CN113147870A

CN113147870A - Double-linkage medical oxygen bottle carrier

Info

Publication number: CN113147870A
Application number: CN202110562498.0A
Authority: CN
Inventors: 王水龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-07-23

Abstract

The invention discloses a duplex medical oxygen cylinder carrier, two wheels are arranged on two sides of a frame, three universal casters are arranged on the rear side of the frame, a clamping plate is arranged at the front end of each of four arms in each clamping mechanism, the rear side of each clamping mechanism is rotatably connected with a roll-over stand, a first connecting rod is rotatably connected with a second arm and a fourth arm, a second connecting rod is rotatably connected with a first arm and a third arm, the two clamping mechanisms are rotatably connected with the frame, a hydraulic pump is communicated with two hydraulic cylinders, treading on a pedal can realize the extension of the hydraulic cylinders, a transverse groove rod drives the first connecting rod and the second connecting rod to move upwards, so that the four clamping plates clamp an oxygen cylinder, treading on a pressure relief valve can remove the thrust of the hydraulic cylinders, a first spring and a second spring pull the first connecting rod and the second connecting rod downwards to enable the four clamping plates to release the clamping of the oxygen cylinder, the clamping mechanisms swing forwards to enable front supporting wheels to contact the ground, a transport to the oxygen cylinder can be realized after being used for realizing the centre gripping and the process of releasing of oxygen cylinder, fixture to the backswing and locking.

Description

Double-linkage medical oxygen bottle carrier

Technical Field

The invention relates to the field of carriers, in particular to a duplex medical oxygen cylinder carrier.

Background

The oxygen cylinder is a very frequently used and very important medical device in a hospital, and is mainly used for the auxiliary treatment of respiratory system diseases (such as asthma, bronchitis, pulmonary heart disease and the like) and heart and cerebrovascular system diseases (such as coronary heart disease, myocardial infarction, cerebral hemorrhage and cerebral infarction) caused by oxygen deficiency so as to relieve the oxygen deficiency symptom; can also be used for health care oxygen inhalation or rapid relief of fatigue after mental labor and physical labor; oxygen cylinder erects in the ward generally during oxygen therapy, because oxygen cylinder is thin high, stability is very poor, if touch carelessly, takes place to empty very easily, in case empty, the patient will be very dangerous, and oxygen cylinder is from great moreover, need remove after using up and change new oxygen cylinder, and the body is smooth cylinder, does not have the stress point, is difficult to the transport.

The oxygen cylinder is a high-pressure container for storing and transporting oxygen, generally, a cylindrical airtight bottle body is made of alloy structural steel through stamping and welding, the whole weight is larger after the oxygen cylinder is filled with high-pressure oxygen, and the oxygen cylinder can be lifted and moved by two workers in a close-distance moving mode, but the danger is larger, and the personal safety of peripheral personnel is also threatened greatly; the transportation of longer distance can be realized through the oxygen cylinder carrier, the oxygen cylinder carrier usually includes the automobile body of slim and long type, the automobile body lower extreme has the layer board, the lower part of automobile body is provided with the gyro wheel, when carrying the oxygen cylinder, adjust the automobile body to vertical state, a staff lifts the bottom one side of oxygen cylinder off ground earlier, another staff impels the automobile body, make the layer board stretch into between the bottom surface and the ground of oxygen cylinder, then release the oxygen cylinder, the bottom of oxygen cylinder just is located the layer board, fix the jar body on the carrier main part with the bandage, pull the upper end of automobile body backward again, make the automobile body incline backward, it shifts the oxygen cylinder to promote the automobile body at last, this kind of method needs two people to cooperate just can accomplish, and consuming time and difficultly, efficiency is lower.

The invention patent with publication number CN107600130A discloses a medical oxygen bottle carrier, in order to make a pushing plate push an oxygen bottle forward to incline, a supporting plate is required to press the ground tightly and the carrier body is pushed forward, so that the pushing plate is pushed forward by the transmission of a bevel gear transmission rod, after the pushing plate pushes the oxygen bottle forward to generate a gap with the ground, the carrier body is pushed forward to insert the supporting plate into the lower side of the oxygen bottle, and the carrier body is pushed backward, thereby completing the loading of the oxygen bottle, but the technical defects are as follows: firstly, the oxygen cylinder is a slender cylinder, when the pushing plate pushes the oxygen cylinder to incline forwards, the gravity center of the oxygen cylinder is easy to move forwards and exceeds the range of the bottom of the oxygen cylinder, so that the oxygen cylinder drives the carrier to dump forwards through the protective belt, personnel are easy to hurt, and high-pressure oxygen in the oxygen cylinder can be exploded due to large vibration, thereby causing greater safety accidents; secondly, waterproof and anti-skid coatings are generally brushed on the ground of the ward, and when the carrier body is pushed forwards, the supporting plate always presses the ground, so that the ground coating can be scratched, scraping noise can be generated, and the recovery of patients is not favorable; the structure is unreasonable, the pushing plate can be extended forwards and the oxygen cylinder can be pushed forwards by the forward tilting carrier body, and when the supporting plate is about to be inserted into the lower end of the oxygen cylinder, if the oxygen cylinder is not tilted forwards, the supporting plate cannot be inserted into the lower end of the oxygen cylinder; if the oxygen cylinder is inclined forwards, the oxygen cylinder moves forwards continuously to ensure that the oxygen cylinder inclines forwards in the process that the supporting plate is inserted into the lower end of the oxygen cylinder, so that the oxygen cylinder is toppled forwards to cause safety accidents; fourthly, the operation is very difficult, and an operator needs to control the proper forward inclination angle of the carrier body and push the carrier to move forward to insert the supporting plate into the lower end of the oxygen cylinder in the process of loading the oxygen cylinder; the carrier inclines forward the angle undersize, and the gap between oxygen cylinder and the ground is not enough inserts the layer board, and the carrier inclines forward the angle oversize, will make the oxygen cylinder empty forward again, and the operation degree of difficulty when uninstalling the oxygen cylinder is also great.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a duplex medical oxygen cylinder carrier which is novel in structure, stable in movement and convenient to use.

The technical scheme adopted by the invention is as follows: the utility model provides a medical oxygen cylinder carrier of pair, includes frame mechanism, first fixture, second fixture, locking mechanism, its characterized in that: the frame mechanism comprises a frame, wheels, front supporting wheels, a hydraulic pump, universal casters, a first hydraulic pipe and a second hydraulic pipe; the first clamping mechanism comprises a hydraulic cylinder, a clamping plate, a fourth arm, a transverse groove rod, a second arm, a roll-over stand, a second connecting rod, a first spring, a second spring, a spring terminal, a first arm, a first connecting rod, a fixed terminal, a third arm, a swing rod, a pull ring rod, a first rotating wheel and a second rotating wheel, and the second clamping mechanism is the same as the first clamping mechanism in structure; the locking mechanism comprises a locking plate, a left hook plate, a right hook plate, a left spring piece and a right spring piece.

Two wheels are respectively and rotatably arranged on two sides of a frame, three universal casters are arranged on the lower side of the rear end of the frame, a hydraulic pump is fixedly arranged on the rear side of the frame, a first clamping mechanism is rotatably arranged in front of the right side of the frame, a second clamping mechanism is rotatably arranged in front of the left side of the frame, the front ends of a first arm, a second arm, a third arm and a fourth arm in the first clamping mechanism are respectively and rotatably provided with a clamping plate, the rear side of the first clamping mechanism is respectively and rotatably connected with the back of a turnover frame, a first connecting rod is respectively and rotatably connected with the second arm and the fourth arm, a second connecting rod is respectively and rotatably connected with the first arm and the third arm, a hydraulic cylinder is fixedly connected with the turnover frame, the first connecting rod and the second connecting rod can be driven to move upwards through a transverse groove rod when the hydraulic cylinder extends, the oxygen cylinder can be clamped through the first arm, the second arm, the third arm, the fourth arm and the four clamping plates, and after the thrust of the hydraulic cylinder is unloaded, the first spring and the second spring can pull the first connecting rod and the second connecting rod downwards, the four clamping plates are released from clamping the oxygen cylinder, the first hydraulic pipe communicates the hydraulic pump with the hydraulic cylinder in the first clamping mechanism, the second hydraulic pipe communicates the hydraulic pump with the hydraulic cylinder in the second clamping mechanism, when the reversing valve is pulled rightwards, the hydraulic pump can pressurize and release the hydraulic cylinder in the first clamping mechanism, when the reversing valve is pulled leftwards, the hydraulic pump can pressurize and release the hydraulic cylinder in the second clamping mechanism, the pedal is stepped to extend the corresponding oil cylinder, the thrust of the corresponding hydraulic cylinder can be removed by the stepping of the pressure release valve, the upper ends of the first clamping mechanism and the second clamping mechanism are respectively provided with a locking mechanism, the locking mechanism can lock the corresponding turning frame close to the frame, the first clamping mechanism or the second clamping mechanism can make the two front supporting wheels contact the ground after forward swinging, and the state is used for clamping and releasing the oxygen cylinder, first fixture and second fixture can realize the transportation to the oxygen cylinder after swinging backward and locking.

Preferably, the middle position of the upper end of the frame in the frame mechanism is provided with a handrail for realizing the control of the carrier, the right side of the upper end of the frame is provided with a right lock frame, the left side of the upper end of the frame is provided with a left lock frame, the frame is close to the lower end and is sequentially provided with a first stop lever, a second stop lever, a third stop lever and a fourth stop lever from right to left, the right side of the front end of the frame is provided with a right wheel shaft, the left side of the front end of the frame is provided with a left wheel shaft, and the front end of the frame is sequentially and coaxially provided with a first overturning shaft, a second overturning shaft, a third overturning shaft and a fourth overturning shaft from right to left.

Preferably, a wheel is rotatably mounted on the left wheel shaft, a wheel is rotatably mounted on the right wheel shaft, the hydraulic pump is fixedly mounted on the rear side of the frame, the front end of the hydraulic pump is provided with a pressure release valve, a reversing valve and two oil ports, the rear end of the hydraulic pump is provided with a pedal, two universal casters are mounted on two sides of the rear end of the frame and used for supporting the balance of the carrier, a universal caster is mounted in the middle position of the rear end of the frame and used for supporting the hydraulic pump when the pedal is stepped on, the two wheels and the three universal casters are in contact with the ground together, and the carrier can freely move on the ground.

Preferably, the front side of the roll-over stand in the first clamping mechanism is provided with a cambered surface structure, a layer of anti-static rubber is arranged on the cambered surface and used for increasing the friction coefficient and preventing static electricity, the upper end of the back surface of the roll-over stand is provided with a connecting lug, a first rotating shaft, the upper end of the first rotating shaft is coaxially provided with a conical insertion rod, the top end of the conical insertion rod is of a conical structure, the diameter of a base circle of the conical structure is larger than that of the conical insertion rod, the longitudinal middle position of the back surface of the roll-over stand is provided with a terminal shaft and a second rotating shaft, two sides of the back surface of the roll-over stand are further provided with a left baffle plate and a right baffle plate, the middle position of the lower end of the back surface of the roll-over stand is provided with a fixed plate, the left rotating plate is arranged on the left rotating plate, a right rotating plate is arranged on the right rotating plate and is coaxial with a round hole on the left rotating plate, and two sides of the lower end of the front side of the roll-over stand are respectively provided with a left supporting rod and a right supporting rod.

Preferably, the round hole on the left turning plate of the turning frame in the first clamping mechanism is rotationally connected with the second turning shaft, and the round hole on the right turning plate is rotationally connected with the first turning shaft, so that the turning frame and the frame form a rotating pair, and the first clamping mechanism is rotationally arranged in front of the right side of the frame; a round hole on a left turning plate of the turning frame in the second clamping mechanism is rotationally connected with a fourth turning shaft, and a round hole on a right turning plate is rotationally connected with a third turning shaft, so that the turning frame in the second clamping mechanism and the frame form a revolute pair, and the second clamping mechanism is rotationally arranged in front of the left side of the frame; the front end of the left supporting rod is rotatably provided with a front supporting wheel, and the front end of the right supporting rod is rotatably provided with a front supporting wheel.

Preferably, the inner side of the clamping plate is an arc surface, a layer of anti-static rubber is arranged in the arc surface and used for increasing the friction coefficient and preventing static electricity, the front end of the first arm is rotatably provided with the clamping plate, the rotating center is positioned at the position, close to the upper end, of the back surface of the clamping plate, so that the clamping plate is always kept in a nearly vertical state under the action of self gravity, the first arm and the first rotating shaft form a rotating pair, the front end of the second arm is rotatably provided with the clamping plate, the rotating center is positioned at the position, close to the upper end, of the back surface of the clamping plate, the second arm and the first rotating shaft form a rotating pair, the front end of the third arm is rotatably provided with the clamping plate, the rotating center is positioned at the position, close to the upper end, the back surface of the clamping plate, and the fourth arm and the second rotating shaft form a rotating pair, the right end of the first arm and the upper end of the second connecting rod form a revolute pair, the right end of the third arm and the position of the second connecting rod close to the lower end form a revolute pair, so that the first arm, the third arm, the second connecting rod and the roll-over stand form a parallelogram structure, the first arm and the third arm can synchronously swing, the left end of the second arm and the upper end of the first connecting rod form a revolute pair, and the left end of the fourth arm and the position of the first connecting rod close to the lower end form a revolute pair, so that the second arm, the fourth arm, the first connecting rod and the roll-over stand form a parallelogram structure, and the second arm and the fourth arm can synchronously swing.

Preferably, the lower end of the fixed terminal is rotatably connected with the terminal shaft, the upper end of the first spring forms a rotating pair with the position, close to the upper end, of the first connecting rod through a spring terminal, the lower end of the first spring forms a rotating pair with the fixed terminal through a spring terminal, so that the first connecting rod always tends to move downwards under the action of the tensile force of the first spring, the upper end of the second spring forms a rotating pair with the position, close to the upper end, of the second connecting rod through a spring terminal, the lower end of the second spring forms a rotating pair with the fixed terminal through a spring terminal, and the second connecting rod always tends to move downwards under the action of the tensile force of the second spring.

Preferably, the pneumatic cylinder lower extreme is connected with the fixed plate fastening, the pneumatic cylinder upper end is connected with cross slot pole fastening, cross slot pole left side is equipped with the high slope spout in the low right side in a left side, cross slot pole right side is equipped with the high slope spout in the high right side in a left side, first connecting rod lower extreme can slide in the left spout of cross slot pole, second connecting rod lower extreme can slide in the spout on cross slot pole right side, first hydraulic pressure pipe communicates hydraulic cylinder in an hydraulic port and the first fixture of hydraulic pump front end, second hydraulic pressure pipe communicates another hydraulic port of hydraulic pump front end and the pneumatic cylinder in the second fixture.

Preferably, the right end of the swing rod is rotatably connected with the connecting lug to enable the swing rod to swing up and down, the right end of the pull ring rod and the left end of the swing rod form a rotating pair, a first rotating wheel and a second rotating wheel are arranged at positions, close to the middle, of the pull ring rod, the first rotating wheel and the second rotating wheel are symmetrically arranged on two sides of the pull ring rod and form a rotating pair with the pull ring rod, and the left end of the pull ring rod is provided with a pull ring convenient for holding and applying force.

Preferably, a bottom panel, a top panel, a left rotating shaft, a right rotating shaft and a limiting block are arranged on a lock plate in the locking mechanism, a cavity structure with an upper end opening is arranged between the bottom panel and the top panel, the limiting block is arranged at the middle position of the upper end of the cavity structure, a strip hole is arranged at the center position of the bottom panel, a round hole arranged at the center position of the top panel and the center of the strip hole on the bottom panel coincide, and the left rotating shaft and the right rotating shaft are further arranged between the bottom panel and the top panel.

Preferably, the right side of the upper end of the left hook plate is provided with an opening surface, the lower side of the opening surface is provided with a limiting surface, the lower side of the limiting surface is provided with an arc-shaped clamping edge, and the lower end of the left hook plate is provided with a spring surface; the right hook plate and the left hook plate are in bilateral symmetry, and the right hook plate is also provided with an opening surface, a limiting surface, a clamping edge and a spring surface.

Preferably, the lower end of the left hook plate is rotatably connected with the left rotating shaft, and the left spring piece is arranged between the spring surface at the lower end of the left hook plate and the bottom side of the inside of the lock plate, so that the left hook plate rotates rightwards under the action of the elasticity of the left spring piece until the limiting surface of the left hook plate presses the limiting block in the lock plate; the lower end of the right hook plate is rotatably connected with the right rotating shaft, and the right spring piece is installed between the spring surface at the lower end of the right hook plate and the bottom side inside the lock plate, so that the right hook plate rotates leftwards under the action of the elasticity of the right spring piece until the limiting surface of the right hook plate compresses a limiting block in the lock plate.

Preferably, the right lock frame is provided with a locking mechanism through four screws, and the left lock frame is provided with a locking mechanism through four screws.

The invention has the beneficial effects that:

one operator can load, transport and unload the oxygen cylinder, so that the labor resource is saved, the use is convenient, and the transport efficiency is high.

The two front supporting wheels are arranged on the front side of the turnover frame, the turnover frame can be translated in a vertical state in the oxygen cylinder loading process, the oxygen cylinder does not need to be inclined first, the possibility of the oxygen cylinder falling accident in the loading process is completely avoided, the safety is high, and the loading form is high in novelty.

The oxygen cylinder is convenient to unload and accurate in positioning, the oxygen cylinder can be directly placed at a target position, subsequent manual position adjustment is not needed, and the oxygen cylinder is convenient to use.

And anti-static rubber is arranged on the front side of the roll-over stand and the inner side of the clamping plate, so that the friction coefficient is increased, the clamping of the clamping plate on the oxygen cylinder is more stable, and combustion and explosion caused by static electricity can be prevented.

The locking device formed by the locking mechanism, the pull ring rod and the swing rod is novel in structure and stable in locking, and the pull ring structure is convenient for operators to operate and apply force in the overturning process of the overturning frame and is convenient to use.

The clamping to the oxygen cylinder is realized to the footboard realization that operating personnel accessible trampled the hydraulic pump, can realize the opening to the oxygen cylinder through trampling the relief valve, convenient operation to hydraulic drive has drive power big, and the motion is steady, advantages such as auto-lock is stable.

The first arm and the third arm form a parallelogram structure with the frame through the second connecting rod, the second arm and the fourth arm form a parallelogram structure with the frame through the first connecting rod, and the two parallelogram structures can enable the four clamping plates to simultaneously and symmetrically clamp the oxygen cylinder, so that the clamping is safer and more stable.

The first clamping mechanism and the second clamping mechanism form a double-loading carrier, the carrying efficiency of the oxygen cylinder can be effectively improved, and the double-loading carrier can also be used for simultaneously carrying the oxygen cylinder and the acetylene cylinder in oxyacetylene welding.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic structural view of the roll-over stand portion when the first clamping mechanism releases the oxygen cylinder.

Fig. 4 is a schematic structural diagram of the roll-over stand part when the first clamping mechanism clamps the oxygen cylinder.

Fig. 5 is an enlarged partial cross-sectional view of the present invention.

Fig. 6 is a schematic view of the locking mechanism locking the roll stand.

Fig. 7 is a schematic view when the lock mechanism is open.

FIG. 8 is a schematic view of the awl bar after disengagement of the locking mechanism.

Fig. 9 is a schematic sectional view of the locking mechanism at the time of locking.

Fig. 10 is a schematic sectional view showing the lock mechanism when it is opened.

Fig. 11 is a schematic structural view of the vehicle frame.

Fig. 12 is a schematic structural view of the roll-over stand.

Fig. 13 is a schematic structural view of the drawbar.

Fig. 14 is a schematic structural view of the lock plate.

Fig. 15 is a schematic structural view of the left hook plate.

Reference numerals: 1 vehicle frame, 1.1 handrail, 1.2 right lock frame, 1.3 left lock frame, 1.4 first stop lever, 1.5 second stop lever, 1.6 third stop lever, 1.7 fourth stop lever, 1.8 right wheel axle, 1.9 first roll-over shaft, 1.10 second roll-over shaft, 1.11 third roll-over shaft, 1.12 fourth roll-over shaft, 1.13 left wheel axle, 2 wheels, 3 front supporting wheels, 4 hydraulic cylinders, 5 clamp plate, 6 fourth arm, 7 transverse slotted rod, 8 second arm, 9 lock plate, 9.1 bottom plate, 9.2 top plate, 9.3 left rotating shaft, 9.4 right rotating shaft, 9.5 pressure relief valve, 10 roll-over frame, 10.1 connecting lug, 10.2 first rotating shaft, 10.3 conical insertion rod, 10.4 terminal shaft, 10.5 second rotating shaft, 10.6 left baffle, 10.7 right baffle, 10.8 right pedal rotating plate, 10.1 connecting rod, 10.2 first rotating shaft, 10.3 conical insertion rod, 10.4 connecting rod, 10.5 second rotating shaft, 10.6 left hydraulic pump, 12 connecting rod, 12.12 universal hydraulic pump, 1 universal hydraulic cylinder, 12 universal hydraulic cylinder, 1, 12 universal hydraulic cylinder, 1.12 universal hydraulic cylinder, 1 hydraulic cylinder, 10.7 right connecting rod, 10.7 universal hydraulic cylinder, 10.1 universal hydraulic cylinder, 10.2 universal hydraulic cylinder, 1 universal hydraulic cylinder, 9.1, 9.6 right pedal, 1 universal hydraulic cylinder, 1 universal cylinder, 1.6 right pedal, 1 universal cylinder, 1, 1.6, 1 universal cylinder, 1.6 left pedal, 1, 1.6 right pedal, 1 universal cylinder, 1, 1.6 right pedal, 1, and right pedal, 1, 16.1 first spring, 16.2 second spring, 17 spring terminal, 18 first arm, 19 first connecting rod, 20 fixed terminal, 21 third arm, 22 swing rod, 23 pull ring rod, 23.1 first rotating wheel, 23.2 second rotating wheel, 23.3 pull ring, 24 left hook plate, 24.1 spreading surface, 24.2 spacing surface, 24.3 clamping edge, 24.4 spring surface, 25 right hook plate, 26.1 left spring piece and 26.2 right spring piece.

Detailed Description

The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 and 2, a duplex medical oxygen cylinder carrier comprises a frame mechanism, a first clamping mechanism, a second clamping mechanism and a locking mechanism, and is characterized in that: the frame mechanism comprises a frame 1, wheels 2, front wheels 3, a hydraulic pump 12, universal casters 13, a first hydraulic pipe 14.1 and a second hydraulic pipe 14.2; the first clamping mechanism comprises a hydraulic cylinder 4, a clamping plate 5, a fourth arm 6, a transverse groove rod 7, a second arm 8, a roll-over stand 10, a second connecting rod 15, a first spring 16.1, a second spring 16.2, a spring terminal 17, a first arm 18, a first connecting rod 19, a fixed terminal 20, a third arm 21, a swing rod 22, a pull ring rod 23, a first rotating wheel 23.1 and a second rotating wheel 23.2, and the second clamping mechanism is the same as the first clamping mechanism in structure; the locking mechanism comprises a locking plate 9, a left hook plate 24, a right hook plate 25, a left spring piece 26.1 and a right spring piece 26.2.

Two wheels 2 are respectively rotatably arranged at two sides of a frame 1, three universal casters 13 are arranged at the lower side of the rear end of the frame 1, a hydraulic pump 12 is fixedly arranged at the rear side of the frame 1, a first clamping mechanism is rotatably arranged at the front of the right side of the frame 1, a second clamping mechanism is rotatably arranged at the front of the left side of the frame 1, a clamp plate 5 is respectively rotatably arranged at the front ends of a first arm 18, a second arm 8, a third arm 21 and a fourth arm 6 in the first clamping mechanism, the rear side is rotatably connected with the back of a roll-over stand 10, a first connecting rod 19 is rotatably connected with the second arm 8 and the fourth arm 6, a second connecting rod 15 is rotatably connected with the first arm 18 and the third arm 21, a hydraulic cylinder 4 is fixedly connected with the roll-over stand 10, when the hydraulic cylinder 4 extends, the first connecting rod 19 and the second connecting rod 15 can be driven to move upwards through a transverse groove rod 7, and the clamping of an oxygen cylinder 11 is realized through the first arm 18, the second arm 8, after the thrust of the hydraulic cylinder 4 is unloaded, the first spring 16.1 and the second spring 16.2 can pull the first connecting rod 19 and the second connecting rod 15 downwards to enable the four clamping plates 5 to release the clamping of the oxygen cylinder 11, the first hydraulic pipe 14.1 can communicate the hydraulic pump 12 with the hydraulic cylinder 4 in the first clamping mechanism, the second hydraulic pipe 14.2 can communicate the hydraulic pump 12 with the hydraulic cylinder in the second clamping mechanism, when the reversing valve 12.3 is pulled rightwards, the hydraulic pump 12 can realize the pressurization and pressure relief operation of the hydraulic cylinder 4 in the first clamping mechanism, when the reversing valve 12.3 is pulled leftwards, the hydraulic pump 12 can realize the pressurization and pressure relief operation of the hydraulic cylinder in the second clamping mechanism, when the pedal 12.1 is stepped to enable the corresponding oil cylinder to extend, the pressure relief valve 12.2 is stepped to unload the thrust of the corresponding hydraulic cylinder, a locking mechanism is arranged at the upper ends of the first clamping mechanism and the second clamping mechanism, the locking mechanism can lock the corresponding overturning frame close to the frame 1, first fixture or second fixture can make two front supporting wheels 3 contact ground after swinging forward, and this state is used for realizing the centre gripping and the process of releasing to oxygen cylinder 11, and first fixture and second fixture can realize the transportation to oxygen cylinder 11 after swinging backward and the locking.

As shown in fig. 1, 5 and 11, a handrail 1.1 is arranged at the middle position of the upper end of a frame 1 in a frame mechanism and used for realizing the control of a transport vehicle, a right lock frame 1.2 is arranged on the right side of the upper end of the frame 1, a left lock frame 1.3 is arranged on the left side of the upper end, a first stop lever 1.4, a second stop lever 1.5, a third stop lever 1.6 and a fourth stop lever 1.7 are sequentially arranged on the frame 1 close to the lower end from right to left, a right wheel shaft 1.8 is arranged on the right side of the front end of the frame 1, a left wheel shaft 1.13 is arranged on the left side of the front end, and a first turnover shaft 1.9, a second turnover shaft 1.10, a third turnover shaft 1.11 and a fourth turnover shaft 1.12 are sequentially and coaxially arranged on the front end of the frame 1 from right to left.

Rotate on the left side shaft 1.13 and install a wheel 2, rotate on the right side shaft 1.8 and install a

wheel

2, 12 fixed mounting in 1 rear side of frame of hydraulic pump, 12 front ends of hydraulic pump are equipped with relief valve 12.2, switching-over valve 12.3 and two hydraulic fluid ports, the rear end is equipped with footboard 12.1, two casters 13 are installed to 1 rear end both sides of frame, a caster 13 is installed for supporting the balance of carrier, 1 rear end intermediate position of frame, provide the support for hydraulic pump 12 when stepping on footboard 12.1, two wheels 2 and three caster 13 contact ground jointly, make the carrier can subaerial free movement.

As shown in fig. 3, 4, 6, 7, 8 and 12, the front side of the roll-over stand 10 of the first clamping mechanism is provided with a cambered surface structure, a layer of anti-static rubber is arranged on the cambered surface for increasing the friction coefficient and preventing static electricity, the upper end of the back of the roll-over stand 10 is provided with a connecting lug 10.1 and a first rotating shaft 10.2, the upper end of the first rotating shaft 10.2 is coaxially provided with a conical insertion rod 10.3, the top end of the conical insertion rod 10.3 is in a conical structure, the diameter of the bottom circle of the conical structure is larger than that of the conical insertion rod 10.3, the longitudinal middle position of the back of the roll-over stand 10 is provided with a terminal shaft 10.4 and a second rotating shaft 10.5, the two sides of the back of the roll-over stand 9 are also provided with a left baffle 9.6 and a right baffle 9, the middle position of the back of the roll-over stand 10 is provided with a fixed plate 10.9, the left rotating plate 10.10 is arranged on the left side of the back lower end, the left rotating plate 10.10 is provided with a round hole, the right rotating plate 10.8, the right rotating plate is arranged with a round hole on the left rotating plate 10.10 coaxial with a left rotating plate 10, two sides of the lower end of the front side of the roll-over stand 10 are respectively provided with a left supporting rod 10.11 and a right supporting rod 10.12.

A round hole on a left turning plate 10.10 of a turning frame 10 in a first clamping mechanism is rotationally connected with a second turning shaft 1.10, and a round hole on a right turning plate 10.8 is rotationally connected with a first turning shaft 1.9, so that the turning frame 10 and a frame 1 form a revolute pair, and the first clamping mechanism is rotationally arranged in front of the right side of the frame 1; a round hole on a left rotating plate of the roll-over stand in the second clamping mechanism is rotationally connected with a fourth roll-over shaft 1.12, and a round hole on a right rotating plate is rotationally connected with a third roll-over shaft 1.11, so that the roll-over stand in the second clamping mechanism and the frame 1 form a revolute pair, and the second clamping mechanism is rotationally arranged in front of the left side of the frame 1; the front end of the left supporting rod 10.11 is rotatably provided with a front supporting wheel 3, and the front end of the right supporting rod 10.12 is rotatably provided with a front supporting wheel 3.

The inner side of the clamping plate 5 is an arc surface, a layer of anti-static rubber is arranged in the arc surface and used for increasing the friction coefficient and preventing static electricity, the front end of the first arm 18 is rotatably provided with the clamping plate 5, the rotating center is positioned at the position, close to the upper end, of the back surface of the clamping plate 5, so that the clamping plate 5 is always kept in a state close to the vertical state under the action of self gravity, the first arm 18 and the first rotating shaft 10.2 form a rotating pair, the front end of the second arm 8 is rotatably provided with the clamping plate 5, the rotating center is positioned at the position, close to the upper end, of the back surface of the clamping plate 5, the second arm 8 and the first rotating shaft 10.2 form a rotating pair, the front end of the third arm 21 is rotatably provided with the clamping plate 5, the rotating center is positioned at the position, close to the upper end, the back surface of the clamping plate 5 forms a rotating pair, the front end of the fourth arm 6 is rotatably provided with the clamping plate 5, and the rotating center is positioned at the position, close to the upper end, the back surface of the clamping plate 5, the fourth arm 6 and the second rotating shaft 10.5 form a rotating pair, the right end of the first arm 18 and the upper end of the second connecting rod 15 form a rotating pair, the right end of the third arm 21 and the position of the second connecting rod 15 close to the lower end form a rotating pair, so that the first arm 18, the third arm 21, the second connecting rod 15 and the roll-over stand 10 form a parallelogram structure, the first arm 18 and the third arm 21 can synchronously swing, the left end of the second arm 8 and the upper end of the first connecting rod 19 form a rotating pair, and the left end of the fourth arm 6 and the position of the first connecting rod 19 close to the lower end form a rotating pair, so that the second arm 8, the fourth arm 6, the first connecting rod 19 and the roll-over stand 10 form a parallelogram structure, and the second arm 8 and the fourth arm 6 can synchronously swing.

The lower end of the fixed terminal 20 is rotatably connected with the terminal shaft 10.4, the upper end of the first spring 16.1 forms a rotating pair with the upper end position of the first connecting rod 19 through the spring terminal 17, the lower end of the first spring 16.1 forms a rotating pair with the fixed terminal 20 through the spring terminal 17, so that the first connecting rod 19 always tends to move downwards under the action of the pulling force of the first spring 16.1, the upper end of the second spring 16.2 forms a rotating pair with the upper end position of the second connecting rod 15 through the spring terminal 17, the lower end of the second spring 16.2 forms a rotating pair with the fixed terminal 20 through the spring terminal 17, and the second connecting rod 15 always tends to move downwards under the action of the pulling force of the second spring 16.2.

4 lower extremes of pneumatic cylinder and fixed plate 10.9 fastening connection, 4 upper ends of pneumatic cylinder and 7 fastening connections of transverse groove pole, 7 left sides of transverse groove pole are equipped with the high slope spout in the low right side in a left side, 7 right sides of transverse groove pole are equipped with the high slope spout in a left side, 19 lower extremes of first connecting rod can slide in the left spout of

transverse groove pole

7, 15 lower extremes of second connecting rod can slide in the spout on transverse groove pole 7 right side, first hydraulic pressure pipe 14.1 communicates hydraulic cylinder 4 in an hydraulic pump 12 front end and the first fixture, second hydraulic pressure pipe 14.2 communicates another hydraulic port of hydraulic pump 12 front end and the pneumatic cylinder in the second fixture.

The right end of the swing rod 22 is rotatably connected with the connecting lug 10.1, so that the swing rod 22 can swing up and down, the right end of the pull ring rod 23 and the left end of the swing rod 22 form a revolute pair, a first rotating wheel 23.1 and a second rotating wheel 23.2 are arranged at the position, close to the middle, of the pull ring rod 23, the first rotating wheel 23.1 and the second rotating wheel 23.2 are symmetrically arranged on two sides of the pull ring rod 23 and form a revolute pair with the pull ring rod 23, and the left end of the pull ring rod 23 is provided with a pull ring 23.3 which is convenient for holding and applying force.

As shown in fig. 6, 9, 10, 13, 14, and 15, a bottom panel 9.1, a top panel 9.2, a left rotation shaft 9.3, a right rotation shaft 9.4, and a stopper 9.5 are disposed on a lock plate 9 of the locking mechanism, wherein a cavity structure with an open upper end is disposed between the bottom panel 9.1 and the top panel 9.2, the stopper 9.5 is disposed at the middle position of the upper end of the cavity structure, a long hole is disposed at the center of the bottom panel 9.1, a circular hole disposed at the center of the top panel 9.2 coincides with the center of the long hole on the bottom panel 9.1, and a left rotation shaft 9.3 and a right rotation shaft 9.4 are disposed between the top panel 9.2 and the bottom panel 9.1.

An opening surface 24.1 is arranged on the right side of the upper end of the left hook plate 24, a limiting surface 24.2 is arranged on the lower side of the opening surface 24.1, an arc-shaped clamping edge 24.3 is arranged on the lower side of the limiting surface 24.2, and a spring surface 24.4 is arranged at the lower end of the left hook plate 24; the right hook plate 25 and the left hook plate 24 are bilaterally symmetrical, and the right hook plate 25 is also provided with an opening surface, a limiting surface, a clamping edge and a spring surface.

The lower end of the left hook plate 24 is rotatably connected with the left rotating shaft 9.3, and a left spring leaf 26.1 is arranged between a spring face 24.4 at the lower end of the left hook plate 24 and the bottom side in the lock plate 9, so that the left hook plate 24 rotates rightwards under the action of the elasticity of the left spring leaf 26.1 until a limiting face 24.2 of the left hook plate 24 presses a limiting block 9.5 in the lock plate 9; the lower end of the right hook plate 25 is rotatably connected with the right rotating shaft 9.4, and the right spring piece 26.2 is arranged between the spring surface at the lower end of the right hook plate 25 and the bottom side inside the lock plate 9, so that the right hook plate 25 rotates leftwards under the action of the elastic force of the right spring piece 26.2 until the limiting surface of the right hook plate 25 presses the limiting block 9.5 in the lock plate 9.

A locking mechanism is fixedly arranged on the right lock frame 1.2 through four screws, and a locking mechanism is fixedly arranged on the left lock frame 1.3 through four screws.

The embodiment of the invention comprises the following steps:

as shown in fig. 1, 2, 3, 4, 6, 7, 8, 9 and 10, in an initial state, the first clamping mechanism tilts backward and abuts against the frame 1, the left baffle 10.6 presses the second baffle 1.5, the right baffle 10.7 presses the first baffle 1.4, the cone insertion rod 10.3 passes through a gap between the left hook plate 24 and the right hook plate 25 through a long hole on the bottom plate 9.1, and the clamping edge 24.3 of the left hook plate 24 and the clamping edge of the right hook plate 25 clamp the bottom circle of the cone structure, so that the position locking of the first clamping mechanism is realized; the second clamping mechanism leans backwards to abut against the frame 1, the position of the second clamping mechanism is locked by a set of locking mechanism, and a left baffle and a right baffle of the roll-over stand in the second clamping mechanism respectively press a fourth baffle rod 1.7 and a third baffle rod 1.6; meanwhile, the pressure release valve 12.2 is in a closed state, hydraulic cylinders in the first clamping mechanism and the second clamping mechanism are in a contracted state, the two transverse groove rods are in the lowest positions, and the clamping plates 5 in the first clamping mechanism and the second clamping mechanism are opened outwards; the first wheel 23.1 and the second wheel 23.2 are arranged longitudinally and are placed between the opening surface 24.1 of the left hook plate 24 and the opening surface of the right hook plate 25.

When the first clamping mechanism loads the oxygen cylinder 11: firstly, holding the pull ring 23.3 by hand and rotating for 90 degrees, so that the first rotating wheel 23.1 and the second rotating wheel 23.2 are in a transverse row state and respectively prop open the left hook plate 24 and the right hook plate 25 towards two sides, namely, the left hook plate 24 rotates towards the left, the right hook plate 25 rotates towards the right, and the clamping edge 24.3 of the left hook plate 24 and the clamping edge of the right hook plate 25 release the clamping of the conical structure on the conical insertion rod 10.3; secondly, the pull ring 23.3 is pushed forward to enable the conical insertion rod 10.3 to be separated from the lock plate 9, then the left hook plate 24 rotates rightwards under the action of the elasticity of the left spring piece 26.1 until the limiting surface 24.2 of the left hook plate 24 compresses a limiting block 9.5 in the lock plate 9, and the right hook plate 25 rotates leftwards under the action of the elasticity of the right spring piece 26.2 until the limiting surface of the right hook plate 25 compresses the limiting block 9.5; thirdly, the roll-over stand 10 is rotated forwards until the roll-over stand becomes a vertical state, at the moment, the two front supporting wheels 3 contact the ground, the carrier is pushed forwards, and the oxygen cylinder 11 contacts the cambered surface structure on the front side of the roll-over stand 10; fourthly, the reversing valve 12.3 is pulled rightwards, so that the hydraulic pump 12 is communicated with the hydraulic cylinder 4 in the first clamping mechanism through the first hydraulic pipe 14.1, and meanwhile, the communication between the hydraulic pump 12 and the hydraulic cylinder in the second clamping mechanism is cut off; repeatedly stepping down the pedal 12.1 to enable the hydraulic oil in the hydraulic pump 12 to enter the hydraulic cylinder 4 through the first hydraulic pipe 14.1 to enable the hydraulic oil to extend gradually, so that the transverse groove rod 7 moves upwards, and the first connecting rod 19 and the second connecting rod 15 drive the first arm 18, the second arm 8, the third arm 21 and the fourth arm 6 to swing downwards until the four clamping plates 5 clamp the oxygen cylinder 11; sixthly, pulling the pull ring 23.3 backwards to turn the roll-over stand 10 backwards until the cone insertion rod 10.3 is inserted into the locking mechanism and then locked; seventhly, the pull ring 23.3 is rotated by 90 degrees, so that the first rotating wheel 23.1 and the second rotating wheel 23.2 are arranged longitudinally and are placed between the opening surface 24.1 of the left hook plate 24 and the opening surface of the right hook plate 25; so that the two front wheels leave the ground, the two wheels 2 and the three universal casters 13 contact the ground, and the first clamping mechanism finishes loading the oxygen cylinder 11; when the second clamping mechanism loads the oxygen cylinder, the reversing valve 12.3 needs to be pulled leftwards in the fourth step, so that the hydraulic pump 12 is communicated with a hydraulic cylinder in the second clamping mechanism through a second hydraulic pipe 14.2, meanwhile, the communication between the hydraulic pump 12 and the hydraulic cylinder in the first clamping mechanism is cut off, and other process steps are the same as the loading process of the first clamping mechanism; when the first clamping mechanism and the second clamping mechanism are both in a locking state, the carrier can be moved to a target position.

When the first clamping mechanism unloads the oxygen cylinder 11: firstly, holding the pull ring 23.3 by hand and rotating the pull ring by 90 degrees to enable the first rotating wheel 23.1 and the second rotating wheel 23.2 to be in a transverse arrangement state and respectively prop open the left hook plate 24 and the right hook plate 25 towards two sides, and releasing the clamping of the clamping edge 24.3 of the left hook plate 24 and the clamping edge of the right hook plate 25 on the conical structure on the conical insertion rod 10.3; secondly, the pull ring 23.3 is pushed forwards to enable the conical insertion rod 10.3 to be separated from the lock plate 9; thirdly, the roll-over stand 10 is rotated forwards until the roll-over stand becomes vertical, at the moment, the two front supporting wheels 3 contact the ground, and the lower end of the oxygen cylinder 11 also contacts the ground; fourthly, the reversing valve 12.3 is pulled rightwards, so that the hydraulic pump 12 is communicated with the hydraulic cylinder 4 in the first clamping mechanism through the first hydraulic pipe 14.1, and meanwhile, the communication between the hydraulic pump 12 and the hydraulic cylinder in the second clamping mechanism is cut off; after the pressure release valve 12.2 is stepped downwards, the first connecting rod 19 and the second connecting rod 15 move downwards under the action of the tension of the first spring 16.1 and the second spring 16.2, so that the transverse groove rod 7 moves downwards, the hydraulic cylinder 4 contracts, hydraulic oil in the hydraulic cylinder 4 flows back to the hydraulic pump 12, meanwhile, the first arm 18, the second arm 8, the third arm 21 and the fourth arm 6 simultaneously swing upwards to realize the opening of the four clamping plates 5, and the unloading of the oxygen cylinder 11 in the first clamping mechanism can be finished by pulling the carrying vehicle backwards; when the second clamping mechanism unloads the oxygen cylinder, the reversing valve 12.3 needs to be pulled leftwards in the fourth step, so that the hydraulic pump 12 is communicated with the hydraulic cylinder in the second clamping mechanism through the second hydraulic pipe 14.2, meanwhile, the communication between the hydraulic pump 12 and the hydraulic cylinder in the first clamping mechanism is cut off, and other process steps are the same as the unloading process of the first clamping mechanism.

The references to "front", "back", "left", "right", etc., are to be construed as references to orientations or positional relationships based on the orientation or positional relationship shown in the drawings or as orientations and positional relationships conventionally found in use of the product of the present invention, and are intended to facilitate the description of the invention and to simplify the description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Claims

1. The utility model provides a medical oxygen cylinder carrier of pair, includes frame mechanism, first fixture, second fixture, locking mechanism, its characterized in that: the frame mechanism comprises a frame (1), wheels (2), front wheels (3), a hydraulic pump (12), universal casters (13), a first hydraulic pipe (14.1) and a second hydraulic pipe (14.2); the first clamping mechanism comprises a hydraulic cylinder (4), a clamping plate (5), a fourth arm (6), a transverse groove rod (7), a second arm (8), a roll-over stand (10), a second connecting rod (15), a first spring (16.1), a second spring (16.2), a spring terminal (17), a first arm (18), a first connecting rod (19), a fixed terminal (20), a third arm (21), a swing rod (22), a pull ring rod (23), a first rotating wheel (23.1) and a second rotating wheel (23.2), and the second clamping mechanism is the same as the first clamping mechanism in structure; the locking mechanism comprises a locking plate (9), a left hook plate (24), a right hook plate (25), a left spring piece (26.1) and a right spring piece (26.2);

two wheels (2) are respectively rotatably arranged at two sides of a frame (1), three universal casters (13) are arranged at the lower side of the rear end of the frame (1), a hydraulic pump (12) is fixedly arranged at the rear side of the frame (1), a first clamping mechanism is rotatably arranged in front of the right side of the frame (1), a second clamping mechanism is rotatably arranged in front of the left side of the frame (1), a first arm (18), a second arm (8), a third arm (21) and a fourth arm (6) in the first clamping mechanism are respectively rotatably provided with a clamping plate (5), the rear side is respectively rotatably connected with the back of a roll-over stand (10), a first connecting rod (19) is respectively rotatably connected with the second arm (8) and the fourth arm (6), a second connecting rod (15) is respectively rotatably connected with the first arm (18) and the third arm (21), a hydraulic cylinder (4) is fixedly connected with the roll-over stand (10), and the first connecting rod (19) and the second connecting rod (15) can be driven to move upwards through a transverse grooved rod (7) when the hydraulic cylinder (4) extends, the oxygen cylinder (11) is clamped through the first arm (18), the second arm (8), the third arm (21), the fourth arm (6) and the four clamping plates (5), after the thrust of the hydraulic cylinder (4) is unloaded, the first spring (16.1) and the second spring (16.2) can pull the first connecting rod (19) and the second connecting rod (15) downwards to enable the four clamping plates (5) to release the clamping of the oxygen cylinder (11), the hydraulic pump (12) is communicated with the hydraulic cylinder (4) in the first clamping mechanism through the first hydraulic pipe (14.1), the hydraulic pump (12) is communicated with the hydraulic cylinder in the second clamping mechanism through the second hydraulic pipe (14.2), when the reversing valve (12.3) is pulled rightwards, the hydraulic pump (12) can pressurize and release the hydraulic cylinder (4) in the first clamping mechanism, when the reversing valve (12.3) is pulled leftwards, the hydraulic pump (12) can pressurize and release the hydraulic cylinder in the second clamping mechanism, trample footboard (12.1) and can make the corresponding hydro-cylinder extension, trample the thrust that relief valve (12.2) can detach the corresponding pneumatic cylinder, a locking mechanism is all installed to first fixture and second fixture upper end, locking mechanism can lean on the roll-over stand that corresponds tightly frame (1) back locking, first fixture or second fixture can make two preceding supporting wheels (3) contact ground after swinging forward, this state is used for realizing the centre gripping and the process of releasing oxygen cylinder (11), can realize the transportation to oxygen cylinder (11) after first fixture and second fixture swung backward and the locking.

2. The duplex medical oxygen cylinder cart according to claim 1, wherein: a handrail (1.1) is arranged in the middle of the upper end of a frame (1) in the frame mechanism and used for realizing control of a carrier, a right lock frame (1.2) is arranged on the right side of the upper end of the frame (1), a left lock frame (1.3) is arranged on the left side of the upper end of the frame (1), a first stop lever (1.4), a second stop lever (1.5), a third stop lever (1.6) and a fourth stop lever (1.7) are sequentially arranged on the frame (1) close to the lower end from right to left, a right wheel shaft (1.8) is arranged on the right side of the front end of the frame (1), a left wheel shaft (1.13) is arranged on the left side of the front end of the frame (1), and a first turnover shaft (1.9), a second turnover shaft (1.10), a third turnover shaft (1.11) and a fourth turnover shaft (1.12) are sequentially and coaxially arranged on the front end of the frame (1) from right to left;

rotate on left side shaft (1.13) and install one wheel (2), rotate on right side shaft (1.8) and install one wheel (2), hydraulic pump (12) fixed mounting is in frame (1) rear side, hydraulic pump (12) front end is equipped with relief valve (12.2), switching-over valve (12.3) and two hydraulic fluid ports, the rear end is equipped with footboard (12.1), two universal caster (13) are installed to frame (1) rear end both sides, a universal caster (13) are installed to the balance for supporting the carrier, frame (1) rear end intermediate position, for providing the support for hydraulic pump (12) when stepping on footboard (12.1), two wheels (2) and three universal caster (13) contact ground jointly, make the carrier can freely remove on the ground.

3. The duplex medical oxygen cylinder cart according to claim 1, wherein: the front side of a roll-over stand (10) in the first clamping mechanism is provided with a cambered surface structure, a layer of anti-static rubber is arranged on the cambered surface and used for increasing the friction coefficient and preventing static electricity, the upper end of the back of the roll-over stand (10) is provided with a connecting lug (10.1) and a first rotating shaft (10.2), the upper end of the first rotating shaft (10.2) is coaxially provided with a cone inserted rod (10.3), the top end of the cone inserted rod (10.3) is of a cone structure, the diameter of the bottom circle of the cone structure is larger than that of the cone inserted rod (10.3), the longitudinal middle position of the back of the roll-over stand (10) is provided with a terminal shaft (10.4) and a second rotating shaft (10.5), the two sides of the back of the roll-over stand (10) are also provided with a left baffle plate (10.6) and a right baffle plate (10.7), the middle position of the lower end of the back of the roll-over stand (10) is provided with a fixed plate (10.9), the left rotating plate (10.10) is provided with a left rotating plate (10.10), the left rotating plate (10.10) is provided with a round hole, and the right rotating plate (10.8) is arranged on the lower end of the right side of the back, a round hole arranged on the right rotating plate (10.8) is coaxial with a round hole on the left rotating plate (10.10), and a left support rod (10.11) and a right support rod (10.12) are respectively arranged on two sides of the lower end of the front side of the roll-over stand (10);

a round hole on a left turning plate (10.10) of a turning frame (10) in a first clamping mechanism is rotationally connected with a second turning shaft (1.10), a round hole on a right turning plate (10.8) is rotationally connected with a first turning shaft (1.9), so that the turning frame (10) and a frame (1) form a revolute pair, and the first clamping mechanism is rotationally arranged in front of the right side of the frame (1); a round hole on a left turning plate of the turning frame in the second clamping mechanism is rotationally connected with a fourth turning shaft (1.12), and a round hole on a right turning plate is rotationally connected with a third turning shaft (1.11), so that the turning frame in the second clamping mechanism and the frame (1) form a revolute pair, and the second clamping mechanism is rotationally arranged in front of the left side of the frame (1); the front end of the left support rod (10.11) is rotatably provided with a front supporting wheel (3), and the front end of the right support rod (10.12) is rotatably provided with a front supporting wheel (3);

the inner side of the clamping plate (5) is an arc surface, a layer of anti-static rubber is arranged in the arc surface and used for increasing the friction coefficient and preventing static electricity, the front end of the first arm (18) is rotatably provided with the clamping plate (5), the rotating center is positioned at the position, close to the upper end, of the back surface of the clamping plate (5) so that the clamping plate (5) is always kept in a state close to the vertical direction under the action of self gravity, the first arm (18) and the first rotating shaft (10.2) form a rotating pair, the front end of the second arm (8) is rotatably provided with the clamping plate (5), the rotating center is positioned at the position, close to the upper end, of the back surface of the clamping plate (5), the second arm (8) and the first rotating shaft (10.2) form a rotating pair, the front end of the third arm (21) is rotatably provided with the clamping plate (5), the rotating center is positioned at the position, close to the upper end, the third arm (21) and the second rotating shaft (10.5) form a rotating pair, a clamping plate (5) is rotatably arranged at the front end of a fourth arm (6), the rotating center is positioned at the position, close to the upper end, of the back surface of the clamping plate (5), the fourth arm (6) and a second rotating shaft (10.5) form a rotating pair, the right end of a first arm (18) and the upper end of a second connecting rod (15) form a rotating pair, the right end of a third arm (21) and the position, close to the lower end, of the second connecting rod (15) form a rotating pair, so that the first arm (18), the third arm (21), the second connecting rod (15) and a turning frame (10) form a parallelogram structure, the first arm (18) and the third arm (21) can synchronously swing, the left end of the second arm (8) and the upper end of the first connecting rod (19) form a rotating pair, the left end of the fourth arm (6) and the position, close to the lower end, of the first connecting rod (19) form a rotating pair, so that the second arm (8), the fourth arm (6), the first connecting rod (19) and the turning frame (10) form a parallelogram structure, so that the second arm (8) and the fourth arm (6) can synchronously swing;

the lower end of a fixed terminal (20) is rotatably connected with a terminal shaft (10.4), the upper end of a first spring (16.1) and a first connecting rod (19) are close to the upper end to form a rotating pair, the lower end of the first spring (16.1) and the fixed terminal (20) form a rotating pair through a spring terminal (17), so that the first connecting rod (19) always tends to move downwards under the action of the pulling force of the first spring (16.1), the upper end of a second spring (16.2) and a second connecting rod (15) are close to the upper end to form a rotating pair through a spring terminal (17), the lower end of the second spring (16.2) and the fixed terminal (20) form a rotating pair through a spring terminal (17), so that the second connecting rod (15) always tends to move downwards under the action of the pulling force of the second spring (16.2);

the lower end of a hydraulic cylinder (4) is fixedly connected with a fixing plate (10.9), the upper end of the hydraulic cylinder (4) is fixedly connected with a transverse groove rod (7), the left side of the transverse groove rod (7) is provided with an inclined chute with a lower left part and a higher right part, the right side of the transverse groove rod (7) is provided with an inclined chute with a higher left part and a lower right part, the lower end of a first connecting rod (19) can slide in the chute on the left side of the transverse groove rod (7), the lower end of a second connecting rod (15) can slide in the chute on the right side of the transverse groove rod (7), a first hydraulic pipe (14.1) communicates one oil port at the front end of a hydraulic pump (12) with the hydraulic cylinder (4) in a first clamping mechanism, and a second hydraulic pipe (14.2) communicates the other oil port at the front end of the hydraulic pump (12) with the hydraulic cylinder in a second clamping mechanism;

the right end of the swing rod (22) is rotatably connected with the connecting lug (10.1) to enable the swing rod (22) to swing up and down, the right end of the pull ring rod (23) and the left end of the swing rod (22) form a revolute pair, a first rotating wheel (23.1) and a second rotating wheel (23.2) are arranged at positions, close to the middle, of the pull ring rod (23), the first rotating wheel (23.1) and the second rotating wheel (23.2) are symmetrically installed on two sides of the pull ring rod (23) and form a revolute pair with the pull ring rod (23), and a pull ring (23.3) convenient for holding force is arranged at the left end of the pull ring rod (23).

4. The duplex medical oxygen cylinder cart according to claim 1, wherein: a bottom panel (9.1), a top panel (9.2), a left rotating shaft (9.3), a right rotating shaft (9.4) and a limiting block (9.5) are arranged on a locking plate (9) in the locking mechanism, a cavity structure with an opening at the upper end is arranged between the bottom panel (9.1) and the top panel (9.2), the limiting block (9.5) is arranged at the middle position of the upper end of the cavity structure, a long hole is arranged at the central position of the bottom panel (9.1), a round hole arranged at the central position of the top panel (9.2) is coincided with the center of the long hole on the bottom panel (9.1), and a left rotating shaft (9.3) and a right rotating shaft (9.4) are also arranged between the bottom panel (9.1) and the top panel (9.2);

an opening surface (24.1) is arranged on the right side of the upper end of the left hook plate (24), a limiting surface (24.2) is arranged on the lower side of the opening surface (24.1), an arc-shaped clamping edge (24.3) is arranged on the lower side of the limiting surface (24.2), and a spring surface (24.4) is arranged at the lower end of the left hook plate (24); the structure of the right hook plate (25) is bilaterally symmetrical to that of the left hook plate (24), and the right hook plate (25) is also provided with an opening surface, a limiting surface, a clamping edge and a spring surface;

the lower end of the left hook plate (24) is rotatably connected with the left rotating shaft (9.3), and a left spring piece (26.1) is arranged between a spring surface (24.4) at the lower end of the left hook plate (24) and the bottom side inside the lock plate (9), so that the left hook plate (24) rotates rightwards under the action of the elasticity of the left spring piece (26.1) until a limiting surface (24.2) of the left hook plate (24) presses a limiting block (9.5) in the lock plate (9); the lower end of the right hook plate (25) is rotatably connected with the right rotating shaft (9.4), and the right spring piece (26.2) is arranged between the spring surface at the lower end of the right hook plate (25) and the bottom side of the inside of the lock plate (9), so that the right hook plate (25) rotates leftwards under the action of the elasticity of the right spring piece (26.2) until the limiting surface of the right hook plate (25) presses the limiting block (9.5) in the lock plate (9);

a locking mechanism is fixedly arranged on the right lock frame (1.2) through four screws, and a locking mechanism is fixedly arranged on the left lock frame (1.3) through four screws.

5. The duplex medical oxygen cylinder cart according to claim 1, wherein: in an initial state, the first clamping mechanism is inclined backwards and abuts against the frame (1), the left baffle (10.6) compresses the second stop lever (1.5), the right baffle (10.7) compresses the first stop lever (1.4), the conical insertion rod (10.3) penetrates through a gap between the left hook plate (24) and the right hook plate (25) through a long hole in the bottom plate (9.1), and the clamping edge (24.3) of the left hook plate (24) and the clamping edge of the right hook plate (25) clamp the bottom circle of the conical structure, so that the position locking of the first clamping mechanism is realized; the second clamping mechanism leans backwards to abut against the frame (1), and the position of the second clamping mechanism is locked by a set of locking mechanism, and at the moment, a left baffle and a right baffle of the roll-over stand in the second clamping mechanism respectively press a fourth baffle rod (1.7) and a third baffle rod (1.6); meanwhile, the pressure release valve (12.2) is in a closed state, hydraulic cylinders in the first clamping mechanism and the second clamping mechanism are in a contracted state, the two transverse groove rods are in the lowest positions, and clamping plates (5) in the first clamping mechanism and the second clamping mechanism are opened outwards; the first rotating wheel (23.1) and the second rotating wheel (23.2) are arranged longitudinally and are placed between the opening surface (24.1) of the left hook plate (24) and the opening surface of the right hook plate (25).

6. The duplex medical oxygen cylinder cart according to claim 1, wherein: when the first clamping mechanism loads the oxygen cylinder (11): firstly, holding a pull ring (23.3) by hand and rotating for 90 degrees to enable a first rotating wheel (23.1) and a second rotating wheel (23.2) to be in a horizontal row state and respectively prop a left hook plate (24) and a right hook plate (25) to two sides, namely, the left hook plate (24) rotates leftwards and the right hook plate (25) rotates rightwards, so that a clamping edge (24.3) of the left hook plate (24) and a clamping edge of the right hook plate (25) are released from clamping a conical structure on a conical insertion rod (10.3); secondly, the pull ring (23.3) is pushed forward to enable the conical insertion rod (10.3) to be separated from the lock plate (9), then the left hook plate (24) rotates rightwards under the action of the elasticity of the left spring piece (26.1) until the limiting surface (24.2) of the left hook plate (24) presses the limiting block (9.5) in the lock plate (9), and the right hook plate (25) rotates leftwards under the action of the elasticity of the right spring piece (26.2) until the limiting surface of the right hook plate (25) presses the limiting block (9.5); the roll-over stand (10) is rotated forwards until the roll-over stand is in a vertical state, at the moment, the two front supporting wheels (3) contact the ground, the carrier is pushed forwards, and the oxygen cylinder (11) is in contact with the cambered surface structure on the front side of the roll-over stand (10); fourthly, the reversing valve (12.3) is pulled rightwards, so that the hydraulic pump (12) is communicated with the hydraulic cylinder (4) in the first clamping mechanism through the first hydraulic pipe (14.1), and meanwhile, the communication between the hydraulic pump (12) and the hydraulic cylinder in the second clamping mechanism is cut off; repeatedly stepping down the pedal (12.1) to enable hydraulic oil in the hydraulic pump (12) to enter the hydraulic cylinder (4) through the first hydraulic pipe (14.1) to extend gradually, so that the transverse groove rod (7) moves upwards, and the first connecting rod (19) and the second connecting rod (15) drive the first arm (18), the second arm (8), the third arm (21) and the fourth arm (6) to swing downwards until the four clamping plates (5) clamp the oxygen cylinder (11); sixthly, pulling the pull ring (23.3) backwards to enable the roll-over stand (10) to turn over backwards until the cone insertion rod (10.3) is inserted into the locking mechanism and then locked; seventhly, the pull ring (23.3) is rotated by 90 degrees, so that the first rotating wheel (23.1) and the second rotating wheel (23.2) are arranged longitudinally and are placed between the opening surface (24.1) of the left hook plate (24) and the opening surface of the right hook plate (25); so that the two front wheels leave the ground, the two wheels (2) and the three universal casters (13) contact the ground, and the first clamping mechanism finishes loading the oxygen cylinder (11);

when the second clamping mechanism loads the oxygen cylinder, the reversing valve (12.3) needs to be pulled leftwards in the fourth step, so that the hydraulic pump (12) is communicated with a hydraulic cylinder in the second clamping mechanism through a second hydraulic pipe (14.2), meanwhile, the communication between the hydraulic pump (12) and the hydraulic cylinder in the first clamping mechanism is cut off, and other process steps are the same as the loading process of the first clamping mechanism; when the first clamping mechanism and the second clamping mechanism are both in a locking state, the carrier can be moved to a target position.

7. The duplex medical oxygen cylinder cart according to claim 1, wherein: when the first clamping mechanism unloads the oxygen cylinder (11): firstly, holding a pull ring (23.3) by hand and rotating for 90 degrees to enable a first rotating wheel (23.1) and a second rotating wheel (23.2) to be in a transverse arrangement state and respectively prop a left hook plate (24) and a right hook plate (25) to two sides, and releasing the clamping of a conical structure on a conical insertion rod (10.3) by a clamping edge (24.3) of the left hook plate (24) and a clamping edge of the right hook plate (25); secondly, the pull ring (23.3) is pushed forwards to enable the conical insertion rod (10.3) to be separated from the lock plate (9); the overturning frame (10) is rotated forwards until the overturning frame becomes a vertical state, at the moment, the two front supporting wheels (3) contact the ground, and the lower end of the oxygen cylinder (11) also contacts the ground; fourthly, the reversing valve (12.3) is pulled rightwards, so that the hydraulic pump (12) is communicated with the hydraulic cylinder (4) in the first clamping mechanism through the first hydraulic pipe (14.1), and meanwhile, the communication between the hydraulic pump (12) and the hydraulic cylinder in the second clamping mechanism is cut off; after the pressure release valve (12.2) is stepped downwards, the first connecting rod (19) and the second connecting rod (15) move downwards under the action of the tension of the first spring (16.1) and the second spring (16.2), so that the transverse groove rod (7) moves downwards, the hydraulic cylinder (4) contracts, hydraulic oil in the hydraulic cylinder (4) flows back to the hydraulic pump (12), and meanwhile, the first arm (18), the second arm (8), the third arm (21) and the fourth arm (6) simultaneously swing upwards to realize the opening of the four clamping plates (5), and the unloading of the oxygen bottle (11) in the first clamping mechanism can be finished by pulling the transport vehicle backwards;

when the second clamping mechanism unloads the oxygen cylinder, the reversing valve (12.3) needs to be pulled leftwards in the fourth step, so that the hydraulic pump (12) is communicated with the hydraulic cylinder in the second clamping mechanism through the second hydraulic pipe (14.2), meanwhile, the communication between the hydraulic pump (12) and the hydraulic cylinder in the first clamping mechanism is cut off, and other process steps are the same as the unloading process of the first clamping mechanism.