Transportation equipment for intelligent welding workshop of liquefied petroleum gas cylinder

Abstract

The transportation equipment for the intelligent liquefied petroleum gas cylinder welding workshop comprises a hollow base, the upper surface of the base is rotationally connected with a fixing frame through a bearing, the fixing frame is slidably connected with a placing plate, and a pressing mechanism is arranged on the placing plate; the pressing mechanism comprises two vertical plates, the vertical plates are fixedly connected with the upper surface of the placing plate, a rotating shaft is rotatably connected between the two vertical plates through a bearing, the rotating shaft is fixedly connected with a pressing block in a penetrating mode, a mounting groove is formed in the bottom wall of the pressing block, and a plurality of sliding pipes are fixedly connected with the bottom wall of the pressing block in a penetrating mode. And a pressure release valve is arranged in the sliding pipe. The liquefied petroleum gas cylinder transport vehicle has the advantages that liquefied petroleum gas cylinders can be pressed and fixed when transported, the situation that the surfaces of the liquefied petroleum gas cylinders are damaged or even fall off due to collision in the transport process is avoided, meanwhile, the liquefied petroleum gas cylinders of different sizes and shapes can be fixed, and the liquefied petroleum gas cylinder transport vehicle is wider in application range and safer.

Description

Technical Field

[0001] The invention relates to the technical field of liquefied petroleum gas cylinder transportation, and in particular to transportation equipment for a liquefied petroleum gas cylinder intelligent welding workshop. Background Art

[0002] Liquefied petroleum gas is a colorless volatile liquid obtained by pressurizing and cooling natural gas or petroleum to liquefy it in an oil refinery. Generally, liquefied petroleum gas is stored in liquefied petroleum gas cylinders when used at home. When hydraulic petroleum gas cylinders are processed, they are often welded in an intelligent welding workshop. After the processing is completed, the processed liquefied petroleum cylinders need to be uniformly loaded and transported. The existing loading method is often manual handling. Due to the certain height of the carriage, manual handling is slow, inefficient, labor-intensive, and relatively dangerous.

[0003] Existing utility model patents, such as a Chinese patent with application number CN201821335276.5, discloses a lifting and rotating device for liquefied petroleum gas cylinders, which is mainly composed of a fixed base, a lifting bracket, a lifting assembly, a lifting drive screw, a lifting drive motor, a lifting platform plate, a rotating assembly, a horizontal limit assembly and other structures. The liquefied petroleum gas cylinders are transported and rotated by the device, avoiding manual handling, thereby greatly improving efficiency and reducing labor intensity.

[0004] In this technical solution, the liquefied petroleum gas cylinders are placed directly on the lifting platform plate, and the liquefied petroleum gas cylinders are not well fixed. During the lifting and rotation process, the liquefied petroleum gas cylinders may collide with each other, resulting in damage to the surface of the liquefied petroleum gas cylinders, and even the possibility of falling, which is quite dangerous. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of poor fixation during the lifting process in the prior art, and to propose a transportation device for a liquefied petroleum gas cylinder intelligent welding workshop.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A transport device for a liquefied petroleum gas cylinder intelligent welding workshop, comprising a hollow base, a fixed frame rotatably connected to the upper surface of the base through a bearing, a placement plate slidably connected to the fixed frame, and a clamping mechanism is arranged on the placement plate;

[0008] The clamping mechanism includes two vertical plates, which are fixedly connected to the upper surface of the placement plate, and a rotating shaft is rotatably connected between the two vertical plates through a bearing. The rotating shaft passes through a clamping block and is fixedly connected to the clamping block. A mounting groove is provided on the bottom wall of the clamping block, and a plurality of sliding tubes are passed through and fixedly connected to the bottom wall of the clamping block. A pressure relief valve is provided in the sliding tube. A liquid storage tank is fixedly connected to the upper surface of the placement plate, and a sliding plate is sealingly and slidably connected to the liquid storage tank. A first electromagnet is fixedly connected to the inner side wall of the liquid storage tank, and a permanent magnet is fixedly connected to the side wall of the sliding plate close to the first electromagnet. A plurality of fixed tubes are passed through and fixedly connected to the top wall of the liquid storage tank, and the sliding tube is sealingly and slidably sleeved with the corresponding fixed tubes. The liquid storage tank is filled with electrorheological fluid.

[0009] Furthermore, the clamping mechanism also includes two functional grooves and two connecting cavities opened in the clamping block, the connecting cavity connects the corresponding functional groove with the installation groove, a conductive plate is sealingly and slidingly connected in the functional groove, a plurality of first springs are fixedly connected between the conductive plate and the functional groove, and a conductive ring is fixedly connected to the top wall of the functional groove.

[0010] Furthermore, a driving mechanism is provided at the base, and the driving mechanism includes a driving motor fixedly connected to the upper surface of the base, the output shaft of the driving motor is rotatably connected to the top wall of the base through a bearing, the output shaft of the driving motor is interference fit with a first gear, the bottom wall of the fixed frame and the top wall of the base are rotatably connected with a lifting screw through a bearing, a section of the lifting screw located in the fixed frame is provided with a thread and is threadably connected to the placement plate, and the rest of the section is a smooth structure, a section of the lifting screw located in the base is interference fit with a second gear, and the second gear is meshed with the first gear.

[0011] Furthermore, the driving mechanism also includes a locking cavity opened in the bottom wall of the fixed frame, and two opposite inner side walls of the locking cavity are fixedly connected to an electric push rod, and the output end of the electric push rod is fixedly connected to a locking block.

[0012] Furthermore, it is characterized in that a locking mechanism is provided in the base, and the locking mechanism includes a cavity opened in the base, a metal plate is sealingly and slidably connected in the cavity, a plurality of second springs are fixedly connected between the metal plate and the inner side wall of the cavity, a second electromagnet is fixedly connected to the inner side wall of the cavity, a sleeve is fixedly connected to the inner side wall of the base, a slider is sealingly and slidably connected in the sleeve, an arc block is fixedly connected to the side wall of the slider located on the outer side of the sleeve, a plurality of connecting pipes are fixedly connected to the base and the sleeve, one end of the connecting pipe extends into the cavity, and the other end extends into the sleeve, and hydraulic oil is filled between the metal plate and the slider.

[0013] Furthermore, the size of the second gear is larger than that of the first gear.

[0014] Furthermore, the cross-sectional area of ​​the metal plate is larger than the cross-sectional area of ​​the sliding block, and a rubber pad is fixedly connected to the side wall of the arc block close to the second gear.

[0015] The present invention has the following advantages:

[0016] 1. When lifting or lowering the liquefied petroleum gas, first make the sliding tube slide, drive the pressing block to rotate, so that the rubber elastic film contacts the liquefied petroleum gas cylinder and presses it. At the same time, the electrorheological fluid is energized and hardened, so that the shape of the rubber elastic film is fixed, and the liquefied petroleum gas cylinder is effectively fixed during lifting and lowering, avoiding collision between liquefied petroleum gas cylinders, resulting in surface damage or even falling, thereby improving the safety of the equipment;

[0017] 2. Through the deformation of the rubber elastic film, it is deformed to fit tightly with the transported liquefied petroleum gas cylinder, and then the shape is fixed, so that the equipment can provide better compression and fixation for liquefied petroleum gas cylinders of different sizes, thus making the equipment more applicable;

[0018] 3. Only after the liquefied petroleum gas cylinder is compressed and the electrorheological fluid is continuously pumped to make the conductive plate contact the conductive ring, the drive motor can be powered on for lifting or rotating, thus ensuring that the liquefied petroleum gas cylinder can be lifted or rotated only after the liquefied petroleum gas cylinder is stably fixed, thus further ensuring the stability of the liquefied petroleum gas cylinder transportation;

[0019] 4. Through the setting of the locking mechanism, when the driving motor is not powered, the metal plate slides and pumps the hydraulic oil into the sliding sleeve, so that the slider is drawn out, driving the arc block to contact the second gear and lock it, so as to avoid the fixed frame from rotating during the stagnation in the air, which may cause danger;

[0020] 5. Through the setting of the electric push rod and the locking block, when the electric push rod is not started and not locked, the lifting screw rotates freely to lift the placement plate. After starting and locking, the lifting screw drives the fixed frame to rotate together, so that the placement plate can be rotated, so that the lifting and rotation can be completed by operating only the driving motor. Compared with the existing technology, the structure is more compact and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a transport device for a liquefied petroleum gas cylinder intelligent welding workshop proposed by the present invention;

[0022] Figure 2 for Figure 1 A partial enlarged view of the

[0023] Figure 3 for Figure 2 A in the enlarged view;

[0024] Figure 4 for Figure 1 The enlarged view of point B in the figure;

[0025] Figure 5 for Figure 1 Cross-sectional view at CC in ;

[0026] Figure 6 for Figure 5 The enlarged view of point D in the figure;

[0027] Figure 7 for Figure 1 The cross-sectional view at EE in FIG.

[0028] Figure 8 This is a circuit connection diagram of a transportation device for a liquefied petroleum gas cylinder intelligent welding workshop proposed by the present invention.

[0029] In the figure: 1 base, 2 fixed frame, 3 placement plate, 4 vertical plate, 5 rotating shaft, 6 clamping block, 601 functional slot, 602 conductive plate, 603 connecting cavity, 7 liquid storage tank, 8 fixed pipe, 9 mounting slot, 10 sliding pipe, 11 pressure relief valve, 12 rubber elastic membrane, 13 sliding plate, 14 permanent magnet, 15 first electromagnet, 16 first spring, 17 conductive ring, 18 lifting screw, 19 driving motor, 20 first gear, 21 second gear, 22 guide column, 23 locking cavity, 24 electric push rod, 25 locking block, 26 sliding sleeve, 27 slider, 28 arc block, 29 cavity, 30 metal plate, 31 second electromagnet, 32 second spring, 33 connecting pipe, 34 electrorheological fluid. DETAILED DESCRIPTION

[0030] Reference Figure 1-8 A transport device for a liquefied petroleum gas cylinder intelligent welding workshop includes a hollow base 1, a fixed frame 2 is rotatably connected to the upper surface of the base 1 through a bearing, a damping pad is provided on the contact surface between the fixed frame 2 and the base 1, so that there is a certain damping when the fixed frame 2 rotates, and the fixed frame 2 is slidably connected to a placement plate 3, such as Figure 2 As shown, a groove is provided on the upper surface of the placement plate 3 for placing a liquefied petroleum gas cylinder, and a clamping mechanism is provided on the placement plate 3;

[0031] The clamping mechanism includes two vertical plates 4, which are fixedly connected to the upper surface of the placement plate 3. A rotating shaft 5 is rotatably connected between the two vertical plates 4 through a bearing. A clamping block 6 is fixedly connected to the rotating shaft 5. A mounting groove 9 is provided on the bottom wall of the clamping block 6. A plurality of sliding tubes 10 are fixedly connected to the bottom wall of the clamping block 6. A pressure relief valve 11 is provided in the sliding tube 10. The pressure relief valve 11 can be opened only after the pressure reaches a certain value. This is the prior art. A liquid storage tank 7 is fixedly connected to the upper surface of the placement plate 3. A sliding plate 13 is sealed and slidably connected to the liquid storage tank 7. The inner wall of the box 7 is fixedly connected with a first electromagnet 15. After the first electromagnet 15 is energized, it can generate a magnetic repulsion force on the permanent magnet 14. The side wall of the sliding plate 13 close to the first electromagnet 15 is fixedly connected with the permanent magnet 14. A plurality of fixed tubes 8 are fixedly connected through the top wall of the liquid storage box 7. The sliding tube 10 is sealed and slidably sleeved with the corresponding fixed tubes 8. The liquid storage box 7 is filled with an electrorheological fluid 34. The electrorheological fluid 34 is in a liquid state under normal conditions. After a certain current is passed, it can be changed from a liquid state to a solid state. This is a prior art. When transporting, the liquid to be transported The liquefied petroleum gas cylinder is placed on the placement plate 3, and the device is powered on at the same time. At this time, the first electromagnet 15 is powered on, generating a magnetic repulsion force on the permanent magnet 14, so that the sliding plate 13 slides, and the electrorheological fluid 34 is pumped into the fixed tube 8, so that the sliding tube 10 slides out, and at the same time drives the pressing block 6 to rotate, and the rubber elastic membrane 12 contacts the liquefied petroleum gas cylinder and deforms according to its size. When it is compressed to a certain extent, the electrorheological fluid 34 continues to be pumped into the fixed tube 8, reaching the critical value of the pressure relief valve 11, and the pressure relief valve 11 opens, and the electrorheological fluid 34 is pumped out. The conductive plate 602 is pumped into the mounting groove 9 until the mounting groove 9 is filled, and then pumped into the functional groove 601 through the connecting cavity 603, so that the conductive plate 602 slides down until the conductive plate 602 contacts the conductive ring 17. The electrorheological fluid 34 is energized and changes from liquid to solid, so that the shape of the rubber elastic membrane 12 is fixed, tightly fits the transported liquefied petroleum gas cylinder, and clamps it, effectively fixing the liquefied petroleum gas cylinder during lifting and lowering, avoiding collisions between liquefied petroleum gas cylinders, resulting in surface damage or even falling, thereby improving the safety of the equipment.

[0032] It is worth mentioning that, through the deformation of the rubber elastic membrane 12, it is deformed to fit tightly with the transported liquefied petroleum gas cylinder and then fixed in shape, so that the device can provide better compression and fixation for liquefied petroleum gas cylinders of different sizes, thereby making the device more applicable.

[0033] The clamping mechanism also includes two functional grooves 601 and two connecting cavities 603 provided in the clamping block 6. The connecting cavities 603 connect the corresponding functional grooves 601 with the mounting grooves 9. A conductive plate 602 is sealed and slidably connected in the functional grooves 601. A plurality of first springs 16 are fixedly connected between the conductive plate 602 and the functional grooves 601. A conductive ring 17 is fixedly connected to the top wall of the functional grooves 601. Figure 8As shown, the conductive plate 602, the drive motor 19, and the second electromagnet 31 are connected in series through a wire and then connected to the negative electrode of the power supply. The conductive ring 17 is connected to the positive electrode of the power supply. The first electromagnet 15 is connected in parallel with the conductive plate 602, the drive motor 19, and the second electromagnet 31. Only after the conductive plate 602 contacts the conductive ring 17, the drive motor 19 can be powered on to start, so that after the liquefied petroleum gas cylinder on the placement plate 3 is effectively fixed, the drive motor 19 can be started to lift and rotate. At the same time, after the two are in contact, the current is transmitted to the electrorheological fluid 34 through the conductive plate 602 to solidify it, so that the shape of the rubber elastic membrane 12 is fixed, thereby further ensuring the stability of the transportation of the liquefied petroleum gas cylinder.

[0034] A driving mechanism is provided at the base 1, and the driving mechanism includes a driving motor 19 fixedly connected to the upper surface of the base 1, and the output shaft of the driving motor 19 is rotatably connected to the top wall of the base 1 through a bearing, and the output shaft of the driving motor 19 is interference-fitted with a first gear 20, and the bottom wall of the fixed frame 2 and the top wall of the base 1 are rotatably connected with a lifting screw 18 through a bearing. A section of the lifting screw 18 located in the fixed frame 2 is provided with a thread and is threadably connected to the placement plate 3, and the rest of the structure is a smooth structure, and a section of the lifting screw 18 located in the base 1 is interference-fitted with a second gear 21, and the second gear 21 is meshed with the first gear 20.

[0035] The driving mechanism also includes a locking cavity 23 provided in the bottom wall of the fixed frame 2. The two inner side walls opposite to each other of the locking cavity 23 are fixedly connected with an electric push rod 24. The output end of the electric push rod 24 is fixedly connected with a locking block 25. By operating the electric push rod 24, the locking block 25 is pushed out so as to abut against the lifting screw 18. Then, the lifting screw 18 can be rotated while driving the fixed frame 2 and the placement plate 3 to rotate together to rotate the liquefied petroleum gas cylinder. When the locking block 25 is contracted so as not to abut against the lifting screw 18, the lifting screw 18 can rotate freely to drive the placement plate 3 to rise and fall, so that only one driving motor 19 is required to complete the lifting and rotation, making the structure of the equipment more compact.

[0036] The base 1 is provided with a locking mechanism, which includes a cavity 29 opened in the base 1, a metal plate 30 is sealed and slidably connected in the cavity 29, a plurality of second springs 32 are fixedly connected between the metal plate 30 and the inner wall of the cavity 29, a second electromagnet 31 is fixedly connected to the inner wall of the cavity 29, the second electromagnet 31 is electrically connected to the drive motor 19 through a wire, and when the second electromagnet 31 is energized, a magnetic attraction is generated on the metal plate 30, a sliding sleeve 26 is fixedly connected to the inner wall of the base 1, a slider 27 is sealed and slidably connected in the sliding sleeve 26, an arc block 28 is fixedly connected to the side wall of the slider 27 located on the outer side of the sliding sleeve 26, and a plurality of second springs 32 are fixedly connected between the base 1 and the sliding sleeve 26. A connecting pipe 33, one end of which extends into the cavity 29, and the other end extends into the sleeve 26. Hydraulic oil is filled between the metal plate 30 and the slider 27, so that when the drive is raised and rotated, the second electromagnet 31 is energized while the drive motor 19 is turned on, so that the metal plate 30 slides, and then the slider 27 slides through the hydraulic oil, contacting the arc block 28 and the second gear 21 to release the lock. When the drive motor 19 is powered off, under the elastic force of the second spring 32, the hydraulic oil is transmitted again, so that the arc block 28 and the second gear 21 are abutted and locked, thereby preventing the fixed frame 2 from rotating and ensuring the stability of the equipment during stagnation.

[0037] The size of the second gear 21 is larger than that of the first gear 20 , so that the driving motor 19 can make the lifting screw 18 generate a larger torque with a smaller force, and the liquefied petroleum gas cylinder can be lifted and lowered more smoothly.

[0038] The cross-sectional area of ​​the metal plate 30 is larger than that of the slider 27. Since the liquid cannot be compressed and the pressure of the hydraulic oil remains unchanged, the larger the cross-sectional area, the greater the force generated. As a result, the sliding of the metal plate 30 can generate a greater pressure at the slider 27, so that the arc block 28 can squeeze the second gear 21 with a greater force to better lock it. A rubber pad is fixedly connected to the side wall of the arc block 28 close to the second gear 21. The rubber pad can increase the friction between the arc block 28 and the second gear 21 to better lock it.

[0039] In the present invention, the liquefied petroleum gas cylinder to be transported is first placed on the placement plate 3, and at the same time, the device is powered on. At this time, the first electromagnet 15 is first powered on to generate a magnetic repulsion force on the permanent magnet 14, so that the permanent magnet 14 drives the sliding plate 13 to slide, and the electrorheological fluid 34 in the liquid storage tank 7 is pumped into the fixed tube 8, so that the sliding tube 10 slides, drives the pressing block 6 to rotate, and makes the rubber elastic film 12 contact with the liquefied petroleum gas cylinder and press it, and at the same time, the rubber elastic film 12 is deformed according to the size and shape of the liquefied petroleum gas cylinder;

[0040] After being compressed to a certain degree, the electrorheological fluid 34 continues to be pumped into the fixed tube 8, and reaches the critical value of the pressure relief valve 11. The pressure relief valve 11 opens, and the electrorheological fluid 34 is pumped into the installation groove 9 through the sliding tube 10, and the installation groove 9 is filled. Then the electrorheological fluid 34 is pumped into the functional groove 601 through the connecting cavity 603, so that the conductive plate 602 slides down until the conductive plate 602 slides down to contact the conductive ring 17. The conductive plate 602 transmits the current to the electrorheological fluid 34, so that the electrorheological fluid 34 changes from liquid to solid, so that the shape of the rubber elastic membrane 12 is fixed, and the liquefied petroleum gas cylinder is fixed;

[0041] At the same time, the contact between the conductive plate 602 and the conductive ring 17 causes the drive motor 19 to be energized, that is, after the clamping and fixing is completed, the drive motor 19 can be turned on. At the same time, the second electromagnet 31 is energized to generate a magnetic attraction force on the metal plate 30, so that the metal plate 30 slides, and the hydraulic oil in the sleeve 26 is drawn into the cavity 29 through the connecting pipe 33, so that the slider 27 drives the arc block 28 to slide away from the second gear 21, and releases the lock on it. At this time, the drive motor 19 rotates to drive the first gear 20 to rotate, and the first gear 20 drives the second gear 21 meshing therewith to rotate, so that the lifting screw 18 with an interference fit with the second gear 21 rotates, and the placement plate 3 is raised through the threaded connection to lift the liquefied petroleum gas cylinder. The lifting is more stable through the lifting screw 18, and the meshing of the two gears in the base 1 can save more effort, thereby reducing the load on the drive motor 9 and improving the service life.

[0042] After being lifted to a certain height and stagnating, the switch of the driving motor 19 is turned off, and the second electromagnet 31 is powered off accordingly, and the magnetic attraction of the metal plate 30 disappears. Under the elastic force of the second spring 32, the metal plate 30 slides to pump the hydraulic oil into the sliding sleeve 26, so that the slider 27 drives the arc block 28 to tightly abut against the second gear 21 to lock it. When it is necessary to rotate, the electric push rod 24 is started, so that the locking block 25 is pushed and tightly abuts against the lifting screw 18. At this time, turning on the driving motor 19 can make the lifting screw 18 drive the entire fixed frame 2 and the placement plate 3 to rotate together, so as to rotate the liquefied petroleum gas cylinder;

[0043] After lifting and rotating to the specified position, the equipment is powered off, and the electrorheological fluid 34 is powered off and changes from solid to liquid. At this time, the first electromagnet 15 is powered off. Since the first electromagnet 15 is essentially a metal block after power is off, the permanent magnet 14 can generate magnetic attraction to it, so that the permanent magnet 14 drives the sliding plate 13 to slide in the direction of the first electromagnet 15. First, the electrorheological fluid 34 in the fixed tube 8 is drawn into the liquid storage tank 7, so that the sliding tube 10 slides back, driving the clamping block 6 to rotate and separate from the liquefied petroleum gas cylinder. After resetting, the sliding plate 13 continues to slide and reaches the critical value of the pressure relief valve 11. The pressure relief valve 11 opens, so that the electrorheological fluid 34 in the installation groove 9 is drawn into the liquid storage tank 7 through the sliding tube 10 until the permanent magnet 14 contacts the first electromagnet 15, and the liquefied petroleum gas cylinder on the placement plate 3 is removed and placed.

Claims

1. A transport device for a liquefied petroleum gas cylinder intelligent welding workshop, comprising a hollow base (1), characterized in that: The upper surface of the base (1) is rotatably connected to a fixed frame (2) via a bearing, the fixed frame (2) is slidably connected to a placement plate (3), and a clamping mechanism is provided on the placement plate (3); The clamping mechanism comprises two vertical plates (4), the vertical plates (4) are fixedly connected to the upper surface of the placement plate (3), a rotating shaft (5) is rotatably connected between the two vertical plates (4) via a bearing, the rotating shaft (5) penetrates and is fixedly connected to a clamping block (6), a mounting groove (9) is provided on the bottom wall of the clamping block (6), a plurality of sliding tubes (10) are penetrated and fixedly connected to the bottom wall of the clamping block (6), a pressure relief valve (11) is provided in the sliding tube (10), and the upper surface of the placement plate (3) is fixedly connected to A liquid storage tank (7) is provided, wherein a sliding plate (13) is sealed and slidably connected inside the liquid storage tank (7), a first electromagnet (15) is fixedly connected to the inner side wall of the liquid storage tank (7), a permanent magnet (14) is fixedly connected to the side wall of the sliding plate (13) close to the first electromagnet (15), a plurality of fixed tubes (8) are fixedly connected through the top wall of the liquid storage tank (7), the sliding tubes (10) are sealed and slidably sleeved with the corresponding fixed tubes (8), and the liquid storage tank (7) is filled with an electrorheological fluid (34).

2. The transportation equipment for a liquefied petroleum gas cylinder intelligent welding workshop according to claim 1 is characterized in that: The clamping mechanism further comprises two functional grooves (601) and two connecting cavities (603) provided in the clamping block (6); the connecting cavities (603) connect the corresponding functional grooves (601) with the mounting grooves (9); a conductive plate (602) is sealingly and slidably connected in the functional grooves (601); a plurality of first springs (16) are fixedly connected between the conductive plate (602) and the functional grooves (601); and a conductive ring (17) is fixedly connected to the top wall of the functional grooves (601).

3. The transportation equipment for a liquefied petroleum gas cylinder intelligent welding workshop according to claim 1 is characterized in that: The base (1) is provided with a driving mechanism, the driving mechanism comprising a driving motor (19) fixedly connected to the upper surface of the base (1), the output shaft of the driving motor (19) being rotatably connected to the top wall of the base (1) via a bearing, the output shaft of the driving motor (19) being interference-fitted with a first gear (20), the bottom wall of the fixed frame (2) and the top wall of the base (1) being rotatably connected together with a lifting screw (18) via a bearing, a section of the lifting screw (18) located in the fixed frame (2) being provided with a thread and being threadably connected to the placement plate (3), and the rest of the section being a smooth structure, a section of the lifting screw (18) located in the base (1) being interference-fitted with a second gear (21), and the second gear (21) being meshed with the first gear (20).

4. The transport equipment for a liquefied petroleum gas cylinder intelligent welding workshop according to claim 3 is characterized in that: The driving mechanism further comprises a locking cavity (23) formed in the bottom wall of the fixed frame (2), two opposite inner side walls of the locking cavity (23) are fixedly connected to electric push rods (24), and an output end of the electric push rod (24) is fixedly connected to a locking block (25).

5. The transportation equipment for a liquefied petroleum gas cylinder intelligent welding workshop according to claim 1 is characterized in that: The base (1) is provided with a locking mechanism, the locking mechanism comprising a cavity (29) opened in the base (1), a metal plate (30) being sealed and slidably connected in the cavity (29), a plurality of second springs (32) being fixedly connected between the metal plate (30) and the inner wall of the cavity (29), a second electromagnet (31) being fixedly connected to the inner wall of the cavity (29), a sleeve (26) being fixedly connected to the inner wall of the base (1), a slider (27) being sealed and slidably connected in the sleeve (26), a side wall of the slider (27) being fixedly connected to an arc block (28) on the outer side of the sleeve (26), a plurality of connecting pipes (33) being fixedly connected through the base (1) and the sleeve (26), one end of the connecting pipe (33) extending through the cavity (29) and the other end extending through the sleeve (26), and hydraulic oil being filled between the metal plate (30) and the slider (27).

6. The transportation equipment for a liquefied petroleum gas cylinder intelligent welding workshop according to claim 3 is characterized in that: The size of the second gear (21) is greater than that of the first gear (20).

7. The transport equipment for a liquefied petroleum gas cylinder intelligent welding workshop according to claim 5 is characterized in that: The cross-sectional area of ​​the metal plate (30) is larger than the cross-sectional area of ​​the slider (27), and a rubber pad is fixedly connected to the side wall of the arc block (28) close to the second gear (21).

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