CN216285677U - Mandrel ejection mechanism of gradient coil - Google Patents
Mandrel ejection mechanism of gradient coil Download PDFInfo
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- CN216285677U CN216285677U CN202122843260.3U CN202122843260U CN216285677U CN 216285677 U CN216285677 U CN 216285677U CN 202122843260 U CN202122843260 U CN 202122843260U CN 216285677 U CN216285677 U CN 216285677U
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- gradient coil
- mandrel
- ejection mechanism
- puller
- mounting assembly
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- 238000010168 coupling process Methods 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model relates to a mandrel ejection mechanism of a gradient coil, which is used for ejecting a mandrel from the gradient coil; the ejection mechanism comprises a mounting assembly and a puller, wherein the mounting assembly can act on the gradient coil and is axially limited relative to the gradient coil; the puller is connected to the mounting assembly and can push against the mandrel along the axial direction of the gradient coil so as to separate the mandrel from the gradient coil. When the mandrel ejection mechanism of the gradient coil works, the mandrel can be axially ejected relative to the gradient coil by utilizing the structural characteristics of the puller, so that the mandrel is conveniently ejected from the gradient coil; meanwhile, the mandrel ejection mechanism is simple in structure, low in production cost and simple and convenient to operate, and further meets the use requirements of enterprises.
Description
Technical Field
The utility model relates to the technical field of magnetic resonance equipment, in particular to a mandrel ejection mechanism of a gradient coil.
Background
At present, the size of the existing gradient coil applied to clinical application is huge, and in order to eject a mandrel in the gradient coil out of the gradient coil, a large ejection force is usually required, so that the existing ejection mechanism for ejecting the mandrel is complex in structure, expensive in manufacturing cost and often needs to use hydraulic pressure or an air cylinder as a power source. However, the inner diameter of the gradient coil in the ultrahigh-field magnetic resonance equipment applied to animals is small, the size of the mandrel is also small, and the existing ejection mechanism for ejecting the mandrel cannot complete mandrel demoulding of the gradient coil in the ultrahigh-field magnetic resonance equipment applied to animal experiments.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a mandrel ejection mechanism for a gradient coil, which solves the above technical problems.
A mandrel ejection mechanism of a gradient coil is used for ejecting a mandrel from the gradient coil;
the mandrel ejection mechanism comprises a mounting assembly and a puller, wherein the mounting assembly can act on the gradient coil and is axially limited relative to the gradient coil; the puller is connected to the mounting assembly and can push the mandrel along the axial direction of the gradient coil so as to separate the mandrel from the gradient coil.
In the application, through the reasonable structural arrangement, when the mandrel ejection mechanism works, the mandrel can be axially ejected relative to the gradient coil by utilizing the structural characteristics of the puller, so that the mandrel is conveniently ejected out of the gradient coil; meanwhile, the mandrel ejection mechanism is simple in structure, low in production cost and simple and convenient to operate, and further meets the use requirements of enterprises.
In one embodiment, the mounting assembly includes a first retaining member, a second retaining member, and a connecting member, wherein the first retaining member is configured to abut against an end of the gradient coil in the axial direction; the puller is connected with the second limiting part, is used for being arranged at the other axial end part of the gradient coil and is abutted against the mandrel, and the second limiting part is connected with the first limiting part through the connecting piece.
It will be appreciated that, by the above-described structural arrangement, a structural arrangement of the mounting assembly is particularly realized, such that the mounting assembly, by abutment between the first limiting member and the gradient coil, achieves axial limiting between the mounting assembly and the gradient coil, so as to facilitate axial limiting of the gradient coil when the mounting assembly acts on the gradient coil.
In one embodiment, the first position-limiting member includes a first flange, the first flange is provided with a first flange hole, and an aperture of the first flange hole is larger than an outer diameter of the mandrel and smaller than an outer diameter of the gradient coil.
It can be understood that, through the structural arrangement, the structural arrangement of the first limiting part is specifically realized, so that when the puller pushes the mandrel, the mandrel can be separated from the gradient coil through the first flange hole of the first flange, and the purpose of pushing the mandrel out of the gradient coil is achieved; meanwhile, the first limiting part comprises a first flange, so that the first limiting part can be made of local materials, and the production cost of the first limiting part is reduced.
In one embodiment, the second position-limiting member includes a second flange, the second flange is provided with a second flange hole, and an aperture of the second flange hole is larger than an outer diameter of the gradient coil.
It can be understood that, by the above structural arrangement, the structural arrangement of the second limiting member is specifically realized, so that when the mounting assembly acts on the gradient coil, the second limiting member can be sleeved on the gradient coil, so as to facilitate the assembly of the second limiting member on the gradient coil; meanwhile, the second limiting part comprises a second flange, so that the second limiting part can be made of local materials, and the production cost of the second limiting part is reduced.
In one embodiment, the connecting member includes a screw rod, the screw rod is disposed through the first limiting member and the second limiting member, wherein one end of the screw rod abuts against the first limiting member, and the other end of the screw rod extends out of the second limiting member and is limited by a nut.
It can be understood that, through the above structural arrangement, the structural arrangement of the connecting member is specifically realized, so that the first limiting member and the second limiting member are connected and fixed; simultaneously, the connecting piece includes the screw rod for this connecting piece can use materials on the spot, and then has reduction in production cost's effect.
In one embodiment, the number of the screws is multiple, and the screws are arranged on the first limiting member and the second limiting member at intervals.
It can be understood that, through the structural arrangement, the number of the screw rods is specifically set, so that the stability of connection between the first limiting part and the second limiting part connected through the screw rods is improved.
In one embodiment, the puller comprises a push screw, a mounting seat and a plurality of connecting chucks, the push screw is in threaded connection with the mounting seat, one end of the push screw extends out of the mounting seat towards the mounting assembly and is used for abutting against the mandrel; the connecting chucks are rotatably mounted on the mounting base, wherein an end of each connecting chuck, which is far away from the mounting base, can be connected with the mounting assembly.
It can be understood that the structural arrangement of the puller is realized by the structural arrangement.
In one embodiment, the puller further comprises a plurality of connecting plates, and the connecting clamp is rotatably mounted on the mounting seat through the connecting plates.
It can be understood that, through the structural arrangement of the connecting plate, the rotary connection between the connecting chuck and the mounting seat is realized, so that the assembly connection between the connecting chuck and the mounting seat is facilitated.
In one embodiment, the connecting clips are uniformly distributed around the mounting seat.
It can be understood that, through the above structural arrangement, the position arrangement of the connecting clamp on the mounting seat is realized, so that the stability of the puller in connection with the mounting assembly through the connecting clamp is improved.
In one embodiment, the ejector screw is provided with a screwing head, the screwing head extends out of the mounting base in a direction away from the mounting assembly, and the screwing head can drive the ejector screw to rotate relative to the mounting base.
It can be understood that the arrangement of the structure is convenient for the rotary driving of the ejection screw rod, and further the ejection operation of the mandrel is convenient when the puller works.
Drawings
Fig. 1 is a schematic structural diagram of a mandrel ejection mechanism of a gradient coil according to an embodiment of the present disclosure during operation.
100, a mandrel ejection mechanism; 10. mounting the component; 11. a first limit piece; 111. a first flange; 12. a second limiting member; 121. a second flange; 1211. a second flange hole; 13. a connecting member; 131. a screw; 132. a nut; 20. pulling a horse; 21. pushing the screw rod; 211. screwing the head; 22. a mounting seat; 23. connecting a chuck; 24. a connecting plate; 201. a gradient coil; 202. and (3) a mandrel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model discloses a mandrel ejection mechanism 100 of a gradient coil, which is used for ejecting a mandrel 202 from a gradient coil 201.
Referring to fig. 1, a mandrel ejection mechanism 100 according to an embodiment of the present invention includes a mounting assembly 10 and a puller 20.
In the present embodiment, the mounting assembly 10 of the present embodiment is capable of acting on the gradient coil 201 and axially limiting with respect to the gradient coil 201; the puller 20 is connected to the mounting assembly 10, and the puller 20 can push the mandrel 202 in the axial direction of the gradient coil 201 to disengage the mandrel 202 from the gradient coil 201.
It can be understood that, when the mandrel ejection mechanism 100 of the present embodiment works, the mandrel 202 can be axially ejected relative to the gradient coil 201 by using the structural characteristics of the puller 20, so as to eject the mandrel 202 from the gradient coil 201; meanwhile, the mandrel ejection mechanism is simple in structure, low in production cost and simple and convenient to operate, and further meets the use requirements of enterprises.
The mounting assembly 10 of the present embodiment includes a first limiting member 11, a second limiting member 12, and a connecting member 13, the first limiting member 11 abuts against an axial end portion of the gradient coil 201, the puller 20 is connected to the second limiting member 12, and is configured to be disposed at an axial other end portion of the gradient coil 201 and abut against the mandrel 202, the second limiting member 12 is connected to the first limiting member 11 through the connecting member 13, so as to specifically implement the structural configuration of the mounting assembly 10, and the mounting assembly 10 implements axial limiting between the mounting assembly 10 and the gradient coil 201 through abutting between the first limiting member 11 and the gradient coil 201, so as to facilitate axial limiting of the gradient coil 201 when the mounting assembly 10 acts on the gradient coil 201.
The first limiting member 11 of the present embodiment includes a first flange 111, the first flange 111 is provided with a first flange hole (not shown), and an aperture of the first flange hole is larger than an outer diameter of the mandrel 202 and smaller than an outer diameter of the gradient coil 201, so as to implement the structural arrangement of the first limiting member 11, so that when the puller 20 pushes the mandrel 202, the mandrel 202 can be separated from the gradient coil 201 through the first flange hole of the first flange 111, and the purpose of pushing the mandrel 202 out of the gradient coil 201 is achieved; meanwhile, the first limiting member 11 includes the first flange 111, so that the first limiting member 11 can be made of local materials, thereby reducing the production cost of the first limiting member 11.
Secondly, the second limiting member 12 of the present embodiment includes a second flange 121, a second flange hole 1211 is formed on the second flange 121, and an aperture of the second flange hole 1211 is larger than an outer diameter of the gradient coil 201, so as to implement the structural configuration of the second limiting member 12, so that when the mounting assembly 10 acts on the gradient coil 201, the second limiting member 12 can be sleeved on the gradient coil 201, so as to facilitate the assembly of the second limiting member 12 on the gradient coil 201; meanwhile, the second limiting member 12 includes a second flange 121, so that the second limiting member 12 can be made of local materials, thereby reducing the production cost of the second limiting member 12. It should be noted that the second limiting member 12 is not limited to the illustration, and it is obvious to those skilled in the art that the second limiting member 12 may be disposed separately from the gradient coil 201, specifically, disposed outside one end of the gradient coil 201 in the axial direction, and will not be described herein.
The connecting member 13 of the present embodiment includes a screw 131, the screw 131 is disposed through the first limiting member 11 and the second limiting member 12, wherein one end of the screw 131 abuts against the first limiting member 11, and the other end of the screw extends out of the second limiting member 12, and is limited by a nut 132, so as to implement the structural configuration of the connecting member 13, so as to connect and fix the first limiting member 11 and the second limiting member 12. It should be understood that the installation manner of the screw 131 on the first limiting member 11 and the second limiting member 12 is not limited to that shown in the drawings, and it is obvious to those skilled in the art that one end of the screw 131 abuts against the second limiting member 12, and then the nut 132 is used to limit the position of the screw 131 extending out of the first limiting member 11.
It can be understood that, through the above structural arrangement, the structural arrangement of the connecting member is specifically realized, so that the first limiting member and the second limiting member are connected and fixed; meanwhile, the connecting member 13 includes the screw 131, so that the connecting member 13 can be made of local materials, thereby having an effect of reducing the production cost.
In this embodiment, the number of the screws 131 in this embodiment is multiple, and the multiple screws 131 are distributed on the first limiting member 11 and the second limiting member 12 at intervals. The number of the screws 131 is specifically set, and the stability of connection between the first limiting member 11 and the second limiting member 12 connected by the screws 131 is improved.
In the present embodiment, the puller 20 of the present embodiment includes an ejector screw 21, a mounting seat 22 and a plurality of connecting chucks 23, the ejector screw 21 is screwed to the mounting seat 22, wherein one end of the ejector screw 21 extends out of the mounting seat 22 toward the mounting assembly 10 for abutting against the mandrel 202; a plurality of connector jaws 23 are rotatably mounted on the mounting block 22, wherein an end of each connector jaw 23 remote from the mounting block 22 is capable of being connected to the mounting assembly 10, thereby embodying the structural arrangement of the puller 20.
It should be noted that, in the connection between the connecting chuck 23 on the puller 20 and the second limiting member 12 on the mounting assembly 10 of the present embodiment, the connecting chuck 23 may be used to hook the second limiting member 12 and circumferentially limit the position relative to the second limiting member 12, or the connecting chuck 23 and the second limiting member 12 may be connected as a whole, which will not be described herein.
The puller 20 of the embodiment further includes a plurality of connecting plates 24, and the connecting clamp 23 is rotatably mounted on the mounting seat 22 through the connecting plates 24, so as to implement the rotating connection between the connecting clamp 23 and the mounting seat 22, so as to facilitate the assembling connection between the connecting clamp 23 and the mounting seat 22.
The plurality of connecting chucks 23 of the puller 20 of the present embodiment are uniformly distributed around the mounting seat 22, so as to specifically realize the position arrangement of the connecting chucks 23 on the mounting seat 22, thereby improving the stability of the puller 20 when being connected with the mounting assembly 10 through the connecting chucks 23. Specifically, the number of the coupling collets 23 on the puller 20 of the present embodiment is three. It should be noted that the connection manner of the connection collets 23 on the mounting seat 22 is not limited to the illustrated connection manner, and for those skilled in the art, the number of the connection collets 23 may be two, four, or even more, and the included angles between two adjacent connection collets 23 are not necessarily equal.
Further, in the extractor 20 of the present embodiment, the ejector screw 21 is provided with a screw head 211, the screw head 211 extends out of the mounting seat 22 in a direction away from the mounting assembly 10, and the screw head 211 can drive the ejector screw 21 to perform a rotational motion relative to the mounting seat 22, so as to facilitate the rotational driving of the ejector screw 21, and further facilitate the ejection operation of the extractor 20 on the mandrel 202.
In summary, the mandrel ejection mechanism of the gradient coil of the present embodiment utilizes the structural cooperation of the existing conventional puller 20, the first flange 111, the second flange 121, and the screw 131 to realize that the mandrel ejection mechanism ejects the mandrel 202 from the gradient coil 201 during operation, and has the effects of simplifying the structure, facilitating the operation, and reducing the production cost.
The features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above embodiments are not described, but should be construed as being within the scope of the present specification as long as there is no contradiction between the combinations of the features.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. A mandrel ejection mechanism for a gradient coil for ejecting a mandrel (202) from a gradient coil (201);
the mandrel ejection mechanism (100) is characterized by comprising a mounting assembly (10) and a puller (20), wherein the mounting assembly (10) can act on the gradient coil (201) and is axially limited relative to the gradient coil (201); the puller (20) is connected to the mounting assembly (10), and the puller (20) can push the mandrel (202) along the axial direction of the gradient coil (201) to separate the mandrel (202) from the gradient coil (201).
2. The mandrel ejection mechanism for a gradient coil according to claim 1, wherein the mounting assembly (10) comprises a first retaining member (11), a second retaining member (12), and a connecting member (13), the first retaining member (11) is configured to abut against an axial end of the gradient coil (201); the puller (20) is connected with the second limiting part (12) and used for being arranged at the other axial end part of the gradient coil (201) and abutting against the mandrel (202), and the second limiting part (12) is connected with the first limiting part (11) through the connecting piece (13).
3. The mandrel ejection mechanism for a gradient coil according to claim 2, wherein the first limiting member (11) includes a first flange (111), and a first flange hole is formed in the first flange (111), and a diameter of the first flange hole is larger than an outer diameter of the mandrel (202) and smaller than an outer diameter of the gradient coil (201).
4. The mandrel ejection mechanism for a gradient coil according to claim 2, wherein the second limiting member (12) includes a second flange (121), a second flange hole (1211) is formed in the second flange (121), and an aperture of the second flange hole (1211) is larger than an outer diameter of the gradient coil (201).
5. The gradient coil mandrel ejection mechanism according to claim 2, wherein the connecting member (13) includes a threaded rod (131), the threaded rod (131) is disposed through the first retaining member (11) and the second retaining member (12), one end of the threaded rod (131) abuts against the first retaining member, and the other end of the threaded rod extends out of the second retaining member (12) and is retained by a nut (132).
6. The gradient coil mandrel ejection mechanism according to claim 5, wherein the number of the threaded rods (131) is multiple, and the multiple threaded rods (131) are distributed on the first limiting member (11) and the second limiting member (12) at intervals.
7. The gradient coil mandrel ejection mechanism according to claim 1, wherein the puller (20) comprises an ejector lead screw (21), a mounting seat (22) and a plurality of connecting chucks (23), the ejector lead screw (21) is connected to the mounting seat (22) in a threaded manner, one end of the ejector lead screw (21) extends out of the mounting seat (22) towards the mounting assembly (10) and is used for abutting against the mandrel (202); a plurality of said connector clips (23) are rotatably mounted to said mounting block (22), wherein an end of each of said connector clips (23) remote from said mounting block (22) is connectable to said mounting assembly (10).
8. The gradient coil mandrel ejection mechanism of claim 7, wherein the puller (20) further comprises a connecting plate (24), and the connecting collet (23) is rotatably mounted on the mounting seat (22) through the connecting plate (24).
9. The gradient coil mandrel ejection mechanism of claim 7, wherein a plurality of the connection collets (23) are uniformly arranged around the mounting base (22).
10. The gradient coil mandrel ejection mechanism of claim 7, wherein a screwing head (211) is disposed on the ejector lead screw (21), the screwing head (211) extends out of the mounting seat (22) away from the mounting assembly (10), and the screwing head (211) can drive the ejector lead screw (21) to rotate relative to the mounting seat (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122843260.3U CN216285677U (en) | 2021-11-18 | 2021-11-18 | Mandrel ejection mechanism of gradient coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122843260.3U CN216285677U (en) | 2021-11-18 | 2021-11-18 | Mandrel ejection mechanism of gradient coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216285677U true CN216285677U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122843260.3U Active CN216285677U (en) | 2021-11-18 | 2021-11-18 | Mandrel ejection mechanism of gradient coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216285677U (en) |
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2021
- 2021-11-18 CN CN202122843260.3U patent/CN216285677U/en active Active
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