CN103505330B - Pressure-feedback-type is automatic turnover bed - Google Patents
Pressure-feedback-type is automatic turnover bed Download PDFInfo
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- CN103505330B CN103505330B CN201310472964.1A CN201310472964A CN103505330B CN 103505330 B CN103505330 B CN 103505330B CN 201310472964 A CN201310472964 A CN 201310472964A CN 103505330 B CN103505330 B CN 103505330B
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Abstract
A kind of pressure-feedback-type is automatic turnover bed, including bed body, drive mechanism and pressure sensing automatic control system: described bed body is made up of bottom bed board, middle level bed board, upper strata mobile bed plate, head of a bed baffle plate, cabinet base baffle plate, left side baffle plate, right-hand apron, described drive mechanism is made up of Hydraulic Power Transmission System and quadric chain, on described bottom bed board, oil plant case is set, described sensing and controlling system is made up of pressure transducer, decoder and automatic control circuit, for controlling the work of described Hydraulic Power Transmission System.The present invention realizes system multidimensional, multi-angle, regulatable folding and upset, it is achieved to patient location, the isoparametric collection of weight, and realizes parameter identification, and independently sets the function of kinematic parameter.
Description
Technical field
The present invention relates to medical health apparatus technical field, particularly a kind of pressure-feedback-type is automatic turnover bed.
Background technology
China's aged's number is increasing, for improving the self-care ability of patient, alleviating nursing staff's working strength, protects
The market demand of reason bed strengthens and urgently day by day.
People with disability and paralytic's illnesses often require long-term bed, the most under gravity, patient's back
With buttocks will pressurized for a long time, produce decubital ulcer.Traditional solution is to need nurse or household often patient to stand up, but takes
Time laborious, poor effect.Additionally along with expanding economy, the problem of an aging population is also on the rise.There is empty nest in some cities
Family, old people especially elderly patients can not get looking after for a long time.Owing to old people's illnesses is many based on chronic disease, need long
Phase carries out physics mode nursing.Therefore be equipped with necessity care appliances, a kind of can be the nursing bed of turn-over bed for patient just
Seem particularly significant.
Through retrieval to current existing technical literature, we medical care bed can divide as follows by existing
Class:
From frame for movement, the current domestic medical care bed three major types that is divided into: the first kind is that semireclining is got up sitting (supporting back
Bent lower limb type), such as multifunction nursing bed (number of patent application: 02289820) of Xu Feng outstanding person's invention, main purpose is to realize patient
Sit up above the waist, reach physical comfort position, take medicine with convenient eating.This nursing bed extensively makes at Various Hospitals
With, but fail to solve this medical care difficult problem of decubital ulcer.Equations of The Second Kind for rollover Stryker frame, main purpose be solve decubital ulcer problem, as by
Automatic turnover bed (number of patent application: 02114415) of Zou Xianchun invention etc..But due to the limitation of mechanism's design, this kind of bed
Stand up angle typically only 30 ° 50 °, reach far away the most comfortable state 90 ° that Human Physiology is stood up, patient's back is still pressed
On bedding, the generation of solution decubital ulcer not yet in effect.3rd class is multi-functional Stryker frame, it is possible to realize various deformation, complete supporting back,
The bent action request such as lower limb, rollover, such as the mechanical nurse (patent No. 200920163785) etc. of Feng Meishan invention.But this kind of Stryker frame
It is mostly external import, expensive, and also structure is complicated, and mechanism kinematic space is restricted, and major part product rollover angle is not
Preferable.
It addition, from type of drive, domestic medical care bed point can be divided into Non-follow control and Electronic control two class, Qi Zhong electricity
Dynamic control is due to its easy labour-saving mode of operation, the most reliably course of action, and is welcome by market.
Although nursing bed present on domestic market can realize standing up, but its common drawback is to use people
Industry control system, but for the patient that cannot take action, it may be difficult to accomplish that hand control nursing bed is operated, therefore develop
A kind of just can be particularly important with the nursing bed of self-timing operation.
From hospital and the angle analysis of patient, use common medical bedstead really can save expense, alleviate medical burden,
But being unfavorable for patient's quick recovery, this problem can not be ignored.Our the intelligent recovering physiotherapy aid system of exploitation can
To make up the deficiency of this series products on market.
Intelligent recovering physiotherapy aid system solves the weak point of above three major types medical bedstead, and it can realize system
Various dimensions, multi-angle, regulatable folding and upset, it is possible to use pressure transducer realizes the parameter such as patient location, weight
Collection, it is also possible to the system that realizes is to parameter identification, and independently sets operating path, kinematic parameter.
Summary of the invention
It is an object of the invention to overcome the deficiency of the special rehabilitation bed of existing paralytic, it is provided that a kind of pressure is anti-
Feedback formula is automatic turnover bed, and this is the rehabilitation bed of the most comfortable more automatization, by the fractionation mode different to whole bed board, changes
Becoming purely mechanic property operation structure, application hydraulic pressure double leval jib combination unit improves design, and sensor is automatically controlled application
Among each piece of collapsible bed board, thus realizing the diversification of the bed body direction of motion, when reducing bed board upset, the micro-of generation shakes
Dynamic, reduce manual operation complicated in rehabilitation course, it is ensured that patient has safe and comfortable environment over the course for the treatment of.
The technical solution of the present invention is as follows:
A kind of pressure-feedback-type is automatic turnover bed, it is characterised in that: include that bed body, drive mechanism and pressure sensing are controlled automatically
System processed:
Described bed body is by bottom bed board, middle level bed board, upper strata mobile bed plate, head of a bed baffle plate, cabinet base baffle plate, left side gear
Plate, right-hand apron are constituted, described bottom bed board and middle level bed board and described head of a bed baffle plate, cabinet base baffle plate, left side baffle plate, the right side
Side shield is permanently connected together by four, corner column, and described upper strata mobile bed plate is by equivalently-sized left head bed
Plate, left side bed board, left foot bed board, right head bed board, right side bed board, right crus of diaphragm bed board are interconnected by seven embedded hinge flap plates
Constitute；
Described drive mechanism is made up of Hydraulic Power Transmission System and quadric chain, arranges on described bottom bed board
Oil plant case, with the left side bed board of described upper strata mobile bed plate, right side bed board, left head bed board with right on described middle level bed board
Position between head bed board, between left foot bed board and right crus of diaphragm bed board is respectively provided with left side hydraulic quadric chain, right side to liquid
Described upper strata mobile bed plate is supported into by pressure quadric chain, head of a bed hydraulic pressure quadric chain with cabinet base hydraulic pressure quadric chain
One stable mobile bed plate；
Described sensing and controlling system is made up of pressure transducer, decoder and automatic control circuit, is used for controlling described
The work of Hydraulic Power Transmission System.
Six pieces of pressure transducers, pressure transducer conduct laterally it is sequentially distributed on described left side bed board and right side bed board
The signal input part of automatic control system.
The described both sides at the bottom of bed body are equipped with mobile supporting mechanism more than two, lateral symmetry, and each group is moved
Support mechanism is made up of with axle and directive wheel damping spring, and described axle and directive wheel composition universal wheel, universal wheel contacts with ground.
Described damping spring is hard spring, air spring or liquid spring.
Described hydraulic pressure quadric chain includes that one end has a clamped hinge, and the other end has a sleeved Hydraulic Main lever, one
End has clamped hinge, the driven expansion link that the other end is hinged with support bar, and the free end of described support bar is through described set
Cylinder, two described clamped hinges are fixed on described middle level bed board, and the free end of described support bar is fixed in the following manner:
The projection of the free end of the support bar of described head of a bed hydraulic pressure quadric chain is movably coupled to and a described left side
In head board and the adjacent fixing draw-in groove of right head board, the free end of the support bar of described cabinet base hydraulic pressure quadric chain
Projection be movably coupled to in the described left foot of the bed and the adjacent fixing draw-in groove of the right foot of the bed, described left side hydraulic
The free end of the support bar of quadric chain is fixedly linked with described left plate, described right side hydraulic quadric chain
The free end of support bar is fixedly linked with described left plate.Described automatic control circuit uses pressure transducer as signal
Input, through described decoding circuit and control circuit by the lifting of the Hydraulic Main lever described in controlling to realize bed board dead axle
Rotary motion.
Be provided with the touch screen-device of liquid crystal display in bed side, this touch screen-device has rotating mechanism in horizontal plane, and display is worked as
The state of front bed body, by clicking on corresponding parameter, so that bed body completes head of a bed lift action, action, bed are stood up in lateral left and right
Foot lifts and falls action.
The cabinet base baffle plate of described bed body, left side baffle plate, right-hand apron are connected with bed body by trip mechanism, a described left side
It is side rail that side plate right plate exceeds the part of described upper strata mobile bed plate.
The technique effect of the present invention is as follows:
Bed board of the present invention, by the identical square plank of six sizes, uses embedded hinge to be interconnected to form.Dynamic
Under power drives, bed board can realize: head two plate rotates up, and foot two plate rotates to upper and lower two directions, left side three plate linkage
Being rotated up, right side three plate linkage is rotated up.
Bedstead be slightly larger in dimension than bed board, bed board can be made to be embedded, hydraulic stem drives the upset of bed body, four, corner
Column ensures the stability of bed body, is subject to the main body of pressure, it is ensured that bed is static when, and motion structure is substantially not stress
's.Dismountable head of a bed guardrail, bed side rail is had, it is ensured that patient's safety when rotating with bed body on bed frame.On bedstead also
With side board, wherein, cabinet base baffle plate is detachable, it is simple to bed body transmission system maintenance and critically ill patient go to bed, when cleaning
Convenient.
Drive mechanism of the present invention is made up of hydraulic pressure quadric chain.First it is two fixed pivots, between two fulcrums,
We regard a fixing bar as it, then before fulcrum on be hinged a hydraulic stem, after hinge expansion link on fulcrum,
Hydraulic stem is driving mechanism, and expansion link is follower, needs the different angles rotated according to bed board, hydraulic stem elongation different away from
From.Hydraulic stem and expansion link free end respectively with a support bar hinge.Form hydraulic pressure double leval jib drive mechanism.It is responsible for two
The actuating device that side rotates is fixed hinged with side two boards.The when that double leval jib standing up about realizing and stands up to move,
Hydraulic stem stretching motion to be done；Realizing helping patient to land when, hydraulic stem then needs to be compressed motion.
The automatic control system of the present invention by sensor-based system, analyze system, circuit control system, pulse generating system, aobvious
Show the part compositions such as system.
Sensor-based system is made up of the six pieces of pressure transducers being distributed in the middle of bed board on three pieces of platelets.When human body lies on a bed
Time, inherently press wherein 3 to 4 pieces of sensors.On every piece of sensor, pressurized has regarded as input signal when being more than certain numerical value.Point
After analysis system analyzes input signal, it is determined that the direction of rotation of bed body, through circuit control system, control elongation or the receipts of hydraulic stem
Contracting, makes actuator movement.By regulation pulse generating unit, the rotary speed of scalable forms.Display system can be instant
Show current rotary speed.
The mobile damping of the present invention is made up of with directive wheel damping spring.Wherein, damping spring one end is connected to lead
Above wheel, the other end is connected with bed base plate.Every limit is installed three groups and is moved damping, totally six groups.Realize the shock-absorbing of bed body
Performance and travelling performance
The present invention is from how realizing the stability of bed body upset, improving the ruggedness of device and reduce unnecessary artificial
From the standpoint of operation etc., whole mechanical dynamic system is improved.It is noted that such scheme is not independent,
These schemes synthesis can be considered by researcher according to concrete design needs.
Compared with prior art, beneficial effects of the present invention:
1. hydraulic pressure double leval jib combination unit is utilized to realize system multidimensional, multi-angle, regulatable folding and upset.
2. pressure transducer is utilized to realize patient location, the isoparametric collection of weight.
3. the system that realizes is to parameter identification, and independently sets kinematic parameter.
Realize the motion of various dimensions, effectively reduce bed body and lift the vibration brought, at the base of the stability ensureing sick bed
On plinth, the sensor complicated manual operation being completely converted into intelligence controls, and the rehabilitation making patient is more smooth.
Accompanying drawing explanation
The automatic turnover bed three-dimensional structure diagram of Fig. 1 pressure-feedback-type of the present invention
Fig. 2 is Fig. 1 bed body top view
Fig. 3 Fig. 1 bed body internal structure front view
Fig. 4 is bed body internal structure left view
Fig. 5 hydraulic pressure quadric chain schematic diagram
Fig. 6 head of a bed, cabinet base drive mechanism bed board junction schematic diagram
Fig. 7 bed body moves damping schematic diagram
Fig. 8 pressure transducer position distribution schematic diagram on bed board
Fig. 9 control system flow chart
Figure 10 control system circuit diagram
Figure 11 timing chart
Figure 12 decoder circuit lays figure
In figure:
1, bed frame 2, part bed board
3, hinge 4, drive mechanism and bed board junction, right side
5, cabinet base baffle plate draw-in groove 6, cabinet base baffle plate
7, drive mechanism and cabinet base bed board junction 8, drive mechanism and bed board junction, left side
9, drive mechanism and head of a bed bed board junction 10, bed body drive mechanism space
11, head of a bed baffle plate 12, bed body side rail
13, head of a bed hydraulic pressure quadric chain draw-in groove 14, head of a bed hydraulic pressure quadric chain
15, bed board 16, cabinet base hydraulic pressure quadric chain
17, damping spring 18, wheel shaft
19, damping 20, bed body rear hydraulic case are moved in bed body rear portion
21, side hydraulic quadric chain 22, bed body front portion hydraulic pressure double leval jib drive mechanism
23, damping is moved in bed body bottom plate 24, bed body front portion
25, guardrail 26, bed body hydraulic fluid tank and track laying space on front side of bed body
27, rubber wheel 28, support bar
29, sleeve 30, pin joint
31, driven expansion link 32, expansion link and two layers of clamped hinge of bed board
33, hydraulic stem 34, hydraulic stem and two layers of clamped hinge of bed board
35, partial left side bed board 36, partial right side bed board
37, hydraulic pressure quadric chain draw-in groove 38, liquid crystal touch control screen
39, circuit box
Detailed description of the invention
With embodiment, the present invention is elaborated below in conjunction with the accompanying drawings: this enters under premised on technical solution of the present invention
Row is implemented, and gives concrete implementation, but protection scope of the present invention is not limited to following embodiment.
Below in conjunction with the accompanying drawings technical solution of the present invention is described further.
First refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, be preferred embodiment structural representation, as seen from the figure, the present invention
The automatic turnover bed most preferred embodiment of pressure-feedback-type, including bed body, drive mechanism, pressure sensing automatic control system and mobile
Support mechanism:
Described bed body is by bottom bed board 23, middle level bed board, upper strata mobile bed plate, head of a bed baffle plate 11, cabinet base baffle plate 6, a left side
Side shield, right-hand apron are constituted, described bottom bed board 23 and middle level bed board and described head of a bed baffle plate 11, cabinet base baffle plate 6, a left side
Side shield, four, right-hand apron corner column are permanently connected together, and described upper strata mobile bed plate is by an equivalently-sized left side
Head bed board, left side bed board, left foot bed board, right head bed board, right side bed board, right crus of diaphragm bed board are by seven embedded hinge flap plates
Interconnection is constituted；
Described drive mechanism is made up of Hydraulic Power Transmission System and quadric chain, sets on described bottom bed board 23
Put oil plant case 22,20, with the left side bed board of described upper strata mobile bed plate, right side bed board, left head on described middle level bed board
Position between bed board and right head bed board, between left foot bed board and right crus of diaphragm bed board be respectively provided with left side hydraulic quadric chain,
Right side hydraulic quadric chain, head of a bed hydraulic pressure quadric chain and cabinet base hydraulic pressure quadric chain are by described upper strata pulldown bed
Plate supports into a stable mobile bed plate；
Described sensing and controlling system is made up of pressure transducer, decoder and automatic control circuit, is used for controlling described
The work of Hydraulic Power Transmission System.
Six pieces of pressure transducers, pressure transducer conduct laterally it is sequentially distributed on described left side bed board and right side bed board
The signal input part of automatic control system.
The described both sides at the bottom of bed body are equipped with mobile supporting mechanism more than two, lateral symmetry, and each group is moved
Support mechanism is made up of with axle 18 and directive wheel 27 damping spring 17, and described axle 18 and directive wheel 27 form universal wheel, universal wheel
Contact with ground.
Described damping spring 17 is hard spring.
Described hydraulic pressure quadric chain includes that one end has clamped hinge 32, and the other end has the Hydraulic Main lever of sleeve 29
33, one end has clamped hinge 34, the driven expansion link 31 that the other end is hinged with support bar 28, the free end of described support bar 28
Through described sleeve 29, two described clamped hinges 32,34 are fixed on described middle level bed board, described support bar 28 from
Fixed in the following manner by holding:
The projection of the free end of the support bar 28 of described head of a bed hydraulic pressure quadric chain is movably coupled to described
In left head board and the adjacent fixing draw-in groove 37 of right head board, the support bar 28 of described cabinet base hydraulic pressure quadric chain from
By the projection held be movably coupled to in the described left foot of the bed and the adjacent fixing draw-in groove 37 of the right foot of the bed, a described left side
The free end of the support bar 28 of side hydraulic quadric chain is fixedly linked with described left plate, described right side hydraulic four
The free end of the support bar 28 of linkage is fixedly linked with described left plate.
Described automatic control circuit use pressure transducer is as signal input part, through described decoding circuit and control
Circuit is moved to realize bed board System of Rotating about Fixed Axis by the lifting of the Hydraulic Main lever 33 described in control.
Being provided with the touch screen-device of liquid crystal display in bed side, have rotating mechanism in horizontal plane, this touch screen-device shows works as
The state of front bed body, by clicking on corresponding parameter, so that bed body completes head of a bed lift action, action, bed are stood up in lateral left and right
Foot lifts and falls action.
The cabinet base baffle plate 6 of described bed body, left side baffle plate, right-hand apron are connected with bed body by trip mechanism, described
It is side rail that left plate right plate exceeds the part of described upper strata mobile bed plate.
In the present embodiment:
Described upper strata mobile bed plate top view as shown in Figure 2, bed board is overall wide 1.4 meters, long 2.1 meters, big by six
Little identical square plank, uses embedded hinge to be interconnected to form.Under power drive, bed board can realize: head two
Plate rotates up 45 °, and foot two plate is rotated down 45 °, or is rotated up 20 °, and left side three plate linkage is rotated up 45 °, right
Side three plate linkage is rotated up 45 °
Actuating device is as it is shown in figure 5, described hydraulic pressure double leval jib drive mechanism.Two clamped hinges 32,34 respectively with middle level
Bed board is connected, as shown in Fig. 3 midship section front view and Fig. 4 midship section left view.Between two clamped hinges 32,34 at a distance,
Be equivalent to a bar in quadric chain.Hydraulic Main lever 33 sleeve 29 is connected with support bar 28.Driven expansion link 31.Due to
The head of a bed is different with the initial position of cabinet base actuating device from the actuating device of side, for ease of Control System Design, therefore in the diagram
26 spatial arrangement the first oil plant case 22 and the second oil plant casees 20.The liquid being positioned in Fig. 2 in the drive mechanism on 4,8,9 positions
Depression bar is connected with the first oil plant case 22 in Fig. 3, the hydraulic stem being positioned in Fig. 2 in the drive mechanism on 7 positions and the second oil in Fig. 3
Hopper 20 is connected.
Two groups of drive mechanisms that control bed board laterally rotates are fixing with two pieces of bed boards in centre position respectively to be connected, fixed bit
Put as shown in Fig. 24,8.When bed board lifts, such as Fig. 5, Hydraulic Main lever 33 slowly extends, and makes 28 support bars around hinged place 30
Rotate.Owing to free end is fixed on bed board, when bed board rises, generation displacement difference on driven expansion link 31 can be caused.At this moment, from
Dynamic expansion link 31 extends, and makes up displacement difference, makes bed board can do steady circular motion around axle, thus realizes from Linear transmission to circle
The conversion of Zhou Yundong.
In order to realize the bed board head of a bed and lift, berth falls the reasonable conversion with lateral movement, thus four groups of drive mechanisms from
Can not all fixing with the bed board of relevant position 4 shown in Fig. 2,7,8,9 be connected by end, otherwise when bed board laterally rises, due to
7,9 two positions are connected with rod member, can cause motion conflict.So, the present invention controls head of a bed bed board and rises to fall with cabinet base bed board
Under drive mechanism be connected with bed board by the attachment means cross-section front view shown in Fig. 6 respectively.As shown in Figure 6, when side bed board
35, when one piece of bed board in the side bed board representated by side bed board 36 does flip-flop movement, it is set to side bed board 36, owing to side bed board 36 is lifted
Rising, make the draw-in groove 37 being fixed thereon move along with the motion of side bed board 36 plate, now support bar 28 will not stop side bed board
The motion of 36.When head board lifts or the foot of the bed falls, as shown in Figure 6, the draw-in groove 37 on both sides can be by the connection of actuating device
End is coated on wherein, is equivalent to fixing and realize the head of a bed when lifting the motion fallen with cabinet base onboard, 4,8 position institute in Fig. 2
Bed board in position is not involved in motion, therefore will not form motion conflict.When the head of a bed lifts, such as Fig. 5,33 hydraulic stems are slowly stretched
Long, make 28 support bars rotate around junction 30.Owing to free end is fixed on bed board, when bed board rises, can cause and produce on bar 31
Raw displacement difference.At this moment, driven expansion link 31 extends, and makes up displacement difference, makes bed board can do steady circular motion around axle.Work as cabinet base
When falling, such as Fig. 5,33 Hydraulic Main levers slowly shorten, and make 28 support bars rotate around junction 30.Owing to free end is fixed on bed
On plate, when bed board rises, generation displacement difference on driven expansion link 31 can be caused.At this moment, driven expansion link 31 shortens, and makes up displacement
Difference, makes bed board can do steady circular motion around axle.
Described travel mechanism:
The position distribution of damping is moved as it is shown in figure 1, lateral symmetry in bed body one side, is respectively arranged with three groups.The most every
One group is moved directive wheel two parts that damping is made up of 17 damping springs and axle 18, wheel 27 and forms.When bed board lifts
Time, owing to hydraulic stem 33 the most unavoidably causes vibrations, the patient on bed may be made to feel a little vibratory sense, thus
Cause uncomfortable, add damping spring and can effectively play damping effect.18,27 universal wheels collectively constituted can facilitate heavy
Bed body moves, and facilitates the hygiene work of hospital and the rescue work of patient.
Automatic control system
As shown in Figure 8, wherein major part is formed the flow chart of the automatic control system of the present invention by following 4, it may be assumed that
Sensor input, decoder, controller, three ingredients of action device.
Sensor in bed body position as it is shown in figure 9, owing to the main by weight of people concentrates on abdominal part, buttocks and leg.Cause
This, by six pieces of sensors as it is shown in figure 9, be arranged on middle two pieces of bed boards.Sensor is 0.2 away from bed board edge outermost distance
Rice, inner sensors is 0.15 meter away from bed board inside edge distance.Sized by pressure transducer, the square of about 0.075 meter is thin
Sheet, its thickness is negligible compared with entirety.Two-by-two at a distance of about 0.6 meter between three pieces of sensors on the bed board of every side.Warp
Test, when sensor is so placed, can cover the most all possible positions of human body.The minimum of sensor identifies that stress is
70N。
Decoder circuit: the present invention uses the method that chip combines with gate, is converted into two by sensor signal and enters
The signal of telecommunication of system, chip uses 74138 chips, and gate connects according to concrete state equation selectivity, implements
Method is as follows:
Need the 6 pieces of sensors realizing being dispersed with on two pieces of bed boards of automatic control as shown in Figure 9, correspond to 6 input ports,
It is set to A, B, C, D, E, F.Tri-pieces of sensors of DEF are positioned at the bed board on the left side, and tri-pieces of sensors of ABC are positioned at the bed board on the right.Work as biography
The pressure that sensor bears exceedes setting value, and the when of i.e. more than 70N, the value of its input is exactly " 1 ", otherwise is exactly " 0 ".We are
The output signal of telecommunication needed for end has two, represents with Si and Ci respectively, and the priority of latter of which is more than the former.
For Si, " 1 " is that the left side representing bed board is lifted, and " 0 " is that the bed board on the right of representing lifts；Ci is come
Saying, " 1 " is to represent effective status, and " 0 " is to represent disarmed state.Specifically lie in view of sensor distribution on bed board and people
Width in bed body, is 3 or 4 sensor-triggered number and is classified as effective status, analyzes according to above, lists the true of the present invention
Value table is as follows:
Table 1. decoder truth table
It is designed in conjunction with 74138 chips, it would be desirable to two pieces of such chips.First chip block, input is from a high position
To low level successively: C, B, A, output port is set toSecond chip block, input from a high position to low level successively:
F, E, D, output port is set to
The principle of 74 × 138 chips is exactly decoder, existing as a example by the first chip block, introduces the logic state of decoder
Table:
Table 2. decoder logic state table
| C | B | A | Y0 | Y1 | Y2 | Y3 | Y4 | Y5 | Y6 | Y7 |
| 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The state equation of decoder is drawn with this:
Decoder circuit is laid as shown in figure 12
Output signal to decoder, it has following concrete corresponding relation with outfan:
That is: work as decoder output, i.e. represent Si signal end that left or right bed board lifts and represent effective or invalid Ci
When the signal of telecommunication of signal end is 1, corresponding mechanical output action is oil plant case valve opening and completes force feed action, makes hydraulic pressure
Bar extends.Six outfan Q1 Q6 represent anterior oil plant case, head fuel feed tube valve, left side fuel feed tube valve, right side respectively
Fuel feed tube valve, foot's oil plant case, foot's fuel feed tube valve.The virtual condition conversion table of its correspondence is as follows:
Thus state transition table can obtain state equation:
According to above-mentioned condition conversion equation, obtain the circuit connection diagram shown in Figure 10.
Pulse signal generation device as shown in figure 11, touches owing to the JK flip-flop shown in Fig. 9 has signal trailing edge
The characteristic sent out, therefore this circuit can control the rise time established by regulating the cycle length of pulse signal, thus control
The maximum angle that bed board rises.
Claims (7)
1. a pressure-feedback-type is automatic turnover bed, it is characterised in that: include that bed body, drive mechanism and pressure sensing automatically control
System:
Described bed body by bottom bed board (23), middle level bed board, upper strata mobile bed plate, head of a bed baffle plate (11), cabinet base baffle plate (6),
Left side baffle plate, right-hand apron are constituted, described bottom bed board (23) and middle level bed board and described head of a bed baffle plate (11), cabinet base gear
Plate (6), left side baffle plate, four, right-hand apron corner column are permanently connected together, and described upper strata mobile bed plate is by size
Identical left head bed board, left side bed board, left foot bed board, right head bed board, right side bed board, right crus of diaphragm bed board are by seven embedded hinges
The interconnection of flap plate is constituted；
Described drive mechanism is made up of Hydraulic Power Transmission System and quadric chain, arranges on described bottom bed board (23)
Oil plant case (22,20), with the left side bed board of described upper strata mobile bed plate, right side bed board, left head on described middle level bed board
Position between bed board and right head bed board, between left foot bed board and right crus of diaphragm bed board be respectively provided with left side hydraulic quadric chain,
Right side hydraulic quadric chain, head of a bed hydraulic pressure quadric chain and cabinet base hydraulic pressure quadric chain are by described upper strata pulldown bed
Plate supports into a stable mobile bed plate；
Described pressure sensing automatic control system is made up of pressure transducer, decoding circuit and automatic control circuit, is used for controlling
Make the work of described Hydraulic Power Transmission System；
Described hydraulic pressure quadric chain includes that one end has expansion link and the two layers of clamped hinge of bed board (32), and the other end has sleeve
(29) Hydraulic Main lever (33), one end has hydraulic stem and the two layers of clamped hinge of bed board (34), and the other end cuts with scissors with support bar (28)
The driven expansion link (31) connect, the free end of described support bar (28) through described sleeve (29), described expansion link with
The two layers of clamped hinge of bed board (32) and hydraulic stem and the two layers of clamped hinge of bed board (34) are fixed on described middle level bed board, and described props up
The free end of strut (28) is fixed in the following manner:
The projection of the free end of the support bar (28) of described head of a bed hydraulic pressure quadric chain is movably coupled to and a described left side
In head bed board and the adjacent fixing draw-in groove (37) of right head bed board, the support bar (28) of described cabinet base hydraulic pressure quadric chain
The projection of free end be movably coupled to in described left foot bed board and the adjacent fixing draw-in groove (37) of right crus of diaphragm bed board, described
The free end of support bar (28) of left side hydraulic quadric chain be fixedly linked with described left side bed board, described right side
Free end to the support bar (28) of hydraulic pressure quadric chain is fixedly linked with described right side bed board.
2. the pressure-feedback-type as described in claim 1 is automatic turnover bed, it is characterised in that described left side bed board and right side bed
Laterally being sequentially distributed six pieces of pressure transducers on plate, pressure transducer is as the signal input part of automatic control system.
3. the pressure-feedback-type as described in claim 1 is automatic turnover bed, it is characterised in that the described both sides at the bottom of bed body are all provided with
Have a mobile supporting mechanism more than two, lateral symmetry, each group move supporting mechanism by damping spring (17) and axle (18) and
Directive wheel (27) forms, and described axle (18) and directive wheel (27) composition universal wheel, universal wheel contacts with ground.
4. the pressure-feedback-type as described in claim 3 is automatic turnover bed, it is characterised in that described damping spring (17) is hard
Spring, air spring or liquid spring.
5. the pressure-feedback-type as described in claim 1 is automatic turnover bed, it is characterised in that described automatic control circuit uses
Pressure transducer is as signal input part, through described decoding circuit with control circuit by the Hydraulic Main lever described in control
(33) lifting is to realize the motion of bed board System of Rotating about Fixed Axis.
6. automatic turnover bed according to the pressure-feedback-type described in claim 1, it is characterised in that to be provided with liquid crystal display in bed side
Touch screen-device, there is rotating mechanism in horizontal plane, this touch screen-device shows the state of current bed body, by clicking on corresponding ginseng
Number, so that bed body completes head of a bed lift action, action is stood up in lateral left and right, and cabinet base lifts and falls action.
7. the pressure-feedback-type as described in claim 1 is automatic turnover bed, it is characterised in that the cabinet base baffle plate of described bed body
(6), left side baffle plate, right-hand apron be connected with bed body by trip mechanism, described left side baffle plate right-hand apron exceeds described
The part of upper strata mobile bed plate is side rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310472964.1A CN103505330B (en) | 2013-10-11 | 2013-10-11 | Pressure-feedback-type is automatic turnover bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310472964.1A CN103505330B (en) | 2013-10-11 | 2013-10-11 | Pressure-feedback-type is automatic turnover bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103505330A CN103505330A (en) | 2014-01-15 |
| CN103505330B true CN103505330B (en) | 2016-09-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310472964.1A Expired - Fee Related CN103505330B (en) | 2013-10-11 | 2013-10-11 | Pressure-feedback-type is automatic turnover bed |
Country Status (1)
| Country | Link |
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| CN (1) | CN103505330B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104523383B (en) * | 2014-12-25 | 2016-12-07 | 南通康盛医疗器械有限公司 | A kind of stretcher |
| CN105796263A (en) * | 2016-03-09 | 2016-07-27 | 深圳市前海颐老科技有限公司 | Automatic overturning device and method for old people |
| CN109739132A (en) * | 2016-03-15 | 2019-05-10 | 国家康复辅具研究中心 | A kind of electric foldable bath bed |
| CN105919750A (en) * | 2016-06-22 | 2016-09-07 | 北京京东科技有限公司 | Electric bed |
| CN105919748A (en) * | 2016-06-22 | 2016-09-07 | 北京京东科技有限公司 | Electric turn-over bed |
| CN106333828B (en) * | 2016-09-28 | 2019-06-14 | 重庆钧爱博科技有限公司 | Limb motion device for rehabilitation |
| CN107049657B (en) * | 2017-05-23 | 2023-03-03 | 金华市中心医院 | Medical care system |
| CN107212979A (en) * | 2017-07-20 | 2017-09-29 | 王晓东 | One kind automation is monitoring bed |
| CN107456336A (en) * | 2017-08-29 | 2017-12-12 | 范师华 | A kind of hydraulic regulation bed capable of nursing and supporting patient |
| CN107692657A (en) * | 2017-09-05 | 2018-02-16 | 中山乐宜嘉家居设备有限公司 | A kind of beddo |
| CN110464552B (en) * | 2018-04-28 | 2020-10-30 | 刘廷芳 | Medical stretcher with cushioning function |
| CN109009742B (en) * | 2018-07-02 | 2020-03-27 | 孟伟 | Medical sick bed convenient to fold and store |
| CN112043524B (en) * | 2018-10-12 | 2021-12-21 | 合肥工业大学 | Sectional type posture adjustment mechanism |
| CN109044671B (en) * | 2018-10-12 | 2020-10-30 | 合肥工业大学 | Hydraulic nursing bed |
| CN109833164A (en) * | 2019-03-13 | 2019-06-04 | 上海长征医院 | A kind of intelligent automation equipment for supporting patient with burn |
| CN112618191B (en) * | 2020-12-22 | 2021-09-24 | 吉林大学 | A supplementary limbs lifts up turnover device for brain surgery nursing |
| CN113662771A (en) * | 2021-08-02 | 2021-11-19 | 江汉大学 | Bed body system for assisting in turning over and control method |
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| CN103505330A (en) | 2014-01-15 |
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