Movable workpiece defect scanning device

Abstract

The utility model discloses a movable workpiece defect scanning device, belongs to the technical field of industrial CT (Computed Tomography), and is used for solving the technical problem that industrial vertical scanning equipment is inconvenient to carry out outdoor detection on workpieces. The moving device comprises a moving carrier, a scanning device and a moving channel, the moving channel comprises a first channel and a second channel, the first channel and the second channel are detachably connected with the two ends of the scanning device respectively, each of the first channel and the second channel comprises a universal wheel and a workpiece conveying belt, and the scanning device comprises a rotating body and a rotating balance assembly. The workpiece defect scanning device disclosed by the utility model can be quickly moved and arranged indoors and outdoors, so that self-adaptive rotating balance is realized, 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 movable workpiece defect scanning device. Background Technology

[0002] In the field of industrial CT technology, vertical workpiece scanning equipment, because its X-ray source and detector are integrated into a rotatable vertical structure, can realize omnidirectional tomographic scanning of workpieces and is widely used for non-destructive defect detection of workpieces.

[0003] Because certain special workpieces can only be inspected in outdoor environments, vertical scanning equipment is required to be easily movable, quickly deployed, and have better rotational balance performance. However, most existing vertical scanning equipment is fixed, heavy, and bulky, making it inconvenient to move. In particular, existing vertical scanning equipment usually uses counterweights for leveling, which is not conducive to the easy movement and rapid leveling of the scanning equipment, thus affecting the efficiency and scanning accuracy of the workpiece inspection process. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide a mobile workpiece defect scanning device to solve the technical problem that industrial vertical scanning equipment is inconvenient for outdoor workpiece inspection.

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

[0006] This utility model provides a movable workpiece defect scanning device, including a mobile carrier, a scanning device, and a moving channel; the scanning device is mounted on the mobile carrier; the moving channel includes a first channel and a second channel, which are detachably connected to both ends of the scanning device, and both the first channel and the second channel include casters and a workpiece conveyor belt; the scanning device includes a rotating body and a rotation balancing assembly; the rotating body includes a rotating gear; the rotation balancing assembly includes an eccentric gear; the eccentric gear is mounted below the rotating gear and meshes with the rotating gear; when the eccentric gear rotates, it can apply a rotational resistance torque to the rotating body when the rotating body generates an eccentric torque.

[0007] Furthermore, the ratio of the number of teeth of the rotary gear to that of the eccentric gear is an integer.

[0008] Furthermore, the rotary balancing assembly also includes a slide and a spring assembly; the eccentric gear is rotatably mounted on the slide via a bearing; the spring assembly includes a compression spring, the bottom end of which is fixed and the upper end of which is mounted on the bottom of the slide.

[0009] Furthermore, the spring assembly also includes an adjusting member located at the bottom end of the compression spring, which is used to adjust the initial length of the compression spring.

[0010] Furthermore, the adjusting component includes a first limiting block and a retaining ring; the retaining ring is located at one end of the first limiting block, the bottom end of the compression spring surrounds the first limiting block and abuts against the retaining ring, and the retaining ring can move towards the upper end of the compression spring to adjust the initial length of the compression spring.

[0011] Furthermore, the scanning device also includes a fixed frame, which is fixedly connected to the mobile carrier; the rotary balancing assembly also includes a mounting bracket, which is fixedly connected to the fixed frame.

[0012] Furthermore, the mounting bracket includes a first spring seat, and the adjusting component also includes a screw, which is threadedly connected to the first spring seat.

[0013] Furthermore, one end of the screw is fixedly connected to the retaining ring, and the screw can move the retaining ring up and down relative to the first spring seat to adjust the initial length of the compression spring.

[0014] Furthermore, the rotary balancing assembly also includes a linear guide rail, which is arranged vertically.

[0015] Furthermore, the slider and guide rail of the linear slide rail are fixed on the slide block and the mounting bracket respectively, so that the slide block can move up and down periodically when the eccentric gear rotates.

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

[0017] 1. The movable workpiece defect scanning device of this utility model, by setting a movable channel that is detachable from the scanning equipment and setting universal wheels on the movable channel, realizes rapid movement and deployment indoors and outdoors, and improves the applicability of the scanning device to the inspection site.

[0018] 2. The movable workpiece defect scanning device of this utility model, by setting a rotational balancing component, can apply a rotational resistance torque to the rotating body when the rotating body generates an eccentric torque, thereby enabling the rotating body to achieve adaptive rotational balance, improving the performance stability and image quality of the scanning equipment, enhancing the scanning accuracy of the scanning equipment in different locations, and also significantly reducing the time and resources occupied by adjusting the balance of the rotating body when frequently moving the scanning equipment.

[0019] 3. The rotary balancing assembly of this utility model, by setting a linear slide rail, enables the first spring seat to move more stably and smoothly in a periodic manner, making the operation of the rotary balancing assembly more stable and reliable.

[0020] 4. The movable workpiece defect scanning device of this utility model, by setting the tooth ratio of the rotary gear and the eccentric gear to an integer, ensures that the balancing resistance torque exerted by the eccentric gear on the rotary body is at its maximum each time the rotary body rotates to the position of maximum eccentric torque, thereby avoiding rotational imbalance of the rotary gear. In this utility model, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combinations. Other features and advantages of this utility model will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this utility model. The objectives and other advantages of this utility model can be realized and obtained through the embodiments described and the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the movable workpiece defect scanning device according to an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional view of the movable workpiece defect scanning device according to an embodiment of the present invention.

[0023] Figure 3 This is a partial structural schematic diagram of the scanning device according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the overall structure of the rotational balancing assembly of Embodiment 1 of this utility model;

[0025] Figure 5 This is an exploded structural diagram of the rotating balancing assembly of Embodiment 1 of this utility model;

[0026] Figure 6 This is a schematic diagram illustrating the working principle of the rotating balancing assembly according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the adjusting member in Embodiment 2 of this utility model;

[0028] Figure 8 This is a partial structural schematic diagram of the rotational balancing component of Embodiment 2 of this utility model.

[0029] Figure label:

[0030] 1-Mobile vehicle;

[0031] 2-Scanning device; 21-Rotating body; 211-Rotating gear; 212-Scanning component; 22-Rotating balance assembly; 221-Eccentric gear; 2211-Gear spindle; 222-Slide block; 2221-Bearing; 2222-Busset; 2223-Spacer sleeve; 2224-Seat body; 22241-Second spring seat; 223-Spring assembly; 224-Mounting bracket; 2241-First spring seat; 225-Linear slide rail; 23-Motor assembly; 24-Fixed frame;

[0032] 3-Moving channel; 301-Universal wheels; 302-Workpiece conveyor belt; 31-First channel; 311-Channel cover plate; 32-Second channel;

[0033] 4- Inspect the workpiece;

[0034] G - Center of mass of the body of revolution; C - Center of rotation. Detailed Implementation

[0035] 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.

[0036] Example 1

[0037] This embodiment discloses a movable workpiece defect scanning device, such as... Figure 1 and Figure 2 As shown, the device includes a mobile carrier 1, a scanning device 2, and a moving channel 3. The scanning device 2 is mounted on the mobile carrier 1. The moving channel 3 is detachably connected to the scanning device 2 and includes casters 301, allowing the moving channel 3 to move independently. This embodiment of the workpiece defect scanning device allows for the separate assembly, disassembly, and movement of the scanning device 2 and the moving channel 3, meeting the needs of both indoor and outdoor use.

[0038] Preferred, such as Figure 2 As shown, the moving channel 3 includes a first channel 31 and a second channel 32. The first channel 31 and the second channel 32 are detachably connected to both ends of the scanning device 2. Both the first channel 31 and the second channel 32 are equipped with workpiece conveyor belts 302. For example, the end of the first channel 31 is provided with a channel cover plate 311 for detecting the feeding and discharging of the workpiece 4; the end of the second channel 32 is closed.

[0039] When inspection is required, the scanning device 2 is first moved to the designated outdoor location using the mobile carrier 1. Then, the first channel 31 and the second channel 32 are moved to the sides of the scanning device 2 via casters 301 and connected and fixed to it. The channel cover 311 is opened, and the workpiece 4 is placed onto the workpiece conveyor belt 302 of the first channel 31. The channel cover 311 is then closed. The scanning device 2 can then be started normally, and the workpiece conveyor belt 302 transports the workpiece 4 through the scanning device 2 for inspection. The scanning device 2 is a vertical spiral scanning device, which can clearly inspect the workpiece 4 and generate a three-dimensional image of it. After the workpiece 4 has completely left the scanning area of ​​the scanning device 2, it remains on the workpiece conveyor belt 302 of the second channel 32. At this point, the movement direction of the workpiece conveyor belt 302 is reversed, and the workpiece 4 is transported back to the workpiece conveyor belt 302 of the first channel 31. The channel cover 311 is then opened, and the workpiece 4 is removed, completing the scanning task.

[0040] The workpiece defect scanning device of this embodiment, by setting a movable channel 3 that is detachable from the scanning device 2 and setting universal wheels 301 on the movable channel 3, facilitates the rapid movement of the scanning device outdoors and indoors, and improves the applicability of the scanning device to the inspection site.

[0041] Considering that scanning device 2 will experience rotational imbalance due to eccentricity, and especially since scanning device 2 is fixed to the moving carrier 1 and requires higher balancing capabilities, such as... Figure 3 As shown, the scanning device 2 in this embodiment includes a rotating body 21, a rotational balancing assembly 22, a motor assembly 23, and a fixed frame 24. The rotating body 21 is rotatably connected to the fixed frame 24, and the rotational balancing assembly 22 and the motor assembly 23 are mounted on the fixed frame 24. The motor assembly 23 controls the rotation of the rotating body 21, and the rotational balancing assembly 22 applies a rotational resistance torque to the rotating body 21 when it generates an eccentric torque, thereby enabling the rotating body 21 to achieve adaptive rotational balance. This improves the performance stability and image quality of the scanning device 2, enhances scanning accuracy, ensures the quality and service life of key product components, and significantly reduces the time and resources required for the rotating body 21 to adjust its balance, thus significantly improving production efficiency.

[0042] like Figure 3 As shown, the rotating body 21 is a vertical rotating structure, including a rotating gear 211 and a scanning component 212. The scanning component 212 is fixedly connected to the rotating gear 211. The rotation axis of the rotating gear 211 is arranged horizontally and meshes with the output gear of the motor assembly 23, so that the motor assembly 23 can control the scanning component 212 to rotate 360° around the workpiece 4 being detected.

[0043] like Figure 4As shown, the rotary balancing assembly 22 includes an eccentric gear 221, a slide block 222, a spring assembly 223, a mounting bracket 224, and a linear slide rail 225.

[0044] The eccentric gear 221 meshes with the rotary gear 211. The tooth ratio of the rotary gear 211 to the eccentric gear 221 must be an integer. For example, the tooth ratio of the rotary gear 211 to the eccentric gear 221 is 90:10.

[0045] like Figure 5 As shown, the eccentric gear 221 includes a gear spindle 2211, and the eccentric gear 221 is rotatably connected to the slide block 222 through the gear spindle 2211.

[0046] like Figure 5 As shown, the slide 222 includes a bearing 2221, a bushing 2222, a spacer 2223, and a seat 2224. The bearing 2221 is sleeved between the gear spindle 2211 and the slide 222; preferably, there are two bearings 2221 with a spacer 2223 in between, and the end of the gear spindle 2211 is locked with two locking nuts through thread engagement.

[0047] like Figure 4 and Figure 5 As shown, the mounting bracket 224 is fixedly connected to the fixed frame 24, and the linear slide rail 225 is arranged vertically. The slider and guide rail of the linear slide rail 225 are fixed on the base 2224 and the mounting bracket 224 respectively, so that when the eccentric gear 221 rotates, the slide block 222 can move up and down periodically on the linear slide rail 225. Preferably, the linear slide rail 225 is configured as two sets, located on both sides of the gear spindle 2211 respectively.

[0048] like Figure 4 and Figure 5 As shown, the mounting bracket 224 is provided with a first spring seat 2241, and the bottom of the seat body 2224 is provided with a second spring seat 22241, which is located above the first spring seat 2241.

[0049] like Figure 5 As shown, the spring assembly 223 includes a compression spring 2231, which is arranged vertically with its two ends arranged on the first spring seat 2241 and the second spring seat 22241, respectively.

[0050] When the motor assembly 23 drives the rotating body 21 to rotate, the eccentric gear 221 drives the slide 222 to move up and down periodically as the rotating gear 211 rotates. This causes the distance between the second spring seat 22241 and the first spring seat 2241 on the slide 222 to change periodically. As a result, the compression spring 2231 is periodically compressed, which generates a periodic upward reaction force on the eccentric gear 221. The eccentric gear 221 transmits this reaction force to the rotating gear 211, and generates an adaptive rotational resistance torque on the rotating gear 211 to compensate for the eccentric torque on the rotating body 21, thereby achieving the effect of rotational balance of the rotating body 21.

[0051] It should be noted that, as Figure 6 As shown, when installing the rotary balancing assembly 22, it is necessary to ensure that when the rotating body rotates to the position where the eccentric torque generated by the center of mass is the largest, the distal end of the eccentric gear 221 meshes with the rotary gear 211, that is, the end of the eccentric gear 221 with the largest eccentricity meshes with the rotary gear 211.

[0052] The working process of the movable workpiece defect scanning device in this embodiment is as follows:

[0053] like Figure 6 As shown, since there is a general deviation between the actual center of mass G of the rotating body and the theoretical center of rotation C, the rotating body 21 will inevitably be eccentric during rotation. When the eccentric torque generated by the center of mass G of the rotating body is greater than the frictional torque generated between the components when the rotating body 21 rotates, an imbalance will occur during the rotation of the rotating body 21. The movable workpiece defect scanning device of this embodiment, after assembly, allows the eccentric gear 221 to mesh with the rotary gear 211, which can decompose part of the radial force between the eccentric gear 221 and the rotary gear 211 into tangential force, thereby forming the rotational resistance of the rotary gear 211. Since the eccentricity of the eccentric gear 221 is variable, the pressure of the compression spring 2231 abutting below the second spring seat 22241 also changes accordingly; therefore, during the rotation of the rotating body 21, not only will the position of the center of mass G of the rotating body change periodically, but the rotational resistance of the eccentric gear 221 acting on the rotating body 21 will also change periodically. Since the gear ratio of rotary gear 211 to eccentric gear 221 is an integer, and the assembly conditions of this device satisfy the position where the eccentric torque generated by the center of mass G of the rotating body is the largest, the end of eccentric gear 221 with the largest eccentricity meshes with rotary gear 211. This ensures that when the rotating body 21 rotates to the position where the eccentric torque generated by the center of mass G of the rotating body is the largest, the rotational resistance acting on rotary gear 211 by eccentric gear 221 is always at its maximum value, so that the rotating body 21 is subjected to a resistance torque that balances the eccentric torque.

[0054] For example, such as Figure 6As shown, assume that the rotating body 21 rotates clockwise. When the center of mass G of the rotating body is at... Figure 6 When the center of mass G of the rotating body is in the middle position, the eccentricity of the eccentric gear 221 is at its maximum, the compression of the compression spring 2231 is at its maximum, and the balance resistance torque generated on the rotating body 21 is also at its maximum; therefore, when the center of mass G of the rotating body is in the middle position, the eccentricity of the eccentric gear 221 is at its maximum, the compression of the compression spring 2231 is at its maximum, and the Figure 6 When the eccentric torque is near the center position, it is most likely to be greater than the frictional torque inside the rotating body 21. According to the arrangement of this device, the compression amount of the compression spring 2231 is the largest at this time, and the eccentric gear 221 generates the largest balancing resistance torque on the rotating body 21. It also increases or decreases synchronously with the increase or decrease of the eccentric torque, thereby achieving the beneficial effect of adaptively adjusting the rotational balance of the rotating body 21, improving the scanning accuracy, and ensuring the quality and service life of key components of the product.

[0055] It should be noted that the scanning device 2 in this embodiment also includes a modulator, a cooler, and other components. These components and the detection system are all prior art and are not within the scope of the technical improvements of this utility model.

[0056] Example 2

[0057] The movable workpiece defect scanning device of this embodiment differs from that of Embodiment 1 in that the spring assembly 223 further includes an adjusting member 2232.

[0058] When the rotating body 21 rotates, the magnitude of the eccentric torque changes due to the change in internal frictional resistance. In this embodiment, by setting the adjustment component 2232, the base value of the balance resistance torque acting on the rotating body 21 by the eccentric gear 221 can be adjusted, so that the balance resistance torque generated by the rotating balance component 22 is relatively balanced with the frictional resistance of the rotating body 21, thereby improving the scanning accuracy.

[0059] like Figure 7 As shown, in a preferred embodiment, the adjusting member 2232 includes a first limiting block 22321, a retaining ring 22322, and a screw 22323;

[0060] For example, such as Figure 7 and Figure 8 As shown, the first limiting block 22321 includes a cylindrical block, and the bottom end of the compression spring 2231 surrounds the outer periphery of the first limiting block 22321. The retaining ring 22322 is a plate fixed between the first limiting block 22321 and the screw 22323. The outer periphery of the retaining ring 22322 protrudes from the outer periphery of the first limiting block 22321, so that the end of the compression spring 2231 can abut against the surface of the retaining ring 22322.

[0061] A preferred embodiment of this solution is as follows: Figure 8As shown, the first spring seat 2241 has a screw hole that matches the screw 22323, and the screw 22323 is threadedly connected to the first spring seat 2241 through the screw hole.

[0062] When it is necessary to adjust the base value of the balancing resistance torque of the rotary balancing assembly 22, the screw 22323 is rotated to move the retaining ring 22322 up and down relative to the first spring seat 2241, changing the distance between the retaining ring 22322 and the second compression spring 2231, thereby adjusting the initial length of the compression spring 2231, increasing or decreasing the basic value of the radial reaction force of the compression spring 2231 on the eccentric gear 221, so as to ensure the magnitude of the balancing compensation torque of the eccentric gear 221 acting on the rotating body 21, thereby achieving relative balance with the eccentric torque of the rotating body 21.

[0063] 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 movable workpiece defect scanning device, characterized in that, It includes a mobile vehicle (1), a scanning device (2), and a mobile channel (3); The scanning device (2) is mounted on the mobile vehicle (1); The moving channel (3) includes a first channel (31) and a second channel (32). The first channel (31) and the second channel (32) are detachably connected to both ends of the scanning device (2). Both the first channel (31) and the second channel (32) include casters (301) and workpiece conveyor belts (302). The scanning device (2) includes a rotating body (21) and a rotating balancing assembly (22); The rotating body (21) includes a rotary gear (211); The rotary balancing assembly (22) includes an eccentric gear (221); The eccentric gear (221) is mounted below the rotary gear (211) and meshes with the rotary gear (211); When the eccentric gear (221) rotates, it can apply a rotational resistance torque to the rotating body (21) when the eccentric torque is generated in the rotating body (21).

2. The movable workpiece defect scanning device according to claim 1, characterized in that, The ratio of the number of teeth of the rotary gear (211) to the number of teeth of the eccentric gear (221) is an integer.

3. The movable workpiece defect scanning device according to claim 2, characterized in that, The rotary balancing assembly (22) also includes a slide (222) and a spring assembly (223); the eccentric gear (221) is rotatably mounted on the slide (222) via a bearing (2221); The spring assembly (223) includes a compression spring (2231), the bottom end of which is fixed and the upper end is mounted on the bottom of the slide (222).

4. The movable workpiece defect scanning device according to claim 3, characterized in that, The spring assembly (223) further includes an adjusting member (2232) located at the bottom end of the compression spring (2231) and used to adjust the initial length of the compression spring (2231).

5. The movable workpiece defect scanning device according to claim 4, characterized in that, The adjusting member (2232) includes a first limiting block (22321) and a retaining ring (22322); the retaining ring (22322) is located at one end of the first limiting block (22321), and the bottom end of the compression spring (2231) surrounds the first limiting block (22321) and abuts against the retaining ring (22322). The retaining ring (22322) can move towards the upper end of the compression spring (2231) to adjust the initial length of the compression spring (2231).

6. The movable workpiece defect scanning device according to claim 5, characterized in that, The scanning device (2) further includes a fixed frame (24), which is fixedly connected to the mobile carrier (1); the rotary balancing assembly (22) further includes a mounting bracket (224), which is fixedly connected to the fixed frame (24).

7. The movable workpiece defect scanning device according to claim 6, characterized in that, The mounting bracket (224) includes a first spring seat (2241), and the adjusting member (2232) further includes a screw (22323), which is threadedly connected to the first spring seat (2241).

8. The movable workpiece defect scanning device according to claim 7, characterized in that, One end of the screw (22323) is fixedly connected to the retaining ring (22322), and the screw (22323) can move the retaining ring (22322) up and down relative to the first spring seat (2241) to adjust the initial length of the compression spring (2231).

9. The movable workpiece defect scanning device according to claim 7 or 8, characterized in that, The rotary balancing assembly (22) also includes a linear slide rail (225) which is arranged vertically.

10. The movable workpiece defect scanning device according to claim 9, characterized in that, The slider and guide rail of the linear slide rail (225) are fixed on the slide block (222) and the mounting bracket (224) respectively, so that the slide block (222) can move up and down periodically when the eccentric gear (221) rotates.

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