CN210185876U

CN210185876U - Liftable wheelchair bed

Info

Publication number: CN210185876U
Application number: CN201920496191.3U
Authority: CN
Inventors: Xiaofang Xia; 夏小芳
Original assignee: Ruian Peoples Hospital
Current assignee: Ruian Peoples Hospital
Priority date: 2019-04-12
Filing date: 2019-04-12
Publication date: 2020-03-27
Anticipated expiration: 2029-04-12

Abstract

The utility model relates to a liftable wheelchair bed, which comprises an upper chair frame, a lower chair frame, universal wheels of leg support rods and driving wheels, wherein the bottom of the liftable wheelchair bed adopts a left-right cross lifting frame, the lower front end of the left cross lifting frame is hinged with the left side of the lower chair frame, the lower rear end of the left cross lifting frame is hinged with a left lower sleeve, the lower front end of the right cross lifting frame is hinged with the right side of the lower chair frame, the lower rear end of the right cross lifting frame is hinged with a right lower sleeve, a rear upper transverse plate is connected with the upper chair frame through an upper sleeve in a sliding way, the left lower sleeve is connected with the lower sleeve in a sliding way, a screw is in threaded connection with a rear upper transverse rod, the rear end of the screw is provided with a rocking handle, the chair back comprises a front chair back and a rear chair back, the chair back is respectively connected with the upper chair frame in a rotating way, fastening devices are respectively arranged, when the state conversion is carried out, the back, avoiding pressure sores caused by long-time compression and being beneficial to the health of users.

Description

Liftable wheelchair bed

Technical Field

The utility model relates to a lifting wheelchair bed.

Background

The wheelchair is a chair provided with wheels, and is an important moving tool for the rehabilitation, turnover transportation, treatment and outgoing activities of wounded, patients and disabled people at home, for the crowd who needs to move by means of the wheelchair, the wheelchair is very inconvenient to move between beds and the wheelchair and is easy to hurt the people, and when the patient has an emergency, the person bends to be positioned on the wheelchair and moves to cause secondary injury to the person.

The existing wheelchair bed is characterized in that a chair back rotates downwards and is parallel to a cushion to form a bed state, firstly, when a patient is positioned on a wheelchair and the state is converted, the back of the patient loses the chair back capable of bearing force, and the patient needs to be supported by external force, so that the wheelchair bed is inconvenient; secondly, the swivel is too low in bed state and inconvenient to move, so that the person can feel oppressive, and anxiety in mind is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, a liftable wheelchair bed is provided, the technical scheme of the utility model is that:

a liftable wheelchair bed comprises a chair frame, wherein the chair frame comprises an upper chair frame and a lower chair frame, a front supporting rod and a rear supporting rod are arranged between the upper chair frame and the lower chair frame, the front supporting rod and the rear supporting rod are telescopic rods, the front supporting rod comprises a left front supporting rod and a right front supporting rod, the top of the left leg supporting rod is hinged above the left front supporting rod, a left pedal is arranged at the bottom of the left leg supporting rod, a left foot supporting plate is arranged at the bottom of the left pedal, the top of the right leg supporting rod is hinged above the right front supporting rod, a right foot pedal is arranged at the bottom of the right leg supporting rod, a right foot supporting plate is arranged at the bottom of the right foot pedal, the left front supporting rod is hinged with one end of a left telescopic rod, the other end of the left telescopic rod is hinged with the left leg supporting rod for fixing the left leg supporting rod, the right front supporting rod is hinged with one end of a, the universal wheels are arranged at the bottoms of the left front supporting rod and the right front supporting rod, the rear supporting rod comprises a left rear supporting rod and a right rear supporting rod, driving wheels are arranged on the left rear supporting rod and the right rear supporting rod, a front upper transverse plate and a rear upper transverse plate are arranged below the upper chair frame, the front upper transverse plate and the left side of the rear upper transverse plate are connected with the upper two ends of the left cross lifting frame, the front upper transverse plate and the right side of the rear upper transverse plate are connected with the upper two ends of the right cross lifting frame, the lower chair frame corresponding to the hinge points of the left side and the right side of the rear upper transverse plate is slidably connected with a left lower sleeve and a right lower sleeve, the lower front end of the left cross lifting frame is hinged with the left side of the lower chair frame, the lower rear end of the left cross lifting frame is hinged with the left lower sleeve, and the lower front end of the right cross lifting frame is hinged with the right side of the lower, the lower rear end of the right cross lifting frame is hinged with the right lower sleeve, a connecting rod is arranged between the hinge point of the left cross lifting frame and the hinge point of the right cross lifting frame, the left cross lifting frame and the right cross lifting frame can move synchronously, the rear upper transverse plate is connected with the upper chair frame in a sliding way through an upper sleeve, the left lower sleeve is connected with the right lower sleeve in a sliding way with the lower chair frame, the front upper transverse plate rotates to be connected with the front end of a screw rod, the screw rod is connected with the rear upper transverse rod in a threaded way, the rear end of the screw rod is provided with a rocking handle, the rocking handle is rocked, the screw rod drives the rear upper transverse plate to move so as to drive the rear point end of the left cross lifting frame and the right cross lifting frame to move back and forth, the lifting destination of the wheelchair is realized, the handrail is arranged above the upper chair frame, the back is arranged behind the upper chair frame, the upper end of the front chair back can turn over around taking the lower end of the front chair back as a center, the outer side of the front chair back is provided with a rear chair back, the rear chair back is hinged with the upper chair frame, the bottom of the rear chair back is provided with a locking device, the upper end of the rear chair back can turn over around taking the lower end of the rear chair back as a center, the front chair back is connected with the rear chair back in a clamping manner, the side surfaces of the front chair back and the rear chair back are positioned on the same plane, the upper ends of the left side surface and the right side surface of the rear chair back are provided with a fixed shaft, the outer side of the fixed shaft is rotatably connected with a rotating sleeve above a rotating rod, the rotating rod comprises an upper rod and a lower sleeve, the upper rod is connected with the lower sleeve in a threaded manner to realize stable extension, the locking device is arranged on the fixed shaft, the back of the chair back rear side articulates the backup pad, when using the extension board, rotates the extension version to parallel position, rotates the backup pad, and the backup pad top is located extension board bottom, plays the supporting role to the extension board.

As the preferred technical scheme, the one end of the area is supported in the fixed connection on the right leg bracing piece, and the area is supported the shank and is played the supporting role, the other end fixed connection connecting rod of supporting the area, the both ends of connecting rod are equipped with the bandage, fixed connection pole, left leg bracing piece bottom is equipped with the recess, the recess with the connecting rod matches to fit, and the connecting rod is located the recess, be equipped with annular groove and lower annular groove on the left leg bracing piece, go up the annular groove with distance between the lower annular groove is less than the length of connecting rod, go up the annular groove with be equipped with the clamp down in the annular groove, the clamp is used for fastening the connecting rod.

As preferred technical scheme, the locking device that preceding back of the chair bottom was equipped with includes the preceding dead lever, preceding dead lever fixed connection one side of the preceding back of the chair, the chair frame is connected in the rotation of preceding dead lever, preceding check lock lever is connected to the preceding dead lever internal rotation, be equipped with preceding screw hole in the preceding back of the chair, preceding screw hole threaded connection the inner of preceding check lock lever, the outside of preceding check lock lever is equipped with preceding knob, rotates the knob, and the screw hole before the inner section of preceding check lock lever shifts out, and the preceding back of the chair can rotate, and the screw hole before the inner section precession of preceding check lock lever, preceding back of the chair locking.

As preferred technical scheme, the locking device that back of the chair bottom was equipped with includes the back dead lever, back dead lever fixed connection one side of the back of the chair, the back dead lever rotates and connects the upper chair frame, back dead lever internal rotation connects back check lock lever, be equipped with back screw hole in the back of the chair, back screw hole threaded connection the inner of back check lock lever, the outside of back check lock lever is equipped with back knob, rotates the knob, and the back screw hole is shifted out to the inner section of back check lock lever, and the back of the chair can rotate, and the inner section of back check lock lever is screwed into back screw hole, and the back of the chair is locked.

According to the preferable technical scheme, the locking device arranged on the fixed shaft comprises an outer convex strip arranged at the inner end of the fixed shaft, an inner groove matched with the outer convex strip is formed in the inner side of the rotating sleeve, the inner groove of the sleeve is clamped with the outer groove of the fixed shaft, and the moving rod is locked.

As preferred technical scheme, the contained angle between the adjacent outer sand grip is 90 degrees, and the dwang can carry out 90 degrees rotations.

According to the preferable technical scheme, the number of the support plates is two, the bottom of each support plate is provided with a fixing threaded hole, and the lengthening plate is in threaded connection with a support nut. Support nut threaded connection when using the extension board, will add the extension board and rotate to parallel position, rotate the backup pad, two backup pads tops are located the extension board bottom, and the fixed thread hole of two backup pads is aligned, and the position locking is carried out to extension board and backup pad to the rotating support nut, plays the supporting role to the extension board.

As the optimized technical scheme, the bottom of the rotating rod is hinged with the fixed base, so that the base is large in bottom area and good in stability.

As preferred technical scheme, left side telescopic link includes upper left pole and lower left pole, upper left pole with the lower left pole is through left muffjoint, the tight pole in a left side sleeve one side threaded connection left side, the tight pole inboard in a left side is equipped with left top arc board, and left top arc board is fixed upper left pole and lower left pole, right side telescopic link includes upper right pole and lower right pole, upper right pole with the lower right pole is through right muffjoint, the tight pole in the right side sleeve one side threaded connection right side, the tight pole inboard in the right side is equipped with right top arc board, and right top arc board is fixed upper right pole and lower right pole.

By adopting the technical scheme, when in use, the rocker is rotated to adjust the height of the wheelchair, the rear knob is rotated to enable the rear chair back to be positioned in a rotatable state, the rear chair back is rotated to a horizontal position, then the rear knob is tightly twisted to enable the rear chair back to be fixed, the rotary sleeve is moved outwards, the rotary rod is rotated to a vertical position, the base is rotated to a vertical position, the lower sleeve is rotated to enable the rotary rod to be positioned at a proper height to play a supporting role, the left tightening rod and the right tightening rod are outwards screwed out to enable the left telescopic rod and the right telescopic rod to be positioned in a telescopic state, the front knob is rotated to enable the front chair back to be positioned in a rotatable state, the front chair back is rotated to a horizontal position and is clamped with the rear chair back, the front knob is tightly twisted, the connecting rod binding band is loosened, the hoop is removed, the connecting rod is arranged in, the fastening, fixed link pole will control leg support pole and turn to the assigned position, and the tight pole of the left side of screwing and the tight pole of the right side will control the telescopic link fixed. The utility model discloses when carrying out state conversion, the back of the chair has guaranteed around adopting that personnel's back has supported, has realized the regulation of wheelchair height, utilizes the adjustable of supporting the area when also guaranteeing that the shank supports, has avoided the pressure sore that leads to of long-time oppression, has the health of useful user.

Drawings

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

Fig. 1 is a left side view of an embodiment of the present invention;

FIG. 2 is a left side view of an embodiment of the present invention without a drive wheel;

FIG. 3 is a schematic structural view of a left leg support bar and a right leg support bar according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a left leg support rod according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a rear seat back according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of a fixed shaft and a rotating sleeve according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a front seat back according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a cross section of an upper left rod and a left sleeve of the embodiment of the invention;

in the figure: 1-mounting a chair frame; 2-lower chair frame; 3-a left front support bar; 4-left leg strut bar; 5-left foot pedal; 6-left foot support plate; 7-right leg support bar; 8-right foot pedal; 9-right foot support plate; 10-a left telescopic rod; 11-universal wheels; 12-left rear support bar; 13-a drive wheel; 14-front upper transverse plate; 15-rear upper transverse plate; 16-a left cross crane; 17-a left lower sleeve; 18-a connecting rod; 19-an upper sleeve; 20-a screw; 21-a rocking handle; 22-a handrail; 23-front chair back; 24-back of chair; 25-a fixed shaft; 26-rotating rods; 27-rotating the sleeve; 28-upper rod; 29-lower sleeve; 30-a push rod; 31-a lengthened plate; 32-a support plate; 33-a support band; 34-a connecting rod; 35-a strap; 36-a groove; 37-an upper annular groove; 38-lower annular groove; 39-a clamp; 40-front fixing rod; 41-front locking lever; 42-front threaded hole; 43-front knob; 44-external convex strips; 45-inner grooves; 46-fixing threaded holes; 47-a support nut; 48-a fixed base; 49-fixing a buckle; 50-upper left rod; 51-left lower bar; 52-left top arc plate; 53-left sleeve; 54-left tightening rod.

Detailed Description

For further explanation of the invention, reference is made to the following description taken in conjunction with the accompanying drawings:

example (b): as shown in figures 1 to 8 of the drawings,

a liftable wheelchair bed comprises a chair frame, the chair frame comprises an upper chair frame 1 and a lower chair frame 2, a front supporting rod and a rear supporting rod are arranged between the upper chair frame 1 and the lower chair frame 2, the front supporting rod and the rear supporting rod are telescopic rods, the front supporting rod comprises a left front supporting rod 3 and a right front supporting rod, the top of the left leg supporting rod 4 is hinged above the left front supporting rod 3, a left pedal plate 5 is arranged at the bottom of the left leg supporting rod 4, a left foot supporting plate 6 is arranged at the bottom of the left pedal plate 5, the top of the right leg supporting rod 7 is hinged above the right front supporting rod, a right foot plate 8 is arranged at the bottom of the right leg supporting rod 8, a right foot supporting plate 9 is arranged at the bottom of the right foot plate 8, the left front supporting rod 3 is hinged with one end of a left telescopic rod 10, the other end of the left telescopic rod 10 is hinged with the left leg supporting rod 4 for fixing the left leg, for fixing the right leg supporting rod, universal wheels 11 are arranged at the bottom of the left front supporting rod 3 and the right front supporting rod, the rear supporting rod comprises a left rear supporting rod 12 and a right rear supporting rod, driving wheels 13 are arranged on the left rear supporting rod and the right rear supporting rod, a front upper transverse plate 14 and a rear upper transverse plate 15 are arranged below the upper chair frame, the front upper transverse plate 14 and the left side of the rear upper transverse plate 15 are connected with the upper two ends of a left cross lifting frame 16, the front upper transverse plate and the right side of the rear upper transverse plate are connected with the upper two ends of a right cross lifting frame, a left lower sleeve 17 and a right lower sleeve are slidably connected on the lower chair frame corresponding to the left and right side hinge points of the rear upper transverse plate, the lower front end of the left cross lifting frame 16 is hinged with the left side of the lower chair frame, the lower rear end of the left cross lifting frame is hinged with the left lower sleeve 17, the lower front end of the right cross lifting frame is hinged with the right side of the lower chair frame, the lower rear end of the right cross, the left and right cross lifting frames can move synchronously, the rear upper transverse plate is connected with the upper chair frame 1 in a sliding way through an upper sleeve 19, the left lower sleeve 17 is connected with the right lower sleeve in a sliding way with the lower chair frame 2, the front upper transverse plate 14 is rotationally connected with the front end of a screw rod 20, the screw rod 20 is in threaded connection with a rear upper transverse rod 15, the rear end of the screw rod 20 is provided with a rocking handle 21 which is rocked to drive the rear upper transverse plate to move so as to drive the rear point end of the left and right cross lifting frames to move back and forth, thereby realizing the lifting of the wheelchair, a handrail 22 is arranged above the upper chair frame 1, a chair back is arranged behind the upper chair frame 1 and comprises a front chair back 23, the bottom of the front chair back 23 is hinged with the upper chair frame 1, the bottom of the front chair back 23 is provided with a locking device, the upper end of the front chair back 23 can turn over back and forth by taking the lower end, the upper end of the back chair back 24 can turn back and forth by taking the lower end of the back chair back as a center, the front chair back 23 is clamped with the back chair back 24, the side surfaces of the front chair back 23 and the back chair back 24 are positioned on the same plane, the upper ends of the left side surface and the right side surface of the back chair back 24 are provided with fixing shafts 25, the outer sides of the fixing shafts 25 are rotatably connected with rotating sleeves 27 above the rotating rods 26, the rotating rods 26 comprise upper rods 28 and lower sleeves 29, the upper rods 28 are in threaded connection with the lower sleeves 29 to realize stable extension and retraction, the fixing shafts 25 are provided with locking devices, the upper part of the back chair back is provided with push rods 30, the upper part of the back side of the back chair back 24 is hinged with an elongated plate 31, the bottom of the elongated, the lengthened plate is rotated to a parallel position, the supporting plate is rotated, and the top end of the supporting plate is positioned at the bottom of the lengthened plate to support the lengthened plate.

One end of the support belt 33 is fixedly connected to the right leg support rod 7, the support belt 33 supports the legs, the other end of the support belt 33 is fixedly connected to the connecting rod 34, the two ends of the connecting rod 34 are provided with binding bands 35, the fixed connecting rod is arranged at the bottom of the left leg support rod 6 and is provided with a groove 36, the groove 36 is matched with the connecting rod 34, the connecting rod is positioned in the groove, the left leg support rod 6 is provided with an upper annular groove 37 and a lower annular groove 38, the distance between the upper annular groove 37 and the lower annular groove 38 is smaller than the length of the connecting rod 34, a clamping band 39 is arranged in the upper annular groove 37 and the lower annular.

Locking device that preceding back of the chair 23 bottom was equipped with includes preceding dead lever 40, one side of the preceding back of the chair 23 of preceding dead lever 40 fixed connection, preceding dead lever 40 rotates and connects chair frame 1, preceding check lock lever 41 is connected in the rotation of preceding dead lever 40, be equipped with preceding screw hole 42 in the preceding back of the chair 23, the inner of preceding check lock lever 41 is connected to preceding screw hole screw thread 42, the outside of preceding check lock lever 41 is equipped with preceding knob 43, the rotation knob, screw hole before the inner section of preceding check lock lever shifts out, the preceding back of the chair can rotate, screw hole before the inner section precession of preceding check lock lever, preceding back of the chair.

The locking device that back of the chair 24 bottom was equipped with includes the back dead lever, one side of back of the chair of back dead lever fixed connection back, back dead lever rotates and connects the upper chair frame, back dead lever internal rotation connects back check lock lever, be equipped with the back screw hole in the back of the chair, the inner of back screw hole threaded connection back check lock lever, the outside of back check lock lever is equipped with the back knob, rotate the knob, the back screw hole is shifted out to the inner section of back check lock lever, the back of the chair can rotate, the inner section of back check lock lever is screwed into back screw hole, the locking of.

The locking device arranged on the fixed shaft 25 comprises an outer convex strip 44 arranged at the inner end of the fixed shaft, an inner groove 45 matched with the outer convex strip 44 is arranged on the inner side of the rotating sleeve 27, the inner groove of the sleeve is tightly clamped with the outer groove of the fixed shaft, and the movable rod is locked.

The contained angle between the adjacent outer convex strip is 90 degrees, and the dwang can carry out 90 degrees rotations.

The number of the support plates 32 is two, fixing threaded holes 46 are formed in the bottoms of the support plates, and support nuts 47 are connected to the elongated plate 31 in a threaded mode. Support nut threaded connection fixed screw hole, when using the extension board, will add the extension board and rotate to parallel position, rotate the backup pad, two backup pads tops are located the extension board bottom, and the fixed screw hole of two backup pads aligns, and the position locking is carried out to extension board and backup pad to the rotating support nut, plays the supporting role to the extension board.

The bottom of the rotating rod 26 is hinged with a fixed base 48, the base has large bottom area and good stability.

Left telescopic link 10 includes upper left pole 50 and left lower beam 51, upper left pole 50 and left lower beam 51 are connected through left sleeve 53, tight pole 54 in the tight pole 54 inboard in left side threaded connection, the tight pole 54 inboard in a left side is equipped with left top arc board 52, left top arc board is fixed upper left pole and left lower beam, right telescopic link includes upper right pole and right lower beam, upper right pole and right lower beam pass through right sleeve connection, tight pole in the right side threaded connection of right sleeve one side, the tight pole inboard in the right side is equipped with right top arc board, right top arc board is fixed upper right pole and right lower beam.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a liftable wheelchair bed, includes the chair frame, its characterized in that: the chair frame comprises an upper chair frame and a lower chair frame, a front supporting rod and a rear supporting rod are arranged between the upper chair frame and the lower chair frame, the front supporting rod and the rear supporting rod are telescopic rods, the front supporting rod comprises a left front supporting rod and a right front supporting rod, the top of the left leg supporting rod is hinged above the left front supporting rod, a left pedal is arranged at the bottom of the left leg supporting rod, a left foot supporting plate is arranged at the bottom of the left pedal, the top of the right leg supporting rod is hinged above the right front supporting rod, a right pedal is arranged at the bottom of the right leg supporting rod, a right foot supporting plate is arranged at the bottom of the right pedal, the left front supporting rod is hinged with one end of the left telescopic rod, the other end of the left telescopic rod is hinged with the left leg supporting rod, the right front supporting rod is hinged with one end of the right telescopic rod, the other end of the right telescopic rod is hinged with the right, the rear support rod comprises a left rear support rod and a right rear support rod, the left rear support rod and the right rear support rod are both provided with a driving wheel, a front upper transverse plate and a rear upper transverse plate are arranged below the upper chair frame, the front upper transverse plate and the left side of the rear upper transverse plate are connected with the upper two ends of a left cross lifting frame, the front upper transverse plate and the right side of the rear upper transverse plate are connected with the upper two ends of a right cross lifting frame, the lower chair frame corresponding to the hinge points of the left side and the right side of the rear upper transverse plate is slidably connected with a left lower sleeve and a right lower sleeve, the lower front end of the left cross lifting frame is hinged with the left side of the lower chair frame, the lower rear end of the left cross lifting frame is hinged with the left lower sleeve, the lower front end of the right cross lifting frame is hinged with the right side of the lower chair frame, the lower rear end of the right cross lifting frame is hinged with the right lower sleeve, a connecting rod is arranged between the hinge point of the, the rear upper transverse plate is connected with the upper chair frame in a sliding manner through an upper sleeve, the left lower sleeve is connected with the right lower sleeve in a sliding manner through a lower chair frame, the front upper transverse plate is connected with the front end of a screw in a rotating manner, the screw is connected with a rear upper transverse rod in a threaded manner, a rocking handle is arranged at the rear end of the screw, a handrail is arranged above the upper chair frame, a chair back is arranged at the rear of the upper chair frame and comprises a front chair back, the bottom of the front chair back is hinged with the upper chair frame, a locking device is arranged at the bottom of the front chair back, the upper end of the front chair back can turn over around by taking the lower end of the front chair back as the center, a rear chair back is arranged at the outer side of the front chair back, the rear chair back is hinged with the upper chair frame, a locking device is arranged at the bottom of the rear chair back, the upper end of the rear chair back can turn over, the utility model discloses a chair back, including back of the chair, back of the chair rear side face upper end is equipped with the fixed axle, the fixed axle outside is rotated the rotation sleeve of connecting the dwang top, the dwang includes upper boom and lower sleeve, the upper boom with threaded connection between the lower sleeve, be equipped with locking device on the fixed axle, back of the chair top is equipped with the push rod, back of the chair rear side top hinge connection lengthened plate, lengthened plate bottom joint the fixed buckle of back of the chair rear side, the articulated backup pad of back of the.

2. A liftable wheelchair bed as claimed in claim 1, wherein: the utility model discloses a leg support, including right leg bracing piece, upper ring groove and lower annular groove, the one end of fixed connection support area on the right leg bracing piece, the other end fixed connection connecting rod of supporting the area, the both ends of connecting rod are equipped with the bandage, left leg bracing piece bottom is equipped with the recess, the recess with the connecting rod matches and suits, be equipped with upper ring groove and lower annular groove on the left leg bracing piece, upper ring groove with distance between the lower annular groove is less than the length of connecting rod, upper ring groove with be equipped with the clamp down in the annular groove.

3. A liftable wheelchair bed as claimed in claim 1, wherein: the locking device that preceding back of the chair bottom was equipped with includes the front fixing pole, front fixing pole fixed connection one side of the preceding back of the chair, the front fixing pole rotates and connects the upper chair frame, preceding check lock pole is connected to the front fixing pole internal rotation, be equipped with preceding screw hole in the preceding back of the chair, preceding screw hole threaded connection the inner of preceding check lock pole, the outside of preceding check lock pole is equipped with preceding knob.

4. A liftable wheelchair bed as claimed in claim 3, wherein: the locking device that back of the chair bottom was equipped with includes the back dead lever, back dead lever fixed connection one side of the back of the chair, the back dead lever rotates and connects the upper chair frame, back dead lever internal rotation connects back check lock lever, be equipped with the back screw hole in the back of the chair, back screw hole threaded connection the inner of back check lock lever, the outside of back check lock lever is equipped with the back knob.

5. A liftable wheelchair bed as claimed in claim 1, wherein: the locking device that is equipped with on the fixed axle includes fixed axle the inner is equipped with outer convex strip, the rotation sleeve inboard be equipped with outer convex strip matches the suitable inner groovy.

6. A liftable wheelchair bed as claimed in claim 5, wherein: the included angle between adjacent outer convex strips is 90 degrees.

7. A liftable wheelchair bed as claimed in claim 1, wherein: the number of the supporting plates is two, the bottom of each supporting plate is provided with a fixing threaded hole, the lengthening plate is in threaded connection with a supporting nut, and the supporting nut is in threaded connection with the fixing threaded holes.

8. A liftable wheelchair bed as claimed in claim 1, wherein: the bottom of the rotating rod is hinged with a fixed base.

9. A liftable wheelchair bed as claimed in claim 1, wherein: the left telescopic link includes upper left pole and lower left pole, upper left pole with the lower left pole is through left muffjoint, the tight pole in a left side sleeve one side threaded connection left side, the tight pole inboard in a left side is equipped with left top arc board, the right telescopic link includes upper right pole and right lower pole, upper right pole with the lower right pole is through right muffjoint, the tight pole in the right side sleeve one side threaded connection right side, the tight pole inboard in the right side is equipped with right top arc board.