Modular gear reduction motor with external eccentric assembly and motorized roller

Abstract

The utility model relates to a kind of modularization gear reduction motor and electric cylinder of external eccentric assembly, including shell, its two ends are respectively equipped with front cover and back cover, support cover is equipped in shell, it separates the space in shell into two regions distributed axially, for respectively setting motor and gear reduction mechanism;Motor output shaft of motor is coaxially arranged with shell, and motor output shaft axial two ends are respectively connected with back cover, support cover by bearing piece;Input gear of gear reduction mechanism is coaxial and integrally arranged with motor output shaft;Final stage output gear of gear reduction mechanism is placed on reduction output shaft, and reduction output shaft two ends are respectively connected with support cover, front cover by bearing piece;Reduction output shaft is eccentric with motor output shaft;Reduction output shaft is used to be connected with the driven member.The utility model can avoid centring deviation and improve running stability and assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electric roller technology, and in particular to an externally mounted eccentrically assembled modular gear reducer motor and electric roller. Background Technology

[0002] Traditional oil-cooled electric drum drive systems typically require the integration of multiple components, including a three-phase asynchronous motor, a reducer, and hydraulic fluid, within the drum's internal space, leading to assembly difficulties. Furthermore, the enclosed structure results in low heat dissipation efficiency, impacting the equipment's lifespan. In existing technologies, externally mounted reducers for electric drum drives often employ a coaxial arrangement of the motor and reducer, resulting in a larger axial dimension along the drum, which is unsuitable for flattened designs and application requirements. This also easily leads to misalignment, causing vibration and noise problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an externally mounted, eccentrically assembled modular gear reducer motor and electric drum. The purpose is to avoid centering deviation and improve operational stability through the eccentric setting of the reducer structure.

[0004] The technical solution adopted in this utility model is as follows:

[0005] This utility model relates to an externally mounted, eccentrically assembled modular gear reducer motor, including a housing with a front cover and a rear cover at both ends. A support cover is provided inside the housing, which divides the space inside the housing into two axially distributed areas for respectively accommodating the motor and the gear reduction mechanism.

[0006] The motor output shaft of the motor is coaxially arranged with the housing, and the two ends of the motor output shaft are respectively connected to the rear cover and the support cover through bearing components;

[0007] The input gear of the gear reduction mechanism is coaxial with and integrally formed with the output shaft of the motor, and the support cover is provided with a central hole for the input gear to pass through;

[0008] The final output gear of the gear reduction mechanism is sleeved on the reduction output shaft, and the two ends of the reduction output shaft are respectively connected to the support cover and the front cover through bearing components;

[0009] The reduction output shaft is eccentrically positioned relative to the motor output shaft;

[0010] The reduction output shaft is used to connect to the component to be driven.

[0011] As a further improvement to the above technical solution:

[0012] The reduction output shaft body has a connecting plate at its end, which extends out of the front cover and is used to connect with the component to be driven.

[0013] The output shaft body and the connecting plate are either separate or integrated.

[0014] The outer circumference of the front cover is provided with a positioning groove, which is used to engage with the external frame.

[0015] The reduction output shaft is tapered at the end near the rear cover.

[0016] The support cover is assembled with the housing by a heat fitting process or by casting; the support cover is fixedly connected to the front cover.

[0017] The gear reduction mechanism is a two-stage or three-stage double-gear reduction mechanism, and the structure of the three-stage double-gear reduction mechanism is as follows:

[0018] It includes a primary gear shaft and a secondary gear shaft. The primary gear shaft is provided with a primary output gear and a secondary input gear, and the secondary gear shaft is provided with a secondary output gear and a tertiary input gear.

[0019] The first-stage output gear meshes with the input gear, the second-stage input gear meshes with the second-stage output gear, and the third-stage input gear meshes with the final-stage output gear.

[0020] The first-stage gear shaft is integrally formed with the first-stage output gear and the second-stage input gear by die casting; the second-stage gear shaft is integrally formed with the second-stage output gear and the third-stage input gear by die casting.

[0021] One end of each of the first-stage gear shaft and the second-stage gear shaft is connected to the support cover via bearing components, and the other end is connected to the front cover via bearing components.

[0022] The rear cover is equipped with a waterproof connector for leading out the stator wires of the motor.

[0023] This utility model also relates to an electric roller, including the aforementioned externally mounted eccentric modular gear reducer motor, wherein the reducer output shaft is connected to the roller shaft of the electric roller to form an assembly.

[0024] The beneficial effects of this utility model are as follows:

[0025] This invention uses a support cover to assemble the motor and gear reduction mechanism into a module within the housing. By eccentrically positioning the reduction output shaft of the gear reduction mechanism relative to the motor output shaft, the compactness of the module structure is enhanced, the axial dimension is reduced, and a flattened design of the reducer is achieved. This avoids centering deviation, effectively reducing vibration and noise, and improving overall operational stability.

[0026] The two ends of the reduction output shaft of this utility model are connected to the support cover and the front cover respectively through bearing components, so as to achieve support at both ends, share the load, reduce the pressure of a single bearing, enhance the resistance to deformation, and help to increase the span and improve the load-bearing capacity of the module structure.

[0027] This utility model of an electric roller adopts an external modular reducer, modular assembly and disassembly, and an eccentric structure for easy assembly and disassembly, thus improving assembly efficiency. It also reduces the temperature rise inside the roller, contributing to improved operational reliability and service life.

[0028] The end of the deceleration output shaft of this invention is disc-shaped and can be directly connected to the electric drum, which helps to reduce the length of the drum shaft and make the drum lighter.

[0029] The speed reducer of this utility model uses the positioning groove on the front cover to directly connect with the frame of the electric roller conveyor, so as to achieve fixation, convenient installation and high efficiency.

[0030] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the speed reducer according to an embodiment of the present utility model.

[0032] Figure 2 This is a cross-sectional view of an embodiment of the present utility model.

[0033] Figure 3 This is a variation of the assembly of the deceleration output shaft body and the connecting disc in this embodiment of the present utility model.

[0034] Figure 4 This is a modified form of the deceleration output shaft in an embodiment of this utility model.

[0035] Figure 5 This is a schematic diagram of the gear reduction mechanism according to an embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram of the assembly structure of the rotor core and the motor output shaft in an embodiment of the present invention.

[0037] Figure 7 This is a front view of the rotor core of an embodiment of this utility model.

[0038] Figure 8 This is a schematic diagram of the rotor structure according to an embodiment of the present invention.

[0039] Figure 9 This is a schematic diagram showing the application state of the speed reducer in an embodiment of this utility model.

[0040] In the diagram: 1. Housing; 2. Rear cover; 3. Reducer output shaft; 4. Stator assembly; 5. Magnet; 6. Motor output shaft; 7. Rotor; 9. Support cover; 10. Electric drum; 12. First-stage output gear; 13. First-stage gear shaft; 14. Second-stage input gear; 15. Second-stage output gear; 16. Third-stage input gear; 17. Front cover; 18. Final-stage output gear; 20. Waterproof connector; 31. Connecting disc; 61. Input gear; 71. First rotor core; 72. Second rotor core; 81. First positioning part; 82. Second positioning part; 100. Reducer; 101. Drum shaft; 171. Positioning groove. Detailed Implementation

[0041] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0042] Example 1

[0043] See Figure 1 and Figure 2 In this embodiment, the externally mounted eccentrically assembled modular gear reducer motor has the following structure for the reducer 100:

[0044] Includes a housing 1, with a front cover 17 and a rear cover 2 at its two ends respectively. Inside the housing 1 is a support cover 9, which divides the space inside the housing 1 into two axially distributed areas for respectively accommodating a motor and a gear reduction mechanism.

[0045] The motor output shaft 6 is coaxially arranged with the housing 1, and the two ends of the motor output shaft 6 are connected to the rear cover 2 and the support cover 9 respectively through bearing components;

[0046] The input gear 61 of the gear reduction mechanism is coaxial with the output shaft 6 of the motor and is integrally set. The support cover 9 is provided with a central hole for the input gear 61 to pass through.

[0047] The final output gear 18 of the gear reduction mechanism is sleeved on the reduction output shaft 3, and the two ends of the reduction output shaft 3 are connected to the support cover 9 and the front cover 17 respectively through bearing components;

[0048] The reduction output shaft 3 is eccentrically positioned relative to the motor output shaft 6.

[0049] The end of the reduction output shaft 3 body is provided with a connecting plate 31, which extends out of the front cover 17 and is used to connect with the component to be driven.

[0050] As an optional configuration, the reduction output shaft 3 body and the connecting plate 31 are integrated as follows: Figure 1 As shown, or separately configured and connected by fasteners, such as Figure 3 As shown.

[0051] As a modified structure, the reduction output shaft 3 body is used to directly connect to the driven component, and the end does not have a connecting plate 31, such as... Figure 4 As shown.

[0052] In this embodiment, the motor and gear reduction mechanism are assembled into a module within the housing using a support cover. By eccentrically positioning the reduction output shaft of the gear reduction mechanism relative to the motor output shaft, the module's internal structure is made compact, and its axial dimensions are reduced. Furthermore, connecting both ends of the reduction output shaft to the support cover and front cover via bearings enhances load-bearing capacity and achieves a flattened design for the reducer. This avoids alignment deviations and improves assembly efficiency and operational stability.

[0053] As a preferred method, the support cover 9 and the housing 1 are assembled by a heat fitting process, or the support cover 9 and the housing 1 are integrally formed by casting.

[0054] The support cover 9 is fixedly connected to the front cover 17. Preferably, the support cover 9 is fixedly connected to the front cover 17 (along the axial direction) by a locating pin. Specifically, the support cover 9 or the front cover 17 is provided with a locating post, which has a locating hole for installing the locating pin. The locating post can be cylindrical or square.

[0055] As a preferred embodiment, the support cover 9 has an oil seal cavity on one side of the bearing chamber for mounting the bearing component that mates with the motor output shaft 6, which is used to mount the oil seal that mates with the motor output shaft 6.

[0056] The reduction output shaft 3 is tapered at one end near the rear cover 2 to reduce its size.

[0057] As a preferred embodiment, the outer circumference of the front cover 17 is provided with a plurality of positioning grooves 171 for engaging with an external frame. The plurality of positioning grooves 171 are preferably evenly arranged circumferentially.

[0058] As a preferred embodiment, the gear reduction mechanism is a two-stage or three-stage double-gear reduction mechanism, see [reference needed]. Figure 5 The structure of the three-stage double-tooth reduction mechanism is as follows:

[0059] It includes a first-stage gear shaft 13 and a second-stage gear shaft. The first-stage gear shaft 13 is equipped with a first-stage output gear 12 and a second-stage input gear 14. The second-stage gear shaft is equipped with a second-stage output gear 15 and a third-stage input gear 16.

[0060] The first-stage output gear 12 meshes with the input gear 61, the second-stage input gear 14 meshes with the second-stage output gear 15, and the third-stage input gear 16 meshes with the final-stage output gear 18.

[0061] One end of the first-stage gear shaft 13 and the second-stage gear shaft are connected to the support cover 9 via bearing components, and the other end is connected to the front cover 17 via bearing components.

[0062] As a preferred embodiment, the primary gear shaft 13 is integrally formed with the primary output gear 12 and the secondary input gear 14 by die casting; the secondary gear shaft is integrally formed with the secondary output gear 15 and the tertiary input gear 16 by die casting.

[0063] Specifically, in this embodiment, during processing, it is preferable to first use a heat-shrink process to install the support cover into the housing, and then process the corresponding bearing chambers on the support cover. At least one bearing chamber is processed on one side of the improved support cover to house the bearing component (preferably a deep groove ball bearing) that mates with the end of the motor output shaft. Then, three bearing chambers are processed on the side of the support cover near the front cover to install the bearing components (preferably deep groove ball bearings) that mate with the first-stage gear shaft, the second-stage gear shaft, and the reduction output shaft, respectively.

[0064] Specifically, the reduction output shaft 3 includes a shaft body and a connecting disc 31 at the end. The two ends of the shaft body are connected to the support cover 9 and the front cover 17 respectively through bearing components. The shaft body and the connecting disc 31 are integrally formed.

[0065] Specifically, in this embodiment, the stator core 4 of the motor is connected to the housing 1 as follows: Figure 1 As shown.

[0066] Specifically, the input gear 61 is located at the output end of the motor output shaft 6.

[0067] As a preferred method, the transmission gear used in the gear reduction mechanism is a helical gear.

[0068] As a preferred embodiment, the rear cover 2 is provided with a waterproof connector 20, which is used to lead out the stator wires of the motor.

[0069] Specifically, a rotor 7 is fitted onto the motor output shaft 6, which includes at least two sets of rotor cores, see [link to relevant documentation]. Figures 6 to 8 The rotor core includes a first rotor core 71 and a second rotor core 72, both with identical structures and closely attached axially. Each rotor core has evenly distributed positioning portions along its circumference, forming a mounting groove for installing magnets 5 between adjacent positioning portions. The positioning portions on the first rotor core 71 are named first positioning portions 81, and those on the second rotor core 72 are named second positioning portions 82. The structures of the first positioning portions 81 and second positioning portions 82, as well as the spacing between adjacent first positioning portions 81 and second positioning portions 82, are identical. Furthermore, the first rotor core 71 and second rotor core 72 form a misalignment angle along the axial direction. This results in the magnet slots formed between the two first positioning portions 81 and between the two second positioning portions 82 being misaligned by a certain angle in the axial direction. This arrangement effectively reduces the central angle of the motor tooth cogging.

[0070] As a preferred embodiment, the magnet 5 adopts a salient pole structure. That is, the outer and inner circular surfaces of the magnet are not concentric, and the outer circular surface protrudes outward more than the inner circular surface, which can effectively reduce the rotor cogging torque.

[0071] Example 2

[0072] An electric roller, see Figure 9 It includes the modular gear reducer motor with external eccentric assembly as described in Embodiment 1, wherein the reducer output shaft 3 of the reducer 100 is connected to the drum shaft 101 of the electric drum 10.

[0073] Specifically, the connecting disc 31 of the reduction output shaft 3 has a connecting hole at its center for connecting with the roller shaft 101 of the electric roller 10 to form an assembly. Preferably, the connecting disc 31 has a screw hole for connecting with the end cover of the electric roller 10.

[0074] Specifically, in this embodiment, after the externally mounted eccentric modular gear reducer motor and the roller assembly form an assembly, the assembly is fixed by using the positioning groove 171 of the front cover 17 to engage with the frame of the roller conveyor line, which is convenient for assembly and disassembly and has high efficiency.

[0075] In summary, the electric roller in this embodiment adopts an external reducer, realizing modular assembly, improving the assembly efficiency of the reducer, and effectively reducing the temperature rise inside the roller, which helps to improve the operational reliability and service life of the electric roller.

[0076] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A modular geared motor with external eccentric assembly, comprising a housing (1) having a front cover (17) and a rear cover (2) at its two ends, characterized in that, The housing (1) is provided with a support cover (9), which divides the space inside the housing (1) into two axially distributed areas for respectively setting up a motor and a gear reduction mechanism; The motor output shaft (6) of the motor is coaxially arranged with the housing (1), and the two ends of the motor output shaft (6) are respectively connected to the rear cover (2) and the support cover (9) through bearing components; The input gear (61) of the gear reduction mechanism is coaxial with the output shaft (6) of the motor and is integrally formed. The support cover (9) is provided with a central hole through which the input gear (61) passes. The final output gear (18) of the gear reduction mechanism is sleeved on the reduction output shaft (3), and the two ends of the reduction output shaft (3) are connected to the support cover (9) and the front cover (17) respectively through bearing components; The deceleration output shaft (3) is eccentrically positioned relative to the motor output shaft (6); The deceleration output shaft (3) is used to connect to the component to be driven.

2. The modular gear reducer motor with external eccentric assembly according to claim 1, characterized in that, The deceleration output shaft (3) has a connecting disc (31) at its end, which extends out of the front cover (17) and is used to connect with the component to be driven. The output shaft (3) body and the connecting plate (31) are either separate or integrated.

3. The modular gear reducer motor with external eccentric assembly according to claim 1, characterized in that, The front cover (17) has a positioning groove (171) on its outer circumference, which is used to engage with the external frame.

4. The modular gear reducer motor with external eccentric assembly according to claim 1, characterized in that, The deceleration output shaft (3) is tapered at one end near the rear cover (2).

5. The modular gear reducer motor with external eccentric assembly according to claim 1, characterized in that, The support cover (9) is assembled with the housing (1) by a heat fitting process or by casting; the support cover (9) is fixedly connected with the front cover (17).

6. The modular gear reducer motor with external eccentric assembly according to claim 1, characterized in that, The gear reduction mechanism is a two-stage or three-stage double-gear reduction mechanism, and the structure of the three-stage double-gear reduction mechanism is as follows: It includes a first-stage gear shaft (13) and a second-stage gear shaft. The first-stage gear shaft (13) is provided with a first-stage output gear (12) and a second-stage input gear (14). The second-stage gear shaft is provided with a second-stage output gear (15) and a third-stage input gear (16). The first-stage output gear (12) meshes with the input gear (61), the second-stage input gear (14) meshes with the second-stage output gear (15), and the third-stage input gear (16) meshes with the final-stage output gear (18).

7. The modular gear reducer motor with external eccentric assembly according to claim 6, characterized in that, The first-stage gear shaft (13) is integrally formed with the first-stage output gear (12) and the second-stage input gear (14) by die casting; the second-stage gear shaft is integrally formed with the second-stage output gear (15) and the third-stage input gear (16) by die casting.

8. The modular gear reducer motor with external eccentric assembly according to claim 6, characterized in that, One end of the first-stage gear shaft (13) and the second-stage gear shaft are connected to the support cover (9) via bearing components, and the other end is connected to the front cover (17) via bearing components.

9. The modular gear reducer motor with external eccentric assembly according to claim 1, characterized in that, The rear cover (2) is provided with a waterproof connector (20) for leading out the stator wires of the motor.

10. An electric roller, characterized in that, The modular gear reducer motor with external eccentric assembly as described in any one of claims 1 to 9 is provided, wherein the reducer output shaft (3) is connected to the drum shaft (101) of the electric drum (10) to form an assembly.

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