Gear structure
By setting a fixed mounting base at the bottom of the Geneva wheel box and improving the structure of the reducer output shaft, the problem of inaccurate gear center distance adjustment was solved, achieving high-precision and stable gear transmission, reducing noise and wear, and improving the reliability and efficiency of the equipment.
Patent Information
- Application Number
- CN202520382832.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In existing technologies, the adjustment of gear center distance relies on manual experience, which leads to inaccurate center distance and causes problems such as unstable gear meshing, noise, and bearing wear.
By setting a fixed mounting base at the bottom of the gearbox, the center distance between the first gear and the second gear is determined by the structure of the mounting base, ensuring that the center distance of the gears is the ideal value. The output shaft of the reducer is changed to a two-end support structure, reducing human error and bending deformation.
It improves the accuracy and stability of gear transmission, extends the service life of bearings, reduces noise and mechanical wear, and simplifies the installation and maintenance process.
Smart Images
Figure CN223964849U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the fields of mechanical transmission structure design and automatic mechanical design technology, and in particular to a gear structure. Background Technology
[0002] In the power input gear transmission of rotary drum molding machines in the pulp molding industry, the position of the gear in the Geneva section is fixed in the existing technology, and the center distance between the gear meshing with it and the reducer gear is adjusted by adjusting the position of the reducer base. However, this adjustment method relies entirely on the experience and intuition of the installer. In reality, the gear at the reducer end is installed using a cantilever structure, and the adjustment method for the gear center distance is not precise.
[0003] Inaccurate adjustment of the gear center distance can lead to various problems. If the center distance is too small, it can cause tooth backlash in the conjugate gears, resulting in undercut. If the center distance is too large, the backlash will be too large during gear meshing, which may cause the gears to wobble and generate noise, affecting the transmission stability. Because the gears on the reducer are cantilevered, the gear shaft end is subjected to greater force, which can easily cause vibration, accelerate bearing wear, and reduce its service life. Utility Model Content
[0004] The purpose of this invention is to solve the problem of fixing the center distance in gear transmission, especially in open gear transmission, to ensure the accuracy of the gear center distance and prevent inaccurate installation due to human factors.
[0005] To achieve the above objectives, this utility model provides a gear structure including: a reducer;
[0006] The first gear is sleeved on the output shaft of the reducer;
[0007] The second gear meshes with the first gear;
[0008] A Geneva wheel box, on which a rotating shaft is rotatably connected, and a second gear is sleeved on the rotating shaft;
[0009] The mounting base is fixedly connected to the bottom of the wheel hub box. The mounting base has a rotation space, and the output shaft of the reducer is housed in the rotation space and rotatably connected to the mounting base.
[0010] Furthermore, the pitch circle radius of the first gear is r1, the pitch circle radius of the second gear is r2, and the distance from the center of the output shaft of the reducer to the center of the rotating shaft is d, satisfying the following relationship: d = r1 + r2.
[0011] Furthermore, the output shaft of the reducer is coaxially aligned with the center of the rotation space in the mounting base.
[0012] Furthermore, the first gear is coaxially arranged with the output shaft of the reducer, and the second gear is coaxially arranged with the rotating shaft.
[0013] Furthermore, the gear structure also includes a sprocket, which is sleeved on the output shaft of the reducer, and the sprocket and the first gear are spaced apart along the extension direction of the output shaft of the reducer.
[0014] Furthermore, a gripping part is provided at the end of the mounting base away from the wheel box.
[0015] Furthermore, a bearing is rotatably connected inside the Geneva box, and the bearing is located in the rotation space and rotatably connected to the output shaft of the reducer.
[0016] Furthermore, the Geneva box includes a body, inside which an empty space is opened in the vertical direction, and a rotating shaft is rotatably connected to the body.
[0017] Compared with the prior art, the gear structure of this utility model has the following advantages: (1) By setting a fixed mounting seat at the bottom of the Geneva wheel box, the center distance between the first gear and the second gear is determined by the structure of the mounting seat, thereby avoiding the error caused by manual judgment in the traditional installation method, ensuring that the center distance of the gear is the ideal value, effectively improving the accuracy and stability of the gear transmission, and reducing the problems of tooth tipping and tooth backlash caused by center distance deviation during gear meshing.
[0018] (2) Changing the output shaft of the reducer from the traditional cantilever mounting to a structure supported at both ends significantly reduces the bending deformation of the output shaft. The rotation space in the mounting base provides a good support environment, ensuring uniform stress on the output bearing of the reducer and significantly extending its service life. It also effectively reduces mechanical wear on the output shaft caused by vibration, further ensuring the reliability of the equipment.
[0019] (3) Due to the optimized force structure of the reducer's output shaft, the vibration during system operation is significantly reduced. The fixing structure of the extended mounting base provides additional support for the gear transmission, reducing the dynamic load during transmission and thus effectively reducing operating noise.
[0020] (4) By adding a mounting base, this utility model achieves high-precision gear transmission while maintaining a compact overall structure. This application reduces installation and adjustment steps, facilitating equipment assembly and subsequent maintenance. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of an embodiment of the present utility model.
[0022] In the diagram, 1 is the speed reducer; 2 is the first gear; and 3 is the second gear.
[0023] 4. Grooved wheel box; 41. Grip section; 42. Body; 43. Empty space;
[0024] 5. Shaft;
[0025] 6. Mounting base; 61. Bearing;
[0026] 7. Sprockets. Detailed Implementation
[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0028] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] like Figure 1 As shown, a preferred embodiment of the gear structure of this utility model includes: a reducer 1;
[0031] First gear 2, first gear 2 is sleeved on the output shaft of reducer 1;
[0032] The second gear 3 meshes with the first gear 2;
[0033] Geneva wheel box 4, a rotating shaft 5 is rotatably connected to Geneva wheel box 4, and a second gear 3 is sleeved on rotating shaft 5;
[0034] Mounting base 6 is fixedly connected to the bottom of the Geneva wheel box 4. Mounting base 6 has a rotation space inside, and the output shaft of reducer 1 is housed in the rotation space and rotatably connected to mounting base 6.
[0035] Based on the above scheme, by setting a fixed mounting base 6 at the bottom of the Geneva box 4, the center distance between the first gear 2 and the second gear 3 is determined by the structure of the mounting base 6. This avoids the errors caused by manual judgment in traditional installation methods, ensuring that the gear center distance is the ideal value, effectively improving the accuracy and stability of gear transmission, and reducing tooth tipping and backlash problems caused by center distance deviation during gear meshing. The bending deformation of the output shaft of the reducer 1 is significantly reduced. The rotation space in the mounting base 6 provides a good support environment, making the output bearing 61 of the reducer 1 bear force evenly, significantly extending its service life. It also effectively reduces the mechanical wear of the output shaft of the reducer 1 caused by vibration, further ensuring the reliability of the equipment. Due to the optimized force structure of the output shaft of the reducer 1, the vibration during system operation is greatly reduced. The fixed structure of the extended part of the mounting base 6 provides additional support for the gear transmission, reducing the dynamic load during transmission, thereby effectively reducing operating noise. By adding the mounting base 6, high-precision gear transmission is achieved while maintaining a compact overall structure, reducing installation and adjustment steps, and facilitating equipment assembly and subsequent maintenance.
[0036] Preferably, the pitch circle radius of the first gear 2 is r1, the pitch circle radius of the second gear 3 is r2, and the distance from the center of the output shaft of the reducer 1 to the center of the rotating shaft 5 is d, satisfying the following relationship: d = r1 + r2.
[0037] Based on the above scheme, by optimizing the pitch circle radius r1 of the first gear 2 and the pitch circle radius r2 of the second gear 3, and ensuring that the distance d from the center of the output shaft of the reducer 1 to the center of the rotating shaft 5 satisfies d = r1 + r2, the meshing accuracy between the two gears can be guaranteed to meet the requirements. Precise geometric control ensures a stable transmission ratio during gear meshing, avoiding transmission errors caused by inappropriate meshing angles or inaccurate center distances. This not only improves transmission efficiency and reduces energy loss but also ensures stability during long-term operation.
[0038] Preferably, the output shaft of the reducer 1 is coaxially arranged with the center of the rotation space in the mounting base 6.
[0039] Based on the above solution, the coaxial arrangement reduces unnecessary friction caused by shaft misalignment, optimizes the contact between the output shaft of reducer 1 and mounting base 6, and reduces energy loss. By reducing friction and unnecessary mechanical losses, the system's transmission efficiency is improved, and the overall energy consumption of the equipment is reduced. This is particularly important for high-efficiency equipment, helping to save energy and improve the economics of the equipment.
[0040] Preferably, the first gear 2 is coaxially arranged with the output shaft of the reducer 1, and the second gear 3 is coaxially arranged with the rotating shaft 5.
[0041] Based on the above scheme, by coaxially aligning the first gear 2 with the output shaft of the reducer 1 and the second gear 3 with the rotating shaft 5, the stability of each component during operation is ensured. The coaxial design minimizes deviations during gear meshing, resulting in smoother meshing between the first gear 2 and the second gear 3. This avoids gear meshing errors caused by shaft misalignment, significantly improving transmission accuracy and enabling the entire system to maintain high efficiency and stability over a longer period.
[0042] Preferably, the gear structure further includes a sprocket 7, which is sleeved on the output shaft of the reducer 1, and the sprocket 7 and the first gear 2 are spaced apart along the extension direction of the output shaft of the reducer 1.
[0043] Based on the above scheme, the sprocket 7, the first gear 2, and the second gear 3 enable the system to have dual power transmission modes. Adding the sprocket 7 allows the entire transmission system to achieve greater power transmission within the same volume and structure, improving the power output and efficiency of the equipment. This is especially beneficial in high-power applications, enhancing the overall performance of the equipment.
[0044] Preferably, the end of the mounting base 6 away from the Geneva box 4 is provided with a gripping part 41.
[0045] Based on the above solution, a gripping part 41 is provided at the end of the mounting base 6 away from the Geneva wheel box 4, which provides better operating space and gripping points for the installation and disassembly of the equipment. The gripping part 41 makes it easier for operators to hold and fix the mounting base 6 during installation, disassembly and adjustment, reducing installation time and the possibility of misoperation caused by operational difficulties, improving the working efficiency of the equipment, reducing human operation errors, and reducing the later maintenance costs caused by improper installation.
[0046] Preferably, a bearing 61 is rotatably connected inside the Geneva wheel box 4. The bearing 61 is located in the rotation space and rotatably connected to the output shaft of the reducer 1.
[0047] Based on the above solution, by adding a rotatably connected bearing 61 inside the Geneva wheel housing 4 and placing the bearing 61 within the rotation space, the connection stability between the output shaft of the reducer 1 and the Geneva wheel housing 4 can be effectively improved. The bearing 61 provides additional support, reducing the offset or bending of the output shaft of the reducer 1, thereby maintaining the precise meshing of the first gear 2 and the second gear 3. A stable gear meshing process helps improve transmission accuracy, avoids errors and uneven friction during gear meshing, and enhances the transmission efficiency and stability of the system.
[0048] Preferably, the Geneva wheel box 4 includes a body 42, and an empty space 43 is provided inside the body 42 in the vertical direction. The rotating shaft 5 is rotatably connected to the body 42.
[0049] Based on the above solution, the weight of the Geneva wheel box 4 can be reduced by creating an empty space 43 inside the Geneva wheel box 4. Furthermore, in terms of maintenance and repair, maintenance personnel can directly inspect the internal rotating shaft 5 through this empty space 43, greatly improving maintenance efficiency, reducing equipment downtime, and thus increasing production efficiency.
[0050] In summary, this utility model embodiment provides a gear structure that, by setting a fixed mounting base 6 at the bottom of the Geneva box 4, determines the center distance between the first gear 2 and the second gear 3 by the structure of the mounting base 6. This avoids errors caused by manual judgment in traditional installation methods, ensuring that the gear center distance is the ideal value, effectively improving the accuracy and stability of gear transmission, and reducing tooth tipping and backlash problems caused by center distance deviation during gear meshing. The bending deformation of the output shaft of the reducer 1 is significantly reduced. The rotation space in the mounting base 6 provides a good support environment, making the output bearing 61 of the reducer 1 bear force evenly, significantly extending its service life. It also effectively reduces the mechanical wear of the output shaft of the reducer 1 caused by vibration, further ensuring the reliability of the equipment. Due to the optimized force structure of the output shaft of the reducer 1, the vibration during system operation is greatly reduced. The fixed structure of the extended part of the mounting base 6 provides additional support for the gear transmission, reducing the dynamic load during transmission, thereby effectively reducing operating noise. By adding the mounting base 6, high-precision gear transmission is achieved while maintaining a compact overall structure, reducing installation and adjustment steps, and facilitating equipment assembly and subsequent maintenance.
[0051] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.
Claims
1. A gear structure, characterized in that, include: Reducer (1); The first gear (2) is sleeved on the output shaft of the reducer (1); The second gear (3) meshes with the first gear (2); Geneva wheel box (4), on which a rotating shaft (5) is rotatably connected, and the second gear (3) is sleeved on the rotating shaft (5); Mounting base (6) is fixedly connected to the bottom of the Geneva wheel box (4). The mounting base (6) has a rotation space inside. The output shaft of the reducer (1) is housed in the rotation space and rotatably connected to the mounting base (6).
2. The gear structure according to claim 1, characterized in that, The pitch circle radius of the first gear (2) is r1, the pitch circle radius of the second gear (3) is r2, and the distance from the center of the output shaft of the reducer (1) to the center of the rotating shaft (5) is d, satisfying the following relationship: d = r1 + r2.
3. The gear structure according to claim 1, characterized in that, The output shaft of the reducer (1) is coaxially arranged with the center of the rotation space in the mounting base (6).
4. The gear structure according to claim 1, characterized in that, The first gear (2) is coaxially arranged with the output shaft of the reducer (1), and the second gear (3) is coaxially arranged with the rotating shaft (5).
5. The gear structure according to claim 1, characterized in that, It also includes a sprocket (7), which is sleeved on the output shaft of the reducer (1). The sprocket (7) and the first gear (2) are spaced apart along the extension direction of the output shaft of the reducer (1).
6. The gear structure according to claim 1, characterized in that, The mounting base (6) has a gripping part (41) at one end away from the Geneva box (4).
7. The gear structure according to claim 1, characterized in that, The grooved wheel box (4) is also rotatably connected to a bearing (61), which is located in the rotation space and rotatably connected to the output shaft of the reducer (1).
8. The gear structure according to claim 1, characterized in that, The grooved wheel box (4) includes a body (42), and an empty space (43) is provided inside the body (42) in the vertical direction. The rotating shaft (5) is rotatably connected to the body (42).