Structure for adjusting lifting of guide wheels, magnetic resonance sickbed and magnetic resonance equipment

Abstract

The utility model relates to a structure for adjusting lifting of a guide wheel, a magnetic resonance sickbed and magnetic resonance equipment, the structure for adjusting lifting of the guide wheel comprises a base and a supporting block, the base is provided with two supporting walls which are distributed oppositely, and the tops of the two supporting walls are provided with first inclined planes which face the same direction; a lifting control mechanism is arranged between the two supporting walls and comprises a locking assembly, a moving assembly and an adjusting needle. The supporting block is locked and fixed between the two supporting walls through the locking assembly, and the supporting block moves up and down relative to the two supporting walls when the locking assembly is not locked; the top of the supporting block is provided with a second slope facing the same direction as the first slope, and the guide wheel is rotationally arranged on the second slope; an arc-shaped limiting groove is formed in the supporting block, and the moving assembly drives the adjusting needle to horizontally move in a reciprocating mode in the direction parallel to the arc-shaped limiting groove. The actual distance between the guide wheel and the bed body is convenient to adjust, the phenomena of blockage and instability of the bed body in movement are effectively eliminated, and the whole structure is easy to machine and convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of magnetic resonance technology, and more specifically, to a structure for adjusting the lifting and lowering of guide wheels, a magnetic resonance bed, and a magnetic resonance device. Background Technology

[0002] Magnetic resonance imaging (MRI) devices, employing magnetic resonance technology, have a wide range of applications in the medical field. MRI machines can be used to detect and diagnose various diseases, as well as to assess disease severity and treatment effectiveness. The examination bed is a crucial component of an MRI machine, typically supported and moved using a guide wheel structure. With continuous innovation and development in MRI equipment, the shape of the bed has become more diverse. Currently, existing guide wheel support structures still use a fixed support method, which is relatively simple. When supporting a V-shaped bed (with sides expanding upwards and outwards), the inclined surfaces on both sides of the bed must be tangent to the guide wheels. The guide wheels provide support and assist in the movement of the bed, enabling it to enter and exit the central cavity of the magnet. However, in existing guide wheel support structures, because the height of the guide wheels is not adjustable, when the manufacturing precision of the bed is low and assembly errors exist, it is difficult to ensure that the side of the bed is accurately positioned on the tangent plane above the guide wheels. This can easily lead to instability or jamming during movement, resulting in a poor user experience and reducing the lifespan of the bed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a structure for adjusting the lifting and lowering of guide wheels, a magnetic resonance bed, and a magnetic resonance device, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] On one hand, this utility model provides a structure for adjusting the lifting of a guide wheel, including a base and a support block for mounting the guide wheel; the base has two opposing support walls, the tops of which each have a first inclined surface facing the same direction; a lifting control mechanism is provided between the two support walls, the lifting control mechanism including a locking component, a moving component, and an adjusting pin; the support block is locked and fixed between the two support walls by the locking component, and if the locking component is not locked, the support block moves up and down relative to the two support walls; the top of the support block has a second inclined surface facing the same direction as the first inclined surface, and the guide wheel is rotatably mounted on the second inclined surface; the support block is also provided with an arc-shaped limiting groove, one end of the adjusting pin is inserted into the arc-shaped limiting groove, and the other end of the adjusting pin is mounted on the moving component, the moving component drives the adjusting pin to move horizontally back and forth in a direction parallel to the arc-shaped limiting groove; when the adjusting pin moves to the middle of the arc-shaped limiting groove, the support block moves upward; when the adjusting pin moves to one side of the arc-shaped limiting groove, the support block moves downward.

[0006] In some embodiments, the support block has a vertically protruding locking strip on each of its two sides opposite to the two support walls, and the two support walls each have a first clearance recess for the corresponding locking strip to be engaged.

[0007] In some embodiments, the locking assembly includes a first screw and a first nut block, the first screw passing through two first clearance recesses, the end of the first screw away from its screw head passing through the two first clearance recesses and threadedly connected to the first nut block; the bottom of the support block passes through the first screw.

[0008] In some embodiments, a locking block is provided on one side of the first nut block facing the corresponding first clearance recess. The locking block is vertically arranged and has a clearance through hole at its center. The clearance through hole communicates with the threaded hole of the first nut block to allow the first screw to pass through. When the first nut block and the first screw are threadedly engaged and the support block is locked, the locking block is inserted into the corresponding first clearance recess.

[0009] In some embodiments, the bottom of the support block is provided with a protrusion, which passes through the first screw; the lengths of the protrusion and the support block are both adapted to the distance between the two support walls.

[0010] In some embodiments, a baffle is provided at the top of each of the two supporting walls, and the two baffles extend outward at an angle in a direction away from each other; each of the two baffles is also provided with a second clearance recess, and the two second clearance recesses communicate with the two first clearance recesses.

[0011] In some embodiments, the movable component includes a second screw, a second nut block, and a retaining ring. The second screw passes through two support walls and is located diagonally below the first screw. The second nut block is disposed on the second screw and is fixedly connected to the end of the adjusting pin away from the arc-shaped limiting groove. The end of the second screw away from its screw head passes through the two support walls and is sleeved with the retaining ring. The retaining ring is fastened to the second screw by screws.

[0012] In some embodiments, a guide rod is provided between the two support walls, the guide rod being located obliquely below the second screw; the end of the second nut block away from the second screw is movably sleeved on the guide rod.

[0013] In some embodiments, the concave surface of the arc-shaped limiting groove faces upward.

[0014] On the other hand, this utility model also provides a magnetic resonance imaging (MRI) bed, including a structure for adjusting the lifting and lowering of guide wheels as described in any of the preceding claims.

[0015] On the other hand, this utility model also provides a magnetic resonance device, including the magnetic resonance bed as described above.

[0016] The beneficial effects of this utility model are as follows: Unlike the prior art, in the structure for adjusting the lifting of the guide wheel of this utility model, the support block can be locked and fixed between the two support walls by the locking component, which plays a stable supporting role; if the locking component is not locked, the support block can move up and down relative to the two support walls, which makes it easy to adjust the height of the support block by moving the component and adjusting the height of the guide wheel; it is helpful to use with the bed of magnetic resonance equipment, which can flexibly adjust the actual distance between the guide wheel and the bed, effectively eliminate the jamming and instability of the bed during movement, and the overall structure is easy to process, easy to install, and has high reliability. Attached Figure Description

[0017] Figure 1 This is a front side view of the structure for adjusting the lifting and lowering of the guide wheel in an embodiment of this utility model;

[0018] Figure 2 This is a rear side view of the structure for adjusting the lifting and lowering of the guide wheel in an embodiment of this utility model;

[0019] Figure 3 This is an exploded structural diagram of the structure for adjusting the lifting and lowering of the guide wheel in an embodiment of this utility model;

[0020] Figure 4 This is a side view of the magnetic resonance imaging (MRI) bed in an embodiment of this utility model;

[0021] Figure 5 This is an exploded structural diagram of the magnetic resonance imaging (MRI) bed in an embodiment of this utility model;

[0022] The following are the labels and numbers in the diagram: Base-1; Guide wheel-2; Support block-3; Support wall-11; Locking assembly-4; Moving assembly-5; Adjusting pin-6; Arc-shaped limiting groove-301; Locking strip-31; First clearance notch-110; First screw-41; First nut block-42; Locking block-421; Protrusion-32; Baffle-111; Second clearance notch-1110; Second screw-51; Second nut block-52; Fixing ring-53; Fastening through hole-530; Guide rod-7; Bed body-10; Bed body support plate-20; Pad plate-30; Base plate-40. Detailed Implementation

[0023] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Furthermore, the terms indicating orientation, such as "up," "down," "front," "back," "left," "right," "upper end," and "lower end," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. 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.

[0028] Example 1: This embodiment of the utility model provides a structure for adjusting the lifting and lowering of the guide wheel, such as... Figures 1 to 3 As shown, the structure for adjusting the lifting of the guide wheel includes a base 1 and a support block 3 for mounting the guide wheel 2; the base 1 has two opposing support walls 11, the tops of which each have a first inclined surface facing the same direction; a lifting control mechanism is provided between the two support walls 11, the lifting control mechanism including a locking assembly 4, a moving assembly 5, and an adjusting pin 6; the support block 3 is locked and fixed between the two support walls 11 by the locking assembly 4, and if the locking assembly 4 is not locked, the support block 3 moves up and down relative to the two support walls 11; the support block The top of the support block 3 has a second inclined surface facing the same direction as the first inclined surface, and the guide wheel 2 is rotatably mounted on the second inclined surface; the support block 3 is also provided with an arc-shaped limiting groove 301, one end of the adjusting pin 6 is inserted into the arc-shaped limiting groove 301, and the other end of the adjusting pin 6 is mounted on the moving component 5. The moving component 5 drives the adjusting pin 6 to move horizontally back and forth in a direction parallel to the arc-shaped limiting groove 301; when the adjusting pin 6 moves to the middle of the arc-shaped limiting groove 301, the support block 3 moves upward; when the adjusting pin 6 moves to one side of the arc-shaped limiting groove 301, the support block 3 moves downward.

[0029] In this embodiment, a vertically protruding retaining strip 31 is provided on each of the two sides of the support block 3 opposite to the two support walls 11. The cross-sectional shape of the retaining strip 31 is arc-shaped. Correspondingly, each of the two support walls 11 is provided with a first clearance recess 110 for the corresponding retaining strip 31 to be inserted into. The first clearance recess 110 is adapted to the retaining strip 31. The length of the support block 3 is adapted to the distance between the two support walls 11. When the support block 3 is located between the two support walls 11, the two sides of the support block 3 are close to the walls of the two support walls 11, and the two retaining strips 31 on the support block 3 are also placed in the two first clearance recesses 110. When the support block 3 moves up and down, the two first clearance recesses 110 can play a guiding and limiting role, so that the support block 3 can move stably along a predetermined up and down direction.

[0030] In this embodiment, the locking assembly 4 includes a first screw 41 and a first nut block 42. The first screw 41 and the first nut block 42 are connected by a threaded engagement to achieve the locking function. Specifically, the first screw 41 passes through two first clearance recesses 110, and the end of the first screw 41 away from its screw head passes through the two first clearance recesses 110 and is threadedly connected to the first nut block 42; the bottom of the support block 3 passes through the first screw 41. With the cooperation of the locking strip 31 and the first clearance recesses 110, locking the first screw 41 and the first nut block 42 can fix the support block 3 between the two support walls 11.

[0031] To further increase the stability of the first nut block 42 when locked, a locking block 421 is provided on the side of the first nut block 42 facing the corresponding first clearance recess 110. The locking block 421 is vertically arranged, and a clearance through hole is provided at the center of the locking block 421. The clearance through hole communicates with the threaded hole of the first nut block 42 so that the first screw 41 can pass through. When the first nut block 42 and the first screw 41 are threadedly engaged and locked to fix the support block 3, the locking block 421 is inserted into the corresponding first clearance recess 110, and the first nut block 42 can no longer be moved. When it is necessary to adjust the height of the support block 3, start from the end of the first screw 41 away from the first nut seat, and turn the first screw 41 out of the first nut seat a certain distance. Then the first screw 41 can move back and forth in the two first clearance recesses 110, and the locking block 421 on the first nut seat can be moved out of the corresponding first clearance recess 110.

[0032] In this embodiment, the bottom of the support block 3 is provided with a protrusion 32, which is integrally connected to the support block 3. The protrusion 32 has a corresponding channel for the first screw 41 to pass through, and the protrusion 32 passes through this channel onto the first screw 41. The length of the protrusion 32 is also adapted to the distance between the two support walls 11. For example, the length of the protrusion 32 is the same as the length of the support block 3. When the support block 3 is located between the two support walls 11, the protrusion 32 is also located between the two support walls 11. When the two sides of the support block 3 are close to the walls of the two support walls 11, the two sides of the protrusion 32 are also close to the walls of the two support walls 11.

[0033] In this embodiment, each of the two supporting walls 11 is provided with a baffle 111 at its top. The baffle 111 is integrally connected to the supporting wall 11, and the connection point has an arc-shaped transition. The two baffles 111 extend outward at an angle that is mutually distancing, and the angle of inclination of the two baffles 111 is consistent with the angle of inclination of the first inclined surface. Each of the two baffles 111 is also provided with a second clearance recess 1110, and the two second clearance recesses 1110 communicate with the two first clearance recesses 110 to provide suitable clearance space.

[0034] In this embodiment, the moving component 5 includes a second screw 51, a second nut block 52, and a fixing ring 53. The second screw 51 passes through two support walls 11 and is located diagonally below the first screw 41. The second nut block 52 is disposed on the second screw 51 and is fixedly connected to the end of the adjusting pin 6 away from the arc-shaped limiting groove 301. The end of the second screw 51 away from its screw head passes through the two support walls 11 and is sleeved with the fixing ring 53. The fixing ring 53 is fastened to the second screw 51 by screws. Specifically, the fixing ring 53 consists of two locking parts that can open and close relative to each other. Each locking part is provided with a fastening through hole 530 for screw insertion. When the screw is inserted into the fastening through hole 530, the two locking parts can be locked, thereby locking the second screw 51 through the fixing ring 53. The second screw 51 no longer moves, and the locked state of the second screw 51 is the same as the locked state of the first screw 41. When it is necessary to rotate the second screw 51, remove the screw to release the locking ring 53 from the second screw 51, allowing the second screw 51 to rotate on the two support walls 11. As the second screw 51 rotates, it drives the second nut block 52 to move, which in turn drives the adjusting pin 6 to move, thereby adjusting the height of the support block 3. In some embodiments, the second screw 51 can also be replaced by a lead screw.

[0035] The concave surface of the arc-shaped limiting groove 301 faces upward. The arc-shaped limiting groove 301 is set on the protrusion 32 and located above the channel. The protrusion 32 has a protrusion formed in the middle of the arc-shaped limiting groove 301 that is opposite to the concave surface of the arc-shaped limiting groove 301. By gradually moving the adjusting pin 6 to the position where it contacts the protrusion, the support block 3 gradually moves up to the highest point.

[0036] In this embodiment, a guide rod 7 is also provided between the two support walls 11. The guide rod 7 is fixedly installed and located diagonally below the second screw 51. Specifically, the second nut block 52 is triangular in shape, and one end of the second nut block 52 away from the adjusting pin 6 is movably sleeved on the guide rod 7, which guides and limits the movement of the second nut block 52, enabling the second nut block 52 to move stably in a predetermined direction.

[0037] Example 2: This embodiment of the present invention provides a magnetic resonance imaging (MRI) bed, which includes the adjustable guide wheel lifting structure provided in Example 1.

[0038] Specifically, such as Figure 4 and Figure 5As shown, the MRI bed also includes a bed body 10, a bed support plate 20, a pad plate 30, and a base plate 40. The bed support plate 20 has a cavity adapted to the bed body 10, and the bed body 10 is located within the cavity. There are two base plates 40, which are arranged in parallel and both are located below the bed support plate 20. There are four sets of structures for adjusting the lifting of the guide wheels. These four sets of structures are distributed in pairs on the two base plates 40, specifically fixing the base 1 to the base plate 40. The two opposite side walls of the cavity of the bed support plate 20 are provided with hollow grooves for the support block 3 to pass through. There are also two pad plates 30, which are correspondingly arranged on the two opposite side walls of the cavity of the bed support plate 20. The two pad plates 30 are provided with positioning through holes adapted to the support block 3. After the support block 3 passes through the hollow groove, it is placed in the positioning through hole, so that the guide wheel 2 on the support block 3 is exposed to contact the side of the bed body 10.

[0039] Example 3: This utility model embodiment provides a magnetic resonance imaging device, which includes the magnetic resonance imaging bed provided in Example 2.

[0040] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A structure for adjusting the lifting of a guide wheel, comprising a base and a support block for mounting the guide wheel; characterized in that: The base has two oppositely distributed support walls, the top of each of the two support walls has a first inclined surface with the same orientation; a lifting control mechanism is arranged between the two support walls, the lifting control mechanism comprises a locking assembly, a moving assembly and an adjusting needle; the support block is locked and fixed between the two support walls by the locking assembly, the support block moves up and down relative to the two support walls when the locking assembly is unlocked; the top of the support block has a second inclined surface with the same orientation as the first inclined surface, the guide wheel is rotatably arranged on the second inclined surface; the support block is further provided with an arc-shaped limiting groove, one end of the adjusting needle is inserted into the arc-shaped limiting groove, the other end of the adjusting needle is arranged on the moving assembly, the moving assembly drives the adjusting needle to move horizontally along a direction parallel to the arc-shaped limiting groove; when the adjusting needle moves to the middle of the arc-shaped limiting groove, the support block moves up; When the adjusting needle moves to one side of the arc-shaped limiting groove, the support block moves down.

2. The structure for adjusting the lift of the guide roller according to claim 1, wherein: The support block is respectively provided with a vertically outward protruding clamping strip on the opposite sides of the two support walls, and each of the two support walls is respectively provided with a first avoiding notch for the corresponding clamping strip.

3. The structure for adjusting the lift of the guide roller according to claim 2, wherein: The locking assembly comprises a first screw rod and a first nut block, the first screw rod is arranged in the two first avoiding notches, one end of the first screw rod away from the screw head penetrates through the two first avoiding notches and is threadedly connected with the first nut block; the bottom of the support block is arranged on the first screw rod.

4. The structure for adjusting the lift of the guide roller according to claim 3, wherein: One side of the first nut block facing the corresponding first avoiding notch is provided with a clamping block, the clamping block is vertically arranged, an avoiding through hole is arranged at the central position of the clamping block, the avoiding through hole is communicated with the threaded hole of the first nut block to allow the first screw rod to penetrate through; when the first nut block is threadedly matched with the first screw rod and locks the support block, the clamping block is inserted into the corresponding first avoiding notch.

5. The structure for adjusting the lift of the guide roller according to claim 3, wherein: The bottom of the support block is provided with a protruding block, the protruding block is arranged on the first screw rod; the length of the protruding block and the length of the support block are adapted to the distance between the two support walls.

6. A structure for adjusting the lifting of a guide roller according to any one of claims 2 to 5, characterized in that: The top of each of the two support walls is provided with a baffle, the two baffles extend outwardly in directions away from each other; each of the two baffles is further provided with a second avoiding notch, the two second avoiding notches are communicated with the two first avoiding notches.

7. The structure for adjusting the lift of the guide roller according to claim 3, wherein: The moving assembly comprises a second screw rod, a second nut block and a fixing ring, the second screw rod is arranged on the two support walls and is located obliquely below the first screw rod, the second nut block is arranged on the second screw rod and is fixedly connected with the end of the adjusting needle away from the arc-shaped limiting groove; one end of the second screw rod away from the screw head penetrates through the two support walls and is sleeved with the fixing ring, the fixing ring is fastened on the second screw rod by a screw.

8. The structure for adjusting the lift of the guide roller according to claim 7, wherein: A guide rod is further arranged between the two support walls, the guide rod is located obliquely below the second screw rod; one end of the second nut block away from the second screw rod is movably sleeved on the guide rod.

9. A magnetic resonance patient bed, characterized by: The structure for adjusting and lifting the guide wheel comprises the structure for adjusting and lifting the guide wheel according to any one of claims 1-8.

10. A magnetic resonance apparatus characterized by: The magnetic resonance patient bed comprises the structure for adjusting and lifting the guide wheel according to claim 9.

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