Prone position turning bed for critical patient

Abstract

The invention discloses a prone position turning-over bed for critical patients, and relates to the technical field of medical sickbeds, the prone position turning-over bed comprises two baffles, and the bottoms of the two baffles are each provided with two supporting legs; through the arrangement of a first spring, a plurality of segmented racks, a plurality of spring columns, a plurality of L-shaped wedge-shaped blocks, a U-shaped fixing plate, an L-shaped fixing plate, a second wedge-shaped block, a second spring, a cross block, a locking shaft, a plurality of cross-shaped grooves, a limiting rod and two sliding blocks, the second bed plate is locked by abutting against the correspondingly extending L-shaped wedge-shaped blocks; therefore, a linkage motor can drive a second bed plate and a third bed plate to synchronously rotate by 90 degrees to turn a patient onto the third bed plate, and the corresponding linkage gears are matched to move until the corresponding segmented racks are disengaged, so that the third bed plate automatically stops moving, the patient is prevented from being extruded due to excessive movement, and the safety of the patient is ensured; manual adjustment is not needed, and operation is easy, convenient and fast.

Description

Technical Field

[0001] The invention relates to the technical field of medical beds, in particular to a prone turning bed for critically ill patients. Background Art

[0002] Prone ventilation refers to placing the patient in a prone position and using gravity to expand the lungs to improve the ventilation-perfusion ratio and lung compliance. As a special ventilation method, it is mostly used clinically for critically ill patients, such as ARDS and severe pneumonia.

[0003] The invention patent with the patent number CN117084876A discloses a prone turning bed, including a bed frame, a main bed board, a secondary bed board, a lifting platform, a turning drive mechanism and a restraining fixture. The main bed board is arranged on the bed frame; the secondary bed board and the main bed board are arranged side by side and closely in the width direction of the bed frame; the lifting platform is arranged on the bed frame and below the main bed board; the turning drive mechanism is arranged on the bed frame and below the secondary bed board, which is used to drive the secondary bed board to turn 180° around a horizontal axis and switch between a first position and a second position; the restraining fixture is arranged on the secondary bed board to restrain and fix the patient on the secondary bed board; when the secondary bed board is in the first position, the secondary bed board and the main bed board are in the same plane, and when the secondary bed board is in the second position, the secondary bed board is located above the main bed board and parallel to the main bed board. The prone turning bed of the invention adopts electromechanical as the power to turn instead of the original manual turning, reduces the uncertainty factors brought by manpower, increases the turning experience of patients, and reduces the labor cost and burden.

[0004] The above-mentioned device uses electromechanical power to replace the original manual flipping, reducing the uncertainty factors brought by manpower. However, when turning over, the patient's entire body needs to be supported. Relying only on two restraint belts to fix the patient, the patient is not only prone to sliding, but also the small area of ​​fixation often causes the patient to be strangled at the fixation point, causing discomfort to the patient. In addition, there is a large difference in the body size of patients. When turning over from the initial bed surface to the target bed surface, the distance between the patient and the target bed surface is too large. When the patient is released, the patient will be thrown onto the target bed surface, which can easily worsen the condition of critically ill patients and even put the patient's life in danger. For fatter patients, it is easy to cause oppression on the patient and cause discomfort to the patient. Summary of the invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a prone turning bed for critically ill patients to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A prone turning bed for critically ill patients, comprising two baffles, two supporting legs are arranged at the bottom of the two baffles, a first motor is fixedly arranged on the side wall of one of the baffles, a first turning shaft is fixedly arranged on the end of the output shaft of the first motor, a first bed board is fixedly arranged on the end of the first turning shaft, a linkage mechanism is arranged on the side walls of the two baffles close to the first bed board, a third bed board is fixedly arranged between the two linkage mechanisms, a filling plate is arranged on one side wall of the third bed board, two supporting columns are arranged at the bottom of the filling plate, a triangular plate is arranged between the two baffles, two reset tension springs are fixedly arranged on the top of the triangular plate, locking mechanisms are slidably arranged on the side walls of the two baffles, a second bed board is arranged between the two locking mechanisms, a resistance mechanism is arranged on the top of the second bed board, two mounting plates are fixedly arranged between the two baffles, a reset mechanism is arranged on the top of one of the mounting plates, two supporting rods are fixedly arranged on the bottom of the two mounting plates, two consoles are arranged on the side wall of one of the baffles, and four control buttons are arranged on the top of the two consoles.

[0007] Preferably, the reset mechanism includes a cylinder, two reset grooves and a U-shaped plate, the cylinder is fixedly arranged on the top of one of the mounting plates, the U-shaped plate is fixedly arranged on the end of the cylinder output shaft, the two reset grooves are fixedly arranged on the bottom of the third bed board, and the U-shaped plate slides in the reset groove.

[0008] Preferably, the resistance mechanism comprises a plurality of resistance springs, a plurality of wedge plates, a plurality of first wedge blocks and a plurality of resistance columns, a plurality of the resistance springs are fixedly arranged on the second bed board, a plurality of the wedge plates are respectively fixedly arranged on the corresponding resistance springs, a plurality of the first wedge blocks are slidably arranged at both ends of the corresponding wedge plates, and a plurality of the resistance columns are respectively movably inserted at both ends of the second bed board.

[0009] Preferably, each of the linkage mechanisms includes a linkage motor, an L-shaped slide, a turntable, a fixed rod, a second motor, a linkage gear and a linkage rod. The two L-shaped slides are slidably arranged on the side walls of the bed board, the linkage motor is fixedly arranged between the two L-shaped slides, the turntable is fixedly arranged on the end of the linkage motor output shaft, the fixed rod is fixedly arranged on the turntable, the second motor is fixedly arranged on the end of the fixed rod, the linkage rod is fixedly arranged on the end of the second motor output shaft, and the linkage gear is fixedly arranged on the end of the second motor output shaft.

[0010] Preferably, each of the locking mechanisms comprises a plurality of first springs, a plurality of segmented racks, a plurality of spring columns, a plurality of L-shaped wedge blocks, a U-shaped fixing plate, an L-shaped fixing plate, a second wedge block, a second spring, a cross block, a locking shaft, a plurality of cross slots, a limiting rod and two sliding blocks, wherein the plurality of cross slots are arranged at both ends of the second bed board, the U-shaped fixing plate is fixedly arranged on the side wall of the bed board, the plurality of segmented racks are slidably arranged between the U-shaped fixing plates, the plurality of first springs are fixedly arranged on the corresponding side walls of the segmented racks, the plurality of spring columns are respectively inserted and arranged on the side walls of the U-shaped fixing plate, the plurality of L-shaped wedge blocks are fixedly arranged on the corresponding ends of the spring columns, the locking shaft is fixedly arranged on the side wall of the second wedge block, the second spring is sleeved on the locking shaft, the cross shaft is fixedly arranged on the end of the locking shaft, the limiting rod is rotatably arranged on the end of the locking shaft, the plurality of cross shafts are arranged at one end of the second bed board, the two sliding blocks are fixedly arranged on the side walls of the limiting rod, and the two ends of the L-shaped fixing plate are respectively fixedly arranged on the second bed board and the U-shaped fixing plate.

[0011] Preferably, the two locking shafts are respectively slidably matched with the corresponding linkage rods, and the two baffle side walls are both provided with sliding grooves for the L-shaped slide to slide.

[0012] Preferably, the four control buttons are respectively connected to the corresponding first motor, cylinder, linkage motor and second motor electrical signals.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The present invention realizes that the second bed board is locked by the arrangement of the first spring, a plurality of segmented racks, a plurality of spring columns, a plurality of L-shaped wedge blocks, a U-shaped fixing plate, an L-shaped fixing plate, a second wedge block, a second spring, a cross block, a locking shaft, a plurality of cross slots, a limiting rod and two sliding blocks, so that the second bed board is locked by the L-shaped wedge blocks that are extended out in a corresponding manner, so that the linkage motor can drive the second bed board and the third bed board to rotate synchronously by 90 degrees to flip the patient onto the third bed board, and cooperate with the corresponding linkage gear to move until the corresponding segmented rack is disengaged, so that the third bed board automatically stops moving, avoiding excessive movement and squeezing the patient, ensuring the safety of the patient, and no manual adjustment is required, the operation is simple, convenient and fast, and the arrangement of the conflicting spring, a plurality of wedge plates, a plurality of first wedge blocks and a plurality of conflicting columns also realizes that the corresponding wedge plate is automatically driven to move according to the patient's body shape, so that it can automatically adjust to different body shapes without measuring the patient's body shape, avoiding the third bed board from excessively pressing the patient, and also ensuring that the patient is not too far away from the target bed board, ensuring the comfort of the patient when turning over to the prone position;

[0015] (2) The present invention realizes reset without manual operation through the arrangement of the cylinder, two reset grooves and the U-shaped plate, has a high degree of automation, is easy to operate, and greatly reduces the workload of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the overall side structure of the present invention;

[0018] Figure 3 It is a schematic diagram of the structure of the conflict mechanism of the present invention;

[0019] Figure 4 It is a schematic diagram of the positional relationship between the linkage mechanism and the locking mechanism of the present invention;

[0020] Figure 5 It is a partial structural schematic diagram of the locking mechanism of the present invention;

[0021] Figure 6 It is a schematic diagram of the reset mechanism structure of the present invention.

[0022] In the figure: 1, first bed board; 2, second bed board; 3, third bed board; 4, linkage mechanism; 41, linkage motor; 42, L-shaped slide plate; 43, turntable; 44, fixed rod; 45, second motor; 46, linkage gear; 47, linkage rod; 5, locking mechanism; 51, first spring; 52, segmented rack; 53, spring column; 54, L-shaped wedge block; 55, U-shaped fixing plate; 56, L-shaped fixing plate; 57, second wedge block; 58, second spring; 59, cross block; 510, locking shaft; 5 11. Cross slot; 512. Limit rod; 513. Slider; 6. Interference mechanism; 61. Interference spring; 62. Wedge plate; 63. First wedge block; 64. Interference column; 7. Reset mechanism; 71. Cylinder; 72. Reset slot; 73. U-shaped plate; 8. First flip axis; 9. Control button; 10. Control console; 11. Baffle; 12. Mounting plate; 13. Support leg; 14. First motor; 15. Triangle plate; 16. Reset spring; 17. Support column; 18. Support rod; 19. Filler plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-6An embodiment of the present invention is as follows: a prone turning bed for critically ill patients, comprising two baffles 11, two supporting legs 13 are arranged at the bottom of the two baffles 11, a first motor 14 is fixedly arranged on the side wall of one of the baffles 11, a first turning shaft 8 is fixedly arranged on the end of the output shaft of the first motor 14, a first bed board 1 is fixedly arranged on the end of the first turning shaft 8, a linkage mechanism 4 is arranged on the side walls of the two baffles 11 close to the first bed board 1, a third bed board 3 is fixedly arranged between the two linkage mechanisms 4, a filling plate 19 is arranged on one side wall of the third bed board 3, and two supporting columns 1 are arranged at the bottom of the filling plate 19. 7. A triangular plate 15 is arranged between the two baffles 11, and two reset tension springs 16 are fixedly arranged on the top of the triangular plate 15. The side walls of the two baffles 11 are slidably provided with locking mechanisms 5. A second bed board 2 is arranged between the two locking mechanisms 5, and a resistance mechanism 6 is arranged on the top of the second bed board 2. Two mounting plates 12 are fixedly arranged between the two baffles 11, and a reset mechanism 7 is arranged on the top of one of the mounting plates 12. Two support rods 18 are fixedly arranged on the bottom of the two mounting plates 12. Two consoles 10 are arranged on the side wall of one of the baffles 11, and four control buttons 9 are arranged on the top of the two consoles 10. First, one arm of the critically ill patient is pressed against the outside of the first bed board 1, and then the medical staff controls it through the control button 9 on the console 10, and drives the third bed board 3 to flip 90 degrees through the linkage mechanism 4, and then drives the first flip shaft 8 to rotate through the output shaft of the first motor 14, and the first flip shaft 8 rotates to drive the first bed board 1 to rotate, and the first bed board 1 flips the patient to the side and presses it on the second bed board 2, and presses the resistance mechanism 6 through the patient's body shape, driving the resistance mechanism 6 to work, and then drives the locking mechanism 5 to move through the linkage mechanism 4, and the linkage mechanism 4 drives the third bed board 3 to move synchronously until the third bed board 3 moves to the position where the resistance mechanism 6 is resisted, and then the locking mechanism 5 is resisted by the resistance mechanism 6, so that the locking mechanism 5 is locked with the second bed board 2, and at this time, the third bed board 3 and the second bed board 2 are driven to flip 90 degrees in the opposite direction through the linkage mechanism 4, and then the linkage mechanism 4 drives the second bed board 2 to move up to the locking mechanism 5 and unlock the second bed board 2, and then the second bed board 2 is driven to reset through the reset tension spring 16, and the third bed board 3 is driven to reset through the reset mechanism 7.

[0025] Specifically, the reset mechanism 7 includes a cylinder 71, two reset grooves 72 and a U-shaped plate 73. The cylinder 71 is fixedly arranged on the top of one of the mounting plates 12, the U-shaped plate 73 is fixedly arranged at the end of the output shaft of the cylinder 71, the two reset grooves 72 are fixedly arranged at the bottom of the third bed board 3, and the U-shaped plate 73 slides in the reset grooves 72. The output shaft of the cylinder 71 extends to drive the U-shaped plate 73 to move. When the U-shaped plate 73 moves to engage with the reset groove 72, the output shaft of the cylinder 71 contracts to drive the third bed board 3 to reset. Reset without manual operation is realized, with high automation and convenient operation.

[0026] Specifically, the interference mechanism 6 includes a plurality of interference springs 61, a plurality of wedge plates 62, a plurality of first wedge blocks 63 and a plurality of interference columns 64. The plurality of interference springs 61 are fixedly arranged on the second bed board 2, the plurality of wedge plates 62 are respectively fixedly arranged on the corresponding interference springs 61, the plurality of first wedge blocks 63 are slidably arranged at both ends of the corresponding wedge plates 62, and the plurality of interference columns 64 are respectively movably inserted at both ends of the second bed board 2. The patient presses the corresponding number of wedge plates 62 sideways, so that the wedge plates 62 move downward, and the downward movement of the wedge plates 62 drives the first wedge blocks 63 to move toward the two ends of the second bed board 2, and the movement of the first wedge blocks 63 drives the interference columns 64 to move synchronously; the corresponding wedge plates 62 are automatically driven to move according to the patient's body shape, so that the patient can automatically adjust to different body shapes without measuring the patient's body shape.

[0027] Specifically, each linkage mechanism 4 includes a linkage motor 41, an L-shaped slide 42, a turntable 43, a fixed rod 44, a second motor 45, a linkage gear 46 and a linkage rod 47. The two L-shaped slides 42 are slidably arranged on the side walls of the bed board. The linkage motor 41 is fixedly arranged between the two L-shaped slides 42. The turntable 43 is fixedly arranged at the end of the output shaft of the linkage motor 41. The fixed rod 44 is fixedly arranged on the turntable 43. The second motor 45 is fixedly arranged at the end of the fixed rod 44. The linkage rod 47 is fixedly arranged at the end of the output shaft of the second motor 45. The linkage gear 46 is fixedly arranged at the end of the output shaft of the second motor 45. The turntable 43 and the fixed rod 44 are driven to rotate synchronously by the rotation of the output shaft of the linkage motor 41. The rotation of the fixed rod 44 drives the second motor 45 and the third bed board 3 to move synchronously. The linkage gear 46 is driven to rotate by the rotation of the output shaft of the second motor 45.

[0028] Specifically, each of the locking mechanisms 5 includes a plurality of first springs 51, a plurality of segmented racks 52, a plurality of spring columns 53, a plurality of L-shaped wedge blocks 54, a U-shaped fixing plate 55, an L-shaped fixing plate 56, a second wedge block 57, a second spring 58, a cross block 59, a locking shaft 510, a plurality of cross slots 511, a limiting rod 512 and two sliders 513, wherein the plurality of cross slots 511 are arranged at both ends of the second bed board 2, the U-shaped fixing plate 55 is fixedly arranged on the side wall of the bed board, the plurality of segmented racks 52 are slidably arranged between the U-shaped fixing plates 55, and the plurality of first springs 51 are fixedly arranged on the side walls of the corresponding segmented racks 52 , several of the spring columns 53 are respectively inserted and set on the side walls of the U-shaped fixing plate 55, several of the L-shaped wedge blocks 54 are fixedly set on the corresponding ends of the spring columns 53, the locking shaft 510 is fixedly set on the side wall of the second wedge block 57, the second spring 58 is sleeved on the locking shaft 510, the cross shaft is fixedly set on the end of the locking shaft 510, the limiting rod 512 is rotatably set on the end of the locking shaft 510, several of the cross shafts are set at one end of the second bed board 2, two of the sliders 513 are fixedly set on the side walls of the limiting rod 512, and the two ends of the L-shaped fixing plate 56 are respectively fixedly set on the second bed board 2 and the U-shaped fixing plate 55. The corresponding segmented rack 52 is driven to move by the movement of the corresponding interference column 64, and the movement of the segmented rack 52 drives the corresponding spring column 53 and the L-shaped wedge block 54 to move synchronously. The second wedge block 57 contacts the corresponding L-shaped wedge block 54, so that the locking shaft 510 moves toward the second bed board 2. The movement of the locking shaft 510 drives the cross block 59 to move synchronously, and the cross block 59 is engaged with the corresponding cross shaft; the second bed board 2 is locked by the corresponding L-shaped wedge block 54 extending out, so that the linkage motor 41 can drive the second bed board 2 and the third bed board 3 to rotate synchronously by ninety degrees to flip the patient onto the third bed board 3, and cooperate with the corresponding linkage gear 46 to move until the corresponding segmented rack 52 is disengaged, so that the third bed board 3 automatically stops moving, avoids excessive movement and squeezing the patient, and ensures the safety of the patient. No manual adjustment is required, and the operation is simple, convenient and fast.

[0029] Specifically, the two locking shafts 510 are respectively slidably matched with the corresponding linkage rods 47, and the side walls of the two baffles 11 are both provided with sliding grooves for the L-shaped slide plate 42 to slide.

[0030] Specifically, the four control buttons 9 are respectively connected to the corresponding first motor 14, cylinder 71, linkage motor 41 and second motor 45 via electrical signals.

[0031] Working principle: First, one arm of the critically ill patient is placed against the outside of the first bed board 1, and then the medical staff controls it through the control button 9 on the console 10, and the output shaft of the linkage motor 41 rotates to drive the turntable 43 and the fixed rod 44 to rotate synchronously, and the rotation of the fixed rod 44 drives the second motor 45 and the third bed board 3 to move synchronously, and the output shaft of the second motor 45 rotates to drive the linkage gear 46 to rotate and drive the third bed board 3 to flip 90 degrees, and then the output shaft of the first motor 14 rotates to drive the first flip shaft 8 to rotate, and the rotation of the first flip shaft 8 drives the third bed board 3 to flip 90 degrees. One bed board 1 rotates, and the first bed board 1 turns the patient over to press the patient sideways on the second bed board 2. The patient presses the corresponding number of wedge plates 62 sideways, so that the wedge plates 62 move downward, and the wedge plates 62 move downward to drive the first wedge blocks 63 to move toward the two ends of the second bed board 2. The movement of the first wedge blocks 63 drives the contact columns 64 to move synchronously, and the movement of the contact columns 64 drives the corresponding segmented racks 52 to move, and the movement of the segmented racks 52 drives the corresponding spring columns 53 and the L-shaped wedge blocks 54 to move synchronously, and then the output shaft of the second motor 45 rotates to drive the linkage gear 46 rotates, and the linkage gear 46 meshes with the segmented rack 52, so that the third bed board 3 moves toward the second bed board 2, until the third bed board 3 moves to the position where the segmented rack 52 is abutted, and the second wedge block 57 abuts against the corresponding L-shaped wedge block 54, so that the locking shaft 510 moves toward the second bed board 2, and the movement of the locking shaft 510 drives the cross block 59 to move synchronously, and the cross block 59 is engaged with the corresponding cross shaft, so that the third bed board 3 stops moving, and at this time, the locking mechanism 5 is abutted by the abutting mechanism 6, so that the locking mechanism 5 is locked with the second bed board 2. At this time, the third bed board 3 and the second bed board 2 are turned in the opposite direction by 90 degrees through the rotation of the output shaft of the linkage motor 41. Then, the U-shaped plate 73 is driven to move by the extension of the output shaft of the cylinder 71. After the U-shaped plate 73 moves to engage with the reset groove 72, the output shaft of the second motor 45 is rotated in the opposite direction, thereby driving the second bed board 2 to move up until the linkage gear 46 is disengaged from the segmented rack 52. Then, the third bed board 3 is reset by the contraction of the output shaft of the cylinder 71, and then the second bed board 2 is reset by the reset tension spring 16.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prone turning bed for critically ill patients, comprising two baffles (11), the bottom of each of the two baffles (11) being provided with two supporting legs (13), characterized in that: A first motor (14) is fixedly arranged on a side wall of one of the baffles (11); a first flip shaft (8) is fixedly arranged on the end of the output shaft of the first motor (14); a first bed board (1) is fixedly arranged on the end of the first flip shaft (8); a linkage mechanism (4) is provided on the side walls of the two baffles (11) close to the first bed board (1); a third bed board (3) is fixedly arranged between the two linkage mechanisms (4); a filling plate (19) is provided on one side wall of the third bed board (3); two supporting columns (17) are provided at the bottom of the filling plate (19); a triangular plate (15) is provided between the two baffles (11); the top of the triangular plate (15) is provided with a support column (17); Two reset tension springs (16) are fixedly arranged on the side walls of the two baffles (11), locking mechanisms (5) are slidably arranged on the side walls of the two baffles (11), a second bed board (2) is arranged between the two locking mechanisms (5), a resistance mechanism (6) is arranged on the top of the second bed board (2), two mounting plates (12) are fixedly arranged between the two baffles (11), a reset mechanism (7) is arranged on the top of one of the mounting plates (12), two support rods (18) are fixedly arranged on the bottom of the two mounting plates (12), two control consoles (10) are arranged on the side walls of one of the baffles (11), and four control buttons (9) are arranged on the top of the two control consoles (10).

2. A prone turning bed for critically ill patients according to claim 1, characterized in that: The reset mechanism (7) comprises a cylinder (71), two reset grooves (72) and a U-shaped plate (73); the cylinder (71) is fixedly arranged on the top of one of the mounting plates (12); the U-shaped plate (73) is fixedly arranged on the end of the output shaft of the cylinder (71); the two reset grooves (72) are fixedly arranged on the bottom of the third bed plate (3); and the U-shaped plate (73) is located in the reset grooves (72) and slides.

3. A prone turning bed for critically ill patients according to claim 1, characterized in that: The resistance mechanism (6) comprises a plurality of resistance springs (61), a plurality of wedge plates (62), a plurality of first wedge blocks (63) and a plurality of resistance columns (64); the plurality of resistance springs (61) are fixedly arranged on the second bed board (2); the plurality of wedge plates (62) are respectively fixedly arranged on the corresponding resistance springs (61); the plurality of first wedge blocks (63) are slidably arranged at both ends of the corresponding wedge plates (62); and the plurality of resistance columns (64) are respectively movably inserted at both ends of the second bed board (2).

4. A prone turning bed for critically ill patients according to claim 2, characterized in that: Each linkage mechanism (4) comprises a linkage motor (41), an L-shaped slide plate (42), a rotating disk (43), a fixing rod (44), a second motor (45), a linkage gear (46) and a linkage rod (47); the two L-shaped slide plates (42) are slidably arranged on the side walls of the bed board; the linkage motor (41) is fixedly arranged between the two L-shaped slide plates (42); the rotating disk (43) is fixedly arranged on the end of the output shaft of the linkage motor (41); the fixing rod (44) is fixedly arranged on the rotating disk (43); the second motor (45) is fixedly arranged on the end of the fixing rod (44); the linkage rod (47) is fixedly arranged on the end of the output shaft of the second motor (45); and the linkage gear (46) is fixedly arranged on the end of the output shaft of the second motor (45).

5. A prone turning bed for critically ill patients according to claim 4, characterized in that: Each of the locking mechanisms (5) comprises a plurality of first springs (51), a plurality of segmented racks (52), a plurality of spring columns (53), a plurality of L-shaped wedge blocks (54), a U-shaped fixing plate (55), an L-shaped fixing plate (56), a second wedge block (57), a second spring (58), a cross block (59), a locking shaft (510), a plurality of cross slots (511), a limiting rod (512) and two sliding blocks (513), wherein the plurality of cross slots (511) are arranged at both ends of the second bed board (2), the U-shaped fixing plate (55) is fixedly arranged on the side wall of the bed board, the plurality of segmented racks (52) are slidably arranged between the U-shaped fixing plates (55), and the plurality of first springs (51) are fixedly arranged on the corresponding segmented racks (52). The second bed plate (55) has a plurality of spring columns (53) which are respectively inserted and arranged on the side wall of the U-shaped fixing plate (55); the plurality of L-shaped wedge blocks (54) are fixedly arranged on the ends of the corresponding spring columns (53); the locking shaft (510) is fixedly arranged on the side wall of the second wedge block (57); the second spring (58) is sleeved on the locking shaft (510); the cross shaft is fixedly arranged on the end of the locking shaft (510); the limiting rod (512) is rotatably arranged on the end of the locking shaft (510); the plurality of cross shafts are arranged on one end of the second bed plate (2); the two sliding blocks (513) are fixedly arranged on the side wall of the limiting rod (512); and the two ends of the L-shaped fixing plate (56) are respectively fixedly arranged on the second bed plate (2) and the U-shaped fixing plate (55).

6. A prone turning bed for critically ill patients according to claim 5, characterized in that: The two locking shafts (510) are respectively slidably matched with corresponding linkage rods (47) in a limited manner, and the side walls of the two baffles (11) are both provided with sliding grooves for the L-shaped slide plate (42) to slide.

7. A prone turning bed for critically ill patients according to claim 4, characterized in that: The four control buttons (9) are respectively connected to the corresponding first motor (14), cylinder (71), linkage motor (41) and second motor (45) via electrical signals.

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