Continuous welding equipment for pipeline hydraulic damper assembly and welding method of continuous welding equipment

Abstract

The invention relates to the technical field of hydraulic dampers, in particular to continuous welding equipment for a pipeline hydraulic damper assembly and a welding method thereof.The continuous welding equipment comprises a seam welding machine body, a pair of roller electrodes are arranged on one side of the seam welding machine body, a welding wheel base is arranged on one sides of the roller electrodes, and a second gear is arranged at the lower end of the welding wheel base; a pair of hinge rods are arranged between the first gear and the second gears, a rotating shaft penetrates through the inner side of the first gear and is fixedly connected with the first gear, a lifting frame is arranged on the lower side of the rotating shaft, an external thread is arranged at one end of the rotating shaft, and the other end of the rotating shaft is provided with an internal thread. The rotating shaft penetrates through and is in threaded connection with a gear column, a pair of friction discs are arranged on the two sides of the gear column, the rotating shaft penetrates through the pair of friction discs and is fixedly connected with the friction discs, and one side of the gear column is in meshed connection with a vertical rack.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic dampers, and in particular to a continuous welding device for a pipeline hydraulic damper assembly and a welding method thereof. Background Art

[0002] Due to its unique vibration damping performance, hydraulic dampers are often used in power plants (including nuclear power plants), petrochemical and other fields as safety protection devices for equipment and pipelines. Under normal operating conditions of the equipment and pipelines, the damper can adapt to the slow movement of the pipeline or equipment caused by thermal expansion and contraction, and has almost no damping on the supported parts; when sudden pressure changes such as earthquakes, water hammers, steam hammers, and safety valve exhausts occur, the damper becomes a rigid part to limit displacement and avoid strong impacts and vibrations on the equipment and pipelines.

[0003] In the production process of dampers, it is often necessary to weld the processed cylinder barrel and the lifting ring end cover. In the existing patent publication number CN116748784B, a flange-type hydraulic cylinder body welding device is disclosed, which includes a welding machine tool body. The welding machine tool body includes a bed, a main spindle box assembly, a tailstock assembly, and a welding head assembly; the clamping end of the main spindle box assembly is connected to a cylinder bottom limiting tooling. The cylinder bottom limiting tooling includes a positioning seat, a clamping connection end, and a mandrel positioning groove; the cylinder bottom limiting tooling is positioned by a cylinder bottom positioning mechanism, and a mandrel positioning mechanism and a cylinder bottom stop positioning mechanism are respectively arranged at the cylinder bottom limiting tooling. A cylinder barrel support assembly is slidably connected to the bed, and the cylinder barrel support assembly reciprocates along the X-axis direction of the bed. It includes a support seat and a roller assembly, both of which can reciprocate along the Z-axis direction; a cylinder barrel positioning pin positioning mechanism is arranged at the tailstock assembly, and a cylinder barrel positioning mechanism is arranged on the tailstock assembly.

[0004] In the above technical solution, through various positioning, limiting, and sensing components, automatic positioning and automated welding can be achieved, and a complete working process of positioning, clamping, preheating, welding, and cleaning can also be realized. However, the technological process of adopting this welding method is relatively cumbersome, thus reducing work efficiency, and the overall structure of the equipment is relatively complex, resulting in higher costs.

[0005] Therefore, it is necessary to provide a continuous welding device for a pipeline hydraulic damper assembly and a welding method thereof, which can achieve the effect of automatic welding. Summary of the Invention

[0006] The purpose of the present invention is to provide a continuous welding device for a pipeline hydraulic damper assembly and a welding method thereof to solve the problems raised in the above background art.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: A continuous welding device for a pipeline hydraulic damper assembly and its welding method, comprising a seam welding machine body. On one side of the seam welding machine body, a pair of roller electrodes are provided. On one side of the roller electrodes, a welding wheel base is provided. At the lower end of the welding wheel base, a second gear is provided. The second gear drives the roller electrodes to rotate. At the lower ends of a pair of second gears, a first gear is meshed and connected. Between the first gear and the second gear, a pair of hinge rods are provided. Inside the first gear, a rotating shaft is penetrated and fixedly connected. Below the rotating shaft, a lifting frame is provided. At one end of the rotating shaft, an external thread is provided. The rotating shaft penetrates and is threadedly connected to a gear column. On both sides of the gear column, a pair of friction discs are provided. The rotating shaft penetrates through the pair of friction discs and is fixedly connected to them. On one side of the gear column, a vertical rack is meshed and connected.

[0008] In one embodiment, at the lower end of the roller electrode, a rolling wheel is provided. The rolling wheel is in contact with the roller electrode. At one end of the rolling wheel, a transmission rod is fixedly connected. The transmission rod penetrates through the welding wheel base and is rotatably connected to it. The transmission rod penetrates through the second gear and is fixedly connected to it. The transmission rod penetrates through the hinge rod and is rotatably connected to it; At one end of the seam welding machine body, a number of horizontal openings are provided for the displacement of the transmission rod and the roller electrode.

[0009] In one embodiment, at one end of the welding wheel base, a number of first guide rods are fixedly connected. The first guide rods penetrate through the seam welding machine body and are slidably matched with it.

[0010] In one embodiment, at the lower end of the lifting frame, a number of second guide rods are fixedly connected. The second guide rods penetrate through the bottom of the seam welding machine body and are slidably matched with it.

[0011] In one embodiment, the lifting frame includes a first baffle, a second baffle, and a third baffle. The rotating shaft penetrates through the first baffle, the second baffle, and the third baffle and is rotatably connected to them. A pair of friction discs are arranged between the second baffle and the first baffle. There is a gap between the friction disc and the second baffle or the first baffle. The vertical rack is located between the pair of friction discs. The vertical rack penetrates through the lifting frame and is slidably matched with it. The lower end of the vertical rack is fixedly connected to the bottom of the seam welding machine body; On the outside of the first baffle, a motor is fixedly connected. The motor is used to drive the rotating shaft. A square opening is provided at the rear side of the seam welding machine body. The first baffle is slidably matched with the square opening.

[0012] In one embodiment, a blanking opening is provided at the upper end of the seam welding machine body. At the upper end of the seam welding machine body, a first blanking vertical frame and a second blanking vertical frame are fixedly connected. The cylinder barrels are stacked and placed in the first blanking vertical frame. The lifting ring end covers are stacked and placed in the second blanking vertical frame. A vertical groove is provided in the middle of the second blanking vertical frame. The bolts at one end of the lifting ring end cover extend outside the vertical groove; The lower ends of the first blanking vertical frame and the second blanking vertical frame are both provided with limiting clamps.

[0013] In one embodiment, the limit clamp includes a V-shaped clamp block 1 and a V-shaped clamp block 2, and the inner sides of the V-shaped clamp block 1 and the V-shaped clamp block 2 are penetrated and fixedly connected with a rotating rod, and the two ends of the blanking vertical frame 1 are fixedly connected with a support block, and the rotating rod penetrates the support block and is rotatably connected to it, and a torsion spring is arranged between the rotating rod and the support block.

[0014] In one embodiment, a loading part is provided on one side of the seam welding machine body, and the loading part includes a press ring, the inner diameter of the press ring is adapted to the diameter of the lifting ring end cover bolt, and a displacement drive mechanism is provided at one end of the press ring.

[0015] In one embodiment, a pair of supporting rollers are rotatably connected to the interior of the seam welding machine body; A discharge port is provided on the rear side of the seam welding machine body, and a blocking piece is slidably fitted on the inner side of the discharge port.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: in the present invention, the rotation of the rotating shaft drives the synchronous rotation of the gear column, so that the gear column moves downward along the vertical rack, thereby driving the lifting frame to descend as a whole, and the hinge rod is used to pull a pair of gears 2 and a pair of welding wheel bases to move horizontally relative to the center, so that a pair of roller electrodes are clamped at the weld between the cylinder barrel and the end cover of the lifting ring, and the welding work can be started. The continuous rotation of the rotating shaft is directly driven by the transmission between the gears to drive the synchronous rotation of the pair of roller electrodes. The roller electrodes clamp the cylinder barrel and the end cover of the lifting ring and rotate, and continuous pulse power is transmitted to complete the continuous welding of a circle of welds. A pair of roller electrodes is used to automatically clamp the damper components and then automatically connect them for welding, avoiding the cumbersome steps of traditional welding technology. The operation is simple and convenient, and no impurities such as welding slag and flux that require further treatment are generated, thus saving steps and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0018] In the attached figure: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an overall cross-sectional schematic diagram of the present invention; Figure 3 It is a three-dimensional schematic diagram of the seam welding machine body of the present invention; Figure 4 It is a three-dimensional schematic diagram of the lifting frame of the present invention; Figure 5 is a schematic diagram of gear meshing according to the present invention; Figure 6 is a schematic cross-sectional view of the seam welding machine body according to the present invention; Figure 7 is Figure 2 a partially enlarged schematic diagram of area A of Figure 8 is a three-dimensional schematic diagram of the back according to the present invention; Figure 9 is a schematic diagram of the movement direction of the gear column according to the present invention; Figure 10 is a schematic diagram of the position state of the gear column and the vertical rack according to the present invention; In the figure: 1. Seam welding machine body; 101. Roller electrode; 102. Welding wheel base; 103. Gear II; 104. Gear I; 105. Hinge rod; 106. Rotating shaft; 107. Gear column; 108. Friction disc; 109. Vertical rack; 110. Rolling wheel; 111. Transmission rod; 112. Guide rod I; 2. Lifting frame; 201. Baffle I; 202. Baffle II; 203. Baffle III; 204. Guide rod II; 3. Support roller rod; 301. Feeding vertical frame I; 302. Feeding vertical frame II; 303. V-shaped clamping block I; 304. V-shaped clamping block II; 305. Rotating rod; 306. Support block; 4. Loading part; 401. Pressing ring; 5. Discharge port; 501. Flap; 6. Cylinder barrel; 7. Hoisting ring end cover; 8. Motor; 801. Cylinder I; 802. Cylinder II. Detailed implementation manners

[0019] The following disclosure provides many different implementation manners or examples for implementing different structures of the present application. To simplify the disclosure of the present application, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various implementation manners and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0020] Please refer to Figure 1-10, the present invention provides a technical solution: a continuous welding device for a pipeline hydraulic damper assembly and its welding method, which includes a seam welding machine body 1. On one side of the seam welding machine body 1, there is a pair of roller electrodes 101. On one side of the roller electrodes 101, there is a welding wheel base 102. At the lower end of the welding wheel base 102, there is a second gear 103. The second gear 103 drives the roller electrodes 101 to rotate. At the lower ends of the pair of second gears 103, there is a first gear 104 engaged. Between the first gear 104 and the second gear 103, there is a pair of hinge rods 105. Inside the first gear 104, there is a rotating shaft 106 passing through and fixedly connected. Below the rotating shaft 106, there is a lifting frame 2. At one end of the rotating shaft 106, there is an external thread. The rotating shaft 106 passes through and is threadedly connected to a gear column 107. On both sides of the gear column 107, there is a pair of friction discs 108. The rotating shaft 106 passes through the pair of friction discs 108 and is fixedly connected to them. On one side of the gear column 107, there is a vertical rack 109 engaged.

[0021] First, place the assembled cylinder barrel 6 and the lifting ring end cover 7 to be welded between a pair of roller electrodes 101. The weld formed by the two is aligned with the roller electrodes 101. In the initial state, through the threaded connection between the rotating shaft 106 and the gear column 107, the gear column 107 and one side of the friction disc 108 are pressed against each other (as shown in the rotation direction in Figure 9 . When the rotating shaft 106 rotates forward, under the guiding action of the vertical rack 109, the gear column 107 is restricted to only axial displacement, and the displacement direction is as shown in the figure until the gear column 107 abuts against one side of the friction disc 108), and the gear column 107 and the friction disc 108 are fastened to each other through friction (as shown in Figure 4 ); at this time, the rotating shaft 106 can drive the gear column 107 to rotate in the reverse direction, so that the gear column 107 moves downward along the vertical rack 109, thereby driving the entire lifting frame 2 to descend. The first gear 104 moves downward. Through the set hinge rods 105, a pair of second gears 103 and a pair of welding wheel bases 102 are pulled to horizontally displace towards the middle, so that a pair of roller electrodes 101 clamp the weld between the cylinder barrel 6 and the lifting ring end cover 7, and the welding work can start. At this time, directly through the continuous reverse rotation of the rotating shaft 106, through the transmission between the gears, a pair of roller electrodes 101 are driven to rotate synchronously. The roller electrodes 101 clamp the cylinder barrel 6 and the lifting ring end cover 7 and rotate, and continuous pulsed power supply is carried out, and the continuous welding of a circle of welds can be completed; at the same time, since the gear column 107 descends along the vertical rack 109, the clamping work of the workpiece is realized. The lower end of the lifting frame 2 also contacts the bottom of the seam welding machine body 1. At this time, because the vertical rack 109 is engaged with the gear column 107, the gear column 107 is restricted from reversing. And through the continuous reverse rotation of the rotating shaft 106, when the reverse driving force is greater than the friction force between the friction disc 108 and the gear column 107, the gear column 107 can be driven through the threaded connection to displace along the tooth gap of the vertical rack 109 towards the other friction disc 108 (that is, the same as Figure 9Axial displacement in the opposite direction), that is, when the rotating shaft 106 rotates in the reverse direction, during the process of driving the roller electrode 101 to rotate and weld, the gear column 107 undergoes axial displacement towards the friction disc 108 on the other side. When the welding work is completed, at this time, the gear column 107 also displaces to abut tightly against the friction disc 108 on the other side (as Figure 10 shown). At this time, when the rotating shaft 106 rotates forward again, it can drive the gear column 107 to rise along the vertical rack 109, so that the lifting frame 2 and the roller electrode 101 are both reset, releasing the welded cylinder 6. Then it can be removed and the next workpiece to be welded can be placed, realizing continuous processing. Then the rotating shaft 106 continues to rotate forward, and then from Figure 10 returns to Figure 9 the state, thus completing a process closed-loop; This application uses a pair of roller electrodes 101 to realize automatic clamping and then automatic connection for welding of the damper assembly, avoiding the cumbersome procedures of traditional welding processes, with simple and convenient operation, and no impurities such as welding slag and welding flux that require subsequent further treatment, saving processes and improving work efficiency.

[0022] A rolling wheel 110 is provided at the lower end of the roller electrode 101. The rolling wheel 110 is in contact with the roller electrode 101. One end of the rolling wheel 110 is fixedly connected to a transmission rod 111. The transmission rod 111 passes through the welding wheel base 102 and is rotatably connected thereto. The transmission rod 111 passes through the second gear 103 and is fixedly connected thereto. The transmission rod 111 passes through the hinge rod 105 and is rotatably connected thereto; A plurality of horizontal openings are provided at one end of the seam welding machine body 1 for the displacement of the transmission rod 111 and the roller electrode 101.

[0023] Preferably, when the roller electrode 101 needs to rotate for welding, the first gear 104 drives the second gear 103 to rotate. The second gear 103 drives the rolling wheel 110 to rotate through the transmission rod 111. By transmitting power through friction, the roller electrode 101 can be driven to rotate.

[0024] One end of the welding wheel base 102 is fixedly connected with a plurality of first guide rods 112. The first guide rods 112 pass through the seam welding machine body 1 and are slidably matched therewith.

[0025] A plurality of second guide rods 204 are fixedly connected to the lower end of the lifting frame 2. The second guide rods 204 pass through the bottom of the seam welding machine body 1 and are slidably matched therewith.

[0026] Preferably, a plurality of first guide rods 112 are provided to guide the displacement of the welding wheel base 102, thereby ensuring the stability of the middle displacement of the roller electrode 101; Preferably, the second guide rods 204 are provided to guide the lifting of the lifting frame 2 and improve the stability of the lifting.

[0027] The lifting frame 2 includes a first baffle 201, a second baffle 202 and a third baffle 203. The rotating shaft 106 passes through the first baffle 201, the second baffle 202 and the third baffle 203 and is rotatably connected thereto. A pair of friction discs 108 are arranged between the second baffle 202 and the first baffle 201. There is a gap between the friction disc 108 and the second baffle 202 or the first baffle 201. The vertical rack 109 is between the pair of friction discs 108. The vertical rack 109 passes through the lifting frame 2 and is slidably matched therewith. The lower end of the vertical rack 109 is fixedly connected to the bottom of the seam welding machine body 1; A motor 8 is fixedly connected to the outside of the first baffle 201. The motor 8 is used to drive the rotating shaft 106. A square opening is provided at the rear side of the seam welding machine body 1. The first baffle 201 is slidably matched with the square opening.

[0028] Preferably, the rotating shaft 106 is driven by the motor 8, and the rear side of the seam welding machine body 1 is open, facilitating the lifting displacement of the motor 8 following the lifting frame 2; Preferably, the vertical rack 109 is between the pair of friction discs 108, so that the displaceable gear column 107 can always maintain meshing with the vertical rack 109.

[0029] A blanking port is provided at the upper end of the seam welding machine body 1. A first blanking vertical frame 301 and a second blanking vertical frame 302 are fixedly connected to the upper end of the seam welding machine body 1. The cylinder barrels 6 are stacked in the first blanking vertical frame 301, and the lifting ring end covers 7 are stacked in the second blanking vertical frame 302. A vertical groove is provided in the middle side of the second blanking vertical frame 302. The bolts at one end of the lifting ring end covers 7 extend out of the vertical groove; Limit clamping members are provided at the lower ends of both the first blanking vertical frame 301 and the second blanking vertical frame 302.

[0030] Preferably, in order to improve the automation degree of the welding process, a first blanking vertical frame 301 and a second blanking vertical frame 302 are provided on the upper side of the seam welding machine body 1 for automatically blanking the cylinder barrels 6 and the lifting ring end covers 7. Specifically, the cylinder barrels 6 are vertically stacked in the first blanking vertical frame 301, and limit clamping members are provided at the lower end for limiting. They can enter the inside of the seam welding machine body 1 through the blanking port for welding work. The lifting ring end covers 7 are arranged in the same way. Since bolts are connected to the tops of the lifting ring end covers 7, facilitating subsequent connection of the lifting ring parts, a vertical groove is provided in the middle side of the second blanking vertical frame 302, and the bolts at one end of the lifting ring end covers 7 extend out of the vertical groove, avoiding manual feeding one by one and improving work efficiency.

[0031] The limit clamping member includes a first V-shaped clamping block 303 and a second V-shaped clamping block 304. The inside of the first V-shaped clamping block 303 and the second V-shaped clamping block 304 is penetrated and fixedly connected with a rotating rod 305. Support blocks 306 are fixedly connected to both ends of the first blanking vertical frame 301. The rotating rod 305 passes through the support blocks 306 and is rotatably connected thereto. A torsion spring member is arranged between the rotating rod 305 and the support blocks 306.

[0032] Preferably, a torsion spring member is provided such that in the initial state, the first V-shaped block 303 and the second V-shaped block 304 are in contact with the workpiece at the lower arc angle (as Figure 6 shown), supporting and limiting the workpiece in the vertical blanking frame. When it is necessary to screen and blank a single workpiece, by simultaneously rotating a pair of rotating rods 305 in the reverse direction, the first V-shaped block 303 and the second V-shaped block 304 are driven to flip, so that the lower arc angles are far away from each other, causing the workpiece to fall. At the same time, the upper arc angles will support and limit the workpiece above, so as to realize the screening and feeding of a single workpiece. Then, under the reset action of the torsion spring member, the first V-shaped block 303 and the second V-shaped block 304 are reset, the upper arc angle releases the workpiece, and then the lower arc angle supports it, facilitating the next screening and feeding.

[0033] On one side of the seam welding machine body 1, a feeding part 4 is provided. The feeding part 4 includes a pressing ring 401. The inner diameter of the pressing ring 401 is adapted to the bolt diameter of the lifting ring end cover 7. One end of the pressing ring 401 is provided with a displacement driving mechanism.

[0034] A pair of support roller rods 3 are rotatably connected inside the seam welding machine body 1; On the rear side of the seam welding machine body 1, a discharge port 5 is provided. A baffle 501 is slidably fitted inside the discharge port 5.

[0035] Preferably, the inner diameter of the pressing ring 401 is adapted to the bolt diameter of the lifting ring end cover 7. Driven by the displacement driving mechanism, the pressing ring 401 is displaced to sleeve outside the bolt, and then the current lifting ring end cover 7 is driven to descend along the second vertical blanking frame 302, thereby actively pushing the second V-shaped block 304, driving the rotating rod 305 to rotate, and driving the first V-shaped block 303 to rotate synchronously, so that the cylinder 6 is screened and blanked onto the support roller rods 3 inside the seam welding machine body 1, completing the synchronous feeding of the cylinder 6 and the lifting ring end cover 7; Then the pressing ring 401 drives the lifting ring end cover 7 to be displaced to coincide with the axis of the cylinder 6 and press it into the cylinder 6. A baffle 501 is provided at the other end of the cylinder 6 to prevent the axial displacement of the cylinder 6 and ensure the stability of the pressing. Then the weld between the two can be welded. After the welding is completed, the staff slides the baffle 501 upward to remove the welded damper cylinder body, thus realizing the work of automatic feeding, pressing and welding, greatly improving the work efficiency, and not requiring additional driving parts and control programs to control the blanking of a pair of rotating rods 305, saving costs and installation space; Preferably, the displacement driving mechanism includes a first cylinder 801 and a second cylinder 802. The second cylinder 802 is used to push the first cylinder 801 to lift and lower, and then the first cylinder 801 drives the pressing ring 401 to horizontally displace, so as to realize the functions of picking up and pressing the lifting ring end cover 7.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it may be a direct connection, a connection through the interior of two components, or an interaction relationship between two components. For those of ordinary skill in the art, the meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] The above has introduced in detail a continuous welding device and its welding method for a pipeline hydraulic damper assembly provided by the embodiments of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only for helping to understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A continuous welding device for a pipeline hydraulic damper assembly, comprising a seam welding machine body (1), characterized in that: On one side of the seam welding machine body (1), there is a pair of roller electrodes (101). On one side of the roller electrodes (101), there is a welding wheel base (102). At the lower end of the welding wheel base (102), there is a second gear (103). The second gear (103) drives the roller electrodes (101) to rotate. At the lower ends of a pair of second gears (103), there is a first gear (104) engaged therewith. Between the first gear (104) and the second gear (103), there is a pair of hinge rods (105). Inside the first gear (104), there is a rotating shaft (106) passing through and fixedly connected thereto. Below the rotating shaft (106), there is a lifting frame (2). One end of the rotating shaft (106) has an external thread. The rotating shaft (106) passes through and is threadedly connected to a gear column (107). On both sides of the gear column (107), there is a pair of friction discs (108). The rotating shaft (106) passes through the pair of friction discs (108) and is fixedly connected thereto. On one side of the gear column (107), there is a vertical rack (109) engaged therewith.

2. The continuous welding device for a pipeline hydraulic damper assembly according to claim 1, characterized in that: At the lower end of the roller electrode (101), there is a rolling wheel (110). The rolling wheel (110) is in contact with the roller electrode (101). One end of the rolling wheel (110) is fixedly connected to a transmission rod (111). The transmission rod (111) passes through the welding wheel base (102) and is rotatably connected thereto. The transmission rod (111) passes through the second gear (103) and is fixedly connected thereto. The transmission rod (111) passes through the hinge rod (105) and is rotatably connected thereto; At one end of the seam welding machine body (1), there are several horizontal openings for the displacement of the transmission rod (111) and the roller electrode (101).

3. The continuous welding device for a pipeline hydraulic damper assembly according to claim 1, characterized in that: At one end of the welding wheel base (102), there are several first guide rods (112) fixedly connected thereto. The first guide rods (112) pass through the seam welding machine body (1) and are slidably engaged therewith.

4. The continuous welding device for a pipeline hydraulic damper assembly according to claim 1, characterized in that: At the lower end of the lifting frame (2), there are several second guide rods (204) fixedly connected thereto. The second guide rods (204) pass through the bottom of the seam welding machine body (1) and are slidably engaged therewith.

5. The continuous welding device for a pipeline hydraulic damper assembly according to claim 1, characterized in that: The lifting frame (2) includes a first baffle (201), a second baffle (202), and a third baffle (203). The rotating shaft (106) passes through the first baffle (201), the second baffle (202), and the third baffle (203) and is rotatably connected thereto. A pair of friction discs (108) are arranged between the second baffle (202) and the first baffle (101). There is a gap between the friction disc (108) and the second baffle (202) or the first baffle (201). The vertical rack (109) is between the pair of friction discs (108). The vertical rack (109) passes through the lifting frame (2) and is slidably engaged therewith. The lower end of the vertical rack (109) is fixedly connected to the bottom of the seam welding machine body (1); On the outside of the first baffle (201), there is a motor (8) fixedly connected thereto. The motor (8) is used to drive the rotating shaft (for driving the rotating shaft (106)). There is a square opening at the rear side of the seam welding machine body (1). The first baffle (201) is slidably engaged with the square opening.

6. The continuous welding device for a pipeline hydraulic damper assembly according to claim 1, characterized in that: The upper end of the seam welding machine body (1) is provided with a blanking port. The upper end of the seam welding machine body (1) is fixedly connected with a first blanking vertical frame (301) and a second blanking vertical frame (302). The cylinder barrels (6) are stacked and placed in the first blanking vertical frame (301), and the lifting ring end covers (7) are stacked and placed in the second blanking vertical frame (302). A vertical groove is provided in the middle side of the second blanking vertical frame (302), and the bolts at one end of the lifting ring end cover (7) extend out of the vertical groove. Limit clamping parts are arranged at the lower ends of both the first blanking vertical frame (301) and the second blanking vertical frame (302).

7. A continuous welding device for a pipeline hydraulic damper assembly according to claim 6, characterized in that: The limit clamping part includes a first V-shaped clamping block (303) and a second V-shaped clamping block (304). A rotating rod (305) penetrates and is fixedly connected to the inner sides of the first V-shaped clamping block (303) and the second V-shaped clamping block (304). Support blocks (306) are fixedly connected to both ends of the first blanking vertical frame (301). The rotating rod (305) penetrates through the support block (306) and is rotatably connected thereto. A torsion spring part is arranged between the rotating rod (305) and the support block (306).

8. A continuous welding device for a pipeline hydraulic damper assembly according to claim 7, characterized in that: A feeding part (4) is arranged on one side of the seam welding machine body (1). The feeding part (4) includes a pressing ring (401). The inner diameter of the pressing ring (401) is adapted to the bolt diameter of the lifting ring end cover (7). A displacement driving mechanism is arranged at one end of the pressing ring (401).

9. The continuous welding device for a pipeline hydraulic damper assembly according to claim 1, characterized in that: A pair of support roller rods (3) are rotatably connected inside the seam welding machine body (1). An outlet (5) is provided at the rear side of the seam welding machine body (1). A baffle (501) is slidably fitted inside the outlet (5).

10. The welding method of a continuous welding device for a pipeline hydraulic damper assembly according to claim 1, characterized in that Including the following steps: S1. Threadedly connect the rotating shaft (106) with the gear column (107) so that the gear column (107) abuts against one side friction disc (108). Make the gear column (107) and the rotating shaft (106) be fastened to each other through frictional force. S2. Then rotate the rotating shaft (106) to drive the gear column (107) to displace downward along the vertical rack (109), driving the lifting frame (2) and the first gear (104) to displace downward. The first gear (104) pulls a pair of second gears (103) and a pair of welding wheel bases (102) to displace horizontally relative to each other through the hinge rod (105), so that a pair of roller electrodes (101) are clamped at the weld seam of the cylinder barrel (6) and the lifting ring end cover (7). S4. Then, through the meshing action of the vertical rack (109) and the gear column (107), limit the gear column (107) from rotating. Then continue to rotate the rotating shaft (106) to drive the gear column (107) to displace toward the other side friction disc (108) through threaded connection. While the rotating shaft (106) rotates, drive the rotation of the roller electrode (101) to complete the welding work. S5. Then the gear column (107) abuts against the other side friction disc (108). Rotate the rotating shaft (106) in the reverse direction to reset the lifting frame (2) and the roller electrode (101), and release the welded cylinder barrel (6).

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