CN112656612B

CN112656612B - Bed body elevation structure of nursing bed

Info

Publication number: CN112656612B
Application number: CN202110093975.3A
Authority: CN
Inventors: 辛海兵; 王心醉; 陈俊江; 李兆波; 李鹏飞; 梁岳青; 蔡后勇; 刘奇; 李希华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2022-02-08
Anticipated expiration: 2041-01-22
Also published as: CN112656612A

Abstract

The invention provides a bed body lifting structure of a nursing bed, which comprises: the front side of the fixed bed frame is an open structure for the wheelchair to go in and out; the lifting bedstead is arranged in the fixed bedstead in a lifting way and is used for driving the wheelchair to lift and descend together; the front side of the lifting bed frame is an open structure for the wheelchair to go in and out; the driving assembly is used for driving the lifting bed frame to lift; the bed body lifting structure of the nursing bed can enable the nursing bed integrating a wheelchair and a bed to have a lifting function.

Description

Bed body elevation structure of nursing bed

Technical Field

The invention relates to the technical field of medical care equipment, in particular to a bed body lifting structure of a care bed.

Background

At present, a common nursing bed and a wheelchair are mutually independent, when an old person or a patient is transferred to the wheelchair from the bed in the use process, the old person or the patient needs to be transferred under the help of nursing staff or family members, most of the old person or the patient does not have self-care capability, the old person or the patient is completely transferred to the wheelchair from the bed by the nursing staff or the family members, the transfer is very difficult, and the old person or the patient can be secondarily injured by shearing force of the bed surface to the skin in the transfer process. Therefore, the wheelchair and the bed are integrated into a whole, and the development trend of the future nursing bed is formed.

At present, the integrated nursing bed of the bed and chair in the market is mainly divided into two types: the structure of the wheelchair in the middle of the bed and the structure of the wheelchair on one side of the bed. The wheelchair is arranged in the middle of the bed, the wheelchair and the bed need to be separated and are mutually independent, the bed parts on two sides of the wheelchair are designed in a fixed mode, all actions can only be integrated on the wheelchair, and actions corresponding to required functions cannot be realized; due to the structural limitation of the wheelchair, the wheelchair only has the functions of lifting the back and bending the legs up and down. The wheelchair and the fixed part of the bed respectively occupy half of the total bed in the structure of one side of the bed, and although the wheelchair can be directly separated from the side surface, the space required by separating the bed and the chair is reduced, but a person needs to be in the middle of the bed when lying in bed normally, and the wheelchair and the bed need to be separated, and the structures of the wheelchair and the bed need to be mutually independent, so that the functions of lifting the back, turning over and the like of the wheelchair cannot be realized.

For a bedridden patient or an old person, a nursing staff or a parent person needs to clean the body of the old person or the patient regularly, when the body is cleaned, the nursing staff or the parent person can be tired particularly when the body is bent for a long time due to the low bed ratio, and particularly for nursing staff for one-to-many care, the nursing bed needs to have a lifting function; for institutions such as nursing homes and hospitals, the old people need to be transferred to other instrument products, the height of the bed needs to be adjusted to correspond to different instrument products, and the nursing bed also needs to have a lifting function; for the above two types of existing nursing bed products, the bed and chair mechanisms need to be independent from each other, and the lifting function of the bed cannot be realized.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a bed body lifting structure of a nursing bed, which can enable the nursing bed integrating a wheelchair and a bed to have a lifting function.

In order to achieve the purpose, the invention adopts the following technical scheme:

a bed body elevation structure of nursing bed includes:

the front side of the fixed bed frame is an open structure for the wheelchair to go in and out;

the lifting bedstead is arranged in the fixed bedstead in a lifting way and is used for driving the wheelchair to lift and descend together; the front side of the lifting bed frame is an open structure for the wheelchair to go in and out;

and the driving assembly is used for driving the lifting bed frame to lift.

In the bed body lifting structure of the nursing bed, the driving assembly comprises at least three first driving devices, wherein the at least three first driving devices are arranged in a triangular manner, and the first driving devices are used for driving the lifting bed frame to lift.

In some embodiments, the first driving device is a lifting motor, and the lower end of the lifting motor is connected to the fixed bed frame and the upper end of the lifting motor is connected to the lifting bed frame.

Furthermore, the lower end of the lifting motor is hinged with the fixed bed frame, and the upper end of the lifting motor is hinged with the lifting bed frame.

In the bed body lifting structure of the nursing bed, the lifting bed frame comprises a first underframe, four first vertical beams are arranged on the first underframe, and the four first vertical beams are distributed in a matrix; the fixed bed frame comprises a second underframe, four vertical guide pieces matched with the four first vertical beams are arranged on the second underframe, and the four first vertical beams are respectively connected with the corresponding vertical guide pieces in a sliding and guiding manner.

Furthermore, at least one connecting beam is connected between the two first vertical beams on the left side, between the two first vertical beams on the right side and between the two first vertical beams on the rear side.

The bed body lifting structure of the nursing bed further comprises two side guardrails, and the two side guardrails are connected to the left side and the right side of the lifting bed frame respectively.

The bed body lifting structure of the nursing bed further comprises two bed-chair butt-joint mechanisms, wherein the two bed-chair butt-joint mechanisms are symmetrically arranged on the lower portion of the lifting bed frame and are used for being in butt joint with a wheelchair to lock the wheelchair.

Further, the bed-chair docking mechanism comprises:

the supporting seat is fixedly arranged at the lower part of the lifting bed frame and is used for supporting the wheelchair;

the rear limiting piece is arranged on the rear side of the supporting seat and used for limiting the backward position of the wheelchair;

the locking piece is arranged on the front side of the supporting seat and can move between a locking position and an unlocking position; the locking piece can block the wheelchair from moving forwards when in the locking position, and does not block the wheelchair from moving forwards when in the unlocking position.

Furthermore, the supporting seat comprises a lower supporting plate fixedly connected with the lifting bed frame and a lower guide wheel set; the supporting seat further comprises a plurality of guide posts and a lower guide wheel support, the guide posts are inserted on the lower supporting plate in a sliding mode, the lower guide wheel support is fixedly connected with the tops of all the guide posts, and compression springs are sleeved on the guide posts; the guide wheel set is arranged on the lower guide wheel bracket.

Has the advantages that:

the bed body lifting structure of the nursing bed provided by the invention has the advantages that the bed frame comprises the fixed bed frame and the lifting bed frame, the front sides of the fixed bed frame and the lifting bed frame are both of an open structure for the wheelchair to go in and out, and when the wheelchair enters the lifting bed frame, the lifting bed frame can drive the wheelchair to lift together when lifting, so that the nursing bed integrating the wheelchair and the bed has a lifting function.

Drawings

Fig. 1 is a schematic structural view of a bed body lifting structure of a nursing bed provided by the invention.

Fig. 2 is a connection structure diagram of a lifting motor, a fixed bed frame and a lifting bed frame in the bed body lifting structure of the nursing bed provided by the invention.

Fig. 3 is a schematic structural view of a bed chair docking mechanism in a bed lifting structure of a nursing bed provided by the invention.

Fig. 4 is a schematic view of a wheelchair used in cooperation with a bed lifting structure of a nursing bed provided by the invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The following disclosure provides embodiments or examples for implementing different configurations of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

For convenience of description, the front direction refers to the moving direction of the wheelchair when the wheelchair leaves the lifting bed frame, the rear direction is opposite to the front direction, and the left-right direction is horizontally vertical to the front-rear direction.

Referring to fig. 1, the present invention provides a bed body lifting structure of a nursing bed, including:

a fixed frame 100 having an open structure on the front side thereof for the wheelchair 90 to enter and exit (i.e., having no wheelchair entrance/exit blocking member on the front side thereof);

a lifting frame 200 which is liftably provided in the fixed frame 100 and drives the wheelchair 90 to lift and descend together; the front side of the lifting bed frame 200 is an open structure for the wheelchair 90 to go in and out (i.e., the front side is not provided with a component for preventing the wheelchair from going in and out);

and a driving assembly 300 for driving the lifting frame 200 to be lifted.

Referring to fig. 4, a schematic diagram of a wheelchair 90 used in conjunction with a bed lifting structure of the nursing bed includes a seat plate 93, a back plate 91 and a leg pad 92 pivotally connected to front and rear sides of the seat plate 93, respectively, the back plate 91 and the leg pad 92 can swing (generally electrically operated), when the back plate 91 and the leg pad 92 swing to a horizontal position, they form a bed plate together with the seat plate 93, and when the back plate 91 is erected and the leg pad 92 swings downward, the bed plate is changed into the seat plate 93, the back plate 91 and the leg pad 92 of the wheelchair again. When a user needs to lie, the wheelchair 90 is moved into the lifting bed frame 200, and the back plate 91 and the leg pad 92 are swung to the horizontal position to form a bed plate; when the user needs to sit up and use the wheelchair, the back plate 91 is directly erected (thereby raising the back of the user), the leg rest 92 is swung down to form the wheelchair, and the user is allowed to sit up.

Because the bed frame of the bed body lifting structure comprises the fixed bed frame 100 and the lifting bed frame 200, and the front sides of the fixed bed frame 100 and the lifting bed frame 200 are both open structures for the wheelchair 90 to go in and out, when the wheelchair 90 enters the lifting bed frame, the lifting bed frame 200 can drive the wheelchair 90 to lift together when lifting, thereby the nursing bed integrating the wheelchair and the bed has the lifting function.

In order to realize stable lifting of the lifting frame 200, the driving assembly 300 comprises at least three first driving devices 301, wherein the at least three first driving devices 301 are arranged in a triangular shape, and the first driving devices 301 are used for driving the lifting frame to lift. Since the at least three first driving means 301 form a non-collinear three-point support for the lifting frame 200, the lifting frame 200 can be supported relatively stably. For example, in fig. 1, three first driving devices 301 are provided, two of the three first driving devices are respectively connected to the left and right sides of the front side of the lifting frame 200, and the third driving device is connected to the middle of the rear side of the lifting frame 200, so that the three first driving devices 301 are arranged in an isosceles triangle, the stability is good, and the number of the first driving devices 301 is small, and the structure is simpler.

In some embodiments, referring to fig. 1 and 2, the first driving device 301 is a lifting motor, and the lower end of the lifting motor is connected to the fixed bed frame 100 and the upper end of the lifting motor is connected to the lifting bed frame 200. When synchronously extending or retracting, each lifting motor can drive the lifting bed frame 200 to lift.

Preferably, referring to fig. 2, the lower end of the elevating motor is hinged to the fixed frame 100, and the upper end of the elevating motor is hinged to the elevating frame 200. Therefore, the requirement on the vertical degree of the lifting motor can be reduced, the positioning precision of the connecting position is favorably reduced, and the production and assembly difficulty is reduced. Specifically, referring to fig. 2, a first connection lug 302 is disposed on the fixed bed frame 100, a second connection lug 303 is disposed on the lifting bed frame 200, a lower end of the lifting motor is hinged to the first connection lug 302 through a pin, and an upper end of the lifting motor is hinged to the second connection lug 303 through a pin.

In practical applications, the first driving device 301 is not limited to be a lifting motor, and may be, for example, an air cylinder, a hydraulic cylinder, an electric telescopic rod, a linear motor, a motor and rack and pinion transmission mechanism, a worm and gear lifting device, a motor and winding mechanism, or other driving devices.

In some embodiments, referring to fig. 1, the lifting bed frame 200 includes a first base frame 201, four first vertical beams 202 are disposed on the first base frame 201, and the four first vertical beams 202 are distributed in a matrix (disposed on two sides of the front portion and two sides of the rear portion of the first base frame 201, respectively); the fixed bed frame 100 comprises a second base frame 101, wherein the second base frame 101 is provided with four vertical guides 102 matched with four first vertical beams 202, and the four first vertical beams 202 are respectively connected with the corresponding vertical guides 102 in a sliding and guiding manner. By the cooperation of the first vertical beam 202 with the vertical guide 102, it is ensured that the ascending and descending bed frame 200 always moves in the vertical direction and is prevented from being separated from the fixed bed frame 100 in the horizontal direction.

It should be noted that the lifting frame 200 is not limited to four vertical beams, and here, only the vertical beams at the four corners of the lifting frame 200 are referred to as the first vertical beam 202, and if other vertical beams are provided on the lifting frame 200, they are referred to as the second vertical beam, the third vertical beam, etc., and the fixed frame 100 may be further provided with vertical guides adapted to the other vertical beams.

In this embodiment, the first vertical beam 202 is a square tube, and the vertical guide 102 is an L-shaped plate attached to one corner of the square tube, which is relatively simple in structure. However, the structures of the first vertical beam 202 and the vertical guide 102 are not limited thereto, for example, in other embodiments, the first vertical beam 202 is cylindrical, the vertical guide 102 is a guide rod matched with the first vertical beam 202, and the guide rod is inserted into the corresponding first vertical beam 202; or, for example, in other embodiments, the first vertical beam 202 is provided with a sliding ring, the vertical guide 102 is a guide rod matched with the sliding ring, and the guide rod is plugged in the corresponding sliding ring.

In order to reduce friction and to make the ascending and descending of the ascending and descending bed frame 200 smoother, balls or needles may be provided on the mating surfaces of the first vertical beams 202 and the vertical guides 102, the balls or needles being provided on the first vertical beams 202 or on the vertical guides 102.

Further, in order to reinforce the structural strength of the ascending/descending bed frame 200, at least one connecting beam 203 is connected between the two first vertical beams 202 on the left side, between the two first vertical beams 202 on the right side, and between the two first vertical beams 202 on the rear side. For example, in fig. 1, a connecting beam 203 is connected between the middle portions of two first vertical beams 202 on the left side and between the middle portions of two first vertical beams 202 on the right side, and a connecting beam 203 is connected between the upper ends of two first vertical beams 202 on the rear side.

In some embodiments, see fig. 1 and 2, the top of the two first vertical beams 202 on the front side are provided with a connection part 204 protruding forwards, and the connection part 204 is used for connecting with a first driving device 301; one of the first driving devices 301 is connected to the center of the connection beam 203 on the rear side.

In the present embodiment, referring to fig. 1, the second chassis 101 of the fixed bed frame 100 includes two second longitudinal beams symmetrically arranged left and right, and a plurality of second cross beams connected between the two second longitudinal beams; the second longitudinal beam extends along the front-rear direction, and the second cross beam is perpendicular to the second longitudinal beam.

In the present embodiment, referring to fig. 1, the first chassis 201 of the lifting bed frame 200 includes two first longitudinal beams symmetrically arranged left and right, and a plurality of first cross beams connected between the two first longitudinal beams; the first longitudinal beam extends along the front-back direction, and the first cross beam is perpendicular to the first longitudinal beam.

In some preferred embodiments, referring to fig. 1, the bed lifting structure of the nursing bed further comprises two side rails 400, and the two side rails 400 are respectively connected to the left and right sides of the lifting frame 200. The side guard rails 400 are arranged, so that the user can be prevented from falling off the bed when turning over laterally, and the safety is improved; the side guard rail 400 is connected to the lifting frame 200, and the side guard rail 400 can be lifted along with the lifting frame 200, thereby always protecting the user and further improving the safety. In some embodiments, the lower side of the side rail 400 is pivotally connected to the lifting frame 200, and the side rail 400 is locked to the lifting frame 200 by a locking mechanism, so that the side rail 400 can be turned downward to allow a user to access the nursing bed from the side when necessary.

In some preferred embodiments, the bottom of the fixed bed frame 100 is provided with universal wheels 500 so as to facilitate the overall movement of the nursing bed, wherein the universal wheels 500 are preferably universal wheels 500 with a self-locking function.

Further, referring to fig. 1, the bed lifting structure of the nursing bed further comprises two bed-chair docking mechanisms 600, wherein the two bed-chair docking mechanisms 600 are symmetrically arranged at the lower part of the lifting bed frame 200 and are used for docking with the wheelchair 90 to lock the wheelchair 90. The bed-chair docking mechanism 600 is docked with the wheelchair 90, so that the lifting bed frame 200 can drive the wheelchair 90 to lift and prevent the wheelchair 90 from falling off during the lifting process.

Specifically, referring to fig. 3, the bed-chair docking mechanism 600 includes:

a support base 1 fixedly installed at the lower portion of the elevating frame 200 and supporting the wheelchair 90;

a rear stopper 2 (which may be but not limited to a plate, a pipe, etc.) provided at a rear side of the support base 1 and for stopping a rearward position of the wheelchair 90;

a locking piece 3 which is arranged at the front side of the supporting seat 1 and can move between a locking position and an unlocking position; the locking member blocks the forward movement of the wheelchair 90 when in the locked position and does not block the forward movement of the wheelchair 90 when in the unlocked position.

In practical application, a support beam or a support plate is arranged on the wheelchair 90 corresponding to the support seat 1, and when the wheelchair 90 is docked with the docking mechanism 600, the support beam or the support plate is supported by the support seat 1; thereby can drive the wheelchair through the support of supporting seat 1 to the wheelchair and go up and down along with the lift bedstead, and owing to the setting of back stopper 2 and locking piece 3, can avoid the wheelchair roll-off supporting seat 1 and fall to break away from the lift bedstead when preventing the wheelchair from going up and down along with the lift bedstead of bed, the security is high.

In some embodiments, the bed-chair docking mechanism 600 further comprises a second driving device 4 for driving the locking member 3 to move between the locking position and the unlocking position, thereby realizing automatic control of the locking member 3.

In some embodiments, see fig. 3, the locking member 3 is a self-locking hook, which is hinged with the lifting frame 200. So that the locking member 3 can swing between a locking position and an unlocking position, as shown in fig. 1 with the self-locking hook in the locking position; the front end of the self-locking hook is provided with a hook part, the front side surface of the hook part is a guide inclined surface, when the wheelchair moves backwards and is in butt joint, the guide inclined surface can be extruded, so that the self-locking hook automatically moves back, and when the wheelchair moves backwards to a proper position, the self-locking hook can reset and lock the wheelchair. For example, in fig. 1, the second driving device 4 is a push-pull electromagnet, and when the push-pull electromagnet is powered on, the self-locking hook is pulled to swing to the unlocking position, and when the push-pull electromagnet is powered off, a return spring on the push-pull electromagnet pushes the self-locking hook to return.

Further, the supporting seat 1 comprises a lower supporting plate 1.1 fixedly connected with the lifting bed frame 200 and a lower guide wheel set 1.2; the supporting seat 1 further comprises a plurality of guide posts 1.3 and lower guide wheel supports 1.4, the guide posts 1.3 are inserted on the lower supporting plate 1.1 in a sliding mode, the lower guide wheel supports 1.4 are fixedly connected with the tops of all the guide posts 1.3, and compression springs 1.5 are sleeved on the guide posts 1.3; the lower guide wheel set 1.2 is arranged on the lower guide wheel bracket 1.4. The friction between the lower guide wheel set 1.2 and the wheelchair can be reduced, so that the wheelchair can smoothly enter and exit; and compression spring 1.5 can play the cushioning effect on the one hand, can reduce the impact that produces in the lift process, improves the travelling comfort, and on the other hand, when the size of wheelchair had the error, the upper and lower position of lower direction wheelset 1.2 can adapt to the change of wheelchair size automatically to avoid having the error and can't realize the butt joint because the size of wheelchair.

In some preferred embodiments, see fig. 3, the bed-chair docking mechanism 600 further comprises an upper guide seat 5 disposed above the supporting seat 1, the upper guide seat 5 comprises an upper guide wheel supporting plate 5.1 fixedly connected to the lifting frame 200, and an upper guide wheel group 5.2 disposed at the bottom of the upper guide wheel supporting plate 5.1. The upper guide seat 5 can prevent the wheelchair from separating from the support seat 1 from the upper side, so that the safety is further improved, and the upper guide wheel set 5.2 can reduce the friction between the wheelchair and the wheelchair.

In some preferred embodiments, see fig. 3, the bed chair docking mechanism 600 further comprises a side guide wheel set 6 disposed at an outer side between the support base 1 and the upper guide base 5. The side guide wheel set 6 is arranged, so that the left position and the right position of the wheelchair can be limited, and the friction between the wheelchair and the wheelchair can be reduced.

In actual use, when the wheelchair docks with this bed chair docking mechanism 600, need adjust the position about the wheelchair earlier, just can guarantee that the wheelchair can get into bed chair docking mechanism 600 smoothly, in order to reduce the degree of difficulty of aiming at, improves convenient to use nature, in some preferred embodiments, see fig. 3, this bed chair docking mechanism 600 still includes:

the guide block 7 is arranged at one side close to the outside in front of the supporting seat 1; the front side surface of one end of the guide block 7 close to the supporting seat 1 is a guide inclined surface.

Due to the guiding effect of the guide block 7, during docking, accurate left-right alignment is not needed, and the guide block 7 can guide the inclined plane to provide inward guiding acting force for the wheelchair, so that the wheelchair is finally aligned to a docking position.

In some embodiments, see fig. 1, an electrical socket 8 is provided on the front side of the rear restraint 2, the electrical socket 8 being for electrical connection with a wheelchair to provide power to the wheelchair. When the wheelchair is docked with the bed-chair docking structure 100, the electric connector on the wheelchair is docked with the electric socket 8, so that the wheelchair can be docked, and the electric equipment on the wheelchair can work normally. Preferably, the electrical socket 8 is a magnetic socket so that electrical connections on the wheelchair can be easily disconnected from the electrical socket 8 when the wheelchair is moved forward for disconnection.

To ensure that the electrical connectors on the wheelchair are precisely aligned with the electrical socket 8 (especially when the electrical socket 8 is a magnetic socket), in some embodiments, an electromagnet 9 is provided on the front side of the rear restraint 2; in practical application, a soft iron piece which is mutually adsorbed with the electromagnet 9 is arranged on the wheelchair, and the electromagnet 9 is used for adsorbing the wheelchair soft iron piece, so that the wheelchair can be accurately positioned.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, which are substantially the same as the present invention.

Claims

1. The utility model provides a bed body elevation structure of nursing bed which characterized in that includes:

the driving assembly is used for driving the lifting bed frame to lift;

the two bed-chair docking mechanisms are symmetrically arranged at the lower part of the lifting bed frame and are used for docking with a wheelchair to lock the wheelchair; the bed chair docking mechanism includes: the supporting seat is fixedly arranged at the lower part of the lifting bed frame and is used for supporting the wheelchair; the supporting seat comprises a lower supporting plate fixedly connected with the lifting bedstead and a lower guide wheel set; the supporting seat further comprises a plurality of guide posts and a lower guide wheel support, the guide posts are inserted on the lower supporting plate in a sliding mode, the lower guide wheel support is fixedly connected with the tops of all the guide posts, and compression springs are sleeved on the guide posts; the guide wheel set is arranged on the lower guide wheel bracket.

2. The lifting structure of a bed body of a nursing bed as claimed in claim 1, wherein the driving assembly comprises at least three first driving devices, wherein the at least three first driving devices are arranged in a triangular shape, and the first driving devices are used for driving the lifting bed frame to lift.

3. The bed lifting structure of a nursing bed as claimed in claim 2, wherein the first driving means is a lifting motor having a lower end connected to the fixed bed frame and an upper end connected to the lifting bed frame.

4. The bed lifting structure of a nursing bed as claimed in claim 3, wherein the lifting motor has a lower end hinged to the fixed bed frame and an upper end hinged to the lifting bed frame.

5. The bed body lifting structure of a nursing bed as claimed in claim 1, wherein said lifting bed frame comprises a first bottom frame, four first vertical beams are disposed on said first bottom frame, and said four first vertical beams are distributed in a matrix; the fixed bed frame comprises a second underframe, four vertical guide pieces matched with the four first vertical beams are arranged on the second underframe, and the four first vertical beams are respectively connected with the corresponding vertical guide pieces in a sliding and guiding manner.

6. The bed body lifting structure of a nursing bed as claimed in claim 5, wherein at least one connecting beam is connected between the two first vertical beams on the left side, between the two first vertical beams on the right side, and between the two first vertical beams on the rear side.

7. The bed body lifting structure of a nursing bed as claimed in claim 1, further comprising two side guardrails connected to the left and right sides of the lifting bed frame, respectively.

8. The bed lifting structure of a nursing bed as claimed in claim 1, wherein the bed chair docking mechanism comprises: