Plastic surgery device with fixed maxillofacial structure

Abstract

The invention belongs to the technical field of medical science, and particularly relates to a plastic surgery device with a fixed maxillofacial structure, and provides the following scheme that the plastic surgery device comprises a fixed seat, a supporting mechanism is arranged at the top of the fixed seat, and a second spring is connected between the bottom of the supporting mechanism and the top of the fixed seat through a bolt; positioning mechanisms are arranged between the two sides of the bottom of the supporting mechanism and the two sides of the top of the supporting mechanism, and side face fixing mechanisms are arranged between the two sides of the top of the supporting mechanism and the top of the fixing base. According to the fixing device, the maxillofacial of a patient can be conveniently fixed, due to the fact that the positions of the three fixing blocks are different, and the size of the maxillofacial of the patient is gradually reduced from the head to the lower jaw, the maxillofacial of the patient can be effectively fixed through the fixing blocks according to the difference of the size of the maxillofacial of the patient, and therefore the plastic surgery effect of the patient is improved; and the situation that the maxillofacial surface deviates during fixing due to different maxillofacial surface sizes of the patient, and consequently plastic surgery and beauty treatment of the patient are affected is prevented.

Description

Technical Field

[0001] The present invention relates to the field of medicine, and particularly to a plastic and aesthetic device with a fixed maxillofacial structure. Background Art

[0002] Plastic and aesthetic surgery refers to the repair and reshaping of a person's appearance and the morphology of various parts of the human body using surgical methods, drugs, medical devices, and other medical techniques, and is a highly scientific, technical, and artistic medical science aimed at enhancing the external beauty of the human body. Among them, plastic and aesthetic devices include auxiliary fixing devices, which improve the safety of plastic and aesthetic surgeries. The most commonly used is the fixing device for maxillofacial plastic surgery.

[0003] After retrieval, a Chinese patent application with the publication number CN113712682A discloses a plastic and aesthetic device with a fixed maxillofacial structure, including a base, a control panel, and a controller. A rotating assembly is provided above the base. The rotating assembly includes a control panel. A control panel is provided above the base. A controller is provided above the base. An electric cylinder is connected to the base through a movable slot, and the other end of the electric cylinder is connected to a backrest through a movable slot. A rotating shaft is provided outside the base, and a backrest is connected to the outside of the rotating shaft. A protective pad is provided inside the backrest. The present invention can achieve angle adjustment, thus facilitating operations on the edge of the maxillofacial region, improving the plastic surgery efficiency, and also facilitating operations on different parts. It can adapt to different users for fixing the maxillofacial region, thereby improving the use efficiency of the device.

[0004] When the existing device fixes the maxillofacial region, it usually fixes both sides of the maxillofacial region through a clamping mechanism. However, during the fixing process, the maxillofacial region often shifts during fixation due to different maxillofacial sizes of patients, thus affecting the plastic and aesthetic surgery of the patients. Summary of the Invention

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A plastic and aesthetic device with a fixed maxillofacial structure, including a fixed seat. A support mechanism is provided on the top of the fixed seat, and a second spring is connected between the bottom of the support mechanism and the top of the fixed seat by bolts. A positioning mechanism is provided between the two sides of the bottom and the two sides of the top of the support mechanism. A side fixing mechanism is provided between the two sides of the top of the support mechanism and the top of the fixed seat.

[0007] Preferably, the support mechanism includes a support base, a headrest, an adjustment frame, a threaded rod, and a turntable. The bottom of the adjustment frame is bolted to the top of the fixed base. The two opposite sides of the adjustment frame are rotatably connected to the two ends of the threaded rod through bearings. An adjustment block is slidably connected to the inner wall of the adjustment frame. A threaded hole is formed through the top of the adjustment block, and the threaded hole is threadedly connected to the threaded rod. The bottom of the turntable is welded to the top of the threaded rod. One side of the adjustment block is bolted to a support shaft, and the other side of the support shaft is bolted to the support base. The bottom of the headrest is bolted to the top of the support base. A recess is provided at the top of the headrest, and a limiting plate is bolted to one side of the recess.

[0008] Preferably, the side fixing mechanism includes a clamping plate, a plurality of fixing blocks, a support block, a rotating rod, a first transmission component, a second transmission component, and a support rod. The bottom of the support block is bolted to the top of the support base. The support base and the rotating rod are rotatably connected through a bearing. The rotating rod is connected to the clamping plate through the second transmission component. The bottom of the support rod is bolted to the top of the support base. The support rod and the rotating rod are connected through the first transmission component. A first spring is bolted between one side of the clamping plate and the fixing block. There are differences in the distances between the plurality of fixing blocks and the clamping plate. Sliding grooves are provided on both sides of the top of the support base, and sliders are slidably connected to the inner walls of the sliding grooves. The top of the slider is fixed to the bottom of the clamping plate.

[0009] Preferably, the first transmission component is composed of a first rack and a first gear, and the first rack and the first gear are meshed. The first gear is fixedly sleeved on the outer wall of the rotating rod. One side of the first rack is bolted to the support rod. A notch is provided on one side of the support base, and the notch is slidably connected to the support rod.

[0010] Preferably, the second transmission component is composed of a second gear and a second rack, and the second gear and the second rack are meshed. One side of the second rack is bolted to the clamping plate. The second gear is fixedly sleeved on the outer wall of the rotating rod.

[0011] Preferably, the positioning mechanism is composed of two positioning rails and two push rods. One of the positioning rails is bolted to the bottom of the support base, and the other positioning rail is bolted to the top of the fixed base. Positioning blocks are slidably connected to both sides of the inner walls of the two positioning rails. The two ends of the two push rods are connected to the positioning blocks through hinges. The two push rods are cross-distributed, and the two push rods are rotatably connected through a bearing.

[0012] Preferably, positioning openings are formed through both opposite sides of the positioning rail, and positioning shafts are slidably connected to the inner walls of the positioning openings. One end of the positioning shaft is welded to the positioning block.

[0013] Preferably, a top fixing mechanism is provided between the positioning mechanism and the top of the supporting mechanism, and a cooperation is formed between the top fixing mechanism and the supporting mechanism.

[0014] Preferably, the top fixing mechanism includes a support plate, a first airbag, a push plate, a guide plate, a second airbag, a top plate and an air cushion. The bottom of the support plate is fixedly connected to the top of the fixed seat. Both ends of the push plate are welded to the two positioning shafts. The first airbag is located between the push plate and the support plate. The bottom of the guide plate is bolted to the top of the support seat. A guiding opening is formed through one side of the guide plate. A guiding block is slidably connected to the inner wall of the guiding opening. One side of the guiding block is fixedly connected to the top plate. The top of the air cushion is adhesively bonded to the bottom of the top plate. The inside of the air cushion is made of hollow material. The second airbag is located between the top of the guiding block and the guiding opening. A trachea is provided between the first airbag and the second airbag.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. By providing the supporting mechanism and the side fixing mechanism, when fixing a patient's plastic surgery, the patient lies on the plastic surgery instrument, with the head resting on the headrest. The head of the patient is limited by the limiting plate, and the position of the patient's head is located by the concave part of the headrest. At this time, rotate the turntable, and the turntable will drive the headrest to move downward, so as to facilitate the adjustment of the height of the patient's head for plastic surgery treatment. During the downward movement of the headrest, the first gear will move downward with the downward movement of the headrest. At this time, through meshing, the first rack drives the first gear to rotate, and the rotating rod drives the second gear to rotate with the rotation of the first gear. At this time, through meshing, the second gear drives the second rack to move to one side. At this time, the second rack will drive the clamping plate to move when moving, so that the fixing block acts on both sides of the patient's jaw surface to facilitate the fixing of the patient's jaw surface. Since the positions of the three fixing blocks are different, and the size of the patient's jaw surface gradually decreases from the head to the lower jaw, therefore, the fixing block can effectively fix the patient's jaw surface according to the difference in the size of the patient's jaw surface, thereby improving the plastic surgery effect of the patient and preventing the jaw surface from shifting during fixation due to different sizes of the patient's jaw surface, which affects the patient's plastic surgery. Compared with the existing simple fixation, the fixation of the present invention can better fit the patient's jaw surface effectively, thereby improving the comfort of fixation while achieving effective fixation;

[0017] 2. Through the support mechanism and the top fixing mechanism provided in the present invention, when the headrest moves downward, the positioning mechanism will move to both sides under the action of the headrest pressure. At this time, the push plate will move along with the movement of the positioning mechanism. When the push plate moves, it will squeeze the first airbag. At this time, the gas inside the first airbag will be transported to the inside of the second airbag through the air pipe after being squeezed. The air pressure inside the second airbag will increase with the input of the gas, and the second airbag will bulge under the action of the air pressure. The bulging second airbag will push the top plate downward, so that the air cushion can fix the top of the patient's maxillofacial region. Through the interaction between the top fixing mechanism and the side fixing mechanism, the maxillofacial region of the patient can be effectively fixed, facilitating the plastic surgery treatment of the patient and preventing the maxillofacial region of the patient from shaking during the plastic surgery treatment, thereby affecting the plastic surgery treatment of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a plastic and aesthetic device with a fixed maxillofacial structure proposed by the present invention;

[0019] Figure 2 is a schematic structural diagram of the support mechanism of a plastic and aesthetic device with a fixed maxillofacial structure proposed by the present invention;

[0020] Figure 3 is a schematic structural diagram of the positioning mechanism of a plastic and aesthetic device with a fixed maxillofacial structure proposed by the present invention;

[0021] Figure 4 is a schematic structural diagram of the side fixing mechanism of a plastic and aesthetic device with a fixed maxillofacial structure proposed by the present invention;

[0022] Figure 5 is Figure 4 a schematic structural diagram of the structure at position A proposed in

[0023] Figure 6 is Figure 4 a schematic structural diagram of the structure at position B proposed in

[0024] Figure 7 is a schematic structural diagram of the top fixing mechanism of a plastic and aesthetic device with a fixed maxillofacial structure proposed by the present invention.

[0025] In the accompanying drawings: 1. Fixed seat; 2. Support mechanism; 3. Positioning mechanism; 4. Side fixing mechanism; 5. Top fixing mechanism; 6. Support base; 7. Headrest; 8. Limiting plate; 9. Adjusting frame; 10. Adjusting block; 11. Threaded rod; 12. Turntable; 13. Support shaft; 14. Chute; 15. Positioning rail; 16. Positioning block; 17. Positioning shaft; 18. Positioning port; 19. Push rod; 20. Slide block; 21. Clamping plate; 22. Fixed block; 23. First spring; 24. Support block; 25. Support rod; 26. First rack; 27. Rotating rod; 28. First gear; 29. Second gear; 30. Second rack; 31. Push plate; 32. First airbag; 33. Support plate; 34. Air pipe; 35. Guide plate; 36. Guide port; 37. Guide block; 38. Second airbag; 39. Top plate; 40. Air cushion. Detailed implementation manner

[0026] Example 1, referring to Figures 1-6 , a plastic and aesthetic device with a fixed maxillofacial structure, including a fixed seat 1. A support mechanism 2 is arranged on the top of the fixed seat 1. A second spring is connected between the bottom of the support mechanism 2 and the top of the fixed seat 1 by bolts. A positioning mechanism 3 is arranged between the two sides of the bottom and the two sides of the top of the support mechanism 2. A side fixing mechanism 4 is arranged between the two sides of the top of the support mechanism 2 and the top of the fixed seat 1, which can effectively fix the maxillofacial surface of the patient according to the differences in the maxillofacial sizes of the patients, thereby improving the plastic and aesthetic effects of the patients and preventing the maxillofacial surface from shifting during fixation due to different maxillofacial sizes of the patients, thus affecting the plastic and aesthetic of the patients.

[0027] On the above basis, the support mechanism 2 includes a support base 6, a headrest 7, an adjusting frame 9, a threaded rod 11 and a turntable 12. The bottom of the adjusting frame 9 is connected to the top of the fixed seat 1 by bolts. The two opposite sides of the adjusting frame 9 are rotationally connected to the two ends of the threaded rod 11 through bearings. An adjusting block 10 is slidably connected to the inner wall of the adjusting frame 9. A threaded hole is opened through the top of the adjusting block 10, and the threaded hole is threadedly connected to the threaded rod 11. The bottom of the turntable 12 is welded to the top of the threaded rod 11. One side of the adjusting block 10 is connected to a support shaft 13 by bolts. The other side of the support shaft 13 is connected to the support base 6 by bolts. The bottom of the headrest 7 is connected to the top of the support base 6 by bolts. A recessed part is arranged on the top of the headrest 7, and a limiting plate 8 is connected to one side of the recessed part by bolts.

[0028] On the basis described above, the side fixing mechanism 4 includes clamping plates 21, a plurality of fixing blocks 22, a support block 24, a rotating rod 27, a first transmission assembly, a second transmission assembly and a support rod 25. The bottom of the support block 24 is bolted to the top of the support base 6. A rotational connection is formed between the support base 6 and the rotating rod 27 through a bearing. The rotating rod 27 is connected to the clamping plate 21 through the second transmission assembly. The bottom of the support rod 25 is bolted to the top of the support base 6. The support rod 25 is connected to the rotating rod 27 through the first transmission assembly. A first spring 23 is bolted between one side of the clamping plate 21 and the fixing block 22. There are differences in the distances between the plurality of fixing blocks 22 and the clamping plate 21. Sliding grooves 14 are formed on both sides of the top of the support base 6. The inner wall of the sliding groove 14 is slidably connected to a slider 20. The top of the slider 20 is fixedly connected to the bottom of the clamping plate 21.

[0029] On the basis described above, the first transmission assembly is composed of a first rack 26 and a first gear 28. The first rack 26 and the first gear 28 are meshed with each other. The first gear 28 is fixedly sleeved on the outer wall of the rotating rod 27. One side of the first rack 26 is bolted to the support rod 25. A notch is formed on one side of the support base 6. The notch is slidably connected to the support rod 25.

[0030] On the basis described above, the second transmission assembly is composed of a second gear 29 and a second rack 30. The second gear 29 and the second rack 30 are meshed with each other. One side of the second rack 30 is bolted to the clamping plate 21. The second gear 29 is fixedly sleeved on the outer wall of the rotating rod 27. The fixing block 22 acts on both sides of the patient's maxillofacial surface, so as to fix the patient's maxillofacial surface. Since the positions of the three fixing blocks 22 are different, and the size of the patient's maxillofacial surface gradually decreases from the head to the mandible, therefore, the fixing block 22 can effectively fix the patient's maxillofacial surface according to the difference in the size of the patient's maxillofacial surface, thereby improving the plastic and aesthetic effect of the patient, and preventing the maxillofacial surface from shifting during fixation due to different sizes of the patient's maxillofacial surface, thus affecting the plastic and aesthetic treatment of the patient.

[0031] On the basis described above, the positioning mechanism 3 is composed of two positioning rails 15 and two push rods 19. One of the positioning rails 15 is bolted to the bottom of the support base 6. The other positioning rail 15 is bolted to the top of the fixed base 1. The two sides of the inner walls of the two positioning rails 15 are slidably connected to positioning blocks 16. The two ends of the two push rods 19 are connected to the positioning blocks 16 through hinges. The two push rods 19 are cross-distributed. A rotational connection is formed between the two push rods 19 through a bearing.

[0032] On the basis described above, positioning ports 18 are formed through both opposite sides of the positioning rail 15. The inner wall of the positioning port 18 is slidably connected to a positioning shaft 17. One end of the positioning shaft 17 is welded to the positioning block 16.

[0033] Example 2. Refer to Figures 1-7 , a plastic and aesthetic device with a fixed maxillofacial structure. Compared with Example 1, on the basis of Example 1, a top fixing mechanism 5 is provided between the positioning mechanism 3 and the top of the support mechanism 2, and a cooperation is formed between the top fixing mechanism 5 and the support mechanism 2.

[0034] On the above basis, the top fixing mechanism 5 includes a support plate 33, a first airbag 32, a push plate 31, a guide plate 35, a second airbag 38, a top plate 39 and an air cushion 40. The bottom of the support plate 33 is fixedly connected to the top of the fixed seat 1. Both ends of the push plate 31 are welded to the two positioning shafts 17. The first airbag 32 is located between the push plate 31 and the support plate 33. The bottom of the guide plate 35 is bolted to the top of the support seat 6. A guide opening 36 is formed through one side of the guide plate 35. A guide block 37 is slidably connected to the inner wall of the guide opening 36. One side of the guide block 37 is fixedly connected to the top plate 39. The top of the air cushion 40 is adhesively bonded to the bottom of the top plate 39. The inside of the air cushion 40 is made of hollow material. The second airbag 38 is located between the top of the guide block 37 and the guide opening 36. A trachea 34 is provided between the first airbag 32 and the second airbag 38. The inflated second airbag 38 will push the top plate 39 downward, so that the air cushion 40 fixes the top of the patient's maxillofacial region. Through the cooperation between the top fixing mechanism 5 and the side fixing mechanism 4, the patient's maxillofacial region can be effectively fixed, so as to facilitate the plastic treatment of the patient and prevent the patient's maxillofacial region from shaking during the plastic treatment, thereby affecting the plastic treatment of the patient.

[0035] In summary, by means of the above technical solution of the present invention: when fixing the plastic surgery of a patient, the patient lies on the plastic surgery instrument, with the head resting on the headrest 7. The position of the patient's head is limited by the limiting plate 8, and the position of the patient's head is positioned by the concave portion of the headrest 7. At this time, rotate the turntable 12, and the turntable 12 will drive the headrest 7 to move downward, so as to facilitate the adjustment of the height of the patient's head for plastic surgery treatment. During the downward movement of the headrest 7, the first gear 28 will move downward with the downward movement of the headrest 7. At this time, through meshing, the first rack 26 drives the first gear 28 to rotate, and the rotating rod 27 drives the second gear 29 to rotate with the rotation of the first gear 28. At this time, through meshing, the second gear 29 drives the second rack 30 to move to one side. At this time, when the second rack 30 moves, it drives the clamp plate 21 to move, so that the fixing block 22 acts on both sides of the patient's jaw surface to facilitate the fixing of the patient's jaw surface. Since the positions of the three fixing blocks 22 are different and the size of the patient's jaw surface gradually decreases from the head to the lower jaw, the fixing block 22 can effectively fix the patient's jaw surface according to the difference in the size of the patient's jaw surface, thereby improving the plastic surgery effect of the patient and preventing the jaw surface from shifting during fixation due to different sizes of the patient's jaw surface, which may affect the plastic surgery of the patient. When the headrest 7 moves downward, the positioning mechanism 3 will move to both sides under the action of the pressure of the headrest 7. At this time, the push plate 31 will move with the movement of the positioning mechanism 3. When the push plate 31 moves, it squeezes the first airbag 32. At this time, the gas inside the first airbag 32 will be transported to the inside of the second airbag 38 through the air pipe 34 after being squeezed. The air pressure inside the second airbag 38 will increase with the input of the gas, and the second airbag 38 will bulge under the action of the air pressure. The bulging second airbag 38 will push the top plate 39 to move downward, so that the air cushion 40 fixes the top of the patient's jaw surface. Through the interaction between the top fixing mechanism 5 and the side fixing mechanism 4, the patient's jaw surface can be effectively fixed for plastic surgery treatment to prevent the patient's jaw surface from shaking during the plastic surgery treatment, which may affect the plastic surgery treatment of the patient.

[0036] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A cosmetic surgery device for fixing maxillofacial structures, comprising a fixing seat (1), characterized in that: A support mechanism (2) is arranged on the top of the fixing seat (1), and a second spring is connected between the bottom of the support mechanism (2) and the top of the fixing seat (1) via bolts; a positioning mechanism (3) is arranged between the two sides of the bottom of the support mechanism (2) and the two sides of the top; and a side fixing mechanism (4) is arranged between the two sides of the top of the support mechanism (2) and the top of the fixing seat (1).

2. A cosmetic surgery device with fixed maxillofacial structure according to claim 1, characterized in that: The support mechanism (2) comprises a support seat (6), a headrest (7), an adjustment frame (9), a threaded rod (11) and a rotating disk (12), wherein the bottom of the adjustment frame (9) is connected to the top of the fixed seat (1) by bolts, and the opposite sides of the adjustment frame (9) are rotatably connected to the two ends of the threaded rod (11) by bearings, and the inner wall of the adjustment frame (9) is slidably connected with an adjustment block (10), and a threaded hole is provided through the top of the adjustment block (10), and the threaded hole is threadedly connected to the threaded rod (11), and the bottom of the rotating disk (12) is welded to the top of the threaded rod (11), and one side of the adjustment block (10) is connected to a support shaft (13) by bolts, and the other side of the support shaft (13) is connected to the support seat (6) by bolts, and the bottom of the headrest (7) is connected to the top of the support seat (6) by bolts, and the top of the headrest (7) is provided with a recessed portion, and one side of the recessed portion is connected to a limiting plate (8) by bolts.

3. A cosmetic surgery device with fixed maxillofacial structure according to claim 2, characterized in that: The side fixing mechanism (4) comprises a clamping plate (21), a plurality of fixing blocks (22), a supporting block (24), a rotating rod (27), a first transmission assembly, a second transmission assembly and a supporting rod (25), wherein the bottom of the supporting block (24) is connected to the top of the supporting seat (6) by bolts, the supporting seat (6) and the rotating rod (27) are rotatably connected by a bearing, the rotating rod (27) and the clamping plate (21) are connected by the second transmission assembly, the bottom of the supporting rod (25) is connected to the top of the supporting seat (6) by a bolt, and the bottom of the supporting rod (25) is connected to the top of the supporting seat (6). The top is connected by bolts, the support rod (25) and the rotating rod (27) are connected by a first transmission assembly, a first spring (23) is connected between one side of the clamping plate (21) and the fixed block (22) by bolts, and there are differences in the spacing between the multiple fixed blocks (22) and the clamping plate (21), and sliding grooves (14) are provided on both sides of the top of the support seat (6), and a slider (20) is slidably connected to the inner wall of the sliding groove (14), and the top of the slider (20) is fixedly connected to the bottom of the clamping plate (21).

4. A cosmetic surgery device with fixed maxillofacial structure according to claim 3, characterized in that: The first transmission assembly is composed of a first rack (26) and a first gear (28), and the first rack (26) and the first gear (28) are meshed with each other. The first gear (28) is fixedly sleeved on the outer wall of the rotating rod (27). One side of the first rack (26) is connected to the support rod (25) by bolts. A notch is provided on one side of the support seat (6), and the notch is slidably connected to the support rod (25).

5. The cosmetic surgery device with fixed maxillofacial structure according to claim 3, characterized in that: The second transmission assembly consists of a second gear (29) and a second rack (30), and the second gear (29) and the second rack (30) are meshed with each other. One side of the second rack (30) is connected to the clamping plate (21) by bolts, and the second gear (29) is fixedly sleeved on the outer wall of the rotating rod (27).

6. The cosmetic surgery device with fixed maxillofacial structure according to claim 2, characterized in that: The positioning mechanism (3) is composed of two positioning rails (15) and two push rods (19), wherein one of the positioning rails (15) is connected to the bottom of the support seat (6) by bolts, and the other positioning rail (15) is connected to the top of the fixed seat (1) by bolts. Both sides of the inner walls of the two positioning rails (15) are slidably connected with positioning blocks (16), the two ends of the two push rods (19) are connected to the positioning blocks (16) by hinges, the two push rods (19) are cross-distributed, and the two push rods (19) are rotatably connected by bearings.

7. The cosmetic surgery device with fixed maxillofacial structure according to claim 6, characterized in that: The positioning rail (15) has positioning openings (18) formed on opposite sides thereof, and the inner wall of the positioning opening (18) is slidably connected with a positioning shaft (17), one end of which is welded to the positioning block (16).

8. The cosmetic surgery device with fixed maxillofacial structure according to claim 7, characterized in that: A top fixing mechanism (5) is provided between the positioning mechanism (3) and the top of the supporting mechanism (2), and the top fixing mechanism (5) and the supporting mechanism (2) are matched with each other.

9. The cosmetic surgery device with fixed maxillofacial structure according to claim 8, characterized in that: The top fixing mechanism (5) comprises a support plate (33), a first airbag (32), a push plate (31), a guide plate (35), a second airbag (38), a top plate (39) and an air cushion (40), wherein the bottom of the support plate (33) is fixedly connected to the top of the fixing seat (1), the two ends of the push plate (31) are welded to the two positioning shafts (17), the first airbag (32) is located between the push plate (31) and the support plate (33), and the bottom of the guide plate (35) is connected to the top of the support seat (6) by bolts. A guide opening (36) is formed on one side of the guide plate (35), a guide block (37) is slidably connected to the inner wall of the guide opening (36), one side of the guide block (37) is fixedly connected to the top plate (39), the top of the air cushion (40) is bonded to the bottom of the top plate (39), the interior of the air cushion (40) is made of a hollow material, the second air bag (38) is located between the top of the guide block (37) and the guide opening (36), and an air pipe (34) is provided between the first air bag (32) and the second air bag (38).

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