CN211356295U - Electric stretcher vehicle - Google Patents

Abstract

The application provides an electric stretcher, at least one group of supporting legs in the front supporting leg and the rear supporting leg are crossed hinged supporting legs or crossed sliding supporting legs or double hinged supporting legs, the front supporting leg and the rear supporting leg are crossed and overlapped or crossed and overlapped up and down, effective storage of the ultrahigh supporting leg is achieved, and the size of the stored ultrahigh supporting leg does not exceed the size of a stretcher body; in addition, the stretcher lathe bed comprises the multilayer, and the bottom one deck is the frame for location landing leg and truckle, middle one deck be horizontal translation bracket, through moving vice and frame lateral sliding connection, the one deck of the top is vertical translation bracket, through moving vice and horizontal translation bracket or with frame longitudinal sliding connection, make electronic stretcher can not only climb higher car chassis to can realize going up and down and the translation operation on the car, accomplish emergency patient and in time inspect or treat on the car.

Description

Electric stretcher vehicle

Technical Field

The application relates to emergency equipment for sick and wounded, in particular to an electric stretcher capable of automatically lifting.

Background

Most of ambulances in the current market are provided with boarding stretchers, one type of the ambulances is a manual boarding stretcher, the manual boarding stretcher is provided with front and rear hinged supporting legs, the front and rear supporting legs can be folded independently, the manual carrying of the stretcher is not needed in the boarding process, and the function of adjusting the height of the stretcher is not needed; another kind of electronic boarding stretcher is more advanced, not only can realize automatic boarding, can also realize altitude mixture control, nevertheless its scissors fork formula telescopic leg structure can't realize the independent shrink of front and back leg, consequently the process of boarding needs with the help of connecing and drawing the slide rail. Considering that the supporting legs do not exceed (or slightly exceed) the overall dimension of the stretcher after being folded, the height of the supporting legs of the boarding stretcher is limited, so that the boarding height is limited, the maximum boarding height is about 700 mm at present, and in addition, the boarding stretcher does not have the functions of electrified lifting and translation in a vehicle, so that vehicle-mounted inspection and treatment operation cannot be realized.

With the continuous progress of medical services, the nation implements the strategy of 'hospital movement and department effect', more and more rescue vehicles, such as large-scale physical examination vehicles, operation vehicles, cerebral apoplexy examination vehicles and the like are gradually popularized, but the vehicles generally need to be modified by a truck chassis because of heavy vehicle-mounted equipment and large operation space, and the higher truck chassis and the more complex rescue operation requirements on the vehicles cause the obstacle that the existing boarding stretcher cannot surmount.

Therefore, how to provide a novel emergency stretcher which can not only climb an ultrahigh truck chassis, but also realize the lifting and translation on the vehicle after the vehicle is on the ground has become a problem to be solved by the technical personnel in the field.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide an electric stretcher vehicle for increasing boarding height and providing more on-board work functions.

To achieve the above and other related objects, the present application provides an electric stretcher comprising: the frame is used for positioning the supporting legs and bearing a patient; the truckle is used for pushing and steering the stretcher; and the front supporting legs and the rear supporting legs are used for connecting the frame with the front and the rear casters, and at least one group of the front and the rear supporting legs is a cross hinged supporting leg or a cross sliding supporting leg or a double hinged supporting leg. The front and rear supporting legs are overlapped in a crossed mode or the upper and lower supporting legs are overlapped in a crossed mode, so that the ultrahigh supporting legs can be effectively stored, and the lifting and the translation on the vehicle can be realized; the independently folded front and rear legs do not need to be connected with a guide rail, so that the folding chair is simple, efficient, low in cost and reliable.

The terms "or," "or," and/or "as used herein are to be construed as being inclusive or meaning any one or any combination. Thus, "A, B or C", "A, B or C" and "A, B and/or C" mean "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ", an exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

Orientation definition: the front and back horizontal direction of the frame is longitudinal, the corresponding size is length, the left and right horizontal direction perpendicular to the longitudinal direction is transverse, the corresponding size is width, the up and down direction perpendicular to the horizontal plane of the frame is vertical, and the corresponding size is height.

Where the orientation of the components is not explicitly defined in the language front-back, up-down, left-right, etc., the components include front, upper, left and/or rear, lower, right components, such as where the legs include front and/or rear legs, and the lower legs include front and/or rear lower legs, where the front legs include a single front leg and/or a combination of front left and front right legs and/or a combination of front upper and front lower legs, etc., the ambiguous orientations are primarily for simplicity of the language, or where the emphasis on the language is not associated with an orientation, or where the orientation of the components is clear to the reader depending on the context of the language front-back.

In some embodiments of the present application, at least one of the front and rear legs is a cross-hinged leg, a top end of the front leg having a lower end provided with a front caster is hinged to a rear portion of the frame and/or a top end of the rear leg having a lower end provided with a rear caster is hinged to a front portion of the frame, a top end of the folding actuator hinged to a lower portion of the front leg and/or a bottom end of the folding actuator hinged to a lower portion of the rear leg is hinged to a middle portion of the frame, the front and rear legs are in a cross shape, the front leg and the rear leg are staggered from left to right, and the front leg folding actuator.

The cross-hinged front leg and rear leg are offset from side to side including but not limited to the following: the inner lateral distance between the left front leg and the right front leg is greater than the outer lateral width of the single or the two rear legs, or the outer lateral width of the single or the two front legs is less than the inner lateral distance between the left rear leg and the right rear leg; the single or two front supporting legs are all positioned at the left side or the right side of the frame, and the single or two rear supporting legs are all positioned at the other side of the frame; the transverse spans of the two front supporting legs and the two rear supporting legs are consistent, the inner side transverse distance is larger than the outer side transverse width of a single supporting leg, and the front supporting leg and the rear supporting leg are integrally staggered left and right relative to each other and are larger than the transverse width of the single supporting leg.

In some embodiments of the present application, at least one of the front and rear legs is a cross sliding leg, the top end of the front leg with front caster wheels at the lower end is positioned on a front leg longitudinal slide way extending backwards under the frame through a front leg slide block and/or the top end of the rear leg with rear caster wheels at the lower end is positioned on a rear leg longitudinal slide way extending forwards under the frame through a rear leg slide block, when the posture of the stretcher changes from high to low, the front leg slide block slides from the middle part to the rear part, the top end of a support rod hinged to the middle part of the front leg is hinged to the front part of the frame and/or the top end of a support rod hinged to the middle part of the rear leg is hinged to the rear part of the frame, the actuator for driving the folding of the legs has various installation forms, preferably, the other end of a linear actuator connected to the front leg slide block is connected to the front part of the frame and/or the, the front supporting legs and the rear supporting legs are staggered left and right, and the folding drivers of the front legs, the folding drivers of the rear legs, the longitudinal slideways of the folding drivers of the front legs and the longitudinal slideways of the folding drivers of the rear legs are staggered left and right and are used for the cross folding of the front supporting legs and the rear supporting legs.

The situations that the front supporting leg and the rear supporting leg are staggered left and right in the cross sliding mode and the situation that the longitudinal slideway of the front leg and the longitudinal slideway of the rear leg are staggered left and right are similar to the situation that the front supporting leg and the rear supporting leg are staggered left and right in the cross hinged mode.

The slide block is positioned on the longitudinal slide way below the frame, the slide way is limited to be separated from the slide way by an upper limiting structure and a lower limiting structure, or the slide way is limited by an upper limiting structure, the slide block is kept not to be separated from the slide way under the action of gravity, the top end of the supporting leg can be directly positioned on the longitudinal slide way below the frame by a pulley, and the pulley is a simplified structure of the slide block.

In some embodiments of the present application, at least one of the front and rear support legs is a double-hinged support leg, the top end of the front lower support leg with the front caster at the lower end thereof is hinged to the lower end of the front upper support leg through a second transverse hinge shaft, and/or the top end of the rear lower support leg with the rear caster at the lower end thereof is hinged to the lower end of the rear upper support leg through a second transverse hinge shaft, the top end of the front upper support leg is hinged to the front portion of the frame and/or the top end of the rear upper support leg through a first transverse hinge shaft, the left-right distance inside the lower support leg is greater than the width outside the upper support leg, and the up-down distance inside the lower support leg is greater than the height of the shape of the upper support leg, so that the upper and.

The shape height of the upper supporting leg refers to the height dimension from the top end of the upper supporting leg to the axis of the second transverse hinge shaft when the upper supporting leg is in a vertical state; the vertical distance in the lower support leg refers to the height from the bottom end of the inner frame of the door frame-shaped lower support leg to the axis of the second transverse hinge shaft when the lower support leg is in a vertical state, and when the bottom end of the inner frame of the door frame-shaped lower support leg is the caster shaft, the vertical distance in the lower support leg is equal to the radius obtained by subtracting the center distance between the caster shaft and the second transverse hinge shaft from the caster shaft.

For convenience of description, in the following, a represents a cross-hinged leg, B represents a cross-sliding leg, and C represents a double-hinged leg, and the "at least one set of the front and rear legs is a cross-hinged leg or a cross-sliding leg or a double-hinged leg" includes but is not limited to the following combinations: A1-A2(1 for front leg and 2 for back leg, the same applies below), A1-B2, A1-C2, B1-B2, B1-C2, C1-B2 and C1-C2.

In some embodiments of the present application, the hinged leg is provided with a torsion spring and/or a compression spring, the torsion spring and/or the compression spring is in a free state or a state with relatively small elasticity when the leg is in an open state, and the elasticity of the torsion spring and/or the compression spring is increased when the leg is folded.

In certain embodiments of the present application, the electric stretcher further comprises: the transverse translation bracket is connected with the frame in a transverse sliding mode through a sliding pair; so as to adapt to the narrow space in the vehicle and translate to the proper position in different stages of transportation and inspection. The longitudinal translation bracket is composed of one section or a front section and a rear section of brackets, each section is hinged through a transverse hinge shaft, and one section of bracket is connected with the frame or the transverse translation bracket in a longitudinal sliding mode through a sliding pair. Longitudinally translating the carriage may accomplish in-vehicle translation of the patient into the examination region. After folding the multistage translation bracket, can not only adjust patient's position, can also reduce the vertical size of electronic stretcher to get into narrow spaces such as elevator.

In some embodiments of the present application, the front part of the longitudinal translation carriage is provided with a head rest divided into three parts, left, middle and right, wherein the left and right flaps are hinged with the central main supporting plate by means of longitudinal hinging shafts. The head support is in a flat plate state when not folded, so that the shovel stretcher is favorably placed, and the ailerons on the two sides are folded up to fix the head of a patient when the cerebral apoplexy is examined.

In certain embodiments of the present application, the electric stretcher further comprises: the vehicle-climbing device comprises a vehicle-climbing chassis, wherein an electromagnetic lock is configured on the vehicle-climbing chassis. The locking of the bicycle is more convenient.

In certain embodiments of the present application, the electric stretcher further comprises: the electric bicycle comprises a boarding chassis, wherein a charging seat is arranged on the boarding chassis, a clamping seat with a full-opening upper end and a half-opening rear end is arranged at the rear end of the charging seat, a floating electric connector is configured on the clamping seat, and the length and width of the clamping seat are in sliding clearance fit with the length and width of the floating electric connector. The charging on the vehicle is kept, and the stretcher vehicle is still allowed to lift and fall in the vehicle.

In certain embodiments of the present application, the electric stretcher further comprises: a sensor mounted on the stretcher and/or the ambulance for detecting the relative position of the stretcher and the ambulance; and the control device is electrically connected with the folding driver, the electromagnetic lock and the sensor and is used for driving the supporting legs to fold and unfold according to the control signal and/or the sensing signal and controlling the electromagnetic lock to lock and release the stretcher. The position sensor includes, but is not limited to, an ultrasonic ranging sensor, an infrared ranging sensor, a touch switch, and the like. The implementation mode is more intelligent, and one-key operation can be realized according to the environment.

At least one group of front and rear supporting legs of the electric stretcher provided by the application are cross hinged supporting legs or cross sliding supporting legs or double hinged supporting legs. The front and back cross overlapping or the up and down cross overlapping are utilized to realize the effective storage of the ultrahigh supporting leg (the size after the storage is close to the size of the stretcher bed). In addition, the stretcher body is composed of a plurality of layers, the frame is arranged at the bottommost layer and used for positioning the supporting legs and the casters, the transverse translation bracket is arranged at the middle layer (if any) and is connected with the frame in a transverse sliding mode through the moving pair, the longitudinal translation bracket is arranged at the topmost layer, and the transverse translation bracket (if any) or the frame is connected with the moving pair in a longitudinal sliding mode through the moving pair, so that the emergency stretcher can climb a higher automobile chassis, can realize lifting and translation operations on the automobile, and can complete timely inspection or treatment of emergency patients on the automobile.

Drawings

Fig. 1 is a schematic view showing the boarding movement of the electric stretcher according to the present application in the first embodiment.

Fig. 2 shows a side view of the electric stretcher of the present application in a first embodiment.

Fig. 3 is a schematic diagram of the floating charging of the electric stretcher according to the present application in the first embodiment.

Fig. 4 is a schematic structural view of an electric stretcher according to the present application in a second embodiment.

Fig. 5 shows a cross-sectional view a-a of the electric stretcher of the present application in a second embodiment.

Fig. 6 is a schematic view showing the boarding movement of the electric stretcher according to the present application in the second embodiment.

Fig. 7 is a schematic diagram of the floating charging of the electric stretcher according to the present application in a second embodiment.

In the figure, 1, a bracket, 2, a frame, 3, a front leg assembly, 5, a rear leg assembly, 4, a middle position caster, 6, a boarding chassis, 7, a stair and 8, an ambulance;

11. the horizontal translation bracket, 12, the longitudinal translation bracket, 13, the head support, 14, the head support aileron and 15, the longitudinal sliding pair;

121. front bracket, 122 front hinge axis, 123 middle bracket, 124 rear hinge axis, 125 rear bracket;

22. high front wheel, 23 high rear wheel, 24 charging plug; 25. a transverse moving pair;

31. front caster, 34, front leg, 35, front leg first hinge shaft, 36, front leg second hinge shaft, 37, front leg first folding actuator, 38, front leg second folding actuator;

341. front upper leg 342, front lower leg 351, front leg first torsion spring 361, front leg second torsion spring;

51. rear caster 52, rear leg pulley 53, rear leg longitudinal slide 54, rear leg 55, rear leg first hinge shaft 56, rear leg second hinge shaft 57, rear leg first folding driver 58, rear leg second folding driver 59, support bar;

541. rear upper support leg, 542 rear lower support leg;

61. a chassis, 62 electromagnetic locks, 63 charging seats; 631. a floating electrical receptacle, 632, a card socket;

71. stair steps, 72, stair rest platforms, 73, corridor end walls, 74, corridor side walls and 75, stair handrails.

Detailed Description

The following description of the embodiments of the present application is provided for illustrative purposes, and other advantages and capabilities of the present application will become apparent to those skilled in the art from the present disclosure. In the following description, reference is made to the accompanying drawings that describe several embodiments of the application. It is to be understood that other embodiments may be utilized and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present disclosure. The following detailed description is not to be taken in a limiting sense, and the scope of embodiments of the present application is defined only by the claims of the issued patent. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Please refer to fig. 1, which is a schematic view illustrating a boarding movement of the electric stretcher according to the first embodiment of the present invention. As shown in the drawings, the present application provides an electric stretcher, the frame 2 is used for positioning the supporting legs and the bearing brackets, and the lower surface of the longitudinal translation bracket 12 is connected with the frame 2 in a longitudinal sliding way through a longitudinal sliding pair 15; the top end of the front leg 34 is hinged to the rear part of the frame 2 through a front leg first hinge shaft 35, and the top end of a front leg first folding driver 37 hinged to the lower part of the front leg 34 is hinged to the middle part of the frame 2; the top end of a support rod 59 with the lower end hinged to the middle part of the rear leg 54 through a rear leg second hinge shaft 56 is hinged to the rear part of the frame 2 (coaxial with the front leg first hinge shaft 35), the top end of the rear leg 54 is positioned on a rear leg longitudinal slide way 53 extending forwards below the frame through a rear leg pulley 52, a rear leg first folding driver 57 is arranged on a wheel shaft of the rear leg pulley 52, and the other end of the rear leg first folding driver 57 is connected with the frame 2. When the stretcher is used for boarding, the high-position front wheel 22 positioned at the front part of the frame 2 firstly contacts the chassis of the ambulance 8 to play an auxiliary supporting role, then the front leg folding driver 37 drives the front leg to fold, when the contact point of the front caster 31 is flush with the high-position front wheel 22, the front half part of the electric stretcher can be pushed into the ambulance 8, then the high-position rear wheel 23 positioned at the middle and rear part of the frame 2 contacts the chassis of the ambulance 8, the contact point of the high-position rear wheel 23 is positioned behind the gravity center of the stretcher, and the support role is played when the leg assembly 5 is folded, so that the whole electric stretcher can be pushed into the ambulance 8 by continuously pushing.

Referring to fig. 2, a side view of the electric stretcher of the present application in a first embodiment is shown. As shown in the figures, the two front legs 34 and the folding drivers 37 thereof are externally arranged, and the inner lateral distance W2 is larger than the lateral width W1 of the two internally arranged rear legs 54, the supporting rod 59, the rear leg longitudinal slide 53 and the like, so that the front legs and the rear legs can be folded in a crossing manner under the action of the drivers, and therefore the requirement of effective low-position storage of ultrahigh legs (capable of climbing higher truck chassis) can be met, and safe transportation of a patient is facilitated.

Please refer to fig. 3, which is a schematic diagram of the electric stretcher according to the present application for floating charging of the vehicle in the first embodiment. As shown in the drawings, the present application provides an electric stretcher, wherein the frame 2 is used for positioning a support leg and a bearing bracket; the lower surface of the longitudinal translation bracket 12 is longitudinally connected with the frame 2 in a sliding way through a longitudinal moving pair 15; the boarding chassis 6 consists of a chassis 61, an electromagnetic lock 62 and a charging seat 63, wherein the chassis 61 can guide the electric stretcher vehicle and has the function of transverse positioning, and when the position sensor senses that the electric stretcher vehicle completely lands in place, the electromagnetic lock 62 fixed on the chassis 61 automatically locks the electric stretcher vehicle under the control of the control device to have the function of longitudinal positioning; the front end of the boarding chassis is also provided with a charging seat 63, the rear side of the charging seat 63 is provided with a cassette 632 with an upper end full opening and a rear end half opening, a floating electric socket 631 is retained in the cassette 632 under the action of gravity, the length and width of the cassette 632 are in sliding clearance fit with the length and width of the floating electric socket 631, namely the length and width of the cassette 632 are slightly larger than the length and width of the floating electric socket 631, the floating electric socket 631 is allowed to slide in and out of the cassette 632, the space position of the floating electric socket 631 can be effectively positioned, when the electric stretcher is completely parked in place, a charging plug 24 at the front end of the frame penetrates through the cassette 632 with the rear end half opening to be inserted into the floating electric socket 631 to start charging, when the electric stretcher is lifted, the charging plug 24 drives the floating electric socket 631 to upwards separate from the cassette 632 with the upper end full opening, when the electric stretcher is lowered, the floating electric socket 631 returns into, the rear semi-open clamp 632 will limit the forward and backward translation of floating electrical receptacle 631, forcing the charging plug to be withdrawn from floating electrical receptacle 631 and de-energized.

Please refer to fig. 4, which is a schematic structural view of the electric stretcher of the present application in a second embodiment, wherein the present application provides an electric stretcher, and the frame 2 is used for positioning the supporting legs and the bearing brackets; the transverse translation bracket 11 is transversely connected with the frame 2 in a sliding manner through a transverse moving pair 25; the longitudinal translation bracket 12 is composed of a head support 13, a front bracket 121, a middle bracket 123 and a rear bracket 125, wherein the rear end of the front bracket 121 is hinged with the front end of the middle bracket 123 through a front hinge shaft 122, the rear end of the middle bracket 123 is hinged with the front end of the rear bracket 125 through a rear hinge shaft 124, the head support 13 is arranged at the front end of the front bracket 121, the lower part of the middle bracket 123 is longitudinally and slidably connected with the transverse translation bracket 11 through a longitudinal moving pair 15, the pitching angle of the front bracket 121 can be adjusted by means of an electric push rod or an air spring, so that the body position of a patient is adjusted, and when the middle bracket 123 moves backwards to enable the rear hinge shaft 124 to exceed the rear end of the frame, the rear bracket 125 can be folded downwards, so that the longitudinal size of the stretcher is; the rear leg assembly 5 is composed of a rear caster 51, a rear lower leg 542 and a rear upper leg 541; the top end of the rear upper support leg 541 is hinged to the rear part of the frame 2 through a rear leg first hinge shaft 55, a rear leg first driver 57 is arranged on the rear leg first hinge shaft 55, the top end of the rear lower support leg 542 is hinged to the lower end of the rear upper support leg 541 through a rear leg second hinge shaft 56, a rear leg second driver 58 is arranged on the rear leg second hinge shaft 56, and the rear leg second driver 58 is fixed inside the rear upper support leg 541; the front leg assembly 3 is composed of a front caster 31, a front lower leg 342 and a front upper leg 341; the top end of the front upper leg 341 is hinged to the front part of the frame 2 through a front leg first hinge shaft 35, a front leg first driver 37 is arranged on the front leg first hinge shaft 35, the top end of the front lower leg 342 is hinged to the lower end of the front upper leg 341 through a front leg second hinge shaft 36, a front leg second driver 38 is arranged on the front leg second hinge shaft 36, and the front leg second driver 38 is fixed inside the front upper leg 341; the double-hinged supporting leg with the independent driver not only can be adjusted in height at will, but also can be adjusted in the wheelbase of the front and rear trundles as required, and is convenient for stable pushing and cardio-pulmonary resuscitation operation.

Please refer to fig. 5, which is a schematic view illustrating a boarding movement of the electric stretcher according to the second embodiment of the present invention. As shown in the figure, the high-position front wheel 22 is arranged at the front part of the frame 2 and is used for firstly contacting the chassis of the ambulance at the front rate of the folding front leg assembly to play a role of auxiliary support; the meso position truckle 4 install in preceding leg subassembly middle part, after preceding leg subassembly is folding alternately, meso position truckle touchdown point height is equal to the touchdown point of high-order front wheel 22, and meso position truckle touchdown point is located the stretcher focus after for lead the contact ambulance chassis before folding back leg subassembly, play the auxiliary stay effect.

Referring to fig. 6, which is a cross-sectional view taken along the line a-a of the electric stretcher of the present invention in the second embodiment, as shown in the drawing, since the left-right distance W2 between the inner sides of the rear lower legs 542 of the double-hinged legs is greater than the width W1 between the outer sides of the rear upper legs 541, the up-down distance H2 between the inner sides of the rear lower legs 542 of the double-hinged legs is greater than the height H1 of the outer shape of the rear upper legs 541, the upper and lower legs can be folded in a crossed manner at an acute angle or completely overlapped at a zero angle along the second transverse hinge axis 56 of the rear legs, and the front legs have a cross-folding structure similar to that of the rear legs, so that the effective low-position storage of the super-; in addition, a torsion spring 551 is arranged on the first rear leg hinging shaft 55, a torsion spring 561 is arranged on the second rear leg hinging shaft 56, when the rear legs are in an opening state, the torsion spring is in a free state or a relatively small torsion state, the front double-hinging legs also have a structure similar to the rear legs and are also provided with the torsion springs, at the moment, the gravity of the patient and the vehicle frame is borne by the upper and lower legs (the driving motor almost does not exert force), when the legs are folded, the elasticity of the torsion springs is increased, the driving motor is helped to share part of the gravity of the patient and the vehicle frame, the power of the driving motor is reduced, and the driving mileage.

Please refer to fig. 7, which is a schematic view of the adjustment movement of the electric stretcher according to the second embodiment of the present invention. As shown, the transverse translation carriage 11 is connected with the carriage 2 transversely and slidingly through a transverse moving pair 25; the lower surface of the longitudinal translation bracket 12 is longitudinally and slidably connected with the transverse translation bracket 11 through a longitudinal moving pair 15, the front end of the longitudinal translation bracket 12 is provided with a head support, the head support ailerons 14 are connected to a main supporting plate 13 of the head support through a longitudinal hinged shaft, the head support ailerons 14 are unfolded into a plane when a patient is carried, so that a shovel stretcher can be conveniently and horizontally placed on the longitudinal translation bracket, and the head support ailerons 14 are folded upwards (the shovel stretcher is withdrawn at the moment) during examination and treatment for fixing the head of the patient and preventing the head of the patient from laterally deviating during the examination; the boarding chassis 6 consists of a chassis 61, an electromagnetic lock 62 and a charging seat 63, wherein the chassis 61 can guide the electric stretcher vehicle and has the function of transverse positioning, and when the position sensor senses that the electric stretcher vehicle completely lands in place, the electromagnetic lock 62 fixed on the chassis 61 automatically locks the electric stretcher vehicle under the control of the control device to have the function of longitudinal positioning; the front end of the boarding chassis is also provided with a charging seat 63, and the technical scheme of the charging seat is the same as that of the first embodiment.

In summary, at least one group of the front and rear supporting legs of the electric stretcher provided by the application is a cross hinged supporting leg or a cross sliding supporting leg or a double hinged supporting leg. The front and back cross overlapping or the up and down cross overlapping are utilized to realize the effective storage of the ultrahigh supporting leg (the size after the storage is close to the size of the stretcher bed). In addition, the stretcher body is composed of a plurality of layers, the frame is arranged at the bottommost layer and used for positioning the supporting legs and the casters, the transverse translation bracket is arranged at the middle layer (if any) and is connected with the frame in a transverse sliding mode through the moving pair, the longitudinal translation bracket is arranged at the topmost layer, and the transverse translation bracket (if any) or the frame is connected with the moving pair in a longitudinal sliding mode through the moving pair, so that the emergency stretcher can climb a higher automobile chassis, can realize lifting and translation operations on the automobile, and can complete timely inspection or treatment of emergency patients on the automobile.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims (11)

1. An electric stretcher, comprising:

the frame is used for positioning the supporting legs and bearing a patient;

the truckle is used for pushing and steering the stretcher; and

the front supporting legs and the rear supporting legs are used for connecting the frame with the front and the rear caster wheels, and at least one group of the front and the rear supporting legs is cross hinged supporting legs or cross sliding supporting legs or double hinged supporting legs.

2. The electric stretcher according to claim 1, wherein at least one of the front and rear legs is a cross-hinged leg, the top end of the front leg having the front caster at the lower end thereof is hinged to the rear portion of the frame and/or the top end of the rear leg having the rear caster at the lower end thereof is hinged to the front portion of the frame, the top end of the folding actuator hinged to the lower portion of the front leg and/or the lower portion of the rear leg is hinged to the middle portion of the frame, the front leg and the rear leg are staggered from side to side, and the folding actuator of the front leg and the folding actuator of the rear leg are.

3. The electric stretcher according to claim 1, wherein at least one of the front and rear support legs is a cross sliding support leg, the top end of the front support leg with the front caster wheels at the lower end is positioned on a longitudinal slide way extending backwards below the frame through a slide block and/or the top end of the rear support leg with the rear caster wheels at the lower end is positioned on a longitudinal slide way extending forwards below the frame through a slide block, the top end of the support rod hinged to the middle part of the front support leg is hinged to the front part of the frame and/or the top end of the support rod hinged to the middle part of the rear support leg is hinged to the rear part of the frame, and the front support leg and.

4. The electric stretcher according to claim 1, wherein at least one of the front and rear legs is a double-hinged leg, the top end of the front lower leg having a front caster at its lower end is hinged to the lower end of the front upper leg through a second transverse hinge shaft and/or the top end of the rear lower leg having a rear caster at its lower end is hinged to the lower end of the rear upper leg through a second transverse hinge shaft, the top end of the front upper leg is hinged to the front portion of the frame and/or the top end of the rear upper leg through a first transverse hinge shaft and is hinged to the rear portion of the frame, the inner side left-right spacing of the lower leg is greater than the outer side width of the upper leg, and the inner top-bottom spacing of the lower leg is.

5. The electric stretcher according to claim 1, wherein the hinged leg is provided with a torsion spring and/or a compression spring, the torsion spring and/or the compression spring is in a free state or a state with relatively small elasticity when the leg is in an open state, and the elasticity of the torsion spring and/or the compression spring is increased when the leg is folded.

6. The electric stretcher according to claim 1, further comprising: the transverse translation bracket is connected with the frame in a transverse sliding mode through a sliding pair; the longitudinal translation bracket is composed of one section or a front section and a rear section of brackets, each section is hinged through a transverse hinge shaft, and one section of bracket is connected with the frame or the transverse translation bracket in a longitudinal sliding mode through a sliding pair.

7. The electric stretcher according to claim 6, wherein the front part of the longitudinal translation bracket is provided with a head support which is divided into a left part, a middle part and a right part, wherein the left and right ailerons are hinged with the middle main supporting plate through a longitudinal hinge shaft.

8. The electric stretcher according to claim 1, further comprising: the vehicle-climbing device comprises a vehicle-climbing chassis, wherein an electromagnetic lock is configured on the vehicle-climbing chassis.

9. The electric stretcher according to claim 1, further comprising: the electric connector device comprises a boarding chassis, wherein a charging seat is arranged on the boarding chassis, a clamping seat with a full opening at the upper end and a half opening at the rear end is arranged at the rear end of the charging seat, a floating electric connector is configured on the clamping seat, and the length and width of the clamping seat are in sliding clearance fit with the length and width of the floating electric connector.

10. The electric stretcher according to claim 2, further comprising:

a sensor mounted on the stretcher and/or the ambulance for detecting the relative position of the stretcher and the ambulance; and

and the control device is electrically connected with the folding driver and the sensor and is used for driving the supporting legs to fold and unfold according to the control signal and/or the sensing signal.

11. The electric stretcher according to claim 8, further comprising:

a sensor mounted on the stretcher and/or the ambulance for detecting the relative position of the stretcher and the ambulance; and

and the control device is electrically connected with the electromagnetic lock and the sensor and is used for controlling the electromagnetic lock to lock and release the stretcher vehicle according to the control signal and/or the sensing signal.

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