Gear structure gear motor

Abstract

A gear structure gear motor comprises a motor and an output flange. A speed reducing mechanism is arranged in the output flange; the motor is detachably connected with the output flange, and the output end of the motor is inserted into the output flange and connected with the speed reducing mechanism in a meshed mode. The gear speed reduction structure comprises a first speed reduction gear piece, a second speed reduction gear piece and a gear output piece, the three speed reduction gear pieces are arranged in a staggered mode in the longitudinal space, the length of the output flange in the horizontal direction is shortened, and installation of the speed reduction motor is more convenient. And meanwhile, through three-stage continuous speed reduction, larger torque can be provided in a narrow output flange for operation of a conveying line.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and in particular to a gear-structured speed reducer motor. Background Technology

[0002] A geared motor is an integrated unit combining a speed reducer and a motor. This type of integrated unit is also commonly referred to as a geared motor or geared motor. It is typically used in cargo transportation or power drive applications. When used on conveyor lines, geared motors are usually assembled with various conveyor rollers to provide power to the rollers, enabling the corresponding conveyor line to achieve its transportation function.

[0003] Due to the large number of components on the conveyor line, the power section of the conveyor line becomes bulky when the conveyor rollers are paired with a geared motor. For production lines with relatively compact operations, this means sacrificing more production space to accommodate the geared motor. Therefore, a compact and small-sized geared motor is urgently needed. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this invention is to propose a gear-structured geared motor that reduces the size of the geared motor, thereby solving the problem of difficult installation of the geared motor in compact conveyor lines.

[0005] To achieve this objective, the present invention adopts the following technical solution: a gear-structured reduction motor, comprising a motor and an output flange;

[0006] A speed reduction mechanism is installed inside the output flange;

[0007] The motor is detachably connected to the output flange, and the output end of the motor is inserted into the output flange and engaged with the reduction mechanism.

[0008] The deceleration mechanism includes a first reduction gear component, a second reduction gear component, and a gear output component;

[0009] The first reduction gear includes a first shaft and a first gear and a second gear sleeved on the first shaft, wherein the diameter of the first gear is larger than the diameter of the second gear, and the first gear meshes with the sixth gear at the output end of the motor;

[0010] The second reduction gear includes a second shaft and a third gear and a fourth gear sleeved on the second shaft, wherein the diameter of the third gear is larger than the diameter of the fourth gear and the second gear, and the second gear meshes with the third gear;

[0011] The gear output component includes a third shaft and a fifth gear mounted on one end of the third shaft. The diameter of the fifth gear is larger than that of the fourth gear. The fourth gear meshes with the fifth gear. The free end of the third shaft passes through the output flange.

[0012] In the horizontal direction, the first reduction gear is located above the motor output shaft, the second reduction gear is located between the motor output shaft and the first reduction gear, and the gear output component is located between the first reduction gear and the second reduction gear.

[0013] Preferably, the first gear, the second gear, the third gear, the fourth gear, the fifth gear, and the sixth gear are all helical gears.

[0014] Preferably, the thickness of the second gear, the fourth gear, and the sixth gear is greater than the thickness of the first gear, the third gear, and the fifth gear.

[0015] Preferably, the first gear and the sixth gear constitute the first stage of reduction. In the first stage of reduction, the gear module is 1.25, the rack helix angle of the first gear and the sixth gear is 20°, the gear ratio is 45 / 24, and the center distance is 46.

[0016] The second gear and the third gear form a two-stage reduction gear. In the two-stage reduction gear, the gear module is 1.25, the rack helix angle of the second gear and the third gear is 12°, the gear ratio is 57 / 23, and the center distance is 50.5.

[0017] The fourth and fifth gears constitute a three-stage reduction. In the three-stage reduction, the gear module is 1.75, the rack helix angle of the fifth and fourth gears is 7°, the gear ratio is 56 / 11, and the center distance is 59.

[0018] Preferably, the output flange has an output through hole, the third shaft is fitted with a first bearing, the first bearing is installed in the output through hole, and the free end of the third shaft passes through the output through hole and protrudes from the output flange;

[0019] The side of the motor facing the output flange is the mounting surface, and a first bearing hole and a second bearing hole are respectively provided on the mounting surface;

[0020] The output flange is provided with a third bearing hole and a fourth bearing hole respectively. The third bearing hole and the first bearing hole are located on the same horizontal line, and the second bearing hole and the fourth bearing hole are located on the same horizontal line.

[0021] The two ends of the first shaft are respectively mounted in the third bearing hole and the first bearing hole via bearings;

[0022] The two ends of the second shaft are respectively mounted in the second bearing hole and the fourth bearing hole via bearings.

[0023] Preferably, the first bearing is a tapered roller bearing.

[0024] Preferably, the third shaft is further provided with a sealing ring, which is located at one end near the output through hole.

[0025] Preferably, the output flange is further provided with a vent hole, and the vent hole is detachably fitted with an exhaust plug.

[0026] One of the above technical solutions has the following advantages or beneficial effects: To meet the output torque requirements, the reduction mechanism of this utility model is equipped with a three-stage reduction system. The first stage reduction is a combination of the sixth gear and the first gear; the second stage reduction is a combination of the second gear and the third gear; and the third stage reduction is a combination of the fourth gear and the fifth gear. In this utility model, the gear reduction structure includes a first reduction gear component, a second reduction gear component, and a gear output component. The three reduction gear components are staggered in the longitudinal space, shortening the horizontal length of the output flange and making it easier to install the geared motor. Simultaneously, through continuous three-stage reduction, a greater torque can be provided within the narrow output flange to power the conveyor line. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0028] Figure 2 This is an exploded view of one embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the output flange in one embodiment of the present invention.

[0030] Among them: motor 1, sixth gear 11, first bearing hole 12, second bearing hole 13

[0031] Output flange 2, output through hole 21, third bearing hole 22, fourth bearing hole 23

[0032] First reduction gear 31, first shaft 311, first gear 312, second gear 313

[0033] Second reduction gear 32, second shaft 321, third gear 322, fourth gear 323

[0034] Gear output component 33, third shaft 331, fifth gear 332

[0035] 4. First bearing; 5. Sealing ring; 6. Exhaust plug; 7. Vent hole. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] like Figures 1-2 As shown, a geared motor includes a motor (1) and an output flange (2);

[0041] A speed reduction mechanism is provided inside the output flange (2);

[0042] The motor (1) is detachably connected to the output flange (2), and the output end of the motor (1) is inserted into the output flange (2) and engaged with the reduction mechanism.

[0043] The deceleration mechanism includes a first reduction gear (31), a second reduction gear (32), and a gear output component (33);

[0044] The first reduction gear component (31) includes a first shaft (311) and a first gear (312) and a second gear (313) sleeved on the first shaft (311), wherein the diameter of the first gear (312) is larger than the diameter of the second gear (313), and the first gear (312) meshes with the sixth gear (11) at the output end of the motor (1);

[0045] The second reduction gear component (32) includes a second shaft (321) and a third gear (322) and a fourth gear (323) sleeved on the second shaft (321), wherein the diameter of the third gear (322) is larger than the diameter of the fourth gear (323) and the second gear (313), and the second gear (313) meshes with the third gear (322);

[0046] The gear output component (33) includes a third shaft (331) and a fifth gear (332) mounted on one end of the third shaft (331). The diameter of the fifth gear (332) is larger than the diameter of the fourth gear (323). The fourth gear (323) meshes with the fifth gear (332). The free end of the third shaft (331) passes through the output flange (2).

[0047] In the horizontal direction, the first reduction gear (31) is located above the output shaft of the motor (1), the second reduction gear (32) is located between the output shaft of the motor (1) and the first reduction gear (31), and the gear output component (33) is located between the first reduction gear (31) and the second reduction gear (32).

[0048] In order to reduce the size of the geared motor, the existing flange is modified into an output flange (2), that is, a corresponding installation space is provided inside the flange to install the speed reduction mechanism.

[0049] To further reduce the size of the output flange (2), the number of teeth on the gears in the reduction mechanism is not very large, so the tooth ratio between the gear combinations is also relatively reduced. To meet the output torque requirements, a three-stage reduction mechanism is provided in this utility model. The first stage reduction is a combination of the sixth gear (11) and the first gear (312), the second stage reduction is a combination of the second gear (313) and the third gear (322), and the third stage reduction is a combination of the fourth gear (323) and the fifth gear (332). In this utility model, the gear reduction structure includes a first reduction gear (31), a second reduction gear (32), and a gear output component (33). The three reduction gears are staggered in the longitudinal space, which shortens the length of the output flange (2) in the horizontal direction and makes it easier to install the geared motor. At the same time, through the three-stage continuous reduction, a larger torque can be provided in the narrow output flange (2) for the operation of the conveyor line.

[0050] Preferably, the first gear (312), the second gear (313), the third gear (322), the fourth gear (323), the fifth gear (332), and the sixth gear (11) are all helical gears.

[0051] To further reduce the overall size of the output flange (2), the thickness of the gears in the reduction mechanism must be reduced. However, after reducing the gear thickness, the small gear will have difficulty withstanding the stress generated when driving the large gear to rotate, thus easily causing deformation. Therefore, in this utility model, the first gear (312), the second gear (313), the third gear (322), the fourth gear (323), the fifth gear (332), and the sixth gear (11) are all helical gears. The helical tooth design of the helical gears allows the tooth surface contact to gradually transition from one end to the other, reducing the impact and vibration during meshing. Moreover, the number of teeth participating in meshing at the same time increases, so that the load is shared by multiple teeth, significantly improving the overall load-bearing capacity. This ensures the normal operation of the gears.

[0052] Preferably, the thickness of the second gear (313), the fourth gear (323), and the sixth gear (11) is greater than the thickness of the first gear (312), the third gear (322), and the fifth gear (332).

[0053] Since the second gear (313), the fourth gear (323) and the sixth gear (11) are the transmission output during the deceleration transmission process, the thicker gears can provide a larger axial support area to offset the high axial force generated by the helix angle of the helical gear during transmission, reduce the local pressure of the first shaft (311), the second shaft (321) and the third shaft (331), and improve the overall structural strength of the deceleration mechanism.

[0054] Preferably, the first gear (312) and the sixth gear (11) constitute the first stage of reduction. In the first stage of reduction, the gear module is 1.25, the rack helix angle of the first gear (312) and the sixth gear (11) is 20°, the gear ratio is 45 / 24, and the center distance is 46.

[0055] The second gear (313) and the third gear (322) constitute a two-stage reduction. In the two-stage reduction, the gear module is 1.25. The rack helix angle of the second gear (313) and the third gear (322) is 12°, the gear ratio is 57 / 23, and the center distance is 50.5.

[0056] The fourth gear (323) and the fifth gear (332) constitute a three-stage reduction. In the three-stage reduction, the gear module is 1.75. The rack helix angle of the fourth gear (313) and the fifth gear (322) is 7°, the gear ratio is 56 / 11, and the center distance is 59.

[0057] The first two reduction stages use a module of 1.25, meeting the load-bearing requirements for low-to-medium speeds and medium torque within a compact structure. The third reduction stage increases the module to 1.75, directly addressing the contact and bending stresses during peak torque output by increasing tooth thickness and root strength. This "lightweight-to-heavy-load" design avoids material waste while ensuring the reliability of critical components.

[0058] The direct input speed of the motor (1) is relatively high. At this time, the first gear (312) and the sixth gear (11) in the first stage reduction can effectively reduce impact vibration and improve the smoothness of force transmission by meshing with a large helix angle of 20°. As the torque increases step by step, the helix angles of the second and third stage reductions are reduced to 12° and 7°, respectively. The reduction of the helix angle can significantly reduce the axial thrust generated by gear meshing (axial force is proportional to the tangent of the helix angle), thereby reducing the axial load on the bearing, simplifying the bearing selection and lubrication design, thereby reducing unnecessary equipment installation, and further reducing the volume of the output flange (2) while improving the stability of the force output.

[0059] Finally, by setting the corresponding gear ratio and center distance, the non-interference meshing of each gear can be avoided, and reasonable heat dissipation and lubrication space can be left inside the output flange (2) to avoid local temperature rise or oil film rupture caused by compact layout.

[0060] Preferably, the output flange (2) has an output through hole (21), the third shaft (331) is fitted with a first bearing (4), the first bearing (4) is installed in the output through hole (21), and the free end of the third shaft (331) passes through the output through hole (21) and protrudes from the output flange (2);

[0061] The side of the motor (1) facing the output flange (2) is the mounting surface, and a first bearing hole (12) and a second bearing hole (13) are respectively provided on the mounting surface;

[0062] The output flange (2) is provided with a third bearing hole (22) and a fourth bearing hole (23). The third bearing hole (22) and the first bearing hole (12) are located on the same horizontal line, and the second bearing hole (13) and the fourth bearing hole (23) are located on the same horizontal line.

[0063] The two ends of the first shaft (311) are respectively installed in the third bearing hole (22) and the first bearing hole (12) by bearings;

[0064] The two ends of the second shaft (321) are respectively installed in the second bearing hole (13) and the fourth bearing hole (23) by bearings.

[0065] like Figure 3 As shown, in order to further reduce the size of the geared motor, in this invention, a first bearing hole (12) and a second bearing hole (13) are opened on the side of the motor (1) facing the output flange (2) (mounting surface). At this time, no other fixing equipment is required, so as to reduce the number of devices installed in the output flange (2) and thus reduce the size of the output flange (2). In this invention, the sixth gear (11) in the first stage of reduction meshes with the first gear (312) at a large helical angle, which can meet the input stability requirements of high speed. However, the reaction force fed back to the mounting surface is also correspondingly larger. By opening the first bearing hole (12) and the second bearing hole (13) on the mounting surface, the force on the mounting surface is dispersed, and it can withstand a larger output torque during deceleration, maintaining the structural stability of the mounting surface and the motor (1).

[0066] Preferably, the first bearing (4) is a tapered roller bearing.

[0067] Because the speed output at the terminal is low due to the three-stage reduction in this invention, and the output of the third shaft (331) and the input of the motor (1) are not on the same horizontal line, excessive torque will cause the third shaft (331) or the output flange (2) to shift in the axial direction, thus affecting the stability of the overall structure. Therefore, in this invention, the first bearing (4) does not use the traditional deep groove ball bearing, but a tapered roller bearing. Tapered roller bearings have a large load-bearing capacity and a low limiting speed, which can meet the output requirements of the three-stage reduction. At the same time, tapered roller bearings can withstand axial loads in one direction, cope with radial forces caused by poor assembly in the working conditions, and improve the impact load and safety factor.

[0068] Preferably, the third shaft (331) is further provided with a sealing ring (5), which is located at one end near the output through hole (21).

[0069] When installed with the conveyor belt, the output flange (2) is connected to the drive roller of the conveyor belt, driving the drive roller to rotate. When the drive roller rotates, it will carry away nearby dust. If the output through hole (21) is not sealed by the sealing ring (5), the dust will enter the reduction mechanism or the first bearing (4) through the output through hole (21), thereby affecting the normal operation of the reduction mechanism and the first bearing (4).

[0070] Preferably, the output flange (2) is also provided with a vent hole (7), and the vent hole (7) is detachably fitted with an exhaust plug (6).

[0071] When the geared motor is running, the meshing of the gears and the agitation of the lubricating oil will generate bubbles and gas. These gases will gradually accumulate in the enclosed space and form pressure. In this utility model, the vent hole is provided so that the gas accumulated in the output flange (2) can be discharged from the vent hole. After the pressure is released, the exhaust plug (6) can be reinstalled so that the inside of the output flange (2) remains sealed, preventing dust from entering the gear and ensuring the long-term stable operation of the speed reduction mechanism.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0073] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gear-structured reduction motor, characterized in that, Including the motor and output flange; A speed reduction mechanism is installed inside the output flange; The motor is detachably connected to the output flange, and the output end of the motor is inserted into the output flange and engaged with the reduction mechanism. The deceleration mechanism includes a first reduction gear component, a second reduction gear component, and a gear output component; The first reduction gear includes a first shaft and a first gear and a second gear sleeved on the first shaft, wherein the diameter of the first gear is larger than the diameter of the second gear, and the first gear meshes with the sixth gear at the output end of the motor; The second reduction gear includes a second shaft and a third gear and a fourth gear sleeved on the second shaft, wherein the diameter of the third gear is larger than the diameter of the fourth gear and the second gear, and the second gear meshes with the third gear; The gear output component includes a third shaft and a fifth gear mounted on one end of the third shaft. The diameter of the fifth gear is larger than that of the fourth gear. The fourth gear meshes with the fifth gear. The free end of the third shaft passes through the output flange. In the horizontal direction, the first reduction gear is located above the motor output shaft, the second reduction gear is located between the motor output shaft and the first reduction gear, and the gear output component is located between the first reduction gear and the second reduction gear.

2. The gear-structured reduction motor according to claim 1, characterized in that, The first gear, the second gear, the third gear, the fourth gear, the fifth gear, and the sixth gear are all helical gears.

3. A gear-structured reduction motor according to claim 1, characterized in that, The thickness of the second, fourth, and sixth gears is greater than the thickness of the first, third, and fifth gears.

4. A gear-structured reduction motor according to claim 1, characterized in that, The first gear and the sixth gear constitute the first stage of reduction. In the first stage of reduction, the gear module is 1.25, the rack helix angle of the first gear and the sixth gear is 20°, the gear ratio is 45 / 24, and the center distance is 46. The second gear and the third gear form a two-stage reduction gear. In the two-stage reduction gear, the gear module is 1.25, the rack helix angle of the second gear and the third gear is 12°, the gear ratio is 57 / 23, and the center distance is 50.

5. The fourth and fifth gears constitute a three-stage reduction. In the three-stage reduction, the gear module is 1.75, the rack helix angle of the fifth and fourth gears is 7°, the gear ratio is 56 / 11, and the center distance is 59.

5. A gear-structured reduction motor according to claim 4, characterized in that, The output flange has an output through hole, the third shaft is fitted with a first bearing, the first bearing is installed in the output through hole, and the free end of the third shaft passes through the output through hole and protrudes from the output flange; The side of the motor facing the output flange is the mounting surface, and a first bearing hole and a second bearing hole are respectively provided on the mounting surface; The output flange is provided with a third bearing hole and a fourth bearing hole respectively. The third bearing hole and the first bearing hole are located on the same horizontal line, and the second bearing hole and the fourth bearing hole are located on the same horizontal line. The two ends of the first shaft are respectively mounted in the third bearing hole and the first bearing hole via bearings; The two ends of the second shaft are respectively mounted in the second bearing hole and the fourth bearing hole via bearings.

6. A gear-structured reduction motor according to claim 5, characterized in that, The first bearing is a tapered roller bearing.

7. A gear-structured reduction motor according to claim 6, characterized in that, The third shaft is also provided with a sealing ring, which is located at one end near the output through hole.

8. A gear-structured reduction motor according to claim 7, characterized in that, The output flange is also provided with a vent hole, and the vent hole can be detachably fitted with an exhaust plug.

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