Rotary eccentric torque compensation device for industrial CT and industrial CT equipment

Abstract

The utility model discloses a rotating eccentric torque compensation device for industrial CT (computed tomography) and industrial CT equipment, belongs to the technical field of industrial CT, and is used for solving the technical problem of dynamic unbalance of a rotating mechanism on CT equipment of large industrial CT equipment. The device comprises a gear assembly and a spring assembly, the gear assembly comprises an eccentric gear and a gear seat; the spring assembly comprises a compression spring; one end of the compression spring is mounted at the bottom of the gear seat; when the eccentric gear rotates, the gear seat can periodically compress the compression spring so as to adaptively apply a rotation resistance moment to the gear disc to compensate the eccentric moment of the gear disc, so that the industrial CT equipment disclosed by the utility model realizes adaptive rotation balance, and the scanning precision is improved.

Description

Technical Field

[0001] This utility model belongs to the field of industrial CT technology, and relates to a rotational eccentricity torque compensation device and an industrial CT device for industrial CT. Background Technology

[0002] In industrial CT imaging systems, the radiation generator and receiving unit are integrated into a rotating mechanism. Due to the general spatial offset between the center of gravity and the axis of rotation, dynamic imbalance occurs during operation, which significantly reduces the system's positioning accuracy and affects the detection quality.

[0003] In specialized industrial applications, where rotating mechanisms are large and heavy, the traditional leveling method of gradually adding counterweights severely restricts production and equipment debugging efficiency. This technical bottleneck is particularly prominent in the testing of large components in nuclear power, aerospace, and other fields, necessitating the development of novel balance compensation and correction technologies. Utility Model Content

[0004] Based on the above analysis, this utility model aims to provide a rotational eccentricity torque compensation device and industrial CT equipment for industrial CT, so as to solve the technical problem of dynamic imbalance of the rotation mechanism of large industrial CT equipment.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions.

[0006] In a first aspect, this utility model provides a rotational eccentricity torque compensation device for industrial CT, comprising a gear assembly and a spring assembly; the gear assembly includes an eccentric gear and a gear seat; the eccentric gear is rotatably mounted on the gear seat via a bearing; the spring assembly includes a compression spring; the compression spring is arranged radially along the eccentric gear and one end is mounted on the bottom of the gear seat; the eccentric gear is used to mesh with a gear disk of a rotating mechanism on an industrial CT device, and when the eccentric gear rotates, the gear seat can periodically compress the compression spring, thereby adaptively applying a rotational resistance torque to the gear disk to compensate for the eccentricity torque of the gear disk.

[0007] Furthermore, the ratio of the number of teeth between the gear disk and the eccentric gear is an integer.

[0008] Furthermore, the bottom of the gear seat is provided with a pressing element, which is used to press and compress one end of the spring.

[0009] Furthermore, it also includes a slide rail assembly, which includes a slide rail arranged in parallel with a compression spring.

[0010] Furthermore, the slide rail assembly also includes a slider; the slider is fixedly connected to the gear seat, so that the gear seat can reciprocate along the direction of the slide rail when the eccentric gear rotates.

[0011] Furthermore, the spring assembly also includes a spring seat and an adjusting screw, one end of which is located inside the other end of the compression spring and the other end is threadedly connected to the spring seat.

[0012] Furthermore, the adjusting screw also includes an adjusting baffle, which is located on the outer periphery of the adjusting screw and abuts against the other end of the compression spring.

[0013] Furthermore, it also includes a mounting bracket for fixed connection with the rotating mechanism on the CT equipment.

[0014] Furthermore, both the slide rail and the spring seat are fixedly connected to the mounting bracket.

[0015] In another aspect, this utility model provides an industrial CT device, including a rotational eccentricity torque compensation device for industrial CT according to any one of the first aspects, a gear disk, a drive gear, and a drive motor.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] 1. The present invention relates to a rotational eccentricity torque compensation device for industrial CT scanners. By setting up a gear assembly including an eccentric gear and a spring assembly, it can generate an adaptive compensation torque for the eccentricity torque of the rotating mechanism on the CT equipment. This enables the rotating mechanism on the CT equipment to achieve adaptive rotational balance, improving the performance stability and image quality of the industrial CT equipment, enhancing scanning accuracy, ensuring the quality and service life of key components, and significantly reducing the time and resources required for adjusting the balance of the rotating mechanism on the CT equipment, thereby significantly improving production efficiency.

[0018] 2. The rotary eccentric torque compensation device for industrial CT of this utility model, by setting a slide rail assembly, enables the eccentric gear to move stably and smoothly along the longitudinal edge of the connecting line, ensuring that the rotary eccentric torque compensation device for industrial CT generates an adaptive balance resistance torque for the rotating mechanism on the CT equipment.

[0019] 3. The rotary eccentric torque compensation device for industrial CT of this utility model, by setting the tooth ratio of the gear disk to the eccentric gear to an integer, can ensure that the balancing resistance torque of the eccentric gear on the rotary mechanism of the CT equipment is at its maximum every time the rotary mechanism rotates to the position with the maximum eccentric torque, thereby avoiding the rotational imbalance of the gear disk.

[0020] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the assembly state of the eccentric torque compensation device according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a cross-sectional structural schematic diagram of the eccentric torque compensation device according to Embodiment 1 of this utility model;

[0023] Figure 3 This is an exploded view of the gear assembly according to Embodiment 1 of this utility model;

[0024] Figure 4 This is a partial internal structure schematic diagram of the eccentric torque compensation device according to Embodiment 1 of this utility model;

[0025] Figure 5 This is a schematic diagram of the adjusting screw structure in Embodiment 1 of this utility model;

[0026] Figure 6 This is a schematic diagram illustrating the working principle of the eccentric torque compensation device in Embodiment 1 of this utility model;

[0027] Figure 7 This is a schematic diagram of the industrial CT equipment structure of Embodiment 2 of this utility model.

[0028] Figure label:

[0029] 100 - Rotational eccentricity torque compensation device;

[0030] 1-Gear assembly; 11-Eccentric gear; 111-Gear spindle; 12-Gear seat; 121-Extruded part; 1211-Limiting block; 13-Bearing; 14-Spacer sleeve; 15-Locking nut; 2-Spring assembly; 21-Compression spring; 22-Spring seat; 23-Adjusting screw; 231-Baffle; 3-Slide rail assembly; 31-Slide rail; 32-Sliding part; 4-Fixing frame;

[0031] 200 - Drive motor; 300 - Drive gear; 400 - Gear disk;

[0032] L1 - Connecting center along the long line; G - Center of mass of the rotating mechanism. Detailed Implementation

[0033] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0034] Example 1

[0035] This embodiment discloses a rotational eccentricity torque compensation device for industrial CT, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the assembly includes a gear assembly 1 and a spring assembly 2. The gear assembly 1 includes an eccentric gear 11 and a gear seat 12. The eccentric gear 11 is rotatably mounted on the gear seat 12 via a bearing. The spring assembly 2 includes a compression spring 21. The compression spring 21 is arranged radially along the eccentric gear 11 and one end is mounted on the bottom of the gear seat 12. The eccentric gear 11 is used to mesh with the gear disk 100 of the rotating mechanism on the industrial CT equipment. When the eccentric gear 11 rotates, the gear seat 12 can periodically compress the compression spring 21, thereby adaptively applying a rotational resistance torque to the gear disk to compensate for the eccentric torque of the gear disk.

[0036] The rotational eccentricity torque compensation device for industrial CT in this embodiment can generate an adaptive resistance torque for the eccentricity torque of the rotating mechanism on the CT equipment. This allows the eccentricity torque of the rotating mechanism on the CT equipment to achieve rotational balance by obtaining an adaptive compensation torque surface, thereby improving the performance stability and image quality of the industrial CT equipment, enhancing scanning accuracy, ensuring the quality and service life of key components, and significantly reducing the time and resources required for balancing the rotating mechanism on the industrial CT equipment, thus significantly improving production efficiency.

[0037] A preferred embodiment of this solution is as follows: Figure 1 and Figure 2 As shown, the rotational eccentricity torque compensation device for industrial CT also includes a slide rail assembly 3 and a fixed frame 4; the slide rail assembly 3 is mounted on the fixed frame 4 and is used to guide the movement of the eccentric gear 11 along the long line L1; the fixed frame 4 is used to be fixedly connected to the rotation mechanism on the CT equipment.

[0038] A preferred embodiment of this solution is as follows: Figure 3 As shown, gear assembly 1 includes an eccentric gear 11, a gear seat 12, and a bearing 13.

[0039] like Figure 3 As shown, the eccentric gear 11 meshes with the gear disk. The gear ratio between the gear disk and the eccentric gear 11 must be an integer; optionally, the gear ratio between the gear disk and the eccentric gear 11 is 90:10. Figure 3As shown, the eccentric gear 11 includes a gear spindle 111, which is rotatably connected to the gear seat 12 via the gear spindle 111. A bearing 13 is sleeved between the gear spindle 111 and the gear seat 12. Preferably, as shown... Figure 3 and Figure 4 As shown, there are two bearings 13 with a spacer sleeve 14 in between. The end of the gear spindle 111 is threadedly engaged with two locking nuts 15 to lock it in place.

[0040] like Figure 3 As shown, the bottom of the gear seat 12 is provided with a pressing member 121 for pressing one end of the compression spring 21. Preferably, the pressing member 121 is provided with a limiting block 1211, which is inserted into one end of the compression spring 21 to limit one end of the compression spring 21, thereby ensuring that the force between the pressing member 121 and the compression spring 21 is perpendicular to the surface of the pressing member 121.

[0041] In a preferred embodiment, the spring assembly 2 includes a compression spring 21, a spring seat 22, and an adjusting screw 23.

[0042] A preferred embodiment of this solution is as follows: Figure 2 and Figure 4 As shown, the compression spring 21 is arranged on the long line L1 connecting the eccentric gear 11 and the gear disk. The axis of the eccentric gear 11 can move along the long line L1, so that the compression spring 21 is compressed and thus exerts force on the eccentric gear 11. This enables the eccentric gear 11 to generate an adaptive resistance torque on the rotating mechanism of the CT equipment, so as to compensate for the eccentric torque on the rotating mechanism of the CT equipment and achieve the effect of balancing the rotation of the rotating mechanism on the CT equipment.

[0043] like Figure 2 and Figure 4 As shown, the spring seat 22 is fixedly connected to the fixing frame 4. The spring seat 22 has a screw hole, and the adjusting screw 23 passes through the screw hole and is threadedly connected to the spring seat 22. The adjusting screw 23 is arranged coaxially with the compression spring 21, with one end located inside the other end of the compression spring 21 to limit the other end of the compression spring 21.

[0044] In a preferred embodiment, the slide rail assembly 3 includes a slide rail 31 and a slider 32; as shown... Figure 4 As shown, the slide rail 31 is fixed on the mounting bracket 4, one side of the sliding member 32 is slidably connected to the slide rail 31, and the other side is fixedly connected to the gear seat 12. Preferably, the slide rail assembly 3 is configured as two sets, located on both sides of the spring assembly 2 respectively.

[0045] like Figure 1As shown, the fixing frame 4 is used to fix and connect with the rotating mechanism on the CT equipment. After connection, it is necessary to ensure that the eccentric gear 11 meshes with the gear disk and the compression spring 21 is arranged along the long line L1 connecting the center between the eccentric gear 11 and the gear disk. When the gear disk rotates and drives the eccentric gear 11 to rotate, the eccentric gear 11 moves periodically along the long line L1 connecting the center under the guidance of the slide rail assembly 3. This causes the pressure of the extruder 121 on one end of the compression spring 21 to change periodically. Correspondingly, the radial reaction force of the compression spring 21 on the eccentric gear 11 will also change periodically.

[0046] It should be noted that, as Figure 6 As shown, when the rotating mechanism on the CT equipment rotates to the position where the eccentric torque generated by the center of mass is the largest, it is necessary to ensure that the distal end of the eccentric gear 11 meshes with the gear disk, that is, the end of the eccentric gear 11 with the largest eccentricity meshes with the gear disk.

[0047] The working principle of the rotational eccentricity torque compensation device for industrial CT in this embodiment is as follows:

[0048] like Figure 6 As shown, due to the common deviation between the center of mass G of the rotating mechanism on actual CT equipment and the theoretical center of rotation, the rotating mechanism on the CT equipment will inevitably be eccentric during rotation. When the eccentric torque generated by the center of mass G of the rotating mechanism on the CT equipment is greater than the frictional torque generated between the components during the rotation of the rotating mechanism on the CT equipment, an imbalance will occur during the rotation of the rotating mechanism on the CT equipment. The rotational eccentric torque compensation device for industrial CT in this embodiment, after assembly, allows the eccentric gear 11 to mesh with the gear disk, which can decompose part of the radial force between the eccentric gear 11 and the gear disk into tangential force, thereby forming the rotational resistance of the gear disk. Since the eccentricity of the eccentric gear 11 is variable, the pressure of the compression spring 21 abutting below the pressing member 123 also changes accordingly; therefore, during the rotation of the rotating mechanism on the CT equipment, not only will the position of the center of mass G of the rotating mechanism on the CT equipment change periodically, but the rotational resistance of the eccentric gear 11 acting on the rotating mechanism on the CT equipment will also change periodically. Since the gear ratio between the gear disk and the eccentric gear 11 is an integer, and the assembly conditions of this device meet the requirement that the position of the maximum eccentric torque generated by the center of mass G of the rotating mechanism on the CT device is met, the end of the eccentric gear 11 with the largest eccentricity meshes with the gear disk. This ensures that when the rotating mechanism on the CT device rotates to the position of the maximum eccentric torque generated by the center of mass G of the rotating mechanism on the CT device, the rotational resistance acting on the gear disk by the eccentric gear 11 is always at its maximum value, so that the rotating mechanism on the CT device is subjected to a resistance torque that balances the eccentric torque.

[0049] For example, such as Figure 5As shown, assume the rotating mechanism on the CT equipment rotates clockwise. When the center of mass G of the rotating mechanism on the CT equipment is at... Figure 5 When the center of mass G of the rotating mechanism on the CT equipment is in the middle position, the eccentricity of the eccentric gear 11 is at its maximum, the compression of the compression spring 21 is at its maximum, and the balancing resistance torque generated on the rotating mechanism on the CT equipment is also at its maximum; therefore, when the center of mass G of the rotating mechanism on the CT equipment is in the middle position, the eccentricity of the eccentric gear 11 is at its maximum, the compression of the compression spring 21 Figure 5 When the eccentric torque is near the center position, it is most likely to be greater than the frictional torque in the rotating mechanism of the CT equipment. According to the arrangement of this device, the compression amount of the compression spring 21 is the largest at this time, and the eccentric gear 11 generates the largest balancing resistance torque on the rotating mechanism of the CT equipment. It also increases and decreases synchronously with the increase and decrease of the eccentric torque, thereby achieving the beneficial effect of adaptively adjusting the rotational balance of the rotating mechanism on the CT equipment, improving the scanning accuracy, and ensuring the quality and service life of key components of the product.

[0050] Because the magnitude of frictional resistance varies and changes during rotation of the rotating mechanism on different CT devices, in order to ensure that the balancing resistance torque of the eccentric gear 11 acting on the rotating mechanism of the CT device can be relatively balanced with the frictional resistance of the rotating mechanism on the CT device, such as... Figure 4 and Figure 5 As shown, the adjusting screw 23 also includes an adjusting baffle 231, which is an annular plate located on the outer periphery of the adjusting screw 23, between the compression spring 21 and the spring seat 22. The adjusting baffle 231 abuts against one end of the compression spring 21. When the adjusting screw 23 is rotated to move the adjusting baffle 231 on the spring seat 22, the adjusting baffle 231 will squeeze the compression spring 21, thereby increasing or decreasing the basic value of the radial reaction force of the compression spring 21 on the eccentric gear 11, so as to ensure that the balance compensation torque of the eccentric gear 11 acting on the rotating mechanism of the CT equipment is relatively balanced with the eccentric torque of the rotating mechanism on the CT equipment.

[0051] Example 2

[0052] This embodiment discloses an industrial CT device, including the rotational eccentricity torque compensation device 100 for industrial CT as described in Embodiment 1.

[0053] like Figure 7 As shown, the industrial CT equipment of this embodiment also includes a drive motor 200, a drive gear 300, and a gear disk 400; the drive motor 200 is mounted on the equipment frame and is used to control the rotation of the drive gear 300. The rotating mechanism on the CT equipment includes the gear disk 400, a counterweight, and a detection system. The gear disk 400 meshes with the drive gear 300 so that the drive motor 200 can drive the rotating mechanism on the CT equipment to rotate. The counterweight is mounted on the outer periphery of the gear disk 400 to reduce the deviation between the center of mass and the center of rotation of the rotating mechanism on the CT equipment.

[0054] like Figure 7As shown, the rotational eccentricity torque compensation device 100 for industrial CT is mounted on the lower part of the equipment frame. In this embodiment, the rotational eccentricity torque compensation device 100 for industrial CT can generate an adaptive resistance torque for the eccentricity torque of the rotating mechanism on the CT equipment, thereby enabling the rotating mechanism on the CT equipment to achieve adaptive rotational balance, improving the performance stability and image quality of the industrial CT equipment, enhancing the scanning accuracy, ensuring the quality and service life of key components, and also significantly reducing the time and resources occupied by the rotating mechanism on the CT equipment when adjusting the balance, thus significantly improving production efficiency.

[0055] It should be noted that the industrial CT equipment in this embodiment also includes a modulator, a cooler, and other components. These components and the detection system are all existing technologies and are not within the scope of the technical improvements of this utility model.

[0056] 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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotational eccentricity torque compensation device for industrial CT, characterized in that, It includes a gear assembly (1) and a spring assembly (2); The gear assembly (1) includes an eccentric gear (11) and a gear seat (12); the eccentric gear (11) is rotatably mounted on the gear seat (12) via a bearing; The spring assembly (2) includes a compression spring (21); the compression spring (21) is arranged radially along the eccentric gear (11) and one end is mounted on the bottom of the gear seat (12); The eccentric gear (11) is used to mesh with the gear disk of the rotating mechanism on the industrial CT equipment. When the eccentric gear (11) rotates, the gear seat (12) can periodically compress the compression spring (21), thereby adaptively applying rotational resistance torque to the gear disk to compensate for the eccentric torque of the gear disk.

2. The rotational eccentricity torque compensation device for industrial CT according to claim 1, characterized in that, The ratio of the number of teeth of the gear disk to that of the eccentric gear (11) is an integer.

3. The rotational eccentricity torque compensation device for industrial CT according to claim 2, characterized in that, The bottom of the gear seat (12) is provided with a pressing member (121), which is used to press one end of the compression spring (21).

4. The rotational eccentricity torque compensation device for industrial CT according to claim 3, characterized in that, It also includes a slide rail assembly (3), which includes a slide rail (31) arranged in parallel with the compression spring (21).

5. The rotational eccentricity torque compensation device for industrial CT according to claim 4, characterized in that, The slide rail assembly (3) also includes a slider (32); the slider (32) is fixedly connected to the gear seat (12) so that the gear seat (12) can reciprocate along the direction of the slide rail (31) when the eccentric gear (11) rotates.

6. The rotational eccentricity torque compensation device for industrial CT according to claim 5, characterized in that, The spring assembly (2) further includes a spring seat (22) and an adjusting screw (23), one end of which is located inside the other end of the compression spring (21) and the other end is threadedly connected to the spring seat (22).

7. The rotational eccentricity torque compensation device for industrial CT according to claim 6, characterized in that, The adjusting screw (23) also includes an adjusting baffle (231), which is located on the outer periphery of the adjusting screw (23) and abuts against the other end of the compression spring (21).

8. The rotational eccentricity torque compensation device for industrial CT according to any one of claims 6 to 7, characterized in that, It also includes a mounting bracket (4) for fixed connection with the rotating mechanism on the CT equipment.

9. The rotational eccentricity torque compensation device for industrial CT according to claim 8, characterized in that, Both the slide rail (31) and the spring seat (22) are fixedly connected to the fixing frame (4).

10. An industrial CT device, characterized in that, Includes the rotary eccentricity torque compensation device for industrial CT, gear disk, drive gear, and drive motor as described in any one of claims 1 to 9.

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