Telescopic material conveying belt

Abstract

The utility model relates to the technical field of conveying belts, in particular to a telescopic material conveying belt which comprises a rack, a telescopic assembly is connected in a frame of the rack, a driving roller and a supporting carrier roller assembly are connected to the rack in a rotating mode, and a conveying belt is connected to the rack. The conveying belt is wound around the driving roller and the multiple sets of supporting carrier roller assemblies to form a closed ring on the machine frame, the machine frame is connected with a tensioning assembly enabling the conveying belt to be tensioned, the tensioning assembly comprises a tensioning roller connected to the machine frame, and the tensioning roller is located in the closed ring of the conveying belt and can move up and down under the action of the tensioning assembly. And a driving part is arranged on the rack. When the driving component drives the conveying belt to convey grain materials, the tensioning roller is synchronously driven to move towards the lower side, so that the conveying belt is tensioned and expanded towards the outer side, the conveying belt is kept in a tensioning state all the time, and the situation that conveying of the grain materials is affected due to insufficient tensioning force of the conveying belt is avoided.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt technology, and in particular to a telescopic material conveyor belt. Background Technology

[0002] In the process of grain storage, processing and transportation, in order to improve grain transportation efficiency and reduce labor intensity and transportation costs, conveyor belts are often used to continuously transport grain. Telescopic conveyor belts can flexibly adjust the conveying length according to the actual loading and unloading situation. With the needs of usage scenarios and actual conditions, the demand for telescopic conveyor belts continues to grow.

[0003] Currently, telescopic conveyor belts used in grain storage, handling, and transportation often experience insufficient tension due to issues such as belt aging, wear, rubber quality defects, and rubber belt tension fatigue. For example, patent application number 202121481994.5 discloses a telescopic conveyor belt structure. After a period of operation, the tension between the conveyor belt and the equipment's power components decreases due to the material limitations of the conveyor belt. Insufficient conveyor belt tension can lead to a series of problems such as belt slippage, misalignment, and reduced efficiency. In more serious cases, it can cause equipment damage and production interruption. Utility Model Content

[0004] This utility model is a telescopic conveyor belt proposed to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A telescopic conveyor belt includes a frame, within which a telescopic assembly is connected. A drive roller and a support roller assembly are rotatably connected to the frame. A conveyor belt is connected to the frame, and the conveyor belt forms a closed loop around the drive roller and multiple sets of support roller assemblies on the frame. A tensioning assembly is connected to the frame to keep the conveyor belt taut. The tensioning assembly includes a tension roller connected to the frame, which is located within the closed loop of the conveyor belt and can move up and down under the action of the tensioning assembly. A drive component is provided on the frame, and the drive component is connected to both the drive roller and the tensioning assembly.

[0007] A further embodiment of this utility model is that the telescopic assembly includes a sliding groove disposed on a frame, a telescopic frame slidably connected to the sliding groove, a first transmission roller and a first guide roller rotatably connected to the telescopic frame, the first transmission roller and the first guide roller being located on the left and right sides of the telescopic frame respectively, an electrically controlled telescopic rod symmetrically connected to the frame front and back, the other end of the electrically controlled telescopic rod being connected to the telescopic frame, and a second guide roller and a third guide roller rotatably connected to the frame.

[0008] A further embodiment of this utility model is that the support roller assembly includes multiple sets of first support rollers connected to the frame and multiple sets of second support rollers on the telescopic frame.

[0009] A further embodiment of this invention is that the tensioning assembly further includes a U-shaped frame connected to the frame. The U-shaped frame has a cavity, and circular through holes are provided at both ends of the cavity. A connecting rod is slidably connected within the through holes. A partition is provided at the end of the connecting rod located in the cavity. A connecting arm is provided at the other end of the connecting rod. The connecting arms on the front and rear sides are respectively rotatably sleeved with the roller shaft of the tensioning roller. An air inlet is provided in the middle horizontal portion of the U-shaped frame. A vortex pump is fixedly connected to the front side of the frame. One end of the vortex pump is connected to the outside, and a filter layer is provided at the connection port between the vortex pump and the outside. The other end of the vortex pump is connected to the air inlet through a pipe. A gas-only semi-permeable membrane is provided at the opening of the air inlet. Elastic elements are connected within the cavities of the two vertical sections of the U-shaped frame, and the other end of the elastic elements is connected to the partition.

[0010] A further embodiment of this utility model is that the driving component is a driving motor fixedly connected to the frame, a first driving sprocket and a second driving sprocket are fixedly connected to the output shaft of the driving component, a third sprocket is fixedly connected to the rotation driving shaft of the vortex pump, and a fourth sprocket is fixedly connected to the roller body of the driving roller biased towards the driving component. The first driving sprocket and the third sprocket are connected by a first chain, and the second driving sprocket and the fourth sprocket are connected by a second chain.

[0011] A further embodiment of this invention is that the frame is connected to a control box, which can control the retraction of the electrically controlled telescopic rod and the movement and stopping of the drive components.

[0012] A further embodiment of this utility model is that wheels are rotatably connected to both the front and rear sides of the left end of the horizontal part of the frame, and universal wheels are rotatably connected to both the front and rear sides of the horizontal part of the frame away from the wheels.

[0013] Compared with the prior art, the telescopic conveyor belt provided by this utility model has the following beneficial effects.

[0014] 1. This utility model uses a drive component to simultaneously drive the tension roller to move downwards while the conveyor belt is conveying grain materials, so that the conveyor belt is stretched outwards and thus the conveyor belt is always kept taut, avoiding the transmission of grain materials due to insufficient tension.

[0015] 2. This utility model adjusts the air intake pressure of the cavity by adjusting the output power of the drive component, thereby adjusting the tension of the tension roller. This allows for convenient adjustment of the equipment power according to the grain conveying rate, improving the practicality of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a second schematic diagram of the overall structure of this utility model.

[0018] Figure 3 This is a cross-sectional view of the frame structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the U-shaped frame structure of this utility model.

[0020] Figure 5 This is a cross-sectional view of the U-shaped frame structure of this utility model.

[0021] Figure 6 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0022] Figure label:

[0023] 1. Frame; 101. Sliding groove; 11. Drive roller; 111. Fourth sprocket; 12. Conveyor belt; 13. Second guide roller; 14. Third guide roller; 15. First support roller; 16. Control box; 17. Wheel; 18. Caster wheel; 2. Tension roller; 3. Drive component; 31. First drive sprocket; 32. Second drive sprocket; 33. First chain; 34. Second chain; 4. Telescopic frame; 41. First transmission roller; 42. First guide roller; 43. Electrically controlled telescopic rod; 44. Second support roller; 5. U-shaped frame; 51. Cavity; 52. Air inlet; 53. Connecting rod; 531. Partition; 532. Connecting arm; 54. Vortex pump; 541. Third sprocket; 55. Elastic element. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] When using telescopic conveyor belts to transport grain, it was found that the conveyor belts were not sufficiently tensioned due to aging and wear, which affected the normal operation of the equipment. To solve the above problem, this embodiment was designed.

[0027] Please see Figures 1 to 6 The present invention discloses a telescopic conveyor belt, comprising a frame 1, a telescopic assembly connected within the frame 1, the telescopic assembly being used to extend and shorten to adjust the length of the conveyed material on the frame 1, a drive roller 11 and a support roller assembly rotatably connected to the frame 1, a conveyor belt 12 connected to the frame 1, the conveyor belt 12 forming a closed loop around the drive roller 11 and multiple sets of support roller assemblies on the frame 1, wherein a tensioning assembly is connected to the frame 1 to keep the conveyor belt 12 taut, the tensioning assembly including a tension roller 2 connected to the frame 1, the tension roller 2 being located within the closed loop of the conveyor belt 12 and being able to move up and down under the action of the tensioning assembly and to fit against the conveyor belt 12, and a drive component 3 provided on the frame 1, the drive component 3 being connected to the drive roller 11 and the tensioning assembly respectively.

[0028] In this invention, when conveying materials such as grain, the conveyor belt 12 is in close contact with the roller surfaces of the drive roller 11, multiple sets of support roller assemblies, and tension roller 2. The drive component 3 drives the drive roller 11 to rotate. The drive roller 11 drives the conveyor belt 12 to transport the grain material placed on it through the friction between the roller surface and the inner side of the conveyor belt 12. At the same time, the drive component 3 drives the tensioning assembly to move, so that the tensioning assembly continuously drives the tension roller 2 to move downward and contact the inner side of the conveyor belt 12 with a certain pressure, so that the conveyor belt 12 expands and tightens to the lower and outer side. This ensures that the conveyor belt 12 always maintains a taut state during the conveying of grain material, and avoids the relative sliding of the conveyor belt 12 with the surface of the drive roller 11 due to aging or other reasons during the conveying of grain material, which affects the transportation of grain material, improves the working efficiency of the equipment, and extends the service life of the equipment.

[0029] Please see Figure 2 The telescopic assembly includes a sliding groove 101 mounted on the frame 1, and a telescopic frame 4 is slidably connected to the sliding groove 101. Figure 3 A first drive roller 41 and a first guide roller 42 are rotatably connected to the telescopic frame 4. The first drive roller 41 and the first guide roller 42 are passed through the telescopic frame 4 to achieve rotatable installation on the telescopic frame 4. The first drive roller 41 and the first guide roller 42 are located on the left and right sides of the telescopic frame 4, respectively. An electrically controlled telescopic rod 43 is symmetrically connected to the front and rear of the frame 1. The other end of the electrically controlled telescopic rod 43 is connected to the telescopic frame 4. A second guide roller 13 and a third guide roller 14 are rotatably connected to the frame 1. The second guide roller 13 and the third guide roller 14 are passed through the telescopic frame 4 to achieve rotatable installation on the telescopic frame 4. When adjusting the height of the grain material conveying, the electrically controlled telescopic rod 43 is controlled to extend outward. At this time, the first drive roller 41 abuts against the conveyor belt 12 on the outside of the frame 1, thereby adjusting the conveying height of the conveyor belt 12. The first guide roller 42 and the second guide roller 13 work together to adjust the movement direction of the conveyor belt 12.

[0030] Please see Figure 3 The support roller assembly includes multiple sets of first support rollers 15 connected to the frame 1 and multiple sets of second support rollers 44 on the telescopic frame 4. The first support rollers 15 and the second support rollers 44 are used to support the conveyor belt 12 to avoid problems such as belt deviation and spillage caused by uneven force on some sections of the conveyor belt 12.

[0031] Please see Figure 1 , Figure 4 , Figure 5 The tensioning assembly also includes a U-shaped frame 5 connected to the frame 1. A cavity 51 is provided inside the U-shaped frame 5. Circular through holes are provided at both ends of the cavity 51. A connecting rod 53 is slidably connected within the through holes. A partition 531 is provided at the end of the connecting rod 53 located in the cavity 51. A connecting arm 532 is provided at the other end of the connecting rod 53. The connecting arms 532 on the front and rear sides are respectively rotatably sleeved with the roller shaft of the tensioning roller 2. An air inlet 52 is provided in the middle horizontal part of the U-shaped frame 5. A vortex pump 54 is fixedly connected to the front side of the frame 1. One end of the vortex pump 54 is connected to the outside, and a filter layer is provided at the connection port of the vortex pump 54. The other end of the vortex pump 54 is connected to the air inlet 52 through a pipe, and a gas valve is provided at the opening of the air inlet 52. An elastic element 55 is connected to the two vertical cavities 51 of the semi-permeable membrane and the U-shaped frame 5. The other end of the elastic element 55 is connected to the partition plate 531. The elastic element 55 is used to overcome the weight of the tension roller 2, the connecting arm 532, etc., so that the force of the air pressure can be used to adjust the tension of the conveyor belt 12. At the same time, it avoids the tension roller 2 from causing excessive tension of the conveyor belt 12 and causing greater wear during the extension and retraction of the telescopic frame 4. The gas enters the cavity 51 through the air inlet 52 and slowly dissipates through the connecting rod 53. Since the gas entry rate is much greater than the dissipation rate, a high air pressure can be maintained in the cavity 51. Since the working power of the drive component 3 is stable and the rotation speed of the output shaft of the drive component 3 is stable, it is convenient to maintain the stability of the air pressure inside the cavity 51.

[0032] Please see Figure 1 , Figure 6The drive component 3 is a drive motor fixedly connected to the frame 1. A first drive sprocket 31 and a second drive sprocket 32 ​​are fixedly connected to the output shaft of the drive component 3. A third sprocket 541 is fixedly connected to the rotation drive shaft of the vortex pump 54. A fourth sprocket 111 is fixedly connected to the roller body of the drive roller 11, which is biased towards the drive component 3. The first drive sprocket 31 and the third sprocket 541 are connected by a first chain 33, and the second drive sprocket 32 ​​and the fourth sprocket 111 are connected by a second chain 34. It should be noted that the drive component 3 can maintain a stable working output power and output speed during operation, thereby driving the vortex pump 54 to move at a uniform speed through the first drive sprocket 31, the third sprocket 541, and the first chain 33. This ensures that the rate at which the vortex pump 54 delivers air into the cavity 51 remains stable. The air pressure inside the cavity 51 increases, driving the partition 531 to move into the cavity. The two ends of cavity 51 move outwards. The partition 531 drives the connecting arm 532 to move outwards along the axial direction of the connecting rod 53 via the connecting rod 53. This causes the tension roller 2 to press down on the conveyor belt 12 and come into contact with it. When the air pressure inside cavity 51 reaches a certain value, the inlet air pressure and the gas pressure inside the vortex pump 54 are the same. The two gas pressures cancel each other out. At this time, the roller surface of the tension roller 2 is always in close contact with the contact surface of the conveyor belt 12 under this pressure, so that the conveyor belt 12 is always expanding and tensioned downwards and outwards under the pressure of the tension roller 2. It should be noted that when it is necessary to adjust the conveying speed of the conveyor belt 12, the speed of the drive component 3 can be further increased or decreased by adjusting the conveying power of the drive component 3. When the speed is increased, the tension force received by the tension roller 2 increases accordingly, thereby improving the efficiency of conveying grain per unit time, and vice versa.

[0033] Please see Figure 1 The frame 1 is connected to a control box 16, which can control the retraction of the electrically controlled telescopic rod 43 and the movement and stopping of the drive component 3. The movements of the electrically controlled telescopic rod 43 and the drive component 3 do not interfere with each other. In actual operation, to improve operational safety, the drive component 3 stops working when the electrically controlled telescopic rod 43 extends or retracts. At this time, the equipment adjusts the height and length of the grain material conveying. In this scheme, the electrically controlled telescopic rod 43 is symmetrically arranged on the front and rear sides of the frame 1 and moves synchronously under the control of the control component in the control box 16. When conveying grain material, the drive component 3 starts to work. For safety reasons, the control box 16 controls the electrically controlled telescopic rod 43 to stop working during this process. The control box 16 can control the electrically controlled telescopic rod 43 and the drive component 3 respectively. The electrical connection between them is existing technology in many technical fields and will not be described in detail.

[0034] Please see Figure 1To facilitate the movement of the equipment, wheels 17 are rotatably connected to both the front and rear sides of the left end of the horizontal part of the frame 1, and casters 18 are rotatably connected to both the front and rear sides of the horizontal part of the frame 1 away from the wheels 17. The installation of wheels 17 and casters 18 is existing technology and will not be described in detail. The installation of both facilitates the control of the equipment to adjust the position of the grain material conveying, thereby improving the practicality of the device.

[0035] In summary, when the conveying height of grain materials is adjusted by telescopic adjustment, the control box 16 controls the drive component 3 to stop moving and controls the extension and retraction of the electric telescopic rod 43. After the electric telescopic rod 43 drives the telescopic frame 4 to adjust to a suitable height, the electric telescopic rod 43 remains in that position. The drive component 3 drives the tension roller 2 and the conveyor belt 12 to move through the first chain 33 and the second chain 34 respectively. This ensures that the tension roller 2 maintains a constant pressure on the conveyor belt 12 during the conveying of grain materials, thus preventing belt slippage and deviation due to insufficient tension during the conveying of grain materials, thereby improving the practicality of the equipment.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A telescopic conveyor belt, comprising a frame (1), characterized in that, The frame (1) is connected to a telescopic assembly. The frame (1) is rotatably connected to a drive roller (11) and a support roller assembly. The frame (1) is connected to a conveyor belt (12). The conveyor belt (12) forms a closed loop around the drive roller (11) and multiple sets of support roller assemblies on the frame (1). The frame (1) is connected to a tensioning assembly that keeps the conveyor belt (12) taut. The tensioning assembly includes a tensioning roller (2) connected to the frame (1). The tensioning roller (2) is located within the closed loop of the conveyor belt (12) and can move up and down under the action of the tensioning assembly. The frame (1) is provided with a drive component (3). The drive component (3) is connected to the drive roller (11) and the tensioning assembly respectively.

2. The telescopic conveyor belt according to claim 1, characterized in that, The telescopic assembly includes a sliding groove (101) disposed on the frame (1), a telescopic frame (4) is slidably connected to the sliding groove (101), a first transmission roller (41) and a first guide roller (42) are rotatably connected to the telescopic frame (4), the first transmission roller (41) and the first guide roller (42) are respectively located on the left and right sides of the telescopic frame (4), an electrically controlled telescopic rod (43) is symmetrically connected to the frame (1) front and back, the other end of the electrically controlled telescopic rod (43) is connected to the telescopic frame (4), and a second guide roller (13) and a third guide roller (14) are rotatably connected to the frame (1).

3. A telescopic conveyor belt according to claim 2, characterized in that, The support roller assembly includes multiple sets of first support rollers (15) connected to the frame (1) and multiple sets of second support rollers (44) on the telescopic frame (4).

4. A telescopic conveyor belt according to claim 3, characterized in that, The tensioning assembly also includes a U-shaped frame (5) connected to the frame (1). The U-shaped frame (5) has a cavity (51) inside. Circular through holes are provided at both ends of the cavity (51). A connecting rod (53) is slidably connected inside the through holes. A partition (531) is provided at the end of the connecting rod (53) located in the cavity (51). A connecting arm (532) is provided at the other end of the connecting rod (53). The connecting arms (532) on the front and rear sides are respectively rotatably sleeved with the roller shaft of the tensioning roller (2). The middle horizontal part of the U-shaped frame (5) The frame (1) is provided with an air inlet (52). A vortex pump (54) is fixedly connected to the front side of the frame (1). One end of the vortex pump (54) is connected to the outside. A filter layer is provided at the connection port of the vortex pump (54) to the outside. The other end of the vortex pump (54) is connected to the air inlet (52) through a pipe. A gas one-way semi-permeable membrane is provided at the opening of the air inlet (52). An elastic element (55) is connected in the two vertical cavity (51) of the U-shaped frame (5). The other end of the elastic element (55) is connected to the partition plate (531).

5. A telescopic conveyor belt according to claim 4, characterized in that, The drive component (3) is a drive motor fixedly connected to the frame (1). The output shaft of the drive component (3) is fixedly connected to a first drive sprocket (31) and a second drive sprocket (32). The rotation drive shaft of the vortex pump (54) is fixedly connected to a third sprocket (541). The roller body of the drive roller (11) biased towards the drive component (3) is fixedly connected to a fourth sprocket (111). The first drive sprocket (31) and the third sprocket (541) are connected by a first chain (33). The second drive sprocket (32) and the fourth sprocket (111) are connected by a second chain (34).

6. A telescopic conveyor belt according to claim 5, characterized in that, The frame (1) is connected to a control box (16), which can control the retraction of the electric telescopic rod (43) and the movement and stopping of the drive component (3).

7. A telescopic conveyor belt according to claim 1, characterized in that, The left end of the horizontal part of the frame (1) is rotatably connected to both the front and rear sides of the frame (1), and the horizontal part of the frame (1) away from the wheel (17) is rotatably connected to both the front and rear sides of the frame (1).

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