A head tension roller device

Abstract

The utility model relates to a kind of end head tension roller device, comprising: rack;Roller mechanism, it includes: first support, end head roller, first bolt and fixed plate, the first bolt passes through fixed plate and is connected with rack, the first support is set between fixed plate and rack and is movably connected to rack;Adjusting mechanism, it includes: second support, adjusting rod and rotating rod, the second support is fixedly connected to rack.The utility model is simplified by the above setting, maintenance replacement process, improve operating efficiency, when end head roller is dismantled, only first bolt is removed, end head roller and first support can be extracted.

Description

Technical Field

[0001] This utility model relates to the field of tensioning roller technology, and in particular to an end tensioning roller device. Background Technology

[0002] Conveying devices are common equipment in conveying systems. Since the end rollers of conveying devices need to have tension and deviation adjustment functions, it is usually necessary for the two ends of the shaft to extend beyond the roller surface. Holes are drilled on the shafts, adjusting bolts are inserted, and then they are fixed on the tension support. The position of the roller shaft is finely adjusted by adjusting the nuts on the bolts, thereby achieving the tension and deviation adjustment function.

[0003] Traditional end roller assemblies require adjusting bolts at both ends of the shaft, resulting in a relatively long protrusion of the shafts beyond the roller surface. During installation, corresponding openings need to be made in the main beams on both sides to accommodate this, or a separate mounting bracket needs to be designed to install the end rollers and tensioning mechanism before the entire assembly is mounted to the machine body. Both of these methods cause inconvenience in design and manufacturing, have poor versatility, and make replacing the end rollers extremely difficult, requiring the removal of many parts to detach them. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the end roller of the conveying device is extremely troublesome in the later stage, and many parts need to be removed in order to remove the end roller. Thus, an end tensioning roller device is provided.

[0005] To solve the above-mentioned technical problems, this utility model provides an end tensioning roller device, comprising:

[0006] frame;

[0007] A roller mechanism includes: a first support, an end roller, a first bolt, and a fixing plate. The first bolt passes through the fixing plate and is connected to the frame. The first support is disposed between the fixing plate and the frame and is movably connected to the frame. The first support has a groove adapted to the first bolt along the length of the frame. The end roller is rotatably connected to the first support.

[0008] The adjustment mechanism includes a second support, an adjustment rod, and a rotating rod. The second support is fixedly connected to the frame. The adjustment rod is movably arranged along the length of the frame and its end abuts against the first end of the rotating rod. The rotating rod is rotatably connected to the frame and its second end abuts against the first support.

[0009] In one embodiment of the present invention, the first support is provided with a clearance groove, the end face of the clearance groove has an acute angle relative to the vertical plane, and the second end of the rotating rod abuts against the end face of the clearance groove.

[0010] In one embodiment of this utility model, the fixing plate is also connected to the frame by a second bolt and forms a rotating position using the second bolt, and the rotating rod is rotatably connected to the frame through the rotating position.

[0011] In one embodiment of the present invention, the rotating rod includes a first rotating part and a second rotating part connected together. The first rotating part is disposed in the clearance groove and located between the fixed plate and the frame, and the second bolt is disposed in the clearance groove.

[0012] In one embodiment of the present invention, the thickness of the second rotating part is greater than the thickness of the first rotating part, and the end of the adjusting rod abuts against the second rotating part.

[0013] In one embodiment of the present invention, the second support is detachably mounted to the frame by a third bolt. The second support has a threaded hole along the length of the frame. The adjusting rod has an external thread adapted to the threaded hole. The adjusting rod passes through the threaded hole and its end extends to the rotating rod.

[0014] In one embodiment of this utility model, a first support, an end roller, a first bolt, a fixing plate, and an adjustment mechanism are respectively provided on both sides of the frame in the width direction, and the fixing plates on both sides of the frame are connected by connecting plates.

[0015] In one embodiment of this utility model, the adjusting rod is fitted with a nut, and the nut can abut against the second support.

[0016] In one embodiment of this utility model, the number of the second bolts is multiple, and the first support has a first oblong hole. The size of the groove and the oblong hole are both larger than the size of the first bolt.

[0017] In one embodiment of this utility model, the first support is provided with a second waist-shaped hole, and the two ends of the shaft of the end roller are connected to connecting members. The roller body of the end roller is rotatably connected to the shaft of the end roller through a bearing, and the connecting member can move along the length direction of the frame within the second waist-shaped hole.

[0018] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0019] This utility model discloses an end-tensioning roller device that eliminates the need for an excessively long protruding end-roller shaft, simplifying the installation and design process. An adjusting rod drives a rotating rod to rotate, which in turn drives the first support to move along the length of the frame, thereby causing the end-roller to move synchronously to adjust the tension. Since there is no need to install adjusting bolts on the end-roller shaft, the shaft does not need to protrude excessively from the roller surface, effectively avoiding the need for openings in the main beam of the machine body due to a protruding shaft in traditional structures. It also eliminates the need for a dedicated mounting support, significantly simplifying the design and processing steps of the machine body, reducing structural complexity, and simplifying maintenance and replacement procedures, thus improving operational efficiency. When disassembling the end-roller, only the first bolt needs to be removed to pull out the end-roller and the first support. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the tensioning roller device of this utility model;

[0022] Figure 2 This is a partial schematic diagram of the adjustment mechanism of this utility model;

[0023] Figure 3 This is a partial cross-sectional view of the adjustment mechanism of this utility model;

[0024] Figure 4 This is a structural schematic diagram of the connecting plate and the fixing plate of this utility model;

[0025] Figure 5 This is a schematic diagram of the rotating rod and the first support of this utility model.

[0026] Explanation of reference numerals in the accompanying drawings: 1. Frame; 2. First bolt; 3. Second bolt; 4. Third bolt; 5. End roller; 6. Connecting plate; 7. First oblong hole; 8. Second oblong hole; 9. Connecting piece; 10. Slide groove; 11. First support; 12. Second support; 13. Adjusting rod; 14. Nut; 15. Rotating rod; 16. Clearance groove; 17. First rotating part; 18. Second rotating part; 19. Fixing plate. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0028] Example

[0029] Reference Figures 1-5As shown, the present invention provides an end tensioning roller device, comprising:

[0030] Rack 1;

[0031] The roller mechanism includes: a first support 11, an end roller 5, a first bolt 2, and a fixing plate 19. The first bolt 2 passes through the fixing plate 19 and is connected to the frame 1. The first support 11 is disposed between the fixing plate 19 and the frame 1 and is movably connected to the frame 1. The first support 11 has a groove 10 adapted to the first bolt 2 along the length of the frame 1. The end roller 5 is rotatably connected to the first support 11.

[0032] The adjustment mechanism includes a second support 12, an adjustment rod 13, and a rotating rod 15. The second support 12 is fixedly connected to the frame 1. The adjustment rod 13 is movably arranged along the length of the frame 1 and its end abuts against the first end of the rotating rod 15. The rotating rod 15 is rotatably connected to the frame 1 and its second end abuts against the first support 11.

[0033] The present invention discloses an end tensioning roller device, wherein the frame 1 serves as the mounting base for the entire device, providing a stable support platform for all components. The fixed plate 19 is connected to the frame 1 via a first bolt 2, forming a relatively fixed mounting reference. A first support 11 is disposed between the fixed plate 19 and the frame 1, and is movably connected to the frame 1, allowing the first support 11 to move along the length of the frame 1. A sliding groove 10 formed on the first support 11 along the length of the frame 1 is adapted to the first bolt 2. The sliding groove 10 provides guidance for the movement of the first support 11, while the first bolt 2 passes through the sliding groove 10 and the fixed plate 19 and connects to the frame 1, thus restricting the direction of movement of the first support 11 and ensuring its stability during movement. The end roller 5 is rotatably connected to the first support 11, allowing the end roller 5 to rotate freely while moving with the first support 11 to adapt to the material conveying requirements. When disassembling the end roller 5, simply remove the first bolt 2 inside the first oblong hole 7 and loosen the first bolt 2 inside the slide groove 10 to pull out the end roller 5 and the first support 11.

[0034] The adjustment mechanism is used to drive the first support 11 to move, thereby realizing the tension adjustment of the end roller 5. The second support 12 is fixedly connected to the frame 1, providing stable support for the adjustment rod 13; the adjustment rod 13 is movably arranged along the length direction of the frame 1, and its end abuts against the first end of the rotating rod 15. The movement of the adjustment rod 13 can push the rotating rod 15 to move; the rotating rod 15 is rotatably connected to the frame 1, and its second end abuts against the first support 11. When the rotating rod 15 rotates around the frame 1 under the push of the adjustment rod 13, its second end will generate a thrust on the first support 11, thereby balancing the tension of the belt on the end roller 5.

[0035] The working process of the device is as follows: When it is necessary to adjust the tension of the end roller 5, the adjusting rod 13 is operated to move it along the length direction of the frame 1. The end of the adjusting rod 13 pushes the first end of the rotating rod 15, causing the rotating rod 15 to rotate around the rotating connection point of the frame 1. When the rotating rod 15 rotates, its second end moves synchronously and applies a force to the first support 11. Under the action of this force and the guiding action of the slide 10, the first support 11 moves along the length direction of the frame 1. The movement of the first support 11 drives the end roller 5, which is rotatably connected to it, to move synchronously, thereby changing the tension adjustment between the end roller 5 and the conveyor belt.

[0036] Reference Figure 2 , Figure 4 As shown, on the one hand, the fixing plate 19 has a threaded hole adapted to the first bolt 2, thereby forming a threaded self-locking mechanism to prevent the fixing plate 19 from loosening along the width direction of the frame 1. On the other hand, the frame 1 has a first support 11, an end roller 5, a first bolt 2, a fixing plate 19, and an adjustment mechanism respectively arranged on both sides of the width direction. The fixing plates 19 on both sides of the frame 1 are connected by a connecting plate 6. Both the fixing plate 19 and the connecting plate 6 are located on the inner side of the frame 1 on both sides, and the frame 1 limits the fixing plate 19 in the width direction. This improves the rigidity of the entire device and prevents the fixing plate 19 or the frame 1 from deforming due to excessive force during operation. At the same time, the connecting plate 6 can also synchronize the movement of the fixing plates 19 on both sides, ensuring that the first support 11 and the end roller 5 on both sides move synchronously during adjustment, avoiding inconsistent adjustment amounts on both sides.

[0037] Reference Figure 5 As shown, the first support 11 has a clearance groove 16, and the angle between the end face of the clearance groove 16 and the vertical plane is an acute angle. The second end of the rotating rod 15 abuts against the end face of the clearance groove 16. The acute angle between the end face of the clearance groove 16 and the vertical plane allows the force applied by the second end of the rotating rod 15 when it abuts against the end face to be decomposed into an effective component force along the length direction of the frame 1 and a component force perpendicular to that direction. The component force along the length direction of the frame 1 directly drives the first support 11 to move, while the component force in the vertical direction is borne by the connection structure between the first support 11 and the frame 1, thus reducing force loss.

[0038] Reference Figure 2As shown, the fixing plate 19 is also connected to the frame 1 by the second bolt 3, and the second bolt 3 forms a rotating position. The rotating rod 15 is rotatably connected to the frame 1 through the rotating position. The second bolt 3 is located in the middle or near the middle of the rotating rod 15. A clearance fit or a bearing connection can be provided between the rotating rod 15 and the second bolt 3 to reduce frictional resistance during rotation and ensure smooth rotation. When the adjusting rod 13 pushes the first end of the rotating rod 15, the rotating rod 15 rotates around the rotating position formed by the second bolt 3 as the fulcrum. At this time, the second end of the rotating rod 15 will make an arc motion around the fulcrum and apply a thrust to the first support 11.

[0039] Reference Figure 5 As shown, the rotating rod 15 includes a first rotating part 17 and a second rotating part 18 connected together. The first rotating part 17 is disposed in the clearance groove 16 and located between the fixed plate 19 and the frame 1. The second bolt 3 is disposed in the clearance groove 16. This reduces force transmission loss caused by improper spatial layout, and avoids interference between the first rotating part 17 and the fixed plate 19, the frame 1, or the first support 11, ensuring smooth rotation.

[0040] The thickness of the second rotating part 18 is greater than that of the first rotating part 17, and the end of the adjusting rod 13 abuts against the second rotating part 18. The thickness direction of the first rotating part 17 is the width direction of the frame 1. The thicker structure increases the contact area with the adjusting rod 13, reduces the pressure at the contact point, and reduces wear.

[0041] Reference Figure 2 As shown, the second support 12 is detachably mounted to the frame 1 via a third bolt 4. The second support 12 has a threaded hole along the length of the frame 1. The adjusting rod 13 has an external thread adapted to the threaded hole, and the adjusting rod 13 passes through the threaded hole with its end extending to the rotating rod 15. This makes the installation, disassembly, and replacement of the second support 12 more convenient, facilitating later maintenance and repair. When the device malfunctions or requires component replacement, the second support 12 can be removed from the frame 1 simply by removing the third bolt 4, without requiring any destructive operation on the frame 1. Simultaneously, the connection method of the third bolt 4 ensures the connection strength between the second support 12 and the frame 1, ensuring that it will not loosen or shift during operation.

[0042] Reference Figure 3As shown, the second support 12 has a threaded hole along the length of the frame 1, and the adjusting rod 13 has an external thread that fits into the threaded hole. The adjusting rod 13 passes through the threaded hole and extends to the rotating rod 15 at its end. The threaded engagement structure enables precise movement of the adjusting rod 13. By rotating the adjusting rod 13, the meshing action of the thread allows the adjusting rod 13 to move linearly along the length of the frame 1. The distance it moves is directly proportional to the rotation angle, thereby achieving precise pushing of the rotating rod 15. After adjustment, the self-locking property of the thread keeps the adjusting rod 13 in its current position, preventing positional deviation due to vibration or other factors.

[0043] The adjusting rod 13 is fitted with a nut 14, which abuts against the second support 12. During the adjustment of the adjusting rod 13, the nut 14 is in a loose state, with a gap between it and the second support 12, which does not affect the rotation and movement of the adjusting rod 13. When the adjusting rod 13 moves to the target position, the nut 14 is rotated to move it towards the second support 12 until the nut 14 tightly abuts against the second support 12. At this time, the friction between the nut 14 and the second support 12, as well as the friction between the nut 14 and the threads of the adjusting rod 13, work together to prevent the adjusting rod 13 from moving axially. Even if the device is subjected to vibration or other external forces during operation, the adjusting rod 13 can remain in the locked position to ensure that the tension of the end roller 5 remains stable.

[0044] There are multiple second bolts 3. The first support 11 has a first oblong hole 7. The dimensions of the sliding groove 10 and the oblong hole are both larger than the dimensions of the first bolt 2. When the first support 11 moves along the length of the frame 1 under the push of the rotating rod 15, the first bolt 2 slides in the sliding groove 10 and the first oblong hole 7. Since the dimensions of both are larger than the first bolt 2, the first support 11 can move smoothly without jamming. Multiple second bolts 3 jointly bear the force transmitted by the rotating rod 15, ensuring the stability of the rotation position, so that the rotating rod 15 can rotate smoothly and effectively drive the first support 11 to move.

[0045] The first support 11 has a second oblong hole 8. Connecting members 9 are connected to both ends of the shaft of the end roller 5. The roller body of the end roller 5 is rotatably connected to the shaft of the end roller 5 via bearings. The connecting member 9 can move along the length of the frame 1 within the second oblong hole 8. When the first support 11 moves along the length of the frame 1, the shaft of the end roller 5 moves synchronously with the first support 11 within the second oblong hole 8 via the connecting member 9, thereby changing the position of the end roller 5 and achieving tension adjustment. During material conveying, the material contacts the roller body of the end roller 5 and drives the roller body to rotate. Since the roller body is connected to the shaft via bearings, the roller body can rotate freely relative to the shaft, reducing the friction between the material and the roller body and ensuring smooth material conveying. The second oblong hole 8 ensures that the shaft of the end roller 5 is not obstructed by the first support 11 during movement, while also limiting the direction of shaft movement to ensure accurate adjustment.

[0046] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A tensioning roller device at the end, characterized in that, include: frame; A roller mechanism includes: a first support, an end roller, a first bolt, and a fixing plate. The first bolt passes through the fixing plate and is connected to the frame. The first support is disposed between the fixing plate and the frame and is movably connected to the frame. The first support has a groove adapted to the first bolt along the length of the frame. The end roller is rotatably connected to the first support. The adjustment mechanism includes a second support, an adjustment rod, and a rotating rod. The second support is fixedly connected to the frame. The adjustment rod is movably arranged along the length of the frame and its end abuts against the first end of the rotating rod. The rotating rod is rotatably connected to the frame and its second end abuts against the first support.

2. The end tensioning roller device according to claim 1, characterized in that: The first support has a clearance groove, and the angle between the end face of the clearance groove and the vertical plane is an acute angle. The second end of the rotating rod abuts against the end face of the clearance groove.

3. The end tensioning roller device according to claim 1, characterized in that: The fixing plate is also connected to the frame by a second bolt and forms a rotating position using the second bolt. The rotating rod is rotatably connected to the frame through the rotating position.

4. The end tensioning roller device according to claim 3, characterized in that: The rotating rod includes a first rotating part and a second rotating part connected together. The first rotating part is disposed in the clearance groove and located between the fixed plate and the frame. The second bolt is disposed in the clearance groove.

5. The end tensioning roller device according to claim 4, characterized in that: The thickness of the second rotating part is greater than the thickness of the first rotating part, and the end of the adjusting rod abuts against the second rotating part.

6. The end tensioning roller device according to claim 1, characterized in that: The second support is detachably mounted to the frame by a third bolt. The second support has a threaded hole along the length of the frame. The adjusting rod has an external thread that fits the threaded hole. The adjusting rod passes through the threaded hole and its end extends to the rotating rod.

7. The end tensioning roller device according to claim 1, characterized in that: The frame is provided with a first support, an end roller, a first bolt, a fixing plate, and an adjustment mechanism on both sides in the width direction. The fixing plates on both sides of the frame are connected by connecting plates.

8. The end tensioning roller device according to claim 1, characterized in that: The adjusting rod is fitted with a nut, which can abut against the second support.

9. The end tensioning roller device according to claim 4, characterized in that: The number of the second bolts is multiple, and the first support has a first oblong hole. The size of the groove and the oblong hole are both larger than the size of the first bolt.

10. The end tensioning roller device according to claim 1, characterized in that: The first support has a second oblong hole, and the two ends of the shaft of the end roller are connected to the connecting parts. The roller body of the end roller is rotatably connected to the shaft of the end roller through the bearing. The connecting parts can move along the length of the frame within the second oblong hole.

Images