Double-roller spiral tensioning device

Abstract

The invention discloses a double-drum spiral tensioning device, which relates to the technical field of belt conveyors and comprises a rack, a support roller, a support rod, a support seat, a connecting seat, a screw rod sleeve and a driving box. Supporting rollers are arranged at the two ends of the interior of a rack, connecting bases are arranged on one sides of the two supporting rollers, lead screw sleeves are arranged on one sides of the connecting bases, adjusting lead screws are arranged in the lead screw sleeves, transmission rods are arranged at one ends of the adjusting lead screws, and the transmission rods are connected with driving rods through worm wheels and worms; the driving rod can be rotated to drive the transmission rod to rotate, so that the two supporting rollers are driven to move at the same time to achieve the effect of adjusting the rollers of the two supporting rollers at the same time, the driving box is arranged below the rack, the movable roller and the driving roller are arranged in the driving box, and the movable roller and the driving roller can drive the belt. Therefore, the two supporting rollers at the two ends of the machine frame are synchronously adjusted, and meanwhile normal operation of the belt is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of belt conveyors, and in particular to a double-drum spiral tensioning device. Background Art

[0002] Belt conveyor is the abbreviation of belt conveyor. It has fixed and mobile types, simple structure and high efficiency. It is a continuous conveying machine with flexible conveyor belt as material carrying and traction component. An endless conveyor belt surrounds the driving roller and the redirecting roller. The upper and lower branches between the two rollers are supported by several rollers. The material is placed on the upper branch, and the friction between the driving roller and the belt is used to drag the conveyor belt and the material to run. It is suitable for conveying bulk materials and finished items in horizontal and inclined directions, and can also be used in assembly lines for certain process operations. It has a simple structure, stable and reliable operation, strong adaptability to materials, large conveying capacity, low power consumption, and wide application. The spiral tensioning device is a commonly used belt conveyor tensioning device, a device used to adjust the tension of the belt conveyor, mainly composed of screw, nut and slide plate. Its working principle is to adjust the screw manually or by a small hydraulic cylinder, and lock and fix it after reaching the required tension. For ordinary belt conveyors, one roller is equipped with a spiral tensioning device, which is more limited.

[0003] For example, a new type of spiral tensioning device for a belt conveyor is disclosed in the publication number CN105621025A. The device comprises a roller (2) connected to a belt (1), a screw (3) driving the roller (2) to move, the screw (3) being sleeved in a worm wheel (4), and an internal thread matching the screw (3) being provided in the turbine (4); the worm wheel (4) is driven by a worm (5), and a driving mechanism is provided outside the worm (5) to drive the worm (5) to operate. The advantages of the present invention are: 1) the present invention utilizes the characteristics of a large transmission ratio, stable transmission, and low noise of the worm gear, so that the present invention can achieve belt tensioning with a relatively small torque; 2) the present invention is equipped with a screw drive, and utilizes the characteristics of accurate screw drive to achieve precise belt tensioning; 3) the present invention adopts a worm gear structure, so that the rotating nut can be arranged at the lower part of the frame, which is convenient for personnel to operate without affecting the layout of the conveyor.

[0004] The above technical solution has the problem of being unable to adjust more than one roller in practical application, and it is difficult to quickly adjust the belt conveyor roller.

[0005] Therefore, it is necessary to invent a double-drum spiral tensioning device to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a double-drum spiral tensioning device to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a double-drum spiral tensioning device, comprising: A frame, wherein a plurality of guide rollers are arranged inside the frame, and belts are arranged outside the guide rollers; Two supporting rollers are provided and are respectively located at two ends of the inner part of the frame and are in contact with the inner wall of the belt; A support rod located at the end of the support roller; A support seat, which is located outside the support rod and is arranged inside the frame; A connecting seat, which is located inside the frame and connected to the supporting seat through connecting bolts; A screw sleeve is located inside the frame, and connecting arms are provided on both sides of the screw sleeve, and the connecting arms are arranged in the middle of the connecting seat; The driving box is arranged at the bottom end of the frame, and a movable roller, a driving roller and a guide roller are arranged inside the driving box.

[0008] Preferably, the adjusting screw rod is arranged inside the screw rod sleeve, one end of the adjusting screw rod is provided with a support plate through a bearing, and the support plate is arranged inside the frame; A transmission rod is arranged inside the frame, and the end of the transmission rod is connected to the adjusting screw rod through a hexagonal groove; The driving rod is arranged inside the frame and has a worm in the middle. The transmission rod has a worm wheel meshing with the worm in the middle.

[0009] Preferably, a slide groove is provided at one end of the outer wall of the frame, and the support rod can slide in the slide groove; A positioning groove is arranged at one end of the outer side wall of the frame, and the connecting seat can slide in the positioning groove.

[0010] Preferably, a guide rod, which is located at one end of the movable roller; A guide groove is provided on the outside of the driving box, and the guide rod can slide inside the guide groove; A movable seat, which is located outside the guide rod and is arranged inside the drive box; The movable plate is located outside the movable seat and has a plurality of tension springs arranged between the movable plate and the movable seat.

[0011] Preferably, a fixed plate, which is located outside the movable plate; A mounting seat, which is located at one end of the fixing plate and connected to the outer side of the driving box by bolts; An adjusting screw is arranged at the middle of the fixed plate through a thread and at the middle of the movable plate through a bearing. The adjusting screw is used to adjust the position of the movable plate.

[0012] Preferably, the sliding rod and the sliding hole, the sliding rod is located on the inner side of the fixed plate, and the sliding hole is arranged on the outer side of the movable plate, and the sliding rod and the sliding hole are used to limit the movable plate to only slide horizontally but not rotate.

[0013] Preferably, the driving motor is located outside the driving box, and the output shaft of the driving motor is connected to one end of the driving roller.

[0014] Preferably, the mounting seat is arranged at the notch of the guide groove.

[0015] Preferably, the belt passes through a driving roller, a movable roller and a guide roller in sequence.

[0016] Preferably, a hand wheel is provided at one end of the driving rod, and the hand wheel is arranged on the outside of the frame.

[0017] Technical effects and advantages of the present invention: 1. The present invention arranges support rollers at both ends of the frame, and one side of the two support rollers is provided with a connecting seat, one side of the connecting seat is provided with a screw sleeve, an adjusting screw is arranged inside the screw sleeve, and one end of the adjusting screw is provided with a transmission rod, and the transmission rod is connected to the driving rod through a worm gear and a worm, and rotating the driving rod can drive the transmission rod to rotate, thereby driving the two support rollers to move at the same time, so as to achieve the effect of adjusting the two support rollers at the same time; 2. The present invention provides a movable seat on one side of the movable roller, a movable plate on one side of the movable seat, a fixed plate on the outer side of the movable plate, the fixed plate is fixed inside the driving box through a mounting seat, a tension spring is provided between the movable plate and the movable seat, the tension spring can apply tension to the movable seat and the movable roller, so as to realize automatic tension control of the belt within a certain range, and adjusting the position of the movable plate can adjust the action range of the tension spring, so as to realize automatic tensioning of the belt; 3. The present invention arranges a driving box under the frame, and movable rollers and driving rollers are arranged inside the driving box. The movable rollers and driving rollers can drive the belt, thereby achieving synchronous adjustment of the two supporting rollers at both ends of the frame without affecting the normal operation of the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention.

[0020] Figure 3 It is a side schematic diagram of the overall structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the interior of the frame structure of the present invention.

[0022] Figure 5 It is a schematic diagram of the movable roller structure of the present invention.

[0023] Figure 6 It is a schematic top view of the movable roller structure of the present invention.

[0024] Figure 7 It is a schematic diagram of the screw sleeve and the adjusting screw structure of the present invention.

[0025] Figure 8 It is a schematic diagram of the transmission rod and the driving rod structure of the present invention.

[0026] Fig. 9 It is a schematic diagram of the support roller structure of the present invention.

[0027] Fig.10 It is a schematic diagram of the frame structure of the present invention.

[0028] In the figure: 1, frame; 2, support roller; 3, drive box; 4, movable roller; 5, drive roller; 6, guide roller; 11, guide roller; 12, belt; 21, support rod; 211, slide groove; 22, support seat; 23, connecting seat; 231, positioning groove; 24, connecting bolt; 25, screw sleeve; 26, connecting arm; 27, adjusting screw; 271, hexagonal groove; 272, support plate; 28, transmission rod; 29, drive rod; 291, worm; 292, worm wheel; 41, guide rod; 411, guide groove; 42, movable seat; 43, movable plate; 431, tension spring; 432, slide rod; 433, slide hole; 44, fixed plate; 441, adjusting screw; 45, mounting seat; 51, drive motor. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 10 As shown, a double-roller spiral tensioning device provided according to the present invention is essentially a device that can adjust the rollers of two support rollers 2 at the same time, by arranging two support rollers 2 at both ends inside the frame 1, and one side of the two support rollers 2 is provided with a connecting seat 23, and one side of the connecting seat 23 is provided with a screw sleeve 25, and an adjusting screw 27 is provided inside the screw sleeve 25, and a transmission rod 28 is provided at one end of the adjusting screw 27, and the transmission rod 28 is connected to the driving rod 29 through a worm gear 292 and a worm 291. Rotating the driving rod 29 can drive the transmission rod 28 to rotate, thereby driving the two support rollers 2 to move at the same time, so as to achieve the effect of adjusting the rollers of the two support rollers 2 at the same time.

[0031] In terms of specific structural installation, the structural body can be constructed according to the inventive concept of this embodiment, and no special limitation is made in this embodiment.

[0032] In this embodiment, a double-drum spiral tensioning device includes: A frame 1, wherein a plurality of guide rollers 11 are provided inside, and a belt 12 is provided outside the guide rollers 11; Two supporting rollers 2 are provided and are respectively located at two ends of the interior of the frame 1 and are in contact with the inner wall of the belt 12; A support rod 21, which is located at the end of the support roller 2; A support seat 22, which is located outside the support rod 21 and is arranged inside the frame 1; The connecting seat 23 is located inside the frame 1 and connected to the supporting seat 22 through the connecting bolts 24. By adjusting the position of the nut on the connecting bolts 24, the position between the connecting seat 23 and the supporting seat 22 can be adjusted separately, so as to achieve the effect of adjusting one supporting roller 2 separately. The screw sleeve 25 is located inside the frame 1. Connecting arms 26 are provided on both sides of the screw sleeve 25, and the connecting arms 26 are provided in the middle of the connecting seat 23; An adjusting screw rod 27 is arranged inside the screw rod sleeve 25, and one end of the adjusting screw rod 27 is provided with a support plate 272 through a bearing, and the support plate 272 is arranged inside the frame 1; The transmission rod 28 is arranged inside the frame 1, and the end of the transmission rod 28 is connected to the adjusting screw rod 27 through the hexagonal groove 271. The plug-in connection between the transmission rod 28 and the adjusting screw rod 27 allows the position between the transmission rod 28 and the adjusting screw rod 27 to be adjusted horizontally, so that the device can be applied to a belt conveyor with a larger span; The driving rod 29 is arranged inside the frame 1 and has a worm 291 in the middle. The transmission rod 28 has a worm wheel 292 in the middle that meshes with the worm 291. A hand wheel is arranged at one end of the driving rod 29, and the hand wheel is arranged outside the frame 1. The setting of the hand wheel facilitates the rotation of the driving rod 29. The worm wheel 292 cooperates with the worm 291 to achieve a transmission effect and lock the position of the transmission rod 28. A slide groove 211, which is provided at one end of the outer wall of the frame 1, and the support rod 21 can slide in the slide groove 211; A positioning groove 231 is provided at one end of the outer wall of the frame 1. The connecting seat 23 can slide in the positioning groove 231. The positioning groove 231 can limit the movement of the connecting seat 23 to ensure that the connecting seat 23, the connecting arm 26 and the screw sleeve 25 do not rotate; A driving box 3 is arranged at the bottom end of the frame 1, and a movable roller 4, a driving roller 5 and a guide roller 6 are arranged inside the driving box 3, and a belt 12 passes through the driving roller 5, the movable roller 4 and the guide roller 6 in sequence; A guide rod 41, which is located at one end of the movable roller 4; A guide groove 411 is provided on the outside of the driving box 3, and the guide rod 41 can slide inside the guide groove 411; A movable seat 42, which is located outside the guide rod 41 and is arranged inside the driving box 3; The movable plate 43 is located outside the movable seat 42 and is provided with a plurality of tension springs 431 between the movable seat 42. The tension springs 431 can apply tension to the movable seat 42, thereby traction of the movable roller 4 can be achieved, and the movable roller 4 can tighten the belt 12 to achieve adaptive adjustment of the tension of the belt 12; A fixed plate 44, which is located outside the movable plate 43; A mounting seat 45 is located at one end of the fixed plate 44 and is connected to the outer side of the driving box 3 by bolts. The mounting seat 45 is arranged at the notch of the guide groove 411. The fixed plate 44 can be removed by removing the mounting seat 45, so that the movable roller 4 can be removed, so that the device can disassemble and maintain the belt 12; An adjusting screw 441, which is disposed at the middle of the fixed plate 44 through a thread and is disposed at the middle of the movable plate 43 through a bearing, and the adjusting screw 441 is used to adjust the position of the movable plate 43; The slide bar 432 and the slide hole 433 are located on the inner side of the fixed plate 44, and the slide hole 433 is located on the outer side of the movable plate 43. The slide bar 432 and the slide hole 433 are used to limit the movable plate 43 to slide horizontally but not to rotate, so as to ensure that the movable plate 43 will not rotate with the adjusting screw 441 when it rotates, thereby facilitating the adjustment of the position of the movable plate 43. The driving motor 51 is located outside the driving box 3 . The output shaft of the driving motor 51 is connected to one end of the driving roller 5 . The driving motor 51 can drive the driving roller 5 .

[0033] When using a double-drum spiral tensioning device of the present embodiment, the positions of the two support rollers 2 can be adjusted by rotating the driving rod 29. The driving rod 29 can drive the transmission rod 28 to rotate through the worm gear 292 and the worm 291, and the transmission rod 28 can drive the adjusting screw rod 27 to rotate. The adjusting screw rod 27 cooperates with the screw rod sleeve 25 to drive the screw rod sleeve 25 to move. The screw rod sleeve 25 drives the connecting seat 23 to move through the connecting arm 26. The connecting seat 23 drives the supporting seat 22 to move through the connecting bolt 24, thereby driving the supporting roller 2 to move, so as to achieve the effect of adjusting the supporting roller 2. During use of the device, the position of the movable plate 43 is adjusted by rotating the adjusting screw 441, and the movable plate 43 can drive the movable seat 42 to move through the tension spring 431, and the movable seat 42 drives the movable roller 4 to move, so that the movable roller 4 pulls the belt 12, so as to achieve the effect of adjusting the tension of the belt 12; During use of the device, the belt 12 passes through the support roller 2, the drive roller 5, the movable roller 4 and the guide roller 6 in sequence to complete the circulation. During the circulation of the belt 12, the drive roller 5 can drive the belt 12 to move, and the movable roller 4 can adjust the tension of the belt 12 to ensure the normal use of the belt 12.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-drum spiral tensioning device, characterized in that: include: A frame (1) having a plurality of guide rollers (11) disposed therein, and a belt (12) disposed on the outer side of the guide rollers (11); Two supporting rollers (2) are provided and are respectively located at two ends of the interior of the frame (1) and are in contact with the inner wall of the belt (12); A support rod (21) located at the end of the support roller (2); A support seat (22) located outside the support rod (21) and arranged inside the frame (1); A connecting seat (23), which is located inside the frame (1) and connected to the supporting seat (22) via connecting bolts (24); A screw sleeve (25) is located inside the frame (1), and connecting arms (26) are provided on both sides of the screw sleeve (25), and the connecting arms (26) are arranged in the middle of the connecting seat (23); A drive box (3) is arranged at the bottom end of the frame (1), and a movable roller (4), a drive roller (5) and a guide roller (6) are arranged inside the drive box (3).

2. A double-drum spiral tensioning device according to claim 1, characterized in that: Also includes: An adjusting screw rod (27) is arranged inside the screw rod sleeve (25); one end of the adjusting screw rod (27) is provided with a support plate (272) via a bearing, and the support plate (272) is arranged inside the frame (1); A transmission rod (28) is arranged inside the frame (1), and an end of the transmission rod (28) is connected to the adjusting screw rod (27) via a hexagonal groove (271); A driving rod (29) is arranged inside the frame (1) and has a worm (291) in the middle. A worm wheel (292) meshing with the worm (291) is provided in the middle of the transmission rod (28).

3. A double-drum spiral tensioning device according to claim 2, characterized in that: Also includes: A slide groove (211) is provided at one end of the outer wall of the frame (1), and the support rod (21) can slide in the slide groove (211); A positioning groove (231) is provided at one end of the outer wall of the frame (1), and the connecting seat (23) can slide in the positioning groove (231).

4. A double-drum spiral tensioning device according to claim 1, characterized in that: Also includes: A guide rod (41) located at one end of the movable roller (4); A guide groove (411) is provided on the outside of the drive box (3), and the guide rod (41) can slide inside the guide groove (411); A movable seat (42) located outside the guide rod (41) and arranged inside the drive box (3); The movable plate (43) is located outside the movable seat (42) and has a plurality of tension springs (431) disposed between the movable plate and the movable seat (42).

5. A double-drum spiral tensioning device according to claim 4, characterized in that: Also includes: A fixed plate (44) located outside the movable plate (43); A mounting seat (45) located at one end of the fixing plate (44) and connected to the outer side of the driving box (3) by bolts; An adjusting screw (441) is arranged at the middle of the fixed plate (44) via a thread, and is arranged at the middle of the movable plate (43) via a bearing. The adjusting screw (441) is used to adjust the position of the movable plate (43).

6. A double-drum spiral tensioning device according to claim 5, characterized in that: Also includes: A sliding rod (432) and a sliding hole (433), wherein the sliding rod (432) is located on the inner side of the fixed plate (44), and the sliding hole (433) is provided on the outer side of the movable plate (43), and the sliding rod (432) and the sliding hole (433) are used to restrict the movable plate (43) to only slide horizontally but not rotate.

7. A double-drum spiral tensioning device according to claim 1, characterized in that: Also includes: A driving motor (51) is located outside the driving box (3), and an output shaft of the driving motor (51) is connected to one end of the driving roller (5).

8. A double-drum spiral tensioning device according to claim 5, characterized in that: Also includes: The mounting seat (45) is arranged at the notch of the guide groove (411).

9. The double-drum spiral tensioning device according to claim 1, characterized in that: Also includes: The belt (12) passes through the driving roller (5), the movable roller (4) and the guide roller (6) in sequence.

10. A double-drum spiral tensioning device according to claim 1, characterized in that: Also includes: A hand wheel is provided at one end of the driving rod (29), and the hand wheel is arranged on the outside of the frame (1).

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