Integrated gear motor

Abstract

The utility model discloses an integrated gear motor which comprises a front casing and a tail casing which are connected with each other, the front end of the front casing is provided with a front end cover, the rear end of the tail casing is provided with a tail cover, and the front casing and the tail casing are respectively connected with a rotor shaft through a first bearing and a second bearing. A rotor shaft is connected in the front machine shell through a motor stator assembly, magnetic steel and a rotor frame in sequence, an output shaft is connected in the front end cover through a third bearing, the front end of the rotor shaft is connected with a sun gear, and the output shaft is matched with the sun gear through a planet gear structure. An outer gear ring is installed in the front machine shell, and the outer gear ring is matched with the planet gear structure. Compared with a transmission split structure, the integrated gear motor cancels a coupler and a supporting bearing, and the overall efficiency of the motor is slightly improved. Meanwhile, the equipment failure risk caused by connection failure in the long-term use process of the coupler is avoided. Meanwhile, the integrated gear motor is high in integration level, small in overall length, light in weight and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to a speed reducer motor technical field, concretely is an integrated speed reducer motor. BACKGROUND

[0002] The traditional speed reducer motor has the problems of long length and low efficiency, and the coupling is prone to connection failure under long-term use, which may cause equipment failure.

[0003] From the design end, the selection and matching process of the conventional servo motor and the precision planetary reducer is as follows under normal circumstances:

[0004] 1) Preliminary selection of servo motor speed and power → calculation of reducer reduction ratio → calculation of servo motor torque → checking of servo motor inertia ratio → checking of reducer rated torque and radial and axial forces. During the selection process, if one item is unqualified, all must be recalculated.

[0005] 2) The main structure of the precision planetary reducer on the market is divided into: straight tooth structure, helical tooth structure, single bearing support, double bearing support and other forms, which can be at least 3 or more through permutation and combination. Designers accurately match under the premise of controlling cost, which is very time-consuming and time-consuming.

[0006] From the use end, the installation process of the conventional servo motor and the precision planetary reducer is as follows:

[0007] Detect each part to be assembled → clean the assembly surface → open the through hole of the upper coupling of the reducer, manually rotate the coupling, and make the locking screw on the coupling point to the observation hole → gently insert the motor output shaft into the coupling of the reducer → tighten the locking screw on the coupling with a torque wrench → tighten the connecting screw between the motor and the reducer with a torque wrench → after detection, the motor is powered on, the motor and the reducer run smoothly and quietly → connected to the terminal load. The whole operation process is relatively complicated. INVENTION CONTENTS

[0008] The utility model aims at providing an integrated speed reducer motor to solve the problem of long length of the traditional speed reducer motor.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated reduction motor, comprising a front casing and a tail casing connected to each other, a front end cover being installed at the front end of the front casing, and a tail cover being installed at the rear end of the tail casing, the front casing and the tail casing being connected to the rotor shaft through a first bearing and a second bearing respectively, the front casing being connected to the rotor shaft through a motor stator assembly, a magnet and a rotor frame in sequence, the front end cover being connected to an output shaft through a third bearing, the front end of the rotor shaft being connected to a sun gear, and the output shaft and the sun gear being matched through a planetary gear structure; an outer ring gear being installed in the front casing, and the outer ring gear being matched with the planetary gear structure.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] Compared with the split structure of relative transmission, the integrated reduction motor has high integration, small overall length, light weight and low cost.

[0012] Compared to the split transmission structure, the integrated reduction motor eliminates the coupling and support bearings, which slightly improves the overall efficiency of the motor. It also avoids the risk of coupling failure during long-term use, which could cause equipment failure.

[0013] The split structure of relative transmission reduces the workload of users in repeated debugging and maintenance during the installation of the motor, shortening the product manufacturing cycle.

[0014] Compared with the split structure of the transmission, the integrated reduction motor housing is made of aluminum alloy, and several parts are eliminated, so the overall weight is lighter, which is particularly suitable for scenarios with requirements on motor weight.

[0015] The parameters of the integrated reduction motor are intuitive and clear, which reduces the complicated calculations for designers in the process of motor and reducer adaptation and speeds up the research and development progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the integrated reduction motor of the present utility model.

[0017] Figure 2 This is a cross-sectional view of the integrated reduction motor of the present utility model.

[0018] Figure 3 This is a cross-sectional view of the planetary gear of the present invention.

[0019] Figure 4 This is a three-dimensional diagram of the planetary gear of the present invention.

[0020] Figure 5 This is a cross-sectional view of an integrated reduction motor according to another embodiment of the present invention.

[0021] Figure 6The cross section view at the planetary gear of another embodiment of the utility model.

[0022] Figure 7 The perspective view of another embodiment of the utility model at the planetary gear.

[0023] 1, front casing;2, tail casing;3, front end cover;4, tail cover;5, rotor shaft;6, stop pin;7, sun gear;8, output shaft;9, outer gear ring;10, first planetary gear;11, second planetary gear;12, mounting frame;13, power line terminal block;14, encoder terminal block;15, first bearing;16, second bearing;17, third bearing;18, fifth bearing;19, sixth bearing;20, first oil seal;21, second oil seal;22, fourth bearing;23, planetary shaft;24, planetary gear guard plate;25, encoder. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0025] Please refer to Figure 1-4 The utility model provides a kind of technical scheme: a kind of integrated reduction motor, including the front casing 1 and tail casing 2 of connection, the front end of the front casing 1 is equipped with front end cover 3, tail casing 2 rear end is equipped with tail cover 4, the front casing 1 and tail casing 2 are connected respectively by first bearing 15 and second bearing 16 in the inside, rotor shaft 5, the first bearing 15 is equipped with wave washer between front casing 1, provides axial pre-pressure for bearing.

[0026] the front casing 1 is sequentially connected rotor shaft 5 by motor stator assembly, magnetic steel and rotor bracket in the inside, the output shaft 8 is connected by third bearing 17 in the inside of the front end cover 3, the front end of the rotor shaft 5 is connected sun gear 7, and the both are connected by interference fit, stop pin 6 is also equipped between the front end of rotor shaft 5 and sun gear 7, the fixation of both is realized. And output shaft 8 and sun gear 7 are matched by planetary gear structure. Outer gear ring 9 is installed in the inside of the front casing 1, and the cooperation between the inside of the front casing 1 and outer gear ring 9 is by stop pin 6.

[0027] The outer ring gear 9 also cooperates with the planetary gear structure, which includes first planetary gears 10. There are at least three first planetary gears 10, which are spur gears that directly mesh with the outer ring gear 9 and the sun gear 7. The first planetary gears 10 are connected to the output shaft 8 via a wheel-axle structure. They mesh with the outer ring gear 9 and the sun gear 7, respectively, to achieve a reduction gear function. The outer ring gear 9 and the front cover 3 are connected to the output shaft 8 via a fifth bearing 18, ensuring normal rotation of the output shaft 8.

[0028] The front housing 1 is mounted with a power line terminal block 13, which is connected to the UVW three-phase coil on the motor stator assembly via wires. The rear housing 2 is mounted with an encoder terminal block 14, which houses an encoder 25. The encoder terminal block 14 is electrically connected to the encoder 25, which is mated to the end of the rotor shaft 5.

[0029] If necessary, an electromagnetic brake can also be set up. The electromagnet part is connected to the front housing 1 through screw 1. The friction plate of the electromagnetic brake assembly is connected to the rotor shaft through interference fit, and the power line is connected to the electromagnetic coil on the electromagnetic brake.

[0030] A first oil seal 20 is provided between the first bearing 15 and the front housing 1, and a second oil seal 21 is provided between the front cover 3 and the output shaft 8. Sealing rings are provided at the joints of the front cover 3, the front housing 1, the rear housing 2 and the tail cover 4 to ensure the sealing of the device.

[0031] The axle structure includes a fourth bearing 22 and a planetary shaft 23. The planetary shaft 23 is sleeved around the fourth bearing 22, which is then mounted on the output shaft 8. A planetary gear guard 24 on one side fits against the planetary shaft 23 and the end surface of the first planetary gear 10, while the planetary gear guard 24 on the other side fits against the fourth bearing 22, the planetary shaft 23, and the end surface of the first planetary gear 10, thereby restricting the position of the first planetary gear 10. Because the first planetary gear 10 utilizes a cantilever-like structure, this design reduces the manufacturing cost of the integrated motor.

[0032] See also Figure 5-7 The present invention also provides another technical solution, which is different from the above technical solution in that: the planetary gear structure includes a second planetary gear 11 and a mounting frame 12, the mounting frame 12 is installed on the output shaft 8, the fourth bearing 22 is installed between the output shaft 8 and the mounting frame 12, and the second planetary gear 11 is also placed between the output shaft 8 and the mounting frame 12, and a sixth bearing 19 is provided between the mounting frame 12 and the outer ring gear 9.

[0033] The second planetary gear 11 is a bevel gear, and the number of the second planetary gear 11 is at least three, and the three bevel gears directly engage the outer gear ring 9 and the sun gear 7. The planetary gear guard 24 is arranged on both sides of the planetary shaft 23 and the second planetary gear 11, and the remaining technical features are unchanged.

[0034] Since both sides of the fourth bearing 22 on which the second planetary gear 11 is installed are supported, and the first planetary gear 10 is only single-sidedly supported, the motor torque applied to the second planetary gear 11 is larger, and the transmission accuracy of such a design is higher.

[0035] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than that of the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0036] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An integrated reduction motor, comprising a front housing (1) and a tail housing (2) connected to each other, wherein a front end cover (3) is installed at the front end of the front housing (1), and a tail cover (4) is installed at the rear end of the tail housing (2), wherein a rotor shaft (5) is connected to the front housing (1) and the tail housing (2) through a first bearing (15) and a second bearing (16), respectively, and the rotor shaft (5) is connected to the front housing (1) through a motor stator assembly, a magnetic steel and a rotor frame in sequence, and an output shaft (8) is connected to the front end cover (3) through a third bearing (17), characterized in that: The front end of the rotor shaft (5) is connected to the sun gear (7), and the output shaft (8) and the sun gear (7) are matched through a planetary gear structure; An outer gear ring (9) is installed in the front housing (1), and the outer gear ring (9) cooperates with the planetary gear structure.

2. The integrated reduction motor according to claim 1, characterized in that: The planetary gear structure comprises a first planetary gear (10), the first planetary gear (10) being connected to an output shaft (8) via a wheel-axle structure, the first planetary gear (10) being meshed with an outer ring gear (9) and a sun gear (7) respectively, and the outer ring gear (9) and a front end cover (3) being connected to the output shaft (8) via a fifth bearing (18).

3. The integrated reduction motor according to claim 2, characterized in that: The first planetary gears (10) are spur gears, and the number of the first planetary gears (10) is at least three; The wheel shaft structure comprises a fourth bearing (22) and a planetary shaft (23), wherein the planetary shaft (23) is sleeved outside the fourth bearing (22), and the fourth bearing (22) is mounted on the output shaft (8).

4. The integrated reduction motor according to claim 1, characterized in that: The planetary gear structure comprises a second planetary gear (11) and a mounting frame (12), wherein the mounting frame (12) is mounted on the output shaft (8), the second planetary gear (11) is connected between the output shaft (8) and the mounting frame (12) via a wheel axle structure, and a sixth bearing (19) is provided between the mounting frame (12) and the outer gear ring (9).

5. The integrated reduction motor according to claim 4, characterized in that: The second planetary gears (11) are bevel gears, and the number of the second planetary gears (11) is at least three; The wheel shaft structure comprises a fourth bearing (22) and a planetary shaft (23), wherein the planetary shaft (23) is sleeved outside the fourth bearing (22), and the fourth bearing (22) is installed between the output shaft (8) and the mounting frame (12).

6. The integrated reduction motor according to claim 1, characterized in that: A wave washer is provided between the first bearing and the front housing (1).

7. The integrated reduction motor according to claim 1, characterized in that: A power line connection seat (13) is installed on the front housing (1), and an encoder connection seat (14) is installed on the rear housing (2).

8. The integrated reduction motor according to claim 1, characterized in that: A first oil seal (20) is provided between the first bearing and the front housing (1), and a second oil seal (21) is provided between the front end cover (3) and the output shaft (8).

9. The integrated reduction motor according to claim 1, characterized in that: Sealing rings are provided at the connections between the front end cover (3), the front housing (1), the rear housing (2) and the rear cover (4).

10. The integrated reduction motor according to claim 1, characterized in that: The front end of the rotor shaft (5) and the sun gear (7), as well as the inside of the front housing (1) and the outer gear ring (9) are engaged via a stop pin (6).

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