Valve body welding positioning tool

Abstract

The invention relates to the technical field of valve welding, in particular to a valve body welding positioning tool which comprises a supporting assembly used for containing a valve body, an inner positioning assembly for positioning the inner side of the valve body and an outer positioning assembly for positioning the outer side of the valve body are arranged on the supporting assembly, and a pressing assembly corresponding to the valve body is arranged on the supporting assembly; the pressing assembly is pressed downwards through the dead weight of the valve body, the inner positioning assembly and the outer positioning assembly are synchronously driven to move towards the center of the valve body, radial accurate positioning of the valve body is achieved through inner and outer side extrusion, manual repeated position adjustment is avoided, and measurement errors are eliminated. And meanwhile, when the transmission assembly moves in the inner positioning assembly and the outer positioning assembly, the support conveying assembly is hydraulically driven, the valve body supports are extruded to the outer sides of the valve bodies, automatic alignment before welding is achieved, positioning of the two valve body supports can be synchronously completed, and efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of valve welding, and in particular to a valve body welding positioning tool. Background Art

[0002] In industrial fluid control systems, the valve body is a key component for controlling fluid flow and direction. Its installation stability has a significant impact on the reliability of the system. To ensure the stability of the valve body during use, it is usually necessary to weld a bracket on the outside of the valve body to provide solid support. At present, the welding process of valve body brackets mostly relies on manual operation, that is, the operator first docks and places the bracket with the valve body, and then performs the welding operation. This traditional welding method has significant defects. On the one hand, due to the lack of precise positioning auxiliary tools, during the docking process, the operator needs to rely on experience to repeatedly calibrate the relative position of the bracket and the valve body to meet the welding requirements. This process not only consumes a lot of time and manpower, but also has high difficulty in position adjustment. On the other hand, the operator not only needs to weld one by one, but also needs to repeatedly calibrate the spacing, angle and other parameters of the two sets of legs through measuring tools to ensure their symmetrical setting. It is difficult to achieve fast and accurate positioning, resulting in low welding efficiency. Therefore, a valve body welding positioning tool is proposed to facilitate the rapid positioning of the valve body bracket and improve production efficiency. Summary of the Invention

[0003] In response to the problems in the prior art, the present invention provides a valve body welding positioning tool, which facilitates the rapid positioning of the valve body bracket and improves production efficiency.

[0004] The technical solution adopted by the present invention to solve its technical problems is a valve body welding positioning tool, including a support assembly for placing the valve body, the support assembly is provided with an inner positioning assembly for positioning the inner side of the valve body, and an outer positioning assembly for positioning the outer side of the valve body, the support assembly is provided with a pressing assembly corresponding to the valve body, and the pressing assembly drives the inner positioning assembly and the outer positioning assembly to approach each other after being pressed down by the valve body, and the outer positioning assembly is provided with a bracket conveying assembly for supporting the valve body bracket to be welded, and a transmission assembly is provided between the inner positioning assembly and the outer positioning assembly, and when the inner positioning assembly and the outer positioning assembly are close to each other, the transmission assembly drives the bracket conveying assembly to squeeze the valve body bracket toward one side of the valve body.

[0005] Specifically, the inner positioning assembly includes an inner first mounting frame, vertically arranged first positioning rollers are installed on both sides of the first mounting frame, and a first support member is provided on one side of the first mounting frame; the outer positioning assembly includes a second mounting frame, vertically arranged second positioning rollers are installed on both sides of the second mounting frame, and a second support member is provided on a side of the second mounting frame away from the first mounting frame; The first support member is fixedly connected to a first pneumatic telescopic rod on a side away from the first positioning roller, and the second support member is fixedly connected to a second pneumatic telescopic rod on a side away from the second positioning roller. A horizontally arranged support seat is provided below the support assembly, and the fixed ends of the first pneumatic telescopic rod and the second pneumatic telescopic rod are fixedly connected to the upper surface of the support seat through a vertically arranged connecting rod.

[0006] Specifically, the pressing assembly includes an arc-shaped frame fixedly connected to the supporting assembly and opening upward, an extrusion block is slidably connected inside the arc-shaped frame, an air storage cushion is arranged between the extrusion block and the inner side of the arc-shaped frame, the fixed ends of the first pneumatic telescopic rod and the second pneumatic telescopic rod are both connected to an air inlet connector, and the air storage cushion is connected to the air inlet connector through a pipeline.

[0007] Specifically, the bracket conveying assembly includes support plates symmetrically arranged on both sides of the second mounting frame, each of which is fixedly connected to a horizontally arranged first hydraulic telescopic rod, and the output end of the first hydraulic telescopic rod is fixedly connected to a vertically arranged conveying plate, and a magnet is provided on the side of the conveying plate close to the first hydraulic telescopic rod, and a plurality of groups of circumferentially distributed conical blocks are fixedly connected to the magnet.

[0008] Specifically, the transmission assembly includes mounting plates respectively arranged on one side of the first mounting frame and the second mounting frame, a second hydraulic telescopic rod is fixedly connected between the two sets of mounting plates, and a return spring is fixedly connected between the output end of the second hydraulic telescopic rod and the mounting plate; A first joint connected to the first hydraulic telescopic rod is provided on one side of the support plate, and a second joint connected to the fixed end of the second hydraulic telescopic rod is provided on one side of the mounting plate. The second joint is connected to the first joint through a pipeline.

[0009] Specifically, symmetrically arranged cleaning components are provided on both sides of the external positioning component, and the cleaning components include elastic hinged seats symmetrically arranged on the outside of the second mounting frame, and a horizontally arranged third pneumatic telescopic rod is hinged on the elastic hinged seat, and the fixed end of the third pneumatic telescopic rod is connected to the air storage cushion through a pipeline and an exhaust valve; The output end of the third pneumatic telescopic rod is provided with a vertically arranged cleaning block, and the output end of the third pneumatic telescopic rod is fixedly connected to two groups of vertically arranged positioning rods, the upper ends of the positioning rods pass through the cleaning block and are slidably connected to the cleaning block, the upper ends of the positioning rods are provided with a limit plate, and the upper and lower corners of the cleaning block close to the valve body are provided with wedge-shaped extrusion surfaces.

[0010] Specifically, the support assembly includes a first support ring and a second support ring arranged horizontally, the second support ring is located on the inner side of the first support ring, the first support ring and the second support ring are both provided with notches, the two ends of the first support ring and the second support ring are fixedly connected to the two sides of the arc frame, the first support ring and the second support ring are provided with several groups of circumferentially distributed support plates, and the lower surfaces of the first support ring and the second support ring are provided with several groups of vertically arranged support legs.

[0011] Specifically, an arc-shaped positioning frame is provided on one side of the conveying plate, and several groups of balls are provided on the inner side of the arc-shaped positioning frame. A vertically arranged support rod is fixedly connected to the bottom of the arc-shaped positioning frame, and the lower end of the support rod is fixedly connected to a horizontal plate arranged in water, and one end of the horizontal plate is fixedly connected to the first support ring.

[0012] Specifically, the support seat is located below the first support ring, and the support seat is fixedly connected to the lower surface of the transverse plate through a pull rod.

[0013] Beneficial effects of the present invention: The valve body welding positioning tool described in the present invention utilizes the valve body's own weight to press down the pressing component, synchronously driving the inner positioning component and the outer positioning component to move toward the center of the valve body, and realizing radial precise positioning of the valve body by extrusion of the inner and outer sides, thereby avoiding manual repeated position adjustment and eliminating measurement errors; at the same time, when the inner positioning component and the outer positioning component move, the transmission component drives the bracket conveying component through the hydraulic drive to squeeze the valve body bracket to the outside of the valve body, realizing automatic alignment before welding, and can synchronously complete the positioning of the two sets of valve body brackets, thereby improving efficiency.

[0014] The valve body welding positioning tool described in the present invention has a cleaning component that, when the valve body is pressed down, drives the third pneumatic telescopic rod and the cleaning block to fit the outer side of the valve body through the air pressure of the air storage cushion, scraping off impurities such as oil, oxide scale, etc., providing a clean surface for welding, which is beneficial to improving welding quality and weld strength without the need for manual pretreatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and examples.

[0016] Figure 1 is an axonometric drawing of the present invention; Figure 2 It is another perspective axonometric drawing of the present invention; Figure 3 for Figure 2 A magnified view of area A; Figure 4 This is a schematic diagram of the cross-sectional structure of the arc frame of the present invention; Figure 5 This is a schematic structural diagram of the first support ring and the second support ring of the present invention; Figure 6for Figure 4 A magnified view of area B; Figure 7 This is a schematic diagram of the arc-shaped positioning frame structure of the present invention; Figure 8 for Figure 7 Magnified view of area C; Figure 9 This is a schematic diagram of the structure of the valve body bracket after installation of the present invention; In the figure: 1, first mounting frame; 2, first positioning roller; 3, first support member; 4, second mounting frame; 5, second positioning roller; 6, second support member; 7, first pneumatic telescopic rod; 8, second pneumatic telescopic rod; 9, support seat; 10, connecting rod; 11, arc frame; 12, extrusion block; 13, air storage cushion; 14, air inlet connector; 15, support plate; 16, first hydraulic telescopic rod; 17, conveying plate; 18, magnet; 19, conical block; 20, mounting plate; 21, second hydraulic 1. Pneumatic telescopic rod; 22. Return spring; 23. First joint; 24. Second joint; 25. Elastic hinge seat; 26. Third pneumatic telescopic rod; 27. Cleaning block; 28. Positioning rod; 29. ​​Limiting plate; 30. Wedge-shaped extrusion surface; 31. First support ring; 32. Second support ring; 33. Support plate; 34. Support leg; 35. Arc-shaped positioning frame; 36. Ball bearing; 37. Support rod; 38. Cross plate; 39. Pull rod; 40. Support leg; 41. Support seat; 42. Mounting hole. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] In order to facilitate the rapid positioning of the valve body bracket and improve production efficiency, as an embodiment of the present invention, Figure 1 、 Figure 2 As shown, a valve body welding positioning tool described in the present invention includes a support assembly for placing the valve body, the support assembly is provided with an inner positioning assembly for positioning the inner side of the valve body, and an outer positioning assembly for positioning the outer side of the valve body, the support assembly is provided with a pressing assembly corresponding to the valve body, and the pressing assembly drives the inner positioning assembly and the outer positioning assembly to approach each other after being pressed down by the valve body, and the outer positioning assembly is provided with a bracket conveying assembly for supporting the valve body bracket to be welded, and a transmission assembly is provided between the inner positioning assembly and the outer positioning assembly, and the transmission assembly drives the bracket conveying assembly to squeeze the valve body bracket toward one side of the valve body when the inner positioning assembly and the outer positioning assembly are close to each other.

[0019] During use, the two sets of valve body brackets to be welded are placed horizontally on the bracket conveying assembly, and the valve body is hoisted horizontally to the support assembly by hoisting equipment. After the valve body is placed, the valve body's own weight presses down to trigger the pressing assembly, which synchronously drives the inner positioning assembly and the outer positioning assembly to move toward the center of the valve body. The inner and outer positioning assemblies squeeze the valve body to achieve precise positioning. This process does not require manual calibration, and the valve body is automatically clamped and fixed to ensure its position accuracy. When the inner positioning assembly and the outer positioning assembly move toward each other, the transmission assembly is driven synchronously, and the valve body bracket is driven by the bracket conveying assembly to move horizontally toward the valve body until the valve body bracket and the valve body are in contact, and the alignment and fitting are automatically completed, achieving precise positioning before welding, avoiding manual adjustment errors, and improving positioning efficiency. The positioning operation of the two sets of valve body brackets can be completed synchronously. After the positioning is completed, the contact parts of the valve body and the valve body bracket are welded by welding equipment to ensure that the two are firmly connected. No mid-way position calibration is required throughout the process, effectively reducing the time spent on pre-welding preparation. After the welding operation is completed, the valve body is slowly lifted by the lifting equipment, so that the valve body and the pressing assembly are gradually separated. At this time, the pressing assembly resets due to the loss of extrusion force, and drives the inner positioning assembly and the outer positioning assembly to reset outward, and simultaneously releases the clamping state of the valve body. At the same time, during the resetting process of the inner positioning assembly and the outer positioning assembly, the transmission assembly drives the bracket conveying assembly to return to the initial position, completing the automated resetting process, reducing manual intervention, and preparing for the next set of valve body and bracket positioning welding operations.

[0020] In order to facilitate the positioning of the inside and outside of the valve body, for example, Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 As shown, the present invention further includes that the inner positioning assembly includes an inner first mounting frame 1, vertically arranged first positioning rollers 2 are installed on both sides of the first mounting frame 1, and a first support member 3 is provided on one side of the first mounting frame 1; the outer positioning assembly includes a second mounting frame 4, vertically arranged second positioning rollers 5 are installed on both sides of the second mounting frame 4, and a second support member 6 is provided on the side of the second mounting frame 4 away from the first mounting frame 1; The first support member 3 is fixedly connected to the first pneumatic telescopic rod 7 on the side away from the first positioning roller 2, and the second support member 6 is fixedly connected to the second pneumatic telescopic rod 8 on the side away from the second positioning roller 5. A horizontally arranged support seat 9 is provided below the support assembly, and the fixed ends of the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 are fixedly connected to the upper surface of the support seat 9 through a vertically arranged connecting rod 10.

[0021] When in use, the valve body is slowly placed on the supporting assembly, and the deadweight of the valve body generates vertical downward pressure on the pressing assembly. After the pressing assembly is pressurized, the pressing assembly drives the output ends of the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 to extend through the pipeline, and the first pneumatic telescopic rod 7 drives the first support member 3 and the first positioning roller 2 to move toward the valve body, and the second pneumatic telescopic rod 8 drives the second support member 6 and the second positioning roller 5 to move toward the valve body. The first positioning roller 2 fits tightly against the inner wall of the valve body to limit the displacement in the inner diameter direction of the valve body. The second positioning roller 5 simultaneously presses the outer wall of the valve body to form a clamping force with the inner positioning roller to ensure that the valve body is completely fixed in the radial direction. The valve body is positioned on the supporting assembly, which is convenient for the subsequent welding operation of the valve body bracket. The support seat 9 and the connecting rod 10 can ensure the overall stability of the first positioning roller 2 and the second positioning roller 5, making it easier to position the inside and outside of the valve body. The pressing assembly is triggered by the gravity of the valve body itself, and the synchronous movement of the first positioning roller 2 and the second positioning roller 5 can be achieved without an additional power source, simplifying the operation process; the symmetrical arrangement of the first positioning roller 2 and the second positioning roller 5 ensures that the center of the valve body and the center axis of the tooling are automatically aligned, eliminating manual measurement errors. At the same time, positioning can be completed with a single placement, reducing the repeated calibration steps of traditional tooling and improving welding efficiency.

[0022] In order to facilitate driving the inner positioning assembly and the outer positioning assembly to clamp and position the valve body, for example, Figure 2 、 Figure 4 、 Figure 6 As shown, the present invention also includes that the pressing assembly includes an arc-shaped frame 11 fixedly connected to the supporting assembly and opening upward, an extrusion block 12 is slidably connected inside the arc-shaped frame 11, and an air storage cushion 13 is arranged between the extrusion block 12 and the inner side of the arc-shaped frame 11, and the fixed ends of the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 are both connected to an air inlet connector 14, and the air storage cushion 13 is connected to the air inlet connector 14 through a pipeline.

[0023] When in use, the valve body is placed horizontally on the supporting assembly, and the weight of the valve body will vertically press the extrusion block 12 in the pressing assembly downward, and the extrusion block 12 slides downward in the arc frame 11, and the air storage cushion 13 between the extrusion block 12 and the inner side of the arc frame 11 is compressed. After the air storage cushion 13 is pressurized, the internal gas is transported to the air inlet joint 14 of the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 through the pipeline, pushing the output ends of the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 to extend synchronously. When the first pneumatic telescopic rod 7 extends, it drives the first positioning roller 2 of the inner positioning assembly to move toward the inner side of the valve body until it fits with the inner wall of the valve body. When the second pneumatic telescopic rod 8 extends, it drives the second positioning roller 5 of the outer positioning assembly to move toward the outer side of the valve body until it fits tightly with the outer side wall of the valve body. The first positioning roller 2 and the second positioning roller 5 achieve radial clamping of the valve body through extrusion, completing the positioning of the valve body. There is no need to manually adjust the positioning components, which reduces the repeated calibration steps in traditional welding, reduces the operation difficulty and labor cost, and at the same time avoids displacement of the valve body during the welding process.

[0024] In order to facilitate the fixing of the valve body bracket, for example, Figure 2 、 Figure 3 、 Figure 7 、 Figure 8 、 Figure 9 As shown, the present invention also includes that the bracket conveying assembly includes support plates 15 symmetrically arranged on both sides of the second mounting frame 4, and the support plates 15 are fixedly connected to a horizontally arranged first hydraulic telescopic rod 16, and the output end of the first hydraulic telescopic rod 16 is fixedly connected to a vertically arranged conveying plate 17, and a magnet 18 is provided on the side of the conveying plate 17 close to the first hydraulic telescopic rod 16, and a plurality of groups of circumferentially distributed conical blocks 19 are fixedly connected to the magnet 18.

[0025] When in use, the two sets of valve body brackets are placed horizontally on one side of the conveying plate 17 close to the first hydraulic telescopic rod 16, so that one end of the valve body bracket contacts the magnet 18 on the conveying plate 17. The magnet 18 magnetically attracts the valve body bracket, and at the same time, the tapered block 19 on the magnet 18 is embedded in the mounting hole 42 on the surface of the valve body bracket, forming a positioning clamping connection, thereby completing the fixation of one end of the valve body bracket; The valve body is hoisted onto the supporting assembly, and the dead weight of the valve body squeezes the air storage cushion 13 of the pressing assembly, driving the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 to approach each other. When the second pneumatic telescopic rod 8 moves, it drives the second mounting frame 4 of the external positioning assembly to move synchronously, and then drives the first hydraulic telescopic rod 16, the conveying plate 17 and the valve body bracket to move toward the valve body through the supporting plate 15. At the same time, when the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 approach each other, the transmission structure is driven to work, and the output section of the first hydraulic telescopic rod 16 is shortened by the transmission structure. The first hydraulic telescopic rod 16 drives the conveying plate 17 to move further toward the outside of the valve body, so that the valve body bracket is close to the valve body with the conveying plate 17. When the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 complete the clamping of the inside and outside of the valve body, the conveying plate 17 drives the valve body bracket to make close contact with the outside of the valve body, completing the positioning before welding; After welding is completed, the hoisting valve body is moved upward, the valve body no longer squeezes the air storage cushion 13, the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 are reset, and the supporting plate 15, the first hydraulic telescopic rod 16 and the conveying plate 17 are driven back to the initial position, so as to facilitate the subsequent positioning and welding of the valve body bracket of the next group of valve bodies; It should be pointed out that the valve body bracket described in the present invention includes a support leg 40 and a support 41. The support 41 is provided with circumferentially distributed mounting holes 42. When the valve body bracket is placed, the mounting holes 42 on the support 41 are aligned with the conical block 19, and the support 41 is magnetically adsorbed by the magnet 18 to ensure the overall stability of the valve body bracket; after welding is completed, when the valve body is hoisted and moved upward, the mounting holes 42 of the support 41 are squeezed and contacted with the outer side of the conical block 19, and the conical block 19 facilitates the separation of the support 41 from the conical block 19.

[0026] In order to facilitate the completion of the fitting of the valve body bracket before welding, for example, Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the present invention also includes that the transmission assembly includes mounting plates 20 respectively arranged on one side of the first mounting frame 1 and the second mounting frame 4, a second hydraulic telescopic rod 21 is fixedly connected between the two sets of mounting plates 20, and a return spring 22 is fixedly connected between the output end of the second hydraulic telescopic rod 21 and the mounting plate 20; A first joint 23 communicating with the first hydraulic telescopic rod 16 is provided on one side of the support plate 15, and a second joint 24 communicating with the fixed end of the second hydraulic telescopic rod 21 is provided on one side of the mounting plate 20. The second joint 24 is communicated with the first joint 23 through a pipeline.

[0027] When in use, the valve body bracket is placed on the conveying plate 17 of the bracket conveying assembly and fixed by the magnet 18 and the conical block 19. At this time, the second hydraulic telescopic rod 21 of the transmission assembly is in a naturally extended state, and the return spring 22 is not compressed. When the valve body is hoisted to the support assembly, the air storage cushion 13 of the pressing assembly is squeezed, driving the inner positioning assembly and the outer positioning assembly to move toward the center of the valve body. At this time, the first mounting frame 1 and the second mounting frame 4 drive the mounting plate 20 to approach each other, squeezing the second hydraulic telescopic rod 21 to make it contract, and the return spring 22 is compressed. When the second hydraulic telescopic rod 21 contracts, the hydraulic oil at the fixed end flows to the first connector 23 through the second joint 24 and the pipeline, pushing the output end of the first hydraulic telescopic rod 16 to shorten, and the first hydraulic telescopic rod 16 drives the conveying plate 17 to move toward the valve body, so that the valve body bracket is squeezed to the outside of the valve body along with the conveying plate 17, completing the precise fit before welding; After welding is completed, the valve body is lifted, the pressing assembly is reset, the inner positioning assembly and the outer positioning assembly are reset and moved, the pressure between the mounting plates 20 is released, the reset spring 22 pushes the second hydraulic telescopic rod 21 to extend, the hydraulic oil flows back through the pipeline, the first hydraulic telescopic rod 16 is reset synchronously, and the conveying plate 17 returns to its initial position to prepare for the next set of welding; The transmission assembly realizes the linkage between the inner positioning assembly, the outer positioning assembly and the bracket conveying assembly through hydraulic transmission, and automatically triggers the bracket positioning by using the mechanical energy of the valve body downward pressure, without the need for an additional power source, reducing manual operation and positioning efficiency.

[0028] In order to facilitate the surface cleaning of the valve body before welding, for example, Figure 1 、 Figure 7 、 Figure 8 As shown, the present invention also includes symmetrically arranged cleaning components on both sides of the external positioning component, and the cleaning components include elastic hinge seats 25 symmetrically arranged on the outside of the second mounting frame 4, and a horizontally arranged third pneumatic telescopic rod 26 is hinged on the elastic hinge seat 25. The fixed end of the third pneumatic telescopic rod 26 is connected to the air storage cushion 13 through a pipeline and an exhaust valve; The output end of the third pneumatic telescopic rod 26 is provided with a vertically arranged cleaning block 27, and the output end of the third pneumatic telescopic rod 26 is fixedly connected to two groups of vertically arranged positioning rods 28. The upper ends of the positioning rods 28 pass through the cleaning block 27 and are slidably connected to the cleaning block 27. The upper ends of the positioning rods 28 are provided with a limit plate 29, and the upper and lower corners of the cleaning block 27 close to the valve body are provided with wedge-shaped extrusion surfaces 30.

[0029] During use, when the lower end of the valve body is placed on the support assembly and the external positioning assembly moves toward the valve body, the cleaning assembly moves synchronously with the external positioning assembly. The cleaning assembly is first inserted between the flanges on the upper and lower sides of the valve body and cooperates with the positioning rod 28 to enable the cleaning block 27 to move up and down, thereby preventing the cleaning block 27 from affecting the subsequent downward movement of the valve body. As the valve body continues to move downward, the air storage cushion 13 of the pressing assembly is squeezed, and the gas in the air storage cushion 13 enters the fixed end of the third air pressure telescopic rod 26 through the pipeline and the exhaust valve. The air pressure drives the output end of the third air pressure telescopic rod 26 to extend, pushing the cleaning block 27 to expand toward the outside of the valve body. At the same time, the second air pressure telescopic rod 8 is driven by the air pressure of the air storage cushion 13, driving the second mounting frame 4 to move toward the valve body, and then pulling the third air pressure telescopic rod 26 and the cleaning block 27 synchronously close to the valve body through the elastic hinge seat 25. At this time, the cleaning block 27 is squeezed and contacted with the outside of the valve body, cooperating with the expansion of the third air pressure telescopic rod 26 to synchronously scrape off impurities such as oil, oxide scale and the like on the outside of the valve body, completing the surface cleaning before welding; At the same time, when the second mounting frame 4 drives the third pneumatic telescopic rod 26 to expand outward, the elastic hinge seat 25 undergoes elastic deformation due to the force, storing potential energy; After welding is completed, the valve body is lifted by the lifting equipment and no longer squeezes the air storage cushion 13. Relying on the reset movement of the first air pressure telescopic rod 7 and the second air pressure telescopic rod 8, the second installation frame 4 is driven to reset and move synchronously. At the same time, the gas at the fixed end of the third air pressure telescopic rod 26 flows back into the air storage cushion 13, and the potential energy stored in the elastic hinge seat 25 is released, driving the third air pressure telescopic rod 26 and the cleaning block 27 to reset toward the second installation frame 4. As the second air pressure telescopic rod 8 is reset, the second installation frame 4 drives the elastic hinge seat 25, the third air pressure telescopic rod 26 and the cleaning block 27 to completely return to the initial state, waiting for the next time the valve body is placed to complete the cleaning of the welding position of the valve body; When the welded valve body is lifted up by the hoisting equipment, the flange at the lower end of the valve body gradually moves away from the supporting assembly as the lifting action progresses. When the flange moves to the lower boundary of the cleaning block 27, the edge of the flange contacts the wedge-shaped extrusion surface 30 at the lower corner of the cleaning block 27, generating a thrust on the cleaning block 27, causing the cleaning block 27 to slide on the positioning rod 28, thereby preventing the valve body from being obstructed by the cleaning block 27 during the upward movement.

[0030] For example, Figure 1 、 Figure 4 、 Figure 5 As shown, the present invention also includes that the support assembly includes a first support ring 31 and a second support ring 32 arranged horizontally, the second support ring 32 is located on the inner side of the first support ring 31, and the first support ring 31 and the second support ring 32 are both provided with notches, and the two ends of the first support ring 31 and the second support ring 32 are fixedly connected to the two sides of the arc frame 11, and the first support ring 31 and the second support ring 32 are provided with a plurality of groups of circumferentially distributed support plates 33, and the lower surfaces of the first support ring 31 and the second support ring 32 are provided with a plurality of groups of vertically arranged support legs 34.

[0031] When in use, the first support ring 31, the second support ring 32 and the support plate 33 can improve the overall stability, which is convenient for the stable placement of the flange valve body; at the same time, the first support ring 31 and the second support ring 32 can further improve the overall stability of the arc frame 11, which is convenient for the valve body to be pressed down to drive the pressing assembly to work when the valve body is placed; the support legs 34 can further ensure the overall stability of the support assembly.

[0032] For example, Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the present invention also includes that an arc-shaped positioning frame 35 is provided on one side of the conveying plate 17, and a plurality of groups of balls 36 are provided on the inner side of the arc-shaped positioning frame 35. A vertically arranged support rod 37 is fixedly connected to the bottom of the arc-shaped positioning frame 35, and a horizontal plate 38 is fixedly connected to the lower end of the support rod 37, and one end of the horizontal plate 38 is fixedly connected to the first support ring 31.

[0033] During use, when the valve body bracket is placed on the conveying plate 17, the outer side of the valve body bracket is located inside the arc-shaped positioning frame 35. The contour of the arc-shaped positioning frame 35 matches the curvature of the outer side of the valve body bracket, forming a semi-enclosed support, thereby facilitating the horizontal movement of the valve body bracket and providing convenience for subsequent welding. The balls 36 on the inside of the arc-shaped positioning frame 35 are in contact with the surface of the valve body bracket. When the conveying plate 17 is driven by the first hydraulic telescopic rod 16 to move toward the valve body, the rolling of the balls 36 can reduce the resistance between the valve body bracket and the arc-shaped positioning frame 35, making the valve body bracket move more smoothly. Even under heavy load conditions, the balls 36 can ensure the smooth movement of the valve body bracket.

[0034] For example, Figure 4 、 Figure 6 As shown, the present invention further includes that the support seat 9 is located below the first support ring 31 , and the support seat 9 is fixedly connected to the lower surface of the transverse plate 38 via a pull rod 39 .

[0035] During use, the pull rod 39 can further ensure the stability of the support base 9.

[0036] When the present invention is in use, two sets of valve body brackets to be welded are horizontally placed on the conveying plate 17 of the bracket conveying assembly, so that the mounting holes 42 on the supports 41 are aligned with the tapered blocks 19 on the conveying plate 17, and the valve body brackets are fixed by the magnetic attraction of the magnets 18, ensuring that the tapered blocks 19 are embedded in the mounting holes 42; when the valve body brackets are placed on the conveying plate 17, the outer sides of the valve body brackets are located inside the arc-shaped positioning frame 35, and the contour of the arc-shaped positioning frame 35 matches the outer curvature of the valve body brackets, forming a semi-enclosed support, thereby facilitating the horizontal movement of the valve body brackets and providing convenience for subsequent welding; The valve body is hoisted onto the supporting assembly. When the lower end of the valve body is placed on the supporting assembly, when the external positioning assembly moves toward the valve body, the cleaning assembly moves synchronously with the external positioning assembly. The cleaning assembly is first inserted between the flanges on the upper and lower sides of the valve body, and cooperates with the positioning rod 28 to enable the cleaning block 27 to move up and down, thereby preventing the cleaning block 27 from affecting the subsequent downward movement of the valve body; as the valve body continues to move downward, the air storage cushion 13 of the pressing assembly is squeezed, and the gas in the air storage cushion 13 enters the fixed end of the third pneumatic telescopic rod 26 through the pipeline and the exhaust valve. The air pressure drives the output end of the third pneumatic telescopic rod 26 to extend, pushing the cleaning block 27 expands toward the outside of the valve body. At the same time, the second pneumatic telescopic rod 8 is driven by the air pressure of the air storage cushion 13, driving the second mounting frame 4 to move toward the valve body, and then pulling the third pneumatic telescopic rod 26 and the cleaning block 27 synchronously close to the valve body through the elastic hinge seat 25. At this time, the cleaning block 27 is squeezed into contact with the outside of the valve body, cooperating with the expansion of the third pneumatic telescopic rod 26 to synchronously scrape off oil, oxide scale and other impurities on the outside of the valve body, completing the surface cleaning before welding; at the same time, when the second mounting frame 4 drives the third pneumatic telescopic rod 26 to expand outward, the elastic hinge seat 25 is elastically deformed due to the force, storing potential energy; At the same time, the weight of the valve body will vertically press the extrusion block 12 in the pressing assembly downward, and the extrusion block 12 slides downward in the arc frame 11, and the air storage cushion 13 between the extrusion block 12 and the inner side of the arc frame 11 is compressed. After the air storage cushion 13 is pressurized, the internal gas is transported to the air inlet joint 14 of the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 through the pipeline, pushing the output ends of the first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 to extend synchronously, and the first pneumatic telescopic rod 7 drives the first support member 3 and the first positioning roller 2 to move toward the valve body, and the second pneumatic telescopic rod 8 drives the second support member 6 and the second positioning roller 5 to move toward the valve body. The first positioning roller 2 is tightly fitted with the inner side wall of the valve body to limit the displacement in the inner diameter direction of the valve body, and the second positioning roller 5 synchronously presses the outer side wall of the valve body to form a clamping force with the inner positioning roller to ensure that the valve body is completely fixed in the radial direction, and the valve body is positioned on the support assembly, which is convenient for subsequent welding operations of the valve body bracket; When the first mounting frame 1 and the second mounting frame 4 drive the mounting plate 20 toward each other, squeezing the second hydraulic telescopic rod 21 to cause it to contract, the return spring 22 is compressed, and when the second hydraulic telescopic rod 21 contracts, the hydraulic oil at the fixed end flows through the second joint 24 and the pipeline to the first joint 23, pushing the output end of the first hydraulic telescopic rod 16 to shorten. The first hydraulic telescopic rod 16 drives the conveying plate 17 to move toward the valve body, so that the valve body bracket is squeezed to the outside of the valve body along with the conveying plate 17, completing the precise fitting before welding; the rolling of the ball 36 can reduce the resistance between the valve body bracket and the arc-shaped positioning frame 35, making the valve body bracket move more smoothly; After welding is completed, the hoisting valve body moves up, and the valve body no longer squeezes the air storage cushion 13. The first pneumatic telescopic rod 7 and the second pneumatic telescopic rod 8 are reset, driving the support plate 15, the first hydraulic telescopic rod 16 and the conveying plate 17 to return to their initial positions, so as to facilitate the subsequent positioning and welding of the valve body bracket of the next group of valve bodies; at the same time, the gas at the fixed end of the third pneumatic telescopic rod 26 flows back into the air storage cushion 13, and the potential energy stored in the elastic hinge seat 25 is released, driving the third pneumatic telescopic rod 26 and the cleaning block 27 to reset toward the second mounting frame 4. As the second pneumatic telescopic rod 8 is reset, the second mounting frame 4 drives the elastic hinge seat 25, the third pneumatic telescopic rod 26 and the cleaning block 27 to completely return to their initial state, waiting for the next valve body to be placed to complete the cleaning of the welding position of the valve body.

[0037] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve body welding positioning tool, characterized in that: It includes a support assembly for placing the valve body, the support assembly is provided with an inner positioning assembly for positioning the inner side of the valve body, and an outer positioning assembly for positioning the outer side of the valve body, the support assembly is provided with a pressing assembly corresponding to the valve body, and the pressing assembly drives the inner positioning assembly and the outer positioning assembly to approach each other after being pressed down by the valve body, and the outer positioning assembly is provided with a bracket conveying assembly for supporting the valve body bracket to be welded, and a transmission assembly is provided between the inner positioning assembly and the outer positioning assembly, and the transmission assembly drives the bracket conveying assembly to squeeze the valve body bracket toward one side of the valve body when the inner positioning assembly and the outer positioning assembly are close to each other.

2. A valve body welding positioning tool according to claim 1, characterized in that: The inner positioning assembly comprises an inner first mounting frame (1), first positioning rollers (2) are installed vertically on both sides of the first mounting frame (1), and a first support member (3) is provided on one side of the first mounting frame (1); the outer positioning assembly comprises a second mounting frame (4), second positioning rollers (5) are installed vertically on both sides of the second mounting frame (4), and a second support member (6) is provided on a side of the second mounting frame (4) away from the first mounting frame (1); The first support member (3) is fixedly connected to a first pneumatic telescopic rod (7) on a side away from the first positioning roller (2), and the second support member (6) is fixedly connected to a second pneumatic telescopic rod (8) on a side away from the second positioning roller (5). A horizontally arranged support seat (9) is provided below the support assembly, and the fixed ends of the first pneumatic telescopic rod (7) and the second pneumatic telescopic rod (8) are fixedly connected to the upper surface of the support seat (9) through a vertically arranged connecting rod (10).

3. The valve body welding positioning tool according to claim 2, characterized in that: The pressing assembly comprises an arc-shaped frame (11) fixedly connected to the supporting assembly and opening upward, an extrusion block (12) is slidably connected inside the arc-shaped frame (11), an air storage cushion (13) is arranged between the extrusion block (12) and the inner side of the arc-shaped frame (11), the fixed ends of the first pneumatic telescopic rod (7) and the second pneumatic telescopic rod (8) are both connected to an air inlet connector (14), and the air storage cushion (13) is connected to the air inlet connector (14) through a pipeline.

4. A valve body welding positioning tool according to claim 3, characterized in that: The support conveying assembly comprises supporting plates (15) symmetrically arranged on both sides of the second mounting frame (4), each supporting plate (15) being fixedly connected to a horizontally arranged first hydraulic telescopic rod (16), an output end of the first hydraulic telescopic rod (16) being fixedly connected to a vertically arranged conveying plate (17), a magnet (18) being provided on a side of the conveying plate (17) close to the first hydraulic telescopic rod (16), and a plurality of groups of circumferentially distributed conical blocks (19) being fixedly connected to the magnet (18).

5. The valve body welding positioning tool according to claim 4, characterized in that: The transmission assembly comprises mounting plates (20) respectively arranged on one side of the first mounting frame (1) and the second mounting frame (4); a second hydraulic telescopic rod (21) is fixedly connected between the two sets of mounting plates (20); and a return spring (22) is fixedly connected between the output end of the second hydraulic telescopic rod (21) and the mounting plate (20); A first joint (23) communicating with the first hydraulic telescopic rod (16) is provided on one side of the support plate (15), and a second joint (24) communicating with the fixed end of the second hydraulic telescopic rod (21) is provided on one side of the mounting plate (20), wherein the second joint (24) is communicated with the first joint (23) via a pipeline.

6. The valve body welding positioning tool according to claim 5, characterized in that: A symmetrically arranged cleaning assembly is provided on both sides of the external positioning assembly, and the cleaning assembly includes an elastic hinge seat (25) symmetrically arranged on the outside of the second mounting frame (4), and a horizontally arranged third pneumatic telescopic rod (26) is hinged on the elastic hinge seat (25), and the fixed end of the third pneumatic telescopic rod (26) is connected to the air storage cushion (13) through a pipeline and an exhaust valve; The output end of the third pneumatic telescopic rod (26) is provided with a vertically arranged cleaning block (27), and the output end of the third pneumatic telescopic rod (26) is fixedly connected with two groups of vertically arranged positioning rods (28), the upper ends of the positioning rods (28) pass through the cleaning block (27) and are slidably connected to the cleaning block (27), the upper ends of the positioning rods (28) are provided with a limit plate (29), and the upper and lower corners of the cleaning block (27) close to the valve body are both provided with wedge-shaped extrusion surfaces (30).

7. The valve body welding positioning tool according to claim 6, characterized in that: The support assembly comprises a first support ring (31) and a second support ring (32) which are arranged horizontally, the second support ring (32) being located on the inner side of the first support ring (31), the first support ring (31) and the second support ring (32) being provided with a notch, the two ends of the first support ring (31) and the second support ring (32) being fixedly connected to the two sides of the arc frame (11), the first support ring (31) and the second support ring (32) being provided with a plurality of groups of circumferentially distributed support plates (33), and the lower surfaces of the first support ring (31) and the second support ring (32) being provided with a plurality of groups of vertically arranged support legs (34).

8. The valve body welding positioning tool according to claim 7, characterized in that: An arc-shaped positioning frame (35) is provided on one side of the conveying plate (17), and a plurality of groups of balls (36) are provided on the inner side of the arc-shaped positioning frame (35). A vertically arranged support rod (37) is fixedly connected to the lower side of the arc-shaped positioning frame (35), and a horizontal plate (38) is fixedly connected to the lower end of the support rod (37). One end of the horizontal plate (38) is fixedly connected to the first support ring (31).

9. The valve body welding positioning tool according to claim 8, characterized in that: The support seat (9) is located below the first support ring (31), and the support seat (9) is fixedly connected to the lower surface of the transverse plate (38) via a pull rod (39).

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