Outer rotor motor tobacco distribution vehicle

Abstract

This utility model discloses an external rotor motor tobacco cloth cart, comprising two parallel guide rails and a vehicle body located above the guide rails. Motor housings are fixedly connected to both sides of the vehicle body, and external rotor motors are installed in each of the motor housings on both sides of the vehicle body. The inner stator shaft of the external rotor motor is fixed to the motor housing. A power shaft is rotatably connected to the vehicle body, and power guide wheels are fixedly connected to the outer rotor housing of the external rotor motor, rotatably connected to both ends of the power shaft. A driven shaft is rotatably connected to the vehicle body, and driven guide wheels are rotatably connected to both ends of the driven shaft. The power guide wheels and driven guide wheels are located on the guide rails. This utility model achieves a symmetrical drive structure by utilizing the small size and high torque of the external rotor motor; moreover, the external rotor motors at both ends of the power shaft are driven independently, avoiding mutual interference between the two motors and reducing the torque and shear force generated on the shaft during the operation of the two sets of motors.

Description

Technical Field

[0001] This utility model relates to the field of tobacco fabric making vehicle technology, specifically to an external rotor motor tobacco fabric making vehicle. Background Technology

[0002] Tobacco spreading carts are key pieces of equipment in the tobacco processing industry used for the uniform distribution and conveying of tobacco materials. They are primarily used for spreading tobacco materials such as shredded tobacco and leaves, and are an important component of tobacco processing production lines or storage systems. Through reciprocating motion or movement along a specific trajectory, the tobacco spreading cart evenly lays tobacco materials (such as shredded tobacco and leaves) onto storage tanks, silos, or conveyor belts, ensuring continuous and consistent material distribution and avoiding localized accumulation or voids. This reduces manual intervention, improves the continuity and efficiency of the production line, and is particularly suitable for large-scale tobacco processing scenarios.

[0003] Currently, most fabric laying trolley mechanisms in various industries are driven by ordinary geared motors that move the trolley body back and forth on guide rails. The trolley body is generally equipped with a conveyor mechanism or other devices that carry goods. Under full load, the load is usually quite large. The power motor is installed on one side of the fabric laying trolley. Because high torque is required to drive the body under full load, traditional fabric laying trolleys often use geared motors with large power and reduction ratios as the power output. These motors are large in size and weight, often weighing tens or hundreds of kilograms. When they are placed on one side of the body for a long time, after a certain period of time, uneven load will cause local wear, fatigue, and vibration problems in the bearings and shaft of the power shaft. The shaft will generate bending stress and fatigue failure. The end with a larger load will bear greater contact pressure, causing uneven wear of the journal. The bearing will wear more rapidly due to unilateral overload, resulting in a significant reduction in bearing life. Moreover, such equipment is usually large in size and has limited space, making maintenance difficult and costly. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems and provide an external rotor motor tobacco cloth cart.

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

[0006] An external rotor motor tobacco fabric cart includes two parallel guide rails and a vehicle body located above the guide rails. A material conveying mechanism is installed on the vehicle body. Motor housings are fixedly connected to both sides of the vehicle body, and an external rotor motor is installed in each of the motor housings on both sides of the vehicle body. The inner stator shaft of the external rotor motor is fixed to the motor housing. A power shaft is rotatably connected to the vehicle body, and a power guide wheel is fixedly connected to the outer rotor housing of the external rotor motor. The power guide wheel is rotatably connected to both ends of the power shaft. A driven shaft is rotatably connected to the vehicle body, and driven guide wheels are rotatably connected to both ends of the driven shaft. The power guide wheel and the driven guide wheel are located on the guide rails.

[0007] Furthermore, both the driving guide wheel and the driven guide wheel are provided with guide steps, which are located inside the two guide rails.

[0008] Furthermore, the external rotor motor includes an external rotor housing and an inner stator shaft disposed within the external rotor housing. An inner stator magnetic pole is installed on the inner stator shaft, and a permanent magnet magnetic pole is installed on the inner wall of the external rotor housing. A connecting flange is fixedly connected to the external rotor housing, and the connecting flange is fixedly connected to the power guide wheel.

[0009] Furthermore, the end of the power shaft is provided with a first optical shaft and a first threaded shaft. The first optical shaft is rotatably connected to the power guide wheel through a first double-row tapered roller bearing. A first limiting nut is threadedly connected to the first threaded shaft and abuts against the end of the first double-row tapered roller bearing away from the outer rotor motor. The end of the power shaft is bolted to a first limiting sleeve, which abuts against one end of the power guide wheel.

[0010] Furthermore, the driven shaft is provided with a second optical shaft and a second threaded shaft at both ends. The second optical shaft is rotatably connected to the driven guide wheel through a second double-row tapered roller bearing. The second threaded shaft is connected to a second limiting nut through a thread, and the second limiting nut abuts against one end of the second double-row tapered roller bearing. The driven guide wheel is connected to a second limiting sleeve through a bolt on the side away from the limiting nut. The second limiting sleeve abuts against the side end of the driven wheel.

[0011] Furthermore, the connecting flange includes a first flange plate and a second flange plate. The first flange plate is fixed on the outer rotor housing, and the second flange plate is fixed on the power wheel. The first flange plate and the second flange plate are arranged alternately.

[0012] This utility model provides an external rotor motor tobacco feeding cart, which has the following advantages: Utilizing the small size and high torque of the external rotor motor, it can be directly mounted on the guide wheels on both sides via flanges to provide kinetic energy, thus achieving symmetrical drive structure. This avoids the problems of localized wear, fatigue, and vibration of bearings and shafts caused by unilateral overload. Furthermore, the use of double-row tapered roller bearings with double raceways mounted on the guide wheels allows each guide wheel to rotate independently with the motor, reducing the torque and shear force generated on the shaft during the operation of two sets of motors, and greatly extending the shaft's service life. Simultaneously, the external rotor motor drive simplifies the structure and reduces the risk of tobacco weevils breeding. Attached Figure Description

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings:

[0014] Figure 1 A schematic diagram of the structure of an external rotor motor tobacco cloth cart provided by this utility model;

[0015] Figure 2 This utility model provides a schematic diagram of the internal structure of an external rotor motor tobacco fabric cart.

[0016] Figure 3 A cross-sectional structural diagram of the interface between the external rotor motor and the power shaft in an external rotor motor tobacco fabric cart provided by this utility model;

[0017] Figure 4 An exploded schematic diagram of the structure at the interface between the external rotor motor and the power shaft in an external rotor motor tobacco fabric cart provided by this utility model;

[0018] Figure 5 An exploded view of the structure at the junction of the driven shaft and the driven guide wheel in an external rotor motor tobacco cloth cart provided by this utility model.

[0019] The following are the labeling symbols in the diagram: 1. Guide rail; 2. Vehicle body; 3. Material conveying mechanism; 4. Motor housing; 5. External rotor motor; 51. Inner stator shaft; 52. External rotor housing; 53. Inner stator pole; 54. Permanent magnet pole; 55. Connecting flange; 551. First flange plate; 552. Second flange plate; 6. Power shaft; 61. First optical shaft; 62. First threaded shaft; 63. First double-row tapered roller bearing; 64. First limit nut; 65. First limit sleeve; 7. Power guide wheel; 71. Guide step; 8. Driven shaft; 81. Driven guide wheel; 82. Second double-row tapered roller bearing; 83. Second limit nut; 84. Second limit sleeve. Detailed Implementation

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0022] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0023] like Figures 1-5 As shown, an external rotor motor tobacco fabric cart includes two parallel guide rails 1 and a vehicle body 2 located above the guide rails 1. A material conveying mechanism 3 is provided on the vehicle body 2. Motor housings 4 are fixedly connected to both sides of the vehicle body 2. An external rotor motor 5 is installed in each of the motor housings 4 on both sides of the vehicle body 2. The inner stator shaft 51 of the external rotor motor 5 is fixed to the motor housing 4. A power shaft 6 is rotatably connected to the vehicle body 2. A power guide wheel 7 is fixedly connected to the outer rotor housing 52 of the external rotor motor 5. The power guide wheel 7 is rotatably connected to both ends of the power shaft 6. A driven shaft 8 is rotatably connected to the vehicle body 2. Driven guide wheels 81 are rotatably connected to both ends of the driven shaft 8. The power guide wheel 7 and the driven guide wheel 81 are located on the guide rails 1.

[0024] By adopting the above technical solution, the small size and high torque of the external rotor motor 5 are utilized to drive the rotation of the power guide wheel 7, which in turn drives the vehicle body 2. By mounting the external rotor motor 5 at both ends of the power shaft 6, a symmetrical drive structure is achieved, avoiding localized wear, fatigue, and vibration problems in the bearings and shaft caused by unilateral overload. Furthermore, the external rotor motor 5, unlike the internal rotor motor, lacks heat dissipation fins on its outer casing, resulting in a smooth and flat external surface that prevents tobacco insects from breeding in the fin gaps. The external rotor motor 5 directly drives the power guide wheel 7, and the rotation of the power guide wheel 7 in conjunction with the rotation of the power shaft 6 allows the external rotor motors 5 at both ends of the power shaft 6 to drive independently, avoiding interference between the two motors and reducing the torque and shear force generated on the shaft during operation, thus significantly extending the shaft's service life. Specifically, the material conveying mechanism 3 is a belt conveyor used for conveying tobacco raw materials.

[0025] Specifically, both the driving guide wheel 7 and the driven guide wheel 81 are equipped with guide steps 71, which are located inside the two guide rails 1. These guide steps cooperate with the guide rails 1 and provide limiting, preventing the vehicle body 2 from derailing. Specifically, the guide rails 1 are composed of multiple sections, with channel steel fixedly connected to the bottom of the guide rails 1 for support.

[0026] Specifically, the external rotor motor 5 includes an external rotor housing 52 and an inner stator shaft 51 disposed within the external rotor housing 52. Inner stator magnetic poles 53 are mounted on the inner stator shaft 51, and permanent magnet poles 54 are mounted on the inner wall of the external rotor housing 52. A connecting flange 55 is fixedly connected to the external rotor housing 52, and the connecting flange 55 is fixedly connected to the power guide wheel 7. When energized, the permanent magnet poles 54 rotate due to magnetic pull following the magnetic field of the inner stator magnetic poles 53. Since the permanent magnet poles 54 are fixedly installed within the external rotor housing 52, they drive the connecting flange 55 connected to the external rotor housing 52 to rotate, thereby driving the power guide wheel 7 to rotate.

[0027] Specifically, the end of the power shaft 6 is provided with a first optical shaft 61 and a first threaded shaft 62. The first optical shaft 61 is rotatably connected to the power guide wheel 7 via a first double-row tapered roller bearing 63. A first limiting nut 64 is threadedly connected to the first threaded shaft 62, and the first limiting nut 64 abuts against the end of the first double-row tapered roller bearing 63 away from the outer rotor motor 5. The end of the power shaft 6 is bolted to a first limiting sleeve 65, which abuts against one end of the power guide wheel 7. By installing the first double-row tapered roller bearing 63 inside the power guide wheel 7, the first double-row tapered roller bearing 63 itself can withstand large radial and axial loads; and the rotational fit formed by the bearing allows each power guide wheel 7 to rotate independently with the motor, reducing the torque and shear force generated on the shaft when the two sets of motors are running, greatly extending the service life of the shaft. Specifically, the first limiting nuts 64 are used in pairs, side by side, tightly against each other, thereby preventing loosening.

[0028] Specifically, the driven shaft 8 has a second optical shaft and a second threaded shaft at both ends. The second optical shaft is rotatably connected to the driven guide wheel 81 via a second double-row tapered roller bearing 82. A second limiting nut 83 is threadedly connected to the second threaded shaft, and the second limiting nut 83 abuts against one end of the second double-row tapered roller bearing 82. A second limiting sleeve 84 is bolted to the side of the driven guide wheel 81 away from the limiting nut, and the second limiting sleeve 84 abuts against the side end of the driven wheel. The limiting sleeve restricts the axial movement of the driven guide wheel 81 and the first double-row tapered roller bearing 63. The limiting nut can axially limit the driven guide wheel 81, and rotating the limiting nut can adjust the axial position of the driven guide wheel 81, thereby keeping multiple driven guide wheels 81 in sync.

[0029] Specifically, the connecting flange 55 includes a first flange plate 551 and a second flange plate 552. The first flange plate 551 is fixed to the outer rotor housing 52, and the second flange plate 552 is fixed to the drive wheel. The first flange plate 551 and the second flange plate 552 are arranged in an alternating manner. By setting the connecting flange 55 as an alternating flange, the flange plates at both ends of the flange are arranged in an alternating manner, which facilitates the installation of connecting bolts on the flange plates.

[0030] The parts not covered in this technical solution can be implemented using existing technologies.

[0031] The foregoing has shown and described the basic principles, main features, and characteristics of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model includes the appended claims and their equivalents.

Claims

1. A tobacco fabric carrier with an external rotor motor, characterized in that: The system includes two parallel guide rails (1) and a vehicle body (2) located above the guide rails (1). A material conveying mechanism (3) is provided on the vehicle body (2). Motor housings (4) are fixedly connected to both sides of the vehicle body (2). An external rotor motor (5) is installed in each of the motor housings (4) on both sides of the vehicle body (2). The inner stator shaft (51) of the external rotor motor (5) is fixed on the motor housing (4). A power shaft (6) is rotatably connected to the vehicle body (2). A power guide wheel (7) is fixedly connected to the outer rotor housing (52) of the external rotor motor (5). The power guide wheel (7) is rotatably connected to both ends of the power shaft (6). A driven shaft (8) is rotatably connected to the vehicle body (2). Driven guide wheels (81) are rotatably connected to both ends of the driven shaft (8). The power guide wheel (7) and the driven guide wheel (81) are located on the guide rails (1).

2. The tobacco fabric feeding cart with an external rotor motor according to claim 1, characterized in that: Both the power guide wheel (7) and the driven guide wheel (81) are provided with guide steps (71), which are located inside the two guide rails (1).

3. The tobacco spreading cart with an external rotor motor according to claim 1, characterized in that: The external rotor motor (5) includes an external rotor housing (52) and an inner stator shaft (51) disposed inside the external rotor housing (52). An inner stator magnetic pole (53) is installed on the inner stator shaft (51), and a permanent magnet magnetic pole (54) is installed on the inner wall of the external rotor housing (52). A connecting flange (55) is fixedly connected to the external rotor housing (52), and the connecting flange (55) is fixedly connected to the power guide wheel (7).

4. A tobacco fabric feeding cart with an external rotor motor according to any one of claims 1-3, characterized in that: The end of the power shaft (6) is provided with a first optical shaft (61) and a first threaded shaft (62). The first optical shaft (61) is rotatably connected to the power guide wheel (7) through a first double-row tapered roller bearing (63). A first limiting nut (64) is threadedly connected to the first threaded shaft (62), and the first limiting nut (64) abuts against the end of the first double-row tapered roller bearing (63) away from the outer rotor motor (5). The end of the power shaft (6) is bolted to a first limiting sleeve (65), and the first limiting sleeve (65) abuts against one end of the power guide wheel (7).

5. A tobacco fabric feeding cart with an external rotor motor according to any one of claims 1-3, characterized in that: The driven shaft (8) is provided with a second optical shaft and a second threaded shaft at both ends. The second optical shaft is rotatably connected to the driven guide wheel (81) through a second double-row tapered roller bearing (82). The second threaded shaft is connected to a second limiting nut (83) through a thread, and the second limiting nut (83) abuts against one end of the second double-row tapered roller bearing (82). The driven guide wheel (81) is connected to a second limiting sleeve (84) by bolts on the side away from the limiting nut. The second limiting sleeve (84) abuts against the side end of the driven wheel.

6. A tobacco fabric feeding cart with an external rotor motor according to claim 3, characterized in that: The connecting flange (55) includes a first flange plate (551) and a second flange plate (552). The first flange plate (551) is fixed on the outer rotor housing (52), and the second flange plate (552) is fixed on the power guide wheel. The first flange plate (551) and the second flange plate (552) are arranged alternately.

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