A passive track-correcting idler roller device

Abstract

This utility model relates to the field of belt-aligning idler technology, specifically to a passive belt-aligning idler device. A straight roller is rotatably connected to both sides of the inner side of a support frame via a rotating shaft. Side plates are fixedly connected to both sides of the support frame, and a tapered roller is rotatably connected to the top of each side plate. Inner plates are slidably connected to both ends of the inner side of the support frame, and mounting plates are fixedly connected to opposite sides of the two inner plates. Adjusting rods are threadedly connected to one side of each side plate. Fixed plates and limiting rods are provided on both sides of the support frame to ensure guiding accuracy and stability during the sliding process, avoiding installation errors caused by sliding deviations. The inner plates are slidably connected inside the support frame and connected to the conveyor structure via mounting plates. This achieves multi-level adjustment of the conveyor belt base, further enhancing the device's adaptability to different installation environments and significantly improving installation efficiency and adjustment accuracy.

Description

Technical Field

[0001] This utility model relates to the field of correction roller technology, and in particular to a passive correction roller device. Background Technology

[0002] Passive self-aligning idlers are key devices widely used in belt conveyor systems. They are primarily used to automatically correct belt misalignment during operation, ensuring the conveyor belt runs smoothly along a predetermined track. This device requires no external power drive, relying on the friction between the conveyor belt and the idler, along with its structural design, to achieve automatic self-alignment. It offers advantages such as energy saving, environmental friendliness, compact structure, and rapid response, making it valuable in industries such as mining, ports, power plants, and logistics.

[0003] Utility model patent CN205366947U discloses a passive self-aligning idler roller device, including a bracket, an idler roller, and a support. The support is installed on the bracket, and the idler roller is installed in the bearing of the support. The idler roller includes a pin, an inner seal, a first sealing assembly, a bearing seat, a second sealing assembly, a sealing cover, a shaft, a first seamless tube, a second seamless tube, a rubber sleeve surface, and a bearing. The second seamless tube is installed on the rubber sleeve surface, and the first seamless tube is installed on the shaft and fixed with the pin before being inserted into the second seamless tube. The bearing seat is installed on the first seamless tube and inside the end of the second seamless tube. The inner seal, bearing, second sealing assembly, first sealing assembly, and sealing cover are installed in sequence inside the bearing seat. This device has advantages such as not damaging the conveyor belt, bidirectional self-aligning capability, compact structure, reliable performance, convenient installation and use, high sensitivity, long service life, maintenance-free operation, and reduced operating costs. However, in practical applications, this device still lacks an effective means for quickly and accurately adjusting the installation angle and position of the idler roller, and cannot fundamentally solve the problem of low efficiency caused by inconvenient adjustment.

[0004] Specifically, existing passive alignment roller devices generally suffer from inconvenient adjustment during actual installation. Since the overall installation angle, position, and alignment accuracy of the rollers directly affect their alignment performance, and most existing structures use fixed or bolted connections, repeated adjustments to angle and position are required during installation. This is cumbersome, inefficient, and makes it difficult to guarantee adjustment accuracy. This inconvenience not only increases the labor intensity of on-site installation and commissioning but also reduces the installation efficiency and operational flexibility of the equipment, ultimately affecting the operational stability of the entire conveying system. Therefore, to address the numerous shortcomings of existing passive alignment roller devices in terms of installation and adjustment, a new passive alignment roller device is urgently needed. Utility Model Content

[0005] The purpose of this utility model is to provide a passive correction roller device, which solves the problem that in the prior art, the overall installation angle, position and centering accuracy of the roller directly affect its correction effect. Moreover, most existing structures adopt fixed or bolted connections, which leads to repeated adjustments of angle and position during installation, resulting in cumbersome operation, low efficiency and difficulty in ensuring adjustment accuracy.

[0006] To achieve the above objectives, this utility model provides a passive correction roller device, including a base, and a support frame slidably connected to the top of the base, and a support frame rotatably connected to the top of the support frame via a pin.

[0007] Both sides of the inner side of the support frame are rotatably connected to straight rollers via rotating shafts, and both sides of the support frame are fixedly connected to side plates. A conical roller is rotatably connected to the top of each of the two side plates. Both ends of the inner side of the bearing frame are slidably connected to inner plates, and mounting plates are fixedly connected to the opposite sides of the two inner plates. One side of each of the two side plates is connected to an adjusting rod via a threaded connection, and a second bearing plate is fixedly connected to the other side of the side plate. The top of the adjusting rod is fixedly connected to a first bearing plate. Both ends of the conical roller are rotatably connected to the first bearing plate and the second bearing plate via rotating shafts, respectively. Both sides of the bearing frame are fixedly connected to fixing plates, and the top of each of the two fixing plates is provided with a limiting rod. The bottom end of the limiting rod passes through the fixing plate and the base in sequence.

[0008] The bottom two sides of the support frame are fixedly connected with sliding blocks, and the two sliding blocks are slidably connected to the top of the base through sliding grooves.

[0009] Both sides of the two inner plates are fixedly connected to sliders, and the sliders are slidably connected to the inner wall of the support frame through a sliding groove.

[0010] The support frame has insert rods on both sides, and one end of each insert rod passes through the side wall of the support frame and the slider in sequence through a slot. The slider has several slots.

[0011] One end of each of the two insert rods is fitted with a tension spring, and one end of the insert rod is elastically connected to the outer wall of the support frame through the tension spring.

[0012] Each of the two inner panels has a mounting plate fixedly connected to one end facing away from the other.

[0013] This utility model discloses a passive belt-aligning idler device. A base serves as the overall mounting foundation, with a support frame slidably connected to its top, enabling the entire idler structure to have lateral adjustment capabilities. This allows for flexible adaptation to different conveyor belt widths, improving the device's versatility and ease of installation. Fixed plates and limiting rods on both sides of the support frame ensure guiding accuracy and stability during the sliding process, preventing installation errors caused by sliding deviations. An inner plate slidably connects inside the support frame and is connected to the conveyor structure via a mounting plate, enabling multi-level adjustment of the conveyor belt base. This further enhances the device's adaptability to different installation environments and significantly improves installation efficiency and adjustment accuracy. A support frame is rotatably connected to the support frame via a pin, giving the idler a certain degree of angle adjustment capability, facilitating flexible adjustments based on the conveyor belt's operating status during installation. The combined structure of the straight roller and conical roller is rationally designed, with the straight roller supporting the conveyor belt. In the middle section, the tapered roller automatically corrects belt deviation through differential speed response, exhibiting sensitive response and stable correction effect. The tapered roller is mounted on the side plate via a first bearing plate, a second bearing plate, and a rotating shaft structure, resulting in a compact and flexible design. Combined with the threaded connection of the adjusting rod, operators can precisely adjust the tilt angle of the tapered roller by rotating the rod, adapting to different conveyor belt tensions and deviation levels, significantly improving the device's adjustment flexibility and correction accuracy. The threaded connection between the adjusting rod and the side plate is simple to operate and provides stable adjustment, avoiding the adjustment difficulties associated with traditional welding or fixed structures. This effectively solves the technical problems of inconvenient installation and adjustment, low adjustment efficiency, and poor accuracy in existing technologies. The entire device requires no external power drive, relying solely on the friction generated by the conveyor belt's own movement and its structural design to achieve automatic correction, resulting in energy saving, environmental friendliness, low maintenance costs, and a long service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall main view structure of an embodiment of this utility model.

[0016] Figure 2 This is a top view of an embodiment of the present invention.

[0017] Figure 3 This is a side view structural diagram of an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the support frame structure according to an embodiment of the present utility model.

[0019] Figure 5 This is a schematic diagram of the inner plate structure of an embodiment of this utility model.

[0020] 1. Base; 2. Bearing frame; 3. Support frame; 4. Straight roller; 5. Side plate; 6. Adjusting rod; 7. First bearing plate; 8. Second bearing plate; 9. Conical roller; 10. Inner plate; 11. Mounting plate; 12. Slider; 13. Slide groove; 14. Insert rod; 15. Tension spring; 16. Fixing plate; 17. Limiting rod; 18. Sliding block; 19. Sliding groove; 20. Slot. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figure 1-5 .

[0023] A passive correction roller device includes a base 1, and a support frame 2 is slidably connected to the top of the base 1, and a support frame 3 is rotatably connected to the top of the support frame 2 via a pin.

[0024] Both sides of the inner side of the support frame 3 are rotatably connected to straight rollers 4 via rotating shafts, and both sides of the support frame 3 are fixedly connected to side plates 5. The top of each side plate 5 is rotatably connected to a conical roller 9. Both ends of the inner side of the bearing frame 2 are slidably connected to inner plates 10, and the opposite sides of the two inner plates 10 are fixedly connected to mounting plates 11. One side of each side plate 5 is threadedly connected to an adjusting rod 6, and the other side of the side plate 5 is fixedly connected to a second bearing plate 8. The top of the adjusting rod 6 is fixedly connected to a first bearing plate 7. Both ends of the conical roller 9 are rotatably connected to the first bearing plate 7 and the second bearing plate 8 via rotating shafts. Both sides of the bearing frame 2 are fixedly connected to fixing plates 16, and the top of each fixing plate 16 is provided with a limiting rod 17. The bottom end of the limiting rod 17 passes through the fixing plate 16 and the base 1 in sequence.

[0025] First, place the base 1 at the installation position of the belt conveyor and securely fix it to the conveyor bracket with bolts. Then, according to the width of the conveyor belt and the installation position, push the bearing frame 2 to slide along the top of the base 1 to achieve initial adjustment of the overall position of the bearing frame 2 to adapt to the installation requirements of conveyor belts of different widths. The bearing frame 2 has fixing plates 16 on both sides, and a limiting rod 17 is provided at the top of the fixing plate 16. The limiting rod 17 passes through the fixing plate 16 and the base 1, playing a limiting and guiding role to ensure the stability of the bearing frame 2 during the sliding process. After the bearing frame 2 is adjusted to the correct position, the internal structure is further adjusted: the two inner plates 10 are provided at both ends of the inner side of the bearing frame 2. The two inner plates 10 can slide and pull along the inside of the bearing frame 2 and are fixedly connected to the conveyor structure through the mounting plate 11 connected to their outer side, thereby achieving the adaptation and installation of bases for conveyor belts of different widths. The support frame 3 is rotatably connected to the top of the bearing frame 2 through a pin, and has side plates 5 on both sides. The side plates 5 are rotated by a rotating shaft. A straight roller 4 is connected to support the middle area of ​​the conveyor belt. A first bearing plate 7 is provided on one side of the top of the side plate 5, and a second bearing plate 8 is provided on the other side. A conical roller 9 is connected between the first bearing plate 7 and the second bearing plate 8 through a rotating shaft. The conical roller 9 can automatically rotate and generate a differential speed response according to the conveyor belt deviation. One end of the adjusting rod 6 is connected to the first bearing plate 7, and the other end is connected to the side plate 5 by a threaded engagement. By rotating the adjusting rod 6, the tilt angle of the conical roller 9 can be changed, thereby adjusting its contact state with the conveyor belt and the correction sensitivity. When the conveyor belt deviates during operation, the conveyor belt contacts the conical roller 9. Due to the conical structure and shaft diameter difference of the conical roller 9, the two conical rollers 9 on both sides generate differential rotation, thereby automatically guiding the conveyor belt to the center position and completing the correction action. During the entire operation, the device does not require external power. It achieves the automatic correction function by relying on structural design and friction. It is responsive, stable in operation, and suitable for conveyor belt correction needs under various working conditions.

[0026] Furthermore, sliding blocks 18 are fixedly connected to both sides of the bottom of the support frame 2, and both sliding blocks 18 are slidably connected to the top of the base 1 through sliding grooves 19. When the support frame 2 is adjusted laterally along the top of the base 1, the sliding blocks 18 slide along the sliding grooves 19, which limits and guides the movement direction of the support frame 2, preventing it from deviating or getting stuck during the sliding process. The setting of this structure achieves the technical effect of improving the stability and adjustment accuracy of the sliding adjustment of the support frame 2, and enhances the overall installation adaptability and operational reliability of the device.

[0027] Furthermore, sliders 12 are fixedly connected to both sides of the two inner plates 10, and the sliders 12 are slidably connected to the inner wall of the support frame 2 through the slide groove 13. When the inner plate 10 is pulled and adjusted along the inside of the support frame 2, the sliders 12 slide along the slide groove 13 to limit and support its movement path, ensuring the stability and guidance of the inner plate 10 during the adjustment process. The setting of this structure achieves the technical effect of improving the adjustment flexibility and installation adaptability of the inner plate 10, and enhances the compatibility and installation convenience of the device with conveyor belt bases of different widths.

[0028] Furthermore, both sides of the support frame 2 are provided with insertion rods 14, and one end of each insertion rod 14 passes through the side wall of the support frame 2 and the slider 12 in sequence via slots 20. Several slots 20 are provided on the slider 12. After the inner plate 10 is pulled out and positioned, the operator can insert the insertion rods 14 into the corresponding slots 20 on the slider 12 to lock the adjusted position of the inner plate 10. The design of multiple slots 20 allows the operator to select different positions for positioning according to actual needs, thereby realizing multi-level adjustment function. The setting of this structure achieves the technical effect of improving the adjustment and positioning accuracy and structural stability of the inner plate 10, and enhances the flexibility and adaptability of the device.

[0029] Furthermore, a tension spring 15 is fitted onto one end of each of the two insertion rods 14, and one end of the insertion rod 14 is elastically connected to the outer wall of the support frame 2 through the tension spring 15. The tension spring 15 provides a restoring force for the insertion rod 14, so that the insertion rod 14 is always inserted into the slot 20 when it is not manually pulled out, thereby realizing automatic locking of the position of the slider 12. When it is necessary to adjust the position of the inner plate 10, the operator only needs to pull out the insertion rod 14 to release the lock. After the adjustment is completed, the operator releases the hand, and the insertion rod 14 automatically resets and inserts into the new slot 20 under the action of the spring. The design of this structure achieves the technical effect of improving the convenience of adjustment operation and the stability of locking, and enhances the humanized design of the device and the efficiency of on-site operation.

[0030] Furthermore, mounting plates 11 are fixedly connected to the opposite ends of the two inner plates 10. The mounting plates 11 serve as interface components for connecting with the conveyor structure. After the inner plates 10 are adjusted, the mounting plates 11 can be fixed to the conveyor support with bolts, thereby achieving a firm installation of the entire passive correction roller device. This structure achieves the technical effect of improving the installation stability and structural connection strength of the device, and enhances the safety and vibration resistance during equipment operation.

[0031] In summary:

[0032] First, place the base 1 at the installation position of the belt conveyor and securely fix it to the conveyor bracket with bolts. Then, according to the width of the conveyor belt and the installation position, push the carrier frame 2 to slide along the top of the base 1 to achieve initial adjustment of the overall position of the carrier frame 2 to adapt to the installation requirements of conveyor belts of different widths. Sliding blocks 18 are fixedly connected to both sides of the bottom of the carrier frame 2. The sliding blocks 18 are slidably connected to the top of the base 1 through sliding grooves 19, and play a guiding and limiting role during the sliding process to ensure the stability of the carrier frame 2 during the sliding process. Fixed plates 16 are provided on both sides of the carrier frame 2. The top of the fixed plates 16 is provided with limiting rods 17. The limiting rods 17 pass through the fixed plates 16 and the base 1 in sequence, and play a further limiting and guiding role. The internal structure is further adjusted after the support frame 2 is adjusted to prevent it from shifting or getting stuck during the sliding process. Two inner plates 10 are provided at both ends of the inner side of the support frame 2. Slider 12s are fixedly connected to both sides of the inner plates 10. The sliders 12 are slidably connected to the inner wall of the support frame 2 through grooves 13, providing guidance and support during the adjustment process to ensure smooth movement of the inner plates 10. Mounting plates 11 are fixedly connected to the opposite sides of the two inner plates 10 for fixed connection with the conveyor structure, enabling adaptation to different width conveyor belt bases. Insert rods 14 are provided on both sides of the support frame 2, with one end of each rod penetrating the side wall of the support frame 2 and the slot 20 on the slider 12. The slider 12 has multiple slots 20. Operators can select the corresponding slot 20 to insert the rod 14 according to the actual installation position, thus locking the inner plate 10's position. One end of the rod 14 is fitted with a tension spring 15, which is elastically connected to the outer wall of the support frame 2, ensuring that the rod 14 is always inserted into the slot 20 when not pulled out, achieving an automatic locking function. When adjusting the position of the inner plate 10, simply pull out the rod 14 to unlock it; after adjustment, releasing the rod will automatically reset it and insert it into a new slot 20. The support frame 3 is rotatably connected to the top of the support frame 2 via a pin. Side plates 5 are provided on both sides, and straight rollers 4 are rotatably connected to the side plates 5 via rotating shafts to support the middle area of ​​the conveyor belt. A first bearing plate 7 is provided on one side of the top of plate 5, and a second bearing plate 8 is provided on the other side. The first bearing plate 7 and the second bearing plate 8 are connected to a conical roller 9 by a rotating shaft. The conical roller 9 can automatically rotate and generate a differential speed response according to the deviation of the conveyor belt. One end of the adjusting rod 6 is connected to the first bearing plate 7, and the other end is connected to the side plate 5 by a threaded engagement. By rotating the adjusting rod 6, the tilt angle of the conical roller 9 can be changed, thereby adjusting its contact state with the conveyor belt and the correction sensitivity. When the conveyor belt deviates during operation, the conveyor belt contacts the conical roller 9. Due to the conical structure and shaft diameter difference of the conical roller 9, the two conical rollers 9 on both sides generate differential rotation, thereby automatically guiding the conveyor belt to the center position and completing the correction action.Throughout operation, the device requires no external power, relying on its structural design and friction to achieve automatic belt alignment. It is highly responsive, stable in operation, and suitable for conveyor belt alignment needs under various working conditions. Using base 1 as the overall mounting foundation, the carrier frame 2 is slidably connected to its top, giving the entire idler structure lateral adjustment capabilities. This allows for flexible adaptation to different conveyor belt widths, improving the device's versatility and ease of installation. Sliding blocks 18 are located on both sides of the bottom of the carrier frame 2, slidably connected to the top of base 1 via sliding grooves 19. These blocks guide and limit the sliding direction of the carrier frame 2, significantly improving the stability and accuracy of the sliding adjustment. Fixed plates 16 and limiting rods 17 are located on both sides of the carrier frame 2. The limiting rods 17 penetrate the fixed plates 16 and base 1, further enhancing the guidance during sliding and preventing deviation. The inner plate 10 is located inside the carrier frame 2. The inner plate 10 is slidably connected, with sliders 12 on both sides. The sliders 12 slide through grooves 13, making the inner plate 10 more stable during adjustment and improving installation adaptability. An mounting plate 11 is provided on the outer side of the inner plate 10 for fixed connection with the conveyor structure, enhancing the installation's stability and structural strength. Insert rods 14 are provided on both sides of the bearing frame 2. The insert rods 14 engage with the sliders 12 through slots 20 to position and lock the inner plate 10. The multiple slots 20 allow operators to select different positions for adjustment according to actual needs, improving the device's flexibility. A tension spring 15 is provided at one end of the insert rod 14, allowing it to automatically adjust when not in use. The roller automatically resets and inserts into slot 20, achieving quick locking and releasing, improving operational convenience and locking stability. Support frame 3 is rotatably connected to the top of bearing frame 2 via a pin, giving the roller a certain angle adjustment capability, facilitating flexible adjustment according to the conveyor belt's running state during installation. The combined structure of straight roller 4 and tapered roller 9 is rationally designed; straight roller 4 supports the middle of the conveyor belt, while tapered roller 9 achieves automatic correction through differential speed response when the conveyor belt deviates, exhibiting sensitive response and stable correction effect. Tapered roller 9 is mounted on side plate 5 via first bearing plate 7, second bearing plate 8, and a rotating shaft structure, resulting in a compact structure and flexible rotation, working in conjunction with adjusting rod 6. The threaded connection allows operators to precisely adjust the tilt angle of the conical roller 9 by rotating the adjusting rod 6, thus adapting to different conveyor belt tensions and deviations, significantly improving the device's adjustment flexibility and correction accuracy. The threaded connection between the adjusting rod 6 and the side plate 5 is simple to operate and provides stable adjustment, avoiding the adjustment difficulties associated with traditional welding or fixed structures. This effectively solves the technical problems of inconvenient installation and adjustment, low adjustment efficiency, and poor accuracy in existing technologies. The entire device requires no external power drive; it achieves automatic correction by relying on the friction generated by the conveyor belt itself and its structural design, resulting in energy saving, environmental friendliness, low maintenance costs, and a long service life.

[0033] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A passive alignment roller device, comprising a base, characterized in that, It also includes a support frame that is slidably connected to the top of the base, and a support frame that is rotatably connected to the top of the support frame via a pin. The inner sides of the support frame are rotatably connected to straight rollers via rotating shafts, and side plates are fixedly connected to both sides of the support frame. A tapered roller is rotatably connected to the top of each of the two side plates. Inner plates are slidably connected to both ends of the inner side of the load-bearing frame, and mounting plates are fixedly connected to opposite sides of the two inner plates. An adjusting rod is threadedly connected to one side of each of the two side plates, and a second load-bearing plate is fixedly connected to the other side of each side plate. A first load-bearing plate is fixedly connected to the top of the adjusting rod. Both ends of the tapered roller are rotatably connected to the first and second load-bearing plates via rotating shafts. Fixed plates are fixedly connected to both sides of the load-bearing frame, and limiting rods are provided at the top of both fixed plates. The bottom ends of the limiting rods pass through the fixed plates and the base in sequence.

2. The passive alignment roller device as described in claim 1, characterized in that, The bottom two sides of the support frame are fixedly connected with sliding blocks, and the two sliding blocks are slidably connected to the top of the base through sliding grooves.

3. The passive alignment roller device as described in claim 1, characterized in that, Both sides of the two inner plates are fixedly connected to sliders, and the sliders are slidably connected to the inner wall of the support frame through a sliding groove.

4. The passive alignment roller device as described in claim 1, characterized in that, Both sides of the support frame are provided with insert rods, and one end of each insert rod passes through the side wall of the support frame and the slider in sequence through a slot. The slider has several slots.

5. A passive alignment roller device as described in claim 4, characterized in that, One end of each of the two insertion rods is fitted with a tension spring, and one end of the insertion rod is elastically connected to the outer wall of the support frame through the tension spring.

6. The passive alignment roller device as described in claim 1, characterized in that, Mounting plates are fixedly connected to the opposite ends of the two inner plates.

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