An improved gastric juice separation device

Abstract

The present invention relates to the technical field of medical devices, and particularly to an improved gastric juice separation device, which includes a bottom plate. A rotating shaft is rotatably connected to the middle of the bottom plate. The rotating shaft is drivingly connected to a first power unit. A centrifugal assembly is detachably connected to the top of the rotating shaft. A support part is disposed through the middle of the rotating shaft, and the support part is rotatably connected to the centrifugal assembly. A liquid extraction assembly is provided at the edge of the top wall of the bottom plate; the centrifugal assembly includes a rotating table, the rotating table is detachably connected to the rotating shaft, the rotating table is coaxially arranged with the rotating shaft, the bottom of the rotating table is rotatably connected to the support part, a plurality of test tubes are provided on the top of the rotating table, and a limiting part is detachably connected to the top of the rotating table. The present invention can achieve the purpose of fully centrifuging the gastric juice in the test tube to stratify the gastric juice.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an improved gastric juice separation device. Background Art

[0002] Gastric juice is the general term for gastric secretions. It includes water, electrolytes, lipids, proteins, and polypeptide hormones. Pure gastric juice is a colorless and transparent liquid, with a pH of 0.9 - 1.5, a specific gravity of 1.006 - 1.009, a daily secretion volume of 1.5 - 2.5 liters, and contains about 0.3 - 0.5% of solids. The main inorganic substances are Na+, K+, H+, and Cl-. Gastric juice separation is very important in gastric juice examination. Before performing gastric juice examination, it is necessary to perform separation treatment on gastric juice. Therefore, there is an urgent need for an improved gastric juice separation device to solve this problem. Summary of the Invention

[0003] The purpose of the present invention is to provide an improved gastric juice separation device to solve the above problems and achieve the purpose of fully centrifuging the gastric juice in the test tube to make the gastric juice stratified.

[0004] To achieve the above purpose, the present invention provides the following solution: An improved gastric juice separation device, including a bottom plate. A rotating shaft is rotatably connected to the middle of the bottom plate. The rotating shaft is drivingly connected to a first power unit. A centrifugal component is detachably connected to the top of the rotating shaft. A support part is penetrated through the middle of the rotating shaft. The support part is rotatably connected to the centrifugal component. A liquid taking component is arranged at the edge of the top wall of the bottom plate;

[0005] The centrifugal component includes a rotating table. The rotating table is detachably connected to the rotating shaft. The rotating table is coaxially arranged with the rotating shaft. The bottom of the rotating table is rotatably connected to the support part. A plurality of test tubes are arranged on the top of the rotating table. A limiting part is detachably connected to the top of the rotating table.

[0006] Preferably, a square hole is opened in the middle of the rotating table. The top of the rotating shaft is of a square structure and is adapted to the square hole. A sliding groove is opened on the inner wall of the square hole. A limiting pin is horizontally slidably connected to the sliding groove. A first spring is arranged between the limiting pin and the side wall of the sliding groove. Two ends of the first spring are respectively fixedly connected to the limiting pin and the side wall of the sliding groove. A handle is fixedly connected to the top of the limiting pin. The top of the handle extends beyond the rotating table.

[0007] Preferably, a plurality of placement grooves are opened at the edge of the rotating table. The plurality of placement grooves are arranged at equal intervals along the axis of the rotating table. Limiting grooves are opened on the opposite side walls of the placement grooves. The cross section of the limiting groove is of an L-shaped structure. Two limiting columns are fixedly connected to the side wall of the top of the test tube. The two limiting columns are symmetrically arranged and are adapted to the limiting grooves.

[0008] Preferably, the supporting portion includes a support, the rotating shaft passes through the middle of the support, a thrust bearing is fixedly connected to the top of the support, the thrust bearing is rotatably connected to the rotating table, a plurality of columns are fixedly connected to the bottom of the support, one end of the column away from the support is fixedly connected to the base plate, and a plurality of buffer members are fixedly connected to the side walls of the support, and the buffer members correspond to the positions of the placement grooves.

[0009] Preferably, the buffer member comprises a bracket, one end of the bracket is fixedly connected to the side wall of the support, the other end of the bracket is an arc-shaped structure and is fixedly connected to a plurality of second springs, and the plurality of second springs are fixedly connected to the same buffer pad at one end away from the bracket.

[0010] Preferably, the limiting part includes a limiting cover, which is detachably connected to the top of the rotating table, the limiting cover is coaxially arranged with the rotating table, the cross-section of the limiting cover is a U-shaped structure, the side wall of the limiting cover is provided with a plurality of makeshift grooves, the makeshift grooves correspond to the positions of the placement grooves, the top wall of the rotating table is provided with a plurality of blind holes, the top wall of the limiting cover is provided with a plurality of through holes, the through holes correspond to the positions of the blind holes, a stud is passed through the through hole, the stud is threadedly connected with a first nut and a second nut, the first nut and the second nut are located on the upper and lower sides of the limiting cover, and the bottom of the stud is inserted into the blind hole.

[0011] Preferably, the first power unit includes a first motor, the bottom of the first motor is fixedly connected to the bottom plate, the output shaft of the first motor is coaxially fixedly connected to a second gear, the outer wall of the rotating shaft is coaxially fixedly connected to a first gear, and the first gear is meshingly connected to the second gear.

[0012] Preferably, the liquid extraction assembly includes a crankshaft, which is vertically arranged, the bottom of the crankshaft is rotatably connected to the base plate, the base plate is transmission-connected to a second power unit, a cross plate is fixedly connected to the top of the crankshaft, a sleeve is fixedly connected to the side of the cross plate close to the rotating table, the sleeve is vertically slidably connected to a rack, a needle is fixedly connected to the bottom of the rack, a peristaltic pump is fixedly connected to the top of the cross plate, the peristaltic pump is connected to the needle through a catheter, a second motor is fixedly connected to the top of the cross plate, the output shaft of the second motor is coaxially fixed with a fourth gear, the top of the cross plate is rotatably connected to a third gear, one side of the third gear is meshingly connected to the rack, and the other side of the third gear is meshingly connected to the fourth gear.

[0013] Preferably, the second power unit includes a third motor, the bottom of the third motor is fixedly connected to the top of the base plate, the output shaft of the third motor is coaxially fixedly connected with a fifth gear, the crankshaft is coaxially fixedly connected with a ring gear, and the ring gear is meshingly connected with the fifth gear.

[0014] The present invention has the following technical effects: the bottom plate and the supporting legs are used to support the overall device, the first power unit is used to provide power for the rotation of the rotating shaft, the rotation of the rotating shaft drives the rotating table to rotate, a number of test tubes are placed on the rotating table, the test tubes are filled with gastric juice, the rotating table drives the test tubes to rotate, so as to achieve the centrifugal effect on the gastric juice in the test tubes, the supporting part plays the role of auxiliary support of the rotating table to prevent the rotating table from generating a large amount of shaking during the rotation process, the liquid collection component can take out the gastric juice at different depths in the test tube, and the limit part can control the degree of inclination of the test tube during the centrifugal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 A top view of the rotating platform of the present invention;

[0018] Figure 3 For the present invention Figure 1 A partial enlarged view of the middle part;

[0019] Figure 4 This is a schematic diagram of the structure of the buffer member of the present invention;

[0020] Figure 5 It is a top view of the limiting cover of the present invention;

[0021] Figure 6 This is a front view of the limiting cover of the present invention;

[0022] Figure 7 This is a front view of the test tube of the present invention;

[0023] Figure 8 A top view of a test tube of the present invention;

[0024] Among them, 1. outrigger; 2. counterweight; 3. bottom plate; 4. column; 5. buffer; 6. rotating table; 7. limiting groove; 8. rotating shaft; 9. first gear; 10. first motor; 11. second gear; 12. support; 13. limiting cover; 14. relief groove; 15. first nut; 16. second nut; 17. stud; 18. thrust bearing; 19. needle head; 20. sliding sleeve; 21. rack; 22. third gear; 23. second motor; 24. fourth gear; 25. peristaltic pump; 26. cross plate; 27. crankshaft; 28. fifth gear; 29. gear ring; 30. third motor; 31. test tube; 32. limiting post; 33. first spring; 34. limiting pin; 35. handle; 36. sliding groove; 37. placement groove; 38. blind hole; 39. square hole; 40. through hole; 501. bracket; 502. buffer pad; 503. second spring. Detailed implementation manners

[0025] 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, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0027] Referring to Figures 1-8 , this embodiment provides an improved gastric juice separation device, including a bottom plate 3. A rotating shaft 8 is rotatably connected to the middle of the bottom plate 3. The rotating shaft 8 is drivingly connected to a first power unit. The top of the rotating shaft 8 is detachably connected to a centrifugal component. A support part penetrates through the middle of the rotating shaft 8. The support part is rotatably connected to the centrifugal component. A liquid extraction component is arranged at the edge of the top wall of the bottom plate 3;

[0028] The centrifugal component includes a rotating table 6. The rotating table 6 is detachably connected to the rotating shaft 8. The rotating table 6 is coaxially arranged with the rotating shaft 8. The bottom of the rotating table 6 is rotatably connected to the support part. A plurality of test tubes 31 are arranged on the top of the rotating table 6. A limiting part is detachably connected to the top of the rotating table 6.

[0029] A plurality of legs 1 are fixedly connected to the bottom of the base plate 3. The base plate 3 and the legs 1 are used to support the entire device. The first power unit is used to provide power for the rotation of the rotating shaft 8. A counterweight block 2 is fixedly connected to the bottom of the rotating shaft 8. The rotation of the rotating shaft 8 drives the rotating table 6 to rotate. A plurality of test tubes 31 are placed on the rotating table 6. The test tubes 31 are filled with gastric juice. The rotating table 6 drives the test tubes 31 to rotate to achieve a centrifugal effect on the gastric juice in the test tubes 31. The supporting portion plays a role in auxiliary support of the rotating table 6 to prevent the rotating table 6 from generating a large amount of shaking during the rotation process. The liquid collection component can take out the gastric juice at different depths in the test tube 31, and the limit portion can control the degree of inclination of the test tube 31 during the centrifugal operation.

[0030] A further optimized solution is provided in which a square hole 39 is provided in the middle of the rotating table 6, the top of the rotating shaft 8 is a square structure, the top of the rotating shaft 8 is adapted to the square hole 39, a sliding groove 36 is provided on the inner wall of the square hole 39, the sliding groove 36 is horizontally slidably connected to the limit pin 34, a first spring 33 is provided between the limit pin 34 and the side wall of the sliding groove 36, the two ends of the first spring 33 are respectively fixedly connected to the limit pin 34 and the side wall of the sliding groove 36, a handle 35 is fixedly connected to the top of the limit pin 34, and the top of the handle 35 is arranged beyond the rotating table 6. The rotation of the rotating table 6 is achieved by the cooperation between the square hole 39 and the top of the rotating shaft 8. When installing the rotating table 6, the square hole 39 of the rotating table 6 is aligned with the rotating shaft 8, and the limit pin 34 is inserted into the hole on the side wall of the rotating shaft 8 to prevent the rotating table 6 from falling out of the rotating shaft 8. When the rotating table 6 needs to be removed, the operator manually moves the handle 35, and the handle 35 drives the limit pin 34 to slide along the slide groove 36. At this time, the limit pin 34 no longer limits the position of the rotating table 6, and the rotating table 6 can be removed.

[0031] To further optimize the solution, a plurality of placement grooves 37 are provided on the edge of the rotating table 6, and the plurality of placement grooves 37 are arranged at equal intervals along the axis of the rotating table 6. A limiting groove 7 is provided on the side wall opposite to the placement groove 37, and the cross-section of the limiting groove 7 is an L-shaped structure. Two limiting columns 32 are fixedly connected to the side wall of the top of the test tube 31, and the two limiting columns 32 are symmetrically arranged, and the limiting columns 32 are adapted to the limiting groove 7. The limiting column 32 of the test tube 31 is aligned with the limiting groove 7 and inserted, that is, the test tube 31 is installed on the rotating table 6. The cooperation between the limiting column 32 and the limiting groove 7 prevents the test tube 31 from being thrown out under the action of centrifugation. During the rotation of the rotating table 6, as the rotation speed increases, the centrifugal force received by the test tube 31 gradually increases, the limiting column 32 can rotate around the limiting groove 7, and the angle between the test tube 31 and the vertical direction gradually increases. The limiting part is used to limit the angle between the test tube 31 and the vertical direction. The inclination angle of the test tube 31 of the traditional separation device is fixed, and it is difficult to achieve the best stratification effect. In the present invention, the angle of the test tube 31 is controllable, and the centrifugal effect is more prominent.

[0032] Further optimization solution: The supporting part includes a support 12. The rotating shaft 8 penetrates through the middle of the support 12. A thrust bearing 18 is fixedly connected to the top of the support 12. The thrust bearing 18 is rotatably connected to the rotating table 6. A plurality of columns 4 are fixedly connected to the bottom of the support 12. One end of the column 4 away from the support 12 is fixedly connected to the bottom plate 3. A plurality of buffer members 5 are fixedly connected to the side wall of the support 12. The buffer members 5 correspond to the placement grooves 37 in position. The rotating connection between the rotating table 6 and the support 12 is realized through the thrust bearing 18, reducing the shaking amount of the rotating table 6 during rotation. The buffer members 5 are used to buffer the impact between the test tube 31 and the support 12 when the centrifugal operation stops.

[0033] Further optimization solution: The buffer member 5 includes a bracket 501. One end of the bracket 501 is fixedly connected to the side wall of the support 12. The other end of the bracket 501 is of an arc structure and is fixedly connected with a plurality of second springs 503. The same buffer pad 502 is fixedly connected to one end of the plurality of second springs 503 away from the bracket 501. After the centrifugal operation stops, the test tube 31 gradually approaches the support 12 and contacts the side wall of the support 12. The test tube 31 first contacts the buffer pad 502, and the buffer pad 502 compresses the second springs 503, playing a buffering role to prevent the test tube 31 from being broken due to excessive impact force.

[0034] Further optimization solution: The limiting part includes a limiting cover 13. The limiting cover 13 is detachably connected to the top of the rotating table 6. The limiting cover 13 is coaxially arranged with the rotating table 6. The cross-section of the limiting cover 13 is of a U-shaped structure. A plurality of relief grooves 14 are formed in the side wall of the limiting cover 13. The relief grooves 14 correspond to the placement grooves 37 in position. A plurality of blind holes 38 are formed in the top wall of the rotating table 6. A plurality of through holes 40 are formed in the top wall of the limiting cover 13. The through holes 40 correspond to the blind holes 38 in position. A double-headed stud 17 is inserted through the through hole 40. The double-headed stud 17 is threadedly connected with a first nut 15 and a second nut 16. The first nut 15 and the second nut 16 are located on the upper and lower sides of the limiting cover 13. The bottom of the double-headed stud 17 is inserted into the blind hole 38. The relief grooves 14 prevent interference between the limiting cover 13 and the test tube 31. During the process of the angle of the test tube 31 gradually increasing, the side wall of the test tube 31 will contact the edge of the limiting cover 13, restricting the further increase of the angle of the test tube 31. When installing the limiting cover 13, insert the double-headed stud 17 into the through hole 40, tighten the first nut 15 and the second nut 16 to fixedly connect the double-headed stud 17 and the limiting cover 13 together, and then insert the bottom of the double-headed stud 17 into the blind hole 38.

[0035] Further optimization solution: The first power part includes a first motor 10. The bottom of the first motor 10 is fixedly connected to the bottom plate 3. A second gear 11 is coaxially fixedly connected to the output shaft of the first motor 10. A first gear 9 is coaxially fixedly connected to the outer wall of the rotating shaft 8. The first gear 9 is meshed and connected with the second gear 11. The rotation of the first motor 10 drives the second gear 11 to rotate. The second gear 11 drives the first gear 9 to rotate through the meshing action, and the first gear 9 drives the rotating shaft 8 to rotate.

[0036] For a further optimized solution, the liquid extraction assembly includes a crankshaft 27 which is vertically arranged. The bottom of the crankshaft 27 is rotatably connected to the bottom plate 3. The bottom plate 3 is drivingly connected to a second power unit. A cross plate 26 is fixedly connected to the top of the crankshaft 27. A sliding sleeve 20 is fixedly connected to the cross plate 26 near one side of the rotating table 6. A rack 21 is vertically slidably connected to the sliding sleeve 20. A needle 19 is fixedly connected to the bottom of the rack 21. A peristaltic pump 25 is fixedly connected to the top of the cross plate 26. The peristaltic pump 25 and the needle 19 are communicated through a conduit. A second motor 23 is fixedly connected to the top of the cross plate 26. A fourth gear 24 is coaxially fixedly connected to the output shaft of the second motor 23. A third gear 22 is rotatably connected to the top of the cross plate 26. One side of the third gear 22 is meshed with the rack 21, and the other side of the third gear 22 is meshed with the fourth gear 24. The second power unit drives the crankshaft 27 to rotate, facilitating the liquid extraction from the test tube 31. When liquid extraction is required, the second power unit controls the rotation of the crankshaft 27 to align the needle 19 with the test tube 31. The second motor 23 controls the downward movement of the rack 21 to drive the needle 19 to extend into the test tube 31, and the liquid in the test tube 31 is sucked out through the peristaltic pump 25.

[0037] For a further optimized solution, the second power unit includes a third motor 30. The bottom of the third motor 30 is fixedly connected to the top of the bottom plate 3. A fifth gear 28 is coaxially fixedly connected to the output shaft of the third motor 30. A toothed ring 29 is coaxially fixedly connected to the crankshaft 27. The toothed ring 29 is meshed with the fifth gear 28. The rotation of the third motor 30 drives the fifth gear 28 to rotate. The fifth gear 28 drives the toothed ring 29 to rotate through meshing, and the toothed ring 29 drives the crankshaft 27 to rotate.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] The embodiments described above are only used to describe the preferred mode of the present invention, rather than to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. An improved gastric juice separation device, characterized in that: It comprises a bottom plate (3), a rotating shaft (8) is rotatably connected to the middle of the bottom plate (3), the rotating shaft (8) is transmission-connected to a first power unit, a centrifugal assembly is detachably connected to the top of the rotating shaft (8), a supporting portion is passed through the middle of the rotating shaft (8), the supporting portion is rotatably connected to the centrifugal assembly, and a liquid collection assembly is provided on the edge of the top wall of the bottom plate (3); The centrifugal assembly comprises a rotating table (6), the rotating table (6) is detachably connected to the rotating shaft (8), the rotating table (6) and the rotating shaft (8) are coaxially arranged, the bottom of the rotating table (6) is rotatably connected to the supporting portion, a plurality of test tubes (31) are arranged on the top of the rotating table (6), and the top of the rotating table (6) is detachably connected to a limiting portion; The rotating table (6) is provided with a plurality of placement grooves (37) on its side, the plurality of placement grooves (37) being arranged at equal intervals along the axis of the rotating table (6), the side walls opposite to the placement grooves (37) being provided with limiting grooves (7), the cross section of the limiting grooves (7) being an L-shaped structure, the top side wall of the test tube (31) being fixedly connected with two limiting columns (32), the two limiting columns (32) being symmetrically arranged, and the limiting columns (32) being adapted to the limiting grooves (7); The limiting part comprises a limiting cover (13), the limiting cover (13) is detachably connected to the top of the rotating platform (6), the limiting cover (13) and the rotating platform (6) are coaxially arranged, the cross section of the limiting cover (13) is a "匚"-shaped structure, the side wall of the limiting cover (13) is provided with a plurality of giving way grooves (14), the positions of the giving way grooves (14) and the placement grooves (37) correspond to each other, the top wall of the rotating platform (6) is provided with a plurality of blind holes (38), and the limiting cover (13) is provided with a plurality of blind holes (38). A plurality of through holes (40) are provided on the top wall of the cover (13), the through holes (40) corresponding to the positions of the blind holes (38), a stud bolt (17) is passed through the through holes (40), a first nut (15) and a second nut (16) are threadedly connected to the stud bolt (17), the first nut (15) and the second nut (16) are located at the upper and lower sides of the limiting cover (13), and the bottom of the stud bolt (17) is inserted into the blind hole (38).

2. The improved gastric juice separation device according to claim 1, characterized in that: A square hole (39) is provided in the middle of the rotating table (6), the top of the rotating shaft (8) is a square structure, the top of the rotating shaft (8) is adapted to the square hole (39), a sliding groove (36) is provided on the inner wall of the square hole (39), the sliding groove (36) is horizontally slidably connected to a limit pin (34), a first spring (33) is provided between the limit pin (34) and the side wall of the sliding groove (36), the two ends of the first spring (33) are respectively fixed to the limit pin (34) and the side wall of the sliding groove (36), a handle (35) is fixed to the top of the limit pin (34), and the top of the handle (35) is arranged beyond the rotating table (6).

3. The improved gastric juice separation device according to claim 1, characterized in that: The support part includes a support seat (12), the rotating shaft (8) passes through the middle of the support seat (12), a thrust bearing (18) is fixedly connected to the top of the support seat (12), the thrust bearing (18) is rotationally connected to the rotating table (6), several columns (4) are fixedly connected to the bottom of the support seat (12), one end of the column (4) far from the support seat (12) is fixedly connected to the bottom plate (3), and several buffer members (5) are fixedly connected to the side wall of the support seat (12), and the buffer members (5) correspond to the placement grooves (37) in position.

4. The improved gastric juice separation device according to claim 3, characterized in that: The buffer member (5) includes a bracket (501), one end of the bracket (501) is fixedly connected to the side wall of the support seat (12), the other end of the bracket (501) is of an arc structure and is fixedly connected with several second springs (503), and the same buffer pad (502) is fixedly connected to one ends of the several second springs (503) far from the bracket (501).

5. The improved gastric juice separation device according to claim 1, characterized in that: The first power part includes a first motor (10), the bottom of the first motor (10) is fixedly connected to the bottom plate (3), a second gear (11) is coaxially fixedly connected to the output shaft of the first motor (10), a first gear (9) is coaxially fixedly connected to the outer wall of the rotating shaft (8), and the first gear (9) is meshed and connected with the second gear (11).

6. The improved gastric juice separation device according to claim 1, characterized in that: The liquid extraction assembly includes a crankshaft (27), the crankshaft (27) is arranged vertically, the bottom of the crankshaft (27) is rotationally connected to the bottom plate (3), the bottom plate (3) is drivingly connected with a second power part, a cross plate (26) is fixedly connected to the top of the crankshaft (27), a sliding sleeve (20) is fixedly connected to one side of the cross plate (26) close to the rotating table (6), a rack (21) is vertically slidably connected to the sliding sleeve (20), a needle head (19) is fixedly connected to the bottom of the rack (21), a peristaltic pump (25) is fixedly connected to the top of the cross plate (26), the peristaltic pump (25) is communicated with the needle head (19) through a conduit, a second motor (23) is fixedly connected to the top of the cross plate (26), a fourth gear (24) is coaxially fixedly connected to the output shaft of the second motor (23), a third gear (22) is rotationally connected to the top of the cross plate (26), one side of the third gear (22) is meshed and connected with the rack (21), and the other side of the third gear (22) is meshed and connected with the fourth gear (24).

7. The improved gastric juice separation device according to claim 6, characterized in that: The second power part includes a third motor (30), the bottom of the third motor (30) is fixedly connected to the top of the bottom plate (3), a fifth gear (28) is coaxially fixedly connected to the output shaft of the third motor (30), a toothed ring (29) is coaxially fixedly connected to the crankshaft (27), and the toothed ring (29) is meshed and connected with the fifth gear (28).

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