CN113456375B

CN113456375B - Bed and sickbed using same

Info

Publication number: CN113456375B
Application number: CN202110771088.7A
Authority: CN
Inventors: 陈瑞云; 刘卫超; 杨慧
Original assignee: Henan Provincial Peoples Hospital
Current assignee: Henan Provincial Peoples Hospital
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2023-02-03
Anticipated expiration: 2041-07-08
Also published as: CN113456375A

Abstract

The invention relates to a bed and a sickbed using the same. The bed comprises a bed plate, a mattress is paved on the bed plate, a left guardrail and a right guardrail are respectively arranged on the left side and the right side of the bed plate, a bed tail guardrail is arranged on the rear side of the bed plate, a pitching mechanism is arranged below the bed plate, one of the left guardrail and the right guardrail is provided with an electrically driven lifting device, the other one of the left guardrail and the right guardrail is provided with an electromagnetic lock catch which is positioned above the mattress and is parallel to the top surface of the mattress, and the lifting device is connected with a crawling device for flexibly crawling on the top surface of the mattress and an electrically driven belt wheel mechanism connected on the left side of the crawling device. The invention realizes electric pitching, thus assisting the patient to sit and lie, and starting the function through the keys on the handle without the assistance of others; simultaneously, with the effect of the device of crawling of liftable down, the manual action of standing up for the disease of simulation attendant accomplishes the comfort and does not invade the purpose of occupying the space of sitting and lying, has the technical effect that improves the comfort of postoperative disease and the patient of being more convenient for stands up alone.

Description

Bed and sickbed using same

Technical Field

The invention belongs to the technical field of rehabilitation equipment, and particularly relates to a bed and a sickbed using the bed.

Background

At present, a hospital bed adopted by a postoperative patient in a hospital, a rehabilitation facility and a home is mainly composed of a bed frame 101, a bedside guardrail 102, a tailstock guardrail 103, a side guardrail 104, a supporting leg 105, a bed board 106 and a pitching mechanism 107 as shown in fig. 1 and fig. 2, wherein the pitching mechanism 107 can adjust one bed board close to the bedside to perform pitching motion so as to assist the patient to keep a sitting posture or adjust to a lying state with the help of other people. For postoperative patients, though the patients do not lose the ability of behaviors, the patients need to be assisted by family members and nurses to sit up and turn over on the bed due to the conditions of weakness, pipeline carrying and the like, the workload of the family members and nurses of the patients is increased to a certain extent, and the waste of medical resources is caused. In the existing medical institutions and rehabilitation institutions, in order to assist patients such as family members and medical staff to turn over, the cloth belts shown in fig. 3 are generally adopted and mainly comprise upper cloth belts 201 positioned at the cervical vertebrae or clavicle positions of the patients at the bed head and lower cloth belts 202 bound on the bed tail; wherein, the upper cloth belt 201 is always positioned between the patient and the mattress, so in order to improve the comfort of the fitting, a silk cloth belt is often adopted; the lower cloth strap 202 is usually made of cloth strips temporarily bound to the bed tail, the two ends of the cloth strips are bound to the bed tail support, and the middle part of the cloth strips freely falls on the quilt for the patient to grasp. However, the bed set can provide certain help to family members and medical staff, but cannot be used by patients independently. For general postoperative patients, although the patients have the problem of physical weakness, consciousness and basic behavior ability are not lost, and only strength is insufficient.

The prior patent CN110269781B provides a rehabilitation exercise air cushion bed, which consists of an arm movement device, a leg movement device, a bed body, a massage device and a control box, wherein the arm movement device, the leg movement device and the massage device are respectively arranged at the upper end of the bed body, and the control box is arranged at the lower end of the bed body. The bed board and the bed frame are hinged, so that the bed board can be adjusted according to the body position of a patient, and the inclination degree of the bed board can be more visually seen through the scale plate; the arm motion device can exercise the back-and-forth swing or the up-and-down stretching of the arm, the leg massage device can exercise the knee bending motion and the ankle motion of the patient, and the massage device can massage the back, the hip and the legs of the patient to prevent the muscle atrophy or the arterial varicosity. However, the bed in this patent greatly encroaches on the space on the patient's bed for the patient to lie down, resulting in an obstruction to the post-operative recovery of the patient's mind and body.

The patent TW1690314B discloses a sickbed turnover device, which comprises two movable protection frames, wherein the movable protection frames are respectively arranged at two opposite sides of a bed, each movable protection frame is provided with a base, a bed rod component, a rolling shaft component and two bed frame clamps, the rolling shaft component can be combined with a lining paper and can roll the lining paper by the operation of two motors so as to easily turn over a patient, the bed frame clamps can be arranged on any bed frame, the bed rod component can be overturned so as to conveniently move the patient to get on or off the bed, the movable protection frames can be disassembled and combined, the movable protection frames can be placed into a containing device, and therefore, the convenient sickbed turnover device has the effects of labor saving, convenience in assembly and convenience in carrying. However, in the patent, the bed sheet needs to be wound to realize the side turning of the patient, which is inconsistent with the regulation in the conventional medical care work, namely the patient needs to move to the left or right first and then turn over in the medical care specification, so that the discomfort of the patient can be increased, and the recovery period of the patient is prolonged; meanwhile, the bed sheet folding method adapted to the turning-over device is inconsistent with the conventional folding method, which can cause the rule change of the whole medical system and is not beneficial to the popularization of products.

Therefore, according to the research and study of actual work, it is found that in medical institutions and rehabilitation institutions, a bed tool which can realize the patent functions without increasing the discomfort of patients after operation is needed to assist the patients to realize single-person getting up and lying down and turning over.

Disclosure of Invention

The invention aims to provide a bed which is used for improving the comfort of a patient after operation and facilitating the patient to turn over independently.

The technical scheme of the bed is as follows:

bed, including the bed board, the bed board upper berth is equipped with the mattress, and the bed board left and right sides is provided with left guardrail and right guardrail respectively, and the bed board rear is provided with tailstock guardrail, and the below of bed board is equipped with every single move mechanism, wherein:

one of the left guardrail and the right guardrail is provided with an electrically driven lifting device, the other guardrail is provided with an electromagnetic lock catch which is positioned above the mattress and is flush with the top surface of the mattress, the lifting device is in supporting connection with a crawling device for telescopically crawling on the top surface of the mattress and an electrically driven belt wheel mechanism connected to the left side of the crawling device, the belt wheel mechanism and the crawling device synchronously move left and right, and the crawling device is provided with a lock hole matched with the electromagnetic lock catch;

the tailstock guardrail is fixed with and is used for the drive pitching machine of every single move mechanism, be located tailstock guardrail and flexible telescopic link around and, connect at the handle of telescopic link front end and connect the controlling means at the telescopic link rear end, controlling means connects pitching machine, the automatically controlled part of telescopic link, elevating gear's automatically controlled part, the automatically controlled part of the device of crawling and the automatically controlled part of electromagnetism hasp, controlling means is used for carrying out following instruction:

under the control of a wireless instruction of the bracelet, the telescopic rod is controlled to stretch back and forth; and

after the control switch on the handle is triggered, the pitching motor, the lifting device, the crawling device and the electromagnetic lock catch are controlled to be started or closed.

Alternatively, the lifting device is located in the left guardrail, the lifting device comprises a vertical device and rotates a vertical ball screw installed in the left guardrail, the lower end of the vertical ball screw is in transmission connection with a lifting motor connected with the control device, the vertical ball screw is in screw transmission connection with a lifting base installed in the left guardrail in an up-down straight line guiding mode, and the crawling device is connected to the lifting base.

Alternatively, a locking channel adjacent to the upper side of the top surface of the mattress is formed in the right guardrail, the electromagnetic lock catch is installed on the upper side of the inner wall and/or the lower side of the inner wall of the locking channel, the electromagnetic lock catch comprises an electromagnetic push rod which stretches up and down and is connected with the control device, and the output end of the electromagnetic push rod is connected with a lock tongue which is used for extending out of the inner wall of the locking channel and is matched with the lock hole plug bush.

Alternatively, a left and right through guide channel is formed in the lifting base, the crawling device comprises a crawling trolley which is pulled and installed in the guide channel along the left and right directions, a locking mechanism which prevents the crawling trolley from being released from the left side of the guide channel and is unlocked when the crawling trolley moves rightwards is arranged in the guide channel, a driven belt wheel is rotatably installed on the left side of the crawling trolley, a belt which is wound around a belt wheel and is connected to a driving belt wheel below the bed board is rotatably connected to the driven belt wheel, the driving belt wheel is connected with a belt wheel motor which is used for driving the driving belt wheel to rotate and is connected with a control device, the driving belt wheel and the belt wheel motor are supported on a driven bracket, and the driven bracket is connected with a push-pull device which is used for pushing and pulling the driven bracket leftwards and rightwards.

Alternatively, the push-pull device comprises two pulleys arranged on the left side and the right side of the bed board and a transmission rope connected with the pulleys in a surrounding mode, one side of the transmission rope is connected with the driven bracket, the other side of the transmission rope is connected with the driving bracket, and the driving bracket is connected with a screw rod mechanism which moves left and right and is electrically driven.

Alternatively, the driven bracket, the transmission rope, the driving bracket and the screw rod mechanism are sequentially arranged from bottom to top, and the screw rod mechanism is positioned in the bed plate.

Alternatively, part or all of the crawling trolley is made of iron-based magnetic materials, the screw mechanism comprises a crawling motor which is located on the left side of the bed plate and connected with the control device and a horizontal ball screw which extends left and right and is connected with the right end of the crawling motor, the horizontal ball screw is in screw transmission connection with a translation base which is connected into the bed plate in a left-right linear guide moving mode, the lower side of the translation base is connected with the driving bracket, and an electromagnet connected with the control device is arranged on the upper side of the translation base.

Alternatively, the right end of the horizontal ball screw and the right pulley are located in the right guardrail below the right end of the locking channel.

Alternatively, a photoelectric switch is mounted on the lifting device.

The invention also aims to provide a sickbed adopting the beddings, and the technical scheme is as follows:

sickbed, including bedstead and the bed spare that sets up on it, the bed spare includes the bed board, and the bed board upper berth is equipped with the bed-pad, and the bed board left and right sides is provided with left guardrail and right guardrail respectively, and the bed board rear is provided with tailstock guardrail, and the below of bed board is equipped with every single move mechanism, wherein:

one of the left guardrail and the right guardrail is provided with an electrically driven lifting device, the other guardrail is provided with an electromagnetic lock catch which is positioned above the mattress and is flush with the top surface of the mattress, the lifting device is in bearing connection with a crawling device for telescopically crawling on the top surface of the mattress and an electrically driven belt wheel mechanism connected to the left side of the crawling device, the belt wheel mechanism and the crawling device synchronously move left and right, and the crawling device is provided with a lock hole matched with the electromagnetic lock catch;

Alternatively, the lifting device is positioned in the left guardrail, the lifting device comprises a vertical ball screw which is vertically arranged and is rotatably installed in the left guardrail, the lower end of the vertical ball screw is in transmission connection with a lifting motor connected with the control device, the vertical ball screw is in screw transmission connection with a lifting base which is installed in the left guardrail in an up-and-down linear guide mode, and the crawling device is connected to the lifting base.

Alternatively, the crawling trolley is partially or completely made of iron-based magnetic materials, the screw mechanism comprises a crawling motor which is located on the left side of the bed plate and connected with the control device and a horizontal ball screw which extends left and right and is connected with the right end of the crawling motor, the horizontal ball screw is in screw transmission connection with a translation base which is connected with the left and right in the bed plate in a linear guide moving mode, the lower side of the translation base is connected with the driving bracket, and an electromagnet connected with the control device is arranged on the upper side of the translation base.

Alternatively, the right end of the horizontal ball screw and the right side pulley are located in the right guardrail below the right end of the locking channel.

Alternatively, a photoelectric switch is mounted on the lifting device.

The invention has the beneficial effects that:

the invention changes the driving mode of the existing hand-operated pitching mechanism into an electric mode to realize electric pitching, thus assisting the patient to sit and lie and starting the function through the keys on the handle without the assistance of others; meanwhile, under the action of the liftable crawling device, the action of turning over the patient by an attendant manually is simulated, so that the aim of comfort and no invasion of a sitting and lying space is fulfilled, and the invention has the technical effects of improving the comfort of the postoperative patient and facilitating the independent turning over of the patient.

Drawings

Figure 1 is a schematic view of a prior art hospital bed;

FIG. 2 is a schematic view of a prior art hospital bed from another perspective;

FIG. 3 is a schematic view of a prior art bedding set;

figure 4 is a schematic view of a hospital bed according to the invention;

FIG. 5 is a schematic view of a bedding set according to the present invention;

FIG. 6 is an enlarged view at A in FIG. 5;

fig. 7 is a top view of the creeper truck of fig. 5.

Detailed Description

Referring to fig. 4 to 7, the bed of the present embodiment still uses a bed frame 301 of a conventional bed, which is different from the prior art mainly in the bed.

The bed still keeps a bed board 302, a mattress 303 laid on the bed board, a left guardrail 304 and a right guardrail 305 arranged on the left and right sides, a tailstock guardrail 306 arranged on the rear side, and a pitching mechanism 307 arranged on the lower side, and is additionally provided with three functional modules, namely a grip strength sensing type body position changing auxiliary device for assisting control and exercising arm strength of a patient, a pitching control device for assisting the patient in sitting and lying control, and a turning device for assisting the patient in turning over one side, which are described in combination with fig. 4 to 7 one by one.

Grip induction type position conversion auxiliary device is including fixing on tailstock guardrail 306 and telescopic link 308 around just, and pneumatic telescopic link is chooseed for use to this telescopic link 308 to stretch out and draw back with electric control mode, telescopic link 308 can set up the left side or the right side at tailstock guardrail 306 according to the demand. The requirement mainly considers the hand habits of patients, for example, the right-hand is arranged on the right side, and the left-hand is arranged on the left side. The front end of the telescopic rod 308 is connected with a handle 310, and the rear end is connected with a control device 309 fixed at the rear side of the bed guardrail. Pressure sensor, intelligent chip and led lamp are placed in handle 310, and pressure sensor imbeds handle 310 respectively, and the department of shaking hands uses soft rubber, and intelligent chip is in controlling means 309, and the led lamp can be divided into three grades according to patient's grip and show with red yellow green light. The intelligent chip is connected with the pressure sensor and the LED lamp (red, yellow and green) and used for receiving pressure signals sent by the left pressure sensor and the right pressure sensor, evaluating the left hand and the right hand of a patient through the pressure signals according to the grip force of the patient and lighting corresponding signal lamps, and then giving proper pulling force to assist the patient to slowly rise. Can provide the reference for patient's postoperative arm strength is taken exercise on the one hand, and on the other hand facilitates for the position transform of patient bed, still can alleviate patient's family members and nurse work burden. An intelligent chip built in the control device 309 inputs and outputs control signals through a wireless protocol, and is connected with an intelligent bracelet worn on the wrist of a patient on an input interface, so that when the patient inputs signals to the intelligent chip through modes of inertia control, touch control and the like, the intelligent chip can start the telescopic rod 308; meanwhile, on the output interface, the intelligent chip can control the pitching control device 309 and the turning-over device to execute relevant instructions.

The pitch control device 309 is added with an electrically driven pitch motor 311 on the basis of the existing pitch mechanism 307, the pitch motor 311 is positioned at the lower side of the bed tail, and the pitch motor 311 is also electrically connected to the control device 309 in a control manner. When the smart chip receives the corresponding input on the smart band and/or the grip 310, the pitching motor 311 drives the pitching mechanism 307 to move, so as to adjust the pitching and lying of the patient.

The turning device can be arranged singly, but preferably, the force point when the nurse turns over the patient can be arranged in a plurality of ways, such as arranging one at the cervical vertebra, the lumbar vertebra, the knee, the ankle and the like of the patient respectively, so as to be more convenient for the turning action of the patient. The turn-over device is mainly divided into a left side portion associated with left guardrail 304 and a right side portion associated with right guardrail 305. Wherein:

the right side portion comprises an electromagnetic lock catch 312 installed on the right guardrail 305, a locking channel 313 adjacent to the upper portion of the top surface of the mattress 303 is formed in the right guardrail 305, the electromagnetic lock catch 312 is installed on the upper side of the inner wall of the locking channel 313, the electromagnetic lock catch 312 comprises an electromagnetic push rod which stretches up and down and is connected with the control device 309, and the output end of the electromagnetic push rod is connected with a lock tongue which is used for extending out of the inner wall of the locking channel 313 and is in plug-in fit with the lock hole 334.

The left part comprises a lifting device arranged on the left guardrail 304, the lifting device is connected with a crawling device used for telescopically crawling on the top surface of the mattress 303 in a supporting mode and an electrically-driven belt wheel mechanism connected to the left side of the crawling device, the belt wheel mechanism and the crawling device move left and right synchronously, and a lock hole matched with the electromagnetic lock catch 312 is formed in the crawling device. The lifting device comprises a vertical ball screw 314 which is vertically arranged and rotatably installed in the left guardrail 304, the lower end of the vertical ball screw 314 is in transmission connection with a lifting motor 315 which is connected with the control device 309, the vertical ball screw 314 is in screw transmission connection with a lifting base 316 which is vertically and linearly guided and installed in the left guardrail 304, and the crawling device is connected to the lifting base 316. The lifting base 316 is provided with a left-right through guide channel 317 and a photoelectric switch 318 located below the guide channel 317, the crawling device comprises a crawling trolley 319 which is installed in the guide channel 317 in a pulling mode along the left-right direction, a locking mechanism which prevents the crawling trolley 319 from coming off from the left side of the guide channel and is unlocked when the crawling trolley 319 moves rightwards is arranged in the guide channel 317, a driven pulley 320 is rotatably installed on the left side of the crawling trolley 319, a belt 321 which is connected to a driving pulley 323 below the bedplate 302 after being turned around a pulley 322 on the left lower side of the bedplate 302 is connected to the driven pulley 320 in a transmission mode, the driving pulley 323 is connected with a pulley motor which is used for driving the driving pulley 323 to rotate and is connected with the control device 309, the driving pulley 323 and the pulley motor are supported on a driven bracket 325, and the driven bracket 325 is connected with a push-pull device used for pushing and pulling the driven bracket 325 leftwards and rightwards. The push-pull device comprises two pulleys 326 arranged on the left side and the right side of the bed plate 302 and a transmission rope 327 connected with the pulleys in a surrounding mode, one side of the transmission rope 327 is connected with the driven bracket 325, the other side of the transmission rope 327 is connected with a driving bracket 328, and the driving bracket 328 is connected with a screw rod mechanism which moves left and right and is electrically driven. The driven bracket 325, the transmission rope 327, the driving bracket 328 and the screw mechanism are sequentially arranged from bottom to top, and the screw mechanism is positioned in the bed plate 302. The screw mechanism comprises a crawling motor 329 positioned on the left side of the bed plate 302 and connected with the control device 309 and a horizontal ball screw 330 extending left and right and connected with the right end of the crawling motor, the horizontal ball screw 330 is in screw transmission connection with a translation base 331 connected in the bed plate 302 in a left-right linear guide moving mode, the lower side of the translation base 331 is connected with a driving bracket 328, and an electromagnetic type guide magnet connected with the control device 309 is arranged on the upper side of the translation base 331. The right end of horizontal ball screw 330 and the right side pulley are located in right guardrail 305 below the right end of locking channel 313.

Preferably, the crawling trolley 319 comprises a trolley body 332 made of cast iron, two groups of wheels 333 which are distributed at intervals are rotatably connected to the trolley body 332, locking holes 334 are formed between the two groups of wheels 333, the wheels 333 are all in a waist drum shape and mainly comprise wheel body parts at two ends, a conical wheel shaft part and a necking part which is rotatably connected to the trolley body 332, and the whole wheels 333 are made of engineering plastics; the left side of the vehicle body 332 is connected with a wheel carrier 335 through a connecting rod 335 which is hinged in an offset manner, the right side of the wheel carrier 335 is in concave-convex fit with the left side of the vehicle body 332 in an arc surface, specifically, the right side of the wheel carrier 335 is provided with an arc-shaped groove, and the left side of the vehicle body 332 is provided with an arc-shaped end part; the driven pulley is rotatably connected to the left side of the wheel carrier 335.

Preferably, a receiving groove 345 for receiving the vehicle body 332 of the crawler 319 is formed at the right side of the elevating base 316, the receiving groove 345 is communicated with the upper side of the guide passage 317, and a permanent magnet or an electromagnetic receiving magnet 336 connected to the controller 309 is formed at the left side wall of the receiving groove 345.

Preferably, the lifting base 316 is further provided with an avoiding channel 324 located at the left side of the guiding channel 317 and communicated with the guiding channel 317, a guiding belt wheel 337 located below the left port of the guiding channel 317 is arranged in the avoiding channel 324, the guiding belt wheels 337 are distributed at intervals from top to bottom, the upper and lower guiding belt wheels 337 are located at the right side of the middle guiding belt wheels 337, and the middle guiding belt wheels 337 are flush with each other. A guide pulley 338 which is positioned behind the guide channel 317 and is rotatably connected to the lifting base 316 is further arranged in the avoidance channel, and the guide pulley 338 is flush with the top of the driven pulley 320. The locking mechanism is positioned at the upper side of the left port of the guide channel 317, the locking mechanism comprises a lever 344 which is rotationally connected to the lifting base 316 around an axis extending back and forth, the upper section of the lever 344 is connected with a return spring 339 positioned at the right side in an abutting mode, and the right side of the upper section is also provided with an in-place stop table 340 for preventing the upper section from continuously swinging rightwards; the lower section is more than the upper section, can extend into the mounting groove on the right side of the driven belt wheel and is stopped on the groove bottom on the right side of the mounting groove. The lower side of the lifting base 316 is further connected with a vertical tensioning rod 341 which is located on the left side and extends downwards, the lower end of the vertical tensioning rod 341 is connected with a tensioning wheel 342 which is tensioned on the belt 321 and ascends and descends along with the lifting base 316, a fixed belt wheel 343 which is located between the lifting base 316 and the steering belt wheel 322 is installed between the vertical tensioning rod 341 and the vertical screw rod, and the fixed belt wheel 343 is rotatably installed in the left guardrail 304 and is located below the top surface side of the mattress 303.

When the bed is used, the intelligent chip controls the telescopic rod 308 to stretch back and forth under the control of the wireless instruction of the bracelet; after a patient grasps the grip 310, the smart chip controls the pitch motor 311, the lifting device, the crawling device and the electromagnetic lock catch 312 to be started or closed by triggering the control switch on the grip 310. Particularly, when the person needs to turn over, the lifting motor 315 is started first, so that the lifting base 316 descends until the photoelectric switch 318 is triggered by the shielding of the bedding 303; then the crawling motor 329 is started, the accommodating magnet 336 is powered off, the guiding magnet is powered on, the wheel carrier 335 retracts a little bit to the left, the vehicle body 332 and the wheel carrier 335 are in butt joint, then the driving bracket 328 stops moving to the left, and the vehicle body 332 is captured by the guiding magnet; then, under the action of the horizontal ball screw 330, the translation base 331 drives the belt wheel mechanism and the crawling trolley to crawl rightwards together above the mattress 303 until the crawling trolley 319 enters the locking channel 313; then the crawling motor 329 is turned off, the electromagnetic lock catch 312 is started, and the crawling trolley 319 is locked on the right guardrail 305; then, starting the belt wheel motor to enable the belt 321 to rotate anticlockwise, and applying an auxiliary force for leftward translation to the patient until the belt is translated in place; the pulley motor is then controlled to reverse and the lift motor 315 is activated so that the lift base 316 is raised to assist the patient in rolling his or her side to the right.

The above description is only about the preferred embodiment of the present invention, but it should not be understood as limiting the claims, and the present invention may be modified in other structures, not limited to the above structures. In general, all changes which come within the scope of the invention are intended to be embraced therein.

Claims

1. The bed comprises a bed board, a mattress is laid on the bed board, a left guardrail and a right guardrail are respectively arranged at the left and the right of the bed board, a bed tail guardrail is arranged at the rear of the bed board, a pitching mechanism is arranged below the bed board, and the bed is characterized in that,

after the control switch on the handle is triggered, the pitching motor, the lifting device, the crawling device and the electromagnetic lock catch are controlled to be started or closed;

the lifting device is positioned in the left guardrail and comprises a vertical ball screw which is vertically arranged and rotatably installed in the left guardrail, the lower end of the vertical ball screw is in transmission connection with a lifting motor connected with the control device, the vertical ball screw is in screw transmission connection with a lifting base which is installed in the left guardrail in a vertically straight line guiding manner, and the crawling device is connected to the lifting base;

the lifting base is provided with a left-right through guide channel, the crawling device comprises a crawling trolley which is installed in the guide channel in a left-right drawing mode, a locking mechanism which prevents the crawling trolley from coming off from the left side of the guide channel and is unlocked when the crawling trolley moves rightwards is arranged in the guide channel, a driven belt wheel is rotatably installed on the left side of the crawling trolley, a belt which is wound around a steering belt wheel at the left lower part of the bed board and is connected onto a driving belt wheel below the bed board is in transmission connection with the driven belt wheel, the driving belt wheel is connected with a belt wheel motor which is used for driving the driving belt wheel to rotate and is connected with a control device, the driving belt wheel and the belt wheel motor are supported on a driven bracket, and the driven bracket is connected with a push-pull device which is used for pushing and pulling the driven bracket leftwards and rightwards;

the push-pull device comprises two pulleys arranged on the left side and the right side of the bed plate and a transmission rope which is connected with the pulleys in a surrounding manner, one side of the transmission rope is connected with the driven bracket, the other side of the transmission rope is connected with a driving bracket, and the driving bracket is connected with a screw rod mechanism which moves left and right and is electrically driven;

the driven bracket, the transmission rope, the driving bracket and the screw rod mechanism are sequentially arranged from bottom to top, and the screw rod mechanism is positioned in the bed plate;

the part or all of the crawling trolley is made of iron-based magnetic materials, the screw mechanism comprises a crawling motor which is located on the left side of the bed plate and connected with the control device and a horizontal ball screw which extends leftwards and rightwards and is connected with the right end of the crawling motor, the horizontal ball screw is in screw transmission connection with a translation base which is connected into the bed plate in a left-right linear guide moving mode, the lower side of the translation base is connected with a driving bracket, and an electromagnet connected with the control device is arranged on the upper side of the translation base.

2. The bedding of claim 1, wherein a locking channel is arranged on the right guardrail and is adjacent to the upper part of the top surface of the mattress, the electromagnetic lock catch is arranged on the upper side and/or the lower side of the inner wall of the locking channel, the electromagnetic lock catch comprises an electromagnetic push rod which stretches up and down and is connected with a control device, and the output end of the electromagnetic push rod is connected with a lock tongue which is used for extending out of the inner wall of the locking channel and is matched with the lock hole plug bush.

3. The bedding set forth in claim 1 wherein the right end of the horizontal ball screw and the right side pulley are located in the right guardrail below the right end of the locking channel.

4. A bed accessory as claimed in any one of claims 1 to 3, in which a photoelectric switch is mounted on the lifting means.

5. Hospital bed comprising a bedframe, characterized in that the bedframe is provided with a bed according to any of the claims 1-4.