Structure of an overrunning clutch

Abstract

The utility model discloses a structure of overspeed clutch, including output flange, output flange middle part both sides are equipped with fixed flange and input pivot respectively, and the outside of fixed flange is equipped with gear cover plate, two stage ratchet and gear ring in proper order, and the outside of input pivot is equipped with primary ratchet ring and planet carrier in proper order, and one end of gear cover plate is equipped with two stage ratchet dog. The utility model has the beneficial effects that: the reducer is driven by input shaft and realizes 1:1 transmission to output flange at the beginning, when the rotating speed reaches certain numerical value, the fling block on gear cover plate is thrown out by centrifugal force, and the hooking gear cover plate rotates, and the ratchet dog on gear cover plate is hooked on the ratchet on gear ring structure, and the rotating speed of output flange is changed to the rotating speed of gear ring, and realizes new transmission ratio.

Description

Technical Field

[0001] This utility model relates to the field of motor speed change technology, specifically to the structure of an overspeed clutch. Background Technology

[0002] The existing motor speed change structure of industrial robots generally uses paired gears with a fixed reduction ratio. However, in the existing motor speed change mechanism, the reduction ratio needs to be manually adjusted to change gears or relies on electronic control, which is cumbersome to operate and causes inconvenience to use. Utility Model Content

[0003] The purpose of this invention is to provide a structure for an overspeed clutch to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a structure for an overspeed clutch, including an output flange, a fixed flange and an input shaft respectively provided on both sides of the middle part of the output flange, a shift cover plate, a secondary ratchet and a gear ring arranged sequentially on the outer side of the fixed flange, a primary ratchet ring and a planetary carrier arranged sequentially on the outer side of the input shaft, and a secondary pawl provided at one end of the shift cover plate.

[0005] In a further optimization, a sun gear is provided at one end of the fixed flange near the input shaft.

[0006] In a further optimized configuration, the shift cover is fixed to the output flange with screws.

[0007] In a further optimized configuration, the end face of the shift cover is provided with a shift plate, and the shift plate is provided with swing blocks on both sides.

[0008] In a further optimized configuration, the swing block is fixed to the shift plate via a rotating shaft.

[0009] In a further optimization, a column slider extends from the throwing block.

[0010] In a further optimization, the reversing baffle is provided with a groove, and the secondary pawl corresponds to the groove.

[0011] In a further optimized configuration, the gear ring is mounted on the output flange via a bearing, and the secondary ratchet is mounted on the gear ring. Beneficial effects

[0012] The overspeed clutch structure provided by this utility model has a reducer that initially drives the output flange through the input shaft to achieve a 1:1 transmission. When the speed reaches a certain value, the sling block on the shift cover is thrown out by centrifugal force, hooking the shift plate to rotate. This causes the pawl on the shift cover to extend and hook the ratchet on the gear ring structure, so that the speed of the output flange changes to the speed of the gear ring, thus achieving a new transmission ratio. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the planar structure of the shift cover plate of this utility model. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0015] like Figure 1-2 As shown, an overspeed clutch structure includes an output flange 10. A fixed flange 1 and an input shaft 2 are respectively provided on both sides of the middle part of the output flange 10. A shift cover plate 7, a secondary ratchet 5 and a gear ring 6 are arranged in sequence on the outer side of the fixed flange 1. A primary ratchet ring 9 and a planetary carrier 4 are arranged in sequence on the outer side of the input shaft 2. A secondary pawl 8 is provided at one end of the shift cover plate 7.

[0016] In this embodiment, a sun gear 3 is provided at one end of the fixed flange 1 near the input shaft 2.

[0017] The shift cover 7 is fixed to the output flange 10 with screws.

[0018] The shift cover 7 has a shift plate 11 on its end face, and shift blocks 13 are provided on both sides of the shift plate 11.

[0019] The swing block 13 is fixed to the shift plate 11 via the rotating shaft 12.

[0020] A column slider 14 extends from the swing block 13, which serves as a sliding mechanism. When the swing block 13 rotates around the axis, the reversing baffle 11 can rotate.

[0021] The reversing baffle 11 is provided with a groove 15, and the secondary pawl 8 corresponds to the groove 15. In the initial position, it blocks the secondary pawl on the reversing cover plate. When rotating, the pawl can be exposed from the groove.

[0022] The gear ring 6 is mounted on the output flange 10 via a bearing, and the secondary ratchet 5 is mounted on the gear ring 6. The sun gear, the planetary carrier on the input shaft, and the gear ring form a reduction mechanism. When the secondary pawl on the shift cover extends, the secondary ratchet and pawl can cooperate to achieve overspeed.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the scope of protection of this utility model.

Claims

1. The structure of an overspeed clutch, characterized in that: The output flange (10) includes a fixed flange (1) and an input shaft (2) on both sides of the middle part of the output flange (10). The fixed flange (1) is provided with a shift cover plate (7), a secondary ratchet (5) and a gear ring (6) on the outer side. The input shaft (2) is provided with a primary ratchet ring (9) and a planetary carrier (4) on the outer side. The shift cover plate (7) is provided with a secondary pawl (8) at one end.

2. The structure of the overspeed clutch according to claim 1, characterized in that: The fixed flange (1) has a sun gear (3) at one end near the input shaft (2).

3. The structure of the overspeed clutch according to claim 1, characterized in that: The shift cover (7) is fixed to the output flange (10) by screws.

4. The structure of the overspeed clutch according to claim 1, characterized in that: The shift cover (7) has a shift plate (11) on its end face, and the shift plate (11) has a swing block (13) on both sides.

5. The structure of the overspeed clutch according to claim 4, characterized in that: The sling block (13) is fixed to the shift plate (11) by a rotating shaft (12).

6. The structure of the overspeed clutch according to claim 4, characterized in that: The sling block (13) is provided with a column slider (14).

7. The structure of the overspeed clutch according to claim 4, characterized in that: The shift plate (11) is provided with a groove (15), and the secondary pawl (8) corresponds to the groove (15).

8. The structure of the overspeed clutch according to claim 1, characterized in that: The gear ring (6) is mounted on the output flange (10) via a bearing, and the secondary ratchet (5) is mounted on the gear ring (6).

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