Speed ratio switching type strain wave gear device

Abstract

The utility model discloses a speed ratio switching type wave gear device, and relates to the technical field of wave gears, the speed ratio switching type wave gear device comprises a fixed frame, an input rotating shaft is rotatably inserted in the fixed frame, the outer surface of the input rotating shaft is fixedly sleeved with driving gears, the number of the driving gears is three, the sizes of the three driving gears are different, and the driving gears are arranged in the fixed frame. A switching device is slidably arranged in the fixed frame and comprises a moving plate, the moving plate is slidably arranged in the fixed frame, a limiting rod rotatably penetrates through the moving plate, a driven gear fixedly sleeves the outer surface of the limiting rod, the driving gear and the driven gear are matched for use, a sliding rod is movably inserted in the fixed frame, and the sliding rod is movably inserted in the fixed frame. And one first motor is started, then a lead screw rotates to drive a sleeve to move, a fixed rod is driven to move, then a movable plate drives a driven gear to be meshed with an adaptive driving gear, the rotating speed of an output rotating shaft can be adjusted, and therefore the practicability of the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wave gears, in particular to a speed ratio switching wave gear device. Background Art

[0002] Wave gear devices have the characteristics of being small and light, having high rotation accuracy, high load capacity, and high reduction ratio, so they can be used in industrial robots, CNC machine tools, etc. The speed ratio required for a wave gear device varies depending on its application, so products with different speed ratios are prepared.

[0003] However, the existing wave gear device is not convenient for switching the output shaft speed according to the required speed ratio during use, which reduces the practicality. In view of the above problem, the inventor proposes a speed ratio switching wave gear device to solve the above problem. Utility Model Content

[0004] In order to solve the problem that it is inconvenient to adjust the rotation speed of the output shaft according to different speed ratios required; the purpose of the utility model is to provide a speed ratio switching wave gear device.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a speed ratio switching wave gear device, comprising a fixed frame, an input shaft is rotatably inserted in the fixed frame, a driving gear is fixedly sleeved on the outer surface of the input shaft, the number of the driving gears is three, and the three driving gears are of different sizes, a switching device is slidably provided in the fixed frame, the switching device comprises a moving plate, the moving plate is slidably arranged in the fixed frame, the moving plate rotates inside and penetrates a limit rod, a driven gear is fixedly sleeved on the outer surface of the limit rod, the driving gear and the driven gear are used in conjunction with each other, a sliding rod is movably inserted in the fixed frame, the sliding rod is movably inserted in the limit rod, and the sliding rod slides inside An output shaft is inserted, a fixing plate is fixedly provided on the top surface of the fixing frame, a first motor is installed on one side of the fixing plate, a screw is fixedly provided on the output end of the first motor, a sleeve is threadedly sleeved on the outer surface of the screw, a fixing rod is fixedly provided on the top surface of the movable plate, and the fixing rod is fixedly connected to the sleeve, and by turning on one of the first motors, the screw is rotated to drive the sleeve to move, and the fixing rod is driven to move, so that the movable plate drives the driven gear to mesh with the matching driving gear, and the speed of the output shaft can be adjusted, thereby improving the practicality of the device. When the largest driving gear on the outer surface of the input shaft meshes with the smallest driven gear, the output shaft speed driven is faster;

[0006] When the slide bar is inserted into the slot, the inclined block is pressed upward, and the iron block is pressed against the spring. When the inclined block overlaps with the inclined slot, the inclined block is stuck in the inclined slot under the action of the spring, so that the slide bar can be fixed, so that the slide bar is driven to rotate when the limit rod rotates. When a different driven gear needs to be replaced, the electromagnet is turned on to absorb the iron block, so that the inclined block is separated from the inclined slot, so that the disassembly between the limit rod and the slide bar is convenient, and the driven gear is replaced.

[0007] By turning on the second motor, the threaded rod drives the connecting plate to drive the sliding rod to slide on the outer surface of the output shaft, so that the position of the sliding rod can be adjusted according to the position of different limit rods replaced, so that the sliding rod is inserted into the limit rod, and the fixed strip is set to rotate the sliding rod and drive the output shaft to rotate at the same time.

[0008] Preferably, a shell is fixedly provided on the outer surface of the limit rod, an electromagnet is installed in the shell, an iron block is slidably provided in the shell, a spring is fixedly connected between the electromagnet and the iron block, an inclined block is fixedly provided on the bottom surface of the iron block, an inclined groove is provided in the sliding rod, the inclined block is clamped in the inclined groove, a slot is provided in the limit rod, and the sliding rod is movably inserted in the slot.

[0009] Preferably, a transmission device is fixedly provided on one side of the fixed frame, and the transmission device includes a horizontal plate, a vertical plate is fixedly provided on the top surface of the horizontal plate, a second motor is fixedly installed on one side of the vertical plate, a threaded rod is fixedly provided on the output end of the second motor, a connecting plate is fixedly sleeved on the outer surface of the sliding rod, and the connecting plate is threadedly sleeved on the outer surface of the threaded rod, the output shaft rotates and passes through the vertical plate, a sliding groove is provided in the output shaft, a fixing bar is fixedly provided in the sliding rod, the fixing bar is slidably provided in the sliding groove, a groove is provided in the shell, and movable blocks are fixedly provided on both sides of the iron block, and the movable blocks are slidably provided in the groove.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. In the utility model, one of the first motors is turned on, so that the screw is rotated to drive the sleeve to move, and the fixed rod is driven to move, so that the moving plate drives the driven gear to mesh with the matching driving gear, so that the speed of the output shaft can be adjusted, thereby improving the practicality of the device;

[0012] 2. In the utility model, when the slide bar is inserted into the slot, the inclined block is squeezed to rise, and the iron block squeezes the spring. When the inclined block coincides with the inclined slot, the inclined block is stuck in the inclined slot under the action of the spring, so that the slide bar can be fixed, thereby driving the slide bar to rotate when the limit rod rotates. When a different driven gear needs to be replaced, the electromagnet is turned on to absorb the iron block, and then the inclined block is separated from the inclined slot, thereby facilitating the disassembly between the limit rod and the slide bar and facilitating the replacement of the driven gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 This is a partial cross-sectional structural diagram of the fixed frame of the utility model.

[0016] Figure 3 This is a schematic diagram of the input shaft structure of the utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the switching device of the utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the transmission device of the utility model.

[0019] Figure 6 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. fixed frame; 2. switching device; 3. transmission device; 11. input shaft; 12. driving gear; 13. first motor; 14. fixed plate; 15. screw rod; 16. sleeve; 21. fixed rod; 22. movable plate; 23. limit rod; 231. slot; 24. driven gear; 25. housing; 251. groove; 26. electromagnet; 27. spring; 28. iron block; 281. movable block; 29. ​​inclined block; 31. horizontal plate; 32. vertical plate; 33. second motor; 34. threaded rod; 35. connecting plate; 36. output shaft; 361. slide groove; 37. slide rod; 371. fixed bar; 372. inclined groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: Figure 1-6 As shown, the utility model provides a speed ratio switching type wave gear device, including a fixed frame 1, an input shaft 11 is rotatably inserted in the fixed frame 1, a driving gear 12 is fixedly sleeved on the outer surface of the input shaft 11, the number of the driving gears 12 is three, and the three driving gears 12 are of different sizes, a switching device 2 is slidably provided in the fixed frame 1, the switching device 2 includes a moving plate 22, the moving plate 22 is slidably arranged in the fixed frame 1, the moving plate 22 rotates and penetrates a limit rod 23, a driven gear 24 is fixedly sleeved on the outer surface of the limit rod 23, the driving gear 12 and the driven gear 24 are used in conjunction with each other, a sliding rod 37 is movably inserted in the fixed frame 1, the sliding rod 37 is movably inserted in the limit rod 23, an output shaft 36 is slidably inserted in the sliding rod 37, the top of the fixed frame 1 A fixed plate 14 is fixed on the surface, a first motor 13 is installed on one side of the fixed plate 14, a screw rod 15 is fixed on the output end of the first motor 13, a sleeve 16 is threadedly sleeved on the outer surface of the screw rod 15, a fixed rod 21 is fixed on the top surface of the movable plate 22, the fixed rod 21 is fixedly connected to the sleeve 16, one of the first motors 13 is turned on, and the screw rod 15 is rotated to drive the sleeve 16 to move, and the fixed rod 21 is driven to move, so that the movable plate 22 drives the driven gear 24 to mesh with the corresponding driving gear 12, so that the speed of the output shaft 36 can be adjusted, thereby improving the practicability of the device. When the largest driving gear 12 on the outer surface of the input shaft 11 meshes with the smallest driven gear 24, the driven output shaft 36 rotates faster.

[0023] A housing 25 is fixedly provided on the outer surface of the limit rod 23, an electromagnet 26 is installed in the housing 25, an iron block 28 is slidably provided in the housing 25, a spring 27 is fixedly connected between the electromagnet 26 and the iron block 28, an inclined block 29 is fixedly provided on the bottom surface of the iron block 28, an inclined groove 372 is provided in the slide rod 37, the inclined block 29 is clamped in the inclined groove 372, a slot 231 is provided in the limit rod 23, and the slide rod 37 is movably inserted in the slot 231;

[0024] By adopting the above technical solution, when the slide bar 37 is inserted into the slot 231, the inclined block 29 is squeezed to rise, and the iron block 28 squeezes the spring 27. When the inclined block 29 coincides with the inclined groove 372, the inclined block 29 is stuck in the inclined groove 372 under the action of the spring 27, so that the slide bar 37 can be fixed, thereby driving the slide bar 37 to rotate when the limit rod 23 rotates. When a different driven gear 24 needs to be replaced, the electromagnet 26 is turned on to absorb the iron block 28, thereby making the inclined block 29 disengage from the inclined groove 372, thereby facilitating the disassembly between the limit rod 23 and the slide bar 37 and facilitating the replacement of the driven gear 24.

[0025] A transmission device 3 is fixedly provided on one side of the fixed frame 1. The transmission device 3 includes a horizontal plate 31. A vertical plate 32 is fixedly provided on the top surface of the horizontal plate 31. A second motor 33 is fixedly installed on one side of the vertical plate 32. A threaded rod 34 is fixedly provided on the output end of the second motor 33. A connecting plate 35 is fixedly sleeved on the outer surface of the sliding rod 37. The connecting plate 35 is threadedly sleeved on the outer surface of the threaded rod 34. An output shaft 36 rotates and penetrates the vertical plate 32. A sliding groove 361 is provided in the output shaft 36. A fixing bar 371 is fixedly provided in the sliding rod 37. The fixing bar 371 is slidably provided in the sliding groove 361. A groove 251 is provided in the housing 25. Movable blocks 281 are fixedly provided on both sides of the iron block 28. The movable blocks 281 are slidably provided in the groove 251.

[0026] By adopting the above technical solution, by turning on the second motor 33, the threaded rod 34 drives the connecting plate 35 to drive the slide rod 37 to slide on the outer surface of the output shaft 36, so that the position of the slide rod 37 can be adjusted according to the position of the different limit rods 23 replaced, so that the slide rod 37 is inserted into the limit rod 23, and the fixed bar 371 is set to rotate the slide rod 37 and drive the output shaft 36 to rotate at the same time.

[0027] Working principle: by turning on one of the first motors 13, the screw rod 15 is rotated to drive the sleeve 16 to move, and the fixed rod 21 is driven to move, so that the moving plate 22 drives the driven gear 24 to mesh with the matching driving gear 12, and then the speed of the output shaft 36 can be adjusted, so as to improve the practicality of the device. When the largest driving gear 12 on the outer surface of the input shaft 11 meshes with the smallest driven gear 24, the driven output shaft 36 will rotate faster;

[0028] When the slide bar 37 is inserted into the slot 231, the inclined block 29 is pressed upward, and the iron block 28 presses the spring 27. When the inclined block 29 overlaps with the inclined slot 372, the inclined block 29 is stuck in the inclined slot 372 under the action of the spring 27, so that the slide bar 37 can be fixed, so that the slide bar 37 is driven to rotate when the limit rod 23 rotates. When a different driven gear 24 needs to be replaced, the electromagnet 26 is turned on to absorb the iron block 28, so that the inclined block 29 is separated from the inclined slot 372, so that the disassembly between the limit rod 23 and the slide bar 37 is convenient, and the driven gear 24 is convenient to replace;

[0029] By turning on the second motor 33, the threaded rod 34 drives the connecting plate 35 to drive the slide rod 37 to slide on the outer surface of the output shaft 36, so that the position of the slide rod 37 can be adjusted according to the position of the different limit rods 23 replaced, so that the slide rod 37 is inserted into the limit rod 23, and the fixed bar 371 is set so that the slide rod 37 rotates and drives the output shaft 36 to rotate at the same time.

[0030] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A speed ratio switching wave gear device, comprising a fixed frame (1), characterized in that: An input shaft (11) is rotatably inserted in the fixed frame (1), and a driving gear (12) is fixedly sleeved on the outer surface of the input shaft (11). The number of the driving gears (12) is three, and the three driving gears (12) are of different sizes. A switching device (2) is slidably provided in the fixed frame (1), and the switching device (2) comprises a moving plate (22). The moving plate (22) is slidably arranged in the fixed frame (1), and the moving plate (22) rotatably penetrates a limiting rod (23). A driven gear (24) is fixedly sleeved on the outer surface of the limiting rod (23), and the driving gear (12) and the driven gear (24) are used in coordination. A sliding rod (37) is movably inserted in the fixed frame (1), and the sliding rod (37) is movably inserted in the limiting rod (23). An output shaft (36) is slidably inserted in the sliding rod (37).

2. The speed ratio switching type wave gear device according to claim 1, characterized in that: A shell (25) is fixedly provided on the outer surface of the limit rod (23), an electromagnet (26) is installed in the shell (25), an iron block (28) is slidably provided in the shell (25), a spring (27) is fixedly connected between the electromagnet (26) and the iron block (28), an inclined block (29) is fixedly provided on the bottom surface of the iron block (28), an inclined groove (372) is provided in the slide rod (37), and the inclined block (29) is clamped in the inclined groove (372).

3. The speed ratio switching type wave gear device according to claim 1, characterized in that: A transmission device (3) is fixedly provided on one side of the fixed frame (1), and the transmission device (3) comprises a horizontal plate (31), a vertical plate (32) is fixedly provided on the top surface of the horizontal plate (31), a second motor (33) is fixedly installed on one side of the vertical plate (32), a threaded rod (34) is fixedly provided on the output end of the second motor (33), and a connecting plate (35) is fixedly sleeved on the outer surface of the sliding rod (37), and the connecting plate (35) is threadedly sleeved on the outer surface of the threaded rod (34).

4. The speed ratio switching type wave gear device according to claim 3, characterized in that: The output rotating shaft (36) rotates and penetrates the vertical plate (32); a slide groove (361) is provided in the output rotating shaft (36); a fixing bar (371) is fixedly provided in the sliding rod (37); and the fixing bar (371) is slidably arranged in the slide groove (361).

5. The speed ratio switching type wave gear device according to claim 2, characterized in that: A groove (251) is provided in the housing (25), and movable blocks (281) are fixedly provided on both sides of the iron block (28), and the movable blocks (281) are slidably arranged in the groove (251).

6. The speed ratio switching type wave gear device according to claim 1, characterized in that: A fixing plate (14) is fixedly provided on the top surface of the fixing frame (1), a first motor (13) is mounted on one side of the fixing plate (14), a screw rod (15) is fixedly provided on the output end of the first motor (13), and a sleeve (16) is threadedly sleeved on the outer surface of the screw rod (15).

7. The speed ratio switching type wave gear device according to claim 6, characterized in that: A fixing rod (21) is fixedly provided on the top surface of the movable plate (22), and the fixing rod (21) is fixedly connected to the sleeve (16).

8. The speed ratio switching type wave gear device according to claim 1, characterized in that: A slot (231) is provided in the limiting rod (23), and the sliding rod (37) is movably inserted in the slot (231).

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