Patent ID: 12205764

KEY TO LABELS

100suspension apparatus10support tray11through-hole12annular part15mounting part151threaded hole20suspension assembly30tensioning member31tensioning bolt311central hole33abutment member331first arc-shaped end face332blind hole35lock nut40pulling member41first pulling part42second pulling part43linear part50suspension member51second arc-shaped end face52engagement slot60end washer200vacuum container201accommodating cavity300cryogenic apparatus301connection surface400bracketα first planeβ second planeδ third planeθ plane of symmetryγ axis of connection surface

DETAILED DESCRIPTION

To enable clearer understanding of the technical features, objectives and effects of the disclosure, particular embodiments of the present disclosure are now explained with reference to the accompanying drawings, in which identical labels indicate structurally identical components or components with similar structures but identical functions.

As used herein, “schematic” means “serving as an instance, example or illustration”. No drawing or embodiment described herein as “schematic” should be interpreted as a more preferred or more advantageous technical solution.

In this text, “first” and “second”, etc. do not indicate order or degree of importance, etc., merely being used to indicate a distinction between parts, to facilitate document descriptions.

To make the drawings appear uncluttered, only those parts relevant to the present disclosure are shown schematically in the drawings; they do not represent the actual structure thereof as a product.

FIG.1is a structural schematic diagram of a schematic embodiment of a suspension apparatus for a superconducting magnet. As shown inFIG.1, the suspension apparatus100for a superconducting magnet comprises a support tray10and two suspension assemblies20.FIG.2is a structural schematic diagram of the support tray of the suspension apparatus shown inFIG.1. As shown inFIGS.1and2, the support tray10takes the form of a joined-ring body composed of two ring shapes. The support tray10comprises two annular parts12corresponding to the two ring shapes, with a mounting part15being disposed on each annular part12. In this schematic embodiment, the two annular parts12are arranged in a mirror-image fashion relative to a plane of symmetry θ, the mirror-image arrangement being more favourable for the balancing of forces borne, but there is no restriction to this. A through-hole11is provided at the center of the ring shape of each annular part12. Each suspension assembly20passes through one annular part12via one through-hole11; one end thereof, passing out of the through-hole11, is connected to one mounting part15, another end being used for connecting a cryogenic apparatus of a superconducting magnet.

In this schematic embodiment, the support tray10is provided with two annular parts12and two mounting parts15, and the suspension apparatus is provided with two suspension assemblies20. However, there is no restriction to this; in other schematic embodiments, only one annular part12may be provided, i.e. the support tray10only has one through-hole11, and two or more suspension assemblies20may pass through this one through-hole11at the same time. In other schematic embodiments, the quantities of mounting part(s)15and suspension assembly(assemblies)20may be adjusted as required, and for example may be greater than two.

In this schematic embodiment, the support tray10takes the form of a joined-ring body, but is not restricted to this; in other schematic embodiments, the shape thereof may be adjusted as required.

In this schematic embodiment, a threaded hole151runs through each mounting part15. Each suspension assembly20is connected to the mounting part15via one threaded hole151. An axis of the threaded hole151is arranged at a slant relative to the plane of symmetry θ; the angle of slant thereof may be adjusted as required. This structure is convenient to install and adjust. However, there is no restriction to this; in other schematic embodiments, the suspension assembly20may be connected to the mounting part15in a different way.

In this schematic embodiment, each suspension assembly20comprises a tensioning member30, a pulling member40and a suspension member50. The tensioning member30is fixed to the mounting part15via one threaded hole151, and a fixing position thereof relative to the mounting part15can be adjusted in a direction parallel to the axis of the threaded hole151. The pulling member40has a first pulling part41and a second pulling part42. The pulling member40passes through the annular part12via one through-hole11, with the first pulling part41and the second pulling part42being located at two sides of the through-hole11respectively. The first pulling part41is connected to the tensioning member30, and configured to apply to the tensioning member30a pulling force in a direction parallel to the axis of the threaded hole151. The second pulling part42is connected to the suspension member50, and configured to apply a pulling force to the suspension member50. The pulling forces applied by the pulling member40to the tensioning member30and the suspension member50are in opposite directions, to facilitate the balancing of forces. This structure is convenient to install and adjust. However, there is no restriction to this.

Referring toFIG.7, when the suspension apparatus100is in use, the support tray10is connected in a fixed manner to a vacuum container200, and the suspension members50of the two suspension assemblies20are connected in a fixed manner to a cryogenic apparatus300. By adjusting the fixing position of the tensioning member30on the support tray10, the degree of tensioning of the pulling member40can be adjusted, in order to suspend the cryogenic apparatus300. Each suspension apparatus100may provide two suspending forces for the cryogenic apparatus300via one pair of suspension assemblies20. Thus, the function of two existing suspension apparatuses is realized by one suspension apparatus100, and installation can thereby be facilitated.

In a schematic embodiment, the threaded hole151is disposed in a hole wall of the through-hole11, and the axis of the threaded hole151can pass through the through-hole11. Space can thereby be saved.

FIG.3is a schematic exploded view of the tensioning member of the suspension apparatus shown inFIG.1. As shown inFIG.3, in this schematic embodiment, each tensioning member30comprises a tensioning bolt31and an abutment member33. The tensioning bolt31is connected by screw-thread to one mounting part15via the threaded hole151. One end of the tensioning bolt31is rotatably connected to the abutment member33, and a rotation axis overlaps with an axis of the tensioning bolt31. The first pulling part41is connected to the abutment member33. Thus, the fixing position of the tensioning member30relative to the mounting part15can be adjusted by turning the tensioning bolt31, without affecting the angle of the abutment member33. This structure is simple, and is convenient to machine and operate.

In a schematic embodiment, each tensioning member30further comprises a lock nut35. The lock nut35is connected by screw-thread to the tensioning bolt31, and can abut the mounting part15. Thus, once the position of the tensioning bolt31has been chosen, the position of the tensioning bolt31relative to the mounting part15can be locked by means of the lock nut35, preventing loosening during use.

In this schematic embodiment, the pulling member40is a rigid pull ring. The first pulling part41and the second pulling part42are both arc-shaped. The pulling member40further comprises two linear parts43, which connect the first pulling part41and the second pulling part42to enclose a ring in the shape of an athletic track. The abutment member33has a first arc-shaped end face331corresponding to the shape of the first pulling part41. The first pulling part41abuts the first arc-shaped end face331, in order to apply a pulling force to the abutment member33. The suspension member50has a second arc-shaped end face51corresponding to the shape of the second pulling part42. The second pulling part42abuts the second arc-shaped end face51, in order to apply a pulling force to the suspension member50. Being acted upon by forces through contact with the arc-shaped end faces, the arc-shaped first pulling part41and second pulling part42can adapt to slight adjustments to a pulling force direction and reduce tension.

As shown inFIG.3, in a schematic embodiment, the abutment member33has a blind hole332. One end of the tensioning bolt31is rotatably inserted in the blind hole332. This structure is simple, and is convenient to machine.

FIG.4is a structural schematic diagram of another schematic embodiment of a suspension apparatus for a superconducting magnet. The identical features shared by the suspension apparatus of this schematic embodiment and the suspension apparatus shown inFIG.1are not repeated here; the structures of the suspension apparatus of this schematic embodiment which differ from the suspension apparatus shown inFIG.1are described below.

In this schematic embodiment, the pulling member40is a pull rod. The first pulling part41and second pulling part42are located at two ends of the pull rod respectively. As shown inFIG.5, the tensioning bolt31has a central hole311arranged to run through along the axis of the tensioning bolt. The abutment member33is disposed at one end of the central hole311and forms a spherical-surface sliding fit with the tensioning bolt31, in order to adapt to slight adjustments to a pulling force direction. The pulling member40passes through the tensioning bolt31via the central hole311, and the first pulling part41is connected to the abutment member33.

As shown inFIG.6, in this schematic embodiment, the suspension member50has an engagement slot52. The pulling member40passes through the suspension member50along the engagement slot52. The suspension assembly20further comprises an end washer60, which is connected to the second pulling part42and forms a spherical-surface sliding fit with the suspension member50, in order to adapt to slight adjustments to a pulling force direction. The pulling member40can move out of the engagement slot52in a direction perpendicular to the axis of the threaded hole151; installation can thereby be facilitated.

In a schematic embodiment, the support tray10is integrally formed, so the structure thereof is more stable.

FIG.7is a structural schematic diagram intended to illustrate a schematic embodiment of a superconducting magnet.FIG.8is a structural schematic diagram, shown along an axis γ of a connection surface, intended to illustrate the superconducting magnet shown inFIG.7. As shown inFIGS.7and8, the superconducting magnet comprises a vacuum container200, a cryogenic apparatus300and a suspension apparatus100as shown inFIG.1. The vacuum container200has an accommodating cavity201. The cryogenic apparatus300is disposed in the accommodating cavity201. The support tray10of the suspension apparatus100is connected in a fixed manner to an outer surface of the vacuum container200. Each suspension assembly20passes through the vacuum container200and the suspension member50thereof is connected in a fixed manner to the cryogenic apparatus300. By adjusting the fixing position of the tensioning member30on the support tray10, the degree of tensioning of the pulling member40can be adjusted, in order to suspend the cryogenic apparatus300. One suspension apparatus100of the superconducting magnet may provide two suspending forces for the cryogenic apparatus300via one pair of suspension assemblies20. Thus, the function of two existing suspension apparatuses is realized by one suspension apparatus100, and installation can thereby be facilitated.

In other schematic embodiments, the suspension apparatus100could also be the suspension apparatus100shown inFIG.4.

In a schematic embodiment, the superconducting magnet further comprises a bracket400. The bracket400is connected in a fixed manner to the outer surface of the vacuum container200and to the support tray10, and is arranged around the support tray10. The connection of the support tray10can thereby be made more stable.

In a schematic embodiment, the cryogenic apparatus300has a connection surface301in the form of an outer cylindrical surface. The two suspension assemblies20are arranged in a mirror-image fashion with respect to a first plane α perpendicular to the axis γ of the connection surface; the plane of symmetry θ overlaps with the first plane α. Thus, the resultant force of the two suspending forces applied to the cryogenic apparatus300by each suspension apparatus100is perpendicular to the axial direction of the connection surface301, in order to facilitate the balancing of suspending forces.

As shown inFIG.8, in a schematic embodiment, the superconducting magnet is provided with four suspension apparatuses100. Two of the suspension apparatuses100form a first suspension apparatus set, and the other two suspension apparatuses100form a second suspension apparatus set. The first suspension apparatus set and second suspension apparatus set are arranged in a mirror-image fashion relative to a second plane β in which the axis γ of the connection surface lies. The two suspension apparatuses100of the first suspension apparatus set are arranged in a mirror-image fashion relative to a third plane δ in which the axis γ of the connection surface lies. The second plane β is perpendicular to the third plane δ. Thus, the four suspension apparatuses100can achieve the balancing of suspending forces more easily.

The present disclosure further provides a magnetic resonance imaging device, comprising the superconducting magnet described above. One suspension apparatus100of the superconducting magnet may provide two suspending forces for the cryogenic apparatus300via one pair of suspension assemblies20. Thus, the function of two existing suspension apparatuses is realized by one suspension apparatus100, and installation can thereby be facilitated.

It should be understood that although the description herein is based on various embodiments, it is by no means the case that each embodiment contains just one independent technical solution. Such a method of presentation is adopted herein purely for the sake of clarity. Those skilled in the art should consider the description in its entirety. The technical solutions in the various embodiments could also be suitably combined to form other embodiments capable of being understood by those skilled in the art.

The series of detailed explanations set out above are merely particular explanations of feasible embodiments of the present disclosure, which are not intended to limit the scope of protection thereof. All equivalent embodiments or changes made without departing from the artistic spirit of the present disclosure, such as combinations, divisions or repetitions of features, shall be included in the scope of protection of the present disclosure.