Pressure vessel welding device facilitating butt joint

Abstract

The invention discloses a pressure vessel welding device facilitating butt joint, and relates to the technical field of welding. The problem of butt joint accuracy is solved. The device specifically comprises a base, the top of the base is provided with a transverse feeding part used for feeding and discharging a pressure container, a portal frame is fixedly installed at the top of the base, the bottom of the portal frame is in transmission fit with a supporting plate through a lifting part, and the bottom of the supporting plate is provided with a butt joint part; and a welding gun used for fixedly mounting the pressure container is fixedly mounted on the inner side wall of one side of the portal frame. A plurality of groups of pressure contact wheels in a circular array are arranged, and two pressure contact wheels are arranged in each group and are respectively in contact with the side walls of the tank body and the seal head of the pressure vessel, so that the coaxiality of the tank body and the seal head of the pressure vessel is ensured by utilizing a side edge limiting form, and the pressure vessel can also rotate by the pressure contact wheels, so that the coaxiality of the tank body and the seal head of the pressure vessel is ensured. Therefore, multi-angle limiting can be carried out in the rolling process, the coaxiality is further guaranteed, and the follow-up welding quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a pressure vessel welding device that is convenient for butt connection. Background Art

[0002] When manufacturing pressure vessels, the head and the tank body need to be ring-welded, and during this welding process, horizontal operation is not allowed due to process requirements.

[0003] For example, after searching, the Chinese patent publication number CN207104067U discloses a welding device for welding vertical annular seams of pressure vessels, including a base, 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 supply, a sliding seat is provided in the middle slide groove of the base, a pressure vessel is provided in the upper surface locator of the sliding seat, a side frame plate is provided on the left side of the rear end of the base, and a positioning cylinder is provided in the mounting hole of the horizontal part of the side frame plate.

[0004] The above patent has the following deficiencies: it is unable to achieve precise docking of the tank body and the head; since the wall thickness of the entire pressure vessel is relatively thin, the tank body and the head cannot be precisely coaxially docked, which may lead to leakage in subsequent pressure vessels.

[0005] To this end, the present invention provides a pressure vessel welding device that is easy to connect. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to provide a pressure vessel welding device that is easy to connect.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A pressure vessel welding device that is convenient for docking, comprising 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 provided 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 provided on the inner side wall of one side of the gantry; The docking portion includes a driving ring rotatably connected to the top of the support plate, a driving shaft 1 arranged above the support plate, and at least three groups of circular array-type limiter components slidably matched to the side wall of the support plate; The position limiting assembly includes a bracket slidably connected to the side wall of the support plate and a wheel connected to the inner side of the bracket through the second shaft; The wheel member comprises two pressure contact wheels fixed to the outer wall of the second shaft and respectively contacting and cooperating with the side wall of the tank body 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; The inner wall of the driving ring is provided with a matching groove, and the bracket is movably limited and matched with the inner wall of the matching groove through a limiting column fixedly installed on the top of the bracket.

[0008] Preferably: a tooth piece A is fixedly installed on the end face of the grinding wheel, and the inner walls of the bracket on both sides of the shaft two are rotatably connected with the shaft one and the driving shaft two respectively, the shaft one is matched with the tooth piece A through the tooth piece B, and the shaft one, shaft two and driving shaft two are transmitted and matched in the same direction through a synchronous transmission assembly.

[0009] Furthermore: the matching groove is composed of an oblique groove and an arc groove, and the outer wall of the second driving shaft and the outer wall of the driving ring are provided with teeth that can mesh with each other.

[0010] On the basis of the above scheme: 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 a sliding rod, and the sliding rod is connected to the wheel body through a spring.

[0011] A better solution among the above-mentioned solutions is: a spiral groove is opened on the side wall of the driving shaft 1, the driving ring is movably limited to the inner wall of the spiral groove through a limiting protrusion fixedly installed on the inner wall of the driving shaft, and a piston is fixedly installed on the bottom of the driving shaft 1, and the piston is connected to the opposite side of the support plate through spring 2.

[0012] As a further solution of the present invention: a cylinder body is fixedly installed on the outer wall of the support plate, and a piston is slidably fitted on the inner wall of the cylinder body. The piston and the drive shaft 1 are both cavity structures, and an air pressure sensor connected to the inner cavity of the drive shaft 1 is installed on the top side wall of the drive shaft 1.

[0013] At the same time, the lifting part includes a lifting plate and a telescope, the lifting plate is rotatably connected to the top of the driving shaft, the telescope is fixedly installed on the top of the gantry, and the telescopic end of the telescope is fixedly installed on the top outer wall of the lifting plate.

[0014] As a preferred embodiment of the present invention: a guide rod is fixedly installed on the top of the support plate, and the guide rod is slidably connected to the inner wall of the lifting plate and the gantry.

[0015] At the same time, the transverse feeding part includes a limiting cylinder, a motor and a screw rod. The limiting cylinder includes an outer shell and an inner shell that are rotatably connected to each other. The size of the inner shell matches the outer diameter of the pressure vessel, and the outer shell is slidably connected to the top of the base.

[0016] As a more optimal solution of the present invention: the motor is fixedly mounted on the top outer wall of the base, the screw rod is connected to the output shaft of the motor through a coupling, and the outer wall of the screw rod is connected to the bottom of the housing through a thread.

[0017] The beneficial effects of the present invention are: 1. The present invention provides a plurality of groups of circular array pressure contact wheels, and each group of pressure contact wheels has 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 limiting, and the pressure contact wheels can also make the pressure vessel rotate, so that multi-angle limiting can be performed during the rolling process, thereby further ensuring the coaxiality and ensuring the subsequent welding quality.

[0018] 2. The present invention, by setting a grinding wheel, can grind burrs, flashes, curling edges, etc. of the joints during the positioning and docking process, thereby improving the subsequent welding quality, and in the process of resetting each component after welding, the grinding wheel can also grind the weld to remove burrs and increase the aesthetics. In addition, the grinding wheel is driven by tooth A, tooth B, and shaft 1, and its rotation direction is opposite to that of the pressure contact wheel, so that its relative movement speed with the side wall of the pressure vessel can be faster, thereby increasing the grinding efficiency.

[0019] 3. The present invention, based on the driving ring, utilizes the matching groove and the limiting column to drive the bracket, thereby ensuring the synchronous movement of the bracket group and increasing the docking accuracy. In addition, on this basis, the matching groove is set as a combination of an oblique groove and an arc groove, and the driving shaft 2 and the side wall of the driving ring are provided with teeth that can mesh with each other, so that the grinding drive can be achieved through the rotation of the driving ring while also ensuring the position of the pressure contact wheel and ensuring the limiting reliability, thereby realizing power integration, simplifying the power source layout, reducing manufacturing costs and facilitating volume optimization.

[0020] 4. The present invention realizes flexible grinding pressure by configuring the grinding wheel as a combination of a grinding block and a wheel body and utilizing centrifugal force to control the "feed" of the grinding block. The grinding pressure can be controlled according to the rotation speed, and while ensuring that the grinding wheel can grind the seams and welds, it can also prevent the welds from being damaged, thereby increasing the reliability of the device.

[0021] 5. The present invention utilizes the lifting of the driving shaft as the driving force, and utilizes the spiral groove and the limiting protrusion as the driving input of the driving ring, so that the lifting of the support plate and the rotational driving of the driving ring can be integrated, which further simplifies the layout of the power source, reduces the manufacturing cost and facilitates volume optimization.

[0022] 6. The present invention, by setting a cylinder body, sets the drive shaft and the piston as a hollow structure, and adds an air pressure sensor, so that the relative motion characteristics between the various components under the comprehensive drive can be used to realize pressurization in the pressure vessel during the grinding process, prevent grinding impurities from entering the joint gap of the pressure vessel, and increase the subsequent grinding quality. It can also automatically apply negative pressure to the inner cavity of the pressure vessel during the resetting process after welding, so as to detect the air tightness of the pressure vessel, simplify the subsequent air tightness detection steps, and increase the production efficiency of the pressure vessel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a pressure vessel welding device that is convenient for docking proposed by the present invention; Figure 2 A schematic diagram of the structure of the butt joint portion of a pressure vessel welding device that is convenient for butt jointing proposed by the present invention; Figure 3 A schematic cross-sectional view of a limit assembly of a pressure vessel welding device that is convenient for docking proposed by the present invention; Figure 4 A schematic diagram of the structure of a limit assembly of a pressure vessel welding device that is convenient for docking proposed by the present invention; Figure 5 A schematic diagram of the structure of a driving ring of a pressure vessel welding device that is convenient for docking proposed by the present invention; Figure 6 A schematic diagram of the cross-sectional structure of a grinding wheel of a pressure vessel welding device that is convenient for docking proposed by the present invention; Figure 7 A partial cross-sectional structural schematic diagram of a pressure vessel welding device that is convenient for docking proposed by the present invention; Figure 8 A schematic diagram of the structure of the lifting part of a pressure vessel welding device that is convenient for docking proposed by the present invention; Fig. 9 This is a schematic structural diagram of a transverse feeding portion of a pressure vessel welding device that is convenient for docking and is proposed by the present invention.

[0024] In the figure: 1-base, 2-transverse feeding part, 3-pressure vessel, 4-welding gun, 5-gantry, 6-lifting part, 7-support plate, 8-docking part, 9-limiting assembly, 10-driving ring, 11-driving shaft 1, 12-bracket, 13-shaft 1, 14-synchronous transmission assembly, 15-shaft 2, 16-driving shaft 2, 17-pressure contact wheel, 18-grinding wheel, 19-tooth piece A, 20-tooth piece B, 21-matching groove, 22-limiting column, 23-oblique groove, 24-arc groove, 25-wheel body, 26-spring one, 27-sliding rod, 28-grinding block, 29-air pressure sensor, 30-spiral groove, 31-limiting protrusion, 32-cylinder body, 33-spring two, 34-piston, 35-lifting plate, 36-guide rod, 37-retractor, 38-limiting cylinder, 39-motor, 40-screw. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] Embodiment 1: A pressure vessel welding device that is easy to connect, such as Figure 1-9 As shown, it includes a base 1, the top of which is provided with a transverse feeding part 2 for loading and unloading the pressure vessel 3, the top of the base 1 is fixed with a gantry 5 by bolts, the bottom of the gantry 5 is matched with a support plate 7 through a lifting part 6, the bottom of the support plate 7 is provided with a docking part 8, and the inner side wall of one side of the gantry 5 is fixed with a welding gun 4 for welding the pressure vessel 3 by bolts.

[0028] The docking portion 8 includes 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 limiting components 9 slidingly matched with the side wall of the support plate 7.

[0029] The limiting assembly 9 includes 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 through an axis 2 15 .

[0030] The wheel assembly includes two pressure contact wheels 17 fixed to the outer wall of the second shaft 15 and respectively contacting and cooperating with the tank side wall of the pressure vessel 3 and the head side wall 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.

[0031] 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 welded on the top thereof.

[0032] When the device is in use, the pressure vessel 3 can be placed in the transverse feeding part 2, and the relative positions of the tank body and the head of the pressure vessel 3 are roughly correct. The transverse feeding part 2 transports the pressure vessel 3 to the docking part 8, and 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, and the multiple brackets 12 are synchronously retracted inwardly through the cooperation of the matching groove 21 and the limiting column 22 until the pressure contact wheel 17 contacts the side wall of the tank body and the side wall of the head of the pressure vessel 3, and then the shaft 2 15 drives the pressure contact wheel 17 to rotate, thereby driving the pressure vessel 3 to rotate as a whole through friction. While rotating, the three groups of pressure contact wheels 17 can ensure their coaxiality by limiting the side walls of the tank body and the head of the pressure vessel 3, and while rotating, the grinding wheel 18 will also rotate, so that the joints can be polished.

[0033] The device is provided with a plurality of groups of circular array pressure contact wheels 17, and each group of pressure contact wheels 17 adopts two arrangements, which respectively contact the side walls of the tank body and the head of the pressure vessel 3, thereby ensuring the coaxiality of the tank body and the head of the pressure vessel 3 by means of side limiting, and the pressure contact wheels 17 can also make the pressure vessel 3 rotate, so that multi-angle limiting can be performed during the rolling process, thereby further ensuring the coaxiality and ensuring the subsequent welding quality.

[0034] In order to solve the grinding problem; Figure 3 , 4 As shown, a tooth piece A19 is welded to the end face of the grinding wheel 18, and 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 2 16 respectively. The shaft 13 is matched with the tooth piece A19 through the tooth piece B20, and the shaft 13, the shaft 2 15 and the driving shaft 2 16 are driven and matched in the same direction through the 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 described in detail in this embodiment.

[0035] When the pressure contact wheel 17 contacts the pressure container 3, the driving shaft 2 16 rotates, thereby driving the shaft 2 15 and the shaft 1 13 to rotate through the synchronous transmission assembly 14. The rotation of the shaft 2 15 drives the pressure contact wheel 17 to rotate, thereby causing the pressure container 3 to rotate. The rotation of the shaft 13 drives the grinding wheel 18 to rotate through the gear piece B20 and the gear piece A19, thereby grinding.

[0036] The device is provided with a grinding wheel 18, which can grind burrs, flashes, curling edges, etc. of the joints during the positioning and docking process, thereby improving the subsequent welding quality, and in the process of resetting the components after welding, the grinding wheel 18 can also grind the weld to remove burrs and increase the aesthetics. In addition, the grinding wheel 18 is driven by the tooth piece A19, the tooth piece B20, and the shaft 13, and its rotation direction is opposite to that of the pressure contact wheel 17, so that its relative movement speed with the side wall of the pressure vessel 3 can be faster, thereby increasing the grinding efficiency.

[0037] In order to solve the comprehensive driving problem; such as Figure 5 As shown, the matching groove 21 is composed of an oblique groove 23 and an arc groove 24, and the outer wall of the driving shaft 16 and the outer wall of the driving ring 10 are provided with teeth that can mesh with each other.

[0038] In the initial state, the limiting column 22 is located at the outermost side of the inclined groove 23. As the driving ring 10 rotates, it is limited by the inclined groove 23, so that the bracket 12 moves inward until it moves to the junction of the inclined groove 23 and the arc groove 24. At this time, the pressure contact wheel 17 is tightly matched with the side wall of the pressure vessel 3, and the teeth of the driving shaft 2 16 and the outer wall of the driving ring 10 are meshed with each other. As the driving ring 10 continues to rotate, it can drive the driving shaft 2 16 to rotate while keeping the position of the pressure contact wheel 17 and the side wall of the pressure vessel 3.

[0039] The device, based on the driving ring 10, utilizes the matching groove 21 and the limiting column 22 to drive the bracket 12, thereby ensuring the synchronous movement of the bracket 12 and increasing the docking accuracy. In addition, on this basis, the matching groove 21 is set as a combination of an oblique groove 23 and an arc groove 24, and the driving shaft 16 and the side wall of the driving ring 10 are provided with teeth that can mesh with each other, so that the grinding drive can be achieved through the rotation of the driving ring 10 while also ensuring that the position of the pressure contact wheel 17 is maintained, ensuring the limiting reliability, thereby realizing power integration, simplifying the power source layout, reducing manufacturing costs and facilitating volume optimization.

[0040] In order to solve the problem of weld damage; Figure 6 As 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 via a slide rod 27, and the slide rod 27 is connected to the wheel body 25 via a spring 26.

[0041] When the wheel body 25 is not rotating, the slide rod 27 is pulled by the spring 26, so that the grinding block 28 is attached to the side wall of the wheel body 25. The grinding block 28 does not contact the side wall or weld of the pressure vessel 3 at this time. When the wheel body 25 rotates, the slide rod 27 and the grinding block 28 are moved outward by the centrifugal force for grinding.

[0042] Because when the butt joint is completed but not welded, the grinding wheel 18 needs to contact and grind with the side wall of the pressure vessel 3, and after welding is completed, 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, thus causing the welding to fail.

[0043] The present device realizes flexible grinding pressure by configuring the grinding wheel 18 as a combination of a grinding block 28 and a wheel body 25 and utilizing centrifugal force to control the "feed" of the grinding block 28. The grinding pressure can be controlled according to the rotation speed, thereby ensuring that the grinding wheel 18 can grind the seams and welds while preventing the welds from being damaged, thereby increasing the reliability of the device.

[0044] To solve the driver problem; Figure 7 As shown, a spiral groove 30 is provided 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 welded on the inner wall thereof, and a piston 34 is welded 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 2 33.

[0045] Before the support plate 7 descends, the drive shaft 11 supports the support plate 7, the drive ring 10 and the weight of the connecting parts through the elastic force of the spring 2 33, thereby driving the overall lifting and lowering thereof until the support plate 7 contacts the flange opening above the pressure vessel 3, and the support plate 7 is limited. At this time, the drive shaft 11 continues to descend, and the drive ring 10 will be driven to rotate through the cooperation of the spiral groove 30 and the limiting protrusion 31, and the spring 2 33 will be gradually stretched, so that the support plate 7 and the flange opening of the pressure vessel 3 are tightly matched.

[0046] The present device utilizes the lifting and lowering of the driving shaft 11 as the driving force, and utilizes the spiral groove 30 and the limiting protrusion 31 as the driving input of the driving ring 10, so that the lifting and lowering of the support plate 7 and the rotational drive of the driving ring 10 can be integrated, thereby further simplifying the arrangement of the power source, reducing the manufacturing cost and facilitating the volume optimization.

[0047] In order to solve the sealing detection problem, such as Figure 7 As shown, a cylinder body 32 is welded to the outer wall of the support plate 7, and a piston 34 is slidably fitted to the inner wall of the cylinder body 32. The piston 34 and the drive shaft 11 are both cavity structures, and an air pressure sensor 29 connected to the inner cavity of the drive shaft 11 is installed on the top side wall of the drive shaft 11.

[0048] When 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 is necessary to continue to rotate so that the pressure contact wheel 17 and the grinding wheel 18 rotate. During this process, the piston 34 will move downward relative to the cylinder body 32, thereby increasing the pressure in the inner cavity of the pressure vessel 3. At the same time, the spring 33 is stretched, and the support plate 7 contacts and seals the flange of the pressure vessel 3. A sealing gasket can be added to the flange in advance. Since welding is not performed 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 inner cavity of the pressure vessel 3 will be discharged outward from the gap, so that the dust and impurities polished by the grinding wheel 18 can be blown out; at the same time, during the resetting process after welding, the driving ring 10 is reversed and the piston 34 moves upward, which will cause negative pressure in the inner cavity of the pressure vessel 3, so that the negative pressure can be monitored by the air pressure sensor 29. After a period of time, the sealing of the pressure vessel 3 is detected according to whether the negative pressure changes, thereby detecting the welding quality.

[0049] The device, by setting a cylinder body 32, sets the drive shaft 11 and the piston 34 as a hollow structure, and adds an air pressure sensor 29, so that the relative motion characteristics between the various components under the comprehensive drive can be used to pressurize the pressure vessel 3 during the grinding process, prevent grinding impurities from entering the joint gap of the pressure vessel 3, and improve the subsequent grinding quality. It can also automatically apply negative pressure to the inner cavity of the pressure vessel 3 during the resetting process after welding, so as to detect the air tightness of the pressure vessel 3, simplify the subsequent air tightness detection steps, and increase the production efficiency of the pressure vessel.

[0050] In order to solve the lifting problem, such as Figure 8 As shown, the lifting part 6 includes a lifting plate 35 and a telescope 37, the lifting plate 35 is rotatably connected to the top of the driving shaft 11, the telescope 37 is fixed to the top of the gantry 5 by bolts, and the telescopic end of the telescope 37 is fixed to the top outer wall of the lifting plate 35 by bolts, and the top of the support plate 7 is fixed with a guide rod 36 by bolts, and the guide rod 36 is slidably connected to the lifting plate 35 and the inner wall of the gantry 5.

[0051] When the telescoping device 37 is extended or retracted, the lifting plate 35 can be driven to move up or down, and the guide rod 36 can guide the lifting plate 35 and the supporting plate 7 to move up or down.

[0052] The specific steps for using this device are as follows: S1: First, place the tank body of the pressure container 3 on the transverse feeding part 2, and place the seal of the pressure container 3 on the tank body to ensure that they are roughly aligned; S2: Then the feeder 2 is moved transversely to transport the pressure vessel 3 to the bottom of the support plate 7; S3: the telescopic device 37 extends, and drives the support plate 7 to descend through the lifting plate 35, until the support plate 7 contacts the flange on the upper side of the pressure vessel 3, and the support plate 7 is limited. At this time, the 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; S4: When the driving ring 10 rotates, the inclined groove 23 cooperates with the limiting column 22 to drive the multiple brackets 12 to shrink inward synchronously until the pressure contact wheel 17 is in close contact with the side wall of the pressure container 3, and at the same time, the driving shaft 16 is meshed with the teeth of the driving ring 10, and at this time, the limiting column 22 is located at the junction of the inclined groove 23 and the arc groove 24; S4: Then the driving shaft 11 continues to descend, the driving ring 10 continues to rotate, the limiting column 22 cooperates with the arc groove 24 to ensure the position of the bracket 12, and the driving shaft 2 16 also rotates, thereby driving the shaft 13 and the shaft 2 15 to rotate through the synchronous transmission component 14. The rotation of the shaft 2 15 can drive the pressure contact wheel 17 to rotate, thereby driving the pressure vessel 3 to rotate to achieve rotational positioning. At the same time, the rotation of the shaft 13 will drive the grinding wheel 18 to rotate through the tooth piece B20 and the tooth piece A19 to achieve joint grinding, until the limiting column 22 moves to half of the total stroke of the arc groove 24, the pressure vessel 3 rotates at least 1.5 turns, and at this time the spring 2 33 is in a stretched state, and the support plate 7 is tightly combined with the flange mouth; S4: At this time, the welding gun 4 starts welding, the driving shaft 11 continues to descend, the driving ring 10 continues to rotate, and the pressure vessel 3 continues to rotate until the formation limit of the arc groove 24 is reached, and a processing step is completed; S5: Then the driving shaft 11 starts to move upward until the limit column 22 stops when it moves half of the total stroke of the arc groove 24. At this time, due to the relative movement of the piston 34 and the cylinder body 32, negative pressure appears in the pressure container 3, and the negative pressure is maintained. The air tightness detection of the pressure container 3 is realized by monitoring the pressure through the air pressure sensor 29; S6: Then the drive shaft 11 continues to move upward, and the drive ring 10 and the pressure vessel 3 continue to rotate. This process is the weld grinding. After the limit column 22 moves to the junction of the arc groove 24 and the inclined groove 23, the drive shaft 11 continues to move upward, and each component is reset in the reverse direction.

[0053] Embodiment 2: A pressure vessel welding device that is easy to connect, such as Fig. 9As shown, in order to solve the loading and unloading problems; this embodiment makes the following improvements on the basis of embodiment 1: the transverse feeding part 2 includes a limiting cylinder 38, a motor 39 and a screw 40, the limiting cylinder 38 includes an outer shell and an inner shell that are rotatably connected to each other, the size of the inner shell matches the outer diameter of the pressure vessel 3, the outer shell is slidably connected to the top of the base 1, the motor 39 is fixed to the top outer wall of the base 1 by bolts, the screw 40 is connected to the output shaft of the motor 39 by a coupling, and the outer wall of the screw 40 is connected to the bottom of the outer shell by threads.

[0054] When the present embodiment is in use, the pressure container 3 can be placed in the inner shell of the limiting cylinder 38, and the motor 39 can be started to drive the screw rod 40 to rotate, thereby driving the pressure container 3 to move horizontally.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which 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).

2. A pressure vessel fixing and installation device that is easy to dock according to claim 1, characterized in that: 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 second shaft (15) are rotatably connected to the first shaft (13) and the second drive shaft (16); the first shaft (13) is driven and matched with the tooth piece A (19) through the tooth piece B (20); and the first shaft (13), the second shaft (15) and the second drive shaft (16) are driven and matched in the same direction through a synchronous transmission assembly (14).

3. A pressure vessel fixing and installation device that is easy to dock according to claim 2, characterized in that: 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.

4. 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).

5. The 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).

6. A pressure vessel fixing and installation device that is easy to dock according to claim 5, characterized in that: A cylinder body (32) is fixedly mounted on the 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 a 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).

7. 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).

8. A pressure vessel fixing and installation device that is easy to dock according to claim 7, 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).

9. 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).

10. A pressure vessel fixing and installation device that is easy to dock according to claim 9, 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.

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