Gradient coil dismounting tool of nuclear magnetic resonance equipment

Abstract

The utility model relates to the technical field of gradient coil dismounting tools, in particular to a gradient coil dismounting tool of nuclear magnetic resonance equipment, which comprises a mounting frame and a positioning ring, a fixing plate is fixedly connected in the mounting frame, a guide rail is fixedly connected at the top end of the fixing plate, and the positioning ring is welded on the left section of a flange plate. The outer side end of the positioning ring is provided with a guide hole, the inner side end of the positioning ring is provided with an arc block, and the axis of the positioning ring is provided with a fixing structure. After the gradient coil main body is clamped from the inside, the two groups of telescopic push rods are started to respectively push and pull, the gradient coil main body can be quickly disassembled and assembled, the roller is arranged at the bottom end of the positioning ring, the roller can slide, and the roller is in sliding connection with the guide rail, so that the gradient coil main body can be quickly disassembled and assembled. And the gradient coil main body can be disassembled and assembled in a more labor-saving manner after sliding guiding is carried out through the roller and the guide rail, so that the disassembling and assembling efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gradient coil disassembly and assembly tools, in particular to a gradient coil disassembly and assembly tool for nuclear magnetic resonance equipment. Background Art

[0002] Nuclear magnetic resonance, also known as nuclear magnetic resonance imaging technology, is another major advancement in medical imaging after CT. The gradient coil is one of the components of the magnetic resonance imaging device, more specifically, one of the coil systems laid on the magnet of the magnetic resonance imaging device. It is used to attach additional coils with gradient magnetic fields that increase (or decrease) according to the location on the main magnetic field. In actual work, the gradient coil system must provide at least three gradient magnetic fields, namely, layer selection gradient, frequency encoding gradient and phase encoding gradient. The coil needs to be disassembled after long-term use, so a coil disassembly tool is needed.

[0003] As disclosed in the patent document with publication number CN206561385U, a gradient coil installation tool comprises a main body, the main body comprises a plurality of detachably connected slide rails, and a plurality of support frames supporting the slide rails and detachably connected to the slide rails, the support frames being height-adjustable; a sliding device for supporting the inner ring wall of the gradient coil is arranged on the slide rail, the sliding device comprises a conveying plate, a first roller is arranged on the conveying plate so that it can reciprocate along the slide rail; second rollers are arranged on opposite ends of the conveying plate perpendicular to its movement direction to abut against the inner ring wall of the gradient coil; however, this prior art still has many shortcomings, for example: the gradient coil cannot be quickly disassembled and assembled when the device is put into use, and the common installation of the gradient coil is usually performed by manually aligning the position and then pushing it into the inside of the nuclear magnetic resonance instrument for installation, which is a laborious process and has great safety hazards. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a gradient coil disassembly and assembly tool for a nuclear magnetic resonance device.

[0005] To achieve the above object, the utility model provides the following technical solution: a gradient coil disassembly and assembly tool for a nuclear magnetic resonance device, comprising a mounting frame and a positioning ring, wherein a fixing plate is fixedly connected to the inside of the mounting frame, a guide rail is fixedly connected to the top of the fixing plate, a telescopic push rod is fixed to the top of the inside of the mounting frame, and a flange plate is fixed to the output end of the telescopic push rod;

[0006] A positioning ring is welded to the left section of the flange plate, a guide hole is arranged at the outer end of the positioning ring, an arc block is installed at the inner end of the positioning ring, and a fixing structure is arranged at the axis of the positioning ring.

[0007] Preferably, the fixing structure includes a fixing plate, a guide groove and a roller, the fixing plate is arranged on the axis of the positioning ring, the surface of the fixing plate is provided with a guide groove, one end of the guide groove is slidably connected with a positioning block, the top of the positioning block is fixed with a fixing rod, the top of the fixing rod is fixed with a rubber block, the bottom end of the positioning ring is provided with a groove, and the roller is arranged at the bottom end of the positioning ring.

[0008] Preferably, the rubber block is installed on the top end of the fixing rod, and the surface of the rubber block is provided with cross-shaped anti-slip grooves.

[0009] Preferably, the rollers are arranged at the bottom end of the positioning ring, and two groups of the rollers are arranged.

[0010] Preferably, a connecting rod is fixed to the right end of the fixed plate, a hand rod is fixed to the right end of the connecting rod, fixing screws are threadedly connected to the front and rear ends of the flange plate, and a gradient coil body is provided at the outer end of the positioning ring.

[0011] Preferably, the guide rail is fixed on the top end of the fixing plate, and the shape of the guide rail is "concave".

[0012] Preferably, the flange plate is fixed to the right end of the positioning ring, a square hole is opened in the center of the flange plate, and the connecting rod passes through the hole opened in the center of the flange plate.

[0013] Preferably, the guide holes are arranged at the outer end of the positioning ring, and there are three groups of guide holes distributed at equal intervals about the axis of the positioning ring.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, two groups of mounting frames are oppositely mounted at the front and rear ends of the nuclear magnetic resonance device, and the position of the positioning ring is adjusted to the inside of the gradient coil body installed inside the nuclear magnetic resonance device. After the positioning ring is roughly positioned, the hand rod is rotated and the fixed plate is driven to rotate through the connected connecting rod. The position of the positioning block installed inside the guide groove arranged on the surface of the fixed plate will change its position and move along the guide groove through the rotation of the fixed plate, so that the position of the positioning block and the fixing rod fixed on the top of the positioning block can be changed. A total of three groups are provided, and the fixing rod can be fixed to prevent it from falling off after it contacts the inner wall of the gradient coil body. The rubber block can increase the friction force to ensure firmness. Further, when the user clamps the gradient coil body from the inside, the two groups of telescopic push rods are started to push and pull respectively, so that the gradient coil body can be quickly disassembled and assembled. By installing a roller at the bottom end of the positioning ring, the roller can slide, and the roller and the guide track form a sliding connection. After the roller and the guide track are slid and guided, the gradient coil body can be disassembled and assembled more labor-savingly, which improves the efficiency of the device for disassembly and assembly, thereby achieving the purpose of facilitating the device to quickly disassemble and assemble the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the main body of the utility model from the first perspective;

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the main body of the utility model from a second viewing angle;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the limit plate of the utility model;

[0021] Figure 5 It is a three-dimensional structural diagram of the fixed structure of the utility model;

[0022] In the figure: 1, mounting frame; 2, fixing plate; 3, guide rail; 4, telescopic push rod; 5, flange plate; 6, positioning ring; 7, guide hole; 8, fixing structure; 801, fixing plate; 802, guide groove; 803, positioning block; 804, fixing rod; 805, rubber block; 806, roller; 9, arc block; 10, connecting rod; 11, hand lever; 12, fixing screw; 13, gradient coil body. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0024] A gradient coil disassembly and assembly tool for a nuclear magnetic resonance device, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a gradient coil disassembly and assembly tool for a nuclear magnetic resonance device includes a mounting frame 1 and a positioning ring 6. A fixing plate 2 is fixedly connected inside the mounting frame 1, a guide rail 3 is fixedly connected to the top of the fixing plate 2, a telescopic push rod 4 is fixed to the top of the mounting frame 1, and a flange plate 5 is fixed to the output end of the telescopic push rod 4.

[0025] A positioning ring 6 is welded to the left section of the flange plate 5. When the coil needs to be removed, the positioning ring 6 is placed inside the coil. A guide hole 7 is provided at the outer end of the positioning ring 6, an arc block 9 is installed at the inner end of the positioning ring 6, and a fixing structure 8 is provided at the axis of the positioning ring 6.

[0026] like Figure 4 and Figure 5 As shown, the fixed structure 8 includes a fixed plate 801, a guide groove 802 and a roller 806. The fixed plate 801 is arranged on the axis of the positioning ring 6. The surface of the fixed plate 801 is provided with a guide groove 802. One end of the guide groove 802 is slidably connected with a positioning block 803. The top of the positioning block 803 is fixed with a fixed rod 804. The top of the fixed rod 804 is fixed with a rubber block 805. The rubber block 805 is installed on the top of the fixed rod 804. The surface of the rubber block 805 is provided with a cross-shaped anti-slip pattern. The bottom end of the positioning ring 6 is provided with a groove. The roller 806 is arranged at the bottom end of the positioning ring 6. The roller 806 is arranged at the bottom end of the positioning ring 6. Two groups of rollers 806 are provided.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a connecting rod 10 is fixed to the right end of the fixed plate 801, a hand rod 11 is fixed to the right end of the connecting rod 10, fixing screws 12 are threadedly connected to the front and rear ends of the flange plate 5, a gradient coil body 13 is arranged at the outer end of the positioning ring 6, a guide track 3 is fixed to the top of the fixed plate 2, and the shape of the guide track 3 is "concave", the flange plate 5 is fixed to the right end of the positioning ring 6, a square hole is opened in the center of the flange plate 5, the connecting rod 10 passes through the hole opened in the center of the flange plate 5, the guide hole 7 is arranged at the outer end of the positioning ring 6, and three groups of guide holes 7 are distributed at equal intervals about the axis of the positioning ring 6.

[0028] When the embodiment 1 is working, the two sets of mounting frames 1 are mounted opposite to each other at the front and rear ends of the nuclear magnetic resonance device, and the position of the positioning ring 6 is adjusted to the inside of the gradient coil body 13 installed inside the nuclear magnetic resonance device. After the positioning ring 6 is roughly positioned, the hand rod 11 is rotated and the fixed plate 801 is driven to rotate through the connected connecting rod 10. The position of the positioning block 803 installed inside the guide groove 802 set on the surface of the fixed plate 801 will change its position and move along the guide groove 802 through the rotation of the fixed plate 801, so that the position of the positioning block 803 and the fixing rod 804 fixed on the top of the positioning block 803 can be changed. A total of three sets are provided, which can be fixed After the rod 804 contacts the inner wall of the gradient coil body 13, it is fixed to prevent it from falling off. The rubber block 805 can increase the friction to ensure firmness. After the three groups of fixing rods 804 clamp the gradient coil body 13, the two groups of telescopic push rods 4 are started to push and pull respectively, so that the gradient coil body 13 can be quickly disassembled and assembled. By installing a roller 806 at the bottom end of the positioning ring 6, the roller 806 can slide, and the roller 806 and the guide rail 3 form a sliding connection. After the roller 806 and the guide rail 3 are slidably guided, the gradient coil body 13 can be disassembled and assembled more labor-savingly, thereby improving the efficiency of disassembling and assembling the gradient coil of the nuclear magnetic resonance equipment.

[0029] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A gradient coil disassembly and assembly tool for a nuclear magnetic resonance device, comprising a mounting frame (1) and a positioning ring (6), characterized in that: A fixing plate (2) is fixedly connected to the interior of the mounting frame (1), a top end of the fixing plate (2) is fixedly connected to a guide rail (3), a telescopic push rod (4) is fixed to the top end of the interior of the mounting frame (1), and a flange plate (5) is fixed to the output end of the telescopic push rod (4); A positioning ring (6) is welded to the left section of the flange plate (5); a guide hole (7) is provided at the outer end of the positioning ring (6); an arc block (9) is installed at the inner end of the positioning ring (6); a fixing structure (8) is provided at the axis of the positioning ring (6); the fixing structure (8) comprises a fixing plate (801), a guide groove (802) and a roller (806).

2. A gradient coil disassembly and assembly tool for a nuclear magnetic resonance device according to claim 1, characterized in that: The fixing plate (801) is arranged at the axis of the positioning ring (6); a guide groove (802) is provided on the surface of the fixing plate (801); a positioning block (803) is slidably connected to one end of the guide groove (802); a fixing rod (804) is fixed to the top end of the positioning block (803); a rubber block (805) is fixed to the top end of the fixing rod (804); a groove is provided at the bottom end of the positioning ring (6); and the roller (806) is arranged at the bottom end of the positioning ring (6).

3. A gradient coil disassembly and assembly tool for a nuclear magnetic resonance device according to claim 2, characterized in that: The rubber block (805) is mounted on the top end of the fixing rod (804), and the surface of the rubber block (805) is provided with cross-shaped anti-slip grooves.

4. The gradient coil disassembly and assembly tool for a nuclear magnetic resonance device according to claim 2, characterized in that: The rollers (806) are provided in two groups.

5. The gradient coil disassembly and assembly tool for a nuclear magnetic resonance device according to claim 2, characterized in that: A connecting rod (10) is fixed to the right end of the fixing plate (801), a hand lever (11) is fixed to the right end of the connecting rod (10), fixing screws (12) are threadedly connected to the front and rear ends of the flange plate (5), and a gradient coil body (13) is provided at the outer end of the positioning ring (6).

6. The gradient coil disassembly and assembly tool for a nuclear magnetic resonance device according to claim 1, characterized in that: The guide rail (3) is fixed on the top end of the fixed plate (2), and the shape of the guide rail (3) is "concave".

7. The gradient coil disassembly and assembly tool for a nuclear magnetic resonance device according to claim 5, characterized in that: The flange plate (5) is fixed to the right end of the positioning ring (6), a square hole is provided at the center of the flange plate (5), and the connecting rod (10) passes through the hole provided at the center of the flange plate (5).

8. The gradient coil disassembly and assembly tool for a nuclear magnetic resonance device according to claim 1, characterized in that: The guide holes (7) are arranged at the outer end of the positioning ring (6), and three groups of the guide holes (7) are distributed at equal intervals about the axis of the positioning ring (6).

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