Tensioning mechanism of belt conveyor

Abstract

The utility model provides a tensioning mechanism of a belt conveyor, which relates to the technical field of belt tensioning and comprises a frame and a belt conveyor mounted on the frame, the belt conveyor comprises a belt, a mounting plate is further fixedly mounted on the frame, a tensioning component is arranged on the mounting plate and comprises a height adjusting device, an angle adjusting device and a tensioning wheel, and the height adjusting device, the angle adjusting device and the tensioning wheel are fixedly mounted on the frame. The height adjusting device is installed on the installation plate, the output end of the height adjusting device is connected with the angle adjusting device, and a tensioning wheel is rotatably installed at the output end of the angle adjusting device and attached to the belt. The position and the angle of the tensioning wheel are adjusted through the height adjusting device and the angle adjusting device, tension reduction caused by abrasion, extension and the like in the long-time operation process of the belt can be compensated, the belt is kept in a proper tensioning state all the time, normal operation of the belt conveyor is guaranteed, and the service life of the belt conveyor is prolonged. And the problems of slipping, low transmission efficiency and the like caused by loosening of the belt are avoided.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of belt tensioning, in particular to a tensioning mechanism of a belt conveyor. Background Art

[0002] Traditional belt conveyors use relatively simple methods for belt tensioning. A common method involves periodic manual adjustment of a tensioning device fixed to the conveyor frame. This device often utilizes a pulley structure that is either non-adjustable or has a very limited adjustment range. For example, some simple belt conveyors simply have a fixed tensioning pulley installed during installation. If the belt slackens during use, timely and effective adjustment is difficult.

[0003] Some belt conveyors use a weight-type tensioning method, which creates tension by suspending a weight at a specific location on the belt. However, while this method can maintain belt tension to a certain extent, the weight of the weight is fixed and cannot be flexibly adjusted to the actual working conditions of the belt (such as varying loads and operating speeds). Furthermore, the weight takes up a lot of space, limiting its use in space-constrained applications.

[0004] As a conveyor belt operates, it can loosen due to various factors. For example, prolonged friction and stretching can cause the belt material to fatigue and stretch. If the belt slackens beyond a certain level, the friction between the belt and pulley decreases, making it prone to slippage. When the belt slips, the conveyor's transmission efficiency decreases significantly, making it unable to effectively transmit the motor's power to the driven components, impacting the equipment's normal operation.

[0005] Furthermore, uneven belt tension can lead to increased belt wear. In areas where belt tension is too low, the contact pressure between the belt and pulley is uneven, accelerating localized wear. In areas where tension is too high, the belt is subjected to excessive stress, making it more susceptible to fatigue damage. This shortens the belt's service life and increases equipment maintenance costs and downtime.

[0006] In modern industrial production, belt conveyor applications are becoming increasingly complex, and the requirements for their operational stability and reliability are also increasing. Therefore, a tensioning mechanism is needed that can easily and precisely adjust belt tension to suit varying working environments and operational requirements. This tensioning mechanism should be able to flexibly adjust the position and angle of the tensioning pulley based on the actual belt slack, ensuring that the belt is always optimally tensioned, improving the conveyor's transmission efficiency, reducing wear on the belt and related components, and extending the equipment's service life. Utility Model Content

[0007] 1. Technical problems to be solved by the utility model:

[0008] The utility model provides a kind of tensioning mechanism of belt conveyor, to solve the technical problem existing in the above background technique.

[0009] 2. Technical scheme:

[0010] To achieve the above object, the utility model provides a technical scheme: a kind of tensioning mechanism of belt conveyor, including rack and the belt conveyor being installed on the rack, the belt conveyor includes belt, still fixedly installed with mounting plate on the rack, tensioning assembly is provided on the mounting plate, the tensioning assembly includes height adjusting device, angle adjusting device and tensioning wheel, the height adjusting device is installed on the mounting plate, the output end of the height adjusting device is connected with the angle adjusting device, tensioning wheel is rotatably installed on the output end of the angle adjusting device, the tensioning wheel is attached with the belt.

[0011] Preferably, the belt conveyor includes motor fixed on the rack, motor shaft is fixedly installed with driving pulley on the motor, bearing seat is also installed on the rack, rotating shaft is rotatably installed on the bearing seat through bearing, one end of the rotating shaft is fixedly installed with driven pulley, the driving pulley and the driven pulley are connected by belt.

[0012] Preferably, the height adjusting device includes installation box connected with the mounting plate, installation cavity is formed in the bottom of the installation box, adjusting screw is rotatably installed in the installation cavity, threaded block is installed on the adjusting screw by thread, the threaded block is connected with the angle adjusting device, guide shaft is also provided in the installation cavity, the adjusting screw is parallel with the guide shaft, the threaded block is slidably installed on the guide shaft, one end of the adjusting screw is provided with rotating handle.

[0013] Preferably, the angle adjusting device includes mounting seat and mounting frame, two mounting ears are provided on the mounting seat, two connecting barrels are provided on one end of the mounting frame, mounting shaft is provided on the other end, the tensioning wheel is rotatably installed on the mounting shaft, connecting screw hole is formed in the mounting ear, the connecting barrel and mounting ear are connected by fixed bolt two and connecting screw hole.

[0014] Preferably, connecting screw rod is vertically fixedly installed on the threaded block, through hole is formed in the mounting seat, one end of the connecting screw rod passes through the through hole and is threadedly connected with locking nut, a slot is formed in the installation box, the installation box is installed on the mounting plate by a slot and fixed bolt one.

[0015] 3. Advantageous effects:

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] This utility model adjusts the position and angle of the tensioner pulley through the height adjustment device and the angle adjustment device, which can compensate for the tension drop caused by wear, elongation, etc. during long-term operation of the belt, so that the belt is always kept in a properly tensioned state, ensuring the normal operation of the belt conveyor and avoiding problems such as slippage and reduced transmission efficiency due to belt relaxation. The appropriate tensioning force can reduce abnormal wear between the belt and the driving and driven pulleys, reduce the risk of local fatigue damage to the belt due to uneven tension, and extend the service life of the entire belt conveyor system.

[0018] The height adjustment device of this utility model features a simple structure of adjustment screw and threaded block, allowing for easy adjustment of the tensioner pulley height by rotating the handle, making operation convenient. The connection between the mounting ears and the connecting tube of the angle adjustment device also facilitates fine-tuning of the angle, adapting to the precise requirements for belt tensioning under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the utility model from another angle;

[0021] Figure 3 This is a structural diagram of the angle adjustment device of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the height adjustment device of the utility model;

[0023] Figure 5 This is a structural schematic diagram of the height adjustment device of the utility model from another angle.

[0024] Reference numerals:

[0025] 1. Frame; 2. Conveyor belt; 21. Motor; 22. Driving pulley; 23. Bearing seat; 24. Rotating shaft; 25. Driven pulley; 26. Belt; 3. Mounting plate; 4. Tensioning assembly; 5. Height adjustment device; 51. Mounting box; 52. Mounting cavity; 53. Adjusting screw; 54. Threaded block; 55. Guide shaft; 56. Connecting screw; 57. Rotating handle; 58. Slotted groove; 59. Fixing bolt 1; 510. Locking nut; 6. Angle adjustment device; 61. Mounting seat; 62. Mounting ear; 63. Mounting frame; 64. Connecting tube; 65. Mounting shaft; 66. Connecting screw hole; 67. Fixing bolt 2; 7. Tensioning pulley. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0029] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," "provided with," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] It should be noted that the structures not introduced in the present invention do not involve the design points and improvement directions of the present invention, and are the same as the existing technology or can be implemented by using the existing technology, so they are not described in detail here. Example

[0031] Refer to the attached Figures 1 to 5A tensioning mechanism of a belt conveyor includes a frame 1 and a belt conveyor 2 installed on the frame 1. The belt conveyor 2 includes a belt 26. A mounting plate 3 is also fixedly installed on the frame 1. A tensioning assembly 4 is provided on the mounting plate 3. The tensioning assembly 4 includes a height adjustment device 5, an angle adjustment device 6 and a tensioning pulley 7. The height adjustment device 5 is installed on the mounting plate 3. The output end of the height adjustment device 5 is connected to the angle adjustment device 6. A tensioning pulley 7 is rotatably installed on the output end of the angle adjustment device 6. The tensioning pulley 7 is in contact with the belt 26.

[0032] The belt conveyor 2 includes a motor 21 fixed on the frame 1, a driving pulley 22 is fixedly mounted on the motor shaft of the motor 21, a bearing seat 23 is also mounted on the frame 1, a rotating shaft 24 is rotatably mounted on the bearing seat 23 through a bearing, a driven pulley 25 is fixedly mounted on one end of the rotating shaft 24, and the driving pulley 22 and the driven pulley 25 are connected by a belt 26.

[0033] The height adjustment device 5 includes a mounting box 51 connected to the mounting plate 3, and a mounting cavity 52 is provided at the bottom of the mounting box 51. An adjusting screw 53 is rotatably installed in the mounting cavity 52, and a threaded block 54 is threadedly installed on the adjusting screw 53. The threaded block 54 is connected to the angle adjustment device 6. A guide shaft 55 is also provided in the mounting cavity 52. ​​The adjusting screw 53 is parallel to the guide shaft 55, and the threaded block 54 is slidably installed on the guide shaft 55 up and down. A rotating handle 57 is provided at one end of the adjusting screw 53.

[0034] The angle adjustment device 6 includes a mounting seat 61 and a mounting frame 63. Two mounting ears 62 are provided on the mounting seat 61. Two connecting tubes 64 are provided at one end of the mounting frame 63, and a mounting shaft 65 is provided at the other end. The tensioning wheel 7 is rotatably mounted on the mounting shaft 65. A connecting screw hole 66 is provided on the mounting ear 62. The connecting tube 64 and the mounting ear 62 are connected by a fixing bolt 2 67 and a connecting screw hole 66.

[0035] A connecting screw 56 is vertically fixedly mounted on the threaded block 54. A through-hole is defined in the mounting base 61, through which one end of the connecting screw 56 passes and is threadedly connected to the locking nut 510. A slot 58 is defined in the mounting box 51, which is mounted on the mounting plate 3 via the slot 58 and a fixing bolt 59. The slot 58 allows for sufficient adjustment of the mounting box 51's position on the mounting plate 3. During installation of the tensioning assembly 4, the position of the mounting box 51 can be fine-tuned along the slot 58, thereby moving the entire tensioning assembly 4. This allows for more precise positioning of the tensioning pulley 7 in the optimal initial contact position with the belt 26, ensuring that the belt 26 is properly preloaded before operation.

[0036] Working principle:

[0037] To adjust the tension of belt 26, first operate height adjustment device 5. Adjustment screw 53 is rotated by turning handle 57. Since adjustment screw 53 is threadedly connected to threaded block 54 and threaded block 54 is constrained by a guide shaft 55 parallel to adjustment screw 53, it can only slide up and down, so as adjustment screw 53 rotates, threaded block 54 moves upward or downward along guide shaft 55. For example, turning handle 57 clockwise moves threaded block 54 upward, while turning it counterclockwise moves it downward. Connecting screw 56, vertically fixed to threaded block 54, also moves accordingly. Connecting screw 56 passes through a through-hole in mounting base 61 and is threadedly connected to locking nut 510, thereby raising or lowering mounting base 61, the entire angle adjustment device 6, and tensioning pulley 7, thereby changing the relative height position of tensioning pulley 7 and belt 26 and preliminarily adjusting the tension of belt 26.

[0038] After the height is adjusted to a certain level, it may be necessary to fine-tune the angle of the tensioning pulley 7 to achieve the optimal tensioning effect. Loosen the second fixing bolt 67 and rotate the connecting tube 64 at one end of the mounting bracket 63 around the connecting screw hole 66 on the mounting ear 62 of the mounting base 61 to a certain angle. After adjusting the appropriate angle, tighten the second fixing bolt 67 to secure the connecting tube 64 and the mounting ear 62 together. This allows for precise adjustment of the contact angle between the tensioning pulley 7 and the belt 26, further optimizing the tension of the belt 26 and ensuring that the belt 26 maintains the appropriate tension between the driving pulley 22 and the driven pulley 25, allowing the belt conveyor 2 to operate stably.

[0039] The above-mentioned embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, which all fall within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A belt conveyor tensioning mechanism, comprising a frame (1) and a belt conveyor (2) mounted on the frame (1), characterized in that: The belt conveyor (2) includes a belt (26). A mounting plate (3) is fixedly mounted on the frame (1). A tensioning assembly (4) is provided on the mounting plate (3). The tensioning assembly (4) includes a height adjustment device (5), an angle adjustment device (6) and a tensioning wheel (7). The height adjustment device (5) is mounted on the mounting plate (3). The output end of the height adjustment device (5) is connected to the angle adjustment device (6). A tensioning wheel (7) is rotatably mounted on the output end of the angle adjustment device (6). The tensioning wheel (7) is in contact with the belt (26).

2. The belt conveyor tensioning mechanism according to claim 1, characterized in that: The belt conveyor (2) includes a motor (21) fixed on the frame (1), a driving pulley (22) is fixedly mounted on the motor shaft of the motor (21), a bearing seat (23) is also mounted on the frame (1), a rotating shaft (24) is rotatably mounted on the bearing seat (23) through a bearing, a driven pulley (25) is fixedly mounted on one end of the rotating shaft (24), and the driving pulley (22) and the driven pulley (25) are connected by a belt (26).

3. A belt conveyor tensioning mechanism according to claim 1 or 2, characterized in that: The height adjustment device (5) comprises a mounting box (51) connected to the mounting plate (3), a mounting cavity (52) is provided at the bottom of the mounting box (51), an adjusting screw (53) is rotatably mounted in the mounting cavity (52), a threaded block (54) is threadedly mounted on the adjusting screw (53), the threaded block (54) is connected to the angle adjustment device (6), a guide shaft (55) is further provided in the mounting cavity (52), the adjusting screw (53) is parallel to the guide shaft (55), the threaded block (54) is slidably mounted on the guide shaft (55) up and down, and a rotating handle (57) is provided at one end of the adjusting screw (53).

4. The belt conveyor tensioning mechanism according to claim 3, characterized in that: The angle adjustment device (6) comprises a mounting seat (61) and a mounting frame (63), wherein the mounting seat (61) is provided with two mounting ears (62), one end of the mounting frame (63) is provided with two connecting tubes (64), and the other end is provided with a mounting shaft (65), the tensioning wheel (7) is rotatably mounted on the mounting shaft (65), the mounting ear (62) is provided with a connecting screw hole (66), and the connecting tube (64) and the mounting ear (62) are connected by a fixing bolt (67) and a connecting screw hole (66).

5. The belt conveyor tensioning mechanism according to claim 4, characterized in that: A connecting screw (56) is vertically fixedly mounted on the threaded block (54), a through hole is provided on the mounting seat (61), one end of the connecting screw (56) passes through the through hole and is threadedly connected to the locking nut (510), a slot (58) is provided on the mounting box (51), and the mounting box (51) is mounted on the mounting plate (3) via the slot (58) and a fixing bolt (59).

Images