CN1351862A - Traction bed for human body - Google Patents

Abstract

A human body traction bed consists of bed board, traction bed board, floating bed board, pushing mechanism, driving and controlling mechanism and other parts. The bed board may be extended or contracted freely while the traction bed is used for integrated traction of human body; and may be sectioned while it is used for local traction. during traction, the sliding friction between human body and bed board may be converted into rolling friction between the bed board and the bed frame. During traction, the magnitude and direction of traction force, the traction speed, time and distance may be controlled precisely and regulated at the right time manually or electrically. The traction bed may be used in hospital and in household.

Description

Traction bed for human body

The present invention relates to a kind of medical health equipment that human body is drawn, especially under human body couches state, can be by doctor or user oneself operation, perhaps control automatically by equipment according to predefined program, human body is carried out integrally dragging, or only the human body appointed part is carried out the traction bed for human body of local traction.

In order to cure the disease to patient or to make its rehabilitation, usually need human body (trunk) is carried out integrally dragging or local traction, common people unfold muscles and bones for allaying tiredness, also need health is carried out health integrally dragging or local traction.Human body traction medical health equipment commonly used mostly is local vertical pulling equipment in hospital and the family at present, as treating fracture and cervical spondylosis, the traction frame that has pulley and weight of lumbar spondylosis, portable type traction apparatus for cervical vertebrae, inflated portable pate tractor etc.In order to draw (as fractured leg and lumbar vertebra for bedfast patient, cervical spondylopathy patient etc.), the doctor also adopts bed to go up traction, with of bed hedgehopping sick bed, make patient when couching, produce a sliding force, install pulley and weight additional of sick bed bed hedgehopping then, hold patient's a certain position (sliding force that goes the balance human body to produce) with the gravity of weight body local is implemented traction, these traction methods are subjected to the restriction of pulling equipment, human body can not loosen comprehensively in the distraction procedure, pull strength is difficult for accurately control and inconvenience is regulated, reinforcing is not steady, and patient is difficult for nursing, influences therapeutic effect.And existing human body pulling equipment does not possess simultaneously yet human body is carried out integrally dragging and local this dual-use function of traction.

Large hospital is brought into use a kind of electronic two-part traction bed for human body recently, and for example the patent No. is that " three-dimensional multifunctional recovery extension table " and the patent No. of ZL99237668.8 are ZL94215113.5 " multifunctional recovery extension table ".Their bed board all therefrom part be two sections, this extension table is mainly used in lumbar traction, when being used for the traction of other position, because the waypoint (pull strength application point) of bed board is inconsistent with the traction position, traction effect is not good.Mainly by the traction belt application of force, there is unsettled dry friction in other extension table between human body and the bed board, the traction program is also very numerous and diverse, not easy to operate and use, and the complex structure of this bed, cost is very high, and except that the minority large hospital, general hospital seldom adopts; The patent No. is that the bed board of 99245256.2 " human body traction medical health care bed " is divided into three sections, and its pull strength application point Duo one than the two-part extension table, tentatively possesses human body is carried out integrally dragging and the local dual-use function that draws.Simple in structure, cost is also very cheap, but it has only this a kind of driving control mode of manual manual control, there is not the electric auto-control ability, being not easy to advanced traction program applies, this bed board is divided into three sections, and the pull strength application point has two, has Duoed one than the two-part extension table, but fixed-site can not accomplish that still pull strength application point (bed board waypoint) is consistent preferably with the position, position that human body need draw.For example: the traction that has turned round and look at cervical region, shank is just looked after less than waist, when integrally dragging, has unsettled sliding-frictional resistance between human body and the bed board like this, make each section of human body discontinuity equalization, when drawing in the part, pull strength can not accurately arrive the position that needs traction, influences result of use.

The purpose of patent of the present invention just provides a kind of traction bed for human body, it is except that the function that possesses common bed, can also under human body couches state, carry out integrally dragging (unfolding muscles and bones, allaying tiredness), or as required traction (curing the disease) be implemented in the part of human body human body (trunk); When integrally dragging, can make each position of human body stressed even substantially, when drawing in the part, the application point that can make pull strength is consistent with the position, position of required traction preferably; This extension table can be operated according to own experience and impression at that time oneself driving by user, also can be by the doctor according to the needs for the treatment of by doctor's control operation, can also be according to predefined program by the automatic control operation of equipment; The traction required drive can be the power that staff applies, and also can be the driving force that electric energy is supplied with, and also can possess these two kinds of abilities of manual manual control and electric auto-control simultaneously; This extension table can be used for family as the multipurpose health care bed, also can be used for the bed special of all kinds of hospitals as treatment and rehabilitation.

The purpose of patent of the present invention is to realize like this, extension table is by bedstead, bed board, top-pushing mechanism, driving mechanism and controlling organization are formed, its technical characterictic is that the bed board that is contained on the bedstead is made up of two traction bed boards and several unsteady bed boards, their last plane Dou Chu at grade, two traction bed boards are contained in the two ends of bedstead, unsteady bed board is contained in the middle part of bedstead, the outer end of two traction bed boards respectively fixedly mounts a traction frame, their following both sides are connected by the last plane of guide rail with the two ends of bedstead side bar, unsteady bed board is supported on the slideway at bedstead middle part, they can move in slideway upper edge slideway direction, every unsteady bed board can be by both sides conjunction be connected with adjacent traction bed board or unsteady bed board, also can with the side bar secure bond of bedstead, top-pushing mechanism is installed on the middle cross beam of bedstead, its two propulsion arms just in time are on the symmetrical centre plane on bedstead two long limits, the overhanging end of two propulsion arms respectively be fixed on the bearings of two tractions below the bed board and link to each other, driving mechanism is installed in the bottom of bedstead, it can be connected with top-pushing mechanism by machinery or conduit under fluid pressure, controlling organization passes through electric wire, mechanical handle or handwheel are connected with driving mechanism, this traction bed for human body can be manually manual separately, also electric auto-control separately also can possess this two covers driving control device of manual manual control and electric auto-control simultaneously.

The drawing-in motion of this traction bed for human body is to produce like this, in the time will implementing traction to human body, driving mechanism under the control of controlling organization to the top-pushing mechanism conveyance drive force, two propulsion arms that promote top-pushing mechanism are made the subtend rectilinear motion along vertical (long side direction) symmetrical plane of extension table, two traction bed boards that promote simultaneously to be fixedly linked with propulsion arm separate to the two ends of bed on bedstead simultaneously, or simultaneously to the middle part of bed return; When two traction bed boards during, be fixed on two two traction frame on the traction bed board and connecting the human body traction belt that human body one end connecting traction frame by an end user that couches is in bed stretched from the two ends traction simultaneously to the two ends of bed split movement; If at this moment stop the work of driving mechanism, under the self-locking action of top-pushing mechanism, the people knows from experience maintenance and is pulled extended state; When drawing bed boards simultaneously to the motion of the middle part of bed for two, traction bed for human body is promptly accused and is finished with regard to return unloading, drawing-in motion.

Human body extension table of the present invention is in order to carry out integrally dragging to human body under the state that is implemented in human body and couches, can implement local traction to human body as required again, and it is stressed even substantially that the partes corporis humani is divided, the pull strength application point is consistent with the position, position of required traction preferably, the bedstead of traction bed for human body, have many features on the structure of bed board: its bedstead is by side bar, crossbeam, guide rail, slideway and footpost are formed, guide rail is contained in planar two ends on the bedstead side bar, seat board is fixed on the side bar of bedstead under it, its loam cake is fixedly linked with the lower plane both sides of traction bed board, between the loam cake of guide rail and the following seat board bearing is housed, interlock and spacing mutually between loam cake and following, make the traction bed board can only be with respect to the bedstead shift position in direction that guide rail limits and scope, and the two can not be separated, slideway is contained in planar middle part on the bedstead side bar, it is supporting unsteady bed board that it can be moved in slideway upper edge slideway direction, but can not move to other direction, be installed in two traction bed boards at two ends above the bedstead, their outer end is installed with traction frame, the inboard is provided with the conjunction that can combine with unsteady bed board, the lower plane middle part is installed with bearing, propulsion arm in the top-pushing mechanism is connected with the traction bed board by this bearing, the unsteady bed board that is installed in the bedstead middle part can be made up of several the plates that width does not wait, the both sides of each piece plate all be equipped with can with adjacent unsteady bed board, the conjunction that traction bed board or bedstead side bar are connected, and the position conversion mutually between these unsteady bed boards.Reasonably select to float every of bed board width and arrange their position rightly, just can make the position of the bed board cut-off point of traction bed for human body be in just in time that human body is minimum place to the bed board applied pressure when couching, and these places generally corresponding physical activity more, need the often position of local traction.

Rely on the said structure characteristics of bedstead and bed board, the method of concrete operations is: during integrally dragging, all unsteady bed boards all are not connected with adjacent bed board, the bed board that all floats all is in the free floating state, the approximate state that can " freely stretch " that is in of whole bed board, like this when human body integral traction elongation, dry sliding friction power between human body and the bed board can being changed into floats has lubricated force of rolling friction between bed board and the bedstead, this both can reduce the loss of pull strength, can avoid sliding friction kinestate instability again, jiggly drawback, thus make the partes corporis humani divide stressed energy to keep evenly the distraction procedure working stability.When drawing in the part, make between all unsteady bed boards and the traction bed board and all combine by connector, only the conjunction of the pairing bed board seam in position that needed by human body is drawn is thrown off, at this moment assist again and use corresponding traction belt, just can guarantee the application point of pull strength and the position position consistency of needed by human body traction, thereby can guarantee that local traction effect is good.When the conjunction between all the unsteady bed boards of traction bed for human body and the traction bed board all is in bonding state, perhaps harden the unsteady bed board that lumps together when being fixed on the bedstead with extension table, traction bed for human body just is in the duty of common bed, and at this moment it can not carry out traction work.

The top-pushing mechanism of this traction bed for human body, driving mechanism and controlling organization all have several versions separately, the top-pushing mechanism that is installed on the middle cross beam of bedstead can be the top-pushing mechanism of fluid pressure type, it also can be mechanical top-pushing mechanism, the top-pushing mechanism of fluid pressure type is by bearing, the hydraulic cylinder, oil pipe and propulsion arm are formed, two hydraulic cylinder left sides, right symmetric arrangement is installed on the hold-down support of bedstead middle cross beam, the hydraulic cylinder is connected with hydraulic control valve with the hydraulic pump of driving mechanism by hydraulic oil pipe, one end of propulsion arm and the piston rod of hydraulic cylinder are hinged, the other end is connected with traction bed board bearing down, and the piston in the hydraulic cylinder moves back and forth and promotes propulsion arm and draws bed board and move in cylinder under the promotion of high-voltage oil liquid.

Typical mechanical type top-pushing mechanism is spiral top-pushing mechanism, it is by a screw shaft, two transmission nuts, four connecting rods, 8 transmission raw silks, two thrust plates, two connecting bolts, three bearing blocks and two propulsion arms are formed, screw thread on the screw shaft is divided into two sections, their thread form is all identical with pitch, but rotation direction is respectively left-handed and dextrorotation, these two sections screw threads by the axle journal of intermediate bearing separately, a transmission nut that is mated all is housed on every section screw thread, this two transmission nuts position and left side on screw shaft, the position of right bearing seat is that centrosymmetry is arranged with the centrage of middle bearing bracket all, respectively there is a transmission pin-and-hole in two ears of each transmission nut, each is hinged the pin-and-hole of four connecting rod one ends with pin-and-hole of transmission nut, the pin-and-hole of the other end of two connecting rods on screw shaft both sides passes through trundle, and each is hinged with a pin-and-hole on the thrust plate, thrust plate is connected by connecting bolt with an end of propulsion arm, the other end of propulsion arm is connected by connecting bolt with the bearing that is fixed under the traction bed board, screw shaft is installed on the middle cross beam of bedstead by three bearing blocks, and an end of screw shaft is fixed with the travelling gear or the handwheel of driving mechanism.Formed a rhombus from four connecting rods of this spiral top-pushing mechanism of geometrical relationship, the line of two transmission nuts and two thrust plates is exactly these rhombohedral two diagonal, when driven gear or the rotation of handwheel drive screw axle, two transmission nuts that are contained on the screw shaft can be drawn close to the middle bearing bracket of screw shaft simultaneously, or separate to both sides simultaneously, just changed this rhombohedral cornerwise length, obviously corresponding change also can take place in this rhombohedral another cornerwise length, thereby promotion thrust plate and coupled propulsion arm are done straight reciprocating motion.

The driving mechanism of this patent traction bed for human body is according to used driving force branch, can be manual, also can be electronic, can also be both can manually also can be electronic the combined type driving mechanism, construction features branch according to driving mechanism, can be mechanical, it also can be fluid pressure type, the electrodynamic mechanical type driving mechanism is by motor, driving gear, driven gear, relay be connected electric wire and form, motor is fixedly mounted on the bedstead, it is accepted the electric energy of electrical network by electric wire and accepts the control of controlling organization, the driving gear that is fixedly mounted on the motor rotor shaft is meshed with driven gear on being fixedly mounted on screw shaft, the electric hydraulic driving mechanism is by electric hydraulic pump, the electric-controlled hydraulic control valve, oil tank, oil pipe be connected electric wire and form, electric hydraulic pump, electric-controlled hydraulic control valve and oil tank all are fixedly mounted on the bedstead, perhaps be fixedly mounted on control station below, hydraulic pump is drawn hydraulic oil and pressurization by oil pipe from oil tank, be transported in the hydraulic cylinder of top-pushing mechanism by the electric-controlled hydraulic control valve then and remove to promote pistons work, lean liquor in the hydraulic cylinder returns in the reserve tube after by oil pipe and electric-controlled hydraulic control valve, hand-hydraulic formula driving mechanism and its controlling organization are combined with each other, it is by hydraulic hand-pump, check valve, operating grip, connecting rod, oil pipe, oil tank, handle bracket and manual hydraulic control valve are formed, the support of fixed handle one end, oil tank and hydraulic hand-pump all are fixed on the bedstead next door, hydraulic control valve is installed in the approaching easily place of operating of staff on the bedstead, or be installed in the extension rod end of control crank stiff end, the piston rod of hydraulic hand-pump is hinged by the bar portion of connecting rod and control crank, when last, under when shaking control crank, hydraulic hand-pump is absorption work oil from oil tank by oil pipe and check valve, in pump, pass through check valve again after the pressurization, oil pipe, manual hydraulic control valve is transported in the hydraulic cylinder of top-pushing mechanism and removes to promote pistons work, lean liquor in the hydraulic cylinder is back in the oil tank after by oil pipe and manual hydraulic control valve, the structure of armstrong's patent formula driving mechanism is simpler, it is the end that the handwheel that drives and control this dual-use function with having directly is fixedly mounted on the screw shaft of top-pushing mechanism, possess simultaneously manually and the combined type driving mechanism of electric functions is the combination of above-mentioned manual actuation mechanism and electric driving mechanism, the conversion between them and being interlocked in the controlling organization realizes.

The controlling organization of this patent traction bed for human body can be manually manual controlling organization, it also can be the controlling organization of electric auto-control, can also be both can be manually manual, combined type controlling organization that also can electric auto-control, manually manual controlling organization is that control crank or the handwheel of using in the driving mechanism directly controlled top-pushing mechanism work, or directly rotate the liquid voltage-controlled valve with hands and control propulsion arm mechanism work, it does not need to be provided with specially in addition control element, the controlling organization of electric auto-control is by various pick offs, controller, actuator, emergency braking mechanism, various demonstrations, alarm device is formed with the electric wire that is connected above-mentioned components and parts, the pressure transducer of survey pull strength size commonly used, survey the pick off of pull strength angle direction, the position sensor of survey hauling distance etc. all is fixedly mounted on the appointed part of bedstead, they and the keyboard of importing instruction usefulness, hand held controllers etc. are connected with electronic computer with programme-control by electric wire, the control instruction that electronic computer sends is transferred to various electric switches by electric wire, relay, various control executing mechanism such as electro-hydraulic control valve and various Displaying Meter, the sound accompaniment loudspeaker, displaying alarms such as alarm buzzer, emergency braking mechanism is made up of mechanical braking lock or hydraulic brake valve and brake lock on and off switch, simple automatic controls also can only be made up of above-mentioned subelement, both can be manually manual, also but the combined type of electric auto-control drives controlling organization except that possessing this two covers driving controlling organization of manual manual control and electric auto-control simultaneously, also has the conversion operating mechanism, mechanically operated conversion operating mechanism is by change lever, have the handwheel combination of clutch, idler gear, intermediate gear shaft is formed with the line lock switch with interlock function, hydraulically powered conversion operating mechanism is by hydraulicdirectional control valve, conversion control crank and the line lock switch composition that links with the conversion operations handle, connecting relation between these elements can guarantee when adopting manual manually controlled work mode, conversion and control mechanism will cut off thoroughly that machinery between top-pushing mechanism and the electric driving mechanism links or hydraulic pressure is got in touch, and will cut off the supply of electric power of electric driving mechanism simultaneously; When adopting the electric auto-control working method, can effectively stop manual manual control system to enter duty.

Adopt the traction bed for human body of such scheme, because bed board is divided into traction bed board and unsteady bed board, unsteady bed board is divided into plurality of sections again, all be provided with " closing ", " branch " conjunction easily between the adjacent bed board, and all bed boards all are bearing on the bedstead by bearing, make the bed board segmentation of traction bed for human body both can adjust combination on demand like this, can " freely stretch " again and support therefore to adopt this traction bed for human body to have the following advantages by health:

1, when human body is subjected to pull strength effect elongation strain, unsettled dry sliding friction between human body and the former fixed bed board is become the lubricated rolling friction that has between present unsteady bed board and the bedstead, this had both reduced the loss of pull strength, made distraction procedure more steady again, and effect is more stable.

2, when human body is implemented integrally dragging, because bed board can " freely stretch ", so the partes corporis humani divides stressed evenly, and traction effect is good.

3, when human body is implemented local traction, can only stay a movement joint in pairing bed board position, the position that human body need draw, or only in the appointed area, leave movement joint, can accomplish that like this pull strength application point (movement joint place) is consistent with required traction position, thereby guarantee that local traction effect is good.This human body extension table can be implemented accurately traction to any part of human body trunk, and this treatment to fracture patient is significant.

4, this human body extension table is simple in structure, cheap for manufacturing cost, and its top-pushing mechanism, driving mechanism, controlling organization each have multiple version, and manually manual mechanical push mode traction bed for human body low price can enter family; The various traction bed for human body of electric auto-control are multiple functional, are fit to all kinds of hospitals.Therefore easy to utilize.For the traction bed for human body that adopts electronic computer control, as long as careful design control procedure, appropriately select various pick offs and executive component for use, traction bed for human body just can carry out golden control of azimuth and in time send the medical treatment prompting size, direction, action time, stroke size and the hauling speed etc. of pull strength, therefore this traction bed for human body can be used for clinical treatment in hospital, also can be used for scientific research.

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is the structural representation (being the human body integrally dragging among the figure) of manually manual mechanical spiral push mode traction bed for human body.

Fig. 2 is that the A-A of Fig. 1 is to cross-sectional schematic.

Fig. 3 is that the K of Fig. 2 is to view (sketch map).

Fig. 4 is the structural representation (being the local traction of waist among the figure) of manual manual hydraulic pushing formula traction bed for human body.

Fig. 5 is the structural representation (being the local traction of cervical region among the figure) of electric auto-control machinery spiral push mode traction bed for human body.

Fig. 6 is the structural representation (being the local traction of shank among the figure) of electric auto-control hydraulic pushing formula traction bed for human body.

But Fig. 7 is not only can be manually manual but also the structural representation of the driving control conversion equipment of the mechanical spiral push mode traction bed for human body of electric auto-control.The conversion control device of this figure is in manual manually controlled work state.

Fig. 8 is in the sketch map of electric auto-control duty for the conversion control device of Fig. 7.

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Fig. 1, Fig. 2, the represented mechanical spiral push mode of the manual manual control traction bed for human body of Fig. 3, it is equipped with two traction bed boards (3) and several unsteady bed boards (9) on the last plane of bedstead (6), and traction bed board (3) combines by guide rail with bedstead (6).The loam cake of guide rail (4) is fixed on the lower plane both sides of traction bed board (3), and the following seat board (5) of guide rail is fixed on the side bar two ends of bedstead (6), between loam cake (4) and the following seat board (5) bearing is housed.Traction bed board (3) can slide with respect to bedstead (6) in direction that guide rail limits and scope.The bed board (9) that floats is supported on the slideway (10) at side bar middle part of bedstead (6), the pin formula conjunction (7) or the hook-type conjunction (8) of interlock mutually all are equipped with the inner edge that draws bed board (3) in its both sides, when these conjunctions are all thrown off, each piece bed board (9) that floats can slide in slideway (10) upper edge slideway direction, when they combine with adjacent traction bed board (3), or when combining with the slip bed board that combines of traction bed board (3), this part slip bed board just moves with bonded traction bed board again.The outer end of every extension table bed board (3) all is installed with a traction frame (1), and the lower plane middle part of traction bed board (3) is installed with the bearing (19) that is connected with top-pushing mechanism.Be fixedly mounted on mechanical screw type top-pushing mechanism on the bedstead middle cross beam (24) among Fig. 3 by a screw shaft (14), two transmission nuts (12), three bearing blocks (13,23,25), 4 isometric connecting rods (16), two thrust plates (17), two propulsion arms (18), two connected nuts (22) and 8 trundles (15) are formed.Screw thread on the screw shaft (14) is divided into two sections, they are respectively left-handed and dextrorotation, transmission nut (12) with its threaded engagement is all arranged on each section screw thread, these two transmission nuts (12) and a left side, right bearing seat (23,13) position is that centrosymmetry is arranged with middle bearing bracket (25) all, respectively there is a transmission pin-and-hole in the both sides ear of each transmission nut (12), each is hinged by trundle (15) with a pin-and-hole of transmission nut (12) for the pin-and-hole of one end of four connecting rods (16), the pin-and-hole of other end of two connecting rods (16) that is in screw shaft (14) both sides is hinged by trundle (15) and thrust plate (17), every slurcam (17) and a propulsion arm (18) one links together by connected nut (22), the other end of propulsion arm links to each other by the bearing (19) of connected nut (22) below drawing bed board, screw shaft (14) is by three bearing blocks (13,23,25) be installed on the bedstead middle cross beam (24), drive and control an end that is installed in screw shaft (14) with handwheel (11), the position just in time is in the next door at bedstead (6) middle part.Bearing (19) below the middle bearing bracket of spiral top-pushing mechanism (25), propulsion arm (18) and the traction bed board (3) all is in two of bedstead (6) and grows on the symmetrical centre plane on limits.When rotating handwheel (11) by doctor or user oneself, two transmission nuts (12) on the screw shaft (14) can be drawn close to central shaft bearing (25) simultaneously, or separate to both sides.Make two transmission nuts (12) simultaneously when central shaft bearing (25) is drawn close motion when rotating handwheel (11), two propulsion arms (18) will be under the promotion of thrust plate (17), two traction bed boards (1) are promoted motion along two long side directions of bedstead (6) to the two ends of bed, at this moment two with draw traction frame (1) that bed board (3) fixedlys connected and from two ends in bed the user of couching applied pulling force by pillow-jaw type traction belt (2) and foot traction belt (21) and carry out traction work; When handwheel (1) when stopping operating, traction bed for human body is in the duty that keeps traction; When backward rotation handwheel (11) made two transmission nuts (12) simultaneously to the both sides split movement, two traction bed boards (3) were with regard to the center returning movement of while to bedstead (6).Human body has just been removed traction state when pull strength is reduced to zero.

The method that changes tractive manner is: when integrally dragging, make the conjunction (7 between all unsteady bed boards (9) of traction bed for human body, 8) and the conjunction (7 between unsteady bed board (9) and traction bed board (3), 8) all be in disengaged condition, at this moment the bed board of traction bed for human body is in the state that can " freely stretch ", when wanting local the traction, at first determine human body to need the position and his the pairing bed board position of local traction, adjust the order between the unsteady bed board (9) that several width do not wait then, make seam and this position consistency between certain two unsteady bed board, at this moment remove the conjunction (7 that makes these seam both sides, 8) be in outside the disengaged condition, make the conjunction (7 between other unsteady bed board (9), 8) reach the conjunction (7 that floats between bed board (9) and the traction bed board (3), 8) all be in bonding state, at this moment traction bed for human body just is in the local traction state to this position of human body, the corresponding traction belt of auxiliary use just can carry out the part traction at this position to human body; Conjunction (7,8) between all unsteady bed boards (9) and unsteady bed board (9) and traction bed board (3) is when all being in bonding state, perhaps with the unsteady bed board (9) that is connected of traction bed board (3) with bedstead (6) when fixedlying connected, traction bed for human body just is in common state.

Because screw thread itself has self-lock ability during the screw thread transmission, therefore generally do not need to make in addition actuation mechanism, keep the brake lock state if desired, can with rope handwheel be fastened on the side bar of bedstead (6) at all positions from the garden in addition, it can not be rotated.

Manual manual hydraulic pushing formula traction bed for human body is on the basis of the mechanical spiral push mode of manual manual control traction bed for human body shown in Figure 1 among Fig. 4, driving controlling organization with hydraulic pressure top vertebra mechanism and hand-hydraulic replaces mechanical screw type top-pushing mechanism and handwheel to constitute, its hydraulic pushing mechanism is by bearing (27), hydraulic cylinder (28), oil pipe (26) and propulsion arm (18) are formed, and its hand-hydraulic drives controlling organization by hydraulic hand-pump (32), check valve (31), control crank (29), connecting rod (30), oil pipe (26), support (33), oil tank (35) and hand-hydraulic control valve (34) are formed.Two hydraulic cylinders (28) of symmetric arrangement are installed in the both sides of the bearing (27) on the bedstead middle cross beam (24), one end of the piston rod of hydraulic cylinder (28) and propulsion arm (18) is hinged, the bearing (19) of the other end of propulsion arm (18) below drawing bed board (3) is connected, two fluid gateways of hydraulic cylinder (28) are connected with hand-hydraulic control valve (34) by oil pipe (26), the oil-in of hydraulic hand-pump (32) is connected with oil tank (35) with oil pipe (26) by a check valve (31), its oil-out is connected with manual hydraulic control valve (34) with oil pipe (26) by a check valve (31), the spill port of manual hydraulic control valve (34) is connected with oil tank (35) by oil pipe (26), the piston rod of hydraulic hand-pump (32) is hinged with the handle bar middle part of control crank (29) by connecting rod (30), one end of control crank (29) is hinged with the support (33) that is fixed on the bedstead (6), when control crank (29) and manual hydraulic control valve (34) all are in user in the installation site on the bedstead (6) and couch on traction bed for human body, hands easily near and be convenient to place firmly.When the operating position with hand-hydraulic control valve (34) is switched to the position of " towage ", on doctor or user, under shake control crank (29), drive hydraulic hand-pump (32) absorption work fluid from oil tank (35), in pump, be transported in the hand-hydraulic control valve (34) after the pressurization, pass through the distribution of hydraulic control valve (34) then, high-voltage oil liquid is transported to middle two end motions that promote two pistons to bedstead (6) of two hydraulic cylinders (28) by oil pipe (26), also promote simultaneously two traction bed boards (3) to two end motions, at this moment traction bed for human body is in traction stretching duty, lean liquor in the hydraulic cylinder in (28) returns in the oil tank (35) after passing through oil pipe (26) and hand-hydraulic control valve (34); Stop to shake control crank (29), traction bed for human body is in the traction hold mode; Turn-knob when rotation manual hydraulic control valve (34), when making its operating position be switched to the position of " return ", shake control crank (29) again, the piston direction of motion in the hydraulic cylinder (28) is opposite with the above-mentioned direction of motion, and traction bed for human body is in the duty of unloading return.

Fig. 5 is an a kind of electric auto-control machinery spiral push mode traction bed for human body (sketch map), and it is on the basis of the traction bed for human body of Fig. 1, unload handwheel (11) after, load onto that a cover electric driving mechanism, automatic controls and the urgent arrestment mechanism of a cover form.Electric driving mechanism is by motor (46), driving gear (47), driven gear (45), relay (49) and be connected electric wire (39) and form.Automatic controls comprises the pressure transducer (36) of Information Monitoring and input instruction, (pull strength) direction (angle) pick off (37), position (distance) pick off pick offs such as (38), the keyboard (41) of input instruction, hand held controller (56) etc., be used for storage information, analytical calculation, the establishment control sequence also sends the electronic computer (43) and the execution command of instruction, show state, send the various electric switches of alarm signal, turn-knob (42), attaching plug (44), display (40), various instrument (48) and loudspeaker, buzzer (53) etc., emergency braking mechanism comprises emergency brake lever (55), the brake hard on and off switch (54) of motor, the dead bolt (50) of braking lock, gathering sill (52), dead bolt retainer spring and place kick (51) etc.When needing traction work, attaching plug (44) is inserted electrical network obtain electric energy, and control various pick offs (36 by electronic computer (43), 37,38) and various control instrument and switch (42,41,40,48,53) etc. enter readiness for operation, assigning the traction program command by keyboard (41) or hand held controller (56) to computer also starts working by relay (49) actuating motor (46), the rotor of motor (46) drives driving gear (47) and rotates, driving the driven gear (45) of fixedlying connected with screw shaft (14) simultaneously rotates, traction bed for human body just begins traction work like this, when traction bed board (3) setting in motion, by pick off (36,37,38) will be the size of pull strength, the information transmissions such as size of direction and stroke are given electronic computer (43) and various Displaying Meter (48), display screen (40) can in time show the state of distraction procedure, the doctor can be according to these information by keyboard (41) input instruction adjustment in time and control distraction procedure, and user also can be controlled distraction procedure by hand held controller (56) to electronic computer (43) input instruction according to the sensation of oneself; When abnormal conditions appear in distraction procedure, loudspeaker (53) warning of can sounding a buzzer automatically, doctor or user can or rotate the work that electric switch turn-knob (42) stop traction bed for human body immediately by keyboard (41,56).Promptly stop the work of traction bed for human body if desired, doctor or user can spur emergency brake lever (55), dead bolt (50) is stretched in the gear teeth of driven tooth (45) along the head that gathering sill (52) is moved to the left until dead bolt (50), the mechanical movement of traction bed for human body part can be braked and locking immediately like this, because emergency brake lever (55) connects each other with brake hard on and off switch (54), the power supply of at this moment supplying with motor (46) also is cut off simultaneously.After traction bed for human body is by brake hard, under the effect of the retainer spring of fixing latch bolt position and place kick (51), emergency braking condition can not removed voluntarily, only after abnormal conditions are excluded, after doctor or user back into normal operation position to the right with emergency brake lever (55), the head of dead bolt (50) just can withdraw from the between cog of driven gear (45), but and make the power supply of motor be in on-state again, make traction bed for human body return to normal operating conditions.

Electric auto-control hydraulic pushing formula traction bed for human body shown in Figure 6 is to have adopted the hydraulic pushing mechanism among Fig. 4, and the automatic controls among Fig. 5 uses that electric hydaulic driving mechanism and urgent hydraulic brake mechanism form instead.The electric hydaulic driving mechanism is by electric hydraulic pump (58), electric-controlled hydraulic control valve (57), relay (49), oil tank (35) and be connected oil pipe (26) etc. and form, and urgent hydraulic brake mechanism is formed by brake valve valve body (61), spool (60), oil return pipe (59), brake handle (55) with the brake hard on and off switch (54) of brake handle interlock.The work of electric hydraulic pump is subjected to electronic computer (43) and the urgent dual control of hydraulic brake valve (59,60,61,55) simultaneously.On the valve body (61) of urgent hydraulic brake valve oil-feed, fuel-displaced and three holes of oil return are arranged, and have only oil-feed and fuel-displaced two holes on the spool (60), the fuel feed hole of spool (60) is big, remain long logical state with the fuel feed hole of valve body (61), but the oil outlet of spool (61) can only be connected with the oil outlet on the valve body (60).Under normal operation, emergency brake lever (55) and the spool of fixedlying connected with it (60) are in the right-hand member of valve body (61), the conducting of aliging with oil outlet on the valve body (61) of oil outlet on the spool (60), but the spill port on the valve body (61) is blocked sealing by the outer wall of spool (60), brake hard on and off switch (54) is in on-state, at this moment, the work of electric hydraulic pump (58) is controlled by electronic computer (43), from oil tank (35), enter the interior oil duct of spool (60) through the oil-in on the valve body (61) of urgent hydraulic brake valve after absorption work fluid and the pressurization, oil outlet on spool (60) and valve body (61) enters electric-controlled hydraulic control valve (57), and then is assigned in two hydraulic cylinders (28) and removes to promote pistons work.When distraction procedure occurs unusual, in the time of need promptly stopping the work of extension table, can spur emergency brake lever (55) rapidly by doctor or user oneself, make its spool (60) move on to the left end of valve body, at this moment the brake hard on and off switch (54) with urgent system handle (55) interlock can cut off the power supply of electric hydraulic pump (58), force it to stop pump oil, the outer wall of spool (60) can be blocked the oil-out on the valve body (61) on the other hand, oil-in on the spool (60) is communicated with oil-in on the valve body (61) and oil return opening simultaneously, and oil return opening and oil return pipe (59) that the hydraulic oil that electric hydraulic pump (58) is exported directly passes through on the valve body (61) return in the oil tank (35).

Both manually manual controls of Fig. 7 and Fig. 8 indication, but the mechanical spiral push mode traction bed for human body of electric auto-control again, be that the driving controlling organization of the traction bed for human body of manual manual control shown in Figure 1 and electronic automatically controlled traction bed for human body shown in Figure 5 is combined, and the traction bed for human body of working method is controlled in the driving that can freely select it, what Fig. 7 and Fig. 8 were represented is exactly after this two covers driving controlling organization is combined, and controls the apparatus structure sketch map of their working methods conversion.Conversion equipment is made up of handwheel combination (67), shift fork (68), bearing (69), power supply locking switch (7 ()) and the change lever (71) of idler gear (62), idler gear bearing (63), intermediate gear shaft (64), clutch driven plate (65), clutch driving plate (66), band clutch and shift fork cover.Idler gear (62) is fixed on the intermediate gear shaft (64), and intermediate gear shaft (64) is parallel with the axis of driving gear (47) with driven tooth (45).Be installed with shift fork (68) on the intermediate gear shaft (64), the bar portion of an end of intermediate gear shaft (64) and change lever (71) is hinged.Be installed with driven gear (45), clutch driven plate (65) on the screw shaft (14), handwheel combination (67) kink that has shift fork cover and clutch driving plate is on screw shaft (14), and it and screw shaft (14) are slidingly matched.Its position is subjected to shift fork (68) control, and the line lock switch (70) of electronic electric-control system is connected with change lever (71), and change lever (71) is fixedlyed connected with bedstead (6) by bearing (69).

When needs are carried out manual manually controlled work mode, as shown in Figure 7, push change lever (71) to left side, at this moment the line lock switch (70) of controlling motor (46) power supply disconnects, motor can't be worked, meanwhile, the intermediate gear shaft (64) hinged with change lever (71) bar portion is pushed slip left in the hole of bearing (63), driving idler gear (62) moves to left, middle gear (62) and driving gear (47) and driven gear (45) are thrown off, electronic like this electric-control system disconnects fully with top-pushing mechanism aspect machine driving, when center tooth wheel shaft (64) when being moved to the left, the handwheel combination (67) that shift fork (68) promotes to have clutch driving plate moves to left, and combines with clutch driven plate (65) on being fixed on screw shaft (14), and at this moment traction bed for human body just is in the traction duty of manual manual control.

When adopting electric auto-control work side man-hour, shift change lever (71) onto right side, as shown in Figure 8, at this moment handwheel combination (67) moves right and screw shaft (14) breaks away from the transmission contact, idler gear (62) is moved to the left, mesh with driving gear (47) and driven gear (45) simultaneously, the closed energized of line lock switch (70), at this moment traction bed for human body just is in the duty of electric auto-control.

Claims (7)

1, a kind of traction bed for human body, it is by bedstead, bed board, top-pushing mechanism, driving mechanism and controlling organization are formed, its technical characterictic is that the bed board that is contained on the bedstead is made up of two traction bed boards and several unsteady bed boards, their last plane Dou Chu at grade, two traction bed boards are contained in the two ends of bedstead, unsteady bed board is contained in the middle part of bedstead, the outer end of two traction bed boards respectively fixedly mounts a traction frame, their following both sides are connected by the last plane of guide rail with the two ends of bedstead side bar, unsteady bed board is supported on the slideway at bedstead middle part, they can move in slideway upper edge slideway direction, every unsteady bed board can be by both sides conjunction be connected with adjacent traction bed board or unsteady bed board, also can with the side bar secure bond of bedstead, top-pushing mechanism is installed on the middle cross beam of bedstead, its two propulsion arms just in time are on the symmetrical centre plane on bedstead two long limits, the overhanging end of two propulsion arms respectively be fixed on the bearings of two tractions below the bed board and link to each other, driving mechanism is installed in the bottom of bedstead, it can be connected with top-pushing mechanism by machinery or conduit under fluid pressure, controlling organization passes through electric wire, mechanical handle or handwheel are connected with driving mechanism, this traction bed for human body can be manually manual separately, also electric auto-control separately also can possess this two covers driving control device of manual manual control and electric auto-control simultaneously.

2, traction bed for human body according to claim 1, its technical characterictic is that its bedstead is by side bar, crossbeam, guide rail, slideway and footpost are formed, guide rail is contained in planar two ends on the bedstead side bar, seat board is fixed on the side bar of bedstead under it, its loam cake is fixedly linked with the lower plane both sides of traction bed board, between the loam cake of guide rail and the following seat board bearing is housed, interlock and spacing mutually between loam cake and following, make the traction bed board can only be with respect to the bedstead shift position in direction that guide rail limits and scope, and the two can not be separated, slideway is contained in planar middle part on the bedstead side bar, it is supporting unsteady bed board that it can be moved in slideway upper edge slideway direction, but can not move to other direction.

3, traction bed for human body according to claim 1, its technical characterictic is, be installed in two traction bed boards at two ends above the bedstead, their outer end is installed with traction frame, the inboard is provided with the conjunction that can combine with unsteady bed board, following middle part is installed with bearing, and the propulsion arm in the top-pushing mechanism is connected with the traction bed board by this bearing.

4, traction bed for human body according to claim 1, its technical characterictic is mounted in the unsteady bed board at bedstead middle part and can be made up of several the plates that width does not wait, the conjunction that can be connected with adjacent unsteady bed board, traction bed board or bedstead side bar all is equipped with on the both sides of each piece plate, and the position conversion mutually between these unsteady bed boards.

5, traction bed for human body according to claim 1, the top-pushing mechanism that its technical characterictic is mounted on the bedstead middle cross beam can be the top-pushing mechanism of fluid pressure type, it also can be mechanical top-pushing mechanism, the top-pushing mechanism of fluid pressure type is by bearing, the hydraulic cylinder, oil pipe and propulsion arm are formed, two hydraulic cylinder left sides, right symmetric arrangement is installed on the hold-down support of bedstead middle cross beam, the hydraulic cylinder is connected with hydraulic control valve with the hydraulic pump of driving mechanism by oil pipe, one end of propulsion arm and the piston rod of hydraulic cylinder are hinged, the other end is connected with the bearing of traction under the bed board, typical mechanical type top-pushing mechanism is spiral top-pushing mechanism, it is by a screw shaft, two transmission nuts, four connecting rods, two thrust plates, two connecting bolts, three bearing blocks, two propulsion arms and eight trundles are formed, screw thread on the screw shaft is divided into two sections, their thread form is all identical with pitch, but rotation direction is respectively left-handed and dextrorotation, these two sections screw threads by the axle journal of intermediate bearing separately, a transmission nut that is mated all is housed on every section screw thread, this two transmission nuts position and left side on screw shaft, the position of right bearing seat is that centrosymmetry is arranged with the centrage of middle bearing bracket all, respectively there is a transmission pin-and-hole in each transmission nut both sides ear, each is hinged with a pin-and-hole of transmission nut for the pin-and-hole of four connecting rod one ends, the other end pin-and-hole of two connecting rods on screw shaft both sides passes through trundle, and each is hinged with a pin-and-hole on the thrust plate, thrust plate is connected by connecting bolt with an end of propulsion arm, the other end of propulsion arm is connected by connecting bolt with the bearing that is fixed under the traction bed board, screw shaft is installed on the middle cross beam of bedstead by three bearing blocks, and an end of screw shaft is fixed with the driven gear or the handwheel of driving mechanism.

6, traction bed for human body according to claim 1, its technical characterictic is that its driving mechanism is according to used driving force branch, can be manual, also can be electronic, can also be both can manually also can be electronic the combined type driving mechanism, construction features branch according to driving mechanism, can be mechanical, it also can be fluid pressure type, the electrodynamic mechanical type driving mechanism is by motor, driving gear, driven gear, relay be connected electric wire and form, motor is fixedly mounted on the bedstead, it is accepted the electric energy of electrical network by electric wire and accepts the control of controlling organization, the driving gear that is fixedly mounted on the motor rotor shaft is meshed with driven gear on being fixedly mounted on screw shaft, the electric hydraulic driving mechanism is by electric hydraulic pump, the electric-controlled hydraulic control valve, oil tank, oil pipe be connected electric wire and form, electric hydraulic pump, electric-controlled hydraulic control valve and oil tank all are fixedly mounted on the bedstead, perhaps be fixedly mounted on control station below, hydraulic pump is drawn hydraulic oil and pressurization by oil pipe from oil tank, be transported in the hydraulic cylinder of top-pushing mechanism by the electric-controlled hydraulic control valve then and remove to promote pistons work, lean liquor in the hydraulic cylinder returns in the oil tank after by oil pipe and electric-controlled hydraulic control valve, hand-hydraulic formula driving mechanism and its controlling organization are combined with each other, it is by hydraulic hand-pump, check valve, control crank, connecting rod, oil pipe, oil tank, handle bracket and manual hydraulic control valve are formed, the support of fixed handle one end, oil tank and hydraulic hand-pump all are fixed on the bedstead next door, hydraulic control valve is installed in the approaching easily place of operating of staff on the bedstead, or be installed in the extension rod end of control crank stiff end, the piston rod of hydraulic hand-pump is hinged by the bar portion of connecting rod and control crank, when last, under when shaking control crank, hydraulic hand-pump is drawn work fluid by oil pipe and check valve from oil tank, in pump, pass through check valve again after the pressurization, oil pipe, manual hydraulic control valve is transported in the hydraulic cylinder of top-pushing mechanism and removes to promote pistons work, lean liquor in the hydraulic cylinder is back in the oil tank after by oil pipe and manual hydraulic control valve, armstrong's patent formula driving mechanism is the end that the handwheel that drives and control this dual-use function with having directly is fixedly mounted on the screw shaft of top-pushing mechanism, possess simultaneously manually and the combined type driving mechanism of electric functions is the combination of above-mentioned manual actuation mechanism and electric driving mechanism, the conversion between them and being interlocked in the controlling organization realizes.

7, traction bed for human body according to claim 1, its technical characterictic is that its controlling organization can be manually manual controlling organization, it also can be the controlling organization of electric auto-control, can also be both can be manually manual, combined type controlling organization that also can electric auto-control, manually manual controlling organization is that control crank or the handwheel of using in the driving mechanism directly controlled top-pushing mechanism work, or directly rotate hydraulic control valve with hands and control top-pushing mechanism work, the controlling organization of electric auto-control is by various pick offs, controller, actuator, emergency braking mechanism, various demonstrations, alarm device is formed with the electric wire that is connected above-mentioned components and parts, the pressure transducer of survey pull strength size commonly used, survey the direction sensor of pull strength angle, the position sensor of survey hauling distance etc. all is fixedly mounted on the appointed part of bedstead, they and the keyboard of importing instruction usefulness, hand held controllers etc. are connected with electronic computer with programme-control by electric wire, the control instruction that electronic computer sends is transferred to various electric switches by electric wire, relay, various control executing mechanism such as electro-hydraulic control valve and various Displaying Meter, the sound accompaniment loudspeaker, displaying alarms such as alarm buzzer, emergency braking mechanism is made up of mechanical braking lock or hydraulic brake valve and brake lock on and off switch, simple automatic controls also can only be made up of above-mentioned subelement, both can be manually manual, also but the combined type of electric auto-control drives controlling organization except that possessing this two covers driving controlling organization of manual manual control and electric auto-control simultaneously, also has the conversion operating mechanism, mechanically operated conversion operating mechanism is by change lever, have the handwheel combination of clutch, idler gear, intermediate gear shaft is formed with the line lock switch with interlock function, hydraulically powered conversion operating mechanism is by hydraulicdirectional control valve, conversion control crank and the line lock switch composition that links with the conversion operations handle, connecting relation between these elements can guarantee when adopting manual manually controlled work mode, conversion and control mechanism will cut off thoroughly that machinery between top-pushing mechanism and the electric driving mechanism links or hydraulic pressure is got in touch, to cut off the supply of electric power of electric driving mechanism simultaneously, when adopting the electric auto-control working method, can effectively stop manual manual control system to enter duty.

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