CN109223360B

CN109223360B - Medical nursing sickbed capable of being lifted in linkage manner and inclining in multiple directions

Info

Publication number: CN109223360B
Application number: CN201810817278.6A
Authority: CN
Inventors: 曹拂晓; 王丹进; 陈洁; 朱显武
Original assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Current assignee: Second Affiliated Hospital and Yuying Childrens Hospital of Wenzhou Medical University
Priority date: 2018-07-18
Filing date: 2018-07-18
Publication date: 2020-07-28
Anticipated expiration: 2038-07-18
Also published as: CN109223360A

Abstract

The invention provides a structure capable of realizing lifting, left-right inclination, left-right movement and lateral inclination of a sickbed in a linkage manner, each part can be matched and arranged according to a certain time sequence and can be independently driven, and in order to realize the reliability of the position adjustment of the sickbed, the sickbed is driven by a cam mechanism which has higher mechanical stability and stronger interference resistance compared with pure electric control. The linkage of each position adjusting module of the sickbed is realized through the arrangement of the contour line of the cam chart and the time sequence matching of each cam. In a first aspect of the invention, a medical care bed is essentially composed of five parts: the bed comprises a base, a first driving mechanism arranged on the base, a middle seat arranged above the first driving mechanism, a second driving mechanism arranged on the middle seat, and a tiltable bed board driven by the second driving mechanism.

Description

Medical nursing sickbed capable of being lifted in linkage manner and inclining in multiple directions

Technical Field

The invention relates to a medical nursing sickbed, in particular to a medical nursing sickbed which can be lifted in a linkage manner and can incline in multiple directions.

Background

In the prior art, publication No. CN201263760U discloses a hospital bed using a deformable tripod to realize overall lifting and front-back tilting of a bed body, which mainly comprises an underframe, a lifting rotating shaft, a lifting tripod rotating arm, a tilting tripod supporting rod, a tilting tripod, a bed body tilting rotating shaft, a bed body, a sliding groove, a lifting push rod and a tilting push rod. The lifting mechanism is characterized in that the integral lifting and the front-back inclination of the bed body can be realized by using an independent mechanism respectively. The lifting push rod is pushed, and the lifting tripod drives the bed body to integrally ascend or descend; the invention changes the structure that the prior bed body is supported by two cantilevers, overcomes the defect that the bed body is driven to ascend or descend by the ascending or descending of the two cantilevers together or the height difference between the two cantilevers is used, realizes the front and back inclination of the bed body, and provides technical structure support for developing a multifunctional sickbed;

the invention with the publication number of CN205612655A discloses a medical bed and a lifting and inclining mechanism thereof, which comprises a base (10), a first lifting mechanism (20) and a second lifting mechanism (30). The first lifting mechanism has a first support end (22) positioned at the base, and a first drive end (24) capable of linear movement relative to the first support end, the first drive end being capable of being hinged to the bed (80) by a first hinge axis. The second lifting mechanism is provided with a second supporting end (32) positioned on the base and a second driving end (34) capable of making linear motion relative to the second supporting end, the second driving end can be hinged to the bed body through a second hinged shaft and can slide relative to the bed body, the second hinged shaft (342) is parallel to the first hinged shaft (242), and the sliding direction of the bed body relative to the second driving end is perpendicular to the second hinged shaft;

the two structures of the invention have inaccurate control precision, can not incline laterally, have no linkage function between each part, and can not realize the efficient adjustment of the position of the patient on the sickbed.

For the arrangement of lateral inclination, the utility model No. CN2838584Y discloses an electric patient transfer trolley, which is characterized in that an electric lifting mechanism is connected on a walking frame and is connected with a trolley face with an inclined plane through a translational trolley face frame, and an electric translational mechanism and an electric side-turning mechanism are connected on a lifting trolley frame of the electric lifting mechanism and are both connected with the trolley face. The patient transfer trolley can be electrically lifted, translated and laterally turned, so that the trolley surface can be lifted at will at the height of 500 plus 900mm and can be laterally turned at will between 1-30 degrees. The side-turning structure is controlled by the electric push rod, the supporting plate is of a cantilever structure, the stress and the stability are poor, and the side-turning of a patient cannot be stably controlled and the position of the patient cannot be well adjusted by the lifting module.

Therefore, the lifting, left-right inclination, left-right movement and lateral inclination of the sickbed can be realized in a linkage manner, all parts can be arranged according to a certain time sequence in a matched manner and can be independently driven, and in order to realize the reliability of the position adjustment of the sickbed, the sickbed is driven by the cam mechanism which is controlled by pure electric power and has higher mechanical stability and stronger interference resistance. The linkage of each position adjusting module of the sickbed is realized through the arrangement of the contour line of the cam chart and the time sequence matching of each cam.

Disclosure of Invention

The invention aims to provide a structure capable of realizing lifting, left-right inclination, left-right movement and lateral inclination of a sickbed in a linkage manner, each part can be matched and arranged according to a certain time sequence and can be independently driven, and in order to realize the reliability of the position adjustment of the sickbed, a cam mechanism which has higher mechanical stability and stronger interference resistance than pure electric control is adopted to drive the position of the sickbed. The linkage of each position adjusting module of the sickbed is realized through the arrangement of the contour line of the cam chart and the time sequence matching of each cam.

In a first aspect of the invention, a medical care bed is essentially composed of five parts: the bed comprises a base 1, a first driving mechanism arranged on the base, a middle seat 11 arranged above the first driving mechanism, a second driving mechanism arranged on the middle seat 11, and a tiltable bed board A driven by the second driving mechanism.

The first driving mechanism drives the middle seat 11 to drive the bed board a to lift, incline left and right and move left and right. The second driving mechanism realizes the front and back inclination of the bed plate A.

In the second aspect of the invention, a base 1 is provided with a transverse wall plate 2 for fixedly supporting a first driving mechanism, the transverse wall plate 2 is provided with two rotating shafts which are arranged in parallel, two first cams 21 and two second cams 22 are respectively arranged on the two rotating shafts, the first cams 21 are arranged on the same shaft, the second cams 22 are also arranged on the same shaft, a first motor 3 drives the rotating shafts to drive the two first cams 21 to rotate, a second motor 4 drives the rotating shafts to drive the two second cams 22 to rotate, the base 1 is also provided with four lifting rod fixing seats 5, the four lifting rod fixing seats 5 are four, lifting rods 10 are hinged on the four lifting rod fixing seats, the lifting rod fixing seats 10 are 4, the four lifting rod fixing seats 5 are distributed at four corners on the base 1 to form four intersection points of a rectangle, the lifting rod 10 positioned at the left side is crossed with the lifting rod 10 positioned at the right side, and in order to prevent the left lifting rod 10 from interfering with the right lifting rod 10, the thickness of a part of the lifting rod 10 is thinned to form a thinned part 7, see fig. 3, and the thinned part of the left lifting rod 10 and the thinned part of the right lifting rod 10 are arranged to face each other so as to form a mutual dislocation and form a structure capable of relative movement, and the first driving mechanism comprises the lifting rod fixing seat 5, the lifting rod 10 and the first cam mechanism.

The lifting and the left-right inclination of the bed plate A are realized through the synchronous rotation and the independent rotation of the first cam and the second cam.

In the third aspect of the present invention, two first cams 21 are mounted on a rotating shaft driven by a motor, and cam profile surfaces are matched with a roller 33 mounted on a left cam follower lever 32, so as to drive the left cam follower lever 32 to swing through cam rotation, wherein the left cam follower lever 32 is hinged on the lifting rod 10, and the left cam follower lever 32 is connected with the lifting rod 10 through a compression spring 9 with a large elastic coefficient, so that the left cam follower lever 32 has a small swing relative to the lifting rod 10, plays a role in shock absorption, and plays a role in preventing the cams from being worn. Likewise, the right side, in which the right side cam follower lever 32 is hinged on the lifting rod 10, is connected with the lifting rod 10 through the compression spring 9 with a large elastic coefficient, so that the right side cam follower lever 32 has a small swing relative to the lifting rod 10, plays a role in damping and prevents the cam from being worn. In addition, dampers 8 are respectively arranged between the lifting rod 10 on the left side and the lifting rod 10 on the right side and the base 1, the dampers 8 can bear the pressure of a part of sickbed, the pressure of the cam surface can be reduced, the damping coefficient of the dampers 8 is set so that the roller 33 does not depart from the cam, and the cam surface can bear moderate pressure.

In order to prevent the cam mechanism from being locked due to the cam surface bearing a large pressure, a damper 8 is provided for bearing a part of the weight of the middle seat and the bed plate a, and a compression spring 9 with a large rigidity coefficient is provided to prevent the roller 33 from rigidly impacting the cam surface.

In the fourth aspect of the present invention, when the first cam and the second cam operate within the cam lift range and the left-right position inclination needs to be achieved, the first cam 21 on one side is kept to stop rotating, the second cam 22 on the other side continues to rotate, so as to drive the right lifting rod 10 to swing, the left support shaft 15 is driven to slide in the through groove by the swing of the right lifting rod 10, so as to drive the left middle seat 11 to be lifted, at this time, the telescopic rod of the left driving cylinder 14 follows up, and the telescopic rod of the right driving cylinder 17 is fixed, so as to achieve the clockwise inclination of the bed board.

Similarly, the second cam 22 on one side stops rotating, and the first cam 21 on the other side continues rotating, so as to drive the left lifting rod 10 to swing, and the swing of the left lifting rod 10 drives the right support shaft 16 to slide in the through groove, so as to drive the right middle seat 11 to be lifted, at this time, the right telescopic rod of the driving cylinder 17 is driven to follow, the left telescopic rod of the driving cylinder 14 is fixed, and therefore, the counterclockwise inclination of the bed board is realized.

When the left-right position translation is required to be realized, the first cam and the second cam stop rotating, the telescopic rods of the

driving cylinders

14 and 17 are matched to move to realize the left-right movement of the middle seat 11, when the left-right movement is required, the telescopic rods of the driving cylinders 14 are extended, and the telescopic rods of the driving cylinders 17 are shortened; when the telescopic rod needs to move rightwards, the telescopic rod of the driving air cylinder 14 is shortened, and the telescopic rod of the driving air cylinder 17 is extended.

The left and right inclination of the bed plate is realized through the asynchronous rotation of the cam, and the left and right movement of the middle seat and the bed plate is realized through the

driving cylinders

14 and 17.

In the fifth aspect of the present invention, during operation, the front rotating shaft 19 and the rear rotating shaft 24 rotate synchronously, when rotating clockwise, the third cam 18 is in a lift range, and the fourth cam 23 is in a lowering range, so as to drive one end of the bed board a close to the observation side to be lifted up, and the end of the bed board a far from the observation side to be lowered down, when rotating counterclockwise, the third cam 18 is in a lowering range, and the fourth cam 23 is in a lift range, so as to drive one end of the bed board a close to the observation side to be lowered, and the end of the bed board a far from the observation side to be lifted up.

The front and back positions of the bed plate are inclined by the lift and the descending of two different cams which rotate synchronously.

Drawings

Fig. 1 is an explanatory view of the overall structure of a medical care bed of the present invention.

Fig. 2 is an explanatory view of a lateral tilting structure of a medical care bed.

Fig. 3 is an explanatory diagram of a lifting structure, a front-back tilting structure and a front-back moving structure of a medical nursing bed.

Fig. 4 is an explanatory view of a cam mechanism of a lateral tilting structure of a medical care bed.

Fig. 5 is an explanatory view of a cam driving mechanism of a lifting structure of a hospital bed for medical care.

Detailed Description

The present invention will be described in detail below based on preferred embodiments shown in the drawings.

Fig. 1 is an overall structure of a medical care bed of the present invention, which is mainly composed of five parts: the bed comprises a base 1, a first driving mechanism arranged on the base, a middle seat 11 arranged above the first driving mechanism, a second driving mechanism arranged on the middle seat 11, and a tiltable bed board A driven by the second driving mechanism.

The rollers are arranged below the base 1, so that the sickbed can be moved conveniently. The base 1 is provided with a transverse wall plate 2 for fixedly supporting a first driving mechanism, the transverse wall plate 2 is provided with two rotating shafts which are arranged in parallel, the two rotating shafts are respectively provided with two first cams 21 and two second cams 22, the first cams 21 are provided with two on the same shaft, the second cams 22 are also provided with two on the same shaft, a first motor 3 drives the rotating shafts to drive the two first cams 21 to rotate, a second motor 4 drives the rotating shafts to drive the two second cams 22 to rotate, the base 1 is also provided with four lifting rod fixing seats 5, the four lifting rod fixing seats 5 are four, lifting rods 10 are hinged on the four lifting rod fixing seats, the lifting rod fixing seats 10 are 4, the lifting rod fixing seats 5 are distributed at four corners on the base 1 to form four intersection points of a rectangle, the lifting rod 10 positioned at the left side is arranged to intersect with the lifting rod 10 positioned at the right side, and in order to prevent the lifting rod 10 at the left, the thickness of a part of the lifting rod 10 is thinned to form a thin part 7, see fig. 3, and the thinned part of the lifting rod 10 on the left side and the thinned part of the lifting rod 10 on the right side are arranged to face each other so as to form a mutual dislocation and form a structure capable of relative movement, and the first driving mechanism comprises a lifting rod fixing seat 5, the lifting rod 10 and a first cam mechanism.

Referring to fig. 5, describing the structure of the first cam mechanism in detail, two first cams 21 are mounted on a rotating shaft driven by a motor, and cam profile surfaces are engaged with rollers 33 mounted on a left cam follower lever 32 to drive the left cam follower lever 32 to swing through cam rotation, wherein the left cam follower lever 32 is hinged on the lifting rod 10, and the left cam follower lever 32 is connected with the lifting rod 10 through a compression spring 9 with a large elastic coefficient, so that the left cam follower lever 32 swings relatively small with respect to the lifting rod 10, thereby achieving a shock absorption function and preventing the cams from being worn. Likewise, the right side, in which the right side cam follower lever 32 is hinged on the lifting rod 10, is connected with the lifting rod 10 through the compression spring 9 with a large elastic coefficient, so that the right side cam follower lever 32 has a small swing relative to the lifting rod 10, plays a role in damping and prevents the cam from being worn. In addition, dampers 8 are respectively arranged between the lifting rod 10 on the left side and the lifting rod 10 on the right side and the base 1, the dampers 8 can bear the pressure of a part of sickbed, the pressure of the cam surface can be reduced, the damping coefficient of the dampers 8 is set so that the roller 33 does not depart from the cam, and the cam surface can bear moderate pressure.

Continuing to explain the second driving mechanism in detail with reference to fig. 1, the middle seat 11 is a shell-shaped structure, the front and rear sides of which are provided with through slots, a left support shaft 15 and a right support shaft 16 are arranged in the through slots, the left support shaft 15 and the right support shaft 16 can slide in the through slots, the axial direction of the left support shaft 15 and the right support shaft 16 is perpendicular to the front and rear sides, the front and rear through slots respectively provided on the front and rear sides are respectively provided with two

driving cylinders

14, 17, one end of the left driving cylinder 14 is arranged at the left end of the through slot, one end of the right driving cylinder 17 is arranged at the right end of the through slot, the other end of the left driving cylinder 14 is connected with the left support shaft 15, the other end of the right driving cylinder 17 is connected with the right support shaft 16, further referring to fig. 3, the left support shaft 15 passes through the, similarly, the right support shaft 16 passes through the circular through-hole of the upper end portion of the right front-rear parallel lifter 10, and the right support shaft 16 is horizontally supported with its axis distributed front-rear.

Under the condition of the above-mentioned setting, first cam mechanism drive lifter 10 swings around lifter fixing base 5, crisscross lifter 10 drives middle seat 11 and rises and descend and can realize controlling the slope, when first cam 21 rotates with second cam 22 is synchronous, lifter 10 swings in step, thereby drive bed board A vertical lift, at the in-process of bed board A vertical lift, left branch back shaft 15 and right branch back shaft 16 slide in logical groove, in order to prevent about removing of middle seat 11, drive actuating cylinder 14 with two, 17 and left branch back shaft 15 and the linkage of right branch back shaft 16, and guarantee through controlling means that two lift rod lengths that drive actuating cylinder equal.

Under the condition that the first cam and the second cam work in the cam lift range,

when the left and right positions are required to be inclined, the first cam 21 on one side stops rotating, the second cam 22 on the other side continues rotating, so that the lifting rod 10 on the right side is driven to swing, the left supporting shaft 15 is driven to slide in the through groove through the swinging of the lifting rod 10 on the right side, the middle seat 11 on the left side is driven to be lifted up, the telescopic rod of the driving air cylinder 14 on the left side is driven to follow up, the telescopic rod of the driving air cylinder 17 on the right side is fixed, and therefore the clockwise inclination of the bed board is achieved.

driving cylinders

Referring to fig. 2 and 4, a front and back tilt driving structure of a bed board a is specifically described, a support wall board for rotatably mounting a front rotating shaft 19 and a back rotating shaft 24 is arranged at the left and right ends of a middle seat 11, the front rotating shaft 19 and the back rotating shaft 24 can be arranged on the

support wall boards

25, 26 and 27, the front rotating shaft 19 is driven by a third motor 12, the back rotating shaft 24 is driven by a fourth motor 13, a third cam 18 and a fourth cam 23 are respectively arranged at the middle positions of the front rotating shaft 19 and the back rotating shaft 24, the lift and the descending range of the third cam 18 and the fourth cam 23 are opposite, referring to fig. 4, the bed board a is rotatably arranged on the middle seat 11 through a bed board rotating shaft 30, the cross section of the bed board a is an inverted isosceles trapezoid, arc-

shaped protrusions

28 and 29 are respectively arranged on the waist planes at the two sides of the bed board a, the arc-shaped protrusion 28 is matched with the third cam 18, a long through groove is arranged on the upper surface of the middle seat 11 at a position corresponding to the third and fourth cams, and the long through groove is used for accommodating the third and fourth cams.

When the lifting type bed board A is in operation, the front rotating shaft 19 and the rear rotating shaft 24 rotate synchronously, when the lifting type bed board A rotates clockwise, the third cam 18 is in a lifting range, the fourth cam 23 is in a descending range, so that one end, close to the observation side, of the bed board A is lifted, the end, far away from the observation side, of the bed board A is driven to be lifted, when the lifting type bed board A rotates anticlockwise, the third cam 18 is in the descending range, the fourth cam 23 is in the lifting range, the end, close to the observation side, of the bed board A is driven to be lowered.

The following is based on a method of using above-mentioned medical nursing bed, first cam 21, second cam 22 synchronous revolution,

drive cylinder

14, 17 telescopic link synchronous extension for bed board A vertically rises, first cam keeps motionless, second cam 22 continues the rotation, drive lifter 10 clockwise rotation, drive cylinder 14 telescopic link continuous extension, drive cylinder 17 telescopic link length and keep unchangeable, the middle seat left side is lifted, bed board A one side is lifted, synchronous clockwise rotation third motor 12, fourth motor 13, third cam 18 is the lift, fourth cam 23 is for descending the journey, bed board A inclines to keeping away from the observer's direction.

The use method of the medical nursing bed is that the third motor 12 and the fourth motor 13 are synchronously rotated anticlockwise, the third cam 18 is used for descending, the fourth cam 23 is used for lifting, the bed board A is restored to the horizontal state, the second cam 22 rotates reversely to drive the lifting rod 10 to rotate anticlockwise, the telescopic rod of the driving cylinder 14 is contracted, the middle seat is restored to the horizontal state, the first cam 21 and the second cam 22 synchronously rotate reversely to drive the telescopic rods of the

driving cylinders

14 and 17 to contract synchronously, and the bed board A is enabled to descend vertically.

Claims

1. A medical nursing sickbed capable of lifting and inclining in multiple directions in a linkage manner mainly comprises: base (1), install first actuating mechanism on the base, install middle seat (11) in first actuating mechanism top and install second actuating mechanism on middle seat (11) and by tiltable bed board (A) of second actuating mechanism driven, its characterized in that: first actuating mechanism, second actuating mechanism are cam mechanism, cam mechanism drives two sets of lifter (10) motions of cross distribution who articulates on the base, the pivot is installed to every group lifter one end, pivot sliding connection is on middle seat (11), be provided with two sets of cylinders on middle seat (11), wherein a set of cylinder one end is fixed on middle seat (11), the other end is fixed in the pivot of one side, a set of cylinder one end is fixed in middle seat (11) in addition, the other end is fixed in the pivot of opposite side, install in middle seat (11) top bed board (A), bed board (A) is driven by a pair of cam mechanism cooperation, install on base (1) and be used for the fixed stay horizontal wallboard (2) of first actuating mechanism, two parallel arrangement's pivot is installed to horizontal wallboard (2), two install respectively in the pivot two first cam (21), Two second cams (22), two first cams (21) are arranged on the same shaft, two second cams (22) are also arranged on the same shaft, the rotating shaft is driven by the first motor (3) to drive the two first cams (21) to rotate, and the rotating shaft is driven by the second motor (4) to drive the two second cams (22) to rotate.

2. The medical nursing sickbed with linked lifting and multidirectional inclination according to claim 1, wherein four lifting rod fixing seats (5) are further mounted on the base (1), the lifting rods (10) are hinged to the four lifting rod fixing seats, and the number of the lifting rods (10) is 4.

3. The medical nursing sickbed with linkage lifting and multidirectional inclination according to claim 2, wherein the lifting rod fixing seats (5) are distributed at four corners on the base (1) to form four intersection points of a rectangle, the lifting rod (10) at the left side is arranged to intersect with the lifting rod (10) at the right side, and in order to prevent the lifting rod (10) at the left side from interfering with the lifting rod (10) at the right side, the thickness of one part of the lifting rods (10) is thinned to form a thinned part (7).

4. A linked lifting multidirectional inclination medical care sickbed according to claim 3, wherein the thinned part of the left lifting rod (10) and the thinned part of the right lifting rod (10) are arranged in a facing manner so as to form mutual dislocation and form a structure capable of relative movement.

5. A linked lifting multidirectional inclination medical care sickbed according to claim 4, further comprising a roller (33), wherein two first cams (21) are mounted on a rotating shaft driven by a motor, the cam profile surface is matched with the roller (33) mounted on a left cam driven rod (32), wherein the left cam driven rod (32) is hinged on the lifting rod (10), and the left cam driven rod (32) is connected with the lifting rod (10) through a compression spring (9) with a larger elastic coefficient.

6. A medical nursing sickbed with linkage lifting and multidirectional inclination according to claim 5, wherein the right cam follower lever (32) is hinged on the lifting rod (10), the right cam follower lever (32) is connected with the lifting rod (10) through a compression spring (9) with a larger elastic coefficient, dampers (8) are respectively arranged between the lifting rods (10) on the left side and the right side and the base (1), the dampers (8) can bear part of the pressure of the sickbed, the pressure of the cam surface can be reduced, and the damping coefficient of the dampers (8) is set to enable the rollers (33) not to be separated from the cam and enable the cam surface to bear moderate pressure.

7. A method for using a medical nursing bed, which adopts the medical nursing bed with linkage lifting and multidirectional inclination of any one of claims 1 to 6, comprises the following steps,

1) the first cam (21) and the second cam (22) synchronously rotate to drive the telescopic rods of the cylinders (14) and (17) to synchronously extend, so that the bed board (A) vertically rises;

2) the first cam is kept still, the second cam (22) continues to rotate to drive the lifting rod (10) to rotate clockwise, the telescopic rod of the driving cylinder (14) continues to extend, the length of the telescopic rod of the driving cylinder (17) is kept unchanged, the left side of the middle seat is lifted, and one side of the bed plate (A) is lifted;

3) the third motor (12) and the fourth motor (13) are synchronously rotated clockwise, the third cam (18) is used for lifting, the fourth cam (23) is used for descending, and the bed board (A) inclines towards the direction far away from the observer.

8. The method of claim 7, further comprising the steps of:

4) synchronously rotating a third motor (12) and a fourth motor (13) anticlockwise, wherein a third cam (18) is in a descending stroke, a fourth cam (23) is in a lifting stroke, and the bed plate (A) is restored to a horizontal state;

5) the second cam (22) rotates reversely to drive the lifting rod (10) to rotate anticlockwise, the telescopic rod of the driving cylinder (14) contracts, and the middle seat returns to the horizontal state;

6) the first cam (21) and the second cam (22) synchronously rotate in opposite directions, and the telescopic rods of the driving cylinders (14 and 17) synchronously contract, so that the bed board (A) vertically descends.