Transmission shaft structure

Abstract

The utility model discloses a transmission shaft structure, which relates to the technical field of transmission shafts and comprises a rotating shaft, a first synchronous pulley, a first bearing, a second synchronous pulley, a second bearing and a change gear. The first synchronous pulley is arranged at one end of the rotating shaft, the change gear is arranged at the other end of the rotating shaft, the second synchronous pulley is arranged in the middle of the rotating shaft, the first bearing is arranged on the rotating shaft and located between the first synchronous pulley and the second synchronous pulley, and the second bearing is arranged on the rotating shaft and located between the change gear and the second synchronous pulley. Through the design of flat key connection and a bearing supporting structure, radial and axial runout of the rotating shaft in the transmission process is effectively reduced, and the stability of the transmission shaft is enhanced. And the stable transmission shaft structure is beneficial to improving the machining precision of the lathe, and the requirement for high-precision machining is met. The device is reasonable in structural design, all parts are easy to disassemble and replace, and daily maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission shafts, in particular to a transmission shaft structure. Background Art

[0002] Traditional lathe drive shaft structures often suffer from issues such as low transmission efficiency and reduced precision due to loose fits between components. These issues are particularly prominent during high-speed, high-precision machining processes, severely impacting machining quality and production efficiency. Therefore, a lathe drive shaft structure with a more rational structure and more stable transmission is urgently needed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a lathe transmission shaft structure to improve the transmission efficiency and stability of the transmission shaft.

[0004] In order to solve the above technical problems, the technical solution provided by the present utility model is as follows: a transmission shaft structure, including a rotating shaft, a first synchronous pulley, a first bearing, a second synchronous pulley, a second bearing and a pulley gear;

[0005] The first synchronous pulley is arranged at one end of the rotating shaft, the hanging gear is arranged at the other end of the rotating shaft, the second synchronous pulley is arranged in the middle of the rotating shaft, the first bearing is arranged on the rotating shaft and is located between the first synchronous pulley and the second synchronous pulley, and the second bearing is arranged on the rotating shaft and is located between the hanging gear and the second synchronous pulley.

[0006] Furthermore, a first flat key is provided between the first synchronous pulley and the rotating shaft.

[0007] Furthermore, the first bearing includes a first deep groove ball bearing and a first bearing seat, the first deep groove ball bearing is sleeved on the rotating shaft, the first bearing seat is sleeved on the first deep groove ball bearing and is connected to an external support device through a first screw.

[0008] Furthermore, a second flat key is provided between the second synchronous pulley and the rotating shaft.

[0009] Furthermore, the second bearing includes a second deep groove ball bearing and a second bearing seat, the second deep groove ball bearing is sleeved on the rotating shaft, and the second bearing seat is sleeved on the second deep groove ball bearing and connected to the external support device through a second screw.

[0010] Furthermore, a third flat key is provided between the hanging wheel gear and the rotating shaft.

[0011] Furthermore, a flat washer is provided at the end of the rotating shaft on one side of the hanging gear, and a third screw is provided on the outside of the flat washer. The third screw passes through the flat washer and extends to the inside of the rotating shaft to cooperate with the flat washer to fix the hanging gear.

[0012] The advantages of this utility model compared with the prior art are:

[0013] 1. The design of the flat key connection and bearing support structure effectively reduces the radial and axial runout of the rotating shaft during transmission and enhances the stability of the transmission shaft.

[0014] 2. The stable transmission shaft structure helps to improve the machining accuracy of the lathe and meet the needs of high-precision machining.

[0015] 3. The structure of the utility model is reasonably designed, and each component is easy to disassemble and replace, which is convenient for daily maintenance and upkeep. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a transmission shaft structure of the utility model.

[0017] As shown in the figure: 1. Rotating shaft, 2. First synchronous pulley, 3. First bearing, 4. Second synchronous pulley, 5. Pulley gear, 6. First flat key, 7. First deep groove ball bearing, 8. First bearing seat, 9. First screw, 10. Second flat key, 11. Second deep groove ball bearing, 12. Second bearing seat, 13. Second screw, 14. Third flat key, 15. Flat washer, 16. Third screw, 17. Second bearing. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "vertical", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of this utility model, "first feature" or "second feature" may include one or more of these features. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being described. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of these features.

[0020] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] The transmission shaft structure of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Combined with attachment Figure 1 The specific implementation process of the transmission shaft structure of the utility model is as follows:

[0023] A transmission shaft structure mainly includes a rotating shaft 1, a first synchronous pulley 2, a first bearing 3, a second synchronous pulley 4, a pulley gear 5, and a second bearing 17. Among them, the first synchronous pulley 2 is arranged at one end of the rotating shaft 1 for connecting to an external transmission system; the pulley gear 5 is arranged at the other end of the rotating shaft 1 for cooperating with other transmission components of the lathe; the second synchronous pulley 4 is arranged in the middle of the rotating shaft 1 and acts as an intermediate transmission.

[0024] A first flat key 6 is provided between the first synchronous pulley 2 and the rotating shaft 1 , and the flat key connection ensures synchronous rotation between the two, thereby improving the stability and reliability of the transmission.

[0025] The first bearing 3 includes a first deep groove ball bearing 7 and a first bearing seat 8. The first deep groove ball bearing 7 is sleeved on the rotating shaft 1, and the first bearing seat 8 is sleeved on the first deep groove ball bearing 7 and is connected and fixed to the external support device by a first screw 9, effectively supporting and reducing the radial and axial runout of the rotating shaft 1 during the transmission process.

[0026] Similarly, a second flat key 10 is provided between the second synchronous pulley 4 and the rotating shaft 1 to ensure a tight fit and synchronous rotation between the two.

[0027] The second bearing 17 includes a second deep groove ball bearing 11 and a second bearing seat 12. Its structure is similar to that of the first bearing 3, but it is located at the other end of the rotating shaft 1. It is used to support the rotating shaft 1 on one side of the pulley gear 5 and is connected and fixed to the external support device by a second screw 13, effectively supporting and reducing the radial and axial runout of the rotating shaft 1 during the transmission process, thereby improving the stability of the overall structure.

[0028] A third flat key 14 is provided between the pulley gear 5 and the rotating shaft 1. A flat washer 15 is provided at the end of the rotating shaft 1 on the side of the pulley gear 5. A third screw 16 is provided on the outside of the flat washer 15. The third screw 16 passes through the flat washer 15 and extends into the interior of the rotating shaft 1. It cooperates with the flat washer 15 to secure the pulley gear 5 to prevent it from loosening during transmission.

[0029] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A transmission shaft structure, characterized in that: It comprises a rotating shaft (1), a first synchronous pulley (2), a first bearing (3), a second synchronous pulley (4), a second bearing (17) and a pulley gear (5); The first synchronous pulley (2) is arranged at one end of the rotating shaft (1), the hanging gear (5) is arranged at the other end of the rotating shaft (1), the second synchronous pulley (4) is arranged in the middle of the rotating shaft (1), the first bearing (3) is arranged on the rotating shaft (1) and is located between the first synchronous pulley (2) and the second synchronous pulley (4), and the second bearing (17) is arranged on the rotating shaft (1) and is located between the hanging gear (5) and the second synchronous pulley (4); A first flat key (6) is provided between the first synchronous pulley (2) and the rotating shaft (1); a second flat key (10) is provided between the second synchronous pulley (4) and the rotating shaft (1); and a third flat key (14) is provided between the hanging wheel gear (5) and the rotating shaft (1).

2. The transmission shaft structure according to claim 1, characterized in that: The first bearing (3) comprises a first deep groove ball bearing (7) and a first bearing seat (8), wherein the first deep groove ball bearing (7) is sleeved on the rotating shaft (1), and the first bearing seat (8) is sleeved on the first deep groove ball bearing (7) and connected to an external support device via a first screw (9).

3. The transmission shaft structure according to claim 2, characterized in that: The second bearing (17) includes a second deep groove ball bearing (11) and a second bearing seat (12), wherein the second deep groove ball bearing (11) is sleeved on the rotating shaft (1), and the second bearing seat (12) is sleeved on the second deep groove ball bearing (11) and connected to an external support device via a second screw (13).

4. The transmission shaft structure according to claim 3, characterized in that: A flat washer (15) is provided at the end of the rotating shaft (1) on one side of the hanging wheel gear (5), and a third screw (16) is provided on the outside of the flat washer (15). The third screw (16) passes through the flat washer (15) and extends to the inside of the rotating shaft (1) to cooperate with the flat washer (15) to fix the hanging wheel gear (5).

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