CN212631091U

CN212631091U - Nursing bed

Info

Publication number: CN212631091U
Application number: CN202020785270.9U
Authority: CN
Inventors: 薛震
Original assignee: Guangdong Bofang Zhongji Medical Technology Co ltd
Current assignee: Guangdong Bofang Zhongji Medical Technology Co ltd
Priority date: 2020-05-12
Filing date: 2020-05-12
Publication date: 2021-03-02
Anticipated expiration: 2030-05-12

Abstract

The utility model provides a nursing bed relates to medical equipment technical field, including bedstead and bed board, still include: the direction rotating mechanism is arranged on the bed frame and used for controlling the bed board to rotate horizontally so as to adjust the direction of the bed board; the pitching rotating mechanism is arranged on the direction rotating mechanism, is connected with the bed plate through a bracket and is used for controlling the bed plate to perform pitching rotation; the transverse rolling rotating mechanism is arranged on the bracket and used for controlling the bed board to rotate in a transverse rolling manner; can carry out position, every single move and roll, supplementary disease carries out multiple posture adjustment, solves current nursing bed and can't supplementary patient and carry out posture adjustment, leads to increasing the problem of disease and nursing staff's burden.

Description

Nursing bed

Technical Field

The utility model relates to the technical field of medical equipment, particularly, relate to a nursing bed.

Background

When a patient needs to be diagnosed and treated or the posture of the patient is adjusted, a nursing staff is required to move, turn over or move the patient from the side, especially for the patient with heavy weight such as obesity, the posture adjustment is extremely laborious and unsafe, the burden of the patient and the nursing staff is increased, but the symptoms such as bedsore and the like can be caused by long-time lying of the body, and the physical and mental health of the patient is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the utility model provides a nursing bed can assist the patient to carry out multiple posture adjustment, solves the unable auxiliary patient of current nursing bed and carries out posture adjustment, leads to increasing the problem of disease and nursing staff's burden.

In order to achieve the above object, the utility model adopts the following technical scheme:

a nursing bed comprises a bed board, a bed frame and further comprises:

the direction rotating mechanism is arranged on the bed frame and used for controlling the bed board to rotate horizontally so as to adjust the direction of the bed board;

the pitching rotating mechanism is arranged on the direction rotating mechanism, is connected with the bed plate through a bracket and is used for controlling the bed plate to perform pitching rotation;

and the transverse rolling rotating mechanism is arranged on the bracket and used for controlling the bed board to rotate in a transverse rolling manner.

In the implementation process, the rotation of the bed plate in the horizontal direction is realized through the azimuth rotating mechanism; the front and back inclination of the bed board is realized through the pitching rotating mechanism, so that the patient can be helped to adjust the supine posture; the bed plate can roll and rotate through the rolling and rotating mechanism, so that a patient can be turned left and right, the device can assist the patient to adjust multiple postures such as lying on the back and turning, the position and the posture of the patient can be freely adjusted, the burden of the patient and nursing personnel is relieved, the working strength of the nursing personnel is reduced, and the convenience of rehabilitation work is improved; the bed sore that still avoids the disease to lie in bed for a long time to lead to scheduling problem is favorable to disease physical and mental health, solves current nursing bed and can't assist the patient to carry out the posture adjustment, leads to increasing the problem of disease and nursing staff's burden.

Further, the azimuth rotation mechanism includes:

the base plate is arranged on the bedstead and positioned in the middle of the bed board, and a rotating platform is rotatably connected to the base plate;

the first transmission mechanism is in transmission connection with the rotating platform and used for driving the rotating platform to rotate.

In the implementation process, the rotating table is driven to rotate through the first transmission mechanism, so that the bed plate is driven to rotate, the direction rotation of the bed plate is realized, and the direction of the bed plate is adjusted.

Further, the first transmission mechanism includes:

the first azimuth gear is arranged on the rotating platform and used for driving the rotating platform to rotate;

the second azimuth gear is arranged on the chassis and is in transmission connection with the azimuth motor, and the first azimuth gear is meshed with the second azimuth gear so as to drive the first azimuth gear to rotate through the second azimuth gear to change the azimuth of the bed board.

In the implementation process, the second azimuth gear is used for driving the first azimuth gear to rotate, and the first azimuth gear drives the rotating platform to rotate, so that the bed plate rotates and the azimuth of the bed plate is adjusted.

Further, the pitch rotation mechanism includes:

the pitching ear seats comprise a first pitching ear seat and a second pitching ear seat, the first pitching ear seat and the second pitching ear seat are symmetrically arranged on the rotating platform along the width direction of the bed plate, and the bracket is rotationally connected with the pitching ear seats through a pitching shaft;

and the second transmission mechanism is in transmission connection with the pitching shaft and is used for driving the support to perform pitching rotation.

In the implementation process, the first pitching ear seats and the second pitching ear seats are symmetrically arranged on two sides of the width direction of the bed plate, the support below the bed plate is rotatably connected with the rotating table through the pitching shafts on the pitching ear seats, and the second transmission mechanism drives the support to rotate in a pitching mode through the pitching shafts, so that the pitching angle of the bed plate is adjusted, and the bed plate can be used for helping patients to adjust the supine angle and posture of the patient.

Further, the second transmission mechanism includes:

the first pitching gear is arranged on the bracket and is in transmission connection with the pitching shaft;

the second pitching gear is arranged on the rotating platform and meshed with the first pitching gear and used for driving the first pitching gear to rotate so as to change the pitching angle of the bed board.

In the implementation process, the second pitching gear drives the first pitching gear to rotate, and the first pitching gear drives the support to rotate, so that the pitching angle of the bed plate is changed, the patient is assisted to change the pitching posture, and the moving burden of the patient and nursing staff is reduced.

The first pitching gear is further provided with a first limiting assembly, the first limiting assembly comprises a first limiting column and an arc-shaped first limiting groove, and the first limiting groove is arranged on the first pitching gear and has a length matched with the pitching angle of the bed plate;

the first limiting column is horizontally arranged on the first pitching lug seat and clamped in the first limiting groove, and is connected with the first limiting groove in a sliding manner.

In the above-mentioned realization process, utilize first spacing post to play limiting displacement to first every single move gear, inject first every single move gear's turned angle, satisfy human every single move needs can, prevent that bed board inclination is too big, cause the condition emergence of disease follow bed board landing, when supplementary disease carries out the position appearance adjustment, guaranteed the safety of disease.

The roll rotation mechanism includes:

the transverse roller seat comprises a first transverse roller seat and a second transverse roller seat, the first transverse roller seat and the second transverse roller seat are symmetrically arranged on the bracket along the length direction of the bed plate, and the bed plate is rotationally connected with the transverse roller seats through transverse rollers;

and the third transmission mechanism is in transmission connection with the transverse rolling shaft and is used for driving the bed plate to rotate in a transverse rolling mode.

In the implementation process, the third transmission mechanism drives the bed plate to transversely roll and rotate through the transverse rolling shaft, so that the patient is assisted to turn over or lie on the side, the burden of the patient and nursing personnel is relieved, the occurrence of diseases such as bedsore caused by long-term bed lying of the patient is effectively prevented, and the physical and mental health of the patient is facilitated.

Further, the third transmission mechanism includes:

the first transverse rolling gear is arranged at the bottom of the bed plate and is in transmission connection with the transverse rolling shaft;

and the second transverse rolling gear is arranged on the first transverse rolling lug seat and meshed with the first transverse rolling gear and is used for driving the first transverse rolling gear to rotate so as to change the transverse rolling angle of the bed plate.

In the implementation process, the second transverse rolling gear is adopted to drive the first transverse rolling gear to rotate, so that the first transverse rolling gear drives the bed plate to rotate in a transverse rolling mode, the transverse rolling angle of the bed plate is changed, multiple postures of the bed plate are changed, and patients can adjust postures such as turning over or lying on the side.

Furthermore, a second limiting assembly is further arranged on the first transverse rolling gear, the second limiting assembly comprises a second limiting column and an arc-shaped second limiting groove, and the second limiting groove is arranged on the first transverse rolling gear and has a length matched with the transverse rolling angle of the bed board;

the first limiting column is horizontally arranged on the first transverse lug seat and clamped in the second limiting groove, and is connected with the second limiting groove in a sliding manner.

In the implementation process, the second limiting column is used for limiting the roll angle of the bed plate, the roll angle can meet the requirements of lateral lying and turning over of a patient, the condition that the bed plate roll angle is too large and the patient slides down from the bed plate is prevented, and the safety is improved.

Further, the first transmission mechanism and the second transmission mechanism adopt chain wheels or belt pulleys for transmission.

In the implementation process, the gears in the first transmission mechanism and the second transmission mechanism can adopt chain wheels or belt pulleys, so that the rotation angles of various postures of the bed plate can be accurately adjusted.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a nursing bed provided in an embodiment of the present application;

FIG. 2 is a schematic left-side view of the nursing bed of FIG. 1 according to an embodiment of the present disclosure;

fig. 3 is a schematic top view of the nursing bed after being rotated by the azimuth rotating mechanism according to the embodiment of the present application;

fig. 4 is a schematic structural diagram of the pitch rotation mechanism provided in the embodiment of the present application after pitch rotation;

fig. 5 is a schematic structural diagram of the roll rotating mechanism after roll rotation according to the embodiment of the present application.

Description of reference numerals:

10-bed frame; 11-a chassis; 12-a controller; 13-a first azimuth gear; 14-a first limit groove; 15-a second azimuth gear; 16-azimuth motor; 17-a second roll gear; 18-a roll motor; 19-a first roll gear; 20-roll sensor; 21-a first pitch gear; 22-a first restraint post; 23-a second pitch gear; 24-a scaffold; 25-a pitch sensor; 26-a transverse roller; 27-bed board; 28-a second roller block; 29-pitch axis; 30-a pitch motor; 31-a second limiting groove; 32-a first roller block; 33-a second limit post; 34-an orientation sensor; 35-an inertial measurement unit; 36-a second pitch ear mount; 37-a first pitch ear mount; 38-rotating table; 39-a first transmission mechanism; 40-orientation rotation mechanism; 41-a second transmission mechanism; 42-a pitch rotation mechanism; 43-a third transmission mechanism; 44-a roll rotation mechanism; 45-a first stop assembly; 46-second stop assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or a point connection; either directly or indirectly through intervening media, or may be an internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a nursing bed according to an embodiment of the present invention. The nursing bed can realize the adjustment of multiple postures of azimuth rotation, roll rotation, pitching rotation and the like so as to assist patients in adjusting the position and the posture and adjusting the multiple postures. The device comprises three rotating mechanisms besides the bed frame 10 and the bed board 27:

an orientation rotating mechanism 40, which is arranged on the bedstead 10, and is used for controlling the bed board 27 to rotate horizontally so as to adjust the orientation of the bed board 27;

a pitching rotating mechanism 42 which is arranged on the azimuth rotating mechanism 40, is connected with the bed plate 27 through the bracket 24, and is used for controlling the bed plate 27 to perform pitching rotation;

and a rolling rotation mechanism 44, which is arranged on the bracket 24 and is used for controlling the bed plate 27 to roll.

The direction adjustment, the pitch angle adjustment and the roll angle adjustment of the bed board 27 can be realized through the direction rotating mechanism 40, the pitch rotating mechanism 42 and the roll rotating mechanism 44, so that the adjustment of the positions, the pitches, the turning-over or the lying-on postures of patients can be assisted, the required posture adjustment under various scenes can be completed, the burden caused by manual moving of nursing staff is reduced, the working strength is reduced, the convenience for carrying out rehabilitation work is improved, and the problem that the burden of patients and nursing staff is increased due to the fact that the existing nursing bed can not assist the patients to carry out the posture adjustment is solved.

By way of example, the azimuth rotating mechanism 40 may specifically include:

a base plate 11 which is arranged on the bedstead 10 and is positioned in the middle of the bed plate 27, and a rotating platform 38 is rotatably connected on the base plate 11;

the first transmission mechanism 39 is in transmission connection with the rotating platform 38 and is used for driving the rotating platform 38 to rotate.

Illustratively, the first transmission mechanism 39 includes a first azimuth gear 13, a second azimuth gear 15, and an azimuth motor 16:

the first azimuth gear 13 is arranged on the rotating platform 38 and is used for driving the rotating platform 38 to rotate;

the second azimuth gear 15 is arranged on the chassis 11 and is in transmission connection with the azimuth motor 16, and the diameter of the first azimuth gear 13 is larger than that of the second azimuth gear 15, so that the rotating speed of the bed plate 27 can be adjusted, and the safety is enhanced; the first direction gear 13 is meshed with the second direction gear 15, so that the second direction gear 15 drives the first direction gear 13 to rotate, the direction of the bed plate 27 is changed, and the position of a patient can be adjusted. As shown in fig. 3, it is a schematic top view of the nursing bed after rotating by the azimuth rotating mechanism 40. Can make the bed board 27 horizontal rotation after the position is rotatory, change the orientation of disease, the medical personnel of being convenient for inspect the disease, need not to move the disease, the convenience of reinforcing use.

For example, as shown in fig. 2, it is a schematic left-side view of the nursing bed in fig. 1. The pitch rotation mechanism 42 includes:

the pitching ear seats comprise a first pitching ear seat 37 and a second pitching ear seat 36, are symmetrically arranged on the rotating platform 38 along the width direction of the bed plate 27, and the bracket 24 is rotatably connected with the pitching ear seats through the pitching shafts 29;

and the second transmission mechanism 41 is in transmission connection with the pitch shaft 29 and is used for driving the bracket 24 to perform pitch rotation.

Illustratively, the second transmission 41 includes a first pitch gear 21, a second pitch gear 23, and a pitch motor 30:

the first pitching gear 21 is arranged on the bracket 24 and is in transmission connection with the pitching shaft 29, when the first pitching gear 21 rotates, the bracket 24 and the bed plate 27 above the bracket 24 rotate in a pitching manner along with the first pitching gear, and the first pitching gear can be used for adjusting the prone angle of a patient;

the second pitching gear 23 is arranged on the rotating platform 38 and meshed with the first pitching gear 21, and is used for driving the first pitching gear 21 to rotate so as to change the pitching angle of the bed plate 27, and the diameter of the second pitching gear 23 is smaller than that of the first pitching gear 21, so that the rotating speed of the first pitching gear 21 is reduced, the pitching rotating speed of the bed plate 27 is controlled, and the safety is enhanced; the pitch motor 30 is disposed on the rotating platform 38 and is in transmission connection with the second pitch gear 23 for driving the second pitch gear 23 to rotate. As shown in fig. 4, it is a schematic structural diagram of the elevation rotation mechanism 42 after elevation rotation, which can assist the patient to adjust the prone angle.

The first pitching gear 21 is also provided with a first limiting component 45, the first limiting component 45 comprises a first limiting column 22 and an arc-shaped first limiting groove 14, and the first limiting groove 14 is arranged on the first pitching gear 21 and has the length matched with the pitching angle of the bed plate 27;

the first position-limiting post 22 is horizontally disposed on the first pitching ear seat 37 and is clamped in the first position-limiting groove 14, and is slidably connected to the first position-limiting groove 14.

When first pitch gear 21 rotated, first spacing post 22 slided along first spacing groove 14, first spacing post 22 and first spacing groove 14 mutually supported play limiting displacement to the every single move angle of bed board 27, the length of first spacing groove 14 is corresponding to the biggest every single move angle of bed board 27 every single move, consequently, through setting up the length of suitable first spacing groove 14, make the every single move angle of bed board 27 satisfy the every single move needs of disease can, prevent that the every single move angle of bed board 27 is too big, lead to the disease to slide down from bed board 27, the security is strengthened.

Illustratively, the roll rotation mechanism 44 includes:

the cross roller seat comprises a first cross roller seat 32 and a second cross roller seat 28, which are symmetrically arranged on the bracket 24 along the length direction of the bed plate 27, and the bed plate 27 is rotationally connected with the cross roller seats through cross rollers 26;

and the third transmission mechanism 43 is in transmission connection with the transverse rolling shaft 26 and is used for driving the bed plate 27 to rotate transversely.

Illustratively, the third transmission mechanism 43 includes a first roll gear 19, a second roll gear 17, and a roll motor 18:

the first transverse rolling gear 19 is arranged at the bottom of the bed plate 27 and is in transmission connection with the transverse rolling shaft 26, when the first transverse rolling gear 19 rotates, the bed plate 27 is driven by the transverse rolling shaft 26 to rotate in a transverse rolling manner, so that a patient can be assisted to lie on the side or turn over, the problems of bedsore and the like caused by long-term lying of the patient can be avoided, and the physical and mental health of the patient is facilitated;

the second transverse rolling gear 17 is arranged on the first transverse rolling lug seat 32, is meshed with the first transverse rolling gear 19 and is used for driving the first transverse rolling gear 19 to rotate so as to change the transverse rolling angle of the bed plate 27; the diameter of the second rolling gear 17 is smaller than that of the first rolling gear 19, and the second rolling gear is used for slowing down the rotating speed of the first rolling gear 19, so that the rolling speed of the bed plate 27 is controlled, and the safety is enhanced; the roll motor 18 is arranged at the bottom of the bracket 24 and is in transmission connection with the second roll gear 17 for driving the second pitch gear 23 to rotate. As shown in fig. 5, the structure of the patient after rolling by the rolling mechanism 44 is schematically shown, which can assist the patient to adjust his posture such as turning over or lying on his side, and reduce the burden on the nursing staff.

The first transverse rolling gear 19 is also provided with a second limiting component 46, the second limiting component 46 comprises a second limiting column 33 and an arc-shaped second limiting groove 31, and the second limiting groove 31 is arranged on the first transverse rolling gear 19 and has a length matched with the transverse rolling angle of the bed plate 27;

the second limiting column 33 is horizontally disposed on the first roller seat 32 and is clamped in the second limiting groove 31, and is slidably connected to the second limiting groove 31.

When first roll gear 19 rotated, second spacing post 33 slided along second spacing groove 31, spacing post 33 of second and second spacing groove 31 mutually support and play limiting displacement to the roll angle of bed board 27, the length of second spacing groove 31 is corresponding to the biggest roll angle of bed board 27 roll, consequently, through the length that sets up suitable second spacing groove 31, make the roll angle of bed board 27 satisfy the roll needs of disease can, prevent that the roll angle of bed board 27 is too big, lead to the disease to roll from bed board 27, the reinforcing security.

The first transmission mechanism 39, the second transmission mechanism 41, and the third transmission mechanism 43 may be driven by a transmission mechanism such as a sprocket or a pulley, and are not limited herein.

The orientation rotating mechanism 40, the pitching rotating mechanism 42 and the rolling rotating mechanism 44 are used for realizing the accurate adjustment of the orientation, the pitching angle and the rolling angle of the bed plate 27, so that the change of various postures of pitching, turning over or lying on the side of a patient can be assisted, the burden of the patient and nursing personnel is reduced, the occurrence of diseases such as bedsore is reduced, and the physical and mental health of the patient is facilitated; and the adjustment of the three postures can be independently finished or can be mutually cooperated.

In addition, the controller 12 may be used to implement multi-posture control of the nursing bed, as follows:

an orientation sensor 34 for detecting positional information of the rotary table 38 after the rotary table 38 is rotated is provided on the rotary table 38;

a pitch sensor 25 is arranged on the bracket 24 and used for measuring the position information of the bracket 24 after pitch rotation;

a roll sensor 20 is arranged at the bottom of the bed plate 27 and used for measuring the position information of the bed plate 27 after the roll rotation;

an inertial measurement unit 35 and a controller 12 are arranged on a chassis 11, a position sensor 34, a pitch sensor 25 and a roll sensor 20 feed back position information to the inertial measurement unit 35, target position measurement and feedback are carried out, the position information is fed back to the controller 12, the controller 12 controls a corresponding position motor 16, a corresponding pitch motor 30 and a corresponding roll motor 18 to work, and the posture of a bed plate 27 is adjusted; according to the target position information and the posture information required to be changed, the azimuth motor 16, the pitching motor 30 and the roll motor 18 can operate independently or cooperatively, the inertial measurement unit 35 provides operation information, and the controller 12 controls the azimuth motor 16, the pitching motor 30 and the roll motor 18 to change the posture of the bed plate 27. Since the controller 12 controls the azimuth motor 16, the pitch motor 30 and the roll motor 18 to be controlled by the controller 12, and the inertial measurement unit 35 receives the position information fed back by the azimuth sensor 34, the pitch sensor 25 and the roll sensor 20 and measures and calculates the target position information, which belong to the prior art, the detailed description is omitted here.

In all the embodiments described above, the "large" and the "small" are relatively speaking, "more" and "less" are relatively speaking, "upper" and "lower" are relatively speaking, and the description of these relative terms is omitted.

It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present invention," or "as an alternative implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in this embodiment," "in an embodiment of the invention," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are exemplary and alternative embodiments, and that the acts and modules illustrated are not required to practice the invention.

In the various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence necessarily in order, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A nursing bed is characterized by comprising a bed frame and a bed board, and further comprising:

2. The care bed of claim 1, wherein the orientation rotation mechanism comprises:

3. The care bed of claim 2, wherein the first drive mechanism comprises:

4. The care bed of claim 2, wherein the pitch rotation mechanism comprises:

5. The care bed of claim 4, wherein the second transmission mechanism comprises:

6. The nursing bed of claim 5, wherein the first pitch gear is further provided with a first limiting component, the first limiting component comprises a first limiting column and a first limiting groove in an arc shape, and the first limiting groove is arranged on the first pitch gear and has a length matched with the pitch angle of the bed board;

7. The care bed of claim 1, wherein the roll rotation mechanism comprises:

8. The care bed of claim 7, wherein the third transmission mechanism comprises:

9. The nursing bed of claim 8, wherein the first trolley gear is further provided with a second limiting component, the second limiting component comprises a second limiting column and a second limiting groove in an arc shape, and the second limiting groove is arranged on the first trolley gear and has a length matched with the trolley angle of the bed board;

the second limiting column is horizontally arranged on the first transverse roller seat and clamped in the second limiting groove, and is connected with the second limiting groove in a sliding mode.

10. The nursing bed of claim 4, wherein the first and second transmission mechanisms are driven by sprockets or pulleys.