A transmission mechanism

Abstract

The present invention provides a transmission mechanism, including an input shaft, an output shaft, a rotating shaft A, a rotating shaft B, a transmission device A and a transmission device B. The input shaft is connected to the rotating shaft A through a sliding key, the rotating shaft A is connected to the input end of the transmission device A through a clutch A, the output end of the transmission device A is connected to the output shaft, the rotating shaft A is also connected to the rotating shaft B through a clutch B, and the rotating shaft B is connected to the output shaft through the transmission device B. The technical solution of the present invention is adopted, by making the planetary gear transmission device and the bevel gear transmission device share an output shaft, so that the transmission mechanism has two power output states, the volume of the transmission mechanism is reduced, the transmission mechanism can be applied to occasions where the installation space and conditions are limited, and the manufacturing cost of the transmission mechanism is reduced. The locking sleeve realizes the interlocking of the two power outputs when switching, avoids the interference caused by the power output in the idle state, improves the transmission accuracy, and has the advantages of simple operation and high reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission mechanisms, and in particular relates to a transmission mechanism. Background Art

[0002] In order to make the mechanical transmission mechanism operate under complex working conditions, in the prior art, a power component needs to be able to adapt to multiple output working conditions at the same time, such as high-speed small torque output and low-speed high torque output. Usually, a speed change mechanism is used to make the power component meet the requirements of multiple working conditions. Especially when the power output of the robot is quite different, it is often necessary to switch the speed ratio very much so that the output of the robot can adapt to different working conditions. For example, the patent document with the publication number of "CN208268332U" discloses a multi-stage synchronous belt pulley speed change mechanism including at least three-stage synchronous belt pulley speed change mechanisms and a two-stage transmission arranged between any two-stage synchronous belt pulley speed change mechanisms, and the two-stage transmission includes a first clutch, a second clutch and a clutch control device; the clutch control device is used for the selective engagement control of the first clutch and the second clutch; in the first clutch engagement state, the speed change connection between the adjacent two-stage synchronous belt pulley speed change mechanisms and the other synchronous belt pulley speed change mechanisms is cut off and exits the speed change transmission process; in the second clutch engagement state, the adjacent two-stage synchronous belt pulley speed change mechanisms are connected with the other synchronous belt pulley speed change mechanisms, and participate in the speed change transmission process of power together. In a limited space, when the pulley diameter is limited, a multi-stage synchronous pulley speed change mechanism achieves a large speed ratio by cascading at least three stages of synchronous pulley speed change mechanisms; the technical solution disclosed in the patent document can be applied to outputting multiple power outputs through one power component. However, in the case of multiple power output states, each power output needs to be provided with a power output shaft. The more complex the operating conditions of the transmission mechanism, the more power output shafts the transmission mechanism needs to be configured, making the structure of the transmission mechanism increasingly complex and the volume increasingly large, increasing the manufacturing cost, and not applicable to some occasions where the installation space and conditions are limited. Therefore, it is necessary to simplify the transmission mechanism as much as possible when designing and developing the transmission mechanism. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a transmission mechanism.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides a transmission mechanism, comprising an input shaft, an output shaft, a rotating shaft A, a rotating shaft B, a transmission device A and a transmission device B, wherein the input shaft is connected to the rotating shaft A through a sliding key, the rotating shaft A is connected to the input end of the transmission device A through a clutch A, the output end of the transmission device A is connected to the output shaft, the rotating shaft A is also connected to the rotating shaft B through a clutch B, and the rotating shaft B is connected to the output shaft through the transmission device B.

[0006] The transmission mechanism also includes a locking sleeve, one end of which is connected to the rotating shaft A, and the other end of which is connected to the rotating shaft B via a sliding key. The locking sleeve is also connected to the output end of the transmission device A via a clutch C.

[0007] The transmission device A includes a sun gear and multiple planetary gears. The sun gear is used as the input end of the transmission device A. Each planetary gear is meshed with the sun gear and the ring gear respectively. The planetary gears are connected together through a planet carrier, and the planet carrier is used as the output end of the transmission device A.

[0008] The transmission mechanism also includes a frame, the ring gear is fixedly connected to the frame, and the planet carrier is connected to the frame via a clutch D.

[0009] A bearing A is also installed between the locking sleeve (14) and the rotating shaft A.

[0010] The transmission device B includes a gear A and a gear B, the gear A and the gear B are meshed with each other, the gear A is coaxially connected to the output shaft, and the gear B is coaxially connected to the rotating shaft B.

[0011] The gear A and the gear B are both bevel gears.

[0012] The transmission mechanism also includes a shift lever, which is connected to the rotating shaft A.

[0013] A bearing B is also installed between the shift lever and the rotating shaft A.

[0014] The clutch A and the clutch B are both spline clutches.

[0015] The beneficial effects of the present invention are as follows: by adopting the technical scheme of the present invention, when the clutch A and the clutch C are engaged by the shift lever, the clutch B and the clutch D are in a separated and disconnected state, so that the power input through the input shaft passes through the rotating shaft A, the clutch A, the sun gear, and the planetary carrier in sequence and is output by the output shaft; when the clutch A and the clutch C are separated and disconnected by the shift lever, the clutch B and the clutch D are in a coupled state, so that the power input through the input shaft passes through the rotating shaft A, the clutch B, the rotating shaft B, the gear A, and the gear B in sequence and is output by the output shaft; the present invention enables the planetary gear transmission device and the bevel gear transmission device to share an output shaft, thereby greatly simplifying the overall structure of the transmission mechanism while ensuring that one power input can output two power outputs, so that the transmission mechanism provided by the present invention can be applied to occasions where the installation space and conditions are limited, greatly reducing the volume of the transmission mechanism and reducing the manufacturing cost of the transmission mechanism. In addition, the locking sleeve realizes the interlocking of the two power outputs when switching, avoiding the interference caused by the power output in the idle state, improving the transmission accuracy, and having the advantages of simple operation and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure when the clutch A and the clutch C of the present invention are combined;

[0017] Figure 2 It is a schematic diagram of the structure of the clutch C and the clutch D of the present invention when they are combined.

[0018] In the figure: 1-input shaft, 2-sliding key, 3-bearing B, 4-rotating shaft A, 5-clutch A, 6-bearing A, 7-clutch B, 8-sliding key, 9-gear A, 10-rotating shaft B, 11-gear B, 12-output shaft, 13-clutch C, 14-locking sleeve, 15-sun gear, 16-planetary gear, 17-ring gear, 18-planet carrier, 19-clutch D, 20-shift lever. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0020] like Figure 1 , Figure 2 As shown, the present invention provides a transmission mechanism, including an input shaft 1, an output shaft 12, a rotating shaft A4, a rotating shaft B10, a transmission device A and a transmission device B, the input shaft 1 is connected to the rotating shaft A4 through a sliding key 2, the rotating shaft A4 is connected to the input end of the transmission device A through a clutch A5, the output end of the transmission device A is connected to the output shaft 12, the rotating shaft A4 is also connected to the rotating shaft B10 through a clutch B7, and the rotating shaft B10 is connected to the output shaft 12 through the transmission device B.

[0021] Furthermore, the transmission mechanism further includes a locking sleeve 14, one end of which is connected to the rotating shaft A4, and the other end of which is connected to the rotating shaft B10 via the sliding key 8. The locking sleeve 14 is also connected to the output end of the transmission device A via the clutch C13. The locking sleeve is used to achieve interlocking of the two power outputs during switching, thereby avoiding interference caused by the power output in an idle state and improving the transmission accuracy.

[0022] In addition, the transmission device A includes a sun gear 15, a ring gear 17 and a plurality of planetary gears 16, the sun gear 15 is used as the input end of the transmission device A, each planetary gear 16 is meshed with the sun gear 15 and the ring gear 17 respectively, the planetary gears 16 are connected together through a planet carrier 18, and the planet carrier 18 is used as the output end of the transmission device A. Preferably, the transmission mechanism also includes a frame, the ring gear 17 is fixedly connected to the frame, and the planetary carrier 18 is connected to the frame through a clutch D19. A bearing A6 is also installed between the locking sleeve (14) and the rotating shaft A4.

[0023] In addition, the transmission device B includes a gear A9 and a gear B11, the gear A9 and the gear B11 mesh with each other, the gear A9 is coaxially connected to the output shaft 12, and the gear B11 is coaxially connected to the rotating shaft B10. Preferably, the gear A9 and the gear B11 are both bevel gears.

[0024] In addition, the transmission mechanism also includes a shift rod 20, which is connected to the rotating shaft A4. A bearing B3 is also installed between the shift rod 20 and the rotating shaft A4. The clutch A5 and the clutch B7 are both spline clutches.

[0025] According to the technical solution of the present invention, when the clutch A and the clutch C are engaged by the shift lever, the clutch B and the clutch D are in a separated and disconnected state, so that the power input through the input shaft passes through the rotating shaft A, the clutch A, the sun gear, and the planetary carrier in sequence and is output by the output shaft; when the clutch A and the clutch C are separated and disconnected by the shift lever, the clutch B and the clutch D are in a coupled state, so that the power input through the input shaft passes through the rotating shaft A, the clutch B, the rotating shaft B, the gear A, and the gear B in sequence and is output by the output shaft; the present invention enables the planetary gear transmission device and the bevel gear transmission device to share an output shaft, thereby greatly simplifying the overall structure of the transmission mechanism while ensuring that one power input can output two power outputs, so that the transmission mechanism provided by the present invention can be applied to occasions where the installation space and conditions are limited, greatly reducing the volume of the transmission mechanism and reducing the manufacturing cost of the transmission mechanism. In addition, the locking sleeve realizes the interlocking of the two power outputs when switching, avoiding the interference caused by the power output in the idle state, improving the transmission accuracy, and having the advantages of simple operation and high reliability.

Claims

1. A transmission mechanism, characterized in that: The invention comprises an input shaft (1), an output shaft (12), a rotating shaft A (4), a rotating shaft B (10), a transmission device A and a transmission device B, wherein the input shaft (1) is connected to the rotating shaft A (4) via a sliding key (2), the rotating shaft A (4) is connected to the input end of the transmission device A via a clutch A (5), the output end of the transmission device A is connected to the output shaft (12), the rotating shaft A (4) is also connected to the rotating shaft B (10) via a clutch B (7), the rotating shaft B (10) is connected to the output shaft (12) via the transmission device B, and the transmission mechanism further comprises a shift lever (20), which is connected to the rotating shaft A (4); The transmission mechanism further comprises a locking sleeve (14), one end of which is connected to the rotating shaft A (4), and the other end of which is connected to the rotating shaft B (10) via a sliding key (8). The locking sleeve (14) is also connected to the output end of the transmission device A via a clutch C (13). The transmission device A comprises a sun gear (15), a ring gear (17) and a plurality of planetary gears (16). The sun gear (15) serves as the input end of the transmission device A. Each planetary gear (16) is respectively meshed with the sun gear (15) and the ring gear (17). The planetary gears (16) are connected together via a planet carrier (18), and the planetary gears (16) are connected to the planet carrier (18). The planet carrier (18) serves as the output end of the transmission device A. The transmission mechanism also includes a frame. The ring gear (17) is fixedly connected to the frame. The planet carrier (18) is connected to the frame via a clutch D (19). A bearing A (6) is also installed between the locking sleeve (14) and the rotating shaft A (4). The transmission device B includes a gear A (9) and a gear B (11). The gear A (9) and the gear B (11) are meshed with each other. The gear A (9) is coaxially connected to the output shaft (12). The gear B (11) is coaxially connected to the rotating shaft B (10). A bearing B (3) is also installed between the shift lever (20) and the rotating shaft A (4).

2. The transmission mechanism according to claim 1, characterized in that: The gear A (9) and the gear B (11) are both bevel gears.

3. The transmission mechanism according to claim 1, characterized in that: The clutch A (5) and the clutch B (7) are both spline clutches.

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