Auxiliary tool for quickly replacing MR coil

Abstract

The utility model relates to the field of magnetic resonance, and discloses an MR coil rapid replacement auxiliary tool which comprises a cart, a lifting platform is installed at the top end of the cart, positioning blocks are connected to the inner walls of a plurality of sliding rails in a sliding mode, first fixing blocks are fixedly connected to the front sides of the positioning blocks, first gears are rotationally connected to the interiors of the first fixing blocks, and second gears are rotationally connected to the interiors of the first fixing blocks. And a plurality of second gears are rotationally connected into the first fixing block, racks are connected to the outer walls of the second gears in a meshed mode, a conical block is fixedly connected to the front sides of the racks, the outer wall of the conical block is sleeved with a rubber ring, and an extending assembly is arranged at the top end of the positioning block. When the MR coil needs to be replaced, the device is conveyed to a proper position through the cart, the gear set is conveyed to the center of the coil through the lifting table, the conical block can open the rubber ring, the outer wall of the rubber ring can make contact with the coil to be fixed, and personnel can conveniently replace or overhaul the MR coil.

Description

Technical Field

[0001] This utility model relates to the field of magnetic resonance imaging, and in particular to an auxiliary tool for quick replacement of MR coils. Background Technology

[0002] During an MRI scan, the magnetic resonance coil initially functions as a transmitting antenna. It receives radio frequency pulse signals from the MRI system's radio frequency generator and then transmits these signals at specific frequencies and intensities into the space containing the scanned human body or object. The frequencies of these radio frequency pulses match the precession frequencies of hydrogen protons in the human tissue, causing the hydrogen protons to resonate magnetically, resulting in a deflection of the macroscopic magnetization vector.

[0003] If a magnetic resonance coil is not replaced or maintained for a long period of time, it will lead to a decrease in signal reception during magnetic resonance imaging, resulting in problems such as blurred images and increased noise. At the same time, hardware aging may cause equipment failure or safety hazards. Therefore, in order to extend its service life, the coil needs to be disassembled and maintained regularly. Usually, multiple people are needed to carry out the disassembly and assembly process, which is time-consuming and has many unstable factors that can easily damage the coil. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an auxiliary tool for quick replacement of MR coils, which aims to improve the problem of inconvenient disassembly and replacement of MR coils.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary tool for quick replacement of MR coils, including a trolley, a lifting platform mounted on the top of the trolley, multiple slide rails on the top of the lifting platform, positioning blocks slidably connected to the inner walls of the multiple slide rails, a first motor fixedly connected to the front side of the inner side of the positioning block, a first fixing block fixedly connected to the front side of the positioning block, a first gear rotatably connected to the inside of the first fixing block, multiple second gears rotatably connected to the inside of the first fixing block, racks meshing with the outer walls of the multiple second gears, a conical block fixedly connected to the front side of the multiple racks, a rubber ring sleeved on the outer wall of the conical block, and an extension component at the top of the positioning block.

[0006] Preferably, the extension component includes multiple limiting blocks, which are slidably connected to the inner wall of the positioning block. A second motor is fixedly connected to the bottom of each limiting block, and a threaded screw is rotatably connected to the inner wall of each limiting block. A second fixing block is slidably connected to adjacent sides of the multiple limiting blocks, and a boom is fixedly connected to the outer wall of the second fixing block. A hook is movably connected to the inner wall of the boom.

[0007] Preferably, a counterweight box is fixedly connected to the top rear side of the trolley.

[0008] Preferably, the first gear is fixedly connected to the output end of the first motor, and the outer walls of the plurality of racks are slidably connected to the inner wall of the first fixed block.

[0009] Preferably, the threaded screw is fixedly connected to the output end of the second motor, and the second fixing block is threadedly connected to the outer wall of the threaded screw.

[0010] Preferably, the boom is slidably connected to one side of the two limiting blocks.

[0011] Preferably, the rubber band is made of ethylene propylene rubber.

[0012] Preferably, the second gear meshes with the outer wall of the first gear.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, when the MR coil needs to be replaced, the equipment is transported to a suitable position by a trolley. The lifting platform and the forward and backward movement of the positioning block are used to transport the gear set to the center of the coil. After the first motor is started, it will drive the first gear fixed inside the first fixed block to rotate. The first gear drives the second gear to rotate, and the second gear will drive the rack to move. The conical block fixed on the front side of the rack will open the rubber ring, and the outer wall of the rubber ring will contact the coil to fix it, which is convenient for personnel to replace or repair.

[0015] 2. In this utility model, when the coil needs to be replaced after it is removed, the limiting block fixed on the top of the positioning block is moved forward to a suitable position, and then the second motor is started. The second motor drives the threaded screw to rotate, and the threaded screw will move the second fixing block up and down. The hook in front of the boom fixed on the second fixing block hooks the coil, which can be disassembled and installed by personnel. The counterweight box behind the trolley can prevent the front side from tilting forward due to excessive weight. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the MR coil quick replacement auxiliary tool proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the gear set of the MR coil quick-change auxiliary tool proposed in this utility model;

[0018] Figure 3 This is a side cross-sectional view of the MR coil quick-change auxiliary tool proposed in this utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the boom of the auxiliary tool for quick replacement of MR coils proposed in this utility model.

[0020] Legend:

[0021] 1. Trolley; 2. Lifting platform; 3. Slide rail; 4. Positioning block; 5. First fixing block; 6. First gear; 7. Second gear; 8. Rack; 9. Conical block; 10. Rubber ring; 11. First motor; 12. Limiting block; 13. Threaded screw; 14. Boom; 15. Hook; 16. Second motor; 17. Second fixing block; 18. Counterweight box. Detailed Implementation

[0022] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Reference Figure 1 , Figure 2 An embodiment of this utility model provides a quick replacement auxiliary tool for MR coils, including a trolley 1, a lifting platform 2 mounted on the top of the trolley 1, multiple slide rails 3 on the top of the lifting platform 2, positioning blocks 4 slidably connected to the inner walls of the multiple slide rails 3, a first motor 11 fixedly connected to the front side of the inner side of the positioning block 4, a first fixing block 5 fixedly connected to the front side of the positioning block 4, a first gear 6 rotatably connected to the inside of the first fixing block 5, multiple second gears 7 rotatably connected to the inside of the first fixing block 5, racks 8 meshing with the outer walls of the multiple second gears 7, a conical block 9 fixedly connected to the front side of the multiple racks 8, a rubber ring 10 sleeved on the outer wall of the conical block 9, and an extension component at the top of the positioning block 4.

[0024] Specifically, the trolley 1 moves the top device to a suitable position, and the lifting platform 2 and the positioning block 4 move back and forth to transport the gear set to the center of the coil. Then, the first motor 11 is started to drive the first gear 6 inside the first fixed block 5. The first gear 6 drives the second gear 7, and the second gear 7 drives the rack 8. The conical block 9 fixedly connected to the top of the rack 8 will open the rubber ring 10 and then fix the MR coil for easy maintenance and replacement.

[0025] Reference Figure 3 , Figure 4 The extension component includes multiple limiting blocks 12, which are slidably connected to the inner wall of the positioning block 4. A second motor 16 is fixedly connected to the bottom of the limiting block 12, and a threaded screw 13 is rotatably connected to the inner wall of the limiting block 12. A second fixing block 17 is slidably connected to the adjacent side of the multiple limiting blocks 12. A boom 14 is fixedly connected to the outer wall of the second fixing block 17, and a hook 15 is movably connected to the inner wall of the boom 14.

[0026] Specifically, when it is necessary to lift the MR coil, the lifting arm 14 is moved to the position by moving the two limit blocks 12 connected to the positioning block 4. The lifting arm 14 is fixed on the second fixing block 17. The upper and lower positions can be adjusted by the threaded screw 13 driven by the second motor 16. Then, the hook 15 is moved above the coil fixed by the MR rubber ring 10, so that the coil can be lifted for replacement.

[0027] Reference Figure 1 A counterweight box 18 is fixedly connected to the top rear side of the trolley 1.

[0028] Specifically, the counterweight box 18 at the rear of the trolley 1 can prevent excessive weight on the front side from causing it to tip forward.

[0029] Reference Figure 2 The first gear 6 is fixedly connected to the output end of the first motor 11, and the outer walls of the multiple racks 8 are slidably connected to the inner wall of the first fixed block 5.

[0030] Specifically, the first motor 11 outputs to the first gear 6, which in turn drives the second gear 7 to rotate, and then drives the rack 8 to move. The first fixing block 5 is used to fix the travel path of the rack 8.

[0031] Reference Figure 3 The threaded screw 13 is fixedly connected to the output end of the second motor 16, and the second fixing block 17 is threadedly connected to the outer wall of the threaded screw 13.

[0032] Specifically, the second motor 16 drives the threaded screw 13 to raise and lower the second fixed block 17.

[0033] Reference Figure 4 The boom 14 is slidably connected to the adjacent side of the two limit blocks 12.

[0034] Specifically, the inner part of the boom 14 is fixed to the outer wall of the second fixed block 17, which is on the same side of the two limiting blocks 12, so that it will not shift to the sides when sliding up and down.

[0035] Reference Figure 2 The rubber band 10 is made of ethylene propylene rubber.

[0036] Specifically, ethylene propylene rubber is weather-resistant, water-resistant, insulating, elastic, and resistant to aging and corrosion.

[0037] Reference Figure 2 The second gear 7 is engaged with the outer wall of the first gear 6.

[0038] Specifically, the first gear 6 drives the second gear 7 to rotate, the second gear 7 drives the rack 8 to move, and the conical block 9 fixed at the front end of the rack 8 can open the rubber ring 10 to fix the MR coil.

[0039] Working principle: When the equipment is needed, the trolley 1 transports the equipment to a suitable position. The lifting platform 2 and the positioning block 4 move back and forth to transport the gear set to the center of the coil. After the first motor 11 is started, it will drive the first gear 6 fixed inside the first fixed block 5 to rotate. The first gear 6 drives the second gear 7 to rotate. The second gear 7 will drive the rack 8 to move. The conical block 9 fixed on the front side of the rack 8 will open the rubber ring 10. The outer wall of the rubber ring 10 will contact the coil to fix it, making it easy for personnel to disassemble.

[0040] When the coil needs to be replaced after it has been removed, move the limiting block 12 fixed on the top of the positioning block 4 forward to the appropriate position, and then start the second motor 16. The second motor 16 drives the threaded screw 13 to rotate, and the threaded screw 13 will move the second fixing block 17 up and down. The hook 15 in front of the boom 14 fixed on the second fixing block 17 hooks the coil, which can be disassembled and installed by personnel. The counterweight box 18 behind the trolley 1 can prevent the front side from tilting forward due to excessive weight.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary tool for quick replacement of MR coils, including a trolley (1), characterized in that: The top of the trolley (1) is equipped with a lifting platform (2), and the top of the lifting platform (2) is provided with multiple slide rails (3). The inner walls of the multiple slide rails (3) are slidably connected with positioning blocks (4). The front side of the interior of the positioning block (4) is fixedly connected with a first motor (11). The front side of the positioning block (4) is fixedly connected with a first fixing block (5). The interior of the first fixing block (5) is rotatably connected with a first gear (6). The interior of the first fixing block (5) is rotatably connected with multiple second gears (7). The outer walls of the multiple second gears (7) are meshed with racks (8). The front side of the multiple racks (8) is fixedly connected with a conical block (9). The outer wall of the conical block (9) is fitted with a rubber ring (10). The top of the positioning block (4) is provided with an extension component.

2. The MR coil quick-change auxiliary tool according to claim 1, characterized in that: The extension assembly includes multiple limiting blocks (12), which are slidably connected to the inner wall of the positioning block (4). A second motor (16) is fixedly connected to the bottom of the limiting block (12), and a threaded screw (13) is rotatably connected to the inner wall of the limiting block (12). A second fixing block (17) is slidably connected to the adjacent side of the multiple limiting blocks (12). A boom (14) is fixedly connected to the outer wall of the second fixing block (17), and a hook (15) is movably connected to the inner wall of the boom (14).

3. The MR coil quick-change auxiliary tool according to claim 1, characterized in that: A counterweight box (18) is fixedly connected to the top rear side of the trolley (1).

4. The MR coil quick-change auxiliary tool according to claim 1, characterized in that: The first gear (6) is fixedly connected to the output end of the first motor (11), and the outer walls of the plurality of racks (8) are slidably connected to the inner wall of the first fixed block (5).

5. The MR coil quick-change auxiliary tool according to claim 2, characterized in that: The threaded screw (13) is fixedly connected to the output end of the second motor (16), and the second fixing block (17) is threadedly connected to the outer wall of the threaded screw (13).

6. The MR coil quick-change auxiliary tool according to claim 2, characterized in that: The boom (14) is slidably connected to one side of the two limiting blocks (12).

7. The MR coil quick-change auxiliary tool according to claim 1, characterized in that: The rubber ring (10) is made of ethylene propylene rubber.

8. The MR coil quick-change auxiliary tool according to claim 1, characterized in that: The second gear (7) meshes with the outer wall of the first gear (6).

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