Linear self-driven sleeve structure
By introducing a linear self-driven sleeve structure into the CT equipment, and using the guide rail groove and ball cooperation, the linear displacement and spiral movement of the rotating sleeve are achieved, the problem that existing CT equipment can only rotate and move is solved, and is suitable for scenes where spiral scanning is required.
Patent Information
- Application Number
- CN202422344955.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-25
AI Technical Summary
Existing CT scanning equipment can only achieve rotational motion and cannot achieve linear displacement, resulting in large area of equipment and limited application.
A linear self-driven sleeve structure is designed, including a central guide tube, a rotary sleeve and a guide bracket. By setting a guide rail groove on the outer surface of the central guide tube and the ball cooperation on the inner side of the guide bracket, the linear displacement of the rotary sleeve is realized, and spiral movement is achieved in combination with rotational movement.
It realizes that the CT scanning device can perform spiral motion without increasing the footprint, simplifying the driving method, and is suitable for scanning the measured object that needs to remain motionless.
Smart Images
Figure CN223137435U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of spiral scanning, in particular to a linear self-driven sleeve structure. Background Art
[0002] The existing CT scanning systems have a large floor area and are inconvenient to use; moreover, most of the existing CT scanning systems are fixed structures and do not move as a whole. When scanning, the object to be measured needs to move linearly; CT scanning cannot be performed on fixed structures / objects, and their practical applications are limited.
[0003] Considering that for the scanning of specific products / device components, it is necessary to keep the products / components stationary and perform scanning without the measured part detaching from the original device; therefore, the device needs to achieve spiral motion.
[0004] Based on this, the utility model provides a linear self-driven sleeve structure. Summary of the Utility Model
[0005] In view of the above analysis, the utility model aims to provide a linear self-driven sleeve structure to solve the problem that the existing CT equipment can only achieve rotational motion and cannot achieve linear displacement.
[0006] The purpose of the utility model is mainly achieved through the following technical solutions:
[0007] A linear self-driven sleeve structure includes: a central guide tube, a flange, a rotating sleeve, and a guide bracket. The central guide tube is a hollow circular tube, and its interior is used to place the workpiece to be detected; the rotating sleeve is sleeved outside the central guide tube; one end of the rotating sleeve is fixedly installed with a flange, and the other end is connected with a guide bracket; the flange is used to connect a driving device and can rotate under the drive of the driving device; a guide track groove is arranged on the outer surface of the central guide tube, and the guide track groove is spiral; a ball is arranged on the inner side of the guide bracket, and the ball is in rolling cooperation with the guide track groove; when the rotating sleeve rotates, the ball moves along the guide track groove to realize the displacement of the rotating sleeve in the axial direction relative to the central guide tube.
[0008] Further, the guide bracket further includes: a guide ring and an arc-shaped guide piece; one end of the guide ring is fixedly connected with the rotating sleeve, and a plurality of arc-shaped guide pieces are circumferentially arranged at the other end, and balls are nested and installed on the inner side of the arc-shaped guide pieces.
[0009] Further, two rotating sleeves are symmetrically arranged; flange plates are fixedly installed at the opposite ends of the two rotating sleeves.
[0010] Furthermore, limit rings are fixedly installed at the outer ends of the rotating sleeves; the limit rings are slidably sleeved outside the central guide tube, and guide brackets are fixedly installed on the outer sides of the limit rings.
[0011] Furthermore, the inner arc surface of the limit ring fits the outer surface of the central guide tube.
[0012] Furthermore, the cross-section of the guide track groove is an arc surface.
[0013] Furthermore, the installation positions of the balls on the multiple arc-shaped guide pieces are different.
[0014] Furthermore, the multiple arc-shaped guide pieces are evenly distributed along the circumferential direction of the guide ring;
[0015] Furthermore, the multiple balls are arranged in a staggered manner along the axial direction of the guide ring and have equal spacing.
[0016] Furthermore, four arc-shaped guide pieces and balls are provided, and the axial spacing between adjacent balls is 1 / 4 of the pitch of the guide track groove.
[0017] The technical solution of the present utility model can at least achieve one of the following effects:
[0018] 1. In the linear self-driving sleeve structure of the present utility model, when the rotating sleeve rotates under the drive of the driving device, the balls move along the extending direction of the guide track groove, which can realize the axial displacement of the guide bracket, and drive the rotating sleeve to rotate and displace simultaneously through the guide bracket, and finally realize the spiral movement of the scanning component of the CT scanning device relative to the device main body.
[0019] 2. In the linear self-driving sleeve structure of the present utility model, by arranging multiple balls at intervals along the axial direction of the guide ring, multiple balls can be engaged in the guide track groove, and when the guide bracket rotates synchronously with the rotating sleeve, the multiple balls roll synchronously along the guide track groove to realize the axial displacement. Moreover, the present utility model improves the overall operation stability of the device by arranging multiple arc-shaped guide pieces and multiple balls in redundant cooperation with the guide track groove.
[0020] In the present utility model, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present utility model will be described in the subsequent description, and some advantages can be made obvious from the description or understood by implementing the present utility model. The purpose and other advantages of the present utility model can be achieved and obtained through the content specifically pointed out in the description and the drawings. Description of the Drawings
[0021] The accompanying drawings are only for the purpose of showing specific embodiments and are not considered to be a limitation of the present utility model. Throughout the drawings, the same reference signs denote the same components.
[0022] Figure 1 It is a schematic structural diagram of the linear self - driving sleeve structure of the present utility model;
[0023] Figure 2 It is a schematic structural diagram of the rotating sleeve of the linear self - driving sleeve structure of the present utility model;
[0024] Figure 3 It is a schematic diagram of the mating state of the guiding bracket and the central guiding tube of the linear self - driving sleeve structure of the present utility model;
[0025] Figure 4 It is a sectional view effect diagram of the guiding bracket of the linear self - driving sleeve structure of the present utility model.
[0026] Reference signs:
[0027] 1 - central guiding tube; 2 - rotating sleeve; 3 - flange; 4 - limiting ring; 5 - guiding bracket; 6 - guiding track groove; 51 - guiding ring; 52 - arc - shaped guiding piece; 53 - ball. Specific embodiments
[0028] The following will specifically describe the preferred embodiments of the present utility model with reference to the accompanying drawings. Among them, the accompanying drawings form a part of the present utility model and are used together with the embodiments of the present utility model to explain the principle of the present utility model, rather than to limit the scope of the present utility model.
[0029] Embodiment 1
[0030] A specific embodiment of the present utility model discloses a linear self - driving sleeve structure, including: a central guiding tube 1, a rotating sleeve 2 and a guiding bracket 5, as Figure 1 shown.
[0031] Specifically, the central guiding tube 1 is a hollow circular tube, and its interior is used for placing the workpiece to be detected.
[0032] Specifically, the rotating sleeve 2 is sleeved outside the central guiding tube 1 and can rotate and displace relative to the central guiding tube 1.
[0033] Specifically, a flange 3 is fixedly installed at one end of the rotating sleeve 2. The rotating sleeve 2 is connected to the driving device through the flange 3 and can rotate under the drive of the driving device.
[0034] Further, as Figure 3As shown, a guiding track groove 6 is provided on the outer surface of the central guiding tube 1, and balls 53 are provided on the inner side of the guiding bracket 5. The balls 53 are in rolling fit with the guiding track groove 6. When the rotating sleeve 2 rotates, the balls 53 move along the guiding track groove 6, realizing the displacement of the rotating sleeve 2 in the axial direction relative to the central guiding tube 1.
[0035] In this embodiment, as Figure 1 shown, two rotating sleeves 2 are symmetrically arranged. Flange plates 3 are fixedly installed at the opposite ends of the two rotating sleeves 2. Specifically, a scanning assembly of a spiral CT is fixedly installed between the two flange plates 3, and thus the scanning assembly can be driven to move by the rotating sleeves 2.
[0036] Specifically, as Figure 2 shown, limiting rings 4 are fixedly installed at the outer ends of the rotating sleeves 2. The limiting rings 4 are slidably sleeved outside the central guiding tube 1, and guiding brackets 5 are fixedly installed on the outer sides of the limiting rings 4. The inner arc surfaces of the limiting rings 4 are attached to the outer surface of the central guiding tube 1, preventing the shaking caused by the gap between the rotating sleeve 2 and the central guiding tube 1, which is beneficial to maintaining the movement stability of the structural components.
[0037] In a specific embodiment of the present utility model, as Figure 4 shown, the guiding bracket 5 includes: a guiding ring 51, an arc-shaped guiding piece 52, and balls 53.
[0038] Specifically, one end of the guiding ring 51 is fixedly connected to the limiting ring 4, and a plurality of arc-shaped guiding pieces 52 are circumferentially arranged on the other side. Balls 53 are nested and installed inside the arc-shaped guiding pieces 52.
[0039] Correspondingly, a guiding track groove 6 is provided on the outer side of the central guiding tube 1. The balls 53 can be caught in the guiding track groove 6, and the balls 53 can slide or roll along the guiding track groove 6.
[0040] Preferably, the guiding track groove 6 is spiral.
[0041] Specifically, the cross-section of the guiding track groove 6 is an arc surface, and it is spirally arranged along the outer circumferential surface of the central guiding tube 1.
[0042] Preferably, the radius of the cross-section arc of the guiding track groove 6 is equal to the radius of the balls 53.
[0043] When the ball 53 slides or rolls along the guiding track groove 6, the guiding ring 51 can rotate circumferentially and displace in the axial direction relative to the central guiding tube 1, and thus can drive the rotating sleeve 2 to rotate and displace. That is to say, when the rotating sleeve 2 rotates, the ball 53 drives the guiding ring 51 to displace under the guiding action of the guiding track groove 6, and thus the spiral motion of the rotating sleeve 2 relative to the central guiding tube 1 can be realized.
[0044] Further, as Figure 4 shown, a plurality of arc-shaped guiding pieces 52 are provided. Correspondingly, the mounting positions of the balls 53 on the plurality of arc-shaped guiding pieces 52 are different; specifically, the plurality of balls 53 are arranged in a staggered manner along the axial direction of the guiding ring 51 and at equal intervals.
[0045] In a specific implementation manner of this embodiment, as Figure 3 、 Figure 4 shown, four arc-shaped guiding pieces 52 are provided, and the four arc-shaped guiding pieces 52 are arranged at intervals of 90°. Correspondingly, four balls 53 are also provided, and the four balls 53 are arranged at intervals of 90° in the circumferential direction. At the same time, the axial distance between adjacent balls 53 is 1 / 4 of the pitch of the guiding track groove 6.
[0046] During implementation, rotating the guiding ring 51 can sequentially screw a plurality of balls 53 into the guiding track groove 6, so that the plurality of balls 53 can all cooperate with the guiding track groove 6; further, when the rotating sleeve 2 rotates under the drive of the driving device, the ball 53 moves along the extending direction of the guiding track groove 6, and thus the axial displacement of the guiding ring 51 is realized, and while driving the rotating sleeve 2 to rotate, the displacement is also realized through the guiding ring 51, and finally the scanning assembly is driven to perform a spiral motion relative to the device main body.
[0047] It should be noted that: in this embodiment, there is no need to provide a linear driving mechanism. Only by driving the rotating sleeve 2 to rotate through the driving device, the rotational motion and linear displacement of the scanning assembly fixedly connected to the rotating sleeve 2 can be realized. Its linear motion realizes displacement self-driving through the rolling of the ball 53 along the guiding track groove 6. Only by one rotating motor can the spiral motion of the rotating sleeve 2 be realized, and thus the spiral scanning of the object to be measured by the scanning assembly fixedly connected thereto can be realized.
[0048] The motion driving mode of the rotating sleeve 2 in this embodiment omits the linear driving mechanism, realizes only setting the rotational driving mechanism, and realizes its linear displacement while driving the rotating sleeve 2 to rotate by one rotating motor. That is, this embodiment realizes the spiral driving of the rotating sleeve 2. Further, when the scanning assembly emits high-energy rays to perform slice scanning on the object to be measured, a spiral CT scan image of the object to be measured can be synthesized.
[0049] The above are only the preferred specific embodiments 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 thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model.
Claims
1. A linear self-driven sleeve structure, characterized in that Comprising: A central guide tube (1), a rotating sleeve (2), a flange (3) and a guide bracket (5). The central guide tube (1) is a hollow circular tube, and its interior is used to place the workpiece to be detected; the rotating sleeve (2) is sleeved outside the central guide tube (1); one end of the rotating sleeve (2) is fixedly installed with a flange (3), and the other end is connected with a guide bracket (5); the flange (3) is used to connect the driving device and can rotate under the drive of the driving device; a guide track groove (6) is arranged on the outer surface of the central guide tube (1), and the guide track groove (6) is spiral; a ball (53) is arranged on the inner side of the guide bracket (5), and the ball (53) is in rolling fit with the guide track groove (6); when the rotating sleeve (2) rotates, the ball (53) moves along the guide track groove (6) to realize the displacement of the rotating sleeve (2) in the axial direction relative to the axis of the central guide tube (1).
2. The linear self-driving sleeve structure according to claim 1, wherein The guide bracket (5) further comprises: a guide ring (51) and an arc-shaped guide piece (52); one end of the guide ring (51) is fixedly connected with the rotating sleeve (2), and a plurality of arc-shaped guide pieces (52) are circumferentially arranged at the other end, and a ball (53) is nested and installed on the inner side of the arc-shaped guide piece (52).
3. The linear self-driving sleeve structure according to claim 1 or 2, characterized in that, Two rotating sleeves (2) are symmetrically arranged; flanges (3) are fixedly installed at the opposite end parts of the two rotating sleeves (2).
4. The linear self-driven sleeve structure according to claim 3, characterized in that, Limit rings (4) are fixedly installed at the outer ends of the rotating sleeves (2); the limit rings (4) are slidably sleeved outside the central guide tube (1), and the guide brackets (5) are fixedly installed on the outer sides of the limit rings (4).
5. The linear self-driving sleeve structure according to claim 4, characterized in that, The inner arc surface of the limit ring (4) is attached to the outer surface of the central guide tube (1).
6. The linear self-driven sleeve structure according to claim 1, wherein The cross-section of the guide track groove (6) is an arc surface.
7. The linear self-driving sleeve structure according to claim 2, wherein, The installation positions of the balls (53) on the plurality of arc-shaped guide pieces (52) are different.
8. The linear self-driving sleeve structure according to claim 7, wherein The plurality of arc-shaped guide pieces (52) are evenly distributed along the circumferential direction of the guide ring (51).
9. The linear self-driven sleeve structure according to claim 8, wherein, The plurality of balls (53) are arranged in a staggered manner in the axial direction of the guide ring (51) and have equal spacing.
10. The linear self-driving sleeve structure according to claim 9, wherein Four arc-shaped guide pieces (52) and balls (53) are provided, and the axial spacing between adjacent balls (53) is 1 / 4 of the pitch of the guide track groove (6).