Driving device of spiral CT machine

Abstract

The utility model relates to a driving device of a spiral CT (Computed Tomography) machine, belongs to the technical field of CT driving, and solves the problem that the use scene of the spiral CT machine is limited due to the fact that the spiral CT machine in the prior art can only realize rotary motion. A driving device of a spiral CT machine comprises a rotation driving assembly and a displacement driving assembly. The rotation driving assembly and the displacement driving assembly are respectively used for driving the scanning assembly to rotate and linearly move; the rotary driving assembly is slidably mounted above the displacement driving assembly and can be driven by the displacement driving assembly to integrally move; and the spiral motion of the scanning assembly is realized. According to the driving device, rotation driving and displacement driving of the CT scanning assembly can be conducted at the same time, and then the CT scanning assembly can be driven to achieve spiral scanning.

Description

Technical Field

[0001] The utility model relates to the technical field of CT machines, in particular to a driving device for a spiral CT machine. Background Art

[0002] The existing CT scanning system has a large floor area and is inconvenient to use; moreover, most of the existing CT scanning systems are of a fixed structure and are fixedly immovable as a whole. During scanning, the item to be measured needs to move linearly; CT scanning cannot be performed on fixed structures / items, and its practical application is limited.

[0003] Therefore, a driving device for a spiral CT machine is needed to provide rotational drive and linear displacement drive for its scanning assembly, so as to realize the automatic spiral scanning of the CT system and overcome the problem of difficult scanning in the fixed state of the item. Summary of the Utility Model

[0004] In view of the above analysis, the utility model aims to provide a driving device for a spiral CT machine to solve the problem that the existing scanning equipment can only achieve rotational motion, and during spiral scanning, the item to be measured needs to move linearly for scanning, making it inconvenient to scan fixed items.

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

[0006] A driving device for a spiral CT machine includes: a rotational drive assembly and a displacement drive assembly;

[0007] The rotational drive assembly and the displacement drive assembly are respectively used to drive the scanning assembly to rotate and linearly displace; the rotational drive assembly is slidably installed above the displacement drive assembly and can be displaced as a whole under the drive of the displacement drive assembly;

[0008] The rotational drive assembly includes: a mounting frame, a first drive motor, a first gear, and a second gear; the scanning assembly is rotatably installed on the mounting frame and is fixedly connected to the second gear; the second gear is in meshing transmission with the first gear; the first gear is rotatably installed on the mounting frame, and the first drive motor can drive the first gear to rotate;

[0009] The displacement drive assembly includes: a sliding support plate, a linear slide rail, a base, and a second drive motor; the mounting frame is fixedly installed above the sliding support plate, and the sliding support plate is slidably matched with the linear slide rail; the linear slide rail is fixedly installed on the base and can be linearly displaced under the drive of the second drive motor.

[0010] Further, two linear slide rails are arranged in parallel.

[0011] Further, a sliding block is fixedly installed at the bottom of the mounting frame, and the second driving motor drives the sliding block to linearly displace through a linear push rod.

[0012] Further, the second driving motor is a linear motor; the linear push rod is fixedly connected to the sliding block.

[0013] Further, the second driving motor is a rotary motor; the linear push rod is a threaded lead screw and is threadedly connected to the sliding block.

[0014] Further, the mounting frame includes: a first support frame, a second support frame, and a sliding bottom plate; the first support frame and the second support frame have the same structure and are arranged parallel to each other; the sliding bottom plate is fixedly installed at the bottoms of the first support frame and the second support frame.

[0015] Further, limit blocks are provided at both ends of the base, and the limit blocks are used to limit the displacement stroke of the first support frame and / or the second support frame.

[0016] Further, positioning rings are provided in the middle of the first support frame and the second support frame, and slip rings are installed in the positioning rings.

[0017] Further, the scanning assembly is rotationally connected to the first support frame and the second support frame through the slip ring, and thus can rotate relative to the first support frame and the second support frame.

[0018] Further, when the rotation driving component drives the scanning assembly to rotate and at the same time the displacement driving component drives the mounting frame to linearly displace, the scanning assembly can achieve a helical motion.

[0019] The technical solution of the present utility model can at least achieve one of the following effects:

[0020] 1. The driving device of the spiral CT machine of the present utility model is a movable and rotatable design. In view of the problem that the workpiece to be measured cannot be disassembled for inspection, the rotation driving component and the displacement driving component are used to drive the scanning assembly to rotate and displace relative to the workpiece to be measured, so as to realize spiral CT scanning under the condition that the workpiece to be measured remains stationary, improving the application universality and applicability of the scanning equipment.

[0021] 2. The driving device of the spiral CT machine of the present utility model is provided with a mounting frame to support the scanning assembly, and the first driving motor installed on the mounting frame provides the power for rotational motion. The mounting frame is slidably installed on the displacement driving component, realizing the superposition motion of rotational motion and linear displacement, which is simple and convenient to operate and saves costs.

[0022] In the present utility model, the above technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present utility model will be described in the subsequent specification, and some advantages can be made obvious from the specification, or can be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained from the content specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings are only for the purpose of showing specific embodiments, and are not considered as a limitation to the present utility model. Throughout the drawings, the same reference signs denote the same components.

[0024] Figure 1 It is a schematic structural composition diagram of the spiral drive device for a CT machine of the present utility model;

[0025] Figure 2 It is a schematic structural composition diagram of the rotary drive bracket of the spiral drive device for a CT machine of the present utility model;

[0026] Figure 3 It is a schematic structural composition diagram of the displacement drive assembly of the spiral drive device for a CT machine of the present utility model;

[0027] Figure 4 It is a schematic diagram of the usage state of the spiral drive device for a CT machine of the present utility model.

[0028] Reference Signs:

[0029] 1 - Rotary drive assembly; 2 - Displacement drive assembly; 3 - Fixed outer sleeve; 4 - Rotary inner sleeve; 5 - Intermediate sleeve; 6 - Scanning assembly; 7 - Equipment housing;

[0030] 101 - First support frame; 102 - Second support frame; 103 - Positioning ring; 104 - First gear; 105 - Motor mounting seat; 106 - First drive motor; 107 - Sliding bottom plate; 108 - Slip ring; 109 - Second gear;

[0031] 201 - Sliding support plate; 202 - Linear slide rail; 203 - Base; 204 - Second drive motor; 205 - Linear push rod; 206 - Sliding block; 207 - Positioning block; 208 - Limiting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The preferred embodiments of the present utility model will be specifically described below with reference to the drawings. The 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, and are not used to limit the scope of the present utility model.

[0033] Embodiment 1

[0034] A specific embodiment of the present utility model discloses a spiral drive device for a CT machine, as Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, including: a rotary drive assembly 1 and a displacement drive assembly 2.

[0035] In a specific implementation manner of the present utility model, as Figure 2 , Figure 3 shown, the rotary drive assembly 1 is used to drive the scanning assembly 6 to rotate; the displacement drive assembly 2 is used to achieve the overall displacement of the rotary drive assembly 1.

[0036] In a specific implementation manner of the present invention, as Figure 2 shown, the rotary drive assembly 1 includes: a first support frame 101, a second support frame 102, a first drive motor 106, a first gear 104 and a second gear 109.

[0037] Furthermore, as Figure 1 shown, the first gear 104 is rotatably installed on the side surface of the second support frame 102 and is driven to rotate by the first drive motor 106.

[0038] Furthermore, positioning rings 103 are provided in the middle of both the first support frame 101 and the second support frame 102, and the scanning assembly 6 is rotatably installed in the positioning rings 103 through a rotary inner sleeve 4 and a slip ring 108, and thus can rotate relative to the first support frame 101 and the second support frame 102; as Figure 1 , Figure 2 shown.

[0039] As Figure 1 , Figure 4 shown, the scanning assembly 6 is fixedly connected to the rotary inner sleeve 4 and is rotatably connected to a fixed outer sleeve 3 through the rotary inner sleeve 4. The rotary inner sleeve 4 is rotatably installed on the positioning rings 103 of the first support frame 101 and the second support frame 102 and is fixedly connected to the second gear 109. Furthermore, the second gear 109 is in meshing transmission with the first gear 104; when the second gear 109 rotates, the rotary inner sleeve 4 can drive the scanning assembly 6 to rotate synchronously.

[0040] Further, the first driving motor 106 is fixedly installed on the motor mounting seat 105 on the side of the second support frame 102, and the output shaft of the first driving motor 106 is fixedly connected to the first gear 104, capable of driving the first gear 104 to rotate. That is to say, when the first driving motor 106 drives the second gear 109 to rotate through the first gear 104, the scanning assembly 6 and the second gear 109 rotate synchronously, thereby realizing the rotational drive of the scanning assembly 6.

[0041] In this embodiment, on the basis of the rotational movement, the scanning assembly 6 is superimposed with a linear displacement movement to achieve the overall helical movement, and thus the spiral CT scanning of stationary objects can be performed.

[0042] Specifically, the second gear 109 is rotatably installed in the positioning ring 103 through the slip ring 108.

[0043] Specifically, as Figure 2 shown, the first support frame 101 and the second support frame 102 are arranged in parallel; the bottoms of the first support frame 101 and the second support frame 102 are fixedly installed with a sliding bottom plate 107, and are slidably installed on the base 203 through the sliding bottom plate 107, as Figure 1 shown.

[0044] In a specific embodiment of the present invention, as Figure 3 shown, the displacement driving assembly 2 includes: a sliding support plate 201, a linear slide rail 202, a base 203, a second driving motor 204, a linear push rod 205, and a sliding block 206.

[0045] Specifically, the base 203 is fixedly arranged on the bottom plate of the scanning system housing 1.

[0046] Specifically, as Figure 3 shown, the linear slide rail 202 is fixedly arranged on the base 203, and the sliding support plate 201 is slidably engaged with the linear slide rail 202. The second driving motor 204 is used to drive the linear displacement of the sliding support plate 201.

[0047] Further, as Figure 1 shown, the sliding bottom plate 107 is fixedly connected to the sliding support plate 201; thus, the sliding bottom plate 107 can drive the first support frame 101, the second support frame 102, and the scanning assembly 6 to perform linear displacement.

[0048] Specifically, the sliding block 206 is fixedly connected to the bottom of the sliding bottom plate 107; and the sliding block 206 is connected to the second driving motor 204 through a linear push rod 205 and can linearly displace under the drive of the second driving motor 204; when the sliding block 206 displaces, it can drive the sliding bottom plate 107 to linearly displace, as Figure 3 shown.

[0049] In a specific embodiment of the present utility model, the first driving motor 204 is a linear motor, the linear push rod 205 is a columnar rod, and the linear push rod 205 is fixedly connected to the sliding block 206. Furthermore, the second driving motor 204 can drive the sliding block 206 to linearly displace.

[0050] In another specific embodiment of the present utility model, the first driving motor 204 is a rotary motor, the linear push rod 205 is a threaded lead screw. Correspondingly, the sliding block 206 is threadedly connected to the outside of the linear push rod 205; or the sliding block 206 is threadedly connected to the outside of the threaded lead screw through a ball nut. Furthermore, when the second driving motor 204 drives the linear push rod 205 to rotate, the linear push rod 205 can drive the sliding block 206 to linearly displace, thereby realizing the linear displacement drive of the scanning assembly 6.

[0051] Furthermore, both the sliding block 206 and the sliding support plate 201 are fixedly installed at the bottom of the mounting bracket.

[0052] Furthermore, a positioning block 207 is further provided on the linear push rod 205; one or two positioning blocks 207 are provided, which are used for fixedly connecting to the side surfaces of the first support frame 101 and / or the second support frame 102 to realize the positioning of the first support frame 101 and / or the second support frame 102. When the linear push rod 205 is a threaded lead screw, the positioning block 207 is threadedly connected to the linear push rod 205.

[0053] Furthermore, limit blocks 208 are further provided at both ends of the base 203, and the limit blocks 208 are used for restricting the displacement stroke of the first support frame 101 and / or the second support frame 102, thereby realizing the limit of the displacement stroke of the scanning assembly 6.

[0054] As Figure 3 shown, the second driving motor 204 is fixedly installed on the base 203 and can drive the linear push rod 205 to rotate. When the linear push rod 205 rotates, it can drive the sliding block 206 to linearly displace; specifically, the linear push rod 205 is threadedly connected to the sliding block 206.

[0055] Specifically, as Figure 4 shown, the fixed outer sleeve 3 is fixedly installed on the equipment housing 7.

[0056] Specifically, as Figure 4 shown, an intermediate sleeve 5 is installed inside the rotating inner sleeve 4, and the item to be measured is placed inside the intermediate sleeve 5. When the scanning assembly 6 performs a spiral movement, spiral scanning can be performed on the item to be measured.

[0057] During implementation:

[0058] The movement of the sliding block 206 is limited to a linear displacement by the mounting bracket, the sliding support plate 201, and the linear slide rail 202. The second drive motor 204, the linear push rod 205, and the sliding block 206 are used to drive the linear displacement of the sliding block 206. When the sliding block 206 moves linearly, it can drive the mounting bracket and the sliding support plate 201 to slide relative to the linear slide rail 202, and further drive the scanning assembly 6 on the mounting bracket to move linearly.

[0059] Furthermore, since the first drive motor 106 can drive the first gear 104 and the second gear 109 to rotate, realizing the rotational drive of the scanning assembly 6; then, while the scanning assembly 6 rotates, a linear displacement is superimposed, enabling its spiral movement, and thus enabling spiral scanning of stationary items.

[0060] The drive device of the spiral CT machine of the present utility model is designed to be movable and rotatable. To address the problem that the workpiece to be measured cannot be disassembled for inspection, the scanning assembly 6 is driven to rotate and displace relative to the workpiece to be measured through the rotation drive assembly 1 and the displacement drive assembly 2, realizing spiral CT scanning under the condition that the workpiece to be measured remains stationary, and improving the application universality and applicability of the scanning device.

[0061] The above is only the preferred specific implementation manner 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 driving device for a spiral CT machine, characterized in that, Comprising: A rotation drive assembly (1) and a displacement drive assembly (2); The rotation drive assembly (1) and the displacement drive assembly (2) are respectively used to drive the scanning assembly (6) to rotate and linearly displace; the rotation drive assembly (1) is slidably mounted above the displacement drive assembly (2) and can be integrally displaced under the drive of the displacement drive assembly (2); The rotation drive assembly (1) includes: a mounting frame, a first drive motor (106), a first gear (104) and a second gear (109); the scanning assembly (6) is rotatably mounted on the mounting frame and is fixedly connected to the second gear (109); the second gear (109) is in meshing transmission with the first gear (104); the first gear (104) is rotatably mounted on the mounting frame, and the first drive motor (106) can drive the first gear (104) to rotate; The displacement drive assembly (2) includes: a sliding support plate (201), a linear slide rail (202), a base (203) and a second drive motor (204); the mounting frame is fixedly mounted above the sliding support plate (201), and the sliding support plate (201) is in sliding fit with the linear slide rail (202); the linear slide rail (202) is fixedly mounted on the base (203) and can be linearly displaced under the drive of the second drive motor (204).

2. The drive device of the spiral CT machine according to claim 1, characterized in that, Two linear slide rails (202) are arranged in parallel.

3. The driving device of the spiral CT machine according to claim 1 or 2, characterized in that, The displacement drive assembly (2) further includes a sliding block (206); the sliding block (206) is fixedly mounted at the bottom of the mounting frame, and the second drive motor (204) drives the sliding block (206) to linearly displace through a linear push rod (205).

4. The drive device of the spiral CT machine according to claim 3, characterized in that, The second drive motor (204) is a linear motor; the linear push rod (205) is fixedly connected to the sliding block (206).

5. The drive device of the spiral CT machine according to claim 3, characterized in that, The second drive motor (204) is a rotary motor; the linear push rod (205) is a threaded lead screw and is threadedly connected to the sliding block (206).

6. The drive device of the spiral CT machine according to claim 4 or 5, characterized in that, The mounting frame includes: a first support frame (101), a second support frame (102) and a sliding bottom plate (107); the first support frame (101) and the second support frame (102) have the same structure and are arranged parallel to each other; the sliding bottom plate (107) is fixedly mounted at the bottoms of the first support frame (101) and the second support frame (102).

7. The drive device of the spiral CT machine according to claim 6, characterized in that, Limit blocks (208) are further provided at both ends of the base (203), and the limit blocks (208) are used to limit the displacement stroke of the first support frame (101) and / or the second support frame (102).

8. The drive device of the spiral CT machine according to claim 7, characterized in that, Positioning rings (103) are provided in the middle of both the first support frame (101) and the second support frame (102), and slip rings (108) are installed in the positioning rings (103).

9. The drive device of the spiral CT machine according to claim 8, characterized in that, The scanning assembly (6) is rotatably connected to the first support frame (101) and the second support frame (102) through the slip ring (108), and thus can rotate relative to the first support frame (101) and the second support frame (102).

10. The drive device of the spiral CT machine according to claim 9, characterized in that, When the rotation drive assembly (1) drives the scanning assembly (6) to rotate, and at the same time the displacement drive assembly (2) drives the mounting bracket to linearly displace, the scanning assembly (6) can achieve a helical motion.

Images