Electric wheel stretcher

Abstract

The utility model relates to an electric wheel stretcher, which belongs to the field of medical instruments and comprises a frame main body and a base which are distributed up and down, rollers are arranged on the base, and two lifting mechanisms are arranged between the frame main body and the base and are arranged front and back; the lifting mechanism comprises two lifting assemblies, and the two lifting assemblies are arranged front and back; the lifting assembly comprises an electric push rod, an air spring, a first connecting rod and a second connecting rod, the middle end of the first connecting rod is hinged to the middle end of the second connecting rod, the first connecting rod and the second connecting rod form an X shape, the top end of the first connecting rod is hinged to the frame body, and the top end of the second connecting rod is hinged to the frame body. The electric push rod is used for replacing an oil cylinder, oil leakage risks are avoided, the electric push rod is suitable for severe environments, the lifting reliability of the frame body is improved, in addition, the air spring is arranged, the frame body is prevented from falling off when the electric push rod is damaged, and safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an electric stretcher vehicle and belongs to the field of medical instruments. BACKGROUND

[0002] When the wounded is injured, he needs to be sent to an ambulance by a stretcher so as to be treated in time, and along with the development of medical cause, people's requirement for the stretcher is higher and higher. The stretcher not only needs to transport the wounded to the ambulance quickly and conveniently, but also needs to ensure that the wounded will not suffer from great vibration during the transportation and avoid greater pain of the wounded.

[0003] The Chinese invention patent with the publication number CN106859866A discloses an electric stretcher vehicle for first aid, which comprises a vehicle frame body, a base arranged below the vehicle frame body, a lifting device arranged between the base and the vehicle frame body, an outer extension frame arranged above the vehicle frame body and capable of sliding forward and backward on the vehicle frame body and being connected with the vehicle frame body all the time, a lower locking device and a lower limiting device arranged between the vehicle frame body and the outer extension frame, an ambulance stretcher arranged above the outer extension frame and capable of sliding forward and backward on the outer extension frame and being connected with the outer extension frame all the time, an upper locking device and an upper limiting device arranged between the ambulance stretcher and the outer extension frame, and support wheels arranged on the left and right sides of the ambulance stretcher, and a controller arranged on the vehicle frame body and capable of controlling the lifting device. The above-mentioned electric stretcher vehicle for first aid can enter the vehicle compartment stably, safely and labor-savingly. However, in the prior art, the driving source for driving the vehicle frame body to lift is an oil cylinder, and the oil cylinder has the risk of oil leakage after long-term use, which not only affects the lifting reliability of the vehicle frame body, but also pollutes the environment, and moreover, when the oil cylinder works in a harsh environment such as a cold region, the viscosity of the oil in the oil cylinder increases, which causes the movement of the oil cylinder to be blocked.

[0004] Therefore, it is necessary to have an electric stretcher vehicle to improve the lifting reliability of the vehicle frame body. SUMMARY

[0005] The utility model wants to solve the technical problem of: in order to overcome the insufficient of prior art, provide a kind of electric stretcher vehicle to improve the lifting reliability of vehicle frame body.

[0006] The utility model solves the technical scheme that the above-mentioned problem is adopted: a kind of electric stretcher vehicle, including the vehicle frame body and base distributed in up and down, the base is provided with gyro wheel, two lifting mechanisms are provided between the vehicle frame body and base, two lifting mechanisms are arranged in front and back;

[0007] The lifting mechanism includes two lifting assemblies, and the two lifting assemblies are arranged in front and back.

[0008] The lifting assembly comprises an electric push rod, an air spring, a first connecting rod and a second connecting rod, the middle end of the first connecting rod and the middle end of the second connecting rod are hinged, the first connecting rod and the second connecting rod form an X shape, the top end of the first connecting rod is hinged with a frame body, the top end of the second connecting rod is slidingly connected with the frame body along a left-right direction, the bottom end of the first connecting rod is slidingly connected with a base along the left-right direction, the bottom end of the second connecting rod is hinged with the base, the sliding connection direction of the second connecting rod and the frame body, the electric push rod and the air spring are both arranged obliquely, the cylinder end of the electric push rod is hinged with the first connecting rod, the piston end of the electric push rod is hinged with the top end of the second connecting rod, the shell end of the air spring is hinged with the first connecting rod, and the piston end of the air spring is hinged with the second connecting rod.

[0009] As preferred, the frame body is provided with a support wheel.

[0010] As preferred, the first connecting shaft, the second connecting shaft, the third connecting shaft and the fourth connecting shaft are all parallel to the front-rear direction, the first connecting shaft sequentially passes through the top ends of the two first connecting rods, the second connecting shaft sequentially passes through the bottom ends of the two first connecting rods, the third connecting shaft sequentially passes through the top ends of the second connecting rods, the fourth connecting shaft sequentially passes through the bottom ends of the second connecting rods, the two ends of the first connecting shaft are rotationally connected with the frame body, and the two ends of the fourth connecting shaft are rotationally connected with the base.

[0011] As preferred, the two ends of the third connecting shaft are both rotationally connected with a first sliding block, the frame body is provided with two first sliding grooves, the two first sliding grooves correspond to and match the two first sliding blocks, the first sliding grooves are parallel to the left-right direction, and the first sliding blocks are arranged in the first sliding grooves.

[0012] As preferred, the two ends of the second connecting shaft are both rotationally connected with a second sliding block, the base is provided with two second sliding grooves, the two second sliding grooves correspond to and match the two second sliding blocks, the second sliding grooves are parallel to the left-right direction, and the second sliding blocks are arranged in the second sliding grooves.

[0013] Compared with the prior art, the electric stretcher vehicle has the following advantages:

[0014] The electric stretcher vehicle of the utility model replaces the oil cylinder with the electric push rod, has no oil leakage risk and is suitable for harsh environments, thereby improving the lifting reliability of the frame body, in addition, the air spring is arranged, the frame body is prevented from falling when the electric push rod is damaged, and the safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic view of the electric stretcher vehicle.

[0016] Fig. 2 This is a schematic diagram of the connection structure between the two lifting mechanisms.

[0017] in:

[0018] The frame body is 100, the base is 200, the rollers are 300, the support wheels are 400, and the lifting mechanism is 500.

[0019] Electric push rod 501, gas spring 502, first connecting rod 503, second connecting rod 504, first connecting shaft 505, second connecting shaft 506, third connecting shaft 507, fourth connecting shaft 508, first slider 509, first slide groove 510, second slider 511, second slide groove 512. Detailed Implementation

[0020] like Figs. 1-2 As shown, an electric stretcher cart in this embodiment includes a frame body 100 and a base 200 distributed vertically. The base 200 is provided with rollers 300, and the frame body 100 is provided with support wheels 400. Two lifting mechanisms 500 are provided between the frame body 100 and the base 200, and the two lifting mechanisms 500 are arranged symmetrically front and back.

[0021] The lifting mechanism 500 includes an electric push rod 501, a gas spring 502, a first connecting rod 503, and a second connecting rod 504. The middle ends of the first connecting rod 503 and the second connecting rod 504 are hinged together, forming an X-shape. The top end of the first connecting rod 503 is hinged to the frame body 100, and the top end of the second connecting rod 504 is slidably connected to the frame body 100 in the left-right direction. The bottom end of the first connecting rod 503 is connected to the base 200 in the left-right direction. The sliding connection is as follows: the bottom end of the second connecting rod 504 is hinged to the base 200; the sliding connection direction between the second connecting rod 504 and the frame body 100 is such that the electric push rod 501 and the gas spring 502 are both arranged at an angle; the cylinder end of the electric push rod 501 is hinged to the first connecting rod 503; the piston end of the electric push rod 501 is hinged to the top end of the second connecting rod 504; the housing end of the gas spring 502 is hinged to the first connecting rod 503; and the piston end of the gas spring 502 is hinged to the second connecting rod 504.

[0022] During the work, when the frame body 100 needs to rise, the piston end of the electric push rod 501 extends, because the top end of the first connecting rod 503 is hinged with the frame body 100, the bottom end of the first connecting rod 503 is slidingly connected with the base 200, the top end of the second connecting rod 504 is slidingly connected with the frame body 100, and the bottom end of the second connecting rod 504 is rotationally connected with the base 200, so that the X-shaped height formed by the connecting rod and the second connecting rod 504 increases, that is, the first connecting rod 503 is driven to rotate around the hinge point of the first connecting rod 503 and the second connecting rod 504, and the distance between the top end of the first connecting rod 503 and the top end of the second connecting rod 504 is reduced, at the same time, the bottom end of the first connecting rod 503 and the base 200 produce relative sliding in the left and right directions, and the top end of the second connecting rod 504 and the frame body 100 produce relative sliding in the left and right directions. In fact, the first connecting rod 503 and the second connecting rod 504 form an extension frame structure, when the frame body 100 needs to descend, the piston end of the electric push rod 501 retracts, that is, the frame body 100 is reversely moved to realize the descent of the frame body 100, when the descent of the frame body 100 drives the supporting wheel 400 to abut against the ground, the frame body 100 is in the lowest position;

[0023] Among them, the electric push rod 501 is an automatic equipment for realizing linear motion through electric drive, which uses an electric motor as a power source and converts rotary motion into linear motion through a mechanical transmission system to complete the motion task under different working conditions. Compared with the oil cylinder, there is no risk of oil leakage, and it is suitable for harsh environments, thereby improving the lifting reliability of the frame body 100;

[0024] Secondly, the air spring 502 plays a supporting effect, when the electric push rod 501 is damaged due to aging and other reasons and cannot support the frame body 100, the air spring 502 supports the frame body 100 to avoid the frame body 100 from falling when the electric push rod 501 is damaged, thereby improving the safety;

[0025] Further comprising a first connecting shaft 505, a second connecting shaft 506, a third connecting shaft 507 and a fourth connecting shaft 508, the first connecting shaft 505, the second connecting shaft 506, the third connecting shaft 507 and the fourth connecting shaft 508 are all parallel to the front and rear directions, the first connecting shaft 505 passes through the top ends of the two first connecting rods 503 in sequence, the second connecting shaft 506 passes through the bottom ends of the two first connecting rods 503 in sequence, the third connecting shaft 507 passes through the top ends of the second connecting rods 504 in sequence, and the fourth connecting shaft 508 passes through the bottom ends of the second connecting rods 504 in sequence. The two ends of the first connecting shaft 505 are rotationally connected with the frame body 100, and the two ends of the fourth connecting shaft 508 are rotationally connected with the base 200;

[0026] Both ends of the third connecting shaft 507 are rotatably connected with first sliding blocks 509, and the frame body 100 is provided with two first sliding grooves 510, the two first sliding grooves 510 correspond to and match the two first sliding blocks 509 one by one, the first sliding groove 510 is parallel to the left-right direction, and the first sliding block 509 is arranged in the first sliding groove 510;

[0027] Both ends of the second connecting shaft 506 are rotatably connected with second sliding blocks 511, and the base 200 is provided with two second sliding grooves 512, the two second sliding grooves 512 correspond to and match the two second sliding blocks 511 one by one, the second sliding groove 512 is parallel to the left-right direction, and the second sliding groove 512 is arranged in the second sliding groove 512;

[0028] When the frame body 100 is lifted, the first sliding block 509 slides in the first sliding groove 510 along the left-right direction, and the second sliding block 511 slides in the second sliding groove 512 along the left-right direction;

[0029] In conclusion, by replacing the oil cylinder with the electric push rod 501, there is no risk of oil leakage, and the electric push rod 501 is suitable for harsh environments, thereby improving the lifting reliability of the frame body 100, in addition, by arranging the gas spring 502, the frame body 100 is prevented from falling when the electric push rod 501 is damaged, and the safety is improved.

[0030] In addition to the above-mentioned embodiments, the utility model also includes other implementation manners, and technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the utility model claims.

Claims

1. An electric stretcher vehicle, comprising an upper and lower distributed vehicle frame body (100) and a base (200), wherein the base (200) is provided with a rolling wheel (300), characterized in that: Two lifting mechanisms (500) are arranged between the frame body (100) and the base (200), and the two lifting mechanisms (500) are arranged front and back. The lifting mechanism (500) comprises an electric push rod (501), an air spring (502), a first connecting rod (503) and a second connecting rod (504), the middle end of the first connecting rod (503) and the middle end of the second connecting rod (504) are hinged, the first connecting rod (503) and the second connecting rod (504) form an X shape, the top end of the first connecting rod (503) is hinged with the frame body (100), the top end of the second connecting rod (504) is slidingly connected with the frame body (100) in the left-right direction, the bottom end of the first connecting rod (503) is slidingly connected with the base (200) in the left-right direction, the bottom end of the second connecting rod (504) is hinged with the base (200), the sliding connection direction of the second connecting rod (504) and the frame body (100), the electric push rod (501) and the air spring (502) are both arranged obliquely, the cylinder end of the electric push rod (501) is hinged with the first connecting rod (503), the piston end of the electric push rod (501) is hinged with the top end of the second connecting rod (504), the shell end of the air spring (502) is hinged with the first connecting rod (503), and the piston end of the air spring (502) is hinged with the second connecting rod (504).

2. The electrically powered stretcher cart of claim 1, wherein: The frame body (100) is provided with a support wheel (400).

3. The electrically powered stretcher cart of claim 1, wherein: The first connecting shaft (505), the second connecting shaft (506), the third connecting shaft (507) and the fourth connecting shaft (508) are all parallel to the front and back directions, the first connecting shaft (505) passes through the top ends of the two first connecting rods (503) in sequence, the second connecting shaft (506) passes through the bottom ends of the two first connecting rods (503) in sequence, the third connecting shaft (507) passes through the top ends of the second connecting rods (504) in sequence, the fourth connecting shaft (508) passes through the bottom ends of the second connecting rods (504) in sequence, and the two ends of the first connecting shaft (505) are rotationally connected with the frame body (100), and the two ends of the fourth connecting shaft (508) are rotationally connected with the base (200).

4. The electrically powered stretcher cart of claim 3, wherein: The two ends of the third connecting shaft (507) are rotationally connected with first sliding blocks (509), and the frame body (100) is provided with two first sliding grooves (510), the two first sliding grooves (510) correspond to and match the two first sliding blocks (509) one by one, the first sliding groove (510) is parallel to the left-right direction, and the first sliding block (509) is arranged in the first sliding groove (510).

5. The electrically powered stretcher cart of claim 3, wherein: Both ends of the second connecting shaft (506) are rotatably connected with a second sliding block (511), two second sliding grooves (512) are arranged on the base (200), the two second sliding grooves (512) correspond to and match the two second sliding blocks (511) one by one, the second sliding groove (512) is parallel to the left-right direction, and the second sliding groove (512) is arranged in the second sliding groove (512).

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