Harmonic speed reducer with high wear resistance

Abstract

The utility model discloses a harmonic speed reducer with high wear resistance, which comprises a rigid gear, a flexible gear and a wave generator, the wave generator is arranged in the flexible gear, the flexible gear is arranged in the rigid gear, the outer wall of the rigid gear is connected with an oil box, the oil box is movably connected with an oil cover, the outer wall of the rigid gear is provided with an oil injection hole, and the oil injection hole is communicated with the flexible gear. A circular hole positioning ring, a conical hole positioning ring, a first conical plug and a first spring are arranged in the oil injection hole, one end of the oil injection hole is communicated into the oil box, and the other end of the oil injection hole is communicated into a tooth groove of the rigid gear. Teeth of the flexible gear push the first conical plug to move out of the conical hole positioning ring, and the first spring is compressed, so that lubricating oil in the oil box is automatically injected between the rigid gear and the flexible gear, the automatic oil injection effect is achieved, the oil injection rate is reduced, the effect that the meshing surface always keeps sufficient oil is guaranteed, and the wear resistance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of harmonic reducers, in particular to a harmonic reducer with high wear resistance. Background Art

[0002] The harmonic reducer is mainly composed of four basic components: wave generator, flexible gear, flexible bearing, and rigid gear. The harmonic drive reducer is a gear drive that relies on the wave generator to assemble a flexible bearing to make the flexible gear produce controllable elastic deformation and mesh with the rigid gear to transmit motion and power. Applied disciplines: mechanical engineering, transmission and gear transmission. The harmonic gear drive reducer is a new type of reducer developed using the principle of planetary gear transmission.

[0003] The utility model with the publication number CN218454941U discloses a harmonic reducer, characterized in that it includes a mounting plate, a fixing seat, an outer cylinder and a motor, the mounting plate is provided with a threaded hole, the right end of the mounting plate is provided with a motor by bolts, the fixing seat is installed on the left end of the mounting plate by bolts, the outer cylinder is provided with a threaded hole, the outer cylinder is installed on the left end of the fixing seat by bolts, and the inner part of the outer cylinder is provided with internal teeth, the left end of the outer cylinder is provided with a dustproof felt, and the upper end of the outer cylinder is provided with an oil injection hole. The steel wheel of the utility model is provided with two groups of protrusions, the two groups of protrusions are distributed at an interval of 180 degrees, and rollers are installed on the protrusions by bolts. When in use, the gear shaft is driven to rotate by the motor, and the gear shaft is meshed with the steel wheel, so as to realize the rotation of the steel wheel. The rotation of the steel wheel causes the two groups of rollers to roll on the inner side of the flexible wheel. The setting of the rollers changes the traditional sliding friction into rolling friction, reduces the friction on the flexible wheel, thereby improving the wear resistance of the harmonic reducer, and after the friction is reduced, the heat generation of the harmonic reducer can also be reduced.

[0004] The prior art achieves a wear-resistant effect by setting an oil box and adding lubricating oil. However, the oil box is directly connected to the inside of the rigid gear, causing the lubricating oil to directly enter between the rigid gear and the flexible gear at one time, which easily leads to uneven oil volume on the meshing surface and poor wear resistance. Therefore, a harmonic reducer with high wear resistance is needed to meet people's needs. Utility Model Content

[0005] The purpose of the utility model is to provide a harmonic reducer with high wear resistance to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a harmonic reducer with high wear resistance, comprising a rigid gear, a flexible gear and a wave generator, wherein the wave generator is arranged in the flexible gear, the flexible gear is arranged in the rigid gear, an oil box is connected to the outer wall of the rigid gear, an oil cover is movably connected to the oil box, an oil filling hole is opened on the outer wall of the rigid gear, one end of the oil filling hole is connected to the oil box, and the other end is connected to the tooth groove of the rigid gear, a round hole locating ring and a tapered hole locating ring are respectively connected to the oil filling hole, a first tapered plug is slidably adapted in the tapered hole locating ring, and a first spring is connected between the first tapered plug and the round hole locating ring.

[0007] Preferably, a threaded hole is provided on the outer wall of the oil box, and a threaded hole is provided in the oil cover, and the threaded hole and the threaded hole are adapted to each other.

[0008] Preferably, the outer edge of the oil cover is hexagonal.

[0009] Preferably, the maximum outer diameter of the first tapered plug is smaller than the inner diameter of the oil filling hole.

[0010] Preferably, the oil cap is connected to a second spring, the second spring is connected to a spring sheet, the spring sheet is connected to a connecting rod, the connecting rod is connected to a second conical plug, and the second conical plug is inserted into the outer side of the oil cap.

[0011] Preferably, a push rod is connected to one end of the second conical plug, and one end of the push rod passes through the circular hole positioning ring and can contact the first conical plug.

[0012] The beneficial effects of the utility model are:

[0013] In the utility model, a round hole positioning ring, a tapered hole positioning ring, a first tapered plug and a first spring are additionally arranged in the oil filling hole, so that when the flexible gear and the rigid gear are meshed at the oil filling hole, the teeth of the flexible gear push the first tapered plug to move out of the tapered hole positioning ring, and the first spring is compressed, so that the lubricating oil in the oil box is automatically injected between the rigid gear and the flexible gear, thereby achieving an automatic oil filling effect, reducing the oil filling rate, and ensuring that the meshing surface always maintains a sufficient amount of oil, thereby improving the wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a harmonic reducer with high wear resistance proposed by the utility model;

[0015] Figure 2 This is a front cross-sectional structural schematic diagram of a harmonic reducer with high wear resistance proposed by the utility model;

[0016] Figure 3 A harmonic reducer with high wear resistance proposed by the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 4 This is a schematic diagram of the side cross-sectional structure of a harmonic reducer with high wear resistance proposed by the utility model;

[0018] Figure 5 A harmonic reducer with high wear resistance proposed by the utility model Figure 4 Enlarged structural diagram at B in the middle.

[0019] In the figure: 1. rigid gear; 2. flexible gear; 3. wave generator; 4. oil box; 5. oil cover; 6. oil filling hole; 7. round hole positioning ring; 8. tapered hole positioning ring; 9. first tapered plug; 10. first spring; 11. screw thread; 12. threaded hole; 13. second spring; 14. spring sheet; 15. connecting rod; 16. second tapered plug; 17. push rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-5 A harmonic reducer with high wear resistance includes a rigid gear 1, a flexible gear 2 and a wave generator 3, the wave generator 3 is arranged in the flexible gear 2, the flexible gear 2 is arranged in the rigid gear 1, an oil box 4 is connected to the outer wall of the rigid gear 1, an oil cover 5 is movably connected to the oil box 4, an oil filling hole 6 is opened on the outer wall of the rigid gear 1, one end of the oil filling hole 6 is connected to the oil box 4, and the other end is connected to the tooth groove of the rigid gear 1, a round hole locating ring 7 and a tapered hole locating ring 8 are respectively connected to the oil filling hole 6, a first tapered plug 9 is slidably adapted in the tapered hole locating ring 8, and a first spring 10 is connected between the first tapered plug 9 and the round hole locating ring 7.

[0022] By adding a round hole positioning ring 7, a tapered hole positioning ring 8, a first tapered plug 9 and a first spring 10 in the oil filling hole 6, when the flexible gear 2 is meshed with the rigid gear 1 at the oil filling hole 6, the teeth of the flexible gear 2 push the first tapered plug 9 out of the tapered hole positioning ring 8, and the first spring 10 is compressed, so that the lubricating oil in the oil box 4 is automatically injected into between the rigid gear 1 and the flexible gear 2, so as to achieve an automatic oil filling effect, reduce the oil filling rate, ensure that the meshing surface always maintains sufficient oil, and thus improve the wear resistance.

[0023] Specifically, in this embodiment, a threaded thread 11 is provided on the outer wall of the oil box 4, and a threaded hole 12 is provided in the oil cover 5. The threaded hole 12 and the threaded thread 11 are adapted to each other to ensure the connection between the oil box 4 and the oil cover 5, and to facilitate the disassembly of the oil cover 5 to achieve the purpose of adding oil to the oil box 4.

[0024] Specifically, in this embodiment, the outer edge of the oil cap 5 is hexagonal, which is convenient for manually or using a wrench to tighten the oil cap 5.

[0025] Specifically, in this embodiment, the maximum outer diameter of the first tapered plug 9 is smaller than the inner diameter of the oil injection hole 6 , and the gap between the inner wall of the oil injection hole 6 and the first tapered plug 9 provides space for the flow of lubricating oil.

[0026] Specifically, in this embodiment, the oil cover 5 is connected to a second spring 13, the second spring 13 is connected to a spring sheet 14, the spring sheet 14 is connected to a connecting rod 15, the connecting rod 15 is connected to a second conical plug 16, and the second conical plug 16 is inserted into the outer side of the oil cover 5 to achieve the addition of lubricating oil under the turntable without unscrewing the oil cover 5, and to achieve ventilation between the inside and the outside of the oil box 4 to achieve the flow effect of the lubricating oil.

[0027] Specifically, in this embodiment, a push rod 17 is connected to one end of the second conical plug 16, and one end of the push rod 17 passes through the circular hole positioning ring 7 and can contact the first conical plug 9. The first conical plug 9 moves due to the thrust of the teeth of the flexible gear 2, acting on the push rod 17 to push the second conical plug 16 out of the oil cover 5, thereby realizing the synchronous and automatic ventilation and oil filling in the oil box 4.

[0028] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A harmonic reducer with high wear resistance, comprising a rigid gear (1), a flexible gear (2) and a wave generator (3), characterized in that: The wave generator (3) is arranged in the flexible gear (2), and the flexible gear (2) is arranged in the rigid gear (1). An oil box (4) is connected to the outer wall of the rigid gear (1), and an oil cover (5) is movably connected to the oil box (4). An oil filling hole (6) is opened on the outer wall of the rigid gear (1), one end of the oil filling hole (6) is connected to the oil box (4), and the other end is connected to the tooth groove of the rigid gear (1). A round hole positioning ring (7) and a conical hole positioning ring (8) are respectively connected in the oil filling hole (6), and a first conical plug (9) is slidably adapted in the conical hole positioning ring (8), and a first spring (10) is connected between the first conical plug (9) and the round hole positioning ring (7).

2. The harmonic reducer with high wear resistance according to claim 1, characterized in that: The outer wall of the oil box (4) is provided with a screw thread (11), and the oil cover (5) is provided with a screw hole (12), and the screw hole (12) and the screw thread (11) are adapted to each other.

3. The harmonic reducer with high wear resistance according to claim 1, characterized in that: The outer edge of the oil cover (5) is hexagonal.

4. The harmonic reducer with high wear resistance according to claim 1, characterized in that: The maximum outer diameter of the first tapered plug (9) is smaller than the inner diameter of the oil injection hole (6).

5. The harmonic reducer with high wear resistance according to claim 1, characterized in that: The oil cover (5) is connected to a second spring (13), the second spring (13) is connected to a spring sheet (14), the spring sheet (14) is connected to a connecting rod (15), the connecting rod (15) is connected to a second conical plug (16), and the second conical plug (16) is inserted into the outer side of the oil cover (5).

6. A harmonic reducer with high wear resistance according to claim 5, characterized in that: One end of the second conical plug (16) is connected to a push rod (17), and one end of the push rod (17) passes through the circular hole positioning ring (7) and can contact the first conical plug (9).

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