Belt tensioning mechanism of belt conveyor

Abstract

The utility model discloses a belt tensioning mechanism of a belt conveyor, which belongs to the technical field of belt conveyors, and comprises a bottom plate, two groups of vertical plates are arranged on the top surface of the bottom plate, the top ends of the two groups of vertical plates are fixedly connected with conveying frames, two conveying rollers are rotatably connected between the two conveying frames, and the two conveying rollers are fixedly connected with the bottom surface of the bottom plate. And a plurality of electric hydraulic rods are fixedly mounted on the top surface of the bottom plate. In the utility model, when the conveying belt is used for conveying, the tension sensor is used for detecting the tension of the conveying belt on the pulling roller, when the tension sensor detects that the tension on the conveying belt is too large, the electric hydraulic rod drives the pulling roller to move upwards to reduce the tension on the conveying belt, and when the tension sensor detects that the tension on the conveying belt is too small, the electric hydraulic rod drives the pulling roller to move upwards to reduce the tension on the conveying belt. And the electric hydraulic rod drives the pulling roller to move downwards to increase the tension of the conveying belt, so that the tension degree of the conveying belt is automatically adjusted within a certain specific range, and the practicability of the belt tensioning mechanism of the belt conveyor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of belt conveyors, and more specifically to a belt tensioning mechanism of a belt conveyor. Background Art

[0002] Belt conveyors, also known as rubber belt conveyors, are widely used in various industries such as home appliances, electronics, electrical appliances, machinery, tobacco, injection molding, post and telecommunications, printing, and food, for assembly, testing, debugging, packaging, and transportation of objects. After the belt conveyor has been running for a period of time, the belt will expand and contract due to objective reasons such as changes in ambient temperature and the heat emitted by the material during operation. At the same time, the belt will also stretch during its own operation, which will cause the belt to loosen, causing a series of abnormal phenomena such as slipping and noise. Therefore, it is necessary to adjust the tension of the belt to avoid affecting the operation of the system.

[0003] After searching, the utility model patent with announcement number CN208037363U discloses a conveyor belt tensioning device, including a tensioning roller parallel to the active roller and the passive roller, the tensioning roller is arranged above the lower section of the belt between the active roller and the passive roller; a lifting rod is arranged at both ends of the tensioning roller, the tensioning roller can rotate and can move up and down along the lifting rod; the lifting rod is specifically a lead screw whose lower end is rotatably connected to the base, the two ends of the tensioning roller are respectively rotatably connected to a moving block, and each corresponding thread of the moving block is connected to a lead screw; the two lead screws are respectively an active lead screw and a passive lead screw, the active lead screw is connected to a driving mechanism that can drive it to rotate; the active lead screw and the passive lead screw are connected by a transmission mechanism; a locking mechanism is installed on the active lead screw or the passive lead screw; the device is easy to operate, saves time and effort, does not require the cooperation of multiple staff members, saves manpower, has low labor intensity, and has high work efficiency.

[0004] However, the above patents still have the following shortcomings: it requires manual shutdown to adjust the tension of the belt, which is inconvenient to adjust the tension by oneself, and is not practical. In addition, the conveyor belt is supported by only three rollers, and the materials transported on the conveyor belt will cause the conveyor belt to deform downward, affecting the tension of the conveyor belt and the quality of adjustment. For this reason, we propose a belt tensioning mechanism for a belt conveyor. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a belt tensioning mechanism for a belt conveyor.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A belt tensioning mechanism of a belt conveyor comprises a base plate, the top surface of the base plate is provided with two groups of vertical plates, the top ends of the two groups of vertical plates are fixedly connected with a conveying frame, two conveying rollers are rotatably connected between the two conveying frames, a plurality of electric hydraulic rods are fixedly installed on the top surface of the base plate, the top ends of the plurality of electric hydraulic rods are fixedly connected with a lifting plate, a tension sensor is fixedly installed on the top surface of the lifting plate, the top end of the tension sensor is fixedly connected with a U-shaped frame, a plurality of pulling rollers are rotatably connected to the inner side of the U-shaped frame, a conveyor belt is sleeved on the outer sides of the plurality of pulling rollers and the two conveying rollers, a limiting mechanism is provided on the inner side of the conveying frame, and a controller is provided on the bottom surface of the lifting plate.

[0008] As a preferred solution of the utility model, a plurality of support rollers are rotatably connected between the two conveying frames, and the top surfaces of the support rollers are in contact with the inner side surfaces of the conveyor belt.

[0009] As a preferred solution of the utility model, the limiting mechanism includes a plurality of telescopic tubes fixedly connected to the inner side of the conveying frame, the inner walls of the plurality of telescopic tubes are fixedly connected with springs, the ends of the springs are fixedly connected with telescopic columns, the ends of the telescopic columns are fixedly connected with a limiting plate, and the side of the limiting plate is in contact with the side of the conveyor belt.

[0010] As a preferred solution of the utility model, a servo motor is fixedly installed on the outer side of the conveying frame, and the output shaft of the servo motor is connected to one end of a conveying roller shaft.

[0011] As a preferred solution of the utility model, the side surface of the telescopic column is in contact with the inner wall of the telescopic tube.

[0012] As a preferred solution of the utility model, a protective elastic cloth is fixedly connected to the top surface of the lifting plate, the top surface of the protective elastic cloth is connected to the bottom surface of the U-shaped frame, and the protective elastic cloth is sleeved on the outside of the tension sensor.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the utility model, when the conveyor belt is transporting, a tension sensor is used to detect the tension of the conveyor belt applied to the pulling roller. When the tension sensor detects that the tension applied to the conveyor belt is too large, the electric hydraulic rod drives the pulling roller to move upward to reduce the tension of the conveyor belt. When the tension sensor detects that the tension applied to the conveyor belt is too small, the electric hydraulic rod drives the pulling roller to move downward to increase the tension of the conveyor belt. In this way, the tension of the conveyor belt can be automatically adjusted within a specific range, which has good practicality.

[0015] (2) In the utility model, when the conveyor belt is used to transport materials, the conveyor belt is supported by the support rollers on the inner side of the conveyor frame to avoid deformation of the conveyor belt, ensure the working quality of the conveyor belt tension detection and adjustment, and improve the working quality of the belt tensioning mechanism of the belt conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the limiting mechanism of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the limiting mechanism of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Bottom plate; 2. Electric hydraulic rod; 3. Lifting plate; 4. Tension sensor; 5. U-shaped frame; 6. Pulling roller; 8. Vertical plate; 9. Conveyor frame; 10. Conveyor roller; 11. Conveyor belt; 12. Servo motor; 13. Limiting mechanism; 14. Controller; 15. Protective elastic cloth; 16. Support roller; 17. Telescopic tube; 18. Spring; 19. Telescopic column; 20. Limiting plate. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-4 A belt tensioning mechanism of a belt conveyor comprises a bottom plate 1, two groups of vertical plates 8 are arranged on the top surface of the bottom plate 1, the top ends of the two groups of vertical plates 8 are fixedly connected with a conveying frame 9, two conveying rollers 10 are rotatably connected between the two conveying frames 9, a plurality of electric hydraulic rods 2 are fixedly installed on the top surface of the bottom plate 1, a lifting plate 3 is fixedly connected to the top ends of the plurality of electric hydraulic rods 2, a tension sensor 4 is fixedly installed on the top surface of the lifting plate 3, a U-shaped frame 5 is fixedly connected to the top end of the tension sensor 4, a plurality of pulling rollers 6 are rotatably connected to the inner side of the U-shaped frame 5, a conveying belt 11 is sleeved on the outer sides of the plurality of pulling rollers 6 and the two conveying rollers 10, a limiting mechanism 13 is arranged on the inner side of the conveying frame 9, and a controller 14 is arranged on the bottom surface of the lifting plate 3.

[0027] For details, please refer to Figure 2 A plurality of support rollers 16 are rotatably connected between the two conveying frames 9 , and the top surfaces of the support rollers 16 are in contact with the inner side surfaces of the conveying belt 11 .

[0028] In this embodiment, the support rollers 16 are used to support the conveyor belt 11 to prevent the conveyor belt 11 from being deformed due to weight.

[0029] For details, please refer to Figures 1 to 4 The limiting mechanism 13 includes a plurality of telescopic tubes 17 fixedly connected to the inner side of the conveying frame 9, the inner walls of the plurality of telescopic tubes 17 are fixedly connected with springs 18, the ends of the springs 18 are fixedly connected with telescopic columns 19, the ends of the telescopic columns 19 are fixedly connected with limiting plates 20, and the side surfaces of the limiting plates 20 are in contact with the side surfaces of the conveying belt 11.

[0030] In this embodiment, the limiting plate 20 is used to limit the side of the conveyor belt 11 to prevent the conveyed materials from falling from the side of the conveyor belt 11.

[0031] For details, please refer to Figure 1 and Figure 2 A servo motor 12 is fixedly mounted on the outer side of the conveying frame 9 , and an output shaft of the servo motor 12 is connected to one end of a rotating shaft of a conveying roller 10 .

[0032] In this embodiment, the servo motor 12 is used to drive the conveying roller 10 and the conveying belt 11 to rotate, and the conveying belt 11 is used to convey the material.

[0033] For details, please refer to Figure 4 The side surface of the telescopic column 19 is in contact with the inner wall of the telescopic tube 17 .

[0034] In this embodiment, the stability of the telescopic column 19 in the telescopic tube 17 is ensured, and the stability of the limiting plate 20 is also ensured.

[0035] For details, please refer to Figure 1 The top surface of the lifting plate 3 is fixedly connected with a protective elastic cloth 15 , the top surface of the protective elastic cloth 15 is connected to the bottom surface of the U-shaped frame 5 , and the protective elastic cloth 15 is sleeved on the outside of the tension sensor 4 .

[0036] In this embodiment, the tension sensor 4 is protected by the protective elastic cloth 15 to ensure the accuracy of tension detection by the tension sensor 4.

[0037] Working principle: When in use, start the servo motor 12 to drive the conveyor roller 10 to rotate, and use the conveyor roller 10 to drive the conveyor belt 11 to rotate, and use the conveyor belt 11 to transport materials. When the material is placed on the conveyor belt 11, the conveyor belt 11 is subjected to the weight of the material, so that the conveyor belt 11 tends to move downward. At the same time, the support roller 16 is used to support the conveyor belt 11 to prevent the conveyor belt 11 from moving downward in a large size. In addition, the pulling roller 6 will be subjected to the upward pulling force of the conveyor belt 11, so that the tension sensor 4 is subjected to the upward pulling force. When the tension sensor 4 When the tension is too large, the controller 14 controls the electric hydraulic rod 2 to start, and uses the electric hydraulic rod 2 to drive the lifting plate 3, the tension sensor 4, the U-shaped frame 5 and the pulling roller 6 to move upward, thereby reducing the tension on the conveyor belt 11. When the tension sensor 4 detects that the tension on the pulling roller 6 is too small, it indicates that the conveyor belt 11 is loose. At this time, the electric hydraulic rod 2 drives the lifting plate 3, the tension sensor 4, the U-shaped frame 5 and the pulling roller 6 to move downward, and uses the pulling roller 6 to tighten the conveyor belt 11, thereby realizing automatic adjustment of the tension of the conveyor belt 11.

[0038] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A belt tensioning mechanism for a belt conveyor, comprising a bottom plate (1), characterized in that: The top surface of the base plate (1) is provided with two groups of vertical plates (8), the top ends of the two groups of vertical plates (8) are fixedly connected with a conveying frame (9), and two conveying rollers (10) are rotatably connected between the two conveying frames (9). A plurality of electric hydraulic rods (2) are fixedly installed on the top surface of the base plate (1), and the top ends of the plurality of electric hydraulic rods (2) are fixedly connected with a lifting plate (3). A tension sensor (4) is fixedly installed on the top surface of the lifting plate (3), and the top end of the tension sensor (4) is fixedly connected with a U-shaped frame (5). The inner side of the U-shaped frame (5) is rotatably connected with a plurality of pulling rollers (6), and the outer sides of the plurality of pulling rollers (6) and the two conveying rollers (10) are sleeved with a conveyor belt (11). A limiting mechanism (13) is provided on the inner side of the conveying frame (9), and a controller (14) is provided on the bottom surface of the lifting plate (3).

2. The belt tensioning mechanism of a belt conveyor according to claim 1, characterized in that: A plurality of support rollers (16) are rotatably connected between the two conveying frames (9), and the top surfaces of the support rollers (16) are in contact with the inner side surfaces of the conveying belt (11).

3. The belt tensioning mechanism of a belt conveyor according to claim 1, characterized in that: The limiting mechanism (13) comprises a plurality of telescopic tubes (17) fixedly connected to the inner side of the conveying frame (9), the inner walls of the plurality of telescopic tubes (17) are fixedly connected to springs (18), the ends of the springs (18) are fixedly connected to telescopic columns (19), the ends of the telescopic columns (19) are fixedly connected to limiting plates (20), and the side surfaces of the limiting plates (20) are in contact with the side surfaces of the conveying belt (11).

4. The belt tensioning mechanism of a belt conveyor according to claim 1, characterized in that: A servo motor (12) is fixedly mounted on the outer side of the conveying frame (9), and an output shaft of the servo motor (12) is connected to one end of a rotating shaft of a conveying roller (10).

5. The belt tensioning mechanism of a belt conveyor according to claim 3, characterized in that: The side surface of the telescopic column (19) is in contact with the inner wall of the telescopic tube (17).

6. The belt tensioning mechanism of a belt conveyor according to claim 1, characterized in that: The top surface of the lifting plate (3) is fixedly connected to a protective elastic cloth (15), the top surface of the protective elastic cloth (15) is connected to the bottom surface of the U-shaped frame (5), and the protective elastic cloth (15) is sleeved on the outside of the tension sensor (4).

Images