Backlash eccentric adjusting mechanism

Abstract

The utility model relates to a backlash eccentric adjusting mechanism. The backlash eccentric adjusting mechanism comprises a supporting seat, a rotating gear assembly and a backlash eccentric driving assembly, wherein the rotating gear assembly is rotatably connected to the supporting seat, and the backlash eccentric driving assembly is installed on the supporting seat. And the backlash eccentric driving assembly comprises a driving motor, an eccentric flange detachably installed on the supporting base and a driving gear installed on the driving motor, the driving motor is installed on the eccentric flange, and the driving gear is connected with the rotating gear assembly in a meshed mode. The eccentric flange comprises a plurality of installation holes distributed in the same circumference line, and the circle center of the circumference line and the rotation axis of the driving gear are eccentrically arranged. The driving gear is in meshed connection with the rotating gear assembly, and the center distance of the meshed position of the driving gear and the rotating gear assembly can be adjusted by adjusting the connecting angle of the mounting hole in the eccentric flange and the supporting seat, so that backlash eccentric adjustment is achieved, and adjustment is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment, in particular to a tooth gap eccentricity adjustment mechanism. Background Art

[0002] Gear transmission system is a key component of modern machinery. It transmits motion and power through gear pairs and is widely used in various equipment. However, due to errors in the manufacturing and installation process, the gears may have uneven tooth side clearance and increased wear when rotating. These problems will affect the accuracy and stability of gear transmission, thereby reducing the service life of the gears.

[0003] CT inspection of carbon components uses CT scanning to perform non-destructive testing on the internal defects of finished carbon components. It can detect dimensional deviations and morphological defects produced by carbon components during production, processing, transportation, etc., such as hole sizes or shapes that exceed design requirements, cracks in parts, and other defects.

[0004] During the CT inspection of carbon components, the inspection device needs to perform a 360° rotation inspection around the carbon component, wherein the inspection device is installed on the rotating gear assembly, and the driving wheel is meshed with the rotating gear assembly. The power motor drives the driving wheel to rotate, thereby driving the inspection device to rotate the inspection device, and the inspection device performs a 360° inspection on the carbon component. The inspection of carbon components requires smooth and uniform rotation. Due to the high requirements of working conditions, it is necessary to improve the accuracy of gear transmission and ensure the uniformity of the center distance between gears and the tooth side clearance.

[0005] The gear tooth diameter of the rotating gear assembly is large, and the gear's own accuracy is affected by the machining method and tolerances such as tooth thickness and tooth pitch. In addition, the CT detection equipment connected to the rotating gear assembly weighs about 2 tons. After long-term operation, the support seat or the external gear slewing support bearing may be slightly deformed, and there may be installation errors during the installation process, which may lead to deviations in the center distance between the rotating gear assembly and the main gear, uneven tooth side clearance, affecting the actual meshing state of the gear transmission, aggravating gear wear and reducing gear life. Technical problems, therefore, need to be improved. Utility Model Content

[0006] In order to overcome the problems existing in the related technology, the embodiment of the utility model provides a tooth clearance eccentric adjustment mechanism to solve the technical problem that the uneven tooth side clearance affects the actual meshing state of the gear transmission, aggravates gear wear and reduces gear life.

[0007] According to a first aspect of an embodiment of the utility model, there is provided a backlash eccentric adjustment mechanism, comprising a support seat, a rotating gear assembly rotatably connected to the support seat, and a backlash eccentric drive assembly mounted on the support seat, wherein the backlash eccentric drive assembly comprises a drive motor, an eccentric flange detachably mounted on the support seat, and a drive gear mounted on the drive motor, wherein the drive motor is mounted on the eccentric flange, and the drive gear is meshedly connected with the rotating gear assembly;

[0008] The eccentric flange includes a plurality of mounting holes distributed on the same circumferential line, and the center of the circumferential line is eccentrically arranged with respect to the rotation axis of the driving gear.

[0009] In one embodiment, the number of the mounting holes is 6 to 30.

[0010] In one embodiment, the eccentric flange is plug-connected to the support seat.

[0011] In one embodiment, the eccentric flange includes a mounting portion and a flange portion protruding from the mounting portion, the mounting portion is plugged into the support seat, the flange portion is locked to the support seat by a fastener, and the mounting holes are spaced around the center line of the mounting portion.

[0012] In one embodiment, a surface of the mounting portion is flush with a surface of the support seat.

[0013] In one embodiment, the output shaft of the driving motor is installed with a expansion sleeve, and the driving gear is installed on the expansion sleeve.

[0014] In one embodiment, the eccentricity between the center of the circumferential line and the axis of rotation of the driving gear is set to 1mm-10mm.

[0015] In one embodiment, the backlash eccentric drive assembly is located on the lower side of the support seat.

[0016] In one embodiment, the support base includes a mounting wall, a reinforcing plate distributed on one side of the mounting wall, and a support bracket located at the bottom of the mounting wall, the rotating gear assembly and the driving gear are distributed on one side of the mounting wall, and the driving motor is located in the surrounding area of ​​the reinforcing plate.

[0017] In one embodiment, a support bearing is provided between the support seat and the rotating gear assembly, and the gear diameter of the rotating gear assembly is 10 to 30 times the gear diameter of the driving gear.

[0018] The technical solution provided by the embodiment of the utility model can include the following beneficial effects: the driving gear and the rotating gear assembly are meshed and connected, and the center distance adjustment of the meshing position of the driving gear and the rotating gear assembly can be achieved by adjusting the connection angle between the mounting hole on the eccentric flange and the support seat, thereby achieving the eccentric adjustment of the tooth gap, and the adjustment is convenient. The eccentric flange and the support seat are detachably connected, and the overall installation position of the tooth gap eccentric driving assembly with small weight and size is adjusted, thereby achieving the eccentric adjustment of the tooth gap, and the adjustment is convenient.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0021] Figure 1 It is a schematic structural diagram of a backlash eccentricity adjustment mechanism according to an exemplary embodiment.

[0022] Figure 2 It is a schematic diagram of the front view of a tooth gap eccentricity adjustment mechanism according to an exemplary embodiment.

[0023] Figure 3 is a schematic structural diagram of an eccentric flange according to an exemplary embodiment.

[0024] Figure 4 It is a schematic structural diagram of a backlash eccentric drive assembly according to an exemplary embodiment.

[0025] In the figure, support base 10; mounting wall 11; support bracket 12; rotating gear assembly 20; external gear 21; support bearing 22; backlash eccentric drive assembly 30; drive gear 31; drive motor 32; eccentric flange 33; flange portion 331; mounting portion 332; mounting hole 333; motor hole 334; expansion sleeve 34; fastener 35. DETAILED DESCRIPTION

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it 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 the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 4 As shown, the utility model provides a tooth gap eccentricity adjustment mechanism, which can be applied to the tooth gap adjustment of CT scanning equipment or other gear mechanisms driven by gear meshing.

[0030] The backlash eccentric adjustment mechanism includes a support base 10, a rotating gear assembly 20 rotatably connected to the support base 10, and a backlash eccentric drive assembly 30 installed on the support base 10. The support base 10 is a rigid frame structure, and the rotating gear assembly 20 and the backlash eccentric drive assembly 30 are both installed on the support base 10. The rotating gear assembly 20 is a large gear structure. Preferably, the rotating gear assembly 20 includes an external gear 21, a support bearing 22 connecting the external gear 21 and the support base 10, and the external gear 21 is meshedly connected with the backlash eccentric drive assembly 30. The support bearing 22 is used to improve the rotation flexibility of the external gear 21 and bear weight.

[0031] The backlash eccentric drive assembly 30 includes a drive motor 32, an eccentric flange 33 and a drive gear 31. The eccentric flange 33 is detachably mounted on the support seat 10 to achieve a detachable connection between the backlash eccentric drive assembly 30 and the support seat 10, and facilitate adjustment of the meshing position and meshing angle of the drive gear 31. The drive motor 32 is mounted on the eccentric flange 33 and assembled to the support seat 10 along with the eccentric flange 33.

[0032] The driving gear 31 and the driving motor 32 are respectively located on both sides of the eccentric flange 33. Similarly, the driving gear 31 and the driving motor 32 are respectively located on both sides of the support seat 10. The driving gear 31 is meshed and connected with the rotating gear assembly 20. Among them, the gear diameter of the driving gear 31 is much smaller than the gear diameter of the outer gear 21, so that the detection device connected to the rotating gear assembly 20 has a lower rotation speed. Preferably, the gear diameter of the rotating gear assembly 20 is 10 times to 30 times the gear diameter of the driving gear 31. For example, the ratio of the two can be set to 10, 15, 20, 25, 30, so as to achieve different transmission ratios.

[0033] The eccentric flange 33 is used to adjust the installation angle and installation position of the driving gear 31, wherein the eccentric flange 33 includes a plurality of installation holes 333 distributed on the same circumference, and the center of the circumference is eccentrically arranged with the rotation axis of the driving gear 31. The eccentric flange 33 is locked and connected to the support seat 10 through the fastener 35 through the installation hole 333, and the driving gear 31 is installed on the eccentric flange 33 through the driving motor 32. When the installation angle of the eccentric flange 33 and the support seat 10 is adjusted by the hole position of one installation hole 333, the meshing angle of the driving gear 31 and the rotating gear assembly 20 is adjusted to achieve the eccentric adjustment of the tooth gap. Preferably, 6 to 30 installation holes 333 are provided, and the plurality of installation holes 333 are equidistantly distributed on the eccentric flange 33 to achieve the same rotation angle. Optionally, the plurality of installation holes 333 are non-equidistantly distributed on the eccentric flange 33 to achieve the local adjustment angle intensiveness and the refined adjustment of the tooth gap eccentricity.

[0034] Preferably, the eccentricity between the center of the circle and the axis of rotation of the driving gear 31 is set to d, wherein 1mm≤d≤10mm, and optionally, d is set to 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm. For example, the eccentric flange 33 is provided with 20 mounting holes 333, and is connected to the support seat 10 by fasteners 35. Each time the eccentric flange 33 rotates the position of one mounting hole 333, the rotatable angle is adjusted to: 360°÷20=18°. When the eccentricity between the center of the circle and the axis of rotation of the driving gear 31 is set to 2mm, each time the eccentric flange 33 rotates one mounting hole 333, the gear center distance of the driving gear 31 can be adjusted by 2÷360x18°=0.1mm, thereby adjusting the tooth gap according to the ratio, and can be debugged according to the on-site conditions to improve the convenience of adjustment.

[0035] Therefore, the driving gear 31 and the rotating gear assembly 20 are meshed and connected, and the center distance of the meshing position of the driving gear 31 and the rotating gear assembly 20 can be adjusted by adjusting the connection angle between the mounting hole 333 on the eccentric flange 33 and the support seat 10, thereby adjusting the tooth gap eccentricity, which is convenient to adjust. The eccentric flange 33 and the support seat 10 are detachably connected, and the tooth gap eccentricity can be adjusted by adjusting the overall installation position of the tooth gap eccentric driving assembly 30 with small weight and size, thereby adjusting the tooth gap eccentricity, which is convenient to adjust.

[0036] like Figures 1 to 4 As shown, in one embodiment, the eccentric flange 33 is plugged and connected to the support seat 10 to achieve high-precision assembly positioning. After the fastener 35 is removed, the eccentric flange 33 is rotated by a corresponding angle to adjust the tooth gap to an appropriate amount. The fastener 35 then locks the position of the eccentric flange 33 and the support seat 10, thereby achieving tooth gap adjustment.

[0037] Optionally, the eccentric flange 33 includes a mounting portion 332 and a flange portion 331 protruding from the mounting portion 332, the mounting portion 332 is cylindrical and protrudes from the flange portion 331, and mounting holes 333 are arranged on the flange portion 331, wherein the mounting holes 333 are spaced around the center line of the mounting portion 332. The support seat 10 is provided with an assembly hole, and the center line of the assembly hole is parallel to the rotation axis of the rotating gear assembly 20. The mounting portion 332 is plugged into the support seat 10, and the flange portion 331 is locked to the support seat 10 by a fastener 35. The mounting portion 332 constitutes a preliminary assembly positioning, and the flange portion 331 cooperates with the fastener 35 to achieve precise positioning, and can also adjust the axial position of the driving gear 31. A motor hole 334 is opened at the center of the mounting portion 332, and the output shaft of the driving motor passes through the motor hole 334.

[0038] Preferably, the surface of the mounting portion 332 is flush with the surface of the support seat 10, and the mounting portion 332 is embedded in the support seat 10 and is flush with the surface of the other side of the support seat 10, so as to facilitate adjustment of the axial position of the driving gear 31. In addition, the end surface of the mounting portion 332 is flush with the surface of the support seat 10, and there can be no obstacles around the connection between the driving gear 31 and the external gear 21, thereby improving the convenience of operation and debugging.

[0039] In one embodiment, the output shaft of the driving motor 32 is installed with a clamping sleeve 34, and the driving gear 31 is installed on the clamping sleeve 34. The clamping sleeve 34 is used to assemble and connect the driving motor 32 and the driving gear 31. The clamping sleeve 34 generates pressure and friction by tightening the high-strength bolts to achieve a keyless connection between the output shaft of the driving motor 32 and the driving gear 31. This connection method does not require a traditional keyway, thereby simplifying the installation process, and at the same time allows the axial installation position of the driving gear 31 to be adjusted within a certain range to obtain the best meshing effect. The design of the clamping sleeve 34 makes it easy to adjust the meshing position of the driving gear 31 and the external gear 21 during initial installation. Once adjusted to a suitable position, the clamping sleeve 34 can be locked. The clamping sleeve 34 is not limited by a fixed position, which provides greater flexibility and convenience for the assembly of the gear. The clamping sleeve 34 is particularly suitable for occasions that need to withstand heavy loads, where the weight of the detection device is large, and the use of the clamping sleeve 34 can transmit a large torque and axial force. In addition, the tension sleeve relies on friction transmission and will not produce wear during operation. It can protect the equipment from damage when overloaded, thereby ensuring the stability of operation and the long-term reliability of the equipment.

[0040] Further, the backlash eccentric drive assembly 30 is located at the lower side of the support seat 10. The backlash eccentric drive assembly 30 is located below the central axis of the rotating gear assembly 20, so that it can be closely meshed with the external gear 21 and maintain a suitable contact force to reduce the backlash.

[0041] like Figure 1 to Figure 2 As shown, in one embodiment, the support base 10 includes a mounting wall 11, a reinforcing plate distributed on one side of the mounting wall 11, and a support bracket 12 located at the bottom of the mounting wall 11, the rotating gear assembly 20 and the driving gear 31 are distributed on one side of the mounting wall 11, and the driving motor 32 is located in the surrounding area of ​​the reinforcing plate. The support base 10 is composed of multiple components, wherein the mounting wall 11 is a vertical structure, the reinforcing plate is distributed on one side of the mounting wall 11, and is combined with the mounting wall 11 to form a reinforcing frame. The mounting wall 11 is provided with an annular detection hole, and the rotating gear assembly 20 is installed on the mounting wall 11 and surrounds the detection hole.

[0042] The backlash eccentric drive assembly 30 is installed on the installation wall 11, and the drive motor 32 is located on one side of the reinforcement plate to provide a reinforced structure and installation space. The support frame 12 is distributed at the bottom of the support base 10, wherein the support frame 12 extends to both sides of the support base 10 to expand the support range.

[0043] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0044] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A tooth clearance eccentricity adjustment mechanism, characterized in that: It includes a support seat, a rotating gear assembly rotatably connected to the support seat, and a backlash eccentric drive assembly installed on the support seat, wherein the backlash eccentric drive assembly includes a drive motor, an eccentric flange detachably installed on the support seat, and a drive gear installed on the drive motor, wherein the drive motor is installed on the eccentric flange, and the drive gear is meshed and connected with the rotating gear assembly; The eccentric flange includes a plurality of mounting holes distributed on the same circumferential line, and the center of the circumferential line is eccentrically arranged with respect to the rotation axis of the driving gear.

2. The backlash eccentricity adjustment mechanism according to claim 1, characterized in that: The number of the mounting holes is 6 to 30.

3. The backlash eccentricity adjustment mechanism according to claim 1, characterized in that: The eccentric flange is plug-connected to the support seat.

4. The backlash eccentricity adjustment mechanism according to claim 3, characterized in that: The eccentric flange includes a mounting portion and a flange portion protruding from the mounting portion, the mounting portion is plugged into the support seat, the flange portion is locked to the support seat via a fastener, and the mounting holes are spaced around the center line of the mounting portion.

5. The backlash eccentricity adjustment mechanism according to claim 4, characterized in that: The surface of the mounting portion is flush with the surface of the support seat.

6. The backlash eccentricity adjustment mechanism according to claim 4, characterized in that: The output shaft of the driving motor is installed with a expansion sleeve, and the driving gear is installed on the expansion sleeve.

7. The backlash eccentricity adjustment mechanism according to claim 1, characterized in that: The eccentricity between the center of the circumference and the axis of rotation of the driving gear is set to 1mm-10mm.

8. The backlash eccentricity adjustment mechanism according to claim 1, characterized in that: The tooth gap eccentric drive assembly is located at the lower side of the support seat.

9. The backlash eccentricity adjustment mechanism according to claim 1, characterized in that: The support base includes a mounting wall, a reinforcing plate distributed on one side of the mounting wall, and a support bracket located at the bottom of the mounting wall. The rotating gear assembly and the driving gear are distributed on one side of the mounting wall, and the driving motor is located in the surrounding area of ​​the reinforcing plate.

10. The backlash eccentricity adjustment mechanism according to claim 1, characterized in that: A support bearing is arranged between the support seat and the rotating gear assembly, and the gear diameter of the rotating gear assembly is 10 times to 30 times the gear diameter of the driving gear.

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