CN112587317B - Intracardiac branch of academic or vocational study patient nurses transfer device - Google Patents

Abstract

The invention relates to the technical field of medical equipment, and discloses a patient care transfer device in the Department of Cardiology, which includes a base plate, four corners of the bottom wall of the base plate are fixedly installed with supporting legs, and four sets of universal wheels are arranged on the bottom of the base plate. The top walls of the universal wheels are respectively fixedly connected with the bottom walls of the four sets of supporting legs, the top wall of the bottom plate is fixedly installed with a bed board, the left and right sides of the bottom plate are provided with handrails, and the bottoms of the two sets of handrails are all provided with three sets of handrails. A rectangular groove is provided on the bottom wall of the armrest group. In the present invention, the care and transfer device for patients in the Department of Cardiology pushes two groups of push rods to fit the bottom wall of the bed board and the top wall of the operating table, and places one side of the patient on the operating table, and the medical staff put the other side of the patient Lift the side, and then push the push rod to return the bed board to its original position, and the medical staff will slowly place the other side of the patient on the operating table, avoiding the secondary injury caused by the violent floating of the patient.

Description

A nursing transfer device for cardiology patients

technical field

The invention relates to the technical field of medical equipment, in particular to a nursing transfer device for cardiology patients.

Background technique

Medical equipment refers to instruments, equipment, utensils, materials or other items used alone or in combination for the human body, including the required software. Medical equipment is the most basic element of medical treatment, scientific research, teaching, institutions, and clinical disciplines, including professional medical equipment and household medical equipment

At present, the existing patient care transfer devices on the market need to transfer patients to the operating table or to the ward, especially for patients who need care after cardiology surgery, the vibration of the patient during the movement should be minimized to prevent postoperative wounds Cracked again due to vibration and shaking. To this end, we propose a cardiology patient care transfer device.

Contents of the invention

The present invention mainly solves the technical problems existing in the above-mentioned prior art, and provides a nursing transfer device for cardiology patients.

In order to achieve the above object, the present invention adopts the following technical scheme, a kind of cardiology patient care transfer device, including a base plate, the four corners of the bottom wall of the base plate are fixedly equipped with supporting legs, and the bottom of the base plate is provided with four sets of universal wheels, The top walls of the four sets of universal wheels are respectively fixedly connected with the bottom walls of the four sets of supporting legs, the top wall of the bottom plate is fixedly installed with a bed plate, the left and right sides of the bottom plate are provided with handrails, and the bottom of the two sets of handrails are equipped with three sets of handrails There are rectangular grooves on the bottom walls of the two sets of handrails, three sets of circular holes are opened on the left and right side walls of the corresponding positions of the rectangular grooves on the two sets of handrails, and the walls corresponding to the six sets of circular holes on the two sets of handrails are fixedly installed with the first Bearings, the first rotating rods are installed on the left and right sides of the top wall of the six groups of handrails. The wall is fixedly connected. There are chutes on the left and right sides of the bottom wall of the bottom plate. Three sets of hanging blocks are installed inside the two sets of chute. The top wall of the block is fixed with a T-shaped block, and the side walls of the T-shaped block are respectively attached to the walls of the corresponding positions of the three sets of T-shaped slots inside the two sets of chutes, and the three sets of handrails at the bottom of the two sets of handrails approach There are circular holes at the bottom of one side of the wall, and the second bearings are fixedly installed on the walls corresponding to the circular holes on the six sets of support rods, and the three sets of hanging blocks inside the two sets of chute are fixed on the side walls that are far away from each other. There are rotating rods, and the side walls of the rotating rods on the three sets of hanging blocks on the left and right sides of the bottom of the bottom plate are respectively fixedly connected with the walls at the corresponding positions of the upper holes of the second bearings on the three sets of handrails at the bottom of the two sets of handrails, and the front side walls of the bottom plate are fixed. A headboard is installed, and the front wall of the headboard is provided with a push groove, which corresponds to the front wall of the bed board. The front and rear walls of the armrest are provided with telescopic grooves. Both the top wall and the bottom wall of the corresponding position are provided with card slots, and the two sets of card slots communicate with the corresponding set of telescopic slots respectively. Push rods are arranged inside the two sets of telescopic slots, and the ends of the two sets of push rods are respectively The two sets of telescopic grooves extend to the outside of the bed board. The bottom wall of the bed board is provided with a circular hole, and the top of the side wall corresponding to the circular hole on the bed board is provided with a limit groove. The inside of the bed board is provided with a lifting bearing. The front end of the bottom wall at the corresponding position on the limit groove is attached to each other, the left and right sides of the lifting bearing are fixed with limit rods, and the ends of the side walls of the two sets of limit rods are fixed with limit bearings, and the two sets of limit The bottom end of the side wall of the bearing is respectively attached to the front and rear ends of the bottom wall at the corresponding position of the limit groove. There are threaded holes on the bottom wall of the bottom plate. The threaded holes on the bottom plate correspond to the circular holes on the bottom wall of the bed plate. There is a threaded rod, the top of the threaded rod extends to the inside of the bed board through the threaded hole on the bottom plate, the top of the side wall of the threaded rod is fixedly connected with the wall surface at the corresponding position on the upper hole of the lifting bearing, the bottom end of the side wall of the threaded rod is fixedly equipped with a circular table gear, and the bottom plate The rear side of the bottom wall of the support column is fixedly installed with a support column, and the bottom end of the rear side wall of the support column is provided with a circular through hole, and the circular through hole on the support column A third bearing is fixedly installed on the wall at the corresponding position.

As a preference, the rear side of the support column is provided with a rotary rod, and the front end of the rotary rod extends to the front side of the third bearing through the hole on the third bearing. The gears mesh with the circular platform gears on the threaded rods, and telescopic rods are arranged on the left and right side walls of the bed board.

As a preference, one end of the expansion rods of the two groups is fixedly installed with a rotating rod, and the rear ends of the left and right side walls of the bed board are provided with circular holes, and the walls at the corresponding positions of the circular holes on the left and right side walls of the bed board are all fixedly installed. There is a second bearing, and the side walls of the rotating rods on the two groups of telescopic rods are fixedly connected with the corresponding position walls of the holes on the second bearings on the left and right sides of the bed board respectively.

As a preference, the rear end of the bed board is provided with a backing board, the bottom end of the backing board is attached to the top wall of the rear push rod, the left and right side walls of the backing board are fixedly installed with blocks, and the two sets of telescopic rods Rectangular holes are opened on the rear side walls of the two groups of telescopic rods, and the rectangular holes on the two sets of telescopic rods run through the top and bottom walls of the corresponding group of telescopic rods. hole.

As a preference, the two groups of circular holes inside the rectangular holes on the two groups of telescopic rods are fixedly installed with the first bearings, and the wall surfaces of the corresponding positions of the two groups of first bearings inside the two groups of telescopic rods are fixedly installed with the first rotating shafts. Rod, two groups of first bearings inside the two groups of telescopic rods are fixedly connected to the bottoms of the left and right side walls of the two groups of building blocks respectively.

Beneficial effect

The invention provides a nursing transfer device for cardiology patients. Has the following beneficial effects:

(1) The care and transfer device for patients in the Department of Cardiology corresponds the top wall of the base plate to the top wall of the operating table, and pushes two sets of push rods to fit the bottom wall of the bed plate and the top wall of the operating table to each other. Place it on the operating table, the medical staff will lift the other side of the patient, and then push the push rod to return the bed board to its original position, and the medical staff will slowly place the other side of the patient on the operating table to avoid the patient being injured Violent floating causes secondary damage.

(2) In this cardiology patient care transfer device, when the two groups of armrests are pushed to the rear side, due to the limitation of the armrests, the armrests will rotate downwards. When the bottom wall of the armrests rotates to the bottom wall of the bottom plate , the armrest can be pushed to the inside of the chute, the armrest can prevent the patient from falling, and also avoid the situation that the armrest occupies a distance when the patient is moved to the operating table.

(3) In the cardiology patient care transfer device, the push rod is located inside the telescopic groove, and the top and bottom walls of the telescopic groove are provided with card slots. Through the telescopic groove, the push rod can move back and forth inside the bed board. The card slot and the push rod can move left and right inside the bed board, and the device can move the patient to the operating table when it is on the left or right side of the operating table.

(4) In this cardiology patient care transfer device, a limiting groove is provided inside the bed board, and the bottom wall of the lifting bearing fits in the middle of the bottom wall at the corresponding position on the limiting groove. The bottom ends of the side walls of the two sets of limiting bearings and the The left and right sides of the bottom wall at the corresponding position on the limit groove fit together, and the limit rod is prevented from rotating inside the bed board through the limit of the limit groove.

(5) In the cardiology patient care transfer device, the support plate is moved upwards, the telescopic rod is extended, and the telescopic rod is moved forward through the second bearing, the rotating rod, the first bearing, and the first rotating rod. Two groups of blocks 30 are built on the top walls of two groups of 5, and the board 29 becomes a table, which is convenient for patients to use.

Description of drawings

Fig. 1 is the front view of the nursing transfer device for cardiology patients of the present invention;

Fig. 2 is a schematic diagram of the position of the chute of the present invention;

Fig. 3 is a schematic diagram of the shape of the limiting groove of the present invention;

Fig. 4 is a schematic diagram of the positional relationship of the support columns of the present invention;

Fig. 5 is a schematic diagram of the position of the rotating rod on the telescopic rod of the present invention.

illustration:

1 base plate, 2 supporting legs, 3 universal wheels, 4 bed board, 5 armrest, 6 arm bar, 7 first bearing, 8 first rotating rod, 9 chute, 10 hanging block, 11T block, 12 second bearing, 13 rotating rod, 14 headboard, 15 push slot, 16 telescopic slot, 17 card slot, 18 push rod, 19 limit slot, 20 lifting bearing, 21 limit rod, 22 limit bearing, 23 threaded rod, 24 round table Gear, 25 support columns, 26 third bearings, 27 rotating rods, 28 telescopic rods, 29 landing plates, 30 building blocks.

Detailed ways

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment: As shown in Fig. 1-Fig. 5, a kind of cardiology patient care transfer device comprises a base plate 1, the four corners of the bottom wall of the base plate 1 are fixedly installed with supporting legs 2, and the bottom of the base plate 1 is provided with four groups of ten thousand The directional wheels 3 and the four sets of universal wheels 3 are all disclosed technologies, so they will not be repeated here. The top walls of the four sets of universal wheels 3 are fixedly connected with the bottom walls of the four sets of support legs 2 respectively, and the top walls of the bottom plate 1 are fixed. The bed board 4 is installed, and the left and right sides of the base plate 1 are provided with handrails 5, and the bottoms of the two sets of handrails 5 are provided with three sets of handrails 6, and the bottom walls of the two sets of handrails 5 are provided with rectangular grooves. Three groups of circular holes are provided on the left and right sides of the corresponding positions, the first bearings 7 are fixedly installed on the corresponding positions of the six groups of circular holes on the two groups of handrails 5, and the left and right sides of the top walls of the six groups of handrails 6 are equipped with The first rotating rod 8, the side walls of the two groups of first rotating rods 8 on the six groups of support rods 6 are respectively fixedly connected with the walls corresponding to the holes on the three groups of first bearings 7 inside the two groups of handrails 5, and the bottom wall of the bottom plate 1 is left and right. There are chutes 9 on both sides, three sets of hanging blocks 10 are arranged inside the two sets of chute 9, three sets of T-shaped grooves are opened on the top walls of the corresponding positions of the two sets of chutes 9, and the top walls of the six sets of hanging blocks 10 T-shaped blocks 11 are fixedly installed, and the side walls of the T-shaped blocks 11 are respectively attached to the walls of the corresponding positions of the three sets of T-shaped grooves inside the two sets of chute 9, and the three sets of handrails 6 at the bottom of the two sets of handrails 5 tend The bottom of the near side wall surface is provided with a circular hole, and the wall surface corresponding to the circular hole on the six groups of support rods 6 is fixedly equipped with a second bearing 12. The side wall surfaces are all fixedly equipped with rotating rods 13, and the side walls of the rotating rods 13 on the three groups of hanging blocks 10 on the left and right sides of the bottom of the bottom plate 1 are respectively connected with the upper holes of the second bearings 12 on the three groups of hand rods 6 at the bottom of the two groups of handrails 5. Corresponding position wall is fixedly connected, and the front side wall surface of base plate 1 is fixedly installed with headboard 14, and the front side wall surface of headboard 14 is provided with push groove 15, and the front side wall surface of headboard 14 pushes groove 15 and bed board 4 mutually. Correspondingly, the front and rear sides of the handrail 5 are provided with telescopic grooves 16, and the top and bottom walls of the two groups of telescopic grooves 16 are provided with draw-in grooves 17. 16 interpenetrate each other, two sets of telescopic grooves 16 are provided with push rods 18 inside, and the ends of the two groups of push rods 18 are extended to the outside of the bed board 4 through the two groups of telescopic grooves 16 respectively, and the bottom wall of the bed board 4 is provided with a circular Holes, the top of the side wall corresponding to the circular hole on the bed board 4 is provided with a limit groove 19, the inside of the bed board 4 is provided with a lift bearing 20, the bottom wall of the lift bearing 20 and the front end of the bottom wall of the corresponding position on the limit groove 19 fit together, The left and right side walls of the lifting bearing 20 are all fixedly installed with limit rods 21, and the side walls of two groups of limit rods 21 are far away from each other and are fixedly installed with limit bearings 22. The front and rear ends of the bottom wall at the corresponding position of the limit groove 19 are attached to each other. The bottom wall of the bottom plate 1 is provided with a threaded hole, and the threaded hole on the bottom plate 1 is opposite to the circular hole on the bottom wall of the bed plate 4. Should, the bottom of bottom plate 1 is provided with threaded rod 23, the top of threaded rod 23 extends to the inside of bed board 4 through the threaded hole on bottom plate 1, the side wall top of threaded rod 23 is fixedly connected with the wall surface of the corresponding position on the hole on lifting bearing 20, threaded The bottom end of the side wall of the rod 23 is fixedly equipped with a round platform gear 24, and the rear side of the bottom wall of the base plate 1 is fixedly equipped with a support column 25. The bottom end of the rear side wall of the support column 25 is provided with a circular through hole. A third bearing 26 is fixedly installed on the wall surface corresponding to the position of the through hole, and the rear side of the support column 25 is provided with a rotating rod 27. The sidewall front end of the side wall is fixedly equipped with a circular table gear 24, the circular table gear 24 on the rotary rod 27 and the circular table gear 24 on the threaded rod 23 are mutually meshed, and the left and right side wall surfaces of the bed board 4 are all provided with telescopic rods 28, and two groups of telescopic rods 28 are The technology has been disclosed, so I won’t go into details here. One end of the two groups of telescopic rods 28 approaching each other is fixedly equipped with a rotating rod 13, and the rear ends of the left and right side wall surfaces of the bed board 4 are provided with circular holes, and the left and right side wall surfaces of the bed board 4 The wall surface of the corresponding position of the circular hole is fixedly equipped with the second bearing 12, and the side walls of the rotating rod 13 on the two groups of telescopic rods 28 are respectively fixedly connected with the wall surface of the corresponding position of the hole on the second bearing 12 on the left and right sides of the bed board 4, and the bed board The rear end of 4 is provided with butt plate 29, and the top wall surface of the push rod 18 of the bottom of the back side and the rear side of the back plate 29 is fitted with each other, and the left and right side wall surfaces of the back plate 29 are all fixedly installed with block 30, two groups of telescopic rods The rear side walls of 28 are all provided with rectangular holes, and the rectangular holes on the two groups of telescopic rods 28 all run through the top and bottom walls of the corresponding group of telescopic rods 28, and the corresponding positions of the rectangular holes on the two groups of telescopic rods 28 are on the left and right side walls. There are circular holes, and the two sets of circular holes inside the rectangular holes on the two sets of telescopic rods 28 are fixed with the first bearings 7, and the corresponding positions of the holes on the two sets of first bearings 7 inside the two sets of telescopic rods 28 are all fixed on the walls. The first rotating rod 8 is installed, and the side walls of the two groups of first bearings 7 inside the two groups of telescopic rods 28 are fixedly connected with the bottoms of the left and right side walls of the two groups of building blocks 30 respectively.

Working principle of the present invention:

When in use, make the top wall of the base plate 1 correspond to the top wall of the operating table, push two sets of push rods 18 to fit the bottom wall of the bed board 4 and the top wall of the operating table, and place the patient’s side on the operating table The medical staff lifts the other side of the patient, and then pushes the push rod 18 to return the bed board 4 to its original position. A secondary injury situation occurs.

When the two groups of handrails 5 are pushed to the rear side, due to the restriction of the handrail 6, the handrails 5 will rotate downward. Inside the chute 9, the armrest 5 can prevent the patient from falling, and also prevent the armrest 5 from occupying a distance when the patient is moved onto the operating table.

The push rod 18 is in the inside of the telescopic groove 16, and the top wall surface and the bottom wall surface of the telescopic groove 16 are provided with a card slot 17. Through the telescopic groove 16, the push rod 18 can move back and forth inside the bed board 4. The rod 18 can move left and right inside the bed board 4, and the device can move the patient onto the operating table when it is on the left or right side of the operating table.

The inside of the bed board 4 is provided with a limiting groove 19, and the bottom wall of the lifting bearing 20 is attached to the middle of the bottom wall of the corresponding position on the limiting groove 19. The left and right sides of the bottom wall are attached to each other, and the limit rod 21 is prevented from rotating inside the bed board 4 through the limit of the limit groove 19 .

Moving the backing plate 29 upwards, the telescopic rod 28 is extended, and the second bearing 12, the rotating rod 13, the first bearing 7, and the first rotating rod 8 on the 28 are used to make the 2 telescopic rods 8 approach to the front side, and the two groups of The block 30 rides on the top walls of two groups of 5, and the board 29 becomes a table, which is convenient for patients to use.

Finally, it should be pointed out that the above embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above-mentioned embodiments, and many variations are possible. All simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall be deemed to belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a intracardiac branch of academic or vocational study patient nurses transfer device, includes bottom plate (1), its characterized in that: the bed board (4) is fixedly installed on the top wall surface of the bottom board (1), handrails (5) are arranged on the left side and the right side of the bottom board (1), three groups of handrails (6) are arranged at the bottoms of the two groups of handrails (5), rectangular grooves are formed in the bottom wall surfaces of the two groups of handrails (5), three groups of circular holes are formed in the left side wall surfaces and the right side wall surfaces of the positions corresponding to the rectangular grooves on the two groups of handrails (5), first bearings (7) are fixedly installed on the wall surfaces of the positions corresponding to the six groups of circular holes on the two groups of handrails (5), first rotating rods (8) are installed on the left side and the right side wall surfaces of the top wall surfaces of the six groups of handrails (6), side walls of the two groups of first rotating rods (8) on the six groups of handrails (6) are fixedly connected with the wall surfaces of the positions corresponding to the holes on the three groups of first bearings (7) inside the two groups of handrails (5), a headboard (14) is fixedly installed on the front side wall surfaces of the bottom board, push grooves (15) are formed in the headboard (14), push grooves (15) are formed in the front side wall surfaces of the bed board (14) and the front wall surfaces of the bed board (4), two groups of telescopic slots (16) are formed in the bottom wall surfaces of the telescopic slots (16), the top end of the side wall at the position corresponding to a circular hole on a bed plate (4) is provided with a limiting groove (19), a lifting bearing (20) is arranged inside the bed plate (4), limiting rods (21) are fixedly mounted on the left side wall surface and the right side wall surface of the lifting bearing (20), limiting bearings (22) are fixedly mounted at the ends, far away from the side walls, of the two groups of limiting rods (21), a threaded hole is formed in the bottom wall surface of a bottom plate (1), a threaded hole is formed in the bottom plate (1) and corresponds to the circular hole on the bottom wall surface of the bed plate (4), a threaded rod (23) is arranged at the bottom of the bottom plate (1), the top end of the threaded rod (23) extends to the inside of the bed plate (4) through the threaded hole in the bottom plate (1), the top end of the side wall of the threaded rod (23) is fixedly connected with the wall surface at the position corresponding to the hole on the lifting bearing (20), a circular truncated cone gear (24) is fixedly mounted at the bottom end of the side wall, a supporting column (25) is fixedly mounted at the rear side wall of the bottom wall of the bottom plate (1), a circular through hole is formed in the bottom end of the side wall surface of the supporting column (25), a circular through hole of the supporting column (25), a third through hole is fixedly mounted on the circular through the corresponding to the circular through hole of a third bearing (26), a front rotating rod (27) is arranged at the front end of a rotating rod (27), a rotating shaft bearing (27) and a rotating rod (27) is arranged on the front rotating rod (27), a rotating shaft front rotating shaft bearing (26) and extends to the front end of the rotating shaft bearing (27) of the rotating rod (27), the circular truncated cone gear (24) on the rotary rod (27) is meshed with the circular truncated cone gear (24) on the threaded rod (23).

2. A cardiology patient care transfer device of claim 1, wherein: the bottom wall left and right sides of bottom plate (1) has all been seted up spout (9), and the inside of two sets of spouts (9) all is provided with three group's hanging blocks (10), and the circular port has all been seted up to one side wall bottom that three group's rest bars (6) of two sets of handrail (5) bottoms approached mutually, and six group's rest bars (6) go up the equal fixed mounting in circular port corresponding position wall have second bearing (12).

3. A cardiology patient care transfer device of claim 1, wherein: the two groups of clamping grooves (17) are communicated with the corresponding group of telescopic grooves (16) respectively, and the ends, far away from each other, of the two groups of push rods (18) extend to the outside of the bed plate (4) through the two groups of telescopic grooves (16) respectively.

4. A cardiology patient care transfer device of claim 1, wherein: the bottom wall of the lifting bearing (20) is mutually attached to the front end of the bottom wall at the corresponding position on the limiting groove (19), and the bottom ends of the side walls of the two groups of limiting bearings (22) are mutually attached to the front end and the rear end of the bottom wall at the corresponding position of the limiting groove (19) respectively.

5. A cardiology patient care transfer device of claim 1, wherein: the utility model discloses a bed board, including bed board (4), the rear end of bed board (4) is provided with and supports board (29), the bottom of supporting board (29) is laminated with the top wall of the push rod (18) of rear side each other, the equal fixed mounting of the left and right sides wall of supporting board (29) has piece (30) of taking, the rectangular hole has all been seted up to the rear wall face of two sets of telescopic links (28), the rectangular hole all runs through the top and the bottom wall of a corresponding set of telescopic link (28) on two sets of telescopic links (28), the circular port has all been seted up to the left and right sides wall face of rectangular hole correspondence position on two sets of telescopic links (28).

6. A cardiology patient care transfer device of claim 5, wherein: two sets of equal fixed mounting of one end that telescopic link (28) approached mutually has bull stick (13), and the circular port has all been seted up to both sides lateral wall face rear end about bed board (4), and the equal fixed mounting of circular port correspondence position wall has second bearing (12) about bed board (4), and the lateral wall of bull stick (13) on two sets of telescopic links (28) corresponds position wall fixed connection with second bearing (12) upper bore on the lateral wall face about bed board (4) respectively.

7. A cardiology patient care transfer device of claim 5, wherein: two sets of go up two sets of circular ports of rectangular hole inside on telescopic link (28) and all fixed mounting have first bearing (7), and the equal fixed mounting of pore pair position wall has first bull stick (8) on two sets of first bearing (7) of two sets of telescopic link (28) inside, and one side wall that two sets of first bearing (7) of two sets of telescopic link (28) inside approach mutually is respectively with the left and right sides wall face bottom fixed connection of two sets of pieces of taking (30).

8. A cardiology patient care transfer device of claim 2, wherein: two sets of three T type grooves have all been seted up to the corresponding position top wall of spout (9), and the equal fixed mounting of top wall of six groups hanging piece (10) has T type piece (11), and the lateral wall of T type piece (11) corresponds the position wall with three sets of T type grooves of two sets of spouts (9) inside respectively and laminates each other.

9. A cardiology patient care transfer device of claim 2, wherein: the side wall surfaces of three groups of hanging blocks (10) in the two groups of sliding grooves (9) far away from each other are fixedly provided with rotating rods (13), and the side walls of the rotating rods (13) on the three groups of hanging blocks (10) on the left side and the right side of the bottom plate (1) are fixedly connected with the wall surfaces of the corresponding positions of the holes in the second bearings (12) on the three groups of holding rods (6) at the bottoms of the two groups of handrails (5) respectively.

10. A cardiology patient care transfer device of claim 1, wherein: the supporting legs (2) are fixedly mounted at four corners of the bottom wall surface of the bottom plate (1), four groups of universal wheels (3) are arranged at the bottom of the bottom plate (1), and top wall surfaces of the four groups of universal wheels (3) are fixedly connected with the bottom wall surfaces of the four groups of supporting legs (2) respectively.

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