CN114947809A - Old person's inspection bed suitable for portable magnetic resonance imaging device - Google Patents

Abstract

The invention relates to the technical field of nuclear magnetic resonance examination, and discloses an old people examination bed suitable for a movable magnetic resonance imaging device, which comprises an examination bed, wherein a combined wheelchair is arranged above the examination bed, a groove is formed in the outer surface of the examination bed, the combined wheelchair comprises a backrest, a seat plate and a baffle plate, the backrest is connected with the seat plate, the baffle plate is arranged on one side of the seat plate, a bolt is arranged in the backrest, the bolt is arranged in the baffle plate, the combined wheelchair further comprises a third rotating rod, a supporting leg, a non-magnetic elastic sheet and a clamping block, a fixing hole is formed in the outer surface of the seat plate, the fixing hole is matched with the clamping block, the backrest, the seat plate, the baffle plate, the supporting leg, the non-magnetic elastic sheet and the clamping block are arranged, the supporting leg is turned over from the position shown in figure 2 to the lower right direction until the clamping block is clamped into the fixing hole under the action of the non-magnetic elastic sheet, at the moment, the combined wheelchair is assembled, so that the patient can be pushed out from the examination room, and the use is convenient.

Description

An examination bed for the elderly suitable for a mobile magnetic resonance imaging device

technical field

The invention relates to the technical field of nuclear magnetic resonance examination, in particular to an examination bed for the elderly suitable for a mobile magnetic resonance imaging device.

Background technique

Magnetic resonance imaging, also known as spin imaging, also known as magnetic resonance imaging, uses the principle of nuclear magnetic resonance to detect the emitted electromagnetic waves by applying a gradient magnetic field according to the different attenuation of the released energy in different structural environments inside the material. Knowing the position and type of nuclei that make up the object, it is possible to draw an image of the internal structure of the object. Using this technique to image the internal structure of the human body has resulted in a revolutionary medical diagnostic tool. The application of the rapidly changing gradient magnetic field has greatly accelerated the speed of MRI, made the application of this technology in clinical diagnosis and scientific research a reality, and greatly promoted the rapid development of medicine, neurophysiology and cognitive neuroscience.

Conventional magnetic resonance imaging systems are closed structures with magnetic fields generated by superconducting coils or permanent magnets. The biggest problem with this structure is that it makes the patient feel claustrophobic, and it is difficult to implement interventional therapy.

In order to change this state, there are a variety of open magnetic resonance imaging systems, especially the appearance of miniaturized mobile magnetic resonance imaging equipment, its magnet is no longer a closed structure, it is formed by the upper and lower magnetic pole faces to form a static magnetic field, The two magnetic pole faces are connected by the upper and lower yokes and the vertical yoke (vertical yoke) on one side to form a magnetic circuit. The magnet of this structure enables the patient to enter through the opening on one side and relieves the claustrophobic feeling of the patient. At the same time, the doctor can approach the patient from three sides, which provides convenience for interventional treatment.

Traditional large-scale nuclear magnetic resonance instruments are equipped with a matching bed, which is convenient for transporting patients for nuclear magnetic resonance testing, but miniaturized nuclear magnetic resonance equipment lacks an nuclear magnetic resonance examination bed for transporting patients, because miniaturized nuclear magnetic resonance instruments are not limited to use in fixed locations. Therefore, patients also need to have a matching examination bed. The bed needs to meet the functions of the patient's long-distance movement, getting up and down, and pushing to the designated testing point.

Therefore, an examination bed for the elderly suitable for a mobile magnetic resonance imaging device is proposed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an examination bed for the elderly suitable for a mobile magnetic resonance imaging device, so as to achieve the purpose of solving the above-mentioned problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: an examination bed for the elderly suitable for a mobile magnetic resonance imaging device, including an examination couch, a combined wheelchair is arranged above the examination couch, and an outer part of the examination couch is provided. There are grooves on the surface. The combined wheelchair includes a backrest, a seat plate and a baffle plate. The backrest is connected to the seat plate. A baffle plate is arranged on one side of the seat plate. A latch is installed inside the baffle.

Preferably, the combined wheelchair further includes a rotating rod, a support leg, a non-magnetic elastic sheet, and a clamping block. The outer surface of the seat plate is provided with a fixing hole, and the fixing hole is adapted to the clamping block. A non-magnetic elastic sheet is installed on one outer wall of the block, so that the block can obtain the elastic force provided by the non-magnetic elastic sheet.

Preferably, one end of the non-magnetic elastic sheet is installed inside the support leg, and the support leg is installed inside the seat plate through the rotating rod 3, so that the support leg can obtain the support force.

Preferably, a support frame is installed on the bottom of the examination bed, a sliding rod 3 is installed on the bottom of the support frame, a rotating rod 2 is installed inside the sliding rod 3, and a movable rod is installed on the outer surface of the sliding rod 3 The outer surface of the second rotating rod is provided with a chute, and the sliding groove is communicated with the moving hole, so that the second rotating rod can obtain a supporting force.

Preferably, a sliding rod 2 is installed on the outside of the sliding rod 3, a sliding rod 4 is installed on the inside of the sliding rod 2, and the sliding rod 4 passes through the moving hole, and the sliding rod 2 is installed inside the Spring 1, one end of the spring 1 is installed on the bottom of the sliding rod 3, so that the spring 1 can obtain a supporting force.

Preferably, the bottom of the third sliding rod is connected with a connecting rope, the connecting rope is connected with the second sliding rod, one end of the connecting rope is arranged through the second sliding rod, and one end of the connecting rope is installed with a fixing seat, the One end of the second sliding rod is disposed through the fixed seat, and the second sliding rod is connected with the fixed seat, so that the fixed seat can limit the position of the second sliding rod.

Preferably, a rack is installed on the outside of the second sliding rod, and a sliding rod 1 is installed inside the rack, one end of the sliding rod 1 is arranged through the rack, and the other end of the sliding rod 1 is installed on a fixed The inside of the seat and the outside of the rack are provided with gears, the gears mesh with the racks, and the outer surface of the fixed seat is provided with through holes adapted to the racks, so that the racks can protrude from the fixed seat.

Preferably, a rotating rod 1 is installed at the bottom of the gear, a driving part is installed at one end of the rotating rod 1, a driving part box is installed outside the driving part, and the driving part box is installed inside the fixing seat, One end of the first rotating rod is disposed through the driving part box, so that the first rotating rod can obtain a supporting force.

Preferably, a supporting plate 1 is installed on the outside of the first rotating rod, one end of the rotating rod 1 is arranged through the supporting plate 1, and the outside of the supporting plate 1 is installed inside the fixed seat, so that the supporting plate 1 can be rotated Rod one provides support.

The invention provides an examination bed for the elderly suitable for a mobile magnetic resonance imaging device. Has the following beneficial effects:

(1) In the present invention, an inspection bed, a supporting frame, a fixed seat, a driving part, a rotating rod, a gear, a supporting plate, a rack, a sliding rod, and a sliding rod two are arranged, so that the supporting frame drives the inspection bed to move, It is convenient and simple to move the examination bed out of the examination area, which is convenient for the patient to go to bed and lie down.

(2) In the present invention, by setting the connecting rope, the third sliding rod, the second rotating rod, and the fourth sliding rod, under the action of the geriatric patient's own gravity, the sliding rod three moves downward, so that the sliding rod four moves out of the rotating rod two. , the inspection table can be kept at the position shown in FIG. 2 , and then the driving part is reversed, so that the inspection table enters the inspection area for inspection.

(3) In the present invention, by setting a backrest, a seat plate, a baffle plate, a latch, a rotating rod, a supporting leg, a non-magnetic elastic sheet, and a clamping block, the supporting leg is folded from the position shown in FIG. 2 to the lower right until the clamping The block is clamped into the fixing hole under the action of the non-magnetic shrapnel. At this time, the combined wheelchair is assembled, and the patient can be pushed out of the examination room, which is convenient to use.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is the front sectional view of the present invention;

Fig. 3 is the top view structure diagram of the seat plate of the present invention;

Fig. 4 is the top view structure diagram of the support frame of the present invention;

Fig. 5 is the front structural view of the sliding rod three of the present invention;

FIG. 6 is a side structural view of the sliding rod 1 of the present invention;

7 is an enlarged view of the present invention A;

Fig. 8 is a state diagram of the assembled wheelchair of the present invention.

In the picture: 1 examination bed, 2 supporting frame, 3 fixed seat, 4 driving part, 5 rotating rod 1, 6 gear, 7 supporting plate 1, 8 rack, 9 sliding rod 1, 10 sliding rod 2, 11 connecting rope, 12 sliding rod three, 13 rotating rod two, 14 backrest, 15 seat plate, 16 baffle plate, 17 latch, 18 rotating rod three, 19 supporting leg, 20 non-magnetic shrapnel, 21 block, 22 sliding rod four.

Detailed ways

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. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Examples of such embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

As shown in Figures 1-8, the present invention provides a technical solution: an examination bed for the elderly suitable for a mobile magnetic resonance imaging device, including an examination couch 1, a combined wheelchair is arranged above the examination couch 1, and the examination couch The outer surface of 1 is provided with grooves. The combined wheelchair includes a backrest 14, a seat plate 15, and a baffle plate 16. The backrest 14 and the seat plate 15 are movably connected by a movable rod 1 and a bearing 1, and the seat plate 15 and the baffle plate 16 are connected by the movable rod. 2. The two bearings are connected movably. The inner wall of the backrest 14 is slidably connected to the outer wall of the latch 17. One end of the latch 17 passes through the backrest 14 and the outer wall of the seat plate 15 in turn, and is finally clamped into the seat plate 15. The inner wall of the baffle 16 and the bolt 17 The outer wall is slidably connected, one end of the bolt 17 penetrates the baffle plate 16 in turn, and the outer wall of the seat plate 15 is finally clamped into the seat plate 15, so that the positions of the backrest 14 and the baffle plate 16 can be fixed. The combined wheelchair also includes a rotating rod 18 , the support leg 19, the non-magnetic elastic sheet 20, the clamping block 21, the outer surface of the seat plate 15 is provided with a fixing hole, the fixing hole is adapted to the clamping block 21, and one side of the outer wall of the clamping block 21 is fixed with one end of the non-magnetic elastic sheet 20 Connection, one end of the non-magnetic elastic sheet 20 is fixedly installed on the inner wall of the supporting leg 19, the supporting leg 19 is movably installed on the inner wall of the seat plate 15 through the rotating rod 3 18 and the bearing 3, the baffle 16 is away from the side of the seat plate 15 and A moving wheel is installed on the side of the support leg 19 away from the third rotating rod 18. By setting the backrest 14, the seat plate 15, the baffle plate 16, the latch 17, the rotating rod three 18, the supporting leg 19, the non-magnetic elastic piece 20, the block 21 , when the patient is an elderly paralyzed patient, place the patient on the examination couch 1 through a combined wheelchair adapted to the examination couch 1, pull out the latch 17, lay the backrest 14 and the baffle plate 16 flat, and then Push the clamping block 21 out of the fixing hole with your fingers, and when the clamping block 21 is completely moved out of the fixing hole, fold the support leg 19 to the position shown in FIG. Examine the patient.

After the inspection is completed, remove the combined wheelchair from the examination bed 1, fold the baffle 16 from the position shown in FIG. 2 to the lower right, and fold the backrest 14 from the position shown in FIG. After the proper position, insert the pin 17 into the seat plate 15 again to fix it, and fold the support leg 19 from the position shown in FIG. It is snapped into the fixing hole, and the combined wheelchair is assembled at this time, and the patient can be pushed out of the examination room, which is convenient to use;

The bottom of the examination bed 1 is fixedly connected with the top of the support frame 2, the bottom of the support frame 2 is fixedly connected with the top of the sliding rod 3 12, the inner wall of the sliding rod 3 12 and the outer wall of the rotating rod 2 13 are movably connected through the bearing 4, and the sliding rod The outer surface of the third 12 is provided with a moving hole, and the outer surface of the second rotating rod 13 is provided with a chute. As shown in FIG. 5 , the chute is communicated with the moving hole. , the inner wall of the sliding rod two 10 and the outer wall of the sliding rod four 22 are movably connected through the bearing five, the sliding rod four 22 passes through the moving hole, the inner wall of the sliding rod two 10 is fixedly connected with one end of the spring one, and one end of the spring one is fixed It is installed at the bottom of the sliding rod 3 12, the bottom of the sliding rod 12 is fixedly connected with one end of the connecting rope 11, the outer wall of the connecting rope 11 is slidably connected with the inner wall of the sliding rod 2 10, and one end of the connecting rope 11 penetrates the sliding rod The outer wall extends to the outside of the second sliding rod 10 , one end of the connecting rope 11 is fixedly connected to the bottom of the inner wall of the fixed seat 3 , one end of the sliding rod 2 10 penetrates the outer wall of the fixed seat 3 and extends to the inside of the fixed seat 3 . The outer wall is slidably connected to the inner wall of the fixed seat 3. By setting the connecting rope 11, the third sliding rod 12, the second rotating rod 13, and the fourth sliding rod 14, when the examination bed 1 moves to the left from the position shown in FIG. 2, the connecting rope The distance between the end of the 11 close to the driving part and the sliding rod 3 12 is shortened, so that the connecting rope 11 can no longer provide a downward pulling force to the sliding rod 12, so that the sliding rod 3 12 moves upward under the action of the spring 1, and the sliding rod The third 12 drives the support frame 2 to move up, thereby driving the examination bed 1 to move up, until the sliding rod 4 22 is caught in the chute opened on the outer surface of the rotating rod 2 13, at this time, the examination bed 1 can be rotated by hand, so that the examination bed 1 rests on the The left side is turned down with the rotating rod 2 13 as the axis, which is convenient for the elderly patient who is inconvenient to climb up to the examination bed 1. side lift.

It should be noted that the driving part 4 may be a non-magnetic motor or a manual crank 23 , as long as it can realize the rotation of the rotating rod 1 5 . If a manual crank handle 23 is used, a worm gear mechanism can be used inside the drive part 4 to realize disguised driving. This technology is the prior art, and is not described here.

When the chute and the moving hole move to the position shown in FIG. 2 , the sliding rod 3 12 is moved downward under the action of the elderly patient’s own gravity, so that the sliding rod 4 22 is moved out of the rotating rod 2 13 , so that the The examination table 1 is kept in the position shown in FIG. 2, and then the driving part 4 is reversed, so that the examination table 1 enters the inspection area for inspection, the outer wall of the second sliding rod 10 is fixedly connected with one end of the rack 8, and the inner wall of the rack 8 is connected to the sliding The outer wall of the rod one 9 is slidably connected, one end of the sliding rod one 9 extends through the outer wall of the rack 8 to the inside of the rack 8, the other end of the sliding rod one 9 is fixedly installed on the inner wall of the fixed seat 3, and the outside of the rack 8 A gear 6 is provided, the gear 6 meshes with the rack 8, the bottom of the gear 6 is fixedly connected with one end of the rotating rod 1 5, and one end of the rotating rod 1 5 is fixedly installed on the output end of the driving part 4 through the coupling, and the driving part The outer part of 4 is fixedly installed with the driving part box, the driving part box is fixedly installed on the inner wall of the fixed seat 3, one end of the rotating rod 1 is set through the driving part box, the outer wall of the rotating rod 1 5 and the inner wall of the supporting plate 1 7 pass through the bearing. Six active connections, one end of the rotating rod 1 5 is arranged through the supporting plate 1 7, and the outer wall of the supporting plate 1 7 is installed on the inner wall of the fixed seat 3. Rotating rod 1 5, gear 6, supporting plate 1 7, rack 8, sliding rod 1 9, sliding rod 2 10, the driving part 4 drives the rotating rod 1 to rotate, the rotating rod 1 5 drives the gear 6 to rotate, and the gear 6 drives The rack 8 moves, and the sliding rod 1 9 limits the position of the rack 8 and provides a supporting force to the rack 8. The rack 8 drives the sliding rod 2 10 to move, so that the sliding rod 2 10 drives the sliding rod 3 12 to move, thereby making the support The frame 2 drives the examination couch 1 to move, and moves the examination couch 1 out of the examination area, which is convenient for the patient to get on the bed and lie down.

In use, by setting the examination bed 1, the support frame 2, the fixed seat 3, the driving part 4, the rotating rod 1 5, the gear 6, the supporting plate 1 7, the rack 8, the sliding rod 1 9, and the sliding rod 2 10, The driving part 4 drives the rotating rod 1 to rotate, the rotating rod 1 5 drives the gear 6 to rotate, the gear 6 drives the rack 8 to move, and the sliding rod 1 9 limits the position of the rack 8 and provides support for the rack 8. The rack 8 Drive the second sliding rod 10 to move, so that the second sliding rod 10 drives the third sliding rod 12 to move, so that the support frame 2 drives the examination table 1 to move, and the examination table 1 is moved out of the examination area, which is convenient for the patient to go to bed and lie down, only need to open the driving part 4. The examination bed 1 can be moved out automatically, which is convenient and simple. By setting the connecting rope 11, the third sliding rod 12, the rotating rod 2 13, and the sliding rod 4 14, when the examination bed 1 moves to the left from the position shown in Figure 2 , the distance between the end of the connecting rope 11 close to the driving part and the sliding rod 3 12 is shortened, so that the connecting rope 11 can no longer provide a downward pulling force to the sliding rod 12, so that the sliding rod 12 moves upward under the action of the spring 1 , the sliding rod 3 12 drives the support frame 2 to move up, thereby driving the examination bed 1 to move up, until the sliding rod 4 22 is stuck in the chute opened on the outer surface of the rotating rod 2 13, at this time, the examination bed 1 can be rotated by hand to make the inspection The left side of the bed 1 is turned downward with the rotating rod 2 13 as the axis, which is convenient for the elderly patient who is inconvenient to climb up to the examination bed 1. One side of 1 is lifted, and when the chute and the moving hole move to the position shown in Figure 2, under the action of the elderly patient's own gravity, the sliding rod 3 12 moves downward, so that the sliding rod 4 22 moves from the rotating rod 2. 13, the inspection couch 1 can be kept in the position shown in FIG. 2, and then the driving part 4 is reversed, so that the inspection couch 1 enters the inspection area for inspection. , Rotating rod three 18, supporting leg 19, non-magnetic elastic piece 20, block 21, when the patient is an elderly paralyzed patient.

Put the patient on the examination couch 1 through the combined wheelchair matched with the examination couch 1, pull out the latch 17, lay the backrest 14 and the baffle 16 flat, and then use your fingers to remove the locking block 21 from the fixing hole Push out, when the block 21 is completely moved out of the fixing hole, fold the support leg 19 to the position shown in FIG. 2 , so that the combined wheelchair is placed on the examination bed 1, and the patient is examined. After the examination is completed , remove the combined wheelchair from the examination bed 1, fold the baffle 16 from the position shown in Figure 2 to the lower right, and fold the backrest 14 from the position shown in Figure 2 to the upper left until the appropriate position , insert the pin 17 into the seat plate 15 again, and then it can be fixed, by folding the support leg 19 from the position shown in FIG. When the combined wheelchair is assembled, the patient can be pushed out of the examination room, which is convenient to use.

It should be noted that the above structures are all made of non-magnetic materials, and non-magnetic materials belong to the prior art and are not a technical point protected by the document of this application, and therefore will not be described too much.

In conclusion, although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various modifications may be made to these embodiments without departing from the principles and spirit of the present invention. Variations, modifications, substitutions and alterations, the scope of the invention is defined by the appended claims and their equivalents.

Claims (9)

1. An examination bed for the elderly suitable for a mobile magnetic resonance imaging device, comprising an examination couch (1), characterized in that: a combined wheelchair is provided above the examination couch (1), and the examination couch (1) ) is provided with grooves on the outer surface, the combined wheelchair includes a backrest (14), a seat plate (15), a baffle plate (16), the backrest (14) is connected with the seat plate (15), and the seat plate One side of (15) is provided with a baffle plate (16), a plug (17) is installed inside the backrest (14), and a plug (17) is installed inside the baffle plate (16). 2. An examination bed for the elderly suitable for a mobile magnetic resonance imaging device according to claim 1, wherein the combined wheelchair further comprises a rotating rod (18), a support leg (19), a The magnetic elastic sheet (20), the clamping block (21), the outer surface of the seat plate (15) is provided with a fixing hole, the fixing hole is adapted to the clamping block (21), and one of the clamping blocks (21) A non-magnetic elastic sheet (20) is installed on the side outer wall. 3. An examination bed for the elderly suitable for a mobile magnetic resonance imaging device according to claim 2, characterized in that: one end of the non-magnetic elastic sheet (20) is installed inside the support leg (19), so The supporting legs (19) are installed inside the seat plate (15) through the rotating rod three (18). 4 . The examination bed for the elderly suitable for a mobile magnetic resonance imaging device according to claim 1 , wherein a support frame ( 2 ) is installed on the bottom of the examination bed ( 1 ), and the support frame (2) A sliding rod three (12) is installed at the bottom of the sliding rod three (12), a rotating rod two (13) is installed inside the sliding rod three (12), and a moving hole is opened on the outer surface of the sliding rod three (12). A chute is provided on the outer surface of the second rotating rod (13), and the chute is communicated with the moving hole. 5. An examination bed for the elderly suitable for a mobile magnetic resonance imaging device according to claim 4, characterized in that: a second sliding rod (10) is installed outside the third sliding rod (12), and the A sliding rod four (22) is installed inside the sliding rod two (10), the sliding rod four (22) passes through the moving hole, a spring one is installed inside the sliding rod two (10), and the spring One end is mounted on the bottom of sliding rod three (12). 6. An examination bed for the elderly suitable for a mobile magnetic resonance imaging device according to claim 5, characterized in that: a connecting rope (11) is connected to the bottom of the third sliding rod (12), and the connecting The rope (11) is connected with the second sliding rod (10), one end of the connecting rope (11) is arranged through the second sliding rod (10), and one end of the connecting rope (11) is installed with a fixing seat (3), the said One end of the second sliding rod (10) is disposed through the fixing seat (3), and the second sliding rod (10) is connected with the fixing seat (3). 7. An examination bed for the elderly suitable for a mobile magnetic resonance imaging device according to claim 6, characterized in that a rack (8) is installed on the outside of the second sliding rod (10), and the toothed A sliding rod (9) is installed inside the bar (8), one end of the sliding rod (9) is arranged through the rack (8), and the other end of the sliding rod (9) is mounted on the fixing seat (3). ), the outside of the rack (8) is provided with a gear (6), and the gear (6) meshes with the rack (8). 8. An examination bed for the elderly suitable for a mobile magnetic resonance imaging device according to claim 7, characterized in that: a rotating rod (5) is installed at the bottom of the gear (6), and the rotating rod One end of one (5) is installed with a driving part (4), a driving part box is installed on the outside of the driving part (4), and the driving part box is installed in the inside of the fixing seat (3), and the rotating rod is one (4). 5) One end is arranged through the drive part box. 9 . The examination bed for the elderly suitable for a mobile magnetic resonance imaging device according to claim 8 , wherein a supporting plate ( 7 ) is installed on the outside of the first rotating rod ( 5 ). One end of the rotating rod one (5) is arranged through the supporting plate one (7), and the outside of the supporting plate one (7) is installed inside the fixing seat (3).

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