CN111847325A

CN111847325A - Lifting mechanism for stretcher

Info

Publication number: CN111847325A
Application number: CN202010633889.2A
Authority: CN
Inventors: 张小光; 刘猛; 彭超智
Original assignee: Chongqing Jinguan Automobile Intelligent Technology Research Institute Co Ltd
Current assignee: Chongqing Jinguan Automobile Intelligent Technology Research Institute Co Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-10-30

Abstract

The invention relates to the technical field of medical aid, in particular to a lifting mechanism for a stretcher, which comprises an upright post, a rotating frame, an upper swing arm, a lower swing arm, a positioning seat and a driving device, the positioning seat is fixedly arranged, the rotating frame is provided with a groove and is hinged with the upright post, one end of the upper swing arm is hinged with the rotating frame, the other end of the upper swing arm is hinged with one end of the lower swing arm, the other end of the lower swing arm is hinged with the positioning seat, the driving device is connected with the upper swing arm, the output shaft of the driving device is fixed with the lower swing arm, the driving device drives the upper swing arm to be opposite to the lower swing arm to rotate, the working strength of soldiers is reduced, the operation is convenient and fast, the phenomenon that two soldiers lift the first-aid cabin on a wounded person is avoided, the wounded person is prevented from being in a state that one end is high and the other end is low, and the wounded person is prevented from being secondarily injured.

Description

Lifting mechanism for stretcher

Technical Field

The invention relates to the technical field of medical aid, in particular to a lifting mechanism for a stretcher.

Background

Ambulances and stretchers are important equipment for medical emergency treatment, convenience is provided for medical aid of personnel, precious rescue time is saved, new requirements are provided for medical emergency equipment along with continuous improvement of public health construction and continuous progress of society, more requirements are particularly provided for convenience in emergency vehicles, emergency medical equipment, pre-hospital emergency management and the like, cross-country ambulances which can adapt to complex terrain conditions are generated at present, for example, a guide rail is additionally arranged at the lower part of a medical bed in an ambulance, the tail of the medical bed can slide out of a carriage, and then the stretcher and the personnel are lifted up to the medical bed, but the length of the medical bed extending out of the carriage is limited, so that the stretcher can be lifted up by medical personnel on the ambulance after receiving the medical personnel; the other type is a lifting stretcher transporting vehicle, a transporting vehicle with a stretcher laid on a personnel table is transported to the vicinity of an ambulance, and then the stretcher is transported into a carriage by virtue of a lifting device, a slideway and the like of the transporting vehicle.

Aiming at the domestic field ambulance, because the stretcher is lifted by two soldiers in a cooperative way, when a wounded is sent to the field ambulance, because the cross beam of the chassis of the field ambulance is higher, when the wounded is lifted by the two soldiers, the upper end and the lower end of the chassis of the field ambulance are higher, the situation that the upper end and the lower end of the chassis of the field ambulance are higher and the other end of the chassis of the field ambulance is lower is caused, the upper medical treatment and the lower medical treatment of the stretcher are difficult to lift manually, the working efficiency is reduced, and when the stretcher is lifted by the soldiers, the wounded are easy to incline, and the phenomenon that the wounded falls out of the stretcher to; the field ambulance is used in rough roads in the field, the transfer trolley is inconvenient to walk on the rough roads, and the mode of transferring the wounded by the transfer trolley is not practical in the field; the bottom of the military stretcher matched with the field emergency ambulance is provided with four support legs, so that the stretcher can adapt to rugged and uneven mountainous areas in the field.

Disclosure of Invention

The invention aims to: aiming at the problems that the cross beam of the chassis of the field emergency ambulance is higher and two soldiers are difficult to lift wounded persons to go up and down a medical cabin in the prior art, the lifting mechanism for the stretcher is provided.

In order to achieve the purpose, the invention adopts the technical scheme that:

The utility model provides a lifting mechanism for stretcher, includes stand, swivel mount, goes up the swing arm, positioning seat and drive arrangement down, the positioning seat is fixed to be set up, be provided with the recess on the swivel mount, the swivel mount with the stand is articulated, go up swing arm one end with the swivel mount is articulated, go up the swing arm other end with swing arm one end is articulated down, the swing arm other end down with the positioning seat is articulated, drive arrangement's poor motion week with it connects to go up the swing arm, drive arrangement with the swing arm is fixed down, the drive arrangement drive it is relative to go up the swing arm down the swing arm rotates.

As a preferable scheme of the invention, the driving device comprises a speed reducer and a stepping motor, the stepping motor is connected with the speed reducer, connecting pieces are fixed on the speed reducer and the stepping motor, the connecting pieces are fixed with the lower swing arm, two output shafts are arranged on the speed reducer, the output shafts of the speed reducer are respectively fixed with the upper swing arm, the stepping motor, the speed reducer and the lower swing arm are fixed by the connecting pieces, the stepping motor drives the speed reducer to rotate, the output shaft of the speed reducer rotates along with the output shaft, so that the upper swing arm matched with the output shaft rotates, the upper swing arm drives the rotating frame to rotate in the rotating process, so that the rotating frame can be unfolded, two rod pieces of the stretcher with the wounded are placed in the grooves, the stretcher can be quickly put into the emergency ambulance by pushing the stretcher, the process that the first-aid personnel lift the wounded on and off the ambulance is avoided, and the wounded on, and the working strength of emergency personnel is reduced; after transporting wounded to the emergency cabin, with step motor reversal, and then drive the speed reducer reversal for can draw in the swivel mount in, convenient and fast.

As the preferable scheme of the invention, two upright columns are arranged, and the end part of the rotating frame is hinged with the upper ends of the two upright columns, so that the rotating frame can be stably arranged on the upright columns, the stability of the upright column structure is increased, and the bearing capacity of the upright columns is increased.

As a preferable scheme of the present invention, the rotating frame includes a first rotating frame and a second rotating frame, the first rotating frame is hinged to the second rotating frame, a stopping mechanism is disposed at a hinge of the first rotating frame and the second rotating frame, the first rotating frame is hinged to the upright, the upper swing arm is hinged to the first rotating frame, when the rotating frame is not used, the first rotating frame and the second rotating frame can be folded, so as to avoid occupying too much space, and when the rotating frame is used, the second rotating frame and the first rotating frame are unfolded, so that the use is convenient.

As a preferable scheme of the present invention, the stop mechanism is a transverse plate, the transverse plates are respectively disposed on the first rotating frame and the second rotating frame, the two transverse plates are connected by a hinge, and when the first rotating frame and the second rotating frame are horizontally unfolded at 180 °, the two transverse plates abut against each other, so as to prevent the second rotating frame and the first rotating frame from continuously rotating relatively.

As a preferable scheme of the invention, the first rotating frame is provided with a lock pin, the lock pin fixes the second rotating frame, when the lifting mechanism is not used, the first rotating frame and the second rotating frame are folded, and the first rotating frame and the second rotating frame are fixed through the lock pin, so that the second rotating frame is prevented from shaking and unfolding, and damage is avoided.

As a preferable scheme of the invention, the upper swing arm is provided with a concave part, the end part of the output shaft of the speed reducer is provided with a convex part matched with the concave part, and the concave part is a non-circular groove, so that the output shaft of the speed reducer can drive the upper swing arm to move in the rotating process, and the rotating frame is unfolded and folded.

As a preferable scheme of the invention, the second rotating frame is provided with a handle, the handle is fixed with the second rotating frame, the second rotating frame can be conveniently rotated along the first rotating frame by holding the handle by hand, and the working comfort of emergency personnel is improved.

As a preferable scheme of the invention, the upright post is fixed with a mounting plate, the mounting plate is provided with a mounting hole, and the upright post is fixed behind the emergency ambulance cabin of the field emergency ambulance by a bolt through the mounting hole on the mounting plate, so that the upright post can provide stable support for the rotating frame.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the upright post and the positioning seat are fixed at the rear part of the first-aid cabin of the field emergency ambulance, two soldiers lift wounded persons in the field to the front of the field emergency ambulance, the medical care personnel starts the driving device, the driving device drives the upper swing arm to rotate, so that the rotating frame can be turned upwards, the soldiers close to the first-aid cabin can put the legs at the bottom of the military stretcher into the grooves, the legs at the bottom of the military stretcher can be put into the grooves, the soldier at the other end of the stretcher still lifts the stretcher to keep the stretcher horizontal as much as possible, the driving device stops running when the rotating frame rotates to be horizontal, the soldier at the other end of the stretcher pushes the stretcher to put the legs at the bottom of the military stretcher into the grooves of the rotating frame, the stretcher can be quickly conveyed into the first-aid cabin by continuously pushing the stretcher, the working strength of the soldiers is reduced, the operation is convenient and fast, the phenomenon that the wounded persons need to lift the first-aid cabin is avoided, the wounded is prevented from being injured secondarily.

Drawings

FIG. 1 is a schematic expanded view of the present invention;

FIG. 2 is a perspective view taken along the line A in FIG. 1;

FIG. 3 is a perspective view taken along the line B in FIG. 1;

FIG. 4 is a schematic drawing of the present invention in a collapsed configuration;

FIG. 5 is a schematic view of the connection structure of the upright post, the rotating frame, the upper swing arm and the lower swing arm;

FIG. 6 is a developed view of the present invention mounted on a vehicle body;

fig. 7 is a schematic structural view of a military stretcher;

the labels in the figure are: 1-upright post, 2-rotating frame, 21-first rotating frame, 22-second rotating frame, 23-transverse plate, 24-hinge, 3-upper swing arm, 4-lower swing arm, 5-positioning seat, 61-speed reducer, 62-stepping motor, 63-output shaft, 7-groove, 8-lock pin, 9-handle, 10-mounting plate, 11-mounting hole, 12-connecting piece, 13-stretcher bracket, 14-vehicle floor, 15-carriage, 16-stretcher and 17-support leg.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in fig. 1-5, a lifting mechanism for stretcher comprises a vertical column 1, a rotating frame 2, an upper swing arm 3, a lower swing arm 4, a positioning seat 5 and a driving device, the positioning seat 5 is fixedly arranged, a groove 7 is arranged on the rotating frame 2, the rotating frame 2 is hinged with the upright post 1, one end of the upper swing arm 3 is hinged with the rotating frame 2, the other end of the upper swing arm 3 is hinged with one end of the lower swing arm 4, the other end of the lower swing arm 4 is hinged with the positioning seat 5, the driving device is connected with the upper swing arm 3, the output shaft of the driving device is fixed with the lower swing arm 4, the driving device drives the upper swing arm 3 to rotate relative to the lower swing arm 4, in the embodiment, the stand 1 and the positioning seat 5 are fixed at the rear of an emergency cabin of the field emergency ambulance, so that the stretcher can be conveniently conveyed up and down, and the upper swing arm 3 and the lower swing arm 4 are respectively provided with 2.

As shown in fig. 1, the driving device includes a speed reducer 61 and a stepping motor 62, the stepping motor 62 is connected to the speed reducer 61, a connecting member 12 is fixed to the speed reducer 61 and the stepping motor 62, the connecting member 12 is fixed to the lower swing arm 4, two output shafts 63 are provided on the speed reducer 61, the output shafts of the speed reducer 61 are respectively fixed to the upper swing arm 3, as shown in fig. 2, the speed reducer 61, the stepping motor 62 and the lower swing arm 4 are fixed together by the connecting member 2, and the positioning seat 5 is fixed in the emergency cabin, so that the speed reducer 61 can drive the upper swing arm 3 to rotate, and further drive the rotating frame 2 to rotate.

As shown in fig. 5, when the driving device is connected to the upper swing arm 3 and fixed to the lower swing arm 4, the driving device drives the upper swing arm 3 to rotate, the upper swing arm 3 drives the rotating frame 2 to rotate along with the upper swing arm, so that the rotating frame 2 can be unfolded horizontally, and the lower swing arm 4 rotates along with the rotating frame 2, so as to provide support for the upper swing arm 4 and the rotating frame 2.

In this embodiment, two upright columns 1 are provided, the end portion of the rotating frame 2 is hinged to the upper ends of the two upright columns 1, and in order to ensure that the supporting strength of the upright columns 1 on the rotating frame 2 is sufficient, 3 or 4 equal upright columns 1 can be provided to enhance the supporting capability of the upright columns 1; the rotating frame 2 comprises a first rotating frame 21 and a second rotating frame 22, the first rotating frame 21 is hinged to the second rotating frame 22, a stopping mechanism is arranged at the hinged position of the first rotating frame 21 and the second rotating frame 22, the end part of the first rotating frame 21 is hinged to the upright post 1, the upper swing arm 3 is hinged to the first rotating frame 21, in order to save more space, the rotating frame 2 can be divided into 3 or 4 equal rotating frames, all the rotating frames 2 are hinged to each other, so that the rotating frames can be folded mutually, and the excessive occupied space is avoided; the stop mechanism is a transverse plate 23, the transverse plates 23 are respectively arranged on the first rotating frame 21 and the second rotating frame 22, the two transverse plates 23 are connected through a hinge 24, in order to lock the first rotating frame 21 and the second rotating frame 22 after being unfolded horizontally, a lock pin can be arranged between the first rotating frame 21 and the second rotating frame 22, and the first rotating frame 21 and the second rotating frame 22 can be fixed through the lock pin after the plane is unfolded by 180 degrees; the first rotating frame 21 is provided with a lock pin 8, the lock pin 8 fixes the second rotating frame 22, and of course, in order to save cost, the lock pin 8 can be replaced by a conventional rope, and the first rotating frame 21 and the second rotating frame 22 are fixed in a rope winding and fixing manner.

In this embodiment, the upper swing arm 3 is provided with a concave portion, the end of the output shaft 63 of the speed reducer 61 is provided with a convex portion matching with the concave portion, the concave portion is a non-circular groove, and the matching of the concave portion and the convex portion is mainly to avoid the output shaft 63 and the upper swing arm 3 from relatively rotating, and the output shaft 63 and the upper swing arm 3 can be directly fixed to avoid their relative movement.

In this embodiment, the second rotating frame 22 is provided with a handle 9, and the handle 9 is fixed to the second rotating frame 22; the emergency rescue system is characterized in that a mounting plate 10 is fixed on the upright post 1, a mounting hole 11 is formed in the mounting plate 10, and the upright post 1 is fixed in the emergency rescue capsule through the mounting hole 11 by a bolt.

The specific working process of the application is as follows: before the emergency stretcher is used and unfolded, as shown in figure 4, when the emergency stretcher needs to be used, the upright 1 and the positioning seat 5 need to be fixed in an emergency cabin, when a patient needs to be rescued, the lock pin 8 is firstly opened, the second rotating frame 22 in figure 4 is rotated to separate the second rotating frame 22 from the first rotating frame 21, the included angle between the second rotating frame 22 and the first rotating frame 21 is in a 90-degree state, when two soldiers put wounded on a stretcher and lift the wounded on the emergency cabin, the support leg below the stretcher for the military close to the emergency cabin is put in the groove 7 of the second rotating frame 22, the other soldier keeps the military stretcher horizontal as much as possible, the stepping motor 62 is started, the speed reducer 61 is driven by the stepping motor 62 to rotate, the speed reducer 61 drives the upper swing arm 3 to rotate, the upper swing arm 3 drives the first rotating frame 21 to rotate in the rotating process, when the first rotating frame 21 rotates to the second rotating frame 22 to be 180 degrees, the first rotating frame 21 and the second rotating frame 22 are stopped by the stopping mechanism, no longer rotate with each other, so that the second rotating frame 22 is driven to rotate during the continuous rotation of the first rotating frame 21, when the first rotating frame 21 rotates to be horizontal, a soldier keeping the stretcher horizontal all the time puts the feet at the bottom of the stretcher into the grooves 7, in the process, the soldier who lifts the stretcher can push the stretcher to slide in the groove, the stretcher can enter the first rotating frame 21 and continuously push the stretcher into the first aid cabin, and after the wounded is conveyed to the first aid cabin, the rotating frame 2 can be folded by reversing the stepping motor 62, the second rotating frame 22 and the first rotating frame 21 can be folded manually, the lifting mechanism has the advantages that the lifting mechanism can be quickly folded and can convey the wounded to a nearby medical mechanism, the action of a soldier for lifting the wounded to get on and off the first-aid cabin is avoided, and the phenomenon that the wounded get on and off the first-aid cabin is difficult due to the fact that a chassis crossbeam of a field emergency ambulance is too high is avoided.

As shown in fig. 6 and 7, two soldiers lift the wounded person to the back door of the emergency ambulance through the stretcher 16, open the second revolving frame 22 and rotate 90 °, the front soldier puts the legs 17 at the bottom of the stretcher 16 in the grooves 7 of the second revolving frame 22, the stepping motor 62 is powered to drive the speed reducer 62 to rotate, and further drive the first revolving frame 21 to rotate, the first revolving frame 21 drives the second revolving frame 22 to lift during rotation, when the first revolving frame 21 and the second revolving frame 22 rotate to be horizontal, the rear soldier also keeps the stretcher 16 horizontal and pushes the stretcher 16 to move in the grooves 7, the stretcher support 13 adjacent to the first revolving frame 21 is arranged inside the carriage 15, the grooves are also arranged on the stretcher support 13, the stretcher 16 is pushed along the grooves 7 of the revolving frame 2, the legs 17 of the stretcher 16 slide in the grooves 7 and slide into the grooves of the stretcher support 13, and the stretcher 16 is integrally pushed onto the stretcher support 13, so that the process of transporting the stretcher 16 onto the emergency ambulance can be completed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a lifting mechanism for stretcher, its characterized in that, includes stand (1), swivel mount (2), goes up swing arm (3), swing arm (4), positioning seat (5) and drive arrangement down, positioning seat (5) are fixed to be set up, be provided with recess (7) on swivel mount (2), swivel mount (2) with stand (1) is articulated, go up swing arm (3) one end with swivel mount (2) are articulated, go up the swing arm (3) other end with swing arm (4) one end is articulated down, swing arm (4) other end with positioning seat (5) are articulated down, drive arrangement's output shaft with go up swing arm (3) and connect, drive arrangement with swing arm (4) are fixed down, the drive arrangement drive go up swing arm (3) relatively swing arm (4) rotate down.

2. The lifting mechanism for a stretcher according to claim 1, characterized in that the driving device comprises a speed reducer (61) and a stepping motor (62), the stepping motor (62) is connected with the speed reducer (61), a connecting piece (12) is fixed on the speed reducer (61) and the stepping motor (62), the connecting piece (12) is fixed with the lower swing arm (4), two output shafts (63) are arranged on the speed reducer (61), and the output shafts (63) of the speed reducer (61) are respectively fixed with the upper swing arm (3).

3. The lifting mechanism for a stretcher according to claim 1 characterized in that said uprights (1) are provided in two, the ends of said rotating frame (2) being hinged with the upper ends of the two uprights (1).

4. The lifting mechanism for a stretcher according to claim 1 characterized in that the rotating frame (2) comprises a first rotating frame (21) and a second rotating frame (22), the first rotating frame (21) and the second rotating frame (22) are hinged, a stop mechanism is arranged at the hinge of the first rotating frame (21) and the second rotating frame (22), the first rotating frame (21) is hinged with the upright (1), and the upper swing arm (3) is hinged with the first rotating frame (21).

5. The lifting mechanism for a stretcher according to claim 4 characterized in that the stop mechanism is a cross plate (23), the cross plates (23) are respectively provided on the first rotating frame (21) and the second rotating frame (22), the two cross plates (23) are connected by a hinge (24).

6. The lifting mechanism for a stretcher according to claim 4 characterized in that a locking pin (8) is provided on the first rotating frame (21), said locking pin (8) fixing the second rotating frame (22).

7. The lifting mechanism for a stretcher according to claim 2 characterized in that the upper swing arm (3) is provided with a recess and the end of the output shaft (63) of the reducer (61) is provided with a protrusion matching the recess.

8. The lifting mechanism for a stretcher according to claim 4 characterized in that a handle (9) is provided on the second rotating frame (22), said handle (9) being fixed to the second rotating frame (22).

9. The lifting mechanism for a stretcher according to claim 1 characterized in that a mounting plate (10) is fixed on the upright (1), the mounting plate (10) being provided with mounting holes (11).