrier to complete the transportation of materials.

[0003] The conveyor needs to use a tensioning device during operation. The tensioning device plays a vital role in the conveyor. It is mainly used to adjust the tension of the conveyor belt, ensure that the conveyor belt has a sufficient wrap angle on the drive roller, and prevent the conveyor belt from slipping or falling off on the drive roller. The existing tensioning device also has the following defects: The existing tensioning device usually uses a weight suspension method to tension the conveyor belt. It relies on the weight of the weight itself to tension the belt conveyor belt through the guide roller. When adjusting the tension, it is achieved by increasing or decreasing the weight of the weight. The tension adjustment of this tensioning device needs to be done manually, which cannot be automated and is not flexible enough to adjust. The weight suspension tensioning device requires a certain installation space to hang the weight, which may impose certain restrictions on the layout and space utilization of the conveyor. The weight suspension tensioning device may take up too much space. Since the weight suspension tensioning device needs to hang the weight to provide tension, it usually needs to have a certain installation height. In addition, when adjusting the existing tensioning device, the drive motor needs to be shut down. Frequent shutdowns interrupt the normal production process, thereby affecting the overall production efficiency. Frequent motor startup requires more electricity consumption, increases energy consumption, and may also easily cause equipment failures due to shutdowns. Summary of the invention

[0004] In view of the problems in the prior art that tension adjustment requires manual operation, the adjustment is not flexible enough, too much space is required, the machine needs to be shut down for adjustment, which reduces production efficiency and increases energy consumption, a belt conveyor tensioning device with automatic tensioning function is proposed.

[0005] The present application provides a belt conveyor tensioning device with an automatic tensioning function, the purpose of which is to use automation to perform tensioning adjustment, improve production efficiency, and reduce energy consumption.

[0006] The technical solution of the present invention is: a belt conveyor tensioning device with automatic tensioning function, comprising a workbench, a bottom cover arranged at the bottom of the workbench, a driven roller rotatably arranged at one end of the inner side of the workbench, a driving roller rotatably arranged at the other end of the inner side of the workbench, and a conveyor belt arranged between the driving roller and the driven roller, and also comprising a tensioning unit arranged on the workbench; The tensioning unit includes a tensioning component arranged at the bottom of the workbench, and a power transmission component arranged at one side of the workbench, and the tensioning component includes a lateral movement component arranged at the bottom of the workbench, a first driving component arranged at the top of the lateral movement component, a vertical movement component arranged at the bottom of the lateral movement component, and a pushing component arranged at the top of the vertical movement component; The transverse moving assembly includes two symmetrically distributed fixed frames fixedly connected to the workbench, two symmetrically distributed first U-shaped seats slidably connected to the fixed frames, and transverse tensioning wheels respectively rotatably connected to the inner sides of the two first U-shaped seats, so that the conveyor belt passes around the two transverse tensioning wheels and contacts the outer sides of the two transverse tensioning wheels.

[0007] Furthermore, the first driving assembly includes a first driving motor fixedly connected to the workbench, a driving disk fixedly connected to the output shaft of the first driving motor, two strip holes centrally symmetrically opened on the driving disk, and driving rods respectively slidably connected to the inner sides of the two strip holes, and the two driving rods are respectively fixedly connected to the two first U-shaped seats.

[0008] Furthermore, the vertical moving component includes two L-shaped plates fixedly connected to the workbench and symmetrically distributed, a second U-shaped seat arranged between the two L-shaped plates, strip grooves opened on both sides of the second U-shaped seat, the L-shaped plates are slidingly connected to the inner side of the strip grooves, and a vertical tensioning wheel rotatably connected to the inner side of the second U-shaped seat, and the conveyor belt bypasses the vertical tensioning wheel and contacts its outer side.

[0009] Furthermore, the pushing assembly includes a connecting block fixedly connected to the bottom of the driving disk, a pushing rod fixedly connected to one side of the bottom of the connecting block, a pushing block fixedly connected to the top of the second U-shaped seat, a first inclined surface opened on the top of the pushing block, and a pushing spring fixedly connected between the L-shaped plate and the strip groove and the bottom end of the pushing rod is slidably connected to the first inclined surface.

[0010] Further, the power transmission component includes a second driving assembly arranged on one side of the workbench, a sliding assembly arranged on the second driving assembly, an extrusion assembly arranged on the inner side of the workbench, and a limit assembly arranged on the inner side of the extrusion assembly; The second driving assembly includes an active cavity opened on the workbench, a fixed disk rotatably connected to the inner side of the active cavity, a second driving motor fixedly connected to the workbench, an output shaft of the second driving motor extends to the inner side of the active cavity and is fixedly connected to the fixed disk, a connecting shaft fixedly connected to one end of the active roller, the connecting shaft extends to the inner side of the active cavity away from one end of the active roller, a conical block limitedly slidably connected to the end of the connecting shaft located on the inner side of the active cavity, a fixing ring fixedly connected to the conical block, a plurality of limiting blocks fixedly connected to the fixing ring and distributed in a circular array, a plurality of limiting grooves distributed in a circular array opened on the fixed disk, the limiting blocks being plugged into the inner sides of the limiting grooves.

[0011] Furthermore, the sliding assembly includes a rotating plate mounted on the connecting shaft, the rotating plate is rotatably connected to the inner wall of the movable cavity, a return spring is fixedly connected between the rotating plate and the conical block, the return spring is mounted on the connecting shaft, two symmetrically distributed sliding grooves are opened on the connecting shaft, and sliding blocks are respectively slidably connected to the inner sides of the two sliding grooves, and the two sliding blocks are fixedly connected to the conical block.

[0012] Furthermore, the extrusion assembly includes a plurality of arc-shaped protrusions fixedly connected to the driving disk and distributed in a ring array, a sliding cavity opened on the workbench, a wedge block slidably connected to the inner side of the sliding cavity, a Z-shaped rod limitedly slidably connected to one side of the wedge block, the Z-shaped rod slidably connected to the arc-shaped protrusion at one end away from the wedge block, a reset ring fixedly connected to the outside of the Z-shaped rod, a compression spring fixedly connected between the reset ring and the workbench, the compression spring is sleeved on the outside of the Z-shaped rod, and an extrusion rod fixedly connected to the other side of the wedge block, the extrusion rod extends from one end of the wedge block to the inner side of the movable cavity and is slidably connected to the outside of the conical block.

[0013] Furthermore, the limiting assembly includes a T-shaped slot opened on the wedge block, a T-shaped slider slidably connected to the inner side of the T-shaped slot, and the T-shaped slider is fixedly connected to the Z-shaped rod.

[0014] Beneficial effects of the present invention: Through the first driving component, the transverse moving component pushes the conveyor belt toward the middle, and through the pushing component, the vertical moving component pulls the conveyor belt downward, and slides on the fixed frame through the first U-shaped seat, thereby driving the transverse tensioning wheel to move, and the conveyor belt is pushed through the transverse tensioning wheel, so that the conveyor belt can be quickly tensioned, and the material is more stable during transportation, which improves the transmission efficiency, avoids slipping during material transportation, and prevents material blockage during transportation.

[0015] The L-shaped plate slides on the inner side of the strip groove, so that the second U-shaped seat can move up and down, driving the vertical tensioning wheel to move up and down. When the vertical tensioning wheel moves downward, the conveyor belt is stretched downward, and when the vertical tensioning wheel moves upward, the conveyor belt is relaxed. With the cooperation of the two transverse tensioning wheels, the conveyor belt is tensioned, which improves the transmission efficiency, avoids leakage or slipping of materials on the conveyor belt, ensures the stable operation of the equipment, and improves the degree of automation.

[0016] The conical block can be squeezed by the extrusion component. Under the action of the sliding component, the conical block slides to the side of the active roller, driving the fixed ring to move, so that the limit block is separated from the inner side of the limit groove. At this time, when the second drive motor rotates, the active roller stops rotating, so that the conveyor belt stops conveying, which is convenient for tensioning and adjusting the conveyor belt, and avoids the conveyor belt being suddenly tensioned or relaxed when the conveyor belt is tensioned and adjusted, resulting in a large impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a structural schematic diagram of the present invention without the bottom cover; Figure 3 It is a cross-sectional structural schematic diagram of the present invention; Figure 4 It is a structural schematic diagram of the tensioning unit of the present invention; Figure 5 It is a schematic diagram of the structure of the lateral moving component of the present invention; Figure 6 It is a schematic structural diagram of the first driving assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the vertical moving assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the driving component of the present invention; Fig. 9 is a schematic structural diagram of a second driving assembly of the present invention; Fig.10 It is a schematic diagram of the structure of the sliding assembly of the present invention; Fig.11 It is a schematic diagram of the structure of the extrusion assembly of the present invention; Fig.12 It is a schematic diagram of the structure of the limiting component of the present invention.

[0018] In the figure: 1. Workbench; 11. Bottom cover; 12. Conveyor belt; 13. Driven roller; 14. Active roller; 2. Horizontal moving assembly; 21. Fixed frame; 22. First U-shaped seat; 23. Horizontal tensioning wheel; 3. First driving assembly; 31. First driving motor; 32. Driving plate; 33. Strip hole; 34. Driving rod; 4. Vertical moving assembly; 41. Second U-shaped seat; 42. L-shaped plate; 43. Strip groove; 44. Vertical tensioning wheel; 5. Pushing assembly; 51. Pushing block; 52. First inclined plane; 53. Pushing rod; 54. Connecting block; 55 , push spring; 6, second drive assembly; 61, second drive motor; 62, fixed plate; 63, limit groove; 64, limit block; 65, fixed ring; 66, tapered block; 67, movable cavity; 68, connecting shaft; 7, sliding assembly; 71, rotating sheet; 72, reset spring; 73, sliding groove; 74, sliding block; 8, extrusion assembly; 81, Z-shaped rod; 82, arc-shaped protrusion; 83, reset ring; 84, compression spring; 85, wedge block; 86, extrusion rod; 87, sliding cavity; 9, limit assembly; 91, T-shaped slider; 92, T-shaped slide groove. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] Example 1, reference Figure 1-Figure 5 , which is the first embodiment of the present invention, provides a belt conveyor tensioning device with automatic tensioning function, including a workbench 1, a bottom cover 11 fixedly connected to the bottom of the workbench 1, a driven roller 13 rotatably connected to one end of the inner side of the workbench 1, an active roller 14 rotatably connected to the other end of the inner side of the workbench 1, and a conveyor belt 12 sleeved between the active roller 14 and the driven roller 13, and also includes a tensioning unit installed on the workbench 1; the tensioning unit includes a tensioning component installed at the bottom of the workbench 1, and a power transmission component installed on one side of the workbench 1, and the tensioning component includes a tensioning component installed on the workbench 1. A transverse moving component 2 is provided at the bottom of the workbench 1, a first driving component 3 is installed at the top of the transverse moving component 2, a vertical moving component 4 is installed at the bottom of the transverse moving component 2, and a pushing component 5 is installed at the top of the vertical moving component 4; the transverse moving component 2 includes two symmetrically distributed fixing frames 21 fixedly connected to the workbench 1, two symmetrically distributed first U-shaped seats 22 slidably connected to the fixing frames 21, and transverse tensioning wheels 23 respectively rotatably connected to the inner sides of the two first U-shaped seats 22, and the conveyor belt 12 passes around the two transverse tensioning wheels 23 and contacts the outer sides of the two transverse tensioning wheels 23.

[0021] Specifically, when in use, the material is placed on the conveyor belt 12, and the active roller 14 rotates on the workbench 1. Under the action of the driven roller 13, the conveyor belt 12 is driven to rotate, and then the material is transported. When the material is too heavy, the conveyor belt 12 is pressed down. In order to make the material transportation more stable, the conveyor belt 12 is tensioned by adjusting the tensioning unit, and the conveyor belt 12 is squeezed and stretched toward the middle and downwardly through the lateral moving component 2 and the vertical moving component 4, so that the conveyor belt 12 is tightened, and the lateral moving component 2 pushes the conveyor belt 12 toward the middle through the first driving component 3, and the vertical moving component 4 pulls the conveyor belt 12 downward through the pushing component 5, and slides on the fixed frame 21 through the first U-shaped seat 22, thereby driving the lateral tensioning wheel 23 to move, and the conveyor belt 12 is pushed through the lateral tensioning wheel 23, so that the conveyor belt 12 can be quickly tensioned, and the material is more stable during transportation, thereby improving the transmission efficiency, avoiding slipping during material transportation, and preventing the material from being blocked during transportation.

[0022] Reference Figure 6 The first driving assembly 3 includes a first driving motor 31 fixedly connected to the workbench 1, a driving disk 32 fixedly connected to the output shaft of the first driving motor 31, two strip holes 33 centrally symmetrically opened on the driving disk 32, and driving rods 34 respectively slidably connected to the inner sides of the two strip holes 33, and the two driving rods 34 are respectively fixedly connected to the two first U-shaped seats 22.

[0023] Specifically, by starting the first drive motor 31, which is a programmed motor, the first drive motor 31 is electrically connected to the STM32 microcontroller through a motor driver, and the STM32 microcontroller is used to program the first drive motor 31 to control its rotation and stop, thereby driving the drive disk 32 to rotate, driving the bar hole 33 to rotate, and causing the drive rod 34 to slide inside the bar hole 33, so that the drive rod 34 slides inside the bar hole 33 toward the center of the drive disk 32 or toward the outside of the drive disk 32, driving the first U-shaped seat 22 to slide, so that the first U-shaped seat 22 slides left and right on the fixed frame 21.

[0024] Reference Figure 7 The vertical moving assembly 4 includes two L-shaped plates 42 fixedly connected to the workbench 1 and symmetrically distributed, a second U-shaped seat 41 arranged between the two L-shaped plates 42, and strip grooves 43 opened on both sides of the second U-shaped seat 41. The L-shaped plate 42 is slidably connected to the inner side of the strip groove 43, and a vertical tensioning wheel 44 rotatably connected to the inner side of the second U-shaped seat 41 is rotated. The conveyor belt 12 passes around the vertical tensioning wheel 44 and contacts the outer side thereof.

[0025] Specifically, the L-shaped plate 42 slides on the inner side of the strip groove 43, so that the second U-shaped seat 41 can move up and down, driving the vertical tensioning wheel 44 to move up and down. When the vertical tensioning wheel 44 moves downward, the conveyor belt 12 is stretched downward, and when the vertical tensioning wheel 44 moves upward, the conveyor belt 12 is relaxed. With the cooperation of the two transverse tensioning wheels 23, the conveyor belt 12 is tensioned, which improves the transmission efficiency, avoids leakage or slipping of materials on the conveyor belt 12, ensures the stable operation of the equipment, and improves the degree of automation.

[0026] Reference Figure 7 and Figure 8 The pushing assembly 5 includes a connecting block 54 fixedly connected to the bottom of the driving disk 32, a pushing rod 53 fixedly connected to one side of the bottom of the connecting block 54, a pushing block 51 fixedly connected to the top of the second U-shaped seat 41, a first inclined surface 52 opened at the top of the pushing block 51, and a pushing spring 55 fixedly connected between the L-shaped plate 42 and the strip groove 43 and slidably connected to the bottom end of the pushing rod 53.

[0027] Specifically, when the driving disk 32 rotates, it drives the connecting block 54 to rotate, and drives the pushing rod 53 to rotate. Since the pushing rod 53 is fixed to one side of the bottom of the connecting block 54, the pushing rod 53 slides on the first inclined surface 52 when it rotates. Under the action of the first inclined surface 52, the pushing block 51 is squeezed and moved downward, driving the second U-shaped seat 41 to move downward, so that the L-shaped plate 42 slides upward on the inner side of the strip groove 43, squeezing the pushing spring 55, so that the vertical tensioning wheel 44 moves downward. When the pushing rod 53 slides downward on the first inclined surface 52, the pushing block 51 is not squeezed. Under the action of the pushing spring 55 returning to its original position, the L-shaped plate 42 slides downward on the inner side of the strip groove 43, so that the second U-shaped seat 41 moves upward, driving the vertical tensioning wheel 44 to move upward, so that when the driving disk 32 rotates, the two transverse tensioning wheels 23 move relative to or away from each other, and the vertical tensioning wheel 44 moves downward or upward.

[0028] Example 2, reference Figure 9-12, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the power transmission component includes a second driving assembly 6 arranged on one side of the workbench 1, a sliding assembly 7 arranged on the second driving assembly 6, an extrusion assembly 8 arranged on the inner side of the workbench 1, and a limit assembly 9 arranged on the inner side of the extrusion assembly 8; the second driving assembly 6 includes an active cavity 67 opened on the workbench 1, a fixed disk 62 rotatably connected to the inner side of the active cavity 67, a second driving motor 61 fixedly connected to the workbench 1, and the output shaft of the second driving motor 61 extends To the inner side of the active cavity 67 and fixedly connected to the fixed disk 62, a connecting shaft 68 fixedly connected to one end of the active roller 14, the connecting shaft 68 extends to the inner side of the active cavity 67 away from one end of the active roller 14, a conical block 66 limitedly slidably connected to the connecting shaft 68 at one end of the inner side of the active cavity 67, a fixing ring 65 fixedly connected to the conical block 66, a plurality of limiting blocks 64 fixedly connected to the fixing ring 65 and distributed in a circular array, a plurality of limiting grooves 63 distributed in a circular array on the fixed disk 62, and the limiting blocks 64 are plugged into the inner side of the limiting grooves 63.

[0029] Specifically, the second drive motor 61 is started to drive the fixed plate 62 to rotate. Under the action of the limit block 64 and the limit groove 63, the fixed ring 65 is driven to rotate, the conical block 66 is driven to rotate, the connecting shaft 68 is driven to rotate, and then the active roller 14 is driven to rotate. The conical block 66 can be squeezed by the extrusion component 8. Under the action of the sliding component 7, the conical block 66 slides to the side of the active roller 14, driving the fixed ring 65 to move, so that the limit block 64 is separated from the inner side of the limit groove 63. At this time, when the second drive motor 61 rotates, the active roller 14 stops rotating, so that the conveyor belt 12 stops conveying, which is convenient for adjusting the tension of the conveyor belt 12 and avoids the conveyor belt 12 being suddenly tensioned or relaxed when the tension of the conveyor belt 12 is adjusted, thereby generating a large impact force.

[0030] Reference Fig.10 The sliding assembly 7 includes a rotating piece 71 sleeved on the connecting shaft 68, the rotating piece 71 is rotatably connected to the inner wall of the active cavity 67, a return spring 72 is fixedly connected between the rotating piece 71 and the conical block 66, the return spring 72 is sleeved on the connecting shaft 68, two symmetrically distributed sliding grooves 73 are opened on the connecting shaft 68, and sliding blocks 74 are respectively slidably connected to the inner sides of the two sliding grooves 73, and the two sliding blocks 74 are fixedly connected to the conical block 66.

[0031] Specifically, when the conical block 66 slides on the connecting shaft 68, the sliding block 74 slides inside the sliding groove 73, which limits the conical block 66, preventing the conical block 66 from rotating on the connecting shaft 68 or slipping off the connecting shaft 68, thereby squeezing the reset spring 72. When the squeezing assembly 8 no longer squeezes the conical block 66, the reset spring 72 will reset, driving the conical block 66 to move away from the active roller 14, driving the fixing ring 65 to move closer to the fixing plate 62, so that the limiting block 64 is reconnected with the inner side of the limiting groove 63, so that the second drive motor 61 can drive the active roller 14 to rotate when it rotates. The rest of the structure is the same as that of the first embodiment.

[0032] Example 3, reference Fig.11 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the extrusion assembly 8 includes a plurality of arc-shaped protrusions 82 fixedly connected to the driving disk 32 and distributed in an annular array, a sliding cavity 87 opened on the workbench 1, a wedge block 85 slidably connected to the inner side of the sliding cavity 87, a Z-shaped rod 81 limitedly slidably connected to one side of the wedge block 85, the Z-shaped rod 81 is slidably connected to the arc-shaped protrusion 82 at one end away from the wedge block 85, a reset ring 83 fixedly connected to the outer side of the Z-shaped rod 81, a compression spring 84 fixedly connected between the reset ring 83 and the workbench 1, the compression spring 84 is sleeved on the outer side of the Z-shaped rod 81, and an extrusion rod 86 fixedly connected to the other side of the wedge block 85, and the extrusion rod 86 extends from one end of the wedge block 85 to the inner side of the active cavity 67 and is slidably connected to the outer side of the conical block 66.

[0033] Specifically, when the driving disk 32 rotates, the arc-shaped protrusion 82 is driven to rotate. Under the action of the arc-shaped protrusion 82, the Z-shaped rod 81 is driven to move, and the reset ring 83 is driven to move, and the compression spring 84 is squeezed, so that the Z-shaped rod 81 slides on the wedge block 85, and then the wedge block 85 is pushed to slide inside the sliding cavity 87, and the extrusion rod 86 is driven to move. The extrusion rod 86 pushes the conical block 66, so that the extrusion rod 86 slides on the outside of the conical block 66. Under the action of the conical block 66, the conical block 66 slides on the connecting shaft 68, so that the fixing ring 65 is separated from the fixing disk 62, and the limit block 64 is separated from the inner side of the limit groove 63. Separation makes the connecting shaft 68 stop rotating when the second drive motor 61 rotates, that is, the active roller 14 stops rotating, and when the Z-shaped rod 81 is no longer in contact with the arc-shaped protrusion 82, the compression spring 84 is reset, pushing the reset ring 83 to reset, and driving the Z-shaped rod 81 to move toward the drive disk 32. Under the action of the wedge block 85, the extrusion rod 86 moves away from the conical block 66, so that the limit block 64 is re-inserted with the inner side of the limit groove 63, so that the conveyor belt 12 can be conveyed again, and when the tension of the conveyor belt 12 is adjusted, the conveyor belt 12 stops conveying, so as to avoid interference with the tension adjustment of the conveyor belt 12.

[0034] Reference Fig.12 The limiting assembly 9 includes a T-shaped slot 92 provided on the wedge block 85 , a T-shaped slider 91 slidably connected to the inner side of the T-shaped slot 92 , and the T-shaped slider 91 is fixedly connected to the Z-shaped rod 81 .

[0035] Specifically, when the Z-shaped rod 81 slides on the wedge block 85, the T-shaped slider 91 slides inside the T-shaped slide groove 92, so that when the Z-shaped rod 81 slides, it can push the wedge block 85 to move, while preventing the Z-shaped rod 81 from slipping off the wedge block 85. The rest of the structure is the same as that of Example 2.

[0036] In summary, the working principle of the present invention is as follows: when in use, when it is necessary to tension the conveyor belt 12, the first drive motor 31 is started to drive the drive disk 32 to rotate. Under the action of the bar hole 33 and the drive rod 34, the first U-shaped seat 22 is driven to move, the connecting block 54 is driven to rotate, and the push rod 53 is driven to rotate. Since the push rod 53 is fixed to one side of the bottom of the connecting block 54, the push rod 53 slides on the first inclined surface 52 when rotating. Under the action of the first inclined surface 52, the push block 51 is squeezed and moved downward, driving the second U-shaped seat 41 to move downward, and then driving the two horizontal tensioning wheels 23 to move relative to or away from each other, driving the vertical tensioning wheel 44 to move downward or upward, and the conveyor belt 12 is quickly tensioned or relaxed. When the drive disk 32 rotates, it drives the arc convex The starter 82 rotates, and under the action of the arc-shaped protrusion 82, the Z-shaped rod 81 is driven to move, and the reset ring 83 is driven to move, and the compression spring 84 is squeezed, so that the Z-shaped rod 81 slides on the wedge block 85, and then the wedge block 85 is pushed to slide inside the sliding cavity 87, driving the extrusion rod 86 to move, and the conical block 66 is pushed by the extrusion rod 86, so that the extrusion rod 86 slides on the outside of the conical block 66, and under the action of the conical block 66, the conical block 66 slides on the connecting shaft 68, squeezing the reset spring 72, so that the fixing ring 65 is separated from the fixing plate 62, and the limit block 64 is separated from the inner side of the limit groove 63, so that when the second drive motor 61 rotates, the conveyor belt 12 stops conveying, which is convenient for tensioning and adjusting the conveyor belt 12, and avoids interference with the tensioning adjustment when the conveyor belt 12 is tensioned.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A belt conveyor tensioning device with an automatic tensioning function, comprising a workbench (1), a bottom cover (11) arranged at the bottom of the workbench (1), a driven roller (13) rotatably arranged at one end of the inner side of the workbench (1), a driving roller (14) rotatably arranged at the other end of the inner side of the workbench (1), and a conveyor belt (12) arranged between the driving roller (14) and the driven roller (13), characterized in that: It also includes a tensioning unit arranged on the workbench (1); The tensioning unit comprises a tensioning component arranged at the bottom of the workbench (1), and a power transmission component arranged at one side of the workbench (1), the tensioning component comprising a lateral movement component (2) arranged at the bottom of the workbench (1), a first driving component (3) arranged at the top of the lateral movement component (2), a vertical movement component (4) arranged at the bottom of the lateral movement component (2), and a pushing component (5) arranged at the top of the vertical movement component (4); The transverse moving assembly (2) comprises two symmetrically distributed fixed frames (21) fixedly connected to the workbench (1), two symmetrically distributed first U-shaped seats (22) slidably connected to the fixed frames (21), and transverse tensioning wheels (23) respectively rotatably connected to the inner sides of the two first U-shaped seats (22), so that the conveyor belt (12) passes around the two transverse tensioning wheels (23) and contacts the outer sides of the two transverse tensioning wheels (23).

2. The belt conveyor tensioning device with automatic tensioning function according to claim 1, characterized in that: The first drive assembly (3) comprises a first drive motor (31) fixedly connected to the workbench (1), a drive disk (32) fixedly connected to the output shaft of the first drive motor (31), two strip holes (33) centrally symmetrically provided on the drive disk (32), and drive rods (34) respectively slidably connected to the inner sides of the two strip holes (33), the two drive rods (34) being respectively fixedly connected to the two first U-shaped seats (22).

3. The belt conveyor tensioning device with automatic tensioning function according to claim 2 is characterized in that: The vertical moving assembly (4) comprises two symmetrically distributed L-shaped plates (42) fixedly connected to the workbench (1), a second U-shaped seat (41) arranged between the two L-shaped plates (42), and strip grooves (43) provided on both sides of the second U-shaped seat (41). The L-shaped plates (42) are slidably connected to the inner sides of the strip grooves (43), and a vertical tensioning wheel (44) rotatably connected to the inner side of the second U-shaped seat (41), so that the conveyor belt (12) passes around the vertical tensioning wheel (44) and contacts the outer side thereof.

4. The belt conveyor tensioning device with automatic tensioning function according to claim 3 is characterized in that: The pushing assembly (5) comprises a connecting block (54) fixedly connected to the bottom of the driving disk (32), a pushing rod (53) fixedly connected to one side of the bottom of the connecting block (54), a pushing block (51) fixedly connected to the top of the second U-shaped seat (41), a first inclined surface (52) provided at the top of the pushing block (51), a pushing spring (55) fixedly connected between the L-shaped plate (42) and the strip groove (43) and a bottom end of the pushing rod (53) slidably connected to the first inclined surface (52).

5. The belt conveyor tensioning device with automatic tensioning function according to claim 2, characterized in that: The power transmission component comprises a second drive assembly (6) arranged on one side of the workbench (1), a sliding assembly (7) arranged on the second drive assembly (6), an extrusion assembly (8) arranged on the inner side of the workbench (1), and a limit assembly (9) arranged on the inner side of the extrusion assembly (8); The second drive assembly (6) comprises an active cavity (67) provided on the workbench (1), a fixed disk (62) rotatably connected to the inner side of the active cavity (67), a second drive motor (61) fixedly connected to the workbench (1), an output shaft of the second drive motor (61) extending to the inner side of the active cavity (67) and fixedly connected to the fixed disk (62), a connecting shaft (68) fixedly connected to one end of the active roller (14), an end of the connecting shaft (68) away from the active roller (14) extending to the inner side of the active cavity (67), a conical block (66) limitedly slidably connected to one end of the connecting shaft (68) located inside the active cavity (67), a fixed ring (65) fixedly connected to the conical block (66), a plurality of limit blocks (64) fixedly connected to the fixed ring (65) and distributed in an annular array, and a plurality of limit grooves (63) provided on the fixed disk (62) and distributed in an annular array, the limit blocks (64) being plugged into the inner sides of the limit grooves (63).

6. The belt conveyor tensioning device with automatic tensioning function according to claim 5, characterized in that: The sliding assembly (7) comprises a rotating plate (71) sleeved on the connecting shaft (68), the rotating plate (71) being rotatably connected to the inner wall of the movable chamber (67), a return spring (72) fixedly connected between the rotating plate (71) and the conical block (66), the return spring (72) being sleeved on the connecting shaft (68), two symmetrically distributed sliding grooves (73) provided on the connecting shaft (68), and sliding blocks (74) respectively slidably connected to the inner sides of the two sliding grooves (73), and the two sliding blocks (74) are both fixedly connected to the conical block (66).

7. The belt conveyor tensioning device with automatic tensioning function according to claim 5, characterized in that: The extrusion assembly (8) comprises a plurality of arc-shaped protrusions (82) arranged in an annular array and fixedly connected to the driving disk (32), a sliding cavity (87) provided on the workbench (1), a wedge-shaped block (85) slidably connected to the inner side of the sliding cavity (87), a Z-shaped rod (81) slidably connected to one side of the wedge-shaped block (85), an end of the Z-shaped rod (81) away from the wedge-shaped block (85) being slidably connected to the arc-shaped protrusion (82), a reset ring (83) fixedly connected to the outer side of the Z-shaped rod (81), a compression spring (84) fixedly connected between the reset ring (83) and the workbench (1), the compression spring (84) being sleeved on the outer side of the Z-shaped rod (81), and an extrusion rod (86) fixedly connected to the other side of the wedge-shaped block (85), an end of the extrusion rod (86) away from the wedge-shaped block (85) extending to the inner side of the movable cavity (67) and being slidably connected to the outer side of the conical block (66).

8. The belt conveyor tensioning device with automatic tensioning function according to claim 7, characterized in that: The limiting assembly (9) comprises a T-shaped slide groove (92) formed on the wedge block (85), a T-shaped slider (91) slidably connected to the inner side of the T-shaped slide groove (92), and the T-shaped slider (91) is fixedly connected to the Z-shaped rod (81).

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