Speed reducer with unloading capacity

Abstract

The speed reducer with the unloading capacity comprises a first box body and a second box body which are connected, a transmission shaft and a first worm are arranged in the first box body in a rotating mode, the transmission shaft is perpendicular to the first worm, a first worm wheel is installed on the transmission shaft, the first worm is meshed with the first worm wheel, a second worm and an output shaft are arranged in the second box body in a rotating mode, and the output shaft is meshed with the second worm. The second worm is perpendicular to the output shaft, a second worm wheel is installed on the output shaft through an unloading mechanism, the second worm is meshed with the second worm wheel, and one end of the transmission shaft is connected with one end of the second worm through a transmission piece. The unloading device is simple in structure, and unloading can be completed when the load exceeds a set value.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and more specifically, to a speed reducer with unloading capability. Background Technology

[0002] In the development of industrial transmission technology, speed reducers play a crucial role. During industrial production, various factors can lead to system overload. If overloads are not prevented in time, they can cause damage to one or more critical pieces of equipment in the power system, resulting in shutdowns and significant losses. Therefore, speed reducers need to have increased unloading capacity to provide effective overload protection. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a speed reducer with unloading capability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model discloses a speed reducer with unloading capacity, including a housing 1 and a housing 2 connected to each other. A drive shaft and a worm gear 1 are rotatably arranged inside the housing 1, and the drive shaft and the worm gear 1 are perpendicular to each other. A worm wheel 1 is installed on the drive shaft and meshes with the worm gear 1. A worm gear 2 and an output shaft are rotatably arranged inside the housing 2, and the worm gear 2 is perpendicular to the output shaft. A worm wheel 2 is installed on the output shaft through an unloading mechanism and meshes with the worm gear 2. One end of the drive shaft and one end of the worm gear 2 are connected by a transmission component.

[0006] Furthermore, the unloading mechanism includes a limiting ring mounted on the output shaft, the outer diameter of which is larger than the diameter of the output shaft. A bushing is fitted on the output shaft, one end of which abuts against the side of the limiting ring. The bushing includes a positioning ring, and a positioning groove is provided on the side of the worm gear two near the positioning ring. The positioning ring abuts against the positioning groove. A tapered sleeve is fitted on the bushing, and a tapered surface is provided on the outer circumference of the tapered sleeve. An abutting surface is provided inside the worm gear two. A butterfly spring is fitted on the bushing. The bushing also includes a threaded section, on which an adjusting ring is threadedly connected. The adjusting ring abuts against one end of the butterfly spring, and the other end of the butterfly spring abuts against the tapered sleeve. Under the action of the butterfly spring, the tapered surface abuts against the abutting surface.

[0007] Furthermore, an adjustment hole is provided at the lower part of the housing, located below the adjustment ring.

[0008] Furthermore, a bearing four is installed on each of the opposite sides inside the housing two, and the output shaft is rotatably mounted within the two bearing four.

[0009] Furthermore, a mounting base is installed on the side wall of housing two, and one of bearings three is mounted on the mounting base.

[0010] Furthermore, the transmission component includes a transmission sleeve, with a connecting hole at one end of the transmission sleeve near the transmission shaft, and one end of the transmission shaft inserted into the connecting hole. A limit groove is provided at one end of the transmission sleeve near the second worm, and a limit block is connected to the end of the second worm, with the limit block engaging in the limit groove.

[0011] Furthermore, bearings are installed on the two opposing inner walls inside the housing, and the drive shaft is rotatably mounted on the two bearings.

[0012] The beneficial effects of this utility model are: when the load exceeds the set threshold, the worm gear can disengage from the tapered sleeve to unload; after the excess load disappears, the worm gear can drive the output shaft through the tapered sleeve to complete the transmission; the structure is simple and the operation is reliable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a speed reducer with unloading capability in this embodiment;

[0014] Figure 2 This is a cross-sectional view of box two in this embodiment;

[0015] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0016] Reference numerals in the attached drawings: 1. Housing 1; 2. Housing 2; 3. Drive shaft; 4. Bearing 1; 5. Worm gear 1; 6. Worm 1; 7. Threaded section; 8. Output shaft; 9. Worm gear 2; 10. Worm 2; 11. Bearing 2; 12. Limiting seat; 13. Drive sleeve; 14. Connecting hole; 15. Limiting groove; 16. Limiting block; 17. Tapered sleeve; 18. Disc spring; 19. Adjusting ring; 20. Adjusting hole; 21. Bearing 3; 22. Mounting seat; 23. Snap ring; 24. Bearing 4; 25. Bushing; 26. Limiting ring; 27. Positioning ring; 28. Positioning groove; 29. ​​Tapered surface; 30. Abutment surface. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-3As shown, a speed reducer with unloading capacity includes a connected housing 1 and a housing 2. A worm gear 6 and a drive shaft 3 are rotatably mounted inside housing 1, with the drive shaft 3 perpendicular to the worm gear 6. A worm wheel 5 is keyed to the drive shaft 3, and the worm wheel 5 meshes with the worm gear 6. A bearing 4 is mounted on each of the opposite side walls of housing 1, and the drive shaft 3 is rotatably mounted within the two bearings 4, which provide rotational support for the drive shaft 3.

[0019] like Figure 2 , Figure 3 As shown, a worm gear 10 and an output shaft 8 are rotatably mounted inside the housing 2. The worm gear 10 and the output shaft 8 are perpendicular. A worm wheel 9 is mounted on the output shaft 8 via an unloading mechanism, and the worm wheel 9 can mesh with the worm gear 10. The unloading mechanism includes a bushing 25 keyed to the output shaft 8. A limit ring 26 is provided on the output shaft 8, and the outer diameter of the limit ring 26 is larger than the diameter of the output shaft 8. One end of the bushing 25 abuts against the side of the limit ring 26. The bushing 25 includes a positioning ring 27, which is located at the end of the bushing 25 near the limit ring 26, and the outer diameter of the positioning ring 27 is larger than the diameter of the bushing 25. A tapered sleeve 17 is fitted on the bushing 25. The outer circumferential surface of the tapered sleeve 17 is a tapered surface 29. The tapered sleeve 17 is fitted with the worm wheel 9, and the worm wheel 9 has an abutment surface 30 inside, with the tapered surface 29 and the abutment surface 30 in contact. A butterfly spring 18 is fitted onto the bushing 25. The butterfly spring 18 is located on the side of the tapered sleeve 17 away from the positioning ring 27. The bushing 25 includes a threaded section 7, located at the end of the bushing 25 away from the positioning ring 27. An adjusting ring 19 is threadedly connected to the threaded section 7. The adjusting ring 19 abuts against one end face of the butterfly spring 18, and the other end face of the butterfly spring 18 abuts against the tapered sleeve 17. A positioning groove 28 is formed on the side of the worm gear 9 near the positioning ring 27. Under the action of the butterfly spring 18, the positioning groove 28 abuts against the positioning ring 27. When the load on the output shaft 8 exceeds a set threshold, exceeding the friction between the contact surface 30 and the tapered surface 29, the worm gear 9 and the tapered sleeve 17 will no longer be linked to complete the unloading. After the excess load disappears, the worm gear 9 can again drive the output shaft 8 to rotate through the tapered sleeve 17 and the bushing 25 to complete the transmission.

[0020] An adjustment hole 20 is provided at the lower part of the housing 2, corresponding to the position below the adjustment ring 19. A toggle tool passes through the adjustment hole 20 to toggle the adjustment ring 19, thereby adjusting the degree of contraction of the disc spring 18, changing the force acting on the cone sleeve 17, and thus changing the set threshold of the load.

[0021] A bearing 24 is installed on one inner wall of housing 2. A mounting base 22 is installed on the inner wall of housing 2 opposite to the bearing 24. A bearing 21 is installed on the side of mounting base 22 closest to bearing 24. The output shaft 8 is installed in bearings 21 and 24, which provide rotational support for the output shaft 8. A retaining ring 23 is provided on housing 2. The side of mounting base 22 away from bearing 24 abuts against the retaining ring 23, thus limiting the mounting base 22 within housing 2.

[0022] Two bearings 11 are installed on the inner wall of housing 2. The two ends of worm gear 10 are rotatably mounted within bearings 11, providing rotational support for the worm gear 10. A limiting seat 12 is located on the worm gear 10 near the bearings 11. The limiting seat 12 is frustoconical in shape, with the diameter of the end of the limiting seat 12 near the bearings 11 being larger than the diameter of the end away from the bearings 11. The limiting seat 12 abuts against the bearings 11, thereby limiting the axial movement of the worm gear 10 and preventing it from moving.

[0023] One end of the drive shaft 3 extends out of housing 1, and one end of the worm gear 10 extends out of housing 2. The end of the drive shaft 3 extending out of housing 1 and the end of the worm gear 10 extending out of housing 2 are connected by a connector. Specifically, the connector includes a drive sleeve 13, which has a connecting hole 14 on the side facing the drive shaft 3. The end of the drive shaft 3 is inserted into the connecting hole 14 and connected to the drive sleeve 13 by a key. A limiting groove 15 is formed on the side of the drive sleeve 13 near the worm gear 10, and a limiting block 16 is connected to the end of the worm gear 10. The limiting block 16 is engaged in the limiting groove 15. The drive shaft 3 and the worm gear 10 are connected by the connector for transmission.

[0024] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A speed reducer with unloading capability, characterized in that, The device includes a connected housing 1 (1) and housing 2 (2). A drive shaft (3) and a worm gear (6) are rotatably arranged inside the housing 1 (1). The drive shaft (3) and the worm gear (6) are perpendicular to each other. A worm wheel (5) is installed on the drive shaft (3). The worm gear (6) meshes with the worm wheel (5). A worm gear (10) and an output shaft (8) are rotatably arranged inside the housing 2 (2). The worm gear (10) and the output shaft (8) are perpendicular to each other. A worm wheel (9) is installed on the output shaft (8) through an unloading mechanism. The worm gear (10) meshes with the worm wheel (9). One end of the drive shaft (3) and one end of the worm gear (10) are connected by a transmission component.

2. The speed reducer with unloading capability according to claim 1, characterized in that, The unloading mechanism includes a limiting ring (26) mounted on the output shaft (8), the outer diameter of which is larger than the diameter of the output shaft (8). A bushing (25) is fitted on the output shaft (8), one end of which abuts against the side of the limiting ring (26). The bushing (25) includes a positioning ring (27). A positioning groove (28) is provided on the side of the worm gear (9) near the positioning ring (27), and the positioning ring (27) abuts against the positioning groove (28). A tapered sleeve (17) is fitted on the bushing (25). The tapered sleeve (17) has a tapered surface (29) on its outer periphery, the worm gear (9) has an abutment surface (30) inside, the bushing (25) is fitted with a butterfly spring (18), the bushing (25) also includes a threaded section (7), the threaded section (7) is threaded with an adjusting ring (19), the adjusting ring (19) abuts against one end of the butterfly spring (18), the other end of the butterfly spring (18) abuts against the tapered sleeve (17), and under the action of the butterfly spring (18), the tapered surface (29) abuts against the abutment surface (30).

3. The speed reducer with unloading capability according to claim 2, characterized in that, The lower part of the housing (2) is provided with an adjustment hole (20), which is located below the adjustment ring (19).

4. A speed reducer with unloading capability according to claim 2, characterized in that, A bearing four (24) is installed on each of the opposite sides inside the housing two (2), and the output shaft (8) is rotatably disposed within the two bearing four (24).

5. A speed reducer with unloading capability according to claim 2, characterized in that, A mounting base (22) is installed on the side wall of the housing 2 (2), and one of the bearings 3 (21) is installed on the mounting base (22).

6. A speed reducer with unloading capability according to claim 1, characterized in that, The transmission component includes a transmission sleeve (13), with a connecting hole (14) at one end of the transmission sleeve (13) near the transmission shaft (3), and one end of the transmission shaft (3) is inserted into the connecting hole (14). A limiting groove (15) is provided at one end of the transmission sleeve (13) near the worm gear (10), and a limiting block (16) is connected to the end of the worm gear (10), with the limiting block (16) being inserted into the limiting groove (15).

7. A speed reducer with unloading capability according to claim 1, characterized in that, Bearings (4) are installed on the two opposing inner walls inside the housing (1), and the transmission shaft (3) is rotatably mounted on the two bearings (4).

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