CN110101523B

CN110101523B - Medical turn-over device for automatically assisting patient to turn over

Info

Publication number: CN110101523B
Application number: CN201910493683.1A
Authority: CN
Inventors: 宋桂芹; 吕守礼; 梁海明
Original assignee: Individual
Current assignee: Song Guiqin
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-11-27
Anticipated expiration: 2039-06-06
Also published as: CN110101523A

Abstract

The invention discloses a medical turn-over device for automatically assisting a patient to turn over, which comprises a bed body, wherein a turn-over cavity with an upward opening is arranged in the bed body, the bottom wall of the turn-over cavity is communicated with and provided with an auxiliary cavity, arc blocks are symmetrically and fixedly arranged on the front and back of the bottom surface of the turn-over cavity, side plates are arranged on the arc blocks in a sliding manner, when a hand wheel rotates, the hand wheel drives a first cone pulley to rotate through a power rod, the first cone pulley drives a rotating rod to rotate through a second cone pulley, the rotating rod drives a control block to rotate through a second gear and the first gear, a rotating mechanism is arranged in the turn-over cavity, a main plate and side plates are hinged in the rotating mechanism, the side plates can be pressed on the arc blocks to rotate after the control block rotates, an included angle is formed between the main plate and the side plates, the turn-over angle is increased, the, the angle can be adjusted according to different patients to provide a comfortable sitting posture for the patients.

Description

Medical turn-over device for automatically assisting patient to turn over

Technical Field

The invention relates to the field of medical appliances, in particular to a medical turn-over device for automatically assisting a patient to turn over.

Background

At present, for old people, pregnant women and patients who are inconvenient to move and have bed-ridden for a long time, the patients are difficult to turn over, stand up and sit up in bed due to high paraplegia, stroke, hemiplegia and other causes, the traditional treatment method is that medical care personnel directly rotate the bodies of the patients to achieve the effect, and thus the labor intensity and the burden of the medical care personnel or nursing families are very large.

The general medical auxiliary body-turning device adopts a flat plate design, the patient is not protected and limited when the patient is assisted to turn over, the body of the patient is easy to roll or slide, the risk that the body of the patient is damaged when the body of the patient collides with a bed body is increased, secondly, the general medical auxiliary body-turning device is difficult to help the patient to sit up, the patient directly leans against the bed body or directly sits up, the labor intensity of medical workers is increased, the patient cannot sit up comfortably, meanwhile, the bed body of the general medical auxiliary body-turning device cannot increase the area of the general medical auxiliary body-turning device, medical appliances cannot be placed everywhere when emergency rescue is needed, and the medical auxiliary body-turning device is very.

Disclosure of Invention

The invention aims to provide a medical turn-over device for automatically assisting a patient to turn over, which is used for overcoming the defects in the prior art.

The medical turn-over device for automatically assisting the turn-over of the patient comprises a bed body and is characterized in that: the turning bed is characterized in that a turning cavity with an upward opening is arranged in the bed body, an auxiliary cavity is communicated with the bottom wall of the turning cavity, arc blocks are symmetrically and fixedly installed on the front and back of the bottom surface of the turning cavity, side plates are slidably installed on the arc blocks, a main plate is hinged and installed between the side plates on the left side and the right side, a rotating mechanism capable of assisting a patient to turn over is arranged between the auxiliary cavity and the back side surface of the bed body, the rotating mechanism comprises a control block fixedly installed on the bottom surface of the main plate, a first gear is fixedly installed on the right side surface of the control block, a rotating rod is rotatably installed on the inner wall of the right side of the auxiliary cavity, a second gear is fixedly installed on the rotating rod and meshed with the first gear, when the rotating rod rotates, the rotating rod drives the first gear to rotate through the second gear, and the first gear drives the, the function of assisting the patient to turn over is realized;

the mainboard bilateral symmetry is equipped with the connecting block, connecting block right flank fixed mounting rotor plate, be equipped with in the rotor plate and support by the level the extension mechanism of rotor plate, the diapire in supplementary chamber with the intercommunication is equipped with the sliding tray between the bed body bottom surface, the sliding tray right side is equipped with can jack-up be used for placing sitting up patient's low limbs the pushing mechanism of rotor plate, be equipped with the supporting mechanism that can help patient to sit up in the left side inner wall in supplementary chamber.

On the basis of the technical scheme, the left side surface and the right side surface of the main board are symmetrically provided with rotating grooves, the inner wall of the front side of each rotating groove is fixedly provided with a limiting rod, the connecting block is internally provided with a limiting groove, and the limiting rods and the limiting grooves are installed in a sliding mode.

On the basis of the technical scheme, the rotating mechanism consists of a power rod, a hand-operated wheel, a first cone pulley and a second cone pulley, the inner wall of the front side of the auxiliary cavity and the front side of the bed body are rotatably installed between the front side faces of the power rod, the front side face of the power rod is fixedly installed on the hand-operated wheel, the rear side of the power rod is fixedly installed on the first cone pulley, the left side face of the rotating rod is fixedly installed on the second cone pulley, and the first cone pulley is meshed with the second cone pulley.

On the basis of the technical scheme, a pressing groove is formed in the rear side face of the bed body and located above the power rod, a clamping block is installed in the pressing groove in a sliding mode, and a clamping groove is formed in the bottom face of the clamping block.

On the basis of the technical scheme, the supporting mechanism consists of a lifting groove, a motor, a force transmission rod, a power block, a vertical groove, a transverse rod, a top plate, a top groove and a rolling ball, the lifting groove is arranged on the inner wall of the left side of the auxiliary cavity, the motor is arranged in the wall of the bottom of the lifting groove, the force transmission rod is fixedly installed on the top surface of an upward output shaft of the motor, the force transmission rod extends upwards and penetrates into the top wall of the lifting groove, the power block is installed on the force transmission rod in a threaded manner, the vertical groove is communicated between the lifting groove and the auxiliary cavity, the transverse rod is installed in the vertical groove in a sliding manner, the transverse rod is fixedly connected with the power block, the top rod is installed in the sliding groove in a sliding manner, the transverse rod is fixedly connected with the top rod, the left side surface of the connecting block, the top surface of the ejector rod is hinged with the rolling ball, and the rolling ball is slidably arranged in the ejector groove.

On the basis of the technical scheme, the pushing mechanism comprises an engagement groove, a transmission shaft, a third bevel wheel, a pushing block, a thread groove, a threaded rod, a fourth bevel wheel and a friction layer, the engagement groove is communicated with the right side surface of the bed body, the transmission shaft is rotatably installed on the inner wall of the rear side of the engagement groove, the third bevel wheel is fixedly installed on the front side surface of the transmission shaft, the third bevel wheel is engaged with the sliding groove, the pushing block is slidably installed in the engagement groove, the thread groove is formed in the pushing block, the threaded rod is installed in the thread groove, the fourth bevel wheel is fixedly installed on the left side surface of the threaded rod, the fourth bevel wheel is engaged with the third bevel wheel, and the friction layer is fixedly installed on the right side surface of the rotating plate.

On the basis of the technical scheme, the rear columns are symmetrically and fixedly installed on the left side of the bottom surface of the bed body front and back, the reversing rod is rotatably installed in the bottom surface of the rear column, the bottom surface of the reversing rod is rotatably installed in the rear legs, the front legs are symmetrically and fixedly installed on the right side of the bottom surface of the bed body front and back, the front and back rear legs and the front and back front legs are internally provided with four same accommodating cavities respectively, a rotating shaft is rotatably installed between the front and back inner walls of the accommodating cavities, and rolling wheels are fixedly installed on the rotating.

On the basis of the technical scheme, the extension mechanism comprises holding tank, bracing piece, support chamber, extension pole, spring chamber, spring piece, spring and constant head tank, be equipped with the opening left in the rotor plate the holding tank, articulated installation between the inner wall around the holding tank the bracing piece, be equipped with in the bracing piece support the chamber, support intracavity slidable mounting the extension pole, the interior bilateral symmetry of extension pole is equipped with the spring chamber, spring intracavity slidable mounting the spring piece, the spring piece with fixed mounting between the spring chamber the spring, it is equipped with to support the chamber bilateral symmetry the constant head tank.

The invention has the beneficial effects that: the turning cavity of the invention is internally provided with a rotating mechanism, a main plate and a side plate are hinged in the rotating mechanism, after a control block rotates, the side plate can be pressed on an arc block to rotate, so that an included angle is formed between the main plate and the side plate, the turning angle is increased, and the patient is prevented from colliding with a bed body to be damaged when turning over, then a supporting mechanism and a pushing mechanism are also arranged in a bed head, a top plate and a rotating plate can be automatically lifted when the patient needs to sit, the top plate lifts up the back of the patient, the rotating plate rotates to lift up the lower limbs of the patient, a comfortable sitting posture can be provided for the patient according to different patient adjustment angles, an extension mechanism is also arranged in the rotating plate, the rotating plate can be horizontally supported when the patient needs to take first aid, and the.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 according to the present invention;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic cross-sectional view taken along the line C-C of FIG. 1 in accordance with the present invention;

FIG. 5 is a schematic cross-sectional view of the spreader bar of the present invention with the spreader mechanism in operation;

fig. 6 is an enlarged schematic view of the invention at D in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Referring to fig. 1-6, a medical turn-over device for automatically assisting a patient in turning over according to an embodiment of the present invention comprises a bed body 11, a turn-over cavity 53 with an upward opening is arranged in the bed body 11, an auxiliary cavity 20 is communicated with the bottom wall of the turn-over cavity 53, arc blocks 48 are symmetrically and fixedly mounted on the front and back of the bottom surface of the turn-over cavity 53, side plates 56 are slidably mounted on the arc blocks 48, a main plate 49 is hinged between the left side plate 56 and the right side plate 56, a rotating mechanism 102 capable of assisting the patient in turning over is arranged between the auxiliary cavity 20 and the back side surface of the bed body 11, the rotating mechanism 102 comprises a control block 47 fixedly mounted on the bottom surface of the main plate 49, a first gear 41 is fixedly mounted on the right side surface of the control block 47, a rotating rod 43 is rotatably mounted on the inner wall of the right side of the auxiliary cavity 20, a second gear 42 is fixedly, when dwang 43 rotates, dwang 43 passes through second gear 42 drives first gear 41 rotates, first gear 41 passes through control block 47 drives mainboard 49 rotates around control block 47 front and back, has realized the function that supplementary patient stands up, mainboard 49 bilateral symmetry is equipped with connecting block 58, connecting block 58 right flank fixed mounting rotor plate 39, be equipped with ability horizontal support in the rotor plate 39 the extension mechanism 103 of rotor plate 39, the diapire of supplementary chamber 20 with the intercommunication is equipped with sliding tray 21 between the bed body 11 bottom surface, sliding tray 21 right side is equipped with can jack up and is used for placing sitting up patient's low limbs the pushing mechanism 104 of rotor plate 39, be equipped with the supporting mechanism 101 that can help patient to sit up in the left side inner wall of supplementary chamber 20.

In addition, in one embodiment, the main plate 49 is symmetrically provided with a rotation groove 57 on the left and right sides, a limiting rod 60 is fixedly mounted on the inner wall of the front side of the rotation groove 57, a limiting groove 59 is formed in the connecting block 58, the limiting rod 60 and the limiting groove 59 are slidably mounted, and when the main plate 49 is driven by the rotation mechanism 102 to rotate left and right, the limiting rod 60 slides in the limiting groove 59, so that the connecting block 58 cannot rotate.

In addition, in one embodiment, the rotating mechanism 102 further comprises a power rod 45 rotatably installed between the inner wall of the front side of the auxiliary chamber 20 and the front side of the bed 11, the front side surface of the power rod 45 is fixedly provided with a hand-operated wheel 61, the rear side of the power rod 45 is fixedly provided with a first conical wheel 46, the second bevel wheel 44 is fixedly installed on the left side surface of the rotating rod 43, the first bevel wheel 46 is engaged with the second bevel wheel 44, when medical personnel manually rotate hand wheel 61, hand wheel 61 passes through power pole 45 and drives first cone pulley 46 and rotate, first cone pulley 46 drives dwang 43 through second cone pulley 44 and rotates, dwang 43 drives control block 47 through second gear 42 and first gear 41 and rotates, control block 47 rotates and drives mainboard 49 and rotate, mainboard 49 rotates and makes left and right sides board 56 rotate on circular arc piece 48, mainboard 49 and curb plate 56 form the contained angle, patient slides to the contained angle and has realized the function of supplementary patient and stand up.

In addition, in one embodiment, a pressing groove 64 is arranged in the rear side surface of the bed body 11 and above the power rod 45, a clamping block 63 is slidably mounted in the pressing groove 64, a clamping groove 62 is arranged on the bottom surface of the clamping block 63, when the medical staff operates the rotating mechanism 102 to turn over the patient, the clamping block 63 is pushed downwards to clamp the clamping groove 62 on the hand-operated wheel 61, and the rotating mechanism 102 is prevented from being reversely reset due to pressure generated on the main board 49 when the patient turns over the body.

In addition, in one embodiment, the supporting mechanism 101 further includes an ascending groove 12 disposed on the inner wall of the left side of the auxiliary cavity 20, a motor 14 is disposed in the bottom wall of the ascending groove 12, a force transmission rod 55 is fixedly mounted on the top surface of an upward output shaft of the motor 14, the force transmission rod 55 extends upward and penetrates into the top wall of the ascending groove 12, a power block 13 is mounted on the force transmission rod 55 in a threaded manner, a vertical groove 54 is disposed between the ascending groove 12 and the auxiliary cavity 20 in a communicating manner, a cross rod 19 is slidably mounted in the vertical groove 54, the cross rod 19 is fixedly connected with the power block 13, a top rod 22 is slidably mounted in the sliding groove 21, the cross rod 19 is fixedly connected with the top rod 22, a top plate 52 is fixedly mounted on the left side surface of the connecting block 58 on the left side, a top groove 51 is disposed in the top plate 52, a ball 50 is hingedly mounted on the top surface of, after the motor 14 rotates, the motor 14 drives the power block 13 to move upwards through the dowel bar 55, the power block 13 drives the ejector rod 22 to move upwards through the cross bar 19, the ejector rod 22 moves upwards to push the top plate 52 upwards through the rolling ball 50, and the top plate 52 rotates around the left limiting rod 60 to drag the upper half of the patient, so that the function of helping the patient to sit up is realized.

In addition, in one embodiment, the pushing mechanism 104 further includes an engaging groove 26 communicating between the sliding groove 21 and the right side surface of the bed body 11, a transmission shaft 23 is rotatably installed on the inner wall of the rear side of the engaging groove 26, a third cone pulley 24 is fixedly installed on the front side surface of the transmission shaft 23, the third cone pulley 24 is engaged with the sliding groove 21, a pushing block 29 is slidably installed in the engaging groove 26, the pushing block 29 is provided with a threaded groove 28, a threaded rod 27 is installed in the threaded groove 28, a fourth cone pulley 25 is fixedly installed on the left side surface of the threaded rod 27, the fourth cone pulley 25 is engaged with the third cone pulley 24, a friction layer 31 is fixedly installed on the right side surface of the rotating plate 39, when the rotating mechanism 102 lets the patient sit up, the patient has corresponding downward sliding, at this time, the rotating mechanism 102 drives the top rod 22 to slide upward, the top rod 22 drives the third cone pulley 24 to rotate, the third cone pulley 24 rotates to drive the threaded rod 27 to rotate, the threaded rod 27 rotates to drive the pushing block 29 to slide rightwards to push the rotating plate 39 to rotate, and the friction layer 31 plays a role

The anti-slip function is used for dragging the lower limbs of the patient to give the patient a comfortable sitting and standing angle.

In addition, in one embodiment, the rear column 15 is symmetrically and fixedly installed in front and back of the left side of the bottom surface of the bed body 11, the reversing rod 16 is rotatably installed in the bottom surface of the rear column 15, the bottom surface of the reversing rod 16 is rotatably installed in the rear leg 17, the front leg 30 is symmetrically and fixedly installed in front and back of the right side of the bottom surface of the bed body 11, four same accommodating cavities 65 are respectively arranged in the front and back rear leg 17 and the front and back front leg 30, a rotating shaft 66 is rotatably installed between the front and back inner walls of the accommodating cavity 65, a rolling wheel 18 is fixedly installed on the rotating shaft 66, when a patient needs to perform an operation or transfer a bed, the medical personnel can directly push the rear side surface of the bed body 11, the rolling wheel 18 rotates to move the whole device to the right, and after the left side surface or the right side surface.

In addition, in one embodiment, the stretching mechanism 103 includes a holding groove 38 with a left opening in the rotating plate 39, a supporting rod 77 is hinged between the front and rear inner walls of the holding groove 38, a supporting cavity 32 is provided in the supporting rod 77, a stretching rod 36 is slidably mounted in the supporting cavity 32, a spring cavity 33 is symmetrically provided in the stretching rod 36, a spring block 35 is slidably mounted in the spring cavity 33, a spring 34 is fixedly mounted between the spring block 35 and the spring cavity 33, positioning grooves 37 are symmetrically provided in the supporting cavity 32, when a person needs to horizontally support the rotating plate 39, the rotating plate 39 is manually rotated to the horizontal, the supporting rod 77 is rotated to the vertical counterclockwise, the stretching rod 36 is pulled downwards to clamp the spring block 35 into the positioning grooves 37, the rotating plate 39 is supported by the stretching rod 36 and the supporting rod 77 together, when the horizontal support is not needed, the stretching rod 36 is rotated to enable the spring block 35 to be received in the spring cavity 33, allowing the spreader bar 36 to retract into the support cavity 32.

When the turning mechanism 102 is operated to turn over a patient, the clamping block 63 is pushed downwards to clamp the clamping groove 62 on the hand-operated wheel 61, so that the rotation of the turning mechanism 102 is prevented from being reversed and reset due to pressure generated on the main board 49 when the patient turns over, after the motor 14 rotates, the motor 14 drives the power block 13 to move upwards through the transmission rod 55, the power block 13 drives the ejector rod 22 to move upwards through the cross rod 19, the ejector rod 22 moves upwards to push the top plate 52 upwards through the rolling ball 50, the top plate 52 rotates around the left limiting rod 60 to drag the upper half of the patient, so as to realize the function of helping the patient to sit up, when the rotating mechanism 102 allows the patient to sit up, the body of the patient slides downwards correspondingly, at the moment, the rotating mechanism 102 drives the ejector rod 22 to slide upwards, the ejector rod 22 slides to drive the third cone pulley 24 to rotate, the third cone pulley 24 rotates to drive the threaded rod 27 to rotate, the threaded rod 27 rotates to drive the pushing block 29 to slide rightwards to push the rotating plate 39 to rotate, the friction layer 31 plays a role of skid resistance, the lower limbs of the patient are dragged to provide a comfortable sitting angle for the patient, when the patient needs to perform an operation or transfer a bed position, the rolling wheel 18 rotates to make the device move rightwards integrally, after the left side face or the right side face of the bed body 11 is pushed, the rear column 15 and the rear foot 17 rotate to enable the device to turn when moving integrally, when people need to horizontally support the rotating plate 39, the rotating plate 39 is rotated to be horizontal manually, the supporting rod 77 rotates anticlockwise to be vertical, the stretching rod 36 is pulled downwards to enable the spring block 35 to be clamped into the positioning groove 37, the stretching rod 36 and the supporting rod 77 support the rotating plate 39 together, the stretching rod 36 is rotated to enable the spring block 35 to be collected into the spring cavity 33 when the horizontal support does not need to be used, and therefore the stretching rod 36 can be collected into the supporting cavity 32.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A medical turn-over device for automatically assisting a patient to turn over comprises a bed body and is characterized in that: the turning bed is characterized in that a turning cavity with an upward opening is arranged in the bed body, an auxiliary cavity is communicated with the bottom wall of the turning cavity, arc blocks are symmetrically and fixedly installed on the front and back of the bottom surface of the turning cavity, side plates are slidably installed on the arc blocks, a main plate is hinged and installed between the side plates on the left side and the right side, a rotating mechanism capable of assisting a patient to turn over is arranged between the auxiliary cavity and the back side surface of the bed body, the rotating mechanism comprises a control block fixedly installed on the bottom surface of the main plate, a first gear is fixedly installed on the right side surface of the control block, a rotating rod is rotatably installed on the inner wall of the right side of the auxiliary cavity, a second gear is fixedly installed on the rotating rod and meshed with the first gear, when the rotating rod rotates, the rotating rod drives the first gear to rotate through the second gear, and the first gear drives the, the function of assisting the patient to turn over is realized; the left side and the right side of the main board are symmetrically provided with connecting blocks, the right side of each connecting block is fixedly provided with a rotating plate, an extension mechanism capable of horizontally supporting the rotating plate is arranged in the rotating plate, a sliding groove is communicated between the bottom wall of the auxiliary cavity and the bottom surface of the bed body, the right side of the sliding groove is provided with a pushing mechanism capable of jacking the rotating plate for placing the lower limbs of a sitting patient, and the inner wall of the left side of the auxiliary cavity is provided with a supporting mechanism capable of helping the patient to sit up; the left side surface and the right side surface of the main board are symmetrically provided with rotating grooves, the inner wall of the front side of each rotating groove is fixedly provided with a limiting rod, a limiting groove is arranged in each connecting block, and the limiting rods and the limiting grooves are installed in a sliding mode; the rotating mechanism consists of a power rod, a hand-operated wheel, a first cone pulley and a second cone pulley; the power rod is rotatably arranged between the inner wall of the front side of the auxiliary cavity and the front side surface of the bed body, the hand-operated wheel is fixedly arranged on the front side surface of the power rod, the first cone pulley is fixedly arranged on the rear side of the power rod, the second cone pulley is fixedly arranged on the left side surface of the rotating rod, and the first cone pulley is meshed with the second cone pulley; a pressing groove is formed in the rear side face of the bed body and above the power rod, a clamping block is installed in the pressing groove in a sliding mode, and a clamping groove is formed in the bottom face of the clamping block; the supporting mechanism consists of a lifting groove, a motor, a dowel bar, a power block, a vertical groove, a cross bar, a top plate, a top groove and a rolling ball; the lifting groove is formed in the inner wall of the left side of the auxiliary cavity, the motor is arranged in the bottom wall of the lifting groove, the transmission rod is fixedly installed on the top surface of an upward output shaft of the motor, the transmission rod extends upwards to penetrate into the top wall of the lifting groove, the power block is installed on the transmission rod in a threaded mode, the vertical groove is communicated between the lifting groove and the auxiliary cavity, the transverse rod is installed in the vertical groove in a sliding mode, the transverse rod is fixedly connected with the power block, the ejector rod is installed in the sliding groove in a sliding mode, the transverse rod is fixedly connected with the ejector rod, the top plate is fixedly installed on the left side face of the connecting block on the left side of the sliding groove, the top groove is arranged in the top plate in a hinged mode, the rolling ball is installed in the top groove in a sliding mode, and the pushing mechanism is composed of an engagement groove, the threaded groove, the threaded rod, the fourth cone pulley and the friction layer; the meshing groove is communicated with the right side surface of the bed body, the transmission shaft is rotatably mounted on the inner wall of the rear side of the meshing groove, the third cone pulley is fixedly mounted on the front side surface of the transmission shaft and meshed with the sliding groove, the pushing block is slidably mounted in the meshing groove and provided with the threaded groove, the threaded rod is mounted in the threaded groove through threads, the fourth cone pulley is fixedly mounted on the left side surface of the threaded rod and meshed with the fourth cone pulley, and the friction layer is fixedly mounted on the right side surface of the rotating plate; a rear column is symmetrically and fixedly arranged in the front and back direction on the left side of the bottom surface of the bed body, a reversing rod is rotatably arranged in the bottom surface of the rear column, the bottom surface of the reversing rod is rotatably arranged in a rear foot, front feet are symmetrically and fixedly arranged in the front and back direction on the right side of the bottom surface of the bed body, the same four accommodating cavities are respectively arranged in the front and back rear feet and the front and back feet, a rotating shaft is rotatably arranged between the front and back inner walls of the accommodating cavities, and rolling wheels are fixedly arranged; the stretching mechanism consists of an accommodating groove, a supporting rod, a supporting cavity, a stretching rod, a spring cavity, a spring block, a spring and a positioning groove; be equipped with the opening left in the rotor plate the holding tank, articulated installation between the inner wall around the holding tank the bracing piece, be equipped with in the bracing piece support the chamber, support intracavity slidable mounting stretch the pole, stretch in the pole bilateral symmetry be equipped with the spring chamber, spring intracavity slidable mounting the spring block, the spring block with fixed mounting between the spring chamber the spring, it is equipped with to support chamber bilateral symmetry the constant head tank.