A kind of lifting hospital bed
Technical field
This utility model relates to a kind of medical bedstead, relates in particular to a kind of lifting hospital bed.
Background technology
When medical bedstead is mainly done treatment, rescue, transhipment for the patient in hospital's intensive care unit(ICU) (ICU) and public ward.Because treatment needs, medical bedstead needs to raise within the specific limits or to descend.Existing lifting hospital bed main use bent axle swings and rises or, by the up-down mode of four jiaos of guide pillars and worm and gear combination, adopt hand or motor driving worm and gear, makes a body along the guide pillar vertical lift.
Bent axle swings to rise and namely by the driven by motor bent axle, swings, and bent axle drives connected upper bed body level and rises, and adopts medical bedstead upper bed body when upper bed body rises and descend of this rising mode all can move forward and backward, and easily causes accident.
Adopt the medical bedstead of guide pillar lifting very high to the environment for use requirement, in a single day guide pillar or worm and gear enter foreign material, are easy to cause a body lifting fault; If the run-off the straight of bed body, also can cause because guide pillar is stuck normally lifting of a body.
Summary of the invention
Technical problem to be solved in the utility model is, provides a kind of lifting hospital bed, but bed body vertical lift and simple in structure is easy to maintenance, working stability.
in order to solve the problems of the technologies described above, it is a kind of lifting hospital bed that this utility model provides, comprise bed frame, lower bedstead and be located at described bed frame and lower bedstead between lowering or hoisting gear, described lowering or hoisting gear comprises bracing frame, trident rocking arm and electric pushrod, support frame as described above comprises the head of a bed that is fixed at described lower bedstead or the tailstock wherein fixing support rack of an end and the assistant support of the other end, the top of described fixing support rack and described assistant support is hinged with described trident rocking arm separately, all the other two ends of described trident rocking arm are hinged with shell end and the described bed frame of described electric pushrod respectively, the bottom central part of described bed frame is divided and is fixed with hinged seat, the push rod of described electric pushrod and described hinged seat are hinged.
Improvement as such scheme, described trident rocking arm comprise two respectively with two groups of described fixing support racks or two groups of lower links that described assistant support is connected, a middle link hinged with described bed frame, and a upper link hinged with described electric pushrod shell end.
As the improvement of such scheme, described lower bedstead comprises underframe and is located at the pulley of four jiaos, described underframe.
As the improvement of such scheme, before and after described underframe one end, be provided with symmetrically two groups of fixing support racks, before and after the other end, be provided with symmetrically two groups of assistant supports.
As the improvement of such scheme, described trident rocking arm can overturn take the hinged place with described fixing support rack or described assistant support as rotating shaft up or down under the push-and-pull action of described electric pushrod.
As the improvement of such scheme, described electric pushrod is provided with encoder.
Implement this utility model, have following beneficial effect:
This utility model uses the mode of electric pushrod driving trident rocking arm by the lifting of bed body and decline, can stably control medical bedstead and rise and descend, compact conformation; And the driving element such as electric pushrod all has sealing, has stronger capacity of resisting disturbance, can adapt to severe working environment.
This utility model electric pushrod is provided with encoder, can accurately control according to the electric machine frequency in electric pushrod the stroke of electric pushrod, thereby guarantees medical bedstead steadily level rising or decline.
This utility model is left the bed and has been set up pulley, can to patient, carry out easily the transfer of each section office.
The accompanying drawing explanation
Fig. 1 is that this utility model is for a kind of lifting hospital bed original state Facad structure schematic diagram;
Fig. 2 is that this utility model is for a kind of lifting hospital bed original state side structure schematic diagram;
Fig. 3 is that this utility model is for a kind of lifting hospital bed lifting state Facad structure schematic diagram;
Fig. 4 is that this utility model is for a kind of lifting hospital bed lifting state side structure schematic diagram.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, this utility model is described in further detail.
as shown in Figures 1 to 4, a kind of lifting hospital bed, comprise bed frame 1, lower bedstead 2 and be located at described bed frame 1 and lower bedstead 2 between lowering or hoisting gear 3, described lowering or hoisting gear 3 comprises bracing frame 4, trident Rocker arm 5 and electric pushrod 6, support frame as described above 4 comprises the head of a bed that is fixed at described lower bedstead 2 or the tailstock wherein fixing support rack 41 of an end and the assistant support 42 of the other end, the top of described fixing support rack 41 and described assistant support 42 is hinged with described trident Rocker arm 5 separately, all the other two ends of described trident Rocker arm 5 are hinged with shell end and the described bed frame 1 of described electric pushrod 6 respectively, the bottom central part of described bed frame 1 is divided and is fixed with hinged seat 7, the push rod 8 of described electric pushrod 6 is hinged with described hinged seat 7.
It should be noted that, operation principle of the present utility model is, when described lifting hospital bed need to the rising, described electric pushrod 6 is started working, and described push rod 8 is protruding, under the combined effect of two secondary electric pushrods 6, described trident Rocker arm 5 is upset upwards, drives described bed frame 1 vertical lifting; When described lifting hospital bed need to decline, described electric pushrod 6 is started working, and described push rod inwardly shrinks, and under the combined effect of two secondary electric pushrods 6, described trident Rocker arm 5 overturns downwards, drives described bed frame 1 and vertically descends.
This utility model uses the mode of electric pushrod 6 driving trident Rocker arm 5s by described bed frame 1 lifting and decline, can stably control medical bedstead and rise and descend, compact conformation; And the driving element such as electric pushrod 6 all has sealing, has stronger capacity of resisting disturbance, can adapt to severe working environment.
As shown in Figure 4, described trident Rocker arm 5 comprise two respectively with two groups of described fixing support racks 41 or two groups of lower links 51 that described assistant support 42 is connected, a middle link 52 hinged with described bed frame 1, and a upper link 53 hinged with described electric pushrod 6 shell ends.
Preferably, described lower bedstead 2 comprises underframe and is located at the pulley 9 of four jiaos, described underframe, can to patient, carry out easily the transfer of each section office.
Preferably, before and after described underframe one end, be provided with symmetrically two groups of fixing support racks 41, before and after the other end, be provided with symmetrically two groups of assistant supports 42.
It should be noted that, described two groups of fixing support racks 41 and two groups of assistant supports 42 provide 4 jiaos of stable support for described bed frame 1, for steady rising and the decline of described bed frame 1 provides support.
Preferably, described trident Rocker arm 5 can overturn take the hinged place with described fixing support rack or described assistant support 42 as rotating shaft up or down under the push-and-pull action of described electric pushrod 6.
Preferably, described electric pushrod 6 is provided with encoder (not shown in FIG.), electric machine rotation one circle on described electric pushrod 6, and encoder will produce a pulse and it recorded and feed back.Described encoder can accurately be controlled the stroke of electric pushrod 6 according to the electric machine frequency in electric pushrod 6, make the electric pushrod 6 at described medical bedstead two ends keep synchronous, thereby guarantees medical bedstead steadily level rising or decline.
Above disclosed is only a kind of preferred embodiment of this utility model, certainly can not limit with this interest field of this utility model, and the equivalent variations of therefore doing according to this utility model claim, still belong to the scope that this utility model is contained.