CN112076035A

CN112076035A - Nursing bed

Info

Publication number: CN112076035A
Application number: CN202010977752.9A
Authority: CN
Inventors: 赵阳宇; 傅承宪
Original assignee: Zhejiang Yingluohua Rehabilitation Equipment Co ltd
Current assignee: ZHEJIANG YINGLUOHUA REHABILITATION EQUIPMENT Co.,Ltd.
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2020-12-15

Abstract

The invention relates to a nursing bed. A nursing bed comprises a bed frame, wherein a mattress is arranged on the upper side of the bed frame, the mattress comprises a back cushion, a fixing cushion, a thigh supporting cushion and a shank supporting cushion, one end of the back cushion is rotatably fixed with the fixing cushion, one end of the thigh supporting cushion is rotatably fixed with the fixing cushion, the shank supporting cushion is rotatably fixed with the other end of the thigh supporting cushion, the fixing cushion is fixed with a mattress frame, the mattress frame is horizontally rotatably supported and connected onto the bed frame around a vertical axis, and the shank supporting cushion is connected with a leg supporting driving mechanism for enabling the shank supporting cushion to turn over. The invention has the advantages of less using and operating steps, higher using comfort level and more stable mattress which is not easy to incline when in use.

Description

Nursing bed

Technical Field

The invention relates to a nursing bed.

Background

The chinese patent with application number 201910094822.3 discloses a nursing bed, the bed board of nursing bed includes preceding bed board, well bed board and back bed board, and preceding bed board is equipped with anterior electric putter, and well bed board is equipped with middle part electric putter, and back bed board is equipped with rear portion electric putter, and well bed board collocation has rotating electrical machines. When a patient on the nursing bed needs to be moved to a wheelchair or other mobile equipment, the front end of the front bed plate is tilted upwards, the rear end of the middle bed plate is tilted upwards, the rear end of the rear bed plate is tilted downwards, the hip of the patient is positioned at the connecting position of the front bed plate and the middle bed plate, and the comfort degree of the patient is poor; and then the middle bed board rotates, the front bed board continuously tilts upwards to enable the front bed board to be vertically arranged, the middle bed board is horizontally arranged, the rear bed board continuously turns downwards to enable the rear bed board to be vertically arranged, and finally the patient stands and moves to the mobile equipment with the help of other persons.

The nursing bed has the following defects: firstly, the use is troublesome, the operation steps are more, and more programs and control buttons need to be designed; secondly, the comfort level of the patient is poor in the process of changing the bed board from the flat lying type to the sitting type; when the bed board changes into sitting posture, middle part electric putter and rear portion electric putter occupation space are more for the distance between bed board and the bed body support of below is longer, and the support effect of bed board is relatively poor.

Disclosure of Invention

The invention aims to provide a nursing bed which has fewer using operation steps and higher using comfort.

In order to achieve the purpose, the invention adopts the following technical scheme: a nursing bed comprises a bed frame, wherein a mattress is arranged on the upper side of the bed frame, the mattress comprises a back cushion, a fixing cushion, a thigh supporting cushion and a shank supporting cushion, one end of the back cushion is rotatably fixed with the fixing cushion, one end of the thigh supporting cushion is rotatably fixed with the fixing cushion, the shank supporting cushion is rotatably fixed with the other end of the thigh supporting cushion, the fixing cushion is fixed with a mattress frame, the mattress frame is horizontally rotatably supported and connected onto the bed frame around a vertical axis, and the shank supporting cushion is connected with a leg supporting driving mechanism for enabling the shank supporting cushion to turn over.

When the nursing bed is used, namely, when the mattress is changed from a flat lying type to a backrest semi-lying type, the backrest cushion is upwarped to lift the back of a user, meanwhile, the crus support cushion is overturned under the action of the leg support driving mechanism to avoid the bed tail plate, the buttocks of the user are supported above the fixed cushion, the buttocks of the user are supported, and the comfort level is higher; when the mattress is changed from a backrest semi-lying type to a sitting type, the backrest semi-lying type continues to be tilted upwards to enable the backrest to be perpendicular to or close to perpendicular to the fixed cushion, meanwhile, the mattress frame drives the mattress to rotate to enable the shank supporting cushion to move to the side of the bed frame, one end, away from the thigh supporting cushion, of the shank supporting cushion is turned downwards under the action of the shank supporting driving mechanism to enable the shank supporting cushion to lean against the side face of the bed frame to enable the shank supporting cushion to be perpendicular to or close to perpendicular to the fixed cushion, at the moment, the backrest of a user is arranged on the backrest, meanwhile, the shank hangs down, the feet of the user can be in contact with the ground only by being held up by medical staff, and.

When the invention is used, the turning operation steps of the mattress are less, the control program and the corresponding button arrangement are less, the production cost is reduced, and the use is convenient. The invention can support the buttocks of a user, is more in line with human mechanics and can improve the comfort level when in use. Meanwhile, only the leg support driving mechanism is used for enabling the shank support cushion to be downwards turned to the side of the bed frame, the number of the driving mechanisms is less, the height space between the bed frame and the bed frame can be smaller, the stability of the bed frame is better, and the mattress frame is not prone to inclining and shaking.

Preferably, one end, far away from the thigh supporting pad, of the shank supporting pad is rotatably fixed with one end of the connecting rod, the other end of the connecting rod is linked with the leg support driving mechanism, the leg support driving mechanism comprises a first linear telescopic mechanism, one end of the first linear telescopic mechanism is rotatably fixed with the mattress frame, and the other end of the connecting rod is rotatably fixed with the mattress frame and is linked with the other end of the first linear telescopic mechanism; the first linear telescopic mechanism is positioned at the lower side of the thigh supporting pad, and the connecting rod is positioned at the lower side of the shank supporting pad.

The invention can realize the upwarping of the thigh supporting pad and the downward turning of the shank supporting pad only by adopting the leg support driving mechanism, has fewer operation steps and occupies less space. When the first linear telescopic mechanism extends outwards, the connecting end of the connecting rod and the first linear telescopic mechanism moves and enables the upper end of the connecting rod to turn over, so that the shank support pad is lifted; when the mattress rotates to enable the shank support pad to move to the side of the bedstead, the first linear telescopic mechanism retracts inwards to enable the shank support pad to turn downwards. The movement of the shank support cushion is driven by the first linear telescopic mechanism, so that the operation steps are few, the program design is convenient, and the use is more convenient. And the connecting rod can be used for supporting the raised shank cushion and the raised thigh cushion so as to adjust and keep the motion of the legs of the user and facilitate nursing.

Preferably, two opposite sides of one end of the shank support pad, which is far away from the thigh support pad, are respectively and rotatably fixed with one end of a connecting rod, the other ends of the two connecting rods are rotatably fixed with the mattress frame, and the distance between the two connecting rods is gradually increased from the side of the mattress frame to the side of the shank support pad; the shank support pad is provided with a containing groove with a downward opening, and one end of the connecting rod is positioned in the containing groove and is rotatably fixed with the wall of the containing groove; and a limiting block is arranged on the lower side of one end, close to the shank supporting pad, of the thigh supporting pad.

The width of the mattress frame can be narrower due to the arrangement, and the mattress frame does not need to be as wide as a mattress, so that the weight of the mattress frame is reduced, and the mattress frame can rotate conveniently. Wherein, the setting of holding tank can be used for hiding the connecting rod to save space. The limiting block is used for limiting the rotation of the lower leg support cushion relative to the thigh support cushion so as to avoid the excessive rotation of the lower leg support cushion.

Preferably, the backrest cushion is connected with a backrest driving mechanism capable of driving the backrest cushion to be tilted upwards or horizontally placed; the backrest driving mechanism comprises a second linear telescopic mechanism, one end of the second linear telescopic mechanism is rotatably fixed with the mattress frame, and the other end of the second linear telescopic mechanism is rotatably fixed on the back cushion back side. The backrest driving mechanism is used for overturning the backrest cushion, so that the backrest cushion is not required to be overturned by manpower, and the working strength of medical personnel can be reduced. Wherein, the second straight line telescopic machanism can select electric putter.

Preferably, the bedstead is connected to the upper side of the underframe through a bedstead lifting mechanism, and a bedstead driving mechanism for driving the bedstead lifting mechanism to lift is arranged between the bedstead and the underframe; the bedstead lifting mechanism comprises a plurality of folding connecting rods, each folding connecting rod is composed of an upper connecting rod and a lower connecting rod, the upper end of each upper connecting rod is rotatably fixed with the bedstead, the lower end of each lower connecting rod is rotatably fixed with the underframe, the lower end of each upper connecting rod is rotatably fixed with the upper end of each lower connecting rod, and the bedstead driving mechanism is used for enabling the upper ends of the upper connecting rods to rotate around the upper ends of the upper connecting rods or enabling the lower ends of the lower connecting rods to rotate around the lower ends of the lower.

The bed frame driving mechanism is used for realizing the lifting of the bed frame, so that the height of the mattress frame and the height of the mattress can be adjusted, and the nursing bed can be used for users with different heights. Meanwhile, the bed frame of the folding bed can be lifted and can also be used for assisting a user sitting on the bed edge to stand so as to facilitate the movement of the user by medical staff. The nursing bed is provided with the plurality of folding connecting rods, so that the bed frame cannot move forwards, backwards, leftwards and rightwards when ascending and descending, the stability of the mattress frame on the bed frame is higher, and the comfort degree of a user during use can be ensured.

Preferably, the bedstead lifting mechanism further comprises a swing rod, one end of the swing rod is a fixed end and is linked with the bedstead driving mechanism, the other end of the swing rod is a movable end and can rotate by taking the fixed end as a center, the movable end of the swing rod is linked with the linkage rod, and the end part of the linkage rod is linked with the folding connecting rod. The bedstead driving mechanism is not directly connected with the folding connecting rod, and the rotating angle of the upper connecting rod and the lower connecting rod of the folding connecting rod is larger, so that the lifting amplitude of the bedstead is larger.

Preferably, a rotating rod capable of rotating around the axis of the rotating rod is fixed on the bedstead or the underframe, the fixed end of the oscillating rod is fixed with the rotating rod, the bedstead driving mechanism is linked to enable the rotating rod to rotate, the oscillating rod is vertically arranged, and the rotating rod is transversely arranged; the bedstead driving mechanism linkage comprises a third linear telescopic mechanism, one end of the third linear telescopic mechanism is rotatably fixed with the bedstead or the underframe, the other end of the third linear telescopic mechanism is rotatably fixed with one end of the extension rod, and the other end of the extension rod is fixed with the rotating rod; the joint of the lower end of the upper connecting rod and the upper end of the lower connecting rod is rotatably fixed with one end of the linkage rod, and the other end of the linkage rod is rotatably fixed with the movable end of the oscillating rod. The rotating rod, the swinging rod, the folding connecting rod and the bedstead or the underframe form a connecting rod structure, and the transmission is more stable.

Preferably, the folding connecting rods comprise a first left folding connecting rod, a first right folding connecting rod, a second left folding connecting rod and a second right folding connecting rod, the first left folding connecting rod and the first right folding connecting rod are respectively arranged between the left side and the right side of the front section of the underframe and the left side and the right side of the front section of the bedstead, the second left folding connecting rod and the second right folding connecting rod are respectively arranged between the left side and the right side of the rear section of the underframe and the left side and the right side of the rear section of the bedstead, each swing rod comprises a first swing rod and a second swing rod which are opposite from left to right or opposite from front to back, a linkage rod is connected between the first swing rod and the first left folding connecting rod, and a linkage rod is connected between the second; the upper connecting rod and the lower connecting rod of the folding connecting rod are connected through a hinge shaft arranged along the left-right direction, the first swing rod and the second swing rod are oppositely arranged left and right, and the bedstead driving mechanism comprises a third linear telescopic mechanism arranged along the front-back direction.

The folding connecting rod comprises a first left folding connecting rod, a first right folding connecting rod, a second left folding connecting rod and a second right folding connecting rod, so that the support of the bed frame is more stable, the edges of the periphery of the bed frame are not easy to collapse, the mattress is not easy to incline, and a user can lie conveniently. The first swing rod and the second swing rod are respectively linked with a folding connecting rod, one swing rod is only linked with one folding connecting rod, the stability of the bedstead during ascending and descending is better, and the clamping condition is not easy to occur. The direction of using head of a bed and tailstock is the fore-and-aft direction, and the last connecting rod of folding connecting rod is connected through the articulated shaft that sets up along left right direction with lower connecting rod, and side about folding connecting rod can not extend the bedstead, can not lead to the fact the interference to putting down of shank support pad, can not also lead to the fact the interference to the structure setting of bedstead and chassis.

Preferably, a plurality of obliquely arranged support rods are connected between the bedstead and the underframe, the upper ends of the support rods are rotatably fixed with the bedstead, and the lower ends of the support rods are rotatably fixed with the underframe; the upper end rotating center of the support rod is coaxial with the upper end rotating center of an upper connecting rod of one folding connecting rod, and the lower end rotating center of the support rod is coaxial with the lower end rotating center of a lower connecting rod of the other folding connecting rod.

The support rods are used for supporting the bed frame above the underframe, the overall structural stability of the nursing bed can be improved, and meanwhile, when the upper connecting rod and the lower connecting rod of the folding connecting rod are folded, the overall structural strength of the nursing bed cannot be changed, so that the nursing bed has better use stability.

Preferably, the bedstead is provided with a circular ring-shaped track which is coaxial with the rotating vertical axis of the mattress frame and corresponds to the lower part of the mattress frame, and a plurality of rolling mechanisms which are arranged at intervals in a circular manner and can roll in the circular track are arranged below the mattress frame; a foot pad is arranged above the bed tail of the bed frame, and is flush with the mattress when the mattress is in a lying state; the two sides of the middle part of the mattress frame are provided with handrails. Wherein, support the mattress frame through ring shape track and rolling mechanism, can avoid mattress frame skew vertical axis department to take place to rock to make mattress frame's use more steady. Wherein, the callus on the sole sets up on the bedstead, when needs carry out the mattress frame and rotate, the mattress shifts to sitting posture state to make the bed shank hold in the palm the pad and can not touch the callus on the sole. The handrail is arranged on the mattress frame, and the handrail does not need to be firstly put flat before the mattress frame rotates, so that the rotation of the mattress frame is more convenient; meanwhile, the armrests rotate along with the mattress frame, so that a user on the mattress can be protected, and the user is prevented from turning over and separating from the mattress when the mattress frame rotates.

The invention has the advantages of less using and operating steps, higher using comfort level and more stable mattress which is not easy to incline when in use.

Drawings

FIG. 1 is a schematic view of a nursing bed according to the present invention;

FIG. 2 is a schematic view of a mattress frame and mattress according to the present invention;

FIG. 3 is a schematic view of a rotating mattress of the nursing bed of the present invention;

FIG. 4 is a schematic view of the leg rest drive mechanism of the present invention shown retracted;

FIG. 5 is a schematic view of the leg rest drive mechanism of the present invention shown retracted to an extreme position;

fig. 6 is a schematic structural view of the bed frame lifting mechanism and the bed frame driving mechanism of the present invention.

Detailed Description

The invention is further described below with reference to the figures and specific embodiments.

As shown in fig. 1 to 5, the present embodiment discloses a nursing bed, which includes a bed frame 1, a mattress is disposed on the upper side of the bed frame 1, the mattress includes a backrest pad 21, a fixing pad 22, a thigh supporting pad 23 and a shank supporting pad 24, the rear end of the backrest pad 21 is rotatably fixed to the fixing pad 22, the front end of the thigh supporting pad 23 is rotatably fixed to the fixing pad 22, the shank supporting pad 24 is rotatably fixed to the rear end of the thigh supporting pad 23, the fixing pad 22 is fixed to a mattress frame 2, the mattress frame 2 is supported and connected to the bed frame 1 in a manner of being horizontally rotatable around a vertical axis, and the shank supporting pad 24 is connected to a shank supporting driving mechanism for turning over the shank supporting pad 24. Wherein, the distance between the joint of the shank pad 24 and the thigh pad 23 and the vertical axis is greater than the distance between the left or right edge of the bed frame and the vertical axis, so that the joint of the shank pad 24 and the thigh pad 23 is positioned at the side of the bed frame 1 after the bed frame 1 rotates by 90 °.

One end, far away from the thigh supporting pad 23, of the shank supporting pad 24 is rotatably fixed with one end of the connecting rod 25, the other end of the connecting rod 25 is linked with the leg support driving mechanism, the leg support driving mechanism comprises a first linear telescopic mechanism 20, one end of the first linear telescopic mechanism 20 is rotatably fixed with the mattress frame 2 and is positioned at the lower sides of the fixing pad 22 and the thigh supporting pad 23, and the other end of the connecting rod 25 is rotatably fixed with the mattress frame 2 and is linked with the other end of the first linear telescopic mechanism 20.

The two opposite sides of one end, far away from the thigh supporting pad 23, of the shank supporting pad 24 are respectively and rotatably fixed with one end of one connecting rod 25, the other ends of the two connecting rods 25 are rotatably fixed with the mattress frame 2, the end part of the first linear telescopic mechanism 20 is rotatably fixed with one of the connecting rods 25, and the distance between the two connecting rods 25 is gradually increased from the side of the mattress frame 2 to the side of the shank supporting pad 23. Wherein, the shank pad 24 is formed with an accommodating groove 29 which is opened downwards, one end of the connecting rod 25 is positioned in the accommodating groove 29 and is rotatably fixed with the groove wall of the accommodating groove 29, and when the shank pad 24 and the thigh pad 23 are both horizontally placed, the connecting rod 25 is positioned in the accommodating groove 29. Wherein, the lower side of one end of the thigh pad 23 close to the shank pad 24 is provided with a limit block 27.

The backrest cushion 21 is connected with a backrest driving mechanism which can drive the backrest cushion 21 to upwarp or flatly place, the backrest driving mechanism comprises a second linear telescopic mechanism 30, one end of the second linear telescopic mechanism 30 is rotatably fixed with the mattress frame 2 and is positioned at the lower sides of the fixed cushion 22 and the thigh supporting cushion 23, and the other end of the second linear telescopic mechanism 30 is rotatably fixed at the back side of the backrest cushion 21. The first linear telescoping mechanism 20 and the second linear telescoping mechanism 30 are both electric push rods.

Wherein, the bedstead 1 is equipped with a circular ring-shaped track 11 which is coaxial with the vertical axis of rotation of the mattress frame 2 corresponding to the lower part of the mattress frame 2, and four rolling mechanisms 12 which are arranged at intervals in a ring shape and can roll in the circular track 11 are equipped below the mattress frame 2. Wherein the rolling mechanism 12 comprises a bull's eye wheel. Wherein, the foot mat 13 is arranged above the bed tail of the bed frame 1, and when the mattress is in a lying state, the foot mat 13 is flush with the shank support mat 24 of the mattress. Wherein, the two sides of the middle part of the mattress frame 2 are provided with handrails 26.

As shown in fig. 6, the bed frame 1 is connected to the upper side of the base frame 4 by a bed frame lifting mechanism, and a bed frame driving mechanism for driving the bed frame lifting mechanism to lift is provided between the bed frame 1 and the base frame 4. The bedstead elevating mechanism comprises a plurality of folding connecting rods, the folding connecting rods comprise a first left folding connecting rod 51, a first right folding connecting rod 52, a second left folding connecting rod 53 and a second right folding connecting rod 54, the first left folding connecting rod 51 and the first right folding connecting rod 52 are respectively arranged between the left side and the right side of the front section of the underframe 4 and the left side and the right side of the front section of the bedstead 1, and the second left folding connecting rod 53 and the second right folding connecting rod 54 are respectively arranged between the left side and the right side of the rear section of the underframe 4 and the left side and the right side of the rear section of. The folding link is composed of an upper link 55 and a lower link 56, the upper end of the upper link 55 is rotatably fixed to the frame 1, the lower end of the lower link 56 is rotatably fixed to the base frame 4, the lower end of the upper link 55 is rotatably fixed to the upper end of the lower link 56, and the frame driving mechanism is configured to rotate the lower end of the upper link 55 around the upper end of the upper link 55 or rotate the upper end of the lower link 56 around the lower end of the lower link 56. Wherein, the upper link 55 and the lower link 56 of the folding link are connected by a hinge shaft arranged in the left-right direction, so that the upper link 55 and the lower link 56 form an angle opened forward or backward.

The chassis 4 is fixed with a rotating rod 61 which can rotate around the axis of the rotating rod 61 and is arranged along the left-right direction, the bedstead driving mechanism is linked to enable the rotating rod 61 to rotate, the bedstead driving mechanism comprises a third linear telescopic mechanism 60 arranged along the front-back direction, one end of the third linear telescopic mechanism 60 is rotatably fixed with the chassis 4, the other end of the third linear telescopic mechanism 60 is rotatably fixed with one end of an extension rod 62, and the other end of the extension rod 62 is fixed with the rotating rod 61. A swing rod is further fixed on the rotating rod 61, one end of the swing rod is a fixed end, the rotating rod 61 is fixed, the other end of the swing rod is a movable end and can rotate by taking the fixed end as a center, the movable end of the swing rod is linked with the linkage rod 63, and the end part of the linkage rod 63 is linked with the folding connecting rod. Wherein the third linear expansion mechanism 60 is an electric push rod.

The swing rods comprise a first swing rod 64 and a second swing rod 65 which are opposite to each other left and right, the lower end of the first swing rod 64 and the lower end of the second swing rod 65 are fixed ends, and the upper end of the first swing rod 64 and the upper end of the second swing rod 65 are movable ends. The joint of the lower end of the upper connecting rod 55 and the upper end of the lower connecting rod 56 is rotatably fixed with one end of a linkage rod 63, and the other end of the linkage rod 63 is rotatably fixed with the movable end of a swing rod. A linkage rod 63 is connected between the first swing link 64 and the first left folding connecting rod 51, and a linkage rod 63 is connected between the second swing link 65 and the second right folding connecting rod 54.

Two obliquely arranged support rods 66 are connected between the bedstead 1 and the underframe 4, the upper ends of the support rods 66 are rotatably fixed with the bedstead 1, and the lower ends of the support rods 66 are rotatably fixed with the underframe 4. The rotation center of the upper end of the left support rod is coaxially arranged with the rotation center of the upper end of the upper connecting rod 55 of the first left folding connecting rod 51, the rotation center of the upper end of the right support rod is coaxially arranged with the rotation center of the upper end of the upper connecting rod 55 of the first right folding connecting rod 51, the rotation center of the lower end of the left support rod is coaxially arranged with the rotation center of the lower end of the lower connecting rod 56 of the second left folding connecting rod 53, and the rotation center of the lower end of the right support rod is coaxially arranged with the rotation center of the lower end of.

When the user keeps lying down for a long time, in order to change the lying posture and leg motion of the user, the position of the lower leg rest pad 24 and the position of the upper leg rest pad 23 can be changed by the first linear expansion mechanism 20 of the leg rest driving mechanism. The third linear expansion mechanism 20 of the leg rest driving mechanism extends outwards, and the connecting rod 25 gradually rises to lift the movement of the lower leg rest pad 24 away from the thigh rest pad 23 and close to the foot pad 13, so that the thigh rest pad 23 is lifted upwards. When the first linear telescopic mechanism 20 of the leg rest driving mechanism extends to the limit position, the lower leg rest pad 24 is flatly placed, and the thigh rest pad 23 is tilted.

When a user needs to move from the nursing bed to other moving devices, the first linear telescopic mechanism 20 of the leg support driving mechanism extends to the limit position, then the mattress frame 2 rotates to enable the lower leg support pad 24 to be positioned at the left side or the right side of the bed frame 1, then the first linear telescopic mechanism 20 of the leg support driving mechanism retracts inwards, the lower leg support pad 24 descends, and the thigh support pad 23 turns downwards; when the shank cushion 24 and the thigh cushion 23 are both flat, the first linear telescopic mechanism 20 is not yet retracted to the limit position; when the first linear telescoping mechanism 20 retracts to the limit position, the connecting rod moves towards the fixing pad 22, so that the lower leg support pad 24 is turned downwards, and finally the lower leg support pad 24 is perpendicular to the thigh support pad 23. Finally, the nursing staff attaches to the user and enables the body of the user to lean forward, and then the bedstead 1 is driven to ascend through the bedstead driving mechanism and the bedstead lifting mechanism, so that the mattress frame 2 and the mattress are ascended, and the user is assisted to lean forward and leave the nursing bed.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A nursing bed comprises a bed frame and is characterized in that a mattress is arranged on the upper side of the bed frame and comprises a back cushion, a fixing cushion, a thigh supporting cushion and a shank supporting cushion, one end of the back cushion is rotatably fixed with the fixing cushion, one end of the thigh supporting cushion is rotatably fixed with the fixing cushion, the shank supporting cushion is rotatably fixed with the other end of the thigh supporting cushion, the fixing cushion is fixed with a mattress frame, the mattress frame is horizontally rotatably supported and connected on the bed frame around a vertical axis, and the shank supporting cushion is connected with a leg support driving mechanism for enabling the shank supporting cushion to turn over.

2. The nursing bed as claimed in claim 1, wherein the end of the shank support pad away from the thigh support pad is rotatably fixed to one end of a connecting rod, the other end of the connecting rod is linked to a leg support driving mechanism, the leg support driving mechanism comprises a first linear telescopic mechanism, one end of the first linear telescopic mechanism is rotatably fixed to the mattress frame, and the other end of the connecting rod is rotatably fixed to the mattress frame and linked to the other end of the first linear telescopic mechanism; the first linear telescopic mechanism is positioned at the lower side of the thigh supporting pad, and the connecting rod is positioned at the lower side of the shank supporting pad.

3. The nursing bed of claim 2, wherein the two opposite sides of the end of the shank support pad away from the thigh support pad are respectively and rotatably fixed with one end of a connecting rod, the other ends of the two connecting rods are rotatably fixed with the mattress frame, and the distance between the two connecting rods is gradually increased from the mattress frame side to the shank support pad side; the shank support pad is provided with a containing groove with a downward opening, and one end of the connecting rod is positioned in the containing groove and is rotatably fixed with the wall of the containing groove; and a limiting block is arranged on the lower side of one end, close to the shank supporting pad, of the thigh supporting pad.

4. A nursing bed as claimed in claim 1, 2 or 3, wherein the backrest cushion is connected to a backrest driving mechanism for driving the backrest cushion to tilt up or flat; the backrest driving mechanism comprises a second linear telescopic mechanism, one end of the second linear telescopic mechanism is rotatably fixed with the mattress frame, and the other end of the second linear telescopic mechanism is rotatably fixed on the back cushion back side.

5. The nursing bed of claim 1, wherein the bed frame is connected to the upper side of the bottom frame by a bed frame lifting mechanism, and a bed frame driving mechanism for driving the bed frame lifting mechanism to lift is arranged between the bed frame and the bottom frame; the bedstead lifting mechanism comprises a plurality of folding connecting rods, each folding connecting rod is composed of an upper connecting rod and a lower connecting rod, the upper end of each upper connecting rod is rotatably fixed with the bedstead, the lower end of each lower connecting rod is rotatably fixed with the underframe, the lower end of each upper connecting rod is rotatably fixed with the upper end of each lower connecting rod, and the bedstead driving mechanism is used for enabling the upper ends of the upper connecting rods to rotate around the upper ends of the upper connecting rods or enabling the lower ends of the lower connecting rods to rotate around the lower ends of the lower.

6. A nursing bed as claimed in claim 5, wherein the lifting mechanism further comprises a swing link, one end of the swing link is a fixed end and is linked with the driving mechanism of the bed frame, the other end of the swing link is a movable end and can rotate around the fixed end, the movable end of the swing link is linked with a linkage rod, and the end of the linkage rod is linked with the folding connecting rod.

7. A nursing bed as claimed in claim 6, wherein a rotating rod capable of rotating around its axis is fixed on the bed frame or the bottom frame, the fixed end of the swinging rod is fixed on the rotating rod, the bed frame driving mechanism is linked to rotate the rotating rod, the swinging rod is vertically disposed, and the rotating rod is horizontally disposed; the bedstead driving mechanism linkage comprises a third linear telescopic mechanism, one end of the third linear telescopic mechanism is rotatably fixed with the bedstead or the underframe, the other end of the third linear telescopic mechanism is rotatably fixed with one end of the extension rod, and the other end of the extension rod is fixed with the rotating rod; the joint of the lower end of the upper connecting rod and the upper end of the lower connecting rod is rotatably fixed with one end of the linkage rod, and the other end of the linkage rod is rotatably fixed with the movable end of the oscillating rod.

8. The nursing bed as claimed in claim 6, wherein the folding connecting rod comprises a first left folding connecting rod, a first right folding connecting rod, a second left folding connecting rod and a second right folding connecting rod, the first left folding connecting rod and the first right folding connecting rod are respectively arranged between the left and right sides of the front section of the underframe and the left and right sides of the front section of the bedstead, the second left folding connecting rod and the second right folding connecting rod are respectively arranged between the left and right sides of the rear section of the underframe and the left and right sides of the rear section of the bedstead, the swing link comprises a first swing link and a second swing link which are opposite from left to right or from front to back, a linkage rod is connected between the first swing link and the first left folding connecting rod, and a linkage rod is connected between the second swing link and the second right folding connecting rod; the upper connecting rod and the lower connecting rod of the folding connecting rod are connected through a hinge shaft arranged along the left-right direction, the first swing rod and the second swing rod are oppositely arranged left and right, and the bedstead driving mechanism comprises a third linear telescopic mechanism arranged along the front-back direction.

9. A nursing bed as claimed in claim 5, wherein a plurality of obliquely arranged support rods are connected between the bed frame and the bottom frame, the upper ends of the support rods are rotatably fixed to the bed frame, and the lower ends of the support rods are rotatably fixed to the bottom frame; the upper end rotating center of the support rod is coaxial with the upper end rotating center of an upper connecting rod of one folding connecting rod, and the lower end rotating center of the support rod is coaxial with the lower end rotating center of a lower connecting rod of the other folding connecting rod.

10. A nursing bed as claimed in claim 1, 2, 3 or 4, wherein said bed frame has a circular track coaxial with the vertical axis of rotation of the mattress frame under the mattress frame, and rolling mechanisms are disposed under the mattress frame at intervals and capable of rolling in the circular track; a foot pad is arranged above the bed tail of the bed frame, and is flush with the mattress when the mattress is in a lying state; the two sides of the middle part of the mattress frame are provided with handrails.