An unpowered roller assembly

Abstract

The utility model discloses a kind of unpowered roller assembly, comprising: driven roller, side-by-side arranged first guide roller and second guide roller, first belt, belt tensioning mechanism;The driven roller is located in the middle below first guide roller and second guide roller, the first belt is sequentially arranged in the outer circular surface of first guide roller, driven roller, second guide roller, first guide roller, driven roller, second guide roller and first belt jointly enclose V-shaped transmission channel for supporting and guiding material;The belt tensioning mechanism includes the second belt connected with the end part of driven roller, the fixed end adjusting mechanism arranged in one end of second belt, and the tensioning end adjusting mechanism arranged in the other end of second belt, the fixed end adjusting mechanism is used to adjust the initial length of second belt, and the tensioning end adjusting mechanism is used to adjust the tension of second belt.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, and in particular to a non-powered roller assembly. Background Technology

[0002] With the widespread application of industrial automation and conveying equipment, conveying devices in conveying systems are gradually developing towards high efficiency, stability, and energy saving. Traditional conveying devices mostly use electrically driven roller systems, but such systems usually require additional electric drive units, resulting in high energy consumption, high maintenance costs, and difficulty in flexibly adjusting to different working conditions. Therefore, how to design a conveying device that can efficiently and reliably convey materials and has automatic adjustment functions without relying on an external drive motor has become a major challenge in the current technological field.

[0003] While some unpowered roller conveyor systems have been applied in the present technology, their structures are relatively simple, lacking an effective tensioning system to adjust belt tension and failing to adapt flexibly to different conveying requirements. Furthermore, the support structures used in some unpowered roller conveyor systems are overly complex, leading to inconvenience in installation and maintenance. Therefore, there is an urgent need for an unpowered roller conveyor assembly that can ensure stable transmission and has an automatic tensioning function without a drive motor, to adapt to different environments and working requirements. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a non-powered roller assembly.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: This utility model provides a non-powered roller assembly, including: a driven roller, a first guide roller and a second guide roller arranged side by side, a first belt, and a belt tensioning mechanism; The driven roller is located below and between the first guide roller and the second guide roller. The first belt is sequentially wound around the outer surfaces of the first guide roller, the driven roller, and the second guide roller. The first guide roller, the driven roller, the second guide roller, and the first belt together form a V-shaped conveyor channel for supporting and guiding materials. The belt tensioning mechanism includes a second belt connected to the end of the driven roller, a fixed end adjustment mechanism disposed at one end of the second belt, and a tensioning end adjustment mechanism disposed at the other end of the second belt. The fixed end adjustment mechanism is used to adjust the initial length of the second belt, and the tensioning end adjustment mechanism is used to adjust the tension of the second belt.

[0006] Preferably, the unpowered roller assembly further includes two opposing support frames, with the first guide roller and the second guide roller rotatably mounted on the upper part of the support frames; the driven roller is rotatably mounted on the lower part of the support frames and is located below and between the first guide roller and the second guide roller.

[0007] Preferably, the support frame is an L-shaped support frame, and an oblong hole is provided on the bottom surface of the L-shaped support frame for fixing the L-shaped support frame; a gate-shaped fixing frame is also installed on the L-shaped support frame.

[0008] Preferably, the fixed end adjustment mechanism includes a detachable L-shaped fixing plate mounted on a portal frame; the vertical portion of the L-shaped fixing plate has multiple height mounting holes. One end of the second belt is fastened to a height mounting hole. By selecting different height mounting holes, the second belt can be fixed to the L-shaped fixing plate, thereby adjusting the initial length of the second belt.

[0009] Preferably, the tensioning end adjustment mechanism includes a tensioning fixing plate, an elastic element, a pin, and an adjusting screw; the other end of the second belt is fixed to the bottom of the tensioning fixing plate, one end of the elastic element is connected to the upper part of the tensioning fixing plate, and the other end is connected to the pin; one end of the pin passes through the portal frame, and the adjusting screw is set on the pin to adjust the length of the pin passing through the portal frame.

[0010] Preferably, the elastic element is a tension spring.

[0011] Preferably, the driven roller includes a driven shaft and a roller sleeved on the driven shaft; the end of the driven shaft is provided with a driven wheel, and the second belt is mounted on the driven wheel.

[0012] The technical solution of this utility model has the following beneficial effects: This invention's non-powered roller assembly does not have an independent drive motor. Instead, it relies on the friction between the material and the belt to move the belt, thereby rotating the roller. This design not only saves on the energy consumption of the drive motor but also reduces maintenance costs and the complexity of the drive system, meeting current industrial demands for energy conservation and environmental protection.

[0013] This invention utilizes a first guide roller, a driven roller, and a second guide roller to form a V-shaped conveying channel. During material conveying, the material naturally aligns with the center within the V-shaped channel, preventing deviation or tilting. This design significantly improves the stability and reliability of material conveying, and is particularly suitable for conveying irregularly shaped materials.

[0014] The belt tensioning mechanism of this invention consists of a fixed-end adjustment mechanism and a tensioning-end adjustment mechanism. The fixed-end adjustment mechanism adjusts the initial length of the belt through multiple holes, while the tensioning-end adjustment mechanism precisely adjusts the belt tension through a tension spring and an adjusting screw. Especially when the belt loses tension due to wear or elongation, the elastic element can automatically compensate, ensuring the belt is always in optimal tension, avoiding the inconvenience of frequent manual adjustments required in traditional belt systems.

[0015] The support frame of this utility model is designed as an L-shaped support frame and equipped with oblong holes for easy and quick installation and position adjustment. The portal frame design makes all adjustment mechanisms easy to install and can be disassembled and adjusted as needed, greatly reducing maintenance difficulty and cost. In addition, the simple structural design allows the entire unpowered roller assembly to be adapted to conveyor systems of different sizes and configurations, improving the product's versatility.

[0016] Compared to traditional electric roller systems, this invention employs a power-free drive and a simple tensioning design, significantly reducing production and maintenance costs. Furthermore, due to its simple structure and strong adaptability, it can be widely applied in various fields such as food, packaging, and logistics, and is particularly suitable for working environments with high temperatures and humidity.

[0017] In summary, the non-powered roller assembly of this utility model has many advantages such as energy saving, stability, and easy maintenance. It can effectively reduce enterprise production costs, improve production efficiency, and has strong adaptability and flexibility. It is an excellent conveying equipment that meets the needs of modern industry. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 3 . Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] like Figures 1-3 As shown, this utility model provides a non-powered roller assembly, including: a driven roller 1, a first guide roller 2 and a second guide roller 3 arranged side by side, a first belt (not shown) and a belt tensioning mechanism 5.

[0025] In this embodiment, the axes of the first guide roller 2 and the second guide roller 3 are parallel to each other, and the axis of the driven roller 1 is also parallel to the axes of the first guide roller 2 and the second guide roller 3. In a plane perpendicular to the axes of each roller, the driven roller 1 is located below the middle of the first guide roller 2 and the second guide roller 3, thereby forming a stable triangular arrangement in space.

[0026] The first belt is a ring-shaped belt that is sequentially wound around the outer surfaces of the first guide roller 2, the driven roller 1, and the second guide roller 3. Through this winding arrangement, the first guide roller 2, the driven roller 1, the second guide roller 3, and the first belt together form a V-shaped conveyor channel for supporting and guiding materials. When materials are placed in the V-shaped conveyor channel, both sides of the materials contact the belt segments of the first belt between the first guide roller 2 and the driven roller 1, and between the second guide roller 3 and the driven roller 1, respectively. Thus, under the combined force of the belt segments on both sides, the materials are lifted, guided, and centered.

[0027] The belt tensioning mechanism includes a second belt 6 connected to the end of the driven roller 1, a fixed-end adjustment mechanism 7 disposed at one end of the second belt 6, and a tensioning-end adjustment mechanism 8 disposed at the other end of the second belt 6. The second belt 6 is preferably a flexible strip, a portion of which is wound around the driven pulley at the end of the driven roller 1. By changing the effective length and tension of the second belt 6, the force acting on the driven roller 1 can be adjusted, thereby adjusting the tension of the first belt in accordance with the installation position of the driven roller 1. Specifically, the fixed-end adjustment mechanism 7 is used to adjust the initial length of the second belt 6 in stages, and the tensioning-end adjustment mechanism 8 is used to finely adjust the tension of the second belt 6, thereby adapting to the tension requirements of the first belt under different working conditions.

[0028] In this embodiment, the unpowered roller assembly is typically positioned between the preceding feeding mechanism and the subsequent processing station. The assembly itself does not have a drive motor. When the preceding feeding mechanism pushes or conveys material into the V-shaped conveyor channel, the friction between the material and the first belt drives the first belt to move, thereby driving the driven roller 1, the first guide roller 2, and the second guide roller 3 to rotate, achieving unpowered conveying and centering guidance of the material. The preceding feeding mechanism is at least one of a chain conveyor, a belt conveyor, or a push rod conveyor. The unpowered roller assembly is arranged between the preceding feeding mechanism and the subsequent processing station to center the material from the preceding feeding mechanism and stably guide it to the subsequent processing station.

[0029] In this embodiment, the unpowered roller assembly further includes two opposing support frames 10. The two ends of the first guide roller 2 and the second guide roller 3 are rotatably mounted on the upper part of the support frame 10 via rotating shafts, i.e., the upper region of the two support frames 10. The two ends of the driven roller 1 are rotatably mounted on the lower region of the support frame 10 via driven rotating shafts, so that the driven roller 1 is located in the middle and lower part of the cross section of the first guide roller 2 and the second guide roller 3.

[0030] Preferably, the support frame 10 is an L-shaped support frame with several oblong holes 101 extending along the installation direction on its bottom surface. These holes are used to fix the L-shaped support frame 10 onto the external equipment frame with anchor bolts. The oblong holes 101 provide a certain adjustment margin for the L-shaped support frame 10 during installation, facilitating fine-tuning of the overall position of the unpowered roller assembly according to the site conditions, thereby improving the docking accuracy with the preceding feeding mechanism and subsequent workstations. A portal frame 11 is also installed on each L-shaped support frame 10. The portal frame 11 preferably includes two vertical column sections and one horizontal connecting section, forming an overall portal structure, which provides an installation reference and support for the fixed end adjustment mechanism 7 and the tensioning end adjustment mechanism 8.

[0031] In this embodiment, the fixed end adjustment mechanism 7 includes an L-shaped fixing plate 12 detachably mounted on the portal frame 11. The L-shaped fixing plate 12 includes a vertical portion extending in the vertical direction and a horizontal portion extending in the horizontal direction. The vertical portion has multiple height mounting holes 121 spaced apart in the vertical direction. One end of the second belt 6 is fastened to a certain height mounting hole 121 by bolts, nuts, or other fasteners. During installation, different height mounting holes 121 can be selected as needed to change the effective length of the second belt 6, achieving graded adjustment of the initial length of the second belt 6. This multi-hole fixing method allows for adaptation to different specifications and tension strokes without replacing the second belt 6, improving the applicability of the unpowered roller assembly. The L-shaped fixing plate 12 adopts a detachable installation structure, for example, by bolting to the horizontal connecting section or vertical column section of the portal frame 11. When it is necessary to replace the second belt 6 of a different specification or to maintain the fixed end structure, only the L-shaped fixing plate 12 needs to be removed, making operation convenient and maintenance costs low.

[0032] In this embodiment, the tensioning end adjustment mechanism 8 includes a tensioning fixing plate 13, an elastic element 14, a pin 15, and an adjusting screw 16. The other end of the second belt 6 is fixed to the bottom of the tensioning fixing plate 13, for example, by clamping and fixing the second belt 6 to the lower surface of the tensioning fixing plate 13 using a pressure plate and bolts.

[0033] One end of the elastic element 14 is connected to the upper part of the tensioning and fixing plate 13, and the other end is connected to the pin 15. The elastic element 14 is preferably a tension spring. One end of the spring can be fixed to the connecting hole or connecting ear plate on the upper part of the tensioning and fixing plate 13 by means of hooks, ear plates, etc., and the other end is fixed to the end of the pin 15 by hooks or connecting rings, so that the tensioning and fixing plate 13 will have an upward tensioning tendency under the pulling force of the elastic element 14.

[0034] One end of the pin 15 passes through the portal frame 11. An adjusting screw 16 is mounted on the pin 15, preferably a nut or an adjusting block with internal threads. The adjusting screw 16 is threadedly connected to the pin 15 to limit the extension length of the pin 15 relative to the portal frame 11. By rotating the adjusting screw 16, the effective length of the pin 15 passing through the portal frame 11 can be changed, thereby changing the tension of the elastic element 14 and achieving fine adjustment of the tension of the second belt 6.

[0035] When the adjusting screw 16 is rotated away from the portal frame 11, the pin 15 moves outward under the action of the adjusting screw 16, increasing the tension of the elastic element 14 and thus increasing the tension of the second belt 6. Conversely, when the adjusting screw 16 is rotated towards the portal frame 11, the extension length of the pin 15 relative to the portal frame 11 decreases, reducing the tension of the elastic element 14 and thus decreasing the tension of the second belt 6. Utilizing the elasticity of the elastic element 14, the tension of the second belt 6 can be automatically compensated for when the length of the first belt changes slightly due to wear, aging, or temperature variations. This ensures that the first belt remains within a relatively stable tension range, guaranteeing a stable and reliable transmission effect for the V-shaped conveyor channel.

[0036] In this embodiment, the driven roller 1 includes a driven shaft and a roller body sleeved on the driven shaft. The two ends of the driven shaft are rotatably mounted on the lower part of the support frame 10. A driven wheel is provided at the end of the driven shaft. The second belt 6 is wound around the outer circumference of the driven wheel. Under the combined action of the fixed end adjustment mechanism 7 and the tensioning end adjustment mechanism 8, the wrap angle and tension of the second belt 6 on the outer circumference of the driven wheel can be adjusted as needed. When the preceding feeding mechanism drives the material to move in the V-shaped conveyor channel, the first belt drives the driven roller 1 to rotate, the driven shaft rotates accordingly, and the driven wheel rotates synchronously, so that the second belt 6 undergoes a slight displacement relative to the portal frame 11. Under the action of the elastic element 14, dynamic tension is achieved, ensuring the working stability of the entire unpowered roller assembly during operation.

[0037] With the above structural arrangement, the unpowered roller assembly of this embodiment has the following advantages: On the one hand, the V-shaped conveying channel formed by the first guide roller 2, the second guide roller 3 and the driven roller 1 allows the material to naturally move towards the bottom of the V-shape during the conveying process, which has good self-centering and centering guidance functions, and reduces the situation of material deviation and tilting. On the other hand, the two-stage tensioning structure consisting of the second belt 6, the fixed end adjustment mechanism 7, and the tensioning end adjustment mechanism 8 can adjust the belt tension within a wide range, and the elastic element 14 can automatically compensate for the belt elongation, reducing frequent manual adjustments and improving the reliability and maintenance convenience of the whole machine.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A non-powered roller assembly, characterized in that, include: Driven roller, first guide roller and second guide roller arranged side by side, first belt, belt tensioning mechanism; The driven roller is located below and between the first guide roller and the second guide roller. The first belt is sequentially wound around the outer surfaces of the first guide roller, the driven roller, and the second guide roller. The first guide roller, the driven roller, the second guide roller, and the first belt together form a V-shaped conveyor channel for supporting and guiding materials. The belt tensioning mechanism includes a second belt connected to the end of the driven roller, a fixed end adjustment mechanism disposed at one end of the second belt, and a tensioning end adjustment mechanism disposed at the other end of the second belt. The fixed end adjustment mechanism is used to adjust the initial length of the second belt, and the tensioning end adjustment mechanism is used to adjust the tension of the second belt.

2. The unpowered roller assembly according to claim 1, characterized in that, The unpowered roller assembly also includes two opposing support frames, with the first guide roller and the second guide roller rotatably mounted on the upper part of the support frames; the driven roller is rotatably mounted on the lower part of the support frames and is located below and between the first guide roller and the second guide roller.

3. The unpowered roller assembly according to claim 2, characterized in that, The support frame is an L-shaped support frame, and a waist-shaped hole is also provided on the bottom surface of the L-shaped support frame. A door-shaped fixing frame is also installed on the L-shaped support frame.

4. The unpowered roller assembly according to claim 3, characterized in that, The fixed end adjustment mechanism includes a detachable L-shaped fixing plate mounted on a portal frame; the vertical portion of the L-shaped fixing plate has multiple height mounting holes. One end of the second belt is fastened to a height mounting hole. By selecting different height mounting holes, the second belt can be fixed to the L-shaped fixing plate, thereby adjusting the initial length of the second belt.

5. The unpowered roller assembly according to claim 4, characterized in that, The tensioning end adjustment mechanism includes a tensioning fixing plate, an elastic element, a pin, and an adjusting screw; the other end of the second belt is fixed to the bottom of the tensioning fixing plate, one end of the elastic element is connected to the upper part of the tensioning fixing plate, and the other end is connected to the pin; one end of the pin passes through the portal frame, and the adjusting screw is set on the pin to adjust the length of the pin passing through the portal frame.

6. The unpowered roller assembly according to claim 5, characterized in that, The elastic element is a tension spring.

7. The unpowered roller assembly according to claim 5, characterized in that, The driven roller includes a driven shaft and a roller sleeved on the driven shaft; the end of the driven shaft is provided with a driven wheel, and the second belt is installed on the driven wheel.

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