A high-efficiency and energy-saving variable frequency belt conveyor

Abstract

This utility model provides a high-efficiency and energy-saving variable frequency belt conveyor, comprising two mounting frames, with a drive roller and a driven roller rotatably mounted at both ends of the two mounting frames respectively. A conveyor belt is mounted on the surface of the drive roller and the driven roller. A speed reducer is fixedly mounted on one side of one of the mounting frames, and a variable frequency motor is mounted on the input end of the speed reducer. Several support plates are fixedly connected between the two mounting frames, and pressure sensors are embedded in the support plates. When the pressure sensor detects that material is being conveyed on the surface of the conveyor belt, the material will squeeze the pressure sensor during the conveying process under the action of gravity. After the pressure sensor detects the signal, it sends it to the controller. The controller controls the variable frequency motor to increase its speed, thereby conveying the material quickly. When there is no material being conveyed on the surface of the conveyor belt, the controller controls the variable frequency motor to run at a low speed, thereby achieving an energy-saving effect.

Description

Technical Field

[0001] This utility model belongs to the field of belt conveyor technology, specifically relating to a high-efficiency and energy-saving variable frequency belt device. Background Technology

[0002] Belt conveyors are widely used in industries such as mining, ports, power, metallurgy, and building materials. They use a ring belt as the load-bearing and traction component, forming a closed-loop motion between the drive drum and the idler drum to achieve material transport. The basic structure of a belt conveyor mainly consists of a conveyor belt, drive unit, drums, idlers, tensioning device, and frame. The traditional working mode of belt conveyors is usually constant speed operation, that is, regardless of whether there is material on the conveyor belt or the size of the material load, the drive motor always runs at a constant speed. This constant speed operation mode has the following problems: In the no-load state, the motor and its transmission system still need to consume rated power to overcome the system's own frictional resistance and inertia. For long-distance, high-power belt conveyors, this power loss will accumulate into huge energy waste in the long-term operation, significantly increasing production costs. Moreover, continuous constant speed operation will also lead to continuous wear of equipment components, affecting service life. In the existing technology, workers sometimes use manual shutdown when there is no work plan, but this method relies on manual judgment, has a delayed response, and frequent start-stop will impact the motor and power grid. Based on this, we propose a high-efficiency and energy-saving variable frequency belt device. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency and energy-saving variable frequency belt device, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency and energy-saving variable frequency belt device, comprising two mounting frames, with a drive roller and a driven roller rotatably mounted at both ends of the two mounting frames respectively, and several support rollers rotatably mounted between the drive roller and the driven roller in the two mounting frames. A conveyor belt is mounted on the surface of the drive roller and the driven roller, and a tensioning roller for tensioning the conveyor belt is also provided between the two mounting frames. A strip groove is opened on the side of the mounting frame at one end of the driven roller, and the connecting shafts at both ends of the tensioning roller pass through the corresponding strip grooves and are rotatably connected to the connecting block. Tensioning components for adjusting the tensioning roller are mounted on the surface of the two mounting frames at the strip grooves, and the connecting block is slidably connected to the tensioning components. A reducer is fixedly mounted on one side of one of the mounting frames, with a variable frequency motor mounted on the input end of the reducer, and the output end of the reducer connected to the connecting shaft of the drive roller. Adjustment components for adjusting the angle with the conveyor belt are also mounted on the bottom of the two mounting frames. Several support plates are fixedly connected between the two mounting frames, and pressure sensors are embedded in the support plates.

[0005] As a preferred technical solution of this utility model, the tensioning component includes a square frame fixedly installed on the side wall of the mounting frame, the strip groove is located inside the square frame, and sliding grooves are provided on both inner walls of the square frame. Guide strips are integrally provided at both ends of the connecting block, and the guide strips are slidably installed in the sliding grooves. A first through hole and a second through hole are respectively provided at the top and bottom of the square frame. A first screw is fixedly connected to the top of the connecting block, and a second screw is rotatably installed at the bottom of the connecting block. The first screw passes through the first through hole and a first nut is threaded on its surface. A second nut is fixedly connected to the bottom of the square frame at a position coaxial with the second through hole. The second screw is threadedly connected to the second nut and extends through the second through hole to the bottom of the square frame.

[0006] As a preferred technical solution of this utility model, the adjustment component includes a base frame, with two support rods fixedly connected to one end of the base frame. Each support rod has a first rotating groove at its top. Two mounting frames are fixedly connected to a first rotating block at the bottom of one end of the reducer, and two mounting frames are fixedly connected to a second rotating block at the bottom of one end of the driven roller. The first rotating blocks are rotatably mounted within the first rotating grooves. Slide rails are fixedly connected to the surfaces of the two transverse beams of the base frame. A slider is slidably mounted on the surface of the slide rails. A third rotating block is fixedly connected to the surface of the slider. An adjustment rod is provided at the top of the third rotating block. The two ends of the adjustment rod have a second rotating groove and a third rotating groove, respectively. The second rotating block is rotatably mounted within the second rotating groove, and the third rotating block is rotatably mounted within the third rotating groove. A first receiving plate is also fixedly connected between the two transverse beams of the base frame. A power component for driving the mounting frames to adjust their angle is mounted on the surface of the first receiving plate.

[0007] As a preferred technical solution of this utility model, the power assembly includes a first rotating seat fixedly installed on the surface of the first receiving plate, the first rotating seat being rotatably connected to the fixed end of the hydraulic rod, a second receiving plate being fixedly connected between the two mounting frames, a second rotating seat being fixedly connected to the bottom end of the second receiving plate, and the telescopic end of the hydraulic rod being rotatably connected to the second rotating seat.

[0008] As a preferred technical solution of this utility model, a controller is installed on the side of one of the mounting frames, the variable frequency motor and the pressure sensor are both electrically connected to the controller, and the hydraulic rod is electrically connected to an external control switch.

[0009] As a preferred technical solution of this utility model, the controller can be a PID controller. After the pressure sensor detects the pressure signal, it outputs the signal to the controller. The controller outputs the result of the PID calculation to the frequency converter of the variable frequency motor to realize the motor speed regulation.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: A pressure sensor is installed to detect whether material is being conveyed on the surface of the conveyor belt. If the pressure sensor detects material being conveyed, the material will compress the pressure sensor during the conveying process under the influence of gravity. After detecting the signal, the pressure sensor sends it to the controller, which controls the variable frequency motor to increase its speed, thereby conveying the material quickly. When no material is being conveyed on the surface of the conveyor belt, the controller controls the variable frequency motor to run at a low speed. This method achieves energy saving. Furthermore, the low-speed operation of the device when unloaded reduces the wear rate of components such as the conveyor belt, extending the service life of the equipment. Additionally, the conveyor belt device can adjust the conveying angle, allowing material to be conveyed to higher places, thus improving the practicality of the belt device. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a partial structural schematic diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the mounting frame in this utility model;

[0015] Figure 4 This is a partial cross-sectional structural diagram of the present invention;

[0016] Figure 5 This is a schematic diagram of the tensioning component in this utility model;

[0017] Figure 6 This is a schematic diagram of the adjustment component in this utility model.

[0018] In the diagram: 1. Mounting frame; 2. Driven roller; 3. Driven roller; 4. Support roller; 5. Conveyor belt; 6. Tensioning roller; 7. Strip groove; 8. Connecting block; 9. Tensioning assembly; 91. Square frame; 92. Slide groove; 93. First screw; 94. Second screw; 95. First nut; 96. Second nut; 10. Reducer; 11. Variable frequency motor; 12. Adjusting assembly; 121. Base frame; 122. Support rod; 123. Slide rail; 124. Slider; 125. Third rotating block; 126. Adjusting rod; 127. First receiving plate; 128. Power assembly; 1281. First rotating seat; 1282. Hydraulic rod; 13. Support plate; 14. Pressure sensor; 15. First rotating block; 16. Second rotating block; 17. Second receiving plate; 18. Second rotating seat; 19. Controller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-6 This utility model provides the following technical solution: a high-efficiency and energy-saving variable frequency belt device, comprising two mounting frames 1, with a drive roller 2 and a driven roller 3 rotatably mounted at both ends of the two mounting frames 1 respectively, and a plurality of support rollers 4 rotatably mounted between the drive roller 2 and the driven roller 3 in the two mounting frames 1, with a conveyor belt 5 mounted on the surface of the drive roller 2 and the driven roller 3, and a tension roller 6 for tensioning the conveyor belt 5 is also provided between the two mounting frames 1, with a strip groove 7 opened on the side of the mounting frame 1 at one end of the driven roller 3, and the connecting shafts at both ends of the tension roller 6 passing through the corresponding strip grooves 7 and connecting to the connecting... The connecting block 8 is rotatably connected, and the surfaces of the two mounting frames 1 are equipped with tensioning components 9 for adjusting the tensioning roller 6 at the strip groove 7. The connecting block 8 is slidably connected to the tensioning components 9. A reducer 10 is fixedly installed on one side of one of the mounting frames 1. A variable frequency motor 11 is installed at the input end of the reducer, and the output end of the reducer is connected to the connecting shaft of the drive roller 2. Adjustment components 12 for adjusting the angle with the conveyor belt 5 are also installed at the bottom of the two mounting frames 1. Several support plates 13 are fixedly connected between the two mounting frames 1, and pressure sensors 14 are embedded in the support plates 13.

[0021] In this embodiment, the tensioning assembly 9 includes a square frame 91 fixedly installed on the side wall of the mounting frame 1, a strip groove 7 located inside the square frame 91, and sliding grooves 92 provided on both inner walls of the square frame 91. Guide strips are integrally provided at both ends of the connecting block 8, and the guide strips are slidably installed in the sliding grooves 92. A first through hole and a second through hole are respectively provided at the top and bottom of the square frame 91. A first screw 93 is fixedly connected to the top of the connecting block 8, and a second screw 94 is rotatably installed at the bottom of the connecting block 8. The first screw 93 passes through the first through hole and a first nut 95 is threadedly installed on its surface. A second nut 96 is fixedly connected to the bottom of the square frame 91 at a location coaxial with the second through hole. The second screw 94 is threadedly connected to the second nut 96 and extends through the second through hole to the bottom of the square frame 91.

[0022] Specifically, when the conveyor belt 5 becomes loose, making it difficult to transport materials normally, the operator rotates the second screw 94 to push the connecting block 8 upward. The guide strip and slide 92 improve the stability of the connecting block 8's movement. The connecting block 8 then drives the tension roller 6 upward, thus tensioning the conveyor belt 5. As the connecting block 8 moves upward, the first screw 93 moves upward within the first insertion hole. The operator then tightens the first nut 95 to further fix the position of the connecting block 8, effectively reducing the impact of vibration during device operation on the tensioning roller 6's tensioning effect caused by the rotation of the second screw 94.

[0023] In this embodiment, the adjustment assembly 12 includes a base frame 121. Two support rods 122 are fixedly connected to one end of the base frame 121. The top of each support rod 122 is provided with a first rotating groove. A first rotating block 15 is fixedly connected to the bottom of one end of each mounting frame 1 located at the reducer 10. A second rotating block 16 is fixedly connected to the bottom of one end of each mounting frame 1 located at the driven roller 3. The first rotating block 15 is rotatably mounted in the first rotating groove. Slide rails 123 are fixedly connected to the surfaces of the two transverse beams of the base frame 121. The surfaces of the slide rails 123 slide... A slider 124 is mounted on the bottom frame 121. A third rotating block 125 is fixedly connected to the surface of the slider 124. An adjusting rod 126 is provided on the top of the third rotating block 125. A second rotating groove and a third rotating groove are respectively opened at both ends of the adjusting rod 126. The second rotating block 16 is rotatably mounted in the second rotating groove, and the third rotating block 125 is rotatably mounted in the third rotating groove. A first receiving plate 127 is also fixedly connected between the two transverse beams of the bottom frame 121. A power component 128 for driving the mounting frame 1 to adjust the angle is mounted on the surface of the first receiving plate 127.

[0024] Specifically, the power component 128 pushes the mounting frame 1, thereby causing the slider 124 to drive the third rotating block 125 to slide on the surface of the slide rail 123 under the action of the adjusting rod 126. The first rotating block 15 is rotatably installed in the first rotating groove at the top of the support rod 122, the second rotating block 16 is rotatably installed in the second rotating groove, and the third rotating block 125 is rotatably installed in the third rotating groove. Therefore, the conveying angle of the conveyor belt 5 can be adjusted in this way, so that the conveyor belt 5 can convey materials to a higher position, effectively improving the practicality of the belt device.

[0025] In this embodiment, the power assembly 128 includes a first rotating seat 1281 fixedly mounted on the surface of the first receiving plate 127. The first rotating seat 1281 is rotatably connected to the fixed end of the hydraulic rod 1282. A second receiving plate 17 is fixedly connected between the two mounting frames 1. A second rotating seat 18 is fixedly connected to the bottom end of the second receiving plate 17. The telescopic end of the hydraulic rod 1282 is rotatably connected to the second rotating seat 18.

[0026] Specifically, the first rotating seat 1281 is rotatably connected to the fixed end of the hydraulic rod 1282, and the telescopic end of the hydraulic rod 1282 is rotatably connected to the second rotating seat 18. Therefore, the operating angle of the conveyor belt 5 can be adjusted by working the hydraulic rod 1282.

[0027] In this embodiment, a controller 19 is mounted on the side of one of the mounting frames 1. The variable frequency motor 11 and the pressure sensor 14 are both electrically connected to the controller 19, and the hydraulic rod 1282 is electrically connected to an external control switch.

[0028] Specifically, the controller 19 can process the pressure signal detected by the pressure sensor 14 and control the variable frequency motor 11 to adjust its speed.

[0029] Working Principle: The conveyor belt 5 is tensioned by the tensioning component 9, and the operating angle of the conveyor belt 5 is adjusted by the adjusting component 12. The variable frequency motor 11, in conjunction with the reducer 10, drives the drive roller 2 to rotate. Therefore, under the action of the drive roller 2 and the driven roller 3, the conveyor belt 5 conveys the material. The support roller 4 and the support plate 13 provide support for the conveyor belt 5, improving the material conveying efficiency. When material is conveyed on the surface of the conveyor belt 5, the weight of the material causes the conveyor belt 5 to press against the support plate 13. At this time, the pressure sensor 14 detects the pressure signal, and then the controller 19 controls the variable frequency motor 11 to increase the speed, thereby conveying the material quickly. When there is no material on the surface of the conveyor belt 5, the controller 19 controls the variable frequency motor 11 to run at a low speed, thus enabling the device to achieve an automatic operation mode of "high speed with material, low speed without material". This method can achieve energy saving, and the low-speed operation of the device when unloaded can reduce the wear rate of components such as the conveyor belt 5 and extend the service life of the equipment.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency energy-saving variable frequency belt device, comprising two mounting frames (1) and a reducer, characterized in that: Two mounting frames (1) are rotatably mounted with a drive roller (2) and a driven roller (3) at their ends respectively. Several support rollers (4) are rotatably mounted between the two mounting frames (1) and the drive roller (2) and the driven roller (3). A conveyor belt (5) is mounted on the surface of the drive roller (2) and the driven roller (3). A tension roller (6) is also provided between the two mounting frames (1) to tension the conveyor belt (5). A strip groove (7) is opened on the side of the mounting frame (1) at one end of the driven roller (3). The connecting shafts at both ends of the tension roller (6) pass through the corresponding strip groove (7) and are rotatably connected to the connecting block (8). The surfaces of the two mounting frames (1) are respectively... A tensioning assembly (9) for adjusting the tensioning roller (6) is installed at the strip groove (7). The connecting block (8) is slidably connected to the tensioning assembly (9). A speed reducer (10) is fixedly installed on one side of one of the mounting frames (1). A variable frequency motor (11) is installed at the input end of the speed reducer. The output end of the speed reducer is connected to the connecting shaft of the drive roller (2). An adjustment assembly (12) for adjusting the angle with the conveyor belt (5) is also installed at the bottom of the two mounting frames (1). Several support plates (13) are fixedly connected between the two mounting frames (1). A pressure sensor (14) is embedded in the support plate (13).

2. The high-efficiency energy-saving variable frequency belt conveyor according to claim 1, characterized in that: The tensioning assembly (9) includes a square frame (91) fixedly installed on the side wall of the mounting frame (1). The strip groove (7) is located inside the square frame (91). The inner walls of both sides of the square frame (91) are provided with sliding grooves (92). The two ends of the connecting block (8) are integrally provided with guide strips. The guide strips are slidably installed in the sliding grooves (92). The top and bottom of the square frame (91) are respectively provided with a first through hole and a second through hole. The top of the connecting block (8) is fixedly connected with a first screw (93). The bottom of the connecting block (8) is rotatably installed with a second screw (94). The first screw (93) passes through the first through hole and the surface is threaded with a first nut (95). The bottom of the square frame (91) is coaxially connected with the second through hole and the second nut (96) is fixedly connected. The second screw (94) and the second nut (96) are threadedly connected and extend through the second through hole to the bottom of the square frame (91).

3. The high-efficiency energy-saving variable frequency belt conveyor according to claim 1, characterized in that: The adjusting assembly (12) includes a base frame (121). Two support rods (122) are fixedly connected to one end of the base frame (121). The top of each support rod (122) is provided with a first rotating groove. A first rotating block (15) is fixedly connected to the bottom of one end of each mounting frame (1) located at the reducer (10). A second rotating block (16) is fixedly connected to the bottom of one end of each mounting frame (1) located at the driven roller (3). The first rotating block (15) is rotatably installed in the first rotating groove. Slide rails (123) are fixedly connected to the surfaces of the two transverse beams of the base frame (121). The surfaces of the slide rails (123) slide... A slider (124) is mounted on the bottom frame (121). A third rotating block (125) is fixedly connected to the surface of the slider (124). An adjusting rod (126) is provided on the top of the third rotating block (125). A second rotating groove and a third rotating groove are respectively opened at both ends of the adjusting rod (126). The second rotating block (16) is rotatably mounted in the second rotating groove, and the third rotating block (125) is rotatably mounted in the third rotating groove. A first receiving plate (127) is also fixedly connected between the two transverse beams of the bottom frame (121). A power component (128) for driving the mounting frame (1) to adjust the angle is mounted on the surface of the first receiving plate (127).

4. The high-efficiency energy-saving variable frequency belt conveyor according to claim 3, characterized in that: The power assembly (128) includes a first rotating seat (1281) fixedly installed on the surface of the first receiving plate (127). The first rotating seat (1281) is rotatably connected to the fixed end of the hydraulic rod (1282). A second receiving plate (17) is fixedly connected between the two mounting frames (1). A second rotating seat (18) is fixedly connected to the bottom end of the second receiving plate (17). The telescopic end of the hydraulic rod (1282) is rotatably connected to the second rotating seat (18).

5. The high-efficiency energy-saving variable frequency belt conveyor according to claim 1, characterized in that: A controller (19) is mounted on the side of one of the mounting frames (1). The variable frequency motor (11) and the pressure sensor (14) are both electrically connected to the controller (19), and the hydraulic rod (1282) is electrically connected to an external control switch.

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