Precise cycloid rotary joint speed reducer

Abstract

The utility model relates to the technical field of speed reducers, and provides a precise cycloid rotary joint speed reducer which comprises an annular shell, a speed reducing mechanism and an output mechanism, and the speed reducing effect of the device can be effectively optimized through mutual cooperation of the annular shell, the speed reducing mechanism and the output mechanism. And when a servo motor is started, a worm can be driven to rotate, a rotating rod, a worm gear and a first bevel gear can rotate through rotation of the worm, the effect of first-time speed reduction is achieved, then a second bevel gear and an input shaft are driven to rotate through rotation of the first bevel gear, and the effect of second-time speed reduction is achieved. Therefore, when the servo motor is started, the input shaft can be decelerated twice, and the driven disc can perform more precise and high-quality decelerated rotation in cooperation with the movement of the eccentric bearing, the pin wheel and the cycloid disc. According to the technical scheme, the problem that the speed reduction effect needs to be optimized in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducers, and in particular to a precision cycloid rotary joint reducer. Background Art

[0002] In the field of mechanics, reducers are a very important mechanical transmission device that can reduce the speed of high-speed rotating shafts and increase output torque. As a common type of reducer, joint reducers have the advantages of compact structure, high transmission efficiency, and long service life, and are widely used in mechanical transmission.

[0003] In the prior art, there is a utility model with authorization announcement number CN207621269U, named: Precision cycloid slewing joint reducer. This device has a large number of teeth involved in meshing, which improves the load-bearing capacity and is conducive to the error equalization effect. It improves transmission accuracy while reducing processing and assembly requirements, thereby reducing the manufacturing cost of the reducer.

[0004] However, in actual use, it was found that the deceleration effect of the reducer can be further optimized to achieve a more efficient and precise deceleration function. Utility Model Content

[0005] The utility model provides a precision cycloid rotary joint reducer, which solves the problem in the related art that the deceleration effect needs to be optimized.

[0006] The technical solution of the utility model is as follows: A precision cycloid rotary joint reducer, comprising an annular shell, a reduction mechanism and an output mechanism, the reduction mechanism comprising a detachable rear cover installed on the back of the annular shell and a servo motor fixedly connected to the inner wall of the rear cover, and a worm fixedly connected to the end of the servo motor shaft, a rotatable input shaft is installed on the inner wall of the annular shell, a bracket is fixedly connected to the outer surface of the annular shell, a rotating sleeve is provided on the inner wall of the bracket, the two ends of the rotating rod are respectively fixedly connected to a worm wheel and a first bevel gear, one end of the input shaft is fixedly connected to a second bevel gear meshing with the first bevel gear, and the worm wheel meshes with the worm.

[0007] Furthermore, the outer surface of the rear cover is provided with evenly distributed heat dissipation openings, and the heat dissipation openings are located on a side away from the servo motor. The heat dissipation openings can provide ventilation, thereby preventing the interior of the rear cover from overheating.

[0008] Furthermore, two eccentric bearings are fixedly connected to the outer surface of the input shaft, and a cycloid disk is installed on the outer surface of each eccentric bearing. By providing the eccentric bearings, the cycloid disk can be driven to move by the eccentric bearings when the input shaft rotates, thereby facilitating further transmission work.

[0009] Furthermore, the inner wall of the annular shell is installed with evenly distributed pin wheels, and the two cycloid disks are respectively meshed with a plurality of pin wheels. By arranging the pin wheels, the cycloid disks can move more smoothly when the input shaft rotates.

[0010] Furthermore, the output mechanism includes an output shell installed on one side of the annular shell, the output shell is located outside the cycloid disk, and an output bearing is installed on the inner wall of the output shell. By setting the output bearing, one side of the annular shell can be protected for easy use.

[0011] Furthermore, a driven disk is installed on the inner wall of the output bearing, and a side surface of the driven disk is installed with evenly distributed low-speed shafts. The outer surfaces of several of the low-speed shafts are respectively adapted to the inner walls of the two cycloid disks. Through the arranged low-speed shafts, the driven disk can be driven to rotate in the inner wall of the output bearing through the movement of the two cycloid disks.

[0012] Furthermore, a detachable output shaft is installed on a side of the driven disk away from the cycloid disk, and the output shaft can be easily connected to an external device.

[0013] Furthermore, evenly distributed installation grooves are provided on a side of the driven disk away from the cycloid disk, and the installation grooves can be provided so that the device can be installed and connected to a variety of different external devices.

[0014] The working principle and beneficial effects of the utility model are:

[0015] 1. In the utility model, the annular shell, the reduction mechanism and the output mechanism are arranged to cooperate with each other, so that the reduction effect of the device can be effectively optimized, thereby achieving more efficient and precise reduction work. When the servo motor is started, the worm can be driven to rotate, and the rotation of the worm can make the rotating rod, the worm wheel and the first bevel gear rotate to achieve the effect of the first reduction. Then, the rotation of the first bevel gear can drive the second bevel gear and the input shaft to rotate. Therefore, when the servo motor is started, the input shaft can be subjected to the effect of two reductions, and in conjunction with the movement of the eccentric bearing, the pin wheel and the cycloid disk, the driven disk can be subjected to more precise and high-quality reduction rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a rear view structural diagram of the utility model;

[0019] Figure 3This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 4 It is a partial rear view structural schematic diagram of the utility model;

[0021] Figure 5 It is a partial front view structural schematic diagram of the utility model;

[0022] Figure 6 This is a schematic diagram of the output housing structure of the utility model.

[0023] In the figure: 1. housing; 2. reduction mechanism; 201. rear cover; 202. servo motor; 203. worm; 204. rotating rod; 205. worm wheel; 206. first bevel gear; 207. bracket; 208. input shaft; 209. second bevel gear; 210. heat dissipation port; 3. output mechanism; 301. output housing; 302. output bearing; 303. driven disk; 304. low-speed shaft; 305. output rotating shaft; 306. mounting groove; 4. eccentric bearing; 5. needle wheel; 6. cycloid disk. DETAILED DESCRIPTION

[0024] The following will be combined with 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 of 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.

[0025] Example 1

[0026] like Figure 1 to Figure 5 As shown, this embodiment proposes a precision cycloid rotary joint reducer, including an annular shell 1, a reduction mechanism 2 and an output mechanism 3, the reduction mechanism 2 includes a detachable rear cover 201 installed on the back of the annular shell 1, a servo motor 202 fixedly connected to the inner wall of the rear cover 201, and a worm 203 fixedly connected to the end of the rotating shaft of the servo motor 202.

[0027] The reason why the rear cover 201 is provided with a detachable connection mode is that it is convenient to carry out regular maintenance of the components on the back of the annular shell 1, thereby extending the service life of the device.

[0028] When the servo motor 202 is started, the worm 203 can be driven to rotate. A rotatable input shaft 208 is installed on the inner wall of the annular shell 1. The input shaft 208 can rotate in the inner wall of the annular shell 1 to facilitate subsequent transmission work.

[0029] A bracket 207 is fixedly connected to the outer surface of the annular shell 1. A rotating rod 204 is rotatably sleeved on the inner wall of the bracket 207. The two ends of the rotating rod 204 are respectively fixedly connected to a worm gear 205 and a first bevel gear 206.

[0030] When the worm gear 205 rotates, the first bevel gear 206 can be driven to rotate through the rotating rod 204, which is beneficial to the stable transmission work.

[0031] One end of the input shaft 208 is fixedly connected to a second bevel gear 209 meshing with the first bevel gear 206 , and the worm wheel 205 meshes with the worm 203 .

[0032] The combination of the worm 203 and the worm wheel 205 has the effect of deceleration and self-locking. The worm 203 can drive the worm wheel 205 to rotate, and the worm wheel 205 cannot drive the worm 203 to rotate in the opposite direction, so that a more stable and efficient deceleration effect can be achieved.

[0033] At the same time, the diameter of the first bevel gear 206 is smaller than the diameter of the second bevel gear 209. Therefore, when the first bevel gear 206 drives the second bevel gear 209 to rotate, a deceleration effect can be achieved. In this way, the servo motor 202 is started to drive the worm 203 to rotate, and the worm 203 drives the rotating rod 204, the worm wheel 205 and the first bevel gear 206 to rotate. Finally, the rotation of the first bevel gear 206 drives the input shaft 208 and the second bevel gear 209 to rotate, which can achieve a secondary deceleration effect, thereby facilitating more precise deceleration work by driving other components through the input shaft 208.

[0034] The outer surface of the rear cover 201 is provided with evenly distributed heat dissipation openings 210 , which are located on a side away from the servo motor 202 . The heat dissipation openings 210 can provide ventilation, thereby preventing the interior of the rear cover 201 from overheating.

[0035] Example 2

[0036] like Figure 1 to Figure 6 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the outer surface of the input shaft 208 is fixedly connected to two eccentric bearings 4, and the outer surface of each eccentric bearing 4 is installed with a cycloid disk 6. By providing the eccentric bearings 4, when the input shaft 208 rotates, the cycloid disk 6 can be driven to move through the eccentric bearings 4, which facilitates further transmission work.

[0037] The inner wall of the annular shell 1 is installed with evenly distributed pin wheels 5, and the two cycloid disks 6 are respectively meshed with a plurality of pin wheels 5. By arranging the pin wheels 5, the cycloid disks 6 can move more smoothly when the input shaft 208 rotates.

[0038] Preferably, the staff can use advanced precision processing technology and materials to improve the processing accuracy and durability of the device, and can also optimize the tooth design of the pin wheel 5 and the cycloid disk 6 to improve the meshing accuracy and reduce friction loss and noise.

[0039] When the input shaft 208 rotates one circle with the eccentric bearing 4, due to the characteristics of the tooth profile curve on the cycloid disk 6 and the limitation of the pinwheel 5, the movement of the cycloid disk 6 becomes a planar motion with both revolution and rotation. When the input shaft 208 rotates one circle in the forward direction, the eccentric bearing 4 also rotates one circle, and the cycloid disk 6 rotates in the opposite direction through a tooth difference to obtain deceleration.

[0040] The output mechanism 3 includes an output housing 301 installed on one side of the annular shell 1. The output housing 301 is located outside the cycloid disk 6. An output bearing 302 is installed on the inner wall of the output housing 301. By setting the output bearing 302, one side of the annular shell 1 can be protected for easy use.

[0041] A driven disk 303 is installed on the inner wall of the output bearing 302, and a side surface of the driven disk 303 is installed with evenly distributed low-speed shafts 304. The outer surfaces of several low-speed shafts 304 are respectively adapted to the inner walls of the two cycloid disks 6. Through the set low-speed shafts 304, the driven disk 303 can be driven to rotate in the inner wall of the output bearing 302 through the movement of the two cycloid disks 6.

[0042] The low-speed rotation of the cycloid disk 6 is transmitted to the driven disk 303 through the low-speed shaft 304, thereby obtaining a lower output speed, transmitting a larger output torque, and achieving a higher quality deceleration effect.

[0043] A detachable output shaft 305 is installed on a side of the driven disk 303 away from the cycloid disk 6 . The output shaft 305 can be conveniently connected to an external device.

[0044] A side surface of the driven disk 303 away from the cycloid disk 6 is provided with evenly distributed mounting grooves 306 . The mounting grooves 306 can be provided to enable the device to be installed and connected to a variety of different external devices.

[0045] Working principle: When in use, the rotation of the servo motor 202 can make the driven disc 303, the output shaft 305 and the mounting slot 306 obtain a lower output speed, transmit a larger output torque, and optimize the deceleration effect of the device. When the servo motor 202 is started, it will drive the worm 203 to rotate, and the rotation of the worm 203 can drive the rotating rod 204, the worm wheel 205 and the first bevel gear 206 to rotate. When the first bevel gear 206 rotates, the second bevel gear 209 can drive the input shaft 208 to rotate. The worm 203 drives the worm wheel 205 to rotate to achieve a deceleration effect. At the same time, the first bevel gear 206 drives the input shaft 208 to rotate to achieve a deceleration effect. Therefore, the rotation of the input shaft 208 driven by the servo motor 202 achieves a secondary deceleration effect. Then, the rotation of the input shaft 208 drives the two eccentric bearings 4 to rotate, and the two cycloid disks 6 are rotated through the pin wheel 5. Finally, the low-speed shaft 304 is set to drive the driven disk 303, the output shaft 305 and the mounting groove 306 to rotate, thereby achieving a higher quality deceleration work.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A precision cycloid rotary joint reducer, characterized in that: The invention comprises an annular shell (1), a speed reduction mechanism (2) and an output mechanism (3); the speed reduction mechanism (2) comprises a detachable rear cover (201) mounted on the back of the annular shell (1), a servo motor (202) fixedly connected to the inner wall of the rear cover (201), and a worm (203) fixedly connected to the end of the rotating shaft of the servo motor (202); a rotatable input shaft (208) is mounted on the inner wall of the annular shell (1); a bracket (207) is fixedly connected to the outer surface of the annular shell (1); a rotating rod (204) is rotatably sleeved on the inner wall of the bracket (207); two ends of the rotating rod (204) are respectively fixedly connected to a worm wheel (205) and a first bevel gear (206); one end of the input shaft (208) is fixedly connected to a second bevel gear (209) meshing with the first bevel gear (206); and the worm wheel (205) meshes with the worm (203).

2. A precision cycloid rotary joint reducer according to claim 1, characterized in that: The outer surface of the rear cover (201) is provided with evenly distributed heat dissipation openings (210), and the heat dissipation openings (210) are located on a side away from the servo motor (202).

3. The precision cycloid rotary joint reducer according to claim 1, characterized in that: Two eccentric bearings (4) are fixedly connected to the outer surface of the input shaft (208), and a cycloid disk (6) is installed on the outer surface of each eccentric bearing (4).

4. The precision cycloid rotary joint reducer according to claim 3, characterized in that: The inner wall of the annular shell (1) is provided with evenly distributed pin wheels (5), and the two cycloid disks (6) are respectively meshed with a plurality of pin wheels (5).

5. The precision cycloid rotary joint reducer according to claim 4, characterized in that: The output mechanism (3) comprises an output housing (301) mounted on one side of the annular shell (1); the output housing (301) is located outside the cycloid disk (6); and an output bearing (302) is mounted on the inner wall of the output housing (301).

6. The precision cycloid rotary joint reducer according to claim 5, characterized in that: A driven disk (303) is installed on the inner wall of the output bearing (302), and evenly distributed low-speed shafts (304) are installed on one side of the driven disk (303). The outer surfaces of a plurality of the low-speed shafts (304) are respectively matched with the inner walls of the two cycloid disks (6).

7. The precision cycloid rotary joint reducer according to claim 6, characterized in that: A detachable output rotating shaft (305) is mounted on a side of the driven disk (303) away from the cycloid disk (6).

8. The precision cycloid rotary joint reducer according to claim 6, characterized in that: A side surface of the driven disk (303) away from the cycloid disk (6) is provided with evenly distributed mounting grooves (306).

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