Low-noise anti-shaking planet roller structure

Abstract

The utility model discloses a low-noise anti-shaking planet roller structure, which belongs to the technical field of planet rollers and comprises a lead screw, a nut is arranged on the outer wall of the lead screw, and a connecting component is arranged between the nut and the lead screw. According to the utility model, the second external threads are arranged inside, so that during installation, the planet carrier is placed in the nut, then the installation rod at one end of the planet roller is inserted into the through hole in the planet carrier so as to be rotatably connected with the planet carrier, and the installation rod at the other end of the planet roller is limited; then the lead screw penetrates through the space between the planetary rollers, the first external threads are in threaded connection with the outer wall of the lead screw, and through the design, in the process that the lead screw rotates to drive the planetary rollers and the nut to move, the planetary rollers can be limited through the self-locking performance of threaded connection between the second external threads and the threaded ring; therefore, the situation that the planetary roller shakes in the operation process, consequently, the nut shakes, and the operation stability is affected is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of planetary roller technology, and in particular relates to a low-noise, vibration-resistant planetary roller structure. Background Technology

[0002] Planetary roller screws are mechanical transmission devices that convert rotary motion into linear motion. They combine the characteristics of threaded transmission and rolling helical transmission. Composed of planetary rollers and screws, they offer advantages such as high precision, high efficiency, and long lifespan, and can be widely used in various scenarios.

[0003] In traditional planetary roller screws, the connection between the spur gears at both ends of the planetary roller and the toothed ring inside the screw nut is generally achieved. However, due to the slippage between the spur gear and the toothed ring, the screw nut is prone to slippage during the operation of the planetary roller, which causes the entire machine to vibrate and affect the operating performance. To solve the above problems, there is an urgent need for a low-noise and vibration-resistant planetary roller structure. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that in traditional planetary roller screws, the connection between the spur gears at both ends of the planetary roller and the toothed ring inside the screw nut is generally achieved through the connection between the spur gears at both ends of the planetary roller and the toothed ring. However, due to the slippage between the spur gears and the toothed ring, the screw nut is prone to slippage during the operation of the planetary roller, which causes the entire structure to vibrate and affects the operating performance. Therefore, a low-noise and vibration-resistant planetary roller structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a low-noise and vibration-resistant planetary roller structure, including a lead screw, a lead screw nut on the outer wall of the lead screw, a connecting component between the lead screw and the lead screw, and a threaded ring fixedly connected to the inner wall of the lead screw nut.

[0006] As a further description of the above technical solution:

[0007] The connecting assembly includes a planetary roller, the outer wall of which is provided with a first external thread.

[0008] As a further description of the above technical solution:

[0009] Both ends of the planetary roller are fixedly connected to mounting rods, and the diameters of the mounting rods and the planetary rollers are different, with the diameter of the planetary rollers being larger than that of the mounting rods.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the mounting rod is provided with a second external thread, and a planetary carrier is rotatably connected to the outer wall of the mounting rod.

[0012] As a further description of the above technical solution:

[0013] The planetary roller has multiple first external threads, and the starting and ending positions of the first external threads are different depending on the installation position. One side of the first external thread is threadedly connected to the lead screw.

[0014] As a further description of the above technical solution:

[0015] One side of the second external thread is threaded to the threaded ring, and the planetary carrier is rotatably connected to it through a groove opened in the nut.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] 1. In this utility model, by providing a second external thread, during installation, the planetary carrier is placed into the screw nut, and then the mounting rod at one end of the planetary roller is inserted into the through hole in the planetary carrier to make it rotatably connected with the planetary carrier. Then, the mounting rod at the other end is limited by another planetary carrier, so that the screw passes between the planetary rollers and the first external thread is threadedly connected to the outer wall of the screw. Through this design, during the process of the screw rotating and driving the planetary roller and the screw nut to move, the self-locking property of the threaded connection between the second external thread and the threaded ring can limit the planetary roller, thereby avoiding the situation where the planetary roller shakes during operation, causing the screw nut to shake and affecting the stability of operation. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a low-noise, vibration-resistant planetary roller structure.

[0019] Figure 2 This is an exploded three-dimensional structural diagram of a low-noise, vibration-resistant planetary roller structure.

[0020] Figure 3 This is an exploded three-dimensional structural diagram of the connecting components in a low-noise, vibration-resistant planetary roller structure.

[0021] Legend:

[0022] 1. Lead screw; 2. Connecting assembly; 21. Planetary carrier; 22. Planetary roller; 23. First external thread; 24. Second external thread; 25. Mounting rod; 3. Nut; 4. Threaded ring. Detailed Implementation

[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-3 This utility model provides a technical solution: a low-noise and vibration-resistant planetary roller structure, including a lead screw 1, a lead screw nut 3 on the outer wall of the lead screw 1, a connecting component 2 between the lead screw nut 3 and the lead screw 1, and a threaded ring 4 fixedly connected to the inner wall of the lead screw nut 3.

[0025] The connecting assembly 2 includes a planetary roller 22. The outer wall of the planetary roller 22 is provided with a first external thread 23. Both ends of the planetary roller 22 are fixedly connected to mounting rods 25. The diameter of the mounting rods 25 is different from that of the planetary roller 22, and the diameter of the planetary roller 22 is larger than that of the mounting rods 25. The outer wall of the mounting rods 25 is provided with a second external thread 24. The outer wall of the mounting rods 25 is rotatably connected to a planetary carrier 21. The planetary roller 22 has multiple first external threads, and the starting and ending positions of the first external threads 23 are different depending on the installation position. One side of the first external thread 23 is threadedly connected to the lead screw 1, and one side of the second external thread 24 is threadedly connected to the threaded ring 4. The planetary carrier 21 is rotatably connected to the lead screw 3 through a groove opened in the lead screw nut 3.

[0026] The specific implementation method is as follows: During installation, the planetary carrier 21 is placed into the screw nut 3, and then the mounting rod 25 at one end of the planetary roller 22 is inserted into the through hole in the planetary carrier 21 so that it is rotatably connected with the planetary carrier 21. At the same time, it is installed according to the position of the first external thread 23 on the outer wall of the planetary roller 22, and the second external thread 24 is connected to the threaded ring 4. Then, the mounting rod 25 at the other end is limited by another planetary carrier 21, so that the screw 1 passes between the planetary rollers 22 and the first external thread 23 is connected to the thread on the outer wall of the screw 1. Thus, when the screw 1 rotates, it can drive the screw nut 3 to move through the first external thread 23 and the second external thread 24.

[0027] Working principle: During installation, the planetary carrier 21 is placed into the nut 3, and then the mounting rod 25 at one end of the planetary roller 22 is inserted into the through hole in the planetary carrier 21 to make it rotatably connected to the planetary carrier 21. At the same time, it is installed according to the position of the first external thread 23 on the outer wall of the planetary roller 22, and the second external thread 24 is connected to the threaded ring 4. Then, the mounting rod 25 at the other end is limited by another planetary carrier 21, so that the lead screw 1 passes between the planetary rollers 22 and the first external thread 23 is connected to the thread on the outer wall of the lead screw 1. Thus, when the lead screw 1 rotates, it can drive the nut 3 to move through the first external thread 23 and the second external thread 24. At the same time, the self-locking property of the threaded connection between the second external thread 24 and the threaded ring 4 limits the planetary roller 22 to prevent it from shaking during operation.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-noise, vibration-resistant planetary roller structure, comprising a lead screw (1), characterized in that: The lead screw (1) has a lead nut (3) on its outer wall, and a connecting component (2) is provided between the lead nut (3) and the lead screw (1). A threaded ring (4) is fixedly connected to the inner wall of the lead nut (3).

2. The low-noise, vibration-resistant planetary roller structure according to claim 1, characterized in that, The connecting assembly (2) includes a planetary roller (22), the outer wall of which is provided with a first external thread (23).

3. The low-noise, vibration-resistant planetary roller structure according to claim 2, characterized in that, The planetary roller (22) is fixedly connected to both ends with mounting rods (25). The mounting rods (25) have different diameters than the planetary roller (22), and the diameter of the planetary roller (22) is larger than the diameter of the mounting rods (25).

4. The low-noise, vibration-resistant planetary roller structure according to claim 3, characterized in that, The outer wall of the mounting rod (25) is provided with a second external thread (24), and the outer wall of the mounting rod (25) is rotatably connected to a planetary carrier (21).

5. The low-noise, vibration-resistant planetary roller structure according to claim 4, characterized in that, The planetary roller (22) has multiple first external threads (23) with different starting and ending positions depending on the installation position. One side of the first external thread (23) is threadedly connected to the lead screw (1).

6. The low-noise, vibration-resistant planetary roller structure according to claim 5, characterized in that, The second external thread (24) is threaded to the threaded ring (4) on one side, and the planetary carrier (21) is rotatably connected to it through the groove opened in the nut (3).

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