A method for transferring oxygen and acetylene cylinders by a two-wheeled vehicle

Abstract

This invention relates to a method for transferring oxygen and acetylene cylinders using a two-wheeled vehicle. The upper vehicle is positioned with its rear end supported on the ground under gravity. The acetylene cylinder is secured to the lower vehicle, which is then moved to a predetermined position below the upper vehicle. The oxygen cylinder is then secured to the upper vehicle. The lower vehicle is detachably suspended below the upper vehicle, raising its rear end so that the two-wheeled vehicle is supported only by its wheels. After moving the two-wheeled vehicle to the predetermined location, the upper and lower vehicles are separated by a predetermined distance. The oxygen cylinder is removed from the upper vehicle and stood upright, and the acetylene cylinder is removed from the lower vehicle and stood upright. The oxygen and acetylene from the oxygen cylinders are then delivered via hoses to a combustion gun for ignition. This invention aims to provide a reliable method for transferring oxygen and acetylene cylinders separately using a two-wheeled vehicle, solving the problem of collisions that easily occur when transferring both types of cylinders simultaneously.

Description

[0001] This application is a divisional application of patent number 2022108661011, filed on July 22, 2022, entitled "A method for transferring oxygen and acetylene cylinders by means of a two-body vehicle". Technical Field

[0002] This invention relates to auxiliary tools for axle processing, specifically to a method for transferring oxygen and acetylene cylinders using a twin-engine vehicle. Background Technology

[0003] In the manufacturing of vehicle axles, oxy-fuel cutting technology is used. Oxy-fuel cutting involves burning through an object by igniting oxygen and acetylene. The oxygen and acetylene are stored separately in oxygen and acetylene cylinders. When not in use, these cylinders are stored in designated locations. When needed, they are moved to the work site and stored vertically, separated by a predetermined distance (at least 5 meters). The oxygen and acetylene are then supplied to an ignition gun via hoses for ignition. Currently, the transfer method involves using a handcart to move the cylinders to the destination, then separating them at the predetermined distance. However, this separation distance is estimated, resulting in poor accuracy. Transferring both types of cylinders using the same cart increases the risk of collision and hazard during the transfer process. Summary of the Invention

[0004] The present invention aims to provide a method for transferring oxygen cylinders and acetylene cylinders together using a two-body vehicle, which reliably separates oxygen cylinders and acetylene cylinders, and solves the problem of collisions that easily occur when the two types of cylinders are transferred simultaneously.

[0005] The above technical problems are solved by the following technical solution: A method for transferring oxygen and acetylene cylinders using a dual-body vehicle, characterized in that the dual-body vehicle includes an upper vehicle and a lower vehicle. The upper vehicle includes an upper vehicle body and upper vehicle wheels supporting the upper vehicle body. The front end of the upper vehicle body has two handles distributed in a left-right direction for manual pulling. The upper vehicle has only one row of wheels. The center of gravity of the upper vehicle body is located behind the axle of the upper vehicle wheels. The lower vehicle includes a lower vehicle body and lower vehicle wheels supporting the lower vehicle body. The front end of the lower vehicle body has two handles distributed in a left-right direction for manual pulling. The lower vehicle has only one row of wheels. The center of gravity of the lower vehicle body after loading the oxygen or acetylene cylinder is located behind the axle of the lower vehicle wheels. The upper vehicle body tilts when its rear end is supported on the ground. The tilt angle is greater than the tilt angle when the rear end of the lower vehicle is supported on the ground; this ensures that the upper vehicle is supported on the ground at its rear end under gravity. The acetylene cylinder is fixed to the lower vehicle, with the lower vehicle positioned in front of the upper vehicle. The lower vehicle is moved towards the upper vehicle to a designated position below it. The oxygen cylinder is then fixed to the upper vehicle. The lower vehicle is detachably suspended below the upper vehicle, raising the rear end of the upper vehicle so that the entire vehicle is supported on the ground only by its wheels. The vehicle is moved to a designated location by pulling the upper vehicle handle or the lower vehicle, separating the upper and lower vehicles by a predetermined distance to ensure the oxygen and acetylene cylinders are separated. The oxygen cylinder is removed from the upper vehicle and stood upright, and the acetylene cylinder is removed from the lower vehicle and stood upright. The oxygen and acetylene from the oxygen cylinders are then transported via hoses to the combustion gun for ignition. This method ensures good safety when transferring the oxygen and acetylene cylinders.

[0006] Preferably, the upper and lower sections are connected by a cable; when the upper and lower sections separate, the cable is extended, and the distance between them is greater than the safe distance required for ignition of the oxygen in the oxygen cylinder and the acetylene in the acetylene cylinder. This allows for easy verification that the oxygen and acetylene cylinders have been separated to the required distance.

[0007] Preferably, the upper vehicle body has an upper hook on the left side and the lower vehicle body has a lower hook on the right side. One end of the cable has a first connecting sleeve that hooks onto the upper hook, and the other end has a second connecting sleeve that hooks onto the lower hook. This makes it convenient to connect and disconnect the cable. When in use, the cable can be reconnected after the upper and lower vehicles are disassembled, which can avoid the cable interfering with the connection between the upper and lower vehicles.

[0008] Preferably, the rear end of the lower vehicle body is equipped with a lower auxiliary wheel, an upper auxiliary wheel, and a suspension rod, while the rear end of the upper vehicle body is equipped with a suspension ring. The specific method for connecting the lower and upper vehicles is as follows: the upper vehicle body is positioned with its rear end supported on the ground under gravity, the rear end of the lower vehicle abuts against the front of the barrier frame, and the lower vehicle body is positioned with its lower auxiliary wheel supported on the ground under gravity. The lower vehicle is pushed back until the suspension rod passes through the suspension ring. When the lower vehicle reverses, it contacts the upper vehicle body via the upper auxiliary wheel, lifting the rear end of the upper vehicle body, and then detachably connects the front end of the lower vehicle body to the front end of the upper vehicle body. This method saves effort when assembling the upper and lower vehicles and when removing the lower vehicle from under the upper vehicle. It also makes fixing the rear ends of the upper and lower vehicles together convenient and effortless.

[0009] Preferably, when the upper vehicle body is tilted with its rear end lower, it is supported on the ground by the suspension ring. When the lower vehicle is retracted from its position with the lower auxiliary wheel supported on the ground until the upper auxiliary wheel abuts against the suspension ring, the suspension rod passes through the suspension ring. This allows for a short distance between the rear ends of the upper and lower vehicles when they are assembled together, resulting in a compact structure.

[0010] Preferably, the front end of the lower vehicle body is tied to the upper vehicle body with straps and connected together.

[0011] As another preferred embodiment, the front end of the upper vehicle body is provided with a hook, and the front end of the lower vehicle body is hinged to a boom via a horizontal hinge shaft. The upper end of the boom is provided with a lifting ring, allowing the front end of the lower vehicle body to close with the front end of the upper vehicle body. The boom is rotated around the horizontal hinge shaft until the lifting ring hooks onto the hook. When the lifting ring hooks onto the hook, the front end of the lower vehicle body is suspended from the front end of the upper vehicle body. Installation and disassembly are quick and reliable.

[0012] Preferably, the mounting includes a cylinder erecting mechanism. Oxygen cylinders are mounted on the mounting via this mechanism. Each oxygen cylinder has a support cylinder at its lower end. The cylinder erecting mechanism includes a base connected to the lower end of the oxygen cylinder and a clamp fixed to the upper end of the cylinder. A pull rope is connected to the clamp. The upper end of the base has a connecting protrusion. One side of the lower end of the base has a support block, and the other end has a support roller. When the base is in an upright position, it is supported simultaneously by the support block and the support roller. The support cylinder of the oxygen cylinder is sleeved on... The upper end of the connecting protrusion is held by the clamp and placed horizontally on the upper vehicle body for transfer. The method for removing the oxygen cylinder from the upper vehicle is as follows: the upper vehicle body is positioned with its rear end supported on the ground. The oxygen cylinder is lowered until it is supported only on the ground by the support rollers. The oxygen cylinder is then pulled by a rope, causing it to stand upright by rotating around the support rollers. Rotation of the oxygen cylinder stops when the support block on the base supports it on the ground. The oxygen cylinder remains upright under its own weight. This method of standing the oxygen cylinder is labor-saving.

[0013] Preferably, the upper vehicle also includes a gas cylinder lifting plate. The supporting rollers are cylindrical. The lower end of the upper vehicle body has a thickened section, forming a blocking step between the thickened section and the upper surface of the upper vehicle body. The upper surface of the upper vehicle body has a lateral limiting recess. The gas cylinder lifting plate has an arc-shaped support plate located within the lateral limiting recess. The radius of the inner circumference of the arc-shaped support plate is the same as the radius of the supporting roller. The connection between the gas cylinder lifting plate and the arc-shaped support plate abuts against the corner formed by the limiting step and the thickened section. An angle is formed between the gas cylinder lifting plate and the upper surface of the thickened section. The supporting rollers are supported on the arc-shaped support plate and are coaxial with the arc-shaped support plate. The supporting rollers are prevented from moving laterally by the limiting recess. When the rear end of the upper vehicle body is supported on the ground, the blocking step can prevent the supporting rollers from moving downward on the upper vehicle body. When the plate swings from the contact point between the gas cylinder lifting plate and the limiting step to a flat position on the thickened section, the arc-shaped support plate lifts the support rollers, thus lifting the lower end of the oxygen cylinder. The oxygen cylinder is supported only by the support rollers. When the oxygen cylinder moves downward, it can drive the support rollers to move away from the arc-shaped support plate and onto the gas cylinder lifting plate. The process of moving the oxygen cylinder from the upper vehicle to the ground supported by the support rollers is as follows: Pressing down on the gas cylinder lifting plate causes it to swing from the contact point between the gas cylinder lifting plate and the limiting step to a flat position on the thickened section. During this process, the upper vehicle body is in a state where the rear end is supported on the end face. The arc-shaped support plate lifts the support rollers, thus lifting the lower end of the oxygen cylinder. Pulling the rope causes the oxygen cylinder to move down until the support rollers move away from the arc-shaped support plate and onto the gas cylinder lifting plate. The oxygen cylinder continues to move down until it is supported by the support rollers on the ground. It can ensure that the oxygen cylinder is reliably and conveniently fixed to the vehicle body to prevent displacement, and it can also be easily removed from the vehicle.

[0014] Preferably, at least one lateral end of the cylinder lifting plate extends beyond the limiting recess. The upper end of the oxygen cylinder is secured to the upper vehicle body via a pull rope, and the upper end of the acetylene cylinder is secured to the lower vehicle body via a pull rope. When the cylinder lifting plate is pressed down, the portion of the cylinder lifting plate extending laterally beyond the limiting recess is pressed down. This prevents the oxygen cylinder from colliding with the user when it is removed, ensuring good safety.

[0015] Preferably, the upper vehicle wheel axle consists of two laterally distributed axle halves. Each of the upper vehicle wheels, located on either side of the vehicle body, is connected to one of the axle halves, forming a gas cylinder receiving channel between the two axle halves. This improves structural compactness and reduces the radius of the upper vehicle wheels.

[0016] Preferably, the center of gravity of the upper vehicle body after the oxygen or acetylene cylinder is installed is located in front of the upper vehicle's wheel axle. After the rear end of the lower vehicle body is connected to the rear end of the upper vehicle body, the oxygen cylinder is placed on the upper vehicle body. Under the weight of the upper vehicle body and the gravity of the oxygen cylinder, the upper vehicle body rotates forward around the upper vehicle's wheel axle until its front end abuts against the front end of the lower vehicle body, thus detachably connecting the front ends of the upper and lower vehicles together. This reduces effort when securing the front ends of the upper and lower vehicles together.

[0017] Preferably, the suspension ring includes two booms distributed in the left-right direction, the upper ends of which are connected to the upper vehicle body, and crossbars whose two ends are correspondingly connected to the lower ends of the two booms. The upper surface of the crossbar is an arc surface. After the rear ends of the upper and lower vehicles are connected together, during the process of closing and connecting the front ends, the suspension rods will support the rotation within the suspension ring. This technical solution can make the rotation of the cover less strenuous.

[0018] The beneficial effects of this invention are: acetylene cylinders and oxygen cylinders will not collide with each other when transferred in the same vehicle, ensuring good safety; they can be reliably and accurately separated at the set distance; fixing the cylinders is simple and reliable; and unloading and standing the cylinders off the vehicle is convenient and labor-saving. Attached Figure Description

[0019] Figure 1 Rear view diagram of the transfer of oxygen and acetylene cylinders using a two-body vehicle.

[0020] Figure 2 Right view of the two-body vehicle in Embodiment 1;

[0021] Figure 3 for Figure 2 A magnified view of a portion of point A;

[0022] Figure 4 This is a diagram showing the situation when boarding and alighting are separated.

[0023] Figure 5 A diagram illustrating the preparation for assembling the upper and lower sections of the vehicle together;

[0024] Figure 6 This is a diagram showing the connection between the rear ends of the boarding and alighting sections.

[0025] Figure 7 This is a schematic diagram of the two-body vehicle in Example 2;

[0026] Figure 8 for Figure 7 A magnified view of a portion of point B;

[0027] Figure 9 This is a diagram showing an oxygen cylinder standing upright. The term "cylinder" refers to both oxygen cylinders and acetylene cylinders.

[0028] Figure 10 This is a partial top view of the catamaran vehicle in Embodiment 2;

[0029] Figure 11 A partial schematic diagram of Embodiment 3 of the present invention.

[0030] In the diagram: 1. Upper vehicle body; 2. Upper vehicle wheel; 3. Upper vehicle handle; 4. Wheel axle half; 5. Suspension ring; 6. Crane arm; 7. Crossbar; 8. Upper surface of the crossbar; 9. Lower vehicle body; 10. Lower vehicle wheel; 11. Lower vehicle handle; 12. Lower vehicle wheel axle; 13. Upper auxiliary wheel; 14. Suspension rod; 15. Cable; 16. Oxygen cylinder; 17. Acetylene cylinder; 18. Upper vehicle hook; 19. Lower vehicle hook; 20. Ground; 21. Barrier frame; 22. 23. Straps, 24. Support cylinder, 25. Base, 26. Clamp, 27. Pull rope, 28. Connecting protrusion, 29. Support block, 30. Support roller, 31. Gas cylinder lifting plate, 32. Thickened section, 33. Blocking step, 34. Lateral limiting recess, 35. Arc-shaped support plate, 40. Connection between gas cylinder lifting plate and arc-shaped support plate, 36. Hook, 37. Horizontal hinge shaft, 38. Lifting rod, 39. Lifting ring, 41. Insertion hole, 42. Anti-detachment pin, 43. Gas cylinder receiving channel. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0032] Example 1, see Figures 1 to 6 A method for transferring oxygen and acetylene cylinders using a two-body vehicle, which includes an loading and unloading section.

[0033] The vehicle consists of a vehicle body 1 and two wheels 2 supporting the vehicle body. The two wheels are conveniently located on the left and right sides of the vehicle body. Two handles 3 are located at the front of the vehicle body, distributed horizontally. The center of gravity of the vehicle body is located behind the wheel axles, allowing the rear end of the vehicle body to rotate downwards and support the ground in a free state. The handles are for manual pulling. The wheel axles consist of two horizontally distributed axle halves 4. Each wheel on each side of the vehicle body is connected to one axle half, forming a gas cylinder receiving channel 43 between the two axle halves. A suspension ring 5 is located below the rear end of the vehicle body. When the vehicle body is tilted with its rear end lowered, it is supported on the ground by the suspension ring. The suspension ring includes two booms 6 distributed in the left-right direction, the upper ends of which are connected to the upper vehicle body, and a crossbar 7 whose two ends are connected to the lower ends of the two booms respectively. The upper surface 8 of the crossbar is an arc surface.

[0034] The dismount consists of a dismount body 9 and dismount wheels 10 supporting the dismount body. Two dismount handles 11, distributed horizontally, are located at the front of the dismount body for manual pulling. There is only one row of dismount wheels. The center of gravity of the dismount body after the acetylene cylinder is installed is located behind the axle 12 of the dismount wheels. A lower auxiliary wheel 13 is located at the rear of the dismount body, supporting it on the ground when the dismount body tilts backward. The tilt angle of the upper vehicle body when its rear end is supported on the ground is greater than that of the lower vehicle body when its rear end is supported on the ground. An upper auxiliary wheel 14 and a suspension rod 15 are located at the rear of both the upper and lower vehicles. The left and right sections of the suspension rod have insertion holes 41.

[0035] The upper and lower vehicles are connected by a cable 16. When the upper and lower vehicles are separated and the cable is extended, the distance between them is greater than the safe distance required for the oxygen in the oxygen cylinder 17 and the acetylene in the acetylene cylinder 18 to ignite. The upper vehicle has an upper hook 19 on its left side and an lower hook 20 on its right side. One end of the cable has a first connecting sleeve that hooks onto the upper hook and the other end has a second connecting sleeve that hooks onto the lower hook.

[0036] The method for transporting gas cylinders using a twin-car unit is as follows: the upper car body is positioned with its rear end supported on the ground by a suspension ring under the influence of gravity. The rear end of the upper car body abuts against the front of a barrier frame 22 (such as a wall) fixed to the ground 21. The lower car body is positioned with its rear end supported on the ground by a lower auxiliary wheel under the influence of gravity. The acetylene cylinder is placed on the lower car body, which is still in a position with its rear end supported on the ground. The lower car body is positioned in front of the upper car body. The upper car body is moved towards the upper car body, i.e., the lower car body is pushed backward. When the lower car body moves backward, it contacts the upper car body through the upper auxiliary support wheel and lifts the rear end of the upper car body. The lower car body stops moving backward when the upper auxiliary wheel abuts against the suspension ring. At this time, the suspension rod is inserted into the suspension ring. The anti-detachment pin 42 is inserted into the insertion hole to prevent the suspension rod from falling out of the suspension ring when the lower car body moves forward. The oxygen cylinder is fixed to the upper vehicle body. At this time, the center of gravity of the upper vehicle body after the oxygen cylinder is installed is located in front of the upper vehicle wheel axle. Under the action of gravity, the front end of the upper vehicle body rotates downward, causing the upper vehicle body to abut against the lower vehicle body. The front end of the lower vehicle body is tied to the front end of the upper vehicle body with strap 23 to achieve a detachable connection. Press down on the front end of the invention until the lower vehicle wheel lifts off the ground. At this time, the invention is only supported on the ground by the upper vehicle wheel, and the rear end of the lower vehicle is suspended in the suspension ring through the suspension rod and thus suspended from the upper vehicle body. Below, pull the handle of the vehicle to move the invention to the designated gas cutting location, thereby enabling the transfer of the oxygen cylinder and acetylene cylinder to the gas cutting location. Untie the straps, remove the oxygen cylinder so that it stands upright. At this time, under the action of gravity, the rear end of the vehicle is supported on the end face. Pull the vehicle forward until the cable is in an extended state, remove the oxygen cylinder from the vehicle and stand it upright. At this time, the separation distance between the oxygen cylinder and the acetylene cylinder reaches the safety requirement distance of more than 5 meters. Thus, the oxygen and acetylene in the oxygen cylinder can be transported to the combustion gun through the hose for ignition.

[0037] Example 2 differs from Example 1 in that:

[0038] See Figures 7 to 9The upper vehicle includes a cylinder lifting mechanism. A support cylinder 24 is located at the lower end of the oxygen cylinder, providing support when the cylinder is upright. The cylinder lifting mechanism includes a base 25 connected to the lower end of the oxygen cylinder and a clamp 26 fixed to the upper end. A pull rope 27 is connected to the clamp. A connecting protrusion 28, passing through the support cylinder, is located at the upper end of the base. A support block 29 is located on one side of the lower end of the base, and a support roller 30 is located at the other end. The base is supported simultaneously by the support block and the support roller. The upper vehicle includes a cylinder lifting plate 31. The support roller is cylindrical. A thickened section 32 is located at the lower end of the upper vehicle body, forming a blocking step 33 between the thickened section and the upper surface of the upper vehicle body. A lateral limiting recess 34 is located on the upper surface of the upper vehicle body. The lateral limiting recess is arc-shaped, and the portion where the blocking step meets the lateral limiting recess is arc-shaped, and both are located on the same circle. The gas cylinder lifting plate is equipped with an arc-shaped support plate 35 located within the lateral limiting recess. The radius of the inner circumference of the arc-shaped support plate is the same as the radius of the supporting roller, and the radius of the outer circumference is the same as the radius of the lateral limiting recess. The connection point 40 between the gas cylinder lifting plate and the arc-shaped support plate abuts against the corner formed by the limiting step and the thickened section, forming an angle between the upper surface of the gas cylinder lifting plate and the thickened section. The supporting roller rests on the arc-shaped support plate and is coaxial with it. The arc-shaped support plate fits into the lateral limiting recess, preventing the supporting roller from moving laterally. When the rear end of the upper vehicle body is supported on the ground, the blocking step prevents the supporting roller from moving downward on the upper vehicle body. When the cylinder lifting plate swings from the contact point between itself and the limiting step to a horizontal position on the thickened section, the arc-shaped support plate lifts the support rollers, thus raising the lower end of the oxygen cylinder. The oxygen cylinder is supported only by the support rollers. As the oxygen cylinder moves downward, it drives the support rollers to move away from the arc-shaped support plate and onto the cylinder lifting plate. The two lateral ends of the cylinder lifting plate extend beyond the limiting recess.

[0039] The oxygen cylinder is mounted on the upper vehicle in the following manner: the support cylinder of the oxygen cylinder is sleeved on the connecting protrusion, the support roller of the address is pressed on the arc-shaped support plate and the arc-shaped support plate is pressed into the lateral limiting recess, the upper end of the oxygen cylinder is held by the clamp and placed on the upper vehicle body and fixed to the upper vehicle body by the pull rope. The method for removing the oxygen cylinder from the vehicle is as follows: Press down on the cylinder lifting plate with your foot to make the cylinder lifting plate swing around the contact point between the cylinder lifting plate and the limiting step and place it flat on the thickened section. During this process, the vehicle body is in a state where the rear end is supported on the end face. The arc-shaped support plate lifts the support roller, thereby lifting the lower end of the oxygen cylinder. Pull the rope to move the oxygen cylinder down until the support roller moves away from the arc-shaped support plate and onto the cylinder lifting plate. Continue to move the oxygen cylinder down until the support roller supports it on the ground. Continue to pull the oxygen cylinder by pulling the rope to make the oxygen cylinder rotate around the support roller as an axis and stand up. Stop rotating the oxygen cylinder when the support block on the base supports it on the ground. The oxygen cylinder remains in an upright state under its own weight.

[0040] Example 3 differs from Example 2 in that:

[0041] See Figure 10 The upper vehicle body has a hook 36 at its front end, and the lower vehicle body has a boom 38 hinged to its front end via a horizontal hinge shaft 37. The upper end of the boom has a lifting ring 39, which hooks onto the hook to suspend the front of the lower vehicle body from the front end of the upper vehicle body. This technical solution replaces the straps for fixing.

[0042] For ease of description, the above describes the process of loading oxygen cylinders onto the upper vehicle and acetylene cylinders onto the lower vehicle. Conversely, loading acetylene cylinders onto the upper vehicle and oxygen cylinders onto the lower vehicle is the same, which is equivalent to the above technical solution.

Claims

1. A method of transferring oxygen cylinders acetylene cylinders by a two-wheeled vehicle, characterized in that, The twin-hulled vehicle includes an upper vehicle and an lower vehicle. The upper vehicle includes an upper vehicle body and upper vehicle wheels supporting the upper vehicle body. The front end of the upper vehicle body has two handles distributed in a left-right direction for manual pulling. The upper vehicle has only one row of wheels, and the center of gravity of the upper vehicle body is located behind the axle of the upper vehicle wheels. The lower vehicle includes a lower vehicle body and lower vehicle wheels supporting the lower vehicle body. The front end of the lower vehicle body has two lower vehicle handles distributed in a left-right direction for manual pulling. The vehicle has only one row of wheels. The center of gravity of the lower vehicle, after the oxygen or acetylene cylinder is installed, is located behind the axle of the lower vehicle's wheels. The tilt angle of the upper vehicle when its rear end is supported on the ground is greater than that of the lower vehicle when its rear end is supported on the ground. This ensures that the upper vehicle is in a position where its rear end is supported on the ground under gravity. The acetylene cylinder is fixed to the lower vehicle, and the lower vehicle is positioned in front of the upper vehicle. The lower vehicle moves towards the upper vehicle to a predetermined position below the upper vehicle. The oxygen cylinder is then fixed to the upper vehicle. The lower vehicle is detachably suspended below the upper vehicle. The rear end of the upper vehicle body is raised so that the twin-body vehicle is supported on the ground only by the upper vehicle wheels. Pulling the upper vehicle handle or the lower vehicle body moves the twin-body vehicle to a designated location, separating the upper and lower vehicles by a predetermined distance, thus ensuring the required separation distance between the oxygen and acetylene cylinders. The oxygen cylinder is then removed from the upper vehicle and stood upright, and the acetylene cylinder is removed from the lower vehicle and stood upright. The oxygen and acetylene from the oxygen cylinders are then transported via hoses to a combustion gun for ignition. The rear end of the lower vehicle body is equipped with a lower auxiliary wheel, an upper auxiliary wheel, and a suspension rod. The upper vehicle body is provided with a suspension ring at the lower rear end. The specific method for connecting the lower vehicle and the upper vehicle is as follows: the upper vehicle body is in a state where its rear end is supported on the ground under the action of gravity, the rear end of the lower vehicle abuts against the front of the barrier frame, and the lower vehicle body is in a state where its lower auxiliary wheel is supported on the ground under the action of gravity. The lower vehicle is pushed back until the suspension rod passes through the suspension ring. When the lower vehicle moves backward, it contacts the upper vehicle body through the upper auxiliary wheel and lifts the rear end of the upper vehicle body, and the front end of the lower vehicle body is detachably connected to the front end of the upper vehicle body.

2. The method for transferring oxygen and acetylene cylinders using a two-body vehicle according to claim 1, characterized in that, The boarding and alighting sections are connected by a cable; when the boarding and alighting sections separate, they are separated until the cable is extended. At this point, the distance between the boarding and alighting sections is greater than the safe distance required for the oxygen in the oxygen cylinder and the acetylene in the acetylene cylinder to ignite.

3. A method for transferring oxygen and acetylene cylinders using a two-body vehicle according to claim 1 or 2, characterized in that, When the upper vehicle body is tilted with its rear end lower, it is supported on the ground by the suspension ring. When the lower vehicle body is supported on the ground by the lower auxiliary wheel and moves back to the point where the upper auxiliary wheel abuts against the suspension ring, the suspension rod passes through the suspension ring.

4. A method for transferring oxygen and acetylene cylinders using a dual-body vehicle according to claim 1 or 2, characterized in that, The front end of the lower vehicle body is tied to the upper vehicle body with straps and connected together.

5. A method for transferring oxygen and acetylene cylinders using a two-body vehicle according to claim 1 or 2, characterized in that, The vehicle includes a cylinder erection mechanism. Oxygen cylinders are mounted on the vehicle via this mechanism. Each oxygen cylinder has a support cylinder at its lower end. The cylinder erection mechanism includes a base connected to the lower end of the oxygen cylinder and a clamp fixed to the upper end. A pull rope is connected to the clamp. The upper end of the base has a connecting protrusion. One side of the lower end of the base has a support block, and the other end has a support roller. When the base is in an upright position, it is supported simultaneously by the support block and the support roller. The support cylinder of the oxygen cylinder is sleeved on the connecting mechanism. The oxygen cylinder is placed on the upper vehicle body and moved while being held by the clamp on the upper part of the protrusion. The method for removing the oxygen cylinder from the upper vehicle is as follows: the upper vehicle body is in a state where the rear end is supported on the ground, the oxygen cylinder is moved down to the lower end and supported on the ground only by the support roller, and the oxygen cylinder is lifted by pulling the rope so that the oxygen cylinder is supported on the ground by the support roller and rotates on the support roller as an axis. When the oxygen cylinder is lifted up to the point where the support block on the base supports the ground, the rotation of the oxygen cylinder is stopped, and the oxygen cylinder remains in an upright state under its own weight.

6. A method for transferring oxygen and acetylene cylinders using a two-body vehicle according to claim 5, characterized in that, The vehicle also includes a gas cylinder lifting plate. The supporting rollers are cylindrical. The lower end of the vehicle body has a thickened section, forming a blocking step between the thickened section and the upper surface of the vehicle body. The upper surface of the vehicle body has a lateral limiting recess. The gas cylinder lifting plate has an arc-shaped support plate located within the lateral limiting recess. The radius of the inner circumference of the arc-shaped support plate is the same as the radius of the supporting roller. The connection between the gas cylinder lifting plate and the arc-shaped support plate abuts against the corner formed by the limiting step and the thickened section. An angle is formed between the gas cylinder lifting plate and the upper surface of the thickened section. The supporting roller is supported on the arc-shaped support plate and is coaxial with the arc-shaped support plate. The supporting roller is prevented from moving laterally by the limiting recess. When the rear end of the vehicle body is supported on the ground, the blocking step can prevent the supporting roller from moving downward on the vehicle body. The gas cylinder lifting plate is for the gas cylinder... When the lifting plate swings to a horizontal position on the thickened section, using the contact point between the lifting plate and the limiting step as the fulcrum, the arc-shaped support plate lifts the support rollers, thus lifting the lower end of the oxygen cylinder. The lower end of the oxygen cylinder is supported only by the support rollers. When the oxygen cylinder moves downward, it can drive the support rollers to move away from the arc-shaped support plate and reach the lifting plate. The process of moving the oxygen cylinder from the upper vehicle to the ground supported by the support rollers is as follows: Pressing down on the lifting plate causes it to swing to a horizontal position on the thickened section, using the contact point between the lifting plate and the limiting step as the fulcrum. During this process, the upper vehicle body is in a state where the rear end is supported on the end face. The arc-shaped support plate lifts the support rollers, thus lifting the lower end of the oxygen cylinder. Pulling the rope causes the oxygen cylinder to move downward until the support rollers move away from the arc-shaped support plate and reach the lifting plate. The oxygen cylinder continues to move downward until it is supported by the support rollers on the ground.

7. A method for transferring oxygen and acetylene cylinders using a two-body vehicle according to claim 6, characterized in that, At least one lateral end of the gas cylinder lifting plate extends beyond the limiting recess. The upper end of the oxygen cylinder is tied to the upper vehicle body via the pull rope, and the upper end of the acetylene cylinder is tied to the lower vehicle body via the pull rope. When the gas cylinder lifting plate is pressed down, the portion of the gas cylinder lifting plate that extends laterally beyond the limiting recess is pressed down.

8. A method for transferring oxygen and acetylene cylinders using a two-body vehicle according to claim 1 or 2, characterized in that, The upper vehicle wheel axle consists of two axle halves distributed laterally. Each upper vehicle wheel located on the lateral side of the upper vehicle body is connected to one of the axle halves, and a gas cylinder receiving channel is formed between the two axle halves.

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