Anti-leakage speed reducer

Abstract

The utility model discloses an anti-leakage speed reducer which comprises a transmission box, an input shaft rod, a harmonic wheel, a flexible wheel and an output disc. The transmission box is used for containing the transmission assembly and is in sealed connection with the shaft seal cylinder through the sealing cover so as to reduce leakage of lubricating oil. The driving roller is arranged at one end of the input shaft rod, the first permanent magnet strip is arranged on the periphery of the driving roller, the second permanent magnet strip is arranged on the inner side of the harmonic wheel, non-contact transmission is achieved through magnetic coupling, and the sealing performance is improved. By means of magnetic coupling non-contact transmission, harmonic transmission speed reduction, flexible gear elastic deformation and multiple sealing design, the sealing performance of the speed reducer is effectively improved, the service life of the speed reducer is effectively prolonged, and meanwhile high efficiency and stability of transmission are guaranteed. The speed reducer is suitable for precision mechanical equipment with high precision, long service life and high sealing requirements, such as the fields of robots, aerospace, high-end automation equipment and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a speed reducer technical field, concretely is a kind of anti-leakage speed reducer. BACKGROUND

[0002] Speed reducer is a kind of transmission device for reducing input shaft speed and increasing output torque, widely used in automation equipment, robot, aerospace, precision manufacturing and other fields.The traditional speed reducer mainly adopts mechanical meshing transmission mode, such as gear transmission, worm gear transmission, harmonic transmission and so on.However, in these traditional transmission modes, the following technical problems exist:

[0003] Traditional mechanical speed reducer usually adopts bearing or gear meshing mode for power transmission, and needs to add lubricating oil regularly to reduce friction.However, due to the wear of bearing, sealing ring and other components during long-term use, gap is easy to occur at bearing seat, oil seal and other parts, resulting in lubricating oil leakage, which not only affects the normal operation of equipment, but also may pollute the working environment.

[0004] Traditional gear transmission relies on rigid contact, which will generate large friction and heat during operation, resulting in energy loss and reducing transmission efficiency.Due to mechanical friction, the gears, bearings, oil seals and other components of traditional speed reducer are easy to wear under high load and long time operation, thereby reducing service life and increasing maintenance cost.

[0005] In traditional speed reducer, the rotation of bearing at power input end and transmission shaft will cause axial movement or radial swing, which will cause seal failure of shaft seal, aggravate lubricating oil leakage problem and affect long-term operation stability of equipment.The existing technology usually adopts thickened sealing ring or double sealing mode, but still cannot fundamentally solve the sealing failure problem caused by axial movement.

[0006] Therefore, the existing problems are studied and improved, and an anti-leakage speed reducer is provided to solve the existing problems, aiming to solve the problems and improve the practical value through the technology. INVENTION CONTENTS

[0007] The utility model aims at solving the technical problems existing in prior art or related technology.

[0008] The utility model provides a kind of anti-leakage speed reducer, aims at improving sealing performance, reducing lubricating oil leakage, and promoting transmission stability and service life.The speed reducer adopts magnetic coupling non-contact transmission, harmonic transmission speed reduction, flexible wheel elastic deformation and multiple sealing design, is suitable for the mechanical equipment of high precision, high sealing property and high durability requirement, such as robot, aerospace and high-end automation equipment and other fields.

[0009] The anti-seepage speed reducer comprises a transmission box, an input shaft rod, a harmonic wheel and a flexible wheel.

[0010] The transmission box is provided with a sealing structure, the cover and the shaft sealing cylinder are designed in one piece, the sealing effect is ensured through multiple sealing modes (O-shaped sealing ring, sealing gasket, sealing glue, etc.), and the leakage of lubricating oil is prevented.

[0011] The input shaft rod is connected with a driving roller at one end, a plurality of first permanent magnetic strips are arranged on the outer periphery of the driving roller, and a plurality of second permanent magnetic strips are arranged on the inner side of the harmonic wheel.

[0012] The harmonic wheel is arranged in the transmission box and is sleeved on the inner side of the flexible wheel, the outer side of the flexible wheel is in transmission engagement with the resisting teeth on the inner side of the transmission box, and a harmonic transmission structure is formed.

[0013] The output disc is installed on the surface of the transmission box and is driven to rotate through the flexible wheel, so that torque output is realized.

[0014] The utility model discloses obtained the beneficial effect is:

[0015] 1. In the utility model, the one-piece magnetic coupling transmission and harmonic speed reduction mode are adopted, the first permanent magnetic strip and the second permanent magnetic strip are magnetically coupled, contactless driving is realized, oil leakage caused by shaft movement is avoided, friction loss is reduced, long-term sealing is realized, and maintenance cost is reduced.

[0016] 2. The utility model discloses a multiple sealing design of shaft seal cylinder, sealing ring and cover, improves the sealing performance of the speed reducer, realizes permanent sealing under the action of the cover and the shaft seal cylinder, avoids the pollution problem caused by lubricating oil leakage, and is suitable for the precise transmission system with high sealing requirement. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of an embodiment of the utility model;

[0018] Figure 2 It is the internal structure schematic diagram of transmission box of an embodiment of the utility model;

[0019] Figure 3 It is transmission box and output disc structure schematic diagram of an embodiment of the utility model;

[0020] Figure 4 It is transmission box internal and harmonic wheel structure schematic diagram of an embodiment of the utility model;

[0021] Figure 5 It is harmonic wheel and cover structure schematic diagram of an embodiment of the utility model.

[0022] Reference signs:

[0023] 100, transmission box; 110, flexspline; 120, harmonic wheel; 130, cover; 101, tooth; 102, sealing ring; 121, gear; 122, second permanent magnet strip; 131, shaft seal cylinder;

[0024] 200, input shaft; 210, driving roller; 211, first permanent magnet strip; 300, output disc. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further explained in detail below in combination with specific implementation manners and with reference to the drawings. It should be explained that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0026] It is understood that the description is only exemplary, and is not intended to limit the scope of the utility model.

[0027] The utility model discloses a kind of anti-leakage speed reducers. Figures 1-5 Some embodiments of the utility model provide a kind of anti-leakage speed reducer.

[0028] The utility model provides a kind of anti-leakage speed reducer, including transmission box 100, input shaft 200, harmonic wheel 120, flexspline 110 and output disc 300.

[0029] The transmission box 100 is used for accommodating a transmission assembly, and is provided with a cover 130 which is connected with the transmission box 100 through a sealing connection, so as to improve the sealing performance of the equipment and prevent internal lubricating oil from leaking.

[0030] The harmonic wheel 120 is arranged in the transmission box 100 and is sleeved with the inner side of the flexible wheel 110, and the outer side of the flexible wheel 110 is in transmission engagement with the toothed wheel 101 on the inner side of the transmission box 100.

[0031] The surface of the cover 130 is provided with a shaft sealing cylinder 131, and the harmonic wheel 120 is rotatably sleeved with the surface of the shaft sealing cylinder 131, so as to reduce the risk of axial leakage. One end of the input shaft 200 is connected with a driving roller 210 which is installed on the inner side of the shaft sealing cylinder 131 through a bearing.

[0032] The output disc 300 is installed on the surface of the transmission box 100 and is driven to rotate through the flexible wheel 110, so as to realize torque output. In order to prevent lubricating oil from leaking, the surface of the transmission box 100 is provided with a plurality of sealing rings 102 which are arranged in a concentric ring shape, so as to further enhance the sealing effect.

[0033] The flexible wheel 110 is made of high-strength elastic material and is provided with a radial deformation structure, so as to reduce vibration caused by load change during transmission and improve transmission stability.

[0034] The utility model discloses a compact structure, high sealing, high precision's anti -infiltration speed reducer adopts magnetic coupling transmission, harmonic speed reduction, flexible wheel elastic deformation and multiple sealing design, realizes high -efficient, durable, anti -infiltration's structure, is applicable to the precision mechanical equipment of high sealing requirement.

[0035] The utility model discloses a compact structure, high sealing, high precision's anti -infiltration speed reducer adopts magnetic coupling transmission, harmonic speed reduction, flexible wheel elastic deformation and multiple sealing design, realizes high -efficient, durable, anti -infiltration's structure, is applicable to the precision mechanical equipment of high sealing requirement.

[0036] The anti-seepage speed reducer provided by the utility model adopts the harmonic drive principle, realizes contactless transmission through magnetic coupling driving, and avoids the problems of abrasion and sealing performance reduction caused by traditional mechanical contact type transmission.

[0037] Drive input: when operating, external power drives the driving roller 210 to rotate through the input shaft rod 200, the first permanent magnet strip 211 on the driving roller 210 interacts with the second permanent magnet strip 122 on the inner side of the harmonic gear 120, and the harmonic gear 120 is synchronously rotated through magnetic coupling mode. Since magnetic transmission is adopted, physical contact is not needed, thereby reducing the shaft seal abrasion and improving the sealing effect.

[0038] Harmonic drive speed reduction: when the harmonic gear 120 rotates, the internal flexspline 110 is constrained by the resisting tooth 101 on the inner side of the transmission box 100, controllable elastic deformation is generated, the meshing position of the flexspline 110 and the resisting tooth 101 on the inner side of the transmission box 100 is changed constantly, and thus the harmonic speed reduction function is realized.

[0039] Output transmission: since the flexspline 110 and the harmonic gear 120 are periodically meshed, the output disc 300 at the output end rotates at a lower speed and provides higher torque output. In this way, the speed reducer can realize the transmission function of high precision and high torque.

[0040] Sealing and anti-seepage: during the transmission process, the shaft seal cylinder 131 and the cover 130 provide physical isolation to avoid lubricating oil leakage. Meanwhile, the sealing ring 102 on the surface of the transmission box 100 forms a multiple sealing structure, so that the internal lubricating oil cannot leak to the external environment, and the sealing reliability of the speed reducer is further improved.

[0041] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A leak-proof speed reducer, characterized in that, include: Transmission box (100), input shaft (200), harmonic wheel (120), flexible wheel (110) and output disc (300); The transmission box (100) is used to accommodate the transmission components and is provided with a cover (130). The cover (130) is connected to the transmission box (100) by a sealing connection. The inner side of the transmission box (100) is provided with abutting teeth (101). The harmonic wheel (120) is disposed in the transmission box (100) and sleeved on the inner side of the flexible wheel (110). The flexible wheel (110) engages with the abutting teeth (101) on the inner side of the transmission box (100) to realize speed reduction transmission. The surface of the cover (130) is provided with a shaft sealing cylinder (131), and the harmonic wheel (120) is rotatably sleeved on the surface of the shaft sealing cylinder (131). One end of the input shaft (200) is connected to an active roller (210) rotatably sleeved on the inner side of the shaft sealing cylinder (131). The outer periphery of the active roller (210) is provided with a plurality of first permanent magnet strips (211), and the inner side of the harmonic wheel (120) is provided with a plurality of second permanent magnet strips (122). The output disc (300) is mounted on the surface of the transmission box (100) and rotated by the flexible wheel (110). The surface of the transmission box (100) is provided with a plurality of sealing rings (102) for abutting against the surface of the output disc (300), and the plurality of sealing rings (102) are arranged in a concentric ring shape to prevent lubricating oil leakage and improve the sealing performance of the reducer.

2. The leak-proof speed reducer according to claim 1, characterized in that, The first permanent magnet strip (211) on the surface of the drive roller (210) is magnetically coupled to the second permanent magnet strip (122) on the inner side of the harmonic wheel (120). The first permanent magnet strip (211) and the second permanent magnet strip (122) interact to achieve contactless transmission and improve sealing.

3. The leak-proof speed reducer according to claim 1, characterized in that, The harmonic wheel (120) is provided with a stop wheel (121), and the stop wheel (121) is arranged symmetrically about the axis of the harmonic wheel (120) to realize harmonic transmission between the harmonic wheel (120) and the flexible wheel (110).

4. The leak-proof speed reducer according to claim 1, characterized in that, The cover (130) and the shaft sealing cylinder (131) are integrally formed. The shaft sealing cylinder (131) is used to seal the mounting hole of the input shaft (200) to enhance the sealing effect of the reducer.

5. A leak-proof speed reducer according to claim 1, characterized in that, The sealing ring (102) is made of high temperature and corrosion resistant material to meet the usage requirements under different working conditions and improve the sealing life.

6. The leak-proof speed reducer according to claim 1, characterized in that, The transmission box (100) and the cover (130) are provided with multiple sealing structures, including but not limited to O-rings, gaskets or sealant, to further improve sealing performance and prevent external contaminants from entering.

7. The leak-proof speed reducer according to claim 1, characterized in that, The output panel (300) is provided with multiple mounting holes to facilitate connection with external loads and improve adaptability.

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