JPH0531140A - Vibration-proof transferring apparatus for stretcher in ambulance - Google Patents

Abstract

PURPOSE:To transfer easily and by only a person a stretcher with a caster to an ambulance at a higher position than a floor surface. CONSTITUTION:Two arms 3 and 4 are combined in a V-shape on a base loaded on a vehicle and a pair of a compression spring 7, and a hydraulic cylinder 8 provided on the arms 3 and 4 can absorb vibration and support an elevating and lowering frame 2. A stretcher loaded in the ambulance is supported and hooked by means of this elevating and lowering frame 2. A transfer stage 15 which is slidable along the longer direction on the elevating and lowering frame 2, is provided. The length of sliding of this transfer stage 15 is determined in such a way that the front end of the transfer stage 15 is projected from the rear end of the ambulance and comes to the lower position than the lower face of the stage of the stretcher being outside of the vehicle to transfer surely the stretcher being outside of the vehicle to the transfer stage 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for easily transferring a stretcher mounted on an ambulance.

[0002]

2. Description of the Related Art A bed mounted on an ambulance is designed to prevent vibration of the vehicle and to be lifted and lowered.
There is one disclosed in Japanese Patent Publication 87020. This supports a stretcher pedestal via a pantograph with an X-shaped link on the board, absorbs vibrations transmitted from the vehicle by using a shock absorber and a spring installed between the board and the pedestal, and absorbs the shock absorber. By the action of, the stretcher on the pedestal can be moved up and down. Further, there is one disclosed in JP-A-52-130188, in which a bed mounted on an ambulance is locked by a pedestal on the ambulance side and easily transferred.

[0003]

A device for supporting a bed with a shock absorber and a pantograph can absorb vibrations from the vehicle, but a bed (stretcher) in which the patient is lying on the pedestal on the ambulance side. It is difficult for a rescuer or other person to lift this bed and place it on the pedestal to transfer it to the pedestal. Further, the one disclosed in JP-A No. 52-130188 has the same drawback.

An object of the present invention is to make it possible to easily transfer a stretcher with casters to an elevating frame of an anti-vibration transfer device on the side of an ambulance located at a position higher than a floor surface and by one person.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and comprises a base mounted on a vehicle, a combination of two arms in a V-shape, and a pair of arms. A device for supporting a lifting frame by absorbing vibrations with a compression spring and a hydraulic cylinder, and supporting and locking a stretcher mounted in an ambulance with the lifting frame, in the longitudinal direction of the lifting frame. Along with a transfer table that can be slid along
Make sure that the slide length of this transfer stand is such that the tip of the transfer stand protrudes from the rear end of the ambulance and is located below the bottom surface of the base of the stretcher outside the car to ensure that the stretcher outside the car is transferred to the transfer stand. The gist is what has become possible.

[0006]

[Function] Two arms swinging on a base placed in an ambulance are formed in a V shape so that an elevating frame can be raised and lowered, and a lower portion of a stretcher mounted in the ambulance is provided by the elevating frame. A mechanism including a pair of a compression spring and a hydraulic cylinder for supporting and locking by lifting and absorbing vibrations in each arm is provided. Furthermore, since the transfer table is provided slidably on the lifting frame, the tip of the transfer table is projected from the opening of the rear end of the ambulance by the inclination of the lifting frame and the sliding of the transfer table, and the floor of the ambulance is also provided. By setting it to a lower position, it is possible to easily transfer the stretcher that has been moved on the ground simply by pushing it on the inclined and protruding transfer table.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An anti-vibration transfer device for a bed (stretcher) of the present invention will be described below with reference to the illustrated embodiments. In the figure, V is an anti-vibration transfer device that supports a stretcher that is mounted so as not to transmit the vibration of the ambulance to a stretcher that can be installed in an ambulance such as a one-box car or a station wagon. The bed with casters is provided on the lower part of the bed having a required size, and the legs with casters are foldable as required, which has a general-purpose structure.

As shown in FIGS. 1 to 3, the external appearance of the anti-vibration transfer device V is a base 1 fixed at a predetermined position of an ambulance.
And an elevating frame 2 for supporting a stretcher arranged on the base 1, and the base 1 and the elevating frame 2
The two arms 3 and 4 and the arms 3 and 4 which form a V-shape connecting the two and the arms 3 and 4 are oscillated by changing the angle of the V-shape around the support shaft 6 on the base at the lower end as a fulcrum and absorbing the vibration. The hydraulic cylinder 8 and the compression spring 7 for each arm 3,
It is provided in 4. The base ends of the two arms 3 and 4 are attached to the one shaft 6 which is axially supported so as to cross the center of the base 1 by the bearings 5 and 5 arranged on both sides of the center of the base 1 through the bearings. The arms are swingably supported in opposite directions with the shaft 6 serving as a fulcrum so that they are V-shaped, and the tips of the pair of arms 3, 4 are V-shaped obliquely upward in mutually opposite directions. Make it project to extend to.

A compression spring 7 is arranged between the arm 3 and the base 1 on the side surface of the intermediate portion of the arm 3, and a hydraulic cylinder 8 is similarly arranged on the opposite side surface of the arm 3 as a pair. The arm 3 is provided so that the action of the compression spring 7 and the action of the hydraulic cylinder 8 repel each other or act in the same direction. Similarly, on the other arm 4, a compression spring 7 and a hydraulic cylinder 8 are also arranged on the side surface of the central part of the arm so as to repel each other or act in the same direction, but two arms 3, 4 forming a V shape.
The hydraulic cylinder and the compression spring are arranged symmetrically with respect to each other, that is, as shown in FIG. Therefore, with respect to the load applied to the tips of the two V-shaped arms 3 and 4,
At the same time, it acts on the compression spring or the hydraulic cylinder so that the two arms 3 and 4 simultaneously swing in the same direction with the shaft 6 as a fulcrum when the hydraulic cylinder is operated.

Both ends of the compression spring 7 and the hydraulic cylinder 8 are mounted so as to project through the arms 3 and 4 so that they are supported at a predetermined position between the arms and the base even if the arms 3 and 4 swing. It is supported by a shaft 9 and a bracket 7h provided on the side of the base 1 so as to be opposed to the mounting shaft 9. The compression spring 7 is attached to a bracket 7a supported by a mounting shaft 9 and a bracket 7b supported by a bracket 7h, and spring holders 7c and 7d.
And a guide rod 7e protruding from the spring receiver 7c.
Is slidably fitted in a guide cylinder 7g provided on the other spring bearing 7d, and the guide rod 7e and the guide cylinder 7g
The coil spring 7 is provided between the spring supports 7c and 7d facing each other on the outer periphery of the
f is arranged so as to receive this spring pressure.
A hydraulic cylinder 8 paired with a compression spring has its base end side supported by a bracket 8a protruding from the base 1, and a multi-end cylinder rod 8b supported by the mounting shaft 9.

The brackets 7h and 8a on the side of the base 1 for supporting the compression spring 7 and the hydraulic cylinder 8 are provided on the movable bracket body 10 so as to project therefrom.
0 is also provided with a bracket 10a, and the rod 1 of the cylinder 11 for moving the bracket is attached to the bracket 10a.
1a is pivotally attached.

The movable bracket body 10 is movably supported by a guide rail 12 arranged on the base 1.
Cylinder 11 supported by bracket 13 on base 1
This movable bracket body 10 is moved along the guide rail 12 by retracting the rod 11a of
The support positions of the compression spring and the hydraulic cylinder 8 are moved and adjusted.

The movable bracket body 10 is provided on each of the arms 3 and 4, and the supporting positions of the hydraulic cylinder 8 and the compression spring 7 provided in pairs on each of the arms 3 and 4 are independently adjusted as desired. Yes, each arm 3,
The supporting positions of the hydraulic cylinders and the compression springs forming the four pairs are made different from each other. That is, both movable bracket bodies 10
By varying the amount of movement from the fixed position, the angle of each arm with respect to the base is varied so that the elevating frame 2 supported on the arms is inclined in a desired direction and angle from the horizontal state.

The elevating frame 2 has a trapezoidal shape formed to have a size suitable for supporting the stretcher S, has guide rails G, G on its lower surface, and a shaft 13 is provided between the guide rails facing each other. The guide rollers R, R provided at the ends of the shaft 13 are supported by the guide rail G, respectively, and the shaft 13 is locked to the tips of the arms 3 and 4, that is, the shaft 13 penetrates the tip of the arms. Support me. As a result, when the arms 3 and 4 swing, even if the tip positions of the arms move in an arc shape with the length of the arms 3 and 4 as a radius around the shaft 6, the guide rollers are moved along the guide rails. As a result, the elevating frame 2 is smoothly moved up and down by the tilting movement of the arm.

With respect to the relationship between the guide rail G and the guide roller R, even if the elevating frame 2 moves up and down smoothly, the elevating frame 2 moves in the front-back direction (longitudinal direction) only by the distance along which the guide roller moves within the allowable range. Direction) will move freely. In order to keep the movement of the lifting frame within the allowable range, one link is bridged between one of the arms and the lifting frame. One end of the link 14 is pivotally supported by the lifting frame at a position above the vertical line of the shaft 6, and the other end of the link 14 is pivotally supported by a part of the arm. As a result, when the raising and lowering frame 2 moves up and down by the swinging (inclining movement) of the arms 3 and 4, the raising and lowering frame 2 is restricted by the link 14 and moves up and down on the same vertical line, in the longitudinal direction of the frame. It is possible to prevent more than the allowed movement.

A transfer table 15 is provided on the lift table frame 2 so as to be slidable in the longitudinal direction. When installed on the front end of the elevating frame 2, that is, on both sides of the front end on the rear end opening side when installed in an ambulance vehicle and on both sides at positions slightly closer to the front end from the center in the longitudinal direction of the elevating frame, the guide rollers 16,
16 are rotatably projected, and these four guide rollers 1
Two guide rails 17, 17 are provided on the lower surface of the transfer table so as to be placed on the guide rails 6, 16 and to be guided and moved, and guide rails 18, 18 parallel to each other inside the respective guide rails 17. Are provided on both sides in the longitudinal direction of the elevating frame 2, and guide rollers 19, 19 provided on the lower surface of the rear end side of the transfer table are fitted and supported in the guide rails 18, 18.

The transfer table 15 has its tip bent slightly downward so that it is slanted on the lower surface of the cradle of the stretcher that has been moved on the ground, that is, the stretcher cradle is slid. A stopper device 20 is provided so that the transfer table can be easily transferred by being lifted up on the mounting table, and the transfer table does not move unintentionally at a fixed position and when sliding.

The stopper device 20 is provided with a stopper pin 20c at a rear end of an operating rod 20a arranged beside the transfer table via a link 20b so that the stopper pin 20c can be retracted and protruded by a spring 20d attached to the stopper pin 20c. At this time, the transfer table is fitted into the stopper holes 20H, 20H formed at the fixed position of the elevating frame and the sliding position to prevent the transfer table from moving unintentionally. When the operating rod is pulled, the stopper pin is disengaged from the stopper hole 20H via the link 20b so as to be movable. As a result, the transfer table can be kept in a stopped state when the vehicle is traveling and when the stretcher is transferred or unloaded.

In the vibration isolator constructed as described above, when raising and lowering the raising and lowering frame in a normal horizontal state, the hydraulic cylinders 8 of both arms 3 and 4 are simultaneously extended or retracted by equal amounts of their rods. To do. In order to absorb the vibration at the stop position of the lifting frame, the lifting frame is brought into a floating state by opening the supply port of each hydraulic cylinder.

When the stretcher is tilted, the movable bracket body 10 supporting the hydraulic cylinder of one desired arm and the compression spring is moved by operating the cylinder 11. As a result, the angles of depression and elevation of both arms 3 and 4 become different, and the elevating frame tilts. At this time, the tilt direction and angle of the elevating frame are determined by which of the left and right movable bracket bodies is moved and the amount of movement. In this state, the ports of both hydraulic cylinders 8 are opened to make them floating.

When the stretcher is placed, the arms 3 are raised and the hydraulic cylinders are respectively operated so as to incline the arms 4, thereby tilting the lift table 2 on the arms so that the rear end side thereof becomes lower. Then, when the operating rod 20a is pulled and the stopper device 20 is removed, the transfer table 15 on the lifting table slides and projects from the opening at the rear end of the vehicle, and the transfer table tip position is slightly below the stretcher table. Be in position. The stopper pin is fitted into the stopper hole and locked at the position where the transfer table is slanted and slid. By pushing the stretcher onto the transfer table in this state, the legs under the stretcher are automatically folded, and the stretcher is transferred by sliding on the transfer table with the transfer rollers at the bottom of the stretcher. When the robot is transferred to the table and reaches a fixed position, the elevating table is leveled and the transfer table is pushed in and locked by the stopper device at the fixed position. The vehicle is operated in this manner, and when the stretcher is unloaded, the operation opposite to that at the time of transfer may be performed.

[0022]

According to the present invention, the two V-shaped arms are independently lifted to support the elevating frame, and a stopper device is provided on the elevating frame.
Since the transfer table is provided slidably with the guide rollers and guide rails, the stretcher is automatically tilted from the state on the ground and pushed into the transfer table side protruding to the rear end of the vehicle to automatically Since it is transferred, there is an advantage that a single worker can easily get on and off the stretcher.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an anti-vibration transfer device for a stretcher in an emergency vehicle according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a plan view with the lifting frame removed.

FIG. 4 is a side view of the same.

FIG. 5 is an explanatory diagram showing a tilted state of a lifting frame.

FIG. 6 is an explanatory diagram when transferring to a stretcher.

[Explanation of symbols]

 V anti-vibration transfer device 1 base 2 lifting frame 3 arm 4 arm 6 axis 7 compression spring 8 hydraulic cylinder 10 movable bracket 11 hydraulic cylinder 12 guide rail 15 transfer table 16 guide roller 17 guide rail 18 guide rail 20 stopper device

Claims (1)

Claims: 1. A base mounted on a vehicle, in which two arms are combined in a V-shape, and vibrations can be absorbed by a pair of compression springs and hydraulic cylinders provided on the arms. In the device for supporting the elevating frame and supporting and locking the stretcher mounted in the ambulance with the elevating frame, a transfer table is provided on the elevating frame so as to be slidable along its longitudinal direction. , Make sure that the slide length of this transfer stand is so that the tip of the transfer stand protrudes from the rear end of the ambulance and is below the bottom surface of the base of the stretcher outside the car, and the stretcher outside the car is securely transferred to the transfer stand. Anti-vibration transfer device for stretchers in ambulances characterized by being able to transfer.