Belt conveying device capable of improving conveying load

Abstract

The utility model provides a belt conveying device for improving conveying load, which comprises a base, two driven rollers, a driving motor, a driving roller, a redirection roller and a belt, the driven rollers, the driving motor, the driving roller and the redirection roller are all positioned in the base and connected with the base, the two driven rollers are positioned at two ends of the top of the base, and the belt is arranged on the belt. The at least two driving rollers are distributed on the same side of the driving motor, the driving roller close to the driving motor is connected with the driving motor, the adjacent driving rollers are in transmission connection, the redirection rollers comprise the first redirection roller and the second redirection roller, and the first redirection roller and the second redirection roller are both located above the driving rollers. And the belt is wound on the driven roller, the first redirection roller, the second redirection roller and the driving roller, so that the technical problems that the belt traction force of a belt conveying device in the prior art is weak, the conveying efficiency of objects cannot be kept when heavy objects are conveyed, and the conveying load of the belt conveying device is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a belt conveying device capable of increasing conveying load. Background Art

[0002] A belt conveyor is a type of transport equipment that transports goods on a belt forward through the circular rotation of the conveyor belt. Belt conveyors have the advantages of long conveying distances, simple structure, and easy maintenance. They are an indispensable economical logistics conveying equipment for rhythmic assembly lines and are widely used in various fields of our society.

[0003] However, the belt traction force of the belt conveyor device in the prior art is relatively weak, and when conveying heavy objects, the conveying efficiency of the objects cannot be maintained, resulting in a low conveying load of the belt conveyor device. Utility Model Content

[0004] In order to solve the technical problem in the prior art that the belt traction force of the belt conveyor device is weak, the conveying efficiency of the objects cannot be maintained when conveying heavy objects, resulting in a low conveying load of the belt conveyor device, the present application provides a belt conveyor device with increased conveying load, so as to achieve the technical effect of increasing the traction force of the belt conveyor device and thereby increasing the conveying load of the belt conveyor device.

[0005] In order to achieve the above technical effects, this application adopts the following technical solutions:

[0006] A belt conveyor device for increasing conveying load comprises a base, a driven roller, a driving motor, a driving roller, a redirecting roller and a belt;

[0007] The driving motor, the driven roller, the active roller and the redirecting roller are all arranged in the base perpendicular to the object conveying direction and are all connected to the base;

[0008] There are two driven rollers, and the two driven rollers are connected to two opposite ends of the base along the object conveying direction;

[0009] There are at least two active rollers, and at least two of the active rollers are spaced apart and distributed on one side of the drive motor close to one of the driven rollers. The active roller close to the drive motor is in transmission connection with the drive motor, and two adjacent active rollers are in transmission connection with each other.

[0010] The redirecting roller includes a first redirecting roller and at least one second redirecting roller, wherein the first redirecting roller is arranged at an end of the active roller close to the driving motor and away from the ground, and the second redirecting roller is arranged at an end of the first redirecting roller away from the driving motor;

[0011] The horizontal height of the driven roller is higher than the horizontal height of the redirecting roller;

[0012] The belt is wound around the driven roller, the first redirecting roller, the second redirecting roller and the active roller.

[0013] Preferably, it also includes a tensioning and adjusting roller;

[0014] The tensioning roller is arranged in the base perpendicular to the object conveying direction and is slidably connected to the base. The tensioning roller is located at the end of the active roller away from the driving motor. The height of the tensioning roller is higher than the height of the active roller and lower than the height of the driven roller.

[0015] The belt is wound around the driven roller, the first redirecting roller, the second redirecting roller, the active roller and the tensioning and adjusting roller.

[0016] Preferably, the base comprises two mounting side panels arranged opposite to each other, a support frame and a mounting bottom plate;

[0017] The support frame and the mounting base are both located between the two opposite mounting side plates, and both ends thereof are fixedly connected to the two mounting side plates respectively;

[0018] The support frame is located at an end of the mounting side plate away from the ground, and the mounting base plate is located at an end of the mounting side plate close to the ground;

[0019] The driving motor is fixedly mounted on the mounting base;

[0020] The two ends of the driven roller, the active roller, the redirecting roller and the tensioning adjustment roller are respectively connected to the two mounting side plates.

[0021] Preferably, each of the mounting side panels is provided with a first adjusting member and a second adjusting member;

[0022] The first adjustment member includes a first adjustment slot and a first adjustment rod, the first adjustment slot being formed on the mounting side plate along the object conveying direction, the first adjustment rod being connected to the mounting side plate via a first fixing ear, the first adjustment rod being located on a side of the first adjustment slot away from the other mounting side plate, one end of the tensioning adjustment roller passing through the first adjustment slot and being slidably connected to the first adjustment slot and the first adjustment rod;

[0023] The second adjusting member includes a second adjusting rod, a second adjusting slot and at least one third adjusting slot, the second adjusting slot and the third adjusting slot are arranged on the mounting side plate at intervals along the object conveying direction, the second adjusting rod is connected to the mounting side plate through a second fixing ear, the second adjusting rod is located on the side of the second adjusting slot and the third adjusting slot away from the other mounting side plate, one end of the first redirecting roller passes through the second adjusting slot and is slidably connected to the second adjusting slot and the second adjusting rod, and one end of the second redirecting roller passes through the third adjusting slot and is slidably connected to the third adjusting slot and the second adjusting rod.

[0024] Preferably, the mounting side plate is further provided with a first through hole, a second through hole and a third through hole;

[0025] The first through hole is connected to one end of the first adjustment slot, and the diameter of the first through hole is larger than the diameter of the tension adjustment roller;

[0026] The second through hole is connected to one end of the second adjustment slot, and the diameter of the second through hole is larger than the diameter of the first redirecting roller;

[0027] The third through hole is communicated with one end of the third adjusting through groove, and the diameter of the third through hole is larger than the diameter of the second redirecting roller.

[0028] Preferably, both ends of the tensioning roller, both ends of the first redirecting roller, and both ends of the second redirecting roller are provided with rectangular cross-sections;

[0029] The tensioning adjustment roller is slidably connected to the first adjustment slot via the rectangular cross section;

[0030] The first redirecting roller is slidably connected to the second adjusting groove through the rectangular section;

[0031] The second redirecting roller is slidably connected to the third adjusting slot through the rectangular section.

[0032] Preferably, both ends of the active roller are connected to the two mounting side plates via connecting pieces, and the connecting pieces include mounting through holes, fixing plates and bearing seats;

[0033] The mounting through hole is opened on the mounting side plate, and the aperture of the mounting through hole is larger than the diameter of the active roller;

[0034] The fixing plate is connected to the mounting side plate and is used to close the mounting through hole. The fixing plate is provided with a through hole coaxial with the mounting through hole.

[0035] The bearing seat is fixedly mounted on a side of the fixing plate away from the mounting through hole, and the bearing of the bearing seat is coaxially arranged with the mounting through hole;

[0036] One end of the active roller passes through the mounting through hole, the through hole and the bearing seat in sequence, and is rotatably connected to the bearing seat.

[0037] Preferably, the driving motor is connected to the active roller via a transmission assembly, and the transmission assembly includes a driving gear, a driven gear and a transmission chain;

[0038] There are at least two driving gears, and the driving gears are connected to the output end of the driving motor;

[0039] The number of the driven gears is the same as the number of the driving gears, and the driven gears are connected to the driving roller;

[0040] The number of the transmission chains is consistent with the number of the driving gears, and each transmission chain is simultaneously engaged with a driving gear and a corresponding driven gear.

[0041] Preferably, both ends of the driven roller are sleeved with anti-stuck pieces, and the anti-stuck pieces are located between the belt and the base.

[0042] Preferably, it further comprises at least one supporting roller;

[0043] The supporting roller is arranged between the two driven rollers perpendicular to the object conveying direction and is connected to the base;

[0044] One end of the supporting roller away from the ground is flush with the other end of the driven roller away from the ground, and the belt is wound around the driven roller, the supporting roller, the first redirecting roller, the second redirecting roller and the active roller.

[0045] Compared with the prior art, this application has the following beneficial effects:

[0046] 1. A driving motor, two driven rollers, a first redirecting roller, a second redirecting roller and at least two active rollers are provided, the two driven rollers are respectively placed at opposite ends of a base, the active roller close to the driving motor is connected to the driving motor, and adjacent active rollers are transmission-connected, the first redirecting roller is provided at the end of the active roller close to the driving motor away from the ground, the second redirecting roller is provided at the end of the first redirecting roller away from the driving motor, the horizontal height of the driven roller is higher than the horizontal height of the first redirecting roller and the second redirecting roller, the belt is wound around the driven roller, the first redirecting roller, the second redirecting roller and the active roller, and the traction force of the belt conveyor device is increased by increasing the belt wrap angle, thereby solving the technical problem in the prior art that the belt traction force of the belt conveyor device is poor, the conveying efficiency of the object cannot be maintained when conveying heavy objects, and the conveying load of the belt conveyor device is low.

[0047] 2. By setting a tensioning adjustment roller, which is slidably connected to the base, the sliding tensioning adjustment roller can be used to adjust the tension between the belt and each roller without significantly increasing the running resistance of the belt. At the same time, the belt wrap angle is increased, further improving the traction of the belt conveyor device.

[0048] 3. By setting the first adjustment structure and the second adjustment structure, the parallelism of the first redirecting roller, the second redirecting roller and the tensioning adjustment roller can be adjusted to prevent the belt from deviating.

[0049] 4. By setting the first through hole, the second through hole, the third through hole and the installation through hole, and the aperture of the first through hole is larger than the diameter of the tensioning roller, the aperture of the second through hole is larger than the diameter of the first redirecting roller, the aperture of the third through hole is larger than the diameter of the second redirecting roller, and the aperture of the installation through hole is larger than the diameter of the active roller, it is convenient to disassemble and install the tensioning roller, the first redirecting roller, the second redirecting roller and the active roller.

[0050] 5. By providing rectangular cross-sections at both ends of the tensioning adjustment roller, both ends of the first redirecting roller and both ends of the second redirecting roller, the tensioning adjustment roller, the first redirecting roller and the second redirecting roller are in surface contact with the first adjustment slot, the second adjustment slot and the third adjustment slot respectively instead of line contact, thereby increasing friction and preventing the tensioning adjustment roller, the first redirecting roller and the second redirecting roller from moving during the operation of the belt conveyor device.

[0051] 6. The belt traction force of the belt conveyor device is further improved by arranging a driving motor and a driving roller to be connected through at least two driving gears, a driven gear and a transmission chain.

[0052] 7. Anti-stuck parts are set to prevent the belt from getting entangled with the base when it deviates.

[0053] 8. By setting at least one supporting roller, the belt can be effectively supported while avoiding direct surface contact between the belt and the base to increase the friction of the belt operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. The drawings are not intended to be drawn to scale, and for the sake of clarity, not every component is labeled in each figure. The drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive effort.

[0055] in:

[0056] Figure 1 This is a structural diagram of an embodiment of the present application.

[0057] Figure 2 This is a top view of the belt removal device according to an embodiment of the present application.

[0058] Figure 3 This is a side view of the embodiment of the present application excluding the installation side panels.

[0059] Figure 4 This is a structural schematic diagram of the installation side panel, the first adjustment structure and the second adjustment structure of an embodiment of the present application.

[0060] Figure 5 for Figure 1 Enlarged schematic diagram of part A.

[0061] 1-driven roller, 2-drive motor, 3-active roller, 4-belt, 5-mounting side plate, 6-support frame, 7-first redirecting roller, 8-second redirecting roller, 9-tensioning adjustment roller, 10-first adjusting slot, 11-first adjusting rod, 12-first fixing ear, 13-second adjusting rod, 14-second adjusting slot, 15-third adjusting slot, 16-second fixing ear, 17-first through hole, 18-second through hole, 19-third through hole, 20-rectangular section, 21-mounting through hole, 22-fixing plate, 23-bearing seat, 24-driving gear, 25-driven gear, 26-transmission chain, 27-anti-stuck component, 28-mounting base plate, 29-supporting roller. DETAILED DESCRIPTION

[0062] The embodiment of the present application provides a belt conveyor device with improved conveying load, so as to solve the technical problem in the prior art that the belt conveyor device has a low conveying load because the belt traction force is weak and the conveying efficiency of the heavy objects cannot be maintained when conveying heavy objects.

[0063] In view of this, the embodiment of the present application provides a belt conveyor device that increases the conveying load. Figures 1 to 5 As shown, a belt conveyor device for increasing conveying load is used to convey objects with a mass of 60-80 kg, including a base, a driven roller 1, a drive motor 2, an active roller 3, a redirecting roller, a belt 4, a tensioning adjustment roller 9 and an anti-stuck component 27.

[0064] The driving motor 2, the driven roller 1, the active roller 3, the redirecting roller and the tensioning adjustment roller 9 are all arranged in the base perpendicular to the object conveying direction and are all connected to the base. There are two driven rollers 1, and the two driven rollers 1 are respectively connected to the opposite ends of the base along the object conveying direction. There are at least two active rollers 3, and at least two active rollers 3 are spaced apart and distributed on the side of the driving motor 2 close to one of the driven rollers 1. The active roller 3 close to the driving motor 2 is transmission-connected to the driving motor 2, and the adjacent two active rollers 3 are transmission-connected. The redirecting roller includes a first redirecting roller 7 and at least one second redirecting roller 8. The first redirecting roller 7 is arranged close to the The active roller 3 of the driving motor 2 is at one end away from the ground, the second redirecting roller 8 is arranged at the end of the first redirecting roller 7 away from the driving motor 2, the horizontal height of the driven roller 1 is higher than the horizontal height of the redirecting roller, the tensioning adjustment roller 9 is located at the end of the active roller 3 away from the driving motor 2, the horizontal height of the tensioning adjustment roller 9 is higher than the horizontal height of the active roller 3 and lower than the horizontal height of the driven roller 1, the belt 4 is wound around the driven roller 1, the first redirecting roller 7, the second redirecting roller 8, the tensioning adjustment roller 9 and the active roller 3, and the anti-stuck component 27 is provided at both ends of the driven roller 1, and the anti-stuck component 27 is located between the belt 4 and the base.

[0065] Specifically, the base includes two mounting side panels 5, a support frame 6 and a mounting bottom plate 28 that are arranged opposite to each other. The support frame 6 and the mounting bottom plate 28 are both located between the two mounting side panels 5 that are arranged opposite to each other, and their respective ends are fixedly connected to the two mounting side panels 5. The support frame 6 is located at the end of the mounting side panel 5 away from the ground, and the mounting bottom plate 28 is located at the end of the mounting side panel 5 close to the ground. The drive motor 2 is fixedly mounted on the mounting bottom plate 28. The mounting bottom plate 28 is used to provide a fixed reference for the drive motor 2 to increase the stability of the drive motor 2 during operation. The output end of the drive motor 2 is located on the side of one of the mounting side panels 5 connected to the drive motor 2 away from the other mounting side panel 5. , the two ends of the two driven rollers 1 are respectively connected to the two mounting side plates 5, the two driven rollers 1 are both located at the end of the mounting side plate 5 away from the ground, and are respectively located at the opposite ends of the mounting side plates 5 along the object conveying direction, the two driven rollers 1 are located on the same horizontal plane, at least the two ends of the active rollers 3 are respectively connected to the two mounting side plates 5, and are located at the end of the support frame 6 close to the ground, the first redirecting roller 7 and the second redirecting roller 8 are respectively connected to the two mounting side plates 5 at both ends, the two ends of the tensioning adjustment roller 9 are respectively connected to the two mounting side plates 5, the anti-stuck member 27 is located between the belt 4 and the mounting side plates 5, in this embodiment, the number of the active rollers 3 is two.

[0066] Preferably, in order to facilitate the installation and disassembly of the active roller 3, both ends of the active roller 3 are connected to the two mounting side plates 5 by connecting pieces, and the connecting pieces include a mounting through hole 21, a fixing plate 22 and a bearing seat 23. The mounting through hole 21 is opened on the mounting side plate 5, and the aperture of the mounting through hole 21 is larger than the diameter of the active roller 3. The fixing plate 22 is connected to the mounting side plate 5 for closing the mounting through hole. A through hole coaxial with the mounting through hole 21 is provided on the fixing plate 22. The bearing seat 23 is fixedly installed on the side of the fixing plate 22 away from the mounting through hole 21. The bearing of the bearing seat 23 is coaxially arranged with the mounting through hole 21. One end of the active roller 3 passes through the mounting through hole 21, the through hole and the bearing seat 23 in sequence, and is rotatably connected to the bearing seat 23.

[0067] Preferably, in order to further improve the traction force of the belt conveyor, the drive motor 2 is connected to the active roller 3 through a transmission assembly, and the transmission assembly includes a driving gear 24, a driven gear 25 and a transmission chain 26. The number of the driving gears 24 is at least two. Specifically, in this embodiment, the number of the driving gears 24 is two, and the driving gears 24 are connected to the output end of the drive motor 2. The number of the driven gears 25 is consistent with the number of the driving gears 24. The driven gears 25 are connected to the active roller 3, and the number of the transmission chains 26 is consistent with the number of the driving gears. Each of the transmission chains 26 is simultaneously engaged with one of the driving gears 24 and a corresponding driven gear 25, and the drive motor 2 drives the active roller 3 to rotate through the two transmission chains 26.

[0068] In some embodiments, each of the mounting side panels 5 is provided with a first adjusting member and a second adjusting member, the first adjusting member including a first adjusting slot 10 and a first adjusting rod 11, the first adjusting slot 10 being opened on the mounting side panel 5 along the conveying direction of the object, both ends of the first adjusting rod 11 being connected to the mounting side panel 5 through a first fixing ear 12, the first adjusting rod 11 being located on the side of the first adjusting slot 10 away from the other mounting side panel 5, one end of the tensioning adjusting roller 9 passing through the first adjusting slot 10 and being slidably connected to the first adjusting slot 10 and the first adjusting rod 11, the second adjusting member including a second adjusting rod 13, a second adjusting slot 14 and at least one third adjusting slot 15, the second adjusting slot 14 and the The third adjusting slot 15 is arranged at intervals on the mounting side plate 5 along the conveying direction of the object, and the second adjusting rod 13 is connected to the mounting side plate 5 through a second fixing ear 16. Specifically, the second adjusting rod 13 is fixed to the mounting side plate 5 through a second fixing ear 16 at one end and the middle close to the third adjusting slot 15. The second adjusting rod 13 is located on the side of the second adjusting slot 14 and the third adjusting slot 15 away from the other mounting side plate 5. One end of the first redirecting roller 7 passes through the second adjusting slot 14 and is slidably connected to the second adjusting slot 14 and the second adjusting rod 13. One end of the second redirecting roller 8 passes through the third adjusting slot 15 and is slidably connected to the third adjusting slot 15 and the second adjusting rod 13.

[0069] Among them, specifically Figure 4As shown, the second adjustment slot 14, the third adjustment slot 15 and the first adjustment slot 10 are located in the same horizontal plane and are arranged in sequence. The first adjustment member and the second adjustment member can be used to adjust the parallelism of the first redirecting roller, the second redirecting roller and the tensioning adjustment roller to prevent the belt from running off. Preferably, the mounting side plate 5 is further provided with a first through hole 17, a second through hole 18 and a third through hole 19. The first through hole 17 is connected to one end of the first adjustment slot 10, and the aperture of the first through hole 17 is larger than the diameter of the tensioning adjustment roller 9. The second through hole 18 is connected to one end of the second adjustment slot 14, and the second through hole 18 is connected to one end of the second adjustment slot 14. The aperture is larger than the diameter of the first redirecting roller 7, the third through hole 19 is connected to one end of the third adjustment slot 15, the aperture of the third through hole 19 is larger than the diameter of the second redirecting roller 8, and the first through hole 17, the second through hole 18 and the third through hole 19 are provided to facilitate the disassembly and installation of the tensioning adjustment roller 9, the first redirecting roller 7 and the second redirecting roller 8. Both ends of the tensioning adjustment roller 9, the first redirecting roller 7 and the second redirecting roller 8 are provided with rectangular cross-sections, and the rectangular cross-section of the tensioning adjustment roller 9 is formed by cutting along the axial direction from the end faces (non-diameter) of the tensioning adjustment roller 9, as shown in FIG. Figure 5 As shown, each end of the tensioning adjustment roller 9 has two rectangular cross-sections, and the tensioning adjustment roller 9 is slidingly connected to the first adjustment slot 10 through the rectangular cross-sections. The rectangular cross-section of the first redirecting roller 7 is formed by axially cutting into the end faces (non-diameter) of the first redirecting roller 7. Each end of the first redirecting roller 7 has two rectangular cross-sections, and the first redirecting roller 7 is slidingly connected to the second adjustment slot 14 through the rectangular cross-sections. The rectangular cross-section of the second redirecting roller 8 is formed by axially cutting into the end faces (non-diameter) of the second redirecting roller 8. Each end of the second redirecting roller 8 has two rectangular cross-sections, and the second redirecting roller 8 is slidingly connected to the third adjustment slot 15 through the rectangular cross-sections.

[0070] In some embodiments, at least one supporting roller 29 is further included. The supporting roller 29 is arranged between the two driven rollers 1 perpendicular to the object conveying direction and is connected to the base. The end of the supporting roller 29 away from the ground is flush with the end of the driven roller 1 away from the ground. The belt 4 is wound around the driven roller 1, the supporting roller 29, the first redirecting roller 7, the second redirecting roller 8 and the active roller 3. Specifically, the two ends of the supporting roller 29 are respectively connected to the two mounting side plates 5. By setting at least one supporting roller 29, the belt 4 is effectively supported while avoiding direct surface contact between the belt 4 and the base to increase the friction of the belt 4 during operation.

[0071] In summary, the embodiment of the present application provides a belt conveyor device with improved conveying load, by providing a driving motor, two driven rollers, a first redirecting roller, a second redirecting roller and at least two active rollers, the two driven rollers are respectively placed at opposite ends of a base, the active roller close to the driving motor is connected to the driving motor, and adjacent active rollers are connected by transmission, the first redirecting roller is arranged at the end of the active roller close to the driving motor away from the ground, the second redirecting roller is arranged at the end of the first redirecting roller away from the driving motor, the horizontal height of the driven roller is higher than the horizontal height of the first redirecting roller and the second redirecting roller, the belt is wound around the driven roller, the first redirecting roller, the second redirecting roller and the active roller, and the traction force of the belt conveyor device is increased by increasing the belt wrap angle, thereby solving the technical problem in the prior art that the belt traction force of the belt conveyor device is poor, the conveying efficiency of the object cannot be maintained when conveying heavy objects, and the conveying load of the belt conveyor device is low.

[0072] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0073] The above is a detailed introduction to a belt conveyor device for increasing the conveying load provided in an embodiment of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A belt conveyor device for increasing conveying load, characterized in that: It includes a base, a driven roller, a driving motor, a driving roller, a redirecting roller and a belt; The driving motor, the driven roller, the active roller and the redirecting roller are all arranged in the base perpendicular to the object conveying direction and are all connected to the base; There are two driven rollers, and the two driven rollers are connected to two opposite ends of the base respectively along the object conveying direction; There are at least two active rollers, at least two of which are spaced apart and distributed on one side of the drive motor close to one of the driven rollers, the active roller close to the drive motor is transmission-connected to the drive motor, and two adjacent active rollers are transmission-connected to each other; The redirecting roller comprises a first redirecting roller and at least one second redirecting roller, wherein the first redirecting roller is arranged at an end of the active roller close to the driving motor and away from the ground, and the second redirecting roller is arranged at an end of the first redirecting roller away from the driving motor; The horizontal height of the driven roller is higher than the horizontal height of the redirecting roller; The belt is wound around the driven roller, the first redirecting roller, the second redirecting roller and the active roller.

2. A belt conveyor device for increasing conveying load as claimed in claim 1, characterized in that: Also includes a tensioning adjustment roller; The tensioning roller is arranged in the base perpendicular to the object conveying direction and is slidably connected to the base. The tensioning roller is located at the end of the active roller away from the driving motor. The horizontal height of the tensioning roller is higher than the horizontal height of the active roller and lower than the horizontal height of the driven roller. The belt is wound around the driven roller, the first redirecting roller, the second redirecting roller, the active roller and the tensioning and adjusting roller.

3. A belt conveyor device for increasing conveying load as claimed in claim 2, characterized in that: The base comprises two mounting side plates arranged opposite to each other, a supporting frame and a mounting bottom plate; The support frame and the mounting base plate are both located between the two opposite mounting side plates, and both ends thereof are respectively fixedly connected to the two mounting side plates; The support frame is located at an end of the mounting side plate away from the ground, and the mounting bottom plate is located at an end of the mounting side plate close to the ground; The driving motor is fixedly mounted on the mounting base plate; The two ends of the driven roller, the active roller, the redirecting roller and the tensioning and adjusting roller are respectively connected to the two mounting side plates.

4. A belt conveyor device for increasing conveying load as claimed in claim 3, characterized in that: Each of the mounting side plates is provided with a first adjusting member and a second adjusting member; The first adjusting member comprises a first adjusting slot and a first adjusting rod, the first adjusting slot being opened on the mounting side plate along the object conveying direction, the first adjusting rod being connected to the mounting side plate via a first fixing ear, the first adjusting rod being located on a side of the first adjusting slot away from the other mounting side plate, one end of the tensioning adjusting roller passing through the first adjusting slot and being slidably connected to the first adjusting slot and the first adjusting rod; The second adjusting member includes a second adjusting rod, a second adjusting slot and at least one third adjusting slot, the second adjusting slot and the third adjusting slot are arranged on the mounting side plate at intervals along the object conveying direction, the second adjusting rod is connected to the mounting side plate through a second fixing ear, the second adjusting rod is located on the side of the second adjusting slot and the third adjusting slot away from the other mounting side plate, one end of the first redirecting roller passes through the second adjusting slot and is slidably connected to the second adjusting slot and the second adjusting rod, and one end of the second redirecting roller passes through the third adjusting slot and is slidably connected to the third adjusting slot and the second adjusting rod.

5. A belt conveyor device for increasing conveying load as claimed in claim 4, characterized in that: The mounting side plate is also provided with a first through hole, a second through hole and a third through hole; The first through hole is connected to one end of the first adjustment slot, and the diameter of the first through hole is larger than the diameter of the tension adjustment roller; The second through hole is connected to one end of the second adjusting through groove, and the diameter of the second through hole is larger than the diameter of the first redirecting roller; The third through hole is communicated with one end of the third adjusting through groove, and the diameter of the third through hole is larger than the diameter of the second redirecting roller.

6. A belt conveyor device for increasing conveying load as claimed in claim 4, characterized in that: Both ends of the tensioning roller, both ends of the first redirecting roller, and both ends of the second redirecting roller are provided with rectangular sections; The tension adjustment roller is slidably connected to the first adjustment slot via the rectangular section; The first redirecting roller is slidably connected to the second adjusting slot via the rectangular section; The second redirecting roller is slidably connected to the third adjusting through groove through the rectangular section.

7. A belt conveyor device for increasing conveying load as claimed in claim 3, characterized in that: Both ends of the active roller are connected to the two mounting side plates via connecting pieces, and the connecting pieces include mounting through holes, fixing plates and bearing seats; The mounting through hole is opened on the mounting side plate, and the hole diameter of the mounting through hole is larger than the diameter of the active roller; The fixing plate is connected to the mounting side plate and is used to close the mounting through hole. The fixing plate is provided with a through hole coaxial with the mounting through hole. The bearing seat is fixedly mounted on a side of the fixing plate away from the mounting through hole, and the bearing of the bearing seat is coaxially arranged with the mounting through hole; One end of the active roller passes through the mounting through hole, the through hole and the bearing seat in sequence, and is rotatably connected to the bearing seat.

8. A belt conveyor device for increasing conveying load as claimed in claim 1, characterized in that: The driving motor is connected to the driving roller through a transmission assembly, and the transmission assembly includes a driving gear, a driven gear and a transmission chain; The number of the driving gears is at least two, and the driving gears are connected to the output end of the driving motor; The number of the driven gears is consistent with the number of the driving gears, and the driven gears are connected to the driving roller; The number of the transmission chains is consistent with the number of the driving gears, and each of the transmission chains is meshed with a driving gear and a corresponding driven gear at the same time.

9. A belt conveyor device for increasing conveying load as claimed in claim 1, characterized in that: Anti-stuck pieces are sleeved on both ends of the driven roller, and the anti-stuck pieces are located between the belt and the base.

10. A belt conveyor device for increasing conveying load as claimed in claim 1, characterized in that: Also includes at least one support roller; The supporting roller is disposed between the two driven rollers perpendicular to the object conveying direction and is connected to the base; One end of the supporting roller away from the ground is flush with one end of the driven roller away from the ground, and the belt is wound around the driven roller, the supporting roller, the first redirecting roller, the second redirecting roller and the driving roller.

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