A turntable side edge driving wheel mechanism

Abstract

The utility model discloses a turntable side edge drive wheel mechanism relates to mechanical drive technical field, including fixed frame, be equipped with movable frame in fixed frame, and movable frame slidingly connects in fixed frame, movable frame is equipped with drive motor, and the output shaft of drive motor is connected with the input end of gear reduction mechanism, and the output shaft of gear reduction mechanism passes through axle hole and is fixedly installed with drive wheel, and the back side of drive wheel cooperates with turntable side edge, movable frame both sides are all fixedly connected with mounting panel, and the middle horizontal fixed mounting of mounting panel has screw rod, and the rear end of screw rod is connected with one end of spring, and the other end of spring is fixedly installed in the back of fixed frame, the utility model discloses overcome the deficiency of prior art, through the elastic adjustment mechanism of spring, the deformation of turntable is adapted to, and movable frame can track turntable contour change in real time under the action of spring. With effective guarantee drive wheel and turntable side edge always keep optimum contact state, to guarantee the stability and precision of turntable rotation.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, specifically to a turntable side drive wheel mechanism. Background Technology

[0002] In the drive systems of large rotating equipment (such as engineering machinery rotary platforms, stage display turntables, etc.), traditional drive methods mainly fall into two technical categories:

[0003] The first type is center-driven; it directly drives the turntable's central spindle using a motor and reducer. Its advantages lie in its short transmission path and direct torque transmission. However, firstly, center-driven systems require extremely high spindle strength, and the spindle is susceptible to concentrated loads, leading to fatigue damage. Secondly, maintenance is difficult, requiring frequent inspections of central components, affecting the overall stability of the equipment. Furthermore, center-driven systems occupy space in the center of the turntable, limiting equipment layout.

[0004] Another type is the side-mounted drive type; this type rigidly mounts the drive wheel (friction wheel or gear) to the side base of the turntable, transmitting torque through friction or meshing between the drive wheel's surface and the turntable's outer circumference. While side-mounted drive simplifies the structure and reduces maintenance difficulty, the turntable is prone to radial deformation after long-term heavy loads, leading to changes in the curvature of the circumferential surface. It is also susceptible to thermal expansion and contraction due to temperature fluctuations, causing the clearance between the drive wheel and the turntable to increase or decrease. This can result in poor contact between the drive wheel and the turntable; for example, in friction drive, increased clearance leads to increased slippage; in gear drive, too small a clearance exacerbates pitting on the gear teeth, while too large a clearance generates meshing impact noise. Therefore, periodic shutdowns and manual adjustment of the drive wheel position are necessary. Furthermore, uneven wear of the drive wheel can cause unstable turntable rotation, affecting the equipment's operational accuracy. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a turntable side drive wheel mechanism. This mechanism overcomes the deficiencies of existing technologies, features a reasonable design, and utilizes a spring elastic adjustment mechanism to adaptively adapt to turntable deformation. This allows the movable frame to track real-time changes in the turntable's contour under the action of the spring. This effectively ensures that the drive wheel maintains optimal contact with the turntable side, guaranteeing the smoothness and accuracy of the turntable's rotation.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A turntable side drive wheel mechanism includes a fixed frame, a movable frame disposed within the fixed frame, the movable frame being slidably connected to the fixed frame in a front-rear direction; a drive motor is fixedly mounted on the movable frame, a shaft hole is formed on the upper surface of the movable frame, the output shaft of the drive motor is connected to the input end of a gear reducer, the output shaft of the gear reducer passes through the shaft hole and is coaxially fixedly mounted with a drive wheel, the rear side of the drive wheel cooperating with the side of the turntable;

[0008] Mounting plates are fixedly connected to both sides of the movable frame. A screw is horizontally fixedly installed in the middle of the mounting plate. One end of the screw is connected to a spring, and the other end of the spring is fixedly installed on the rear side of the fixed frame.

[0009] Preferably, a sliding block is fixedly installed on the lower surface of the movable frame, and a guide rail is fixedly installed on the upper surface of the fixed frame. The movable frame is slidably connected to the guide rail through the sliding block, and the guide rail and the spring are arranged parallel to each other.

[0010] Preferably, the mounting plate has a through hole in the middle, the screw passes through the through hole, and the outer surface of the screw is connected to two adjusting nuts by threads, the two adjusting nuts being located on the front and rear sides of the mounting plate respectively.

[0011] Preferably, a hook nut is fixedly connected to the rear end of the screw, and a hook hole is provided on the rear side of the fixing frame. The hook nut is connected to one end of the spring, and the other end of the spring is fixed to the fixing frame through the hook hole.

[0012] Preferably, the drive wheel is a friction wheel, and the surface of the friction wheel is covered with a wear-resistant rubber layer.

[0013] Preferably, the drive wheel is a gear, which meshes with a gear ring on the side of the turntable.

[0014] Preferably, the fixing frame has heat dissipation holes on its sides and bottom.

[0015] This invention provides a turntable side drive wheel mechanism, which offers the following advantages: First, the close cooperation between the drive wheel and the turntable side enables efficient turntable driving. Second, the elastic adjustment mechanism of the spring adapts to turntable deformation, allowing the movable frame to track the turntable contour changes in real time under the action of the spring, ensuring that the coaxiality error between the drive wheel trajectory and the turntable ellipse is ≤0.3mm. This effectively ensures that the drive wheel and the turntable side always maintain optimal contact, further optimizing the smoothness and accuracy of turntable rotation, and improving the overall operating efficiency and stability of the equipment. Furthermore, the same drive wheel mechanism can be applied to turntable systems of different specifications, achieving modular design, simplifying maintenance procedures, and reducing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of this utility model or the prior art will be briefly introduced below.

[0017] Figure 1 A schematic diagram of the structure of the driving wheel being a friction wheel in this utility model;

[0018] Figure 2 A schematic diagram of the structure of the drive wheel being a gear in this utility model;

[0019] Figure 3 A schematic diagram of the cross-sectional structure of this utility model;

[0020] Figure 4 Schematic diagram of the structure of this utility model when the drive motor is located above the movable frame. Figure 1 ;

[0021] Figure 5 Schematic diagram of the structure of this utility model when the drive motor is located above the movable frame. Figure 2 ;

[0022] Explanation of the labels in the diagram:

[0023] 1. Fixed frame; 2. Movable frame; 3. Drive motor; 4. Drive wheel; 5. Gear reducer; 6. Mounting plate; 7. Screw; 8. Spring; 9. Sliding block; 10. Guide rail; 11. Adjusting nut; 12. Hook nut. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] Example 1, as Figure 1-5 As shown, a turntable side drive wheel mechanism includes a fixed frame 1, a movable frame 2 disposed within the fixed frame 1, and the movable frame 2 being slidably connected to the fixed frame 1 in the front-to-back direction; a drive motor 3 is fixedly mounted on the movable frame 2, specifically, as shown... Figure 1-2 As shown, the drive motor 3 is installed inside the movable frame 2. A shaft hole is provided on the upper surface of the movable frame 2. The output shaft of the drive motor 3 is connected to the input end of the gear reducer 5. The output shaft of the gear reducer 5 passes through the shaft hole and is coaxially fixedly mounted with a drive wheel 4. The rear side of the drive wheel 4 mates with the side of the turntable. Alternatively, the drive motor 3 can be installed on top of the movable frame 2, such as... Figure 4-5 As shown, the output shaft of the drive motor 3 is connected to the input end of the gear reducer 5, and the drive wheel 4 is directly mounted on the output shaft of the gear reducer 5.

[0026] Mounting plates 6 are fixedly connected to both sides of the movable frame 2. A screw 7 is horizontally fixedly installed in the middle of the mounting plate 6. One end of a spring 8 is connected to the rear end of the screw 7, and the other end of the spring 8 is fixedly installed on the rear side of the fixed frame 1.

[0027] Working principle:

[0028] During assembly, the fixed frame 1 can be first fixedly installed on the side of the turntable, and the fixed frame 1 can be calibrated using a laser level to ensure that the direction of the force exerted by the spring 8 on the movable frame 2 is towards the center of the turntable. This ensures that the drive wheel 4 always maintains a tight fit with the outer circumference of the turntable.

[0029] In use, the drive motor 3 is controlled to rotate, which in turn drives the drive wheel 4 to rotate through the gear reducer 5. The smooth rotation of the turntable is achieved through the interaction between the drive wheel 4 and the outer circumferential surface of the turntable.

[0030] During operation, when the turntable experiences localized curvature changes due to thermal deformation or load impact, such as when the turntable side bulges outward (reduced radius of curvature), the turntable will push the drive wheel 4 radially outward, causing the entire movable frame 2 to move towards the front end of the fixed frame 1. At this time, the spring 8 will also be further stretched, allowing the drive wheel 4 to obtain greater clamping force through the elastic tension of the spring 8. This ensures that the drive wheel 4 maintains a tight fit with the turntable side while adapting to radial outward movement, effectively ensuring the stability and accuracy of the turntable rotation. When the turntable side concaves inward (increased radius of curvature), the drive wheel 4 will retract radially inward through the elastic tension of the spring 8, and the movable frame 2 will correspondingly move towards the rear end of the fixed frame 1, maintaining appropriate clamping between the drive wheel 4 and the turntable side, ensuring smooth rotation. This effectively addresses turntable deformation, maintains high-precision operation, and improves the overall performance and reliability of the equipment.

[0031] This invention firstly achieves efficient turntable driving through the tight fit between the drive wheel 4 and the turntable side. Secondly, the elastic adjustment mechanism of the spring 8 adapts to the turntable deformation, allowing the movable frame 2 to track the turntable contour changes in real time under the action of the spring 8. The coaxiality error between the drive wheel 4 trajectory and the turntable ellipse is ≤0.3mm. This effectively ensures that the drive wheel 4 and the turntable side always maintain optimal contact, further optimizing the smoothness and accuracy of turntable rotation, and improving the overall operating efficiency and stability of the equipment. Furthermore, the same drive wheel mechanism can be applied to turntable systems of different specifications, achieving modular design, simplifying maintenance procedures, and reducing costs.

[0032] In Example 2, as a further preferred embodiment of Example 1, a sliding block 9 is fixedly installed on the lower surface of the movable frame 2, and a guide rail 10 is fixedly installed on the upper surface of the fixed frame 1. The movable frame 2 is slidably connected to the guide rail 10 via the sliding block 9, and the guide rail 10 and the spring 8 are arranged parallel to each other. Therefore, through the cooperation of the sliding pair formed by the guide rail 10 and the sliding block 9, the movable frame 2 can slide smoothly along the guide rail 10 within the fixed frame 9. Furthermore, the guiding action of the guide rail 10 ensures that the movable frame 2 remains stable during the sliding process, further improving the accuracy of the fit between the drive wheel 4 and the side of the turntable.

[0033] In Example 3, as a further preferred embodiment of Example 1, a through hole is provided in the middle of the mounting plate 6, through which the screw 7 passes. Two adjusting nuts 11 are threaded onto the outer surface of the screw 7, located on the front and rear sides of the mounting plate 6 respectively. By inserting the screw 7 through the through hole in the middle of the mounting plate 6 and locking it in place with the two adjusting nuts 11, the axial position of the screw 7 can be adjusted by rotating the adjusting nuts during use. This allows for precise control of the preload of the spring 8, further optimizing the contact pressure between the drive wheel 4 and the turntable side, ensuring the stability and accuracy of the turntable rotation under different working conditions, and improving the adaptability and service life of the equipment.

[0034] In Example 4, as a further preferred embodiment of Example 3, a hook nut 12 is fixedly connected to the rear end of the screw 7. A hook hole is provided on the rear side of the mounting frame 1. The hook nut 12 is connected to one end of the spring 8, and the other end of the spring 8 is fixed to the mounting frame 1 through the hook hole. Therefore, when connecting the two ends of the spring 8 to the rear side of the mounting frame 1 and the screw 7 respectively, the adjusting nut 11 can be rotated first to bring the hook nut 12 closer to the rear side of the mounting frame 1, so that the two ends of the spring 8 can be connected to the hook hole and the hook nut 12 respectively. Then, by rotating the adjusting nut 11, the hook nut 12 is moved away from the rear side of the mounting frame 1 along the axial direction of the screw 7, thereby stretching the spring 8 to the required preload, ensuring stable contact pressure between the drive wheel 4 and the side of the turntable, and improving rotational accuracy. This design not only simplifies the installation process of spring 8, but also improves the convenience and accuracy of preload adjustment, further enhancing the operational flexibility and maintenance efficiency of the equipment. It ensures that the fit between the drive wheel 4 and the turntable side remains optimal under various complex working conditions, thereby extending the service life of the equipment and reducing maintenance costs.

[0035] In Example 5, as a further preferred embodiment of Example 1, the drive wheel 4 is a friction wheel with a wear-resistant rubber layer covering its surface. In friction drive mode, the rotation of the turntable is achieved through frictional transmission between the wear-resistant rubber layer on the drive wheel 4 and the outer circumference of the turntable. By covering the friction wheel with a wear-resistant rubber layer, not only is the friction between the drive wheel 4 and the turntable side increased, but the wear resistance of the drive wheel 4 is also enhanced, extending its service life. Simultaneously, the wear-resistant rubber layer has a certain degree of elasticity, which can compensate for minor unevenness on the turntable surface to a certain extent, ensuring that the drive wheel 4 and the turntable side always maintain a tight fit, further optimizing the stability and accuracy of the turntable rotation. When dealing with changes in the curvature of the turntable side, the elastic force of the spring 8 can ensure that the friction wheel always remains in contact with the turntable side, effectively avoiding torque fluctuations caused by intermittent friction.

[0036] In Example Six, as a further preferred embodiment of Example One, the drive wheel 4 is a gear, which meshes with a gear ring on the side of the turntable. In gear drive mode, the precise rotation of the turntable is achieved by the meshing of the teeth on the surface of the drive wheel 4 with the gear ring on the side of the turntable. Compared with friction wheel drive, gear drive has higher transmission efficiency and torque transmission capability, and is suitable for applications requiring large loads and precise control of rotation angles. Simultaneously, the meshing of the gear and gear ring effectively prevents slippage, ensuring the stability and accuracy of the turntable during rotation. Furthermore, when dealing with changes in the curvature of the turntable side, the elastic force of the spring 8 ensures that the gear remains meshed with the gear ring on the side of the turntable, effectively avoiding meshing impact noise and tooth surface pitting caused by changes in tooth backlash.

[0037] In Example 7, as a further preferred embodiment of Example 1, heat dissipation holes are provided on the sides and bottom of the fixing frame 1. These holes effectively improve the heat dissipation performance inside the fixing frame 1, ensuring that the heat generated by the drive motor 3 and gear reducer 5 during operation can be dissipated in a timely manner, preventing equipment performance degradation or malfunction due to excessive temperature.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A turntable side drive wheel mechanism, characterized in that: Includes a fixed frame (1), and a movable frame (2) is provided inside the fixed frame (1). The movable frame (2) is slidably connected to the fixed frame (1) in the front-back direction. A drive motor (3) is fixedly installed on the movable frame (2). A shaft hole is opened on the upper surface of the movable frame (2). The output shaft of the drive motor (3) is connected to the input end of the gear reducer (5). The output shaft of the gear reducer (5) passes through the shaft hole and is coaxially fixedly installed with a drive wheel (4). The rear side of the drive wheel (4) cooperates with the side of the turntable. The movable frame (2) is fixedly connected to mounting plates (6) on both sides. A screw (7) is horizontally fixedly installed in the middle of the mounting plate (6). The rear end of the screw (7) is connected to one end of a spring (8). The other end of the spring (8) is fixedly installed on the rear side of the fixed frame (1).

2. The turntable side drive wheel mechanism according to claim 1, characterized in that: A sliding block (9) is fixedly installed on the lower surface of the movable frame (2), and a guide rail (10) is fixedly installed on the upper surface of the fixed frame (1). The movable frame (2) is slidably connected to the guide rail (10) through the sliding block (9), and the guide rail (10) and the spring (8) are arranged parallel to each other.

3. The turntable side drive wheel mechanism according to claim 1, characterized in that: The mounting plate (6) has a through hole in the middle, and the screw (7) passes through the through hole. The outer surface of the screw (7) is connected to two adjusting nuts (11) by threads. The two adjusting nuts (11) are located on the front and rear sides of the mounting plate (6) respectively.

4. The turntable side drive wheel mechanism according to claim 3, characterized in that: The rear end of the screw (7) is fixedly connected to a hook nut (12), and the rear side of the fixed frame (1) is provided with a hook hole. The hook nut (12) is connected to one end of the spring (8), and the other end of the spring (8) is fixed to the fixed frame (1) through the hook hole.

5. A turntable side drive wheel mechanism according to claim 1, characterized in that: The drive wheel (4) is a friction wheel, and the surface of the friction wheel is covered with a wear-resistant rubber layer.

6. The turntable side drive wheel mechanism according to claim 1, characterized in that: The drive wheel (4) is a gear, which meshes with the gear ring on the side of the turntable.

7. The turntable side drive wheel mechanism according to claim 1, characterized in that: The fixed frame (1) has heat dissipation holes on its sides and bottom.

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