A pressure vessel welding device facilitating docking

Abstract

The present invention discloses a pressure vessel welding device that is convenient for docking, and relates to the field of welding technology; in order to solve the problem of docking accuracy; specifically includes a base, the top of the base is provided with a transverse feeding part for loading and unloading the pressure vessel, the top of the base is fixedly installed with a gantry, the bottom of the gantry is matched with a support plate through the transmission of the lifting part, the bottom of the support plate is provided with a docking part, and a welding gun for fixing the pressure vessel is fixedly installed on the inner side wall of one side of the gantry. The present invention sets multiple groups of circular array pressure contact wheels, and each group of pressure contact wheels adopts two arrangements, which respectively contact the side walls of the tank body and the head of the pressure vessel, thereby ensuring the coaxiality of the tank body and the head of the pressure vessel in the form of side limit, and the pressure contact wheel can also make the pressure vessel rotate, so that multi-angle limit can be performed during the rolling process, thereby further ensuring the coaxiality and ensuring the subsequent welding quality.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a welding device for pressure vessels that is convenient for butt jointing. Background Art

[0002] When manufacturing a pressure vessel, it is necessary to perform circumferential welding on the head and the tank body. And during this welding process, due to process requirements, horizontal operation is not allowed.

[0003] For example, after retrieval, a patent with the Chinese patent publication number CN207104067U discloses a welding device for vertical circumferential seams of pressure vessels, including a base. It is characterized in that: a first switch is installed on the edge of the upper surface of the base, the input end of the first switch is connected to the output end of an external power source, a sliding seat is arranged in the middle chute of the base, a pressure vessel is arranged in a locator on the upper surface of the sliding seat, a side frame plate is arranged on the left side of the rear end of the base, and a positioning cylinder is arranged in the mounting hole of the horizontal part of the side frame plate.

[0004] The above patent has the following deficiencies: it cannot achieve precise butt jointing of the tank body and the head. Since the wall thickness of the entire pressure vessel is relatively thin, inaccurate coaxial butt jointing of the tank body and the head will cause subsequent leakage of the pressure vessel.

[0005] Therefore, the present invention proposes a welding device for pressure vessels that is convenient for butt jointing. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a welding device for pressure vessels that is convenient for butt jointing.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A welding device for pressure vessels that is convenient for butt jointing, including a base,

[0009] A horizontal feeding part for loading and unloading the pressure vessel is arranged on the top of the base. A gantry is fixedly installed on the top of the base. The bottom of the gantry is in transmission cooperation with a support plate through a lifting part. A butt joint part is arranged at the bottom of the support plate. And a welding torch for fixedly installing the pressure vessel is fixedly installed on the inner side wall of one side of the gantry;

[0010] The butt joint part includes a driving ring rotatably connected to the top of the support plate, a first driving shaft arranged above the support plate, and at least three groups of limiting components slidably and circularly arrayed on the side wall of the support plate;

[0011] The limiting component includes a bracket slidably connected to the side wall of the support plate and a wheel member connected to the inner side of the bracket through a second shaft;

[0012] The wheel member includes two pressure contact wheels fixedly mounted on the outer wall of the second shaft and respectively in contact and cooperation with the side wall of the tank body of the pressure vessel and the side wall of the head of the pressure vessel, and a grinding wheel movably connected to the side wall of the second shaft and located between the two pressure contact wheels;

[0013] A fitting groove is formed in the inner wall of the driving ring, and the bracket is movably and limit-fitted to the inner wall of the fitting groove through a limit post fixedly installed at its top.

[0014] Preferably: A toothed piece A is fixedly installed on the end face of the grinding wheel. Shaft one and driving shaft two are respectively rotatably connected to the inner walls on both sides of the second shaft of the bracket. Shaft one is in transmission cooperation with toothed piece A through toothed piece B, and shaft one, shaft two and driving shaft two are in co-directional transmission and cooperation through a synchronous transmission assembly.

[0015] Further: The fitting groove is composed of an inclined groove and an arc groove, and teeth that can mesh with each other are provided on the outer walls of the driving shaft two and the driving ring.

[0016] On the basis of the foregoing solution: The grinding wheel is composed of a wheel body and a plurality of grinding blocks slidably connected to the side wall of the wheel body through sliding rods, and the sliding rods are connected to the wheel body through spring one.

[0017] A better solution in the foregoing solution is: A spiral groove is formed in the side wall of the driving shaft one. The driving ring is movably and limit-fitted to the inner wall of the spiral groove through a limit protrusion fixedly installed on its inner wall, and a piston is fixedly installed at the bottom of the driving shaft one. The opposite sides of the piston and the support plate are connected through spring two.

[0018] As a further solution of the present invention: A cylinder body is fixedly installed on the outer wall of the support plate. The piston is slidably fitted to the inner wall of the cylinder body. Both the piston and the driving shaft one are of cavity structures, and a pressure sensor communicating with the inner cavity of the driving shaft one is installed on the top side wall of the driving shaft one.

[0019] At the same time, the lifting part includes a lifting plate and a telescopic device. The lifting plate is rotatably connected to the top of the driving shaft one. The telescopic device is fixedly installed on the top of the gantry, and the telescopic end of the telescopic device is fixedly installed on the top outer wall of the lifting plate.

[0020] As a preferred one of the present invention: A guide rod is fixedly installed on the top of the support plate. The guide rod is slidably connected to the inner walls of the lifting plate and the gantry.

[0021] At the same time, the transverse feeding part includes a limiting cylinder, a motor and a lead screw. The limiting cylinder includes an outer shell and an inner liner that are rotatably connected to each other. The size of the inner liner fits the outer diameter of the pressure vessel. The outer shell is slidably connected above the base.

[0022] As a more optimal solution of the present invention: The motor is fixedly installed on the outer wall of the top of the base. The lead screw is connected to the output shaft of the motor through a coupling, and the outer wall of the lead screw is threadedly connected to the bottom of the housing.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. In the present invention, by arranging multiple groups of circularly arrayed pressure contact wheels, and two are arranged in each group of pressure contact wheels, which respectively contact the side walls of the tank body and the head of the pressure vessel, the coaxiality of the tank body and the head of the pressure vessel is ensured in the form of side limit. Moreover, the pressure contact wheels can also make the pressure vessel rotate, so that multi-angle limit can be carried out during the rolling process, further ensuring the coaxiality and guaranteeing the subsequent welding quality.

[0025] 2. In the present invention, by arranging a grinding wheel, it can grind burrs, flash, curled edges, etc. of the butt joint during the positioning and butt joint process, thereby improving the subsequent welding quality. And during the reset process of each component after welding, the grinding wheel can also grind the weld seam, remove burrs, and increase the aesthetics. In addition, the grinding wheel is driven by the tooth piece A, the tooth piece B, and the shaft one, and its rotation direction is opposite to that of the pressure contact wheel, so that the relative movement speed between it and the side wall of the pressure vessel can be faster, increasing the grinding efficiency.

[0026] 3. In the present invention, on the basis of driving with the driving ring, the bracket is driven by the cooperation of the cooperation groove and the limiting column, so as to ensure the synchronous movement of the group of brackets, increase the butt joint accuracy. In addition, on this basis, the cooperation groove is set as a combination of an inclined groove and an arc groove, and the driving shaft two and the side wall of the driving ring are provided with mutually meshing teeth, so that while driving the grinding by the rotation of the driving ring, the position of the pressure contact wheel can be maintained, ensuring the reliability of the limit, thus realizing the power integration, simplifying the power source arrangement, reducing the manufacturing cost and being convenient for volume optimization.

[0027] 4. In the present invention, by setting the grinding wheel as a combination of a grinding block and a wheel body, the "feeding" of the grinding block is controlled by centrifugal force, thus realizing a flexible grinding pressure, so that the grinding pressure can be controlled according to the rotation speed. While ensuring that the grinding wheel can grind the butt joint and the weld seam, it can also prevent the weld seam from being damaged, increasing the reliability of the device.

[0028] 5. In the present invention, by using the lifting of the driving shaft one as the drive, and using the spiral groove and the limiting protrusion as the drive input of the driving ring, the lifting of the support plate and the rotational drive of the driving ring can be integrated, further simplifying the power source arrangement, reducing the manufacturing cost and being convenient for volume optimization.

[0029] 6. In the present invention, by providing a cylinder block, the drive shaft I and the piston are both arranged in a hollow structure, and at the same time, a pressure sensor is additionally provided. Thus, by utilizing the relative movement characteristics between the components under comprehensive drive, pressurization inside the pressure vessel during the grinding process is achieved, preventing grinding impurities from entering the joint gaps of the pressure vessel, improving the subsequent grinding quality. Also, during the reset process after welding, negative pressure can be automatically applied to the inner cavity of the pressure vessel, thereby enabling the airtightness detection of the pressure vessel, simplifying the subsequent airtightness detection steps, and increasing the production efficiency of the pressure vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 FIG. 6 is a schematic diagram of the overall structure of a pressure vessel welding device for easy docking according to the present invention;

[0031] Figure 2 FIG. 10 is a schematic diagram of the docking part structure of a pressure vessel welding device for easy docking according to the present invention;

[0032] Figure 3 FIG. 14 is a schematic cross-sectional view of the limiting component of a pressure vessel welding device for easy docking according to the present invention;

[0033] Figure 4 FIG. 18 is a schematic diagram of the limiting component of a pressure vessel welding device for easy docking according to the present invention;

[0034] Figure 5 FIG. 22 is a schematic diagram of the driving ring of a pressure vessel welding device for easy docking according to the present invention;

[0035] Figure 6 FIG. 26 is a schematic cross-sectional view of the grinding wheel of a pressure vessel welding device for easy docking according to the present invention;

[0036] Figure 7 FIG. 30 is a schematic partial cross-sectional view of a pressure vessel welding device for easy docking according to the present invention;

[0037] Figure 8 FIG. 34 is a schematic diagram of the lifting part structure of a pressure vessel welding device for easy docking according to the present invention;

[0038] Figure 9 FIG. 38 is a schematic diagram of the horizontal feeding part structure of a pressure vessel welding device for easy docking according to the present invention.

[0039] In the figure: 1 - base, 2 - horizontal feeding part, 3 - pressure vessel, 4 - welding torch, 5 - gantry, 6 - lifting part, 7 - support plate, 8 - docking part, 9 - limit component, 10 - driving ring, 11 - first driving shaft, 12 - bracket, 13 - first shaft, 14 - synchronous transmission component, 15 - second shaft, 16 - second driving shaft, 17 - pressure contact wheel, 18 - grinding wheel, 19 - tooth piece A, 20 - tooth piece B, 21 - mating groove, 22 - limit post, 23 - inclined groove, 24 - arc groove, 25 - wheel body, 26 - first spring, 27 - sliding rod, 28 - grinding block, 29 - air pressure sensor, 30 - spiral groove, 31 - limit projection, 32 - cylinder block, 33 - second spring, 34 - piston, 35 - lifting plate, 36 - guiding rod, 37 - telescopic device, 38 - limit cylinder, 39 - motor, 40 - lead screw. Detailed implementation manners

[0040] The technical solutions of the present invention will be further described in detail below in conjunction with the specific implementation manners.

[0041] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0042] Embodiment 1:

[0043] A welding device for a pressure vessel that is convenient for docking, as Figures 1-9 shown, includes a base 1. A horizontal feeding part 2 for loading and unloading the pressure vessel 3 is arranged on the top of the base 1. The gantry 5 is fixed to the top of the base 1 by bolts. The bottom of the gantry 5 is in transmission cooperation with a support plate 7 through a lifting part 6. A docking part 8 is arranged at the bottom of the support plate 7. And a welding torch 4 for welding the pressure vessel 3 is fixed to the inner side wall of one side of the gantry 5 by bolts.

[0044] The docking part 8 includes a driving ring 10 rotatably connected to the top of the support plate 7, a first driving shaft 11 arranged above the support plate 7, and at least three groups of limit components 9 slidably and circularly arrayed on the side wall of the support plate 7.

[0045] The limit component 9 includes a bracket 12 slidably connected to the side wall of the support plate 7 and a wheel member connected to the inner side of the bracket 12 through a second shaft 15.

[0046] The wheel member includes two pressure contact wheels 17 fixed to the outer wall of the second shaft 15 and respectively contacting and cooperating with the side wall of the tank body of the pressure vessel 3 and the side wall of the head of the pressure vessel 3, and a grinding wheel 18 movably connected to the side wall of the second shaft 15 and located between the two pressure contact wheels 17.

[0047] The inner wall of the driving ring 10 is provided with a fitting groove 21, and the bracket 12 is movably and limit-fitted to the inner wall of the fitting groove 21 through a limit post 22 welded to its top.

[0048] When the device is in use, the pressure vessel 3 can be placed in the horizontal feeding part 2, and the relative positions of the tank body and the head of the pressure vessel 3 are approximately correct. The horizontal feeding part 2 conveys the pressure vessel 3 to the docking part 8. The lifting part 6 controls the support plate 7 to descend. After the support plate 7 is in close contact with the top opening flange of the head, the driving ring 10 rotates. Through the cooperation of the fitting groove 21 and the limit post 22, a plurality of brackets 12 synchronously contract inward until the pressure contact wheels 17 contact the side walls of the tank body and the head of the pressure vessel 3. Subsequently, the second shaft 15 drives the pressure contact wheels 17 to rotate, so as to drive the whole pressure vessel 3 to rotate through friction. While rotating, the three groups of pressure contact wheels 17 can ensure the coaxiality of the pressure vessel 3 by limiting the side walls of the tank body and the head of the pressure vessel 3. And while rotating, the grinding wheel 18 also rotates, so as to grind the joint.

[0049] In this device, by arranging multiple groups of pressure contact wheels 17 in a circular array, and two are arranged in each group of pressure contact wheels 17, which respectively contact the side walls of the tank body and the head of the pressure vessel 3, the coaxiality of the tank body and the head of the pressure vessel 3 is ensured in the form of side limit. And the pressure contact wheels 17 can also make the pressure vessel 3 rotate, so as to perform multi-angle limit during the rolling process, further ensuring the coaxiality and ensuring the subsequent welding quality.

[0050] To solve the grinding problem; as Figure 3 、 4 shown, a tooth piece A19 is welded to the end face of the grinding wheel 18. The inner walls of the bracket 12 on both sides of the second shaft 15 are respectively rotatably connected with a first shaft 13 and a driving second shaft 16. The first shaft 13 is drivingly matched with the tooth piece A19 through a tooth piece B20, and the first shaft 13, the second shaft 15 and the driving second shaft 16 are drivingly transmitted and matched in the same direction through a synchronous transmission component 14. The synchronous transmission component 14 can be a chain drive or a belt drive, which is a prior art and will not be elaborated in this embodiment.

[0051] When the pressure contact wheels 17 contact the pressure vessel 3, the driving second shaft 16 rotates, so as to drive the second shaft 15 and the first shaft 13 to rotate through the synchronous transmission component 14. The rotation of the second shaft 15 drives the pressure contact wheels 17 to rotate, so that the pressure vessel 3 rotates self. The rotation of the first shaft 13 drives the grinding wheel 18 to rotate through the tooth piece B20 and the tooth piece A19, so as to grind.

[0052] In this device, by setting the grinding wheel 18, it can grind burrs, flash, curled edges, etc. of the weld seam during the positioning and docking process, thereby improving the subsequent welding quality. And during the reset process of each component after welding, the grinding wheel 18 can also grind the weld seam to remove burrs and increase the aesthetics. In addition, the grinding wheel 18 is driven by the tooth piece A 19, the tooth piece B 20, and the shaft one 13, and its rotation direction is opposite to that of the pressure contact wheel 17, so that the relative movement speed between it and the side wall of the pressure vessel 3 can be faster, increasing the grinding efficiency.

[0053] To solve the problem of comprehensive drive; as Figure 5 shown, the mating groove 21 is composed of an inclined groove 23 and an arc groove 24, and the outer walls of the drive shaft two 16 and the drive ring 10 are provided with teeth that can mesh with each other.

[0054] In the initial state, the limit post 22 is located at the outermost side of the inclined groove 23. As the drive ring 10 rotates, it is limited by the inclined groove 23, causing the bracket 12 to move inward. When it moves to the junction of the inclined groove 23 and the arc groove 24, at this time, the pressure contact wheel 17 is in close contact with the side wall of the pressure vessel 3, and the teeth on the outer walls of the drive shaft two 16 and the drive ring 10 mesh with each other. As the drive ring 10 continues to rotate, it can drive the drive shaft two 16 to rotate while keeping the position of the pressure contact wheel 17 and the side wall of the pressure vessel 3 unchanged.

[0055] In this device, on the basis of using the drive ring 10 as the drive, the bracket 12 is driven by the cooperation of the mating groove 21 and the limit post 22, so as to ensure the synchronous movement of the group of brackets 12 and increase the docking accuracy. In addition, on this basis, the mating groove 21 is set as a combination of an inclined groove 23 and an arc groove 24, and the side walls of the drive shaft two 16 and the drive ring 10 are provided with teeth that can mesh with each other. Thus, while driving the grinding by rotating the drive ring 10, it can also ensure the position of the pressure contact wheel 17 is maintained, ensuring the limit reliability, thereby realizing the power integration, simplifying the power source layout, reducing the manufacturing cost, and facilitating the volume optimization.

[0056] To solve the problem of weld damage; as Figure 6 shown, the grinding wheel 18 is composed of a wheel body 25 and a plurality of grinding blocks 28 slidably connected to the side wall of the wheel body 25 through slide rods 27, and the slide rods 27 are connected to the wheel body 25 through the first spring 26.

[0057] When the wheel body 25 does not rotate, the slide rod 27 is pulled by the first spring 26, so that the grinding block 28 fits against the side wall of the wheel body 25, and the grinding block 28 does not contact the side wall of the pressure vessel 3 or the weld seam at this time. When the wheel body 25 rotates, the slide rod 27 and the grinding block 28 move outward under the action of centrifugal force for grinding.

[0058] Since the grinding wheel 18 needs to contact and grind the side wall of the pressure vessel 3 when the docking is completed and before welding, and after welding, the weld will bulge outward. At this time, if the size of the grinding wheel 18 remains unchanged, the weld will be completely ground away, resulting in welding failure.

[0059] In this device, by setting the grinding wheel 18 as a combination of the grinding block 28 and the wheel body 25, and using the centrifugal force to control the "feeding" of the grinding block 28, a flexible grinding pressure is achieved. Thus, the grinding pressure can be controlled according to the rotational speed. While ensuring that the grinding wheel 18 can grind the joint and the weld, it can also prevent the weld from being damaged, increasing the reliability of the device.

[0060] To solve the driving problem; as Figure 7 shown, a spiral groove 30 is formed on the side wall of the first driving shaft 11. The driving ring 10 is movably and limit-fitted to the inner wall of the spiral groove 30 through a limit projection 31 welded to its inner wall. And a piston 34 is welded to the bottom of the first driving shaft 11. The opposite side of the piston 34 and the support plate 7 is connected by a second spring 33.

[0061] Before the support plate 7 descends, the first driving shaft 11 supports the self-weights of the support plate 7, the driving ring 10 and the connecting member through the elastic force of the second spring 33, thereby driving their overall lifting and lowering. Until the support plate 7 contacts the flange opening above the pressure vessel 3, the support plate 7 is limited. At this time, when the first driving shaft 11 continues to descend, it will drive the driving ring 10 to rotate through the cooperation of the spiral groove 30 and the limit projection 31, and the second spring 33 will be gradually stretched, so that the support plate 7 is tightly fitted with the flange opening of the pressure vessel 3.

[0062] In this device, by using the lifting and lowering of the first driving shaft 11 as the drive, and using the spiral groove 30 and the limit projection 31 as the drive input for the driving ring 10, the lifting and lowering of the support plate 7 and the rotational drive of the driving ring 10 can be integrated, further simplifying the layout of the power source, reducing the manufacturing cost and facilitating the volume optimization.

[0063] To solve the problem of sealing detection, as Figure 7 shown, a cylinder block 32 is welded to the outer wall of the support plate 7. The piston 34 is slidably fitted to the inner wall of the cylinder block 32. Both the piston 34 and the first driving shaft 11 are of cavity structure, and a pressure sensor 29 communicating with the inner cavity of the first driving shaft 11 is installed on the top side wall of the first driving shaft 11.

[0064] After the driving ring 10 rotates until the pressure contact wheel 17 is in close contact with the side wall of the pressure vessel 3, it needs to continue to rotate to make the pressure contact wheel 17 and the grinding wheel 18 rotate. During this process, the piston 34 will move downward relative to the cylinder block 32, so that the internal cavity pressure of the pressure vessel 3 increases. At the same time, the second spring 33 is stretched. The support plate 7 contacts and seals the flange opening of the pressure vessel 3. A sealing gasket can be added to the flange opening in advance. Since it is not welded at this time, there will be a gap between the head and the tank body of the pressure vessel 3. Under the action of pressure, the gas in the internal cavity of the pressure vessel 3 will be discharged outward from the gap, so that when the grinding wheel 18 grinds, the ground dust impurities, etc. will be blown outwards; at the same time, when the driving ring 10 reverses during the reset process after welding, the piston 34 moves upward, which will cause a negative pressure in the internal cavity of the pressure vessel 3. Thus, the negative pressure can be monitored by the air pressure sensor 29. After maintaining for a period of time, the airtightness of the pressure vessel 3 can be detected according to whether the negative pressure changes, so as to detect the welding quality.

[0065] In this device, by setting the cylinder block 32, both the driving shaft 11 and the piston 34 are set as hollow structures, and at the same time, an air pressure sensor 29 is added. Thus, by utilizing the relative motion characteristics between the components under comprehensive driving, pressurization inside the pressure vessel 3 during the grinding process is achieved, preventing grinding impurities from entering the joint gap of the pressure vessel 3, improving the subsequent grinding quality. Also, a negative pressure can be automatically applied to the internal cavity of the pressure vessel 3 during the reset process after welding, so as to detect the airtightness of the pressure vessel 3, simplifying the subsequent airtightness detection steps and increasing the production efficiency of the pressure vessel.

[0066] To solve the lifting problem, as Figure 8 shown, the lifting part 6 includes a lifting plate 35 and a telescopic device 37. The lifting plate 35 is rotatably connected to the top of the driving shaft 11. The telescopic device 37 is fixed to the top of the gantry 5 by bolts, and the telescopic end of the telescopic device 37 is fixed to the top outer wall of the lifting plate 35 by bolts. A guide rod 36 is fixed to the top of the support plate 7 by bolts, and the guide rod 36 is slidably connected to the inner walls of the lifting plate 35 and the gantry 5.

[0067] When the telescopic device 37 expands and contracts, it can drive the lifting plate 35 to lift and lower, and the guide rod 36 can guide the lifting and lowering of the lifting plate 35 and the support plate 7.

[0068] The specific usage steps of this device are as follows:

[0069] S1: First, place the tank body of the pressure vessel 3 on the horizontal feeding part 2, and place the seal of the pressure vessel 3 on the tank body to ensure approximate alignment;

[0070] S2: Subsequently, the horizontal feeding part 2 transports the pressure vessel 3 to the lower part of the support plate 7;

[0071] S3: The expander 37 extends, drives the support plate 7 to descend through the lifting plate 35. Until the support plate 7 contacts the flange opening on the upper side of the pressure vessel 3, the support plate 7 is limited. At this time, the first driving shaft 11 continues to descend, and the driving ring 10 rotates through the cooperation of the spiral groove 30 and the limiting protrusion 31;

[0072] S4: When the driving ring 10 rotates, first its inclined groove 23 cooperates with the limiting post 22 to drive multiple brackets 12 to contract inward synchronously. Until the pressure contact wheels 17 tightly contact the side wall of the pressure vessel 3, at the same time the second driving shaft 16 meshes with the teeth of the driving ring 10, and at this time the limiting post 22 is located at the junction of the inclined groove 23 and the arc groove 24;

[0073] S4: Subsequently, the first driving shaft 11 continues to descend, the driving ring 10 continues to rotate, the limiting post 22 cooperates with the arc groove 24 to ensure the position of the brackets 12. At the same time, the second driving shaft 16 also rotates, thereby driving the first shaft 13 and the second shaft 15 to rotate through the synchronous transmission assembly 14. The rotation of the second shaft 15 can drive the pressure contact wheels 17 to rotate, thereby driving the pressure vessel 3 to rotate to achieve rotational positioning. At the same time, the rotation of the first shaft 13 will drive the grinding wheel 18 to rotate through the tooth piece B20 and the tooth piece A19 to achieve seam grinding. Until the limiting post 22 moves to half of the total stroke of the arc groove 24, the pressure vessel 3 rotates at least 1.5 circles, and at this time the second spring 33 is in a stretched state, and the support plate 7 is tightly combined with the flange opening;

[0074] S4: At this time, the welding torch 4 starts welding, the first driving shaft 11 continues to descend, the driving ring 10 continues to rotate, so that the pressure vessel 3 continues to rotate. Until reaching the formation limit of the arc groove 24, a processing step is completed;

[0075] S5: Subsequently, the first driving shaft 11 starts to move upward. Until the limiting post 22 moves to half of the total stroke of the arc groove 24 and stops. At this time, due to the relative movement of the piston 34 and the cylinder block 32 in the pressure vessel 3, a negative pressure appears in the pressure vessel 3, maintaining the negative pressure, and realizing the airtightness detection of the pressure vessel 3 through the monitoring of the pressure by the air pressure sensor 29;

[0076] S6: Subsequently, the first driving shaft 11 continues to move upward, the driving ring 10 and the pressure vessel 3 continue to rotate. This process is for seam grinding. Until the limiting post 22 moves to the junction of the arc groove 24 and the inclined groove 23, the first driving shaft 11 continues to move upward, and each component resets in the reverse direction.

[0077] Embodiment 2:

[0078] A pressure vessel welding device convenient for docking, such as Figure 9As shown in the figure, in order to solve the problem of loading and unloading, the following improvements are made on the basis of Embodiment 1: The horizontal feeding part 2 includes a limit cylinder 38, a motor 39 and a lead screw 40. The limit cylinder 38 includes an outer shell and an inner liner that are rotatably connected to each other. The size of the inner liner fits the outer diameter of the pressure vessel 3. The outer shell is slidably connected above the base 1. The motor 39 is fixed to the top outer wall of the base 1 by bolts. The lead screw 40 is connected to the output shaft of the motor 39 through a coupling, and the outer wall of the lead screw 40 is threadedly connected to the bottom of the outer shell.

[0079] When this embodiment is in use, the pressure vessel 3 can be placed in the inner liner of the limit cylinder 38. Starting the motor 39 can drive the lead screw 40 to rotate, and then drive the pressure vessel 3 to move horizontally.

[0080] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A pressure vessel fixing and installation device that is easy to dock, comprising a base (1), characterized in that: The top of the base (1) is provided with a transverse feeding portion (2) for loading and unloading the pressure vessel (3); a gantry (5) is fixedly mounted on the top of the base (1); the bottom of the gantry (5) is coupled with a support plate (7) through a lifting portion (6); a docking portion (8) is provided at the bottom of the support plate (7); and a welding gun (4) for fixing the pressure vessel (3) is fixedly mounted on an inner side wall of one side of the gantry (5); The docking portion (8) comprises a driving ring (10) rotatably connected to the top of the support plate (7), a driving shaft (11) arranged above the support plate (7), and at least three groups of circular array-type limiter components (9) slidably matched to the side wall of the support plate (7); The limiting assembly (9) comprises a bracket (12) slidably connected to the side wall of the support plate (7) and a wheel connected to the inner side of the bracket (12) via a second shaft (15); The wheel component comprises two pressure contact wheels (17) fixed to the outer wall of the second shaft (15) and respectively contacting and cooperating with the side wall of the tank body of the pressure vessel (3) and the side wall of the head of the pressure vessel (3), and a grinding wheel (18) movably connected to the side wall of the second shaft (15) and located between the two pressure contact wheels (17); The inner wall of the driving ring (10) is provided with a matching groove (21), and the bracket (12) is movably limited and matched with the inner wall of the matching groove (21) through a limiting column (22) fixedly installed on the top of the bracket (12); The end surface of the grinding wheel (18) is fixedly mounted with a tooth piece A (19); the inner walls of the bracket (12) located on both sides of the shaft (15) are rotatably connected to the shaft (13) and the driving shaft (16); the shaft (13) is driven and matched with the tooth piece A (19) through the tooth piece B (20); and the shaft (13), the shaft (15) and the driving shaft (16) are driven and matched in the same direction through the synchronous transmission assembly (14); The matching groove (21) is composed of an oblique groove (23) and an arc groove (24), and the outer wall of the second drive shaft (16) and the outer wall of the drive ring (10) are provided with teeth that can mesh with each other.

2. A pressure vessel fixing and installation device that is easy to dock according to claim 1, characterized in that: The grinding wheel (18) is composed of a wheel body (25) and a plurality of grinding blocks (28) slidably connected to the side wall of the wheel body (25) via a slide rod (27), and the slide rod (27) is connected to the wheel body (25) via a spring 1 (26).

3. A pressure vessel fixing and installation device that is easy to dock according to claim 1, characterized in that: A spiral groove (30) is formed on the side wall of the driving shaft (11), and the driving ring (10) is movably limited and engaged with the inner wall of the spiral groove (30) through a limiting protrusion (31) fixedly mounted on the inner wall of the driving shaft (11), and a piston (34) is fixedly mounted on the bottom of the driving shaft (11), and the piston (34) is connected to the opposite side of the support plate (7) through a spring (33).

4. A pressure vessel fixing and installation device that is easy to dock according to claim 3, characterized in that: A cylinder body (32) is fixedly mounted on the bottom outer wall of the support plate (7), and a piston (34) is slidably fitted on the inner wall of the cylinder body (32). Both the piston (34) and the drive shaft (11) are hollow structures, and an air pressure sensor (29) connected to the inner cavity of the drive shaft (11) is mounted on the top side wall of the drive shaft (11).

5. The pressure vessel fixing and installation device that is easy to dock according to claim 1, characterized in that: The lifting part (6) comprises a lifting plate (35) and a telescopic device (37), wherein the lifting plate (35) is rotatably connected to the top of the driving shaft (11), and the telescopic device (37) is fixedly mounted on the top of the gantry (5), and the telescopic end of the telescopic device (37) is fixedly mounted on the top outer wall of the lifting plate (35).

6. A pressure vessel fixing and installation device that is easy to dock according to claim 5, characterized in that: A guide rod (36) is fixedly mounted on the top of the support plate (7), and the guide rod (36) is slidably connected to the inner wall of the lifting plate (35) and the gantry (5).

7. The pressure vessel fixing and installation device that is easy to dock according to claim 1, characterized in that: The transverse feeding portion (2) comprises a limiting cylinder (38), a motor (39) and a screw (40); the limiting cylinder (38) comprises an outer shell and an inner shell which are rotatably connected to each other; the size of the inner shell matches the outer diameter of the pressure container (3); and the outer shell is slidably connected to the top of the base (1).

8. A pressure vessel fixing and installation device that is easy to dock according to claim 7, characterized in that: The motor (39) is fixedly mounted on the top outer wall of the base (1); the screw rod (40) is connected to the output shaft of the motor (39) via a coupling; and the outer wall of the screw rod (40) is connected to the bottom of the housing via a threaded connection.

Images