Belt type conveying equipment based on permanent magnet motor

Abstract

The utility model relates to belt type conveying equipment based on a permanent magnet motor, which comprises a machine frame, a variable frequency motor and a plurality of groups of transmission units are arranged on the machine frame, each transmission unit comprises a rotating shaft, a chain wheel and a conveying roller, the rotating shafts are rotatably connected with the machine frame, the conveying rollers and the chain wheels are fixedly sleeved outside the rotating shafts, and the conveying rollers are fixedly sleeved outside the chain wheels. The chain wheels and the variable frequency motor are located on the outer side of the rack, a driving wheel is installed on an output shaft of the variable frequency motor, a conveying chain is connected between the driving wheel and the chain wheels, and a conveying belt is connected between the conveying rollers. A sensor adjusting unit is arranged on the upper side of the conveying belt; a scraping unit is arranged at the bottom of one end of the conveying belt.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a belt conveying equipment based on a permanent magnet motor. Background Art

[0002] The material thickness sensor on the outside of a belt conveyor requires adjustment when transporting different materials. Existing adjustment methods are cumbersome and have low efficiency and accuracy. When conveying granular materials, a large number of particles often adhere to the back of the belt. During the conveyor process, due to factors such as the belt's movement and vibration, these particles can fall to the ground, causing a large amount of material to scatter underneath the belt, affecting environmental cleanliness and wasting material.

[0003] Currently, conventional belt conveyors often use three-phase asynchronous motors to operate at a constant speed through reducers, hydraulic couplings, etc. This drive method has a relatively complex structure, and there is much room for improvement in energy consumption, mechanical wear and noise under no-load and low-load conditions.

[0004] Therefore, a belt conveyor device based on a permanent magnet motor is needed to solve the above technical problems. Utility Model Content

[0005] The utility model aims to solve the technical problems existing in the prior art and provides a belt conveyor device based on a permanent magnet motor.

[0006] The technical solution of the utility model for solving the above technical problems is as follows: a belt conveyor equipment based on a permanent magnet motor includes a frame, a variable frequency motor and multiple transmission units are installed on the frame, the transmission unit includes a rotating shaft, a sprocket, and a conveying roller, the rotating shaft is rotatably connected to the frame, the conveying roller and the sprocket are fixedly sleeved on the outside of the rotating shaft, the sprocket and the variable frequency motor are both located on the outside of the frame, a driving wheel is installed on the output shaft of the variable frequency motor, a conveying chain is connected between the driving wheel and the multiple sprockets, and a conveyor belt is connected between the multiple conveying rollers; a sensor adjustment unit is provided on the upper side of the conveyor belt; a scraper unit is provided at the bottom of one end of the conveyor belt.

[0007] Preferably, the above-mentioned belt conveyor equipment based on a permanent magnet motor, wherein the sensor adjustment unit includes a U-shaped bracket, an adjusting bolt, and a thickness sensor, a threaded hole is provided on the top of the U-shaped bracket, an external thread is provided on the outside of the adjusting bolt, the adjusting bolt is inserted into the threaded hole, a through hole is passed through the inside of the adjusting bolt, and the thickness sensor is inserted into the through hole.

[0008] Preferably, the above-mentioned belt conveyor equipment based on a permanent magnet motor, wherein the sensor adjustment unit also includes a pull rod, a guide sleeve is provided on the side of the adjusting bolt, the guide sleeve is connected to the through hole, one end of the pull rod is inserted into the guide sleeve, a tension spring is connected between the pull rod and the guide sleeve, and a second clamping pad is provided at the end of the pull rod, and the second clamping pad abuts against the thickness sensor.

[0009] Preferably, in the above-mentioned belt conveyor device based on a permanent magnet motor, a first clamping pad is fixed inside the through hole, and the first clamping pad is directly opposite to the second clamping pad.

[0010] Preferably, in the above-mentioned belt conveyor equipment based on a permanent magnet motor, the guide sleeve is perpendicular to the through hole.

[0011] Preferably, the above-mentioned belt conveyor equipment based on permanent magnet motor, wherein the bottom of the frame is fixed with a support leg, the scraper unit includes a cross bar, a brush rod, and a connecting rod, the cross bar is fixed on the support leg, the brush rod is hinged to the cross bar, the upper end of the brush rod is fixed with a brush, the brush is in contact with the bottom of one end of the conveyor belt, and the two ends of the connecting rod are connected to the brush rod and the cross bar.

[0012] Preferably, the above-mentioned belt conveyor equipment based on a permanent magnet motor, wherein a slide groove is provided on the upper side of the cross bar, a slider is slidably connected inside the slide groove, an elastic buffer component is provided in the slide groove, one end of the connecting rod is hinged to the upper end of the brush rod, and the other end of the connecting rod is hinged to the slider.

[0013] Preferably, the above-mentioned belt conveyor equipment based on a permanent magnet motor, wherein the elastic buffer assembly includes a compression spring and a guide rod, at least two guide rings are fixed inside the slide groove, the guide rod is slidably inserted into the guide ring, and a retaining ring is fixed outside the guide rod, one end of the compression spring abuts against the retaining ring, and the other end of the compression spring abuts against the guide ring.

[0014] Preferably, in the above-mentioned belt conveyor equipment based on a permanent magnet motor, one end of the guide rod is provided with an arc ball head, the arc ball head is made of rubber, and the arc ball head abuts against the slider.

[0015] Preferably, in the above-mentioned belt conveyor equipment based on a permanent magnet motor, a buffer pad is provided at the other end of the guide rod.

[0016] The beneficial effects of the utility model are:

[0017] 1. When adjusting the position of the thickness sensor of the utility model, first pull the pull rod backward. At this time, the first clamping pad and the second clamping pad release the thickness sensor, and the thickness sensor can be moved downward or upward. First, roughly adjust its height position, and then release the pull rod. The first clamping pad and the second clamping pad clamp the thickness sensor and fix it. Then, the position height of the thickness sensor can be changed by rotating the adjusting bolt, thereby achieving the purpose of precise adjustment and being more efficient.

[0018] 2. When the conveyor belt of the utility model is in operation, the particles adhering to the conveyor belt can be scraped off by the brush, and the scraped particles fall to the same place for easy collection, thereby preventing the material particles from scattering to the bottom of the conveyor belt.

[0019] 3. The utility model adopts a variable frequency motor to simplify the structure of the traditional belt conveyor drive system and reduce the power consumption, mechanical wear and noise of the traditional constant speed belt conveyor under no-load and low-load conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a structural diagram of the sensor adjustment unit;

[0022] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0023] Figure 4 It is a structural schematic diagram of the scraping unit;

[0024] Figure 5 Schematic diagram of the internal connection structure of the chute.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 1. Frame, 2. Support legs, 3. Conveyor belt, 4. Rotating shaft, 5. Sprocket, 6. Conveyor roller, 7. Frequency conversion motor, 8. Sensor adjustment unit, 81. U-shaped bracket, 82. Adjusting stud, 83. Thickness sensor, 84. Pull rod, 85. Tension spring, 86. Guide sleeve, 87. Through hole, 88. First clamping pad, 89. Second clamping pad, 810. Threaded hole, 9. Scraper unit, 91. Cross bar, 92. Slide groove, 93. Slider, 94. Connecting rod, 95. Compression spring, 96. Guide rod, 97. Brush rod, 98. Brush, 99. Buffer pad, 910. Guide ring, 911. Retaining ring, 10. Conveyor chain. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] like Figure 1 As shown, a belt conveyor system based on a permanent magnet motor comprises a frame 1 with legs 2 fixed to the bottom. A variable-frequency motor 7 and multiple transmission units are mounted on the frame 1. The use of a variable-frequency motor simplifies the structure of the traditional belt conveyor drive system and reduces energy consumption, mechanical wear, and noise in conventional fixed-speed belt conveyors under no-load and low-load conditions.

[0029] The transmission unit includes a rotating shaft 4, sprockets 5, and conveyor rollers 6. The rotating shaft 4 is rotatably connected to the frame 1. Each rotating shaft 4 is mounted parallel to the frame 1. The conveyor rollers 6 and sprockets 5 are fixedly mounted on the exterior of the rotating shaft 4. The sprockets 5 and the variable frequency motor 7 are both located outside the frame 1. A driving pulley is mounted on the output shaft of the variable frequency motor 7. A conveyor chain 10 is connected between the driving pulley and the multiple sprockets 5. The variable frequency motor 7 provides power to rotate the driving pulley, which in turn drives the sprockets 5 through the conveyor chain 10, and in turn drives the rotating shaft 4 and conveyor rollers 6. A conveyor belt 3 is connected between the multiple conveyor rollers 6. Rotation of the conveyor rollers 6 drives the conveyor belt 3.

[0030] like Figure 1 、 Figure 2 、 Figure 3 As shown, a sensor adjustment unit 8 is provided on the upper side of the conveyor belt 3. The sensor adjustment unit 8 includes a U-shaped bracket 81, an adjusting bolt 82, a thickness sensor 83, and a pull rod 84. The two sides of the U-shaped bracket 81 are fixed to the two sides of the frame 1. A threaded hole 810 is provided on the top of the U-shaped bracket 81, and an external thread is provided on the outer side of the adjusting bolt 82. The adjusting bolt 82 is inserted into the threaded hole 810, and the two are threadedly connected. A through hole 87 is passed through the interior of the adjusting bolt 82, and the thickness sensor 83 is inserted into the through hole 87, and the lower end of the thickness sensor 83 extends to the outside of the through hole 87. The thickness sensor 83 is used to detect the thickness of the material accumulation on the upper side of the conveyor belt 3. A guide sleeve 86 is provided on the side of the adjusting bolt 82. The guide sleeve 86 is connected to the through hole 87, and the guide sleeve 86 is perpendicular to the through hole 87. One end of the pull rod 84 is inserted into the guide sleeve 86. A tension spring 85 is connected between the pull rod 84 and the guide sleeve 86. A second clamping pad 89 is provided at the end of the pull rod 84. Under the action of the tension spring 85, the second clamping pad 89 abuts against the thickness sensor 83. A first clamping pad 88 is fixed inside the through hole 87. The first clamping pad 88 and the second clamping pad 89 are directly opposite to each other, and the thickness sensor 83 is clamped and fixed by the first clamping pad 88 and the second clamping pad 89.

[0031] When adjusting the thickness sensor 83, first pull the pull rod 84 backward. At this time, the first clamping pad 88 and the second clamping pad 89 release the thickness sensor 83, and the thickness sensor 83 can be moved downward or upward. First, roughly adjust its height position, and then loosen the pull rod 84. The first clamping pad 88 and the second clamping pad 89 clamp the thickness sensor 83 and fix it. Then, the position height of the thickness sensor 83 is changed by rotating the adjusting bolt 82, thereby achieving the purpose of precise adjustment.

[0032] like Figure 1 、 Figure 4 、 Figure 5 As shown, a scraper unit 9 is provided at the bottom of one end of the conveyor belt 3. The scraper unit 9 includes a crossbar 91, a brush rod 97, and a connecting rod 94. The crossbar 91 is fixed to the support leg 2. The brush rod 97 is hinged to the crossbar 91. A brush 98 is fixed to the upper end of the brush rod 97, and the brush 98 abuts against the bottom of one end of the conveyor belt 3. A chute 92 is provided on the upper side of the crossbar 91. A slider 93 is slidably connected to the interior of the chute 92. An elastic buffer assembly is provided within the chute 92. The ends of the connecting rod 94 are connected to the brush rod 97 and the crossbar 91. Specifically, one end of the connecting rod 94 is hinged to the upper end of the brush rod 97, and the other end of the connecting rod 94 is hinged to the slider 93. The elastic buffer assembly includes a compression spring 95 and a guide rod 96. Two guide rings 910 are fixed to the interior of the chute 92, and the guide rod 96 is slidably inserted into the guide rings 910. A retaining ring 911 is fixed to the exterior of the guide rod 96. One end of the compression spring 95 abuts against the retaining ring 911, while the other end of the compression spring 95 abuts against the guide ring 910. A rubber-made arc-shaped ball head is mounted on one end of the guide rod 96, which abuts against the slider 93. Under the elastic force of the compression spring 95, the arc-shaped ball head at the front end of the guide rod 96 applies thrust to the slider 93, thereby buffering the resistance of the brush 98 and brush rod 97 when the conveyor belt 3 rotates counterclockwise. When the conveyor belt 3 rotates counterclockwise, the conveyor belt 3 applies a rightward thrust to the brush 98, which the compression spring 95 effectively cushions. Furthermore, a cushion pad 99 is mounted on the other end of the guide rod 96. When the guide rod 96 reaches its rightmost end, the cushion pad 99 contacts the right side wall of the chute 92, providing a cushioning effect. The brush 98 scrapes particles adhering to the conveyor belt 3, where the scraped particles fall to a single location for easy collection.

[0033] A frequency converter is connected to the front end of the variable frequency motor, which controls its operation. The variable frequency motor dynamically adjusts its output power based on the thickness of the material accumulated on the conveyor belt and the torque output information from the frequency converter. This control method is divided into two main modes: material determination mode and output torque control mode. The material control mode primarily uses material thickness as the control target value for PID control. When the actual material thickness exceeds the set target value, the belt speed is increased to ensure the material thickness returns to the target value. Conversely, when the actual material thickness falls below the target value, the belt speed is reduced. The output torque control mode primarily uses the internal torque output of the frequency converter as a supplementary control basis. If thickness sensor 83 fails, the frequency converter will operate in torque output mode, using the actual frequency converter motor output torque as the target value for dynamic PID control. When the output torque exceeds the set torque, the belt speed is increased; otherwise, it is reduced. By incorporating the material and motor torque conditions of the belt conveyor into the speed control of the variable frequency motor, the speed of the belt conveyor can be dynamically adjusted and controlled, keeping the belt conveyor speed at a reasonable and relatively low speed, reducing the energy consumption, mechanical wear and noise of the belt conveyor under no-load and low-load conditions.

[0034] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and 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 the specific circumstances.

[0036] The above describes an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent application of the present invention.

Claims

1. A belt conveyor device based on a permanent magnet motor, characterized in that: The invention comprises a frame (1), wherein a variable frequency motor (7) and a plurality of transmission units are installed on the frame (1), wherein the transmission unit comprises a rotating shaft (4), a sprocket (5), and a transmission roller (6), wherein the rotating shaft (4) is rotatably connected to the frame (1), the transmission roller (6) and the sprocket (5) are fixedly sleeved on the outside of the rotating shaft (4), the sprocket (5) and the variable frequency motor (7) are both located on the outside of the frame (1), a driving wheel is installed on the output shaft of the variable frequency motor (7), a transmission chain (10) is connected between the driving wheel and the plurality of sprockets (5), and a conveyor belt (3) is connected between the plurality of conveyor rollers (6); a sensor adjustment unit (8) is provided on the upper side of the conveyor belt (3); and a scraper unit (9) is provided at the bottom of one end of the conveyor belt (3).

2. The belt conveyor device based on a permanent magnet motor according to claim 1, characterized in that: The sensor adjustment unit (8) comprises a U-shaped bracket (81), an adjustment bolt (82), and a thickness sensor (83); a threaded hole (810) is provided on the top of the U-shaped bracket (81); an external thread is provided on the outer side of the adjustment bolt (82); the adjustment bolt (82) is inserted into the threaded hole (810); a through hole (87) is passed through the interior of the adjustment bolt (82); and the thickness sensor (83) is inserted into the through hole (87).

3. The belt conveyor device based on a permanent magnet motor according to claim 2, characterized in that: The sensor adjustment unit (8) also includes a pull rod (84), a guide sleeve (86) is provided on the side of the adjustment bolt (82), the guide sleeve (86) is connected to the through hole (87), one end of the pull rod (84) is inserted into the guide sleeve (86), a tension spring (85) is connected between the pull rod (84) and the guide sleeve (86), and a second clamping pad (89) is provided at the end of the pull rod (84), and the second clamping pad (89) abuts against the thickness sensor (83).

4. The belt conveyor device based on a permanent magnet motor according to claim 3 is characterized in that: A first clamping pad (88) is fixed inside the through hole (87), and the first clamping pad (88) is directly opposite to the second clamping pad (89).

5. The belt conveyor device based on a permanent magnet motor according to claim 3, characterized in that: The guide sleeve (86) is perpendicular to the through hole (87).

6. The belt conveyor device based on a permanent magnet motor according to claim 1, characterized in that: The bottom of the frame (1) is fixed with a support leg (2), and the scraper unit (9) comprises a cross bar (91), a brush rod (97), and a connecting rod (94). The cross bar (91) is fixed on the support leg (2), the brush rod (97) is hinged to the cross bar (91), a brush (98) is fixed to the upper end of the brush rod (97), and the brush (98) abuts against the bottom of one end of the conveyor belt (3). The two ends of the connecting rod (94) are connected to the brush rod (97) and the cross bar (91).

7. The belt conveyor device based on a permanent magnet motor according to claim 6, characterized in that: A slide groove (92) is provided on the upper side of the cross bar (91), and a slider (93) is slidably connected inside the slide groove (92). An elastic buffer component is provided in the slide groove (92), one end of the connecting rod (94) is hinged to the upper end of the brush rod (97), and the other end of the connecting rod (94) is hinged to the slider (93).

8. The belt conveyor device based on a permanent magnet motor according to claim 7, characterized in that: The elastic buffer assembly includes a compression spring (95) and a guide rod (96). At least two guide rings (910) are fixed inside the slide groove (92). The guide rod (96) is slidably inserted into the guide ring (910). A retaining ring (911) is fixed outside the guide rod (96). One end of the compression spring (95) abuts against the retaining ring (911), and the other end of the compression spring (95) abuts against the guide ring (910).

9. The belt conveyor device based on a permanent magnet motor according to claim 8, characterized in that: One end of the guide rod (96) is provided with an arc ball head, the arc ball head is made of rubber material, and the arc ball head abuts against the slider (93).

10. The belt conveyor device based on a permanent magnet motor according to claim 9, characterized in that: The other end of the guide rod (96) is provided with a buffer pad (99).

Images