A refrigerant pressure container hoisting and conveying mechanism

Abstract

The application discloses a refrigerant pressure container hoisting and conveying mechanism and belongs to the technical field of pressure container transportation. The refrigerant pressure container hoisting and conveying mechanism comprises a hoisting mechanism, a clamping mechanism, a buffer mechanism and a conveying track. The hoisting mechanism comprises a hoisting driving assembly, a pair of guide columns, a pair of lifting assemblies and a cross beam. The hoisting driving assembly is arranged at the top end of the cross beam and is in sliding connection with the cross beam. The lifting assemblies are detachably connected with the clamping mechanism. The clamping mechanism comprises a pair of oppositely arranged V-shaped plates, and the V-shaped plates can stably clamp the pressure container through opposite movement. The buffer mechanism comprises clamping buffer mechanisms and bottom buffer mechanisms. The clamping buffer mechanisms are arranged on the surfaces of the V-shaped plates, and the bottom buffer mechanisms are arranged below the clamping mechanism and are used for bearing the elastic impact load in the springback process of the carrier after the pressure container is hoisted. The conveying track is arranged on the ground and extends in the horizontal direction and is used for conveying the pressure container to a designated station.

Description

Technical Field

[0001] This invention belongs to the field of pressure vessel transportation technology, and more specifically, relates to a refrigerant pressure vessel hoisting and conveying mechanism. Background Technology

[0002] In industries such as refrigeration and chemicals, the transportation and unloading of refrigerant pressure vessels is a routine operation. The media filled in these vessels are often toxic, flammable, explosive, or have high-pressure characteristics, and any leakage may cause serious safety and environmental accidents.

[0003] In existing technologies, loading and unloading are typically carried out manually with simple lifting tools, which suffers from high operational risks, poor positioning accuracy, low automation, and low work efficiency. Furthermore, because refrigerant pressure vessels require greater stability, effective suppression of micro-vibrations and impacts during lifting is essential. Additionally, during the unloading and lifting of pressure vessels, the carrier at the bottom of the pressure vessel is also an elastic body. When the pressure vessel is on the carrier, it sinks; the moment the pressure vessel leaves, the entire carrier rebounds upwards. Since the lifting process is usually instantaneous, the carrier exerts an upward impact force on the pressure vessel upon rebound after separation. Impact forces can easily lead to instability during hoisting, and may even cause container overturning or damage to the sealing structure. Taking an adjustable chemical safety clamping device (CN202223204654.5) disclosed in Chinese invention patent literature as an example, this application uses a driving cylinder to drive the L-shaped mounting frame to slide, thereby achieving adaptive clamping of the clamping parts for chemical tanks of different sizes and reducing the operational risks of manual operation. However, this application does not have a buffer design for the elastic rebound impact at the moment of separation of the pressure vessel from the carrier, which means that instability may still occur during hoisting, especially at the critical moment of separation of the pressure vessel from the carrier, where there is still a significant risk of dynamic impact.

[0004] Therefore, we need a mechanism that can stabilize the lifting process and mitigate the impact of elastic rebound during the separation of the pressure vessel from the carrier. Summary of the Invention

[0005] The purpose of this invention is to provide a refrigerant pressure vessel hoisting and conveying mechanism that provides stable hoisting process and achieves dual buffering synergy through a clamping buffer mechanism and a bottom buffer mechanism, while also mitigating the elastic rebound impact at the moment of separation of the pressure vessel from the carrier.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The present invention discloses a refrigerant pressure vessel hoisting and conveying mechanism, comprising a hoisting mechanism, a clamping mechanism, a buffer mechanism, and a conveying track; the hoisting mechanism includes a hoisting drive assembly, a pair of guide columns, a pair of lifting assemblies, and a crossbeam; both ends of the crossbeam are detachably mounted on the top of the pair of guide columns, the hoisting drive assembly is located at the top of the crossbeam and slidably connected to the crossbeam, and is used to move along the crossbeam to align and hoist the pressure vessel; the pair of lifting assemblies are respectively located on the pair of guide columns, and the lifting assemblies are detachably connected to the clamping mechanism, and are used to synchronously drive the clamping mechanism to slide along the guide columns.

[0008] The clamping mechanism includes a pair of opposing V-shaped plates that clamp the cylindrical outer wall of the pressure vessel by moving in opposite directions to achieve stable clamping of the pressure vessel.

[0009] The buffer mechanism includes a clamping buffer mechanism and a bottom buffer mechanism. The clamping buffer mechanism is located on the surface of the V-shaped plate and is used to conform to the curved surface of the pressure vessel and absorb the impact at the moment of clamping. The bottom buffer mechanism is located below the clamping mechanism and is used to bear the elastic impact load of the carrier rebounding after the pressure vessel is lifted, so as to avoid the impact being transmitted to the pressure vessel and causing instability.

[0010] The conveyor track is located on the ground and extends horizontally to carry the pressure vessel after unloading and guide it to the designated work station.

[0011] As a further improvement of the present invention, the clamping mechanism also includes a pair of clamping cylinders, several connecting rods, and a pair of support platforms. The pair of clamping cylinders are detachably mounted on the top of the lifting assembly. The output end of the clamping cylinder is detachably connected to the V-shaped plate for driving the V-shaped plate to clamp the pressure vessel. The support platform is located below the V-shaped plate and is fixedly connected to the V-shaped plate by several connecting rods. The bottom of the support platform is in contact with the plane of the bottom carrier of the pressure vessel for supporting the pressure vessel. A bottom groove is opened at the bottom of the support platform, and a bottom buffer mechanism is detachably installed inside the bottom groove. The bottom of the bottom buffer mechanism is in contact with the plane of the carrier at its initial position for absorbing and buffering the impact load generated by the elastic rebound of the carrier during the rebound process after the pressure vessel is lifted, so as to avoid the impact being transmitted to the pressure vessel and causing instability.

[0012] As a further improvement of the present invention, the clamping buffer mechanism includes a trigger post, a trigger plate, and a pair of springs. The lower clamping wing of the V-shaped plate has a slot, and a hinge hole is provided at the lower part of the slot. The side of the trigger post has a hinge end that matches the hinge hole. The trigger post is hinged to the hinge hole of the V-shaped plate. The width of the slot is the same as the height of the trigger post, and the length of the slot is less than the diameter of the trigger post. One end of the trigger plate is hinged to the lower part of the lower clamping wing of the V-shaped plate, and the plate surface of the other end is detachably connected to one end of the spring. The other end of the spring is detachably connected to the top of the side of the lower clamping wing of the V-shaped plate that does not contact the pressure vessel, which is used to reduce the impact force at the moment of clamping. The bottom of the trigger post and the upper surface of the trigger plate are kept in contact due to the elasticity of the spring, which is used to squeeze the trigger plate to rotate around the hinge point after the V-shaped plate clamps the pressure vessel.

[0013] As a further improvement of the present invention, a gas-liquid damper is provided on the side of the trigger plate away from the V-shaped plate. The gas-liquid damper includes a piston rod and a hydraulic cylinder. The upper end of the piston rod is hinged to the side of the trigger plate away from the V-shaped plate, and the lower end of the piston rod extends into the hydraulic cylinder and slides against its inner wall to form a buffer damping structure. A support platform is provided at the bottom of the clamping mechanism. The lower part of the hydraulic cylinder is hinged to the upper part of the support platform, so that the piston rod of the gas-liquid damper retracts into the hydraulic cylinder synchronously as the trigger plate rotates downward during the clamping process of the V-shaped plate. The damping force during the retraction process works in conjunction with the spring force to achieve gradual loading and dynamic buffering of the clamping force.

[0014] As a further improvement of the present invention, the bottom buffer mechanism includes a second gas-liquid damper, a support plate, and a pair of limiting platforms; the second gas-liquid damper includes a second piston rod and a second hydraulic cylinder, the upper end of the second piston rod is detachably connected to the upper end of the bottom groove of the support platform, and the lower end extends into the second hydraulic cylinder and slides against its inner wall to form a buffer damping structure; the support plate is detachably installed at the bottom of the second hydraulic cylinder, and the pair of limiting platforms are fixedly connected to the upper end of the bottom groove. The pair of limiting platforms are respectively sleeved on the outer shaft of the second hydraulic cylinder, and the inner side of the limiting platform is slidably connected to the outer side of the hydraulic cylinder to limit the shaking of the second hydraulic cylinder during the pressure process and improve the axial stability of the second hydraulic cylinder.

[0015] As a further improvement of the present invention, a magnet is provided on the side wall of the support plate, which is attracted and attached to a magnet provided on one side wall of the bottom groove to maintain the initial installation stability of the hydraulic cylinder 2; a plurality of magnets are provided on the bottom surface of the support plate, which keep the support plate in contact with the surface of the carrier through magnetic attraction force, and are used to linearly transmit the rebound force of the carrier when it rebounds; the total magnetic attraction force of the plurality of magnets 3 is greater than the magnetic attraction force between magnet 1 and magnet 2, and is used to maintain the continuous attraction between the support plate and the surface of the carrier while realizing the separation of the support plate from the support platform after the carrier separates from the pressure vessel, so as to ensure that the force transmission path is not interrupted during the rebound of the carrier.

[0016] As a further improvement of the present invention, a U-shaped mounting groove is provided on the surface of the V-shaped plate clamping wing plate that contacts the pressure vessel. A buffer airbag is embedded inside the U-shaped mounting groove, and a compensation air chamber is provided inside the hydraulic cylinder. The buffer airbag is connected to the compensation air chamber of the hydraulic cylinder inside the gas-liquid damper through a pipeline. This pipeline is used to simultaneously inflate the buffer airbag when the V-shaped plate is clamped, so that the buffer airbag quickly expands to form a flexible buffer layer. At the same time, this increases the clamping force on the pressure vessel, improves the clamping stability, and provides effective protection for the pressure vessel.

[0017] As a further improvement of the present invention, the surface of the V-shaped plate that holds the wing plate in contact with the pressure vessel is provided with a U-shaped mounting groove II. The U-shaped mounting groove II is embedded with a buffer airbag II. The hydraulic cylinder II is provided with a compensation air chamber. The buffer airbag II and the compensation air chamber of the hydraulic cylinder II inside the gas-liquid damper II are connected through a pipeline II. This is used to synchronously inflate the buffer airbag II after the vehicle rebounds to form a top flexible support layer. This allows the elastic force to be transmitted to the pressure vessel during the vehicle rebound process, thereby increasing the clamping force on the pressure vessel and reducing the impact of the pressure vessel on the upper clamping wing plate of the V-shaped plate.

[0018] As a further improvement of the present invention, the hoisting drive assembly includes a lead screw motor, a lead screw, a lead screw support end, a guide slider, a drive motor, and several wire ropes; the input end of the lead screw motor is coaxially connected to the lead screw, and the guide slider has a threaded hole inside, which is threadedly engaged with the lead screw through the threaded hole; the lead screw motor is detachably mounted on one end of the crossbeam, the lead screw support end is located at the other end of the crossbeam, and the end of the lead screw away from the lead screw motor is rotatably connected to the lead screw support end; the drive motor is detachably mounted on the upper part of the guide slider, and a drum is coaxially fixed to the output end of the drive motor, with several wire ropes wound on the drum; the bottom end of the wire ropes is provided with a hook for hooking the lifting lug of the pressure vessel; the lead screw motor drives the lead screw to rotate, causing the guide slider to reciprocate along the crossbeam, which is used to adjust the horizontal position of the hanger on the crossbeam to correspond to the position of the pressure vessel, thereby achieving precise alignment before hoisting.

[0019] As a further improvement of the present invention, the lifting assembly includes a lifting cylinder, a support rod, and a mounting plate. The lifting cylinder is vertically mounted at the bottom of the guide column, and the output end of the lifting cylinder is detachably connected to the bottom of the support rod. The top end of the support rod is fixedly connected to the mounting plate. One side of the mounting plate is in contact with the guide column, and a sliding boss is provided on the side of the mounting plate that is in contact with the guide column. The guide column has a sliding groove extending in the vertical direction, and the sliding boss is embedded in the sliding groove for sliding connection between the mounting plate and the guide column. The upper part of the mounting plate is used to mount a clamping mechanism. The lifting cylinder extends and retracts to drive the clamping mechanism to rise and fall smoothly along the guide column, realizing synchronous lifting of the clamping mechanism during the lifting process of the pressure vessel.

[0020] Compared to existing technologies, the advantages of this invention are as follows: The refrigerant pressure vessel hoisting and conveying mechanism of this invention, through the coordinated operation of the hoisting mechanism, clamping mechanism, and buffering mechanism, effectively suppresses the transient impact caused by the elastic rebound of the carrier by the bottom buffering mechanism, thus effectively improving the dynamic stability and safety of the hoisting process; by setting a pair of opposing clamping cylinders to drive the V-shaped plate to clamp the pressure vessel, the inner wall of the V-shaped plate enables adaptive clamping of pressure vessels of different sizes, improving clamping efficiency and versatility; by setting a trigger post at the bottom of the V-shaped plate, when the V-shaped plate clamps the pressure vessel, the trigger post simultaneously presses down the trigger plate, thereby activating the gas-liquid damper, which not only provides initial buffering against the transient impact during the clamping process, but also increases the clamping force on the pressure vessel through the combined action of the reverse feedback force of the gas-liquid damper and the elastic force of the spring, improving clamping stability; by setting a bottom buffering mechanism at the bottom of the support platform, when the pressure vessel separates from the carrier, the rebound of the carrier is effectively suppressed. The shock is absorbed by the second gas-liquid damper, significantly reducing the dynamic impact amplitude at the moment of separation. By connecting the first gas-liquid damper with the first buffer airbag at the bottom of the V-shaped plate, the expansion amplitude of the first buffer airbag increases during the compression of the first gas-liquid damper. At this time, the expansion of the first buffer airbag provides better support for the bottom of the pressure vessel, thereby achieving flexible contact with the bottom of the pressure vessel while increasing the clamping force. By connecting the second gas-liquid damper with the second buffer airbag at the top of the V-shaped plate, after the pressure vessel separates from the carrier, the rebound of the carrier causes the second gas-liquid damper to expand synchronously during the compression of the second buffer airbag, thus reducing the elastic impact of the carrier. By setting the third magnet at the bottom of the second gas-liquid damper, the bottom of the second gas-liquid damper remains in contact with the surface of the carrier after the pressure vessel separates from the carrier. This ensures that the carrier maintains stable contact with the clamping mechanism during the rebound and is continuously subjected to the damping force of the piston rod second inside the hydraulic cylinder second. This damping force continuously increases with the increase of the rebound displacement, effectively suppressing the sudden change in the rebound process of the truck. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a refrigerant pressure vessel hoisting and conveying mechanism according to the present invention;

[0022] Figure 2 This is a schematic diagram of the clamping mechanism of the present invention;

[0023] Figure 3 This is a partial cross-sectional structural diagram of the clamping buffer mechanism of the present invention;

[0024] Figure 4 This is a partial cross-sectional structural diagram of the bottom buffer mechanism of the present invention;

[0025] Figure 5 This is an enlarged schematic diagram of the structure at point A of the present invention;

[0026] Figure 6 This is a schematic diagram of a partial cross-sectional structure of the V-shaped plate of the present invention;

[0027] Figure 7 This is a schematic diagram of the hoisting mechanism of the present invention.

[0028] Explanation of the labels in the diagram:

[0029] 1. Lifting mechanism; 11. Lifting drive assembly; 111. Motor; 112. Lead screw; 113. Lead screw support end; 114. Guide slider; 115. Drive motor; 116. Wire rope; 12. Guide column; 13. Lifting assembly; 131. Lifting cylinder; 132. Support rod; 133. Mounting folding plate; 14. Crossbeam; 2. Clamping mechanism; 21. V-shaped plate; 211. Groove; 212. Hinge hole; 213. U-shaped mounting groove one; 214. Buffer airbag one; 215. Pipeline one; 216. U-shaped mounting groove II, 217 buffer airbag II, 218 pipeline II, 22 clamping cylinder, 23 connecting rod, 24 support platform, 241 bottom groove, 242 magnet II, 3 buffer mechanism, 31 clamping buffer mechanism, 311 trigger column, 3111 hinge end, 312 trigger plate, 313 spring, 32 bottom buffer mechanism, 321 hydraulic damper II, 3211 piston rod II, 3212 hydraulic cylinder II, 322 support plate, 323 limit platform, 324 magnet I, 325 magnet III, 33 gas-liquid damper I, 331 piston rod I, 332 hydraulic cylinder I, 4 conveying track, 5 pressure vessel. Detailed Implementation

[0030] Specific Implementation Example 1: Please refer to... Figures 1-7 A refrigerant pressure vessel hoisting and conveying mechanism includes a hoisting mechanism 1, a clamping mechanism 2, a buffer mechanism 3, and a conveying track 4. The hoisting mechanism 1 includes a hoisting drive assembly 11, a pair of guide columns 12, a pair of lifting assemblies 13, and a crossbeam 14. The two ends of the crossbeam 14 are detachably mounted on the top of the pair of guide columns 12 by bolts. The hoisting drive assembly 11 is located at the top of the crossbeam 14 and is slidably connected to the crossbeam 14 for displacement along the crossbeam 14 to align and hoist the pressure vessel 5. The pair of lifting assemblies 13 are located on the pair of guide columns 12, and the lifting assemblies 13 are detachably connected to the clamping mechanism 2 by bolts for synchronously driving the clamping mechanism 2 to slide along the guide columns 12.

[0031] The clamping mechanism 2 includes a pair of V-shaped plates 21 arranged opposite to each other, which clamp the cylindrical outer wall of the pressure vessel 5 by moving towards each other to achieve stable clamping of the pressure vessel 5.

[0032] The buffer mechanism 3 includes a clamping buffer mechanism 31 and a bottom buffer mechanism 32. The clamping buffer mechanism 31 is located on the surface of the V-shaped plate 21 and is used to conform to the curved surface of the pressure vessel 5 and absorb the impact at the moment of clamping. The bottom buffer mechanism 32 is located below the clamping mechanism 2 and is used to bear the elastic impact load of the carrier, such as a truck, during the rebound process after the pressure vessel 5 is lifted, so as to avoid the impact being transmitted to the pressure vessel 5 and causing instability.

[0033] The conveying track 4 is located on the ground and extends horizontally to carry the pressure vessel 5 after unloading and guide it to the designated work station.

[0034] Specifically, such as Figure 2 The clamping mechanism 2 shown also includes a pair of clamping cylinders 22, several connecting rods 23, and a pair of support platforms 24. The pair of clamping cylinders 22 are detachably mounted on the top of the lifting assembly 13 by means of bolts. The output end of the clamping cylinder 22 is detachably connected to the V-shaped plate 21 and is used to drive the V-shaped plate 21 to clamp the pressure vessel 5. The support platform 24 is located at the lower part of the V-shaped plate 21 and is fixedly connected to the V-shaped plate 21 by several connecting rods 23. The bottom of the support platform 24 is in contact with the plane of the transport vehicle at the bottom of the pressure vessel 5 and is used to support the pressure vessel 5. The bottom of the support platform 24 has a bottom groove 241. The bottom buffer mechanism 32 is detachably installed inside the bottom groove 241. The bottom of the bottom buffer mechanism 32 is in contact with the plane of the transport vehicle at its initial position and is used to absorb and buffer the impact load generated by the elastic rebound of the transport vehicle during the rebound process after the pressure vessel 5 is lifted, so as to avoid the impact being transmitted to the pressure vessel 5 and causing instability.

[0035] Specifically, such as Figure 3The clamping and buffering mechanism 31 shown includes a trigger post 311, a trigger plate 312, and a pair of springs 313. The lower clamping wing of the V-shaped plate 21 has a slot 211, and a hinge hole 212 is provided at the lower part of the slot 211. The side of the trigger post 311 has a hinge end 3111 that matches the hinge hole 212. The trigger post 311 is hinged to the hinge hole 212 of the V-shaped plate 21. The width of the slot 211 is the same as the height of the trigger post 311, and the length of the slot 211 is less than the diameter of the trigger post 311. One end of the trigger plate 312 is hinged to the lower part of the lower clamping wing of the V-shaped plate 21, and the other end of the plate is detachably connected to one end of the springs 313 via a hook. The other end of the springs 313 is not connected to the lower clamping wing of the V-shaped plate 21 by means of a pressure vessel. The top of the contact side of the device 5 is detachably connected by a hook to reduce the impact force during clamping. The bottom of the trigger post 311 and the upper surface of the trigger plate 312 are kept in contact due to the elasticity of the spring 313. The spring 313 is used to pull up the trigger plate 312 so that the trigger post 311 abuts against the upper part of the slot 211. At this time, the trigger post 311 will exceed the plane of the lower clamping wing plate of the V-shaped plate 21 by a small amount. When the V-shaped plate 21 clamps the pressure vessel 5, the pressure vessel 5 will cause the trigger post 311 to rotate downward around the hinge hole 212, thereby squeezing the trigger plate 312 to rotate around the hinge point between the trigger plate 312 and the V-shaped plate 21. The spring 313 is stretched elastically, which reduces the impact force during clamping and improves the stability and safety of the clamping process.

[0036] Specifically, a gas-liquid damper 33 is provided on the side of the trigger plate 312 away from the V-shaped plate 21. The gas-liquid damper 33 includes a piston rod 331 and a hydraulic cylinder 332. The upper end of the piston rod 331 is hinged to the side of the trigger plate 312 away from the V-shaped plate 21, and the lower end of the piston rod 331 extends into the hydraulic cylinder 332 and slides against its inner wall to form a buffer damping structure. A support platform 24 is provided at the bottom of the clamping mechanism 2. The lower part of the hydraulic cylinder 332 is hinged to the upper part of the support platform 24, so that the piston rod 331 of the gas-liquid damper 33 retracts into the hydraulic cylinder 332 synchronously as the trigger plate 312 rotates downward during the clamping process of the V-shaped plate 21. The damping force during the retraction process works in conjunction with the elastic force of the spring 313 to achieve gradual loading and dynamic buffering of the clamping force.

[0037] Specifically, such as Figure 4The bottom buffer mechanism 32 shown includes a second gas-liquid damper 321, a support plate 322, and a pair of limiting platforms 323. The second gas-liquid damper 321 includes a second piston rod 3211 and a second hydraulic cylinder 3212. The upper end of the second piston rod 3211 is detachably connected to the upper end of the bottom groove 241 of the support platform 24, and the lower end extends into the second hydraulic cylinder 3212 and slides against its inner wall to form a buffer damping structure. The support plate 322 is detachably installed at the bottom of the second hydraulic cylinder 3212. The pair of limiting platforms 323 are fixedly connected to the upper end of the bottom groove 241. The pair of limiting platforms 323 are respectively sleeved on the outer shaft of the second hydraulic cylinder 3212. The inner side of the limiting platform 323 is slidably connected to the outer side of the second hydraulic cylinder 3212 to limit the shaking of the second hydraulic cylinder 3212 during the compression process and improve the axial stability of the second hydraulic cylinder 3212.

[0038] Specifically, such as Figure 5 The support plate 322 is provided with a magnet 324 on its side wall, which is attracted and attached to a magnet 242 on one side wall of the bottom groove 241 to maintain the initial installation stability of the hydraulic cylinder 3212. The bottom surface of the support plate 322 is provided with several magnets 325, which are attracted to a magnetic iron plate on the surface of the delivery vehicle. The magnetic attraction keeps the support plate 322 in contact with the delivery vehicle surface, allowing for the linear transmission of the delivery vehicle's rebound force when it rebounds. The total magnetic attraction of the several magnets 325 is greater than the magnetic attraction between magnet 324 and magnet 242, ensuring that the support plate 322 remains in contact with the support platform 24 while separating from the pressure vessel 5. The continuous adsorption between the support plate 322 and the surface of the delivery vehicle ensures that the elastic force transmission path is not interrupted during the rebound of the delivery vehicle. When the delivery vehicle separates from the pressure vessel 5, the support plate 322 remains in contact with the surface of the delivery vehicle, and the piston rod 3211 extends out from the inside of the hydraulic cylinder 3212. The delivery vehicle begins to rebound instantaneously. Since the support plate 322 remains in contact with the surface of the delivery vehicle, the support plate 322 drives the hydraulic cylinder 3212 to rise. At this time, it will be continuously subjected to the damping force of the piston rod 3211 inside the hydraulic cylinder 3212. This damping force increases continuously with the increase of the rebound displacement, effectively suppressing the sudden change in the rebound process of the delivery vehicle, thereby avoiding secondary impact caused by excessively fast rebound.

[0039] Specifically, such as Figure 6The surface of the lower clamping wing of the V-shaped plate 21 that contacts the pressure vessel 5 is provided with a U-shaped mounting groove 213. A buffer airbag 214 is embedded inside the U-shaped mounting groove 213. A compensation air chamber is provided inside the hydraulic cylinder 332. The buffer airbag 214 is connected to the compensation air chamber of the hydraulic cylinder 332 inside the gas-liquid damper 33 through a pipeline 215. Before lifting the pressure vessel 5, the lower clamping wing of the V-shaped plate 21 bears a large load of the pressure vessel 5. When the V-shaped plate 21 clamps, the compensation air chamber of the gas-liquid damper 33 is simultaneously inflated into the buffer airbag 214, causing the buffer airbag 214 on the lower clamping wing of the V-shaped plate 21 to quickly inflate and form a flexible buffer layer, thereby increasing the clamping force on the pressure vessel 5, improving the clamping stability, and achieving effective protection for the pressure vessel 5.

[0040] Specifically, the surface of the V-shaped plate 21 that holds the wing plate in contact with the pressure vessel 5 is provided with a U-shaped mounting groove 216. The U-shaped mounting groove 216 is embedded with a buffer airbag 217. The hydraulic cylinder 3212 is provided with a compensation air chamber. The buffer airbag 217 and the compensation air chamber of the hydraulic cylinder 3212 inside the gas-liquid damper 321 are connected through a pipeline 218. After the cargo truck rebounds, the compensation air chamber of the gas-liquid damper 321 is simultaneously inflated to the buffer airbag 217 to form a top flexible support layer. This allows the elastic force to be transmitted to the pressure vessel 5 during the rebound of the cargo truck, thereby increasing the clamping force on the pressure vessel 5 and reducing the impact of the pressure vessel 5 on the upper clamping wing plate of the V-shaped plate 21.

[0041] Specifically, such as Figure 7 The hoisting drive assembly 11 shown includes a lead screw motor 111, a lead screw 112, a lead screw support end 113, a guide slider 114, a drive motor 115, and several wire ropes 116. The input end of the lead screw motor 111 is coaxially connected to the lead screw 112. The guide slider 114 has a threaded hole inside, and the guide slider 114 is threadedly driven into the lead screw 112 through the threaded hole. The lead screw motor 111 is detachably mounted on one end of the crossbeam 14 by bolt connection, the lead screw support end 113 is located at the other end of the crossbeam 14, and the lead screw 112 is away from the lead screw motor 111. One end of the drive motor 114 is rotatably connected to the lead screw support end 113; the drive motor 115 is detachably mounted on the upper part of the guide slider 114 by means of bolt connection, and a drum is coaxially fixed at the output end of the drive motor 115, with several steel wire ropes 116 wound on the drum; the bottom end of the steel wire ropes 116 is provided with hooks for hanging the lifting lugs of the pressure vessel 5; the lead screw motor 111 drives the lead screw 112 to rotate, causing the guide slider 114 to move back and forth along the crossbeam 14, which is used to adjust the horizontal position of the hanger on the crossbeam 14 to correspond to the position of the pressure vessel 5, so as to achieve precise alignment before hoisting.

[0042] Specifically, the lifting assembly 13 includes a lifting cylinder 131, a support rod 132, and a mounting plate 133. The lifting cylinder 131 is vertically mounted at the bottom of the guide column 12. The output end of the lifting cylinder 131 is detachably connected to the bottom of the support rod 132, and the top end of the support rod 132 is fixedly connected to the mounting plate 133. One side of the mounting plate 133 is in contact with the guide column 12. A sliding boss is provided on the side of the mounting plate 133 that is in contact with the guide column 12. The guide column 12 has a sliding groove extending in the vertical direction. The sliding boss is embedded in the sliding groove for sliding connection between the mounting plate 133 and the guide column 12. The upper part of the mounting plate 133 is used to mount the clamping mechanism 2. The lifting cylinder 131 extends and retracts to drive the clamping mechanism 2 to rise and fall smoothly along the guide column 12, realizing synchronous lifting of the clamping mechanism 2 during the lifting process of the pressure vessel 5, and improving the dynamic following accuracy and clamping stability of the clamping mechanism 2 for the pressure vessel 5.

[0043] During use, after the delivery truck transports the pressure vessel 5 to the lower part of the crossbeam 14, the guide slider 114 is precisely moved along the crossbeam 14 to directly above the pressure vessel 5 by the screw motor 111. The wire rope 116 is slowly lowered, and the hook is engaged with the lifting lug of the pressure vessel 5. The lifting cylinder 131 is started simultaneously, driving the support rod 132 and the mounting plate 133 to rise smoothly along the guide column 12 until the clamping cylinder 22 is aligned with the middle height of the pressure vessel 5 and then stops. The clamping cylinders 22 on both sides then control the V-shaped plates 21 on both sides to retract inward simultaneously, and the V-shaped plates 21 are tightly attached to the outer wall of the pressure vessel 5. At this time, the pressure vessel 5 will cause the trigger column 311 to rotate downward around the hinge hole 212, thereby squeezing the trigger plate 312 to rotate around the hinge point between the trigger plate 312 and the V-shaped plate 21. The spring 313 is stretched elastically, reducing the impact force at the moment of clamping. The piston rod 331 retracts into the hydraulic cylinder 332 simultaneously. During the retraction process... The damping force and the elastic force of spring 313 work together to achieve progressive loading and dynamic buffering of clamping force. When the pressure vessel 5 is lifted, the support plate 322 remains in contact with the surface of the transport vehicle, the piston rod 3211 extends out from the inside of the hydraulic cylinder 3212, and the transport vehicle begins to rebound instantaneously. Since the support plate 322 remains in contact with the surface of the transport vehicle, the support plate 322 drives the hydraulic cylinder 3212 to rise. At this time, it will continuously be subjected to the damping force of the piston rod 3211 inside the hydraulic cylinder 3212, which increases with the increase of the rebound displacement, thereby avoiding secondary impact caused by excessive rebound. After the pressure vessel 5 is stably lifted, the control screw motor 111 drives the guide slider 114 to move precisely along the crossbeam 14 to directly above the conveying track 4. The control drive motor 115 lowers the wire rope 116 so that the pressure vessel 5 is unloaded onto the conveying track 4. The pressure vessel 5 is then transported along the conveying track 4 to the designated work station.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A refrigerant pressure vessel hoisting and conveying mechanism, characterized in that: The system includes a hoisting mechanism (1), a clamping mechanism (2), a buffer mechanism (3), and a conveying track (4). The hoisting mechanism (1) includes a hoisting drive assembly (11), a pair of guide columns (12), a pair of lifting assemblies (13), and a crossbeam (14). The two ends of the crossbeam (14) are detachably mounted on the top of the pair of guide columns (12). The hoisting drive assembly (11) is located at the top of the crossbeam (14) and is slidably connected to the crossbeam (14) for displacement along the crossbeam (14) to align and hoist the pressure vessel (5). The pair of lifting assemblies (13) are located on the pair of guide columns (12). The lifting assemblies (13) are detachably connected to the clamping mechanism (2) for driving the clamping mechanism (2) to slide along the guide columns (12). The clamping mechanism (2) includes a pair of opposing V-shaped plates (21) for clamping the cylindrical outer wall of the pressure vessel (5); The buffer mechanism (3) includes a clamping buffer mechanism (31) and a bottom buffer mechanism (32). The clamping buffer mechanism (31) is located on the surface of the V-shaped plate (21) and is used to fit the curved surface of the pressure vessel (5). The bottom buffer mechanism (32) is located below the clamping mechanism (2) and is used to bear the elastic impact load of the carrier rebound process after the pressure vessel (5) is lifted. The conveying track (4) is located on the ground and extends horizontally to carry the pressure vessel (5) and guide it to the designated work station.

2. The refrigerant pressure vessel hoisting and conveying mechanism according to claim 1, characterized in that: The clamping mechanism (2) further includes a pair of clamping cylinders (22), several connecting rods (23) and a pair of support platforms (24). The pair of clamping cylinders (22) are detachably mounted on the top of the lifting assembly (13). The output end of the clamping cylinder (22) is detachably connected to the V-shaped plate (21) to drive the V-shaped plate (21) to clamp the pressure vessel (5). The support platform (24) is located at the lower part of the V-shaped plate (21) and is fixedly connected to the V-shaped plate (21) through several connecting rods (23). The bottom of the support platform (24) is in contact with the plane of the bottom carrier of the pressure vessel (5) to support the pressure vessel (5). The bottom of the support platform (24) has a bottom groove (241). The bottom buffer mechanism (32) is detachably installed inside the bottom groove (241) to absorb and buffer the impact load generated by the elastic rebound of the carrier.

3. The refrigerant pressure vessel hoisting and conveying mechanism according to claim 1, characterized in that: The clamping buffer mechanism (31) includes a trigger post (311), a trigger plate (312), and a pair of springs (313). The lower clamping wing of the V-shaped plate (21) has a slot (211), and a hinge hole (212) is provided at the lower part of the slot (211). The side of the trigger post (311) has a hinge end (3111) that matches the hinge hole (212). The trigger post (311) is hinged to the hinge hole (212) of the V-shaped plate (21). The width of the slot (211) is the same as the height of the trigger post (311). The length is less than the diameter of the trigger post (311); one end of the trigger plate (312) is hinged to the lower part of the lower clamping wing of the V-shaped plate (21), and the plate surface of the other end is detachably connected to one end of the spring (313). The other end of the spring (313) is detachably connected to the top of the side of the lower clamping wing of the V-shaped plate (21) that does not contact the pressure vessel (5); the bottom of the trigger post (311) abuts against the upper surface of the trigger plate (312) and is used to squeeze the trigger plate (312) around the hinge point after the V-shaped plate (21) clamps the pressure vessel (5).

4. The refrigerant pressure vessel hoisting and conveying mechanism according to claim 3, characterized in that: The trigger plate (312) is provided with a gas-liquid damper (33) on the side away from the V-shaped plate (21). The gas-liquid damper (33) includes a piston rod (331) and a hydraulic cylinder (332). The upper end of the piston rod (331) is hinged to the side of the trigger plate (312) away from the V-shaped plate (21), and the lower end of the piston rod (331) extends into the hydraulic cylinder (332) and slides with its inner wall to form a buffer damping structure. The bottom of the clamping mechanism (2) is provided with a support platform (24), and the lower part of the hydraulic cylinder (332) is hinged to the upper part of the support platform (24).

5. The refrigerant pressure vessel hoisting and conveying mechanism according to claim 2, characterized in that: The bottom buffer mechanism (32) includes a second gas-liquid damper (321), a support plate (322), and a pair of limiting platforms (323). The second gas-liquid damper (321) includes a second piston rod (3211) and a second hydraulic cylinder (3212). The upper end of the second piston rod (3211) is detachably connected to the upper end of the bottom groove (241) of the support platform (24), and the lower end extends into the second hydraulic cylinder (3212) and slides against its inner wall to form a buffer damping structure. The support plate (322) is detachably installed at the bottom of the second hydraulic cylinder (3212). The pair of limiting platforms (323) are fixedly connected to the upper end of the bottom groove (241). The pair of limiting platforms (323) are respectively sleeved on the outer shaft of the second hydraulic cylinder (3212). The inner side of the limiting platform (323) is slidably connected to the outer side of the second hydraulic cylinder (3212) to limit the shaking of the second hydraulic cylinder (3212) during the pressure process.

6. The refrigerant pressure vessel hoisting and conveying mechanism according to claim 5, characterized in that: The support plate (322) has a magnet (324) on its side wall, which is attracted and attached to a magnet (242) on one side wall of the bottom groove (241) to maintain the initial installation stability of the hydraulic cylinder (3212); the support plate (322) has a number of magnets (325) on its bottom surface, which keep the support plate (322) in contact with the surface of the vehicle through magnetic attraction, and are used to linearly transmit the rebound force of the vehicle when the vehicle rebounds; the total magnetic attraction force of the number of magnets (325) is greater than the magnetic attraction force between magnet (324) and magnet (242).

7. The refrigerant pressure vessel hoisting and conveying mechanism according to claim 4, characterized in that: The surface of the V-shaped plate (21) that holds the wing plate in contact with the pressure vessel (5) is provided with a U-shaped mounting groove (213). The U-shaped mounting groove (213) is embedded with a buffer airbag (214). The hydraulic cylinder (332) is provided with a compensation air chamber. The buffer airbag (214) and the compensation air chamber of the hydraulic cylinder (332) inside the gas-liquid damper (33) are connected through a pipeline (215).

8. The refrigerant pressure vessel hoisting and conveying mechanism according to claim 5, characterized in that: The surface of the V-shaped plate (21) that holds the wing plate in contact with the pressure vessel (5) is provided with a U-shaped mounting groove (216). The U-shaped mounting groove (216) is embedded with a buffer airbag (217). The hydraulic cylinder (3212) is provided with a compensation air chamber. The buffer airbag (217) and the compensation air chamber of the hydraulic cylinder (3212) inside the gas-liquid damper (321) are connected through a pipeline (218).

9. The refrigerant pressure vessel hoisting and conveying mechanism according to claim 1, characterized in that: The hoisting drive assembly (11) includes a lead screw motor (111), a lead screw (112), a lead screw support end (113), a guide slider (114), a drive motor (115), and several wire ropes (116). The input end of the lead screw motor (111) is coaxially connected to the lead screw (112). The guide slider (114) has a threaded hole inside, and the guide slider (114) is threadedly driven to the lead screw (112) through the threaded hole. The lead screw motor (111) is detachably mounted on one end of the crossbeam (14), and the lead screw support end (113) is located at the other end of the crossbeam (14). The lead screw (112)... One end away from the lead screw motor (111) is rotatably connected to the lead screw support end (113); the drive motor (115) is detachably installed on the upper part of the guide slider (114), and a drum is coaxially fixed at the output end of the drive motor (115), and several steel wire ropes (116) are wound on the drum; the bottom end of the steel wire rope (116) is provided with a hook for hanging the lifting lug of the pressure vessel (5); the lead screw motor (111) drives the lead screw (112) to rotate, causing the guide slider (114) to move back and forth along the crossbeam (14), which is used to adjust the horizontal position of the bracket on the crossbeam (14) to correspond to the position of the pressure vessel (5).

10. A refrigerant pressure vessel hoisting and conveying mechanism according to claim 1, characterized in that: The lifting assembly (13) includes a lifting cylinder (131), a support rod (132), and a mounting plate (133). The lifting cylinder (131) is vertically mounted on the bottom of the guide column (12). The output end of the lifting cylinder (131) is detachably connected to the bottom of the support rod (132). The top end of the support rod (132) is fixedly connected to the mounting plate (133). One side of the mounting plate (133) is in contact with the guide column (12). The side of the mounting plate (133) in contact with the guide column (12) is provided with a sliding boss. The guide column (12) has a sliding groove extending in the vertical direction. The sliding boss is embedded in the sliding groove and is used for the mounting plate (133) to slide in connection with the guide column (12). The upper part of the mounting plate (133) is used to install the clamping mechanism (2).

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