High-speed planetary gear for speed reducer

Abstract

The high-speed planetary gear for the speed reducer comprises a gear ring and two planet carriers, the two planet carriers are arranged on the two opposite side edges of the gear ring respectively, the sides, away from the gear ring, of the two planet carriers are fixedly connected with cavity rods, the ends of the cavity rods are connected with sealing plates, and the sealing plates are fixedly connected with the gear ring. The end, away from the cavity rod, of the sealing plate is connected with a hollow rod through an auxiliary piece, and a plurality of hard plates and soft plates are arranged in the hollow rod. The utility model relates to the technical field of planetary gear structures. According to the high-speed planetary gear for the speed reducer, when the high-speed planetary gear is used, through cooperation of a soft plate, a hard plate and a lead core, the hollow rod can be bent at angles in multiple directions and reset rapidly so as to deal with shaking generated when a servo motor drives the hollow rod, and the situation that due to shaking of the servo motor, under the long-time working condition, the service life of the hollow rod is prolonged is avoided. And the servo motor is disconnected from the hollow rod.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear structures, in particular to a high-speed planetary gear for a speed reducer. Background Art

[0002] Planetary gear reducers, also known as planetary speed reducers or servo speed reducers, are widely used in transmission systems such as servo motors, stepper motors, and DC motors due to their numerous advantages, including compact size, high transmission efficiency, wide speed reduction range, and high precision. Their primary function is to reduce speed, increase torque, and lower the load / motor moment of inertia ratio while ensuring precise transmission.

[0003] In the prior art, a high-speed and high-efficiency planetary gear reducer proposed by publication number CN212717830U is provided. The front and rear ends of the reducer body are both equipped with connecting shafts, and the outsides of the two front and rear connecting shafts are both equipped with telescopic shafts. A planet carrier is installed on the left side of the reducer housing, and a fixed rotating shaft is integrally formed around the right side of the planet carrier. Planetary gears are installed on the fixed rotating shafts. A ring gear is installed on the right side of the reducer housing, and the inner side of the ring gear is respectively meshed with four planetary gears installed on the planet carrier. A sun gear is installed in the center of the four planetary gears, and the sun gear is also meshed with the four planetary gears. The connecting shafts at the front and rear ends of the reducer housing are respectively connected to the planet carrier and the sun gear. The utility model has a simple structure and a reasonable design. The connecting shafts at the front and rear ends of the reducer can be adjusted in length and are automatically adjusted by an internal spring to prevent the motor from shaking and disconnecting.

[0004] When this application is in use, the length of the front and rear ends of the reducer can be adjusted, and it is adjusted through the internal spring to prevent the motor from shaking and disconnecting. However, the direction of the motor-driven shaking is not fixed, and this application makes it difficult to adjust the remaining directions of the connecting shaft, thus affecting the anti-shake effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-speed planetary gear for a speed reducer, so as to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A high-speed planetary gear for a reducer, comprising a ring gear and two planetary carriers, the two planetary carriers being respectively arranged on two opposite sides of the ring gear, the two planetary carriers being fixedly connected to a cavity rod on one side away from the ring gear, the end of the cavity rod being connected to a closing plate, the end of the closing plate away from the cavity rod being connected to a hollow rod through an auxiliary part, a number of hard plates and soft plates being arranged in the hollow rod, a number of the hard plates and a number of the soft plates being stacked and connected with each other, the outer peripheral sides of the soft plates and the hard plates being connected to the inner peripheral side of the hollow rod, a lead core being further connected in the hollow rod, the soft plates and the hard plates being sleeved on the lead core.

[0008] In a preferred example, the present invention can be further configured as follows: the auxiliary part includes a rectangular rod, the rectangular rod is fixedly installed at the inner end of the cavity rod, the end of the rectangular rod is provided with a limiting rod, the limiting rod is slidably connected to the cavity rod, the end of the limiting rod passes through the sealing plate and is connected to the hollow rod, and the end of the rectangular rod extends into the limiting rod.

[0009] In a preferred example, the present invention can be further configured as follows: a spring is connected to the inner end of the cavity rod, and the end of the spring is connected to the end of the limiting rod.

[0010] In a preferred example, the present invention can be further configured as follows: the soft plate and the hollow rod are both made of rubber or silicone material, and the hard plate is made of stainless steel or aluminum alloy material.

[0011] In a preferred example, the present invention can be further configured as follows: a sun gear is provided at the inner center of the ring gear, a number of planetary gears are meshed on the outer circumference of the sun gear, the planetary gears are meshed with the inner circumference of the ring gear, the planetary carrier is connected to the planetary gears via bearings, and the sun gear and the planetary carrier are rotatably connected.

[0012] In summary, the present invention has at least one of the following beneficial technical effects:

[0013] 1. This high-speed planetary gear for a speed reducer can be used to bend the hollow rod in multiple directions through the combination of soft plates, hard plates, and lead cores, and can be quickly reset to cope with the vibration generated when the servo motor drives the hollow rod, thereby preventing the servo motor from being disconnected from the hollow rod due to the vibration of the servo motor during long-term operation.

[0014] 2. This kind of speed reducer uses a high-speed planetary gear, in which a limiting rod is slidably installed in the cavity rod, and the end of the limiting rod passes through the sealing plate and is connected to the hollow rod, so that the limiting rod can slide in the sealing plate and the cavity rod, and at the same time, the rectangular rod is inserted into the limiting rod, so that the limiting rod can be sleeved on the rectangular rod and can slide freely. When the servo motor vibrates, the servo motor is connected to the hollow rod, and the vibration of the servo motor will push the hollow rod and then push the movement of the limiting rod, so that the limiting rod slides on the rectangular stem rod, thereby alleviating the problem of reduced stability of the connection part between the planetary gear and the servo motor caused by motor vibration;

[0015] 3. This type of speed reducer uses a high-speed planetary gear. The spring is set so that when the limiting rod slides on the rectangular rod inside the cavity rod due to shaking, it will squeeze the spring, causing the spring to generate a reaction force. The reaction force of the spring is used to drive the limiting rod to return to its original position, preventing the servo motor from being disconnected from the hollow rod due to shaking after being connected;

[0016] 4. This kind of reducer uses a high-speed planetary gear, and the soft plate and hollow rod are made of rubber or silicone material, thereby ensuring the overall toughness of the hollow rod, so as to cope with the shaking force when the servo motor drives the hollow rod. The hard plate is made of stainless steel or aluminum alloy, thereby improving the overall rigidity of the hollow rod, reducing the deformation stroke of the soft plate and the hollow rod, and avoiding the hollow rod from bending at an excessively large angle, which affects the service life of the hollow rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-speed planetary gear for a reducer of the utility model.

[0019] Figure 2 The utility model is a schematic cross-sectional view of a high-speed planetary gear for a reducer.

[0020] Figure 3 For the utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0021] In the figure, 1, ring gear; 2, planet carrier; 3, cavity rod; 4, sealing plate; 5, hollow rod; 6, hard plate; 7, soft plate; 8, rectangular rod; 9, limiting rod; 10, spring; 11, sun gear; 12, planet gear; 13, lead core. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] Example:

[0024] Reference Figure 1-Figure 3 The utility model discloses a high-speed planetary gear for a reducer, comprising a ring gear 1 and two planetary carriers 2, the two planetary carriers 2 being respectively arranged on two opposite sides of the ring gear 1, the two planetary carriers 2 being fixedly connected with a cavity rod 3 on the side away from the ring gear 1, the end of the cavity rod 3 being connected with a sealing plate 4, the end of the sealing plate 4 being away from the cavity rod 3 being connected with a hollow rod 5 through an auxiliary part, a number of hard plates 6 and soft plates 7 being arranged in the hollow rod 5, a number of the hard plates 6 and a number of the soft plates 7 being stacked and connected with each other, the outer peripheral sides of the soft plates 7 and the hard plates 6 being connected to the inner peripheral side of the hollow rod 5, a lead core 13 being further connected in the hollow rod 5, the soft plate 7 and the hard plate 6 being sleeved on the lead core 13.

[0025] In this embodiment, when in use, the hollow rod 5 can be connected to the corresponding servo motor. When the servo motor shakes during rotation, the hollow rod 5 will be driven to shake synchronously, and the hard plate 6 and soft plate 7 stacked on each other will also be driven to shake. The soft plate 7 will be deformed due to the influence of the shaking, and the hard plate 6 is used to connect the two adjacent soft plates 7 to improve the rigidity of the entire hollow rod 5. Then the lead core 13 located in the center can quickly drive the soft plate 7 to reset after the soft plate 7 is deformed, thereby achieving the effect of alleviating the disconnection caused by the shaking of the servo motor during operation, thereby improving practicality.

[0026] In a further preferred embodiment of the present invention, Figure 2 As shown, the auxiliary part includes a rectangular rod 8, which is fixedly installed on the inner end of the cavity rod 3. A limiting rod 9 is provided at the end of the rectangular rod 8. The limiting rod 9 is slidably connected to the cavity rod 3. The end of the limiting rod 9 passes through the sealing plate 4 and is connected to the hollow rod 5. The end of the rectangular rod 8 extends into the limiting rod 9.

[0027] In this embodiment, the limiting rod 9 is slidably installed in the cavity rod 3, and the end of the limiting rod 9 passes through the sealing plate 4 and is connected to the hollow rod 5, so that the limiting rod 9 can slide in the sealing plate 4 and the cavity rod 3, and at the same time the rectangular rod 8 is inserted into the limiting rod 9, so that the limiting rod 9 can be sleeved on the rectangular rod 8 and can slide freely. When the servo motor vibrates, the servo motor is connected to the hollow rod 5, and the vibration of the servo motor will push the hollow rod 5 and then push the movement of the limiting rod 9, so that the limiting rod 9 slides on the rectangular stem rod, thereby alleviating the problem of reduced stability of the connection part between the planetary gear and the servo motor caused by motor vibration.

[0028] In a further preferred embodiment of the present invention, Figure 2 As shown, the inner end of the cavity rod 3 is connected to a spring 10 , and the end of the spring 10 is connected to the end of the limiting rod 9 .

[0029] In this embodiment, the spring 10 is set so that when the limiting rod 9 slides on the rectangular rod 8 in the cavity rod 3 due to shaking, the spring 10 will be squeezed, causing the spring 10 to generate a reaction force. The reaction force of the spring 10 is used to drive the limiting rod 9 to return to its original position, thereby preventing the servo motor from being disconnected from the hollow rod 5 due to shaking after being connected.

[0030] In a further preferred embodiment of the present invention, Figure 3 As shown, the soft plate 7 and the hollow rod 5 are both made of rubber or silicone, and the hard plate 6 is made of stainless steel or aluminum alloy.

[0031] In this embodiment, the soft plate 7 and the hollow rod 5 are both made of rubber or silicone material, thereby ensuring the overall toughness of the hollow rod 5, so as to cope with the shaking force when the servo motor drives the hollow rod 5. The hard plate 6 is made of stainless steel or aluminum alloy, thereby improving the overall rigidity of the hollow rod 5, reducing the deformation stroke of the soft plate 7 and the hollow rod 5, and avoiding the hollow rod 5 from bending at an excessively large angle, thereby affecting the service life of the hollow rod 5.

[0032] In a further preferred embodiment of the present invention, Figure 2 As shown, a sun gear 11 is provided at the center of the ring gear 1, and a number of planetary gears 12 are meshed on the outer circumference of the sun gear 11. The planetary gears 12 are meshed with the inner circumference of the ring gear 1, and the planetary carrier 2 is connected to the planetary gears 12 through bearings. The sun gear 11 and the planetary carrier 2 are rotationally connected.

[0033] In this embodiment, the sun gear 11 and the planetary carrier 2 are rotationally connected. When the servo motor drives the hollow rod 5 to rotate, the hollow rod 5 will drive the rectangular rod 8 to rotate through the limiting rod 9, and the rectangular rod 8 will drive the cavity rod 3 to rotate and then drive the planetary carrier 2 to rotate, so that each planetary gear 12 revolves around the sun gear 11 and then drives the planetary carrier 2 opposite the servo motor to rotate, so as to drive the subsequent gear structure to rotate, so as to facilitate the use of the reducer.

[0034] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A high-speed planetary gear for a speed reducer, comprising a ring gear (1) and two planet carriers (2), wherein the two planet carriers (2) are respectively arranged on two opposite sides of the ring gear (1), characterized in that: The two planetary carriers (2) are fixedly connected to a cavity rod (3) on one side away from the gear ring (1), and the end of the cavity rod (3) is connected to a sealing plate (4). The end of the sealing plate (4) away from the cavity rod (3) is connected to a hollow rod (5) through an auxiliary component. A number of hard plates (6) and soft plates (7) are arranged in the hollow rod (5), and a number of the hard plates (6) and a number of the soft plates (7) are arranged in a stacked manner. The outer peripheral sides of the soft plates (7) and the hard plates (6) are connected to the inner peripheral side of the hollow rod (5). A lead core (13) is also connected in the hollow rod (5), and the soft plates (7) and the hard plates (6) are both sleeved on the lead core (13).

2. A high-speed planetary gear for a speed reducer according to claim 1, characterized in that: The auxiliary component includes a rectangular rod (8), which is fixedly installed on the inner end of the cavity rod (3). A limiting rod (9) is provided at the end of the rectangular rod (8). The limiting rod (9) is slidably connected to the cavity rod (3). The end of the limiting rod (9) passes through the sealing plate (4) and is connected to the hollow rod (5). The end of the rectangular rod (8) extends into the limiting rod (9).

3. The high-speed planetary gear for a speed reducer according to claim 2, characterized in that: The inner end of the cavity rod (3) is connected to a spring (10), and the end of the spring (10) is connected to the end of the limiting rod (9).

4. The high-speed planetary gear for a speed reducer according to claim 3, characterized in that: The soft plate (7) and the hollow rod (5) are both made of rubber or silicone material, and the hard plate (6) is made of stainless steel or aluminum alloy material.

5. The high-speed planetary gear for a speed reducer according to claim 4, characterized in that: A sun gear (11) is provided at the inner center of the gear ring (1), a plurality of planetary gears (12) are meshed on the outer circumference of the sun gear (11), the planetary gears (12) are meshed with the inner circumference of the gear ring (1), the planetary carrier (2) is connected to the planetary gears (12) via bearings, and the sun gear (11) and the planetary carrier (2) are rotationally connected.

Images